[linux-2.6-block.git] / drivers / media / video / gspca / stk014.c

/*
 * Syntek DV4000 (STK014) subdriver
 *
 * Copyright (C) 2008 Jean-Francois Moine (http://moinejf.free.fr)
 *
 * 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
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#define MODULE_NAME "stk014"

#include "gspca.h"
#include "jpeg.h"

MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
MODULE_DESCRIPTION("Syntek DV4000 (STK014) USB Camera Driver");
MODULE_LICENSE("GPL");

/* specific webcam descriptor */
struct sd {
	struct gspca_dev gspca_dev;	/* !! must be the first item */

	unsigned char brightness;
	unsigned char contrast;
	unsigned char colors;
	unsigned char lightfreq;
	u8 quality;
#define QUALITY_MIN 60
#define QUALITY_MAX 95
#define QUALITY_DEF 80

	u8 *jpeg_hdr;
};

/* V4L2 controls supported by the driver */
static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setfreq(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getfreq(struct gspca_dev *gspca_dev, __s32 *val);

static struct ctrl sd_ctrls[] = {
	{
	    {
		.id      = V4L2_CID_BRIGHTNESS,
		.type    = V4L2_CTRL_TYPE_INTEGER,
		.name    = "Brightness",
		.minimum = 0,
		.maximum = 255,
		.step    = 1,
#define BRIGHTNESS_DEF 127
		.default_value = BRIGHTNESS_DEF,
	    },
	    .set = sd_setbrightness,
	    .get = sd_getbrightness,
	},
	{
	    {
		.id      = V4L2_CID_CONTRAST,
		.type    = V4L2_CTRL_TYPE_INTEGER,
		.name    = "Contrast",
		.minimum = 0,
		.maximum = 255,
		.step    = 1,
#define CONTRAST_DEF 127
		.default_value = CONTRAST_DEF,
	    },
	    .set = sd_setcontrast,
	    .get = sd_getcontrast,
	},
	{
	    {
		.id      = V4L2_CID_SATURATION,
		.type    = V4L2_CTRL_TYPE_INTEGER,
		.name    = "Color",
		.minimum = 0,
		.maximum = 255,
		.step    = 1,
#define COLOR_DEF 127
		.default_value = COLOR_DEF,
	    },
	    .set = sd_setcolors,
	    .get = sd_getcolors,
	},
	{
	    {
		.id	 = V4L2_CID_POWER_LINE_FREQUENCY,
		.type    = V4L2_CTRL_TYPE_MENU,
		.name    = "Light frequency filter",
		.minimum = 1,
		.maximum = 2,	/* 0: 0, 1: 50Hz, 2:60Hz */
		.step    = 1,
#define FREQ_DEF 1
		.default_value = FREQ_DEF,
	    },
	    .set = sd_setfreq,
	    .get = sd_getfreq,
	},
};

static const struct v4l2_pix_format vga_mode[] = {
	{320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 320,
		.sizeimage = 320 * 240 * 3 / 8 + 590,
		.colorspace = V4L2_COLORSPACE_JPEG,
		.priv = 1},
	{640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 640,
		.sizeimage = 640 * 480 * 3 / 8 + 590,
		.colorspace = V4L2_COLORSPACE_JPEG,
		.priv = 0},
};

/* -- read a register -- */
static int reg_r(struct gspca_dev *gspca_dev,
			__u16 index)
{
	struct usb_device *dev = gspca_dev->dev;
	int ret;

	ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
			0x00,
			USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			0x00,
			index,
			gspca_dev->usb_buf, 1,
			500);
	if (ret < 0) {
		PDEBUG(D_ERR, "reg_r err %d", ret);
		return ret;
	}
	return gspca_dev->usb_buf[0];
}

/* -- write a register -- */
static int reg_w(struct gspca_dev *gspca_dev,
			__u16 index, __u16 value)
{
	struct usb_device *dev = gspca_dev->dev;
	int ret;

	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
			0x01,
			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			value,
			index,
			NULL,
			0,
			500);
	if (ret < 0)
		PDEBUG(D_ERR, "reg_w err %d", ret);
	return ret;
}

/* -- get a bulk value (4 bytes) -- */
static int rcv_val(struct gspca_dev *gspca_dev,
			int ads)
{
	struct usb_device *dev = gspca_dev->dev;
	int alen, ret;

	reg_w(gspca_dev, 0x634, (ads >> 16) & 0xff);
	reg_w(gspca_dev, 0x635, (ads >> 8) & 0xff);
	reg_w(gspca_dev, 0x636, ads & 0xff);
	reg_w(gspca_dev, 0x637, 0);
	reg_w(gspca_dev, 0x638, 4);	/* len & 0xff */
	reg_w(gspca_dev, 0x639, 0);	/* len >> 8 */
	reg_w(gspca_dev, 0x63a, 0);
	reg_w(gspca_dev, 0x63b, 0);
	reg_w(gspca_dev, 0x630, 5);
	ret = usb_bulk_msg(dev,
			usb_rcvbulkpipe(dev, 0x05),
			gspca_dev->usb_buf,
			4,		/* length */
			&alen,
			500);		/* timeout in milliseconds */
	return ret;
}

