[mirror_ubuntu-artful-kernel.git] / drivers / media / usb / 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.
 *
 * 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 gspca_dev *gspca_dev = (struct gspca_dev *)sd;
	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 gspca_dev *gspca_dev = (struct gspca_dev *)sd;
	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 gspca_dev *gspca_dev = (struct gspca_dev *)sd;
	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 gspca_dev *gspca_dev = (struct gspca_dev *)sd;
	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 gspca_dev *gspca_dev = (struct gspca_dev *)sd;
	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) {
		PERR("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)
		PERR("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) {
			PERR("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->pixfmt.width * 4;

			if (chunk_len)
				PERR("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)
				PERR("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 IS_ENABLED(CONFIG_INPUT)
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 || data[0] == 0x10)) {
		input_report_key(gspca_dev->input_dev, KEY_CAMERA, 1);
		input_sync(gspca_dev->input_dev);
		ret = 0;
	}

	if (len == 1 && (data[0] == 0x88 || data[0] == 0x11)) {
		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 IS_ENABLED(CONFIG_INPUT)
	.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[] = {
	{USB_DEVICE(0x046d, 0x0840), .driver_info = BRIDGE_STV600 }, 	/* QuickCam Express */
	{USB_DEVICE(0x046d, 0x0850), .driver_info = BRIDGE_STV610 },	/* LEGO cam / QuickCam Web */
	{USB_DEVICE(0x046d, 0x0870), .driver_info = BRIDGE_STV602 },	/* Dexxa WebCam USB */
	{USB_DEVICE(0x046D, 0x08F0), .driver_info = BRIDGE_ST6422 },	/* QuickCam Messenger */
	{USB_DEVICE(0x046D, 0x08F5), .driver_info = BRIDGE_ST6422 },	/* QuickCam Communicate */
	{USB_DEVICE(0x046D, 0x08F6), .driver_info = BRIDGE_ST6422 },	/* QuickCam Messenger (new) */
	{}
};
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 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	*
4c98834a EA	17	* P/N 861037: Sensor HDCS1000 ASIC STV0600
	18	* P/N 861050-0010: Sensor HDCS1000 ASIC STV0600
	19	* P/N 861050-0020: Sensor Photobit PB100 ASIC STV0600-1 - QuickCam Express
	20	* P/N 861055: Sensor ST VV6410 ASIC STV0610 - LEGO cam
	21	* P/N 861075-0040: Sensor HDCS1000 ASIC
	22	* P/N 961179-0700: Sensor ST VV6410 ASIC STV0602 - Dexxa WebCam USB
	23	* P/N 861040-0000: Sensor ST VV6410 ASIC STV0610 - QuickCam Web
	24	*/
	25
133a9fe9 JP	26	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
133a9fe9 JP	27
0158e98f	28	#include <linux/input.h>
4c98834a EA	29	#include "stv06xx_sensor.h"
	30
	31	MODULE_AUTHOR("Erik Andrén");
	32	MODULE_DESCRIPTION("STV06XX USB Camera Driver");
	33	MODULE_LICENSE("GPL");
	34
90ab5ee9 RR	35	static bool dump_bridge;
90ab5ee9 RR	36	static bool dump_sensor;
4c98834a EA	37
	38	int stv06xx_write_bridge(struct sd *sd, u16 address, u16 i2c_data)
	39	{
	40	int err;
c93396e1	41	struct gspca_dev gspca_dev = (struct gspca_dev )sd;
