[deliverable/linux.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 pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#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))
		pr_err("usb_control_msg error %i, request = 0x%x, error = %i\n",
		       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) {
		pr_err("Could not get descriptor 0100\n");
		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 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_usb_driver(sd_driver);
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
133a9fe9 JP	30	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
133a9fe9 JP	31
21f1b932 HG	32	#define MODULE_NAME "stv0680"
	33
	34	#include "gspca.h"
	35
1fddcf0e	36	MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
21f1b932 HG	37	MODULE_DESCRIPTION("STV0680 USB Camera Driver");
	38	MODULE_LICENSE("GPL");
	39
	40	/* specific webcam descriptor */
	41	struct sd {
	42	struct gspca_dev gspca_dev; /* !! must be the first item */
	43	struct v4l2_pix_format mode;
	44	u8 orig_mode;
	45	u8 video_mode;
	46	u8 current_mode;
	47	};
	48
	49	/* V4L2 controls supported by the driver */
7e64dc4c	50	static const struct ctrl sd_ctrls[] = {
21f1b932 HG	51	};
	52
	53	static int stv_sndctrl(struct gspca_dev *gspca_dev, int set, u8 req, u16 val,
	54	int size)
	55	{
	56	int ret = -1;
	57	u8 req_type = 0;
388a6d54	58	unsigned int pipe = 0;
21f1b932 HG	59
	60	switch (set) {
	61	case 0: /* 0xc1 */
	62	req_type = USB_DIR_IN \| USB_TYPE_VENDOR \| USB_RECIP_ENDPOINT;
388a6d54	63	pipe = usb_rcvctrlpipe(gspca_dev->dev, 0);
21f1b932 HG	64	break;
	65	case 1: /* 0x41 */
	66	req_type = USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_ENDPOINT;
388a6d54	67	pipe = usb_sndctrlpipe(gspca_dev->dev, 0);
21f1b932 HG	68	break;
	69	case 2: /* 0x80 */
	70	req_type = USB_DIR_IN \| USB_RECIP_DEVICE;
388a6d54	71	pipe = usb_rcvctrlpipe(gspca_dev->dev, 0);
21f1b932 HG	72	break;
	73	case 3: /* 0x40 */
	74	req_type = USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE;
388a6d54	75	pipe = usb_sndctrlpipe(gspca_dev->dev, 0);
21f1b932 HG	76	break;
	77	}
	78
388a6d54	79	ret = usb_control_msg(gspca_dev->dev, pipe,
21f1b932 HG	80	req, req_type,
	81	val, 0, gspca_dev->usb_buf, size, 500);
	82
	83	if ((ret < 0) && (req != 0x0a))
133a9fe9	84	pr_err("usb_control_msg error %i, request = 0x%x, error = %i\n",
21f1b932 HG	85	set, req, ret);
	86
	87	return ret;
	88	}
	89
	90	static int stv0680_handle_error(struct gspca_dev *gspca_dev, int ret)
	91	{
	92	stv_sndctrl(gspca_dev, 0, 0x80, 0, 0x02); /* Get Last Error */
	93	PDEBUG(D_ERR, "last error: %i, command = 0x%x",
	94	gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]);
	95	return ret;
	96	}
	97
	98	static int stv0680_get_video_mode(struct gspca_dev *gspca_dev)
	99	{
	100	/* Note not sure if this init of usb_buf is really necessary */
	101	memset(gspca_dev->usb_buf, 0, 8);
	102	gspca_dev->usb_buf[0] = 0x0f;
	103
	104	if (stv_sndctrl(gspca_dev, 0, 0x87, 0, 0x08) != 0x08) {
	105	PDEBUG(D_ERR, "Get_Camera_Mode failed");
	106	return stv0680_handle_error(gspca_dev, -EIO);
	107	}
	108
	109	return gspca_dev->usb_buf[0]; /* 01 = VGA, 03 = QVGA, 00 = CIF */
	110	}
	111
	112	static int stv0680_set_video_mode(struct gspca_dev *gspca_dev, u8 mode)
	113	{
	114	struct sd sd = (struct sd ) gspca_dev;
	115
	116	if (sd->current_mode == mode)
	117	return 0;
	118
	119	memset(gspca_dev->usb_buf, 0, 8);
	120	gspca_dev->usb_buf[0] = mode;
	121
	122	if (stv_sndctrl(gspca_dev, 3, 0x07, 0x0100, 0x08) != 0x08) {
	123	PDEBUG(D_ERR, "Set_Camera_Mode failed");
	124	return stv0680_handle_error(gspca_dev, -EIO);
	125	}
	126
	127	/* Verify we got what we've asked for */
	128	if (stv0680_get_video_mode(gspca_dev) != mode) {
	129	PDEBUG(D_ERR, "Error setting camera video mode!");
