[linux.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(0, 2, 7)
static const char version[] = "0.2.7";

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;
};

/* global parameters */
static int lightfreq = 50;
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 struct ctrl sd_ctrls[] = {
#define SD_BRIGHTNESS 0
	{
	    {
		.id      = V4L2_CID_BRIGHTNESS,
		.type    = V4L2_CTRL_TYPE_INTEGER,
		.name    = "Brightness",
		.minimum = 0,
		.maximum = 255,
		.step    = 1,
		.default_value = 127,
	    },
	    .set = sd_setbrightness,
	    .get = sd_getbrightness,
	},
#define SD_CONTRAST 1
	{
	    {
		.id      = V4L2_CID_CONTRAST,
		.type    = V4L2_CTRL_TYPE_INTEGER,
		.name    = "Contrast",
		.minimum = 0,
		.maximum = 255,
		.step    = 1,
		.default_value = 127,
	    },
	    .set = sd_setcontrast,
	    .get = sd_getcontrast,
	},
#define SD_COLOR 2
	{
	    {
		.id      = V4L2_CID_SATURATION,
		.type    = V4L2_CTRL_TYPE_INTEGER,
		.name    = "Saturation",
		.minimum = 0,
		.maximum = 255,
		.step    = 1,
		.default_value = 127,
	    },
	    .set = sd_setcolors,
	    .get = sd_getcolors,
	},
};

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

/* -- read a register -- */
static int reg_read(struct gspca_dev *gspca_dev,
			__u16 index, __u8 *buf)
{
	int ret;
	struct usb_device *dev = gspca_dev->dev;

	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_read err %d", ret);
	return ret;
}

/* -- write a register -- */
static int reg_write(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_write 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_write(gspca_dev, 0x634, (ads >> 16) & 0xff);
	reg_write(gspca_dev, 0x635, (ads >> 8) & 0xff);
	reg_write(gspca_dev, 0x636, ads & 0xff);
	reg_write(gspca_dev, 0x637, 0);
	reg_write(gspca_dev, 0x638, len & 0xff);
	reg_write(gspca_dev, 0x639, len >> 8);
	reg_write(gspca_dev, 0x63a, 0);
	reg_write(gspca_dev, 0x63b, 0);
	reg_write(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_read(gspca_dev, 0x0704, &value);
		if (ret < 0)
			goto ko;
		ret = reg_read(gspca_dev, 0x0705, &seq);
		if (ret < 0)
			goto ko;
		ret = reg_read(gspca_dev, 0x0650, &value);
		if (ret < 0)
			goto ko;
		reg_write(gspca_dev, 0x654, seq);
	} else
		reg_write(gspca_dev, 0x654, (ads >> 16) & 0xff);
	reg_write(gspca_dev, 0x655, (ads >> 8) & 0xff);
	reg_write(gspca_dev, 0x656, ads & 0xff);
	reg_write(gspca_dev, 0x657, 0);
	reg_write(gspca_dev, 0x658, 0x04);	/* size */
	reg_write(gspca_dev, 0x659, 0);
	reg_write(gspca_dev, 0x65a, 0);
	reg_write(gspca_dev, 0x65b, 0);
	reg_write(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_write(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;

	PDEBUG(D_CONF, "brightness: %d", sd->brightness);
	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;

	PDEBUG(D_CONF, "contrast: %d", sd->contrast);
	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;

	PDEBUG(D_CONF, "saturation: %d",
		sd->colors);
	parval = 0x08000000		/* saturation */
		+ (sd->colors << 16);
	set_par(gspca_dev, parval);
}

