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authorFelipe Balbi <felipe.balbi@nokia.com>2010-01-05 16:10:13 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2010-03-02 14:54:02 -0800
commitf358f5b40af67caf28b627889d007294614170b2 (patch)
treec28a199d25fb40e3407d879f4a82d9053d94452b /drivers/usb/gadget/nokia.c
parent9c9a7dbf9a73191a24a13b9a0412355254a122c7 (diff)
USB: gadget: introduce g_nokia gadget driver
g_nokia is the gadget driver implementing WMCDC Wireless Handset Control Model for the N900 device. Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/gadget/nokia.c')
-rw-r--r--drivers/usb/gadget/nokia.c259
1 files changed, 259 insertions, 0 deletions
diff --git a/drivers/usb/gadget/nokia.c b/drivers/usb/gadget/nokia.c
new file mode 100644
index 00000000000..7d6b66a8572
--- /dev/null
+++ b/drivers/usb/gadget/nokia.c
@@ -0,0 +1,259 @@
+/*
+ * nokia.c -- Nokia Composite Gadget Driver
+ *
+ * Copyright (C) 2008-2010 Nokia Corporation
+ * Contact: Felipe Balbi <felipe.balbi@nokia.com>
+ *
+ * This gadget driver borrows from serial.c which is:
+ *
+ * Copyright (C) 2003 Al Borchers (alborchers@steinerpoint.com)
+ * Copyright (C) 2008 by David Brownell
+ * Copyright (C) 2008 by Nokia Corporation
+ *
+ * This software is distributed under the terms of the GNU General
+ * Public License ("GPL") as published by the Free Software Foundation,
+ * version 2 of that License.
+ */
+
+#include <linux/kernel.h>
+#include <linux/utsname.h>
+#include <linux/device.h>
+
+#include "u_serial.h"
+#include "u_ether.h"
+#include "u_phonet.h"
+#include "gadget_chips.h"
+
+/* Defines */
+
+#define NOKIA_VERSION_NUM 0x0211
+#define NOKIA_LONG_NAME "N900 (PC-Suite Mode)"
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * Kbuild is not very cooperative with respect to linking separately
+ * compiled library objects into one module. So for now we won't use
+ * separate compilation ... ensuring init/exit sections work to shrink
+ * the runtime footprint, and giving us at least some parts of what
+ * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
+ */
+#include "composite.c"
+#include "usbstring.c"
+#include "config.c"
+#include "epautoconf.c"
+
+#include "u_serial.c"
+#include "f_acm.c"
+#include "f_ecm.c"
+#include "f_obex.c"
+#include "f_serial.c"
+#include "f_phonet.c"
+#include "u_ether.c"
+
+/*-------------------------------------------------------------------------*/
+
+#define NOKIA_VENDOR_ID 0x0421 /* Nokia */
+#define NOKIA_PRODUCT_ID 0x01c8 /* Nokia Gadget */
+
+/* string IDs are assigned dynamically */
+
+#define STRING_MANUFACTURER_IDX 0
+#define STRING_PRODUCT_IDX 1
+#define STRING_DESCRIPTION_IDX 2
+
+static char manufacturer_nokia[] = "Nokia";
+static const char product_nokia[] = NOKIA_LONG_NAME;
+static const char description_nokia[] = "PC-Suite Configuration";
+
+static struct usb_string strings_dev[] = {
+ [STRING_MANUFACTURER_IDX].s = manufacturer_nokia,
+ [STRING_PRODUCT_IDX].s = NOKIA_LONG_NAME,
+ [STRING_DESCRIPTION_IDX].s = description_nokia,
+ { } /* end of list */
+};
+
+static struct usb_gadget_strings stringtab_dev = {
+ .language = 0x0409, /* en-us */
+ .strings = strings_dev,
+};
+
+static struct usb_gadget_strings *dev_strings[] = {
+ &stringtab_dev,
+ NULL,
+};
+
+static struct usb_device_descriptor device_desc = {
+ .bLength = USB_DT_DEVICE_SIZE,
+ .bDescriptorType = USB_DT_DEVICE,
+ .bcdUSB = __constant_cpu_to_le16(0x0200),
+ .bDeviceClass = USB_CLASS_COMM,
+ .idVendor = __constant_cpu_to_le16(NOKIA_VENDOR_ID),
+ .idProduct = __constant_cpu_to_le16(NOKIA_PRODUCT_ID),
+ /* .iManufacturer = DYNAMIC */
+ /* .iProduct = DYNAMIC */
+ .bNumConfigurations = 1,
+};
+
+/*-------------------------------------------------------------------------*/
+
+/* Module */
