[deliverable/linux.git] / drivers / usb / gadget / webcam.c

/*
 *	webcam.c -- USB webcam gadget driver
 *
 *	Copyright (C) 2009-2010
 *	    Laurent Pinchart (laurent.pinchart@ideasonboard.com)
 *
 *	This program is free software; you can redistribute it and/or modify
 *	it under the terms of the GNU General Public License as published by
 *	the Free Software Foundation; either version 2 of the License, or
 *	(at your option) any later version.
 */

#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/usb/video.h>

#include "f_uvc.h"

/*
 * 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 "uvc_queue.c"
#include "uvc_video.c"
#include "uvc_v4l2.c"
#include "f_uvc.c"

/* --------------------------------------------------------------------------
 * Device descriptor
 */

#define WEBCAM_VENDOR_ID		0x1d6b	/* Linux Foundation */
#define WEBCAM_PRODUCT_ID		0x0102	/* Webcam A/V gadget */
#define WEBCAM_DEVICE_BCD		0x0010	/* 0.10 */

static char webcam_vendor_label[] = "Linux Foundation";
static char webcam_product_label[] = "Webcam gadget";
static char webcam_config_label[] = "Video";

/* string IDs are assigned dynamically */

#define STRING_MANUFACTURER_IDX		0
#define STRING_PRODUCT_IDX		1
#define STRING_DESCRIPTION_IDX		2

static struct usb_string webcam_strings[] = {
	[STRING_MANUFACTURER_IDX].s = webcam_vendor_label,
	[STRING_PRODUCT_IDX].s = webcam_product_label,
	[STRING_DESCRIPTION_IDX].s = webcam_config_label,
	{  }
};

static struct usb_gadget_strings webcam_stringtab = {
	.language = 0x0409,	/* en-us */
	.strings = webcam_strings,
};

static struct usb_gadget_strings *webcam_device_strings[] = {
	&webcam_stringtab,
	NULL,
};

static struct usb_device_descriptor webcam_device_descriptor = {
	.bLength		= USB_DT_DEVICE_SIZE,
	.bDescriptorType	= USB_DT_DEVICE,
	.bcdUSB			= cpu_to_le16(0x0200),
	.bDeviceClass		= USB_CLASS_MISC,
	.bDeviceSubClass	= 0x02,
	.bDeviceProtocol	= 0x01,
	.bMaxPacketSize0	= 0, /* dynamic */
	.idVendor		= cpu_to_le16(WEBCAM_VENDOR_ID),
	.idProduct		= cpu_to_le16(WEBCAM_PRODUCT_ID),
	.bcdDevice		= cpu_to_le16(WEBCAM_DEVICE_BCD),
	.iManufacturer		= 0, /* dynamic */
	.iProduct		= 0, /* dynamic */
	.iSerialNumber		= 0, /* dynamic */
	.bNumConfigurations	= 0, /* dynamic */
};

DECLARE_UVC_HEADER_DESCRIPTOR(1);

static const struct UVC_HEADER_DESCRIPTOR(1) uvc_control_header = {
	.bLength		= UVC_DT_HEADER_SIZE(1),
	.bDescriptorType	= USB_DT_CS_INTERFACE,
	.bDescriptorSubType	= UVC_VC_HEADER,
	.bcdUVC			= cpu_to_le16(0x0100),
	.wTotalLength		= 0, /* dynamic */
	.dwClockFrequency	= cpu_to_le32(48000000),
	.bInCollection		= 0, /* dynamic */
	.baInterfaceNr[0]	= 0, /* dynamic */
};

static const struct uvc_camera_terminal_descriptor uvc_camera_terminal = {
	.bLength		= UVC_DT_CAMERA_TERMINAL_SIZE(3),
	.bDescriptorType	= USB_DT_CS_INTERFACE,
	.bDescriptorSubType	= UVC_VC_INPUT_TERMINAL,
	.bTerminalID		= 1,
	.wTerminalType		= cpu_to_le16(0x0201),
	.bAssocTerminal		= 0,
	.iTerminal		= 0,
	.wObjectiveFocalLengthMin	= cpu_to_le16(0),
	.wObjectiveFocalLengthMax	= cpu_to_le16(0),
	.wOcularFocalLength		= cpu_to_le16(0),
	.bControlSize		= 3,
	.bmControls[0]		= 2,
	.bmControls[1]		= 0,
	.bmControls[2]		= 0,
};

static const struct uvc_processing_unit_descriptor uvc_processing = {
	.bLength		= UVC_DT_PROCESSING_UNIT_SIZE(2),
	.bDescriptorType	= USB_DT_CS_INTERFACE,
	.bDescriptorSubType	= UVC_VC_PROCESSING_UNIT,
	.bUnitID		= 2,
	.bSourceID		= 1,
	.wMaxMultiplier		= cpu_to_le16(16*1024),
	.bControlSize		= 2,
	.bmControls[0]		= 1,
	.bmControls[1]		= 0,
	.iProcessing		= 0,
};

static const struct uvc_output_terminal_descriptor uvc_output_terminal = {
	.bLength		= UVC_DT_OUTPUT_TERMINAL_SIZE,
	.bDescriptorType	= USB_DT_CS_INTERFACE,
	.bDescriptorSubType	= UVC_VC_OUTPUT_TERMINAL,
	.bTerminalID		= 3,
	.wTerminalType		= cpu_to_le16(0x0101),
	.bAssocTerminal		= 0,
	.bSourceID		= 2,
	.iTerminal		= 0,
};