/* 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 = sd_ctrls[SD_BRIGHTNESS].qctrl.default_value;
	sd->contrast = sd_ctrls[SD_CONTRAST].qctrl.default_value;
	sd->colors = sd_ctrls[SD_COLOR].qctrl.default_value;
	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_read(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)
		goto out;
	ret = reg_read(gspca_dev, 0x0630, &dum);
	if (ret < 0)
		goto out;
	rcv_val(gspca_dev, 0x000020, 4);	/* << (value ff ff ff ff) */
	ret = reg_read(gspca_dev, 0x0650, &dum);
	if (ret < 0)
		goto out;
	snd_val(gspca_dev, 0x000020, 0xffffffff);
	reg_write(gspca_dev, 0x0620, 0);
	reg_write(gspca_dev, 0x0630, 0);
	reg_write(gspca_dev, 0x0640, 0);
	reg_write(gspca_dev, 0x0650, 0);
	reg_write(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 ? */
	set_par(gspca_dev, lightfreq == 60
			? 0x33780000		/* 60 Hz */
			: 0x33640000);		/* 50 Hz */

	/* 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_read(gspca_dev, 0x0630, &value);
	rcv_val(gspca_dev, 0x000020, 4);	/* << (value ff ff ff ff) */
	reg_read(gspca_dev, 0x0650, &value);
	snd_val(gspca_dev, 0x000020, 0xffffffff);
	reg_write(gspca_dev, 0x0620, 0);
	reg_write(gspca_dev, 0x0630, 0);
	reg_write(gspca_dev, 0x0640, 0);
	reg_write(gspca_dev, 0x0650, 0);
	reg_write(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 */
			unsigned char *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;
}

/* 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,
};