/* -- send a bulk value -- */
static int snd_val(struct gspca_dev *gspca_dev,
			int ads,
			unsigned int val)
{
	struct usb_device *dev = gspca_dev->dev;
	int alen, ret;
	__u8 seq = 0;

	if (ads == 0x003f08) {
		ret = reg_r(gspca_dev, 0x0704);
		if (ret < 0)
			goto ko;
		ret = reg_r(gspca_dev, 0x0705);
		if (ret < 0)
			goto ko;
		seq = ret;		/* keep the sequence number */
		ret = reg_r(gspca_dev, 0x0650);
		if (ret < 0)
			goto ko;
		reg_w(gspca_dev, 0x654, seq);
	} else {
		reg_w(gspca_dev, 0x654, (ads >> 16) & 0xff);
	}
	reg_w(gspca_dev, 0x655, (ads >> 8) & 0xff);
	reg_w(gspca_dev, 0x656, ads & 0xff);
	reg_w(gspca_dev, 0x657, 0);
	reg_w(gspca_dev, 0x658, 0x04);	/* size */
	reg_w(gspca_dev, 0x659, 0);
	reg_w(gspca_dev, 0x65a, 0);
	reg_w(gspca_dev, 0x65b, 0);
	reg_w(gspca_dev, 0x650, 5);
	gspca_dev->usb_buf[0] = val >> 24;
	gspca_dev->usb_buf[1] = val >> 16;
	gspca_dev->usb_buf[2] = val >> 8;
	gspca_dev->usb_buf[3] = val;
	ret = usb_bulk_msg(dev,
			usb_sndbulkpipe(dev, 6),
			gspca_dev->usb_buf,
			4,
			&alen,
			500);	/* timeout in milliseconds */
	if (ret < 0)
		goto ko;
	if (ads == 0x003f08) {
		seq += 4;
		seq &= 0x3f;
		reg_w(gspca_dev, 0x705, seq);
	}
	return ret;
ko:
	PDEBUG(D_ERR, "snd_val err %d", ret);
	return ret;
}

/* set a camera parameter */
static int set_par(struct gspca_dev *gspca_dev,
		   int parval)
{
	return snd_val(gspca_dev, 0x003f08, parval);
}

static void setbrightness(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	int parval;

	parval = 0x06000000		/* whiteness */
		+ (sd->brightness << 16);
	set_par(gspca_dev, parval);
}

static void setcontrast(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	int parval;

	parval = 0x07000000		/* contrast */
		+ (sd->contrast << 16);
	set_par(gspca_dev, parval);
}

static void setcolors(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	int parval;

	parval = 0x08000000		/* saturation */
		+ (sd->colors << 16);
	set_par(gspca_dev, parval);
}

static void setfreq(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;

	set_par(gspca_dev, sd->lightfreq == 1
			? 0x33640000		/* 50 Hz */
			: 0x33780000);		/* 60 Hz */
}

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

	gspca_dev->cam.cam_mode = vga_mode;
	gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode);
	sd->brightness = BRIGHTNESS_DEF;
	sd->contrast = CONTRAST_DEF;
	sd->colors = COLOR_DEF;
	sd->lightfreq = FREQ_DEF;
	sd->quality = QUALITY_DEF;
	return 0;
}

/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
	int ret;

	/* check if the device responds */
	usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
	ret = reg_r(gspca_dev, 0x0740);
	if (ret < 0)
		return ret;
	if (ret != 0xff) {
		PDEBUG(D_ERR|D_STREAM, "init reg: 0x%02x", ret);
		return -1;
	}
	return 0;
}

/* -- start the camera -- */
static int sd_start(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	int ret, value;

	/* create the JPEG header */
	sd->jpeg_hdr = kmalloc(JPEG_HDR_SZ, GFP_KERNEL);
	if (!sd->jpeg_hdr)
		return -ENOMEM;
	jpeg_define(sd->jpeg_hdr, gspca_dev->height, gspca_dev->width,
			0x22);		/* JPEG 411 */
	jpeg_set_qual(sd->jpeg_hdr, sd->quality);

	/* work on alternate 1 */
	usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);

	set_par(gspca_dev, 0x10000000);
	set_par(gspca_dev, 0x00000000);
	set_par(gspca_dev, 0x8002e001);
	set_par(gspca_dev, 0x14000000);
	if (gspca_dev->width > 320)
		value = 0x8002e001;		/* 640x480 */
	else
		value = 0x4001f000;		/* 320x240 */
	set_par(gspca_dev, value);
	ret = usb_set_interface(gspca_dev->dev,
					gspca_dev->iface,
					gspca_dev->alt);
	if (ret < 0) {
		PDEBUG(D_ERR|D_STREAM, "set intf %d %d failed",
			gspca_dev->iface, gspca_dev->alt);
		goto out;
	}
	ret = reg_r(gspca_dev, 0x0630);
	if (ret < 0)
		goto out;
	rcv_val(gspca_dev, 0x000020);	/* << (value ff ff ff ff) */
	ret = reg_r(gspca_dev, 0x0650);
	if (ret < 0)
		goto out;
	snd_val(gspca_dev, 0x000020, 0xffffffff);
	reg_w(gspca_dev, 0x0620, 0);
	reg_w(gspca_dev, 0x0630, 0);
	reg_w(gspca_dev, 0x0640, 0);
	reg_w(gspca_dev, 0x0650, 0);
	reg_w(gspca_dev, 0x0660, 0);
	setbrightness(gspca_dev);		/* whiteness */
	setcontrast(gspca_dev);			/* contrast */
	setcolors(gspca_dev);			/* saturation */
	set_par(gspca_dev, 0x09800000);		/* Red ? */
	set_par(gspca_dev, 0x0a800000);		/* Green ? */
	set_par(gspca_dev, 0x0b800000);		/* Blue ? */
	set_par(gspca_dev, 0x0d030000);		/* Gamma ? */
	setfreq(gspca_dev);			/* light frequency */

