[net-next-2.6.git] / drivers / media / video / gspca / stv0680.c

/*
 * STV0680 USB Camera Driver
 *
 * Copyright (C) 2009 Hans de Goede <hdegoede@redhat.com>
 *
 * This module is adapted from the in kernel v4l1 stv680 driver:
 *
 *  STV0680 USB Camera Driver, by Kevin Sisson (kjsisson@bellsouth.net)
 *
 * Thanks to STMicroelectronics for information on the usb commands, and
 * to Steve Miller at STM for his help and encouragement while I was
 * writing this driver.
 *
 * 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.
 *
 * 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 MODULE_NAME "stv0680"

#include "gspca.h"

MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
MODULE_DESCRIPTION("STV0680 USB Camera Driver");
MODULE_LICENSE("GPL");

/* specific webcam descriptor */
struct sd {
	struct gspca_dev gspca_dev;		/* !! must be the first item */
	struct v4l2_pix_format mode;
	u8 orig_mode;
	u8 video_mode;
	u8 current_mode;
};

/* V4L2 controls supported by the driver */
static const struct ctrl sd_ctrls[] = {
};

static int stv_sndctrl(struct gspca_dev *gspca_dev, int set, u8 req, u16 val,
		       int size)
{
	int ret = -1;
	u8 req_type = 0;
	unsigned int pipe = 0;

	switch (set) {
	case 0: /*  0xc1  */
		req_type = USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT;
		pipe = usb_rcvctrlpipe(gspca_dev->dev, 0);
		break;
	case 1: /*  0x41  */
		req_type = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT;
		pipe = usb_sndctrlpipe(gspca_dev->dev, 0);
		break;
	case 2:	/*  0x80  */
		req_type = USB_DIR_IN | USB_RECIP_DEVICE;
		pipe = usb_rcvctrlpipe(gspca_dev->dev, 0);
		break;
	case 3:	/*  0x40  */
		req_type = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
		pipe = usb_sndctrlpipe(gspca_dev->dev, 0);
		break;
	}

	ret = usb_control_msg(gspca_dev->dev, pipe,
			      req, req_type,
			      val, 0, gspca_dev->usb_buf, size, 500);

	if ((ret < 0) && (req != 0x0a))
		err("usb_control_msg error %i, request = 0x%x, error = %i",
		       set, req, ret);

	return ret;
}

static int stv0680_handle_error(struct gspca_dev *gspca_dev, int ret)
{
	stv_sndctrl(gspca_dev, 0, 0x80, 0, 0x02); /* Get Last Error */
	PDEBUG(D_ERR, "last error: %i,  command = 0x%x",
	       gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]);
	return ret;
}

static int stv0680_get_video_mode(struct gspca_dev *gspca_dev)
{
	/* Note not sure if this init of usb_buf is really necessary */
	memset(gspca_dev->usb_buf, 0, 8);
	gspca_dev->usb_buf[0] = 0x0f;

	if (stv_sndctrl(gspca_dev, 0, 0x87, 0, 0x08) != 0x08) {
		PDEBUG(D_ERR, "Get_Camera_Mode failed");
		return stv0680_handle_error(gspca_dev, -EIO);
	}

	return gspca_dev->usb_buf[0]; /* 01 = VGA, 03 = QVGA, 00 = CIF */
}

static int stv0680_set_video_mode(struct gspca_dev *gspca_dev, u8 mode)
{
	struct sd *sd = (struct sd *) gspca_dev;

	if (sd->current_mode == mode)
		return 0;

	memset(gspca_dev->usb_buf, 0, 8);
	gspca_dev->usb_buf[0] = mode;

	if (stv_sndctrl(gspca_dev, 3, 0x07, 0x0100, 0x08) != 0x08) {
		PDEBUG(D_ERR, "Set_Camera_Mode failed");
		return stv0680_handle_error(gspca_dev, -EIO);
	}

