[mirror_ubuntu-artful-kernel.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"

#define DRIVER_VERSION_NUMBER	KERNEL_VERSION(2, 1, 4)
static const char version[] = "2.1.4";

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;
};

/* global parameters */
static int sd_quant = 7;		/* <= 4 KO - 7: good (enough!) */

/* 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 struct cam_mode vga_mode[] = {
	{V4L2_PIX_FMT_JPEG, 320, 240},
	{V4L2_PIX_FMT_JPEG, 640, 480},
};

/* -- read a register -- */
static int reg_r(struct gspca_dev *gspca_dev,
			__u16 index, __u8 *buf)
{
	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,
			buf, 1,
			500);
	if (ret < 0)
		PDEBUG(D_ERR, "reg_r err %d", ret);
	return ret;
}

/* -- 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 value -- */
static int rcv_val(struct gspca_dev *gspca_dev,
			int ads,
			int len)
{
	struct usb_device *dev = gspca_dev->dev;
	int alen, ret;
	unsigned char bulk_buf[4];

	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, len & 0xff);
	reg_w(gspca_dev, 0x639, len >> 8);
	reg_w(gspca_dev, 0x63a, 0);
	reg_w(gspca_dev, 0x63b, 0);
	reg_w(gspca_dev, 0x630, 5);
	if (len > sizeof bulk_buf)
		return -1;
	ret = usb_bulk_msg(dev,
			usb_rcvbulkpipe(dev, 5),
			bulk_buf,
			len,
			&alen,
			500);	/* timeout in milliseconds */
	return ret;
}

/* -- send a 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 value, seq;
	unsigned char bulk_buf[4];

	if (ads == 0x003f08) {
		ret = reg_r(gspca_dev, 0x0704, &value);
		if (ret < 0)
			goto ko;
		ret = reg_r(gspca_dev, 0x0705, &seq);
		if (ret < 0)
			goto ko;
		ret = reg_r(gspca_dev, 0x0650, &value);
		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);
	bulk_buf[0] = (val >> 24) & 0xff;
	bulk_buf[1] = (val >> 16) & 0xff;
	bulk_buf[2] = (val >> 8) & 0xff;
	bulk_buf[3] = val & 0xff;
	ret = usb_bulk_msg(dev,
			usb_sndbulkpipe(dev, 6),
			bulk_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;
	struct cam *cam = &gspca_dev->cam;

	cam->dev_name = (char *) id->driver_info;
	cam->epaddr = 0x02;
	gspca_dev->cam.cam_mode = vga_mode;
	gspca_dev->cam.nmodes = sizeof vga_mode / sizeof vga_mode[0];
	sd->brightness = BRIGHTNESS_DEF;
	sd->contrast = CONTRAST_DEF;
	sd->colors = COLOR_DEF;
	sd->lightfreq = FREQ_DEF;
	return 0;
}

/* this function is called at open time */
static int sd_open(struct gspca_dev *gspca_dev)
{
	__u8 value;
	int ret;

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

/* -- start the camera -- */
static void sd_start(struct gspca_dev *gspca_dev)
{
	__u8 dum;
	int ret, value;

	/* 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, &dum);
	if (ret < 0)
		goto out;
	rcv_val(gspca_dev, 0x000020, 4);	/* << (value ff ff ff ff) */
	ret = reg_r(gspca_dev, 0x0650, &dum);
	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;
out:
	PDEBUG(D_ERR|D_STREAM, "camera start err %d", ret);
}

static void sd_stopN(struct gspca_dev *gspca_dev)
{
	struct usb_device *dev = gspca_dev->dev;
	__u8 value;

	set_par(gspca_dev, 0x02000000);
	set_par(gspca_dev, 0x02000000);
	usb_set_interface(dev, gspca_dev->iface, 1);
	reg_r(gspca_dev, 0x0630, &value);
	rcv_val(gspca_dev, 0x000020, 4);	/* << (value ff ff ff ff) */
	reg_r(gspca_dev, 0x0650, &value);
	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)
{
}

static void sd_close(struct gspca_dev *gspca_dev)
{
}

static void sd_pkt_scan(struct gspca_dev *gspca_dev,
			struct gspca_frame *frame,	/* target */
			__u8 *data,			/* isoc packet */
			int len)			/* iso packet length */
{
	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 */
		jpeg_put_header(gspca_dev, frame, sd_quant, 0x22);