4c98834a EA	42	struct usb_device *udev = sd->gspca_dev.dev;
4c98834a EA	43	__u8 *buf = sd->gspca_dev.usb_buf;
c93396e1	44
4c98834a EA	45	u8 len = (i2c_data > 0xff) ? 2 : 1;
	46
	47	buf[0] = i2c_data & 0xff;
	48	buf[1] = (i2c_data >> 8) & 0xff;
	49
	50	err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
	51	0x04, 0x40, address, 0, buf, len,
	52	STV06XX_URB_MSG_TIMEOUT);
	53
4c98834a EA	54	PDEBUG(D_CONF, "Written 0x%x to address 0x%x, status: %d",
	55	i2c_data, address, err);
	56
	57	return (err < 0) ? err : 0;
	58	}
	59
	60	int stv06xx_read_bridge(struct sd sd, u16 address, u8 i2c_data)
	61	{
	62	int err;
c93396e1	63	struct gspca_dev gspca_dev = (struct gspca_dev )sd;
4c98834a EA	64	struct usb_device *udev = sd->gspca_dev.dev;
	65	__u8 *buf = sd->gspca_dev.usb_buf;
	66
	67	err = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
	68	0x04, 0xc0, address, 0, buf, 1,
	69	STV06XX_URB_MSG_TIMEOUT);
	70
	71	*i2c_data = buf[0];
	72
be3bdfb6	73	PDEBUG(D_CONF, "Reading 0x%x from address 0x%x, status %d",
4c98834a EA	74	*i2c_data, address, err);
	75
	76	return (err < 0) ? err : 0;
	77	}
	78
	79	/* Wraps the normal write sensor bytes / words functions for writing a
	80	single value */
	81	int stv06xx_write_sensor(struct sd *sd, u8 address, u16 value)
	82	{
	83	if (sd->sensor->i2c_len == 2) {
	84	u16 data[2] = { address, value };
	85	return stv06xx_write_sensor_words(sd, data, 1);
	86	} else {
	87	u8 data[2] = { address, value };
	88	return stv06xx_write_sensor_bytes(sd, data, 1);
	89	}
	90	}
	91
	92	static int stv06xx_write_sensor_finish(struct sd *sd)
	93	{
	94	int err = 0;
	95
8668d504	96	if (sd->bridge == BRIDGE_STV610) {
4c98834a EA	97	struct usb_device *udev = sd->gspca_dev.dev;
	98	__u8 *buf = sd->gspca_dev.usb_buf;
	99
4c98834a EA	100	buf[0] = 0;
	101	err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
	102	0x04, 0x40, 0x1704, 0, buf, 1,
	103	STV06XX_URB_MSG_TIMEOUT);
	104	}
	105
	106	return (err < 0) ? err : 0;
	107	}
	108
	109	int stv06xx_write_sensor_bytes(struct sd sd, const u8 data, u8 len)
	110	{
	111	int err, i, j;
c93396e1	112	struct gspca_dev gspca_dev = (struct gspca_dev )sd;
4c98834a EA	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;
c93396e1	142	struct gspca_dev gspca_dev = (struct gspca_dev )sd;
4c98834a EA	143	struct usb_device *udev = sd->gspca_dev.dev;
	144	__u8 *buf = sd->gspca_dev.usb_buf;
	145
be3bdfb6	146	PDEBUG(D_CONF, "I2C: Command buffer contains %d entries", len);
4c98834a EA	147
	148	for (i = 0; i < len;) {
	149	/* Build the command buffer */
	150	memset(buf, 0, I2C_BUFFER_LENGTH);
	151	for (j = 0; j < I2C_MAX_WORDS && i < len; j++, i++) {
	152	buf[j] = data[2*i];
	153	buf[0x10 + j * 2] = data[2*i+1];
	154	buf[0x10 + j * 2 + 1] = data[2*i+1] >> 8;
be3bdfb6	155	PDEBUG(D_CONF, "I2C: Writing 0x%04x to reg 0x%02x",
4c98834a EA	156	data[2i+1], data[2i]);
	157	}
	158	buf[0x20] = sd->sensor->i2c_addr;
	159	buf[0x21] = j - 1; /* Number of commands to send - 1 */
	160	buf[0x22] = I2C_WRITE_CMD;
	161	err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
	162	0x04, 0x40, 0x0400, 0, buf,
	163	I2C_BUFFER_LENGTH,
	164	STV06XX_URB_MSG_TIMEOUT);
