[linux-2.6-block.git] / drivers / media / video / gspca / kinect.c

/*
 * kinect sensor device camera, gspca driver
 *
 * Copyright (C) 2011  Antonio Ospite <ospite@studenti.unina.it>
 *
 * Based on the OpenKinect project and libfreenect
 * http://openkinect.org/wiki/Init_Analysis
 *
 * Special thanks to Steven Toth and kernellabs.com for sponsoring a Kinect
 * sensor device which I tested the driver on.
 *
 * 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
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#define MODULE_NAME "kinect"

#include "gspca.h"

#define CTRL_TIMEOUT 500

MODULE_AUTHOR("Antonio Ospite <ospite@studenti.unina.it>");
MODULE_DESCRIPTION("GSPCA/Kinect Sensor Device USB Camera Driver");
MODULE_LICENSE("GPL");

struct pkt_hdr {
	uint8_t magic[2];
	uint8_t pad;
	uint8_t flag;
	uint8_t unk1;
	uint8_t seq;
	uint8_t unk2;
	uint8_t unk3;
	uint32_t timestamp;
};

struct cam_hdr {
	uint8_t magic[2];
	uint16_t len;
	uint16_t cmd;
	uint16_t tag;
};

/* specific webcam descriptor */
struct sd {
	struct gspca_dev gspca_dev; /* !! must be the first item */
	uint16_t cam_tag;           /* a sequence number for packets */
	uint8_t stream_flag;        /* to identify different stream types */
	uint8_t obuf[0x400];        /* output buffer for control commands */
	uint8_t ibuf[0x200];        /* input buffer for control commands */
};

#define MODE_640x480   0x0001
#define MODE_640x488   0x0002
#define MODE_1280x1024 0x0004

#define FORMAT_BAYER   0x0010
#define FORMAT_UYVY    0x0020
#define FORMAT_Y10B    0x0040

#define FPS_HIGH       0x0100

static const struct v4l2_pix_format video_camera_mode[] = {
	{640, 480, V4L2_PIX_FMT_SGRBG8, V4L2_FIELD_NONE,
	 .bytesperline = 640,
	 .sizeimage = 640 * 480,
	 .colorspace = V4L2_COLORSPACE_SRGB,
	 .priv = MODE_640x480 | FORMAT_BAYER | FPS_HIGH},
	{640, 480, V4L2_PIX_FMT_UYVY, V4L2_FIELD_NONE,
	 .bytesperline = 640 * 2,
	 .sizeimage = 640 * 480 * 2,
	 .colorspace = V4L2_COLORSPACE_SRGB,
	 .priv = MODE_640x480 | FORMAT_UYVY},
	{1280, 1024, V4L2_PIX_FMT_SGRBG8, V4L2_FIELD_NONE,
	 .bytesperline = 1280,
	 .sizeimage = 1280 * 1024,
	 .colorspace = V4L2_COLORSPACE_SRGB,
	 .priv = MODE_1280x1024 | FORMAT_BAYER},
	{640, 488, V4L2_PIX_FMT_Y10BPACK, V4L2_FIELD_NONE,
	 .bytesperline = 640 * 10 / 8,
	 .sizeimage =  640 * 488 * 10 / 8,
	 .colorspace = V4L2_COLORSPACE_SRGB,
	 .priv = MODE_640x488 | FORMAT_Y10B | FPS_HIGH},
	{1280, 1024, V4L2_PIX_FMT_Y10BPACK, V4L2_FIELD_NONE,
	 .bytesperline = 1280 * 10 / 8,
	 .sizeimage =  1280 * 1024 * 10 / 8,
	 .colorspace = V4L2_COLORSPACE_SRGB,
	 .priv = MODE_1280x1024 | FORMAT_Y10B},
};

static int kinect_write(struct usb_device *udev, uint8_t *data,
			uint16_t wLength)
{
	return usb_control_msg(udev,
			      usb_sndctrlpipe(udev, 0),
			      0x00,
			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			      0, 0, data, wLength, CTRL_TIMEOUT);
}

static int kinect_read(struct usb_device *udev, uint8_t *data, uint16_t wLength)
{
	return usb_control_msg(udev,
			      usb_rcvctrlpipe(udev, 0),
			      0x00,
			      USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			      0, 0, data, wLength, CTRL_TIMEOUT);
}

