[deliverable/linux.git] / drivers / media / video / gspca / stv06xx / stv06xx_vv6410.c

/*
 * Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher
 *		      Mark Cave-Ayland, Carlo E Prelz, Dick Streefland
 * Copyright (c) 2002, 2003 Tuukka Toivonen
 * Copyright (c) 2008 Erik Andrén
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * P/N 861037:      Sensor HDCS1000        ASIC STV0600
 * P/N 861050-0010: Sensor HDCS1000        ASIC STV0600
 * P/N 861050-0020: Sensor Photobit PB100  ASIC STV0600-1 - QuickCam Express
 * P/N 861055:      Sensor ST VV6410       ASIC STV0610   - LEGO cam
 * P/N 861075-0040: Sensor HDCS1000        ASIC
 * P/N 961179-0700: Sensor ST VV6410       ASIC STV0602   - Dexxa WebCam USB
 * P/N 861040-0000: Sensor ST VV6410       ASIC STV0610   - QuickCam Web
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include "stv06xx_vv6410.h"

static struct v4l2_pix_format vv6410_mode[] = {
	{
		356,
		292,
		V4L2_PIX_FMT_SGRBG8,
		V4L2_FIELD_NONE,
		.sizeimage = 356 * 292,
		.bytesperline = 356,
		.colorspace = V4L2_COLORSPACE_SRGB,
		.priv = 0
	}
};

static const struct ctrl vv6410_ctrl[] = {
#define HFLIP_IDX 0
	{
		{
			.id		= V4L2_CID_HFLIP,
			.type		= V4L2_CTRL_TYPE_BOOLEAN,
			.name		= "horizontal flip",
			.minimum	= 0,
			.maximum	= 1,
			.step		= 1,
			.default_value	= 0
		},
		.set = vv6410_set_hflip,
		.get = vv6410_get_hflip
	},
#define VFLIP_IDX 1
	{
		{
			.id		= V4L2_CID_VFLIP,
			.type		= V4L2_CTRL_TYPE_BOOLEAN,
			.name		= "vertical flip",
			.minimum	= 0,
			.maximum	= 1,
			.step		= 1,
			.default_value	= 0
		},
		.set = vv6410_set_vflip,
		.get = vv6410_get_vflip
	},
#define GAIN_IDX 2
	{
		{
			.id		= V4L2_CID_GAIN,
			.type		= V4L2_CTRL_TYPE_INTEGER,
			.name		= "analog gain",
			.minimum	= 0,
			.maximum	= 15,
			.step		= 1,
			.default_value  = 10
		},
		.set = vv6410_set_analog_gain,
		.get = vv6410_get_analog_gain
	},
#define EXPOSURE_IDX 3
	{
		{
			.id		= V4L2_CID_EXPOSURE,
			.type		= V4L2_CTRL_TYPE_INTEGER,
			.name		= "exposure",
			.minimum	= 0,
			.maximum	= 32768,
			.step		= 1,
			.default_value  = 20000
		},
		.set = vv6410_set_exposure,
		.get = vv6410_get_exposure
	}
	};

static int vv6410_probe(struct sd *sd)
{
	u16 data;
	int err, i;
	s32 *sensor_settings;

	err = stv06xx_read_sensor(sd, VV6410_DEVICEH, &data);
	if (err < 0)
		return -ENODEV;

	if (data == 0x19) {
		pr_info("vv6410 sensor detected\n");

		sensor_settings = kmalloc(ARRAY_SIZE(vv6410_ctrl) * sizeof(s32),
					  GFP_KERNEL);
		if (!sensor_settings)
			return -ENOMEM;

		sd->gspca_dev.cam.cam_mode = vv6410_mode;
		sd->gspca_dev.cam.nmodes = ARRAY_SIZE(vv6410_mode);
		sd->desc.ctrls = vv6410_ctrl;
		sd->desc.nctrls = ARRAY_SIZE(vv6410_ctrl);

		for (i = 0; i < sd->desc.nctrls; i++)
			sensor_settings[i] = vv6410_ctrl[i].qctrl.default_value;
		sd->sensor_priv = sensor_settings;
		return 0;
	}
	return -ENODEV;
}

static int vv6410_init(struct sd *sd)
{
	int err = 0, i;
	s32 *sensor_settings = sd->sensor_priv;

	for (i = 0; i < ARRAY_SIZE(stv_bridge_init); i++) {
		stv06xx_write_bridge(sd, stv_bridge_init[i].addr, stv_bridge_init[i].data);
	}

