[linux-2.6-block.git] / drivers / media / video / gspca / stv06xx / stv06xx.c

/*
 * Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher
 *		      Mark Cave-Ayland, Carlo E Prelz, Dick Streefland
 * Copyright (c) 2002, 2003 Tuukka Toivonen
 * Copyright (c) 2008 Erik Andrén
 *
 * 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
 *
 * P/N 861037:      Sensor HDCS1000        ASIC STV0600
 * P/N 861050-0010: Sensor HDCS1000        ASIC STV0600
 * P/N 861050-0020: Sensor Photobit PB100  ASIC STV0600-1 - QuickCam Express
 * P/N 861055:      Sensor ST VV6410       ASIC STV0610   - LEGO cam
 * P/N 861075-0040: Sensor HDCS1000        ASIC
 * P/N 961179-0700: Sensor ST VV6410       ASIC STV0602   - Dexxa WebCam USB
 * P/N 861040-0000: Sensor ST VV6410       ASIC STV0610   - QuickCam Web
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/input.h>
#include "stv06xx_sensor.h"

MODULE_AUTHOR("Erik Andrén");
MODULE_DESCRIPTION("STV06XX USB Camera Driver");
MODULE_LICENSE("GPL");

static bool dump_bridge;
static bool dump_sensor;

int stv06xx_write_bridge(struct sd *sd, u16 address, u16 i2c_data)
{
	int err;
	struct usb_device *udev = sd->gspca_dev.dev;
	__u8 *buf = sd->gspca_dev.usb_buf;
	u8 len = (i2c_data > 0xff) ? 2 : 1;

	buf[0] = i2c_data & 0xff;
	buf[1] = (i2c_data >> 8) & 0xff;

	err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
			      0x04, 0x40, address, 0, buf, len,
			      STV06XX_URB_MSG_TIMEOUT);

	PDEBUG(D_CONF, "Written 0x%x to address 0x%x, status: %d",
	       i2c_data, address, err);

	return (err < 0) ? err : 0;
}

int stv06xx_read_bridge(struct sd *sd, u16 address, u8 *i2c_data)
{
	int err;
	struct usb_device *udev = sd->gspca_dev.dev;
	__u8 *buf = sd->gspca_dev.usb_buf;

	err = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
			      0x04, 0xc0, address, 0, buf, 1,
			      STV06XX_URB_MSG_TIMEOUT);

	*i2c_data = buf[0];

	PDEBUG(D_CONF, "Reading 0x%x from address 0x%x, status %d",
	       *i2c_data, address, err);

	return (err < 0) ? err : 0;
}

/* Wraps the normal write sensor bytes / words functions for writing a
   single value */
int stv06xx_write_sensor(struct sd *sd, u8 address, u16 value)
{
	if (sd->sensor->i2c_len == 2) {
		u16 data[2] = { address, value };
		return stv06xx_write_sensor_words(sd, data, 1);
	} else {
		u8 data[2] = { address, value };
		return stv06xx_write_sensor_bytes(sd, data, 1);
	}
}

static int stv06xx_write_sensor_finish(struct sd *sd)
{
	int err = 0;

	if (sd->bridge == BRIDGE_STV610) {
		struct usb_device *udev = sd->gspca_dev.dev;
		__u8 *buf = sd->gspca_dev.usb_buf;

		buf[0] = 0;
		err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
				      0x04, 0x40, 0x1704, 0, buf, 1,
				      STV06XX_URB_MSG_TIMEOUT);
	}

	return (err < 0) ? err : 0;
}

int stv06xx_write_sensor_bytes(struct sd *sd, const u8 *data, u8 len)
{
	int err, i, j;
	struct usb_device *udev = sd->gspca_dev.dev;
	__u8 *buf = sd->gspca_dev.usb_buf;

	PDEBUG(D_CONF, "I2C: Command buffer contains %d entries", len);
	for (i = 0; i < len;) {
		/* Build the command buffer */
		memset(buf, 0, I2C_BUFFER_LENGTH);
		for (j = 0; j < I2C_MAX_BYTES && i < len; j++, i++) {
			buf[j] = data[2*i];
			buf[0x10 + j] = data[2*i+1];
			PDEBUG(D_CONF, "I2C: Writing 0x%02x to reg 0x%02x",
			data[2*i+1], data[2*i]);
		}
		buf[0x20] = sd->sensor->i2c_addr;
		buf[0x21] = j - 1; /* Number of commands to send - 1 */
		buf[0x22] = I2C_WRITE_CMD;
		err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
				      0x04, 0x40, 0x0400, 0, buf,
				      I2C_BUFFER_LENGTH,
				      STV06XX_URB_MSG_TIMEOUT);
		if (err < 0)
			return err;
	}
	return stv06xx_write_sensor_finish(sd);
}

int stv06xx_write_sensor_words(struct sd *sd, const u16 *data, u8 len)
{
	int err, i, j;
	struct usb_device *udev = sd->gspca_dev.dev;
	__u8 *buf = sd->gspca_dev.usb_buf;

	PDEBUG(D_CONF, "I2C: Command buffer contains %d entries", len);

	for (i = 0; i < len;) {
		/* Build the command buffer */
		memset(buf, 0, I2C_BUFFER_LENGTH);
		for (j = 0; j < I2C_MAX_WORDS && i < len; j++, i++) {
			buf[j] = data[2*i];
			buf[0x10 + j * 2] = data[2*i+1];
			buf[0x10 + j * 2 + 1] = data[2*i+1] >> 8;
			PDEBUG(D_CONF, "I2C: Writing 0x%04x to reg 0x%02x",
				data[2*i+1], data[2*i]);
		}
		buf[0x20] = sd->sensor->i2c_addr;
		buf[0x21] = j - 1; /* Number of commands to send - 1 */
		buf[0x22] = I2C_WRITE_CMD;
		err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
				0x04, 0x40, 0x0400, 0, buf,
				I2C_BUFFER_LENGTH,
				STV06XX_URB_MSG_TIMEOUT);
		if (err < 0)
			return err;
	}
	return stv06xx_write_sensor_finish(sd);
}

int stv06xx_read_sensor(struct sd *sd, const u8 address, u16 *value)
{
	int err;
	struct usb_device *udev = sd->gspca_dev.dev;
	__u8 *buf = sd->gspca_dev.usb_buf;

	err = stv06xx_write_bridge(sd, STV_I2C_FLUSH, sd->sensor->i2c_flush);
	if (err < 0)
		return err;