	165	if (err < 0)
	166	return err;
	167	}
	168	return stv06xx_write_sensor_finish(sd);
	169	}
	170
	171	int stv06xx_read_sensor(struct sd sd, const u8 address, u16 value)
	172	{
	173	int err;
c93396e1	174	struct gspca_dev gspca_dev = (struct gspca_dev )sd;
4c98834a EA	175	struct usb_device *udev = sd->gspca_dev.dev;
	176	__u8 *buf = sd->gspca_dev.usb_buf;
	177
	178	err = stv06xx_write_bridge(sd, STV_I2C_FLUSH, sd->sensor->i2c_flush);
	179	if (err < 0)
	180	return err;
	181
	182	/* Clear mem */
	183	memset(buf, 0, I2C_BUFFER_LENGTH);
	184
	185	buf[0] = address;
	186	buf[0x20] = sd->sensor->i2c_addr;
	187	buf[0x21] = 0;
	188
	189	/* Read I2C register */
	190	buf[0x22] = I2C_READ_CMD;
	191
	192	err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
	193	0x04, 0x40, 0x1400, 0, buf, I2C_BUFFER_LENGTH,
	194	STV06XX_URB_MSG_TIMEOUT);
	195	if (err < 0) {
133a9fe9	196	pr_err("I2C: Read error writing address: %d\n", err);
4c98834a EA	197	return err;
	198	}
	199
	200	err = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
	201	0x04, 0xc0, 0x1410, 0, buf, sd->sensor->i2c_len,
	202	STV06XX_URB_MSG_TIMEOUT);
	203	if (sd->sensor->i2c_len == 2)
	204	*value = buf[0] \| (buf[1] << 8);
	205	else
	206	*value = buf[0];
	207
be3bdfb6	208	PDEBUG(D_CONF, "I2C: Read 0x%x from address 0x%x, status: %d",
4c98834a EA	209	*value, address, err);
	210
	211	return (err < 0) ? err : 0;
	212	}
	213
	214	/* Dumps all bridge registers */
	215	static void stv06xx_dump_bridge(struct sd *sd)
	216	{
	217	int i;
	218	u8 data, buf;
	219
133a9fe9	220	pr_info("Dumping all stv06xx bridge registers\n");
4c98834a EA	221	for (i = 0x1400; i < 0x160f; i++) {
	222	stv06xx_read_bridge(sd, i, &data);
	223
133a9fe9	224	pr_info("Read 0x%x from address 0x%x\n", data, i);
4c98834a EA	225	}
4c98834a EA	226
133a9fe9	227	pr_info("Testing stv06xx bridge registers for writability\n");
4c98834a EA	228	for (i = 0x1400; i < 0x160f; i++) {
	229	stv06xx_read_bridge(sd, i, &data);
	230	buf = data;
	231
	232	stv06xx_write_bridge(sd, i, 0xff);
	233	stv06xx_read_bridge(sd, i, &data);
	234	if (data == 0xff)
133a9fe9	235	pr_info("Register 0x%x is read/write\n", i);
4c98834a	236	else if (data != buf)
133a9fe9 JP	237	pr_info("Register 0x%x is read/write, but only partially\n",
133a9fe9 JP	238	i);
4c98834a	239	else
133a9fe9	240	pr_info("Register 0x%x is read-only\n", i);
4c98834a EA	241
	242	stv06xx_write_bridge(sd, i, buf);
	243	}
	244	}
	245
	246	/* this function is called at probe and resume time */
	247	static int stv06xx_init(struct gspca_dev *gspca_dev)
	248	{
	249	struct sd sd = (struct sd ) gspca_dev;
	250	int err;
	251
	252	PDEBUG(D_PROBE, "Initializing camera");
	253
	254	/* Let the usb init settle for a bit
	255	before performing the initialization */
	256	msleep(250);
	257
	258	err = sd->sensor->init(sd);
	259
8668d504	260	if (dump_sensor && sd->sensor->dump)
4c98834a EA	261	sd->sensor->dump(sd);
	262
	263	return (err < 0) ? err : 0;
	264	}
	265
dec9c514 HV	266	/* this function is called at probe time */
	267	static int stv06xx_init_controls(struct gspca_dev *gspca_dev)
	268	{
	269	struct sd sd = (struct sd ) gspca_dev;
