[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / video / gspca / stv06xx / stv06xx_st6422.c

/*
 * Support for the sensor part which is integrated (I think) into the
 * st6422 stv06xx alike bridge, as its integrated there are no i2c writes
 * but instead direct bridge writes.
 *
 * Copyright (c) 2009 Hans de Goede <hdegoede@redhat.com>
 *
 * Strongly based on qc-usb-messenger, which is:
 * Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher
 *		      Mark Cave-Ayland, Carlo E Prelz, Dick Streefland
 * Copyright (c) 2002, 2003 Tuukka Toivonen
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include "stv06xx_st6422.h"

/* controls */
enum e_ctrl {
	BRIGHTNESS,
	CONTRAST,
	GAIN,
	EXPOSURE,
	NCTRLS		/* number of controls */
};

/* sensor settings */
struct st6422_settings {
	struct gspca_ctrl ctrls[NCTRLS];
};

static struct v4l2_pix_format st6422_mode[] = {
	/* Note we actually get 124 lines of data, of which we skip the 4st
	   4 as they are garbage */
	{
		162,
		120,
		V4L2_PIX_FMT_SGRBG8,
		V4L2_FIELD_NONE,
		.sizeimage = 162 * 120,
		.bytesperline = 162,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 1
	},
	/* Note we actually get 248 lines of data, of which we skip the 4st
	   4 as they are garbage, and we tell the app it only gets the
	   first 240 of the 244 lines it actually gets, so that it ignores
	   the last 4. */
	{
		324,
		240,
		V4L2_PIX_FMT_SGRBG8,
		V4L2_FIELD_NONE,
		.sizeimage = 324 * 244,
		.bytesperline = 324,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 0
	},
};

/* V4L2 controls supported by the driver */
static void st6422_set_brightness(struct gspca_dev *gspca_dev);
static void st6422_set_contrast(struct gspca_dev *gspca_dev);
static void st6422_set_gain(struct gspca_dev *gspca_dev);
static void st6422_set_exposure(struct gspca_dev *gspca_dev);

static const struct ctrl st6422_ctrl[NCTRLS] = {
[BRIGHTNESS] = {
		{
			.id		= V4L2_CID_BRIGHTNESS,
			.type		= V4L2_CTRL_TYPE_INTEGER,
			.name		= "Brightness",
			.minimum	= 0,
			.maximum	= 31,
			.step		= 1,
			.default_value  = 3
		},
		.set_control = st6422_set_brightness
	},
[CONTRAST] = {
		{
			.id		= V4L2_CID_CONTRAST,
			.type		= V4L2_CTRL_TYPE_INTEGER,
			.name		= "Contrast",
			.minimum	= 0,
			.maximum	= 15,
			.step		= 1,
			.default_value  = 11
		},
		.set_control = st6422_set_contrast
	},
[GAIN] = {
		{
			.id		= V4L2_CID_GAIN,
			.type		= V4L2_CTRL_TYPE_INTEGER,
			.name		= "Gain",
			.minimum	= 0,
			.maximum	= 255,
			.step		= 1,
			.default_value  = 64
		},
		.set_control = st6422_set_gain
	},
[EXPOSURE] = {
		{
			.id		= V4L2_CID_EXPOSURE,
			.type		= V4L2_CTRL_TYPE_INTEGER,
			.name		= "Exposure",
			.minimum	= 0,
#define EXPOSURE_MAX 1023
			.maximum	= EXPOSURE_MAX,
			.step		= 1,
			.default_value  = 256
		},
		.set_control = st6422_set_exposure
	},
};

static int st6422_probe(struct sd *sd)
{
	struct st6422_settings *sensor_settings;

	if (sd->bridge != BRIDGE_ST6422)
		return -ENODEV;

	pr_info("st6422 sensor detected\n");

	sensor_settings = kmalloc(sizeof *sensor_settings, GFP_KERNEL);
	if (!sensor_settings)
		return -ENOMEM;

