[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.
 *
 * 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 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[] = {
	/* 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)
{
	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;
c93396e1	45	struct gspca_dev gspca_dev = (struct gspca_dev )sd;
4c98834a EA	46	struct usb_device *udev = sd->gspca_dev.dev;
4c98834a EA	47	__u8 *buf = sd->gspca_dev.usb_buf;
c93396e1	48
4c98834a EA	49	u8 len = (i2c_data > 0xff) ? 2 : 1;
	50
	51	buf[0] = i2c_data & 0xff;
	52	buf[1] = (i2c_data >> 8) & 0xff;
	53
	54	err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
	55	0x04, 0x40, address, 0, buf, len,
	56	STV06XX_URB_MSG_TIMEOUT);
	57
4c98834a EA	58	PDEBUG(D_CONF, "Written 0x%x to address 0x%x, status: %d",
	59	i2c_data, address, err);
	60
	61	return (err < 0) ? err : 0;
	62	}
	63
	64	int stv06xx_read_bridge(struct sd sd, u16 address, u8 i2c_data)
	65	{
	66	int err;
c93396e1	67	struct gspca_dev gspca_dev = (struct gspca_dev )sd;
4c98834a EA	68	struct usb_device *udev = sd->gspca_dev.dev;
	69	__u8 *buf = sd->gspca_dev.usb_buf;
	70
	71	err = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
	72	0x04, 0xc0, address, 0, buf, 1,
	73	STV06XX_URB_MSG_TIMEOUT);
	74
	75	*i2c_data = buf[0];
	76
be3bdfb6	77	PDEBUG(D_CONF, "Reading 0x%x from address 0x%x, status %d",
4c98834a EA	78	*i2c_data, address, err);
	79
	80	return (err < 0) ? err : 0;
	81	}
	82
	83	/* Wraps the normal write sensor bytes / words functions for writing a
	84	single value */
	85	int stv06xx_write_sensor(struct sd *sd, u8 address, u16 value)
	86	{
	87	if (sd->sensor->i2c_len == 2) {
	88	u16 data[2] = { address, value };
	89	return stv06xx_write_sensor_words(sd, data, 1);
	90	} else {
	91	u8 data[2] = { address, value };
	92	return stv06xx_write_sensor_bytes(sd, data, 1);
	93	}
	94	}
	95
	96	static int stv06xx_write_sensor_finish(struct sd *sd)
	97	{
	98	int err = 0;
	99
8668d504	100	if (sd->bridge == BRIDGE_STV610) {
4c98834a EA	101	struct usb_device *udev = sd->gspca_dev.dev;
	102	__u8 *buf = sd->gspca_dev.usb_buf;
	103
4c98834a EA	104	buf[0] = 0;
	105	err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
	106	0x04, 0x40, 0x1704, 0, buf, 1,
	107	STV06XX_URB_MSG_TIMEOUT);
	108	}
	109
	110	return (err < 0) ? err : 0;
	111	}
	112
	113	int stv06xx_write_sensor_bytes(struct sd sd, const u8 data, u8 len)
	114	{
	115	int err, i, j;
c93396e1	116	struct gspca_dev gspca_dev = (struct gspca_dev )sd;
4c98834a EA	117	struct usb_device *udev = sd->gspca_dev.dev;
	118	__u8 *buf = sd->gspca_dev.usb_buf;
	119
be3bdfb6	120	PDEBUG(D_CONF, "I2C: Command buffer contains %d entries", len);
4c98834a EA	121	for (i = 0; i < len;) {
	122	/* Build the command buffer */
	123	memset(buf, 0, I2C_BUFFER_LENGTH);
	124	for (j = 0; j < I2C_MAX_BYTES && i < len; j++, i++) {
	125	buf[j] = data[2*i];
	126	buf[0x10 + j] = data[2*i+1];
be3bdfb6	127	PDEBUG(D_CONF, "I2C: Writing 0x%02x to reg 0x%02x",
4c98834a EA	128	data[2i+1], data[2i]);
	129	}
	130	buf[0x20] = sd->sensor->i2c_addr;
	131	buf[0x21] = j - 1; /* Number of commands to send - 1 */
	132	buf[0x22] = I2C_WRITE_CMD;
