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authorSylwester Nawrocki <s.nawrocki@samsung.com>2012-07-26 09:30:00 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-07-30 19:31:53 -0300
commitf0476a83d61a8004eb535a0b65721ca405421fe8 (patch)
tree090e739691637494b9438412914ae91598ee017d
parent6126b912c84240692e26c1b820a7097610eddf34 (diff)
[media] V4L: Add capability flags for memory-to-memory devices
This patch adds new V4L2_CAP_VIDEO_M2M and V4L2_CAP_VIDEO_M2M_MPLANE capability flags that are intended to be used for memory-to-memory (M2M) devices, instead of ORed V4L2_CAP_VIDEO_CAPTURE and V4L2_CAP_VIDEO_OUTPUT. V4L2_CAP_VIDEO_M2M flag is added at the drivers, CAPTURE and OUTPUT capability flags are left untouched and will be removed in future, after a transition period required for existing applications to be adapted to check only for V4L2_CAP_VIDEO_M2M. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Kamil Debski <k.debski@samsung.com> Acked-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
-rw-r--r--Documentation/DocBook/media/v4l/compat.xml9
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-querycap.xml13
-rw-r--r--drivers/media/video/mem2mem_testdev.c3
-rw-r--r--drivers/media/video/mx2_emmaprp.c10
-rw-r--r--drivers/media/video/s5p-fimc/fimc-m2m.c7
-rw-r--r--drivers/media/video/s5p-g2d/g2d.c9
-rw-r--r--drivers/media/video/s5p-jpeg/jpeg-core.c10
-rw-r--r--drivers/media/video/s5p-mfc/s5p_mfc_dec.c10
-rw-r--r--drivers/media/video/s5p-mfc/s5p_mfc_enc.c11
-rw-r--r--include/linux/videodev2.h4
10 files changed, 70 insertions, 16 deletions
diff --git a/Documentation/DocBook/media/v4l/compat.xml b/Documentation/DocBook/media/v4l/compat.xml
index 97b895151bb..4559a6f8a5f 100644
--- a/Documentation/DocBook/media/v4l/compat.xml
+++ b/Documentation/DocBook/media/v4l/compat.xml
@@ -2471,6 +2471,15 @@ that used it. It was originally scheduled for removal in 2.6.35.
</orderedlist>
</section>
+ <section>
+ <title>V4L2 in Linux 3.6</title>
+ <orderedlist>
+ <listitem>
+ <para>Added V4L2_CAP_VIDEO_M2M and V4L2_CAP_VIDEO_M2M_MPLANE capabilities.</para>
+ </listitem>
+ </orderedlist>
+ </section>
+
<section id="other">
<title>Relation of V4L2 to other Linux multimedia APIs</title>
diff --git a/Documentation/DocBook/media/v4l/vidioc-querycap.xml b/Documentation/DocBook/media/v4l/vidioc-querycap.xml
index 4643505cd4c..f33dd746b66 100644
--- a/Documentation/DocBook/media/v4l/vidioc-querycap.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-querycap.xml
@@ -192,6 +192,19 @@ 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/drivers/media/video/mem2mem_testdev.c b/drivers/media/video/mem2mem_testdev.c
index 7fdee8fcf3f..7efe9ad7acc 100644
--- a/drivers/media/video/mem2mem_testdev.c
+++ b/drivers/media/video/mem2mem_testdev.c
@@ -431,8 +431,7 @@ static int vidioc_querycap(struct file *file, void *priv,
strncpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver) - 1);
strncpy(cap->card, MEM2MEM_NAME, sizeof(cap->card) - 1);
strlcpy(cap->bus_info, MEM2MEM_NAME, sizeof(cap->bus_info));
- cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT
- | V4L2_CAP_STREAMING;
+ cap->capabilities = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
return 0;
}
diff --git a/drivers/media/video/mx2_emmaprp.c b/drivers/media/video/mx2_emmaprp.c
index 0bd5815de36..5f8a6f5b98f 100644
--- a/drivers/media/video/mx2_emmaprp.c
+++ b/drivers/media/video/mx2_emmaprp.c
@@ -396,9 +396,13 @@ static int vidioc_querycap(struct file *file, void *priv,
{
strncpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver) - 1);
strncpy(cap->card, MEM2MEM_NAME, sizeof(cap->card) - 1);
- cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT
- | V4L2_CAP_STREAMING;
-
+ /*
+ * This is only a mem-to-mem video device. The capture and output
+ * device capability flags are left only for backward compatibility
+ * and are scheduled for removal.
+ */
+ cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT |
+ V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
return 0;
}
diff --git a/drivers/media/video/s5p-fimc/fimc-m2m.c b/drivers/media/video/s5p-fimc/fimc-m2m.c
index 41eda2e2748..c587011d80e 100644
--- a/drivers/media/video/s5p-fimc/fimc-m2m.c
+++ b/drivers/media/video/s5p-fimc/fimc-m2m.c
@@ -259,7 +259,12 @@ static int fimc_m2m_querycap(struct file *file, void *fh,
strncpy(cap->driver, fimc->pdev->name, sizeof(cap->driver) - 1);
strncpy(cap->card, fimc->pdev->name, sizeof(cap->card) - 1);
cap->bus_info[0] = 0;
- cap->capabilities = V4L2_CAP_STREAMING |
+ /*
+ * This is only a mem-to-mem video device. The capture and output
+ * device capability flags are left only for backward compatibility
+ * and are scheduled for removal.