static int send_cmd(struct gspca_dev *gspca_dev, uint16_t cmd, void *cmdbuf,
		unsigned int cmd_len, void *replybuf, unsigned int reply_len)
{
	struct sd *sd = (struct sd *) gspca_dev;
	struct usb_device *udev = gspca_dev->dev;
	int res, actual_len;
	uint8_t *obuf = sd->obuf;
	uint8_t *ibuf = sd->ibuf;
	struct cam_hdr *chdr = (void *)obuf;
	struct cam_hdr *rhdr = (void *)ibuf;

	if (cmd_len & 1 || cmd_len > (0x400 - sizeof(*chdr))) {
		pr_err("send_cmd: Invalid command length (0x%x)\n", cmd_len);
		return -1;
	}

	chdr->magic[0] = 0x47;
	chdr->magic[1] = 0x4d;
	chdr->cmd = cpu_to_le16(cmd);
	chdr->tag = cpu_to_le16(sd->cam_tag);
	chdr->len = cpu_to_le16(cmd_len / 2);

	memcpy(obuf+sizeof(*chdr), cmdbuf, cmd_len);

	res = kinect_write(udev, obuf, cmd_len + sizeof(*chdr));
	PDEBUG(D_USBO, "Control cmd=%04x tag=%04x len=%04x: %d", cmd,
		sd->cam_tag, cmd_len, res);
	if (res < 0) {
		pr_err("send_cmd: Output control transfer failed (%d)\n", res);
		return res;
	}

	do {
		actual_len = kinect_read(udev, ibuf, 0x200);
	} while (actual_len == 0);
	PDEBUG(D_USBO, "Control reply: %d", res);
	if (actual_len < sizeof(*rhdr)) {
		pr_err("send_cmd: Input control transfer failed (%d)\n", res);
		return res;
	}
	actual_len -= sizeof(*rhdr);

	if (rhdr->magic[0] != 0x52 || rhdr->magic[1] != 0x42) {
		pr_err("send_cmd: Bad magic %02x %02x\n",
		       rhdr->magic[0], rhdr->magic[1]);
		return -1;
	}
	if (rhdr->cmd != chdr->cmd) {
		pr_err("send_cmd: Bad cmd %02x != %02x\n",
		       rhdr->cmd, chdr->cmd);
		return -1;
	}
	if (rhdr->tag != chdr->tag) {
		pr_err("send_cmd: Bad tag %04x != %04x\n",
		       rhdr->tag, chdr->tag);
		return -1;
	}
	if (cpu_to_le16(rhdr->len) != (actual_len/2)) {
		pr_err("send_cmd: Bad len %04x != %04x\n",
		       cpu_to_le16(rhdr->len), (int)(actual_len/2));
		return -1;
	}

	if (actual_len > reply_len) {
		pr_warn("send_cmd: Data buffer is %d bytes long, but got %d bytes\n",
			reply_len, actual_len);
		memcpy(replybuf, ibuf+sizeof(*rhdr), reply_len);
	} else {
		memcpy(replybuf, ibuf+sizeof(*rhdr), actual_len);
	}

	sd->cam_tag++;

	return actual_len;
}

static int write_register(struct gspca_dev *gspca_dev, uint16_t reg,
			uint16_t data)
{
	uint16_t reply[2];
	uint16_t cmd[2];
	int res;

	cmd[0] = cpu_to_le16(reg);
	cmd[1] = cpu_to_le16(data);

	PDEBUG(D_USBO, "Write Reg 0x%04x <= 0x%02x", reg, data);
	res = send_cmd(gspca_dev, 0x03, cmd, 4, reply, 4);
	if (res < 0)
		return res;
	if (res != 2) {
		pr_warn("send_cmd returned %d [%04x %04x], 0000 expected\n",
			res, reply[0], reply[1]);
	}
	return 0;
}

/* this function is called at probe time */
static int sd_config(struct gspca_dev *gspca_dev,
		     const struct usb_device_id *id)
{
	struct sd *sd = (struct sd *) gspca_dev;
	struct cam *cam;

	sd->cam_tag = 0;

	/* Only video stream is supported for now,
	 * which has stream flag = 0x80 */
	sd->stream_flag = 0x80;

	cam = &gspca_dev->cam;

	cam->cam_mode = video_camera_mode;
	cam->nmodes = ARRAY_SIZE(video_camera_mode);