DECLARE_UVC_INPUT_HEADER_DESCRIPTOR(1, 2);

static const struct UVC_INPUT_HEADER_DESCRIPTOR(1, 2) uvc_input_header = {
	.bLength		= UVC_DT_INPUT_HEADER_SIZE(1, 2),
	.bDescriptorType	= USB_DT_CS_INTERFACE,
	.bDescriptorSubType	= UVC_VS_INPUT_HEADER,
	.bNumFormats		= 2,
	.wTotalLength		= 0, /* dynamic */
	.bEndpointAddress	= 0, /* dynamic */
	.bmInfo			= 0,
	.bTerminalLink		= 3,
	.bStillCaptureMethod	= 0,
	.bTriggerSupport	= 0,
	.bTriggerUsage		= 0,
	.bControlSize		= 1,
	.bmaControls[0][0]	= 0,
	.bmaControls[1][0]	= 4,
};

static const struct uvc_format_uncompressed uvc_format_yuv = {
	.bLength		= UVC_DT_FORMAT_UNCOMPRESSED_SIZE,
	.bDescriptorType	= USB_DT_CS_INTERFACE,
	.bDescriptorSubType	= UVC_VS_FORMAT_UNCOMPRESSED,
	.bFormatIndex		= 1,
	.bNumFrameDescriptors	= 2,
	.guidFormat		=
		{ 'Y',  'U',  'Y',  '2', 0x00, 0x00, 0x10, 0x00,
		 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71},
	.bBitsPerPixel		= 16,
	.bDefaultFrameIndex	= 1,
	.bAspectRatioX		= 0,
	.bAspectRatioY		= 0,
	.bmInterfaceFlags	= 0,
	.bCopyProtect		= 0,
};

DECLARE_UVC_FRAME_UNCOMPRESSED(1);
DECLARE_UVC_FRAME_UNCOMPRESSED(3);

static const struct UVC_FRAME_UNCOMPRESSED(3) uvc_frame_yuv_360p = {
	.bLength		= UVC_DT_FRAME_UNCOMPRESSED_SIZE(3),
	.bDescriptorType	= USB_DT_CS_INTERFACE,
	.bDescriptorSubType	= UVC_VS_FRAME_UNCOMPRESSED,
	.bFrameIndex		= 1,
	.bmCapabilities		= 0,
	.wWidth			= cpu_to_le16(640),
	.wHeight		= cpu_to_le16(360),
	.dwMinBitRate		= cpu_to_le32(18432000),
	.dwMaxBitRate		= cpu_to_le32(55296000),
	.dwMaxVideoFrameBufferSize	= cpu_to_le32(460800),
	.dwDefaultFrameInterval	= cpu_to_le32(666666),
	.bFrameIntervalType	= 3,
	.dwFrameInterval[0]	= cpu_to_le32(666666),
	.dwFrameInterval[1]	= cpu_to_le32(1000000),
	.dwFrameInterval[2]	= cpu_to_le32(5000000),
};

static const struct UVC_FRAME_UNCOMPRESSED(1) uvc_frame_yuv_720p = {
	.bLength		= UVC_DT_FRAME_UNCOMPRESSED_SIZE(1),
	.bDescriptorType	= USB_DT_CS_INTERFACE,
	.bDescriptorSubType	= UVC_VS_FRAME_UNCOMPRESSED,
	.bFrameIndex		= 2,
	.bmCapabilities		= 0,
	.wWidth			= cpu_to_le16(1280),
	.wHeight		= cpu_to_le16(720),
	.dwMinBitRate		= cpu_to_le32(29491200),
	.dwMaxBitRate		= cpu_to_le32(29491200),
	.dwMaxVideoFrameBufferSize	= cpu_to_le32(1843200),
	.dwDefaultFrameInterval	= cpu_to_le32(5000000),
	.bFrameIntervalType	= 1,
	.dwFrameInterval[0]	= cpu_to_le32(5000000),
};

static const struct uvc_format_mjpeg uvc_format_mjpg = {
	.bLength		= UVC_DT_FORMAT_MJPEG_SIZE,
	.bDescriptorType	= USB_DT_CS_INTERFACE,
	.bDescriptorSubType	= UVC_VS_FORMAT_MJPEG,
	.bFormatIndex		= 2,
	.bNumFrameDescriptors	= 2,
	.bmFlags		= 0,
	.bDefaultFrameIndex	= 1,
	.bAspectRatioX		= 0,
	.bAspectRatioY		= 0,
	.bmInterfaceFlags	= 0,
	.bCopyProtect		= 0,
};