	sd->gspca_dev.cam.cam_mode = st6422_mode;
	sd->gspca_dev.cam.nmodes = ARRAY_SIZE(st6422_mode);
	sd->gspca_dev.cam.ctrls = sensor_settings->ctrls;
	sd->desc.ctrls = st6422_ctrl;
	sd->desc.nctrls = ARRAY_SIZE(st6422_ctrl);
	sd->sensor_priv = sensor_settings;

	return 0;
}

static int st6422_init(struct sd *sd)
{
	int err = 0, i;

	const u16 st6422_bridge_init[][2] = {
		{ STV_ISO_ENABLE, 0x00 }, /* disable capture */
		{ 0x1436, 0x00 },
		{ 0x1432, 0x03 },	/* 0x00-0x1F brightness */
		{ 0x143a, 0xf9 },	/* 0x00-0x0F contrast */
		{ 0x0509, 0x38 },	/* R */
		{ 0x050a, 0x38 },	/* G */
		{ 0x050b, 0x38 },	/* B */
		{ 0x050c, 0x2a },
		{ 0x050d, 0x01 },


		{ 0x1431, 0x00 },	/* 0x00-0x07 ??? */
		{ 0x1433, 0x34 },	/* 160x120, 0x00-0x01 night filter */
		{ 0x1438, 0x18 },	/* 640x480 */
/* 18 bayes */
/* 10 compressed? */

		{ 0x1439, 0x00 },
/* anti-noise?  0xa2 gives a perfect image */

		{ 0x143b, 0x05 },
		{ 0x143c, 0x00 },	/* 0x00-0x01 - ??? */


/* shutter time 0x0000-0x03FF */
/* low value  give good picures on moving objects (but requires much light) */
/* high value gives good picures in darkness (but tends to be overexposed) */
		{ 0x143e, 0x01 },
		{ 0x143d, 0x00 },

		{ 0x1442, 0xe2 },
/* write: 1x1x xxxx */
/* read:  1x1x xxxx */
/*        bit 5 == button pressed and hold if 0 */
/* write 0xe2,0xea */

/* 0x144a */
/* 0x00 init */
/* bit 7 == button has been pressed, but not handled */

/* interrupt */
/* if(urb->iso_frame_desc[i].status == 0x80) { */
/* if(urb->iso_frame_desc[i].status == 0x88) { */

		{ 0x1500, 0xd0 },
		{ 0x1500, 0xd0 },
		{ 0x1500, 0x50 },	/* 0x00 - 0xFF  0x80 == compr ? */

		{ 0x1501, 0xaf },
/* high val-> light area gets darker */
/* low val -> light area gets lighter */
		{ 0x1502, 0xc2 },
/* high val-> light area gets darker */
/* low val -> light area gets lighter */
		{ 0x1503, 0x45 },
/* high val-> light area gets darker */
/* low val -> light area gets lighter */
		{ 0x1505, 0x02 },
/* 2  : 324x248  80352 bytes */
/* 7  : 248x162  40176 bytes */
/* c+f: 162*124  20088 bytes */

		{ 0x150e, 0x8e },
		{ 0x150f, 0x37 },
		{ 0x15c0, 0x00 },
		{ 0x15c3, 0x08 },	/* 0x04/0x14 ... test pictures ??? */


		{ 0x143f, 0x01 },	/* commit settings */

	};

	for (i = 0; i < ARRAY_SIZE(st6422_bridge_init) && !err; i++) {
		err = stv06xx_write_bridge(sd, st6422_bridge_init[i][0],
					       st6422_bridge_init[i][1]);
	}

	return err;
}

static void st6422_disconnect(struct sd *sd)
{
	sd->sensor = NULL;
	kfree(sd->sensor_priv);
}

static int setbrightness(struct sd *sd)
{
	struct st6422_settings *sensor_settings = sd->sensor_priv;

	/* val goes from 0 -> 31 */
	return stv06xx_write_bridge(sd, 0x1432,
			sensor_settings->ctrls[BRIGHTNESS].val);
}

static int setcontrast(struct sd *sd)
{
	struct st6422_settings *sensor_settings = sd->sensor_priv;