#if 0
	/* Setting those values is not needed for video stream */
	cam->npkt = 15;
	gspca_dev->pkt_size = 960 * 2;
#endif

	return 0;
}

/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
	PDEBUG(D_PROBE, "Kinect Camera device.");

	return 0;
}

static int sd_start(struct gspca_dev *gspca_dev)
{
	int mode;
	uint8_t fmt_reg, fmt_val;
	uint8_t res_reg, res_val;
	uint8_t fps_reg, fps_val;
	uint8_t mode_val;

	mode = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;

	if (mode & FORMAT_Y10B) {
		fmt_reg = 0x19;
		res_reg = 0x1a;
		fps_reg = 0x1b;
		mode_val = 0x03;
	} else {
		fmt_reg = 0x0c;
		res_reg = 0x0d;
		fps_reg = 0x0e;
		mode_val = 0x01;
	}

	/* format */
	if (mode & FORMAT_UYVY)
		fmt_val = 0x05;
	else
		fmt_val = 0x00;

	if (mode & MODE_1280x1024)
		res_val = 0x02;
	else
		res_val = 0x01;

	if (mode & FPS_HIGH)
		fps_val = 0x1e;
	else
		fps_val = 0x0f;


	/* turn off IR-reset function */
	write_register(gspca_dev, 0x105, 0x00);

	/* Reset video stream */
	write_register(gspca_dev, 0x05, 0x00);

	/* Due to some ridiculous condition in the firmware, we have to start
	 * and stop the depth stream before the camera will hand us 1280x1024
	 * IR.  This is a stupid workaround, but we've yet to find a better
	 * solution.
	 *
	 * Thanks to Drew Fisher for figuring this out.
	 */
	if (mode & (FORMAT_Y10B | MODE_1280x1024)) {
		write_register(gspca_dev, 0x13, 0x01);
		write_register(gspca_dev, 0x14, 0x1e);
		write_register(gspca_dev, 0x06, 0x02);
		write_register(gspca_dev, 0x06, 0x00);
	}

	write_register(gspca_dev, fmt_reg, fmt_val);
	write_register(gspca_dev, res_reg, res_val);
	write_register(gspca_dev, fps_reg, fps_val);

	/* Start video stream */
	write_register(gspca_dev, 0x05, mode_val);

	/* disable Hflip */
	write_register(gspca_dev, 0x47, 0x00);

	return 0;
}

static void sd_stopN(struct gspca_dev *gspca_dev)
{
	/* reset video stream */
	write_register(gspca_dev, 0x05, 0x00);
}

static void sd_pkt_scan(struct gspca_dev *gspca_dev, u8 *__data, int len)
{
	struct sd *sd = (struct sd *) gspca_dev;

	struct pkt_hdr *hdr = (void *)__data;
	uint8_t *data = __data + sizeof(*hdr);
	int datalen = len - sizeof(*hdr);

	uint8_t sof = sd->stream_flag | 1;
	uint8_t mof = sd->stream_flag | 2;
	uint8_t eof = sd->stream_flag | 5;

	if (len < 12)
		return;

	if (hdr->magic[0] != 'R' || hdr->magic[1] != 'B') {
		pr_warn("[Stream %02x] Invalid magic %02x%02x\n",
			sd->stream_flag, hdr->magic[0], hdr->magic[1]);
		return;
	}

	if (hdr->flag == sof)
		gspca_frame_add(gspca_dev, FIRST_PACKET, data, datalen);

	else if (hdr->flag == mof)
		gspca_frame_add(gspca_dev, INTER_PACKET, data, datalen);

	else if (hdr->flag == eof)
		gspca_frame_add(gspca_dev, LAST_PACKET, data, datalen);

	else
		pr_warn("Packet type not recognized...\n");
}

/* sub-driver description */
static const struct sd_desc sd_desc = {
	.name      = MODULE_NAME,
	.config    = sd_config,
	.init      = sd_init,
	.start     = sd_start,
	.stopN     = sd_stopN,
	.pkt_scan  = sd_pkt_scan,
	/*
	.get_streamparm = sd_get_streamparm,
	.set_streamparm = sd_set_streamparm,
	*/
};

/* -- module initialisation -- */
static const struct usb_device_id device_table[] = {
	{USB_DEVICE(0x045e, 0x02ae)},
	{}
};

MODULE_DEVICE_TABLE(usb, device_table);