DECLARE_UVC_FRAME_MJPEG(1);
DECLARE_UVC_FRAME_MJPEG(3);

static const struct UVC_FRAME_MJPEG(3) uvc_frame_mjpg_360p = {
	.bLength		= UVC_DT_FRAME_MJPEG_SIZE(3),
	.bDescriptorType	= USB_DT_CS_INTERFACE,
	.bDescriptorSubType	= UVC_VS_FRAME_MJPEG,
	.bFrameIndex		= 1,
	.bmCapabilities		= 0,
	.wWidth			= cpu_to_le16(640),
	.wHeight		= cpu_to_le16(360),
	.dwMinBitRate		= cpu_to_le32(18432000),
	.dwMaxBitRate		= cpu_to_le32(55296000),
	.dwMaxVideoFrameBufferSize	= cpu_to_le32(460800),
	.dwDefaultFrameInterval	= cpu_to_le32(666666),
	.bFrameIntervalType	= 3,
	.dwFrameInterval[0]	= cpu_to_le32(666666),
	.dwFrameInterval[1]	= cpu_to_le32(1000000),
	.dwFrameInterval[2]	= cpu_to_le32(5000000),
};

static const struct UVC_FRAME_MJPEG(1) uvc_frame_mjpg_720p = {
	.bLength		= UVC_DT_FRAME_MJPEG_SIZE(1),
	.bDescriptorType	= USB_DT_CS_INTERFACE,
	.bDescriptorSubType	= UVC_VS_FRAME_MJPEG,
	.bFrameIndex		= 2,
	.bmCapabilities		= 0,
	.wWidth			= cpu_to_le16(1280),
	.wHeight		= cpu_to_le16(720),
	.dwMinBitRate		= cpu_to_le32(29491200),
	.dwMaxBitRate		= cpu_to_le32(29491200),
	.dwMaxVideoFrameBufferSize	= cpu_to_le32(1843200),
	.dwDefaultFrameInterval	= cpu_to_le32(5000000),
	.bFrameIntervalType	= 1,
	.dwFrameInterval[0]	= cpu_to_le32(5000000),
};

static const struct uvc_color_matching_descriptor uvc_color_matching = {
	.bLength		= UVC_DT_COLOR_MATCHING_SIZE,
	.bDescriptorType	= USB_DT_CS_INTERFACE,
	.bDescriptorSubType	= UVC_VS_COLORFORMAT,
	.bColorPrimaries	= 1,
	.bTransferCharacteristics	= 1,
	.bMatrixCoefficients	= 4,
};

static const struct uvc_descriptor_header * const uvc_fs_control_cls[] = {
	(const struct uvc_descriptor_header *) &uvc_control_header,
	(const struct uvc_descriptor_header *) &uvc_camera_terminal,
	(const struct uvc_descriptor_header *) &uvc_processing,
	(const struct uvc_descriptor_header *) &uvc_output_terminal,
	NULL,
};

static const struct uvc_descriptor_header * const uvc_ss_control_cls[] = {
	(const struct uvc_descriptor_header *) &uvc_control_header,
	(const struct uvc_descriptor_header *) &uvc_camera_terminal,
	(const struct uvc_descriptor_header *) &uvc_processing,
	(const struct uvc_descriptor_header *) &uvc_output_terminal,
	NULL,
};

static const struct uvc_descriptor_header * const uvc_fs_streaming_cls[] = {
	(const struct uvc_descriptor_header *) &uvc_input_header,
	(const struct uvc_descriptor_header *) &uvc_format_yuv,
	(const struct uvc_descriptor_header *) &uvc_frame_yuv_360p,
	(const struct uvc_descriptor_header *) &uvc_frame_yuv_720p,
	(const struct uvc_descriptor_header *) &uvc_format_mjpg,
	(const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p,
	(const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p,
	(const struct uvc_descriptor_header *) &uvc_color_matching,
	NULL,
};

static const struct uvc_descriptor_header * const uvc_hs_streaming_cls[] = {
	(const struct uvc_descriptor_header *) &uvc_input_header,
	(const struct uvc_descriptor_header *) &uvc_format_yuv,
	(const struct uvc_descriptor_header *) &uvc_frame_yuv_360p,
	(const struct uvc_descriptor_header *) &uvc_frame_yuv_720p,
	(const struct uvc_descriptor_header *) &uvc_format_mjpg,
	(const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p,
	(const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p,
	(const struct uvc_descriptor_header *) &uvc_color_matching,
	NULL,
};

static const struct uvc_descriptor_header * const uvc_ss_streaming_cls[] = {
	(const struct uvc_descriptor_header *) &uvc_input_header,
	(const struct uvc_descriptor_header *) &uvc_format_yuv,
	(const struct uvc_descriptor_header *) &uvc_frame_yuv_360p,
	(const struct uvc_descriptor_header *) &uvc_frame_yuv_720p,
	(const struct uvc_descriptor_header *) &uvc_format_mjpg,
	(const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p,
	(const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p,
	(const struct uvc_descriptor_header *) &uvc_color_matching,
	NULL,
};