	133	err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
	134	0x04, 0x40, 0x0400, 0, buf,
	135	I2C_BUFFER_LENGTH,
	136	STV06XX_URB_MSG_TIMEOUT);
a8ca20b2 EA	137	if (err < 0)
a8ca20b2 EA	138	return err;
272ece5e MCC	139	}
272ece5e MCC	140	return stv06xx_write_sensor_finish(sd);
4c98834a EA	141	}
	142
	143	int stv06xx_write_sensor_words(struct sd sd, const u16 data, u8 len)
	144	{
	145	int err, i, j;
c93396e1	146	struct gspca_dev gspca_dev = (struct gspca_dev )sd;
4c98834a EA	147	struct usb_device *udev = sd->gspca_dev.dev;
	148	__u8 *buf = sd->gspca_dev.usb_buf;
	149
be3bdfb6	150	PDEBUG(D_CONF, "I2C: Command buffer contains %d entries", len);
4c98834a EA	151
	152	for (i = 0; i < len;) {
	153	/* Build the command buffer */
	154	memset(buf, 0, I2C_BUFFER_LENGTH);
	155	for (j = 0; j < I2C_MAX_WORDS && i < len; j++, i++) {
	156	buf[j] = data[2*i];
	157	buf[0x10 + j * 2] = data[2*i+1];
	158	buf[0x10 + j * 2 + 1] = data[2*i+1] >> 8;
be3bdfb6	159	PDEBUG(D_CONF, "I2C: Writing 0x%04x to reg 0x%02x",
4c98834a EA	160	data[2i+1], data[2i]);
	161	}
	162	buf[0x20] = sd->sensor->i2c_addr;
	163	buf[0x21] = j - 1; /* Number of commands to send - 1 */
	164	buf[0x22] = I2C_WRITE_CMD;
	165	err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
	166	0x04, 0x40, 0x0400, 0, buf,
	167	I2C_BUFFER_LENGTH,
	168	STV06XX_URB_MSG_TIMEOUT);
	169	if (err < 0)
	170	return err;
	171	}
	172	return stv06xx_write_sensor_finish(sd);
	173	}
	174
	175	int stv06xx_read_sensor(struct sd sd, const u8 address, u16 value)
	176	{
	177	int err;
c93396e1	178	struct gspca_dev gspca_dev = (struct gspca_dev )sd;
4c98834a EA	179	struct usb_device *udev = sd->gspca_dev.dev;
	180	__u8 *buf = sd->gspca_dev.usb_buf;
	181
	182	err = stv06xx_write_bridge(sd, STV_I2C_FLUSH, sd->sensor->i2c_flush);
	183	if (err < 0)
	184	return err;
	185
	186	/* Clear mem */
	187	memset(buf, 0, I2C_BUFFER_LENGTH);
	188
	189	buf[0] = address;
	190	buf[0x20] = sd->sensor->i2c_addr;
	191	buf[0x21] = 0;
	192
	193	/* Read I2C register */
	194	buf[0x22] = I2C_READ_CMD;
	195
	196	err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
	197	0x04, 0x40, 0x1400, 0, buf, I2C_BUFFER_LENGTH,
	198	STV06XX_URB_MSG_TIMEOUT);
	199	if (err < 0) {
133a9fe9	200	pr_err("I2C: Read error writing address: %d\n", err);
4c98834a EA	201	return err;
	202	}
	203
	204	err = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
	205	0x04, 0xc0, 0x1410, 0, buf, sd->sensor->i2c_len,
	206	STV06XX_URB_MSG_TIMEOUT);
	207	if (sd->sensor->i2c_len == 2)
	208	*value = buf[0] \| (buf[1] << 8);
	209	else
	210	*value = buf[0];
	211
be3bdfb6	212	PDEBUG(D_CONF, "I2C: Read 0x%x from address 0x%x, status: %d",
4c98834a EA	213	*value, address, err);
	214
	215	return (err < 0) ? err : 0;
	216	}
	217
	218	/* Dumps all bridge registers */
	219	static void stv06xx_dump_bridge(struct sd *sd)
	220	{
	221	int i;
	222	u8 data, buf;
	223
133a9fe9	224	pr_info("Dumping all stv06xx bridge registers\n");
4c98834a EA	225	for (i = 0x1400; i < 0x160f; i++) {
	226	stv06xx_read_bridge(sd, i, &data);
	227
133a9fe9	228	pr_info("Read 0x%x from address 0x%x\n", data, i);
4c98834a EA	229	}
4c98834a EA	230
133a9fe9	231	pr_info("Testing stv06xx bridge registers for writability\n");