	/* Verify we got what we've asked for */
	if (stv0680_get_video_mode(gspca_dev) != mode) {
		PDEBUG(D_ERR, "Error setting camera video mode!");
		return -EIO;
	}

	sd->current_mode = mode;

	return 0;
}

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

	/* Give the camera some time to settle, otherwise initalization will
	   fail on hotplug, and yes it really needs a full second. */
	msleep(1000);

	/* ping camera to be sure STV0680 is present */
	if (stv_sndctrl(gspca_dev, 0, 0x88, 0x5678, 0x02) != 0x02 ||
	    gspca_dev->usb_buf[0] != 0x56 || gspca_dev->usb_buf[1] != 0x78) {
		PDEBUG(D_ERR, "STV(e): camera ping failed!!");
		return stv0680_handle_error(gspca_dev, -ENODEV);
	}

	/* get camera descriptor */
	if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0200, 0x09) != 0x09)
		return stv0680_handle_error(gspca_dev, -ENODEV);

	if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0200, 0x22) != 0x22 ||
	    gspca_dev->usb_buf[7] != 0xa0 || gspca_dev->usb_buf[8] != 0x23) {
		PDEBUG(D_ERR, "Could not get descriptor 0200.");
		return stv0680_handle_error(gspca_dev, -ENODEV);
	}
	if (stv_sndctrl(gspca_dev, 0, 0x8a, 0, 0x02) != 0x02)
		return stv0680_handle_error(gspca_dev, -ENODEV);
	if (stv_sndctrl(gspca_dev, 0, 0x8b, 0, 0x24) != 0x24)
		return stv0680_handle_error(gspca_dev, -ENODEV);
	if (stv_sndctrl(gspca_dev, 0, 0x85, 0, 0x10) != 0x10)
		return stv0680_handle_error(gspca_dev, -ENODEV);

	if (!(gspca_dev->usb_buf[7] & 0x09)) {
		PDEBUG(D_ERR, "Camera supports neither CIF nor QVGA mode");
		return -ENODEV;
	}
	if (gspca_dev->usb_buf[7] & 0x01)
		PDEBUG(D_PROBE, "Camera supports CIF mode");
	if (gspca_dev->usb_buf[7] & 0x02)
		PDEBUG(D_PROBE, "Camera supports VGA mode");
	if (gspca_dev->usb_buf[7] & 0x04)
		PDEBUG(D_PROBE, "Camera supports QCIF mode");
	if (gspca_dev->usb_buf[7] & 0x08)
		PDEBUG(D_PROBE, "Camera supports QVGA mode");

	if (gspca_dev->usb_buf[7] & 0x01)
		sd->video_mode = 0x00; /* CIF */
	else
		sd->video_mode = 0x03; /* QVGA */

	/* FW rev, ASIC rev, sensor ID  */
	PDEBUG(D_PROBE, "Firmware rev is %i.%i",
	       gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]);
	PDEBUG(D_PROBE, "ASIC rev is %i.%i",
	       gspca_dev->usb_buf[2], gspca_dev->usb_buf[3]);
	PDEBUG(D_PROBE, "Sensor ID is %i",
	       (gspca_dev->usb_buf[4]*16) + (gspca_dev->usb_buf[5]>>4));


	ret = stv0680_get_video_mode(gspca_dev);
	if (ret < 0)
		return ret;
	sd->current_mode = sd->orig_mode = ret;

	ret = stv0680_set_video_mode(gspca_dev, sd->video_mode);
	if (ret < 0)
		return ret;

	/* Get mode details */
	if (stv_sndctrl(gspca_dev, 0, 0x8f, 0, 0x10) != 0x10)
		return stv0680_handle_error(gspca_dev, -EIO);

	cam->bulk = 1;
	cam->bulk_nurbs = 1; /* The cam cannot handle more */
	cam->bulk_size = (gspca_dev->usb_buf[0] << 24) |
			 (gspca_dev->usb_buf[1] << 16) |
			 (gspca_dev->usb_buf[2] << 8) |
			 (gspca_dev->usb_buf[3]);
	sd->mode.width = (gspca_dev->usb_buf[4] << 8) |
			 (gspca_dev->usb_buf[5]);  /* 322, 356, 644 */
	sd->mode.height = (gspca_dev->usb_buf[6] << 8) |
			  (gspca_dev->usb_buf[7]); /* 242, 292, 484 */
	sd->mode.pixelformat = V4L2_PIX_FMT_STV0680;
	sd->mode.field = V4L2_FIELD_NONE;
	sd->mode.bytesperline = sd->mode.width;
	sd->mode.sizeimage = cam->bulk_size;
	sd->mode.colorspace = V4L2_COLORSPACE_SRGB;