	/* start the video flow */
	set_par(gspca_dev, 0x01000000);
	set_par(gspca_dev, 0x01000000);
	PDEBUG(D_STREAM, "camera started alt: 0x%02x", gspca_dev->alt);
	return 0;
out:
	PDEBUG(D_ERR|D_STREAM, "camera start err %d", ret);
	return ret;
}

static void sd_stopN(struct gspca_dev *gspca_dev)
{
	struct usb_device *dev = gspca_dev->dev;

	set_par(gspca_dev, 0x02000000);
	set_par(gspca_dev, 0x02000000);
	usb_set_interface(dev, gspca_dev->iface, 1);
	reg_r(gspca_dev, 0x0630);
	rcv_val(gspca_dev, 0x000020);	/* << (value ff ff ff ff) */
	reg_r(gspca_dev, 0x0650);
	snd_val(gspca_dev, 0x000020, 0xffffffff);
	reg_w(gspca_dev, 0x0620, 0);
	reg_w(gspca_dev, 0x0630, 0);
	reg_w(gspca_dev, 0x0640, 0);
	reg_w(gspca_dev, 0x0650, 0);
	reg_w(gspca_dev, 0x0660, 0);
	PDEBUG(D_STREAM, "camera stopped");
}

static void sd_stop0(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;

	kfree(sd->jpeg_hdr);
}

static void sd_pkt_scan(struct gspca_dev *gspca_dev,
			struct gspca_frame *frame,	/* target */
			__u8 *data,			/* isoc packet */
			int len)			/* iso packet length */
{
	struct sd *sd = (struct sd *) gspca_dev;
	static unsigned char ffd9[] = {0xff, 0xd9};

	/* a frame starts with:
	 *	- 0xff 0xfe
	 *	- 0x08 0x00	- length (little endian ?!)
	 *	- 4 bytes = size of whole frame (BE - including header)
	 *	- 0x00 0x0c
	 *	- 0xff 0xd8
	 *	- ..	JPEG image with escape sequences (ff 00)
	 *		(without ending - ff d9)
	 */
	if (data[0] == 0xff && data[1] == 0xfe) {
		frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
					ffd9, 2);

		/* put the JPEG 411 header */
		gspca_frame_add(gspca_dev, FIRST_PACKET, frame,
			sd->jpeg_hdr, JPEG_HDR_SZ);

		/* beginning of the frame */
#define STKHDRSZ 12
		data += STKHDRSZ;
		len -= STKHDRSZ;
	}
	gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
}

static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	sd->brightness = val;
	if (gspca_dev->streaming)
		setbrightness(gspca_dev);
	return 0;
}

static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	*val = sd->brightness;
	return 0;
}

static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	sd->contrast = val;
	if (gspca_dev->streaming)
		setcontrast(gspca_dev);
	return 0;
}

static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	*val = sd->contrast;
	return 0;
}

static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	sd->colors = val;
	if (gspca_dev->streaming)
		setcolors(gspca_dev);
	return 0;
}

static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	*val = sd->colors;
	return 0;
}

static int sd_setfreq(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	sd->lightfreq = val;
	if (gspca_dev->streaming)
		setfreq(gspca_dev);
	return 0;
}

static int sd_getfreq(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	*val = sd->lightfreq;
	return 0;
}

static int sd_querymenu(struct gspca_dev *gspca_dev,
			struct v4l2_querymenu *menu)
{
	switch (menu->id) {
	case V4L2_CID_POWER_LINE_FREQUENCY:
		switch (menu->index) {
		case 1:		/* V4L2_CID_POWER_LINE_FREQUENCY_50HZ */
			strcpy((char *) menu->name, "50 Hz");
			return 0;
		case 2:		/* V4L2_CID_POWER_LINE_FREQUENCY_60HZ */
			strcpy((char *) menu->name, "60 Hz");
			return 0;
		}
		break;
	}
	return -EINVAL;
}

static int sd_set_jcomp(struct gspca_dev *gspca_dev,
			struct v4l2_jpegcompression *jcomp)
{
	struct sd *sd = (struct sd *) gspca_dev;

	if (jcomp->quality < QUALITY_MIN)
		sd->quality = QUALITY_MIN;
	else if (jcomp->quality > QUALITY_MAX)
		sd->quality = QUALITY_MAX;
	else
		sd->quality = jcomp->quality;
	if (gspca_dev->streaming)
		jpeg_set_qual(sd->jpeg_hdr, sd->quality);
	return 0;
}

static int sd_get_jcomp(struct gspca_dev *gspca_dev,
			struct v4l2_jpegcompression *jcomp)
{
	struct sd *sd = (struct sd *) gspca_dev;

	memset(jcomp, 0, sizeof *jcomp);
	jcomp->quality = sd->quality;
	jcomp->jpeg_markers = V4L2_JPEG_MARKER_DHT
			| V4L2_JPEG_MARKER_DQT;
	return 0;
}

/* sub-driver description */
static const struct sd_desc sd_desc = {
	.name = MODULE_NAME,
	.ctrls = sd_ctrls,
	.nctrls = ARRAY_SIZE(sd_ctrls),
	.config = sd_config,
	.init = sd_init,
	.start = sd_start,
	.stopN = sd_stopN,
	.stop0 = sd_stop0,
	.pkt_scan = sd_pkt_scan,
	.querymenu = sd_querymenu,
	.get_jcomp = sd_get_jcomp,
	.set_jcomp = sd_set_jcomp,
};

/* -- module initialisation -- */
static const __devinitdata struct usb_device_id device_table[] = {
	{USB_DEVICE(0x05e1, 0x0893)},
	{}
};
MODULE_DEVICE_TABLE(usb, device_table);