	270
	271	PDEBUG(D_PROBE, "Initializing controls");
	272
a8a47860	273	gspca_dev->vdev.ctrl_handler = &gspca_dev->ctrl_handler;
dec9c514 HV	274	return sd->sensor->init_controls(sd);
	275	}
	276
4c98834a EA	277	/* Start the camera */
	278	static int stv06xx_start(struct gspca_dev *gspca_dev)
	279	{
	280	struct sd sd = (struct sd ) gspca_dev;
c0b33bdc HG	281	struct usb_host_interface *alt;
	282	struct usb_interface *intf;
	283	int err, packet_size;
	284
	285	intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
	286	alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
	287	if (!alt) {
c93396e1	288	PERR("Couldn't get altsetting");
c0b33bdc HG	289	return -EIO;
	290	}
	291
	292	packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
	293	err = stv06xx_write_bridge(sd, STV_ISO_SIZE_L, packet_size);
	294	if (err < 0)
	295	return err;
4c98834a EA	296
	297	/* Prepare the sensor for start */
	298	err = sd->sensor->start(sd);
	299	if (err < 0)
	300	goto out;
	301
	302	/* Start isochronous streaming */
	303	err = stv06xx_write_bridge(sd, STV_ISO_ENABLE, 1);
	304
	305	out:
	306	if (err < 0)
	307	PDEBUG(D_STREAM, "Starting stream failed");
	308	else
	309	PDEBUG(D_STREAM, "Started streaming");
	310
	311	return (err < 0) ? err : 0;
	312	}
	313
c0b33bdc HG	314	static int stv06xx_isoc_init(struct gspca_dev *gspca_dev)
	315	{
	316	struct usb_host_interface *alt;
	317	struct sd sd = (struct sd ) gspca_dev;
	318
	319	/* Start isoc bandwidth "negotiation" at max isoc bandwidth */
5dae603d	320	alt = &gspca_dev->dev->actconfig->intf_cache[0]->altsetting[1];
c0b33bdc HG	321	alt->endpoint[0].desc.wMaxPacketSize =
	322	cpu_to_le16(sd->sensor->max_packet_size[gspca_dev->curr_mode]);
	323
	324	return 0;
	325	}
	326
	327	static int stv06xx_isoc_nego(struct gspca_dev *gspca_dev)
	328	{
	329	int ret, packet_size, min_packet_size;
	330	struct usb_host_interface *alt;
	331	struct sd sd = (struct sd ) gspca_dev;
	332
5dae603d	333	alt = &gspca_dev->dev->actconfig->intf_cache[0]->altsetting[1];
c0b33bdc HG	334	packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
	335	min_packet_size = sd->sensor->min_packet_size[gspca_dev->curr_mode];
	336	if (packet_size <= min_packet_size)
	337	return -EIO;
	338
	339	packet_size -= 100;
	340	if (packet_size < min_packet_size)
	341	packet_size = min_packet_size;
	342	alt->endpoint[0].desc.wMaxPacketSize = cpu_to_le16(packet_size);
	343
	344	ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
	345	if (ret < 0)
c93396e1	346	PERR("set alt 1 err %d", ret);
c0b33bdc HG	347
	348	return ret;
	349	}
	350
4c98834a EA	351	static void stv06xx_stopN(struct gspca_dev *gspca_dev)
	352	{
	353	int err;
	354	struct sd sd = (struct sd ) gspca_dev;
	355
	356	/* stop ISO-streaming */
	357	err = stv06xx_write_bridge(sd, STV_ISO_ENABLE, 0);
	358	if (err < 0)
	359	goto out;
	360
	361	err = sd->sensor->stop(sd);
4c98834a EA	362
	363	out:
	364	if (err < 0)
	365	PDEBUG(D_STREAM, "Failed to stop stream");
	366	else
	367	PDEBUG(D_STREAM, "Stopped streaming");
	368	}
	369
	370	/*
	371	* Analyse an USB packet of the data stream and store it appropriately.