/* --------------------------------------------------------------------------
 * USB configuration
 */

static int __init
webcam_config_bind(struct usb_configuration *c)
{
	return uvc_bind_config(c, uvc_fs_control_cls, uvc_ss_control_cls,
		uvc_fs_streaming_cls, uvc_hs_streaming_cls,
		uvc_ss_streaming_cls);
}

static struct usb_configuration webcam_config_driver = {
	.label			= webcam_config_label,
	.bConfigurationValue	= 1,
	.iConfiguration		= 0, /* dynamic */
	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
	.bMaxPower		= CONFIG_USB_GADGET_VBUS_DRAW / 2,
};

static int /* __init_or_exit */
webcam_unbind(struct usb_composite_dev *cdev)
{
	return 0;
}

static int __init
webcam_bind(struct usb_composite_dev *cdev)
{
	int ret;

	/* Allocate string descriptor numbers ... note that string contents
	 * can be overridden by the composite_dev glue.
	 */
	if ((ret = usb_string_id(cdev)) < 0)
		goto error;
	webcam_strings[STRING_MANUFACTURER_IDX].id = ret;
	webcam_device_descriptor.iManufacturer = ret;

	if ((ret = usb_string_id(cdev)) < 0)
		goto error;
	webcam_strings[STRING_PRODUCT_IDX].id = ret;
	webcam_device_descriptor.iProduct = ret;

	if ((ret = usb_string_id(cdev)) < 0)
		goto error;
	webcam_strings[STRING_DESCRIPTION_IDX].id = ret;
	webcam_config_driver.iConfiguration = ret;

	/* Register our configuration. */
	if ((ret = usb_add_config(cdev, &webcam_config_driver,
					webcam_config_bind)) < 0)
		goto error;

	INFO(cdev, "Webcam Video Gadget\n");
	return 0;

error:
	webcam_unbind(cdev);
	return ret;
}

/* --------------------------------------------------------------------------
 * Driver
 */

static struct usb_composite_driver webcam_driver = {
	.name		= "g_webcam",
	.dev		= &webcam_device_descriptor,
	.strings	= webcam_device_strings,
	.max_speed	= USB_SPEED_SUPER,
	.unbind		= webcam_unbind,
};

static int __init
webcam_init(void)
{
	return usb_composite_probe(&webcam_driver, webcam_bind);
}

static void __exit
webcam_cleanup(void)
{
	usb_composite_unregister(&webcam_driver);
}

module_init(webcam_init);
module_exit(webcam_cleanup);

