[mirror_ubuntu-artful-kernel.git] / drivers / media / usb / 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.
 *
 */

#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;
};

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 */
	PERR("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) {
		PERR("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) {
		PERR("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) {
		PERR("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 initialization 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) {
		PERR("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) {
		PERR("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)) {
		PERR("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,
	.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,
	.reset_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	*
21f1b932 HG	24	*/
21f1b932 HG	25
133a9fe9 JP	26	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
133a9fe9 JP	27
21f1b932 HG	28	#define MODULE_NAME "stv0680"
	29
	30	#include "gspca.h"
	31
1fddcf0e	32	MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
21f1b932 HG	33	MODULE_DESCRIPTION("STV0680 USB Camera Driver");
	34	MODULE_LICENSE("GPL");
	35
	36	/* specific webcam descriptor */
	37	struct sd {
	38	struct gspca_dev gspca_dev; /* !! must be the first item */
	39	struct v4l2_pix_format mode;
	40	u8 orig_mode;
	41	u8 video_mode;
	42	u8 current_mode;
	43	};
	44
21f1b932 HG	45	static int stv_sndctrl(struct gspca_dev *gspca_dev, int set, u8 req, u16 val,
	46	int size)
	47	{
	48	int ret = -1;
	49	u8 req_type = 0;
388a6d54	50	unsigned int pipe = 0;
21f1b932 HG	51
	52	switch (set) {
	53	case 0: /* 0xc1 */
	54	req_type = USB_DIR_IN \| USB_TYPE_VENDOR \| USB_RECIP_ENDPOINT;
388a6d54	55	pipe = usb_rcvctrlpipe(gspca_dev->dev, 0);
21f1b932 HG	56	break;
	57	case 1: /* 0x41 */
	58	req_type = USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_ENDPOINT;
388a6d54	59	pipe = usb_sndctrlpipe(gspca_dev->dev, 0);
21f1b932 HG	60	break;
	61	case 2: /* 0x80 */
	62	req_type = USB_DIR_IN \| USB_RECIP_DEVICE;
388a6d54	63	pipe = usb_rcvctrlpipe(gspca_dev->dev, 0);
21f1b932 HG	64	break;
	65	case 3: /* 0x40 */
	66	req_type = USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE;
388a6d54	67	pipe = usb_sndctrlpipe(gspca_dev->dev, 0);
21f1b932 HG	68	break;
	69	}
	70
388a6d54	71	ret = usb_control_msg(gspca_dev->dev, pipe,
21f1b932 HG	72	req, req_type,
	73	val, 0, gspca_dev->usb_buf, size, 500);
	74
	75	if ((ret < 0) && (req != 0x0a))
133a9fe9	76	pr_err("usb_control_msg error %i, request = 0x%x, error = %i\n",
21f1b932 HG	77	set, req, ret);
	78
	79	return ret;
	80	}
	81
	82	static int stv0680_handle_error(struct gspca_dev *gspca_dev, int ret)
	83	{
	84	stv_sndctrl(gspca_dev, 0, 0x80, 0, 0x02); /* Get Last Error */
c93396e1	85	PERR("last error: %i, command = 0x%x",
21f1b932 HG	86	gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]);