	130	return -EIO;
	131	}
	132
	133	sd->current_mode = mode;
	134
	135	return 0;
	136	}
	137
	138	/* this function is called at probe time */
	139	static int sd_config(struct gspca_dev *gspca_dev,
	140	const struct usb_device_id *id)
	141	{
	142	int ret;
	143	struct sd sd = (struct sd ) gspca_dev;
	144	struct cam *cam = &gspca_dev->cam;
	145
ab269d30 HG	146	/* Give the camera some time to settle, otherwise initalization will
	147	fail on hotplug, and yes it really needs a full second. */
	148	msleep(1000);
	149
21f1b932 HG	150	/* ping camera to be sure STV0680 is present */
	151	if (stv_sndctrl(gspca_dev, 0, 0x88, 0x5678, 0x02) != 0x02 \|\|
	152	gspca_dev->usb_buf[0] != 0x56 \|\| gspca_dev->usb_buf[1] != 0x78) {
	153	PDEBUG(D_ERR, "STV(e): camera ping failed!!");
	154	return stv0680_handle_error(gspca_dev, -ENODEV);
	155	}
	156
	157	/* get camera descriptor */
	158	if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0200, 0x09) != 0x09)
	159	return stv0680_handle_error(gspca_dev, -ENODEV);
	160
	161	if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0200, 0x22) != 0x22 \|\|
	162	gspca_dev->usb_buf[7] != 0xa0 \|\| gspca_dev->usb_buf[8] != 0x23) {
	163	PDEBUG(D_ERR, "Could not get descriptor 0200.");
	164	return stv0680_handle_error(gspca_dev, -ENODEV);
	165	}
	166	if (stv_sndctrl(gspca_dev, 0, 0x8a, 0, 0x02) != 0x02)
	167	return stv0680_handle_error(gspca_dev, -ENODEV);
	168	if (stv_sndctrl(gspca_dev, 0, 0x8b, 0, 0x24) != 0x24)
	169	return stv0680_handle_error(gspca_dev, -ENODEV);
	170	if (stv_sndctrl(gspca_dev, 0, 0x85, 0, 0x10) != 0x10)
	171	return stv0680_handle_error(gspca_dev, -ENODEV);
	172
	173	if (!(gspca_dev->usb_buf[7] & 0x09)) {
	174	PDEBUG(D_ERR, "Camera supports neither CIF nor QVGA mode");
	175	return -ENODEV;
	176	}
	177	if (gspca_dev->usb_buf[7] & 0x01)
	178	PDEBUG(D_PROBE, "Camera supports CIF mode");
	179	if (gspca_dev->usb_buf[7] & 0x02)
	180	PDEBUG(D_PROBE, "Camera supports VGA mode");
388a6d54 HG	181	if (gspca_dev->usb_buf[7] & 0x04)
388a6d54 HG	182	PDEBUG(D_PROBE, "Camera supports QCIF mode");
21f1b932 HG	183	if (gspca_dev->usb_buf[7] & 0x08)
	184	PDEBUG(D_PROBE, "Camera supports QVGA mode");
	185
	186	if (gspca_dev->usb_buf[7] & 0x01)
	187	sd->video_mode = 0x00; /* CIF */
	188	else
	189	sd->video_mode = 0x03; /* QVGA */
	190
	191	/* FW rev, ASIC rev, sensor ID */
	192	PDEBUG(D_PROBE, "Firmware rev is %i.%i",
	193	gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]);
	194	PDEBUG(D_PROBE, "ASIC rev is %i.%i",
	195	gspca_dev->usb_buf[2], gspca_dev->usb_buf[3]);
	196	PDEBUG(D_PROBE, "Sensor ID is %i",
	197	(gspca_dev->usb_buf[4]*16) + (gspca_dev->usb_buf[5]>>4));
	198
	199
	200	ret = stv0680_get_video_mode(gspca_dev);
	201	if (ret < 0)
	202	return ret;
	203	sd->current_mode = sd->orig_mode = ret;
	204
	205	ret = stv0680_set_video_mode(gspca_dev, sd->video_mode);
	206	if (ret < 0)
	207	return ret;
	208
	209	/* Get mode details */
	210	if (stv_sndctrl(gspca_dev, 0, 0x8f, 0, 0x10) != 0x10)
	211	return stv0680_handle_error(gspca_dev, -EIO);
	212
	213	cam->bulk = 1;
	214	cam->bulk_nurbs = 1; /* The cam cannot handle more */
	215	cam->bulk_size = (gspca_dev->usb_buf[0] << 24) \|
	216	(gspca_dev->usb_buf[1] << 16) \|
	217	(gspca_dev->usb_buf[2] << 8) \|
	218	(gspca_dev->usb_buf[3]);
	219	sd->mode.width = (gspca_dev->usb_buf[4] << 8) \|
	220	(gspca_dev->usb_buf[5]); /* 322, 356, 644 */
	221	sd->mode.height = (gspca_dev->usb_buf[6] << 8) \|
	222	(gspca_dev->usb_buf[7]); /* 242, 292, 484 */
	223	sd->mode.pixelformat = V4L2_PIX_FMT_STV0680;
	224	sd->mode.field = V4L2_FIELD_NONE;
	225	sd->mode.bytesperline = sd->mode.width;
	226	sd->mode.sizeimage = cam->bulk_size;
	227	sd->mode.colorspace = V4L2_COLORSPACE_SRGB;
	228
	229	/* origGain = gspca_dev->usb_buf[12]; */
	230
	231	cam->cam_mode = &sd->mode;