	if (err < 0)
		return err;

	err = stv06xx_write_sensor_bytes(sd, (u8 *) vv6410_sensor_init,
					 ARRAY_SIZE(vv6410_sensor_init));
	if (err < 0)
		return err;

	err = vv6410_set_exposure(&sd->gspca_dev,
				   sensor_settings[EXPOSURE_IDX]);
	if (err < 0)
		return err;

	err = vv6410_set_analog_gain(&sd->gspca_dev,
				      sensor_settings[GAIN_IDX]);

	return (err < 0) ? err : 0;
}

static void vv6410_disconnect(struct sd *sd)
{
	sd->sensor = NULL;
	kfree(sd->sensor_priv);
}

static int vv6410_start(struct sd *sd)
{
	int err;
	struct cam *cam = &sd->gspca_dev.cam;
	u32 priv = cam->cam_mode[sd->gspca_dev.curr_mode].priv;

	if (priv & VV6410_SUBSAMPLE) {
		PDEBUG(D_CONF, "Enabling subsampling");
		stv06xx_write_bridge(sd, STV_Y_CTRL, 0x02);
		stv06xx_write_bridge(sd, STV_X_CTRL, 0x06);

		stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x10);
	} else {
		stv06xx_write_bridge(sd, STV_Y_CTRL, 0x01);
		stv06xx_write_bridge(sd, STV_X_CTRL, 0x0a);
		stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x00);

	}

	/* Turn on LED */
	err = stv06xx_write_bridge(sd, STV_LED_CTRL, LED_ON);
	if (err < 0)
		return err;

	err = stv06xx_write_sensor(sd, VV6410_SETUP0, 0);
	if (err < 0)
		return err;

	PDEBUG(D_STREAM, "Starting stream");

	return 0;
}

static int vv6410_stop(struct sd *sd)
{
	int err;

	/* Turn off LED */
	err = stv06xx_write_bridge(sd, STV_LED_CTRL, LED_OFF);
	if (err < 0)
		return err;

	err = stv06xx_write_sensor(sd, VV6410_SETUP0, VV6410_LOW_POWER_MODE);
	if (err < 0)
		return err;

	PDEBUG(D_STREAM, "Halting stream");

	return (err < 0) ? err : 0;
}

static int vv6410_dump(struct sd *sd)
{
	u8 i;
	int err = 0;

	pr_info("Dumping all vv6410 sensor registers\n");
	for (i = 0; i < 0xff && !err; i++) {
		u16 data;
		err = stv06xx_read_sensor(sd, i, &data);
		pr_info("Register 0x%x contained 0x%x\n", i, data);
	}
	return (err < 0) ? err : 0;
}

static int vv6410_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;
	s32 *sensor_settings = sd->sensor_priv;

	*val = sensor_settings[HFLIP_IDX];
	PDEBUG(D_V4L2, "Read horizontal flip %d", *val);

	return 0;
}

static int vv6410_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
{
	int err;
	u16 i2c_data;
	struct sd *sd = (struct sd *) gspca_dev;
	s32 *sensor_settings = sd->sensor_priv;

	sensor_settings[HFLIP_IDX] = val;
	err = stv06xx_read_sensor(sd, VV6410_DATAFORMAT, &i2c_data);
	if (err < 0)
		return err;

	if (val)
		i2c_data |= VV6410_HFLIP;
	else
		i2c_data &= ~VV6410_HFLIP;

	PDEBUG(D_V4L2, "Set horizontal flip to %d", val);
	err = stv06xx_write_sensor(sd, VV6410_DATAFORMAT, i2c_data);

	return (err < 0) ? err : 0;
}

static int vv6410_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;
	s32 *sensor_settings = sd->sensor_priv;

	*val = sensor_settings[VFLIP_IDX];
	PDEBUG(D_V4L2, "Read vertical flip %d", *val);

	return 0;
}

static int vv6410_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
{
	int err;
	u16 i2c_data;
	struct sd *sd = (struct sd *) gspca_dev;
	s32 *sensor_settings = sd->sensor_priv;

	sensor_settings[VFLIP_IDX] = val;
	err = stv06xx_read_sensor(sd, VV6410_DATAFORMAT, &i2c_data);
	if (err < 0)
		return err;

	if (val)
		i2c_data |= VV6410_VFLIP;
	else
		i2c_data &= ~VV6410_VFLIP;