	/* Val goes from 0 -> 15 */
	return stv06xx_write_bridge(sd, 0x143a,
			sensor_settings->ctrls[CONTRAST].val | 0xf0);
}

static int setgain(struct sd *sd)
{
	struct st6422_settings *sensor_settings = sd->sensor_priv;
	u8 gain;
	int err;

	gain = sensor_settings->ctrls[GAIN].val;

	/* Set red, green, blue, gain */
	err = stv06xx_write_bridge(sd, 0x0509, gain);
	if (err < 0)
		return err;

	err = stv06xx_write_bridge(sd, 0x050a, gain);
	if (err < 0)
		return err;

	err = stv06xx_write_bridge(sd, 0x050b, gain);
	if (err < 0)
		return err;

	/* 2 mystery writes */
	err = stv06xx_write_bridge(sd, 0x050c, 0x2a);
	if (err < 0)
		return err;

	return stv06xx_write_bridge(sd, 0x050d, 0x01);
}

static int setexposure(struct sd *sd)
{
	struct st6422_settings *sensor_settings = sd->sensor_priv;
	u16 expo;
	int err;

	expo = sensor_settings->ctrls[EXPOSURE].val;
	err = stv06xx_write_bridge(sd, 0x143d, expo & 0xff);
	if (err < 0)
		return err;

	return stv06xx_write_bridge(sd, 0x143e, expo >> 8);
}

static int st6422_start(struct sd *sd)
{
	int err;
	struct cam *cam = &sd->gspca_dev.cam;

	if (cam->cam_mode[sd->gspca_dev.curr_mode].priv)
		err = stv06xx_write_bridge(sd, 0x1505, 0x0f);
	else
		err = stv06xx_write_bridge(sd, 0x1505, 0x02);
	if (err < 0)
		return err;

	err = setbrightness(sd);
	if (err < 0)
		return err;

	err = setcontrast(sd);
	if (err < 0)
		return err;

	err = setexposure(sd);
	if (err < 0)
		return err;

	err = setgain(sd);
	if (err < 0)
		return err;

	/* commit settings */
	err = stv06xx_write_bridge(sd, 0x143f, 0x01);
	return (err < 0) ? err : 0;
}

static int st6422_stop(struct sd *sd)
{
	PDEBUG(D_STREAM, "Halting stream");

	return 0;
}

static void st6422_set_brightness(struct gspca_dev *gspca_dev)
{
	int err;
	struct sd *sd = (struct sd *) gspca_dev;

	err = setbrightness(sd);

	/* commit settings */
	if (err >= 0)
		err = stv06xx_write_bridge(sd, 0x143f, 0x01);

	gspca_dev->usb_err = err;
}

static void st6422_set_contrast(struct gspca_dev *gspca_dev)
{
	int err;
	struct sd *sd = (struct sd *) gspca_dev;

	err = setcontrast(sd);

	/* commit settings */
	if (err >= 0)
		err = stv06xx_write_bridge(sd, 0x143f, 0x01);

	gspca_dev->usb_err = err;
}

static void st6422_set_gain(struct gspca_dev *gspca_dev)
{
	int err;
	struct sd *sd = (struct sd *) gspca_dev;

	err = setgain(sd);

	/* commit settings */
	if (err >= 0)
		err = stv06xx_write_bridge(sd, 0x143f, 0x01);

	gspca_dev->usb_err = err;
}

static void st6422_set_exposure(struct gspca_dev *gspca_dev)
{
	int err;
	struct sd *sd = (struct sd *) gspca_dev;

	err = setexposure(sd);

	/* commit settings */
	if (err >= 0)
		err = stv06xx_write_bridge(sd, 0x143f, 0x01);

