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-rw-r--r--Documentation/DocBook/80211.tmpl1
-rw-r--r--Documentation/DocBook/drm.tmpl2840
-rw-r--r--Documentation/DocBook/filesystems.tmpl4
-rw-r--r--Documentation/DocBook/gadget.tmpl2
-rw-r--r--Documentation/DocBook/kernel-api.tmpl3
-rw-r--r--Documentation/DocBook/media/Makefile78
-rw-r--r--Documentation/DocBook/media/dvb/audio.xml113
-rw-r--r--Documentation/DocBook/media/dvb/ca.xml353
-rw-r--r--Documentation/DocBook/media/dvb/demux.xml230
-rw-r--r--Documentation/DocBook/media/dvb/dvbapi.xml4
-rw-r--r--Documentation/DocBook/media/dvb/dvbproperty.xml113
-rw-r--r--Documentation/DocBook/media/dvb/frontend.xml71
-rw-r--r--Documentation/DocBook/media/dvb/intro.xml2
-rw-r--r--Documentation/DocBook/media/dvb/kdapi.xml2
-rw-r--r--Documentation/DocBook/media/dvb/net.xml127
-rw-r--r--Documentation/DocBook/media/dvb/video.xml333
-rw-r--r--Documentation/DocBook/media/v4l/biblio.xml52
-rw-r--r--Documentation/DocBook/media/v4l/common.xml47
-rw-r--r--Documentation/DocBook/media/v4l/compat.xml66
-rw-r--r--Documentation/DocBook/media/v4l/controls.xml897
-rw-r--r--Documentation/DocBook/media/v4l/dev-osd.xml7
-rw-r--r--Documentation/DocBook/media/v4l/dev-rds.xml2
-rw-r--r--Documentation/DocBook/media/v4l/dev-subdev.xml56
-rw-r--r--Documentation/DocBook/media/v4l/driver.xml6
-rw-r--r--Documentation/DocBook/media/v4l/gen-errors.xml19
-rw-r--r--Documentation/DocBook/media/v4l/io.xml228
-rw-r--r--Documentation/DocBook/media/v4l/pixfmt-nv12m.xml17
-rw-r--r--Documentation/DocBook/media/v4l/pixfmt-srggb10dpcm8.xml3
-rw-r--r--Documentation/DocBook/media/v4l/pixfmt-yvu420m.xml154
-rw-r--r--Documentation/DocBook/media/v4l/pixfmt.xml39
-rw-r--r--Documentation/DocBook/media/v4l/selection-api.xml50
-rw-r--r--Documentation/DocBook/media/v4l/selections-common.xml164
-rw-r--r--Documentation/DocBook/media/v4l/subdev-formats.xml44
-rw-r--r--Documentation/DocBook/media/v4l/v4l2.xml27
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-create-bufs.xml28
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-cropcap.xml12
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-decoder-cmd.xml7
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-dv-timings-cap.xml14
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-encoder-cmd.xml7
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-enum-dv-presets.xml6
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-enum-dv-timings.xml6
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-enum-fmt.xml9
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-enum-framesizes.xml7
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-enum-freq-bands.xml179
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-enuminput.xml2
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-enumoutput.xml2
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-enumstd.xml6
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-expbuf.xml212
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-g-crop.xml6
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-g-dv-preset.xml9
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml13
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-g-enc-index.xml7
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-g-fmt.xml13
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-g-frequency.xml13
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-g-parm.xml4
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-g-selection.xml95
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-g-std.xml10
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-g-tuner.xml44
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-qbuf.xml31
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-query-dv-preset.xml9
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-query-dv-timings.xml6
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-querybuf.xml11
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-querycap.xml23
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-querystd.xml8
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-reqbufs.xml52
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml76
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-streamon.xml7
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-subdev-g-edid.xml152
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-subdev-g-selection.xml87
-rw-r--r--Documentation/DocBook/media_api.tmpl9
-rw-r--r--Documentation/DocBook/mtdnand.tmpl2
-rw-r--r--Documentation/DocBook/networking.tmpl4
-rw-r--r--Documentation/DocBook/uio-howto.tmpl56
-rw-r--r--Documentation/DocBook/writing-an-alsa-driver.tmpl85
74 files changed, 6009 insertions, 1474 deletions
diff --git a/Documentation/DocBook/80211.tmpl b/Documentation/DocBook/80211.tmpl
index f3e214f9e25..42e7f030cb1 100644
--- a/Documentation/DocBook/80211.tmpl
+++ b/Documentation/DocBook/80211.tmpl
@@ -404,7 +404,6 @@
!Finclude/net/mac80211.h ieee80211_get_tkip_p1k
!Finclude/net/mac80211.h ieee80211_get_tkip_p1k_iv
!Finclude/net/mac80211.h ieee80211_get_tkip_p2k
-!Finclude/net/mac80211.h ieee80211_key_removed
</chapter>
<chapter id="powersave">
diff --git a/Documentation/DocBook/drm.tmpl b/Documentation/DocBook/drm.tmpl
index 196b8b9dba1..4ee2304f82f 100644
--- a/Documentation/DocBook/drm.tmpl
+++ b/Documentation/DocBook/drm.tmpl
@@ -6,11 +6,36 @@
<bookinfo>
<title>Linux DRM Developer's Guide</title>
+ <authorgroup>
+ <author>
+ <firstname>Jesse</firstname>
+ <surname>Barnes</surname>
+ <contrib>Initial version</contrib>
+ <affiliation>
+ <orgname>Intel Corporation</orgname>
+ <address>
+ <email>jesse.barnes@intel.com</email>
+ </address>
+ </affiliation>
+ </author>
+ <author>
+ <firstname>Laurent</firstname>
+ <surname>Pinchart</surname>
+ <contrib>Driver internals</contrib>
+ <affiliation>
+ <orgname>Ideas on board SPRL</orgname>
+ <address>
+ <email>laurent.pinchart@ideasonboard.com</email>
+ </address>
+ </affiliation>
+ </author>
+ </authorgroup>
+
<copyright>
<year>2008-2009</year>
- <holder>
- Intel Corporation (Jesse Barnes &lt;jesse.barnes@intel.com&gt;)
- </holder>
+ <year>2012</year>
+ <holder>Intel Corporation</holder>
+ <holder>Laurent Pinchart</holder>
</copyright>
<legalnotice>
@@ -20,6 +45,17 @@
the kernel source COPYING file.
</para>
</legalnotice>
+
+ <revhistory>
+ <!-- Put document revisions here, newest first. -->
+ <revision>
+ <revnumber>1.0</revnumber>
+ <date>2012-07-13</date>
+ <authorinitials>LP</authorinitials>
+ <revremark>Added extensive documentation about driver internals.
+ </revremark>
+ </revision>
+ </revhistory>
</bookinfo>
<toc></toc>
@@ -72,342 +108,361 @@
submission &amp; fencing, suspend/resume support, and DMA
services.
</para>
- <para>
- The core of every DRM driver is struct drm_driver. Drivers
- typically statically initialize a drm_driver structure,
- then pass it to drm_init() at load time.
- </para>
<!-- Internals: driver init -->
<sect1>
- <title>Driver initialization</title>
- <para>
- Before calling the DRM initialization routines, the driver must
- first create and fill out a struct drm_driver structure.
- </para>
- <programlisting>
- static struct drm_driver driver = {
- /* Don't use MTRRs here; the Xserver or userspace app should
- * deal with them for Intel hardware.
- */
- .driver_features =
- DRIVER_USE_AGP | DRIVER_REQUIRE_AGP |
- DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_MODESET,
- .load = i915_driver_load,
- .unload = i915_driver_unload,
- .firstopen = i915_driver_firstopen,
- .lastclose = i915_driver_lastclose,
- .preclose = i915_driver_preclose,
- .save = i915_save,
- .restore = i915_restore,
- .device_is_agp = i915_driver_device_is_agp,
- .get_vblank_counter = i915_get_vblank_counter,
- .enable_vblank = i915_enable_vblank,
- .disable_vblank = i915_disable_vblank,
- .irq_preinstall = i915_driver_irq_preinstall,
- .irq_postinstall = i915_driver_irq_postinstall,
- .irq_uninstall = i915_driver_irq_uninstall,
- .irq_handler = i915_driver_irq_handler,
- .reclaim_buffers = drm_core_reclaim_buffers,
- .get_map_ofs = drm_core_get_map_ofs,
- .get_reg_ofs = drm_core_get_reg_ofs,
- .fb_probe = intelfb_probe,
- .fb_remove = intelfb_remove,
- .fb_resize = intelfb_resize,
- .master_create = i915_master_create,
- .master_destroy = i915_master_destroy,
-#if defined(CONFIG_DEBUG_FS)
- .debugfs_init = i915_debugfs_init,
- .debugfs_cleanup = i915_debugfs_cleanup,
-#endif
- .gem_init_object = i915_gem_init_object,
- .gem_free_object = i915_gem_free_object,
- .gem_vm_ops = &amp;i915_gem_vm_ops,
- .ioctls = i915_ioctls,
- .fops = {
- .owner = THIS_MODULE,
- .open = drm_open,
- .release = drm_release,
- .ioctl = drm_ioctl,
- .mmap = drm_mmap,
- .poll = drm_poll,
- .fasync = drm_fasync,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = i915_compat_ioctl,
-#endif
- .llseek = noop_llseek,
- },
- .pci_driver = {
- .name = DRIVER_NAME,
- .id_table = pciidlist,
- .probe = probe,
- .remove = __devexit_p(drm_cleanup_pci),
- },
- .name = DRIVER_NAME,
- .desc = DRIVER_DESC,
- .date = DRIVER_DATE,
- .major = DRIVER_MAJOR,
- .minor = DRIVER_MINOR,
- .patchlevel = DRIVER_PATCHLEVEL,
- };
- </programlisting>
- <para>
- In the example above, taken from the i915 DRM driver, the driver
- sets several flags indicating what core features it supports;
- we go over the individual callbacks in later sections. Since
- flags indicate which features your driver supports to the DRM
- core, you need to set most of them prior to calling drm_init(). Some,
- like DRIVER_MODESET can be set later based on user supplied parameters,
- but that's the exception rather than the rule.
- </para>
- <variablelist>
- <title>Driver flags</title>
- <varlistentry>
- <term>DRIVER_USE_AGP</term>
- <listitem><para>
- Driver uses AGP interface
- </para></listitem>
- </varlistentry>
- <varlistentry>
- <term>DRIVER_REQUIRE_AGP</term>
- <listitem><para>
- Driver needs AGP interface to function.
- </para></listitem>
- </varlistentry>
- <varlistentry>
- <term>DRIVER_USE_MTRR</term>
- <listitem>
- <para>
- Driver uses MTRR interface for mapping memory. Deprecated.
- </para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>DRIVER_PCI_DMA</term>
- <listitem><para>
- Driver is capable of PCI DMA. Deprecated.
- </para></listitem>
- </varlistentry>
- <varlistentry>
- <term>DRIVER_SG</term>
- <listitem><para>
- Driver can perform scatter/gather DMA. Deprecated.
- </para></listitem>
- </varlistentry>
- <varlistentry>
- <term>DRIVER_HAVE_DMA</term>
- <listitem><para>Driver supports DMA. Deprecated.</para></listitem>
- </varlistentry>
- <varlistentry>
- <term>DRIVER_HAVE_IRQ</term><term>DRIVER_IRQ_SHARED</term>
- <listitem>
- <para>
- DRIVER_HAVE_IRQ indicates whether the driver has an IRQ
- handler. DRIVER_IRQ_SHARED indicates whether the device &amp;
- handler support shared IRQs (note that this is required of
- PCI drivers).
- </para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>DRIVER_DMA_QUEUE</term>
- <listitem>
- <para>
- Should be set if the driver queues DMA requests and completes them
- asynchronously. Deprecated.
- </para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>DRIVER_FB_DMA</term>
- <listitem>
- <para>
- Driver supports DMA to/from the framebuffer. Deprecated.
- </para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>DRIVER_MODESET</term>
- <listitem>
- <para>
- Driver supports mode setting interfaces.
- </para>
- </listitem>
- </varlistentry>
- </variablelist>
- <para>
- In this specific case, the driver requires AGP and supports
- IRQs. DMA, as discussed later, is handled by device-specific ioctls
- in this case. It also supports the kernel mode setting APIs, though
- unlike in the actual i915 driver source, this example unconditionally
- exports KMS capability.
+ <title>Driver Initialization</title>
+ <para>
+ At the core of every DRM driver is a <structname>drm_driver</structname>
+ structure. Drivers typically statically initialize a drm_driver structure,
+ and then pass it to one of the <function>drm_*_init()</function> functions
+ to register it with the DRM subsystem.
</para>
- </sect1>
-
- <!-- Internals: driver load -->
-
- <sect1>
- <title>Driver load</title>
- <para>
- In the previous section, we saw what a typical drm_driver
- structure might look like. One of the more important fields in
- the structure is the hook for the load function.
- </para>
- <programlisting>
- static struct drm_driver driver = {
- ...
- .load = i915_driver_load,
- ...
- };
- </programlisting>
- <para>
- The load function has many responsibilities: allocating a driver
- private structure, specifying supported performance counters,
- configuring the device (e.g. mapping registers &amp; command
- buffers), initializing the memory manager, and setting up the
- initial output configuration.
- </para>
- <para>
- If compatibility is a concern (e.g. with drivers converted over
- to the new interfaces from the old ones), care must be taken to
- prevent device initialization and control that is incompatible with
- currently active userspace drivers. For instance, if user
- level mode setting drivers are in use, it would be problematic
- to perform output discovery &amp; configuration at load time.
- Likewise, if user-level drivers unaware of memory management are
- in use, memory management and command buffer setup may need to
- be omitted. These requirements are driver-specific, and care
- needs to be taken to keep both old and new applications and
- libraries working. The i915 driver supports the "modeset"
- module parameter to control whether advanced features are
- enabled at load time or in legacy fashion.
+ <para>
+ The <structname>drm_driver</structname> structure contains static
+ information that describes the driver and features it supports, and
+ pointers to methods that the DRM core will call to implement the DRM API.
+ We will first go through the <structname>drm_driver</structname> static
+ information fields, and will then describe individual operations in
+ details as they get used in later sections.
</para>
-
<sect2>
- <title>Driver private &amp; performance counters</title>
- <para>
- The driver private hangs off the main drm_device structure and
- can be used for tracking various device-specific bits of
- information, like register offsets, command buffer status,
- register state for suspend/resume, etc. At load time, a
- driver may simply allocate one and set drm_device.dev_priv
- appropriately; it should be freed and drm_device.dev_priv set
- to NULL when the driver is unloaded.
- </para>
+ <title>Driver Information</title>
+ <sect3>
+ <title>Driver Features</title>
+ <para>
+ Drivers inform the DRM core about their requirements and supported
+ features by setting appropriate flags in the
+ <structfield>driver_features</structfield> field. Since those flags
+ influence the DRM core behaviour since registration time, most of them
+ must be set to registering the <structname>drm_driver</structname>
+ instance.
+ </para>
+ <synopsis>u32 driver_features;</synopsis>
+ <variablelist>
+ <title>Driver Feature Flags</title>
+ <varlistentry>
+ <term>DRIVER_USE_AGP</term>
+ <listitem><para>
+ Driver uses AGP interface, the DRM core will manage AGP resources.
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRIVER_REQUIRE_AGP</term>
+ <listitem><para>
+ Driver needs AGP interface to function. AGP initialization failure
+ will become a fatal error.
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRIVER_USE_MTRR</term>
+ <listitem><para>
+ Driver uses MTRR interface for mapping memory, the DRM core will
+ manage MTRR resources. Deprecated.
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRIVER_PCI_DMA</term>
+ <listitem><para>
+ Driver is capable of PCI DMA, mapping of PCI DMA buffers to
+ userspace will be enabled. Deprecated.
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRIVER_SG</term>
+ <listitem><para>
+ Driver can perform scatter/gather DMA, allocation and mapping of
+ scatter/gather buffers will be enabled. Deprecated.
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRIVER_HAVE_DMA</term>
+ <listitem><para>
+ Driver supports DMA, the userspace DMA API will be supported.
+ Deprecated.
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRIVER_HAVE_IRQ</term><term>DRIVER_IRQ_SHARED</term>
+ <listitem><para>
+ DRIVER_HAVE_IRQ indicates whether the driver has an IRQ handler. The
+ DRM core will automatically register an interrupt handler when the
+ flag is set. DRIVER_IRQ_SHARED indicates whether the device &amp;
+ handler support shared IRQs (note that this is required of PCI
+ drivers).
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRIVER_IRQ_VBL</term>
+ <listitem><para>Unused. Deprecated.</para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRIVER_DMA_QUEUE</term>
+ <listitem><para>
+ Should be set if the driver queues DMA requests and completes them
+ asynchronously. Deprecated.
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRIVER_FB_DMA</term>
+ <listitem><para>
+ Driver supports DMA to/from the framebuffer, mapping of frambuffer
+ DMA buffers to userspace will be supported. Deprecated.
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRIVER_IRQ_VBL2</term>
+ <listitem><para>Unused. Deprecated.</para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRIVER_GEM</term>
+ <listitem><para>
+ Driver use the GEM memory manager.
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRIVER_MODESET</term>
+ <listitem><para>
+ Driver supports mode setting interfaces (KMS).
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRIVER_PRIME</term>
+ <listitem><para>
+ Driver implements DRM PRIME buffer sharing.
+ </para></listitem>
+ </varlistentry>
+ </variablelist>
+ </sect3>
+ <sect3>
+ <title>Major, Minor and Patchlevel</title>
+ <synopsis>int major;
+int minor;
+int patchlevel;</synopsis>
+ <para>
+ The DRM core identifies driver versions by a major, minor and patch
+ level triplet. The information is printed to the kernel log at
+ initialization time and passed to userspace through the
+ DRM_IOCTL_VERSION ioctl.
+ </para>
+ <para>
+ The major and minor numbers are also used to verify the requested driver
+ API version passed to DRM_IOCTL_SET_VERSION. When the driver API changes
+ between minor versions, applications can call DRM_IOCTL_SET_VERSION to
+ select a specific version of the API. If the requested major isn't equal
+ to the driver major, or the requested minor is larger than the driver
+ minor, the DRM_IOCTL_SET_VERSION call will return an error. Otherwise
+ the driver's set_version() method will be called with the requested
+ version.
+ </para>
+ </sect3>
+ <sect3>
+ <title>Name, Description and Date</title>
+ <synopsis>char *name;
+char *desc;
+char *date;</synopsis>
+ <para>
+ The driver name is printed to the kernel log at initialization time,
+ used for IRQ registration and passed to userspace through
+ DRM_IOCTL_VERSION.
+ </para>
+ <para>
+ The driver description is a purely informative string passed to
+ userspace through the DRM_IOCTL_VERSION ioctl and otherwise unused by
+ the kernel.
+ </para>
+ <para>
+ The driver date, formatted as YYYYMMDD, is meant to identify the date of
+ the latest modification to the driver. However, as most drivers fail to
+ update it, its value is mostly useless. The DRM core prints it to the
+ kernel log at initialization time and passes it to userspace through the
+ DRM_IOCTL_VERSION ioctl.
+ </para>
+ </sect3>
+ </sect2>
+ <sect2>
+ <title>Driver Load</title>
<para>
- The DRM supports several counters which may be used for rough
- performance characterization. Note that the DRM stat counter
- system is not often used by applications, and supporting
- additional counters is completely optional.
+ The <methodname>load</methodname> method is the driver and device
+ initialization entry point. The method is responsible for allocating and
+ initializing driver private data, specifying supported performance
+ counters, performing resource allocation and mapping (e.g. acquiring
+ clocks, mapping registers or allocating command buffers), initializing
+ the memory manager (<xref linkend="drm-memory-management"/>), installing
+ the IRQ handler (<xref linkend="drm-irq-registration"/>), setting up
+ vertical blanking handling (<xref linkend="drm-vertical-blank"/>), mode
+ setting (<xref linkend="drm-mode-setting"/>) and initial output
+ configuration (<xref linkend="drm-kms-init"/>).
</para>
+ <note><para>
+ If compatibility is a concern (e.g. with drivers converted over from
+ User Mode Setting to Kernel Mode Setting), care must be taken to prevent
+ device initialization and control that is incompatible with currently
+ active userspace drivers. For instance, if user level mode setting
+ drivers are in use, it would be problematic to perform output discovery
+ &amp; configuration at load time. Likewise, if user-level drivers
+ unaware of memory management are in use, memory management and command
+ buffer setup may need to be omitted. These requirements are
+ driver-specific, and care needs to be taken to keep both old and new
+ applications and libraries working.
+ </para></note>
+ <synopsis>int (*load) (struct drm_device *, unsigned long flags);</synopsis>
<para>
- These interfaces are deprecated and should not be used. If performance
- monitoring is desired, the developer should investigate and
- potentially enhance the kernel perf and tracing infrastructure to export
- GPU related performance information for consumption by performance
- monitoring tools and applications.
+ The method takes two arguments, a pointer to the newly created
+ <structname>drm_device</structname> and flags. The flags are used to
+ pass the <structfield>driver_data</structfield> field of the device id
+ corresponding to the device passed to <function>drm_*_init()</function>.
+ Only PCI devices currently use this, USB and platform DRM drivers have
+ their <methodname>load</methodname> method called with flags to 0.
</para>
+ <sect3>
+ <title>Driver Private &amp; Performance Counters</title>
+ <para>
+ The driver private hangs off the main
+ <structname>drm_device</structname> structure and can be used for
+ tracking various device-specific bits of information, like register
+ offsets, command buffer status, register state for suspend/resume, etc.
+ At load time, a driver may simply allocate one and set
+ <structname>drm_device</structname>.<structfield>dev_priv</structfield>
+ appropriately; it should be freed and
+ <structname>drm_device</structname>.<structfield>dev_priv</structfield>
+ set to NULL when the driver is unloaded.
+ </para>
+ <para>
+ DRM supports several counters which were used for rough performance
+ characterization. This stat counter system is deprecated and should not
+ be used. If performance monitoring is desired, the developer should
+ investigate and potentially enhance the kernel perf and tracing
+ infrastructure to export GPU related performance information for
+ consumption by performance monitoring tools and applications.
+ </para>
+ </sect3>
+ <sect3 id="drm-irq-registration">
+ <title>IRQ Registration</title>
+ <para>
+ The DRM core tries to facilitate IRQ handler registration and
+ unregistration by providing <function>drm_irq_install</function> and
+ <function>drm_irq_uninstall</function> functions. Those functions only
+ support a single interrupt per device.
+ </para>
+ <!--!Fdrivers/char/drm/drm_irq.c drm_irq_install-->
+ <para>
+ Both functions get the device IRQ by calling
+ <function>drm_dev_to_irq</function>. This inline function will call a
+ bus-specific operation to retrieve the IRQ number. For platform devices,
+ <function>platform_get_irq</function>(..., 0) is used to retrieve the
+ IRQ number.
+ </para>
+ <para>
+ <function>drm_irq_install</function> starts by calling the
+ <methodname>irq_preinstall</methodname> driver operation. The operation
+ is optional and must make sure that the interrupt will not get fired by
+ clearing all pending interrupt flags or disabling the interrupt.
+ </para>
+ <para>
+ The IRQ will then be requested by a call to
+ <function>request_irq</function>. If the DRIVER_IRQ_SHARED driver
+ feature flag is set, a shared (IRQF_SHARED) IRQ handler will be
+ requested.
+ </para>
+ <para>
+ The IRQ handler function must be provided as the mandatory irq_handler
+ driver operation. It will get passed directly to
+ <function>request_irq</function> and thus has the same prototype as all
+ IRQ handlers. It will get called with a pointer to the DRM device as the
+ second argument.
+ </para>
+ <para>
+ Finally the function calls the optional
+ <methodname>irq_postinstall</methodname> driver operation. The operation
+ usually enables interrupts (excluding the vblank interrupt, which is
+ enabled separately), but drivers may choose to enable/disable interrupts
+ at a different time.
+ </para>
+ <para>
+ <function>drm_irq_uninstall</function> is similarly used to uninstall an
+ IRQ handler. It starts by waking up all processes waiting on a vblank
+ interrupt to make sure they don't hang, and then calls the optional
+ <methodname>irq_uninstall</methodname> driver operation. The operation
+ must disable all hardware interrupts. Finally the function frees the IRQ
+ by calling <function>free_irq</function>.
+ </para>
+ </sect3>
+ <sect3>
+ <title>Memory Manager Initialization</title>
+ <para>
+ Every DRM driver requires a memory manager which must be initialized at
+ load time. DRM currently contains two memory managers, the Translation
+ Table Manager (TTM) and the Graphics Execution Manager (GEM).
+ This document describes the use of the GEM memory manager only. See
+ <xref linkend="drm-memory-management"/> for details.
+ </para>
+ </sect3>
+ <sect3>
+ <title>Miscellaneous Device Configuration</title>
+ <para>
+ Another task that may be necessary for PCI devices during configuration
+ is mapping the video BIOS. On many devices, the VBIOS describes device
+ configuration, LCD panel timings (if any), and contains flags indicating
+ device state. Mapping the BIOS can be done using the pci_map_rom() call,
+ a convenience function that takes care of mapping the actual ROM,
+ whether it has been shadowed into memory (typically at address 0xc0000)
+ or exists on the PCI device in the ROM BAR. Note that after the ROM has
+ been mapped and any necessary information has been extracted, it should
+ be unmapped; on many devices, the ROM address decoder is shared with
+ other BARs, so leaving it mapped could cause undesired behaviour like
+ hangs or memory corruption.
+ <!--!Fdrivers/pci/rom.c pci_map_rom-->
+ </para>
+ </sect3>
</sect2>
+ </sect1>
- <sect2>
- <title>Configuring the device</title>
- <para>
- Obviously, device configuration is device-specific.
- However, there are several common operations: finding a
- device's PCI resources, mapping them, and potentially setting
- up an IRQ handler.
- </para>
- <para>
- Finding &amp; mapping resources is fairly straightforward. The
- DRM wrapper functions, drm_get_resource_start() and
- drm_get_resource_len(), may be used to find BARs on the given
- drm_device struct. Once those values have been retrieved, the
- driver load function can call drm_addmap() to create a new
- mapping for the BAR in question. Note that you probably want a
- drm_local_map_t in your driver private structure to track any
- mappings you create.
-<!-- !Fdrivers/gpu/drm/drm_bufs.c drm_get_resource_* -->
-<!-- !Finclude/drm/drmP.h drm_local_map_t -->
- </para>
- <para>
- if compatibility with other operating systems isn't a concern
- (DRM drivers can run under various BSD variants and OpenSolaris),
- native Linux calls may be used for the above, e.g. pci_resource_*
- and iomap*/iounmap. See the Linux device driver book for more
- info.
- </para>
- <para>
- Once you have a register map, you may use the DRM_READn() and
- DRM_WRITEn() macros to access the registers on your device, or
- use driver-specific versions to offset into your MMIO space
- relative to a driver-specific base pointer (see I915_READ for
- an example).
- </para>
- <para>
- If your device supports interrupt generation, you may want to
- set up an interrupt handler when the driver is loaded. This
- is done using the drm_irq_install() function. If your device
- supports vertical blank interrupts, it should call
- drm_vblank_init() to initialize the core vblank handling code before
- enabling interrupts on your device. This ensures the vblank related
- structures are allocated and allows the core to handle vblank events.
- </para>
-<!--!Fdrivers/char/drm/drm_irq.c drm_irq_install-->
- <para>
- Once your interrupt handler is registered (it uses your
- drm_driver.irq_handler as the actual interrupt handling
- function), you can safely enable interrupts on your device,
- assuming any other state your interrupt handler uses is also
- initialized.
- </para>
- <para>
- Another task that may be necessary during configuration is
- mapping the video BIOS. On many devices, the VBIOS describes
- device configuration, LCD panel timings (if any), and contains
- flags indicating device state. Mapping the BIOS can be done
- using the pci_map_rom() call, a convenience function that
- takes care of mapping the actual ROM, whether it has been
- shadowed into memory (typically at address 0xc0000) or exists
- on the PCI device in the ROM BAR. Note that after the ROM
- has been mapped and any necessary information has been extracted,
- it should be unmapped; on many devices, the ROM address decoder is
- shared with other BARs, so leaving it mapped could cause
- undesired behavior like hangs or memory corruption.
-<!--!Fdrivers/pci/rom.c pci_map_rom-->
- </para>
- </sect2>
+ <!-- Internals: memory management -->
+ <sect1 id="drm-memory-management">
+ <title>Memory management</title>
+ <para>
+ Modern Linux systems require large amount of graphics memory to store
+ frame buffers, textures, vertices and other graphics-related data. Given
+ the very dynamic nature of many of that data, managing graphics memory
+ efficiently is thus crucial for the graphics stack and plays a central
+ role in the DRM infrastructure.
+ </para>
+ <para>
+ The DRM core includes two memory managers, namely Translation Table Maps
+ (TTM) and Graphics Execution Manager (GEM). TTM was the first DRM memory
+ manager to be developed and tried to be a one-size-fits-them all
+ solution. It provides a single userspace API to accomodate the need of
+ all hardware, supporting both Unified Memory Architecture (UMA) devices
+ and devices with dedicated video RAM (i.e. most discrete video cards).
+ This resulted in a large, complex piece of code that turned out to be
+ hard to use for driver development.
+ </para>
+ <para>
+ GEM started as an Intel-sponsored project in reaction to TTM's
+ complexity. Its design philosophy is completely different: instead of
+ providing a solution to every graphics memory-related problems, GEM
+ identified common code between drivers and created a support library to
+ share it. GEM has simpler initialization and execution requirements than
+ TTM, but has no video RAM management capabitilies and is thus limited to
+ UMA devices.
+ </para>
<sect2>
- <title>Memory manager initialization</title>
- <para>
- In order to allocate command buffers, cursor memory, scanout
- buffers, etc., as well as support the latest features provided
- by packages like Mesa and the X.Org X server, your driver
- should support a memory manager.
- </para>
+ <title>The Translation Table Manager (TTM)</title>
<para>
- If your driver supports memory management (it should!), you
- need to set that up at load time as well. How you initialize
- it depends on which memory manager you're using: TTM or GEM.
+ TTM design background and information belongs here.
</para>
<sect3>
<title>TTM initialization</title>
- <para>
- TTM (for Translation Table Manager) manages video memory and
- aperture space for graphics devices. TTM supports both UMA devices
- and devices with dedicated video RAM (VRAM), i.e. most discrete
- graphics devices. If your device has dedicated RAM, supporting
- TTM is desirable. TTM also integrates tightly with your
- driver-specific buffer execution function. See the radeon
- driver for examples.
- </para>
- <para>
- The core TTM structure is the ttm_bo_driver struct. It contains
- several fields with function pointers for initializing the TTM,
- allocating and freeing memory, waiting for command completion
- and fence synchronization, and memory migration. See the
- radeon_ttm.c file for an example of usage.
+ <warning><para>This section is outdated.</para></warning>
+ <para>
+ Drivers wishing to support TTM must fill out a drm_bo_driver
+ structure. The structure contains several fields with function
+ pointers for initializing the TTM, allocating and freeing memory,
+ waiting for command completion and fence synchronization, and memory
+ migration. See the radeon_ttm.c file for an example of usage.
</para>
<para>
The ttm_global_reference structure is made up of several fields:
@@ -445,82 +500,1071 @@
count for the TTM, which will call your initialization function.
</para>
</sect3>
+ </sect2>
+ <sect2 id="drm-gem">
+ <title>The Graphics Execution Manager (GEM)</title>
+ <para>
+ The GEM design approach has resulted in a memory manager that doesn't
+ provide full coverage of all (or even all common) use cases in its
+ userspace or kernel API. GEM exposes a set of standard memory-related
+ operations to userspace and a set of helper functions to drivers, and let
+ drivers implement hardware-specific operations with their own private API.
+ </para>
+ <para>
+ The GEM userspace API is described in the
+ <ulink url="http://lwn.net/Articles/283798/"><citetitle>GEM - the Graphics
+ Execution Manager</citetitle></ulink> article on LWN. While slightly
+ outdated, the document provides a good overview of the GEM API principles.
+ Buffer allocation and read and write operations, described as part of the
+ common GEM API, are currently implemented using driver-specific ioctls.
+ </para>
+ <para>
+ GEM is data-agnostic. It manages abstract buffer objects without knowing
+ what individual buffers contain. APIs that require knowledge of buffer
+ contents or purpose, such as buffer allocation or synchronization
+ primitives, are thus outside of the scope of GEM and must be implemented
+ using driver-specific ioctls.
+ </para>
+ <para>
+ On a fundamental level, GEM involves several operations:
+ <itemizedlist>
+ <listitem>Memory allocation and freeing</listitem>
+ <listitem>Command execution</listitem>
+ <listitem>Aperture management at command execution time</listitem>
+ </itemizedlist>
+ Buffer object allocation is relatively straightforward and largely
+ provided by Linux's shmem layer, which provides memory to back each
+ object.
+ </para>
+ <para>
+ Device-specific operations, such as command execution, pinning, buffer
+ read &amp; write, mapping, and domain ownership transfers are left to
+ driver-specific ioctls.
+ </para>
+ <sect3>
+ <title>GEM Initialization</title>
+ <para>
+ Drivers that use GEM must set the DRIVER_GEM bit in the struct
+ <structname>drm_driver</structname>
+ <structfield>driver_features</structfield> field. The DRM core will
+ then automatically initialize the GEM core before calling the
+ <methodname>load</methodname> operation. Behind the scene, this will
+ create a DRM Memory Manager object which provides an address space
+ pool for object allocation.
+ </para>
+ <para>
+ In a KMS configuration, drivers need to allocate and initialize a
+ command ring buffer following core GEM initialization if required by
+ the hardware. UMA devices usually have what is called a "stolen"
+ memory region, which provides space for the initial framebuffer and
+ large, contiguous memory regions required by the device. This space is
+ typically not managed by GEM, and must be initialized separately into
+ its own DRM MM object.
+ </para>
+ </sect3>
<sect3>
- <title>GEM initialization</title>
- <para>
- GEM is an alternative to TTM, designed specifically for UMA
- devices. It has simpler initialization and execution requirements
- than TTM, but has no VRAM management capability. Core GEM
- is initialized by calling drm_mm_init() to create
- a GTT DRM MM object, which provides an address space pool for
- object allocation. In a KMS configuration, the driver
- needs to allocate and initialize a command ring buffer following
- core GEM initialization. A UMA device usually has what is called a
- "stolen" memory region, which provides space for the initial
- framebuffer and large, contiguous memory regions required by the
- device. This space is not typically managed by GEM, and it must
- be initialized separately into its own DRM MM object.
- </para>
- <para>
- Initialization is driver-specific. In the case of Intel
- integrated graphics chips like 965GM, GEM initialization can
- be done by calling the internal GEM init function,
- i915_gem_do_init(). Since the 965GM is a UMA device
- (i.e. it doesn't have dedicated VRAM), GEM manages
- making regular RAM available for GPU operations. Memory set
- aside by the BIOS (called "stolen" memory by the i915
- driver) is managed by the DRM memrange allocator; the
- rest of the aperture is managed by GEM.
- <programlisting>
- /* Basic memrange allocator for stolen space (aka vram) */
- drm_memrange_init(&amp;dev_priv->vram, 0, prealloc_size);
- /* Let GEM Manage from end of prealloc space to end of aperture */
- i915_gem_do_init(dev, prealloc_size, agp_size);
- </programlisting>
-<!--!Edrivers/char/drm/drm_memrange.c-->
- </para>
- <para>
- Once the memory manager has been set up, we may allocate the
- command buffer. In the i915 case, this is also done with a
- GEM function, i915_gem_init_ringbuffer().
- </para>
+ <title>GEM Objects Creation</title>
+ <para>
+ GEM splits creation of GEM objects and allocation of the memory that
+ backs them in two distinct operations.
+ </para>
+ <para>
+ GEM objects are represented by an instance of struct
+ <structname>drm_gem_object</structname>. Drivers usually need to extend
+ GEM objects with private information and thus create a driver-specific
+ GEM object structure type that embeds an instance of struct
+ <structname>drm_gem_object</structname>.
+ </para>
+ <para>
+ To create a GEM object, a driver allocates memory for an instance of its
+ specific GEM object type and initializes the embedded struct
+ <structname>drm_gem_object</structname> with a call to
+ <function>drm_gem_object_init</function>. The function takes a pointer to
+ the DRM device, a pointer to the GEM object and the buffer object size
+ in bytes.
+ </para>
+ <para>
+ GEM uses shmem to allocate anonymous pageable memory.
+ <function>drm_gem_object_init</function> will create an shmfs file of
+ the requested size and store it into the struct
+ <structname>drm_gem_object</structname> <structfield>filp</structfield>
+ field. The memory is used as either main storage for the object when the
+ graphics hardware uses system memory directly or as a backing store
+ otherwise.
+ </para>
+ <para>
+ Drivers are responsible for the actual physical pages allocation by
+ calling <function>shmem_read_mapping_page_gfp</function> for each page.
+ Note that they can decide to allocate pages when initializing the GEM
+ object, or to delay allocation until the memory is needed (for instance
+ when a page fault occurs as a result of a userspace memory access or
+ when the driver needs to start a DMA transfer involving the memory).
+ </para>
+ <para>
+ Anonymous pageable memory allocation is not always desired, for instance
+ when the hardware requires physically contiguous system memory as is
+ often the case in embedded devices. Drivers can create GEM objects with
+ no shmfs backing (called private GEM objects) by initializing them with
+ a call to <function>drm_gem_private_object_init</function> instead of
+ <function>drm_gem_object_init</function>. Storage for private GEM
+ objects must be managed by drivers.
+ </para>
+ <para>
+ Drivers that do not need to extend GEM objects with private information
+ can call the <function>drm_gem_object_alloc</function> function to
+ allocate and initialize a struct <structname>drm_gem_object</structname>
+ instance. The GEM core will call the optional driver
+ <methodname>gem_init_object</methodname> operation after initializing
+ the GEM object with <function>drm_gem_object_init</function>.
+ <synopsis>int (*gem_init_object) (struct drm_gem_object *obj);</synopsis>
+ </para>
+ <para>
+ No alloc-and-init function exists for private GEM objects.
+ </para>
+ </sect3>
+ <sect3>
+ <title>GEM Objects Lifetime</title>
+ <para>
+ All GEM objects are reference-counted by the GEM core. References can be
+ acquired and release by <function>calling drm_gem_object_reference</function>
+ and <function>drm_gem_object_unreference</function> respectively. The
+ caller must hold the <structname>drm_device</structname>
+ <structfield>struct_mutex</structfield> lock. As a convenience, GEM
+ provides the <function>drm_gem_object_reference_unlocked</function> and
+ <function>drm_gem_object_unreference_unlocked</function> functions that
+ can be called without holding the lock.
+ </para>
+ <para>
+ When the last reference to a GEM object is released the GEM core calls
+ the <structname>drm_driver</structname>
+ <methodname>gem_free_object</methodname> operation. That operation is
+ mandatory for GEM-enabled drivers and must free the GEM object and all
+ associated resources.
+ </para>
+ <para>
+ <synopsis>void (*gem_free_object) (struct drm_gem_object *obj);</synopsis>
+ Drivers are responsible for freeing all GEM object resources, including
+ the resources created by the GEM core. If an mmap offset has been
+ created for the object (in which case
+ <structname>drm_gem_object</structname>::<structfield>map_list</structfield>::<structfield>map</structfield>
+ is not NULL) it must be freed by a call to
+ <function>drm_gem_free_mmap_offset</function>. The shmfs backing store
+ must be released by calling <function>drm_gem_object_release</function>
+ (that function can safely be called if no shmfs backing store has been
+ created).
+ </para>
+ </sect3>
+ <sect3>
+ <title>GEM Objects Naming</title>
+ <para>
+ Communication between userspace and the kernel refers to GEM objects
+ using local handles, global names or, more recently, file descriptors.
+ All of those are 32-bit integer values; the usual Linux kernel limits
+ apply to the file descriptors.
+ </para>
+ <para>
+ GEM handles are local to a DRM file. Applications get a handle to a GEM
+ object through a driver-specific ioctl, and can use that handle to refer
+ to the GEM object in other standard or driver-specific ioctls. Closing a
+ DRM file handle frees all its GEM handles and dereferences the
+ associated GEM objects.
+ </para>
+ <para>
+ To create a handle for a GEM object drivers call
+ <function>drm_gem_handle_create</function>. The function takes a pointer
+ to the DRM file and the GEM object and returns a locally unique handle.
+ When the handle is no longer needed drivers delete it with a call to
+ <function>drm_gem_handle_delete</function>. Finally the GEM object
+ associated with a handle can be retrieved by a call to
+ <function>drm_gem_object_lookup</function>.
+ </para>
+ <para>
+ Handles don't take ownership of GEM objects, they only take a reference
+ to the object that will be dropped when the handle is destroyed. To
+ avoid leaking GEM objects, drivers must make sure they drop the
+ reference(s) they own (such as the initial reference taken at object
+ creation time) as appropriate, without any special consideration for the
+ handle. For example, in the particular case of combined GEM object and
+ handle creation in the implementation of the
+ <methodname>dumb_create</methodname> operation, drivers must drop the
+ initial reference to the GEM object before returning the handle.
+ </para>
+ <para>
+ GEM names are similar in purpose to handles but are not local to DRM
+ files. They can be passed between processes to reference a GEM object
+ globally. Names can't be used directly to refer to objects in the DRM
+ API, applications must convert handles to names and names to handles
+ using the DRM_IOCTL_GEM_FLINK and DRM_IOCTL_GEM_OPEN ioctls
+ respectively. The conversion is handled by the DRM core without any
+ driver-specific support.
+ </para>
+ <para>
+ Similar to global names, GEM file descriptors are also used to share GEM
+ objects across processes. They offer additional security: as file
+ descriptors must be explictly sent over UNIX domain sockets to be shared
+ between applications, they can't be guessed like the globally unique GEM
+ names.
+ </para>
+ <para>
+ Drivers that support GEM file descriptors, also known as the DRM PRIME
+ API, must set the DRIVER_PRIME bit in the struct
+ <structname>drm_driver</structname>
+ <structfield>driver_features</structfield> field, and implement the
+ <methodname>prime_handle_to_fd</methodname> and
+ <methodname>prime_fd_to_handle</methodname> operations.
+ </para>
+ <para>
+ <synopsis>int (*prime_handle_to_fd)(struct drm_device *dev,
+ struct drm_file *file_priv, uint32_t handle,
+ uint32_t flags, int *prime_fd);
+ int (*prime_fd_to_handle)(struct drm_device *dev,
+ struct drm_file *file_priv, int prime_fd,
+ uint32_t *handle);</synopsis>
+ Those two operations convert a handle to a PRIME file descriptor and
+ vice versa. Drivers must use the kernel dma-buf buffer sharing framework
+ to manage the PRIME file descriptors.
+ </para>
+ <para>
+ While non-GEM drivers must implement the operations themselves, GEM
+ drivers must use the <function>drm_gem_prime_handle_to_fd</function>
+ and <function>drm_gem_prime_fd_to_handle</function> helper functions.
+ Those helpers rely on the driver
+ <methodname>gem_prime_export</methodname> and
+ <methodname>gem_prime_import</methodname> operations to create a dma-buf
+ instance from a GEM object (dma-buf exporter role) and to create a GEM
+ object from a dma-buf instance (dma-buf importer role).
+ </para>
+ <para>
+ <synopsis>struct dma_buf * (*gem_prime_export)(struct drm_device *dev,
+ struct drm_gem_object *obj,
+ int flags);
+ struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev,
+ struct dma_buf *dma_buf);</synopsis>
+ These two operations are mandatory for GEM drivers that support DRM
+ PRIME.
+ </para>
+ </sect3>
+ <sect3 id="drm-gem-objects-mapping">
+ <title>GEM Objects Mapping</title>
+ <para>
+ Because mapping operations are fairly heavyweight GEM favours
+ read/write-like access to buffers, implemented through driver-specific
+ ioctls, over mapping buffers to userspace. However, when random access
+ to the buffer is needed (to perform software rendering for instance),
+ direct access to the object can be more efficient.
+ </para>
+ <para>
+ The mmap system call can't be used directly to map GEM objects, as they
+ don't have their own file handle. Two alternative methods currently
+ co-exist to map GEM objects to userspace. The first method uses a
+ driver-specific ioctl to perform the mapping operation, calling
+ <function>do_mmap</function> under the hood. This is often considered
+ dubious, seems to be discouraged for new GEM-enabled drivers, and will
+ thus not be described here.
+ </para>
+ <para>
+ The second method uses the mmap system call on the DRM file handle.
+ <synopsis>void *mmap(void *addr, size_t length, int prot, int flags, int fd,
+ off_t offset);</synopsis>
+ DRM identifies the GEM object to be mapped by a fake offset passed
+ through the mmap offset argument. Prior to being mapped, a GEM object
+ must thus be associated with a fake offset. To do so, drivers must call
+ <function>drm_gem_create_mmap_offset</function> on the object. The
+ function allocates a fake offset range from a pool and stores the
+ offset divided by PAGE_SIZE in
+ <literal>obj-&gt;map_list.hash.key</literal>. Care must be taken not to
+ call <function>drm_gem_create_mmap_offset</function> if a fake offset
+ has already been allocated for the object. This can be tested by
+ <literal>obj-&gt;map_list.map</literal> being non-NULL.