/* -- device connect -- */
static int sd_probe(struct usb_interface *intf,
			const struct usb_device_id *id)
{
	return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
				THIS_MODULE);
}

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

/* -- module insert / remove -- */
static int __init sd_mod_init(void)
{
	int ret;
	ret = usb_register(&sd_driver);
	if (ret < 0)
		return ret;
	info("registered");
	return 0;
}
static void __exit sd_mod_exit(void)
{
	usb_deregister(&sd_driver);
	info("deregistered");
}

module_init(sd_mod_init);
module_exit(sd_mod_exit);
Commit	Line	Data
63eb9546 JFM	1	/*
	2	* Syntek DV4000 (STK014) subdriver
	3	*
d43fa32f	4	* Copyright (C) 2008 Jean-Francois Moine (http://moinejf.free.fr)
63eb9546 JFM	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
63eb9546 JFM	19	*/
	20
	21	#define MODULE_NAME "stk014"
	22
	23	#include "gspca.h"
	24	#include "jpeg.h"
	25
63eb9546 JFM	26	MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
	27	MODULE_DESCRIPTION("Syntek DV4000 (STK014) USB Camera Driver");
	28	MODULE_LICENSE("GPL");
	29
	30	/* specific webcam descriptor */
	31	struct sd {
	32	struct gspca_dev gspca_dev; /* !! must be the first item */
	33
	34	unsigned char brightness;
	35	unsigned char contrast;
	36	unsigned char colors;
6a7eba24	37	unsigned char lightfreq;
71cb2764	38	u8 quality;
77ac0baf JFM	39	#define QUALITY_MIN 60
	40	#define QUALITY_MAX 95
	41	#define QUALITY_DEF 80
71cb2764 JFM	42
71cb2764 JFM	43	u8 *jpeg_hdr;
63eb9546 JFM	44	};
63eb9546 JFM	45
63eb9546 JFM	46	/* V4L2 controls supported by the driver */
	47	static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
	48	static int sd_getbrightness(struct gspca_dev gspca_dev, __s32 val);
	49	static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
	50	static int sd_getcontrast(struct gspca_dev gspca_dev, __s32 val);
	51	static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val);
	52	static int sd_getcolors(struct gspca_dev gspca_dev, __s32 val);
6a7eba24 JFM	53	static int sd_setfreq(struct gspca_dev *gspca_dev, __s32 val);
6a7eba24 JFM	54	static int sd_getfreq(struct gspca_dev gspca_dev, __s32 val);
63eb9546 JFM	55
63eb9546 JFM	56	static struct ctrl sd_ctrls[] = {
63eb9546 JFM	57	{
	58	{
	59	.id = V4L2_CID_BRIGHTNESS,
	60	.type = V4L2_CTRL_TYPE_INTEGER,
	61	.name = "Brightness",
	62	.minimum = 0,
	63	.maximum = 255,
	64	.step = 1,
a5ae2062 JFM	65	#define BRIGHTNESS_DEF 127
a5ae2062 JFM	66	.default_value = BRIGHTNESS_DEF,
63eb9546 JFM	67	},
	68	.set = sd_setbrightness,
	69	.get = sd_getbrightness,
	70	},
63eb9546 JFM	71	{
	72	{
	73	.id = V4L2_CID_CONTRAST,
	74	.type = V4L2_CTRL_TYPE_INTEGER,
	75	.name = "Contrast",
	76	.minimum = 0,
	77	.maximum = 255,
	78	.step = 1,
a5ae2062 JFM	79	#define CONTRAST_DEF 127
a5ae2062 JFM	80	.default_value = CONTRAST_DEF,
63eb9546 JFM	81	},
	82	.set = sd_setcontrast,
	83	.get = sd_getcontrast,
	84	},
63eb9546 JFM	85	{
	86	{
	87	.id = V4L2_CID_SATURATION,
	88	.type = V4L2_CTRL_TYPE_INTEGER,
a5ae2062	89	.name = "Color",
63eb9546 JFM	90	.minimum = 0,
	91	.maximum = 255,
	92	.step = 1,
a5ae2062 JFM	93	#define COLOR_DEF 127
a5ae2062 JFM	94	.default_value = COLOR_DEF,
63eb9546 JFM	95	},
	96	.set = sd_setcolors,
	97	.get = sd_getcolors,
	98	},
6a7eba24 JFM	99	{
	100	{
	101	.id = V4L2_CID_POWER_LINE_FREQUENCY,
	102	.type = V4L2_CTRL_TYPE_MENU,
	103	.name = "Light frequency filter",
	104	.minimum = 1,
	105	.maximum = 2, /* 0: 0, 1: 50Hz, 2:60Hz */
	106	.step = 1,
a5ae2062 JFM	107	#define FREQ_DEF 1
a5ae2062 JFM	108	.default_value = FREQ_DEF,
6a7eba24 JFM	109	},
	110	.set = sd_setfreq,
	111	.get = sd_getfreq,
	112	},
63eb9546 JFM	113	};
63eb9546 JFM	114
cc611b8a	115	static const struct v4l2_pix_format vga_mode[] = {
c2446b3e JFM	116	{320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
	117	.bytesperline = 320,
	118	.sizeimage = 320 * 240 * 3 / 8 + 590,
	119	.colorspace = V4L2_COLORSPACE_JPEG,
	120	.priv = 1},