	372	* Each packet contains an integral number of chunks. Each chunk has
	373	* 2-bytes identification, followed by 2-bytes that describe the chunk
	374	* length. Known/guessed chunk identifications are:
	375	* 8001/8005/C001/C005 - Begin new frame
	376	* 8002/8006/C002/C006 - End frame
	377	* 0200/4200 - Contains actual image data, bayer or compressed
	378	* 0005 - 11 bytes of unknown data
	379	* 0100 - 2 bytes of unknown data
	380	* The 0005 and 0100 chunks seem to appear only in compressed stream.
	381	*/
	382	static void stv06xx_pkt_scan(struct gspca_dev *gspca_dev,
76dd272b	383	u8 data, / isoc packet */
4c98834a EA	384	int len) /* iso packet length */
4c98834a EA	385	{
8668d504 HG	386	struct sd sd = (struct sd ) gspca_dev;
8668d504 HG	387
4c98834a EA	388	PDEBUG(D_PACK, "Packet of length %d arrived", len);
	389
	390	/* A packet may contain several frames
	391	loop until the whole packet is reached */
	392	while (len) {
	393	int id, chunk_len;
	394
	395	if (len < 4) {
	396	PDEBUG(D_PACK, "Packet is smaller than 4 bytes");
	397	return;
	398	}
	399
	400	/* Capture the id */
	401	id = (data[0] << 8) \| data[1];
	402
	403	/* Capture the chunk length */
	404	chunk_len = (data[2] << 8) \| data[3];
	405	PDEBUG(D_PACK, "Chunk id: %x, length: %d", id, chunk_len);
	406
	407	data += 4;
	408	len -= 4;
	409
	410	if (len < chunk_len) {
1ddc9f75	411	PERR("URB packet length is smaller than the specified chunk length");
8668d504	412	gspca_dev->last_packet_type = DISCARD_PACKET;
4c98834a EA	413	return;
	414	}
	415
8668d504	416	/* First byte seem to be 02=data 2nd byte is unknown??? */
1d00d6c1	417	if (sd->bridge == BRIDGE_ST6422 && (id & 0xff00) == 0x0200)
8668d504 HG	418	goto frame_data;
8668d504 HG	419
4c98834a EA	420	switch (id) {
	421	case 0x0200:
	422	case 0x4200:
8668d504	423	frame_data:
4c98834a EA	424	PDEBUG(D_PACK, "Frame data packet detected");
4c98834a EA	425
8668d504 HG	426	if (sd->to_skip) {
	427	int skip = (sd->to_skip < chunk_len) ?