+ </para>
+ <para>
+ Once allocated, the fake offset value
+ (<literal>obj-&gt;map_list.hash.key &lt;&lt; PAGE_SHIFT</literal>)
+ must be passed to the application in a driver-specific way and can then
+ be used as the mmap offset argument.
+ </para>
+ <para>
+ The GEM core provides a helper method <function>drm_gem_mmap</function>
+ to handle object mapping. The method can be set directly as the mmap
+ file operation handler. It will look up the GEM object based on the
+ offset value and set the VMA operations to the
+ <structname>drm_driver</structname> <structfield>gem_vm_ops</structfield>
+ field. Note that <function>drm_gem_mmap</function> doesn't map memory to
+ userspace, but relies on the driver-provided fault handler to map pages
+ individually.
+ </para>
+ <para>
+ To use <function>drm_gem_mmap</function>, drivers must fill the struct
+ <structname>drm_driver</structname> <structfield>gem_vm_ops</structfield>
+ field with a pointer to VM operations.
+ </para>
+ <para>
+ <synopsis>struct vm_operations_struct *gem_vm_ops
+
+ struct vm_operations_struct {
+ void (*open)(struct vm_area_struct * area);
+ void (*close)(struct vm_area_struct * area);
+ int (*fault)(struct vm_area_struct *vma, struct vm_fault *vmf);
+ };</synopsis>
+ </para>
+ <para>
+ The <methodname>open</methodname> and <methodname>close</methodname>
+ operations must update the GEM object reference count. Drivers can use
+ the <function>drm_gem_vm_open</function> and
+ <function>drm_gem_vm_close</function> helper functions directly as open
+ and close handlers.
+ </para>
+ <para>
+ The fault operation handler is responsible for mapping individual pages
+ to userspace when a page fault occurs. Depending on the memory
+ allocation scheme, drivers can allocate pages at fault time, or can
+ decide to allocate memory for the GEM object at the time the object is
+ created.
+ </para>
+ <para>
+ Drivers that want to map the GEM object upfront instead of handling page
+ faults can implement their own mmap file operation handler.
+ </para>
+ </sect3>
+ <sect3>
+ <title>Dumb GEM Objects</title>
+ <para>
+ The GEM API doesn't standardize GEM objects creation and leaves it to
+ driver-specific ioctls. While not an issue for full-fledged graphics
+ stacks that include device-specific userspace components (in libdrm for
+ instance), this limit makes DRM-based early boot graphics unnecessarily
+ complex.
+ </para>
+ <para>
+ Dumb GEM objects partly alleviate the problem by providing a standard
+ API to create dumb buffers suitable for scanout, which can then be used
+ to create KMS frame buffers.
+ </para>
+ <para>
+ To support dumb GEM objects drivers must implement the
+ <methodname>dumb_create</methodname>,
+ <methodname>dumb_destroy</methodname> and
+ <methodname>dumb_map_offset</methodname> operations.
+ </para>
+ <itemizedlist>
+ <listitem>
+ <synopsis>int (*dumb_create)(struct drm_file *file_priv, struct drm_device *dev,
+ struct drm_mode_create_dumb *args);</synopsis>
+ <para>
+ The <methodname>dumb_create</methodname> operation creates a GEM
+ object suitable for scanout based on the width, height and depth
+ from the struct <structname>drm_mode_create_dumb</structname>
+ argument. It fills the argument's <structfield>handle</structfield>,
+ <structfield>pitch</structfield> and <structfield>size</structfield>
+ fields with a handle for the newly created GEM object and its line
+ pitch and size in bytes.
+ </para>
+ </listitem>
+ <listitem>
+ <synopsis>int (*dumb_destroy)(struct drm_file *file_priv, struct drm_device *dev,
+ uint32_t handle);</synopsis>
+ <para>
+ The <methodname>dumb_destroy</methodname> operation destroys a dumb
+ GEM object created by <methodname>dumb_create</methodname>.
+ </para>
+ </listitem>
+ <listitem>
+ <synopsis>int (*dumb_map_offset)(struct drm_file *file_priv, struct drm_device *dev,
+ uint32_t handle, uint64_t *offset);</synopsis>
+ <para>
+ The <methodname>dumb_map_offset</methodname> operation associates an
+ mmap fake offset with the GEM object given by the handle and returns
+ it. Drivers must use the
+ <function>drm_gem_create_mmap_offset</function> function to
+ associate the fake offset as described in
+ <xref linkend="drm-gem-objects-mapping"/>.
+ </para>
+ </listitem>
+ </itemizedlist>
+ </sect3>
+ <sect3>
+ <title>Memory Coherency</title>
+ <para>
+ When mapped to the device or used in a command buffer, backing pages
+ for an object are flushed to memory and marked write combined so as to
+ be coherent with the GPU. Likewise, if the CPU accesses an object
+ after the GPU has finished rendering to the object, then the object
+ must be made coherent with the CPU's view of memory, usually involving
+ GPU cache flushing of various kinds. This core CPU&lt;-&gt;GPU
+ coherency management is provided by a device-specific ioctl, which
+ evaluates an object's current domain and performs any necessary
+ flushing or synchronization to put the object into the desired
+ coherency domain (note that the object may be busy, i.e. an active
+ render target; in that case, setting the domain blocks the client and
+ waits for rendering to complete before performing any necessary
+ flushing operations).
+ </para>
+ </sect3>
+ <sect3>
+ <title>Command Execution</title>
+ <para>
+ Perhaps the most important GEM function for GPU devices is providing a
+ command execution interface to clients. Client programs construct
+ command buffers containing references to previously allocated memory
+ objects, and then submit them to GEM. At that point, GEM takes care to
+ bind all the objects into the GTT, execute the buffer, and provide
+ necessary synchronization between clients accessing the same buffers.
+ This often involves evicting some objects from the GTT and re-binding
+ others (a fairly expensive operation), and providing relocation
+ support which hides fixed GTT offsets from clients. Clients must take
+ care not to submit command buffers that reference more objects than
+ can fit in the GTT; otherwise, GEM will reject them and no rendering
+ will occur. Similarly, if several objects in the buffer require fence
+ registers to be allocated for correct rendering (e.g. 2D blits on
+ pre-965 chips), care must be taken not to require more fence registers
+ than are available to the client. Such resource management should be
+ abstracted from the client in libdrm.
+ </para>
</sect3>
</sect2>
+ </sect1>
+ <!-- Internals: mode setting -->
+
+ <sect1 id="drm-mode-setting">
+ <title>Mode Setting</title>
+ <para>
+ Drivers must initialize the mode setting core by calling
+ <function>drm_mode_config_init</function> on the DRM device. The function
+ initializes the <structname>drm_device</structname>
+ <structfield>mode_config</structfield> field and never fails. Once done,
+ mode configuration must be setup by initializing the following fields.
+ </para>
+ <itemizedlist>
+ <listitem>
+ <synopsis>int min_width, min_height;
+int max_width, max_height;</synopsis>
+ <para>
+ Minimum and maximum width and height of the frame buffers in pixel
+ units.
+ </para>
+ </listitem>
+ <listitem>
+ <synopsis>struct drm_mode_config_funcs *funcs;</synopsis>
+ <para>Mode setting functions.</para>
+ </listitem>
+ </itemizedlist>
<sect2>
- <title>Output configuration</title>
+ <title>Frame Buffer Creation</title>
+ <synopsis>struct drm_framebuffer *(*fb_create)(struct drm_device *dev,
+ struct drm_file *file_priv,
+ struct drm_mode_fb_cmd2 *mode_cmd);</synopsis>
<para>
- The final initialization task is output configuration. This involves:
- <itemizedlist>
- <listitem>
- Finding and initializing the CRTCs, encoders, and connectors
- for the device.
- </listitem>
- <listitem>
- Creating an initial configuration.
- </listitem>
- <listitem>
- Registering a framebuffer console driver.
- </listitem>
- </itemizedlist>
+ Frame buffers are abstract memory objects that provide a source of
+ pixels to scanout to a CRTC. Applications explicitly request the
+ creation of frame buffers through the DRM_IOCTL_MODE_ADDFB(2) ioctls and
+ receive an opaque handle that can be passed to the KMS CRTC control,
+ plane configuration and page flip functions.
+ </para>
+ <para>
+ Frame buffers rely on the underneath memory manager for low-level memory
+ operations. When creating a frame buffer applications pass a memory
+ handle (or a list of memory handles for multi-planar formats) through
+ the <parameter>drm_mode_fb_cmd2</parameter> argument. This document
+ assumes that the driver uses GEM, those handles thus reference GEM
+ objects.
+ </para>
+ <para>
+ Drivers must first validate the requested frame buffer parameters passed
+ through the mode_cmd argument. In particular this is where invalid
+ sizes, pixel formats or pitches can be caught.
+ </para>
+ <para>
+ If the parameters are deemed valid, drivers then create, initialize and
+ return an instance of struct <structname>drm_framebuffer</structname>.
+ If desired the instance can be embedded in a larger driver-specific
+ structure. The new instance is initialized with a call to
+ <function>drm_framebuffer_init</function> which takes a pointer to DRM
+ frame buffer operations (struct
+ <structname>drm_framebuffer_funcs</structname>). Frame buffer operations are
+ <itemizedlist>
+ <listitem>
+ <synopsis>int (*create_handle)(struct drm_framebuffer *fb,
+ struct drm_file *file_priv, unsigned int *handle);</synopsis>
+ <para>
+ Create a handle to the frame buffer underlying memory object. If
+ the frame buffer uses a multi-plane format, the handle will
+ reference the memory object associated with the first plane.
+ </para>
+ <para>
+ Drivers call <function>drm_gem_handle_create</function> to create
+ the handle.
+ </para>
+ </listitem>
+ <listitem>
+ <synopsis>void (*destroy)(struct drm_framebuffer *framebuffer);</synopsis>
+ <para>
+ Destroy the frame buffer object and frees all associated
+ resources. Drivers must call
+ <function>drm_framebuffer_cleanup</function> to free resources
+ allocated by the DRM core for the frame buffer object, and must
+ make sure to unreference all memory objects associated with the
+ frame buffer. Handles created by the
+ <methodname>create_handle</methodname> operation are released by
+ the DRM core.
+ </para>
+ </listitem>
+ <listitem>
+ <synopsis>int (*dirty)(struct drm_framebuffer *framebuffer,
+ struct drm_file *file_priv, unsigned flags, unsigned color,
+ struct drm_clip_rect *clips, unsigned num_clips);</synopsis>
+ <para>
+ This optional operation notifies the driver that a region of the
+ frame buffer has changed in response to a DRM_IOCTL_MODE_DIRTYFB
+ ioctl call.
+ </para>
+ </listitem>
+ </itemizedlist>
+ </para>
+ <para>
+ After initializing the <structname>drm_framebuffer</structname>
+ instance drivers must fill its <structfield>width</structfield>,
+ <structfield>height</structfield>, <structfield>pitches</structfield>,
+ <structfield>offsets</structfield>, <structfield>depth</structfield>,
+ <structfield>bits_per_pixel</structfield> and
+ <structfield>pixel_format</structfield> fields from the values passed
+ through the <parameter>drm_mode_fb_cmd2</parameter> argument. They
+ should call the <function>drm_helper_mode_fill_fb_struct</function>
+ helper function to do so.
+ </para>
+ </sect2>
+ <sect2>
+ <title>Output Polling</title>
+ <synopsis>void (*output_poll_changed)(struct drm_device *dev);</synopsis>
+ <para>
+ This operation notifies the driver that the status of one or more
+ connectors has changed. Drivers that use the fb helper can just call the
+ <function>drm_fb_helper_hotplug_event</function> function to handle this
+ operation.
+ </para>
+ </sect2>
+ </sect1>
+
+ <!-- Internals: kms initialization and cleanup -->
+
+ <sect1 id="drm-kms-init">
+ <title>KMS Initialization and Cleanup</title>
+ <para>
+ A KMS device is abstracted and exposed as a set of planes, CRTCs, encoders
+ and connectors. KMS drivers must thus create and initialize all those
+ objects at load time after initializing mode setting.
+ </para>
+ <sect2>
+ <title>CRTCs (struct <structname>drm_crtc</structname>)</title>
+ <para>
+ A CRTC is an abstraction representing a part of the chip that contains a
+ pointer to a scanout buffer. Therefore, the number of CRTCs available
+ determines how many independent scanout buffers can be active at any
+ given time. The CRTC structure contains several fields to support this:
+ a pointer to some video memory (abstracted as a frame buffer object), a
+ display mode, and an (x, y) offset into the video memory to support
+ panning or configurations where one piece of video memory spans multiple
+ CRTCs.
</para>
<sect3>
- <title>Output discovery and initialization</title>
- <para>
- Several core functions exist to create CRTCs, encoders, and
- connectors, namely: drm_crtc_init(), drm_connector_init(), and
- drm_encoder_init(), along with several "helper" functions to
- perform common tasks.
- </para>
- <para>
- Connectors should be registered with sysfs once they've been
- detected and initialized, using the
- drm_sysfs_connector_add() function. Likewise, when they're
- removed from the system, they should be destroyed with
- drm_sysfs_connector_remove().
- </para>
- <programlisting>
-<![CDATA[
+ <title>CRTC Initialization</title>
+ <para>
+ A KMS device must create and register at least one struct
+ <structname>drm_crtc</structname> instance. The instance is allocated
+ and zeroed by the driver, possibly as part of a larger structure, and
+ registered with a call to <function>drm_crtc_init</function> with a
+ pointer to CRTC functions.
+ </para>
+ </sect3>
+ <sect3>
+ <title>CRTC Operations</title>
+ <sect4>
+ <title>Set Configuration</title>
+ <synopsis>int (*set_config)(struct drm_mode_set *set);</synopsis>
+ <para>
+ Apply a new CRTC configuration to the device. The configuration
+ specifies a CRTC, a frame buffer to scan out from, a (x,y) position in
+ the frame buffer, a display mode and an array of connectors to drive
+ with the CRTC if possible.
+ </para>
+ <para>
+ If the frame buffer specified in the configuration is NULL, the driver
+ must detach all encoders connected to the CRTC and all connectors
+ attached to those encoders and disable them.
+ </para>
+ <para>
+ This operation is called with the mode config lock held.
+ </para>
+ <note><para>
+ FIXME: How should set_config interact with DPMS? If the CRTC is
+ suspended, should it be resumed?
+ </para></note>
+ </sect4>
+ <sect4>
+ <title>Page Flipping</title>
+ <synopsis>int (*page_flip)(struct drm_crtc *crtc, struct drm_framebuffer *fb,
+ struct drm_pending_vblank_event *event);</synopsis>
+ <para>
+ Schedule a page flip to the given frame buffer for the CRTC. This
+ operation is called with the mode config mutex held.
+ </para>
+ <para>
+ Page flipping is a synchronization mechanism that replaces the frame
+ buffer being scanned out by the CRTC with a new frame buffer during
+ vertical blanking, avoiding tearing. When an application requests a page
+ flip the DRM core verifies that the new frame buffer is large enough to
+ be scanned out by the CRTC in the currently configured mode and then
+ calls the CRTC <methodname>page_flip</methodname> operation with a
+ pointer to the new frame buffer.
+ </para>
+ <para>
+ The <methodname>page_flip</methodname> operation schedules a page flip.
+ Once any pending rendering targetting the new frame buffer has
+ completed, the CRTC will be reprogrammed to display that frame buffer
+ after the next vertical refresh. The operation must return immediately
+ without waiting for rendering or page flip to complete and must block
+ any new rendering to the frame buffer until the page flip completes.
+ </para>
+ <para>
+ If a page flip is already pending, the
+ <methodname>page_flip</methodname> operation must return
+ -<errorname>EBUSY</errorname>.
+ </para>
+ <para>
+ To synchronize page flip to vertical blanking the driver will likely
+ need to enable vertical blanking interrupts. It should call
+ <function>drm_vblank_get</function> for that purpose, and call
+ <function>drm_vblank_put</function> after the page flip completes.
+ </para>
+ <para>
+ If the application has requested to be notified when page flip completes
+ the <methodname>page_flip</methodname> operation will be called with a
+ non-NULL <parameter>event</parameter> argument pointing to a
+ <structname>drm_pending_vblank_event</structname> instance. Upon page
+ flip completion the driver must call <methodname>drm_send_vblank_event</methodname>
+ to fill in the event and send to wake up any waiting processes.
+ This can be performed with
+ <programlisting><![CDATA[
+ spin_lock_irqsave(&dev->event_lock, flags);
+ ...
+ drm_send_vblank_event(dev, pipe, event);
+ spin_unlock_irqrestore(&dev->event_lock, flags);
+ ]]></programlisting>
+ </para>
+ <note><para>
+ FIXME: Could drivers that don't need to wait for rendering to complete
+ just add the event to <literal>dev-&gt;vblank_event_list</literal> and
+ let the DRM core handle everything, as for "normal" vertical blanking
+ events?
+ </para></note>
+ <para>
+ While waiting for the page flip to complete, the
+ <literal>event-&gt;base.link</literal> list head can be used freely by
+ the driver to store the pending event in a driver-specific list.
+ </para>
+ <para>
+ If the file handle is closed before the event is signaled, drivers must
+ take care to destroy the event in their
+ <methodname>preclose</methodname> operation (and, if needed, call
+ <function>drm_vblank_put</function>).
+ </para>
+ </sect4>
+ <sect4>
+ <title>Miscellaneous</title>
+ <itemizedlist>
+ <listitem>
+ <synopsis>void (*gamma_set)(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b,
+ uint32_t start, uint32_t size);</synopsis>
+ <para>
+ Apply a gamma table to the device. The operation is optional.
+ </para>
+ </listitem>
+ <listitem>
+ <synopsis>void (*destroy)(struct drm_crtc *crtc);</synopsis>
+ <para>
+ Destroy the CRTC when not needed anymore. See
+ <xref linkend="drm-kms-init"/>.
+ </para>
+ </listitem>
+ </itemizedlist>
+ </sect4>
+ </sect3>
+ </sect2>
+ <sect2>
+ <title>Planes (struct <structname>drm_plane</structname>)</title>
+ <para>
+ A plane represents an image source that can be blended with or overlayed
+ on top of a CRTC during the scanout process. Planes are associated with
+ a frame buffer to crop a portion of the image memory (source) and
+ optionally scale it to a destination size. The result is then blended
+ with or overlayed on top of a CRTC.
+ </para>
+ <sect3>
+ <title>Plane Initialization</title>
+ <para>
+ Planes are optional. To create a plane, a KMS drivers allocates and
+ zeroes an instances of struct <structname>drm_plane</structname>
+ (possibly as part of a larger structure) and registers it with a call
+ to <function>drm_plane_init</function>. The function takes a bitmask
+ of the CRTCs that can be associated with the plane, a pointer to the
+ plane functions and a list of format supported formats.
+ </para>
+ </sect3>
+ <sect3>
+ <title>Plane Operations</title>
+ <itemizedlist>
+ <listitem>
+ <synopsis>int (*update_plane)(struct drm_plane *plane, struct drm_crtc *crtc,
+ struct drm_framebuffer *fb, int crtc_x, int crtc_y,
+ unsigned int crtc_w, unsigned int crtc_h,
+ uint32_t src_x, uint32_t src_y,
+ uint32_t src_w, uint32_t src_h);</synopsis>
+ <para>
+ Enable and configure the plane to use the given CRTC and frame buffer.
+ </para>
+ <para>
+ The source rectangle in frame buffer memory coordinates is given by
+ the <parameter>src_x</parameter>, <parameter>src_y</parameter>,
+ <parameter>src_w</parameter> and <parameter>src_h</parameter>
+ parameters (as 16.16 fixed point values). Devices that don't support
+ subpixel plane coordinates can ignore the fractional part.
+ </para>
+ <para>
+ The destination rectangle in CRTC coordinates is given by the
+ <parameter>crtc_x</parameter>, <parameter>crtc_y</parameter>,
+ <parameter>crtc_w</parameter> and <parameter>crtc_h</parameter>
+ parameters (as integer values). Devices scale the source rectangle to
+ the destination rectangle. If scaling is not supported, and the source
+ rectangle size doesn't match the destination rectangle size, the
+ driver must return a -<errorname>EINVAL</errorname> error.
+ </para>
+ </listitem>
+ <listitem>
+ <synopsis>int (*disable_plane)(struct drm_plane *plane);</synopsis>
+ <para>
+ Disable the plane. The DRM core calls this method in response to a
+ DRM_IOCTL_MODE_SETPLANE ioctl call with the frame buffer ID set to 0.
+ Disabled planes must not be processed by the CRTC.
+ </para>
+ </listitem>
+ <listitem>
+ <synopsis>void (*destroy)(struct drm_plane *plane);</synopsis>
+ <para>
+ Destroy the plane when not needed anymore. See
+ <xref linkend="drm-kms-init"/>.
+ </para>
+ </listitem>
+ </itemizedlist>
+ </sect3>
+ </sect2>
+ <sect2>
+ <title>Encoders (struct <structname>drm_encoder</structname>)</title>
+ <para>
+ An encoder takes pixel data from a CRTC and converts it to a format
+ suitable for any attached connectors. On some devices, it may be
+ possible to have a CRTC send data to more than one encoder. In that
+ case, both encoders would receive data from the same scanout buffer,
+ resulting in a "cloned" display configuration across the connectors
+ attached to each encoder.
+ </para>
+ <sect3>
+ <title>Encoder Initialization</title>
+ <para>
+ As for CRTCs, a KMS driver must create, initialize and register at
+ least one struct <structname>drm_encoder</structname> instance. The
+ instance is allocated and zeroed by the driver, possibly as part of a
+ larger structure.
+ </para>
+ <para>
+ Drivers must initialize the struct <structname>drm_encoder</structname>
+ <structfield>possible_crtcs</structfield> and
+ <structfield>possible_clones</structfield> fields before registering the
+ encoder. Both fields are bitmasks of respectively the CRTCs that the
+ encoder can be connected to, and sibling encoders candidate for cloning.
+ </para>
+ <para>
+ After being initialized, the encoder must be registered with a call to
+ <function>drm_encoder_init</function>. The function takes a pointer to
+ the encoder functions and an encoder type. Supported types are
+ <itemizedlist>
+ <listitem>
+ DRM_MODE_ENCODER_DAC for VGA and analog on DVI-I/DVI-A
+ </listitem>
+ <listitem>
+ DRM_MODE_ENCODER_TMDS for DVI, HDMI and (embedded) DisplayPort
+ </listitem>
+ <listitem>
+ DRM_MODE_ENCODER_LVDS for display panels
+ </listitem>
+ <listitem>
+ DRM_MODE_ENCODER_TVDAC for TV output (Composite, S-Video, Component,
+ SCART)
+ </listitem>
+ <listitem>
+ DRM_MODE_ENCODER_VIRTUAL for virtual machine displays
+ </listitem>
+ </itemizedlist>
+ </para>
+ <para>
+ Encoders must be attached to a CRTC to be used. DRM drivers leave
+ encoders unattached at initialization time. Applications (or the fbdev
+ compatibility layer when implemented) are responsible for attaching the
+ encoders they want to use to a CRTC.
+ </para>
+ </sect3>
+ <sect3>
+ <title>Encoder Operations</title>
+ <itemizedlist>
+ <listitem>
+ <synopsis>void (*destroy)(struct drm_encoder *encoder);</synopsis>
+ <para>
+ Called to destroy the encoder when not needed anymore. See
+ <xref linkend="drm-kms-init"/>.
+ </para>
+ </listitem>
+ </itemizedlist>
+ </sect3>
+ </sect2>
+ <sect2>
+ <title>Connectors (struct <structname>drm_connector</structname>)</title>
+ <para>
+ A connector is the final destination for pixel data on a device, and
+ usually connects directly to an external display device like a monitor
+ or laptop panel. A connector can only be attached to one encoder at a
+ time. The connector is also the structure where information about the
+ attached display is kept, so it contains fields for display data, EDID
+ data, DPMS &amp; connection status, and information about modes
+ supported on the attached displays.
+ </para>
+ <sect3>
+ <title>Connector Initialization</title>
+ <para>
+ Finally a KMS driver must create, initialize, register and attach at
+ least one struct <structname>drm_connector</structname> instance. The
+ instance is created as other KMS objects and initialized by setting the
+ following fields.
+ </para>
+ <variablelist>
+ <varlistentry>
+ <term><structfield>interlace_allowed</structfield></term>
+ <listitem><para>
+ Whether the connector can handle interlaced modes.
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><structfield>doublescan_allowed</structfield></term>
+ <listitem><para>
+ Whether the connector can handle doublescan.
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><structfield>display_info
+ </structfield></term>
+ <listitem><para>
+ Display information is filled from EDID information when a display
+ is detected. For non hot-pluggable displays such as flat panels in
+ embedded systems, the driver should initialize the
+ <structfield>display_info</structfield>.<structfield>width_mm</structfield>
+ and
+ <structfield>display_info</structfield>.<structfield>height_mm</structfield>
+ fields with the physical size of the display.
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term id="drm-kms-connector-polled"><structfield>polled</structfield></term>
+ <listitem><para>
+ Connector polling mode, a combination of
+ <variablelist>
+ <varlistentry>
+ <term>DRM_CONNECTOR_POLL_HPD</term>
+ <listitem><para>
+ The connector generates hotplug events and doesn't need to be
+ periodically polled. The CONNECT and DISCONNECT flags must not
+ be set together with the HPD flag.
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRM_CONNECTOR_POLL_CONNECT</term>
+ <listitem><para>
+ Periodically poll the connector for connection.
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRM_CONNECTOR_POLL_DISCONNECT</term>
+ <listitem><para>
+ Periodically poll the connector for disconnection.
+ </para></listitem>
+ </varlistentry>
+ </variablelist>
+ Set to 0 for connectors that don't support connection status
+ discovery.
+ </para></listitem>
+ </varlistentry>
+ </variablelist>
+ <para>
+ The connector is then registered with a call to
+ <function>drm_connector_init</function> with a pointer to the connector
+ functions and a connector type, and exposed through sysfs with a call to
+ <function>drm_sysfs_connector_add</function>.
+ </para>
+ <para>
+ Supported connector types are
+ <itemizedlist>
+ <listitem>DRM_MODE_CONNECTOR_VGA</listitem>
+ <listitem>DRM_MODE_CONNECTOR_DVII</listitem>
+ <listitem>DRM_MODE_CONNECTOR_DVID</listitem>
+ <listitem>DRM_MODE_CONNECTOR_DVIA</listitem>
+ <listitem>DRM_MODE_CONNECTOR_Composite</listitem>
+ <listitem>DRM_MODE_CONNECTOR_SVIDEO</listitem>
+ <listitem>DRM_MODE_CONNECTOR_LVDS</listitem>
+ <listitem>DRM_MODE_CONNECTOR_Component</listitem>
+ <listitem>DRM_MODE_CONNECTOR_9PinDIN</listitem>
+ <listitem>DRM_MODE_CONNECTOR_DisplayPort</listitem>
+ <listitem>DRM_MODE_CONNECTOR_HDMIA</listitem>
+ <listitem>DRM_MODE_CONNECTOR_HDMIB</listitem>
+ <listitem>DRM_MODE_CONNECTOR_TV</listitem>
+ <listitem>DRM_MODE_CONNECTOR_eDP</listitem>
+ <listitem>DRM_MODE_CONNECTOR_VIRTUAL</listitem>
+ </itemizedlist>
+ </para>
+ <para>
+ Connectors must be attached to an encoder to be used. For devices that
+ map connectors to encoders 1:1, the connector should be attached at
+ initialization time with a call to
+ <function>drm_mode_connector_attach_encoder</function>. The driver must
+ also set the <structname>drm_connector</structname>
+ <structfield>encoder</structfield> field to point to the attached
+ encoder.
+ </para>
+ <para>
+ Finally, drivers must initialize the connectors state change detection
+ with a call to <function>drm_kms_helper_poll_init</function>. If at
+ least one connector is pollable but can't generate hotplug interrupts
+ (indicated by the DRM_CONNECTOR_POLL_CONNECT and
+ DRM_CONNECTOR_POLL_DISCONNECT connector flags), a delayed work will
+ automatically be queued to periodically poll for changes. Connectors
+ that can generate hotplug interrupts must be marked with the
+ DRM_CONNECTOR_POLL_HPD flag instead, and their interrupt handler must
+ call <function>drm_helper_hpd_irq_event</function>. The function will
+ queue a delayed work to check the state of all connectors, but no
+ periodic polling will be done.
+ </para>
+ </sect3>
+ <sect3>
+ <title>Connector Operations</title>
+ <note><para>
+ Unless otherwise state, all operations are mandatory.
+ </para></note>
+ <sect4>
+ <title>DPMS</title>
+ <synopsis>void (*dpms)(struct drm_connector *connector, int mode);</synopsis>
+ <para>
+ The DPMS operation sets the power state of a connector. The mode
+ argument is one of
+ <itemizedlist>
+ <listitem><para>DRM_MODE_DPMS_ON</para></listitem>
+ <listitem><para>DRM_MODE_DPMS_STANDBY</para></listitem>
+ <listitem><para>DRM_MODE_DPMS_SUSPEND</para></listitem>
+ <listitem><para>DRM_MODE_DPMS_OFF</para></listitem>
+ </itemizedlist>
+ </para>
+ <para>
+ In all but DPMS_ON mode the encoder to which the connector is attached
+ should put the display in low-power mode by driving its signals
+ appropriately. If more than one connector is attached to the encoder
+ care should be taken not to change the power state of other displays as
+ a side effect. Low-power mode should be propagated to the encoders and
+ CRTCs when all related connectors are put in low-power mode.
+ </para>
+ </sect4>
+ <sect4>
+ <title>Modes</title>
+ <synopsis>int (*fill_modes)(struct drm_connector *connector, uint32_t max_width,
+ uint32_t max_height);</synopsis>
+ <para>
+ Fill the mode list with all supported modes for the connector. If the
+ <parameter>max_width</parameter> and <parameter>max_height</parameter>
+ arguments are non-zero, the implementation must ignore all modes wider
+ than <parameter>max_width</parameter> or higher than
+ <parameter>max_height</parameter>.
+ </para>
+ <para>
+ The connector must also fill in this operation its
+ <structfield>display_info</structfield>
+ <structfield>width_mm</structfield> and
+ <structfield>height_mm</structfield> fields with the connected display
+ physical size in millimeters. The fields should be set to 0 if the value
+ isn't known or is not applicable (for instance for projector devices).
+ </para>
+ </sect4>
+ <sect4>
+ <title>Connection Status</title>
+ <para>
+ The connection status is updated through polling or hotplug events when
+ supported (see <xref linkend="drm-kms-connector-polled"/>). The status
+ value is reported to userspace through ioctls and must not be used
+ inside the driver, as it only gets initialized by a call to
+ <function>drm_mode_getconnector</function> from userspace.
+ </para>
+ <synopsis>enum drm_connector_status (*detect)(struct drm_connector *connector,
+ bool force);</synopsis>
+ <para>
+ Check to see if anything is attached to the connector. The
+ <parameter>force</parameter> parameter is set to false whilst polling or
+ to true when checking the connector due to user request.
+ <parameter>force</parameter> can be used by the driver to avoid
+ expensive, destructive operations during automated probing.
+ </para>
+ <para>
+ Return connector_status_connected if something is connected to the
+ connector, connector_status_disconnected if nothing is connected and
+ connector_status_unknown if the connection state isn't known.
+ </para>
+ <para>
+ Drivers should only return connector_status_connected if the connection
+ status has really been probed as connected. Connectors that can't detect
+ the connection status, or failed connection status probes, should return
+ connector_status_unknown.
+ </para>
+ </sect4>
+ <sect4>
+ <title>Miscellaneous</title>
+ <itemizedlist>
+ <listitem>
+ <synopsis>void (*destroy)(struct drm_connector *connector);</synopsis>
+ <para>
+ Destroy the connector when not needed anymore. See
+ <xref linkend="drm-kms-init"/>.
+ </para>
+ </listitem>
+ </itemizedlist>
+ </sect4>
+ </sect3>
+ </sect2>
+ <sect2>
+ <title>Cleanup</title>
+ <para>
+ The DRM core manages its objects' lifetime. When an object is not needed
+ anymore the core calls its destroy function, which must clean up and
+ free every resource allocated for the object. Every
+ <function>drm_*_init</function> call must be matched with a
+ corresponding <function>drm_*_cleanup</function> call to cleanup CRTCs
+ (<function>drm_crtc_cleanup</function>), planes
+ (<function>drm_plane_cleanup</function>), encoders
+ (<function>drm_encoder_cleanup</function>) and connectors
+ (<function>drm_connector_cleanup</function>). Furthermore, connectors
+ that have been added to sysfs must be removed by a call to
+ <function>drm_sysfs_connector_remove</function> before calling
+ <function>drm_connector_cleanup</function>.
+ </para>
+ <para>
+ Connectors state change detection must be cleanup up with a call to
+ <function>drm_kms_helper_poll_fini</function>.
+ </para>
+ </sect2>
+ <sect2>
+ <title>Output discovery and initialization example</title>
+ <programlisting><![CDATA[
void intel_crt_init(struct drm_device *dev)
{
struct drm_connector *connector;
@@ -556,252 +1600,756 @@ void intel_crt_init(struct drm_device *dev)
drm_connector_helper_add(connector, &intel_crt_connector_helper_funcs);
drm_sysfs_connector_add(connector);
-}
-]]>
- </programlisting>
- <para>
- In the example above (again, taken from the i915 driver), a
- CRT connector and encoder combination is created. A device-specific
- i2c bus is also created for fetching EDID data and
- performing monitor detection. Once the process is complete,
- the new connector is registered with sysfs to make its
- properties available to applications.
- </para>
- <sect4>
- <title>Helper functions and core functions</title>
- <para>
- Since many PC-class graphics devices have similar display output
- designs, the DRM provides a set of helper functions to make
- output management easier. The core helper routines handle
- encoder re-routing and the disabling of unused functions following
- mode setting. Using the helpers is optional, but recommended for
- devices with PC-style architectures (i.e. a set of display planes
- for feeding pixels to encoders which are in turn routed to
- connectors). Devices with more complex requirements needing
- finer grained management may opt to use the core callbacks
- directly.
- </para>
- <para>
- [Insert typical diagram here.] [Insert OMAP style config here.]
- </para>
- </sect4>
- <para>
- Each encoder object needs to provide:
- <itemizedlist>
- <listitem>
- A DPMS (basically on/off) function.
- </listitem>
- <listitem>
- A mode-fixup function (for converting requested modes into
- native hardware timings).
- </listitem>
- <listitem>
- Functions (prepare, set, and commit) for use by the core DRM
- helper functions.
- </listitem>
- </itemizedlist>
- Connector helpers need to provide functions (mode-fetch, validity,
- and encoder-matching) for returning an ideal encoder for a given
- connector. The core connector functions include a DPMS callback,
- save/restore routines (deprecated), detection, mode probing,
- property handling, and cleanup functions.
- </para>
-<!--!Edrivers/char/drm/drm_crtc.h-->
-<!--!Edrivers/char/drm/drm_crtc.c-->
-<!--!Edrivers/char/drm/drm_crtc_helper.c-->
- </sect3>
+}]]></programlisting>
+ <para>
+ In the example above (taken from the i915 driver), a CRTC, connector and
+ encoder combination is created. A device-specific i2c bus is also
+ created for fetching EDID data and performing monitor detection. Once
+ the process is complete, the new connector is registered with sysfs to
+ make its properties available to applications.
+ </para>
</sect2>
</sect1>
- <!-- Internals: vblank handling -->
+ <!-- Internals: kms helper functions -->
<sect1>
- <title>VBlank event handling</title>
+ <title>Mode Setting Helper Functions</title>
<para>
- The DRM core exposes two vertical blank related ioctls:
- <variablelist>
- <varlistentry>
- <term>DRM_IOCTL_WAIT_VBLANK</term>
- <listitem>
- <para>
- This takes a struct drm_wait_vblank structure as its argument,
- and it is used to block or request a signal when a specified
- vblank event occurs.
- </para>
- </listitem>
- </varlistentry>
- <varlistentry>
- <term>DRM_IOCTL_MODESET_CTL</term>
- <listitem>
- <para>
- This should be called by application level drivers before and
- after mode setting, since on many devices the vertical blank
- counter is reset at that time. Internally, the DRM snapshots
- the last vblank count when the ioctl is called with the
- _DRM_PRE_MODESET command, so that the counter won't go backwards
- (which is dealt with when _DRM_POST_MODESET is used).
- </para>
- </listitem>
- </varlistentry>
- </variablelist>
-<!--!Edrivers/char/drm/drm_irq.c-->
+ The CRTC, encoder and connector functions provided by the drivers
+ implement the DRM API. They're called by the DRM core and ioctl handlers
+ to handle device state changes and configuration request. As implementing
+ those functions often requires logic not specific to drivers, mid-layer
+ helper functions are available to avoid duplicating boilerplate code.
+ </para>
+ <para>
+ The DRM core contains one mid-layer implementation. The mid-layer provides
+ implementations of several CRTC, encoder and connector functions (called
+ from the top of the mid-layer) that pre-process requests and call
+ lower-level functions provided by the driver (at the bottom of the
+ mid-layer). For instance, the
+ <function>drm_crtc_helper_set_config</function> function can be used to
+ fill the struct <structname>drm_crtc_funcs</structname>
+ <structfield>set_config</structfield> field. When called, it will split
+ the <methodname>set_config</methodname> operation in smaller, simpler
+ operations and call the driver to handle them.
</para>
<para>
- To support the functions above, the DRM core provides several
- helper functions for tracking vertical blank counters, and
- requires drivers to provide several callbacks:
- get_vblank_counter(), enable_vblank() and disable_vblank(). The
- core uses get_vblank_counter() to keep the counter accurate
- across interrupt disable periods. It should return the current
- vertical blank event count, which is often tracked in a device
- register. The enable and disable vblank callbacks should enable
- and disable vertical blank interrupts, respectively. In the
- absence of DRM clients waiting on vblank events, the core DRM
- code uses the disable_vblank() function to disable
- interrupts, which saves power. They are re-enabled again when
- a client calls the vblank wait ioctl above.
+ To use the mid-layer, drivers call <function>drm_crtc_helper_add</function>,
+ <function>drm_encoder_helper_add</function> and
+ <function>drm_connector_helper_add</function> functions to install their
+ mid-layer bottom operations handlers, and fill the
+ <structname>drm_crtc_funcs</structname>,
+ <structname>drm_encoder_funcs</structname> and
+ <structname>drm_connector_funcs</structname> structures with pointers to
+ the mid-layer top API functions. Installing the mid-layer bottom operation
+ handlers is best done right after registering the corresponding KMS object.
</para>
<para>
- A device that doesn't provide a count register may simply use an
- internal atomic counter incremented on every vertical blank
- interrupt (and then treat the enable_vblank() and disable_vblank()
- callbacks as no-ops).
+ The mid-layer is not split between CRTC, encoder and connector operations.
+ To use it, a driver must provide bottom functions for all of the three KMS
+ entities.
</para>
+ <sect2>
+ <title>Helper Functions</title>
+ <itemizedlist>
+ <listitem>
+ <synopsis>int drm_crtc_helper_set_config(struct drm_mode_set *set);</synopsis>
+ <para>
+ The <function>drm_crtc_helper_set_config</function> helper function
+ is a CRTC <methodname>set_config</methodname> implementation. It
+ first tries to locate the best encoder for each connector by calling
+ the connector <methodname>best_encoder</methodname> helper
+ operation.
+ </para>
+ <para>
+ After locating the appropriate encoders, the helper function will
+ call the <methodname>mode_fixup</methodname> encoder and CRTC helper
+ operations to adjust the requested mode, or reject it completely in
+ which case an error will be returned to the application. If the new
+ configuration after mode adjustment is identical to the current
+ configuration the helper function will return without performing any
+ other operation.
+ </para>
+ <para>
+ If the adjusted mode is identical to the current mode but changes to
+ the frame buffer need to be applied, the
+ <function>drm_crtc_helper_set_config</function> function will call
+ the CRTC <methodname>mode_set_base</methodname> helper operation. If
+ the adjusted mode differs from the current mode, or if the
+ <methodname>mode_set_base</methodname> helper operation is not
+ provided, the helper function performs a full mode set sequence by
+ calling the <methodname>prepare</methodname>,
+ <methodname>mode_set</methodname> and
+ <methodname>commit</methodname> CRTC and encoder helper operations,
+ in that order.
+ </para>
+ </listitem>
+ <listitem>
+ <synopsis>void drm_helper_connector_dpms(struct drm_connector *connector, int mode);</synopsis>
+ <para>
+ The <function>drm_helper_connector_dpms</function> helper function
+ is a connector <methodname>dpms</methodname> implementation that
+ tracks power state of connectors. To use the function, drivers must
+ provide <methodname>dpms</methodname> helper operations for CRTCs
+ and encoders to apply the DPMS state to the device.
+ </para>
+ <para>
+ The mid-layer doesn't track the power state of CRTCs and encoders.
+ The <methodname>dpms</methodname> helper operations can thus be
+ called with a mode identical to the currently active mode.
+ </para>
+ </listitem>
+ <listitem>
+ <synopsis>int drm_helper_probe_single_connector_modes(struct drm_connector *connector,
+ uint32_t maxX, uint32_t maxY);</synopsis>
+ <para>
+ The <function>drm_helper_probe_single_connector_modes</function> helper
+ function is a connector <methodname>fill_modes</methodname>
+ implementation that updates the connection status for the connector
+ and then retrieves a list of modes by calling the connector
+ <methodname>get_modes</methodname> helper operation.
+ </para>
+ <para>
+ The function filters out modes larger than
+ <parameter>max_width</parameter> and <parameter>max_height</parameter>
+ if specified. It then calls the connector
+ <methodname>mode_valid</methodname> helper operation for each mode in
+ the probed list to check whether the mode is valid for the connector.
+ </para>
+ </listitem>
+ </itemizedlist>
+ </sect2>
+ <sect2>
+ <title>CRTC Helper Operations</title>
+ <itemizedlist>
+ <listitem id="drm-helper-crtc-mode-fixup">
+ <synopsis>bool (*mode_fixup)(struct drm_crtc *crtc,
+ const struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode);</synopsis>
+ <para>
+ Let CRTCs adjust the requested mode or reject it completely. This
+ operation returns true if the mode is accepted (possibly after being
+ adjusted) or false if it is rejected.
+ </para>
+ <para>
+ The <methodname>mode_fixup</methodname> operation should reject the
+ mode if it can't reasonably use it. The definition of "reasonable"
+ is currently fuzzy in this context. One possible behaviour would be
+ to set the adjusted mode to the panel timings when a fixed-mode
+ panel is used with hardware capable of scaling. Another behaviour
+ would be to accept any input mode and adjust it to the closest mode
+ supported by the hardware (FIXME: This needs to be clarified).
+ </para>
+ </listitem>
+ <listitem>
+ <synopsis>int (*mode_set_base)(struct drm_crtc *crtc, int x, int y,
+ struct drm_framebuffer *old_fb)</synopsis>
+ <para>
+ Move the CRTC on the current frame buffer (stored in
+ <literal>crtc-&gt;fb</literal>) to position (x,y). Any of the frame
+ buffer, x position or y position may have been modified.
+ </para>
+ <para>
+ This helper operation is optional. If not provided, the
+ <function>drm_crtc_helper_set_config</function> function will fall
+ back to the <methodname>mode_set</methodname> helper operation.
+ </para>
+ <note><para>
+ FIXME: Why are x and y passed as arguments, as they can be accessed
+ through <literal>crtc-&gt;x</literal> and
+ <literal>crtc-&gt;y</literal>?
+ </para></note>
+ </listitem>
+ <listitem>
+ <synopsis>void (*prepare)(struct drm_crtc *crtc);</synopsis>
+ <para>
+ Prepare the CRTC for mode setting. This operation is called after
+ validating the requested mode. Drivers use it to perform
+ device-specific operations required before setting the new mode.
+ </para>
+ </listitem>
+ <listitem>
+ <synopsis>int (*mode_set)(struct drm_crtc *crtc, struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode, int x, int y,
+ struct drm_framebuffer *old_fb);</synopsis>
+ <para>
+ Set a new mode, position and frame buffer. Depending on the device
+ requirements, the mode can be stored internally by the driver and
+ applied in the <methodname>commit</methodname> operation, or
+ programmed to the hardware immediately.
+ </para>
+ <para>
+ The <methodname>mode_set</methodname> operation returns 0 on success
+ or a negative error code if an error occurs.
+ </para>
+ </listitem>
+ <listitem>
+ <synopsis>void (*commit)(struct drm_crtc *crtc);</synopsis>
+ <para>
+ Commit a mode. This operation is called after setting the new mode.
+ Upon return the device must use the new mode and be fully
+ operational.
+ </para>
+ </listitem>
+ </itemizedlist>
+ </sect2>
+ <sect2>
+ <title>Encoder Helper Operations</title>
+ <itemizedlist>
+ <listitem>
+ <synopsis>bool (*mode_fixup)(struct drm_encoder *encoder,
+ const struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode);</synopsis>
+ <note><para>
+ FIXME: The mode argument be const, but the i915 driver modifies
+ mode-&gt;clock in <function>intel_dp_mode_fixup</function>.
+ </para></note>
+ <para>
+ Let encoders adjust the requested mode or reject it completely. This
+ operation returns true if the mode is accepted (possibly after being
+ adjusted) or false if it is rejected. See the
+ <link linkend="drm-helper-crtc-mode-fixup">mode_fixup CRTC helper
+ operation</link> for an explanation of the allowed adjustments.