	/* origGain = gspca_dev->usb_buf[12]; */

	cam->cam_mode = &sd->mode;
	cam->nmodes = 1;


	ret = stv0680_set_video_mode(gspca_dev, sd->orig_mode);
	if (ret < 0)
		return ret;

	if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0100, 0x12) != 0x12 ||
	    gspca_dev->usb_buf[8] != 0x53 || gspca_dev->usb_buf[9] != 0x05) {
		err("Could not get descriptor 0100.");
		return stv0680_handle_error(gspca_dev, -EIO);
	}

	return 0;
}

/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
	return 0;
}

/* -- start the camera -- */
static int sd_start(struct gspca_dev *gspca_dev)
{
	int ret;
	struct sd *sd = (struct sd *) gspca_dev;

	ret = stv0680_set_video_mode(gspca_dev, sd->video_mode);
	if (ret < 0)
		return ret;

	if (stv_sndctrl(gspca_dev, 0, 0x85, 0, 0x10) != 0x10)
		return stv0680_handle_error(gspca_dev, -EIO);

	/* Start stream at:
	   0x0000 = CIF (352x288)
	   0x0100 = VGA (640x480)
	   0x0300 = QVGA (320x240) */
	if (stv_sndctrl(gspca_dev, 1, 0x09, sd->video_mode << 8, 0x0) != 0x0)
		return stv0680_handle_error(gspca_dev, -EIO);

	return 0;
}

static void sd_stopN(struct gspca_dev *gspca_dev)
{
	/* This is a high priority command; it stops all lower order cmds */
	if (stv_sndctrl(gspca_dev, 1, 0x04, 0x0000, 0x0) != 0x0)
		stv0680_handle_error(gspca_dev, -EIO);
}

static void sd_stop0(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;

	if (!sd->gspca_dev.present)
		return;

	stv0680_set_video_mode(gspca_dev, sd->orig_mode);
}

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

	/* Every now and then the camera sends a 16 byte packet, no idea
	   what it contains, but it is not image data, when this
	   happens the frame received before this packet is corrupt,
	   so discard it. */
	if (len != sd->mode.sizeimage) {
		gspca_dev->last_packet_type = DISCARD_PACKET;
		return;
	}

	/* Finish the previous frame, we do this upon reception of the next
	   packet, even though it is already complete so that the strange 16
	   byte packets send after a corrupt frame can discard it. */
	gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);

	/* Store the just received frame */
	gspca_frame_add(gspca_dev, FIRST_PACKET, data, len);
}

/* sub-driver description */
static const struct sd_desc sd_desc = {
	.name = MODULE_NAME,
	.ctrls = sd_ctrls,
	.nctrls = ARRAY_SIZE(sd_ctrls),
	.config = sd_config,
	.init = sd_init,
	.start = sd_start,
	.stopN = sd_stopN,
	.stop0 = sd_stop0,
	.pkt_scan = sd_pkt_scan,
};

/* -- module initialisation -- */
static const __devinitdata struct usb_device_id device_table[] = {
	{USB_DEVICE(0x0553, 0x0202)},
	{USB_DEVICE(0x041e, 0x4007)},
	{}
};
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,
#endif
};