	/* Clear mem */
	memset(buf, 0, I2C_BUFFER_LENGTH);

	buf[0] = address;
	buf[0x20] = sd->sensor->i2c_addr;
	buf[0x21] = 0;

	/* Read I2C register */
	buf[0x22] = I2C_READ_CMD;

	err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
			      0x04, 0x40, 0x1400, 0, buf, I2C_BUFFER_LENGTH,
			      STV06XX_URB_MSG_TIMEOUT);
	if (err < 0) {
		pr_err("I2C: Read error writing address: %d\n", err);
		return err;
	}

	err = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
			      0x04, 0xc0, 0x1410, 0, buf, sd->sensor->i2c_len,
			      STV06XX_URB_MSG_TIMEOUT);
	if (sd->sensor->i2c_len == 2)
		*value = buf[0] | (buf[1] << 8);
	else
		*value = buf[0];

	PDEBUG(D_CONF, "I2C: Read 0x%x from address 0x%x, status: %d",
	       *value, address, err);

	return (err < 0) ? err : 0;
}

/* Dumps all bridge registers */
static void stv06xx_dump_bridge(struct sd *sd)
{
	int i;
	u8 data, buf;

	pr_info("Dumping all stv06xx bridge registers\n");
	for (i = 0x1400; i < 0x160f; i++) {
		stv06xx_read_bridge(sd, i, &data);

		pr_info("Read 0x%x from address 0x%x\n", data, i);
	}

	pr_info("Testing stv06xx bridge registers for writability\n");
	for (i = 0x1400; i < 0x160f; i++) {
		stv06xx_read_bridge(sd, i, &data);
		buf = data;

		stv06xx_write_bridge(sd, i, 0xff);
		stv06xx_read_bridge(sd, i, &data);
		if (data == 0xff)
			pr_info("Register 0x%x is read/write\n", i);
		else if (data != buf)
			pr_info("Register 0x%x is read/write, but only partially\n",
				i);
		else
			pr_info("Register 0x%x is read-only\n", i);

		stv06xx_write_bridge(sd, i, buf);
	}
}

/* this function is called at probe and resume time */
static int stv06xx_init(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	int err;

	PDEBUG(D_PROBE, "Initializing camera");

	/* Let the usb init settle for a bit
	   before performing the initialization */
	msleep(250);

	err = sd->sensor->init(sd);

	if (dump_sensor && sd->sensor->dump)
		sd->sensor->dump(sd);

	return (err < 0) ? err : 0;
}

/* this function is called at probe time */
static int stv06xx_init_controls(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;

	PDEBUG(D_PROBE, "Initializing controls");

	gspca_dev->vdev.ctrl_handler = &gspca_dev->ctrl_handler;
	return sd->sensor->init_controls(sd);
}

/* Start the camera */
static int stv06xx_start(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	struct usb_host_interface *alt;
	struct usb_interface *intf;
	int err, packet_size;

	intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
	alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
	if (!alt) {
		PDEBUG(D_ERR, "Couldn't get altsetting");
		return -EIO;
	}

	packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
	err = stv06xx_write_bridge(sd, STV_ISO_SIZE_L, packet_size);
	if (err < 0)
		return err;

	/* Prepare the sensor for start */
	err = sd->sensor->start(sd);
	if (err < 0)
		goto out;

	/* Start isochronous streaming */
	err = stv06xx_write_bridge(sd, STV_ISO_ENABLE, 1);

out:
	if (err < 0)
		PDEBUG(D_STREAM, "Starting stream failed");
	else
		PDEBUG(D_STREAM, "Started streaming");

	return (err < 0) ? err : 0;
}

static int stv06xx_isoc_init(struct gspca_dev *gspca_dev)
{
	struct usb_host_interface *alt;
	struct sd *sd = (struct sd *) gspca_dev;

	/* Start isoc bandwidth "negotiation" at max isoc bandwidth */
	alt = &gspca_dev->dev->actconfig->intf_cache[0]->altsetting[1];
	alt->endpoint[0].desc.wMaxPacketSize =
		cpu_to_le16(sd->sensor->max_packet_size[gspca_dev->curr_mode]);

	return 0;
}

static int stv06xx_isoc_nego(struct gspca_dev *gspca_dev)
{
	int ret, packet_size, min_packet_size;
	struct usb_host_interface *alt;
	struct sd *sd = (struct sd *) gspca_dev;

	alt = &gspca_dev->dev->actconfig->intf_cache[0]->altsetting[1];
	packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
	min_packet_size = sd->sensor->min_packet_size[gspca_dev->curr_mode];
	if (packet_size <= min_packet_size)
		return -EIO;

	packet_size -= 100;
	if (packet_size < min_packet_size)
		packet_size = min_packet_size;
	alt->endpoint[0].desc.wMaxPacketSize = cpu_to_le16(packet_size);

	ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
	if (ret < 0)
		PDEBUG(D_ERR|D_STREAM, "set alt 1 err %d", ret);

	return ret;
}

static void stv06xx_stopN(struct gspca_dev *gspca_dev)
{
	int err;
	struct sd *sd = (struct sd *) gspca_dev;