MODULE_AUTHOR("Laurent Pinchart");
MODULE_DESCRIPTION("Webcam Video Gadget");
MODULE_LICENSE("GPL");
MODULE_VERSION("0.1.0");
Commit	Line	Data
a9914127 LP	1	/*
	2	* webcam.c -- USB webcam gadget driver
	3	*
	4	* Copyright (C) 2009-2010
	5	* Laurent Pinchart (laurent.pinchart@ideasonboard.com)
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
a9914127	11	*/
28c9fc68	12
a9914127 LP	13	#include <linux/kernel.h>
	14	#include <linux/device.h>
	15	#include <linux/usb/video.h>
	16
	17	#include "f_uvc.h"
	18
	19	/*
	20	* Kbuild is not very cooperative with respect to linking separately
	21	* compiled library objects into one module. So for now we won't use
	22	* separate compilation ... ensuring init/exit sections work to shrink
	23	* the runtime footprint, and giving us at least some parts of what
	24	* a "gcc --combine ... part1.c part2.c part3.c ... " build would.
	25	*/
	26	#include "composite.c"
	27	#include "usbstring.c"
	28	#include "config.c"
	29	#include "epautoconf.c"
	30
a9914127	31	#include "uvc_queue.c"
a9914127	32	#include "uvc_video.c"
5d9955f8 LP	33	#include "uvc_v4l2.c"
5d9955f8 LP	34	#include "f_uvc.c"
a9914127 LP	35
	36	/* --------------------------------------------------------------------------
	37	* Device descriptor
	38	*/
	39
	40	#define WEBCAM_VENDOR_ID 0x1d6b /* Linux Foundation */
	41	#define WEBCAM_PRODUCT_ID 0x0102 /* Webcam A/V gadget */
	42	#define WEBCAM_DEVICE_BCD 0x0010 /* 0.10 */
	43
	44	static char webcam_vendor_label[] = "Linux Foundation";
	45	static char webcam_product_label[] = "Webcam gadget";
	46	static char webcam_config_label[] = "Video";
	47
	48	/* string IDs are assigned dynamically */
	49
	50	#define STRING_MANUFACTURER_IDX 0
	51	#define STRING_PRODUCT_IDX 1
	52	#define STRING_DESCRIPTION_IDX 2
	53
	54	static struct usb_string webcam_strings[] = {
	55	[STRING_MANUFACTURER_IDX].s = webcam_vendor_label,
	56	[STRING_PRODUCT_IDX].s = webcam_product_label,
	57	[STRING_DESCRIPTION_IDX].s = webcam_config_label,
	58	{ }
	59	};
	60
	61	static struct usb_gadget_strings webcam_stringtab = {
	62	.language = 0x0409, /* en-us */
	63	.strings = webcam_strings,
	64	};
	65
	66	static struct usb_gadget_strings *webcam_device_strings[] = {
	67	&webcam_stringtab,
	68	NULL,
	69	};
	70
	71	static struct usb_device_descriptor webcam_device_descriptor = {
	72	.bLength = USB_DT_DEVICE_SIZE,
	73	.bDescriptorType = USB_DT_DEVICE,
	74	.bcdUSB = cpu_to_le16(0x0200),
	75	.bDeviceClass = USB_CLASS_MISC,
	76	.bDeviceSubClass = 0x02,
	77	.bDeviceProtocol = 0x01,
	78	.bMaxPacketSize0 = 0, /* dynamic */
	79	.idVendor = cpu_to_le16(WEBCAM_VENDOR_ID),
	80	.idProduct = cpu_to_le16(WEBCAM_PRODUCT_ID),
	81	.bcdDevice = cpu_to_le16(WEBCAM_DEVICE_BCD),
	82	.iManufacturer = 0, /* dynamic */
	83	.iProduct = 0, /* dynamic */
	84	.iSerialNumber = 0, /* dynamic */
	85	.bNumConfigurations = 0, /* dynamic */
	86	};
	87
	88	DECLARE_UVC_HEADER_DESCRIPTOR(1);
	89
	90	static const struct UVC_HEADER_DESCRIPTOR(1) uvc_control_header = {
	91	.bLength = UVC_DT_HEADER_SIZE(1),
	92	.bDescriptorType = USB_DT_CS_INTERFACE,
bbafc0cb	93	.bDescriptorSubType = UVC_VC_HEADER,
a9914127 LP	94	.bcdUVC = cpu_to_le16(0x0100),
	95	.wTotalLength = 0, /* dynamic */
	96	.dwClockFrequency = cpu_to_le32(48000000),
	97	.bInCollection = 0, /* dynamic */
	98	.baInterfaceNr[0] = 0, /* dynamic */
	99	};
	100
	101	static const struct uvc_camera_terminal_descriptor uvc_camera_terminal = {
	102	.bLength = UVC_DT_CAMERA_TERMINAL_SIZE(3),
	103	.bDescriptorType = USB_DT_CS_INTERFACE,
bbafc0cb	104	.bDescriptorSubType = UVC_VC_INPUT_TERMINAL,
a9914127 LP	105	.bTerminalID = 1,
	106	.wTerminalType = cpu_to_le16(0x0201),
	107	.bAssocTerminal = 0,
	108	.iTerminal = 0,
	109	.wObjectiveFocalLengthMin = cpu_to_le16(0),