/* -- module insert / remove -- */
static int __init sd_mod_init(void)
{
	return usb_register(&sd_driver);
}
static void __exit sd_mod_exit(void)
{
	usb_deregister(&sd_driver);
}

module_init(sd_mod_init);
module_exit(sd_mod_exit);
Commit	Line	Data
21f1b932 HG	1	/*
	2	* STV0680 USB Camera Driver
	3	*
1fddcf0e	4	* Copyright (C) 2009 Hans de Goede <hdegoede@redhat.com>
21f1b932 HG	5	*
	6	* This module is adapted from the in kernel v4l1 stv680 driver:
	7	*
	8	* STV0680 USB Camera Driver, by Kevin Sisson (kjsisson@bellsouth.net)
	9	*
	10	* Thanks to STMicroelectronics for information on the usb commands, and
	11	* to Steve Miller at STM for his help and encouragement while I was
	12	* writing this driver.
	13	*
	14	* This program is free software; you can redistribute it and/or modify
	15	* it under the terms of the GNU General Public License as published by
	16	* the Free Software Foundation; either version 2 of the License, or
	17	* (at your option) any later version.
	18	*
	19	* This program is distributed in the hope that it will be useful,
	20	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	21	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	22	* GNU General Public License for more details.
	23	*
	24	* You should have received a copy of the GNU General Public License
	25	* along with this program; if not, write to the Free Software
	26	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	27	*
	28	*/
	29
	30	#define MODULE_NAME "stv0680"
	31
	32	#include "gspca.h"
	33
1fddcf0e	34	MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
21f1b932 HG	35	MODULE_DESCRIPTION("STV0680 USB Camera Driver");
	36	MODULE_LICENSE("GPL");
	37
	38	/* specific webcam descriptor */
	39	struct sd {
	40	struct gspca_dev gspca_dev; /* !! must be the first item */
	41	struct v4l2_pix_format mode;
	42	u8 orig_mode;
	43	u8 video_mode;
	44	u8 current_mode;
	45	};
	46
	47	/* V4L2 controls supported by the driver */
7e64dc4c	48	static const struct ctrl sd_ctrls[] = {
21f1b932 HG	49	};
	50
	51	static int stv_sndctrl(struct gspca_dev *gspca_dev, int set, u8 req, u16 val,
	52	int size)
	53	{
	54	int ret = -1;
	55	u8 req_type = 0;
388a6d54	56	unsigned int pipe = 0;
21f1b932 HG	57
	58	switch (set) {
	59	case 0: /* 0xc1 */
	60	req_type = USB_DIR_IN \| USB_TYPE_VENDOR \| USB_RECIP_ENDPOINT;
388a6d54	61	pipe = usb_rcvctrlpipe(gspca_dev->dev, 0);
21f1b932 HG	62	break;
	63	case 1: /* 0x41 */
	64	req_type = USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_ENDPOINT;
388a6d54	65	pipe = usb_sndctrlpipe(gspca_dev->dev, 0);
21f1b932 HG	66	break;
	67	case 2: /* 0x80 */
	68	req_type = USB_DIR_IN \| USB_RECIP_DEVICE;
388a6d54	69	pipe = usb_rcvctrlpipe(gspca_dev->dev, 0);
21f1b932 HG	70	break;
	71	case 3: /* 0x40 */
	72	req_type = USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE;
388a6d54	73	pipe = usb_sndctrlpipe(gspca_dev->dev, 0);
21f1b932 HG	74	break;
	75	}
	76
388a6d54	77	ret = usb_control_msg(gspca_dev->dev, pipe,
21f1b932 HG	78	req, req_type,
	79	val, 0, gspca_dev->usb_buf, size, 500);
	80
	81	if ((ret < 0) && (req != 0x0a))