	/* stop ISO-streaming */
	err = stv06xx_write_bridge(sd, STV_ISO_ENABLE, 0);
	if (err < 0)
		goto out;

	err = sd->sensor->stop(sd);

out:
	if (err < 0)
		PDEBUG(D_STREAM, "Failed to stop stream");
	else
		PDEBUG(D_STREAM, "Stopped streaming");
}

/*
 * Analyse an USB packet of the data stream and store it appropriately.
 * Each packet contains an integral number of chunks. Each chunk has
 * 2-bytes identification, followed by 2-bytes that describe the chunk
 * length. Known/guessed chunk identifications are:
 * 8001/8005/C001/C005 - Begin new frame
 * 8002/8006/C002/C006 - End frame
 * 0200/4200           - Contains actual image data, bayer or compressed
 * 0005                - 11 bytes of unknown data
 * 0100                - 2 bytes of unknown data
 * The 0005 and 0100 chunks seem to appear only in compressed stream.
 */
static void stv06xx_pkt_scan(struct gspca_dev *gspca_dev,
			u8 *data,			/* isoc packet */
			int len)			/* iso packet length */
{
	struct sd *sd = (struct sd *) gspca_dev;

	PDEBUG(D_PACK, "Packet of length %d arrived", len);

	/* A packet may contain several frames
	   loop until the whole packet is reached */
	while (len) {
		int id, chunk_len;

		if (len < 4) {
			PDEBUG(D_PACK, "Packet is smaller than 4 bytes");
			return;
		}

		/* Capture the id */
		id = (data[0] << 8) | data[1];

		/* Capture the chunk length */
		chunk_len = (data[2] << 8) | data[3];
		PDEBUG(D_PACK, "Chunk id: %x, length: %d", id, chunk_len);

		data += 4;
		len -= 4;

		if (len < chunk_len) {
			PDEBUG(D_ERR, "URB packet length is smaller"
				" than the specified chunk length");
			gspca_dev->last_packet_type = DISCARD_PACKET;
			return;
		}

		/* First byte seem to be 02=data 2nd byte is unknown??? */
		if (sd->bridge == BRIDGE_ST6422 && (id & 0xff00) == 0x0200)
			goto frame_data;

		switch (id) {
		case 0x0200:
		case 0x4200:
frame_data:
			PDEBUG(D_PACK, "Frame data packet detected");

			if (sd->to_skip) {
				int skip = (sd->to_skip < chunk_len) ?
					    sd->to_skip : chunk_len;
				data += skip;
				len -= skip;
				chunk_len -= skip;
				sd->to_skip -= skip;
			}

			gspca_frame_add(gspca_dev, INTER_PACKET,
					data, chunk_len);
			break;

		case 0x8001:
		case 0x8005:
		case 0xc001:
		case 0xc005:
			PDEBUG(D_PACK, "Starting new frame");

			/* Create a new frame, chunk length should be zero */
			gspca_frame_add(gspca_dev, FIRST_PACKET,
					NULL, 0);

			if (sd->bridge == BRIDGE_ST6422)
				sd->to_skip = gspca_dev->width * 4;

			if (chunk_len)
				PDEBUG(D_ERR, "Chunk length is "
					      "non-zero on a SOF");
			break;

		case 0x8002:
		case 0x8006:
		case 0xc002:
			PDEBUG(D_PACK, "End of frame detected");

			/* Complete the last frame (if any) */
			gspca_frame_add(gspca_dev, LAST_PACKET,
					NULL, 0);

			if (chunk_len)
				PDEBUG(D_ERR, "Chunk length is "
					      "non-zero on a EOF");
			break;

		case 0x0005:
			PDEBUG(D_PACK, "Chunk 0x005 detected");
			/* Unknown chunk with 11 bytes of data,
			   occurs just before end of each frame
			   in compressed mode */
			break;

		case 0x0100:
			PDEBUG(D_PACK, "Chunk 0x0100 detected");
			/* Unknown chunk with 2 bytes of data,
			   occurs 2-3 times per USB interrupt */
			break;
		case 0x42ff:
			PDEBUG(D_PACK, "Chunk 0x42ff detected");
			/* Special chunk seen sometimes on the ST6422 */
			break;
		default:
			PDEBUG(D_PACK, "Unknown chunk 0x%04x detected", id);
			/* Unknown chunk */
		}
		data    += chunk_len;
		len     -= chunk_len;
	}
}

#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
static int sd_int_pkt_scan(struct gspca_dev *gspca_dev,
			u8 *data,		/* interrupt packet data */
			int len)		/* interrupt packet length */
{
	int ret = -EINVAL;

	if (len == 1 && data[0] == 0x80) {
		input_report_key(gspca_dev->input_dev, KEY_CAMERA, 1);
		input_sync(gspca_dev->input_dev);
		ret = 0;
	}

	if (len == 1 && data[0] == 0x88) {
		input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0);
		input_sync(gspca_dev->input_dev);
		ret = 0;
	}

	return ret;
}
#endif

static int stv06xx_config(struct gspca_dev *gspca_dev,
			  const struct usb_device_id *id);

/* sub-driver description */
static const struct sd_desc sd_desc = {
	.name = MODULE_NAME,
	.config = stv06xx_config,
	.init = stv06xx_init,
	.init_controls = stv06xx_init_controls,
	.start = stv06xx_start,
	.stopN = stv06xx_stopN,
	.pkt_scan = stv06xx_pkt_scan,
	.isoc_init = stv06xx_isoc_init,
	.isoc_nego = stv06xx_isoc_nego,
#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
	.int_pkt_scan = sd_int_pkt_scan,
#endif
};

/* This function is called at probe time */
static int stv06xx_config(struct gspca_dev *gspca_dev,
			  const struct usb_device_id *id)
{
	struct sd *sd = (struct sd *) gspca_dev;