+ </para>
+ </listitem>
+ <listitem>
+ <synopsis>void (*prepare)(struct drm_encoder *encoder);</synopsis>
+ <para>
+ Prepare the encoder for mode setting. This operation is called after
+ validating the requested mode. Drivers use it to perform
+ device-specific operations required before setting the new mode.
+ </para>
+ </listitem>
+ <listitem>
+ <synopsis>void (*mode_set)(struct drm_encoder *encoder,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode);</synopsis>
+ <para>
+ Set a new mode. Depending on the device requirements, the mode can
+ be stored internally by the driver and applied in the
+ <methodname>commit</methodname> operation, or programmed to the
+ hardware immediately.
+ </para>
+ </listitem>
+ <listitem>
+ <synopsis>void (*commit)(struct drm_encoder *encoder);</synopsis>
+ <para>
+ Commit a mode. This operation is called after setting the new mode.
+ Upon return the device must use the new mode and be fully
+ operational.
+ </para>
+ </listitem>
+ </itemizedlist>
+ </sect2>
+ <sect2>
+ <title>Connector Helper Operations</title>
+ <itemizedlist>
+ <listitem>
+ <synopsis>struct drm_encoder *(*best_encoder)(struct drm_connector *connector);</synopsis>
+ <para>
+ Return a pointer to the best encoder for the connecter. Device that
+ map connectors to encoders 1:1 simply return the pointer to the
+ associated encoder. This operation is mandatory.
+ </para>
+ </listitem>
+ <listitem>
+ <synopsis>int (*get_modes)(struct drm_connector *connector);</synopsis>
+ <para>
+ Fill the connector's <structfield>probed_modes</structfield> list
+ by parsing EDID data with <function>drm_add_edid_modes</function> or
+ calling <function>drm_mode_probed_add</function> directly for every
+ supported mode and return the number of modes it has detected. This
+ operation is mandatory.
+ </para>
+ <para>
+ When adding modes manually the driver creates each mode with a call to
+ <function>drm_mode_create</function> and must fill the following fields.
+ <itemizedlist>
+ <listitem>
+ <synopsis>__u32 type;</synopsis>
+ <para>
+ Mode type bitmask, a combination of
+ <variablelist>
+ <varlistentry>
+ <term>DRM_MODE_TYPE_BUILTIN</term>
+ <listitem><para>not used?</para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRM_MODE_TYPE_CLOCK_C</term>
+ <listitem><para>not used?</para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRM_MODE_TYPE_CRTC_C</term>
+ <listitem><para>not used?</para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ DRM_MODE_TYPE_PREFERRED - The preferred mode for the connector
+ </term>
+ <listitem>
+ <para>not used?</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRM_MODE_TYPE_DEFAULT</term>
+ <listitem><para>not used?</para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRM_MODE_TYPE_USERDEF</term>
+ <listitem><para>not used?</para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRM_MODE_TYPE_DRIVER</term>
+ <listitem>
+ <para>
+ The mode has been created by the driver (as opposed to
+ to user-created modes).
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ Drivers must set the DRM_MODE_TYPE_DRIVER bit for all modes they
+ create, and set the DRM_MODE_TYPE_PREFERRED bit for the preferred
+ mode.
+ </para>
+ </listitem>
+ <listitem>
+ <synopsis>__u32 clock;</synopsis>
+ <para>Pixel clock frequency in kHz unit</para>
+ </listitem>
+ <listitem>
+ <synopsis>__u16 hdisplay, hsync_start, hsync_end, htotal;
+ __u16 vdisplay, vsync_start, vsync_end, vtotal;</synopsis>
+ <para>Horizontal and vertical timing information</para>
+ <screen><![CDATA[
+ Active Front Sync Back
+ Region Porch Porch
+ <-----------------------><----------------><-------------><-------------->
+
+ //////////////////////|
+ ////////////////////// |
+ ////////////////////// |.................. ................
+ _______________
+
+ <----- [hv]display ----->
+ <------------- [hv]sync_start ------------>
+ <--------------------- [hv]sync_end --------------------->
+ <-------------------------------- [hv]total ----------------------------->
+]]></screen>
+ </listitem>
+ <listitem>
+ <synopsis>__u16 hskew;
+ __u16 vscan;</synopsis>
+ <para>Unknown</para>
+ </listitem>
+ <listitem>
+ <synopsis>__u32 flags;</synopsis>
+ <para>
+ Mode flags, a combination of
+ <variablelist>
+ <varlistentry>
+ <term>DRM_MODE_FLAG_PHSYNC</term>
+ <listitem><para>
+ Horizontal sync is active high
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRM_MODE_FLAG_NHSYNC</term>
+ <listitem><para>
+ Horizontal sync is active low
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRM_MODE_FLAG_PVSYNC</term>
+ <listitem><para>
+ Vertical sync is active high
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRM_MODE_FLAG_NVSYNC</term>
+ <listitem><para>
+ Vertical sync is active low
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRM_MODE_FLAG_INTERLACE</term>
+ <listitem><para>
+ Mode is interlaced
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRM_MODE_FLAG_DBLSCAN</term>
+ <listitem><para>
+ Mode uses doublescan
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRM_MODE_FLAG_CSYNC</term>
+ <listitem><para>
+ Mode uses composite sync
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRM_MODE_FLAG_PCSYNC</term>
+ <listitem><para>
+ Composite sync is active high
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRM_MODE_FLAG_NCSYNC</term>
+ <listitem><para>
+ Composite sync is active low
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRM_MODE_FLAG_HSKEW</term>
+ <listitem><para>
+ hskew provided (not used?)
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRM_MODE_FLAG_BCAST</term>
+ <listitem><para>
+ not used?
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRM_MODE_FLAG_PIXMUX</term>
+ <listitem><para>
+ not used?
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRM_MODE_FLAG_DBLCLK</term>
+ <listitem><para>
+ not used?
+ </para></listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRM_MODE_FLAG_CLKDIV2</term>
+ <listitem><para>
+ ?
+ </para></listitem>
+ </varlistentry>
+ </variablelist>
+ </para>
+ <para>
+ Note that modes marked with the INTERLACE or DBLSCAN flags will be
+ filtered out by
+ <function>drm_helper_probe_single_connector_modes</function> if
+ the connector's <structfield>interlace_allowed</structfield> or
+ <structfield>doublescan_allowed</structfield> field is set to 0.
+ </para>
+ </listitem>
+ <listitem>
+ <synopsis>char name[DRM_DISPLAY_MODE_LEN];</synopsis>
+ <para>
+ Mode name. The driver must call
+ <function>drm_mode_set_name</function> to fill the mode name from
+ <structfield>hdisplay</structfield>,
+ <structfield>vdisplay</structfield> and interlace flag after
+ filling the corresponding fields.
+ </para>
+ </listitem>
+ </itemizedlist>
+ </para>
+ <para>
+ The <structfield>vrefresh</structfield> value is computed by
+ <function>drm_helper_probe_single_connector_modes</function>.
+ </para>
+ <para>
+ When parsing EDID data, <function>drm_add_edid_modes</function> fill the
+ connector <structfield>display_info</structfield>
+ <structfield>width_mm</structfield> and
+ <structfield>height_mm</structfield> fields. When creating modes
+ manually the <methodname>get_modes</methodname> helper operation must
+ set the <structfield>display_info</structfield>
+ <structfield>width_mm</structfield> and
+ <structfield>height_mm</structfield> fields if they haven't been set
+ already (for instance at initilization time when a fixed-size panel is
+ attached to the connector). The mode <structfield>width_mm</structfield>
+ and <structfield>height_mm</structfield> fields are only used internally
+ during EDID parsing and should not be set when creating modes manually.
+ </para>
+ </listitem>
+ <listitem>
+ <synopsis>int (*mode_valid)(struct drm_connector *connector,
+ struct drm_display_mode *mode);</synopsis>
+ <para>
+ Verify whether a mode is valid for the connector. Return MODE_OK for
+ supported modes and one of the enum drm_mode_status values (MODE_*)
+ for unsupported modes. This operation is mandatory.
+ </para>
+ <para>
+ As the mode rejection reason is currently not used beside for
+ immediately removing the unsupported mode, an implementation can
+ return MODE_BAD regardless of the exact reason why the mode is not
+ valid.
+ </para>
+ <note><para>
+ Note that the <methodname>mode_valid</methodname> helper operation is
+ only called for modes detected by the device, and
+ <emphasis>not</emphasis> for modes set by the user through the CRTC
+ <methodname>set_config</methodname> operation.
+ </para></note>
+ </listitem>
+ </itemizedlist>
+ </sect2>
+ <sect2>
+ <title>Modeset Helper Functions Reference</title>
+!Edrivers/gpu/drm/drm_crtc_helper.c
+ </sect2>
+ <sect2>
+ <title>fbdev Helper Functions Reference</title>
+!Pdrivers/gpu/drm/drm_fb_helper.c fbdev helpers
+!Edrivers/gpu/drm/drm_fb_helper.c
+ </sect2>
+ <sect2>
+ <title>Display Port Helper Functions Reference</title>
+!Pdrivers/gpu/drm/drm_dp_helper.c dp helpers
+!Iinclude/drm/drm_dp_helper.h
+!Edrivers/gpu/drm/drm_dp_helper.c
+ </sect2>
</sect1>
- <sect1>
- <title>Memory management</title>
+ <!-- Internals: vertical blanking -->
+
+ <sect1 id="drm-vertical-blank">
+ <title>Vertical Blanking</title>
<para>
- The memory manager lies at the heart of many DRM operations; it
- is required to support advanced client features like OpenGL
- pbuffers. The DRM currently contains two memory managers: TTM
- and GEM.
+ Vertical blanking plays a major role in graphics rendering. To achieve
+ tear-free display, users must synchronize page flips and/or rendering to
+ vertical blanking. The DRM API offers ioctls to perform page flips
+ synchronized to vertical blanking and wait for vertical blanking.
</para>
+ <para>
+ The DRM core handles most of the vertical blanking management logic, which
+ involves filtering out spurious interrupts, keeping race-free blanking
+ counters, coping with counter wrap-around and resets and keeping use
+ counts. It relies on the driver to generate vertical blanking interrupts
+ and optionally provide a hardware vertical blanking counter. Drivers must
+ implement the following operations.
+ </para>
+ <itemizedlist>
+ <listitem>
+ <synopsis>int (*enable_vblank) (struct drm_device *dev, int crtc);
+void (*disable_vblank) (struct drm_device *dev, int crtc);</synopsis>
+ <para>
+ Enable or disable vertical blanking interrupts for the given CRTC.
+ </para>
+ </listitem>
+ <listitem>
+ <synopsis>u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);</synopsis>
+ <para>
+ Retrieve the value of the vertical blanking counter for the given
+ CRTC. If the hardware maintains a vertical blanking counter its value
+ should be returned. Otherwise drivers can use the
+ <function>drm_vblank_count</function> helper function to handle this
+ operation.
+ </para>
+ </listitem>
+ </itemizedlist>
+ <para>
+ Drivers must initialize the vertical blanking handling core with a call to
+ <function>drm_vblank_init</function> in their
+ <methodname>load</methodname> operation. The function will set the struct
+ <structname>drm_device</structname>
+ <structfield>vblank_disable_allowed</structfield> field to 0. This will
+ keep vertical blanking interrupts enabled permanently until the first mode
+ set operation, where <structfield>vblank_disable_allowed</structfield> is
+ set to 1. The reason behind this is not clear. Drivers can set the field
+ to 1 after <function>calling drm_vblank_init</function> to make vertical
+ blanking interrupts dynamically managed from the beginning.
+ </para>
+ <para>
+ Vertical blanking interrupts can be enabled by the DRM core or by drivers
+ themselves (for instance to handle page flipping operations). The DRM core
+ maintains a vertical blanking use count to ensure that the interrupts are
+ not disabled while a user still needs them. To increment the use count,
+ drivers call <function>drm_vblank_get</function>. Upon return vertical
+ blanking interrupts are guaranteed to be enabled.
+ </para>
+ <para>
+ To decrement the use count drivers call
+ <function>drm_vblank_put</function>. Only when the use count drops to zero
+ will the DRM core disable the vertical blanking interrupts after a delay
+ by scheduling a timer. The delay is accessible through the vblankoffdelay
+ module parameter or the <varname>drm_vblank_offdelay</varname> global
+ variable and expressed in milliseconds. Its default value is 5000 ms.
+ </para>
+ <para>
+ When a vertical blanking interrupt occurs drivers only need to call the
+ <function>drm_handle_vblank</function> function to account for the
+ interrupt.
+ </para>
+ <para>
+ Resources allocated by <function>drm_vblank_init</function> must be freed
+ with a call to <function>drm_vblank_cleanup</function> in the driver
+ <methodname>unload</methodname> operation handler.
+ </para>
+ </sect1>
+ <!-- Internals: open/close, file operations and ioctls -->
+
+ <sect1>
+ <title>Open/Close, File Operations and IOCTLs</title>
<sect2>
- <title>The Translation Table Manager (TTM)</title>
+ <title>Open and Close</title>
+ <synopsis>int (*firstopen) (struct drm_device *);
+void (*lastclose) (struct drm_device *);
+int (*open) (struct drm_device *, struct drm_file *);
+void (*preclose) (struct drm_device *, struct drm_file *);
+void (*postclose) (struct drm_device *, struct drm_file *);</synopsis>
+ <abstract>Open and close handlers. None of those methods are mandatory.
+ </abstract>
<para>
- TTM was developed by Tungsten Graphics, primarily by Thomas
- Hellström, and is intended to be a flexible, high performance
- graphics memory manager.
+ The <methodname>firstopen</methodname> method is called by the DRM core
+ when an application opens a device that has no other opened file handle.
+ Similarly the <methodname>lastclose</methodname> method is called when
+ the last application holding a file handle opened on the device closes
+ it. Both methods are mostly used for UMS (User Mode Setting) drivers to
+ acquire and release device resources which should be done in the
+ <methodname>load</methodname> and <methodname>unload</methodname>
+ methods for KMS drivers.
</para>
<para>
- Drivers wishing to support TTM must fill out a drm_bo_driver
- structure.
+ Note that the <methodname>lastclose</methodname> method is also called
+ at module unload time or, for hot-pluggable devices, when the device is
+ unplugged. The <methodname>firstopen</methodname> and
+ <methodname>lastclose</methodname> calls can thus be unbalanced.
</para>
<para>
- TTM design background and information belongs here.
+ The <methodname>open</methodname> method is called every time the device
+ is opened by an application. Drivers can allocate per-file private data
+ in this method and store them in the struct
+ <structname>drm_file</structname> <structfield>driver_priv</structfield>
+ field. Note that the <methodname>open</methodname> method is called
+ before <methodname>firstopen</methodname>.
+ </para>
+ <para>
+ The close operation is split into <methodname>preclose</methodname> and
+ <methodname>postclose</methodname> methods. Drivers must stop and
+ cleanup all per-file operations in the <methodname>preclose</methodname>
+ method. For instance pending vertical blanking and page flip events must
+ be cancelled. No per-file operation is allowed on the file handle after
+ returning from the <methodname>preclose</methodname> method.
+ </para>
+ <para>
+ Finally the <methodname>postclose</methodname> method is called as the
+ last step of the close operation, right before calling the
+ <methodname>lastclose</methodname> method if no other open file handle
+ exists for the device. Drivers that have allocated per-file private data
+ in the <methodname>open</methodname> method should free it here.
+ </para>
+ <para>
+ The <methodname>lastclose</methodname> method should restore CRTC and
+ plane properties to default value, so that a subsequent open of the
+ device will not inherit state from the previous user.
</para>
</sect2>
-
<sect2>
- <title>The Graphics Execution Manager (GEM)</title>
+ <title>File Operations</title>
+ <synopsis>const struct file_operations *fops</synopsis>
+ <abstract>File operations for the DRM device node.</abstract>
<para>
- GEM is an Intel project, authored by Eric Anholt and Keith
- Packard. It provides simpler interfaces than TTM, and is well
- suited for UMA devices.
+ Drivers must define the file operations structure that forms the DRM
+ userspace API entry point, even though most of those operations are
+ implemented in the DRM core. The <methodname>open</methodname>,
+ <methodname>release</methodname> and <methodname>ioctl</methodname>
+ operations are handled by
+ <programlisting>
+ .owner = THIS_MODULE,
+ .open = drm_open,
+ .release = drm_release,
+ .unlocked_ioctl = drm_ioctl,
+ #ifdef CONFIG_COMPAT
+ .compat_ioctl = drm_compat_ioctl,
+ #endif
+ </programlisting>
</para>
<para>
- GEM-enabled drivers must provide gem_init_object() and
- gem_free_object() callbacks to support the core memory
- allocation routines. They should also provide several driver-specific
- ioctls to support command execution, pinning, buffer
- read &amp; write, mapping, and domain ownership transfers.
+ Drivers that implement private ioctls that requires 32/64bit
+ compatibility support must provide their own
+ <methodname>compat_ioctl</methodname> handler that processes private
+ ioctls and calls <function>drm_compat_ioctl</function> for core ioctls.
</para>
<para>
- On a fundamental level, GEM involves several operations:
- <itemizedlist>
- <listitem>Memory allocation and freeing</listitem>
- <listitem>Command execution</listitem>
- <listitem>Aperture management at command execution time</listitem>
- </itemizedlist>
- Buffer object allocation is relatively
- straightforward and largely provided by Linux's shmem layer, which
- provides memory to back each object. When mapped into the GTT
- or used in a command buffer, the backing pages for an object are
- flushed to memory and marked write combined so as to be coherent
- with the GPU. Likewise, if the CPU accesses an object after the GPU
- has finished rendering to the object, then the object must be made
- coherent with the CPU's view
- of memory, usually involving GPU cache flushing of various kinds.
- This core CPU&lt;-&gt;GPU coherency management is provided by a
- device-specific ioctl, which evaluates an object's current domain and
- performs any necessary flushing or synchronization to put the object
- into the desired coherency domain (note that the object may be busy,
- i.e. an active render target; in that case, setting the domain
- blocks the client and waits for rendering to complete before
- performing any necessary flushing operations).
- </para>
- <para>
- Perhaps the most important GEM function is providing a command
- execution interface to clients. Client programs construct command
- buffers containing references to previously allocated memory objects,
- and then submit them to GEM. At that point, GEM takes care to bind
- all the objects into the GTT, execute the buffer, and provide
- necessary synchronization between clients accessing the same buffers.
- This often involves evicting some objects from the GTT and re-binding
- others (a fairly expensive operation), and providing relocation
- support which hides fixed GTT offsets from clients. Clients must
- take care not to submit command buffers that reference more objects
- than can fit in the GTT; otherwise, GEM will reject them and no rendering
- will occur. Similarly, if several objects in the buffer require
- fence registers to be allocated for correct rendering (e.g. 2D blits
- on pre-965 chips), care must be taken not to require more fence
- registers than are available to the client. Such resource management
- should be abstracted from the client in libdrm.
+ The <methodname>read</methodname> and <methodname>poll</methodname>
+ operations provide support for reading DRM events and polling them. They
+ are implemented by
+ <programlisting>
+ .poll = drm_poll,
+ .read = drm_read,
+ .fasync = drm_fasync,
+ .llseek = no_llseek,
+ </programlisting>
+ </para>
+ <para>
+ The memory mapping implementation varies depending on how the driver
+ manages memory. Pre-GEM drivers will use <function>drm_mmap</function>,
+ while GEM-aware drivers will use <function>drm_gem_mmap</function>. See
+ <xref linkend="drm-gem"/>.
+ <programlisting>
+ .mmap = drm_gem_mmap,
+ </programlisting>
+ </para>
+ <para>
+ No other file operation is supported by the DRM API.
+ </para>
+ </sect2>
+ <sect2>
+ <title>IOCTLs</title>
+ <synopsis>struct drm_ioctl_desc *ioctls;
+int num_ioctls;</synopsis>
+ <abstract>Driver-specific ioctls descriptors table.</abstract>
+ <para>
+ Driver-specific ioctls numbers start at DRM_COMMAND_BASE. The ioctls
+ descriptors table is indexed by the ioctl number offset from the base
+ value. Drivers can use the DRM_IOCTL_DEF_DRV() macro to initialize the
+ table entries.
+ </para>
+ <para>
+ <programlisting>DRM_IOCTL_DEF_DRV(ioctl, func, flags)</programlisting>
+ <para>
+ <parameter>ioctl</parameter> is the ioctl name. Drivers must define
+ the DRM_##ioctl and DRM_IOCTL_##ioctl macros to the ioctl number
+ offset from DRM_COMMAND_BASE and the ioctl number respectively. The
+ first macro is private to the device while the second must be exposed
+ to userspace in a public header.
+ </para>
+ <para>
+ <parameter>func</parameter> is a pointer to the ioctl handler function
+ compatible with the <type>drm_ioctl_t</type> type.
+ <programlisting>typedef int drm_ioctl_t(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);</programlisting>
+ </para>
+ <para>
+ <parameter>flags</parameter> is a bitmask combination of the following
+ values. It restricts how the ioctl is allowed to be called.
+ <itemizedlist>
+ <listitem><para>
+ DRM_AUTH - Only authenticated callers allowed
+ </para></listitem>
+ <listitem><para>
+ DRM_MASTER - The ioctl can only be called on the master file
+ handle
+ </para></listitem>
+ <listitem><para>
+ DRM_ROOT_ONLY - Only callers with the SYSADMIN capability allowed
+ </para></listitem>
+ <listitem><para>
+ DRM_CONTROL_ALLOW - The ioctl can only be called on a control
+ device
+ </para></listitem>
+ <listitem><para>
+ DRM_UNLOCKED - The ioctl handler will be called without locking
+ the DRM global mutex
+ </para></listitem>
+ </itemizedlist>
+ </para>
</para>
</sect2>
-
- </sect1>
-
- <!-- Output management -->
- <sect1>
- <title>Output management</title>
- <para>
- At the core of the DRM output management code is a set of
- structures representing CRTCs, encoders, and connectors.
- </para>
- <para>
- A CRTC is an abstraction representing a part of the chip that
- contains a pointer to a scanout buffer. Therefore, the number
- of CRTCs available determines how many independent scanout
- buffers can be active at any given time. The CRTC structure
- contains several fields to support this: a pointer to some video
- memory, a display mode, and an (x, y) offset into the video
- memory to support panning or configurations where one piece of
- video memory spans multiple CRTCs.
- </para>
- <para>
- An encoder takes pixel data from a CRTC and converts it to a
- format suitable for any attached connectors. On some devices,
- it may be possible to have a CRTC send data to more than one
- encoder. In that case, both encoders would receive data from
- the same scanout buffer, resulting in a "cloned" display
- configuration across the connectors attached to each encoder.
- </para>
- <para>
- A connector is the final destination for pixel data on a device,
- and usually connects directly to an external display device like
- a monitor or laptop panel. A connector can only be attached to
- one encoder at a time. The connector is also the structure
- where information about the attached display is kept, so it
- contains fields for display data, EDID data, DPMS &amp;
- connection status, and information about modes supported on the
- attached displays.
- </para>
-<!--!Edrivers/char/drm/drm_crtc.c-->
- </sect1>
-
- <sect1>
- <title>Framebuffer management</title>
- <para>
- Clients need to provide a framebuffer object which provides a source
- of pixels for a CRTC to deliver to the encoder(s) and ultimately the
- connector(s). A framebuffer is fundamentally a driver-specific memory
- object, made into an opaque handle by the DRM's addfb() function.
- Once a framebuffer has been created this way, it may be passed to the
- KMS mode setting routines for use in a completed configuration.
- </para>
</sect1>
<sect1>
@@ -812,15 +2360,24 @@ void intel_crt_init(struct drm_device *dev)
</para>
</sect1>
+ <!-- Internals: suspend/resume -->
+
<sect1>
- <title>Suspend/resume</title>
+ <title>Suspend/Resume</title>
+ <para>
+ The DRM core provides some suspend/resume code, but drivers wanting full
+ suspend/resume support should provide save() and restore() functions.
+ These are called at suspend, hibernate, or resume time, and should perform
+ any state save or restore required by your device across suspend or
+ hibernate states.
+ </para>
+ <synopsis>int (*suspend) (struct drm_device *, pm_message_t state);
+int (*resume) (struct drm_device *);</synopsis>
<para>
- The DRM core provides some suspend/resume code, but drivers
- wanting full suspend/resume support should provide save() and
- restore() functions. These are called at suspend,
- hibernate, or resume time, and should perform any state save or
- restore required by your device across suspend or hibernate
- states.
+ Those are legacy suspend and resume methods. New driver should use the
+ power management interface provided by their bus type (usually through
+ the struct <structname>device_driver</structname> dev_pm_ops) and set
+ these methods to NULL.
</para>
</sect1>
@@ -833,6 +2390,35 @@ void intel_crt_init(struct drm_device *dev)
</sect1>
</chapter>
+<!-- TODO
+
+- Add a glossary
+- Document the struct_mutex catch-all lock
+- Document connector properties
+
+- Why is the load method optional?
+- What are drivers supposed to set the initial display state to, and how?
+ Connector's DPMS states are not initialized and are thus equal to
+ DRM_MODE_DPMS_ON. The fbcon compatibility layer calls
+ drm_helper_disable_unused_functions(), which disables unused encoders and
+ CRTCs, but doesn't touch the connectors' DPMS state, and
+ drm_helper_connector_dpms() in reaction to fbdev blanking events. Do drivers
+ that don't implement (or just don't use) fbcon compatibility need to call
+ those functions themselves?
+- KMS drivers must call drm_vblank_pre_modeset() and drm_vblank_post_modeset()
+ around mode setting. Should this be done in the DRM core?
+- vblank_disable_allowed is set to 1 in the first drm_vblank_post_modeset()
+ call and never set back to 0. It seems to be safe to permanently set it to 1
+ in drm_vblank_init() for KMS driver, and it might be safe for UMS drivers as
+ well. This should be investigated.
+- crtc and connector .save and .restore operations are only used internally in
+ drivers, should they be removed from the core?
+- encoder mid-layer .save and .restore operations are only used internally in
+ drivers, should they be removed from the core?
+- encoder mid-layer .detect operation is only used internally in drivers,
+ should it be removed from the core?
+-->
+
<!-- External interfaces -->
<chapter id="drmExternals">
@@ -853,6 +2439,42 @@ void intel_crt_init(struct drm_device *dev)
Cover generic ioctls and sysfs layout here. We only need high-level
info, since man pages should cover the rest.
</para>
+
+ <!-- External: vblank handling -->
+
+ <sect1>
+ <title>VBlank event handling</title>
+ <para>
+ The DRM core exposes two vertical blank related ioctls:
+ <variablelist>
+ <varlistentry>
+ <term>DRM_IOCTL_WAIT_VBLANK</term>
+ <listitem>
+ <para>
+ This takes a struct drm_wait_vblank structure as its argument,
+ and it is used to block or request a signal when a specified
+ vblank event occurs.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>DRM_IOCTL_MODESET_CTL</term>
+ <listitem>
+ <para>
+ This should be called by application level drivers before and
+ after mode setting, since on many devices the vertical blank
+ counter is reset at that time. Internally, the DRM snapshots
+ the last vblank count when the ioctl is called with the
+ _DRM_PRE_MODESET command, so that the counter won't go backwards
+ (which is dealt with when _DRM_POST_MODESET is used).
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+<!--!Edrivers/char/drm/drm_irq.c-->
+ </para>
+ </sect1>
+
</chapter>
<!-- API reference -->
diff --git a/Documentation/DocBook/filesystems.tmpl b/Documentation/DocBook/filesystems.tmpl
index 3fca32c4192..25b58efd955 100644
--- a/Documentation/DocBook/filesystems.tmpl
+++ b/Documentation/DocBook/filesystems.tmpl
@@ -224,8 +224,8 @@ all your transactions.
</para>
<para>
-Then at umount time , in your put_super() (2.4) or write_super() (2.5)
-you can then call journal_destroy() to clean up your in-core journal object.
+Then at umount time , in your put_super() you can then call journal_destroy()
+to clean up your in-core journal object.
</para>
<para>
diff --git a/Documentation/DocBook/gadget.tmpl b/Documentation/DocBook/gadget.tmpl
index 6ef2f0073e5..4017f147ba2 100644
--- a/Documentation/DocBook/gadget.tmpl
+++ b/Documentation/DocBook/gadget.tmpl
@@ -671,7 +671,7 @@ than a kernel driver.
<para>There's a USB Mass Storage class driver, which provides
a different solution for interoperability with systems such
as MS-Windows and MacOS.
-That <emphasis>File-backed Storage</emphasis> driver uses a
+That <emphasis>Mass Storage</emphasis> driver uses a
file or block device as backing store for a drive,
like the <filename>loop</filename> driver.
The USB host uses the BBB, CB, or CBI versions of the mass
diff --git a/Documentation/DocBook/kernel-api.tmpl b/Documentation/DocBook/kernel-api.tmpl
index 00687ee9d36..f75ab4c1b28 100644
--- a/Documentation/DocBook/kernel-api.tmpl
+++ b/Documentation/DocBook/kernel-api.tmpl
@@ -58,6 +58,9 @@
<sect1><title>String Conversions</title>
!Elib/vsprintf.c
+!Finclude/linux/kernel.h kstrtol
+!Finclude/linux/kernel.h kstrtoul
+!Elib/kstrtox.c
</sect1>
<sect1><title>String Manipulation</title>
<!-- All functions are exported at now
diff --git a/Documentation/DocBook/media/Makefile b/Documentation/DocBook/media/Makefile
index 362520992ce..f9fd615427f 100644
--- a/Documentation/DocBook/media/Makefile
+++ b/Documentation/DocBook/media/Makefile
@@ -56,15 +56,15 @@ FUNCS = \
write \
IOCTLS = \
- $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/videodev2.h) \
- $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/dvb/audio.h) \
- $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/dvb/ca.h) \
- $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/dvb/dmx.h) \
- $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/dvb/frontend.h) \
- $(shell perl -ne 'print "$$1 " if /\#define\s+([A-Z][^\s]+)\s+_IO/' $(srctree)/include/linux/dvb/net.h) \
- $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/dvb/video.h) \
- $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/media.h) \
- $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/v4l2-subdev.h) \
+ $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/videodev2.h) \
+ $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/dvb/audio.h) \
+ $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/dvb/ca.h) \
+ $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/dvb/dmx.h) \
+ $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/dvb/frontend.h) \
+ $(shell perl -ne 'print "$$1 " if /\#define\s+([A-Z][^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/dvb/net.h) \
+ $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/dvb/video.h) \
+ $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/media.h) \
+ $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/v4l2-subdev.h) \
VIDIOC_SUBDEV_G_FRAME_INTERVAL \
VIDIOC_SUBDEV_S_FRAME_INTERVAL \
VIDIOC_SUBDEV_ENUM_MBUS_CODE \
@@ -74,32 +74,32 @@ IOCTLS = \
VIDIOC_SUBDEV_S_SELECTION \
TYPES = \
- $(shell perl -ne 'print "$$1 " if /^typedef\s+[^\s]+\s+([^\s]+)\;/' $(srctree)/include/linux/videodev2.h) \
- $(shell perl -ne 'print "$$1 " if /^}\s+([a-z0-9_]+_t)/' $(srctree)/include/linux/dvb/frontend.h)
+ $(shell perl -ne 'print "$$1 " if /^typedef\s+[^\s]+\s+([^\s]+)\;/' $(srctree)/include/uapi/linux/videodev2.h) \
+ $(shell perl -ne 'print "$$1 " if /^}\s+([a-z0-9_]+_t)/' $(srctree)/include/uapi/linux/dvb/frontend.h)
ENUMS = \
- $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/videodev2.h) \
- $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/dvb/audio.h) \
- $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/dvb/ca.h) \
- $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/dvb/dmx.h) \
- $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/dvb/frontend.h) \
- $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/dvb/net.h) \
- $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/dvb/video.h) \
- $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/media.h) \
- $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/v4l2-mediabus.h) \
- $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/linux/v4l2-subdev.h)
+ $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/videodev2.h) \
+ $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/dvb/audio.h) \
+ $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/dvb/ca.h) \
+ $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/dvb/dmx.h) \
+ $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/dvb/frontend.h) \
+ $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/dvb/net.h) \
+ $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/dvb/video.h) \
+ $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/media.h) \
+ $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/v4l2-mediabus.h) \
+ $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/v4l2-subdev.h)
STRUCTS = \
- $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/linux/videodev2.h) \
- $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s\{]+)\s*/)' $(srctree)/include/linux/dvb/audio.h) \
- $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s]+)\s+/)' $(srctree)/include/linux/dvb/ca.h) \
- $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s]+)\s+/)' $(srctree)/include/linux/dvb/dmx.h) \
- $(shell perl -ne 'print "$$1 " if (!/dtv\_cmds\_h/ && /^struct\s+([^\s]+)\s+/)' $(srctree)/include/linux/dvb/frontend.h) \
- $(shell perl -ne 'print "$$1 " if (/^struct\s+([A-Z][^\s]+)\s+/)' $(srctree)/include/linux/dvb/net.h) \
- $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s]+)\s+/)' $(srctree)/include/linux/dvb/video.h) \
- $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/linux/media.h) \
- $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/linux/v4l2-subdev.h) \
- $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/linux/v4l2-mediabus.h)
+ $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/videodev2.h) \
+ $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s\{]+)\s*/)' $(srctree)/include/uapi/linux/dvb/audio.h) \
+ $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s]+)\s+/)' $(srctree)/include/uapi/linux/dvb/ca.h) \
+ $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s]+)\s+/)' $(srctree)/include/uapi/linux/dvb/dmx.h) \
+ $(shell perl -ne 'print "$$1 " if (!/dtv\_cmds\_h/ && /^struct\s+([^\s]+)\s+/)' $(srctree)/include/uapi/linux/dvb/frontend.h) \
+ $(shell perl -ne 'print "$$1 " if (/^struct\s+([A-Z][^\s]+)\s+/)' $(srctree)/include/uapi/linux/dvb/net.h) \
+ $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s]+)\s+/)' $(srctree)/include/uapi/linux/dvb/video.h) \
+ $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/media.h) \
+ $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/v4l2-subdev.h) \
+ $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/v4l2-mediabus.h)
ERRORS = \
E2BIG \
@@ -205,7 +205,7 @@ $(MEDIA_OBJ_DIR)/v4l2.xml: $(OBJIMGFILES)
@(ln -sf $(MEDIA_SRC_DIR)/v4l/*xml $(MEDIA_OBJ_DIR)/)
@(ln -sf $(MEDIA_SRC_DIR)/dvb/*xml $(MEDIA_OBJ_DIR)/)
-$(MEDIA_OBJ_DIR)/videodev2.h.xml: $(srctree)/include/linux/videodev2.h $(MEDIA_OBJ_DIR)/v4l2.xml
+$(MEDIA_OBJ_DIR)/videodev2.h.xml: $(srctree)/include/uapi/linux/videodev2.h $(MEDIA_OBJ_DIR)/v4l2.xml
@$($(quiet)gen_xml)
@( \
echo "<programlisting>") > $@
@@ -216,7 +216,7 @@ $(MEDIA_OBJ_DIR)/videodev2.h.xml: $(srctree)/include/linux/videodev2.h $(MEDIA_O
@( \
echo "</programlisting>") >> $@
-$(MEDIA_OBJ_DIR)/audio.h.xml: $(srctree)/include/linux/dvb/audio.h $(MEDIA_OBJ_DIR)/v4l2.xml
+$(MEDIA_OBJ_DIR)/audio.h.xml: $(srctree)/include/uapi/linux/dvb/audio.h $(MEDIA_OBJ_DIR)/v4l2.xml
@$($(quiet)gen_xml)
@( \
echo "<programlisting>") > $@
@@ -227,7 +227,7 @@ $(MEDIA_OBJ_DIR)/audio.h.xml: $(srctree)/include/linux/dvb/audio.h $(MEDIA_OBJ_D
@( \
echo "</programlisting>") >> $@
-$(MEDIA_OBJ_DIR)/ca.h.xml: $(srctree)/include/linux/dvb/ca.h $(MEDIA_OBJ_DIR)/v4l2.xml
+$(MEDIA_OBJ_DIR)/ca.h.xml: $(srctree)/include/uapi/linux/dvb/ca.h $(MEDIA_OBJ_DIR)/v4l2.xml
@$($(quiet)gen_xml)
@( \
echo "<programlisting>") > $@
@@ -238,7 +238,7 @@ $(MEDIA_OBJ_DIR)/ca.h.xml: $(srctree)/include/linux/dvb/ca.h $(MEDIA_OBJ_DIR)/v4
@( \
echo "</programlisting>") >> $@
-$(MEDIA_OBJ_DIR)/dmx.h.xml: $(srctree)/include/linux/dvb/dmx.h $(MEDIA_OBJ_DIR)/v4l2.xml
+$(MEDIA_OBJ_DIR)/dmx.h.xml: $(srctree)/include/uapi/linux/dvb/dmx.h $(MEDIA_OBJ_DIR)/v4l2.xml
@$($(quiet)gen_xml)
@( \
echo "<programlisting>") > $@
@@ -249,7 +249,7 @@ $(MEDIA_OBJ_DIR)/dmx.h.xml: $(srctree)/include/linux/dvb/dmx.h $(MEDIA_OBJ_DIR)/
@( \
echo "</programlisting>") >> $@
-$(MEDIA_OBJ_DIR)/frontend.h.xml: $(srctree)/include/linux/dvb/frontend.h $(MEDIA_OBJ_DIR)/v4l2.xml
+$(MEDIA_OBJ_DIR)/frontend.h.xml: $(srctree)/include/uapi/linux/dvb/frontend.h $(MEDIA_OBJ_DIR)/v4l2.xml
@$($(quiet)gen_xml)
@( \
echo "<programlisting>") > $@
@@ -260,7 +260,7 @@ $(MEDIA_OBJ_DIR)/frontend.h.xml: $(srctree)/include/linux/dvb/frontend.h $(MEDIA
@( \
echo "</programlisting>") >> $@
-$(MEDIA_OBJ_DIR)/net.h.xml: $(srctree)/include/linux/dvb/net.h $(MEDIA_OBJ_DIR)/v4l2.xml
+$(MEDIA_OBJ_DIR)/net.h.xml: $(srctree)/include/uapi/linux/dvb/net.h $(MEDIA_OBJ_DIR)/v4l2.xml
@$($(quiet)gen_xml)
@( \
echo "<programlisting>") > $@
@@ -271,7 +271,7 @@ $(MEDIA_OBJ_DIR)/net.h.xml: $(srctree)/include/linux/dvb/net.h $(MEDIA_OBJ_DIR)/
@( \
echo "</programlisting>") >> $@
-$(MEDIA_OBJ_DIR)/video.h.xml: $(srctree)/include/linux/dvb/video.h $(MEDIA_OBJ_DIR)/v4l2.xml
+$(MEDIA_OBJ_DIR)/video.h.xml: $(srctree)/include/uapi/linux/dvb/video.h $(MEDIA_OBJ_DIR)/v4l2.xml
@$($(quiet)gen_xml)
@( \
echo "<programlisting>") > $@
@@ -300,7 +300,7 @@ $(MEDIA_OBJ_DIR)/media-entities.tmpl: $(MEDIA_OBJ_DIR)/v4l2.xml
@( \
for ident in $(IOCTLS) ; do \
entity=`echo $$ident | tr _ -` ; \
- id=`grep "<refname>$$ident" $(MEDIA_OBJ_DIR)/vidioc-*.xml | sed -r s,"^.*/(.*).xml.*","\1",` ; \
+ id=`grep "<refname>$$ident" $(MEDIA_OBJ_DIR)/vidioc-*.xml $(MEDIA_OBJ_DIR)/media-ioc-*.xml | sed -r s,"^.*/(.*).xml.*","\1",` ; \
echo "<!ENTITY $$entity \"<link" \
"linkend='$$id'><constant>$$ident</constant></link>\">" \
>>$@ ; \
diff --git a/Documentation/DocBook/media/dvb/audio.xml b/Documentation/DocBook/media/dvb/audio.xml
index d6438623720..a7ea56c71a2 100644
--- a/Documentation/DocBook/media/dvb/audio.xml
+++ b/Documentation/DocBook/media/dvb/audio.xml
@@ -1,12 +1,16 @@
<title>DVB Audio Device</title>
<para>The DVB audio device controls the MPEG2 audio decoder of the DVB hardware. It
can be accessed through <emphasis role="tt">/dev/dvb/adapter0/audio0</emphasis>. Data types and and
-ioctl definitions can be accessed by including <emphasis role="tt">linux/dvb/video.h</emphasis> in your
+ioctl definitions can be accessed by including <emphasis role="tt">linux/dvb/audio.h</emphasis> in your
application.
</para>
<para>Please note that some DVB cards don&#8217;t have their own MPEG decoder, which results in
the omission of the audio and video device.
</para>
+<para>
+These ioctls were also used by V4L2 to control MPEG decoders implemented in V4L2. The use
+of these ioctls for that purpose has been made obsolete and proper V4L2 ioctls or controls
+have been created to replace that functionality.</para>
<section id="audio_data_types">
<title>Audio Data Types</title>
@@ -558,6 +562,8 @@ role="subsection"><title>AUDIO_SELECT_SOURCE</title>
role="subsection"><title>AUDIO_SET_MUTE</title>
<para>DESCRIPTION
</para>
+<para>This ioctl is for DVB devices only. To control a V4L2 decoder use the V4L2
+&VIDIOC-DECODER-CMD; with the <constant>V4L2_DEC_CMD_START_MUTE_AUDIO</constant> flag instead.</para>
<informaltable><tgroup cols="1"><tbody><row><entry
align="char">
<para>This ioctl call asks the audio device to mute the stream that is currently being
@@ -730,6 +736,8 @@ role="subsection"><title>AUDIO_SET_BYPASS_MODE</title>
role="subsection"><title>AUDIO_CHANNEL_SELECT</title>
<para>DESCRIPTION
</para>
+<para>This ioctl is for DVB devices only. To control a V4L2 decoder use the V4L2
+<constant>V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK</constant> control instead.</para>
<informaltable><tgroup cols="1"><tbody><row><entry
align="char">
<para>This ioctl call asks the Audio Device to select the requested channel if possible.</para>
@@ -772,6 +780,109 @@ role="subsection"><title>AUDIO_CHANNEL_SELECT</title>
</row></tbody></tgroup></informaltable>
&return-value-dvb;
+</section><section id="AUDIO_BILINGUAL_CHANNEL_SELECT"
+role="subsection"><title>AUDIO_BILINGUAL_CHANNEL_SELECT</title>
+<para>DESCRIPTION
+</para>
+<para>This ioctl is obsolete. Do not use in new drivers. It has been replaced by
+the V4L2 <constant>V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK</constant> control
+for MPEG decoders controlled through V4L2.</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call asks the Audio Device to select the requested channel for bilingual streams if possible.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request =
+ AUDIO_BILINGUAL_CHANNEL_SELECT, audio_channel_select_t);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals AUDIO_BILINGUAL_CHANNEL_SELECT for this
+ command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>audio_channel_select_t
+ch</para>
+</entry><entry
+ align="char">
+<para>Select the output format of the audio (mono left/right,
+ stereo).</para>
+</entry>
+ </row>
+</tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="AUDIO_GET_PTS"
+role="subsection"><title>AUDIO_GET_PTS</title>
+<para>DESCRIPTION
+</para>
+<para>This ioctl is obsolete. Do not use in new drivers. If you need this functionality,
+then please contact the linux-media mailing list (&v4l-ml;).</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call asks the Audio Device to return the current PTS timestamp.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request =
+ AUDIO_GET_PTS, __u64 *pts);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals AUDIO_GET_PTS for this
+ command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>__u64 *pts
+</para>
+</entry><entry
+ align="char">
+<para>Returns the 33-bit timestamp as defined in ITU T-REC-H.222.0 / ISO/IEC 13818-1.