	110	.wObjectiveFocalLengthMax = cpu_to_le16(0),
	111	.wOcularFocalLength = cpu_to_le16(0),
	112	.bControlSize = 3,
	113	.bmControls[0] = 2,
	114	.bmControls[1] = 0,
	115	.bmControls[2] = 0,
	116	};
	117
	118	static const struct uvc_processing_unit_descriptor uvc_processing = {
	119	.bLength = UVC_DT_PROCESSING_UNIT_SIZE(2),
	120	.bDescriptorType = USB_DT_CS_INTERFACE,
bbafc0cb	121	.bDescriptorSubType = UVC_VC_PROCESSING_UNIT,
a9914127 LP	122	.bUnitID = 2,
	123	.bSourceID = 1,
	124	.wMaxMultiplier = cpu_to_le16(16*1024),
	125	.bControlSize = 2,
	126	.bmControls[0] = 1,
	127	.bmControls[1] = 0,
	128	.iProcessing = 0,
	129	};
	130
	131	static const struct uvc_output_terminal_descriptor uvc_output_terminal = {
	132	.bLength = UVC_DT_OUTPUT_TERMINAL_SIZE,
	133	.bDescriptorType = USB_DT_CS_INTERFACE,
bbafc0cb	134	.bDescriptorSubType = UVC_VC_OUTPUT_TERMINAL,
a9914127 LP	135	.bTerminalID = 3,
	136	.wTerminalType = cpu_to_le16(0x0101),
	137	.bAssocTerminal = 0,
	138	.bSourceID = 2,
	139	.iTerminal = 0,
	140	};
	141
	142	DECLARE_UVC_INPUT_HEADER_DESCRIPTOR(1, 2);
	143
	144	static const struct UVC_INPUT_HEADER_DESCRIPTOR(1, 2) uvc_input_header = {
	145	.bLength = UVC_DT_INPUT_HEADER_SIZE(1, 2),
	146	.bDescriptorType = USB_DT_CS_INTERFACE,
bbafc0cb	147	.bDescriptorSubType = UVC_VS_INPUT_HEADER,
a9914127 LP	148	.bNumFormats = 2,
	149	.wTotalLength = 0, /* dynamic */
	150	.bEndpointAddress = 0, /* dynamic */
	151	.bmInfo = 0,
	152	.bTerminalLink = 3,
	153	.bStillCaptureMethod = 0,
	154	.bTriggerSupport = 0,
	155	.bTriggerUsage = 0,
	156	.bControlSize = 1,
	157	.bmaControls[0][0] = 0,
	158	.bmaControls[1][0] = 4,
	159	};
	160
	161	static const struct uvc_format_uncompressed uvc_format_yuv = {
	162	.bLength = UVC_DT_FORMAT_UNCOMPRESSED_SIZE,
	163	.bDescriptorType = USB_DT_CS_INTERFACE,
bbafc0cb	164	.bDescriptorSubType = UVC_VS_FORMAT_UNCOMPRESSED,
a9914127 LP	165	.bFormatIndex = 1,
	166	.bNumFrameDescriptors = 2,
	167	.guidFormat =
	168	{ 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00,
	169	0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71},
	170	.bBitsPerPixel = 16,
	171	.bDefaultFrameIndex = 1,
	172	.bAspectRatioX = 0,
	173	.bAspectRatioY = 0,
	174	.bmInterfaceFlags = 0,
	175	.bCopyProtect = 0,
	176	};
	177
	178	DECLARE_UVC_FRAME_UNCOMPRESSED(1);
	179	DECLARE_UVC_FRAME_UNCOMPRESSED(3);
	180
	181	static const struct UVC_FRAME_UNCOMPRESSED(3) uvc_frame_yuv_360p = {
	182	.bLength = UVC_DT_FRAME_UNCOMPRESSED_SIZE(3),
	183	.bDescriptorType = USB_DT_CS_INTERFACE,
bbafc0cb	184	.bDescriptorSubType = UVC_VS_FRAME_UNCOMPRESSED,
a9914127 LP	185	.bFrameIndex = 1,
	186	.bmCapabilities = 0,
	187	.wWidth = cpu_to_le16(640),
	188	.wHeight = cpu_to_le16(360),
	189	.dwMinBitRate = cpu_to_le32(18432000),
	190	.dwMaxBitRate = cpu_to_le32(55296000),
	191	.dwMaxVideoFrameBufferSize = cpu_to_le32(460800),
	192	.dwDefaultFrameInterval = cpu_to_le32(666666),
	193	.bFrameIntervalType = 3,
	194	.dwFrameInterval[0] = cpu_to_le32(666666),
	195	.dwFrameInterval[1] = cpu_to_le32(1000000),
	196	.dwFrameInterval[2] = cpu_to_le32(5000000),
	197	};
	198
	199	static const struct UVC_FRAME_UNCOMPRESSED(1) uvc_frame_yuv_720p = {
	200	.bLength = UVC_DT_FRAME_UNCOMPRESSED_SIZE(1),
	201	.bDescriptorType = USB_DT_CS_INTERFACE,
bbafc0cb	202	.bDescriptorSubType = UVC_VS_FRAME_UNCOMPRESSED,
a9914127 LP	203	.bFrameIndex = 2,
	204	.bmCapabilities = 0,
	205	.wWidth = cpu_to_le16(1280),
	206	.wHeight = cpu_to_le16(720),
	207	.dwMinBitRate = cpu_to_le32(29491200),
	208	.dwMaxBitRate = cpu_to_le32(29491200),
	209	.dwMaxVideoFrameBufferSize = cpu_to_le32(1843200),
	210	.dwDefaultFrameInterval = cpu_to_le32(5000000),
	211	.bFrameIntervalType = 1,
	212	.dwFrameInterval[0] = cpu_to_le32(5000000),
	213	};
	214
	215	static const struct uvc_format_mjpeg uvc_format_mjpg = {