4c98834a EA	232	for (i = 0x1400; i < 0x160f; i++) {
	233	stv06xx_read_bridge(sd, i, &data);
	234	buf = data;
	235
	236	stv06xx_write_bridge(sd, i, 0xff);
	237	stv06xx_read_bridge(sd, i, &data);
	238	if (data == 0xff)
133a9fe9	239	pr_info("Register 0x%x is read/write\n", i);
4c98834a	240	else if (data != buf)
133a9fe9 JP	241	pr_info("Register 0x%x is read/write, but only partially\n",
133a9fe9 JP	242	i);
4c98834a	243	else
133a9fe9	244	pr_info("Register 0x%x is read-only\n", i);
4c98834a EA	245
	246	stv06xx_write_bridge(sd, i, buf);
	247	}
	248	}
	249
	250	/* this function is called at probe and resume time */
	251	static int stv06xx_init(struct gspca_dev *gspca_dev)
	252	{
	253	struct sd sd = (struct sd ) gspca_dev;
	254	int err;
	255
	256	PDEBUG(D_PROBE, "Initializing camera");
	257
	258	/* Let the usb init settle for a bit
	259	before performing the initialization */
	260	msleep(250);
	261
	262	err = sd->sensor->init(sd);
	263
8668d504	264	if (dump_sensor && sd->sensor->dump)
4c98834a EA	265	sd->sensor->dump(sd);
	266
	267	return (err < 0) ? err : 0;
	268	}
	269
dec9c514 HV	270	/* this function is called at probe time */
	271	static int stv06xx_init_controls(struct gspca_dev *gspca_dev)
	272	{
	273	struct sd sd = (struct sd ) gspca_dev;
	274
	275	PDEBUG(D_PROBE, "Initializing controls");
	276
a8a47860	277	gspca_dev->vdev.ctrl_handler = &gspca_dev->ctrl_handler;
dec9c514 HV	278	return sd->sensor->init_controls(sd);
	279	}
	280
4c98834a EA	281	/* Start the camera */
	282	static int stv06xx_start(struct gspca_dev *gspca_dev)
	283	{
	284	struct sd sd = (struct sd ) gspca_dev;
c0b33bdc HG	285	struct usb_host_interface *alt;
	286	struct usb_interface *intf;
	287	int err, packet_size;
	288
	289	intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
	290	alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
	291	if (!alt) {
c93396e1	292	PERR("Couldn't get altsetting");
c0b33bdc HG	293	return -EIO;
	294	}
	295
	296	packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
	297	err = stv06xx_write_bridge(sd, STV_ISO_SIZE_L, packet_size);
	298	if (err < 0)
	299	return err;
4c98834a EA	300
	301	/* Prepare the sensor for start */
	302	err = sd->sensor->start(sd);
	303	if (err < 0)
	304	goto out;
	305
	306	/* Start isochronous streaming */
	307	err = stv06xx_write_bridge(sd, STV_ISO_ENABLE, 1);
	308
	309	out:
	310	if (err < 0)
	311	PDEBUG(D_STREAM, "Starting stream failed");
	312	else
	313	PDEBUG(D_STREAM, "Started streaming");
	314
	315	return (err < 0) ? err : 0;
	316	}
	317
c0b33bdc HG	318	static int stv06xx_isoc_init(struct gspca_dev *gspca_dev)
	319	{
	320	struct usb_host_interface *alt;
	321	struct sd sd = (struct sd ) gspca_dev;
	322
	323	/* Start isoc bandwidth "negotiation" at max isoc bandwidth */
5dae603d	324	alt = &gspca_dev->dev->actconfig->intf_cache[0]->altsetting[1];
c0b33bdc HG	325	alt->endpoint[0].desc.wMaxPacketSize =
	326	cpu_to_le16(sd->sensor->max_packet_size[gspca_dev->curr_mode]);
	327
	328	return 0;
	329	}
	330
	331	static int stv06xx_isoc_nego(struct gspca_dev *gspca_dev)
	332	{
	333	int ret, packet_size, min_packet_size;
	334	struct usb_host_interface *alt;