	PDEBUG(D_V4L2, "Set vertical flip to %d", val);
	err = stv06xx_write_sensor(sd, VV6410_DATAFORMAT, i2c_data);

	return (err < 0) ? err : 0;
}

static int vv6410_get_analog_gain(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;
	s32 *sensor_settings = sd->sensor_priv;

	*val = sensor_settings[GAIN_IDX];

	PDEBUG(D_V4L2, "Read analog gain %d", *val);

	return 0;
}

static int vv6410_set_analog_gain(struct gspca_dev *gspca_dev, __s32 val)
{
	int err;
	struct sd *sd = (struct sd *) gspca_dev;
	s32 *sensor_settings = sd->sensor_priv;

	sensor_settings[GAIN_IDX] = val;
	PDEBUG(D_V4L2, "Set analog gain to %d", val);
	err = stv06xx_write_sensor(sd, VV6410_ANALOGGAIN, 0xf0 | (val & 0xf));

	return (err < 0) ? err : 0;
}

static int vv6410_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;
	s32 *sensor_settings = sd->sensor_priv;

	*val = sensor_settings[EXPOSURE_IDX];

	PDEBUG(D_V4L2, "Read exposure %d", *val);

	return 0;
}

static int vv6410_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
{
	int err;
	struct sd *sd = (struct sd *) gspca_dev;
	s32 *sensor_settings = sd->sensor_priv;
	unsigned int fine, coarse;

	sensor_settings[EXPOSURE_IDX] = val;

	val = (val * val >> 14) + val / 4;

	fine = val % VV6410_CIF_LINELENGTH;
	coarse = min(512, val / VV6410_CIF_LINELENGTH);

	PDEBUG(D_V4L2, "Set coarse exposure to %d, fine expsure to %d",
	       coarse, fine);

	err = stv06xx_write_sensor(sd, VV6410_FINEH, fine >> 8);
	if (err < 0)
		goto out;

	err = stv06xx_write_sensor(sd, VV6410_FINEL, fine & 0xff);
	if (err < 0)
		goto out;

	err = stv06xx_write_sensor(sd, VV6410_COARSEH, coarse >> 8);
	if (err < 0)
		goto out;

	err = stv06xx_write_sensor(sd, VV6410_COARSEL, coarse & 0xff);