	PDEBUG(D_PROBE, "Configuring camera");

	sd->bridge = id->driver_info;
	gspca_dev->sd_desc = &sd_desc;

	if (dump_bridge)
		stv06xx_dump_bridge(sd);

	sd->sensor = &stv06xx_sensor_st6422;
	if (!sd->sensor->probe(sd))
		return 0;

	sd->sensor = &stv06xx_sensor_vv6410;
	if (!sd->sensor->probe(sd))
		return 0;

	sd->sensor = &stv06xx_sensor_hdcs1x00;
	if (!sd->sensor->probe(sd))
		return 0;

	sd->sensor = &stv06xx_sensor_hdcs1020;
	if (!sd->sensor->probe(sd))
		return 0;

	sd->sensor = &stv06xx_sensor_pb0100;
	if (!sd->sensor->probe(sd))
		return 0;

	sd->sensor = NULL;
	return -ENODEV;
}


/* -- module initialisation -- */
static const struct usb_device_id device_table[] = {
	/* QuickCam Express */
	{USB_DEVICE(0x046d, 0x0840), .driver_info = BRIDGE_STV600 },
	/* LEGO cam / QuickCam Web */
	{USB_DEVICE(0x046d, 0x0850), .driver_info = BRIDGE_STV610 },
	/* Dexxa WebCam USB */
	{USB_DEVICE(0x046d, 0x0870), .driver_info = BRIDGE_STV602 },
	/* QuickCam Messenger */
	{USB_DEVICE(0x046D, 0x08F0), .driver_info = BRIDGE_ST6422 },
	/* QuickCam Communicate */
	{USB_DEVICE(0x046D, 0x08F5), .driver_info = BRIDGE_ST6422 },
	/* QuickCam Messenger (new) */
	{USB_DEVICE(0x046D, 0x08F6), .driver_info = BRIDGE_ST6422 },
	{}
};
MODULE_DEVICE_TABLE(usb, device_table);

/* -- device connect -- */
static int sd_probe(struct usb_interface *intf,
			const struct usb_device_id *id)
{
	PDEBUG(D_PROBE, "Probing for a stv06xx device");
	return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
			       THIS_MODULE);
}

static void sd_disconnect(struct usb_interface *intf)
{
	struct gspca_dev *gspca_dev = usb_get_intfdata(intf);
	struct sd *sd = (struct sd *) gspca_dev;
	void *priv = sd->sensor_priv;
	PDEBUG(D_PROBE, "Disconnecting the stv06xx device");

	sd->sensor = NULL;
	gspca_disconnect(intf);
	kfree(priv);
}

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

module_usb_driver(sd_driver);

module_param(dump_bridge, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(dump_bridge, "Dumps all usb bridge registers at startup");