/* -- 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(lightfreq, int, 0644);
MODULE_PARM_DESC(lightfreq, "Light frequency 50 or 60 Hz");
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
d43fa32f JFM	26	#define DRIVER_VERSION_NUMBER KERNEL_VERSION(0, 2, 7)
d43fa32f JFM	27	static const char version[] = "0.2.7";
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;
	40	};
	41
	42	/* global parameters */
	43	static int lightfreq = 50;
	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);
	53
	54	static struct ctrl sd_ctrls[] = {
	55	#define SD_BRIGHTNESS 0
	56	{
	57	{
	58	.id = V4L2_CID_BRIGHTNESS,
	59	.type = V4L2_CTRL_TYPE_INTEGER,
	60	.name = "Brightness",
	61	.minimum = 0,
	62	.maximum = 255,
	63	.step = 1,
	64	.default_value = 127,
	65	},
	66	.set = sd_setbrightness,
	67	.get = sd_getbrightness,
	68	},
	69	#define SD_CONTRAST 1
	70	{
	71	{
	72	.id = V4L2_CID_CONTRAST,
	73	.type = V4L2_CTRL_TYPE_INTEGER,
	74	.name = "Contrast",
	75	.minimum = 0,
	76	.maximum = 255,
	77	.step = 1,
	78	.default_value = 127,
	79	},
	80	.set = sd_setcontrast,
	81	.get = sd_getcontrast,
	82	},
	83	#define SD_COLOR 2
	84	{
	85	{
	86	.id = V4L2_CID_SATURATION,
	87	.type = V4L2_CTRL_TYPE_INTEGER,
	88	.name = "Saturation",
	89	.minimum = 0,
	90	.maximum = 255,
	91	.step = 1,
92	.default_value = 127,
93	},
94	.set = sd_setcolors,
95	.get = sd_getcolors,
96	},
97	};
98
99	static struct cam_mode vga_mode[] = {
100	{V4L2_PIX_FMT_JPEG, 320, 240},
101	{V4L2_PIX_FMT_JPEG, 640, 480},
102	};
103
104	/* -- read a register -- */
105	static int reg_read(struct gspca_dev *gspca_dev,
106	__u16 index, __u8 *buf)
107	{
108	int ret;
109	struct usb_device *dev = gspca_dev->dev;
110
111	ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
112	0x00,
113	USB_DIR_IN \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
114	0x00,
115	index,
116	buf, 1,
117	500);
118	if (ret < 0)
119	PDEBUG(D_ERR, "reg_read err %d", ret);
120	return ret;
121	}
122
123	/* -- write a register -- */
124	static int reg_write(struct gspca_dev *gspca_dev,
125	__u16 index, __u16 value)
126	{
127	struct usb_device *dev = gspca_dev->dev;
128	int ret;
129
130	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
131	0x01,
132	USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
133	value,
134	index,
135	NULL,
136	0,
137	500);
138	if (ret < 0)
139	PDEBUG(D_ERR, "reg_write err %d", ret);
140	return ret;
141	}
142
143	/* -- get a value -- */
144	static int rcv_val(struct gspca_dev *gspca_dev,
145	int ads,
146	int len)
147	{
148	struct usb_device *dev = gspca_dev->dev;
149	int alen, ret;
150	unsigned char bulk_buf[4];
151
152	reg_write(gspca_dev, 0x634, (ads >> 16) & 0xff);
153	reg_write(gspca_dev, 0x635, (ads >> 8) & 0xff);
154	reg_write(gspca_dev, 0x636, ads & 0xff);
155	reg_write(gspca_dev, 0x637, 0);
156	reg_write(gspca_dev, 0x638, len & 0xff);
157	reg_write(gspca_dev, 0x639, len >> 8);
158	reg_write(gspca_dev, 0x63a, 0);
159	reg_write(gspca_dev, 0x63b, 0);
160	reg_write(gspca_dev, 0x630, 5);
161	if (len > sizeof bulk_buf)
162	return -1;
163	ret = usb_bulk_msg(dev,
164	usb_rcvbulkpipe(dev, 5),
165	bulk_buf,
166	len,
167	&alen,
168	500); /* timeout in milliseconds */
169	return ret;
170	}
171
172	/* -- send a value -- */
173	static int snd_val(struct gspca_dev *gspca_dev,
174	int ads,
175	unsigned int val)
176	{
177	struct usb_device *dev = gspca_dev->dev;