	121	{640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
	122	.bytesperline = 640,
	123	.sizeimage = 640 * 480 * 3 / 8 + 590,
	124	.colorspace = V4L2_COLORSPACE_JPEG,
	125	.priv = 0},
63eb9546 JFM	126	};
	127
	128	/* -- read a register -- */
6a7eba24	129	static int reg_r(struct gspca_dev *gspca_dev,
739570bb	130	__u16 index)
63eb9546	131	{
63eb9546	132	struct usb_device *dev = gspca_dev->dev;
6a7eba24	133	int ret;
63eb9546 JFM	134
	135	ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
	136	0x00,
	137	USB_DIR_IN \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	138	0x00,
	139	index,
739570bb	140	gspca_dev->usb_buf, 1,
63eb9546	141	500);
739570bb	142	if (ret < 0) {
6a7eba24	143	PDEBUG(D_ERR, "reg_r err %d", ret);
739570bb JFM	144	return ret;
	145	}
	146	return gspca_dev->usb_buf[0];
63eb9546 JFM	147	}
	148
	149	/* -- write a register -- */
6a7eba24	150	static int reg_w(struct gspca_dev *gspca_dev,
63eb9546 JFM	151	__u16 index, __u16 value)
	152	{
	153	struct usb_device *dev = gspca_dev->dev;
	154	int ret;
	155
	156	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
	157	0x01,
	158	USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	159	value,
	160	index,
	161	NULL,
	162	0,
	163	500);
	164	if (ret < 0)
6a7eba24	165	PDEBUG(D_ERR, "reg_w err %d", ret);
63eb9546 JFM	166	return ret;
	167	}
	168
739570bb	169	/* -- get a bulk value (4 bytes) -- */
63eb9546	170	static int rcv_val(struct gspca_dev *gspca_dev,
739570bb	171	int ads)
63eb9546 JFM	172	{
	173	struct usb_device *dev = gspca_dev->dev;
	174	int alen, ret;
63eb9546	175
6a7eba24 JFM	176	reg_w(gspca_dev, 0x634, (ads >> 16) & 0xff);
	177	reg_w(gspca_dev, 0x635, (ads >> 8) & 0xff);
	178	reg_w(gspca_dev, 0x636, ads & 0xff);
	179	reg_w(gspca_dev, 0x637, 0);
739570bb JFM	180	reg_w(gspca_dev, 0x638, 4); /* len & 0xff */
739570bb JFM	181	reg_w(gspca_dev, 0x639, 0); /* len >> 8 */
6a7eba24 JFM	182	reg_w(gspca_dev, 0x63a, 0);
	183	reg_w(gspca_dev, 0x63b, 0);
	184	reg_w(gspca_dev, 0x630, 5);
63eb9546	185	ret = usb_bulk_msg(dev,
50e06dee	186	usb_rcvbulkpipe(dev, 0x05),
739570bb JFM	187	gspca_dev->usb_buf,
739570bb JFM	188	4, /* length */
63eb9546	189	&alen,
739570bb	190	500); /* timeout in milliseconds */
63eb9546 JFM	191	return ret;
	192	}
	193
739570bb	194	/* -- send a bulk value -- */
63eb9546 JFM	195	static int snd_val(struct gspca_dev *gspca_dev,
	196	int ads,
	197	unsigned int val)
	198	{
	199	struct usb_device *dev = gspca_dev->dev;
	200	int alen, ret;
739570bb	201	__u8 seq = 0;
63eb9546 JFM	202
63eb9546 JFM	203	if (ads == 0x003f08) {
739570bb	204	ret = reg_r(gspca_dev, 0x0704);
63eb9546 JFM	205	if (ret < 0)
63eb9546 JFM	206	goto ko;
739570bb	207	ret = reg_r(gspca_dev, 0x0705);
63eb9546 JFM	208	if (ret < 0)
63eb9546 JFM	209	goto ko;
739570bb JFM	210	seq = ret; /* keep the sequence number */
739570bb JFM	211	ret = reg_r(gspca_dev, 0x0650);
63eb9546 JFM	212	if (ret < 0)
63eb9546 JFM	213	goto ko;
6a7eba24	214	reg_w(gspca_dev, 0x654, seq);
739570bb	215	} else {
6a7eba24	216	reg_w(gspca_dev, 0x654, (ads >> 16) & 0xff);
739570bb	217	}
6a7eba24 JFM	218	reg_w(gspca_dev, 0x655, (ads >> 8) & 0xff);
	219	reg_w(gspca_dev, 0x656, ads & 0xff);
	220	reg_w(gspca_dev, 0x657, 0);
	221	reg_w(gspca_dev, 0x658, 0x04); /* size */
	222	reg_w(gspca_dev, 0x659, 0);
	223	reg_w(gspca_dev, 0x65a, 0);
	224	reg_w(gspca_dev, 0x65b, 0);
	225	reg_w(gspca_dev, 0x650, 5);
739570bb JFM	226	gspca_dev->usb_buf[0] = val >> 24;
	227	gspca_dev->usb_buf[1] = val >> 16;
	228	gspca_dev->usb_buf[2] = val >> 8;
	229	gspca_dev->usb_buf[3] = val;
63eb9546 JFM	230	ret = usb_bulk_msg(dev,
63eb9546 JFM	231	usb_sndbulkpipe(dev, 6),
739570bb	232	gspca_dev->usb_buf,
63eb9546 JFM	233	4,
	234	&alen,
	235	500); /* timeout in milliseconds */
	236	if (ret < 0)
	237	goto ko;
	238	if (ads == 0x003f08) {
	239	seq += 4;
	240	seq &= 0x3f;
6a7eba24	241	reg_w(gspca_dev, 0x705, seq);
63eb9546 JFM	242	}
	243	return ret;
	244	ko:
	245	PDEBUG(D_ERR, "snd_val err %d", ret);