out:
	return err;
}
Commit	Line	Data
4c98834a EA	1	/*
	2	* Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher
	3	* Mark Cave-Ayland, Carlo E Prelz, Dick Streefland
	4	* Copyright (c) 2002, 2003 Tuukka Toivonen
	5	* Copyright (c) 2008 Erik Andrén
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	20	*
	21	* P/N 861037: Sensor HDCS1000 ASIC STV0600
	22	* P/N 861050-0010: Sensor HDCS1000 ASIC STV0600
	23	* P/N 861050-0020: Sensor Photobit PB100 ASIC STV0600-1 - QuickCam Express
	24	* P/N 861055: Sensor ST VV6410 ASIC STV0610 - LEGO cam
	25	* P/N 861075-0040: Sensor HDCS1000 ASIC
	26	* P/N 961179-0700: Sensor ST VV6410 ASIC STV0602 - Dexxa WebCam USB
	27	* P/N 861040-0000: Sensor ST VV6410 ASIC STV0610 - QuickCam Web
	28	*/
	29
133a9fe9 JP	30	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
133a9fe9 JP	31
4c98834a EA	32	#include "stv06xx_vv6410.h"
4c98834a EA	33
766231ab EA	34	static struct v4l2_pix_format vv6410_mode[] = {
	35	{
	36	356,
	37	292,
	38	V4L2_PIX_FMT_SGRBG8,
	39	V4L2_FIELD_NONE,
	40	.sizeimage = 356 * 292,
	41	.bytesperline = 356,
	42	.colorspace = V4L2_COLORSPACE_SRGB,
	43	.priv = 0
	44	}
	45	};
	46
	47	static const struct ctrl vv6410_ctrl[] = {
5658ae90	48	#define HFLIP_IDX 0
766231ab EA	49	{
	50	{
	51	.id = V4L2_CID_HFLIP,
	52	.type = V4L2_CTRL_TYPE_BOOLEAN,
	53	.name = "horizontal flip",
	54	.minimum = 0,
	55	.maximum = 1,
	56	.step = 1,
	57	.default_value = 0
	58	},
	59	.set = vv6410_set_hflip,
	60	.get = vv6410_get_hflip
5658ae90 EA	61	},
	62	#define VFLIP_IDX 1
	63	{
766231ab EA	64	{
	65	.id = V4L2_CID_VFLIP,
	66	.type = V4L2_CTRL_TYPE_BOOLEAN,
	67	.name = "vertical flip",
	68	.minimum = 0,
	69	.maximum = 1,
	70	.step = 1,
780e3121	71	.default_value = 0
766231ab EA	72	},
	73	.set = vv6410_set_vflip,
	74	.get = vv6410_get_vflip
5658ae90 EA	75	},
	76	#define GAIN_IDX 2
	77	{
766231ab EA	78	{
	79	.id = V4L2_CID_GAIN,
	80	.type = V4L2_CTRL_TYPE_INTEGER,
	81	.name = "analog gain",
	82	.minimum = 0,
	83	.maximum = 15,
	84	.step = 1,
17720e07	85	.default_value = 10
766231ab EA	86	},
	87	.set = vv6410_set_analog_gain,
	88	.get = vv6410_get_analog_gain
1906d8d1 EA	89	},
	90	#define EXPOSURE_IDX 3
	91	{
	92	{
	93	.id = V4L2_CID_EXPOSURE,
	94	.type = V4L2_CTRL_TYPE_INTEGER,
	95	.name = "exposure",
	96	.minimum = 0,
	97	.maximum = 32768,
	98	.step = 1,
	99	.default_value = 20000
	100	},
	101	.set = vv6410_set_exposure,
	102	.get = vv6410_get_exposure
766231ab	103	}
1906d8d1	104	};
766231ab	105
4c98834a EA	106	static int vv6410_probe(struct sd *sd)
	107	{
	108	u16 data;
5658ae90 EA	109	int err, i;
5658ae90 EA	110	s32 *sensor_settings;
4c98834a EA	111
4c98834a EA	112	err = stv06xx_read_sensor(sd, VV6410_DEVICEH, &data);
4c98834a EA	113	if (err < 0)
	114	return -ENODEV;
	115
	116	if (data == 0x19) {
133a9fe9	117	pr_info("vv6410 sensor detected\n");
4c98834a	118
5658ae90 EA	119	sensor_settings = kmalloc(ARRAY_SIZE(vv6410_ctrl) * sizeof(s32),
	120	GFP_KERNEL);
	121	if (!sensor_settings)
	122	return -ENOMEM;
	123
766231ab EA	124	sd->gspca_dev.cam.cam_mode = vv6410_mode;
	125	sd->gspca_dev.cam.nmodes = ARRAY_SIZE(vv6410_mode);
	126	sd->desc.ctrls = vv6410_ctrl;
	127	sd->desc.nctrls = ARRAY_SIZE(vv6410_ctrl);
5658ae90 EA	128
	129	for (i = 0; i < sd->desc.nctrls; i++)
	130	sensor_settings[i] = vv6410_ctrl[i].qctrl.default_value;
	131	sd->sensor_priv = sensor_settings;
4c98834a EA	132	return 0;
4c98834a EA	133	}
4c98834a EA	134	return -ENODEV;
	135	}
	136
	137	static int vv6410_init(struct sd *sd)
	138	{
	139	int err = 0, i;
1906d8d1	140	s32 *sensor_settings = sd->sensor_priv;
4c98834a EA	141
4c98834a EA	142	for (i = 0; i < ARRAY_SIZE(stv_bridge_init); i++) {
46fecfaf	143	stv06xx_write_bridge(sd, stv_bridge_init[i].addr, stv_bridge_init[i].data);