+</para>
+<para>
+The PTS should belong to the currently played
+frame if possible, but may also be a value close to it
+like the PTS of the last decoded frame or the last PTS
+extracted by the PES parser.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
</section><section id="AUDIO_GET_STATUS"
role="subsection"><title>AUDIO_GET_STATUS</title>
<para>DESCRIPTION
diff --git a/Documentation/DocBook/media/dvb/ca.xml b/Documentation/DocBook/media/dvb/ca.xml
index 5c4adb44b1c..85eaf4fe293 100644
--- a/Documentation/DocBook/media/dvb/ca.xml
+++ b/Documentation/DocBook/media/dvb/ca.xml
@@ -226,4 +226,357 @@ typedef struct ca_pid {
</entry>
</row></tbody></tgroup></informaltable>
</section>
+
+<section id="CA_RESET"
+role="subsection"><title>CA_RESET</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl is undocumented. Documentation is welcome.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = CA_RESET);
+</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals CA_RESET for this command.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+</section>
+
+<section id="CA_GET_CAP"
+role="subsection"><title>CA_GET_CAP</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl is undocumented. Documentation is welcome.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = CA_GET_CAP,
+ ca_caps_t *);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals CA_GET_CAP for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>ca_caps_t *
+</para>
+</entry><entry
+ align="char">
+<para>Undocumented.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+</section>
+
+<section id="CA_GET_SLOT_INFO"
+role="subsection"><title>CA_GET_SLOT_INFO</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl is undocumented. Documentation is welcome.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = CA_GET_SLOT_INFO,
+ ca_slot_info_t *);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals CA_GET_SLOT_INFO for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>ca_slot_info_t *
+</para>
+</entry><entry
+ align="char">
+<para>Undocumented.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+</section>
+
+<section id="CA_GET_DESCR_INFO"
+role="subsection"><title>CA_GET_DESCR_INFO</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl is undocumented. Documentation is welcome.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = CA_GET_DESCR_INFO,
+ ca_descr_info_t *);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals CA_GET_DESCR_INFO for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>ca_descr_info_t *
+</para>
+</entry><entry
+ align="char">
+<para>Undocumented.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+</section>
+
+<section id="CA_GET_MSG"
+role="subsection"><title>CA_GET_MSG</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl is undocumented. Documentation is welcome.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = CA_GET_MSG,
+ ca_msg_t *);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals CA_GET_MSG for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>ca_msg_t *
+</para>
+</entry><entry
+ align="char">
+<para>Undocumented.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+</section>
+
+<section id="CA_SEND_MSG"
+role="subsection"><title>CA_SEND_MSG</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl is undocumented. Documentation is welcome.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = CA_SEND_MSG,
+ ca_msg_t *);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals CA_SEND_MSG for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>ca_msg_t *
+</para>
+</entry><entry
+ align="char">
+<para>Undocumented.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+</section>
+
+<section id="CA_SET_DESCR"
+role="subsection"><title>CA_SET_DESCR</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl is undocumented. Documentation is welcome.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = CA_SET_DESCR,
+ ca_descr_t *);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals CA_SET_DESCR for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>ca_descr_t *
+</para>
+</entry><entry
+ align="char">
+<para>Undocumented.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+</section>
+
+<section id="CA_SET_PID"
+role="subsection"><title>CA_SET_PID</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl is undocumented. Documentation is welcome.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = CA_SET_PID,
+ ca_pid_t *);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals CA_SET_PID for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>ca_pid_t *
+</para>
+</entry><entry
+ align="char">
+<para>Undocumented.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+</section>
+
</section>
diff --git a/Documentation/DocBook/media/dvb/demux.xml b/Documentation/DocBook/media/dvb/demux.xml
index 37c17908aa4..86de89cfbd6 100644
--- a/Documentation/DocBook/media/dvb/demux.xml
+++ b/Documentation/DocBook/media/dvb/demux.xml
@@ -899,4 +899,232 @@ typedef enum {
<para>Invalid stc number.</para>
</entry>
</row></tbody></tgroup></informaltable>
- </section></section>
+ </section>
+
+<section id="DMX_GET_PES_PIDS"
+role="subsection"><title>DMX_GET_PES_PIDS</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl is undocumented. Documentation is welcome.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = DMX_GET_PES_PIDS,
+ __u16[5]);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals DMX_GET_PES_PIDS for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>__u16[5]
+</para>
+</entry><entry
+ align="char">
+<para>Undocumented.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+</section>
+
+<section id="DMX_GET_CAPS"
+role="subsection"><title>DMX_GET_CAPS</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl is undocumented. Documentation is welcome.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = DMX_GET_CAPS,
+ dmx_caps_t *);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals DMX_GET_CAPS for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>dmx_caps_t *
+</para>
+</entry><entry
+ align="char">
+<para>Undocumented.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+</section>
+
+<section id="DMX_SET_SOURCE"
+role="subsection"><title>DMX_SET_SOURCE</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl is undocumented. Documentation is welcome.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = DMX_SET_SOURCE,
+ dmx_source_t *);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals DMX_SET_SOURCE for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>dmx_source_t *
+</para>
+</entry><entry
+ align="char">
+<para>Undocumented.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+</section>
+
+<section id="DMX_ADD_PID"
+role="subsection"><title>DMX_ADD_PID</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl is undocumented. Documentation is welcome.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = DMX_ADD_PID,
+ __u16 *);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals DMX_ADD_PID for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>__u16 *
+</para>
+</entry><entry
+ align="char">
+<para>Undocumented.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+</section>
+
+<section id="DMX_REMOVE_PID"
+role="subsection"><title>DMX_REMOVE_PID</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl is undocumented. Documentation is welcome.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = DMX_REMOVE_PID,
+ __u16 *);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals DMX_REMOVE_PID for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>__u16 *
+</para>
+</entry><entry
+ align="char">
+<para>Undocumented.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+</section>
+
+
+</section>
diff --git a/Documentation/DocBook/media/dvb/dvbapi.xml b/Documentation/DocBook/media/dvb/dvbapi.xml
index 2ab6ddcfc4e..757488b24f4 100644
--- a/Documentation/DocBook/media/dvb/dvbapi.xml
+++ b/Documentation/DocBook/media/dvb/dvbapi.xml
@@ -28,7 +28,7 @@
<holder>Convergence GmbH</holder>
</copyright>
<copyright>
- <year>2009-2011</year>
+ <year>2009-2012</year>
<holder>Mauro Carvalho Chehab</holder>
</copyright>
@@ -84,7 +84,7 @@ Added ISDB-T test originally written by Patrick Boettcher
<title>LINUX DVB API</title>
-<subtitle>Version 5.2</subtitle>
+<subtitle>Version 5.8</subtitle>
<!-- ADD THE CHAPTERS HERE -->
<chapter id="dvb_introdution">
&sub-intro;
diff --git a/Documentation/DocBook/media/dvb/dvbproperty.xml b/Documentation/DocBook/media/dvb/dvbproperty.xml
index e633c097a8d..957e3acaae8 100644
--- a/Documentation/DocBook/media/dvb/dvbproperty.xml
+++ b/Documentation/DocBook/media/dvb/dvbproperty.xml
@@ -194,6 +194,7 @@ get/set up to 64 properties. The actual meaning of each property is described on
APSK_16,
APSK_32,
DQPSK,
+ QAM_4_NR,
} fe_modulation_t;
</programlisting>
</section>
@@ -265,6 +266,7 @@ typedef enum fe_code_rate {
FEC_AUTO,
FEC_3_5,
FEC_9_10,
+ FEC_2_5,
} fe_code_rate_t;
</programlisting>
<para>which correspond to error correction rates of 1/2, 2/3, etc.,
@@ -351,7 +353,7 @@ typedef enum fe_delivery_system {
SYS_ISDBC,
SYS_ATSC,
SYS_ATSCMH,
- SYS_DMBTH,
+ SYS_DTMB,
SYS_CMMB,
SYS_DAB,
SYS_DVBT2,
@@ -567,28 +569,33 @@ typedef enum fe_delivery_system {
<title><constant>DTV_ATSCMH_RS_FRAME_MODE</constant></title>
<para>RS frame mode.</para>
<para>Possible values are:</para>
+ <para id="atscmh-rs-frame-mode">
<programlisting>
typedef enum atscmh_rs_frame_mode {
ATSCMH_RSFRAME_PRI_ONLY = 0,
ATSCMH_RSFRAME_PRI_SEC = 1,
} atscmh_rs_frame_mode_t;
</programlisting>
+ </para>
</section>
<section id="DTV-ATSCMH-RS-FRAME-ENSEMBLE">
<title><constant>DTV_ATSCMH_RS_FRAME_ENSEMBLE</constant></title>
<para>RS frame ensemble.</para>
<para>Possible values are:</para>
+ <para id="atscmh-rs-frame-ensemble">
<programlisting>
typedef enum atscmh_rs_frame_ensemble {
ATSCMH_RSFRAME_ENS_PRI = 0,
ATSCMH_RSFRAME_ENS_SEC = 1,
} atscmh_rs_frame_ensemble_t;
</programlisting>
+ </para>
</section>
<section id="DTV-ATSCMH-RS-CODE-MODE-PRI">
<title><constant>DTV_ATSCMH_RS_CODE_MODE_PRI</constant></title>
<para>RS code mode (primary).</para>
<para>Possible values are:</para>
+ <para id="atscmh-rs-code-mode">
<programlisting>
typedef enum atscmh_rs_code_mode {
ATSCMH_RSCODE_211_187 = 0,
@@ -596,6 +603,7 @@ typedef enum atscmh_rs_code_mode {
ATSCMH_RSCODE_235_187 = 2,
} atscmh_rs_code_mode_t;
</programlisting>
+ </para>
</section>
<section id="DTV-ATSCMH-RS-CODE-MODE-SEC">
<title><constant>DTV_ATSCMH_RS_CODE_MODE_SEC</constant></title>
@@ -613,23 +621,27 @@ typedef enum atscmh_rs_code_mode {
<title><constant>DTV_ATSCMH_SCCC_BLOCK_MODE</constant></title>
<para>Series Concatenated Convolutional Code Block Mode.</para>
<para>Possible values are:</para>
+ <para id="atscmh-sccc-block-mode">
<programlisting>
typedef enum atscmh_sccc_block_mode {
ATSCMH_SCCC_BLK_SEP = 0,
ATSCMH_SCCC_BLK_COMB = 1,
} atscmh_sccc_block_mode_t;
</programlisting>
+ </para>
</section>
<section id="DTV-ATSCMH-SCCC-CODE-MODE-A">
<title><constant>DTV_ATSCMH_SCCC_CODE_MODE_A</constant></title>
<para>Series Concatenated Convolutional Code Rate.</para>
<para>Possible values are:</para>
+ <para id="atscmh-sccc-code-mode">
<programlisting>
typedef enum atscmh_sccc_code_mode {
ATSCMH_SCCC_CODE_HLF = 0,
ATSCMH_SCCC_CODE_QTR = 1,
} atscmh_sccc_code_mode_t;
</programlisting>
+ </para>
</section>
<section id="DTV-ATSCMH-SCCC-CODE-MODE-B">
<title><constant>DTV_ATSCMH_SCCC_CODE_MODE_B</constant></title>
@@ -725,6 +737,9 @@ typedef enum fe_guard_interval {
GUARD_INTERVAL_1_128,
GUARD_INTERVAL_19_128,
GUARD_INTERVAL_19_256,
+ GUARD_INTERVAL_PN420,
+ GUARD_INTERVAL_PN595,
+ GUARD_INTERVAL_PN945,
} fe_guard_interval_t;
</programlisting>
@@ -733,6 +748,7 @@ typedef enum fe_guard_interval {
try to find the correct guard interval (if capable) and will use TMCC to fill
in the missing parameters.</para>
<para>2) Intervals 1/128, 19/128 and 19/256 are used only for DVB-T2 at present</para>
+ <para>3) DTMB specifies PN420, PN595 and PN945.</para>
</section>
<section id="DTV-TRANSMISSION-MODE">
<title><constant>DTV_TRANSMISSION_MODE</constant></title>
@@ -749,6 +765,8 @@ typedef enum fe_transmit_mode {
TRANSMISSION_MODE_1K,
TRANSMISSION_MODE_16K,
TRANSMISSION_MODE_32K,
+ TRANSMISSION_MODE_C1,
+ TRANSMISSION_MODE_C3780,
} fe_transmit_mode_t;
</programlisting>
<para>Notes:</para>
@@ -760,6 +778,7 @@ typedef enum fe_transmit_mode {
use TMCC to fill in the missing parameters.</para>
<para>3) DVB-T specifies 2K and 8K as valid sizes.</para>
<para>4) DVB-T2 specifies 1K, 2K, 4K, 8K, 16K and 32K.</para>
+ <para>5) DTMB specifies C1 and C3780.</para>
</section>
<section id="DTV-HIERARCHY">
<title><constant>DTV_HIERARCHY</constant></title>
@@ -774,17 +793,28 @@ typedef enum fe_hierarchy {
} fe_hierarchy_t;
</programlisting>
</section>
- <section id="DTV-ISDBS-TS-ID">
- <title><constant>DTV_ISDBS_TS_ID</constant></title>
- <para>Currently unused.</para>
+ <section id="DTV-STREAM-ID">
+ <title><constant>DTV_STREAM_ID</constant></title>
+ <para>DVB-S2, DVB-T2 and ISDB-S support the transmission of several
+ streams on a single transport stream.
+ This property enables the DVB driver to handle substream filtering,
+ when supported by the hardware.
+ By default, substream filtering is disabled.
+ </para><para>
+ For DVB-S2 and DVB-T2, the valid substream id range is from 0 to 255.
+ </para><para>
+ For ISDB, the valid substream id range is from 1 to 65535.
+ </para><para>
+ To disable it, you should use the special macro NO_STREAM_ID_FILTER.
+ </para><para>
+ Note: any value outside the id range also disables filtering.
+ </para>
</section>
- <section id="DTV-DVBT2-PLP-ID">
- <title><constant>DTV_DVBT2_PLP_ID</constant></title>
- <para>DVB-T2 supports Physical Layer Pipes (PLP) to allow transmission of
- many data types via a single multiplex. The API will soon support this
- at which point this section will be expanded.</para>
+ <section id="DTV-DVBT2-PLP-ID-LEGACY">
+ <title><constant>DTV_DVBT2_PLP_ID_LEGACY</constant></title>
+ <para>Obsolete, replaced with DTV_STREAM_ID.</para>
</section>
- <section id="DTV_ENUM_DELSYS">
+ <section id="DTV-ENUM-DELSYS">
<title><constant>DTV_ENUM_DELSYS</constant></title>
<para>A Multi standard frontend needs to advertise the delivery systems provided.
Applications need to enumerate the provided delivery systems, before using
@@ -796,6 +826,29 @@ typedef enum fe_hierarchy {
FE_GET_INFO. In the case of a legacy frontend, the result is just the same
as with FE_GET_INFO, but in a more structured format </para>
</section>
+ <section id="DTV-INTERLEAVING">
+ <title><constant>DTV_INTERLEAVING</constant></title>
+ <para id="fe-interleaving">Interleaving mode</para>
+ <programlisting>
+enum fe_interleaving {
+ INTERLEAVING_NONE,
+ INTERLEAVING_AUTO,
+ INTERLEAVING_240,
+ INTERLEAVING_720,
+};
+ </programlisting>
+ </section>
+ <section id="DTV-LNA">
+ <title><constant>DTV_LNA</constant></title>
+ <para>Low-noise amplifier.</para>
+ <para>Hardware might offer controllable LNA which can be set manually
+ using that parameter. Usually LNA could be found only from
+ terrestrial devices if at all.</para>
+ <para>Possible values: 0, 1, LNA_AUTO</para>
+ <para>0, LNA off</para>
+ <para>1, LNA on</para>
+ <para>use the special macro LNA_AUTO to set LNA auto</para>
+ </section>
</section>
<section id="frontend-property-terrestrial-systems">
<title>Properties used on terrestrial delivery systems</title>
@@ -816,6 +869,7 @@ typedef enum fe_hierarchy {
<listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem>
<listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem>
<listitem><para><link linkend="DTV-HIERARCHY"><constant>DTV_HIERARCHY</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem>
</itemizedlist>
</section>
<section id="dvbt2-params">
@@ -838,7 +892,8 @@ typedef enum fe_hierarchy {
<listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem>
<listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem>
<listitem><para><link linkend="DTV-HIERARCHY"><constant>DTV_HIERARCHY</constant></link></para></listitem>
- <listitem><para><link linkend="DTV-DVBT2-PLP-ID"><constant>DTV_DVBT2_PLP_ID</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-STREAM-ID"><constant>DTV_STREAM_ID</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem>
</itemizedlist>
</section>
<section id="isdbt">
@@ -925,13 +980,32 @@ typedef enum fe_hierarchy {
<listitem><para><link linkend="DTV-ATSCMH-PRC"><constant>DTV_ATSCMH_PRC</constant></link></para></listitem>
<listitem><para><link linkend="DTV-ATSCMH-RS-FRAME-MODE"><constant>DTV_ATSCMH_RS_FRAME_MODE</constant></link></para></listitem>
<listitem><para><link linkend="DTV-ATSCMH-RS-FRAME-ENSEMBLE"><constant>DTV_ATSCMH_RS_FRAME_ENSEMBLE</constant></link></para></listitem>
- <listitem><para><link linkend="DTV-ATSCMH-CODE-MODE-PRI"><constant>DTV_ATSCMH_CODE_MODE_PRI</constant></link></para></listitem>
- <listitem><para><link linkend="DTV-ATSCMH-CODE-MODE-SEC"><constant>DTV_ATSCMH_CODE_MODE_SEC</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ATSCMH-RS-CODE-MODE-PRI"><constant>DTV_ATSCMH_RS_CODE_MODE_PRI</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ATSCMH-RS-CODE-MODE-SEC"><constant>DTV_ATSCMH_RS_CODE_MODE_SEC</constant></link></para></listitem>
<listitem><para><link linkend="DTV-ATSCMH-SCCC-BLOCK-MODE"><constant>DTV_ATSCMH_SCCC_BLOCK_MODE</constant></link></para></listitem>
- <listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE_MODE-A"><constant>DTV_ATSCMH_SCCC_CODE_MODE_A</constant></link></para></listitem>
- <listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE_MODE-B"><constant>DTV_ATSCMH_SCCC_CODE_MODE_B</constant></link></para></listitem>
- <listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE_MODE-C"><constant>DTV_ATSCMH_SCCC_CODE_MODE_C</constant></link></para></listitem>
- <listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE_MODE-D"><constant>DTV_ATSCMH_SCCC_CODE_MODE_D</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE-MODE-A"><constant>DTV_ATSCMH_SCCC_CODE_MODE_A</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE-MODE-B"><constant>DTV_ATSCMH_SCCC_CODE_MODE_B</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE-MODE-C"><constant>DTV_ATSCMH_SCCC_CODE_MODE_C</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE-MODE-D"><constant>DTV_ATSCMH_SCCC_CODE_MODE_D</constant></link></para></listitem>
+ </itemizedlist>
+ </section>
+ <section id="dtmb-params">
+ <title>DTMB delivery system</title>
+ <para>The following parameters are valid for DTMB:</para>
+ <itemizedlist mark='opencircle'>
+ <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-INTERLEAVING"><constant>DTV_INTERLEAVING</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem>
</itemizedlist>
</section>
</section>
@@ -952,6 +1026,7 @@ typedef enum fe_hierarchy {
<listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
<listitem><para><link linkend="DTV-SYMBOL-RATE"><constant>DTV_SYMBOL_RATE</constant></link></para></listitem>
<listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem>
</itemizedlist>
</section>
<section id="dvbc-annex-b-params">
@@ -966,6 +1041,7 @@ typedef enum fe_hierarchy {
<listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem>
<listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
<listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem>
</itemizedlist>
</section>
</section>
@@ -999,6 +1075,7 @@ typedef enum fe_hierarchy {
<listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem>
<listitem><para><link linkend="DTV-PILOT"><constant>DTV_PILOT</constant></link></para></listitem>
<listitem><para><link linkend="DTV-ROLLOFF"><constant>DTV_ROLLOFF</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-STREAM-ID"><constant>DTV_STREAM_ID</constant></link></para></listitem>
</itemizedlist>
</section>
<section id="turbo-params">
@@ -1021,7 +1098,7 @@ typedef enum fe_hierarchy {
<listitem><para><link linkend="DTV-SYMBOL-RATE"><constant>DTV_SYMBOL_RATE</constant></link></para></listitem>
<listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem>
<listitem><para><link linkend="DTV-VOLTAGE"><constant>DTV_VOLTAGE</constant></link></para></listitem>
- <listitem><para><link linkend="DTV-ISDBS-TS-ID"><constant>DTV_ISDBS_TS_ID</constant></link></para></listitem>
+ <listitem><para><link linkend="DTV-STREAM-ID"><constant>DTV_STREAM_ID</constant></link></para></listitem>
</itemizedlist>
</section>
</section>
diff --git a/Documentation/DocBook/media/dvb/frontend.xml b/Documentation/DocBook/media/dvb/frontend.xml
index aeaed59d0f1..426c2526a45 100644
--- a/Documentation/DocBook/media/dvb/frontend.xml
+++ b/Documentation/DocBook/media/dvb/frontend.xml
@@ -66,7 +66,7 @@ supported via the new <link linkend="FE_GET_SET_PROPERTY">FE_GET_PROPERTY/FE_GET
<para>The usage of this field is deprecated, as it doesn't report all supported standards, and
will provide an incomplete information for frontends that support multiple delivery systems.
-Please use <link linkend="DTV_ENUM_DELSYS">DTV_ENUM_DELSYS</link> instead.</para>
+Please use <link linkend="DTV-ENUM-DELSYS">DTV_ENUM_DELSYS</link> instead.</para>
</section>
<section id="fe-caps-t">
@@ -101,6 +101,7 @@ a specific frontend type.</para>
FE_CAN_8VSB = 0x200000,
FE_CAN_16VSB = 0x400000,
FE_HAS_EXTENDED_CAPS = 0x800000,
+ FE_CAN_MULTISTREAM = 0x4000000,
FE_CAN_TURBO_FEC = 0x8000000,
FE_CAN_2G_MODULATION = 0x10000000,
FE_NEEDS_BENDING = 0x20000000,
@@ -207,18 +208,44 @@ spec.</para>
<para>Several functions of the frontend device use the fe_status data type defined
by</para>
<programlisting>
- typedef enum fe_status {
- FE_HAS_SIGNAL = 0x01, /&#x22C6; found something above the noise level &#x22C6;/
- FE_HAS_CARRIER = 0x02, /&#x22C6; found a DVB signal &#x22C6;/
- FE_HAS_VITERBI = 0x04, /&#x22C6; FEC is stable &#x22C6;/
- FE_HAS_SYNC = 0x08, /&#x22C6; found sync bytes &#x22C6;/
- FE_HAS_LOCK = 0x10, /&#x22C6; everything's working... &#x22C6;/
- FE_TIMEDOUT = 0x20, /&#x22C6; no lock within the last ~2 seconds &#x22C6;/
- FE_REINIT = 0x40 /&#x22C6; frontend was reinitialized, &#x22C6;/
- } fe_status_t; /&#x22C6; application is recommned to reset &#x22C6;/
+typedef enum fe_status {
+ FE_HAS_SIGNAL = 0x01,
+ FE_HAS_CARRIER = 0x02,
+ FE_HAS_VITERBI = 0x04,
+ FE_HAS_SYNC = 0x08,
+ FE_HAS_LOCK = 0x10,
+ FE_TIMEDOUT = 0x20,
+ FE_REINIT = 0x40,
+} fe_status_t;
</programlisting>
-<para>to indicate the current state and/or state changes of the frontend hardware.
-</para>
+<para>to indicate the current state and/or state changes of the frontend hardware:
+</para>
+
+<informaltable><tgroup cols="2"><tbody>
+<row>
+<entry align="char">FE_HAS_SIGNAL</entry>
+<entry align="char">The frontend has found something above the noise level</entry>
+</row><row>
+<entry align="char">FE_HAS_CARRIER</entry>
+<entry align="char">The frontend has found a DVB signal</entry>
+</row><row>
+<entry align="char">FE_HAS_VITERBI</entry>
+<entry align="char">The frontend FEC code is stable</entry>
+</row><row>
+<entry align="char">FE_HAS_SYNC</entry>
+<entry align="char">Syncronization bytes was found</entry>
+</row><row>
+<entry align="char">FE_HAS_LOCK</entry>
+<entry align="char">The DVB were locked and everything is working</entry>
+</row><row>
+<entry align="char">FE_TIMEDOUT</entry>
+<entry align="char">no lock within the last about 2 seconds</entry>
+</row><row>
+<entry align="char">FE_REINIT</entry>
+<entry align="char">The frontend was reinitialized, application is
+recommended to reset DiSEqC, tone and parameters</entry>
+</row>
+</tbody></tgroup></informaltable>
</section>
@@ -238,7 +265,7 @@ and to add newer delivery systems.</para>
<constant>FE_GET_PROPERTY/FE_SET_PROPERTY</constant></link> instead, in
order to be able to support the newer System Delivery like DVB-S2, DVB-T2,
DVB-C2, ISDB, etc.</para>
-<para>All kinds of parameters are combined as an union in the FrontendParameters structure:</para>
+<para>All kinds of parameters are combined as an union in the FrontendParameters structure:
<programlisting>
struct dvb_frontend_parameters {
uint32_t frequency; /&#x22C6; (absolute) frequency in Hz for QAM/OFDM &#x22C6;/
@@ -251,12 +278,13 @@ struct dvb_frontend_parameters {
struct dvb_vsb_parameters vsb;
} u;
};
-</programlisting>
+</programlisting></para>
<para>In the case of QPSK frontends the <constant>frequency</constant> field specifies the intermediate
frequency, i.e. the offset which is effectively added to the local oscillator frequency (LOF) of
the LNB. The intermediate frequency has to be specified in units of kHz. For QAM and
OFDM frontends the <constant>frequency</constant> specifies the absolute frequency and is given in Hz.
</para>
+
<section id="dvb-qpsk-parameters">
<title>QPSK parameters</title>
<para>For satellite QPSK frontends you have to use the <constant>dvb_qpsk_parameters</constant> structure:</para>
@@ -321,8 +349,8 @@ itself.
<section id="fe-code-rate-t">
<title>frontend code rate</title>
<para>The possible values for the <constant>fec_inner</constant> field used on
-<link refend="dvb-qpsk-parameters"><constant>struct dvb_qpsk_parameters</constant></link> and
-<link refend="dvb-qam-parameters"><constant>struct dvb_qam_parameters</constant></link> are:
+<link linkend="dvb-qpsk-parameters"><constant>struct dvb_qpsk_parameters</constant></link> and
+<link linkend="dvb-qam-parameters"><constant>struct dvb_qam_parameters</constant></link> are:
</para>
<programlisting>
typedef enum fe_code_rate {
@@ -347,9 +375,9 @@ detection.
<section id="fe-modulation-t">
<title>frontend modulation type for QAM, OFDM and VSB</title>
<para>For cable and terrestrial frontends, e. g. for
-<link refend="dvb-qam-parameters"><constant>struct dvb_qpsk_parameters</constant></link>,
-<link refend="dvb-ofdm-parameters"><constant>struct dvb_qam_parameters</constant></link> and
-<link refend="dvb-vsb-parameters"><constant>struct dvb_qam_parameters</constant></link>,
+<link linkend="dvb-qam-parameters"><constant>struct dvb_qpsk_parameters</constant></link>,
+<link linkend="dvb-ofdm-parameters"><constant>struct dvb_qam_parameters</constant></link> and
+<link linkend="dvb-vsb-parameters"><constant>struct dvb_qam_parameters</constant></link>,
it needs to specify the quadrature modulation mode which can be one of the following:
</para>
<programlisting>
@@ -370,8 +398,8 @@ it needs to specify the quadrature modulation mode which can be one of the follo
} fe_modulation_t;
</programlisting>
</section>
-<para>Finally, there are several more parameters for OFDM:
-</para>
+<section>
+<title>More OFDM parameters</title>
<section id="fe-transmit-mode-t">
<title>Number of carriers per channel</title>
<programlisting>
@@ -427,6 +455,7 @@ typedef enum fe_hierarchy {
} fe_hierarchy_t;
</programlisting>
</section>
+</section>
</section>
diff --git a/Documentation/DocBook/media/dvb/intro.xml b/Documentation/DocBook/media/dvb/intro.xml
index 170064a3dc8..2048b53d19b 100644
--- a/Documentation/DocBook/media/dvb/intro.xml
+++ b/Documentation/DocBook/media/dvb/intro.xml
@@ -205,7 +205,7 @@ a partial path like:</para>
additional include file <emphasis
role="tt">linux/dvb/version.h</emphasis> exists, which defines the
constant <emphasis role="tt">DVB_API_VERSION</emphasis>. This document
-describes <emphasis role="tt">DVB_API_VERSION 5.4</emphasis>.
+describes <emphasis role="tt">DVB_API_VERSION 5.8</emphasis>.
</para>
</section>
diff --git a/Documentation/DocBook/media/dvb/kdapi.xml b/Documentation/DocBook/media/dvb/kdapi.xml
index 6c67481eaa4..6c11ec52cbe 100644
--- a/Documentation/DocBook/media/dvb/kdapi.xml
+++ b/Documentation/DocBook/media/dvb/kdapi.xml
@@ -2,7 +2,7 @@
<para>The kernel demux API defines a driver-internal interface for registering low-level,
hardware specific driver to a hardware independent demux layer. It is only of interest for
DVB device driver writers. The header file for this API is named <emphasis role="tt">demux.h</emphasis> and located in
-<emphasis role="tt">drivers/media/dvb/dvb-core</emphasis>.
+<emphasis role="tt">drivers/media/dvb-core</emphasis>.
</para>
<para>Maintainer note: This section must be reviewed. It is probably out of date.
</para>
diff --git a/Documentation/DocBook/media/dvb/net.xml b/Documentation/DocBook/media/dvb/net.xml
index 67d37e5ce59..a193e86941b 100644
--- a/Documentation/DocBook/media/dvb/net.xml
+++ b/Documentation/DocBook/media/dvb/net.xml
@@ -26,4 +26,131 @@ struct dvb_net_if {
<title>DVB net Function Calls</title>
<para>To be written&#x2026;
</para>
+
+<section id="NET_ADD_IF"
+role="subsection"><title>NET_ADD_IF</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl is undocumented. Documentation is welcome.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = NET_ADD_IF,
+ struct dvb_net_if *if);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals NET_ADD_IF for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>struct dvb_net_if *if
+</para>
+</entry><entry
+ align="char">
+<para>Undocumented.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+</section>
+
+<section id="NET_REMOVE_IF"
+role="subsection"><title>NET_REMOVE_IF</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl is undocumented. Documentation is welcome.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = NET_REMOVE_IF);
+</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals NET_REMOVE_IF for this command.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+</section>
+
+<section id="NET_GET_IF"
+role="subsection"><title>NET_GET_IF</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl is undocumented. Documentation is welcome.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(fd, int request = NET_GET_IF,
+ struct dvb_net_if *if);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals NET_GET_IF for this command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>struct dvb_net_if *if
+</para>
+</entry><entry
+ align="char">
+<para>Undocumented.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+</section>
</section>
diff --git a/Documentation/DocBook/media/dvb/video.xml b/Documentation/DocBook/media/dvb/video.xml
index 25fb823226b..3ea1ca7e785 100644
--- a/Documentation/DocBook/media/dvb/video.xml
+++ b/Documentation/DocBook/media/dvb/video.xml
@@ -15,6 +15,10 @@ the audio and video device as well as the video4linux device.
<para>The ioctls that deal with SPUs (sub picture units) and navigation packets are only
supported on some MPEG decoders made for DVD playback.
</para>
+<para>
+These ioctls were also used by V4L2 to control MPEG decoders implemented in V4L2. The use
+of these ioctls for that purpose has been made obsolete and proper V4L2 ioctls or controls
+have been created to replace that functionality.</para>
<section id="video_types">
<title>Video Data Types</title>
@@ -55,7 +59,7 @@ typedef enum {
</section>
<section id="video-stream-source-t">
-<title>video stream source</title>
+<title>video_stream_source_t</title>
<para>The video stream source is set through the VIDEO_SELECT_SOURCE call and can take
the following values, depending on whether we are replaying from an internal (demuxer) or
external (user write) source.
@@ -76,7 +80,7 @@ call.
</section>
<section id="video-play-state-t">
-<title>video play state</title>
+<title>video_play_state_t</title>
<para>The following values can be returned by the VIDEO_GET_STATUS call representing the
state of video playback.
</para>
@@ -90,9 +94,9 @@ typedef enum {
</section>
<section id="video-command">
+<title>struct video_command</title>
<para>The structure must be zeroed before use by the application
This ensures it can be extended safely in the future.</para>
-<title>struct video-command</title>
<programlisting>
struct video_command {
__u32 cmd;
@@ -121,7 +125,7 @@ struct video_command {
</section>
<section id="video-size-t">
-<title>struct video_size-t</title>
+<title>video_size_t</title>
<programlisting>
typedef struct {
int w;
@@ -217,7 +221,7 @@ bits set according to the hardwares capabilities.
</section>
<section id="video-system">
-<title>video system</title>
+<title>video_system_t</title>
<para>A call to VIDEO_SET_SYSTEM sets the desired video system for TV output. The
following system types can be set:
</para>
@@ -263,7 +267,7 @@ call expects the following format for that information:
</section>
<section id="video-spu">
-<title>video SPU</title>
+<title>struct video_spu</title>
<para>Calling VIDEO_SET_SPU deactivates or activates SPU decoding, according to the
following format:
</para>
@@ -277,12 +281,12 @@ following format:
</section>
<section id="video-spu-palette">
-<title>video SPU palette</title>
+<title>struct video_spu_palette</title>
<para>The following structure is used to set the SPU palette by calling VIDEO_SPU_PALETTE:
</para>
<programlisting>
typedef
- struct video_spu_palette{
+ struct video_spu_palette {
int length;
uint8_t &#x22C6;palette;
} video_spu_palette_t;
@@ -290,13 +294,13 @@ following format:
</section>
<section id="video-navi-pack">
-<title>video NAVI pack</title>
+<title>struct video_navi_pack</title>
<para>In order to get the navigational data the following structure has to be passed to the ioctl
VIDEO_GET_NAVI:
</para>
<programlisting>
typedef
- struct video_navi_pack{
+ struct video_navi_pack {
int length; /&#x22C6; 0 ... 1024 &#x22C6;/
uint8_t data[1024];
} video_navi_pack_t;
@@ -305,7 +309,7 @@ VIDEO_GET_NAVI:
<section id="video-attributes-t">
-<title>video attributes</title>
+<title>video_attributes_t</title>
<para>The following attributes can be set by a call to VIDEO_SET_ATTRIBUTES:
</para>
<programlisting>
@@ -541,6 +545,8 @@ VIDEO_GET_NAVI:
role="subsection"><title>VIDEO_STOP</title>
<para>DESCRIPTION
</para>
+<para>This ioctl is for DVB devices only. To control a V4L2 decoder use the V4L2
+&VIDIOC-DECODER-CMD; instead.</para>
<informaltable><tgroup cols="1"><tbody><row><entry
align="char">
<para>This ioctl call asks the Video Device to stop playing the current stream.
@@ -598,6 +604,8 @@ role="subsection"><title>VIDEO_STOP</title>
role="subsection"><title>VIDEO_PLAY</title>
<para>DESCRIPTION
</para>
+<para>This ioctl is for DVB devices only. To control a V4L2 decoder use the V4L2
+&VIDIOC-DECODER-CMD; instead.</para>
<informaltable><tgroup cols="1"><tbody><row><entry
align="char">
<para>This ioctl call asks the Video Device to start playing a video stream from the
@@ -634,6 +642,8 @@ role="subsection"><title>VIDEO_PLAY</title>
role="subsection"><title>VIDEO_FREEZE</title>
<para>DESCRIPTION
</para>
+<para>This ioctl is for DVB devices only. To control a V4L2 decoder use the V4L2
+&VIDIOC-DECODER-CMD; instead.</para>
<informaltable><tgroup cols="1"><tbody><row><entry
align="char">
<para>This ioctl call suspends the live video stream being played. Decoding
@@ -674,6 +684,8 @@ role="subsection"><title>VIDEO_FREEZE</title>
role="subsection"><title>VIDEO_CONTINUE</title>
<para>DESCRIPTION
</para>
+<para>This ioctl is for DVB devices only. To control a V4L2 decoder use the V4L2
+&VIDIOC-DECODER-CMD; instead.</para>
<informaltable><tgroup cols="1"><tbody><row><entry
align="char">
<para>This ioctl call restarts decoding and playing processes of the video stream
@@ -710,6 +722,9 @@ role="subsection"><title>VIDEO_CONTINUE</title>
role="subsection"><title>VIDEO_SELECT_SOURCE</title>
<para>DESCRIPTION
</para>
+<para>This ioctl is for DVB devices only. This ioctl was also supported by the
+V4L2 ivtv driver, but that has been replaced by the ivtv-specific
+<constant>IVTV_IOC_PASSTHROUGH_MODE</constant> ioctl.</para>
<informaltable><tgroup cols="1"><tbody><row><entry
align="char">
<para>This ioctl call informs the video device which source shall be used for the input
@@ -845,10 +860,160 @@ role="subsection"><title>VIDEO_GET_STATUS</title>
</row></tbody></tgroup></informaltable>
&return-value-dvb;
+</section><section id="VIDEO_GET_FRAME_COUNT"
+role="subsection"><title>VIDEO_GET_FRAME_COUNT</title>
+<para>DESCRIPTION
+</para>
+<para>This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders this
+ioctl has been replaced by the <constant>V4L2_CID_MPEG_VIDEO_DEC_FRAME</constant> control.</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call asks the Video Device to return the number of displayed frames
+since the decoder was started.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request =
+ VIDEO_GET_FRAME_COUNT, __u64 *pts);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_GET_FRAME_COUNT for this
+ command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>__u64 *pts
+</para>
+</entry><entry
+ align="char">
+<para>Returns the number of frames displayed since the decoder was started.
+</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="VIDEO_GET_PTS"
+role="subsection"><title>VIDEO_GET_PTS</title>
+<para>DESCRIPTION
+</para>
+<para>This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders this
+ioctl has been replaced by the <constant>V4L2_CID_MPEG_VIDEO_DEC_PTS</constant> control.</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call asks the Video Device to return the current PTS timestamp.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request =
+ VIDEO_GET_PTS, __u64 *pts);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_GET_PTS for this
+ command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>__u64 *pts
+</para>
+</entry><entry
+ align="char">
+<para>Returns the 33-bit timestamp as defined in ITU T-REC-H.222.0 / ISO/IEC 13818-1.
+</para>
+<para>
+The PTS should belong to the currently played
+frame if possible, but may also be a value close to it
+like the PTS of the last decoded frame or the last PTS
+extracted by the PES parser.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="VIDEO_GET_FRAME_RATE"
+role="subsection"><title>VIDEO_GET_FRAME_RATE</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl call asks the Video Device to return the current framerate.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request =
+ VIDEO_GET_FRAME_RATE, unsigned int *rate);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_GET_FRAME_RATE for this
+ command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>unsigned int *rate
+</para>
+</entry><entry
+ align="char">
+<para>Returns the framerate in number of frames per 1000 seconds.
+</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
</section><section id="VIDEO_GET_EVENT"
role="subsection"><title>VIDEO_GET_EVENT</title>
<para>DESCRIPTION
</para>
+<para>This ioctl is for DVB devices only. To get events from a V4L2 decoder use the V4L2
+&VIDIOC-DQEVENT; ioctl instead.</para>
<informaltable><tgroup cols="1"><tbody><row><entry
align="char">
<para>This ioctl call returns an event of type video_event if available. If an event is
@@ -914,6 +1079,152 @@ role="subsection"><title>VIDEO_GET_EVENT</title>
</entry>
</row></tbody></tgroup></informaltable>
+</section><section id="VIDEO_COMMAND"
+role="subsection"><title>VIDEO_COMMAND</title>
+<para>DESCRIPTION
+</para>
+<para>This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders this
+ioctl has been replaced by the &VIDIOC-DECODER-CMD; ioctl.</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl commands the decoder. The <constant>video_command</constant> struct
+is a subset of the <constant>v4l2_decoder_cmd</constant> struct, so refer to the
+&VIDIOC-DECODER-CMD; documentation for more information.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request =
+ VIDEO_COMMAND, struct video_command *cmd);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_COMMAND for this
+ command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>struct video_command *cmd
+</para>
+</entry><entry
+ align="char">
+<para>Commands the decoder.
+</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="VIDEO_TRY_COMMAND"
+role="subsection"><title>VIDEO_TRY_COMMAND</title>
+<para>DESCRIPTION
+</para>
+<para>This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders this
+ioctl has been replaced by the &VIDIOC-TRY-DECODER-CMD; ioctl.</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl tries a decoder command. The <constant>video_command</constant> struct
+is a subset of the <constant>v4l2_decoder_cmd</constant> struct, so refer to the
+&VIDIOC-TRY-DECODER-CMD; documentation for more information.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request =
+ VIDEO_TRY_COMMAND, struct video_command *cmd);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_TRY_COMMAND for this
+ command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>struct video_command *cmd
+</para>
+</entry><entry
+ align="char">
+<para>Try a decoder command.
+</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
+</section><section id="VIDEO_GET_SIZE"
+role="subsection"><title>VIDEO_GET_SIZE</title>
+<para>DESCRIPTION
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>This ioctl returns the size and aspect ratio.</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>SYNOPSIS
+</para>
+<informaltable><tgroup cols="1"><tbody><row><entry
+ align="char">
+<para>int ioctl(int fd, int request =
+ VIDEO_GET_SIZE, video_size_t *size);</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+<para>PARAMETERS
+</para>
+<informaltable><tgroup cols="2"><tbody><row><entry
+ align="char">
+<para>int fd</para>
+</entry><entry
+ align="char">
+<para>File descriptor returned by a previous call to open().</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>int request</para>
+</entry><entry
+ align="char">
+<para>Equals VIDEO_GET_SIZE for this
+ command.</para>
+</entry>
+ </row><row><entry
+ align="char">
+<para>video_size_t *size
+</para>
+</entry><entry
+ align="char">
+<para>Returns the size and aspect ratio.
+</para>
+</entry>
+ </row></tbody></tgroup></informaltable>
+&return-value-dvb;
+
</section><section id="VIDEO_SET_DISPLAY_FORMAT"
role="subsection"><title>VIDEO_SET_DISPLAY_FORMAT</title>
<para>DESCRIPTION
diff --git a/Documentation/DocBook/media/v4l/biblio.xml b/Documentation/DocBook/media/v4l/biblio.xml
index 7c49facecd2..d2eb79e41a0 100644
--- a/Documentation/DocBook/media/v4l/biblio.xml
+++ b/Documentation/DocBook/media/v4l/biblio.xml
@@ -178,23 +178,23 @@ Signal - NTSC for Studio Applications"</title>
1125-Line High-Definition Production"</title>
</biblioentry>
- <biblioentry id="en50067">
- <abbrev>EN&nbsp;50067</abbrev>
+ <biblioentry id="iec62106">
+ <abbrev>IEC&nbsp;62106</abbrev>
<authorgroup>
- <corpauthor>European Committee for Electrotechnical Standardization
-(<ulink url="http://www.cenelec.eu">http://www.cenelec.eu</ulink>)</corpauthor>
+ <corpauthor>International Electrotechnical Commission
+(<ulink url="http://www.iec.ch">http://www.iec.ch</ulink>)</corpauthor>
</authorgroup>
<title>Specification of the radio data system (RDS) for VHF/FM sound broadcasting
in the frequency range from 87,5 to 108,0 MHz</title>
</biblioentry>
<biblioentry id="nrsc4">
- <abbrev>NRSC-4</abbrev>
+ <abbrev>NRSC-4-B</abbrev>
<authorgroup>
<corpauthor>National Radio Systems Committee
(<ulink url="http://www.nrscstandards.org">http://www.nrscstandards.org</ulink>)</corpauthor>
</authorgroup>
- <title>NTSC-4: United States RBDS Standard</title>
+ <title>NRSC-4-B: United States RBDS Standard</title>
</biblioentry>
<biblioentry id="iso12232">
@@ -226,4 +226,44 @@ in the frequency range from 87,5 to 108,0 MHz</title>
<title>VESA and Industry Standards and Guidelines for Computer Display Monitor Timing (DMT)</title>
</biblioentry>
+ <biblioentry id="vesaedid">
+ <abbrev>EDID</abbrev>
+ <authorgroup>
+ <corpauthor>Video Electronics Standards Association
+(<ulink url="http://www.vesa.org">http://www.vesa.org</ulink>)</corpauthor>
+ </authorgroup>
+ <title>VESA Enhanced Extended Display Identification Data Standard</title>
+ <subtitle>Release A, Revision 2</subtitle>
+ </biblioentry>
+
+ <biblioentry id="hdcp">
+ <abbrev>HDCP</abbrev>
+ <authorgroup>
+ <corpauthor>Digital Content Protection LLC
+(<ulink url="http://www.digital-cp.com">http://www.digital-cp.com</ulink>)</corpauthor>
+ </authorgroup>
+ <title>High-bandwidth Digital Content Protection System</title>
+ <subtitle>Revision 1.3</subtitle>
+ </biblioentry>
+
+ <biblioentry id="hdmi">
+ <abbrev>HDMI</abbrev>
+ <authorgroup>
+ <corpauthor>HDMI Licensing LLC
+(<ulink url="http://www.hdmi.org">http://www.hdmi.org</ulink>)</corpauthor>
+ </authorgroup>
+ <title>High-Definition Multimedia Interface</title>
+ <subtitle>Specification Version 1.4a</subtitle>
+ </biblioentry>
+
+ <biblioentry id="dp">
+ <abbrev>DP</abbrev>
+ <authorgroup>
+ <corpauthor>Video Electronics Standards Association
+(<ulink url="http://www.vesa.org">http://www.vesa.org</ulink>)</corpauthor>
+ </authorgroup>
+ <title>VESA DisplayPort Standard</title>
+ <subtitle>Version 1, Revision 2</subtitle>
+ </biblioentry>
+
</bibliography>
diff --git a/Documentation/DocBook/media/v4l/common.xml b/Documentation/DocBook/media/v4l/common.xml
index 4101aeb5654..73c6847436c 100644
--- a/Documentation/DocBook/media/v4l/common.xml
+++ b/Documentation/DocBook/media/v4l/common.xml
@@ -464,14 +464,14 @@ The <structfield>type</structfield> field of the respective
<structfield>tuner</structfield> field contains the index number of
the tuner.</para>
- <para>Radio devices have exactly one tuner with index zero, no
+ <para>Radio input devices have exactly one tuner with index zero, no
video inputs.</para>
<para>To query and change tuner properties applications use the
&VIDIOC-G-TUNER; and &VIDIOC-S-TUNER; ioctl, respectively. The
&v4l2-tuner; returned by <constant>VIDIOC_G_TUNER</constant> also
contains signal status information applicable when the tuner of the
-current video input, or a radio tuner is queried. Note that
+current video or radio input is queried. Note that
<constant>VIDIOC_S_TUNER</constant> does not switch the current tuner,
when there is more than one at all. The tuner is solely determined by
the current video input. Drivers must support both ioctls and set the
@@ -491,8 +491,17 @@ the modulator. The <structfield>type</structfield> field of the
respective &v4l2-output; returned by the &VIDIOC-ENUMOUTPUT; ioctl is
set to <constant>V4L2_OUTPUT_TYPE_MODULATOR</constant> and its
<structfield>modulator</structfield> field contains the index number
-of the modulator. This specification does not define radio output
-devices.</para>
+of the modulator.</para>
+
+ <para>Radio output devices have exactly one modulator with index
+zero, no video outputs.</para>
+
+ <para>A video or radio device cannot support both a tuner and a
+modulator. Two separate device nodes will have to be used for such
+hardware, one that supports the tuner functionality and one that supports
+the modulator functionality. The reason is a limitation with the
+&VIDIOC-S-FREQUENCY; ioctl where you cannot specify whether the frequency
+is for a tuner or a modulator.</para>
<para>To query and change modulator properties applications use
the &VIDIOC-G-MODULATOR; and &VIDIOC-S-MODULATOR; ioctl. Note that
@@ -555,7 +564,7 @@ automatically.</para>
<para>To query and select the standard used by the current video
input or output applications call the &VIDIOC-G-STD; and
&VIDIOC-S-STD; ioctl, respectively. The <emphasis>received</emphasis>
-standard can be sensed with the &VIDIOC-QUERYSTD; ioctl. Note parameter of all these ioctls is a pointer to a &v4l2-std-id; type (a standard set), <emphasis>not</emphasis> an index into the standard enumeration.<footnote>
+standard can be sensed with the &VIDIOC-QUERYSTD; ioctl. Note that the parameter of all these ioctls is a pointer to a &v4l2-std-id; type (a standard set), <emphasis>not</emphasis> an index into the standard enumeration.<footnote>
<para>An alternative to the current scheme is to use pointers
to indices as arguments of <constant>VIDIOC_G_STD</constant> and
<constant>VIDIOC_S_STD</constant>, the &v4l2-input; and
@@ -579,30 +588,28 @@ switch to a standard by &v4l2-std-id;.</para>
</footnote> Drivers must implement all video standard ioctls
when the device has one or more video inputs or outputs.</para>
- <para>Special rules apply to USB cameras where the notion of video
-standards makes little sense. More generally any capture device,
-output devices accordingly, which is <itemizedlist>
+ <para>Special rules apply to devices such as USB cameras where the notion of video
+standards makes little sense. More generally for any capture or output device
+which is: <itemizedlist>
<listitem>
<para>incapable of capturing fields or frames at the nominal
rate of the video standard, or</para>
</listitem>
<listitem>
- <para>where <link linkend="buffer">timestamps</link> refer
-to the instant the field or frame was received by the driver, not the
-capture time, or</para>
- </listitem>
- <listitem>
- <para>where <link linkend="buffer">sequence numbers</link>
-refer to the frames received by the driver, not the captured
-frames.</para>
+ <para>that does not support the video standard formats at all.</para>
</listitem>
</itemizedlist> Here the driver shall set the
<structfield>std</structfield> field of &v4l2-input; and &v4l2-output;
-to zero, the <constant>VIDIOC_G_STD</constant>,
+to zero and the <constant>VIDIOC_G_STD</constant>,
<constant>VIDIOC_S_STD</constant>,
<constant>VIDIOC_QUERYSTD</constant> and
<constant>VIDIOC_ENUMSTD</constant> ioctls shall return the
-&EINVAL;.<footnote>
+&ENOTTY;.<footnote>
+ <para>See <xref linkend="buffer" /> for a rationale.</para>
+ <para>Applications can make use of the <xref linkend="input-capabilities" /> and
+<xref linkend="output-capabilities"/> flags to determine whether the video standard ioctls
+are available for the device.</para>
+&ENOTTY;.