	246	return ret;
	247	}
	248
	249	/* set a camera parameter */
	250	static int set_par(struct gspca_dev *gspca_dev,
	251	int parval)
	252	{
	253	return snd_val(gspca_dev, 0x003f08, parval);
	254	}
	255
	256	static void setbrightness(struct gspca_dev *gspca_dev)
	257	{
	258	struct sd sd = (struct sd ) gspca_dev;
	259	int parval;
	260
63eb9546 JFM	261	parval = 0x06000000 /* whiteness */
	262	+ (sd->brightness << 16);
	263	set_par(gspca_dev, parval);
	264	}
	265
	266	static void setcontrast(struct gspca_dev *gspca_dev)
	267	{
	268	struct sd sd = (struct sd ) gspca_dev;
	269	int parval;
	270
63eb9546 JFM	271	parval = 0x07000000 /* contrast */
	272	+ (sd->contrast << 16);
	273	set_par(gspca_dev, parval);
	274	}
	275
	276	static void setcolors(struct gspca_dev *gspca_dev)
	277	{
	278	struct sd sd = (struct sd ) gspca_dev;
	279	int parval;
	280
63eb9546 JFM	281	parval = 0x08000000 /* saturation */
	282	+ (sd->colors << 16);
	283	set_par(gspca_dev, parval);
	284	}
	285
6a7eba24 JFM	286	static void setfreq(struct gspca_dev *gspca_dev)
	287	{
	288	struct sd sd = (struct sd ) gspca_dev;
	289
	290	set_par(gspca_dev, sd->lightfreq == 1
	291	? 0x33640000 /* 50 Hz */
	292	: 0x33780000); /* 60 Hz */
	293	}
	294
63eb9546 JFM	295	/* this function is called at probe time */
	296	static int sd_config(struct gspca_dev *gspca_dev,
	297	const struct usb_device_id *id)
	298	{
	299	struct sd sd = (struct sd ) gspca_dev;
63eb9546	300
63eb9546	301	gspca_dev->cam.cam_mode = vga_mode;
739570bb	302	gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode);
a5ae2062 JFM	303	sd->brightness = BRIGHTNESS_DEF;
	304	sd->contrast = CONTRAST_DEF;
	305	sd->colors = COLOR_DEF;
	306	sd->lightfreq = FREQ_DEF;
77ac0baf	307	sd->quality = QUALITY_DEF;
63eb9546 JFM	308	return 0;
	309	}
	310
012d6b02 JFM	311	/* this function is called at probe and resume time */
012d6b02 JFM	312	static int sd_init(struct gspca_dev *gspca_dev)
63eb9546	313	{
63eb9546 JFM	314	int ret;
	315
	316	/* check if the device responds */
	317	usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
739570bb	318	ret = reg_r(gspca_dev, 0x0740);
63eb9546 JFM	319	if (ret < 0)
63eb9546 JFM	320	return ret;
739570bb JFM	321	if (ret != 0xff) {
739570bb JFM	322	PDEBUG(D_ERR\|D_STREAM, "init reg: 0x%02x", ret);
63eb9546 JFM	323	return -1;
	324	}
	325	return 0;
	326	}
	327
	328	/* -- start the camera -- */
72ab97ce	329	static int sd_start(struct gspca_dev *gspca_dev)
63eb9546	330	{
71cb2764	331	struct sd sd = (struct sd ) gspca_dev;
63eb9546 JFM	332	int ret, value;
63eb9546 JFM	333
71cb2764 JFM	334	/* create the JPEG header */
71cb2764 JFM	335	sd->jpeg_hdr = kmalloc(JPEG_HDR_SZ, GFP_KERNEL);
3eb0237d JL	336	if (!sd->jpeg_hdr)
3eb0237d JL	337	return -ENOMEM;
71cb2764 JFM	338	jpeg_define(sd->jpeg_hdr, gspca_dev->height, gspca_dev->width,
	339	0x22); /* JPEG 411 */
	340	jpeg_set_qual(sd->jpeg_hdr, sd->quality);
	341
63eb9546 JFM	342	/* work on alternate 1 */
	343	usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
	344
	345	set_par(gspca_dev, 0x10000000);
	346	set_par(gspca_dev, 0x00000000);
	347	set_par(gspca_dev, 0x8002e001);
	348	set_par(gspca_dev, 0x14000000);
	349	if (gspca_dev->width > 320)
	350	value = 0x8002e001; /* 640x480 */
	351	else
	352	value = 0x4001f000; /* 320x240 */
	353	set_par(gspca_dev, value);
	354	ret = usb_set_interface(gspca_dev->dev,
	355	gspca_dev->iface,
	356	gspca_dev->alt);
6a7eba24 JFM	357	if (ret < 0) {
	358	PDEBUG(D_ERR\|D_STREAM, "set intf %d %d failed",
	359	gspca_dev->iface, gspca_dev->alt);
63eb9546	360	goto out;
6a7eba24	361	}
739570bb	362	ret = reg_r(gspca_dev, 0x0630);
63eb9546 JFM	363	if (ret < 0)
63eb9546 JFM	364	goto out;
739570bb JFM	365	rcv_val(gspca_dev, 0x000020); /* << (value ff ff ff ff) */
739570bb JFM	366	ret = reg_r(gspca_dev, 0x0650);
63eb9546 JFM	367	if (ret < 0)
	368	goto out;
	369	snd_val(gspca_dev, 0x000020, 0xffffffff);
6a7eba24 JFM	370	reg_w(gspca_dev, 0x0620, 0);