	gspca_dev->usb_err = err;
}
Commit	Line	Data
8668d504 HG	1	/*
	2	* Support for the sensor part which is integrated (I think) into the
	3	* st6422 stv06xx alike bridge, as its integrated there are no i2c writes
	4	* but instead direct bridge writes.
	5	*
	6	* Copyright (c) 2009 Hans de Goede <hdegoede@redhat.com>
	7	*
	8	* Strongly based on qc-usb-messenger, which is:
	9	* Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher
	10	* Mark Cave-Ayland, Carlo E Prelz, Dick Streefland
	11	* Copyright (c) 2002, 2003 Tuukka Toivonen
	12	*
	13	* This program is free software; you can redistribute it and/or modify
	14	* it under the terms of the GNU General Public License as published by
	15	* the Free Software Foundation; either version 2 of the License, or
	16	* (at your option) any later version.
	17	*
	18	* This program is distributed in the hope that it will be useful,
	19	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	20	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	21	* GNU General Public License for more details.
	22	*
	23	* You should have received a copy of the GNU General Public License
	24	* along with this program; if not, write to the Free Software
	25	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	26	*
	27	*/
	28
133a9fe9 JP	29	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
133a9fe9 JP	30
8668d504 HG	31	#include "stv06xx_st6422.h"
8668d504 HG	32
71e84ea7 JFM	33	/* controls */
	34	enum e_ctrl {
	35	BRIGHTNESS,
	36	CONTRAST,
	37	GAIN,
	38	EXPOSURE,
	39	NCTRLS /* number of controls */
	40	};
	41
	42	/* sensor settings */
	43	struct st6422_settings {
	44	struct gspca_ctrl ctrls[NCTRLS];
	45	};
	46
8668d504 HG	47	static struct v4l2_pix_format st6422_mode[] = {
	48	/* Note we actually get 124 lines of data, of which we skip the 4st
	49	4 as they are garbage */
	50	{
	51	162,
	52	120,
	53	V4L2_PIX_FMT_SGRBG8,
	54	V4L2_FIELD_NONE,
	55	.sizeimage = 162 * 120,
	56	.bytesperline = 162,
	57	.colorspace = V4L2_COLORSPACE_SRGB,
	58	.priv = 1
	59	},
	60	/* Note we actually get 248 lines of data, of which we skip the 4st
	61	4 as they are garbage, and we tell the app it only gets the
	62	first 240 of the 244 lines it actually gets, so that it ignores
	63	the last 4. */
	64	{
	65	324,
	66	240,
	67	V4L2_PIX_FMT_SGRBG8,
	68	V4L2_FIELD_NONE,
	69	.sizeimage = 324 * 244,
	70	.bytesperline = 324,
	71	.colorspace = V4L2_COLORSPACE_SRGB,
	72	.priv = 0
	73	},
	74	};
	75
71e84ea7 JFM	76	/* V4L2 controls supported by the driver */
	77	static void st6422_set_brightness(struct gspca_dev *gspca_dev);
	78	static void st6422_set_contrast(struct gspca_dev *gspca_dev);
	79	static void st6422_set_gain(struct gspca_dev *gspca_dev);
	80	static void st6422_set_exposure(struct gspca_dev *gspca_dev);
	81
	82	static const struct ctrl st6422_ctrl[NCTRLS] = {
	83	[BRIGHTNESS] = {
8668d504 HG	84	{
	85	.id = V4L2_CID_BRIGHTNESS,
	86	.type = V4L2_CTRL_TYPE_INTEGER,
	87	.name = "Brightness",
	88	.minimum = 0,
	89	.maximum = 31,
	90	.step = 1,