<para>See <xref linkend="buffer" /> for a rationale. Probably
even USB cameras follow some well known video standard. It might have
been better to explicitly indicate elsewhere if a device cannot live
@@ -617,9 +624,9 @@ up to normal expectations, instead of this exception.</para>
&v4l2-standard; standard;
if (-1 == ioctl (fd, &VIDIOC-G-STD;, &amp;std_id)) {
- /* Note when VIDIOC_ENUMSTD always returns EINVAL this
+ /* Note when VIDIOC_ENUMSTD always returns ENOTTY this
is no video device or it falls under the USB exception,
- and VIDIOC_G_STD returning EINVAL is no error. */
+ and VIDIOC_G_STD returning ENOTTY is no error. */
perror ("VIDIOC_G_STD");
exit (EXIT_FAILURE);
diff --git a/Documentation/DocBook/media/v4l/compat.xml b/Documentation/DocBook/media/v4l/compat.xml
index ea42ef82494..3dd9e78815d 100644
--- a/Documentation/DocBook/media/v4l/compat.xml
+++ b/Documentation/DocBook/media/v4l/compat.xml
@@ -1476,7 +1476,7 @@ follows.<informaltable>
</row>
<row>
<entry><constant>V4L2_BUF_TYPE_PRIVATE_BASE</constant></entry>
- <entry><constant>V4L2_BUF_TYPE_PRIVATE</constant></entry>
+ <entry><constant>V4L2_BUF_TYPE_PRIVATE</constant> (but this is deprecated)</entry>
</row>
</tbody>
</tgroup>
@@ -2377,10 +2377,11 @@ that used it. It was originally scheduled for removal in 2.6.35.
<para>V4L2_CTRL_FLAG_VOLATILE was added to signal volatile controls to userspace.</para>
</listitem>
<listitem>
- <para>Add selection API for extended control over cropping and
-composing. Does not affect the compatibility of current drivers and
-applications. See <link linkend="selection-api"> selection API </link> for
-details.</para>
+ <para>Add selection API for extended control over cropping
+ and composing. Does not affect the compatibility of current
+ drivers and applications. See <link
+ linkend="selection-api"> selection API </link> for
+ details.</para>
</listitem>
</orderedlist>
</section>
@@ -2458,6 +2459,24 @@ details.</para>
</orderedlist>
</section>
+ <section>
+ <title>V4L2 in Linux 3.6</title>
+ <orderedlist>
+ <listitem>
+ <para>Replaced <structfield>input</structfield> in
+ <structname>v4l2_buffer</structname> by
+ <structfield>reserved2</structfield> and removed
+ <constant>V4L2_BUF_FLAG_INPUT</constant>.</para>
+ </listitem>
+ <listitem>
+ <para>Added V4L2_CAP_VIDEO_M2M and V4L2_CAP_VIDEO_M2M_MPLANE capabilities.</para>
+ </listitem>
+ <listitem>
+ <para>Added support for frequency band enumerations: &VIDIOC-ENUM-FREQ-BANDS;.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
<section id="other">
<title>Relation of V4L2 to other Linux multimedia APIs</title>
@@ -2536,29 +2555,6 @@ and may change in the future.</para>
<para>Video Output Overlay (OSD) Interface, <xref
linkend="osd" />.</para>
</listitem>
- <listitem>
- <para><constant>V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY</constant>,
- &v4l2-buf-type;, <xref linkend="v4l2-buf-type" />.</para>
- </listitem>
- <listitem>
- <para><constant>V4L2_CAP_VIDEO_OUTPUT_OVERLAY</constant>,
-&VIDIOC-QUERYCAP; ioctl, <xref linkend="device-capabilities" />.</para>
- </listitem>
- <listitem>
- <para>&VIDIOC-ENUM-FRAMESIZES; and
-&VIDIOC-ENUM-FRAMEINTERVALS; ioctls.</para>
- </listitem>
- <listitem>
- <para>&VIDIOC-G-ENC-INDEX; ioctl.</para>
- </listitem>
- <listitem>
- <para>&VIDIOC-ENCODER-CMD; and &VIDIOC-TRY-ENCODER-CMD;
-ioctls.</para>
- </listitem>
- <listitem>
- <para>&VIDIOC-DECODER-CMD; and &VIDIOC-TRY-DECODER-CMD;
-ioctls.</para>
- </listitem>
<listitem>
<para>&VIDIOC-DBG-G-REGISTER; and &VIDIOC-DBG-S-REGISTER;
ioctls.</para>
@@ -2584,8 +2580,18 @@ ioctls.</para>
and &VIDIOC-SUBDEV-S-SELECTION; ioctls.</para>
</listitem>
<listitem>
- <para><link linkend="v4l2-auto-focus-area"><constant>
- V4L2_CID_AUTO_FOCUS_AREA</constant></link> control.</para>
+ <para>Support for frequency band enumeration: &VIDIOC-ENUM-FREQ-BANDS; ioctl.</para>
+ </listitem>
+ <listitem>
+ <para>Vendor and device specific media bus pixel formats.
+ <xref linkend="v4l2-mbus-vendor-spec-fmts" />.</para>
+ </listitem>
+ <listitem>
+ <para>Importing DMABUF file descriptors as a new IO method described
+ in <xref linkend="dmabuf" />.</para>
+ </listitem>
+ <listitem>
+ <para>Exporting DMABUF files using &VIDIOC-EXPBUF; ioctl.</para>
</listitem>
</itemizedlist>
</section>
diff --git a/Documentation/DocBook/media/v4l/controls.xml b/Documentation/DocBook/media/v4l/controls.xml
index cda0dfb6769..7fe5be1d3bb 100644
--- a/Documentation/DocBook/media/v4l/controls.xml
+++ b/Documentation/DocBook/media/v4l/controls.xml
@@ -373,6 +373,11 @@ minimum value disables backlight compensation.</entry>
</entry>
</row>
<row>
+ <entry><constant>V4L2_CID_AUTOBRIGHTNESS</constant></entry>
+ <entry>boolean</entry>
+ <entry>Enable Automatic Brightness.</entry>
+ </row>
+ <row>
<entry><constant>V4L2_CID_ROTATE</constant></entry>
<entry>integer</entry>
<entry>Rotates the image by specified angle. Common angles are 90,
@@ -1581,7 +1586,6 @@ frame counter of the frame that is currently displayed (decoded). This value is
the decoder is started.</entry>
</row>
-
<row><entry></entry></row>
<row>
<entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE</constant>&nbsp;</entry>
@@ -2265,6 +2269,14 @@ Applicable to the MPEG1, MPEG2, MPEG4 encoders.</entry>
</row>
<row><entry></entry></row>
+ <row id="v4l2-mpeg-video-vbv-delay">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_VBV_DELAY</constant>&nbsp;</entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">Sets the initial delay in milliseconds for
+VBV buffer control.</entry>
+ </row>
+
+ <row><entry></entry></row>
<row>
<entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE</constant>&nbsp;</entry>
<entry>integer</entry>
@@ -2329,6 +2341,265 @@ Applicable to the MPEG4 decoder.</entry>
</row><row><entry spanname="descr">vop_time_increment value for MPEG4. Applicable to the MPEG4 encoder.</entry>
</row>
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_SEI_FRAME_PACKING</constant>&nbsp;</entry>
+ <entry>boolean</entry>
+ </row>
+ <row><entry spanname="descr">Enable generation of frame packing supplemental enhancement information in the encoded bitstream.
+The frame packing SEI message contains the arrangement of L and R planes for 3D viewing. Applicable to the H264 encoder.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_SEI_FP_CURRENT_FRAME_0</constant>&nbsp;</entry>
+ <entry>boolean</entry>
+ </row>
+ <row><entry spanname="descr">Sets current frame as frame0 in frame packing SEI.
+Applicable to the H264 encoder.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-video-h264-sei-fp-arrangement-type">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE</constant>&nbsp;</entry>
+ <entry>enum&nbsp;v4l2_mpeg_video_h264_sei_fp_arrangement_type</entry>
+ </row>
+ <row><entry spanname="descr">Frame packing arrangement type for H264 SEI.
+Applicable to the H264 encoder.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE_CHEKERBOARD</constant>&nbsp;</entry>
+ <entry>Pixels are alternatively from L and R.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE_COLUMN</constant>&nbsp;</entry>
+ <entry>L and R are interlaced by column.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE_ROW</constant>&nbsp;</entry>
+ <entry>L and R are interlaced by row.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE_SIDE_BY_SIDE</constant>&nbsp;</entry>
+ <entry>L is on the left, R on the right.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE_TOP_BOTTOM</constant>&nbsp;</entry>
+ <entry>L is on top, R on bottom.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE_TEMPORAL</constant>&nbsp;</entry>
+ <entry>One view per frame.</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_FMO</constant>&nbsp;</entry>
+ <entry>boolean</entry>
+ </row>
+ <row><entry spanname="descr">Enables flexible macroblock ordering in the encoded bitstream. It is a technique
+used for restructuring the ordering of macroblocks in pictures. Applicable to the H264 encoder.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-video-h264-fmo-map-type">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE</constant>&nbsp;</entry>
+ <entry>enum&nbsp;v4l2_mpeg_video_h264_fmo_map_type</entry>
+ </row>
+ <row><entry spanname="descr">When using FMO, the map type divides the image in different scan patterns of macroblocks.
+Applicable to the H264 encoder.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_MAP_TYPE_INTERLEAVED_SLICES</constant>&nbsp;</entry>
+ <entry>Slices are interleaved one after other with macroblocks in run length order.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_MAP_TYPE_SCATTERED_SLICES</constant>&nbsp;</entry>
+ <entry>Scatters the macroblocks based on a mathematical function known to both encoder and decoder.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_MAP_TYPE_FOREGROUND_WITH_LEFT_OVER</constant>&nbsp;</entry>
+ <entry>Macroblocks arranged in rectangular areas or regions of interest.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_MAP_TYPE_BOX_OUT</constant>&nbsp;</entry>
+ <entry>Slice groups grow in a cyclic way from centre to outwards.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_MAP_TYPE_RASTER_SCAN</constant>&nbsp;</entry>
+ <entry>Slice groups grow in raster scan pattern from left to right.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_MAP_TYPE_WIPE_SCAN</constant>&nbsp;</entry>
+ <entry>Slice groups grow in wipe scan pattern from top to bottom.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_MAP_TYPE_EXPLICIT</constant>&nbsp;</entry>
+ <entry>User defined map type.</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_FMO_SLICE_GROUP</constant>&nbsp;</entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Number of slice groups in FMO.
+Applicable to the H264 encoder.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-video-h264-fmo-change-direction">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_FMO_CHANGE_DIRECTION</constant>&nbsp;</entry>
+ <entry>enum&nbsp;v4l2_mpeg_video_h264_fmo_change_dir</entry>
+ </row>
+ <row><entry spanname="descr">Specifies a direction of the slice group change for raster and wipe maps.
+Applicable to the H264 encoder.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_CHANGE_DIR_RIGHT</constant>&nbsp;</entry>
+ <entry>Raster scan or wipe right.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_FMO_CHANGE_DIR_LEFT</constant>&nbsp;</entry>
+ <entry>Reverse raster scan or wipe left.</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_FMO_CHANGE_RATE</constant>&nbsp;</entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Specifies the size of the first slice group for raster and wipe map.
+Applicable to the H264 encoder.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_FMO_RUN_LENGTH</constant>&nbsp;</entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Specifies the number of consecutive macroblocks for the interleaved map.
+Applicable to the H264 encoder.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_ASO</constant>&nbsp;</entry>
+ <entry>boolean</entry>
+ </row>
+ <row><entry spanname="descr">Enables arbitrary slice ordering in encoded bitstream.
+Applicable to the H264 encoder.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_ASO_SLICE_ORDER</constant>&nbsp;</entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">Specifies the slice order in ASO. Applicable to the H264 encoder.
+The supplied 32-bit integer is interpreted as follows (bit
+0 = least significant bit):</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry>Bit 0:15</entry>
+ <entry>Slice ID</entry>
+ </row>
+ <row>
+ <entry>Bit 16:32</entry>
+ <entry>Slice position or order</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING</constant>&nbsp;</entry>
+ <entry>boolean</entry>
+ </row>
+ <row><entry spanname="descr">Enables H264 hierarchical coding.
+Applicable to the H264 encoder.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row id="v4l2-mpeg-video-h264-hierarchical-coding-type">
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_TYPE</constant>&nbsp;</entry>
+ <entry>enum&nbsp;v4l2_mpeg_video_h264_hierarchical_coding_type</entry>
+ </row>
+ <row><entry spanname="descr">Specifies the hierarchical coding type.
+Applicable to the H264 encoder.
+Possible values are:</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_HIERARCHICAL_CODING_B</constant>&nbsp;</entry>
+ <entry>Hierarchical B coding.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_MPEG_VIDEO_H264_HIERARCHICAL_CODING_P</constant>&nbsp;</entry>
+ <entry>Hierarchical P coding.</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER</constant>&nbsp;</entry>
+ <entry>integer</entry>
+ </row>
+ <row><entry spanname="descr">Specifies the number of hierarchical coding layers.
+Applicable to the H264 encoder.</entry>
+ </row>
+
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER_QP</constant>&nbsp;</entry>
+ <entry>integer</entry>
+ </row><row><entry spanname="descr">Specifies a user defined QP for each layer. Applicable to the H264 encoder.
+The supplied 32-bit integer is interpreted as follows (bit
+0 = least significant bit):</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry>Bit 0:15</entry>
+ <entry>QP value</entry>
+ </row>
+ <row>
+ <entry>Bit 16:32</entry>
+ <entry>Layer number</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+
</tbody>
</tgroup>
</table>
@@ -3500,7 +3771,7 @@ This encodes up to 31 pre-defined programme types.</entry>
</row>
<row><entry spanname="descr">Sets the Programme Service name (PS_NAME) for transmission.
It is intended for static display on a receiver. It is the primary aid to listeners in programme service
-identification and selection. In Annex E of <xref linkend="en50067" />, the RDS specification,
+identification and selection. In Annex E of <xref linkend="iec62106" />, the RDS specification,
there is a full description of the correct character encoding for Programme Service name strings.
Also from RDS specification, PS is usually a single eight character text. However, it is also possible
to find receivers which can scroll strings sized as 8 x N characters. So, this control must be configured
@@ -3514,7 +3785,7 @@ with steps of 8 characters. The result is it must always contain a string with s
what is being broadcasted. RDS Radio Text can be applied when broadcaster wishes to transmit longer PS names,
programme-related information or any other text. In these cases, RadioText should be used in addition to
<constant>V4L2_CID_RDS_TX_PS_NAME</constant>. The encoding for Radio Text strings is also fully described
-in Annex E of <xref linkend="en50067" />. The length of Radio Text strings depends on which RDS Block is being
+in Annex E of <xref linkend="iec62106" />. The length of Radio Text strings depends on which RDS Block is being
used to transmit it, either 32 (2A block) or 64 (2B block). However, it is also possible
to find receivers which can scroll strings sized as 32 x N or 64 x N characters. So, this control must be configured
with steps of 32 or 64 characters. The result is it must always contain a string with size multiple of 32 or 64. </entry>
@@ -3645,7 +3916,7 @@ manually or automatically if set to zero. Unit, range and step are driver-specif
</table>
<para>For more details about RDS specification, refer to
-<xref linkend="en50067" /> document, from CENELEC.</para>
+<xref linkend="iec62106" /> document, from CENELEC.</para>
</section>
<section id="flash-controls">
@@ -3712,232 +3983,231 @@ interface and may change in the future.</para>
use case involving camera or individually.
</para>
- </section>
+ <table pgwide="1" frame="none" id="flash-control-id">
+ <title>Flash Control IDs</title>
+
+ <tgroup cols="4">
+ <colspec colname="c1" colwidth="1*" />
+ <colspec colname="c2" colwidth="6*" />
+ <colspec colname="c3" colwidth="2*" />
+ <colspec colname="c4" colwidth="6*" />
+ <spanspec namest="c1" nameend="c2" spanname="id" />
+ <spanspec namest="c2" nameend="c4" spanname="descr" />
+ <thead>
+ <row>
+ <entry spanname="id" align="left">ID</entry>
+ <entry align="left">Type</entry>
+ </row><row rowsep="1"><entry spanname="descr" align="left">Description</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_CLASS</constant></entry>
+ <entry>class</entry>
+ </row>
+ <row>
+ <entry spanname="descr">The FLASH class descriptor.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_LED_MODE</constant></entry>
+ <entry>menu</entry>
+ </row>
+ <row id="v4l2-flash-led-mode">
+ <entry spanname="descr">Defines the mode of the flash LED,
+ the high-power white LED attached to the flash controller.
+ Setting this control may not be possible in presence of
+ some faults. See V4L2_CID_FLASH_FAULT.</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_FLASH_LED_MODE_NONE</constant></entry>
+ <entry>Off.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FLASH_LED_MODE_FLASH</constant></entry>
+ <entry>Flash mode.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FLASH_LED_MODE_TORCH</constant></entry>
+ <entry>Torch mode. See V4L2_CID_FLASH_TORCH_INTENSITY.</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE_SOURCE</constant></entry>
+ <entry>menu</entry>
+ </row>
+ <row id="v4l2-flash-strobe-source"><entry
+ spanname="descr">Defines the source of the flash LED
+ strobe.</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_FLASH_STROBE_SOURCE_SOFTWARE</constant></entry>
+ <entry>The flash strobe is triggered by using
+ the V4L2_CID_FLASH_STROBE control.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FLASH_STROBE_SOURCE_EXTERNAL</constant></entry>
+ <entry>The flash strobe is triggered by an
+ external source. Typically this is a sensor,
+ which makes it possible to synchronises the
+ flash strobe start to exposure start.</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE</constant></entry>
+ <entry>button</entry>
+ </row>
+ <row>
+ <entry spanname="descr">Strobe flash. Valid when
+ V4L2_CID_FLASH_LED_MODE is set to
+ V4L2_FLASH_LED_MODE_FLASH and V4L2_CID_FLASH_STROBE_SOURCE
+ is set to V4L2_FLASH_STROBE_SOURCE_SOFTWARE. Setting this
+ control may not be possible in presence of some faults.
+ See V4L2_CID_FLASH_FAULT.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE_STOP</constant></entry>
+ <entry>button</entry>
+ </row>
+ <row><entry spanname="descr">Stop flash strobe immediately.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE_STATUS</constant></entry>
+ <entry>boolean</entry>
+ </row>
+ <row>
+ <entry spanname="descr">Strobe status: whether the flash
+ is strobing at the moment or not. This is a read-only
+ control.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_TIMEOUT</constant></entry>
+ <entry>integer</entry>
+ </row>
+ <row>
+ <entry spanname="descr">Hardware timeout for flash. The
+ flash strobe is stopped after this period of time has
+ passed from the start of the strobe.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_INTENSITY</constant></entry>
+ <entry>integer</entry>
+ </row>
+ <row>
+ <entry spanname="descr">Intensity of the flash strobe when
+ the flash LED is in flash mode
+ (V4L2_FLASH_LED_MODE_FLASH). The unit should be milliamps
+ (mA) if possible.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_TORCH_INTENSITY</constant></entry>
+ <entry>integer</entry>
+ </row>
+ <row>
+ <entry spanname="descr">Intensity of the flash LED in
+ torch mode (V4L2_FLASH_LED_MODE_TORCH). The unit should be
+ milliamps (mA) if possible. Setting this control may not
+ be possible in presence of some faults. See
+ V4L2_CID_FLASH_FAULT.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_INDICATOR_INTENSITY</constant></entry>
+ <entry>integer</entry>
+ </row>
+ <row>
+ <entry spanname="descr">Intensity of the indicator LED.
+ The indicator LED may be fully independent of the flash
+ LED. The unit should be microamps (uA) if possible.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_FAULT</constant></entry>
+ <entry>bitmask</entry>
+ </row>
+ <row>
+ <entry spanname="descr">Faults related to the flash. The
+ faults tell about specific problems in the flash chip
+ itself or the LEDs attached to it. Faults may prevent
+ further use of some of the flash controls. In particular,
+ V4L2_CID_FLASH_LED_MODE is set to V4L2_FLASH_LED_MODE_NONE
+ if the fault affects the flash LED. Exactly which faults
+ have such an effect is chip dependent. Reading the faults
+ resets the control and returns the chip to a usable state
+ if possible.</entry>
+ </row>
+ <row>
+ <entrytbl spanname="descr" cols="2">
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_FLASH_FAULT_OVER_VOLTAGE</constant></entry>
+ <entry>Flash controller voltage to the flash LED
+ has exceeded the limit specific to the flash
+ controller.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FLASH_FAULT_TIMEOUT</constant></entry>
+ <entry>The flash strobe was still on when
+ the timeout set by the user ---
+ V4L2_CID_FLASH_TIMEOUT control --- has expired.
+ Not all flash controllers may set this in all
+ such conditions.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FLASH_FAULT_OVER_TEMPERATURE</constant></entry>
+ <entry>The flash controller has overheated.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FLASH_FAULT_SHORT_CIRCUIT</constant></entry>
+ <entry>The short circuit protection of the flash
+ controller has been triggered.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FLASH_FAULT_OVER_CURRENT</constant></entry>
+ <entry>Current in the LED power supply has exceeded the limit
+ specific to the flash controller.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_FLASH_FAULT_INDICATOR</constant></entry>
+ <entry>The flash controller has detected a short or open
+ circuit condition on the indicator LED.</entry>
+ </row>
+ </tbody>
+ </entrytbl>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_CHARGE</constant></entry>
+ <entry>boolean</entry>
+ </row>
+ <row><entry spanname="descr">Enable or disable charging of the xenon
+ flash capacitor.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_FLASH_READY</constant></entry>
+ <entry>boolean</entry>
+ </row>
+ <row>
+ <entry spanname="descr">Is the flash ready to strobe?
+ Xenon flashes require their capacitors charged before
+ strobing. LED flashes often require a cooldown period
+ after strobe during which another strobe will not be
+ possible. This is a read-only control.</entry>
+ </row>
+ <row><entry></entry></row>
+ </tbody>
+ </tgroup>
+ </table>
+ </section>
</section>
-
- <table pgwide="1" frame="none" id="flash-control-id">
- <title>Flash Control IDs</title>
-
- <tgroup cols="4">
- <colspec colname="c1" colwidth="1*" />
- <colspec colname="c2" colwidth="6*" />
- <colspec colname="c3" colwidth="2*" />
- <colspec colname="c4" colwidth="6*" />
- <spanspec namest="c1" nameend="c2" spanname="id" />
- <spanspec namest="c2" nameend="c4" spanname="descr" />
- <thead>
- <row>
- <entry spanname="id" align="left">ID</entry>
- <entry align="left">Type</entry>
- </row><row rowsep="1"><entry spanname="descr" align="left">Description</entry>
- </row>
- </thead>
- <tbody valign="top">
- <row><entry></entry></row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_FLASH_CLASS</constant></entry>
- <entry>class</entry>
- </row>
- <row>
- <entry spanname="descr">The FLASH class descriptor.</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_FLASH_LED_MODE</constant></entry>
- <entry>menu</entry>
- </row>
- <row id="v4l2-flash-led-mode">
- <entry spanname="descr">Defines the mode of the flash LED,
- the high-power white LED attached to the flash controller.
- Setting this control may not be possible in presence of
- some faults. See V4L2_CID_FLASH_FAULT.</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_FLASH_LED_MODE_NONE</constant></entry>
- <entry>Off.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FLASH_LED_MODE_FLASH</constant></entry>
- <entry>Flash mode.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FLASH_LED_MODE_TORCH</constant></entry>
- <entry>Torch mode. See V4L2_CID_FLASH_TORCH_INTENSITY.</entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE_SOURCE</constant></entry>
- <entry>menu</entry>
- </row>
- <row id="v4l2-flash-strobe-source"><entry
- spanname="descr">Defines the source of the flash LED
- strobe.</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_FLASH_STROBE_SOURCE_SOFTWARE</constant></entry>
- <entry>The flash strobe is triggered by using
- the V4L2_CID_FLASH_STROBE control.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FLASH_STROBE_SOURCE_EXTERNAL</constant></entry>
- <entry>The flash strobe is triggered by an
- external source. Typically this is a sensor,
- which makes it possible to synchronises the
- flash strobe start to exposure start.</entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE</constant></entry>
- <entry>button</entry>
- </row>
- <row>
- <entry spanname="descr">Strobe flash. Valid when
- V4L2_CID_FLASH_LED_MODE is set to
- V4L2_FLASH_LED_MODE_FLASH and V4L2_CID_FLASH_STROBE_SOURCE
- is set to V4L2_FLASH_STROBE_SOURCE_SOFTWARE. Setting this
- control may not be possible in presence of some faults.
- See V4L2_CID_FLASH_FAULT.</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE_STOP</constant></entry>
- <entry>button</entry>
- </row>
- <row><entry spanname="descr">Stop flash strobe immediately.</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_FLASH_STROBE_STATUS</constant></entry>
- <entry>boolean</entry>
- </row>
- <row>
- <entry spanname="descr">Strobe status: whether the flash
- is strobing at the moment or not. This is a read-only
- control.</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_FLASH_TIMEOUT</constant></entry>
- <entry>integer</entry>
- </row>
- <row>
- <entry spanname="descr">Hardware timeout for flash. The
- flash strobe is stopped after this period of time has
- passed from the start of the strobe.</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_FLASH_INTENSITY</constant></entry>
- <entry>integer</entry>
- </row>
- <row>
- <entry spanname="descr">Intensity of the flash strobe when
- the flash LED is in flash mode
- (V4L2_FLASH_LED_MODE_FLASH). The unit should be milliamps
- (mA) if possible.</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_FLASH_TORCH_INTENSITY</constant></entry>
- <entry>integer</entry>
- </row>
- <row>
- <entry spanname="descr">Intensity of the flash LED in
- torch mode (V4L2_FLASH_LED_MODE_TORCH). The unit should be
- milliamps (mA) if possible. Setting this control may not
- be possible in presence of some faults. See
- V4L2_CID_FLASH_FAULT.</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_FLASH_INDICATOR_INTENSITY</constant></entry>
- <entry>integer</entry>
- </row>
- <row>
- <entry spanname="descr">Intensity of the indicator LED.
- The indicator LED may be fully independent of the flash
- LED. The unit should be microamps (uA) if possible.</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_FLASH_FAULT</constant></entry>
- <entry>bitmask</entry>
- </row>
- <row>
- <entry spanname="descr">Faults related to the flash. The
- faults tell about specific problems in the flash chip
- itself or the LEDs attached to it. Faults may prevent
- further use of some of the flash controls. In particular,
- V4L2_CID_FLASH_LED_MODE is set to V4L2_FLASH_LED_MODE_NONE
- if the fault affects the flash LED. Exactly which faults
- have such an effect is chip dependent. Reading the faults
- resets the control and returns the chip to a usable state
- if possible.</entry>
- </row>
- <row>
- <entrytbl spanname="descr" cols="2">
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_FLASH_FAULT_OVER_VOLTAGE</constant></entry>
- <entry>Flash controller voltage to the flash LED
- has exceeded the limit specific to the flash
- controller.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FLASH_FAULT_TIMEOUT</constant></entry>
- <entry>The flash strobe was still on when
- the timeout set by the user ---
- V4L2_CID_FLASH_TIMEOUT control --- has expired.
- Not all flash controllers may set this in all
- such conditions.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FLASH_FAULT_OVER_TEMPERATURE</constant></entry>
- <entry>The flash controller has overheated.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FLASH_FAULT_SHORT_CIRCUIT</constant></entry>
- <entry>The short circuit protection of the flash
- controller has been triggered.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FLASH_FAULT_OVER_CURRENT</constant></entry>
- <entry>Current in the LED power supply has exceeded the limit
- specific to the flash controller.</entry>
- </row>
- <row>
- <entry><constant>V4L2_FLASH_FAULT_INDICATOR</constant></entry>
- <entry>The flash controller has detected a short or open
- circuit condition on the indicator LED.</entry>
- </row>
- </tbody>
- </entrytbl>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_FLASH_CHARGE</constant></entry>
- <entry>boolean</entry>
- </row>
- <row><entry spanname="descr">Enable or disable charging of the xenon
- flash capacitor.</entry>
- </row>
- <row>
- <entry spanname="id"><constant>V4L2_CID_FLASH_READY</constant></entry>
- <entry>boolean</entry>
- </row>
- <row>
- <entry spanname="descr">Is the flash ready to strobe?
- Xenon flashes require their capacitors charged before
- strobing. LED flashes often require a cooldown period
- after strobe during which another strobe will not be
- possible. This is a read-only control.</entry>
- </row>
- <row><entry></entry></row>
- </tbody>
- </tgroup>
- </table>
</section>
<section id="jpeg-controls">
@@ -4263,6 +4533,177 @@ interface and may change in the future.</para>
pixels / second.
</entry>
</row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_TEST_PATTERN</constant></entry>
+ <entry>menu</entry>
+ </row>
+ <row id="v4l2-test-pattern">
+ <entry spanname="descr"> Some capture/display/sensor devices have
+ the capability to generate test pattern images. These hardware
+ specific test patterns can be used to test if a device is working
+ properly.</entry>
+ </row>
+ <row><entry></entry></row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ </section>
+
+ <section id="dv-controls">
+ <title>Digital Video Control Reference</title>
+
+ <note>
+ <title>Experimental</title>
+
+ <para>This is an <link
+ linkend="experimental">experimental</link> interface and may
+ change in the future.</para>
+ </note>
+
+ <para>
+ The Digital Video control class is intended to control receivers
+ and transmitters for <ulink url="http://en.wikipedia.org/wiki/Vga">VGA</ulink>,
+ <ulink url="http://en.wikipedia.org/wiki/Digital_Visual_Interface">DVI</ulink>
+ (Digital Visual Interface), HDMI (<xref linkend="hdmi" />) and DisplayPort (<xref linkend="dp" />).
+ These controls are generally expected to be private to the receiver or transmitter
+ subdevice that implements them, so they are only exposed on the
+ <filename>/dev/v4l-subdev*</filename> device node.
+ </para>
+
+ <para>Note that these devices can have multiple input or output pads which are
+ hooked up to e.g. HDMI connectors. Even though the subdevice will receive or
+ transmit video from/to only one of those pads, the other pads can still be
+ active when it comes to EDID (Extended Display Identification Data,
+ <xref linkend="vesaedid" />) and HDCP (High-bandwidth Digital Content
+ Protection System, <xref linkend="hdcp" />) processing, allowing the device
+ to do the fairly slow EDID/HDCP handling in advance. This allows for quick
+ switching between connectors.</para>
+
+ <para>These pads appear in several of the controls in this section as
+ bitmasks, one bit for each pad. Bit 0 corresponds to pad 0, bit 1 to pad 1,
+ etc. The maximum value of the control is the set of valid pads.</para>
+
+ <table pgwide="1" frame="none" id="dv-control-id">
+ <title>Digital Video Control IDs</title>
+
+ <tgroup cols="4">
+ <colspec colname="c1" colwidth="1*" />
+ <colspec colname="c2" colwidth="6*" />
+ <colspec colname="c3" colwidth="2*" />
+ <colspec colname="c4" colwidth="6*" />
+ <spanspec namest="c1" nameend="c2" spanname="id" />
+ <spanspec namest="c2" nameend="c4" spanname="descr" />
+ <thead>
+ <row>
+ <entry spanname="id" align="left">ID</entry>
+ <entry align="left">Type</entry>
+ </row><row rowsep="1"><entry spanname="descr" align="left">Description</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row><entry></entry></row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_DV_CLASS</constant></entry>
+ <entry>class</entry>
+ </row>
+ <row>
+ <entry spanname="descr">The Digital Video class descriptor.</entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_DV_TX_HOTPLUG</constant></entry>
+ <entry>bitmask</entry>
+ </row>
+ <row>
+ <entry spanname="descr">Many connectors have a hotplug pin which is high
+ if EDID information is available from the source. This control shows the
+ state of the hotplug pin as seen by the transmitter.
+ Each bit corresponds to an output pad on the transmitter. If an output pad
+ does not have an associated hotplug pin, then the bit for that pad will be 0.
+ This read-only control is applicable to DVI-D, HDMI and DisplayPort connectors.
+ </entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_DV_TX_RXSENSE</constant></entry>
+ <entry>bitmask</entry>
+ </row>
+ <row>
+ <entry spanname="descr">Rx Sense is the detection of pull-ups on the TMDS
+ clock lines. This normally means that the sink has left/entered standby (i.e.
+ the transmitter can sense that the receiver is ready to receive video).
+ Each bit corresponds to an output pad on the transmitter. If an output pad
+ does not have an associated Rx Sense, then the bit for that pad will be 0.
+ This read-only control is applicable to DVI-D and HDMI devices.
+ </entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_DV_TX_EDID_PRESENT</constant></entry>
+ <entry>bitmask</entry>
+ </row>
+ <row>
+ <entry spanname="descr">When the transmitter sees the hotplug signal from the
+ receiver it will attempt to read the EDID. If set, then the transmitter has read
+ at least the first block (= 128 bytes).
+ Each bit corresponds to an output pad on the transmitter. If an output pad
+ does not support EDIDs, then the bit for that pad will be 0.
+ This read-only control is applicable to VGA, DVI-A/D, HDMI and DisplayPort connectors.
+ </entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_DV_TX_MODE</constant></entry>
+ <entry id="v4l2-dv-tx-mode">enum v4l2_dv_tx_mode</entry>
+ </row>
+ <row>
+ <entry spanname="descr">HDMI transmitters can transmit in DVI-D mode (just video)
+ or in HDMI mode (video + audio + auxiliary data). This control selects which mode
+ to use: V4L2_DV_TX_MODE_DVI_D or V4L2_DV_TX_MODE_HDMI.
+ This control is applicable to HDMI connectors.
+ </entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_DV_TX_RGB_RANGE</constant></entry>
+ <entry id="v4l2-dv-rgb-range">enum v4l2_dv_rgb_range</entry>
+ </row>
+ <row>
+ <entry spanname="descr">Select the quantization range for RGB output. V4L2_DV_RANGE_AUTO
+ follows the RGB quantization range specified in the standard for the video interface
+ (ie. <xref linkend="cea861" /> for HDMI). V4L2_DV_RANGE_LIMITED and V4L2_DV_RANGE_FULL override the standard
+ to be compatible with sinks that have not implemented the standard correctly
+ (unfortunately quite common for HDMI and DVI-D). Full range allows all possible values to be
+ used whereas limited range sets the range to (16 &lt;&lt; (N-8)) - (235 &lt;&lt; (N-8))
+ where N is the number of bits per component.
+ This control is applicable to VGA, DVI-A/D, HDMI and DisplayPort connectors.
+ </entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_DV_RX_POWER_PRESENT</constant></entry>
+ <entry>bitmask</entry>
+ </row>
+ <row>
+ <entry spanname="descr">Detects whether the receiver receives power from the source
+ (e.g. HDMI carries 5V on one of the pins). This is often used to power an eeprom
+ which contains EDID information, such that the source can read the EDID even if
+ the sink is in standby/power off.
+ Each bit corresponds to an input pad on the transmitter. If an input pad
+ cannot detect whether power is present, then the bit for that pad will be 0.
+ This read-only control is applicable to DVI-D, HDMI and DisplayPort connectors.
+ </entry>
+ </row>
+ <row>
+ <entry spanname="id"><constant>V4L2_CID_DV_RX_RGB_RANGE</constant></entry>
+ <entry>enum v4l2_dv_rgb_range</entry>
+ </row>
+ <row>
+ <entry spanname="descr">Select the quantization range for RGB input. V4L2_DV_RANGE_AUTO
+ follows the RGB quantization range specified in the standard for the video interface
+ (ie. <xref linkend="cea861" /> for HDMI). V4L2_DV_RANGE_LIMITED and V4L2_DV_RANGE_FULL override the standard
+ to be compatible with sources that have not implemented the standard correctly
+ (unfortunately quite common for HDMI and DVI-D). Full range allows all possible values to be
+ used whereas limited range sets the range to (16 &lt;&lt; (N-8)) - (235 &lt;&lt; (N-8))
+ where N is the number of bits per component.
+ This control is applicable to VGA, DVI-A/D, HDMI and DisplayPort connectors.
+ </entry>
+ </row>
<row><entry></entry></row>
</tbody>
</tgroup>
diff --git a/Documentation/DocBook/media/v4l/dev-osd.xml b/Documentation/DocBook/media/v4l/dev-osd.xml
index 479d9433869..dd91d6134e8 100644
--- a/Documentation/DocBook/media/v4l/dev-osd.xml
+++ b/Documentation/DocBook/media/v4l/dev-osd.xml
@@ -1,13 +1,6 @@
<title>Video Output Overlay Interface</title>
<subtitle>Also known as On-Screen Display (OSD)</subtitle>
- <note>
- <title>Experimental</title>
-
- <para>This is an <link linkend="experimental">experimental</link>
-interface and may change in the future.</para>
- </note>
-
<para>Some video output devices can overlay a framebuffer image onto
the outgoing video signal. Applications can set up such an overlay
using this interface, which borrows structures and ioctls of the <link
diff --git a/Documentation/DocBook/media/v4l/dev-rds.xml b/Documentation/DocBook/media/v4l/dev-rds.xml
index 38883a419e6..be2f3373732 100644
--- a/Documentation/DocBook/media/v4l/dev-rds.xml
+++ b/Documentation/DocBook/media/v4l/dev-rds.xml
@@ -6,7 +6,7 @@ information, on an inaudible audio subcarrier of a radio program. This
interface is aimed at devices capable of receiving and/or transmitting RDS
information.</para>
- <para>For more information see the core RDS standard <xref linkend="en50067" />
+ <para>For more information see the core RDS standard <xref linkend="iec62106" />
and the RBDS standard <xref linkend="nrsc4" />.</para>
<para>Note that the RBDS standard as is used in the USA is almost identical
diff --git a/Documentation/DocBook/media/v4l/dev-subdev.xml b/Documentation/DocBook/media/v4l/dev-subdev.xml
index 4afcbbec5ed..d15aaf83f56 100644
--- a/Documentation/DocBook/media/v4l/dev-subdev.xml
+++ b/Documentation/DocBook/media/v4l/dev-subdev.xml
@@ -276,7 +276,7 @@
</para>
</section>
- <section>
+ <section id="v4l2-subdev-selections">
<title>Selections: cropping, scaling and composition</title>
<para>Many sub-devices support cropping frames on their input or output
@@ -290,8 +290,8 @@
size. Both the coordinates and sizes are expressed in pixels.</para>
<para>As for pad formats, drivers store try and active
- rectangles for the selection targets of ACTUAL type <xref
- linkend="v4l2-subdev-selection-targets">.</xref></para>
+ rectangles for the selection targets <xref
+ linkend="v4l2-selections-common" />.</para>
<para>On sink pads, cropping is applied relative to the
current pad format. The pad format represents the image size as
@@ -308,7 +308,7 @@
<para>Scaling support is optional. When supported by a subdev,
the crop rectangle on the subdev's sink pad is scaled to the
size configured using the &VIDIOC-SUBDEV-S-SELECTION; IOCTL
- using <constant>V4L2_SUBDEV_SEL_COMPOSE_ACTUAL</constant>
+ using <constant>V4L2_SEL_TGT_COMPOSE</constant>
selection target on the same pad. If the subdev supports scaling
but not composing, the top and left values are not used and must
always be set to zero.</para>
@@ -323,32 +323,32 @@
<para>The drivers should always use the closest possible
rectangle the user requests on all selection targets, unless
specifically told otherwise.
- <constant>V4L2_SUBDEV_SEL_FLAG_SIZE_GE</constant> and
- <constant>V4L2_SUBDEV_SEL_FLAG_SIZE_LE</constant> flags may be
+ <constant>V4L2_SEL_FLAG_GE</constant> and
+ <constant>V4L2_SEL_FLAG_LE</constant> flags may be
used to round the image size either up or down. <xref
- linkend="v4l2-subdev-selection-flags"></xref></para>
+ linkend="v4l2-selection-flags" /></para>
</section>
<section>
<title>Types of selection targets</title>
<section>
- <title>ACTUAL targets</title>
+ <title>Actual targets</title>
- <para>ACTUAL targets reflect the actual hardware configuration
- at any point of time. There is a BOUNDS target
- corresponding to every ACTUAL.</para>
+ <para>Actual targets (without a postfix) reflect the actual
+ hardware configuration at any point of time. There is a BOUNDS
+ target corresponding to every actual target.</para>
</section>
<section>
<title>BOUNDS targets</title>
- <para>BOUNDS targets is the smallest rectangle that contains
- all valid ACTUAL rectangles. It may not be possible to set the
- ACTUAL rectangle as large as the BOUNDS rectangle, however.