	232	cam->nmodes = 1;
	233
	234
	235	ret = stv0680_set_video_mode(gspca_dev, sd->orig_mode);
	236	if (ret < 0)
	237	return ret;
	238
	239	if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0100, 0x12) != 0x12 \|\|
	240	gspca_dev->usb_buf[8] != 0x53 \|\| gspca_dev->usb_buf[9] != 0x05) {
133a9fe9	241	pr_err("Could not get descriptor 0100\n");
21f1b932 HG	242	return stv0680_handle_error(gspca_dev, -EIO);
	243	}
	244
	245	return 0;
	246	}
	247
	248	/* this function is called at probe and resume time */
	249	static int sd_init(struct gspca_dev *gspca_dev)
	250	{
	251	return 0;
	252	}
	253
	254	/* -- start the camera -- */
	255	static int sd_start(struct gspca_dev *gspca_dev)
	256	{
	257	int ret;
	258	struct sd sd = (struct sd ) gspca_dev;
	259
	260	ret = stv0680_set_video_mode(gspca_dev, sd->video_mode);
	261	if (ret < 0)
	262	return ret;
	263
	264	if (stv_sndctrl(gspca_dev, 0, 0x85, 0, 0x10) != 0x10)
	265	return stv0680_handle_error(gspca_dev, -EIO);
	266
	267	/* Start stream at:
	268	0x0000 = CIF (352x288)
	269	0x0100 = VGA (640x480)
	270	0x0300 = QVGA (320x240) */
	271	if (stv_sndctrl(gspca_dev, 1, 0x09, sd->video_mode << 8, 0x0) != 0x0)
	272	return stv0680_handle_error(gspca_dev, -EIO);
	273
	274	return 0;
	275	}
	276
	277	static void sd_stopN(struct gspca_dev *gspca_dev)
	278	{
	279	/* This is a high priority command; it stops all lower order cmds */
	280	if (stv_sndctrl(gspca_dev, 1, 0x04, 0x0000, 0x0) != 0x0)
	281	stv0680_handle_error(gspca_dev, -EIO);
	282	}
	283
	284	static void sd_stop0(struct gspca_dev *gspca_dev)
	285	{
	286	struct sd sd = (struct sd ) gspca_dev;
	287
	288	if (!sd->gspca_dev.present)
	289	return;
	290
	291	stv0680_set_video_mode(gspca_dev, sd->orig_mode);
	292	}
	293
	294	static void sd_pkt_scan(struct gspca_dev *gspca_dev,
76dd272b	295	u8 *data,
21f1b932 HG	296	int len)
	297	{
	298	struct sd sd = (struct sd ) gspca_dev;
	299
	300	/* Every now and then the camera sends a 16 byte packet, no idea
	301	what it contains, but it is not image data, when this
	302	happens the frame received before this packet is corrupt,
	303	so discard it. */
	304	if (len != sd->mode.sizeimage) {
	305	gspca_dev->last_packet_type = DISCARD_PACKET;
	306	return;
	307	}
	308
	309	/* Finish the previous frame, we do this upon reception of the next
	310	packet, even though it is already complete so that the strange 16
	311	byte packets send after a corrupt frame can discard it. */
76dd272b	312	gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
21f1b932 HG	313
21f1b932 HG	314	/* Store the just received frame */
76dd272b	315	gspca_frame_add(gspca_dev, FIRST_PACKET, data, len);
21f1b932 HG	316	}
	317
	318	/* sub-driver description */
	319	static const struct sd_desc sd_desc = {
	320	.name = MODULE_NAME,
	321	.ctrls = sd_ctrls,
	322	.nctrls = ARRAY_SIZE(sd_ctrls),
	323	.config = sd_config,
	324	.init = sd_init,
	325	.start = sd_start,
	326	.stopN = sd_stopN,
	327	.stop0 = sd_stop0,
	328	.pkt_scan = sd_pkt_scan,
	329	};
	330
	331	/* -- module initialisation -- */
95c967c1	332	static const struct usb_device_id device_table[] = {
21f1b932 HG	333	{USB_DEVICE(0x0553, 0x0202)},
	334	{USB_DEVICE(0x041e, 0x4007)},
	335	{}
	336	};
	337	MODULE_DEVICE_TABLE(usb, device_table);
	338
	339	/* -- device connect -- */
	340	static int sd_probe(struct usb_interface *intf,
	341	const struct usb_device_id *id)
	342	{
	343	return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
	344	THIS_MODULE);
	345	}
	346
	347	static struct usb_driver sd_driver = {
	348	.name = MODULE_NAME,
	349	.id_table = device_table,
	350	.probe = sd_probe,
	351	.disconnect = gspca_disconnect,
	352	#ifdef CONFIG_PM
	353	.suspend = gspca_suspend,
	354	.resume = gspca_resume,
	355	#endif
	356	};
	357
ecb3b2b3	358	module_usb_driver(sd_driver);