module_param(dump_sensor, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(dump_sensor, "Dumps all sensor registers at startup");
Commit	Line	Data
4c98834a EA	1	/*
	2	* Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher
	3	* Mark Cave-Ayland, Carlo E Prelz, Dick Streefland
	4	* Copyright (c) 2002, 2003 Tuukka Toivonen
	5	* Copyright (c) 2008 Erik Andrén
	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.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	20	*
	21	* P/N 861037: Sensor HDCS1000 ASIC STV0600
	22	* P/N 861050-0010: Sensor HDCS1000 ASIC STV0600
	23	* P/N 861050-0020: Sensor Photobit PB100 ASIC STV0600-1 - QuickCam Express
	24	* P/N 861055: Sensor ST VV6410 ASIC STV0610 - LEGO cam
	25	* P/N 861075-0040: Sensor HDCS1000 ASIC
	26	* P/N 961179-0700: Sensor ST VV6410 ASIC STV0602 - Dexxa WebCam USB
	27	* P/N 861040-0000: Sensor ST VV6410 ASIC STV0610 - QuickCam Web
	28	*/
	29
133a9fe9 JP	30	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
133a9fe9 JP	31
0158e98f	32	#include <linux/input.h>
4c98834a EA	33	#include "stv06xx_sensor.h"
	34
	35	MODULE_AUTHOR("Erik Andrén");
	36	MODULE_DESCRIPTION("STV06XX USB Camera Driver");
	37	MODULE_LICENSE("GPL");
	38
90ab5ee9 RR	39	static bool dump_bridge;
90ab5ee9 RR	40	static bool dump_sensor;
4c98834a EA	41
	42	int stv06xx_write_bridge(struct sd *sd, u16 address, u16 i2c_data)
	43	{
	44	int err;
	45	struct usb_device *udev = sd->gspca_dev.dev;
	46	__u8 *buf = sd->gspca_dev.usb_buf;
	47	u8 len = (i2c_data > 0xff) ? 2 : 1;
	48
	49	buf[0] = i2c_data & 0xff;
	50	buf[1] = (i2c_data >> 8) & 0xff;
	51
	52	err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
	53	0x04, 0x40, address, 0, buf, len,
	54	STV06XX_URB_MSG_TIMEOUT);
	55
4c98834a EA	56	PDEBUG(D_CONF, "Written 0x%x to address 0x%x, status: %d",
	57	i2c_data, address, err);
	58
	59	return (err < 0) ? err : 0;
	60	}
	61
	62	int stv06xx_read_bridge(struct sd sd, u16 address, u8 i2c_data)
	63	{
	64	int err;
	65	struct usb_device *udev = sd->gspca_dev.dev;
	66	__u8 *buf = sd->gspca_dev.usb_buf;
	67
	68	err = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
	69	0x04, 0xc0, address, 0, buf, 1,
	70	STV06XX_URB_MSG_TIMEOUT);
	71
	72	*i2c_data = buf[0];
	73
be3bdfb6	74	PDEBUG(D_CONF, "Reading 0x%x from address 0x%x, status %d",
4c98834a EA	75	*i2c_data, address, err);
	76
	77	return (err < 0) ? err : 0;
	78	}
	79
	80	/* Wraps the normal write sensor bytes / words functions for writing a
	81	single value */
	82	int stv06xx_write_sensor(struct sd *sd, u8 address, u16 value)
	83	{
	84	if (sd->sensor->i2c_len == 2) {
	85	u16 data[2] = { address, value };
	86	return stv06xx_write_sensor_words(sd, data, 1);
	87	} else {
	88	u8 data[2] = { address, value };
	89	return stv06xx_write_sensor_bytes(sd, data, 1);
	90	}
	91	}
	92
	93	static int stv06xx_write_sensor_finish(struct sd *sd)
	94	{
	95	int err = 0;
	96
8668d504	97	if (sd->bridge == BRIDGE_STV610) {
4c98834a EA	98	struct usb_device *udev = sd->gspca_dev.dev;
	99	__u8 *buf = sd->gspca_dev.usb_buf;
	100
4c98834a EA	101	buf[0] = 0;
	102	err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
	103	0x04, 0x40, 0x1704, 0, buf, 1,
	104	STV06XX_URB_MSG_TIMEOUT);
	105	}
	106
	107	return (err < 0) ? err : 0;
	108	}
	109
	110	int stv06xx_write_sensor_bytes(struct sd sd, const u8 data, u8 len)
	111	{
	112	int err, i, j;
	113	struct usb_device *udev = sd->gspca_dev.dev;
	114	__u8 *buf = sd->gspca_dev.usb_buf;
	115
be3bdfb6	116	PDEBUG(D_CONF, "I2C: Command buffer contains %d entries", len);
4c98834a EA	117	for (i = 0; i < len;) {
	118	/* Build the command buffer */
	119	memset(buf, 0, I2C_BUFFER_LENGTH);
	120	for (j = 0; j < I2C_MAX_BYTES && i < len; j++, i++) {
	121	buf[j] = data[2*i];
	122	buf[0x10 + j] = data[2*i+1];
be3bdfb6	123	PDEBUG(D_CONF, "I2C: Writing 0x%02x to reg 0x%02x",
4c98834a EA	124	data[2i+1], data[2i]);
	125	}
	126	buf[0x20] = sd->sensor->i2c_addr;
	127	buf[0x21] = j - 1; /* Number of commands to send - 1 */
	128	buf[0x22] = I2C_WRITE_CMD;
	129	err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
	130	0x04, 0x40, 0x0400, 0, buf,
	131	I2C_BUFFER_LENGTH,
	132	STV06XX_URB_MSG_TIMEOUT);
a8ca20b2 EA	133	if (err < 0)
a8ca20b2 EA	134	return err;
272ece5e MCC	135	}
272ece5e MCC	136	return stv06xx_write_sensor_finish(sd);
4c98834a EA	137	}
	138
	139	int stv06xx_write_sensor_words(struct sd sd, const u16 data, u8 len)
	140	{
	141	int err, i, j;
	142	struct usb_device *udev = sd->gspca_dev.dev;
	143	__u8 *buf = sd->gspca_dev.usb_buf;
	144
be3bdfb6	145	PDEBUG(D_CONF, "I2C: Command buffer contains %d entries", len);
4c98834a EA	146
	147	for (i = 0; i < len;) {
	148	/* Build the command buffer */
	149	memset(buf, 0, I2C_BUFFER_LENGTH);
	150	for (j = 0; j < I2C_MAX_WORDS && i < len; j++, i++) {
	151	buf[j] = data[2*i];
	152	buf[0x10 + j * 2] = data[2*i+1];
	153	buf[0x10 + j * 2 + 1] = data[2*i+1] >> 8;
be3bdfb6	154	PDEBUG(D_CONF, "I2C: Writing 0x%04x to reg 0x%02x",