- This may be because e.g. a sensor's pixel array is not
- rectangular but cross-shaped or round. The maximum size may
- also be smaller than the BOUNDS rectangle.</para>
+ <para>BOUNDS targets is the smallest rectangle that contains all
+ valid actual rectangles. It may not be possible to set the actual
+ rectangle as large as the BOUNDS rectangle, however. This may be
+ because e.g. a sensor's pixel array is not rectangular but
+ cross-shaped or round. The maximum size may also be smaller than the
+ BOUNDS rectangle.</para>
</section>
</section>
@@ -362,7 +362,7 @@
performed by the user: the changes made will be propagated to
any subsequent stages. If this behaviour is not desired, the
user must set
- <constant>V4L2_SUBDEV_SEL_FLAG_KEEP_CONFIG</constant> flag. This
+ <constant>V4L2_SEL_FLAG_KEEP_CONFIG</constant> flag. This
flag causes no propagation of the changes are allowed in any
circumstances. This may also cause the accessed rectangle to be
adjusted by the driver, depending on the properties of the
@@ -374,29 +374,29 @@
rectangle --- if it is supported by the hardware.</para>
<orderedlist>
- <listitem>Sink pad format. The user configures the sink pad
+ <listitem><para>Sink pad format. The user configures the sink pad
format. This format defines the parameters of the image the
- entity receives through the pad for further processing.</listitem>
+ entity receives through the pad for further processing.</para></listitem>
- <listitem>Sink pad actual crop selection. The sink pad crop
- defines the crop performed to the sink pad format.</listitem>
+ <listitem><para>Sink pad actual crop selection. The sink pad crop
+ defines the crop performed to the sink pad format.</para></listitem>
- <listitem>Sink pad actual compose selection. The size of the
+ <listitem><para>Sink pad actual compose selection. The size of the
sink pad compose rectangle defines the scaling ratio compared
to the size of the sink pad crop rectangle. The location of
the compose rectangle specifies the location of the actual
sink compose rectangle in the sink compose bounds
- rectangle.</listitem>
+ rectangle.</para></listitem>
- <listitem>Source pad actual crop selection. Crop on the source
+ <listitem><para>Source pad actual crop selection. Crop on the source
pad defines crop performed to the image in the sink compose
- bounds rectangle.</listitem>
+ bounds rectangle.</para></listitem>
- <listitem>Source pad format. The source pad format defines the
+ <listitem><para>Source pad format. The source pad format defines the
output pixel format of the subdev, as well as the other
parameters with the exception of the image width and height.
Width and height are defined by the size of the source pad
- actual crop selection.</listitem>
+ actual crop selection.</para></listitem>
</orderedlist>
<para>Accessing any of the above rectangles not supported by the
diff --git a/Documentation/DocBook/media/v4l/driver.xml b/Documentation/DocBook/media/v4l/driver.xml
index eacafe312cd..7c6638baced 100644
--- a/Documentation/DocBook/media/v4l/driver.xml
+++ b/Documentation/DocBook/media/v4l/driver.xml
@@ -116,7 +116,7 @@ my_suspend (struct pci_dev * pci_dev,
return 0; /* a negative value on error, 0 on success. */
}
-static void __devexit
+static void
my_remove (struct pci_dev * pci_dev)
{
my_device *my = pci_get_drvdata (pci_dev);
@@ -124,7 +124,7 @@ my_remove (struct pci_dev * pci_dev)
/* Describe me. */
}
-static int __devinit
+static int
my_probe (struct pci_dev * pci_dev,
const struct pci_device_id * pci_id)
{
@@ -157,7 +157,7 @@ my_pci_driver = {
.id_table = my_pci_device_ids,
.probe = my_probe,
- .remove = __devexit_p (my_remove),
+ .remove = my_remove,
/* Power management functions. */
.suspend = my_suspend,
diff --git a/Documentation/DocBook/media/v4l/gen-errors.xml b/Documentation/DocBook/media/v4l/gen-errors.xml
index 5bbf3ce1973..7e29a4e1f69 100644
--- a/Documentation/DocBook/media/v4l/gen-errors.xml
+++ b/Documentation/DocBook/media/v4l/gen-errors.xml
@@ -7,6 +7,15 @@
<tbody valign="top">
<!-- Keep it ordered alphabetically -->
<row>
+ <entry>EAGAIN (aka EWOULDBLOCK)</entry>
+ <entry>The ioctl can't be handled because the device is in state where
+ it can't perform it. This could happen for example in case where
+ device is sleeping and ioctl is performed to query statistics.
+ It is also returned when the ioctl would need to wait
+ for an event, but the device was opened in non-blocking mode.
+ </entry>
+ </row>
+ <row>
<entry>EBADF</entry>
<entry>The file descriptor is not a valid.</entry>
</row>
@@ -51,21 +60,11 @@
for periodic transfers (up to 80% of the USB bandwidth).</entry>
</row>
<row>
- <entry>ENOSYS or EOPNOTSUPP</entry>
- <entry>Function not available for this device (dvb API only. Will likely
- be replaced anytime soon by ENOTTY).</entry>
- </row>
- <row>
<entry>EPERM</entry>
<entry>Permission denied. Can be returned if the device needs write
permission, or some special capabilities is needed
(e. g. root)</entry>
</row>
- <row>
- <entry>EWOULDBLOCK</entry>
- <entry>Operation would block. Used when the ioctl would need to wait
- for an event, but the device was opened in non-blocking mode.</entry>
- </row>
</tbody>
</tgroup>
</table>
diff --git a/Documentation/DocBook/media/v4l/io.xml b/Documentation/DocBook/media/v4l/io.xml
index fd6aca2922b..388a3403265 100644
--- a/Documentation/DocBook/media/v4l/io.xml
+++ b/Documentation/DocBook/media/v4l/io.xml
@@ -331,7 +331,7 @@ application until one or more buffers can be dequeued. By default
outgoing queue. When the <constant>O_NONBLOCK</constant> flag was
given to the &func-open; function, <constant>VIDIOC_DQBUF</constant>
returns immediately with an &EAGAIN; when no buffer is available. The
-&func-select; or &func-poll; function are always available.</para>
+&func-select; or &func-poll; functions are always available.</para>
<para>To start and stop capturing or output applications call the
&VIDIOC-STREAMON; and &VIDIOC-STREAMOFF; ioctl. Note
@@ -472,6 +472,165 @@ rest should be evident.</para>
</footnote></para>
</section>
+ <section id="dmabuf">
+ <title>Streaming I/O (DMA buffer importing)</title>
+
+ <note>
+ <title>Experimental</title>
+ <para>This is an <link linkend="experimental"> experimental </link>
+ interface and may change in the future.</para>
+ </note>
+
+<para>The DMABUF framework provides a generic method for sharing buffers
+between multiple devices. Device drivers that support DMABUF can export a DMA
+buffer to userspace as a file descriptor (known as the exporter role), import a
+DMA buffer from userspace using a file descriptor previously exported for a
+different or the same device (known as the importer role), or both. This
+section describes the DMABUF importer role API in V4L2.</para>
+
+ <para>Refer to <link linked="vidioc-expbuf"> DMABUF exporting </link> for
+details about exporting V4L2 buffers as DMABUF file descriptors.</para>
+
+<para>Input and output devices support the streaming I/O method when the
+<constant>V4L2_CAP_STREAMING</constant> flag in the
+<structfield>capabilities</structfield> field of &v4l2-capability; returned by
+the &VIDIOC-QUERYCAP; ioctl is set. Whether importing DMA buffers through
+DMABUF file descriptors is supported is determined by calling the
+&VIDIOC-REQBUFS; ioctl with the memory type set to
+<constant>V4L2_MEMORY_DMABUF</constant>.</para>
+
+ <para>This I/O method is dedicated to sharing DMA buffers between different
+devices, which may be V4L devices or other video-related devices (e.g. DRM).
+Buffers (planes) are allocated by a driver on behalf of an application. Next,
+these buffers are exported to the application as file descriptors using an API
+which is specific for an allocator driver. Only such file descriptor are
+exchanged. The descriptors and meta-information are passed in &v4l2-buffer; (or
+in &v4l2-plane; in the multi-planar API case). The driver must be switched
+into DMABUF I/O mode by calling the &VIDIOC-REQBUFS; with the desired buffer
+type.</para>
+
+ <example>
+ <title>Initiating streaming I/O with DMABUF file descriptors</title>
+
+ <programlisting>
+&v4l2-requestbuffers; reqbuf;
+
+memset(&amp;reqbuf, 0, sizeof (reqbuf));
+reqbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+reqbuf.memory = V4L2_MEMORY_DMABUF;
+reqbuf.count = 1;
+
+if (ioctl(fd, &VIDIOC-REQBUFS;, &amp;reqbuf) == -1) {
+ if (errno == EINVAL)
+ printf("Video capturing or DMABUF streaming is not supported\n");
+ else
+ perror("VIDIOC_REQBUFS");
+
+ exit(EXIT_FAILURE);
+}
+ </programlisting>
+ </example>
+
+ <para>The buffer (plane) file descriptor is passed on the fly with the
+&VIDIOC-QBUF; ioctl. In case of multiplanar buffers, every plane can be
+associated with a different DMABUF descriptor. Although buffers are commonly
+cycled, applications can pass a different DMABUF descriptor at each
+<constant>VIDIOC_QBUF</constant> call.</para>
+
+ <example>
+ <title>Queueing DMABUF using single plane API</title>
+
+ <programlisting>
+int buffer_queue(int v4lfd, int index, int dmafd)
+{
+ &v4l2-buffer; buf;
+
+ memset(&amp;buf, 0, sizeof buf);
+ buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ buf.memory = V4L2_MEMORY_DMABUF;
+ buf.index = index;
+ buf.m.fd = dmafd;
+
+ if (ioctl(v4lfd, &VIDIOC-QBUF;, &amp;buf) == -1) {
+ perror("VIDIOC_QBUF");
+ return -1;
+ }
+
+ return 0;
+}
+ </programlisting>
+ </example>
+
+ <example>
+ <title>Queueing DMABUF using multi plane API</title>
+
+ <programlisting>
+int buffer_queue_mp(int v4lfd, int index, int dmafd[], int n_planes)
+{
+ &v4l2-buffer; buf;
+ &v4l2-plane; planes[VIDEO_MAX_PLANES];
+ int i;
+
+ memset(&amp;buf, 0, sizeof buf);
+ buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
+ buf.memory = V4L2_MEMORY_DMABUF;
+ buf.index = index;
+ buf.m.planes = planes;
+ buf.length = n_planes;
+
+ memset(&amp;planes, 0, sizeof planes);
+
+ for (i = 0; i &lt; n_planes; ++i)
+ buf.m.planes[i].m.fd = dmafd[i];
+
+ if (ioctl(v4lfd, &VIDIOC-QBUF;, &amp;buf) == -1) {
+ perror("VIDIOC_QBUF");
+ return -1;
+ }
+
+ return 0;
+}
+ </programlisting>
+ </example>
+
+ <para>Captured or displayed buffers are dequeued with the
+&VIDIOC-DQBUF; ioctl. The driver can unlock the buffer at any
+time between the completion of the DMA and this ioctl. The memory is
+also unlocked when &VIDIOC-STREAMOFF; is called, &VIDIOC-REQBUFS;, or
+when the device is closed.</para>
+
+ <para>For capturing applications it is customary to enqueue a
+number of empty buffers, to start capturing and enter the read loop.
+Here the application waits until a filled buffer can be dequeued, and
+re-enqueues the buffer when the data is no longer needed. Output
+applications fill and enqueue buffers, when enough buffers are stacked
+up output is started. In the write loop, when the application
+runs out of free buffers it must wait until an empty buffer can be
+dequeued and reused. Two methods exist to suspend execution of the
+application until one or more buffers can be dequeued. By default
+<constant>VIDIOC_DQBUF</constant> blocks when no buffer is in the
+outgoing queue. When the <constant>O_NONBLOCK</constant> flag was
+given to the &func-open; function, <constant>VIDIOC_DQBUF</constant>
+returns immediately with an &EAGAIN; when no buffer is available. The
+&func-select; and &func-poll; functions are always available.</para>
+
+ <para>To start and stop capturing or displaying applications call the
+&VIDIOC-STREAMON; and &VIDIOC-STREAMOFF; ioctls. Note that
+<constant>VIDIOC_STREAMOFF</constant> removes all buffers from both queues and
+unlocks all buffers as a side effect. Since there is no notion of doing
+anything "now" on a multitasking system, if an application needs to synchronize
+with another event it should examine the &v4l2-buffer;
+<structfield>timestamp</structfield> of captured buffers, or set the field
+before enqueuing buffers for output.</para>
+
+ <para>Drivers implementing DMABUF importing I/O must support the
+<constant>VIDIOC_REQBUFS</constant>, <constant>VIDIOC_QBUF</constant>,
+<constant>VIDIOC_DQBUF</constant>, <constant>VIDIOC_STREAMON</constant> and
+<constant>VIDIOC_STREAMOFF</constant> ioctls, and the
+<function>select()</function> and <function>poll()</function> functions.</para>
+
+ </section>
+
<section id="async">
<title>Asynchronous I/O</title>
@@ -613,8 +772,8 @@ field is independent of the <structfield>timestamp</structfield> and
<entry>__u32</entry>
<entry><structfield>sequence</structfield></entry>
<entry></entry>
- <entry>Set by the driver, counting the frames in the
-sequence.</entry>
+ <entry>Set by the driver, counting the frames (not fields!) in
+sequence. This field is set for both input and output devices.</entry>
</row>
<row>
<entry spanname="hspan"><para>In <link
@@ -673,32 +832,36 @@ memory, set by the application. See <xref linkend="userp" /> for details.
<structname>v4l2_buffer</structname> structure.</entry>
</row>
<row>
+ <entry></entry>
+ <entry>int</entry>
+ <entry><structfield>fd</structfield></entry>
+ <entry>For the single-plane API and when
+<structfield>memory</structfield> is <constant>V4L2_MEMORY_DMABUF</constant> this
+is the file descriptor associated with a DMABUF buffer.</entry>
+ </row>
+ <row>
<entry>__u32</entry>
<entry><structfield>length</structfield></entry>
<entry></entry>
<entry>Size of the buffer (not the payload) in bytes for the
- single-planar API. For the multi-planar API should contain the
- number of elements in the <structfield>planes</structfield> array.
+ single-planar API. For the multi-planar API the application sets
+ this to the number of elements in the <structfield>planes</structfield>
+ array. The driver will fill in the actual number of valid elements in
+ that array.
</entry>
</row>
<row>
<entry>__u32</entry>
- <entry><structfield>input</structfield></entry>
+ <entry><structfield>reserved2</structfield></entry>
<entry></entry>
- <entry>Some video capture drivers support rapid and
-synchronous video input changes, a function useful for example in
-video surveillance applications. For this purpose applications set the
-<constant>V4L2_BUF_FLAG_INPUT</constant> flag, and this field to the
-number of a video input as in &v4l2-input; field
-<structfield>index</structfield>.</entry>
+ <entry>A place holder for future extensions. Applications
+should set this to 0.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>reserved</structfield></entry>
<entry></entry>
- <entry>A place holder for future extensions and custom
-(driver defined) buffer types
-<constant>V4L2_BUF_TYPE_PRIVATE</constant> and higher. Applications
+ <entry>A place holder for future extensions. Applications
should set this to 0.</entry>
</row>
</tbody>
@@ -748,6 +911,15 @@ should set this to 0.</entry>
</entry>
</row>
<row>
+ <entry></entry>
+ <entry>int</entry>
+ <entry><structfield>fd</structfield></entry>
+ <entry>When the memory type in the containing &v4l2-buffer; is
+ <constant>V4L2_MEMORY_DMABUF</constant>, this is a file
+ descriptor associated with a DMABUF buffer, similar to the
+ <structfield>fd</structfield> field in &v4l2-buffer;.</entry>
+ </row>
+ <row>
<entry>__u32</entry>
<entry><structfield>data_offset</structfield></entry>
<entry></entry>
@@ -829,14 +1001,7 @@ should set this to 0.</entry>
<entry><constant>V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY</constant></entry>
<entry>8</entry>
<entry>Buffer for video output overlay (OSD), see <xref
- linkend="osd" />. Status: <link
-linkend="experimental">Experimental</link>.</entry>
- </row>
- <row>
- <entry><constant>V4L2_BUF_TYPE_PRIVATE</constant></entry>
- <entry>0x80</entry>
- <entry>This and higher values are reserved for custom
-(driver defined) buffer types.</entry>
+ linkend="osd" />.</entry>
</row>
</tbody>
</tgroup>
@@ -923,13 +1088,6 @@ Drivers set or clear this flag when the <constant>VIDIOC_DQBUF</constant>
ioctl is called.</entry>
</row>
<row>
- <entry><constant>V4L2_BUF_FLAG_INPUT</constant></entry>
- <entry>0x0200</entry>
- <entry>The <structfield>input</structfield> field is valid.
-Applications set or clear this flag before calling the
-<constant>VIDIOC_QBUF</constant> ioctl.</entry>
- </row>
- <row>
<entry><constant>V4L2_BUF_FLAG_PREPARED</constant></entry>
<entry>0x0400</entry>
<entry>The buffer has been prepared for I/O and can be queued by the
@@ -941,7 +1099,7 @@ application. Drivers set or clear this flag when the
</row>
<row>
<entry><constant>V4L2_BUF_FLAG_NO_CACHE_INVALIDATE</constant></entry>
- <entry>0x0400</entry>
+ <entry>0x0800</entry>
<entry>Caches do not have to be invalidated for this buffer.
Typically applications shall use this flag if the data captured in the buffer
is not going to be touched by the CPU, instead the buffer will, probably, be
@@ -950,7 +1108,7 @@ passed on to a DMA-capable hardware unit for further processing or output.
</row>
<row>
<entry><constant>V4L2_BUF_FLAG_NO_CACHE_CLEAN</constant></entry>
- <entry>0x0800</entry>
+ <entry>0x1000</entry>
<entry>Caches do not have to be cleaned for this buffer.
Typically applications shall use this flag for output buffers if the data
in this buffer has not been created by the CPU but by some DMA-capable unit,
@@ -982,6 +1140,12 @@ pointer</link> I/O.</entry>
<entry>3</entry>
<entry>[to do]</entry>
</row>
+ <row>
+ <entry><constant>V4L2_MEMORY_DMABUF</constant></entry>
+ <entry>4</entry>
+ <entry>The buffer is used for <link linkend="dmabuf">DMA shared
+buffer</link> I/O.</entry>
+ </row>
</tbody>
</tgroup>
</table>
diff --git a/Documentation/DocBook/media/v4l/pixfmt-nv12m.xml b/Documentation/DocBook/media/v4l/pixfmt-nv12m.xml
index 5274c24d11e..a990b34d911 100644
--- a/Documentation/DocBook/media/v4l/pixfmt-nv12m.xml
+++ b/Documentation/DocBook/media/v4l/pixfmt-nv12m.xml
@@ -1,11 +1,13 @@
- <refentry id="V4L2-PIX-FMT-NV12M">
+ <refentry>
<refmeta>
- <refentrytitle>V4L2_PIX_FMT_NV12M ('NM12')</refentrytitle>
+ <refentrytitle>V4L2_PIX_FMT_NV12M ('NM12'), V4L2_PIX_FMT_NV21M ('NM21'), V4L2_PIX_FMT_NV12MT_16X16</refentrytitle>
&manvol;
</refmeta>
<refnamediv>
- <refname> <constant>V4L2_PIX_FMT_NV12M</constant></refname>
- <refpurpose>Variation of <constant>V4L2_PIX_FMT_NV12</constant> with planes
+ <refname id="V4L2-PIX-FMT-NV12M"><constant>V4L2_PIX_FMT_NV12M</constant></refname>
+ <refname id="V4L2-PIX-FMT-NV21M"><constant>V4L2_PIX_FMT_NV21M</constant></refname>
+ <refname id="V4L2-PIX-FMT-NV12MT_16X16"><constant>V4L2_PIX_FMT_NV12MT_16X16</constant></refname>
+ <refpurpose>Variation of <constant>V4L2_PIX_FMT_NV12</constant> and <constant>V4L2_PIX_FMT_NV21</constant> with planes
non contiguous in memory. </refpurpose>
</refnamediv>
<refsect1>
@@ -22,7 +24,12 @@ The CbCr plane is the same width, in bytes, as the Y plane (and of the image),
but is half as tall in pixels. Each CbCr pair belongs to four pixels. For example,
Cb<subscript>0</subscript>/Cr<subscript>0</subscript> belongs to
Y'<subscript>00</subscript>, Y'<subscript>01</subscript>,
-Y'<subscript>10</subscript>, Y'<subscript>11</subscript>. </para>
+Y'<subscript>10</subscript>, Y'<subscript>11</subscript>.
+<constant>V4L2_PIX_FMT_NV12MT_16X16</constant> is the tiled version of
+<constant>V4L2_PIX_FMT_NV12M</constant> with 16x16 macroblock tiles. Here pixels
+are arranged in 16x16 2D tiles and tiles are arranged in linear order in memory.
+<constant>V4L2_PIX_FMT_NV21M</constant> is the same as <constant>V4L2_PIX_FMT_NV12M</constant>
+except the Cb and Cr bytes are swapped, the CrCb plane starts with a Cr byte.</para>
<para><constant>V4L2_PIX_FMT_NV12M</constant> is intended to be
used only in drivers and applications that support the multi-planar API,
diff --git a/Documentation/DocBook/media/v4l/pixfmt-srggb10dpcm8.xml b/Documentation/DocBook/media/v4l/pixfmt-srggb10dpcm8.xml
index 8eace3e2e7d..2d3f0b1aefe 100644
--- a/Documentation/DocBook/media/v4l/pixfmt-srggb10dpcm8.xml
+++ b/Documentation/DocBook/media/v4l/pixfmt-srggb10dpcm8.xml
@@ -22,8 +22,7 @@
with 10 bits per colour compressed to 8 bits each, using DPCM
compression. DPCM, differential pulse-code modulation, is lossy.
Each colour component consumes 8 bits of memory. In other respects
- this format is similar to <xref
- linkend="pixfmt-srggb10">.</xref></para>
+ this format is similar to <xref linkend="pixfmt-srggb10" />.</para>
</refsect1>
</refentry>
diff --git a/Documentation/DocBook/media/v4l/pixfmt-yvu420m.xml b/Documentation/DocBook/media/v4l/pixfmt-yvu420m.xml
new file mode 100644
index 00000000000..2330667907c
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/pixfmt-yvu420m.xml
@@ -0,0 +1,154 @@
+ <refentry id="V4L2-PIX-FMT-YVU420M">
+ <refmeta>
+ <refentrytitle>V4L2_PIX_FMT_YVU420M ('YM21')</refentrytitle>
+ &manvol;
+ </refmeta>
+ <refnamediv>
+ <refname> <constant>V4L2_PIX_FMT_YVU420M</constant></refname>
+ <refpurpose>Variation of <constant>V4L2_PIX_FMT_YVU420</constant>
+ with planes non contiguous in memory. </refpurpose>
+ </refnamediv>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>This is a multi-planar format, as opposed to a packed format.
+The three components are separated into three sub-images or planes.
+
+The Y plane is first. The Y plane has one byte per pixel. The Cr data
+constitutes the second plane which is half the width and half
+the height of the Y plane (and of the image). Each Cr belongs to four
+pixels, a two-by-two square of the image. For example,
+Cr<subscript>0</subscript> belongs to Y'<subscript>00</subscript>,
+Y'<subscript>01</subscript>, Y'<subscript>10</subscript>, and
+Y'<subscript>11</subscript>. The Cb data, just like the Cr plane, constitutes
+the third plane. </para>
+
+ <para>If the Y plane has pad bytes after each row, then the Cr
+and Cb planes have half as many pad bytes after their rows. In other
+words, two Cx rows (including padding) is exactly as long as one Y row
+(including padding).</para>
+
+ <para><constant>V4L2_PIX_FMT_YVU420M</constant> is intended to be
+used only in drivers and applications that support the multi-planar API,
+described in <xref linkend="planar-apis"/>. </para>
+
+ <example>
+ <title><constant>V4L2_PIX_FMT_YVU420M</constant> 4 &times; 4
+pixel image</title>
+
+ <formalpara>
+ <title>Byte Order.</title>
+ <para>Each cell is one byte.
+ <informaltable frame="none">
+ <tgroup cols="5" align="center">
+ <colspec align="left" colwidth="2*" />
+ <tbody valign="top">
+ <row>
+ <entry>start0&nbsp;+&nbsp;0:</entry>
+ <entry>Y'<subscript>00</subscript></entry>
+ <entry>Y'<subscript>01</subscript></entry>
+ <entry>Y'<subscript>02</subscript></entry>
+ <entry>Y'<subscript>03</subscript></entry>
+ </row>
+ <row>
+ <entry>start0&nbsp;+&nbsp;4:</entry>
+ <entry>Y'<subscript>10</subscript></entry>
+ <entry>Y'<subscript>11</subscript></entry>
+ <entry>Y'<subscript>12</subscript></entry>
+ <entry>Y'<subscript>13</subscript></entry>
+ </row>
+ <row>
+ <entry>start0&nbsp;+&nbsp;8:</entry>
+ <entry>Y'<subscript>20</subscript></entry>
+ <entry>Y'<subscript>21</subscript></entry>
+ <entry>Y'<subscript>22</subscript></entry>
+ <entry>Y'<subscript>23</subscript></entry>
+ </row>
+ <row>
+ <entry>start0&nbsp;+&nbsp;12:</entry>
+ <entry>Y'<subscript>30</subscript></entry>
+ <entry>Y'<subscript>31</subscript></entry>
+ <entry>Y'<subscript>32</subscript></entry>
+ <entry>Y'<subscript>33</subscript></entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry>start1&nbsp;+&nbsp;0:</entry>
+ <entry>Cr<subscript>00</subscript></entry>
+ <entry>Cr<subscript>01</subscript></entry>
+ </row>
+ <row>
+ <entry>start1&nbsp;+&nbsp;2:</entry>
+ <entry>Cr<subscript>10</subscript></entry>
+ <entry>Cr<subscript>11</subscript></entry>
+ </row>
+ <row><entry></entry></row>
+ <row>
+ <entry>start2&nbsp;+&nbsp;0:</entry>
+ <entry>Cb<subscript>00</subscript></entry>
+ <entry>Cb<subscript>01</subscript></entry>
+ </row>
+ <row>
+ <entry>start2&nbsp;+&nbsp;2:</entry>
+ <entry>Cb<subscript>10</subscript></entry>
+ <entry>Cb<subscript>11</subscript></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </informaltable>
+ </para>
+ </formalpara>
+
+ <formalpara>
+ <title>Color Sample Location.</title>
+ <para>
+ <informaltable frame="none">
+ <tgroup cols="7" align="center">
+ <tbody valign="top">
+ <row>
+ <entry></entry>
+ <entry>0</entry><entry></entry><entry>1</entry><entry></entry>
+ <entry>2</entry><entry></entry><entry>3</entry>
+ </row>
+ <row>
+ <entry>0</entry>
+ <entry>Y</entry><entry></entry><entry>Y</entry><entry></entry>
+ <entry>Y</entry><entry></entry><entry>Y</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry><entry>C</entry><entry></entry><entry></entry>
+ <entry></entry><entry>C</entry><entry></entry>
+ </row>
+ <row>
+ <entry>1</entry>
+ <entry>Y</entry><entry></entry><entry>Y</entry><entry></entry>
+ <entry>Y</entry><entry></entry><entry>Y</entry>
+ </row>
+ <row>
+ <entry></entry>
+ </row>
+ <row>
+ <entry>2</entry>
+ <entry>Y</entry><entry></entry><entry>Y</entry><entry></entry>
+ <entry>Y</entry><entry></entry><entry>Y</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry><entry>C</entry><entry></entry><entry></entry>
+ <entry></entry><entry>C</entry><entry></entry>
+ </row>
+ <row>
+ <entry>3</entry>
+ <entry>Y</entry><entry></entry><entry>Y</entry><entry></entry>
+ <entry>Y</entry><entry></entry><entry>Y</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </informaltable>
+ </para>
+ </formalpara>
+ </example>
+ </refsect1>
+ </refentry>
diff --git a/Documentation/DocBook/media/v4l/pixfmt.xml b/Documentation/DocBook/media/v4l/pixfmt.xml
index e58934c9289..bf94f417592 100644
--- a/Documentation/DocBook/media/v4l/pixfmt.xml
+++ b/Documentation/DocBook/media/v4l/pixfmt.xml
@@ -708,6 +708,7 @@ information.</para>
&sub-y41p;
&sub-yuv420;
&sub-yuv420m;
+ &sub-yvu420m;
&sub-yuv410;
&sub-yuv422p;
&sub-yuv411p;
@@ -757,6 +758,11 @@ extended control <constant>V4L2_CID_MPEG_STREAM_TYPE</constant>, see
<entry>'AVC1'</entry>
<entry>H264 video elementary stream without start codes.</entry>
</row>
+ <row id="V4L2-PIX-FMT-H264-MVC">
+ <entry><constant>V4L2_PIX_FMT_H264_MVC</constant></entry>
+ <entry>'MVC'</entry>
+ <entry>H264 MVC video elementary stream.</entry>
+ </row>
<row id="V4L2-PIX-FMT-H263">
<entry><constant>V4L2_PIX_FMT_H263</constant></entry>
<entry>'H263'</entry>
@@ -792,6 +798,11 @@ extended control <constant>V4L2_CID_MPEG_STREAM_TYPE</constant>, see
<entry>'VC1L'</entry>
<entry>VC1, SMPTE 421M Annex L compliant stream.</entry>
</row>
+ <row id="V4L2-PIX-FMT-VP8">
+ <entry><constant>V4L2_PIX_FMT_VP8</constant></entry>
+ <entry>'VP8'</entry>
+ <entry>VP8 video elementary stream.</entry>
+ </row>
</tbody>
</tgroup>
</table>
@@ -995,6 +1006,34 @@ the other bits are set to 0.</entry>
<entry>Old 6-bit greyscale format. Only the most significant 6 bits of each byte are used,
the other bits are set to 0.</entry>
</row>
+ <row id="V4L2-PIX-FMT-S5C-UYVY-JPG">
+ <entry><constant>V4L2_PIX_FMT_S5C_UYVY_JPG</constant></entry>
+ <entry>'S5CI'</entry>
+ <entry>Two-planar format used by Samsung S5C73MX cameras. The
+first plane contains interleaved JPEG and UYVY image data, followed by meta data
+in form of an array of offsets to the UYVY data blocks. The actual pointer array
+follows immediately the interleaved JPEG/UYVY data, the number of entries in
+this array equals the height of the UYVY image. Each entry is a 4-byte unsigned
+integer in big endian order and it's an offset to a single pixel line of the
+UYVY image. The first plane can start either with JPEG or UYVY data chunk. The
+size of a single UYVY block equals the UYVY image's width multiplied by 2. The
+size of a JPEG chunk depends on the image and can vary with each line.
+<para>The second plane, at an offset of 4084 bytes, contains a 4-byte offset to
+the pointer array in the first plane. This offset is followed by a 4-byte value
+indicating size of the pointer array. All numbers in the second plane are also
+in big endian order. Remaining data in the second plane is undefined. The
+information in the second plane allows to easily find location of the pointer
+array, which can be different for each frame. The size of the pointer array is
+constant for given UYVY image height.</para>
+<para>In order to extract UYVY and JPEG frames an application can initially set
+a data pointer to the start of first plane and then add an offset from the first
+entry of the pointers table. Such a pointer indicates start of an UYVY image
+pixel line. Whole UYVY line can be copied to a separate buffer. These steps
+should be repeated for each line, i.e. the number of entries in the pointer
+array. Anything what's in between the UYVY lines is JPEG data and should be
+concatenated to form the JPEG stream. </para>
+</entry>
+ </row>
</tbody>
</tgroup>
</table>
diff --git a/Documentation/DocBook/media/v4l/selection-api.xml b/Documentation/DocBook/media/v4l/selection-api.xml
index b299e477935..4c238ce068b 100644
--- a/Documentation/DocBook/media/v4l/selection-api.xml
+++ b/Documentation/DocBook/media/v4l/selection-api.xml
@@ -40,6 +40,7 @@ cropping and composing rectangles have the same size.</para>
<section>
<title>Selection targets</title>
+ <para>
<figure id="sel-targets-capture">
<title>Cropping and composing targets</title>
<mediaobject>
@@ -52,10 +53,10 @@ cropping and composing rectangles have the same size.</para>
</textobject>
</mediaobject>
</figure>
+ </para>
-For complete list of the available selection targets see table <xref
-linkend="v4l2-sel-target"/>
-
+ <para>See <xref linkend="v4l2-selection-targets" /> for more
+ information.</para>
</section>
<section>
@@ -74,7 +75,7 @@ cropping/composing rectangles may have to be aligned, and both the source and
the sink may have arbitrary upper and lower size limits. Therefore, as usual,
drivers are expected to adjust the requested parameters and return the actual
values selected. An application can control the rounding behaviour using <link
-linkend="v4l2-sel-flags"> constraint flags </link>.</para>
+linkend="v4l2-selection-flags"> constraint flags </link>.</para>
<section>
@@ -91,7 +92,7 @@ top/left corner at position <constant> (0,0) </constant>. The rectangle's
coordinates are expressed in pixels.</para>
<para>The top left corner, width and height of the source rectangle, that is
-the area actually sampled, is given by the <constant> V4L2_SEL_TGT_CROP_ACTIVE
+the area actually sampled, is given by the <constant> V4L2_SEL_TGT_CROP
</constant> target. It uses the same coordinate system as <constant>
V4L2_SEL_TGT_CROP_BOUNDS </constant>. The active cropping area must lie
completely inside the capture boundaries. The driver may further adjust the
@@ -111,13 +112,13 @@ height are equal to the image size set by <constant> VIDIOC_S_FMT </constant>.
</para>
<para>The part of a buffer into which the image is inserted by the hardware is
-controlled by the <constant> V4L2_SEL_TGT_COMPOSE_ACTIVE </constant> target.
+controlled by the <constant> V4L2_SEL_TGT_COMPOSE </constant> target.
The rectangle's coordinates are also expressed in the same coordinate system as
the bounds rectangle. The composing rectangle must lie completely inside bounds
rectangle. The driver must adjust the composing rectangle to fit to the
bounding limits. Moreover, the driver can perform other adjustments according
to hardware limitations. The application can control rounding behaviour using
-<link linkend="v4l2-sel-flags"> constraint flags </link>.</para>
+<link linkend="v4l2-selection-flags"> constraint flags </link>.</para>
<para>For capture devices the default composing rectangle is queried using
<constant> V4L2_SEL_TGT_COMPOSE_DEFAULT </constant>. It is usually equal to the
@@ -125,7 +126,7 @@ bounding rectangle.</para>
<para>The part of a buffer that is modified by the hardware is given by
<constant> V4L2_SEL_TGT_COMPOSE_PADDED </constant>. It contains all pixels
-defined using <constant> V4L2_SEL_TGT_COMPOSE_ACTIVE </constant> plus all
+defined using <constant> V4L2_SEL_TGT_COMPOSE </constant> plus all
padding data modified by hardware during insertion process. All pixels outside
this rectangle <emphasis>must not</emphasis> be changed by the hardware. The
content of pixels that lie inside the padded area but outside active area is
@@ -153,7 +154,7 @@ specified using <constant> VIDIOC_S_FMT </constant> ioctl.</para>
<para>The top left corner, width and height of the source rectangle, that is
the area from which image date are processed by the hardware, is given by the
-<constant> V4L2_SEL_TGT_CROP_ACTIVE </constant>. Its coordinates are expressed
+<constant> V4L2_SEL_TGT_CROP </constant>. Its coordinates are expressed
in in the same coordinate system as the bounds rectangle. The active cropping
area must lie completely inside the crop boundaries and the driver may further
adjust the requested size and/or position according to hardware
@@ -165,7 +166,7 @@ bounding rectangle.</para>
<para>The part of a video signal or graphics display where the image is
inserted by the hardware is controlled by <constant>
-V4L2_SEL_TGT_COMPOSE_ACTIVE </constant> target. The rectangle's coordinates
+V4L2_SEL_TGT_COMPOSE </constant> target. The rectangle's coordinates
are expressed in pixels. The composing rectangle must lie completely inside the
bounds rectangle. The driver must adjust the area to fit to the bounding
limits. Moreover, the driver can perform other adjustments according to
@@ -184,7 +185,7 @@ such a padded area is driver-dependent feature not covered by this document.
Driver developers are encouraged to keep padded rectangle equal to active one.
The padded target is accessed by the <constant> V4L2_SEL_TGT_COMPOSE_PADDED
</constant> identifier. It must contain all pixels from the <constant>
-V4L2_SEL_TGT_COMPOSE_ACTIVE </constant> target.</para>
+V4L2_SEL_TGT_COMPOSE </constant> target.</para>
</section>
@@ -193,8 +194,8 @@ V4L2_SEL_TGT_COMPOSE_ACTIVE </constant> target.</para>
<title>Scaling control</title>
<para>An application can detect if scaling is performed by comparing the width
-and the height of rectangles obtained using <constant> V4L2_SEL_TGT_CROP_ACTIVE
-</constant> and <constant> V4L2_SEL_TGT_COMPOSE_ACTIVE </constant> targets. If
+and the height of rectangles obtained using <constant> V4L2_SEL_TGT_CROP
+</constant> and <constant> V4L2_SEL_TGT_COMPOSE </constant> targets. If
these are not equal then the scaling is applied. The application can compute
the scaling ratios using these values.</para>
@@ -216,18 +217,17 @@ composing and cropping operations by setting the appropriate targets. The V4L2
API lacks any support for composing to and cropping from an image inside a
memory buffer. The application could configure a capture device to fill only a
part of an image by abusing V4L2 API. Cropping a smaller image from a larger
-one is achieved by setting the field <structfield>
-&v4l2-pix-format;::bytesperline </structfield>. Introducing an image offsets
-could be done by modifying field <structfield> &v4l2-buffer;::m:userptr
-</structfield> before calling <constant> VIDIOC_QBUF </constant>. Those
+one is achieved by setting the field
+&v4l2-pix-format;<structfield>::bytesperline</structfield>. Introducing an image offsets
+could be done by modifying field &v4l2-buffer;<structfield>::m_userptr</structfield>
+before calling <constant> VIDIOC_QBUF </constant>. Those
operations should be avoided because they are not portable (endianness), and do
not work for macroblock and Bayer formats and mmap buffers. The selection API
deals with configuration of buffer cropping/composing in a clear, intuitive and
portable way. Next, with the selection API the concepts of the padded target
-and constraints flags are introduced. Finally, <structname> &v4l2-crop;
-</structname> and <structname> &v4l2-cropcap; </structname> have no reserved
-fields. Therefore there is no way to extend their functionality. The new
-<structname> &v4l2-selection; </structname> provides a lot of place for future
+and constraints flags are introduced. Finally, &v4l2-crop; and &v4l2-cropcap;
+have no reserved fields. Therefore there is no way to extend their functionality.
+The new &v4l2-selection; provides a lot of place for future
extensions. Driver developers are encouraged to implement only selection API.
The former cropping API would be simulated using the new one. </para>
@@ -252,7 +252,7 @@ area)</para>
ret = ioctl(fd, &VIDIOC-G-SELECTION;, &amp;sel);
if (ret)
exit(-1);
- sel.target = V4L2_SEL_TGT_CROP_ACTIVE;
+ sel.target = V4L2_SEL_TGT_CROP;
ret = ioctl(fd, &VIDIOC-S-SELECTION;, &amp;sel);
if (ret)
exit(-1);
@@ -281,7 +281,7 @@ area)</para>
r.left = sel.r.width / 4;
r.top = sel.r.height / 4;
sel.r = r;
- sel.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
+ sel.target = V4L2_SEL_TGT_COMPOSE;
sel.flags = V4L2_SEL_FLAG_LE;
ret = ioctl(fd, &VIDIOC-S-SELECTION;, &amp;sel);
if (ret)
@@ -298,11 +298,11 @@ V4L2_BUF_TYPE_VIDEO_OUTPUT </constant> for other devices</para>
&v4l2-selection; compose = {
.type = V4L2_BUF_TYPE_VIDEO_OUTPUT,
- .target = V4L2_SEL_TGT_COMPOSE_ACTIVE,
+ .target = V4L2_SEL_TGT_COMPOSE,
};
&v4l2-selection; crop = {
.type = V4L2_BUF_TYPE_VIDEO_OUTPUT,
- .target = V4L2_SEL_TGT_CROP_ACTIVE,
+ .target = V4L2_SEL_TGT_CROP,
};
double hscale, vscale;
diff --git a/Documentation/DocBook/media/v4l/selections-common.xml b/Documentation/DocBook/media/v4l/selections-common.xml
new file mode 100644
index 00000000000..7502f784b8c
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/selections-common.xml
@@ -0,0 +1,164 @@
+<section id="v4l2-selections-common">
+
+ <title>Common selection definitions</title>
+
+ <para>While the <link linkend="selection-api">V4L2 selection
+ API</link> and <link linkend="v4l2-subdev-selections">V4L2 subdev
+ selection APIs</link> are very similar, there's one fundamental
+ difference between the two. On sub-device API, the selection
+ rectangle refers to the media bus format, and is bound to a
+ sub-device's pad. On the V4L2 interface the selection rectangles
+ refer to the in-memory pixel format.</para>
+
+ <para>This section defines the common definitions of the
+ selection interfaces on the two APIs.</para>
+
+ <section id="v4l2-selection-targets">
+
+ <title>Selection targets</title>
+
+ <para>The precise meaning of the selection targets may be
+ dependent on which of the two interfaces they are used.</para>
+
+ <table pgwide="1" frame="none" id="v4l2-selection-targets-table">
+ <title>Selection target definitions</title>
+ <tgroup cols="5">
+ <colspec colname="c1" />
+ <colspec colname="c2" />
+ <colspec colname="c3" />
+ <colspec colname="c4" />
+ <colspec colname="c5" />
+ &cs-def;
+ <thead>
+ <row rowsep="1">
+ <entry align="left">Target name</entry>
+ <entry align="left">id</entry>
+ <entry align="left">Definition</entry>
+ <entry align="left">Valid for V4L2</entry>
+ <entry align="left">Valid for V4L2 subdev</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_SEL_TGT_CROP</constant></entry>
+ <entry>0x0000</entry>
+ <entry>Crop rectangle. Defines the cropped area.</entry>
+ <entry>Yes</entry>
+ <entry>Yes</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_SEL_TGT_CROP_DEFAULT</constant></entry>
+ <entry>0x0001</entry>
+ <entry>Suggested cropping rectangle that covers the "whole picture".</entry>
+ <entry>Yes</entry>
+ <entry>No</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_SEL_TGT_CROP_BOUNDS</constant></entry>
+ <entry>0x0002</entry>
+ <entry>Bounds of the crop rectangle. All valid crop
+ rectangles fit inside the crop bounds rectangle.
+ </entry>
+ <entry>Yes</entry>
+ <entry>Yes</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_SEL_TGT_COMPOSE</constant></entry>
+ <entry>0x0100</entry>
+ <entry>Compose rectangle. Used to configure scaling
+ and composition.</entry>
+ <entry>Yes</entry>
+ <entry>Yes</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_SEL_TGT_COMPOSE_DEFAULT</constant></entry>
+ <entry>0x0101</entry>
+ <entry>Suggested composition rectangle that covers the "whole picture".</entry>
+ <entry>Yes</entry>
+ <entry>No</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_SEL_TGT_COMPOSE_BOUNDS</constant></entry>
+ <entry>0x0102</entry>
+ <entry>Bounds of the compose rectangle. All valid compose
+ rectangles fit inside the compose bounds rectangle.</entry>
+ <entry>Yes</entry>
+ <entry>Yes</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_SEL_TGT_COMPOSE_PADDED</constant></entry>
+ <entry>0x0103</entry>
+ <entry>The active area and all padding pixels that are inserted or
+ modified by hardware.</entry>
+ <entry>Yes</entry>
+ <entry>No</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ </section>
+
+ <section id="v4l2-selection-flags">
+
+ <title>Selection flags</title>
+
+ <table pgwide="1" frame="none" id="v4l2-selection-flags-table">
+ <title>Selection flag definitions</title>
+ <tgroup cols="5">
+ <colspec colname="c1" />
+ <colspec colname="c2" />
+ <colspec colname="c3" />
+ <colspec colname="c4" />
+ <colspec colname="c5" />
+ &cs-def;
+ <thead>
+ <row rowsep="1">
+ <entry align="left">Flag name</entry>
+ <entry align="left">id</entry>
+ <entry align="left">Definition</entry>
+ <entry align="left">Valid for V4L2</entry>
+ <entry align="left">Valid for V4L2 subdev</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_SEL_FLAG_GE</constant></entry>
+ <entry>(1 &lt;&lt; 0)</entry>
+ <entry>Suggest the driver it should choose greater or
+ equal rectangle (in size) than was requested. Albeit the
+ driver may choose a lesser size, it will only do so due to
+ hardware limitations. Without this flag (and
+ <constant>V4L2_SEL_FLAG_LE</constant>) the
+ behaviour is to choose the closest possible
+ rectangle.</entry>
+ <entry>Yes</entry>
+ <entry>Yes</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_SEL_FLAG_LE</constant></entry>
+ <entry>(1 &lt;&lt; 1)</entry>
+ <entry>Suggest the driver it
+ should choose lesser or equal rectangle (in size) than was
+ requested. Albeit the driver may choose a greater size, it
+ will only do so due to hardware limitations.</entry>
+ <entry>Yes</entry>
+ <entry>Yes</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_SEL_FLAG_KEEP_CONFIG</constant></entry>
+ <entry>(1 &lt;&lt; 2)</entry>
+ <entry>The configuration must not be propagated to any
+ further processing steps. If this flag is not given, the
+ configuration is propagated inside the subdevice to all
+ further processing steps.</entry>
+ <entry>No</entry>
+ <entry>Yes</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ </section>
+
+</section>
diff --git a/Documentation/DocBook/media/v4l/subdev-formats.xml b/Documentation/DocBook/media/v4l/subdev-formats.xml
index 49c532ebbbb..a0a936455fa 100644
--- a/Documentation/DocBook/media/v4l/subdev-formats.xml
+++ b/Documentation/DocBook/media/v4l/subdev-formats.xml
@@ -2565,5 +2565,49 @@
</tgroup>
</table>
</section>
+
+ <section id="v4l2-mbus-vendor-spec-fmts">
+ <title>Vendor and Device Specific Formats</title>
+
+ <note>
+ <title>Experimental</title>
+ <para>This is an <link linkend="experimental">experimental</link>
+interface and may change in the future.</para>
+ </note>
+
+ <para>This section lists complex data formats that are either vendor or
+ device specific.