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

/* sub-driver description */
static struct sd_desc sd_desc = {
	.name = MODULE_NAME,
	.ctrls = sd_ctrls,
	.nctrls = sizeof sd_ctrls / sizeof sd_ctrls[0],
	.config = sd_config,
	.open = sd_open,
	.start = sd_start,
	.stopN = sd_stopN,
	.stop0 = sd_stop0,
	.close = sd_close,
	.pkt_scan = sd_pkt_scan,
	.querymenu = sd_querymenu,
};

/* -- module initialisation -- */
#define DVNM(name) .driver_info = (kernel_ulong_t) name
static __devinitdata struct usb_device_id device_table[] = {
	{USB_DEVICE(0x05e1, 0x0893), DVNM("Syntek DV4000")},
	{}
};
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,
};

/* -- module insert / remove -- */
static int __init sd_mod_init(void)
{
	if (usb_register(&sd_driver) < 0)
		return -1;
	info("v%s registered", version);
	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);

module_param_named(quant, sd_quant, int, 0644);
MODULE_PARM_DESC(quant, "Quantization index (0..8)");
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
a5ae2062 JFM	26	#define DRIVER_VERSION_NUMBER KERNEL_VERSION(2, 1, 4)
a5ae2062 JFM	27	static const char version[] = "2.1.4";
63eb9546 JFM	28
	29	MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
	30	MODULE_DESCRIPTION("Syntek DV4000 (STK014) USB Camera Driver");
	31	MODULE_LICENSE("GPL");
	32
	33	/* specific webcam descriptor */
	34	struct sd {
	35	struct gspca_dev gspca_dev; /* !! must be the first item */
	36
	37	unsigned char brightness;
	38	unsigned char contrast;
	39	unsigned char colors;
6a7eba24	40	unsigned char lightfreq;
63eb9546 JFM	41	};
	42
	43	/* global parameters */
63eb9546 JFM	44	static int sd_quant = 7; /* <= 4 KO - 7: good (enough!) */
	45
	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	};
	114
	115	static struct cam_mode vga_mode[] = {
	116	{V4L2_PIX_FMT_JPEG, 320, 240},
	117	{V4L2_PIX_FMT_JPEG, 640, 480},
	118	};
	119
	120	/* -- read a register -- */
6a7eba24	121	static int reg_r(struct gspca_dev *gspca_dev,
63eb9546 JFM	122	__u16 index, __u8 *buf)
63eb9546 JFM	123	{
63eb9546	124	struct usb_device *dev = gspca_dev->dev;
6a7eba24	125	int ret;
63eb9546 JFM	126
	127	ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
	128	0x00,
	129	USB_DIR_IN \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	130	0x00,
	131	index,
	132	buf, 1,
	133	500);
	134	if (ret < 0)
6a7eba24	135	PDEBUG(D_ERR, "reg_r err %d", ret);
63eb9546 JFM	136	return ret;
	137	}
	138
	139	/* -- write a register -- */
6a7eba24	140	static int reg_w(struct gspca_dev *gspca_dev,
63eb9546 JFM	141	__u16 index, __u16 value)
	142	{
	143	struct usb_device *dev = gspca_dev->dev;
	144	int ret;
	145
	146	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
	147	0x01,
	148	USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	149	value,
	150	index,
	151	NULL,
	152	0,
	153	500);
	154	if (ret < 0)
6a7eba24	155	PDEBUG(D_ERR, "reg_w err %d", ret);
63eb9546 JFM	156	return ret;
	157	}
	158
	159	/* -- get a value -- */
	160	static int rcv_val(struct gspca_dev *gspca_dev,
	161	int ads,
	162	int len)
	163	{
	164	struct usb_device *dev = gspca_dev->dev;
	165	int alen, ret;