4c98834a EA	155	data[2i+1], data[2i]);
	156	}
	157	buf[0x20] = sd->sensor->i2c_addr;
	158	buf[0x21] = j - 1; /* Number of commands to send - 1 */
	159	buf[0x22] = I2C_WRITE_CMD;
	160	err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
	161	0x04, 0x40, 0x0400, 0, buf,
	162	I2C_BUFFER_LENGTH,
	163	STV06XX_URB_MSG_TIMEOUT);
	164	if (err < 0)
	165	return err;
	166	}
	167	return stv06xx_write_sensor_finish(sd);
	168	}
	169
	170	int stv06xx_read_sensor(struct sd sd, const u8 address, u16 value)
	171	{
	172	int err;
	173	struct usb_device *udev = sd->gspca_dev.dev;
	174	__u8 *buf = sd->gspca_dev.usb_buf;
	175
	176	err = stv06xx_write_bridge(sd, STV_I2C_FLUSH, sd->sensor->i2c_flush);
	177	if (err < 0)
	178	return err;
	179
	180	/* Clear mem */
	181	memset(buf, 0, I2C_BUFFER_LENGTH);
	182
	183	buf[0] = address;
	184	buf[0x20] = sd->sensor->i2c_addr;
	185	buf[0x21] = 0;
	186
	187	/* Read I2C register */
	188	buf[0x22] = I2C_READ_CMD;
	189
	190	err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
	191	0x04, 0x40, 0x1400, 0, buf, I2C_BUFFER_LENGTH,
	192	STV06XX_URB_MSG_TIMEOUT);
	193	if (err < 0) {
133a9fe9	194	pr_err("I2C: Read error writing address: %d\n", err);
4c98834a EA	195	return err;
	196	}
	197
	198	err = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
	199	0x04, 0xc0, 0x1410, 0, buf, sd->sensor->i2c_len,
	200	STV06XX_URB_MSG_TIMEOUT);
	201	if (sd->sensor->i2c_len == 2)
	202	*value = buf[0] \| (buf[1] << 8);
	203	else
	204	*value = buf[0];
	205
be3bdfb6	206	PDEBUG(D_CONF, "I2C: Read 0x%x from address 0x%x, status: %d",
4c98834a EA	207	*value, address, err);
	208
	209	return (err < 0) ? err : 0;
	210	}
	211
	212	/* Dumps all bridge registers */
	213	static void stv06xx_dump_bridge(struct sd *sd)
	214	{
	215	int i;
	216	u8 data, buf;
	217
133a9fe9	218	pr_info("Dumping all stv06xx bridge registers\n");
4c98834a EA	219	for (i = 0x1400; i < 0x160f; i++) {
	220	stv06xx_read_bridge(sd, i, &data);
	221
133a9fe9	222	pr_info("Read 0x%x from address 0x%x\n", data, i);
4c98834a EA	223	}
4c98834a EA	224
133a9fe9	225	pr_info("Testing stv06xx bridge registers for writability\n");
4c98834a EA	226	for (i = 0x1400; i < 0x160f; i++) {
	227	stv06xx_read_bridge(sd, i, &data);
	228	buf = data;
	229
	230	stv06xx_write_bridge(sd, i, 0xff);
	231	stv06xx_read_bridge(sd, i, &data);
	232	if (data == 0xff)
133a9fe9	233	pr_info("Register 0x%x is read/write\n", i);
4c98834a	234	else if (data != buf)
133a9fe9 JP	235	pr_info("Register 0x%x is read/write, but only partially\n",
133a9fe9 JP	236	i);
4c98834a	237	else
133a9fe9	238	pr_info("Register 0x%x is read-only\n", i);
4c98834a EA	239
	240	stv06xx_write_bridge(sd, i, buf);
	241	}
	242	}
	243
	244	/* this function is called at probe and resume time */
	245	static int stv06xx_init(struct gspca_dev *gspca_dev)
	246	{
	247	struct sd sd = (struct sd ) gspca_dev;
	248	int err;
	249
	250	PDEBUG(D_PROBE, "Initializing camera");
	251
	252	/* Let the usb init settle for a bit
	253	before performing the initialization */
	254	msleep(250);
	255
	256	err = sd->sensor->init(sd);
	257
8668d504	258	if (dump_sensor && sd->sensor->dump)
4c98834a EA	259	sd->sensor->dump(sd);
	260
	261	return (err < 0) ? err : 0;
	262	}
	263
dec9c514 HV	264	/* this function is called at probe time */
	265	static int stv06xx_init_controls(struct gspca_dev *gspca_dev)
	266	{
	267	struct sd sd = (struct sd ) gspca_dev;
	268
	269	PDEBUG(D_PROBE, "Initializing controls");
	270
a8a47860	271	gspca_dev->vdev.ctrl_handler = &gspca_dev->ctrl_handler;
dec9c514 HV	272	return sd->sensor->init_controls(sd);
	273	}
	274
4c98834a EA	275	/* Start the camera */
	276	static int stv06xx_start(struct gspca_dev *gspca_dev)
	277	{
	278	struct sd sd = (struct sd ) gspca_dev;
c0b33bdc HG	279	struct usb_host_interface *alt;
	280	struct usb_interface *intf;
	281	int err, packet_size;
	282
	283	intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
	284	alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
	285	if (!alt) {
	286	PDEBUG(D_ERR, "Couldn't get altsetting");
	287	return -EIO;
	288	}
	289
	290	packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
	291	err = stv06xx_write_bridge(sd, STV_ISO_SIZE_L, packet_size);
	292	if (err < 0)
	293	return err;
4c98834a EA	294
	295	/* Prepare the sensor for start */
	296	err = sd->sensor->start(sd);
	297	if (err < 0)
	298	goto out;
	299
	300	/* Start isochronous streaming */
	301	err = stv06xx_write_bridge(sd, STV_ISO_ENABLE, 1);
	302
	303	out:
	304	if (err < 0)
	305	PDEBUG(D_STREAM, "Starting stream failed");
	306	else
	307	PDEBUG(D_STREAM, "Started streaming");
	308
	309	return (err < 0) ? err : 0;
	310	}
	311
c0b33bdc HG	312	static int stv06xx_isoc_init(struct gspca_dev *gspca_dev)
	313	{
	314	struct usb_host_interface *alt;
	315	struct sd sd = (struct sd ) gspca_dev;
	316
	317	/* Start isoc bandwidth "negotiation" at max isoc bandwidth */