178	int alen, ret;
179	__u8 value, seq;
180	unsigned char bulk_buf[4];
181
182	if (ads == 0x003f08) {
183	ret = reg_read(gspca_dev, 0x0704, &value);
184	if (ret < 0)
185	goto ko;
186	ret = reg_read(gspca_dev, 0x0705, &seq);
187	if (ret < 0)
188	goto ko;
189	ret = reg_read(gspca_dev, 0x0650, &value);
190	if (ret < 0)
191	goto ko;
192	reg_write(gspca_dev, 0x654, seq);
193	} else
194	reg_write(gspca_dev, 0x654, (ads >> 16) & 0xff);
195	reg_write(gspca_dev, 0x655, (ads >> 8) & 0xff);
196	reg_write(gspca_dev, 0x656, ads & 0xff);
197	reg_write(gspca_dev, 0x657, 0);
198	reg_write(gspca_dev, 0x658, 0x04); /* size */
199	reg_write(gspca_dev, 0x659, 0);
200	reg_write(gspca_dev, 0x65a, 0);
201	reg_write(gspca_dev, 0x65b, 0);
202	reg_write(gspca_dev, 0x650, 5);
203	bulk_buf[0] = (val >> 24) & 0xff;
204	bulk_buf[1] = (val >> 16) & 0xff;
205	bulk_buf[2] = (val >> 8) & 0xff;
206	bulk_buf[3] = val & 0xff;
207	ret = usb_bulk_msg(dev,
208	usb_sndbulkpipe(dev, 6),
209	bulk_buf,
210	4,
211	&alen,
212	500); /* timeout in milliseconds */
213	if (ret < 0)
214	goto ko;
215	if (ads == 0x003f08) {
216	seq += 4;
217	seq &= 0x3f;
218	reg_write(gspca_dev, 0x705, seq);
219	}
220	return ret;
221	ko:
222	PDEBUG(D_ERR, "snd_val err %d", ret);
223	return ret;
224	}
225
226	/* set a camera parameter */
227	static int set_par(struct gspca_dev *gspca_dev,
228	int parval)
229	{
230	return snd_val(gspca_dev, 0x003f08, parval);
231	}
232
233	static void setbrightness(struct gspca_dev *gspca_dev)
234	{
235	struct sd sd = (struct sd ) gspca_dev;
236	int parval;
237
238	PDEBUG(D_CONF, "brightness: %d", sd->brightness);
239	parval = 0x06000000 /* whiteness */
240	+ (sd->brightness << 16);
241	set_par(gspca_dev, parval);
242	}
243
244	static void setcontrast(struct gspca_dev *gspca_dev)
245	{
246	struct sd sd = (struct sd ) gspca_dev;
247	int parval;
248
249	PDEBUG(D_CONF, "contrast: %d", sd->contrast);
250	parval = 0x07000000 /* contrast */
251	+ (sd->contrast << 16);
252	set_par(gspca_dev, parval);
253	}
254
255	static void setcolors(struct gspca_dev *gspca_dev)
256	{
257	struct sd sd = (struct sd ) gspca_dev;
258	int parval;
259
260	PDEBUG(D_CONF, "saturation: %d",
261	sd->colors);
262	parval = 0x08000000 /* saturation */
263	+ (sd->colors << 16);
264	set_par(gspca_dev, parval);
265	}
266
267	/* this function is called at probe time */
268	static int sd_config(struct gspca_dev *gspca_dev,
269	const struct usb_device_id *id)
270	{
271	struct sd sd = (struct sd ) gspca_dev;
272	struct cam *cam = &gspca_dev->cam;
273
274	cam->dev_name = (char *) id->driver_info;
275	cam->epaddr = 0x02;
276	gspca_dev->cam.cam_mode = vga_mode;
277	gspca_dev->cam.nmodes = sizeof vga_mode / sizeof vga_mode[0];
278	sd->brightness = sd_ctrls[SD_BRIGHTNESS].qctrl.default_value;
279	sd->contrast = sd_ctrls[SD_CONTRAST].qctrl.default_value;
280	sd->colors = sd_ctrls[SD_COLOR].qctrl.default_value;
281	return 0;
282	}
283
284	/* this function is called at open time */
285	static int sd_open(struct gspca_dev *gspca_dev)
286	{
287	__u8 value;
288	int ret;
289
290	/* check if the device responds */
291	usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
292	ret = reg_read(gspca_dev, 0x0740, &value);
293	if (ret < 0)
294	return ret;
295	if (value != 0xff) {
296	PDEBUG(D_ERR\|D_STREAM, "init reg: 0x%02x", value);
297	return -1;
298	}
299	return 0;
300	}
301