	91	.default_value = 3
	92	},
71e84ea7	93	.set_control = st6422_set_brightness
8668d504	94	},
71e84ea7	95	[CONTRAST] = {
8668d504 HG	96	{
	97	.id = V4L2_CID_CONTRAST,
	98	.type = V4L2_CTRL_TYPE_INTEGER,
	99	.name = "Contrast",
	100	.minimum = 0,
	101	.maximum = 15,
	102	.step = 1,
	103	.default_value = 11
	104	},
71e84ea7	105	.set_control = st6422_set_contrast
8668d504	106	},
71e84ea7	107	[GAIN] = {
8668d504 HG	108	{
	109	.id = V4L2_CID_GAIN,
	110	.type = V4L2_CTRL_TYPE_INTEGER,
	111	.name = "Gain",
	112	.minimum = 0,
	113	.maximum = 255,
	114	.step = 1,
	115	.default_value = 64
	116	},
71e84ea7	117	.set_control = st6422_set_gain
8668d504	118	},
71e84ea7	119	[EXPOSURE] = {
8668d504 HG	120	{
	121	.id = V4L2_CID_EXPOSURE,
	122	.type = V4L2_CTRL_TYPE_INTEGER,
	123	.name = "Exposure",
	124	.minimum = 0,
71e84ea7 JFM	125	#define EXPOSURE_MAX 1023
71e84ea7 JFM	126	.maximum = EXPOSURE_MAX,
8668d504 HG	127	.step = 1,
	128	.default_value = 256
	129	},
71e84ea7	130	.set_control = st6422_set_exposure
8668d504 HG	131	},
	132	};
	133
	134	static int st6422_probe(struct sd *sd)
	135	{
71e84ea7	136	struct st6422_settings *sensor_settings;
8668d504 HG	137
	138	if (sd->bridge != BRIDGE_ST6422)
	139	return -ENODEV;
	140
133a9fe9	141	pr_info("st6422 sensor detected\n");
8668d504	142
71e84ea7	143	sensor_settings = kmalloc(sizeof *sensor_settings, GFP_KERNEL);
8668d504 HG	144	if (!sensor_settings)
	145	return -ENOMEM;
	146
	147	sd->gspca_dev.cam.cam_mode = st6422_mode;
	148	sd->gspca_dev.cam.nmodes = ARRAY_SIZE(st6422_mode);
71e84ea7	149	sd->gspca_dev.cam.ctrls = sensor_settings->ctrls;
8668d504 HG	150	sd->desc.ctrls = st6422_ctrl;
	151	sd->desc.nctrls = ARRAY_SIZE(st6422_ctrl);
	152	sd->sensor_priv = sensor_settings;
	153
8668d504 HG	154	return 0;
	155	}
	156
	157	static int st6422_init(struct sd *sd)
	158	{
	159	int err = 0, i;
	160
	161	const u16 st6422_bridge_init[][2] = {
	162	{ STV_ISO_ENABLE, 0x00 }, /* disable capture */
	163	{ 0x1436, 0x00 },
	164	{ 0x1432, 0x03 }, /* 0x00-0x1F brightness */
1d00d6c1	165	{ 0x143a, 0xf9 }, /* 0x00-0x0F contrast */
8668d504 HG	166	{ 0x0509, 0x38 }, /* R */
	167	{ 0x050a, 0x38 }, /* G */
	168	{ 0x050b, 0x38 }, /* B */
1d00d6c1	169	{ 0x050c, 0x2a },
8668d504 HG	170	{ 0x050d, 0x01 },
	171
	172
	173	{ 0x1431, 0x00 }, /* 0x00-0x07 ??? */
	174	{ 0x1433, 0x34 }, /* 160x120, 0x00-0x01 night filter */
	175	{ 0x1438, 0x18 }, /* 640x480 */
	176	/* 18 bayes */
	177	/* 10 compressed? */
	178
	179	{ 0x1439, 0x00 },
bf5c562a	180	/* anti-noise? 0xa2 gives a perfect image */
8668d504 HG	181
	182	{ 0x143b, 0x05 },
	183	{ 0x143c, 0x00 }, /* 0x00-0x01 - ??? */
	184
	185
	186	/* shutter time 0x0000-0x03FF */
	187	/* low value give good picures on moving objects (but requires much light) */
	188	/* high value gives good picures in darkness (but tends to be overexposed) */
	189	{ 0x143e, 0x01 },
	190	{ 0x143d, 0x00 },
	191
	192	{ 0x1442, 0xe2 },
	193	/* write: 1x1x xxxx */
	194	/* read: 1x1x xxxx */
	195	/* bit 5 == button pressed and hold if 0 */