	428	sd->to_skip : chunk_len;
	429	data += skip;
	430	len -= skip;
	431	chunk_len -= skip;
	432	sd->to_skip -= skip;
	433	}
	434
76dd272b	435	gspca_frame_add(gspca_dev, INTER_PACKET,
4c98834a EA	436	data, chunk_len);
	437	break;
	438
	439	case 0x8001:
	440	case 0x8005:
	441	case 0xc001:
	442	case 0xc005:
	443	PDEBUG(D_PACK, "Starting new frame");
	444
	445	/* Create a new frame, chunk length should be zero */
	446	gspca_frame_add(gspca_dev, FIRST_PACKET,
76dd272b	447	NULL, 0);
4c98834a	448
8668d504	449	if (sd->bridge == BRIDGE_ST6422)
1966bc2a	450	sd->to_skip = gspca_dev->pixfmt.width * 4;
8668d504	451
4c98834a	452	if (chunk_len)
1ddc9f75	453	PERR("Chunk length is non-zero on a SOF");
4c98834a EA	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
4c98834a EA	465	if (chunk_len)
1ddc9f75	466	PERR("Chunk length is non-zero on a EOF");
4c98834a EA	467	break;
	468
	469	case 0x0005:
	470	PDEBUG(D_PACK, "Chunk 0x005 detected");
	471	/* Unknown chunk with 11 bytes of data,
	472	occurs just before end of each frame
	473	in compressed mode */
	474	break;
	475
	476	case 0x0100:
	477	PDEBUG(D_PACK, "Chunk 0x0100 detected");
	478	/* Unknown chunk with 2 bytes of data,
	479	occurs 2-3 times per USB interrupt */
	480	break;
8668d504 HG	481	case 0x42ff:
	482	PDEBUG(D_PACK, "Chunk 0x42ff detected");
	483	/* Special chunk seen sometimes on the ST6422 */
	484	break;
4c98834a	485	default:
8668d504	486	PDEBUG(D_PACK, "Unknown chunk 0x%04x detected", id);
4c98834a EA	487	/* Unknown chunk */
	488	}
	489	data += chunk_len;
	490	len -= chunk_len;
	491	}
	492	}
	493
00ddb707	494	#if IS_ENABLED(CONFIG_INPUT)
0158e98f HG	495	static int sd_int_pkt_scan(struct gspca_dev *gspca_dev,
	496	u8 data, / interrupt packet data */
	497	int len) /* interrupt packet length */
	498	{
	499	int ret = -EINVAL;
	500
13e6c9f4	501	if (len == 1 && (data[0] == 0x80 \|\| data[0] == 0x10)) {
0158e98f HG	502	input_report_key(gspca_dev->input_dev, KEY_CAMERA, 1);
	503	input_sync(gspca_dev->input_dev);
	504	ret = 0;
	505	}
	506
13e6c9f4	507	if (len == 1 && (data[0] == 0x88 \|\| data[0] == 0x11)) {
0158e98f HG	508	input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0);
	509	input_sync(gspca_dev->input_dev);
	510	ret = 0;
	511	}
	512
	513	return ret;
	514	}
	515	#endif
	516
4c98834a EA	517	static int stv06xx_config(struct gspca_dev *gspca_dev,
	518	const struct usb_device_id *id);
	519
	520	/* sub-driver description */
	521	static const struct sd_desc sd_desc = {
	522	.name = MODULE_NAME,
	523	.config = stv06xx_config,
	524	.init = stv06xx_init,
dec9c514	525	.init_controls = stv06xx_init_controls,
4c98834a EA	526	.start = stv06xx_start,
4c98834a EA	527	.stopN = stv06xx_stopN,
0158e98f	528	.pkt_scan = stv06xx_pkt_scan,
c0b33bdc HG	529	.isoc_init = stv06xx_isoc_init,
c0b33bdc HG	530	.isoc_nego = stv06xx_isoc_nego,
00ddb707	531	#if IS_ENABLED(CONFIG_INPUT)
0158e98f HG	532	.int_pkt_scan = sd_int_pkt_scan,
0158e98f HG	533	#endif
4c98834a EA	534	};
	535
	536	/* This function is called at probe time */