	216	.bLength = UVC_DT_FORMAT_MJPEG_SIZE,
	217	.bDescriptorType = USB_DT_CS_INTERFACE,
bbafc0cb	218	.bDescriptorSubType = UVC_VS_FORMAT_MJPEG,
a9914127 LP	219	.bFormatIndex = 2,
	220	.bNumFrameDescriptors = 2,
	221	.bmFlags = 0,
	222	.bDefaultFrameIndex = 1,
	223	.bAspectRatioX = 0,
	224	.bAspectRatioY = 0,
	225	.bmInterfaceFlags = 0,
	226	.bCopyProtect = 0,
	227	};
	228
	229	DECLARE_UVC_FRAME_MJPEG(1);
	230	DECLARE_UVC_FRAME_MJPEG(3);
	231
	232	static const struct UVC_FRAME_MJPEG(3) uvc_frame_mjpg_360p = {
	233	.bLength = UVC_DT_FRAME_MJPEG_SIZE(3),
	234	.bDescriptorType = USB_DT_CS_INTERFACE,
bbafc0cb	235	.bDescriptorSubType = UVC_VS_FRAME_MJPEG,
a9914127 LP	236	.bFrameIndex = 1,
	237	.bmCapabilities = 0,
	238	.wWidth = cpu_to_le16(640),
	239	.wHeight = cpu_to_le16(360),
	240	.dwMinBitRate = cpu_to_le32(18432000),
	241	.dwMaxBitRate = cpu_to_le32(55296000),
	242	.dwMaxVideoFrameBufferSize = cpu_to_le32(460800),
	243	.dwDefaultFrameInterval = cpu_to_le32(666666),
	244	.bFrameIntervalType = 3,
	245	.dwFrameInterval[0] = cpu_to_le32(666666),
	246	.dwFrameInterval[1] = cpu_to_le32(1000000),
	247	.dwFrameInterval[2] = cpu_to_le32(5000000),
	248	};
	249
	250	static const struct UVC_FRAME_MJPEG(1) uvc_frame_mjpg_720p = {
	251	.bLength = UVC_DT_FRAME_MJPEG_SIZE(1),
	252	.bDescriptorType = USB_DT_CS_INTERFACE,
bbafc0cb	253	.bDescriptorSubType = UVC_VS_FRAME_MJPEG,
a9914127 LP	254	.bFrameIndex = 2,
	255	.bmCapabilities = 0,
	256	.wWidth = cpu_to_le16(1280),
	257	.wHeight = cpu_to_le16(720),
	258	.dwMinBitRate = cpu_to_le32(29491200),
	259	.dwMaxBitRate = cpu_to_le32(29491200),
	260	.dwMaxVideoFrameBufferSize = cpu_to_le32(1843200),
	261	.dwDefaultFrameInterval = cpu_to_le32(5000000),
	262	.bFrameIntervalType = 1,
	263	.dwFrameInterval[0] = cpu_to_le32(5000000),
	264	};
	265
	266	static const struct uvc_color_matching_descriptor uvc_color_matching = {
	267	.bLength = UVC_DT_COLOR_MATCHING_SIZE,
	268	.bDescriptorType = USB_DT_CS_INTERFACE,
bbafc0cb	269	.bDescriptorSubType = UVC_VS_COLORFORMAT,
a9914127 LP	270	.bColorPrimaries = 1,
	271	.bTransferCharacteristics = 1,
	272	.bMatrixCoefficients = 4,
	273	};
	274
fbcaba0e BS	275	static const struct uvc_descriptor_header * const uvc_fs_control_cls[] = {
	276	(const struct uvc_descriptor_header *) &uvc_control_header,
	277	(const struct uvc_descriptor_header *) &uvc_camera_terminal,
	278	(const struct uvc_descriptor_header *) &uvc_processing,
	279	(const struct uvc_descriptor_header *) &uvc_output_terminal,
	280	NULL,
	281	};
	282
	283	static const struct uvc_descriptor_header * const uvc_ss_control_cls[] = {
a9914127 LP	284	(const struct uvc_descriptor_header *) &uvc_control_header,
	285	(const struct uvc_descriptor_header *) &uvc_camera_terminal,
	286	(const struct uvc_descriptor_header *) &uvc_processing,
	287	(const struct uvc_descriptor_header *) &uvc_output_terminal,
	288	NULL,
	289	};
	290
	291	static const struct uvc_descriptor_header * const uvc_fs_streaming_cls[] = {
	292	(const struct uvc_descriptor_header *) &uvc_input_header,
	293	(const struct uvc_descriptor_header *) &uvc_format_yuv,
	294	(const struct uvc_descriptor_header *) &uvc_frame_yuv_360p,
	295	(const struct uvc_descriptor_header *) &uvc_frame_yuv_720p,
	296	(const struct uvc_descriptor_header *) &uvc_format_mjpg,
	297	(const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p,
	298	(const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p,
	299	(const struct uvc_descriptor_header *) &uvc_color_matching,
	300	NULL,
	301	};
	302
	303	static const struct uvc_descriptor_header * const uvc_hs_streaming_cls[] = {
	304	(const struct uvc_descriptor_header *) &uvc_input_header,
	305	(const struct uvc_descriptor_header *) &uvc_format_yuv,
	306	(const struct uvc_descriptor_header *) &uvc_frame_yuv_360p,