+MODULE_DESCRIPTION("Nokia composite gadget driver for N900");
+MODULE_AUTHOR("Felipe Balbi");
+MODULE_LICENSE("GPL");
+
+/*-------------------------------------------------------------------------*/
+
+static u8 hostaddr[ETH_ALEN];
+
+static int __init nokia_bind_config(struct usb_configuration *c)
+{
+ int status = 0;
+
+ status = phonet_bind_config(c);
+ if (status)
+ printk(KERN_DEBUG "could not bind phonet config\n");
+
+ status = obex_bind_config(c, 0);
+ if (status)
+ printk(KERN_DEBUG "could not bind obex config %d\n", 0);
+
+ status = obex_bind_config(c, 1);
+ if (status)
+ printk(KERN_DEBUG "could not bind obex config %d\n", 0);
+
+ status = acm_bind_config(c, 2);
+ if (status)
+ printk(KERN_DEBUG "could not bind acm config\n");
+
+ status = ecm_bind_config(c, hostaddr);
+ if (status)
+ printk(KERN_DEBUG "could not bind ecm config\n");
+
+ return status;
+}
+
+static struct usb_configuration nokia_config_500ma_driver = {
+ .label = "Bus Powered",
+ .bind = nokia_bind_config,
+ .bConfigurationValue = 1,
+ /* .iConfiguration = DYNAMIC */
+ .bmAttributes = USB_CONFIG_ATT_ONE,
+ .bMaxPower = 250, /* 500mA */
+};
+
+static struct usb_configuration nokia_config_100ma_driver = {
+ .label = "Self Powered",
+ .bind = nokia_bind_config,
+ .bConfigurationValue = 2,
+ /* .iConfiguration = DYNAMIC */
+ .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER,
+ .bMaxPower = 50, /* 100 mA */
+};
+
+static int __init nokia_bind(struct usb_composite_dev *cdev)
+{
+ int gcnum;
+ struct usb_gadget *gadget = cdev->gadget;
+ int status;
+
+ status = gphonet_setup(cdev->gadget);
+ if (status < 0)
+ goto err_phonet;
+
+ status = gserial_setup(cdev->gadget, 3);
+ if (status < 0)
+ goto err_serial;
+
+ status = gether_setup(cdev->gadget, hostaddr);
+ if (status < 0)
+ goto err_ether;
+
+ status = usb_string_id(cdev);
+ if (status < 0)
+ goto err_usb;
+ strings_dev[STRING_MANUFACTURER_IDX].id = status;
+
+ device_desc.iManufacturer = status;
+
+ status = usb_string_id(cdev);
+ if (status < 0)
+ goto err_usb;
+ strings_dev[STRING_PRODUCT_IDX].id = status;
+
+ device_desc.iProduct = status;
+
+ /* config description */
+ status = usb_string_id(cdev);
+ if (status < 0)
+ goto err_usb;
+ strings_dev[STRING_DESCRIPTION_IDX].id = status;
+
+ nokia_config_500ma_driver.iConfiguration = status;
+ nokia_config_100ma_driver.iConfiguration = status;
+
+ /* set up other descriptors */
+ gcnum = usb_gadget_controller_number(gadget);
+ if (gcnum >= 0)
+ device_desc.bcdDevice = cpu_to_le16(NOKIA_VERSION_NUM);
+ else {
+ /* this should only work with hw that supports altsettings
+ * and several endpoints, anything else, panic.
+ */
+ pr_err("nokia_bind: controller '%s' not recognized\n",
+ gadget->name);
+ goto err_usb;
+ }
+
+ /* finaly register the configuration */
+ status = usb_add_config(cdev, &nokia_config_500ma_driver);
+ if (status < 0)
+ goto err_usb;
+
+ status = usb_add_config(cdev, &nokia_config_100ma_driver);
+ if (status < 0)
+ goto err_usb;
+
+ dev_info(&gadget->dev, "%s\n", NOKIA_LONG_NAME);
+
+ return 0;
+
+err_usb:
+ gether_cleanup();
+err_ether:
+ gserial_cleanup();
+err_serial:
+ gphonet_cleanup();
+err_phonet:
+ return status;
+}
+
+static int __exit nokia_unbind(struct usb_composite_dev *cdev)
+{
+ gphonet_cleanup();
+ gserial_cleanup();
+ gether_cleanup();
+
+ return 0;
+}
+
+static struct usb_composite_driver nokia_driver = {
+ .name = "g_nokia",
+ .dev = &device_desc,
+ .strings = dev_strings,
+ .bind = nokia_bind,
+ .unbind = __exit_p(nokia_unbind),
+};
+
+static int __init nokia_init(void)
+{
+ return usb_composite_register(&nokia_driver);
+}
+module_init(nokia_init);
+
+static void __exit nokia_cleanup(void)
+{
+ usb_composite_unregister(&nokia_driver);
+}
+module_exit(nokia_cleanup);
+