	87	return ret;
	88	}
	89
	90	static int stv0680_get_video_mode(struct gspca_dev *gspca_dev)
	91	{
	92	/* Note not sure if this init of usb_buf is really necessary */
	93	memset(gspca_dev->usb_buf, 0, 8);
	94	gspca_dev->usb_buf[0] = 0x0f;
	95
	96	if (stv_sndctrl(gspca_dev, 0, 0x87, 0, 0x08) != 0x08) {
c93396e1	97	PERR("Get_Camera_Mode failed");
21f1b932 HG	98	return stv0680_handle_error(gspca_dev, -EIO);
	99	}
	100
	101	return gspca_dev->usb_buf[0]; /* 01 = VGA, 03 = QVGA, 00 = CIF */
	102	}
	103
	104	static int stv0680_set_video_mode(struct gspca_dev *gspca_dev, u8 mode)
	105	{
	106	struct sd sd = (struct sd ) gspca_dev;
	107
	108	if (sd->current_mode == mode)
	109	return 0;
	110
	111	memset(gspca_dev->usb_buf, 0, 8);
	112	gspca_dev->usb_buf[0] = mode;
	113
	114	if (stv_sndctrl(gspca_dev, 3, 0x07, 0x0100, 0x08) != 0x08) {
c93396e1	115	PERR("Set_Camera_Mode failed");
21f1b932 HG	116	return stv0680_handle_error(gspca_dev, -EIO);
	117	}
	118
	119	/* Verify we got what we've asked for */
	120	if (stv0680_get_video_mode(gspca_dev) != mode) {
c93396e1	121	PERR("Error setting camera video mode!");
21f1b932 HG	122	return -EIO;
	123	}
	124
	125	sd->current_mode = mode;
	126
	127	return 0;
	128	}
	129
	130	/* this function is called at probe time */
	131	static int sd_config(struct gspca_dev *gspca_dev,
	132	const struct usb_device_id *id)
	133	{
	134	int ret;
	135	struct sd sd = (struct sd ) gspca_dev;
	136	struct cam *cam = &gspca_dev->cam;
	137
f58c91ce	138	/* Give the camera some time to settle, otherwise initialization will
ab269d30 HG	139	fail on hotplug, and yes it really needs a full second. */
	140	msleep(1000);
	141
21f1b932 HG	142	/* ping camera to be sure STV0680 is present */
	143	if (stv_sndctrl(gspca_dev, 0, 0x88, 0x5678, 0x02) != 0x02 \|\|
	144	gspca_dev->usb_buf[0] != 0x56 \|\| gspca_dev->usb_buf[1] != 0x78) {
c93396e1	145	PERR("STV(e): camera ping failed!!");
21f1b932 HG	146	return stv0680_handle_error(gspca_dev, -ENODEV);
	147	}
	148
	149	/* get camera descriptor */
	150	if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0200, 0x09) != 0x09)
	151	return stv0680_handle_error(gspca_dev, -ENODEV);
	152
	153	if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0200, 0x22) != 0x22 \|\|
	154	gspca_dev->usb_buf[7] != 0xa0 \|\| gspca_dev->usb_buf[8] != 0x23) {
c93396e1	155	PERR("Could not get descriptor 0200.");
21f1b932 HG	156	return stv0680_handle_error(gspca_dev, -ENODEV);
	157	}
	158	if (stv_sndctrl(gspca_dev, 0, 0x8a, 0, 0x02) != 0x02)
	159	return stv0680_handle_error(gspca_dev, -ENODEV);
	160	if (stv_sndctrl(gspca_dev, 0, 0x8b, 0, 0x24) != 0x24)
	161	return stv0680_handle_error(gspca_dev, -ENODEV);
	162	if (stv_sndctrl(gspca_dev, 0, 0x85, 0, 0x10) != 0x10)
	163	return stv0680_handle_error(gspca_dev, -ENODEV);
	164
	165	if (!(gspca_dev->usb_buf[7] & 0x09)) {
c93396e1	166	PERR("Camera supports neither CIF nor QVGA mode");