/* -- device connect -- */
static int sd_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
	return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
				THIS_MODULE);
}

static struct usb_driver sd_driver = {
	.name       = MODULE_NAME,
	.id_table   = device_table,
	.probe      = sd_probe,
	.disconnect = gspca_disconnect,
#ifdef CONFIG_PM
	.suspend    = gspca_suspend,
	.resume     = gspca_resume,
	.reset_resume = gspca_resume,
#endif
};

module_usb_driver(sd_driver);
Commit	Line	Data
6612155a AO	1	/*
	2	* kinect sensor device camera, gspca driver
	3	*
	4	* Copyright (C) 2011 Antonio Ospite <ospite@studenti.unina.it>
	5	*
	6	* Based on the OpenKinect project and libfreenect
	7	* http://openkinect.org/wiki/Init_Analysis
	8	*
	9	* Special thanks to Steven Toth and kernellabs.com for sponsoring a Kinect
	10	* sensor device which I tested the driver on.
	11	*
	12	* This program is free software; you can redistribute it and/or modify
	13	* it under the terms of the GNU General Public License as published by
	14	* the Free Software Foundation; either version 2 of the License, or
	15	* any later version.
	16	*
	17	* This program is distributed in the hope that it will be useful,
	18	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	20	* GNU General Public License for more details.
	21	*
	22	* You should have received a copy of the GNU General Public License
	23	* along with this program; if not, write to the Free Software
	24	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	25	*/
	26
133a9fe9 JP	27	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
133a9fe9 JP	28
6612155a AO	29	#define MODULE_NAME "kinect"
	30
	31	#include "gspca.h"
	32
	33	#define CTRL_TIMEOUT 500
	34
	35	MODULE_AUTHOR("Antonio Ospite <ospite@studenti.unina.it>");
	36	MODULE_DESCRIPTION("GSPCA/Kinect Sensor Device USB Camera Driver");
	37	MODULE_LICENSE("GPL");
	38
6612155a AO	39	struct pkt_hdr {
	40	uint8_t magic[2];
	41	uint8_t pad;
	42	uint8_t flag;
	43	uint8_t unk1;
	44	uint8_t seq;
	45	uint8_t unk2;
	46	uint8_t unk3;
	47	uint32_t timestamp;
	48	};
	49
	50	struct cam_hdr {
	51	uint8_t magic[2];
	52	uint16_t len;
	53	uint16_t cmd;
	54	uint16_t tag;
	55	};
	56
	57	/* specific webcam descriptor */
	58	struct sd {
	59	struct gspca_dev gspca_dev; /* !! must be the first item */
	60	uint16_t cam_tag; /* a sequence number for packets */
3fabe8f4	61	uint8_t stream_flag; /* to identify different stream types */
bb066467 DF	62	uint8_t obuf[0x400]; /* output buffer for control commands */
bb066467 DF	63	uint8_t ibuf[0x200]; /* input buffer for control commands */
6612155a AO	64	};
6612155a AO	65
6612155a AO	66	#define MODE_640x480 0x0001
	67	#define MODE_640x488 0x0002
	68	#define MODE_1280x1024 0x0004
	69
	70	#define FORMAT_BAYER 0x0010
	71	#define FORMAT_UYVY 0x0020
	72	#define FORMAT_Y10B 0x0040
	73
	74	#define FPS_HIGH 0x0100
	75
	76	static const struct v4l2_pix_format video_camera_mode[] = {
	77	{640, 480, V4L2_PIX_FMT_SGRBG8, V4L2_FIELD_NONE,
	78	.bytesperline = 640,
	79	.sizeimage = 640 * 480,
	80	.colorspace = V4L2_COLORSPACE_SRGB,
	81	.priv = MODE_640x480 \| FORMAT_BAYER \| FPS_HIGH},
	82	{640, 480, V4L2_PIX_FMT_UYVY, V4L2_FIELD_NONE,
	83	.bytesperline = 640 * 2,