0b656321	82	err("usb_control_msg error %i, request = 0x%x, error = %i",
21f1b932 HG	83	set, req, ret);
	84
	85	return ret;
	86	}
	87
	88	static int stv0680_handle_error(struct gspca_dev *gspca_dev, int ret)
	89	{
	90	stv_sndctrl(gspca_dev, 0, 0x80, 0, 0x02); /* Get Last Error */
	91	PDEBUG(D_ERR, "last error: %i, command = 0x%x",
	92	gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]);
	93	return ret;
	94	}
	95
	96	static int stv0680_get_video_mode(struct gspca_dev *gspca_dev)
	97	{
	98	/* Note not sure if this init of usb_buf is really necessary */
	99	memset(gspca_dev->usb_buf, 0, 8);
	100	gspca_dev->usb_buf[0] = 0x0f;
	101
	102	if (stv_sndctrl(gspca_dev, 0, 0x87, 0, 0x08) != 0x08) {
	103	PDEBUG(D_ERR, "Get_Camera_Mode failed");
	104	return stv0680_handle_error(gspca_dev, -EIO);
	105	}
	106
	107	return gspca_dev->usb_buf[0]; /* 01 = VGA, 03 = QVGA, 00 = CIF */
	108	}
	109
	110	static int stv0680_set_video_mode(struct gspca_dev *gspca_dev, u8 mode)
	111	{
	112	struct sd sd = (struct sd ) gspca_dev;
	113
	114	if (sd->current_mode == mode)
	115	return 0;
	116
	117	memset(gspca_dev->usb_buf, 0, 8);
	118	gspca_dev->usb_buf[0] = mode;
	119
	120	if (stv_sndctrl(gspca_dev, 3, 0x07, 0x0100, 0x08) != 0x08) {
	121	PDEBUG(D_ERR, "Set_Camera_Mode failed");
	122	return stv0680_handle_error(gspca_dev, -EIO);
	123	}
	124
	125	/* Verify we got what we've asked for */
	126	if (stv0680_get_video_mode(gspca_dev) != mode) {
	127	PDEBUG(D_ERR, "Error setting camera video mode!");
	128	return -EIO;
	129	}
	130
	131	sd->current_mode = mode;
	132
	133	return 0;
	134	}
	135
	136	/* this function is called at probe time */
	137	static int sd_config(struct gspca_dev *gspca_dev,
	138	const struct usb_device_id *id)
	139	{
	140	int ret;
	141	struct sd sd = (struct sd ) gspca_dev;
	142	struct cam *cam = &gspca_dev->cam;
	143
ab269d30 HG	144	/* Give the camera some time to settle, otherwise initalization will
	145	fail on hotplug, and yes it really needs a full second. */
	146	msleep(1000);
	147
21f1b932 HG	148	/* ping camera to be sure STV0680 is present */
	149	if (stv_sndctrl(gspca_dev, 0, 0x88, 0x5678, 0x02) != 0x02 \|\|
	150	gspca_dev->usb_buf[0] != 0x56 \|\| gspca_dev->usb_buf[1] != 0x78) {
	151	PDEBUG(D_ERR, "STV(e): camera ping failed!!");
	152	return stv0680_handle_error(gspca_dev, -ENODEV);
	153	}
	154
	155	/* get camera descriptor */
	156	if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0200, 0x09) != 0x09)
	157	return stv0680_handle_error(gspca_dev, -ENODEV);
	158
	159	if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0200, 0x22) != 0x22 \|\|
	160	gspca_dev->usb_buf[7] != 0xa0 \|\| gspca_dev->usb_buf[8] != 0x23) {
	161	PDEBUG(D_ERR, "Could not get descriptor 0200.");
	162	return stv0680_handle_error(gspca_dev, -ENODEV);
	163	}
	164	if (stv_sndctrl(gspca_dev, 0, 0x8a, 0, 0x02) != 0x02)
	165	return stv0680_handle_error(gspca_dev, -ENODEV);
	166	if (stv_sndctrl(gspca_dev, 0, 0x8b, 0, 0x24) != 0x24)
	167	return stv0680_handle_error(gspca_dev, -ENODEV);
	168	if (stv_sndctrl(gspca_dev, 0, 0x85, 0, 0x10) != 0x10)
	169	return stv0680_handle_error(gspca_dev, -ENODEV);
	170