	166	unsigned char bulk_buf[4];
	167
6a7eba24 JFM	168	reg_w(gspca_dev, 0x634, (ads >> 16) & 0xff);
	169	reg_w(gspca_dev, 0x635, (ads >> 8) & 0xff);
	170	reg_w(gspca_dev, 0x636, ads & 0xff);
	171	reg_w(gspca_dev, 0x637, 0);
	172	reg_w(gspca_dev, 0x638, len & 0xff);
	173	reg_w(gspca_dev, 0x639, len >> 8);
	174	reg_w(gspca_dev, 0x63a, 0);
	175	reg_w(gspca_dev, 0x63b, 0);
	176	reg_w(gspca_dev, 0x630, 5);
63eb9546 JFM	177	if (len > sizeof bulk_buf)
	178	return -1;
	179	ret = usb_bulk_msg(dev,
	180	usb_rcvbulkpipe(dev, 5),
	181	bulk_buf,
	182	len,
	183	&alen,
	184	500); /* timeout in milliseconds */
	185	return ret;
	186	}
	187
	188	/* -- send a value -- */
	189	static int snd_val(struct gspca_dev *gspca_dev,
	190	int ads,
	191	unsigned int val)
	192	{
	193	struct usb_device *dev = gspca_dev->dev;
	194	int alen, ret;
	195	__u8 value, seq;
	196	unsigned char bulk_buf[4];
	197
	198	if (ads == 0x003f08) {
6a7eba24	199	ret = reg_r(gspca_dev, 0x0704, &value);
63eb9546 JFM	200	if (ret < 0)
63eb9546 JFM	201	goto ko;
6a7eba24	202	ret = reg_r(gspca_dev, 0x0705, &seq);
63eb9546 JFM	203	if (ret < 0)
63eb9546 JFM	204	goto ko;
6a7eba24	205	ret = reg_r(gspca_dev, 0x0650, &value);
63eb9546 JFM	206	if (ret < 0)
63eb9546 JFM	207	goto ko;
6a7eba24	208	reg_w(gspca_dev, 0x654, seq);
63eb9546	209	} else
6a7eba24 JFM	210	reg_w(gspca_dev, 0x654, (ads >> 16) & 0xff);
	211	reg_w(gspca_dev, 0x655, (ads >> 8) & 0xff);
	212	reg_w(gspca_dev, 0x656, ads & 0xff);
	213	reg_w(gspca_dev, 0x657, 0);
	214	reg_w(gspca_dev, 0x658, 0x04); /* size */
	215	reg_w(gspca_dev, 0x659, 0);
	216	reg_w(gspca_dev, 0x65a, 0);
	217	reg_w(gspca_dev, 0x65b, 0);
	218	reg_w(gspca_dev, 0x650, 5);
63eb9546 JFM	219	bulk_buf[0] = (val >> 24) & 0xff;
	220	bulk_buf[1] = (val >> 16) & 0xff;
	221	bulk_buf[2] = (val >> 8) & 0xff;
	222	bulk_buf[3] = val & 0xff;
	223	ret = usb_bulk_msg(dev,
	224	usb_sndbulkpipe(dev, 6),
	225	bulk_buf,
	226	4,
	227	&alen,
	228	500); /* timeout in milliseconds */
	229	if (ret < 0)
	230	goto ko;
	231	if (ads == 0x003f08) {
	232	seq += 4;
	233	seq &= 0x3f;
6a7eba24	234	reg_w(gspca_dev, 0x705, seq);
63eb9546 JFM	235	}
	236	return ret;
	237	ko:
	238	PDEBUG(D_ERR, "snd_val err %d", ret);
	239	return ret;
	240	}
	241
	242	/* set a camera parameter */
	243	static int set_par(struct gspca_dev *gspca_dev,
	244	int parval)
	245	{
	246	return snd_val(gspca_dev, 0x003f08, parval);
	247	}
	248
	249	static void setbrightness(struct gspca_dev *gspca_dev)
	250	{
	251	struct sd sd = (struct sd ) gspca_dev;
	252	int parval;
	253
63eb9546 JFM	254	parval = 0x06000000 /* whiteness */
	255	+ (sd->brightness << 16);
	256	set_par(gspca_dev, parval);
	257	}
	258
	259	static void setcontrast(struct gspca_dev *gspca_dev)
	260	{
	261	struct sd sd = (struct sd ) gspca_dev;
	262	int parval;
	263
63eb9546 JFM	264	parval = 0x07000000 /* contrast */
	265	+ (sd->contrast << 16);
	266	set_par(gspca_dev, parval);
	267	}
	268
	269	static void setcolors(struct gspca_dev *gspca_dev)
	270	{
	271	struct sd sd = (struct sd ) gspca_dev;
	272	int parval;
	273
63eb9546 JFM	274	parval = 0x08000000 /* saturation */
	275	+ (sd->colors << 16);