21f1b932 HG	167	return -ENODEV;
	168	}
	169	if (gspca_dev->usb_buf[7] & 0x01)
	170	PDEBUG(D_PROBE, "Camera supports CIF mode");
	171	if (gspca_dev->usb_buf[7] & 0x02)
	172	PDEBUG(D_PROBE, "Camera supports VGA mode");
388a6d54 HG	173	if (gspca_dev->usb_buf[7] & 0x04)
388a6d54 HG	174	PDEBUG(D_PROBE, "Camera supports QCIF mode");
21f1b932 HG	175	if (gspca_dev->usb_buf[7] & 0x08)
	176	PDEBUG(D_PROBE, "Camera supports QVGA mode");
	177
	178	if (gspca_dev->usb_buf[7] & 0x01)
	179	sd->video_mode = 0x00; /* CIF */
	180	else
	181	sd->video_mode = 0x03; /* QVGA */
	182
	183	/* FW rev, ASIC rev, sensor ID */
	184	PDEBUG(D_PROBE, "Firmware rev is %i.%i",
	185	gspca_dev->usb_buf[0], gspca_dev->usb_buf[1]);
	186	PDEBUG(D_PROBE, "ASIC rev is %i.%i",
	187	gspca_dev->usb_buf[2], gspca_dev->usb_buf[3]);
	188	PDEBUG(D_PROBE, "Sensor ID is %i",
	189	(gspca_dev->usb_buf[4]*16) + (gspca_dev->usb_buf[5]>>4));
	190
	191
	192	ret = stv0680_get_video_mode(gspca_dev);
	193	if (ret < 0)
	194	return ret;
	195	sd->current_mode = sd->orig_mode = ret;
	196
	197	ret = stv0680_set_video_mode(gspca_dev, sd->video_mode);
	198	if (ret < 0)
	199	return ret;
	200
	201	/* Get mode details */
	202	if (stv_sndctrl(gspca_dev, 0, 0x8f, 0, 0x10) != 0x10)
	203	return stv0680_handle_error(gspca_dev, -EIO);
	204
	205	cam->bulk = 1;
	206	cam->bulk_nurbs = 1; /* The cam cannot handle more */
	207	cam->bulk_size = (gspca_dev->usb_buf[0] << 24) \|
	208	(gspca_dev->usb_buf[1] << 16) \|
	209	(gspca_dev->usb_buf[2] << 8) \|
	210	(gspca_dev->usb_buf[3]);
	211	sd->mode.width = (gspca_dev->usb_buf[4] << 8) \|
	212	(gspca_dev->usb_buf[5]); /* 322, 356, 644 */
	213	sd->mode.height = (gspca_dev->usb_buf[6] << 8) \|
	214	(gspca_dev->usb_buf[7]); /* 242, 292, 484 */
	215	sd->mode.pixelformat = V4L2_PIX_FMT_STV0680;
	216	sd->mode.field = V4L2_FIELD_NONE;
	217	sd->mode.bytesperline = sd->mode.width;
	218	sd->mode.sizeimage = cam->bulk_size;
	219	sd->mode.colorspace = V4L2_COLORSPACE_SRGB;
	220
	221	/* origGain = gspca_dev->usb_buf[12]; */
	222
	223	cam->cam_mode = &sd->mode;
	224	cam->nmodes = 1;
	225
	226
	227	ret = stv0680_set_video_mode(gspca_dev, sd->orig_mode);
	228	if (ret < 0)
	229	return ret;
	230
	231	if (stv_sndctrl(gspca_dev, 2, 0x06, 0x0100, 0x12) != 0x12 \|\|
	232	gspca_dev->usb_buf[8] != 0x53 \|\| gspca_dev->usb_buf[9] != 0x05) {
133a9fe9	233	pr_err("Could not get descriptor 0100\n");
21f1b932 HG	234	return stv0680_handle_error(gspca_dev, -EIO);
	235	}
	236
	237	return 0;
	238	}
	239
	240	/* this function is called at probe and resume time */
	241	static int sd_init(struct gspca_dev *gspca_dev)
	242	{
	243	return 0;
	244	}
	245
	246	/* -- start the camera -- */
	247	static int sd_start(struct gspca_dev *gspca_dev)
	248	{
	249	int ret;
	250	struct sd sd = (struct sd ) gspca_dev;
	251
	252	ret = stv0680_set_video_mode(gspca_dev, sd->video_mode);
	253	if (ret < 0)
	254	return ret;
	255