	84	.sizeimage = 640 * 480 * 2,
	85	.colorspace = V4L2_COLORSPACE_SRGB,
	86	.priv = MODE_640x480 \| FORMAT_UYVY},
	87	{1280, 1024, V4L2_PIX_FMT_SGRBG8, V4L2_FIELD_NONE,
	88	.bytesperline = 1280,
	89	.sizeimage = 1280 * 1024,
	90	.colorspace = V4L2_COLORSPACE_SRGB,
	91	.priv = MODE_1280x1024 \| FORMAT_BAYER},
	92	{640, 488, V4L2_PIX_FMT_Y10BPACK, V4L2_FIELD_NONE,
	93	.bytesperline = 640 * 10 / 8,
	94	.sizeimage = 640 * 488 * 10 / 8,
	95	.colorspace = V4L2_COLORSPACE_SRGB,
	96	.priv = MODE_640x488 \| FORMAT_Y10B \| FPS_HIGH},
	97	{1280, 1024, V4L2_PIX_FMT_Y10BPACK, V4L2_FIELD_NONE,
	98	.bytesperline = 1280 * 10 / 8,
	99	.sizeimage = 1280 * 1024 * 10 / 8,
	100	.colorspace = V4L2_COLORSPACE_SRGB,
	101	.priv = MODE_1280x1024 \| FORMAT_Y10B},
	102	};
	103
	104	static int kinect_write(struct usb_device udev, uint8_t data,
	105	uint16_t wLength)
	106	{
	107	return usb_control_msg(udev,
	108	usb_sndctrlpipe(udev, 0),
	109	0x00,
	110	USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	111	0, 0, data, wLength, CTRL_TIMEOUT);
	112	}
	113
	114	static int kinect_read(struct usb_device udev, uint8_t data, uint16_t wLength)
	115	{
	116	return usb_control_msg(udev,
	117	usb_rcvctrlpipe(udev, 0),
	118	0x00,
	119	USB_DIR_IN \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	120	0, 0, data, wLength, CTRL_TIMEOUT);
	121	}
	122
	123	static int send_cmd(struct gspca_dev gspca_dev, uint16_t cmd, void cmdbuf,
	124	unsigned int cmd_len, void *replybuf, unsigned int reply_len)
	125	{
	126	struct sd sd = (struct sd ) gspca_dev;
	127	struct usb_device *udev = gspca_dev->dev;
	128	int res, actual_len;
bb066467 DF	129	uint8_t *obuf = sd->obuf;
bb066467 DF	130	uint8_t *ibuf = sd->ibuf;
6612155a AO	131	struct cam_hdr chdr = (void )obuf;
	132	struct cam_hdr rhdr = (void )ibuf;
	133
	134	if (cmd_len & 1 \|\| cmd_len > (0x400 - sizeof(*chdr))) {
133a9fe9	135	pr_err("send_cmd: Invalid command length (0x%x)\n", cmd_len);
6612155a AO	136	return -1;
	137	}
	138
	139	chdr->magic[0] = 0x47;
	140	chdr->magic[1] = 0x4d;
	141	chdr->cmd = cpu_to_le16(cmd);
	142	chdr->tag = cpu_to_le16(sd->cam_tag);
	143	chdr->len = cpu_to_le16(cmd_len / 2);
	144
	145	memcpy(obuf+sizeof(*chdr), cmdbuf, cmd_len);
	146
	147	res = kinect_write(udev, obuf, cmd_len + sizeof(*chdr));
	148	PDEBUG(D_USBO, "Control cmd=%04x tag=%04x len=%04x: %d", cmd,
	149	sd->cam_tag, cmd_len, res);
	150	if (res < 0) {
133a9fe9	151	pr_err("send_cmd: Output control transfer failed (%d)\n", res);
6612155a AO	152	return res;
	153	}
	154
	155	do {
	156	actual_len = kinect_read(udev, ibuf, 0x200);
	157	} while (actual_len == 0);
	158	PDEBUG(D_USBO, "Control reply: %d", res);
	159	if (actual_len < sizeof(*rhdr)) {
133a9fe9	160	pr_err("send_cmd: Input control transfer failed (%d)\n", res);
6612155a AO	161	return res;
	162	}
	163	actual_len -= sizeof(*rhdr);
	164
	165	if (rhdr->magic[0] != 0x52 \|\| rhdr->magic[1] != 0x42) {
133a9fe9 JP	166	pr_err("send_cmd: Bad magic %02x %02x\n",
133a9fe9 JP	167	rhdr->magic[0], rhdr->magic[1]);
6612155a AO	168	return -1;
	169	}
	170	if (rhdr->cmd != chdr->cmd) {
133a9fe9 JP	171	pr_err("send_cmd: Bad cmd %02x != %02x\n",
133a9fe9 JP	172	rhdr->cmd, chdr->cmd);