	335	struct sd sd = (struct sd ) gspca_dev;
	336
5dae603d	337	alt = &gspca_dev->dev->actconfig->intf_cache[0]->altsetting[1];
c0b33bdc HG	338	packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
	339	min_packet_size = sd->sensor->min_packet_size[gspca_dev->curr_mode];
	340	if (packet_size <= min_packet_size)
	341	return -EIO;
	342
	343	packet_size -= 100;
	344	if (packet_size < min_packet_size)
	345	packet_size = min_packet_size;
	346	alt->endpoint[0].desc.wMaxPacketSize = cpu_to_le16(packet_size);
	347
	348	ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
	349	if (ret < 0)
c93396e1	350	PERR("set alt 1 err %d", ret);
c0b33bdc HG	351
	352	return ret;
	353	}
	354
4c98834a EA	355	static void stv06xx_stopN(struct gspca_dev *gspca_dev)
	356	{
	357	int err;
	358	struct sd sd = (struct sd ) gspca_dev;
	359
	360	/* stop ISO-streaming */
	361	err = stv06xx_write_bridge(sd, STV_ISO_ENABLE, 0);
	362	if (err < 0)
	363	goto out;
	364
	365	err = sd->sensor->stop(sd);
4c98834a EA	366
	367	out:
	368	if (err < 0)
	369	PDEBUG(D_STREAM, "Failed to stop stream");
	370	else
	371	PDEBUG(D_STREAM, "Stopped streaming");
	372	}
	373
	374	/*
	375	* Analyse an USB packet of the data stream and store it appropriately.
	376	* Each packet contains an integral number of chunks. Each chunk has
	377	* 2-bytes identification, followed by 2-bytes that describe the chunk
	378	* length. Known/guessed chunk identifications are:
	379	* 8001/8005/C001/C005 - Begin new frame
	380	* 8002/8006/C002/C006 - End frame
	381	* 0200/4200 - Contains actual image data, bayer or compressed
	382	* 0005 - 11 bytes of unknown data
	383	* 0100 - 2 bytes of unknown data
	384	* The 0005 and 0100 chunks seem to appear only in compressed stream.
	385	*/
	386	static void stv06xx_pkt_scan(struct gspca_dev *gspca_dev,
76dd272b	387	u8 data, / isoc packet */
4c98834a EA	388	int len) /* iso packet length */
4c98834a EA	389	{
8668d504 HG	390	struct sd sd = (struct sd ) gspca_dev;
8668d504 HG	391
4c98834a EA	392	PDEBUG(D_PACK, "Packet of length %d arrived", len);
	393
	394	/* A packet may contain several frames
	395	loop until the whole packet is reached */
	396	while (len) {
	397	int id, chunk_len;
	398
	399	if (len < 4) {
	400	PDEBUG(D_PACK, "Packet is smaller than 4 bytes");
	401	return;
	402	}
	403
	404	/* Capture the id */
	405	id = (data[0] << 8) \| data[1];
	406
	407	/* Capture the chunk length */
	408	chunk_len = (data[2] << 8) \| data[3];
	409	PDEBUG(D_PACK, "Chunk id: %x, length: %d", id, chunk_len);
	410
	411	data += 4;
	412	len -= 4;
	413
	414	if (len < chunk_len) {
1ddc9f75	415	PERR("URB packet length is smaller than the specified chunk length");
8668d504	416	gspca_dev->last_packet_type = DISCARD_PACKET;
4c98834a EA	417	return;
	418	}
	419
8668d504	420	/* First byte seem to be 02=data 2nd byte is unknown??? */
1d00d6c1	421	if (sd->bridge == BRIDGE_ST6422 && (id & 0xff00) == 0x0200)
8668d504 HG	422	goto frame_data;
8668d504 HG	423
4c98834a EA	424	switch (id) {
	425	case 0x0200:
	426	case 0x4200:
8668d504	427	frame_data:
4c98834a EA	428	PDEBUG(D_PACK, "Frame data packet detected");
4c98834a EA	429
8668d504 HG	430	if (sd->to_skip) {
	431	int skip = (sd->to_skip < chunk_len) ?