302	/* -- start the camera -- */
303	static void sd_start(struct gspca_dev *gspca_dev)
304	{
305	__u8 dum;
306	int ret, value;
307
308	/* work on alternate 1 */
309	usb_set_interface(gspca_dev->dev, gspca_dev->iface, 1);
310
311	set_par(gspca_dev, 0x10000000);
312	set_par(gspca_dev, 0x00000000);
313	set_par(gspca_dev, 0x8002e001);
314	set_par(gspca_dev, 0x14000000);
315	if (gspca_dev->width > 320)
316	value = 0x8002e001; /* 640x480 */
317	else
318	value = 0x4001f000; /* 320x240 */
319	set_par(gspca_dev, value);
320	ret = usb_set_interface(gspca_dev->dev,
321	gspca_dev->iface,
322	gspca_dev->alt);
323	if (ret < 0)
324	goto out;
325	ret = reg_read(gspca_dev, 0x0630, &dum);
326	if (ret < 0)
327	goto out;
328	rcv_val(gspca_dev, 0x000020, 4); /* << (value ff ff ff ff) */
329	ret = reg_read(gspca_dev, 0x0650, &dum);
330	if (ret < 0)
331	goto out;
332	snd_val(gspca_dev, 0x000020, 0xffffffff);
333	reg_write(gspca_dev, 0x0620, 0);
334	reg_write(gspca_dev, 0x0630, 0);
335	reg_write(gspca_dev, 0x0640, 0);
336	reg_write(gspca_dev, 0x0650, 0);
337	reg_write(gspca_dev, 0x0660, 0);
338	setbrightness(gspca_dev); /* whiteness */
339	setcontrast(gspca_dev); /* contrast */
340	setcolors(gspca_dev); /* saturation */
341	set_par(gspca_dev, 0x09800000); /* Red ? */
342	set_par(gspca_dev, 0x0a800000); /* Green ? */
343	set_par(gspca_dev, 0x0b800000); /* Blue ? */
344	set_par(gspca_dev, 0x0d030000); /* Gamma ? */
345	set_par(gspca_dev, lightfreq == 60
346	? 0x33780000 /* 60 Hz */
347	: 0x33640000); /* 50 Hz */
348
349	/* start the video flow */
350	set_par(gspca_dev, 0x01000000);
351	set_par(gspca_dev, 0x01000000);
352	PDEBUG(D_STREAM, "camera started alt: 0x%02x", gspca_dev->alt);
353	return;
354	out:
355	PDEBUG(D_ERR\|D_STREAM, "camera start err %d", ret);
356	}
357
358	static void sd_stopN(struct gspca_dev *gspca_dev)
359	{
360	struct usb_device *dev = gspca_dev->dev;
361	__u8 value;
362
363	set_par(gspca_dev, 0x02000000);
364	set_par(gspca_dev, 0x02000000);
365	usb_set_interface(dev, gspca_dev->iface, 1);
366	reg_read(gspca_dev, 0x0630, &value);
367	rcv_val(gspca_dev, 0x000020, 4); /* << (value ff ff ff ff) */
368	reg_read(gspca_dev, 0x0650, &value);
369	snd_val(gspca_dev, 0x000020, 0xffffffff);
370	reg_write(gspca_dev, 0x0620, 0);
371	reg_write(gspca_dev, 0x0630, 0);
372	reg_write(gspca_dev, 0x0640, 0);
373	reg_write(gspca_dev, 0x0650, 0);
374	reg_write(gspca_dev, 0x0660, 0);
375	PDEBUG(D_STREAM, "camera stopped");
376	}
377
378	static void sd_stop0(struct gspca_dev *gspca_dev)
379	{
380	}
381
382	static void sd_close(struct gspca_dev *gspca_dev)
383	{
384	}
385
386	static void sd_pkt_scan(struct gspca_dev *gspca_dev,
387	struct gspca_frame frame, / target */
388	unsigned char data, / isoc packet */
389	int len) /* iso packet length */
390	{
4aa0d037	391	static unsigned char ffd9[] = {0xff, 0xd9};
63eb9546 JFM	392
	393	/* a frame starts with:
	394	* - 0xff 0xfe
d43fa32f JFM	395	* - 0x08 0x00 - length (little endian ?!)
d43fa32f JFM	396	* - 4 bytes = size of whole frame (BE - including header)
63eb9546 JFM	397	* - 0x00 0x0c
	398	* - 0xff 0xd8
	399	* - .. JPEG image with escape sequences (ff 00)
d43fa32f	400	* (without ending - ff d9)
63eb9546 JFM	401	*/
63eb9546 JFM	402	if (data[0] == 0xff && data[1] == 0xfe) {
d43fa32f JFM	403	frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
d43fa32f JFM	404	ffd9, 2);
63eb9546	405