	371	reg_w(gspca_dev, 0x0630, 0);
	372	reg_w(gspca_dev, 0x0640, 0);
	373	reg_w(gspca_dev, 0x0650, 0);
	374	reg_w(gspca_dev, 0x0660, 0);
63eb9546 JFM	375	setbrightness(gspca_dev); /* whiteness */
	376	setcontrast(gspca_dev); /* contrast */
	377	setcolors(gspca_dev); /* saturation */
	378	set_par(gspca_dev, 0x09800000); /* Red ? */
	379	set_par(gspca_dev, 0x0a800000); /* Green ? */
	380	set_par(gspca_dev, 0x0b800000); /* Blue ? */
	381	set_par(gspca_dev, 0x0d030000); /* Gamma ? */
6a7eba24	382	setfreq(gspca_dev); /* light frequency */
63eb9546 JFM	383
	384	/* start the video flow */
	385	set_par(gspca_dev, 0x01000000);
	386	set_par(gspca_dev, 0x01000000);
	387	PDEBUG(D_STREAM, "camera started alt: 0x%02x", gspca_dev->alt);
72ab97ce	388	return 0;
63eb9546 JFM	389	out:
63eb9546 JFM	390	PDEBUG(D_ERR\|D_STREAM, "camera start err %d", ret);
72ab97ce	391	return ret;
63eb9546 JFM	392	}
	393
	394	static void sd_stopN(struct gspca_dev *gspca_dev)
	395	{
	396	struct usb_device *dev = gspca_dev->dev;
63eb9546 JFM	397
	398	set_par(gspca_dev, 0x02000000);
	399	set_par(gspca_dev, 0x02000000);
	400	usb_set_interface(dev, gspca_dev->iface, 1);
739570bb JFM	401	reg_r(gspca_dev, 0x0630);
	402	rcv_val(gspca_dev, 0x000020); /* << (value ff ff ff ff) */
	403	reg_r(gspca_dev, 0x0650);
63eb9546	404	snd_val(gspca_dev, 0x000020, 0xffffffff);
6a7eba24 JFM	405	reg_w(gspca_dev, 0x0620, 0);
	406	reg_w(gspca_dev, 0x0630, 0);
	407	reg_w(gspca_dev, 0x0640, 0);
	408	reg_w(gspca_dev, 0x0650, 0);
	409	reg_w(gspca_dev, 0x0660, 0);
63eb9546 JFM	410	PDEBUG(D_STREAM, "camera stopped");
	411	}
	412
71cb2764 JFM	413	static void sd_stop0(struct gspca_dev *gspca_dev)
	414	{
	415	struct sd sd = (struct sd ) gspca_dev;
	416
	417	kfree(sd->jpeg_hdr);
	418	}
	419
63eb9546 JFM	420	static void sd_pkt_scan(struct gspca_dev *gspca_dev,
63eb9546 JFM	421	struct gspca_frame frame, / target */
a5ae2062	422	__u8 data, / isoc packet */
63eb9546 JFM	423	int len) /* iso packet length */
63eb9546 JFM	424	{
71cb2764	425	struct sd sd = (struct sd ) gspca_dev;
4aa0d037	426	static unsigned char ffd9[] = {0xff, 0xd9};
63eb9546 JFM	427
	428	/* a frame starts with:
	429	* - 0xff 0xfe
d43fa32f JFM	430	* - 0x08 0x00 - length (little endian ?!)
d43fa32f JFM	431	* - 4 bytes = size of whole frame (BE - including header)
63eb9546 JFM	432	* - 0x00 0x0c
	433	* - 0xff 0xd8
	434	* - .. JPEG image with escape sequences (ff 00)
d43fa32f	435	* (without ending - ff d9)
63eb9546 JFM	436	*/
63eb9546 JFM	437	if (data[0] == 0xff && data[1] == 0xfe) {
d43fa32f JFM	438	frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
d43fa32f JFM	439	ffd9, 2);
63eb9546	440
d43fa32f	441	/* put the JPEG 411 header */
71cb2764 JFM	442	gspca_frame_add(gspca_dev, FIRST_PACKET, frame,
71cb2764 JFM	443	sd->jpeg_hdr, JPEG_HDR_SZ);
63eb9546 JFM	444
	445	/* beginning of the frame */
	446	#define STKHDRSZ 12
8843765e JFM	447	data += STKHDRSZ;
8843765e JFM	448	len -= STKHDRSZ;
63eb9546	449	}
63eb9546	450	gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
63eb9546 JFM	451	}
	452
	453	static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
	454	{
	455	struct sd sd = (struct sd ) gspca_dev;
	456
	457	sd->brightness = val;
	458	if (gspca_dev->streaming)
	459	setbrightness(gspca_dev);
	460	return 0;
	461	}
	462
	463	static int sd_getbrightness(struct gspca_dev gspca_dev, __s32 val)
	464	{
	465	struct sd sd = (struct sd ) gspca_dev;
	466
	467	*val = sd->brightness;
	468	return 0;
	469	}
	470
	471	static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
	472	{
	473	struct sd sd = (struct sd ) gspca_dev;
	474
	475	sd->contrast = val;
	476	if (gspca_dev->streaming)
	477	setcontrast(gspca_dev);
	478	return 0;
	479	}
	480
	481	static int sd_getcontrast(struct gspca_dev gspca_dev, __s32 val)
	482	{
	483	struct sd sd = (struct sd ) gspca_dev;
	484
	485	*val = sd->contrast;
	486	return 0;
	487	}
	488
	489	static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val)