+ */
+ cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M_MPLANE |
V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_VIDEO_OUTPUT_MPLANE;
return 0;
diff --git a/drivers/media/video/s5p-g2d/g2d.c b/drivers/media/video/s5p-g2d/g2d.c
index 7c98ee7377e..7c220043520 100644
--- a/drivers/media/video/s5p-g2d/g2d.c
+++ b/drivers/media/video/s5p-g2d/g2d.c
@@ -290,8 +290,13 @@ static int vidioc_querycap(struct file *file, void *priv,
strncpy(cap->card, G2D_NAME, sizeof(cap->card) - 1);
cap->bus_info[0] = 0;
cap->version = KERNEL_VERSION(1, 0, 0);
- cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT
- | V4L2_CAP_STREAMING;
+ /*
+ * This is only a mem-to-mem video device. The capture and output
+ * device capability flags are left only for backward compatibility
+ * and are scheduled for removal.
+ */
+ cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT |
+ V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
return 0;
}
diff --git a/drivers/media/video/s5p-jpeg/jpeg-core.c b/drivers/media/video/s5p-jpeg/jpeg-core.c
index 95f23024b17..813b801238d 100644
--- a/drivers/media/video/s5p-jpeg/jpeg-core.c
+++ b/drivers/media/video/s5p-jpeg/jpeg-core.c
@@ -489,9 +489,13 @@ static int s5p_jpeg_querycap(struct file *file, void *priv,
sizeof(cap->card));
}
cap->bus_info[0] = 0;
- cap->capabilities = V4L2_CAP_STREAMING |
- V4L2_CAP_VIDEO_CAPTURE |
- V4L2_CAP_VIDEO_OUTPUT;
+ /*
+ * This is only a mem-to-mem video device. The capture and output
+ * device capability flags are left only for backward compatibility
+ * and are scheduled for removal.
+ */
+ cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M |
+ V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT;
return 0;
}
diff --git a/drivers/media/video/s5p-mfc/s5p_mfc_dec.c b/drivers/media/video/s5p-mfc/s5p_mfc_dec.c
index feea867f318..c5d567f87d7 100644
--- a/drivers/media/video/s5p-mfc/s5p_mfc_dec.c
+++ b/drivers/media/video/s5p-mfc/s5p_mfc_dec.c
@@ -220,8 +220,14 @@ static int vidioc_querycap(struct file *file, void *priv,
strncpy(cap->card, dev->plat_dev->name, sizeof(cap->card) - 1);
cap->bus_info[0] = 0;
cap->version = KERNEL_VERSION(1, 0, 0);
- cap->capabilities = V4L2_CAP_VIDEO_CAPTURE_MPLANE |
- V4L2_CAP_VIDEO_OUTPUT_MPLANE | V4L2_CAP_STREAMING;
+ /*
+ * This is only a mem-to-mem video device. The capture and output
+ * device capability flags are left only for backward compatibility
+ * and are scheduled for removal.
+ */
+ cap->capabilities = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_STREAMING |
+ V4L2_CAP_VIDEO_CAPTURE_MPLANE |
+ V4L2_CAP_VIDEO_OUTPUT_MPLANE;
return 0;
}
diff --git a/drivers/media/video/s5p-mfc/s5p_mfc_enc.c b/drivers/media/video/s5p-mfc/s5p_mfc_enc.c
index 158b78989b8..aa1c244cf66 100644
--- a/drivers/media/video/s5p-mfc/s5p_mfc_enc.c
+++ b/drivers/media/video/s5p-mfc/s5p_mfc_enc.c
@@ -779,9 +779,14 @@ static int vidioc_querycap(struct file *file, void *priv,
strncpy(cap->card, dev->plat_dev->name, sizeof(cap->card) - 1);
cap->bus_info[0] = 0;
cap->version = KERNEL_VERSION(1, 0, 0);
- cap->capabilities = V4L2_CAP_VIDEO_CAPTURE_MPLANE
- | V4L2_CAP_VIDEO_OUTPUT_MPLANE
- | V4L2_CAP_STREAMING;
+ /*
+ * This is only a mem-to-mem video device. The capture and output
+ * device capability flags are left only for backward compatibility
+ * and are scheduled for removal.
+ */
+ cap->capabilities = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_STREAMING |
+ V4L2_CAP_VIDEO_CAPTURE_MPLANE |
+ V4L2_CAP_VIDEO_OUTPUT_MPLANE;
return 0;
}
diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index 5d78910f926..4cf766e6f12 100644
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -274,6 +274,10 @@ struct v4l2_capability {
#define V4L2_CAP_VIDEO_CAPTURE_MPLANE 0x00001000
/* Is a video output device that supports multiplanar formats */
#define V4L2_CAP_VIDEO_OUTPUT_MPLANE 0x00002000
+/* Is a video mem-to-mem device that supports multiplanar formats */
+#define V4L2_CAP_VIDEO_M2M_MPLANE 0x00004000
+/* Is a video mem-to-mem device */
+#define V4L2_CAP_VIDEO_M2M 0x00008000
#define V4L2_CAP_TUNER 0x00010000 /* has a tuner */
#define V4L2_CAP_AUDIO 0x00020000 /* has audio support */