	196	/* write 0xe2,0xea */
	197
	198	/* 0x144a */
	199	/* 0x00 init */
	200	/* bit 7 == button has been pressed, but not handled */
	201
	202	/* interrupt */
	203	/* if(urb->iso_frame_desc[i].status == 0x80) { */
	204	/* if(urb->iso_frame_desc[i].status == 0x88) { */
	205
	206	{ 0x1500, 0xd0 },
	207	{ 0x1500, 0xd0 },
	208	{ 0x1500, 0x50 }, /* 0x00 - 0xFF 0x80 == compr ? */
	209
	210	{ 0x1501, 0xaf },
bf5c562a EA	211	/* high val-> light area gets darker */
bf5c562a EA	212	/* low val -> light area gets lighter */
8668d504	213	{ 0x1502, 0xc2 },
bf5c562a EA	214	/* high val-> light area gets darker */
bf5c562a EA	215	/* low val -> light area gets lighter */
8668d504	216	{ 0x1503, 0x45 },
bf5c562a EA	217	/* high val-> light area gets darker */
bf5c562a EA	218	/* low val -> light area gets lighter */
8668d504 HG	219	{ 0x1505, 0x02 },
	220	/* 2 : 324x248 80352 bytes */
	221	/* 7 : 248x162 40176 bytes */
	222	/* c+f: 162124 20088 bytes /
	223
	224	{ 0x150e, 0x8e },
	225	{ 0x150f, 0x37 },
	226	{ 0x15c0, 0x00 },
8668d504 HG	227	{ 0x15c3, 0x08 }, /* 0x04/0x14 ... test pictures ??? */
	228
	229
	230	{ 0x143f, 0x01 }, /* commit settings */
	231
	232	};
	233
	234	for (i = 0; i < ARRAY_SIZE(st6422_bridge_init) && !err; i++) {
	235	err = stv06xx_write_bridge(sd, st6422_bridge_init[i][0],
	236	st6422_bridge_init[i][1]);
	237	}
	238
	239	return err;
	240	}
	241
	242	static void st6422_disconnect(struct sd *sd)
	243	{
	244	sd->sensor = NULL;
	245	kfree(sd->sensor_priv);
	246	}
	247
71e84ea7 JFM	248	static int setbrightness(struct sd *sd)
	249	{
	250	struct st6422_settings *sensor_settings = sd->sensor_priv;
	251
	252	/* val goes from 0 -> 31 */
	253	return stv06xx_write_bridge(sd, 0x1432,
	254	sensor_settings->ctrls[BRIGHTNESS].val);
	255	}
	256
	257	static int setcontrast(struct sd *sd)
	258	{
	259	struct st6422_settings *sensor_settings = sd->sensor_priv;
	260
	261	/* Val goes from 0 -> 15 */
	262	return stv06xx_write_bridge(sd, 0x143a,
	263	sensor_settings->ctrls[CONTRAST].val \| 0xf0);
	264	}
	265
	266	static int setgain(struct sd *sd)
8668d504	267	{
71e84ea7 JFM	268	struct st6422_settings *sensor_settings = sd->sensor_priv;
71e84ea7 JFM	269	u8 gain;
c0b33bdc	270	int err;
8668d504	271
71e84ea7	272	gain = sensor_settings->ctrls[GAIN].val;
8668d504	273
71e84ea7 JFM	274	/* Set red, green, blue, gain */
71e84ea7 JFM	275	err = stv06xx_write_bridge(sd, 0x0509, gain);
8668d504 HG	276	if (err < 0)
	277	return err;
	278
71e84ea7	279	err = stv06xx_write_bridge(sd, 0x050a, gain);
8668d504 HG	280	if (err < 0)
	281	return err;
	282
71e84ea7	283	err = stv06xx_write_bridge(sd, 0x050b, gain);
8668d504 HG	284	if (err < 0)
	285	return err;
	286
71e84ea7 JFM	287	/* 2 mystery writes */
71e84ea7 JFM	288	err = stv06xx_write_bridge(sd, 0x050c, 0x2a);
8668d504 HG	289	if (err < 0)
	290	return err;
	291
71e84ea7	292	return stv06xx_write_bridge(sd, 0x050d, 0x01);
8668d504 HG	293	}
8668d504 HG	294
71e84ea7	295	static int setexposure(struct sd *sd)
8668d504	296	{