+ </para>
+
+ <para>The following table lists the existing vendor and device specific
+ formats.</para>
+
+ <table pgwide="0" frame="none" id="v4l2-mbus-pixelcode-vendor-specific">
+ <title>Vendor and device specific formats</title>
+ <tgroup cols="3">
+ <colspec colname="id" align="left" />
+ <colspec colname="code" align="left"/>
+ <colspec colname="remarks" align="left"/>
+ <thead>
+ <row>
+ <entry>Identifier</entry>
+ <entry>Code</entry>
+ <entry>Comments</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row id="V4L2-MBUS-FMT-S5C-UYVY-JPEG-1X8">
+ <entry>V4L2_MBUS_FMT_S5C_UYVY_JPEG_1X8</entry>
+ <entry>0x5001</entry>
+ <entry>
+ Interleaved raw UYVY and JPEG image format with embedded
+ meta-data used by Samsung S3C73MX camera sensors.
+ </entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </section>
+
</section>
</section>
diff --git a/Documentation/DocBook/media/v4l/v4l2.xml b/Documentation/DocBook/media/v4l/v4l2.xml
index 008c2d73a48..4d110b1ad3e 100644
--- a/Documentation/DocBook/media/v4l/v4l2.xml
+++ b/Documentation/DocBook/media/v4l/v4l2.xml
@@ -140,9 +140,17 @@ structs, ioctls) must be noted in more detail in the history chapter
applications. -->
<revision>
+ <revnumber>3.6</revnumber>
+ <date>2012-07-02</date>
+ <authorinitials>hv</authorinitials>
+ <revremark>Added VIDIOC_ENUM_FREQ_BANDS.
+ </revremark>
+ </revision>
+
+ <revision>
<revnumber>3.5</revnumber>
<date>2012-05-07</date>
- <authorinitials>sa, sn</authorinitials>
+ <authorinitials>sa, sn, hv</authorinitials>
<revremark>Added V4L2_CTRL_TYPE_INTEGER_MENU and V4L2 subdev
selections API. Improved the description of V4L2_CID_COLORFX
control, added V4L2_CID_COLORFX_CBCR control.
@@ -153,11 +161,8 @@ applications. -->
V4L2_CID_3A_LOCK, V4L2_CID_AUTO_FOCUS_START,
V4L2_CID_AUTO_FOCUS_STOP, V4L2_CID_AUTO_FOCUS_STATUS
and V4L2_CID_AUTO_FOCUS_RANGE.
- </revremark>
- <date>2012-05-01</date>
- <authorinitials>hv</authorinitials>
- <revremark>Added VIDIOC_ENUM_DV_TIMINGS, VIDIOC_QUERY_DV_TIMINGS and
- VIDIOC_DV_TIMINGS_CAP.
+ Added VIDIOC_ENUM_DV_TIMINGS, VIDIOC_QUERY_DV_TIMINGS and
+ VIDIOC_DV_TIMINGS_CAP.
</revremark>
</revision>
@@ -467,7 +472,7 @@ and discussions on the V4L mailing list.</revremark>
</partinfo>
<title>Video for Linux Two API Specification</title>
- <subtitle>Revision 3.5</subtitle>
+ <subtitle>Revision 3.6</subtitle>
<chapter id="common">
&sub-common;
@@ -534,9 +539,11 @@ and discussions on the V4L mailing list.</revremark>
&sub-enum-fmt;
&sub-enum-framesizes;
&sub-enum-frameintervals;
+ &sub-enum-freq-bands;
&sub-enuminput;
&sub-enumoutput;
&sub-enumstd;
+ &sub-expbuf;
&sub-g-audio;
&sub-g-audioout;
&sub-g-crop;
@@ -575,6 +582,7 @@ and discussions on the V4L mailing list.</revremark>
&sub-subdev-enum-frame-size;
&sub-subdev-enum-mbus-code;
&sub-subdev-g-crop;
+ &sub-subdev-g-edid;
&sub-subdev-g-fmt;
&sub-subdev-g-frame-interval;
&sub-subdev-g-selection;
@@ -589,6 +597,11 @@ and discussions on the V4L mailing list.</revremark>
&sub-write;
</appendix>
+ <appendix>
+ <title>Common definitions for V4L2 and V4L2 subdev interfaces</title>
+ &sub-selections-common;
+ </appendix>
+
<appendix id="videodev">
<title>Video For Linux Two Header File</title>
&sub-videodev2-h;
diff --git a/Documentation/DocBook/media/v4l/vidioc-create-bufs.xml b/Documentation/DocBook/media/v4l/vidioc-create-bufs.xml
index a2474ecb574..cd994367243 100644
--- a/Documentation/DocBook/media/v4l/vidioc-create-bufs.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-create-bufs.xml
@@ -6,7 +6,8 @@
<refnamediv>
<refname>VIDIOC_CREATE_BUFS</refname>
- <refpurpose>Create buffers for Memory Mapped or User Pointer I/O</refpurpose>
+ <refpurpose>Create buffers for Memory Mapped or User Pointer or DMA Buffer
+ I/O</refpurpose>
</refnamediv>
<refsynopsisdiv>
@@ -55,16 +56,16 @@
</note>
<para>This ioctl is used to create buffers for <link linkend="mmap">memory
-mapped</link> or <link linkend="userp">user pointer</link>
-I/O. It can be used as an alternative or in addition to the
-<constant>VIDIOC_REQBUFS</constant> ioctl, when a tighter control over buffers
-is required. This ioctl can be called multiple times to create buffers of
-different sizes.</para>
+mapped</link> or <link linkend="userp">user pointer</link> or <link
+linkend="dmabuf">DMA buffer</link> I/O. It can be used as an alternative or in
+addition to the <constant>VIDIOC_REQBUFS</constant> ioctl, when a tighter
+control over buffers is required. This ioctl can be called multiple times to
+create buffers of different sizes.</para>
<para>To allocate device buffers applications initialize relevant fields of
the <structname>v4l2_create_buffers</structname> structure. They set the
<structfield>type</structfield> field in the
-<structname>v4l2_format</structname> structure, embedded in this
+&v4l2-format; structure, embedded in this
structure, to the respective stream or buffer type.
<structfield>count</structfield> must be set to the number of required buffers.
<structfield>memory</structfield> specifies the required I/O method. The
@@ -97,18 +98,25 @@ information.</para>
<row>
<entry>__u32</entry>
<entry><structfield>count</structfield></entry>
- <entry>The number of buffers requested or granted.</entry>
+ <entry>The number of buffers requested or granted. If count == 0, then
+ <constant>VIDIOC_CREATE_BUFS</constant> will set <structfield>index</structfield>
+ to the current number of created buffers, and it will check the validity of
+ <structfield>memory</structfield> and <structfield>format.type</structfield>.
+ If those are invalid -1 is returned and errno is set to &EINVAL;,
+ otherwise <constant>VIDIOC_CREATE_BUFS</constant> returns 0. It will
+ never set errno to &EBUSY; in this particular case.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>memory</structfield></entry>
<entry>Applications set this field to
-<constant>V4L2_MEMORY_MMAP</constant> or
+<constant>V4L2_MEMORY_MMAP</constant>,
+<constant>V4L2_MEMORY_DMABUF</constant> or
<constant>V4L2_MEMORY_USERPTR</constant>. See <xref linkend="v4l2-memory"
/></entry>
</row>
<row>
- <entry>struct&nbsp;v4l2_format</entry>
+ <entry>&v4l2-format;</entry>
<entry><structfield>format</structfield></entry>
<entry>Filled in by the application, preserved by the driver.</entry>
</row>
diff --git a/Documentation/DocBook/media/v4l/vidioc-cropcap.xml b/Documentation/DocBook/media/v4l/vidioc-cropcap.xml
index f1bac2c6e97..bf7cc979fdf 100644
--- a/Documentation/DocBook/media/v4l/vidioc-cropcap.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-cropcap.xml
@@ -59,6 +59,9 @@ constant except when switching the video standard. Remember this
switch can occur implicit when switching the video input or
output.</para>
+ <para>This ioctl must be implemented for video capture or output devices that
+support cropping and/or scaling and/or have non-square pixels, and for overlay devices.</para>
+
<table pgwide="1" frame="none" id="v4l2-cropcap">
<title>struct <structname>v4l2_cropcap</structname></title>
<tgroup cols="3">
@@ -70,10 +73,10 @@ output.</para>
<entry>Type of the data stream, set by the application.
Only these types are valid here:
<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant>,
+<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE</constant>,
<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant>,
-<constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant>, and custom (driver
-defined) types with code <constant>V4L2_BUF_TYPE_PRIVATE</constant>
-and higher. See <xref linkend="v4l2-buf-type" />.</entry>
+<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE</constant> and
+<constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant>. See <xref linkend="v4l2-buf-type" />.</entry>
</row>
<row>
<entry>struct <link linkend="v4l2-rect-crop">v4l2_rect</link></entry>
@@ -156,8 +159,7 @@ on 22 Oct 2002 subject "Re:[V4L][patches!] Re:v4l2/kernel-2.5" -->
<term><errorcode>EINVAL</errorcode></term>
<listitem>
<para>The &v4l2-cropcap; <structfield>type</structfield> is
-invalid. This is not permitted for video capture, output and overlay devices,
-which must support <constant>VIDIOC_CROPCAP</constant>.</para>
+invalid.</para>
</listitem>
</varlistentry>
</variablelist>
diff --git a/Documentation/DocBook/media/v4l/vidioc-decoder-cmd.xml b/Documentation/DocBook/media/v4l/vidioc-decoder-cmd.xml
index 74b87f6e480..9215627b04c 100644
--- a/Documentation/DocBook/media/v4l/vidioc-decoder-cmd.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-decoder-cmd.xml
@@ -49,13 +49,6 @@
<refsect1>
<title>Description</title>
- <note>
- <title>Experimental</title>
-
- <para>This is an <link linkend="experimental">experimental</link>
-interface and may change in the future.</para>
- </note>
-
<para>These ioctls control an audio/video (usually MPEG-) decoder.
<constant>VIDIOC_DECODER_CMD</constant> sends a command to the
decoder, <constant>VIDIOC_TRY_DECODER_CMD</constant> can be used to
diff --git a/Documentation/DocBook/media/v4l/vidioc-dv-timings-cap.xml b/Documentation/DocBook/media/v4l/vidioc-dv-timings-cap.xml
index 6673ce58205..cd7720d404e 100644
--- a/Documentation/DocBook/media/v4l/vidioc-dv-timings-cap.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-dv-timings-cap.xml
@@ -54,15 +54,9 @@
interface and may change in the future.</para>
</note>
- <para>To query the available timings, applications initialize the
-<structfield>index</structfield> field and zero the reserved array of &v4l2-dv-timings-cap;
-and call the <constant>VIDIOC_DV_TIMINGS_CAP</constant> ioctl with a pointer to this
-structure. Drivers fill the rest of the structure or return an
-&EINVAL; when the index is out of bounds. To enumerate all supported DV timings,
-applications shall begin at index zero, incrementing by one until the
-driver returns <errorcode>EINVAL</errorcode>. Note that drivers may enumerate a
-different set of DV timings after switching the video input or
-output.</para>
+ <para>To query the capabilities of the DV receiver/transmitter applications can call
+this ioctl and the driver will fill in the structure. Note that drivers may return
+different values after switching the video input or output.</para>
<table pgwide="1" frame="none" id="v4l2-bt-timings-cap">
<title>struct <structname>v4l2_bt_timings_cap</structname></title>
@@ -115,7 +109,7 @@ output.</para>
<row>
<entry>__u32</entry>
<entry><structfield>reserved</structfield>[16]</entry>
- <entry></entry>
+ <entry>Reserved for future extensions. Drivers must set the array to zero.</entry>
</row>
</tbody>
</tgroup>
diff --git a/Documentation/DocBook/media/v4l/vidioc-encoder-cmd.xml b/Documentation/DocBook/media/v4l/vidioc-encoder-cmd.xml
index f431b3ba79b..0619ca5d2d3 100644
--- a/Documentation/DocBook/media/v4l/vidioc-encoder-cmd.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-encoder-cmd.xml
@@ -49,13 +49,6 @@
<refsect1>
<title>Description</title>
- <note>
- <title>Experimental</title>
-
- <para>This is an <link linkend="experimental">experimental</link>
-interface and may change in the future.</para>
- </note>
-
<para>These ioctls control an audio/video (usually MPEG-) encoder.
<constant>VIDIOC_ENCODER_CMD</constant> sends a command to the
encoder, <constant>VIDIOC_TRY_ENCODER_CMD</constant> can be used to
diff --git a/Documentation/DocBook/media/v4l/vidioc-enum-dv-presets.xml b/Documentation/DocBook/media/v4l/vidioc-enum-dv-presets.xml
index 509f0012d2a..fced5fb0dbf 100644
--- a/Documentation/DocBook/media/v4l/vidioc-enum-dv-presets.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-enum-dv-presets.xml
@@ -229,6 +229,12 @@ intended for the user.</entry>
is out of bounds.</para>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term><errorcode>ENODATA</errorcode></term>
+ <listitem>
+ <para>Digital video presets are not supported for this input or output.</para>
+ </listitem>
+ </varlistentry>
</variablelist>
</refsect1>
</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-enum-dv-timings.xml b/Documentation/DocBook/media/v4l/vidioc-enum-dv-timings.xml
index 24c3bf4fd29..b3e17c1dfaf 100644
--- a/Documentation/DocBook/media/v4l/vidioc-enum-dv-timings.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-enum-dv-timings.xml
@@ -106,6 +106,12 @@ application.</entry>
is out of bounds.</para>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term><errorcode>ENODATA</errorcode></term>
+ <listitem>
+ <para>Digital video presets are not supported for this input or output.</para>
+ </listitem>
+ </varlistentry>
</variablelist>
</refsect1>
</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-enum-fmt.xml b/Documentation/DocBook/media/v4l/vidioc-enum-fmt.xml
index 81ebe48317f..f8dfeed34fc 100644
--- a/Documentation/DocBook/media/v4l/vidioc-enum-fmt.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-enum-fmt.xml
@@ -58,6 +58,9 @@ structure. Drivers fill the rest of the structure or return an
incrementing by one until <errorcode>EINVAL</errorcode> is
returned.</para>
+ <para>Note that after switching input or output the list of enumerated image
+formats may be different.</para>
+
<table pgwide="1" frame="none" id="v4l2-fmtdesc">
<title>struct <structname>v4l2_fmtdesc</structname></title>
<tgroup cols="3">
@@ -78,10 +81,8 @@ Only these types are valid here:
<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant>,
<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE</constant>,
<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant>,
-<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE</constant>,
-<constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant>, and custom (driver
-defined) types with code <constant>V4L2_BUF_TYPE_PRIVATE</constant>
-and higher. See <xref linkend="v4l2-buf-type" />.</entry>
+<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE</constant> and
+<constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant>. See <xref linkend="v4l2-buf-type" />.</entry>
</row>
<row>
<entry>__u32</entry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-enum-framesizes.xml b/Documentation/DocBook/media/v4l/vidioc-enum-framesizes.xml
index f77a13f486d..a78454b5abc 100644
--- a/Documentation/DocBook/media/v4l/vidioc-enum-framesizes.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-enum-framesizes.xml
@@ -50,13 +50,6 @@ and pixel format and receives a frame width and height.</para>
<refsect1>
<title>Description</title>
- <note>
- <title>Experimental</title>
-
- <para>This is an <link linkend="experimental">experimental</link>
-interface and may change in the future.</para>
- </note>
-
<para>This ioctl allows applications to enumerate all frame sizes
(&ie; width and height in pixels) that the device supports for the
given pixel format.</para>
diff --git a/Documentation/DocBook/media/v4l/vidioc-enum-freq-bands.xml b/Documentation/DocBook/media/v4l/vidioc-enum-freq-bands.xml
new file mode 100644
index 00000000000..6541ba0175e
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-enum-freq-bands.xml
@@ -0,0 +1,179 @@
+<refentry id="vidioc-enum-freq-bands">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_ENUM_FREQ_BANDS</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_ENUM_FREQ_BANDS</refname>
+ <refpurpose>Enumerate supported frequency bands</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_frequency_band
+*<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_ENUM_FREQ_BANDS</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <note>
+ <title>Experimental</title>
+ <para>This is an <link linkend="experimental"> experimental </link>
+ interface and may change in the future.</para>
+ </note>
+
+ <para>Enumerates the frequency bands that a tuner or modulator supports.
+To do this applications initialize the <structfield>tuner</structfield>,
+<structfield>type</structfield> and <structfield>index</structfield> fields,
+and zero out the <structfield>reserved</structfield> array of a &v4l2-frequency-band; and
+call the <constant>VIDIOC_ENUM_FREQ_BANDS</constant> ioctl with a pointer
+to this structure.</para>
+
+ <para>This ioctl is supported if the <constant>V4L2_TUNER_CAP_FREQ_BANDS</constant> capability
+ of the corresponding tuner/modulator is set.</para>
+
+ <table pgwide="1" frame="none" id="v4l2-frequency-band">
+ <title>struct <structname>v4l2_frequency_band</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>tuner</structfield></entry>
+ <entry>The tuner or modulator index number. This is the
+same value as in the &v4l2-input; <structfield>tuner</structfield>
+field and the &v4l2-tuner; <structfield>index</structfield> field, or
+the &v4l2-output; <structfield>modulator</structfield> field and the
+&v4l2-modulator; <structfield>index</structfield> field.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>type</structfield></entry>
+ <entry>The tuner type. This is the same value as in the
+&v4l2-tuner; <structfield>type</structfield> field. The type must be set
+to <constant>V4L2_TUNER_RADIO</constant> for <filename>/dev/radioX</filename>
+device nodes, and to <constant>V4L2_TUNER_ANALOG_TV</constant>
+for all others. Set this field to <constant>V4L2_TUNER_RADIO</constant> for
+modulators (currently only radio modulators are supported).
+See <xref linkend="v4l2-tuner-type" /></entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>index</structfield></entry>
+ <entry>Identifies the frequency band, set by the application.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>capability</structfield></entry>
+ <entry spanname="hspan">The tuner/modulator capability flags for
+this frequency band, see <xref linkend="tuner-capability" />. The <constant>V4L2_TUNER_CAP_LOW</constant>
+capability must be the same for all frequency bands of the selected tuner/modulator.
+So either all bands have that capability set, or none of them have that capability.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>rangelow</structfield></entry>
+ <entry spanname="hspan">The lowest tunable frequency in
+units of 62.5 kHz, or if the <structfield>capability</structfield>
+flag <constant>V4L2_TUNER_CAP_LOW</constant> is set, in units of 62.5
+Hz, for this frequency band.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>rangehigh</structfield></entry>
+ <entry spanname="hspan">The highest tunable frequency in
+units of 62.5 kHz, or if the <structfield>capability</structfield>
+flag <constant>V4L2_TUNER_CAP_LOW</constant> is set, in units of 62.5
+Hz, for this frequency band.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>modulation</structfield></entry>
+ <entry spanname="hspan">The supported modulation systems of this frequency band.
+ See <xref linkend="band-modulation" />. Note that currently only one
+ modulation system per frequency band is supported. More work will need to
+ be done if multiple modulation systems are possible. Contact the
+ linux-media mailing list (&v4l-ml;) if you need that functionality.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield>[9]</entry>
+ <entry>Reserved for future extensions. Applications and drivers
+ must set the array to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <table pgwide="1" frame="none" id="band-modulation">
+ <title>Band Modulation Systems</title>
+ <tgroup cols="3">
+ &cs-def;
+ <tbody valign="top">
+ <row>
+ <entry><constant>V4L2_BAND_MODULATION_VSB</constant></entry>
+ <entry>0x02</entry>
+ <entry>Vestigial Sideband modulation, used for analog TV.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BAND_MODULATION_FM</constant></entry>
+ <entry>0x04</entry>
+ <entry>Frequency Modulation, commonly used for analog radio.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_BAND_MODULATION_AM</constant></entry>
+ <entry>0x08</entry>
+ <entry>Amplitude Modulation, commonly used for analog radio.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>The <structfield>tuner</structfield> or <structfield>index</structfield>
+is out of bounds or the <structfield>type</structfield> field is wrong.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-enuminput.xml b/Documentation/DocBook/media/v4l/vidioc-enuminput.xml
index 46d5a044a53..3c9a81305ad 100644
--- a/Documentation/DocBook/media/v4l/vidioc-enuminput.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-enuminput.xml
@@ -283,7 +283,7 @@ input/output interface to linux-media@vger.kernel.org on 19 Oct 2009.
<entry>This input supports setting DV presets by using VIDIOC_S_DV_PRESET.</entry>
</row>
<row>
- <entry><constant>V4L2_IN_CAP_CUSTOM_TIMINGS</constant></entry>
+ <entry><constant>V4L2_IN_CAP_DV_TIMINGS</constant></entry>
<entry>0x00000002</entry>
<entry>This input supports setting video timings by using VIDIOC_S_DV_TIMINGS.</entry>
</row>
diff --git a/Documentation/DocBook/media/v4l/vidioc-enumoutput.xml b/Documentation/DocBook/media/v4l/vidioc-enumoutput.xml
index 428020000ef..f4ab0798545 100644
--- a/Documentation/DocBook/media/v4l/vidioc-enumoutput.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-enumoutput.xml
@@ -168,7 +168,7 @@ input/output interface to linux-media@vger.kernel.org on 19 Oct 2009.
<entry>This output supports setting DV presets by using VIDIOC_S_DV_PRESET.</entry>
</row>
<row>
- <entry><constant>V4L2_OUT_CAP_CUSTOM_TIMINGS</constant></entry>
+ <entry><constant>V4L2_OUT_CAP_DV_TIMINGS</constant></entry>
<entry>0x00000002</entry>
<entry>This output supports setting video timings by using VIDIOC_S_DV_TIMINGS.</entry>
</row>
diff --git a/Documentation/DocBook/media/v4l/vidioc-enumstd.xml b/Documentation/DocBook/media/v4l/vidioc-enumstd.xml
index 3a5fc5405f9..8065099401d 100644
--- a/Documentation/DocBook/media/v4l/vidioc-enumstd.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-enumstd.xml
@@ -378,6 +378,12 @@ system)</para></footnote></para></entry>
is out of bounds.</para>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term><errorcode>ENODATA</errorcode></term>
+ <listitem>
+ <para>Standard video timings are not supported for this input or output.</para>
+ </listitem>
+ </varlistentry>
</variablelist>
</refsect1>
</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-expbuf.xml b/Documentation/DocBook/media/v4l/vidioc-expbuf.xml
new file mode 100644
index 00000000000..72dfbd20a80
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-expbuf.xml
@@ -0,0 +1,212 @@
+<refentry id="vidioc-expbuf">
+
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_EXPBUF</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_EXPBUF</refname>
+ <refpurpose>Export a buffer as a DMABUF file descriptor.</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_exportbuffer *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_EXPBUF</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+
+ <note>
+ <title>Experimental</title>
+ <para>This is an <link linkend="experimental"> experimental </link>
+ interface and may change in the future.</para>
+ </note>
+
+<para>This ioctl is an extension to the <link linkend="mmap">memory
+mapping</link> I/O method, therefore it is available only for
+<constant>V4L2_MEMORY_MMAP</constant> buffers. It can be used to export a
+buffer as a DMABUF file at any time after buffers have been allocated with the
+&VIDIOC-REQBUFS; ioctl.</para>
+
+<para> To export a buffer, applications fill &v4l2-exportbuffer;. The
+<structfield> type </structfield> field is set to the same buffer type as was
+previously used with &v4l2-requestbuffers;<structfield> type </structfield>.
+Applications must also set the <structfield> index </structfield> field. Valid
+index numbers range from zero to the number of buffers allocated with
+&VIDIOC-REQBUFS; (&v4l2-requestbuffers;<structfield> count </structfield>)
+minus one. For the multi-planar API, applications set the <structfield> plane
+</structfield> field to the index of the plane to be exported. Valid planes
+range from zero to the maximal number of valid planes for the currently active
+format. For the single-planar API, applications must set <structfield> plane
+</structfield> to zero. Additional flags may be posted in the <structfield>
+flags </structfield> field. Refer to a manual for open() for details.
+Currently only O_CLOEXEC is supported. All other fields must be set to zero.
+In the case of multi-planar API, every plane is exported separately using
+multiple <constant> VIDIOC_EXPBUF </constant> calls. </para>
+
+<para> After calling <constant>VIDIOC_EXPBUF</constant> the <structfield> fd
+</structfield> field will be set by a driver. This is a DMABUF file
+descriptor. The application may pass it to other DMABUF-aware devices. Refer to
+<link linkend="dmabuf">DMABUF importing</link> for details about importing
+DMABUF files into V4L2 nodes. It is recommended to close a DMABUF file when it
+is no longer used to allow the associated memory to be reclaimed. </para>
+
+ </refsect1>
+ <refsect1>
+ <section>
+ <title>Examples</title>
+
+ <example>
+ <title>Exporting a buffer.</title>
+ <programlisting>
+int buffer_export(int v4lfd, &v4l2-buf-type; bt, int index, int *dmafd)
+{
+ &v4l2-exportbuffer; expbuf;
+
+ memset(&amp;expbuf, 0, sizeof(expbuf));
+ expbuf.type = bt;
+ expbuf.index = index;
+ if (ioctl(v4lfd, &VIDIOC-EXPBUF;, &amp;expbuf) == -1) {
+ perror("VIDIOC_EXPBUF");
+ return -1;
+ }
+
+ *dmafd = expbuf.fd;
+
+ return 0;
+}
+ </programlisting>
+ </example>
+
+ <example>
+ <title>Exporting a buffer using the multi-planar API.</title>
+ <programlisting>
+int buffer_export_mp(int v4lfd, &v4l2-buf-type; bt, int index,
+ int dmafd[], int n_planes)
+{
+ int i;
+
+ for (i = 0; i &lt; n_planes; ++i) {
+ &v4l2-exportbuffer; expbuf;
+
+ memset(&amp;expbuf, 0, sizeof(expbuf));
+ expbuf.type = bt;
+ expbuf.index = index;
+ expbuf.plane = i;
+ if (ioctl(v4lfd, &VIDIOC-EXPBUF;, &amp;expbuf) == -1) {
+ perror("VIDIOC_EXPBUF");
+ while (i)
+ close(dmafd[--i]);
+ return -1;
+ }
+ dmafd[i] = expbuf.fd;
+ }
+
+ return 0;
+}
+ </programlisting>
+ </example>
+ </section>
+ </refsect1>
+
+ <refsect1>
+ <table pgwide="1" frame="none" id="v4l2-exportbuffer">
+ <title>struct <structname>v4l2_exportbuffer</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>type</structfield></entry>
+ <entry>Type of the buffer, same as &v4l2-format;
+<structfield>type</structfield> or &v4l2-requestbuffers;
+<structfield>type</structfield>, set by the application. See <xref
+linkend="v4l2-buf-type" /></entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>index</structfield></entry>
+ <entry>Number of the buffer, set by the application. This field is
+only used for <link linkend="mmap">memory mapping</link> I/O and can range from
+zero to the number of buffers allocated with the &VIDIOC-REQBUFS; and/or
+&VIDIOC-CREATE-BUFS; ioctls. </entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>plane</structfield></entry>
+ <entry>Index of the plane to be exported when using the
+multi-planar API. Otherwise this value must be set to zero. </entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>flags</structfield></entry>
+ <entry>Flags for the newly created file, currently only <constant>
+O_CLOEXEC </constant> is supported, refer to the manual of open() for more
+details.</entry>
+ </row>
+ <row>
+ <entry>__s32</entry>
+ <entry><structfield>fd</structfield></entry>
+ <entry>The DMABUF file descriptor associated with a buffer. Set by
+ the driver.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved[11]</structfield></entry>
+ <entry>Reserved field for future use. Must be set to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>EINVAL</errorcode></term>
+ <listitem>
+ <para>A queue is not in MMAP mode or DMABUF exporting is not
+supported or <structfield> flags </structfield> or <structfield> type
+</structfield> or <structfield> index </structfield> or <structfield> plane
+</structfield> fields are invalid.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-crop.xml b/Documentation/DocBook/media/v4l/vidioc-g-crop.xml
index c4ff3b1887f..75c6a93de3c 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-crop.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-crop.xml
@@ -104,10 +104,8 @@ changed and <constant>VIDIOC_S_CROP</constant> returns the
<entry><structfield>type</structfield></entry>
<entry>Type of the data stream, set by the application.
Only these types are valid here: <constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant>,
-<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant>,
-<constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant>, and custom (driver
-defined) types with code <constant>V4L2_BUF_TYPE_PRIVATE</constant>
-and higher. See <xref linkend="v4l2-buf-type" />.</entry>
+<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant> and
+<constant>V4L2_BUF_TYPE_VIDEO_OVERLAY</constant>. See <xref linkend="v4l2-buf-type" />.</entry>
</row>
<row>
<entry>&v4l2-rect;</entry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-dv-preset.xml b/Documentation/DocBook/media/v4l/vidioc-g-dv-preset.xml
index 61be9fa3803..b9ea37634f6 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-dv-preset.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-dv-preset.xml
@@ -78,6 +78,12 @@ If the preset is not supported, it returns an &EINVAL; </para>
</listitem>
</varlistentry>
<varlistentry>
+ <term><errorcode>ENODATA</errorcode></term>
+ <listitem>
+ <para>Digital video presets are not supported for this input or output.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
<term><errorcode>EBUSY</errorcode></term>
<listitem>
<para>The device is busy and therefore can not change the preset.</para>
@@ -104,7 +110,4 @@ If the preset is not supported, it returns an &EINVAL; </para>
</tgroup>
</table>
</refsect1>
- <refsect1>
- &return-value;
- </refsect1>
</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml b/Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml
index eda1a2991bb..72369707bd7 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-dv-timings.xml
@@ -56,7 +56,9 @@ a pointer to the &v4l2-dv-timings; structure as argument. If the ioctl is not su
or the timing values are not correct, the driver returns &EINVAL;.</para>
<para>The <filename>linux/v4l2-dv-timings.h</filename> header can be used to get the
timings of the formats in the <xref linkend="cea861" /> and <xref linkend="vesadmt" />
-standards.</para>
+standards. If the current input or output does not support DV timings (e.g. if
+&VIDIOC-ENUMINPUT; does not set the <constant>V4L2_IN_CAP_DV_TIMINGS</constant> flag), then
+&ENODATA; is returned.</para>
</refsect1>
<refsect1>
@@ -71,6 +73,12 @@ standards.</para>
</listitem>
</varlistentry>
<varlistentry>
+ <term><errorcode>ENODATA</errorcode></term>
+ <listitem>
+ <para>Digital video timings are not supported for this input or output.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
<term><errorcode>EBUSY</errorcode></term>
<listitem>
<para>The device is busy and therefore can not change the timings.</para>
@@ -320,7 +328,4 @@ detected or used depends on the hardware.
</tgroup>
</table>
</refsect1>
- <refsect1>
- &return-value;
- </refsect1>
</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-enc-index.xml b/Documentation/DocBook/media/v4l/vidioc-g-enc-index.xml
index 2aef02c9044..be25029a16f 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-enc-index.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-enc-index.xml
@@ -48,13 +48,6 @@
<refsect1>
<title>Description</title>
- <note>
- <title>Experimental</title>
-
- <para>This is an <link linkend="experimental">experimental</link>
-interface and may change in the future.</para>
- </note>
-
<para>The <constant>VIDIOC_G_ENC_INDEX</constant> ioctl provides
meta data about a compressed video stream the same or another
application currently reads from the driver, which is useful for
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-fmt.xml b/Documentation/DocBook/media/v4l/vidioc-g-fmt.xml
index 52acff193a6..ee8f56e1bac 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-fmt.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-fmt.xml
@@ -81,7 +81,7 @@ the application calls the <constant>VIDIOC_S_FMT</constant> ioctl
with a pointer to a <structname>v4l2_format</structname> structure
the driver checks
and adjusts the parameters against hardware abilities. Drivers
-should not return an error code unless the input is ambiguous, this is
+should not return an error code unless the <structfield>type</structfield> field is invalid, this is
a mechanism to fathom device capabilities and to approach parameters
acceptable for both the application and driver. On success the driver
may program the hardware, allocate resources and generally prepare for
@@ -107,6 +107,10 @@ disabling I/O or possibly time consuming hardware preparations.
Although strongly recommended drivers are not required to implement
this ioctl.</para>
+ <para>The format as returned by <constant>VIDIOC_TRY_FMT</constant>
+must be identical to what <constant>VIDIOC_S_FMT</constant> returns for
+the same input or output.</para>
+
<table pgwide="1" frame="none" id="v4l2-format">
<title>struct <structname>v4l2_format</structname></title>
<tgroup cols="4">
@@ -170,9 +174,7 @@ capture and output devices.</entry>
<entry></entry>
<entry>__u8</entry>
<entry><structfield>raw_data</structfield>[200]</entry>
- <entry>Place holder for future extensions and custom
-(driver defined) formats with <structfield>type</structfield>
-<constant>V4L2_BUF_TYPE_PRIVATE</constant> and higher.</entry>
+ <entry>Place holder for future extensions.</entry>
</row>
</tbody>
</tgroup>
@@ -187,8 +189,7 @@ capture and output devices.</entry>
<term><errorcode>EINVAL</errorcode></term>
<listitem>
<para>The &v4l2-format; <structfield>type</structfield>
-field is invalid, the requested buffer type not supported, or the
-format is not supported with this buffer type.</para>
+field is invalid or the requested buffer type not supported.</para>
</listitem>
</varlistentry>
</variablelist>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-frequency.xml b/Documentation/DocBook/media/v4l/vidioc-g-frequency.xml
index 69c178a4d20..c7a1c462e72 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-frequency.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-frequency.xml
@@ -98,11 +98,12 @@ the &v4l2-output; <structfield>modulator</structfield> field and the
<entry>__u32</entry>
<entry><structfield>type</structfield></entry>
<entry>The tuner type. This is the same value as in the
-&v4l2-tuner; <structfield>type</structfield> field. See The type must be set
+&v4l2-tuner; <structfield>type</structfield> field. The type must be set
to <constant>V4L2_TUNER_RADIO</constant> for <filename>/dev/radioX</filename>
device nodes, and to <constant>V4L2_TUNER_ANALOG_TV</constant>
-for all others. The field is not applicable to modulators, &ie; ignored
-by drivers. See <xref linkend="v4l2-tuner-type" /></entry>
+for all others. Set this field to <constant>V4L2_TUNER_RADIO</constant> for
+modulators (currently only radio modulators are supported).
+See <xref linkend="v4l2-tuner-type" /></entry>
</row>
<row>
<entry>__u32</entry>
@@ -135,6 +136,12 @@ bounds or the value in the <structfield>type</structfield> field is
wrong.</para>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term><errorcode>EBUSY</errorcode></term>
+ <listitem>
+ <para>A hardware seek is in progress.</para>
+ </listitem>
+ </varlistentry>
</variablelist>
</refsect1>
</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-parm.xml b/Documentation/DocBook/media/v4l/vidioc-g-parm.xml
index f83d2cdd118..9058224d1bb 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-parm.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-parm.xml
@@ -108,9 +108,7 @@ devices.</para>
<entry></entry>
<entry>__u8</entry>
<entry><structfield>raw_data</structfield>[200]</entry>
- <entry>A place holder for future extensions and custom
-(driver defined) buffer types <constant>V4L2_BUF_TYPE_PRIVATE</constant> and
-higher.</entry>
+ <entry>A place holder for future extensions.</entry>
</row>
</tbody>
</tgroup>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-selection.xml b/Documentation/DocBook/media/v4l/vidioc-g-selection.xml
index bb04eff75f4..b11ec75e21a 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-selection.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-selection.xml
@@ -65,9 +65,9 @@ Do not use multiplanar buffers. Use <constant> V4L2_BUF_TYPE_VIDEO_CAPTURE
</constant>. Use <constant> V4L2_BUF_TYPE_VIDEO_OUTPUT </constant> instead of
<constant> V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE </constant>. The next step is
setting the value of &v4l2-selection; <structfield>target</structfield> field
-to <constant> V4L2_SEL_TGT_CROP_ACTIVE </constant> (<constant>
-V4L2_SEL_TGT_COMPOSE_ACTIVE </constant>). Please refer to table <xref
-linkend="v4l2-sel-target" /> or <xref linkend="selection-api" /> for additional
+to <constant> V4L2_SEL_TGT_CROP </constant> (<constant>
+V4L2_SEL_TGT_COMPOSE </constant>). Please refer to table <xref
+linkend="v4l2-selections-common" /> or <xref linkend="selection-api" /> for additional
targets. The <structfield>flags</structfield> and <structfield>reserved
</structfield> fields of &v4l2-selection; are ignored and they must be filled
with zeros. The driver fills the rest of the structure or
@@ -86,9 +86,9 @@ use multiplanar buffers. Use <constant> V4L2_BUF_TYPE_VIDEO_CAPTURE
</constant>. Use <constant> V4L2_BUF_TYPE_VIDEO_OUTPUT </constant> instead of
<constant> V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE </constant>. The next step is
setting the value of &v4l2-selection; <structfield>target</structfield> to
-<constant>V4L2_SEL_TGT_CROP_ACTIVE</constant> (<constant>
-V4L2_SEL_TGT_COMPOSE_ACTIVE </constant>). Please refer to table <xref
-linkend="v4l2-sel-target" /> or <xref linkend="selection-api" /> for additional
+<constant>V4L2_SEL_TGT_CROP</constant> (<constant>
+V4L2_SEL_TGT_COMPOSE </constant>). Please refer to table <xref
+linkend="v4l2-selections-common" /> or <xref linkend="selection-api" /> for additional
targets. The &v4l2-rect; <structfield>r</structfield> rectangle need to be
set to the desired active area. Field &v4l2-selection; <structfield> reserved
</structfield> is ignored and must be filled with zeros. The driver may adjust
@@ -152,78 +152,10 @@ satisfactory parameters have been negotiated. If constraints flags have to be
violated at then ERANGE is returned. The error indicates that <emphasis> there
exist no rectangle </emphasis> that satisfies the constraints.</para>
- </refsect1>
-
- <refsect1>
- <table frame="none" pgwide="1" id="v4l2-sel-target">
- <title>Selection targets.</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_SEL_TGT_CROP_ACTIVE</constant></entry>
- <entry>0x0000</entry>
- <entry>The area that is currently cropped by hardware.</entry>
- </row>
- <row>
- <entry><constant>V4L2_SEL_TGT_CROP_DEFAULT</constant></entry>
- <entry>0x0001</entry>
- <entry>Suggested cropping rectangle that covers the "whole picture".</entry>
- </row>
- <row>
- <entry><constant>V4L2_SEL_TGT_CROP_BOUNDS</constant></entry>
- <entry>0x0002</entry>
- <entry>Limits for the cropping rectangle.</entry>
- </row>
- <row>
- <entry><constant>V4L2_SEL_TGT_COMPOSE_ACTIVE</constant></entry>
- <entry>0x0100</entry>
- <entry>The area to which data is composed by hardware.</entry>
- </row>
- <row>
- <entry><constant>V4L2_SEL_TGT_COMPOSE_DEFAULT</constant></entry>
- <entry>0x0101</entry>
- <entry>Suggested composing rectangle that covers the "whole picture".</entry>
- </row>
- <row>
- <entry><constant>V4L2_SEL_TGT_COMPOSE_BOUNDS</constant></entry>
- <entry>0x0102</entry>
- <entry>Limits for the composing rectangle.</entry>
- </row>
- <row>
- <entry><constant>V4L2_SEL_TGT_COMPOSE_PADDED</constant></entry>
- <entry>0x0103</entry>
- <entry>The active area and all padding pixels that are inserted or modified by hardware.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
-
- <refsect1>
- <table frame="none" pgwide="1" id="v4l2-sel-flags">
- <title>Selection constraint flags</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_SEL_FLAG_GE</constant></entry>
- <entry>0x00000001</entry>
- <entry>Indicates that the adjusted rectangle must contain the original
- &v4l2-selection; <structfield>r</structfield> rectangle.</entry>
- </row>
- <row>
- <entry><constant>V4L2_SEL_FLAG_LE</constant></entry>
- <entry>0x00000002</entry>
- <entry>Indicates that the adjusted rectangle must be inside the original
- &v4l2-rect; <structfield>r</structfield> rectangle.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
- </refsect1>
+ <para>Selection targets and flags are documented in <xref
+ linkend="v4l2-selections-common"/>.</para>
- <section>
+ <para>
<figure id="sel-const-adjust">
<title>Size adjustments with constraint flags.</title>
<mediaobject>
@@ -236,9 +168,9 @@ exist no rectangle </emphasis> that satisfies the constraints.</para>
</textobject>
</mediaobject>
</figure>
- </section>
+ </para>
- <refsect1>
+ <para>
<table pgwide="1" frame="none" id="v4l2-selection">
<title>struct <structname>v4l2_selection</structname></title>
<tgroup cols="3">
@@ -252,14 +184,14 @@ exist no rectangle </emphasis> that satisfies the constraints.</para>
<row>
<entry>__u32</entry>
<entry><structfield>target</structfield></entry>
- <entry>Used to select between <link linkend="v4l2-sel-target"> cropping
+ <entry>Used to select between <link linkend="v4l2-selections-common"> cropping
and composing rectangles</link>.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>flags</structfield></entry>
<entry>Flags controlling the selection rectangle adjustments, refer to
- <link linkend="v4l2-sel-flags">selection flags</link>.</entry>
+ <link linkend="v4l2-selection-flags">selection flags</link>.</entry>
</row>
<row>
<entry>&v4l2-rect;</entry>
@@ -274,6 +206,7 @@ exist no rectangle </emphasis> that satisfies the constraints.</para>
</tbody>
</tgroup>
</table>
+ </para>
</refsect1>
<refsect1>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-std.xml b/Documentation/DocBook/media/v4l/vidioc-g-std.xml
index 99ff1a01622..4a898417de2 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-std.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-std.xml
@@ -72,7 +72,9 @@ flags, being a write-only ioctl it does not return the actual new standard as
the current input does not support the requested standard the driver
returns an &EINVAL;. When the standard set is ambiguous drivers may
return <errorcode>EINVAL</errorcode> or choose any of the requested
-standards.</para>
+standards. If the current input or output does not support standard video timings (e.g. if
+&VIDIOC-ENUMINPUT; does not set the <constant>V4L2_IN_CAP_STD</constant> flag), then
+&ENODATA; is returned.</para>
</refsect1>
<refsect1>
@@ -85,6 +87,12 @@ standards.</para>
<para>The <constant>VIDIOC_S_STD</constant> parameter was unsuitable.</para>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term><errorcode>ENODATA</errorcode></term>
+ <listitem>
+ <para>Standard video timings are not supported for this input or output.</para>
+ </listitem>
+ </varlistentry>
</variablelist>
</refsect1>
</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-tuner.xml b/Documentation/DocBook/media/v4l/vidioc-g-tuner.xml
index 62a1aa200a3..6cc82010c73 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-tuner.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-tuner.xml
@@ -119,10 +119,14 @@ field is not quite clear.--></para></entry>
<xref linkend="tuner-capability" />. Audio flags indicate the ability
to decode audio subprograms. They will <emphasis>not</emphasis>
change, for example with the current video standard.</para><para>When
-the structure refers to a radio tuner only the
-<constant>V4L2_TUNER_CAP_LOW</constant>,
-<constant>V4L2_TUNER_CAP_STEREO</constant> and
-<constant>V4L2_TUNER_CAP_RDS</constant> flags can be set.</para></entry>
+the structure refers to a radio tuner the
+<constant>V4L2_TUNER_CAP_LANG1</constant>,
+<constant>V4L2_TUNER_CAP_LANG2</constant> and
+<constant>V4L2_TUNER_CAP_NORM</constant> flags can't be used.</para>
+<para>If multiple frequency bands are supported, then
+<structfield>capability</structfield> is the union of all
+<structfield>capability</structfield> fields of each &v4l2-frequency-band;.