6612155a AO	173	return -1;
	174	}
	175	if (rhdr->tag != chdr->tag) {
133a9fe9 JP	176	pr_err("send_cmd: Bad tag %04x != %04x\n",
133a9fe9 JP	177	rhdr->tag, chdr->tag);
6612155a AO	178	return -1;
	179	}
	180	if (cpu_to_le16(rhdr->len) != (actual_len/2)) {
133a9fe9 JP	181	pr_err("send_cmd: Bad len %04x != %04x\n",
133a9fe9 JP	182	cpu_to_le16(rhdr->len), (int)(actual_len/2));
6612155a AO	183	return -1;
	184	}
	185
	186	if (actual_len > reply_len) {
133a9fe9 JP	187	pr_warn("send_cmd: Data buffer is %d bytes long, but got %d bytes\n",
133a9fe9 JP	188	reply_len, actual_len);
6612155a AO	189	memcpy(replybuf, ibuf+sizeof(*rhdr), reply_len);
	190	} else {
	191	memcpy(replybuf, ibuf+sizeof(*rhdr), actual_len);
	192	}
	193
	194	sd->cam_tag++;
	195
	196	return actual_len;
	197	}
	198
	199	static int write_register(struct gspca_dev *gspca_dev, uint16_t reg,
	200	uint16_t data)
	201	{
	202	uint16_t reply[2];
	203	uint16_t cmd[2];
	204	int res;
	205
	206	cmd[0] = cpu_to_le16(reg);
	207	cmd[1] = cpu_to_le16(data);
	208
	209	PDEBUG(D_USBO, "Write Reg 0x%04x <= 0x%02x", reg, data);
	210	res = send_cmd(gspca_dev, 0x03, cmd, 4, reply, 4);
	211	if (res < 0)
	212	return res;
	213	if (res != 2) {
133a9fe9 JP	214	pr_warn("send_cmd returned %d [%04x %04x], 0000 expected\n",
133a9fe9 JP	215	res, reply[0], reply[1]);
6612155a AO	216	}
	217	return 0;
	218	}
	219
	220	/* this function is called at probe time */
	221	static int sd_config(struct gspca_dev *gspca_dev,
	222	const struct usb_device_id *id)
	223	{
	224	struct sd sd = (struct sd ) gspca_dev;
	225	struct cam *cam;
	226
	227	sd->cam_tag = 0;
	228
f1703aa6	229	/* Only video stream is supported for now,
6612155a AO	230	* which has stream flag = 0x80 */
	231	sd->stream_flag = 0x80;
	232
	233	cam = &gspca_dev->cam;
	234
	235	cam->cam_mode = video_camera_mode;
	236	cam->nmodes = ARRAY_SIZE(video_camera_mode);
	237
	238	#if 0
f1703aa6	239	/* Setting those values is not needed for video stream */
6612155a AO	240	cam->npkt = 15;
	241	gspca_dev->pkt_size = 960 * 2;
	242	#endif
	243
	244	return 0;
	245	}
	246
	247	/* this function is called at probe and resume time */
	248	static int sd_init(struct gspca_dev *gspca_dev)
	249	{
	250	PDEBUG(D_PROBE, "Kinect Camera device.");
	251
	252	return 0;
	253	}
	254
	255	static int sd_start(struct gspca_dev *gspca_dev)
	256	{
	257	int mode;
	258	uint8_t fmt_reg, fmt_val;
	259	uint8_t res_reg, res_val;
	260	uint8_t fps_reg, fps_val;
	261	uint8_t mode_val;
	262
	263	mode = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
	264
	265	if (mode & FORMAT_Y10B) {
	266	fmt_reg = 0x19;
	267	res_reg = 0x1a;
	268	fps_reg = 0x1b;
	269	mode_val = 0x03;
	270	} else {
	271	fmt_reg = 0x0c;
	272	res_reg = 0x0d;
	273	fps_reg = 0x0e;
	274	mode_val = 0x01;
	275	}
	276
	277	/* format */
	278	if (mode & FORMAT_UYVY)
	279	fmt_val = 0x05;
	280	else
	281	fmt_val = 0x00;
	282
	283	if (mode & MODE_1280x1024)
	284	res_val = 0x02;
	285	else
	286	res_val = 0x01;
	287
	288	if (mode & FPS_HIGH)
	289	fps_val = 0x1e;
	290	else
	291	fps_val = 0x0f;
	292
	293
	294	/* turn off IR-reset function */
	295	write_register(gspca_dev, 0x105, 0x00);
	296
	297	/* Reset video stream */
	298	write_register(gspca_dev, 0x05, 0x00);