	490	{
	491	struct sd sd = (struct sd ) gspca_dev;
	492
	493	sd->colors = val;
	494	if (gspca_dev->streaming)
	495	setcolors(gspca_dev);
	496	return 0;
	497	}
	498
	499	static int sd_getcolors(struct gspca_dev gspca_dev, __s32 val)
	500	{
	501	struct sd sd = (struct sd ) gspca_dev;
	502
	503	*val = sd->colors;
	504	return 0;
	505	}
	506
6a7eba24 JFM	507	static int sd_setfreq(struct gspca_dev *gspca_dev, __s32 val)
	508	{
	509	struct sd sd = (struct sd ) gspca_dev;
	510
	511	sd->lightfreq = val;
	512	if (gspca_dev->streaming)
	513	setfreq(gspca_dev);
	514	return 0;
	515	}
	516
	517	static int sd_getfreq(struct gspca_dev gspca_dev, __s32 val)
	518	{
	519	struct sd sd = (struct sd ) gspca_dev;
	520
	521	*val = sd->lightfreq;
	522	return 0;
	523	}
	524
	525	static int sd_querymenu(struct gspca_dev *gspca_dev,
	526	struct v4l2_querymenu *menu)
	527	{
	528	switch (menu->id) {
	529	case V4L2_CID_POWER_LINE_FREQUENCY:
	530	switch (menu->index) {
	531	case 1: /* V4L2_CID_POWER_LINE_FREQUENCY_50HZ */
a5ae2062	532	strcpy((char *) menu->name, "50 Hz");
6a7eba24 JFM	533	return 0;
6a7eba24 JFM	534	case 2: /* V4L2_CID_POWER_LINE_FREQUENCY_60HZ */
a5ae2062	535	strcpy((char *) menu->name, "60 Hz");
6a7eba24 JFM	536	return 0;
	537	}
	538	break;
	539	}
	540	return -EINVAL;
	541	}
	542
77ac0baf JFM	543	static int sd_set_jcomp(struct gspca_dev *gspca_dev,
	544	struct v4l2_jpegcompression *jcomp)
	545	{
	546	struct sd sd = (struct sd ) gspca_dev;
	547
	548	if (jcomp->quality < QUALITY_MIN)
	549	sd->quality = QUALITY_MIN;
	550	else if (jcomp->quality > QUALITY_MAX)
	551	sd->quality = QUALITY_MAX;
	552	else
	553	sd->quality = jcomp->quality;
	554	if (gspca_dev->streaming)
	555	jpeg_set_qual(sd->jpeg_hdr, sd->quality);
	556	return 0;
	557	}
	558
	559	static int sd_get_jcomp(struct gspca_dev *gspca_dev,
	560	struct v4l2_jpegcompression *jcomp)
	561	{
	562	struct sd sd = (struct sd ) gspca_dev;
	563
	564	memset(jcomp, 0, sizeof *jcomp);
	565	jcomp->quality = sd->quality;
	566	jcomp->jpeg_markers = V4L2_JPEG_MARKER_DHT
	567	\| V4L2_JPEG_MARKER_DQT;
	568	return 0;
	569	}
	570
63eb9546	571	/* sub-driver description */
739570bb	572	static const struct sd_desc sd_desc = {
63eb9546 JFM	573	.name = MODULE_NAME,
63eb9546 JFM	574	.ctrls = sd_ctrls,
739570bb	575	.nctrls = ARRAY_SIZE(sd_ctrls),
63eb9546	576	.config = sd_config,
012d6b02	577	.init = sd_init,
63eb9546 JFM	578	.start = sd_start,
63eb9546 JFM	579	.stopN = sd_stopN,
71cb2764	580	.stop0 = sd_stop0,
63eb9546	581	.pkt_scan = sd_pkt_scan,
6a7eba24	582	.querymenu = sd_querymenu,
77ac0baf JFM	583	.get_jcomp = sd_get_jcomp,
77ac0baf JFM	584	.set_jcomp = sd_set_jcomp,
63eb9546 JFM	585	};
	586
	587	/* -- module initialisation -- */
739570bb	588	static const __devinitdata struct usb_device_id device_table[] = {
9d64fdb1	589	{USB_DEVICE(0x05e1, 0x0893)},
63eb9546 JFM	590	{}
	591	};
	592	MODULE_DEVICE_TABLE(usb, device_table);
	593
	594	/* -- device connect -- */
	595	static int sd_probe(struct usb_interface *intf,
	596	const struct usb_device_id *id)
	597	{
d43fa32f JFM	598	return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
d43fa32f JFM	599	THIS_MODULE);
63eb9546 JFM	600	}
	601
	602	static struct usb_driver sd_driver = {
	603	.name = MODULE_NAME,
	604	.id_table = device_table,
	605	.probe = sd_probe,
	606	.disconnect = gspca_disconnect,
6a709749 JFM	607	#ifdef CONFIG_PM
	608	.suspend = gspca_suspend,
	609	.resume = gspca_resume,
	610	#endif
63eb9546 JFM	611	};
	612
	613	/* -- module insert / remove -- */
	614	static int __init sd_mod_init(void)
	615	{
f69e9529 AK	616	int ret;
	617	ret = usb_register(&sd_driver);
	618	if (ret < 0)
e6b14849	619	return ret;
10b0e96e	620	info("registered");
63eb9546 JFM	621	return 0;
	622	}
	623	static void __exit sd_mod_exit(void)
	624	{
	625	usb_deregister(&sd_driver);
	626	info("deregistered");
	627	}
	628
	629	module_init(sd_mod_init);
	630	module_exit(sd_mod_exit);