	432	sd->to_skip : chunk_len;
	433	data += skip;
	434	len -= skip;
	435	chunk_len -= skip;
	436	sd->to_skip -= skip;
	437	}
	438
76dd272b	439	gspca_frame_add(gspca_dev, INTER_PACKET,
4c98834a EA	440	data, chunk_len);
	441	break;
	442
	443	case 0x8001:
	444	case 0x8005:
	445	case 0xc001:
	446	case 0xc005:
	447	PDEBUG(D_PACK, "Starting new frame");
	448
	449	/* Create a new frame, chunk length should be zero */
	450	gspca_frame_add(gspca_dev, FIRST_PACKET,
76dd272b	451	NULL, 0);
4c98834a	452
8668d504	453	if (sd->bridge == BRIDGE_ST6422)
1966bc2a	454	sd->to_skip = gspca_dev->pixfmt.width * 4;
8668d504	455
4c98834a	456	if (chunk_len)
1ddc9f75	457	PERR("Chunk length is non-zero on a SOF");
4c98834a EA	458	break;
	459
	460	case 0x8002:
	461	case 0x8006:
	462	case 0xc002:
	463	PDEBUG(D_PACK, "End of frame detected");
	464
	465	/* Complete the last frame (if any) */
76dd272b JFM	466	gspca_frame_add(gspca_dev, LAST_PACKET,
76dd272b JFM	467	NULL, 0);
4c98834a EA	468
4c98834a EA	469	if (chunk_len)
1ddc9f75	470	PERR("Chunk length is non-zero on a EOF");
4c98834a EA	471	break;
	472
	473	case 0x0005:
	474	PDEBUG(D_PACK, "Chunk 0x005 detected");
	475	/* Unknown chunk with 11 bytes of data,
	476	occurs just before end of each frame
	477	in compressed mode */
	478	break;
	479
	480	case 0x0100:
	481	PDEBUG(D_PACK, "Chunk 0x0100 detected");
	482	/* Unknown chunk with 2 bytes of data,
	483	occurs 2-3 times per USB interrupt */
	484	break;
8668d504 HG	485	case 0x42ff:
	486	PDEBUG(D_PACK, "Chunk 0x42ff detected");
	487	/* Special chunk seen sometimes on the ST6422 */
	488	break;
4c98834a	489	default:
8668d504	490	PDEBUG(D_PACK, "Unknown chunk 0x%04x detected", id);
4c98834a EA	491	/* Unknown chunk */
	492	}
	493	data += chunk_len;
	494	len -= chunk_len;
	495	}
	496	}
	497
00ddb707	498	#if IS_ENABLED(CONFIG_INPUT)
0158e98f HG	499	static int sd_int_pkt_scan(struct gspca_dev *gspca_dev,
	500	u8 data, / interrupt packet data */
	501	int len) /* interrupt packet length */
	502	{
	503	int ret = -EINVAL;
	504
13e6c9f4	505	if (len == 1 && (data[0] == 0x80 \|\| data[0] == 0x10)) {
0158e98f HG	506	input_report_key(gspca_dev->input_dev, KEY_CAMERA, 1);
	507	input_sync(gspca_dev->input_dev);
	508	ret = 0;
	509	}
	510
13e6c9f4	511	if (len == 1 && (data[0] == 0x88 \|\| data[0] == 0x11)) {
0158e98f HG	512	input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0);
	513	input_sync(gspca_dev->input_dev);
	514	ret = 0;
	515	}
	516
	517	return ret;
	518	}
	519	#endif
	520
4c98834a EA	521	static int stv06xx_config(struct gspca_dev *gspca_dev,
	522	const struct usb_device_id *id);
	523
	524	/* sub-driver description */
	525	static const struct sd_desc sd_desc = {
	526	.name = MODULE_NAME,
	527	.config = stv06xx_config,
	528	.init = stv06xx_init,
dec9c514	529	.init_controls = stv06xx_init_controls,
4c98834a EA	530	.start = stv06xx_start,
4c98834a EA	531	.stopN = stv06xx_stopN,
0158e98f	532	.pkt_scan = stv06xx_pkt_scan,
c0b33bdc HG	533	.isoc_init = stv06xx_isoc_init,
c0b33bdc HG	534	.isoc_nego = stv06xx_isoc_nego,
00ddb707	535	#if IS_ENABLED(CONFIG_INPUT)
0158e98f HG	536	.int_pkt_scan = sd_int_pkt_scan,
0158e98f HG	537	#endif