	171	if (!(gspca_dev->usb_buf[7] & 0x09)) {
	172	PDEBUG(D_ERR, "Camera supports neither CIF nor QVGA mode");
	173	return -ENODEV;
	174	}
	175	if (gspca_dev->usb_buf[7] & 0x01)
	176	PDEBUG(D_PROBE, "Camera supports CIF mode");
	177	if (gspca_dev->usb_buf[7] & 0x02)
	178	PDEBUG(D_PROBE, "Camera supports VGA mode");
388a6d54 HG	179	if (gspca_dev->usb_buf[7] & 0x04)
388a6d54 HG	180	PDEBUG(D_PROBE, "Camera supports QCIF mode");
21f1b932 HG	181	if (gspca_dev->usb_buf[7] & 0x08)
	182	PDEBUG(D_PROBE, "Camera supports QVGA mode");
	183
	184	if (gspca_dev->usb_buf[7] & 0x01)
	185	sd->video_mode = 0x00; /* CIF */
	186	else
	187	sd->video_mode = 0x03; /* QVGA */
	188
	189	/* FW rev, ASIC rev, sensor ID */
	190	PDEBUG(D_PROBE, "Firmware rev is %i.%i",
	191	gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]);
	192	PDEBUG(D_PROBE, "ASIC rev is %i.%i",
	193	gspca_dev->usb_buf[2], gspca_dev->usb_buf[3]);
	194	PDEBUG(D_PROBE, "Sensor ID is %i",
	195	(gspca_dev->usb_buf[4]*16) + (gspca_dev->usb_buf[5]>>4));
	196
	197
	198	ret = stv0680_get_video_mode(gspca_dev);
	199	if (ret < 0)
	200	return ret;
	201	sd->current_mode = sd->orig_mode = ret;
	202
	203	ret = stv0680_set_video_mode(gspca_dev, sd->video_mode);
	204	if (ret < 0)
	205	return ret;
	206
	207	/* Get mode details */
	208	if (stv_sndctrl(gspca_dev, 0, 0x8f, 0, 0x10) != 0x10)
	209	return stv0680_handle_error(gspca_dev, -EIO);
	210
	211	cam->bulk = 1;
	212	cam->bulk_nurbs = 1; /* The cam cannot handle more */
	213	cam->bulk_size = (gspca_dev->usb_buf[0] << 24) \|
	214	(gspca_dev->usb_buf[1] << 16) \|
	215	(gspca_dev->usb_buf[2] << 8) \|
	216	(gspca_dev->usb_buf[3]);
	217	sd->mode.width = (gspca_dev->usb_buf[4] << 8) \|
	218	(gspca_dev->usb_buf[5]); /* 322, 356, 644 */
	219	sd->mode.height = (gspca_dev->usb_buf[6] << 8) \|
	220	(gspca_dev->usb_buf[7]); /* 242, 292, 484 */
	221	sd->mode.pixelformat = V4L2_PIX_FMT_STV0680;
	222	sd->mode.field = V4L2_FIELD_NONE;
	223	sd->mode.bytesperline = sd->mode.width;
	224	sd->mode.sizeimage = cam->bulk_size;
	225	sd->mode.colorspace = V4L2_COLORSPACE_SRGB;
	226
	227	/* origGain = gspca_dev->usb_buf[12]; */
	228
	229	cam->cam_mode = &sd->mode;
	230	cam->nmodes = 1;
	231
	232
	233	ret = stv0680_set_video_mode(gspca_dev, sd->orig_mode);
	234	if (ret < 0)
	235	return ret;
	236
	237	if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0100, 0x12) != 0x12 \|\|
	238	gspca_dev->usb_buf[8] != 0x53 \|\| gspca_dev->usb_buf[9] != 0x05) {
0b656321	239	err("Could not get descriptor 0100.");
21f1b932 HG	240	return stv0680_handle_error(gspca_dev, -EIO);
	241	}
	242
	243	return 0;
	244	}
	245
	246	/* this function is called at probe and resume time */
	247	static int sd_init(struct gspca_dev *gspca_dev)
	248	{
	249	return 0;
	250	}
	251
	252	/* -- start the camera -- */
	253	static int sd_start(struct gspca_dev *gspca_dev)
	254	{
	255	int ret;
	256	struct sd sd = (struct sd ) gspca_dev;
	257
	258	ret = stv0680_set_video_mode(gspca_dev, sd->video_mode);
	259	if (ret < 0)
	260	return ret;
	261
	262	if (stv_sndctrl(gspca_dev, 0, 0x85, 0, 0x10) != 0x10)
	263	return stv0680_handle_error(gspca_dev, -EIO);