	276	set_par(gspca_dev, parval);
	277	}
	278
6a7eba24 JFM	279	static void setfreq(struct gspca_dev *gspca_dev)
	280	{
	281	struct sd sd = (struct sd ) gspca_dev;
	282
	283	set_par(gspca_dev, sd->lightfreq == 1
	284	? 0x33640000 /* 50 Hz */
	285	: 0x33780000); /* 60 Hz */
	286	}
	287
63eb9546 JFM	288	/* this function is called at probe time */
	289	static int sd_config(struct gspca_dev *gspca_dev,
	290	const struct usb_device_id *id)
	291	{
	292	struct sd sd = (struct sd ) gspca_dev;
	293	struct cam *cam = &gspca_dev->cam;
	294
	295	cam->dev_name = (char *) id->driver_info;
	296	cam->epaddr = 0x02;
	297	gspca_dev->cam.cam_mode = vga_mode;
	298	gspca_dev->cam.nmodes = sizeof vga_mode / sizeof vga_mode[0];
a5ae2062 JFM	299	sd->brightness = BRIGHTNESS_DEF;
	300	sd->contrast = CONTRAST_DEF;
	301	sd->colors = COLOR_DEF;
	302	sd->lightfreq = FREQ_DEF;
63eb9546 JFM	303	return 0;
	304	}
	305
	306	/* this function is called at open time */
	307	static int sd_open(struct gspca_dev *gspca_dev)
	308	{
	309	__u8 value;
	310	int ret;
	311
	312	/* check if the device responds */
	313	usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
6a7eba24	314	ret = reg_r(gspca_dev, 0x0740, &value);
63eb9546 JFM	315	if (ret < 0)
	316	return ret;
	317	if (value != 0xff) {
	318	PDEBUG(D_ERR\|D_STREAM, "init reg: 0x%02x", value);
	319	return -1;
	320	}
	321	return 0;
	322	}
	323
	324	/* -- start the camera -- */
	325	static void sd_start(struct gspca_dev *gspca_dev)
	326	{
	327	__u8 dum;
	328	int ret, value;
	329
	330	/* work on alternate 1 */
	331	usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
	332
	333	set_par(gspca_dev, 0x10000000);
	334	set_par(gspca_dev, 0x00000000);
	335	set_par(gspca_dev, 0x8002e001);
	336	set_par(gspca_dev, 0x14000000);
	337	if (gspca_dev->width > 320)
	338	value = 0x8002e001; /* 640x480 */
	339	else
	340	value = 0x4001f000; /* 320x240 */
	341	set_par(gspca_dev, value);
	342	ret = usb_set_interface(gspca_dev->dev,
	343	gspca_dev->iface,
	344	gspca_dev->alt);
6a7eba24 JFM	345	if (ret < 0) {
	346	PDEBUG(D_ERR\|D_STREAM, "set intf %d %d failed",
	347	gspca_dev->iface, gspca_dev->alt);
63eb9546	348	goto out;
6a7eba24 JFM	349	}
6a7eba24 JFM	350	ret = reg_r(gspca_dev, 0x0630, &dum);
63eb9546 JFM	351	if (ret < 0)
	352	goto out;
	353	rcv_val(gspca_dev, 0x000020, 4); /* << (value ff ff ff ff) */
6a7eba24	354	ret = reg_r(gspca_dev, 0x0650, &dum);
63eb9546 JFM	355	if (ret < 0)
	356	goto out;
	357	snd_val(gspca_dev, 0x000020, 0xffffffff);
6a7eba24 JFM	358	reg_w(gspca_dev, 0x0620, 0);
	359	reg_w(gspca_dev, 0x0630, 0);
	360	reg_w(gspca_dev, 0x0640, 0);
	361	reg_w(gspca_dev, 0x0650, 0);
	362	reg_w(gspca_dev, 0x0660, 0);
63eb9546 JFM	363	setbrightness(gspca_dev); /* whiteness */
	364	setcontrast(gspca_dev); /* contrast */
	365	setcolors(gspca_dev); /* saturation */
	366	set_par(gspca_dev, 0x09800000); /* Red ? */
	367	set_par(gspca_dev, 0x0a800000); /* Green ? */
	368	set_par(gspca_dev, 0x0b800000); /* Blue ? */
	369	set_par(gspca_dev, 0x0d030000); /* Gamma ? */
6a7eba24	370	setfreq(gspca_dev); /* light frequency */
63eb9546 JFM	371
	372	/* start the video flow */