	537	static int stv06xx_config(struct gspca_dev *gspca_dev,
	538	const struct usb_device_id *id)
	539	{
	540	struct sd sd = (struct sd ) gspca_dev;
4c98834a EA	541
	542	PDEBUG(D_PROBE, "Configuring camera");
	543
8668d504	544	sd->bridge = id->driver_info;
d67a1ada	545	gspca_dev->sd_desc = &sd_desc;
4c98834a EA	546
	547	if (dump_bridge)
	548	stv06xx_dump_bridge(sd);
	549
8668d504 HG	550	sd->sensor = &stv06xx_sensor_st6422;
	551	if (!sd->sensor->probe(sd))
	552	return 0;
	553
4c98834a EA	554	sd->sensor = &stv06xx_sensor_vv6410;
	555	if (!sd->sensor->probe(sd))
	556	return 0;
	557
	558	sd->sensor = &stv06xx_sensor_hdcs1x00;
	559	if (!sd->sensor->probe(sd))
	560	return 0;
	561
	562	sd->sensor = &stv06xx_sensor_hdcs1020;
	563	if (!sd->sensor->probe(sd))
	564	return 0;
	565
	566	sd->sensor = &stv06xx_sensor_pb0100;
	567	if (!sd->sensor->probe(sd))
	568	return 0;
	569
	570	sd->sensor = NULL;
	571	return -ENODEV;
	572	}
	573
	574
	575
	576	/* -- module initialisation -- */
95c967c1	577	static const struct usb_device_id device_table[] = {
b2fdd0ee MCC	578	{USB_DEVICE(0x046d, 0x0840), .driver_info = BRIDGE_STV600 }, /* QuickCam Express */
	579	{USB_DEVICE(0x046d, 0x0850), .driver_info = BRIDGE_STV610 }, /* LEGO cam / QuickCam Web */
	580	{USB_DEVICE(0x046d, 0x0870), .driver_info = BRIDGE_STV602 }, /* Dexxa WebCam USB */
	581	{USB_DEVICE(0x046D, 0x08F0), .driver_info = BRIDGE_ST6422 }, /* QuickCam Messenger */
	582	{USB_DEVICE(0x046D, 0x08F5), .driver_info = BRIDGE_ST6422 }, /* QuickCam Communicate */
	583	{USB_DEVICE(0x046D, 0x08F6), .driver_info = BRIDGE_ST6422 }, /* QuickCam Messenger (new) */
4c98834a EA	584	{}
	585	};
	586	MODULE_DEVICE_TABLE(usb, device_table);
	587
	588	/* -- device connect -- */
	589	static int sd_probe(struct usb_interface *intf,
	590	const struct usb_device_id *id)
	591	{
4c98834a EA	592	return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
	593	THIS_MODULE);
	594	}
	595
8a787b40	596	static void sd_disconnect(struct usb_interface *intf)
4c98834a EA	597	{
	598	struct gspca_dev *gspca_dev = usb_get_intfdata(intf);
	599	struct sd sd = (struct sd ) gspca_dev;
dec9c514	600	void *priv = sd->sensor_priv;
4c98834a EA	601	PDEBUG(D_PROBE, "Disconnecting the stv06xx device");
4c98834a EA	602
dec9c514	603	sd->sensor = NULL;
4c98834a	604	gspca_disconnect(intf);
dec9c514	605	kfree(priv);
4c98834a EA	606	}
	607
	608	static struct usb_driver sd_driver = {
	609	.name = MODULE_NAME,
	610	.id_table = device_table,
	611	.probe = sd_probe,
	612	.disconnect = sd_disconnect,
	613	#ifdef CONFIG_PM
	614	.suspend = gspca_suspend,
	615	.resume = gspca_resume,
dec9c514	616	.reset_resume = gspca_resume,
4c98834a EA	617	#endif
	618	};
	619
ecb3b2b3	620	module_usb_driver(sd_driver);
4c98834a EA	621
	622	module_param(dump_bridge, bool, S_IRUGO \| S_IWUSR);
	623	MODULE_PARM_DESC(dump_bridge, "Dumps all usb bridge registers at startup");
	624
	625	module_param(dump_sensor, bool, S_IRUGO \| S_IWUSR);
	626	MODULE_PARM_DESC(dump_sensor, "Dumps all sensor registers at startup");