5dae603d	318	alt = &gspca_dev->dev->actconfig->intf_cache[0]->altsetting[1];
c0b33bdc HG	319	alt->endpoint[0].desc.wMaxPacketSize =
	320	cpu_to_le16(sd->sensor->max_packet_size[gspca_dev->curr_mode]);
	321
	322	return 0;
	323	}
	324
	325	static int stv06xx_isoc_nego(struct gspca_dev *gspca_dev)
	326	{
	327	int ret, packet_size, min_packet_size;
	328	struct usb_host_interface *alt;
	329	struct sd sd = (struct sd ) gspca_dev;
	330
5dae603d	331	alt = &gspca_dev->dev->actconfig->intf_cache[0]->altsetting[1];
c0b33bdc HG	332	packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
	333	min_packet_size = sd->sensor->min_packet_size[gspca_dev->curr_mode];
	334	if (packet_size <= min_packet_size)
	335	return -EIO;
	336
	337	packet_size -= 100;
	338	if (packet_size < min_packet_size)
	339	packet_size = min_packet_size;
	340	alt->endpoint[0].desc.wMaxPacketSize = cpu_to_le16(packet_size);
	341
	342	ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
	343	if (ret < 0)
	344	PDEBUG(D_ERR\|D_STREAM, "set alt 1 err %d", ret);
	345
	346	return ret;
	347	}
	348
4c98834a EA	349	static void stv06xx_stopN(struct gspca_dev *gspca_dev)
	350	{
	351	int err;
	352	struct sd sd = (struct sd ) gspca_dev;
	353
	354	/* stop ISO-streaming */
	355	err = stv06xx_write_bridge(sd, STV_ISO_ENABLE, 0);
	356	if (err < 0)
	357	goto out;
	358
	359	err = sd->sensor->stop(sd);
4c98834a EA	360
	361	out:
	362	if (err < 0)
	363	PDEBUG(D_STREAM, "Failed to stop stream");
	364	else
	365	PDEBUG(D_STREAM, "Stopped streaming");
	366	}
	367
	368	/*
	369	* Analyse an USB packet of the data stream and store it appropriately.
	370	* Each packet contains an integral number of chunks. Each chunk has
	371	* 2-bytes identification, followed by 2-bytes that describe the chunk
	372	* length. Known/guessed chunk identifications are:
	373	* 8001/8005/C001/C005 - Begin new frame
	374	* 8002/8006/C002/C006 - End frame
	375	* 0200/4200 - Contains actual image data, bayer or compressed
	376	* 0005 - 11 bytes of unknown data
	377	* 0100 - 2 bytes of unknown data
	378	* The 0005 and 0100 chunks seem to appear only in compressed stream.
	379	*/
	380	static void stv06xx_pkt_scan(struct gspca_dev *gspca_dev,
76dd272b	381	u8 data, / isoc packet */
4c98834a EA	382	int len) /* iso packet length */
4c98834a EA	383	{
8668d504 HG	384	struct sd sd = (struct sd ) gspca_dev;
8668d504 HG	385
4c98834a EA	386	PDEBUG(D_PACK, "Packet of length %d arrived", len);
	387
	388	/* A packet may contain several frames
	389	loop until the whole packet is reached */
	390	while (len) {
	391	int id, chunk_len;
	392
	393	if (len < 4) {
	394	PDEBUG(D_PACK, "Packet is smaller than 4 bytes");
	395	return;
	396	}
	397
	398	/* Capture the id */
	399	id = (data[0] << 8) \| data[1];
	400
	401	/* Capture the chunk length */
	402	chunk_len = (data[2] << 8) \| data[3];
	403	PDEBUG(D_PACK, "Chunk id: %x, length: %d", id, chunk_len);
	404
	405	data += 4;
	406	len -= 4;
	407
	408	if (len < chunk_len) {
	409	PDEBUG(D_ERR, "URB packet length is smaller"
	410	" than the specified chunk length");
8668d504	411	gspca_dev->last_packet_type = DISCARD_PACKET;
4c98834a EA	412	return;
	413	}
	414
8668d504	415	/* First byte seem to be 02=data 2nd byte is unknown??? */
1d00d6c1	416	if (sd->bridge == BRIDGE_ST6422 && (id & 0xff00) == 0x0200)
8668d504 HG	417	goto frame_data;
8668d504 HG	418
4c98834a EA	419	switch (id) {
	420	case 0x0200:
	421	case 0x4200:
8668d504	422	frame_data:
4c98834a EA	423	PDEBUG(D_PACK, "Frame data packet detected");
4c98834a EA	424
8668d504 HG	425	if (sd->to_skip) {
	426	int skip = (sd->to_skip < chunk_len) ?
	427	sd->to_skip : chunk_len;
	428	data += skip;
	429	len -= skip;
	430	chunk_len -= skip;
	431	sd->to_skip -= skip;
	432	}
	433
76dd272b	434	gspca_frame_add(gspca_dev, INTER_PACKET,
4c98834a EA	435	data, chunk_len);
	436	break;
	437
	438	case 0x8001:
	439	case 0x8005:
	440	case 0xc001:
	441	case 0xc005:
	442	PDEBUG(D_PACK, "Starting new frame");
	443
	444	/* Create a new frame, chunk length should be zero */
	445	gspca_frame_add(gspca_dev, FIRST_PACKET,
76dd272b	446	NULL, 0);
4c98834a	447
8668d504 HG	448	if (sd->bridge == BRIDGE_ST6422)
	449	sd->to_skip = gspca_dev->width * 4;
	450
4c98834a EA	451	if (chunk_len)
	452	PDEBUG(D_ERR, "Chunk length is "
	453	"non-zero on a SOF");
	454	break;
	455
	456	case 0x8002:
	457	case 0x8006:
	458	case 0xc002:
	459	PDEBUG(D_PACK, "End of frame detected");
	460
	461	/* Complete the last frame (if any) */
76dd272b JFM	462	gspca_frame_add(gspca_dev, LAST_PACKET,
76dd272b JFM	463	NULL, 0);
4c98834a EA	464
	465	if (chunk_len)
	466	PDEBUG(D_ERR, "Chunk length is "
	467	"non-zero on a EOF");
	468	break;
	469
	470	case 0x0005:
	471	PDEBUG(D_PACK, "Chunk 0x005 detected");
	472	/* Unknown chunk with 11 bytes of data,
	473	occurs just before end of each frame
	474	in compressed mode */
	475	break;
	476
	477	case 0x0100:
	478	PDEBUG(D_PACK, "Chunk 0x0100 detected");
	479	/* Unknown chunk with 2 bytes of data,