	264
	265	/* Start stream at:
	266	0x0000 = CIF (352x288)
	267	0x0100 = VGA (640x480)
	268	0x0300 = QVGA (320x240) */
	269	if (stv_sndctrl(gspca_dev, 1, 0x09, sd->video_mode << 8, 0x0) != 0x0)
	270	return stv0680_handle_error(gspca_dev, -EIO);
	271
	272	return 0;
	273	}
	274
	275	static void sd_stopN(struct gspca_dev *gspca_dev)
	276	{
	277	/* This is a high priority command; it stops all lower order cmds */
	278	if (stv_sndctrl(gspca_dev, 1, 0x04, 0x0000, 0x0) != 0x0)
	279	stv0680_handle_error(gspca_dev, -EIO);
	280	}
	281
	282	static void sd_stop0(struct gspca_dev *gspca_dev)
	283	{
	284	struct sd sd = (struct sd ) gspca_dev;
	285
	286	if (!sd->gspca_dev.present)
	287	return;
	288
	289	stv0680_set_video_mode(gspca_dev, sd->orig_mode);
	290	}
	291
	292	static void sd_pkt_scan(struct gspca_dev *gspca_dev,
76dd272b	293	u8 *data,
21f1b932 HG	294	int len)
	295	{
	296	struct sd sd = (struct sd ) gspca_dev;
	297
	298	/* Every now and then the camera sends a 16 byte packet, no idea
	299	what it contains, but it is not image data, when this
	300	happens the frame received before this packet is corrupt,
	301	so discard it. */
	302	if (len != sd->mode.sizeimage) {
	303	gspca_dev->last_packet_type = DISCARD_PACKET;
	304	return;
	305	}
	306
	307	/* Finish the previous frame, we do this upon reception of the next
	308	packet, even though it is already complete so that the strange 16
	309	byte packets send after a corrupt frame can discard it. */
76dd272b	310	gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
21f1b932 HG	311
21f1b932 HG	312	/* Store the just received frame */
76dd272b	313	gspca_frame_add(gspca_dev, FIRST_PACKET, data, len);
21f1b932 HG	314	}
	315
	316	/* sub-driver description */
	317	static const struct sd_desc sd_desc = {
	318	.name = MODULE_NAME,
	319	.ctrls = sd_ctrls,
	320	.nctrls = ARRAY_SIZE(sd_ctrls),
	321	.config = sd_config,
	322	.init = sd_init,
	323	.start = sd_start,
	324	.stopN = sd_stopN,
	325	.stop0 = sd_stop0,
	326	.pkt_scan = sd_pkt_scan,
	327	};
	328
	329	/* -- module initialisation -- */
	330	static const __devinitdata struct usb_device_id device_table[] = {
	331	{USB_DEVICE(0x0553, 0x0202)},
	332	{USB_DEVICE(0x041e, 0x4007)},
	333	{}
	334	};
	335	MODULE_DEVICE_TABLE(usb, device_table);
	336
	337	/* -- device connect -- */
	338	static int sd_probe(struct usb_interface *intf,
	339	const struct usb_device_id *id)
	340	{
	341	return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
	342	THIS_MODULE);
	343	}
	344
	345	static struct usb_driver sd_driver = {
	346	.name = MODULE_NAME,
	347	.id_table = device_table,
	348	.probe = sd_probe,
	349	.disconnect = gspca_disconnect,
	350	#ifdef CONFIG_PM
	351	.suspend = gspca_suspend,
	352	.resume = gspca_resume,
	353	#endif
	354	};
	355
	356	/* -- module insert / remove -- */
	357	static int __init sd_mod_init(void)
	358	{
54826437	359	return usb_register(&sd_driver);
21f1b932 HG	360	}
	361	static void __exit sd_mod_exit(void)
	362	{
	363	usb_deregister(&sd_driver);
21f1b932 HG	364	}
	365
	366	module_init(sd_mod_init);
	367	module_exit(sd_mod_exit);