+</para></entry>
</row>
<row>
<entry>__u32</entry>
@@ -130,7 +134,9 @@ the structure refers to a radio tuner only the
<entry spanname="hspan">The lowest tunable frequency in
units of 62.5 kHz, or if the <structfield>capability</structfield>
flag <constant>V4L2_TUNER_CAP_LOW</constant> is set, in units of 62.5
-Hz.</entry>
+Hz. If multiple frequency bands are supported, then
+<structfield>rangelow</structfield> is the lowest frequency
+of all the frequency bands.</entry>
</row>
<row>
<entry>__u32</entry>
@@ -138,7 +144,9 @@ Hz.</entry>
<entry spanname="hspan">The highest tunable frequency in
units of 62.5 kHz, or if the <structfield>capability</structfield>
flag <constant>V4L2_TUNER_CAP_LOW</constant> is set, in units of 62.5
-Hz.</entry>
+Hz. If multiple frequency bands are supported, then
+<structfield>rangehigh</structfield> is the highest frequency
+of all the frequency bands.</entry>
</row>
<row>
<entry>__u32</entry>
@@ -276,6 +284,18 @@ can or must be switched. (B/G PAL tuners for example are typically not
<constant>V4L2_TUNER_ANALOG_TV</constant> tuners can have this capability.</entry>
</row>
<row>
+ <entry><constant>V4L2_TUNER_CAP_HWSEEK_BOUNDED</constant></entry>
+ <entry>0x0004</entry>
+ <entry>If set, then this tuner supports the hardware seek functionality
+ where the seek stops when it reaches the end of the frequency range.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_TUNER_CAP_HWSEEK_WRAP</constant></entry>
+ <entry>0x0008</entry>
+ <entry>If set, then this tuner supports the hardware seek functionality
+ where the seek wraps around when it reaches the end of the frequency range.</entry>
+ </row>
+ <row>
<entry><constant>V4L2_TUNER_CAP_STEREO</constant></entry>
<entry>0x0010</entry>
<entry>Stereo audio reception is supported.</entry>
@@ -328,6 +348,18 @@ radio tuners.</entry>
<entry>0x0200</entry>
<entry>The RDS data is parsed by the hardware and set via controls.</entry>
</row>
+ <row>
+ <entry><constant>V4L2_TUNER_CAP_FREQ_BANDS</constant></entry>
+ <entry>0x0400</entry>
+ <entry>The &VIDIOC-ENUM-FREQ-BANDS; ioctl can be used to enumerate
+ the available frequency bands.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_TUNER_CAP_HWSEEK_PROG_LIM</constant></entry>
+ <entry>0x0800</entry>
+ <entry>The range to search when using the hardware seek functionality
+ is programmable, see &VIDIOC-S-HW-FREQ-SEEK; for details.</entry>
+ </row>
</tbody>
</tgroup>
</table>
diff --git a/Documentation/DocBook/media/v4l/vidioc-qbuf.xml b/Documentation/DocBook/media/v4l/vidioc-qbuf.xml
index 9caa49af580..3504a7f2f38 100644
--- a/Documentation/DocBook/media/v4l/vidioc-qbuf.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-qbuf.xml
@@ -71,12 +71,9 @@ initialize the <structfield>bytesused</structfield>,
<structfield>field</structfield> and
<structfield>timestamp</structfield> fields, see <xref
linkend="buffer" /> for details.
-Applications must also set <structfield>flags</structfield> to 0. If a driver
-supports capturing from specific video inputs and you want to specify a video
-input, then <structfield>flags</structfield> should be set to
-<constant>V4L2_BUF_FLAG_INPUT</constant> and the field
-<structfield>input</structfield> must be initialized to the desired input.
-The <structfield>reserved</structfield> field must be set to 0. When using
+Applications must also set <structfield>flags</structfield> to 0.
+The <structfield>reserved2</structfield> and
+<structfield>reserved</structfield> fields must be set to 0. When using
the <link linkend="planar-apis">multi-planar API</link>, the
<structfield>m.planes</structfield> field must contain a userspace pointer
to a filled-in array of &v4l2-plane; and the <structfield>length</structfield>
@@ -112,6 +109,23 @@ they cannot be swapped out to disk. Buffers remain locked until
dequeued, until the &VIDIOC-STREAMOFF; or &VIDIOC-REQBUFS; ioctl is
called, or until the device is closed.</para>
+ <para>To enqueue a <link linkend="dmabuf">DMABUF</link> buffer applications
+set the <structfield>memory</structfield> field to
+<constant>V4L2_MEMORY_DMABUF</constant> and the <structfield>m.fd</structfield>
+field to a file descriptor associated with a DMABUF buffer. When the
+multi-planar API is used the <structfield>m.fd</structfield> fields of the
+passed array of &v4l2-plane; have to be used instead. When
+<constant>VIDIOC_QBUF</constant> is called with a pointer to this structure the
+driver sets the <constant>V4L2_BUF_FLAG_QUEUED</constant> flag and clears the
+<constant>V4L2_BUF_FLAG_MAPPED</constant> and
+<constant>V4L2_BUF_FLAG_DONE</constant> flags in the
+<structfield>flags</structfield> field, or it returns an error code. This
+ioctl locks the buffer. Locking a buffer means passing it to a driver for a
+hardware access (usually DMA). If an application accesses (reads/writes) a
+locked buffer then the result is undefined. Buffers remain locked until
+dequeued, until the &VIDIOC-STREAMOFF; or &VIDIOC-REQBUFS; ioctl is called, or
+until the device is closed.</para>
+
<para>Applications call the <constant>VIDIOC_DQBUF</constant>
ioctl to dequeue a filled (capturing) or displayed (output) buffer
from the driver's outgoing queue. They just set the
@@ -124,8 +138,7 @@ remaining fields or returns an error code. The driver may also set
field. It indicates a non-critical (recoverable) streaming error. In such case
the application may continue as normal, but should be aware that data in the
dequeued buffer might be corrupted. When using the multi-planar API, the
-planes array does not have to be passed; the <structfield>m.planes</structfield>
-member must be set to NULL in that case.</para>
+planes array must be passed in as well.</para>
<para>By default <constant>VIDIOC_DQBUF</constant> blocks when no
buffer is in the outgoing queue. When the
@@ -158,6 +171,8 @@ or no buffers have been allocated yet, or the
<structfield>userptr</structfield> or
<structfield>length</structfield> are invalid.</para>
</listitem>
+ </varlistentry>
+ <varlistentry>
<term><errorcode>EIO</errorcode></term>
<listitem>
<para><constant>VIDIOC_DQBUF</constant> failed due to an
diff --git a/Documentation/DocBook/media/v4l/vidioc-query-dv-preset.xml b/Documentation/DocBook/media/v4l/vidioc-query-dv-preset.xml
index 1bc8aeb3ff1..68b49d09e24 100644
--- a/Documentation/DocBook/media/v4l/vidioc-query-dv-preset.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-query-dv-preset.xml
@@ -65,5 +65,14 @@ returned.</para>
<refsect1>
&return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>ENODATA</errorcode></term>
+ <listitem>
+ <para>Digital video presets are not supported for this input or output.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
</refsect1>
</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-query-dv-timings.xml b/Documentation/DocBook/media/v4l/vidioc-query-dv-timings.xml
index 44935a0ffcf..e185f149e0a 100644
--- a/Documentation/DocBook/media/v4l/vidioc-query-dv-timings.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-query-dv-timings.xml
@@ -78,6 +78,12 @@ capabilities in order to give more precise feedback to the user.
<variablelist>
<varlistentry>
+ <term><errorcode>ENODATA</errorcode></term>
+ <listitem>
+ <para>Digital video timings are not supported for this input or output.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
<term><errorcode>ENOLINK</errorcode></term>
<listitem>
<para>No timings could be detected because no signal was found.
diff --git a/Documentation/DocBook/media/v4l/vidioc-querybuf.xml b/Documentation/DocBook/media/v4l/vidioc-querybuf.xml
index 6e414d7b6df..a597155c052 100644
--- a/Documentation/DocBook/media/v4l/vidioc-querybuf.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-querybuf.xml
@@ -48,8 +48,8 @@
<refsect1>
<title>Description</title>
- <para>This ioctl is part of the <link linkend="mmap">memory
-mapping</link> I/O method. It can be used to query the status of a
+ <para>This ioctl is part of the <link linkend="mmap">streaming
+</link> I/O method. It can be used to query the status of a
buffer at any time after buffers have been allocated with the
&VIDIOC-REQBUFS; ioctl.</para>
@@ -71,6 +71,7 @@ the structure.</para>
<para>In the <structfield>flags</structfield> field the
<constant>V4L2_BUF_FLAG_MAPPED</constant>,
+<constant>V4L2_BUF_FLAG_PREPARED</constant>,
<constant>V4L2_BUF_FLAG_QUEUED</constant> and
<constant>V4L2_BUF_FLAG_DONE</constant> flags will be valid. The
<structfield>memory</structfield> field will be set to the current
@@ -79,8 +80,10 @@ contains the offset of the buffer from the start of the device memory,
the <structfield>length</structfield> field its size. For the multi-planar API,
fields <structfield>m.mem_offset</structfield> and
<structfield>length</structfield> in the <structfield>m.planes</structfield>
-array elements will be used instead. The driver may or may not set the remaining
-fields and flags, they are meaningless in this context.</para>
+array elements will be used instead and the <structfield>length</structfield>
+field of &v4l2-buffer; is set to the number of filled-in array elements.
+The driver may or may not set the remaining fields and flags, they are
+meaningless in this context.</para>
<para>The <structname>v4l2_buffer</structname> structure is
specified in <xref linkend="buffer" />.</para>
diff --git a/Documentation/DocBook/media/v4l/vidioc-querycap.xml b/Documentation/DocBook/media/v4l/vidioc-querycap.xml
index 4643505cd4c..4c70215ae03 100644
--- a/Documentation/DocBook/media/v4l/vidioc-querycap.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-querycap.xml
@@ -90,11 +90,13 @@ ambiguities.</entry>
<entry>__u8</entry>
<entry><structfield>bus_info</structfield>[32]</entry>
<entry>Location of the device in the system, a
-NUL-terminated ASCII string. For example: "PCI Slot 4". This
+NUL-terminated ASCII string. For example: "PCI:0000:05:06.0". This
information is intended for users, to distinguish multiple
-identical devices. If no such information is available the field may
-simply count the devices controlled by the driver, or contain the
-empty string (<structfield>bus_info</structfield>[0] = 0).<!-- XXX pci_dev->slot_name example --></entry>
+identical devices. If no such information is available the field must
+simply count the devices controlled by the driver ("platform:vivi-000").
+The bus_info must start with "PCI:" for PCI boards, "PCIe:" for PCI Express boards,
+"usb-" for USB devices, "I2C:" for i2c devices, "ISA:" for ISA devices,
+"parport" for parallel port devices and "platform:" for platform devices.</entry>
</row>
<row>
<entry>__u32</entry>
@@ -192,6 +194,19 @@ linkend="output">Video Output</link> interface.</entry>
<link linkend="output">Video Output</link> interface.</entry>
</row>
<row>
+ <entry><constant>V4L2_CAP_VIDEO_M2M</constant></entry>
+ <entry>0x00004000</entry>
+ <entry>The device supports the single-planar API through the
+ Video Memory-To-Memory interface.</entry>
+ </row>
+ <row>
+ <entry><constant>V4L2_CAP_VIDEO_M2M_MPLANE</constant></entry>
+ <entry>0x00008000</entry>
+ <entry>The device supports the
+ <link linkend="planar-apis">multi-planar API</link> through the
+ Video Memory-To-Memory interface.</entry>
+ </row>
+ <row>
<entry><constant>V4L2_CAP_VIDEO_OVERLAY</constant></entry>
<entry>0x00000004</entry>
<entry>The device supports the <link
diff --git a/Documentation/DocBook/media/v4l/vidioc-querystd.xml b/Documentation/DocBook/media/v4l/vidioc-querystd.xml
index 4b79c7c04ed..fe80a183d95 100644
--- a/Documentation/DocBook/media/v4l/vidioc-querystd.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-querystd.xml
@@ -62,5 +62,13 @@ current video input or output.</para>
<refsect1>
&return-value;
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>ENODATA</errorcode></term>
+ <listitem>
+ <para>Standard video timings are not supported for this input or output.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
</refsect1>
</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-reqbufs.xml b/Documentation/DocBook/media/v4l/vidioc-reqbufs.xml
index d7c95057bc5..78a06a9a5ec 100644
--- a/Documentation/DocBook/media/v4l/vidioc-reqbufs.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-reqbufs.xml
@@ -48,28 +48,30 @@
<refsect1>
<title>Description</title>
- <para>This ioctl is used to initiate <link linkend="mmap">memory
-mapped</link> or <link linkend="userp">user pointer</link>
-I/O. Memory mapped buffers are located in device memory and must be
-allocated with this ioctl before they can be mapped into the
-application's address space. User buffers are allocated by
-applications themselves, and this ioctl is merely used to switch the
-driver into user pointer I/O mode and to setup some internal structures.</para>
+<para>This ioctl is used to initiate <link linkend="mmap">memory mapped</link>,
+<link linkend="userp">user pointer</link> or <link
+linkend="dmabuf">DMABUF</link> based I/O. Memory mapped buffers are located in
+device memory and must be allocated with this ioctl before they can be mapped
+into the application's address space. User buffers are allocated by
+applications themselves, and this ioctl is merely used to switch the driver
+into user pointer I/O mode and to setup some internal structures.
+Similarly, DMABUF buffers are allocated by applications through a device
+driver, and this ioctl only configures the driver into DMABUF I/O mode without
+performing any direct allocation.</para>
- <para>To allocate device buffers applications initialize all
-fields of the <structname>v4l2_requestbuffers</structname> structure.
-They set the <structfield>type</structfield> field to the respective
-stream or buffer type, the <structfield>count</structfield> field to
-the desired number of buffers, <structfield>memory</structfield>
-must be set to the requested I/O method and the <structfield>reserved</structfield> array
-must be zeroed. When the ioctl
-is called with a pointer to this structure the driver will attempt to allocate
-the requested number of buffers and it stores the actual number
-allocated in the <structfield>count</structfield> field. It can be
-smaller than the number requested, even zero, when the driver runs out
-of free memory. A larger number is also possible when the driver requires
-more buffers to function correctly. For example video output requires at least two buffers,
-one displayed and one filled by the application.</para>
+ <para>To allocate device buffers applications initialize all fields of the
+<structname>v4l2_requestbuffers</structname> structure. They set the
+<structfield>type</structfield> field to the respective stream or buffer type,
+the <structfield>count</structfield> field to the desired number of buffers,
+<structfield>memory</structfield> must be set to the requested I/O method and
+the <structfield>reserved</structfield> array must be zeroed. When the ioctl is
+called with a pointer to this structure the driver will attempt to allocate the
+requested number of buffers and it stores the actual number allocated in the
+<structfield>count</structfield> field. It can be smaller than the number
+requested, even zero, when the driver runs out of free memory. A larger number
+is also possible when the driver requires more buffers to function correctly.
+For example video output requires at least two buffers, one displayed and one
+filled by the application.</para>
<para>When the I/O method is not supported the ioctl
returns an &EINVAL;.</para>
@@ -102,16 +104,16 @@ as the &v4l2-format; <structfield>type</structfield> field. See <xref
<entry>__u32</entry>
<entry><structfield>memory</structfield></entry>
<entry>Applications set this field to
-<constant>V4L2_MEMORY_MMAP</constant> or
+<constant>V4L2_MEMORY_MMAP</constant>,
+<constant>V4L2_MEMORY_DMABUF</constant> or
<constant>V4L2_MEMORY_USERPTR</constant>. See <xref linkend="v4l2-memory"
/>.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>reserved</structfield>[2]</entry>
- <entry>A place holder for future extensions and custom
-(driver defined) buffer types <constant>V4L2_BUF_TYPE_PRIVATE</constant> and
-higher. This array should be zeroed by applications.</entry>
+ <entry>A place holder for future extensions. This array should
+be zeroed by applications.</entry>
</row>
</tbody>
</tgroup>
diff --git a/Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml b/Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml
index 407dfceb71f..5b379e75219 100644
--- a/Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml
@@ -52,14 +52,32 @@
<para>Start a hardware frequency seek from the current frequency.
To do this applications initialize the <structfield>tuner</structfield>,
<structfield>type</structfield>, <structfield>seek_upward</structfield>,
-<structfield>spacing</structfield> and
-<structfield>wrap_around</structfield> fields, and zero out the
-<structfield>reserved</structfield> array of a &v4l2-hw-freq-seek; and
-call the <constant>VIDIOC_S_HW_FREQ_SEEK</constant> ioctl with a pointer
-to this structure.</para>
+<structfield>wrap_around</structfield>, <structfield>spacing</structfield>,
+<structfield>rangelow</structfield> and <structfield>rangehigh</structfield>
+fields, and zero out the <structfield>reserved</structfield> array of a
+&v4l2-hw-freq-seek; and call the <constant>VIDIOC_S_HW_FREQ_SEEK</constant>
+ioctl with a pointer to this structure.</para>
+
+ <para>The <structfield>rangelow</structfield> and
+<structfield>rangehigh</structfield> fields can be set to a non-zero value to
+tell the driver to search a specific band. If the &v4l2-tuner;
+<structfield>capability</structfield> field has the
+<constant>V4L2_TUNER_CAP_HWSEEK_PROG_LIM</constant> flag set, these values
+must fall within one of the bands returned by &VIDIOC-ENUM-FREQ-BANDS;. If
+the <constant>V4L2_TUNER_CAP_HWSEEK_PROG_LIM</constant> flag is not set,
+then these values must exactly match those of one of the bands returned by
+&VIDIOC-ENUM-FREQ-BANDS;. If the current frequency of the tuner does not fall
+within the selected band it will be clamped to fit in the band before the
+seek is started.</para>
+
+ <para>If an error is returned, then the original frequency will
+ be restored.</para>
<para>This ioctl is supported if the <constant>V4L2_CAP_HW_FREQ_SEEK</constant> capability is set.</para>
+ <para>If this ioctl is called from a non-blocking filehandle, then &EAGAIN; is
+ returned and no seek takes place.</para>
+
<table pgwide="1" frame="none" id="v4l2-hw-freq-seek">
<title>struct <structname>v4l2_hw_freq_seek</structname></title>
<tgroup cols="3">
@@ -87,7 +105,10 @@ field and the &v4l2-tuner; <structfield>index</structfield> field.</entry>
<row>
<entry>__u32</entry>
<entry><structfield>wrap_around</structfield></entry>
- <entry>If non-zero, wrap around when at the end of the frequency range, else stop seeking.</entry>
+ <entry>If non-zero, wrap around when at the end of the frequency range, else stop seeking.
+ The &v4l2-tuner; <structfield>capability</structfield> field will tell you what the
+ hardware supports.
+ </entry>
</row>
<row>
<entry>__u32</entry>
@@ -96,7 +117,27 @@ field and the &v4l2-tuner; <structfield>index</structfield> field.</entry>
</row>
<row>
<entry>__u32</entry>
- <entry><structfield>reserved</structfield>[7]</entry>
+ <entry><structfield>rangelow</structfield></entry>
+ <entry>If non-zero, the lowest tunable frequency of the band to
+search in units of 62.5 kHz, or if the &v4l2-tuner;
+<structfield>capability</structfield> field has the
+<constant>V4L2_TUNER_CAP_LOW</constant> flag set, in units of 62.5 Hz.
+If <structfield>rangelow</structfield> is zero a reasonable default value
+is used.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>rangehigh</structfield></entry>
+ <entry>If non-zero, the highest tunable frequency of the band to
+search in units of 62.5 kHz, or if the &v4l2-tuner;
+<structfield>capability</structfield> field has the
+<constant>V4L2_TUNER_CAP_LOW</constant> flag set, in units of 62.5 Hz.
+If <structfield>rangehigh</structfield> is zero a reasonable default value
+is used.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield>[5]</entry>
<entry>Reserved for future extensions. Applications
must set the array to zero.</entry>
</row>
@@ -113,14 +154,29 @@ field and the &v4l2-tuner; <structfield>index</structfield> field.</entry>
<term><errorcode>EINVAL</errorcode></term>
<listitem>
<para>The <structfield>tuner</structfield> index is out of
-bounds, the wrap_around value is not supported or the value in the <structfield>type</structfield> field is
-wrong.</para>
+bounds, the <structfield>wrap_around</structfield> value is not supported or
+one of the values in the <structfield>type</structfield>,
+<structfield>rangelow</structfield> or <structfield>rangehigh</structfield>
+fields is wrong.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><errorcode>EAGAIN</errorcode></term>
<listitem>
- <para>The ioctl timed-out. Try again.</para>
+ <para>Attempted to call <constant>VIDIOC_S_HW_FREQ_SEEK</constant>
+ with the filehandle in non-blocking mode.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>ENODATA</errorcode></term>
+ <listitem>
+ <para>The hardware seek found no channels.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>EBUSY</errorcode></term>
+ <listitem>
+ <para>Another hardware seek is already in progress.</para>
</listitem>
</varlistentry>
</variablelist>
diff --git a/Documentation/DocBook/media/v4l/vidioc-streamon.xml b/Documentation/DocBook/media/v4l/vidioc-streamon.xml
index 81cca456905..716ea15e54a 100644
--- a/Documentation/DocBook/media/v4l/vidioc-streamon.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-streamon.xml
@@ -74,7 +74,12 @@ not transmitted yet. I/O returns to the same state as after calling
stream type. This is the same as &v4l2-requestbuffers;
<structfield>type</structfield>.</para>
- <para>Note applications can be preempted for unknown periods right
+ <para>If <constant>VIDIOC_STREAMON</constant> is called when streaming
+is already in progress, or if <constant>VIDIOC_STREAMOFF</constant> is called
+when streaming is already stopped, then the ioctl does nothing and 0 is
+returned.</para>
+
+ <para>Note that applications can be preempted for unknown periods right
before or after the <constant>VIDIOC_STREAMON</constant> or
<constant>VIDIOC_STREAMOFF</constant> calls, there is no notion of
starting or stopping "now". Buffer timestamps can be used to
diff --git a/Documentation/DocBook/media/v4l/vidioc-subdev-g-edid.xml b/Documentation/DocBook/media/v4l/vidioc-subdev-g-edid.xml
new file mode 100644
index 00000000000..bbd18f0e6ed
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/vidioc-subdev-g-edid.xml
@@ -0,0 +1,152 @@
+<refentry id="vidioc-subdev-g-edid">
+ <refmeta>
+ <refentrytitle>ioctl VIDIOC_SUBDEV_G_EDID, VIDIOC_SUBDEV_S_EDID</refentrytitle>
+ &manvol;
+ </refmeta>
+
+ <refnamediv>
+ <refname>VIDIOC_SUBDEV_G_EDID</refname>
+ <refname>VIDIOC_SUBDEV_S_EDID</refname>
+ <refpurpose>Get or set the EDID of a video receiver/transmitter</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>struct v4l2_subdev_edid *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>int <function>ioctl</function></funcdef>
+ <paramdef>int <parameter>fd</parameter></paramdef>
+ <paramdef>int <parameter>request</parameter></paramdef>
+ <paramdef>const struct v4l2_subdev_edid *<parameter>argp</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Arguments</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><parameter>fd</parameter></term>
+ <listitem>
+ <para>&fd;</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>request</parameter></term>
+ <listitem>
+ <para>VIDIOC_SUBDEV_G_EDID, VIDIOC_SUBDEV_S_EDID</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><parameter>argp</parameter></term>
+ <listitem>
+ <para></para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Description</title>
+ <para>These ioctls can be used to get or set an EDID associated with an input pad
+ from a receiver or an output pad of a transmitter subdevice.</para>
+
+ <para>To get the EDID data the application has to fill in the <structfield>pad</structfield>,
+ <structfield>start_block</structfield>, <structfield>blocks</structfield> and <structfield>edid</structfield>
+ fields and call <constant>VIDIOC_SUBDEV_G_EDID</constant>. The current EDID from block
+ <structfield>start_block</structfield> and of size <structfield>blocks</structfield>
+ will be placed in the memory <structfield>edid</structfield> points to. The <structfield>edid</structfield>
+ pointer must point to memory at least <structfield>blocks</structfield>&nbsp;*&nbsp;128 bytes
+ large (the size of one block is 128 bytes).</para>
+
+ <para>If there are fewer blocks than specified, then the driver will set <structfield>blocks</structfield>
+ to the actual number of blocks. If there are no EDID blocks available at all, then the error code
+ ENODATA is set.</para>
+
+ <para>If blocks have to be retrieved from the sink, then this call will block until they
+ have been read.</para>
+
+ <para>To set the EDID blocks of a receiver the application has to fill in the <structfield>pad</structfield>,
+ <structfield>blocks</structfield> and <structfield>edid</structfield> fields and set
+ <structfield>start_block</structfield> to 0. It is not possible to set part of an EDID,
+ it is always all or nothing. Setting the EDID data is only valid for receivers as it makes
+ no sense for a transmitter.</para>
+
+ <para>The driver assumes that the full EDID is passed in. If there are more EDID blocks than
+ the hardware can handle then the EDID is not written, but instead the error code E2BIG is set
+ and <structfield>blocks</structfield> is set to the maximum that the hardware supports.
+ If <structfield>start_block</structfield> is any
+ value other than 0 then the error code EINVAL is set.</para>
+
+ <para>To disable an EDID you set <structfield>blocks</structfield> to 0. Depending on the
+ hardware this will drive the hotplug pin low and/or block the source from reading the EDID
+ data in some way. In any case, the end result is the same: the EDID is no longer available.
+ </para>
+
+ <table pgwide="1" frame="none" id="v4l2-subdev-edid">
+ <title>struct <structname>v4l2_subdev_edid</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>pad</structfield></entry>
+ <entry>Pad for which to get/set the EDID blocks.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>start_block</structfield></entry>
+ <entry>Read the EDID from starting with this block. Must be 0 when setting
+ the EDID.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>blocks</structfield></entry>
+ <entry>The number of blocks to get or set. Must be less or equal to 256 (the
+ maximum number of blocks as defined by the standard). When you set the EDID and
+ <structfield>blocks</structfield> is 0, then the EDID is disabled or erased.</entry>
+ </row>
+ <row>
+ <entry>__u8&nbsp;*</entry>
+ <entry><structfield>edid</structfield></entry>
+ <entry>Pointer to memory that contains the EDID. The minimum size is
+ <structfield>blocks</structfield>&nbsp;*&nbsp;128.</entry>
+ </row>
+ <row>
+ <entry>__u32</entry>
+ <entry><structfield>reserved</structfield>[5]</entry>
+ <entry>Reserved for future extensions. Applications and drivers must
+ set the array to zero.</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <refsect1>
+ &return-value;
+
+ <variablelist>
+ <varlistentry>
+ <term><errorcode>ENODATA</errorcode></term>
+ <listitem>
+ <para>The EDID data is not available.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><errorcode>E2BIG</errorcode></term>
+ <listitem>
+ <para>The EDID data you provided is more than the hardware can handle.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+</refentry>
diff --git a/Documentation/DocBook/media/v4l/vidioc-subdev-g-selection.xml b/Documentation/DocBook/media/v4l/vidioc-subdev-g-selection.xml
index 208e9f0da3f..1ba9e999af3 100644
--- a/Documentation/DocBook/media/v4l/vidioc-subdev-g-selection.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-subdev-g-selection.xml
@@ -69,89 +69,25 @@
more information on how each selection target affects the image
processing pipeline inside the subdevice.</para>
- <section>
+ <refsect2>
<title>Types of selection targets</title>
- <para>There are two types of selection targets: actual and bounds.
- The ACTUAL targets are the targets which configure the hardware.
- The BOUNDS target will return a rectangle that contain all
- possible ACTUAL rectangles.</para>
- </section>
+ <para>There are two types of selection targets: actual and bounds. The
+ actual targets are the targets which configure the hardware. The BOUNDS
+ target will return a rectangle that contain all possible actual
+ rectangles.</para>
+ </refsect2>
- <section>
+ <refsect2>
<title>Discovering supported features</title>
<para>To discover which targets are supported, the user can
perform <constant>VIDIOC_SUBDEV_G_SELECTION</constant> on them.
Any unsupported target will return
<constant>EINVAL</constant>.</para>
- </section>
- <table pgwide="1" frame="none" id="v4l2-subdev-selection-targets">
- <title>V4L2 subdev selection targets</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_SUBDEV_SEL_TGT_CROP_ACTUAL</constant></entry>
- <entry>0x0000</entry>
- <entry>Actual crop. Defines the cropping
- performed by the processing step.</entry>
- </row>
- <row>
- <entry><constant>V4L2_SUBDEV_SEL_TGT_CROP_BOUNDS</constant></entry>
- <entry>0x0002</entry>
- <entry>Bounds of the crop rectangle.</entry>
- </row>
- <row>
- <entry><constant>V4L2_SUBDEV_SEL_TGT_COMPOSE_ACTUAL</constant></entry>
- <entry>0x0100</entry>
- <entry>Actual compose rectangle. Used to configure scaling
- on sink pads and composition on source pads.</entry>
- </row>
- <row>
- <entry><constant>V4L2_SUBDEV_SEL_TGT_COMPOSE_BOUNDS</constant></entry>
- <entry>0x0102</entry>
- <entry>Bounds of the compose rectangle.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
-
- <table pgwide="1" frame="none" id="v4l2-subdev-selection-flags">
- <title>V4L2 subdev selection flags</title>
- <tgroup cols="3">
- &cs-def;
- <tbody valign="top">
- <row>
- <entry><constant>V4L2_SUBDEV_SEL_FLAG_SIZE_GE</constant></entry>
- <entry>(1 &lt;&lt; 0)</entry> <entry>Suggest the driver it
- should choose greater or equal rectangle (in size) than
- was requested. Albeit the driver may choose a lesser size,
- it will only do so due to hardware limitations. Without
- this flag (and
- <constant>V4L2_SUBDEV_SEL_FLAG_SIZE_LE</constant>) the
- behaviour is to choose the closest possible
- rectangle.</entry>
- </row>
- <row>
- <entry><constant>V4L2_SUBDEV_SEL_FLAG_SIZE_LE</constant></entry>
- <entry>(1 &lt;&lt; 1)</entry> <entry>Suggest the driver it
- should choose lesser or equal rectangle (in size) than was
- requested. Albeit the driver may choose a greater size, it
- will only do so due to hardware limitations.</entry>
- </row>
- <row>
- <entry><constant>V4L2_SUBDEV_SEL_FLAG_KEEP_CONFIG</constant></entry>
- <entry>(1 &lt;&lt; 2)</entry>
- <entry>The configuration should not be propagated to any
- further processing steps. If this flag is not given, the
- configuration is propagated inside the subdevice to all
- further processing steps.</entry>
- </row>
- </tbody>
- </tgroup>
- </table>
+ <para>Selection targets and flags are documented in <xref
+ linkend="v4l2-selections-common"/>.</para>
<table pgwide="1" frame="none" id="v4l2-subdev-selection">
<title>struct <structname>v4l2_subdev_selection</structname></title>
@@ -173,13 +109,13 @@
<entry>__u32</entry>
<entry><structfield>target</structfield></entry>
<entry>Target selection rectangle. See
- <xref linkend="v4l2-subdev-selection-targets">.</xref>.</entry>
+ <xref linkend="v4l2-selections-common" />.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>flags</structfield></entry>
<entry>Flags. See
- <xref linkend="v4l2-subdev-selection-flags">.</xref></entry>
+ <xref linkend="v4l2-selection-flags" />.</entry>
</row>
<row>
<entry>&v4l2-rect;</entry>
@@ -195,6 +131,7 @@
</tbody>
</tgroup>
</table>
+ </refsect2>
</refsect1>
diff --git a/Documentation/DocBook/media_api.tmpl b/Documentation/DocBook/media_api.tmpl
index 4e8e8985cc1..f2413acfe24 100644
--- a/Documentation/DocBook/media_api.tmpl
+++ b/Documentation/DocBook/media_api.tmpl
@@ -29,7 +29,7 @@
<title>LINUX MEDIA INFRASTRUCTURE API</title>
<copyright>
- <year>2009-2011</year>
+ <year>2009-2012</year>
<holder>LinuxTV Developers</holder>
</copyright>
@@ -53,7 +53,7 @@ Foundation. A copy of the license is included in the chapter entitled
video and radio straming devices, including video cameras,
analog and digital TV receiver cards, AM/FM receiver cards,
streaming capture devices.</para>
- <para>It is divided into three parts.</para>
+ <para>It is divided into four parts.</para>
<para>The first part covers radio, capture,
cameras and analog TV devices.</para>
<para>The second part covers the
@@ -62,7 +62,8 @@ Foundation. A copy of the license is included in the chapter entitled
in fact it covers several different video standards including
DVB-T, DVB-S, DVB-C and ATSC. The API is currently being updated
to documment support also for DVB-S2, ISDB-T and ISDB-S.</para>
- <para>The third part covers Remote Controller API</para>
+ <para>The third part covers the Remote Controller API.</para>
+ <para>The fourth part covers the Media Controller API.</para>
<para>For additional information and for the latest development code,
see: <ulink url="http://linuxtv.org">http://linuxtv.org</ulink>.</para>
<para>For discussing improvements, reporting troubles, sending new drivers, etc, please mail to: <ulink url="http://vger.kernel.org/vger-lists.html#linux-media">Linux Media Mailing List (LMML).</ulink>.</para>
@@ -87,7 +88,7 @@ Foundation. A copy of the license is included in the chapter entitled
</author>
</authorgroup>
<copyright>
- <year>2009-2011</year>
+ <year>2009-2012</year>
<holder>Mauro Carvalho Chehab</holder>
</copyright>
diff --git a/Documentation/DocBook/mtdnand.tmpl b/Documentation/DocBook/mtdnand.tmpl
index e0aedb7a782..fe122d6e686 100644
--- a/Documentation/DocBook/mtdnand.tmpl
+++ b/Documentation/DocBook/mtdnand.tmpl
@@ -1216,8 +1216,6 @@ in this page</entry>
#define NAND_BBT_LASTBLOCK 0x00000010
/* The bbt is at the given page, else we must scan for the bbt */
#define NAND_BBT_ABSPAGE 0x00000020
-/* The bbt is at the given page, else we must scan for the bbt */
-#define NAND_BBT_SEARCH 0x00000040
/* bbt is stored per chip on multichip devices */
#define NAND_BBT_PERCHIP 0x00000080
/* bbt has a version counter at offset veroffs */
diff --git a/Documentation/DocBook/networking.tmpl b/Documentation/DocBook/networking.tmpl
index 59ad69a9d77..29df25016c7 100644
--- a/Documentation/DocBook/networking.tmpl
+++ b/Documentation/DocBook/networking.tmpl
@@ -56,7 +56,7 @@
!Enet/core/filter.c
</sect1>
<sect1><title>Generic Network Statistics</title>
-!Iinclude/linux/gen_stats.h
+!Iinclude/uapi/linux/gen_stats.h
!Enet/core/gen_stats.c
!Enet/core/gen_estimator.c
</sect1>
@@ -80,7 +80,7 @@
!Enet/wimax/op-rfkill.c
!Enet/wimax/stack.c
!Iinclude/net/wimax.h
-!Iinclude/linux/wimax.h
+!Iinclude/uapi/linux/wimax.h
</sect1>
</chapter>
diff --git a/Documentation/DocBook/uio-howto.tmpl b/Documentation/DocBook/uio-howto.tmpl
index ac3d0018140..ddb05e98af0 100644
--- a/Documentation/DocBook/uio-howto.tmpl
+++ b/Documentation/DocBook/uio-howto.tmpl
@@ -719,6 +719,62 @@ framework to set up sysfs files for this region. Simply leave it alone.
</para>
</sect1>
+<sect1 id="using uio_dmem_genirq">
+<title>Using uio_dmem_genirq for platform devices</title>
+ <para>
+ In addition to statically allocated memory ranges, they may also be
+ a desire to use dynamically allocated regions in a user space driver.
+ In particular, being able to access memory made available through the
+ dma-mapping API, may be particularly useful. The
+ <varname>uio_dmem_genirq</varname> driver provides a way to accomplish
+ this.
+ </para>
+ <para>
+ This driver is used in a similar manner to the
+ <varname>"uio_pdrv_genirq"</varname> driver with respect to interrupt
+ configuration and handling.
+ </para>
+ <para>
+ Set the <varname>.name</varname> element of
+ <varname>struct platform_device</varname> to
+ <varname>"uio_dmem_genirq"</varname> to use this driver.
+ </para>
+ <para>
+ When using this driver, fill in the <varname>.platform_data</varname>
+ element of <varname>struct platform_device</varname>, which is of type
+ <varname>struct uio_dmem_genirq_pdata</varname> and which contains the
+ following elements:
+ </para>
+ <itemizedlist>
+ <listitem><varname>struct uio_info uioinfo</varname>: The same
+ structure used as the <varname>uio_pdrv_genirq</varname> platform
+ data</listitem>
+ <listitem><varname>unsigned int *dynamic_region_sizes</varname>:
+ Pointer to list of sizes of dynamic memory regions to be mapped into
+ user space.
+ </listitem>
+ <listitem><varname>unsigned int num_dynamic_regions</varname>:
+ Number of elements in <varname>dynamic_region_sizes</varname> array.
+ </listitem>
+ </itemizedlist>
+ <para>
+ The dynamic regions defined in the platform data will be appended to
+ the <varname> mem[] </varname> array after the platform device
+ resources, which implies that the total number of static and dynamic
+ memory regions cannot exceed <varname>MAX_UIO_MAPS</varname>.
+ </para>
+ <para>
+ The dynamic memory regions will be allocated when the UIO device file,
+ <varname>/dev/uioX</varname> is opened.
+ Simiar to static memory resources, the memory region information for
+ dynamic regions is then visible via sysfs at
+ <varname>/sys/class/uio/uioX/maps/mapY/*</varname>.
+ The dynmaic memory regions will be freed when the UIO device file is
+ closed. When no processes are holding the device file open, the address
+ returned to userspace is ~0.
+ </para>
+</sect1>
+
</chapter>
<chapter id="userspace_driver" xreflabel="Writing a driver in user space">
diff --git a/Documentation/DocBook/writing-an-alsa-driver.tmpl b/Documentation/DocBook/writing-an-alsa-driver.tmpl
index cab4ec58e46..fb32aead5a0 100644
--- a/Documentation/DocBook/writing-an-alsa-driver.tmpl
+++ b/Documentation/DocBook/writing-an-alsa-driver.tmpl
@@ -433,9 +433,9 @@
/* chip-specific constructor
* (see "Management of Cards and Components")
*/
- static int __devinit snd_mychip_create(struct snd_card *card,
- struct pci_dev *pci,
- struct mychip **rchip)
+ static int snd_mychip_create(struct snd_card *card,
+ struct pci_dev *pci,
+ struct mychip **rchip)
{
struct mychip *chip;
int err;
@@ -475,8 +475,8 @@
}
/* constructor -- see "Constructor" sub-section */
- static int __devinit snd_mychip_probe(struct pci_dev *pci,
- const struct pci_device_id *pci_id)
+ static int snd_mychip_probe(struct pci_dev *pci,
+ const struct pci_device_id *pci_id)
{
static int dev;
struct snd_card *card;
@@ -526,7 +526,7 @@
}
/* destructor -- see the "Destructor" sub-section */
- static void __devexit snd_mychip_remove(struct pci_dev *pci)
+ static void snd_mychip_remove(struct pci_dev *pci)
{
snd_card_free(pci_get_drvdata(pci));
pci_set_drvdata(pci, NULL);
@@ -542,9 +542,8 @@
<para>
The real constructor of PCI drivers is the <function>probe</function> callback.
The <function>probe</function> callback and other component-constructors which are called
- from the <function>probe</function> callback should be defined with
- the <parameter>__devinit</parameter> prefix. You
- cannot use the <parameter>__init</parameter> prefix for them,
+ from the <function>probe</function> callback cannot be used with
+ the <parameter>__init</parameter> prefix
because any PCI device could be a hotplug device.
</para>
@@ -728,7 +727,7 @@
<informalexample>
<programlisting>
<![CDATA[
- static void __devexit snd_mychip_remove(struct pci_dev *pci)
+ static void snd_mychip_remove(struct pci_dev *pci)
{
snd_card_free(pci_get_drvdata(pci));
pci_set_drvdata(pci, NULL);
@@ -1059,14 +1058,6 @@
</para>
<para>
- As further notes, the destructors (both
- <function>snd_mychip_dev_free</function> and
- <function>snd_mychip_free</function>) cannot be defined with
- the <parameter>__devexit</parameter> prefix, because they may be
- called from the constructor, too, at the false path.
- </para>
-
- <para>
For a device which allows hotplugging, you can use
<function>snd_card_free_when_closed</function>. This one will
postpone the destruction until all devices are closed.
@@ -1120,9 +1111,9 @@
}
/* chip-specific constructor */
- static int __devinit snd_mychip_create(struct snd_card *card,
- struct pci_dev *pci,
- struct mychip **rchip)
+ static int snd_mychip_create(struct snd_card *card,
+ struct pci_dev *pci,
+ struct mychip **rchip)
{
struct mychip *chip;
int err;
@@ -1200,7 +1191,7 @@
.name = KBUILD_MODNAME,
.id_table = snd_mychip_ids,
.probe = snd_mychip_probe,
- .remove = __devexit_p(snd_mychip_remove),
+ .remove = snd_mychip_remove,
};
/* module initialization */
@@ -1465,11 +1456,6 @@
</para>
<para>
- Again, remember that you cannot
- use the <parameter>__devexit</parameter> prefix for this destructor.
- </para>
-
- <para>
We didn't implement the hardware disabling part in the above.
If you need to do this, please note that the destructor may be
called even before the initialization of the chip is completed.
@@ -1619,7 +1605,7 @@
.name = KBUILD_MODNAME,
.id_table = snd_mychip_ids,
.probe = snd_mychip_probe,
- .remove = __devexit_p(snd_mychip_remove),
+ .remove = snd_mychip_remove,
};
]]>
</programlisting>
@@ -1630,11 +1616,7 @@
The <structfield>probe</structfield> and
<structfield>remove</structfield> functions have already
been defined in the previous sections.
- The <structfield>remove</structfield> function should
- be defined with the
- <function>__devexit_p()</function> macro, so that it's not
- defined for built-in (and non-hot-pluggable) case. The
- <structfield>name</structfield>
+ The <structfield>name</structfield>
field is the name string of this device. Note that you must not
use a slash <quote>/</quote> in this string.
</para>
@@ -1665,9 +1647,7 @@
<para>
Note that these module entries are tagged with
<parameter>__init</parameter> and
- <parameter>__exit</parameter> prefixes, not
- <parameter>__devinit</parameter> nor
- <parameter>__devexit</parameter>.
+ <parameter>__exit</parameter> prefixes.
</para>
<para>
@@ -1918,7 +1898,7 @@
*/
/* create a pcm device */
- static int __devinit snd_mychip_new_pcm(struct mychip *chip)
+ static int snd_mychip_new_pcm(struct mychip *chip)
{
struct snd_pcm *pcm;
int err;
@@ -1957,7 +1937,7 @@
<informalexample>
<programlisting>
<![CDATA[
- static int __devinit snd_mychip_new_pcm(struct mychip *chip)
+ static int snd_mychip_new_pcm(struct mychip *chip)
{
struct snd_pcm *pcm;
int err;
@@ -2124,7 +2104,7 @@
....
}
- static int __devinit snd_mychip_new_pcm(struct mychip *chip)
+ static int snd_mychip_new_pcm(struct mychip *chip)
{
struct snd_pcm *pcm;
....
@@ -3399,7 +3379,7 @@ struct _snd_pcm_runtime {
<title>Definition of a Control</title>
<programlisting>
<![CDATA[
- static struct snd_kcontrol_new my_control __devinitdata = {
+ static struct snd_kcontrol_new my_control = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "PCM Playback Switch",
.index = 0,
@@ -3415,13 +3395,6 @@ struct _snd_pcm_runtime {
</para>
<para>
- Most likely the control is created via
- <function>snd_ctl_new1()</function>, and in such a case, you can
- add the <parameter>__devinitdata</parameter> prefix to the
- definition as above.
- </para>
-
- <para>
The <structfield>iface</structfield> field specifies the control
type, <constant>SNDRV_CTL_ELEM_IFACE_XXX</constant>, which
is usually <constant>MIXER</constant>.
@@ -3847,10 +3820,8 @@ struct _snd_pcm_runtime {
<para>
<function>snd_ctl_new1()</function> allocates a new
- <structname>snd_kcontrol</structname> instance (that's why the definition
- of <parameter>my_control</parameter> can be with
- the <parameter>__devinitdata</parameter>
- prefix), and <function>snd_ctl_add</function> assigns the given
+ <structname>snd_kcontrol</structname> instance,
+ and <function>snd_ctl_add</function> assigns the given
control component to the card.
</para>
</section>
@@ -3896,7 +3867,7 @@ struct _snd_pcm_runtime {
<![CDATA[
static DECLARE_TLV_DB_SCALE(db_scale_my_control, -4050, 150, 0);
- static struct snd_kcontrol_new my_control __devinitdata = {
+ static struct snd_kcontrol_new my_control = {
...
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
SNDRV_CTL_ELEM_ACCESS_TLV_READ,
@@ -5761,8 +5732,8 @@ struct _snd_pcm_runtime {
<informalexample>
<programlisting>
<![CDATA[
- static int __devinit snd_mychip_probe(struct pci_dev *pci,
- const struct pci_device_id *pci_id)
+ static int snd_mychip_probe(struct pci_dev *pci,
+ const struct pci_device_id *pci_id)
{
....
struct snd_card *card;
@@ -5787,8 +5758,8 @@ struct _snd_pcm_runtime {
<informalexample>
<programlisting>
<![CDATA[
- static int __devinit snd_mychip_probe(struct pci_dev *pci,
- const struct pci_device_id *pci_id)
+ static int snd_mychip_probe(struct pci_dev *pci,
+ const struct pci_device_id *pci_id)
{
....
struct snd_card *card;
@@ -5825,7 +5796,7 @@ struct _snd_pcm_runtime {
.name = KBUILD_MODNAME,
.id_table = snd_my_ids,
.probe = snd_my_probe,
- .remove = __devexit_p(snd_my_remove),
+ .remove = snd_my_remove,
#ifdef CONFIG_PM
.suspend = snd_my_suspend,
.resume = snd_my_resume,