	256	if (stv_sndctrl(gspca_dev, 0, 0x85, 0, 0x10) != 0x10)
	257	return stv0680_handle_error(gspca_dev, -EIO);
	258
	259	/* Start stream at:
	260	0x0000 = CIF (352x288)
	261	0x0100 = VGA (640x480)
	262	0x0300 = QVGA (320x240) */
	263	if (stv_sndctrl(gspca_dev, 1, 0x09, sd->video_mode << 8, 0x0) != 0x0)
	264	return stv0680_handle_error(gspca_dev, -EIO);
	265
	266	return 0;
	267	}
	268
	269	static void sd_stopN(struct gspca_dev *gspca_dev)
	270	{
	271	/* This is a high priority command; it stops all lower order cmds */
	272	if (stv_sndctrl(gspca_dev, 1, 0x04, 0x0000, 0x0) != 0x0)
	273	stv0680_handle_error(gspca_dev, -EIO);
	274	}
	275
	276	static void sd_stop0(struct gspca_dev *gspca_dev)
	277	{
	278	struct sd sd = (struct sd ) gspca_dev;
	279
	280	if (!sd->gspca_dev.present)
	281	return;
	282
	283	stv0680_set_video_mode(gspca_dev, sd->orig_mode);
	284	}
	285
	286	static void sd_pkt_scan(struct gspca_dev *gspca_dev,
76dd272b	287	u8 *data,
21f1b932 HG	288	int len)
	289	{
	290	struct sd sd = (struct sd ) gspca_dev;
	291
	292	/* Every now and then the camera sends a 16 byte packet, no idea
	293	what it contains, but it is not image data, when this
	294	happens the frame received before this packet is corrupt,
	295	so discard it. */
	296	if (len != sd->mode.sizeimage) {
	297	gspca_dev->last_packet_type = DISCARD_PACKET;
	298	return;
	299	}
	300
	301	/* Finish the previous frame, we do this upon reception of the next
	302	packet, even though it is already complete so that the strange 16
	303	byte packets send after a corrupt frame can discard it. */
76dd272b	304	gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
21f1b932 HG	305
21f1b932 HG	306	/* Store the just received frame */
76dd272b	307	gspca_frame_add(gspca_dev, FIRST_PACKET, data, len);
21f1b932 HG	308	}
	309
	310	/* sub-driver description */
	311	static const struct sd_desc sd_desc = {
	312	.name = MODULE_NAME,
21f1b932 HG	313	.config = sd_config,
	314	.init = sd_init,
	315	.start = sd_start,
	316	.stopN = sd_stopN,
	317	.stop0 = sd_stop0,
	318	.pkt_scan = sd_pkt_scan,
	319	};
	320
	321	/* -- module initialisation -- */
95c967c1	322	static const struct usb_device_id device_table[] = {
21f1b932 HG	323	{USB_DEVICE(0x0553, 0x0202)},
	324	{USB_DEVICE(0x041e, 0x4007)},
	325	{}
	326	};
	327	MODULE_DEVICE_TABLE(usb, device_table);
	328
	329	/* -- device connect -- */
	330	static int sd_probe(struct usb_interface *intf,
	331	const struct usb_device_id *id)
	332	{
	333	return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
	334	THIS_MODULE);
	335	}
	336
	337	static struct usb_driver sd_driver = {
	338	.name = MODULE_NAME,
	339	.id_table = device_table,
	340	.probe = sd_probe,
	341	.disconnect = gspca_disconnect,
	342	#ifdef CONFIG_PM
	343	.suspend = gspca_suspend,
	344	.resume = gspca_resume,
8bb58964	345	.reset_resume = gspca_resume,
21f1b932 HG	346	#endif
	347	};
	348
ecb3b2b3	349	module_usb_driver(sd_driver);