	299
	300	/* Due to some ridiculous condition in the firmware, we have to start
	301	* and stop the depth stream before the camera will hand us 1280x1024
	302	* IR. This is a stupid workaround, but we've yet to find a better
	303	* solution.
304	*
305	* Thanks to Drew Fisher for figuring this out.
306	*/
307	if (mode & (FORMAT_Y10B \| MODE_1280x1024)) {
308	write_register(gspca_dev, 0x13, 0x01);
309	write_register(gspca_dev, 0x14, 0x1e);
310	write_register(gspca_dev, 0x06, 0x02);
311	write_register(gspca_dev, 0x06, 0x00);
312	}
313
314	write_register(gspca_dev, fmt_reg, fmt_val);
315	write_register(gspca_dev, res_reg, res_val);
316	write_register(gspca_dev, fps_reg, fps_val);
317
318	/* Start video stream */
319	write_register(gspca_dev, 0x05, mode_val);
320
321	/* disable Hflip */
322	write_register(gspca_dev, 0x47, 0x00);
323
324	return 0;
325	}
326
327	static void sd_stopN(struct gspca_dev *gspca_dev)
328	{
329	/* reset video stream */
330	write_register(gspca_dev, 0x05, 0x00);
331	}
332
333	static void sd_pkt_scan(struct gspca_dev gspca_dev, u8 __data, int len)
334	{
335	struct sd sd = (struct sd ) gspca_dev;
336
337	struct pkt_hdr hdr = (void )__data;
338	uint8_t data = __data + sizeof(hdr);
339	int datalen = len - sizeof(*hdr);
340
341	uint8_t sof = sd->stream_flag \| 1;
342	uint8_t mof = sd->stream_flag \| 2;
343	uint8_t eof = sd->stream_flag \| 5;
344
345	if (len < 12)
346	return;
347
348	if (hdr->magic[0] != 'R' \|\| hdr->magic[1] != 'B') {
133a9fe9 JP	349	pr_warn("[Stream %02x] Invalid magic %02x%02x\n",
133a9fe9 JP	350	sd->stream_flag, hdr->magic[0], hdr->magic[1]);
6612155a AO	351	return;
	352	}
	353
	354	if (hdr->flag == sof)
	355	gspca_frame_add(gspca_dev, FIRST_PACKET, data, datalen);
	356
	357	else if (hdr->flag == mof)
	358	gspca_frame_add(gspca_dev, INTER_PACKET, data, datalen);
	359
	360	else if (hdr->flag == eof)
	361	gspca_frame_add(gspca_dev, LAST_PACKET, data, datalen);
	362
	363	else
133a9fe9	364	pr_warn("Packet type not recognized...\n");
6612155a AO	365	}
	366
	367	/* sub-driver description */
	368	static const struct sd_desc sd_desc = {
	369	.name = MODULE_NAME,
6612155a AO	370	.config = sd_config,
	371	.init = sd_init,
	372	.start = sd_start,
	373	.stopN = sd_stopN,
	374	.pkt_scan = sd_pkt_scan,
	375	/*
6612155a AO	376	.get_streamparm = sd_get_streamparm,
	377	.set_streamparm = sd_set_streamparm,
	378	*/
	379	};
	380
	381	/* -- module initialisation -- */
f7242d30	382	static const struct usb_device_id device_table[] = {
6612155a AO	383	{USB_DEVICE(0x045e, 0x02ae)},
	384	{}
	385	};
	386
	387	MODULE_DEVICE_TABLE(usb, device_table);
	388
	389	/* -- device connect -- */
	390	static int sd_probe(struct usb_interface intf, const struct usb_device_id id)
	391	{
	392	return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
	393	THIS_MODULE);
	394	}
	395
	396	static struct usb_driver sd_driver = {
	397	.name = MODULE_NAME,
	398	.id_table = device_table,
	399	.probe = sd_probe,
	400	.disconnect = gspca_disconnect,
	401	#ifdef CONFIG_PM
	402	.suspend = gspca_suspend,
	403	.resume = gspca_resume,
8bb58964	404	.reset_resume = gspca_resume,
6612155a AO	405	#endif
	406	};
	407
ecb3b2b3	408	module_usb_driver(sd_driver);