	307	(const struct uvc_descriptor_header *) &uvc_frame_yuv_720p,
	308	(const struct uvc_descriptor_header *) &uvc_format_mjpg,
	309	(const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p,
	310	(const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p,
	311	(const struct uvc_descriptor_header *) &uvc_color_matching,
	312	NULL,
	313	};
	314
fbcaba0e BS	315	static const struct uvc_descriptor_header * const uvc_ss_streaming_cls[] = {
	316	(const struct uvc_descriptor_header *) &uvc_input_header,
	317	(const struct uvc_descriptor_header *) &uvc_format_yuv,
	318	(const struct uvc_descriptor_header *) &uvc_frame_yuv_360p,
	319	(const struct uvc_descriptor_header *) &uvc_frame_yuv_720p,
	320	(const struct uvc_descriptor_header *) &uvc_format_mjpg,
	321	(const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p,
	322	(const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p,
	323	(const struct uvc_descriptor_header *) &uvc_color_matching,
	324	NULL,
	325	};
	326
a9914127 LP	327	/* --------------------------------------------------------------------------
	328	* USB configuration
	329	*/
	330
e12995ec	331	static int __init
a9914127 LP	332	webcam_config_bind(struct usb_configuration *c)
a9914127 LP	333	{
fbcaba0e BS	334	return uvc_bind_config(c, uvc_fs_control_cls, uvc_ss_control_cls,
	335	uvc_fs_streaming_cls, uvc_hs_streaming_cls,
	336	uvc_ss_streaming_cls);
a9914127 LP	337	}
	338
	339	static struct usb_configuration webcam_config_driver = {
	340	.label = webcam_config_label,
a9914127 LP	341	.bConfigurationValue = 1,
	342	.iConfiguration = 0, /* dynamic */
	343	.bmAttributes = USB_CONFIG_ATT_SELFPOWER,
	344	.bMaxPower = CONFIG_USB_GADGET_VBUS_DRAW / 2,
	345	};
	346
	347	static int /* __init_or_exit */
	348	webcam_unbind(struct usb_composite_dev *cdev)
	349	{
	350	return 0;
	351	}
	352
e12995ec	353	static int __init
a9914127 LP	354	webcam_bind(struct usb_composite_dev *cdev)
	355	{
	356	int ret;
	357
	358	/* Allocate string descriptor numbers ... note that string contents
	359	* can be overridden by the composite_dev glue.
	360	*/
	361	if ((ret = usb_string_id(cdev)) < 0)
	362	goto error;
	363	webcam_strings[STRING_MANUFACTURER_IDX].id = ret;
	364	webcam_device_descriptor.iManufacturer = ret;
	365
	366	if ((ret = usb_string_id(cdev)) < 0)
	367	goto error;
	368	webcam_strings[STRING_PRODUCT_IDX].id = ret;
	369	webcam_device_descriptor.iProduct = ret;
	370
	371	if ((ret = usb_string_id(cdev)) < 0)
	372	goto error;
	373	webcam_strings[STRING_DESCRIPTION_IDX].id = ret;
	374	webcam_config_driver.iConfiguration = ret;
	375
	376	/* Register our configuration. */
c9bfff9c UKK	377	if ((ret = usb_add_config(cdev, &webcam_config_driver,
c9bfff9c UKK	378	webcam_config_bind)) < 0)
a9914127 LP	379	goto error;
	380
	381	INFO(cdev, "Webcam Video Gadget\n");
	382	return 0;
	383
	384	error:
	385	webcam_unbind(cdev);
	386	return ret;
	387	}
	388
	389	/* --------------------------------------------------------------------------
	390	* Driver
	391	*/
	392
	393	static struct usb_composite_driver webcam_driver = {
	394	.name = "g_webcam",
	395	.dev = &webcam_device_descriptor,
	396	.strings = webcam_device_strings,
fbcaba0e	397	.max_speed = USB_SPEED_SUPER,
a9914127 LP	398	.unbind = webcam_unbind,
	399	};
	400
	401	static int __init
	402	webcam_init(void)
	403	{
07a18bd7	404	return usb_composite_probe(&webcam_driver, webcam_bind);
a9914127 LP	405	}
	406
	407	static void __exit
	408	webcam_cleanup(void)
	409	{
	410	usb_composite_unregister(&webcam_driver);
	411	}
	412
	413	module_init(webcam_init);
	414	module_exit(webcam_cleanup);
	415
	416	MODULE_AUTHOR("Laurent Pinchart");
	417	MODULE_DESCRIPTION("Webcam Video Gadget");
	418	MODULE_LICENSE("GPL");
	419	MODULE_VERSION("0.1.0");
	420