	373	set_par(gspca_dev, 0x01000000);
	374	set_par(gspca_dev, 0x01000000);
	375	PDEBUG(D_STREAM, "camera started alt: 0x%02x", gspca_dev->alt);
	376	return;
	377	out:
	378	PDEBUG(D_ERR\|D_STREAM, "camera start err %d", ret);
	379	}
	380
	381	static void sd_stopN(struct gspca_dev *gspca_dev)
	382	{
	383	struct usb_device *dev = gspca_dev->dev;
	384	__u8 value;
	385
	386	set_par(gspca_dev, 0x02000000);
	387	set_par(gspca_dev, 0x02000000);
	388	usb_set_interface(dev, gspca_dev->iface, 1);
6a7eba24	389	reg_r(gspca_dev, 0x0630, &value);
63eb9546	390	rcv_val(gspca_dev, 0x000020, 4); /* << (value ff ff ff ff) */
6a7eba24	391	reg_r(gspca_dev, 0x0650, &value);
63eb9546	392	snd_val(gspca_dev, 0x000020, 0xffffffff);
6a7eba24 JFM	393	reg_w(gspca_dev, 0x0620, 0);
	394	reg_w(gspca_dev, 0x0630, 0);
	395	reg_w(gspca_dev, 0x0640, 0);
	396	reg_w(gspca_dev, 0x0650, 0);
	397	reg_w(gspca_dev, 0x0660, 0);
63eb9546 JFM	398	PDEBUG(D_STREAM, "camera stopped");
	399	}
	400
	401	static void sd_stop0(struct gspca_dev *gspca_dev)
	402	{
	403	}
	404
	405	static void sd_close(struct gspca_dev *gspca_dev)
	406	{
	407	}
	408
	409	static void sd_pkt_scan(struct gspca_dev *gspca_dev,
	410	struct gspca_frame frame, / target */
a5ae2062	411	__u8 data, / isoc packet */
63eb9546 JFM	412	int len) /* iso packet length */
63eb9546 JFM	413	{
4aa0d037	414	static unsigned char ffd9[] = {0xff, 0xd9};
63eb9546 JFM	415
	416	/* a frame starts with:
	417	* - 0xff 0xfe
d43fa32f JFM	418	* - 0x08 0x00 - length (little endian ?!)
d43fa32f JFM	419	* - 4 bytes = size of whole frame (BE - including header)
63eb9546 JFM	420	* - 0x00 0x0c
	421	* - 0xff 0xd8
	422	* - .. JPEG image with escape sequences (ff 00)
d43fa32f	423	* (without ending - ff d9)
63eb9546 JFM	424	*/
63eb9546 JFM	425	if (data[0] == 0xff && data[1] == 0xfe) {
d43fa32f JFM	426	frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
d43fa32f JFM	427	ffd9, 2);
63eb9546	428
d43fa32f	429	/* put the JPEG 411 header */
63eb9546 JFM	430	jpeg_put_header(gspca_dev, frame, sd_quant, 0x22);
	431
	432	/* beginning of the frame */
	433	#define STKHDRSZ 12
63eb9546 JFM	434	gspca_frame_add(gspca_dev, INTER_PACKET, frame,
	435	data + STKHDRSZ, len - STKHDRSZ);
	436	#undef STKHDRSZ
63eb9546 JFM	437	return;
63eb9546 JFM	438	}
63eb9546	439	gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
63eb9546 JFM	440	}
	441
	442	static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
	443	{
	444	struct sd sd = (struct sd ) gspca_dev;
	445
	446	sd->brightness = val;
	447	if (gspca_dev->streaming)
	448	setbrightness(gspca_dev);
	449	return 0;
	450	}
	451
	452	static int sd_getbrightness(struct gspca_dev gspca_dev, __s32 val)
	453	{
	454	struct sd sd = (struct sd ) gspca_dev;
	455
	456	*val = sd->brightness;
	457	return 0;
	458	}
	459
	460	static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
	461	{
	462	struct sd sd = (struct sd ) gspca_dev;
	463
	464	sd->contrast = val;
	465	if (gspca_dev->streaming)
	466	setcontrast(gspca_dev);
	467	return 0;
	468	}
	469
	470	static int sd_getcontrast(struct gspca_dev gspca_dev, __s32 val)
	471	{
	472	struct sd sd = (struct sd ) gspca_dev;