71e84ea7 JFM	297	struct st6422_settings *sensor_settings = sd->sensor_priv;
	298	u16 expo;
	299	int err;
8668d504	300
71e84ea7 JFM	301	expo = sensor_settings->ctrls[EXPOSURE].val;
	302	err = stv06xx_write_bridge(sd, 0x143d, expo & 0xff);
	303	if (err < 0)
	304	return err;
8668d504	305
71e84ea7	306	return stv06xx_write_bridge(sd, 0x143e, expo >> 8);
8668d504 HG	307	}
8668d504 HG	308
71e84ea7	309	static int st6422_start(struct sd *sd)
8668d504 HG	310	{
8668d504 HG	311	int err;
71e84ea7	312	struct cam *cam = &sd->gspca_dev.cam;
8668d504	313
71e84ea7 JFM	314	if (cam->cam_mode[sd->gspca_dev.curr_mode].priv)
	315	err = stv06xx_write_bridge(sd, 0x1505, 0x0f);
	316	else
	317	err = stv06xx_write_bridge(sd, 0x1505, 0x02);
	318	if (err < 0)
	319	return err;
8668d504	320
71e84ea7 JFM	321	err = setbrightness(sd);
	322	if (err < 0)
	323	return err;
8668d504	324
71e84ea7 JFM	325	err = setcontrast(sd);
	326	if (err < 0)
	327	return err;
	328
	329	err = setexposure(sd);
	330	if (err < 0)
	331	return err;
	332
	333	err = setgain(sd);
8668d504 HG	334	if (err < 0)
	335	return err;
	336
	337	/* commit settings */
	338	err = stv06xx_write_bridge(sd, 0x143f, 0x01);
	339	return (err < 0) ? err : 0;
	340	}
	341
71e84ea7	342	static int st6422_stop(struct sd *sd)
8668d504	343	{
71e84ea7	344	PDEBUG(D_STREAM, "Halting stream");
8668d504 HG	345
	346	return 0;
	347	}
	348
71e84ea7	349	static void st6422_set_brightness(struct gspca_dev *gspca_dev)
8668d504 HG	350	{
	351	int err;
	352	struct sd sd = (struct sd ) gspca_dev;
8668d504	353
71e84ea7	354	err = setbrightness(sd);
8668d504 HG	355
8668d504 HG	356	/* commit settings */
71e84ea7 JFM	357	if (err >= 0)
71e84ea7 JFM	358	err = stv06xx_write_bridge(sd, 0x143f, 0x01);
8668d504	359
71e84ea7	360	gspca_dev->usb_err = err;
8668d504 HG	361	}
8668d504 HG	362
71e84ea7	363	static void st6422_set_contrast(struct gspca_dev *gspca_dev)
8668d504 HG	364	{
	365	int err;
	366	struct sd sd = (struct sd ) gspca_dev;
8668d504	367
71e84ea7	368	err = setcontrast(sd);
8668d504 HG	369
8668d504 HG	370	/* commit settings */
71e84ea7 JFM	371	if (err >= 0)
	372	err = stv06xx_write_bridge(sd, 0x143f, 0x01);
	373
	374	gspca_dev->usb_err = err;
8668d504 HG	375	}
8668d504 HG	376
71e84ea7	377	static void st6422_set_gain(struct gspca_dev *gspca_dev)
8668d504	378	{
71e84ea7	379	int err;
8668d504	380	struct sd sd = (struct sd ) gspca_dev;
8668d504	381
71e84ea7	382	err = setgain(sd);
8668d504	383
71e84ea7 JFM	384	/* commit settings */
	385	if (err >= 0)
	386	err = stv06xx_write_bridge(sd, 0x143f, 0x01);
8668d504	387
71e84ea7	388	gspca_dev->usb_err = err;
8668d504 HG	389	}
8668d504 HG	390
71e84ea7	391	static void st6422_set_exposure(struct gspca_dev *gspca_dev)
8668d504 HG	392	{
	393	int err;
	394	struct sd sd = (struct sd ) gspca_dev;
8668d504	395
71e84ea7	396	err = setexposure(sd);
8668d504 HG	397
8668d504 HG	398	/* commit settings */
71e84ea7 JFM	399	if (err >= 0)
	400	err = stv06xx_write_bridge(sd, 0x143f, 0x01);
	401
	402	gspca_dev->usb_err = err;
8668d504	403	}