	480	occurs 2-3 times per USB interrupt */
	481	break;
8668d504 HG	482	case 0x42ff:
	483	PDEBUG(D_PACK, "Chunk 0x42ff detected");
	484	/* Special chunk seen sometimes on the ST6422 */
	485	break;
4c98834a	486	default:
8668d504	487	PDEBUG(D_PACK, "Unknown chunk 0x%04x detected", id);
4c98834a EA	488	/* Unknown chunk */
	489	}
	490	data += chunk_len;
	491	len -= chunk_len;
	492	}
	493	}
	494
2856643e	495	#if defined(CONFIG_INPUT) \|\| defined(CONFIG_INPUT_MODULE)
0158e98f HG	496	static int sd_int_pkt_scan(struct gspca_dev *gspca_dev,
	497	u8 data, / interrupt packet data */
	498	int len) /* interrupt packet length */
	499	{
	500	int ret = -EINVAL;
	501
	502	if (len == 1 && data[0] == 0x80) {
	503	input_report_key(gspca_dev->input_dev, KEY_CAMERA, 1);
	504	input_sync(gspca_dev->input_dev);
	505	ret = 0;
	506	}
	507
	508	if (len == 1 && data[0] == 0x88) {
	509	input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0);
	510	input_sync(gspca_dev->input_dev);
	511	ret = 0;
	512	}
	513
	514	return ret;
	515	}
	516	#endif
	517
4c98834a EA	518	static int stv06xx_config(struct gspca_dev *gspca_dev,
	519	const struct usb_device_id *id);
	520
	521	/* sub-driver description */
	522	static const struct sd_desc sd_desc = {
	523	.name = MODULE_NAME,
	524	.config = stv06xx_config,
	525	.init = stv06xx_init,
dec9c514	526	.init_controls = stv06xx_init_controls,
4c98834a EA	527	.start = stv06xx_start,
4c98834a EA	528	.stopN = stv06xx_stopN,
0158e98f	529	.pkt_scan = stv06xx_pkt_scan,
c0b33bdc HG	530	.isoc_init = stv06xx_isoc_init,
c0b33bdc HG	531	.isoc_nego = stv06xx_isoc_nego,
2856643e	532	#if defined(CONFIG_INPUT) \|\| defined(CONFIG_INPUT_MODULE)
0158e98f HG	533	.int_pkt_scan = sd_int_pkt_scan,
0158e98f HG	534	#endif
4c98834a EA	535	};
	536
	537	/* This function is called at probe time */
	538	static int stv06xx_config(struct gspca_dev *gspca_dev,
	539	const struct usb_device_id *id)
	540	{
	541	struct sd sd = (struct sd ) gspca_dev;
4c98834a EA	542
	543	PDEBUG(D_PROBE, "Configuring camera");
	544
8668d504	545	sd->bridge = id->driver_info;
d67a1ada	546	gspca_dev->sd_desc = &sd_desc;
4c98834a EA	547
	548	if (dump_bridge)
	549	stv06xx_dump_bridge(sd);
	550
8668d504 HG	551	sd->sensor = &stv06xx_sensor_st6422;
	552	if (!sd->sensor->probe(sd))
	553	return 0;
	554
4c98834a EA	555	sd->sensor = &stv06xx_sensor_vv6410;
	556	if (!sd->sensor->probe(sd))
	557	return 0;
	558
	559	sd->sensor = &stv06xx_sensor_hdcs1x00;
	560	if (!sd->sensor->probe(sd))
	561	return 0;
	562
	563	sd->sensor = &stv06xx_sensor_hdcs1020;
	564	if (!sd->sensor->probe(sd))
	565	return 0;
	566
	567	sd->sensor = &stv06xx_sensor_pb0100;
	568	if (!sd->sensor->probe(sd))
	569	return 0;
	570
	571	sd->sensor = NULL;
	572	return -ENODEV;
	573	}
	574
	575
	576
	577	/* -- module initialisation -- */
95c967c1	578	static const struct usb_device_id device_table[] = {
8668d504 HG	579	/* QuickCam Express */
	580	{USB_DEVICE(0x046d, 0x0840), .driver_info = BRIDGE_STV600 },
	581	/* LEGO cam / QuickCam Web */
	582	{USB_DEVICE(0x046d, 0x0850), .driver_info = BRIDGE_STV610 },
	583	/* Dexxa WebCam USB */
	584	{USB_DEVICE(0x046d, 0x0870), .driver_info = BRIDGE_STV602 },
	585	/* QuickCam Messenger */
	586	{USB_DEVICE(0x046D, 0x08F0), .driver_info = BRIDGE_ST6422 },
	587	/* QuickCam Communicate */
	588	{USB_DEVICE(0x046D, 0x08F5), .driver_info = BRIDGE_ST6422 },
	589	/* QuickCam Messenger (new) */
	590	{USB_DEVICE(0x046D, 0x08F6), .driver_info = BRIDGE_ST6422 },
4c98834a EA	591	{}
	592	};
	593	MODULE_DEVICE_TABLE(usb, device_table);
	594
	595	/* -- device connect -- */
	596	static int sd_probe(struct usb_interface *intf,
	597	const struct usb_device_id *id)
	598	{
	599	PDEBUG(D_PROBE, "Probing for a stv06xx device");
	600	return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
	601	THIS_MODULE);
	602	}
	603
8a787b40	604	static void sd_disconnect(struct usb_interface *intf)
4c98834a EA	605	{
	606	struct gspca_dev *gspca_dev = usb_get_intfdata(intf);
	607	struct sd sd = (struct sd ) gspca_dev;
dec9c514	608	void *priv = sd->sensor_priv;
4c98834a EA	609	PDEBUG(D_PROBE, "Disconnecting the stv06xx device");
4c98834a EA	610
dec9c514	611	sd->sensor = NULL;
4c98834a	612	gspca_disconnect(intf);
dec9c514	613	kfree(priv);
4c98834a EA	614	}
	615
	616	static struct usb_driver sd_driver = {
	617	.name = MODULE_NAME,
	618	.id_table = device_table,
	619	.probe = sd_probe,
	620	.disconnect = sd_disconnect,
	621	#ifdef CONFIG_PM
	622	.suspend = gspca_suspend,
	623	.resume = gspca_resume,
dec9c514	624	.reset_resume = gspca_resume,
4c98834a EA	625	#endif
	626	};
	627
ecb3b2b3	628	module_usb_driver(sd_driver);
4c98834a EA	629
	630	module_param(dump_bridge, bool, S_IRUGO \| S_IWUSR);
	631	MODULE_PARM_DESC(dump_bridge, "Dumps all usb bridge registers at startup");
	632
	633	module_param(dump_sensor, bool, S_IRUGO \| S_IWUSR);
	634	MODULE_PARM_DESC(dump_sensor, "Dumps all sensor registers at startup");