	473
	474	*val = sd->contrast;
	475	return 0;
	476	}
	477
	478	static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val)
	479	{
	480	struct sd sd = (struct sd ) gspca_dev;
	481
	482	sd->colors = val;
	483	if (gspca_dev->streaming)
	484	setcolors(gspca_dev);
	485	return 0;
	486	}
	487
	488	static int sd_getcolors(struct gspca_dev gspca_dev, __s32 val)
	489	{
	490	struct sd sd = (struct sd ) gspca_dev;
	491
	492	*val = sd->colors;
	493	return 0;
	494	}
	495
6a7eba24 JFM	496	static int sd_setfreq(struct gspca_dev *gspca_dev, __s32 val)
	497	{
	498	struct sd sd = (struct sd ) gspca_dev;
	499
	500	sd->lightfreq = val;
	501	if (gspca_dev->streaming)
	502	setfreq(gspca_dev);
	503	return 0;
	504	}
	505
	506	static int sd_getfreq(struct gspca_dev gspca_dev, __s32 val)
	507	{
	508	struct sd sd = (struct sd ) gspca_dev;
	509
	510	*val = sd->lightfreq;
	511	return 0;
	512	}
	513
	514	static int sd_querymenu(struct gspca_dev *gspca_dev,
	515	struct v4l2_querymenu *menu)
	516	{
	517	switch (menu->id) {
	518	case V4L2_CID_POWER_LINE_FREQUENCY:
	519	switch (menu->index) {
	520	case 1: /* V4L2_CID_POWER_LINE_FREQUENCY_50HZ */
a5ae2062	521	strcpy((char *) menu->name, "50 Hz");
6a7eba24 JFM	522	return 0;
6a7eba24 JFM	523	case 2: /* V4L2_CID_POWER_LINE_FREQUENCY_60HZ */
a5ae2062	524	strcpy((char *) menu->name, "60 Hz");
6a7eba24 JFM	525	return 0;
	526	}
	527	break;
	528	}
	529	return -EINVAL;
	530	}
	531
63eb9546 JFM	532	/* sub-driver description */
	533	static struct sd_desc sd_desc = {
	534	.name = MODULE_NAME,
	535	.ctrls = sd_ctrls,
	536	.nctrls = sizeof sd_ctrls / sizeof sd_ctrls[0],
	537	.config = sd_config,
	538	.open = sd_open,
	539	.start = sd_start,
	540	.stopN = sd_stopN,
	541	.stop0 = sd_stop0,
	542	.close = sd_close,
	543	.pkt_scan = sd_pkt_scan,
6a7eba24	544	.querymenu = sd_querymenu,
63eb9546 JFM	545	};
	546
	547	/* -- module initialisation -- */
	548	#define DVNM(name) .driver_info = (kernel_ulong_t) name
	549	static __devinitdata struct usb_device_id device_table[] = {
	550	{USB_DEVICE(0x05e1, 0x0893), DVNM("Syntek DV4000")},
	551	{}
	552	};
	553	MODULE_DEVICE_TABLE(usb, device_table);
	554
	555	/* -- device connect -- */
	556	static int sd_probe(struct usb_interface *intf,
	557	const struct usb_device_id *id)
	558	{
d43fa32f JFM	559	return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
d43fa32f JFM	560	THIS_MODULE);
63eb9546 JFM	561	}
	562
	563	static struct usb_driver sd_driver = {
	564	.name = MODULE_NAME,
	565	.id_table = device_table,
	566	.probe = sd_probe,
	567	.disconnect = gspca_disconnect,
	568	};
	569
	570	/* -- module insert / remove -- */
	571	static int __init sd_mod_init(void)
	572	{
	573	if (usb_register(&sd_driver) < 0)
	574	return -1;
	575	info("v%s registered", version);
	576	return 0;
	577	}
	578	static void __exit sd_mod_exit(void)
	579	{
	580	usb_deregister(&sd_driver);
	581	info("deregistered");
	582	}
	583
	584	module_init(sd_mod_init);
	585	module_exit(sd_mod_exit);
	586
63eb9546 JFM	587	module_param_named(quant, sd_quant, int, 0644);
63eb9546 JFM	588	MODULE_PARM_DESC(quant, "Quantization index (0..8)");