4c98834a EA	538	};
	539
	540	/* This function is called at probe time */
	541	static int stv06xx_config(struct gspca_dev *gspca_dev,
	542	const struct usb_device_id *id)
	543	{
	544	struct sd sd = (struct sd ) gspca_dev;
4c98834a EA	545
	546	PDEBUG(D_PROBE, "Configuring camera");
	547
8668d504	548	sd->bridge = id->driver_info;
d67a1ada	549	gspca_dev->sd_desc = &sd_desc;
4c98834a EA	550
	551	if (dump_bridge)
	552	stv06xx_dump_bridge(sd);
	553
8668d504 HG	554	sd->sensor = &stv06xx_sensor_st6422;
	555	if (!sd->sensor->probe(sd))
	556	return 0;
	557
4c98834a EA	558	sd->sensor = &stv06xx_sensor_vv6410;
	559	if (!sd->sensor->probe(sd))
	560	return 0;
	561
	562	sd->sensor = &stv06xx_sensor_hdcs1x00;
	563	if (!sd->sensor->probe(sd))
	564	return 0;
	565
	566	sd->sensor = &stv06xx_sensor_hdcs1020;
	567	if (!sd->sensor->probe(sd))
	568	return 0;
	569
	570	sd->sensor = &stv06xx_sensor_pb0100;
	571	if (!sd->sensor->probe(sd))
	572	return 0;
	573
	574	sd->sensor = NULL;
	575	return -ENODEV;
	576	}
	577
	578
	579
	580	/* -- module initialisation -- */
95c967c1	581	static const struct usb_device_id device_table[] = {
8668d504 HG	582	/* QuickCam Express */
	583	{USB_DEVICE(0x046d, 0x0840), .driver_info = BRIDGE_STV600 },
	584	/* LEGO cam / QuickCam Web */
	585	{USB_DEVICE(0x046d, 0x0850), .driver_info = BRIDGE_STV610 },
	586	/* Dexxa WebCam USB */
	587	{USB_DEVICE(0x046d, 0x0870), .driver_info = BRIDGE_STV602 },
	588	/* QuickCam Messenger */
	589	{USB_DEVICE(0x046D, 0x08F0), .driver_info = BRIDGE_ST6422 },
	590	/* QuickCam Communicate */
	591	{USB_DEVICE(0x046D, 0x08F5), .driver_info = BRIDGE_ST6422 },
	592	/* QuickCam Messenger (new) */
	593	{USB_DEVICE(0x046D, 0x08F6), .driver_info = BRIDGE_ST6422 },
4c98834a EA	594	{}
	595	};
	596	MODULE_DEVICE_TABLE(usb, device_table);
	597
	598	/* -- device connect -- */
	599	static int sd_probe(struct usb_interface *intf,
	600	const struct usb_device_id *id)
	601	{
4c98834a EA	602	return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
	603	THIS_MODULE);
	604	}
	605
8a787b40	606	static void sd_disconnect(struct usb_interface *intf)
4c98834a EA	607	{
	608	struct gspca_dev *gspca_dev = usb_get_intfdata(intf);
	609	struct sd sd = (struct sd ) gspca_dev;
dec9c514	610	void *priv = sd->sensor_priv;
4c98834a EA	611	PDEBUG(D_PROBE, "Disconnecting the stv06xx device");
4c98834a EA	612
dec9c514	613	sd->sensor = NULL;
4c98834a	614	gspca_disconnect(intf);
dec9c514	615	kfree(priv);
4c98834a EA	616	}
	617
	618	static struct usb_driver sd_driver = {
	619	.name = MODULE_NAME,
	620	.id_table = device_table,
	621	.probe = sd_probe,
	622	.disconnect = sd_disconnect,
	623	#ifdef CONFIG_PM
	624	.suspend = gspca_suspend,
	625	.resume = gspca_resume,
dec9c514	626	.reset_resume = gspca_resume,
4c98834a EA	627	#endif
	628	};
	629
ecb3b2b3	630	module_usb_driver(sd_driver);
4c98834a EA	631
	632	module_param(dump_bridge, bool, S_IRUGO \| S_IWUSR);
	633	MODULE_PARM_DESC(dump_bridge, "Dumps all usb bridge registers at startup");
	634
	635	module_param(dump_sensor, bool, S_IRUGO \| S_IWUSR);
	636	MODULE_PARM_DESC(dump_sensor, "Dumps all sensor registers at startup");