d43fa32f	406	/* put the JPEG 411 header */
63eb9546 JFM	407	jpeg_put_header(gspca_dev, frame, sd_quant, 0x22);
	408
	409	/* beginning of the frame */
	410	#define STKHDRSZ 12
63eb9546 JFM	411	gspca_frame_add(gspca_dev, INTER_PACKET, frame,
	412	data + STKHDRSZ, len - STKHDRSZ);
	413	#undef STKHDRSZ
63eb9546 JFM	414	return;
63eb9546 JFM	415	}
63eb9546	416	gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
63eb9546 JFM	417	}
	418
	419	static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
	420	{
	421	struct sd sd = (struct sd ) gspca_dev;
	422
	423	sd->brightness = val;
	424	if (gspca_dev->streaming)
	425	setbrightness(gspca_dev);
	426	return 0;
	427	}
	428
	429	static int sd_getbrightness(struct gspca_dev gspca_dev, __s32 val)
	430	{
	431	struct sd sd = (struct sd ) gspca_dev;
	432
	433	*val = sd->brightness;
	434	return 0;
	435	}
	436
	437	static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
	438	{
	439	struct sd sd = (struct sd ) gspca_dev;
	440
	441	sd->contrast = val;
	442	if (gspca_dev->streaming)
	443	setcontrast(gspca_dev);
	444	return 0;
	445	}
	446
	447	static int sd_getcontrast(struct gspca_dev gspca_dev, __s32 val)
	448	{
	449	struct sd sd = (struct sd ) gspca_dev;
	450
	451	*val = sd->contrast;
	452	return 0;
	453	}
	454
	455	static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val)
	456	{
	457	struct sd sd = (struct sd ) gspca_dev;
	458
	459	sd->colors = val;
	460	if (gspca_dev->streaming)
	461	setcolors(gspca_dev);
	462	return 0;
	463	}
	464
	465	static int sd_getcolors(struct gspca_dev gspca_dev, __s32 val)
	466	{
	467	struct sd sd = (struct sd ) gspca_dev;
	468
	469	*val = sd->colors;
	470	return 0;
	471	}
	472
	473	/* sub-driver description */
	474	static struct sd_desc sd_desc = {
	475	.name = MODULE_NAME,
	476	.ctrls = sd_ctrls,
	477	.nctrls = sizeof sd_ctrls / sizeof sd_ctrls[0],
	478	.config = sd_config,
	479	.open = sd_open,
	480	.start = sd_start,
481	.stopN = sd_stopN,
482	.stop0 = sd_stop0,
483	.close = sd_close,
484	.pkt_scan = sd_pkt_scan,
485	};
486
487	/* -- module initialisation -- */
488	#define DVNM(name) .driver_info = (kernel_ulong_t) name
489	static __devinitdata struct usb_device_id device_table[] = {
490	{USB_DEVICE(0x05e1, 0x0893), DVNM("Syntek DV4000")},
491	{}
492	};
493	MODULE_DEVICE_TABLE(usb, device_table);
494
495	/* -- device connect -- */
496	static int sd_probe(struct usb_interface *intf,
497	const struct usb_device_id *id)
498	{
d43fa32f JFM	499	return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
d43fa32f JFM	500	THIS_MODULE);
63eb9546 JFM	501	}
	502
	503	static struct usb_driver sd_driver = {
	504	.name = MODULE_NAME,
	505	.id_table = device_table,
	506	.probe = sd_probe,
	507	.disconnect = gspca_disconnect,
	508	};
	509
	510	/* -- module insert / remove -- */
	511	static int __init sd_mod_init(void)
	512	{
	513	if (usb_register(&sd_driver) < 0)
	514	return -1;
	515	info("v%s registered", version);
	516	return 0;
	517	}
	518	static void __exit sd_mod_exit(void)
	519	{
	520	usb_deregister(&sd_driver);
	521	info("deregistered");
	522	}
	523
	524	module_init(sd_mod_init);
	525	module_exit(sd_mod_exit);
	526
	527	module_param(lightfreq, int, 0644);
	528	MODULE_PARM_DESC(lightfreq, "Light frequency 50 or 60 Hz");
	529	module_param_named(quant, sd_quant, int, 0644);
	530	MODULE_PARM_DESC(quant, "Quantization index (0..8)");