4c98834a EA	144	}
	145
	146	if (err < 0)
	147	return err;
	148
	149	err = stv06xx_write_sensor_bytes(sd, (u8 *) vv6410_sensor_init,
	150	ARRAY_SIZE(vv6410_sensor_init));
1906d8d1 EA	151	if (err < 0)
	152	return err;
	153
	154	err = vv6410_set_exposure(&sd->gspca_dev,
	155	sensor_settings[EXPOSURE_IDX]);
17720e07 EA	156	if (err < 0)
	157	return err;
	158
	159	err = vv6410_set_analog_gain(&sd->gspca_dev,
	160	sensor_settings[GAIN_IDX]);
4c98834a EA	161
	162	return (err < 0) ? err : 0;
	163	}
	164
5658ae90 EA	165	static void vv6410_disconnect(struct sd *sd)
	166	{
	167	sd->sensor = NULL;
	168	kfree(sd->sensor_priv);
	169	}
	170
4c98834a EA	171	static int vv6410_start(struct sd *sd)
	172	{
	173	int err;
	174	struct cam *cam = &sd->gspca_dev.cam;
	175	u32 priv = cam->cam_mode[sd->gspca_dev.curr_mode].priv;
	176
4c98834a EA	177	if (priv & VV6410_SUBSAMPLE) {
	178	PDEBUG(D_CONF, "Enabling subsampling");
	179	stv06xx_write_bridge(sd, STV_Y_CTRL, 0x02);
	180	stv06xx_write_bridge(sd, STV_X_CTRL, 0x06);
	181
	182	stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x10);
	183	} else {
	184	stv06xx_write_bridge(sd, STV_Y_CTRL, 0x01);
	185	stv06xx_write_bridge(sd, STV_X_CTRL, 0x0a);
eaceba65	186	stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x00);
4c98834a	187
4c98834a EA	188	}
	189
	190	/* Turn on LED */
	191	err = stv06xx_write_bridge(sd, STV_LED_CTRL, LED_ON);
	192	if (err < 0)
	193	return err;
	194
	195	err = stv06xx_write_sensor(sd, VV6410_SETUP0, 0);
	196	if (err < 0)
	197	return err;
	198
	199	PDEBUG(D_STREAM, "Starting stream");
	200
	201	return 0;
	202	}
	203
	204	static int vv6410_stop(struct sd *sd)
	205	{
	206	int err;
	207
	208	/* Turn off LED */
	209	err = stv06xx_write_bridge(sd, STV_LED_CTRL, LED_OFF);
	210	if (err < 0)
	211	return err;
	212
	213	err = stv06xx_write_sensor(sd, VV6410_SETUP0, VV6410_LOW_POWER_MODE);
	214	if (err < 0)
	215	return err;
	216
	217	PDEBUG(D_STREAM, "Halting stream");
	218
	219	return (err < 0) ? err : 0;
	220	}
	221
	222	static int vv6410_dump(struct sd *sd)
	223	{
	224	u8 i;
	225	int err = 0;
	226
133a9fe9	227	pr_info("Dumping all vv6410 sensor registers\n");
4c98834a EA	228	for (i = 0; i < 0xff && !err; i++) {
	229	u16 data;
	230	err = stv06xx_read_sensor(sd, i, &data);
133a9fe9	231	pr_info("Register 0x%x contained 0x%x\n", i, data);
4c98834a EA	232	}
	233	return (err < 0) ? err : 0;
	234	}
	235
	236	static int vv6410_get_hflip(struct gspca_dev gspca_dev, __s32 val)
	237	{
4c98834a	238	struct sd sd = (struct sd ) gspca_dev;
5658ae90	239	s32 *sensor_settings = sd->sensor_priv;
4c98834a	240
5658ae90	241	*val = sensor_settings[HFLIP_IDX];
4c98834a EA	242	PDEBUG(D_V4L2, "Read horizontal flip %d", *val);
4c98834a EA	243
5658ae90	244	return 0;
4c98834a EA	245	}
	246
	247	static int vv6410_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
	248	{
	249	int err;
	250	u16 i2c_data;
	251	struct sd sd = (struct sd ) gspca_dev;
5658ae90 EA	252	s32 *sensor_settings = sd->sensor_priv;
	253
	254	sensor_settings[HFLIP_IDX] = val;
4c98834a EA	255	err = stv06xx_read_sensor(sd, VV6410_DATAFORMAT, &i2c_data);
	256	if (err < 0)
	257	return err;
	258
	259	if (val)
	260	i2c_data \|= VV6410_HFLIP;
	261	else
	262	i2c_data &= ~VV6410_HFLIP;
	263
	264	PDEBUG(D_V4L2, "Set horizontal flip to %d", val);
	265	err = stv06xx_write_sensor(sd, VV6410_DATAFORMAT, i2c_data);
	266
	267	return (err < 0) ? err : 0;
	268	}
	269
	270	static int vv6410_get_vflip(struct gspca_dev gspca_dev, __s32 val)
	271	{
4c98834a	272	struct sd sd = (struct sd ) gspca_dev;
5658ae90	273	s32 *sensor_settings = sd->sensor_priv;
4c98834a	274
5658ae90	275	*val = sensor_settings[VFLIP_IDX];
4c98834a EA	276	PDEBUG(D_V4L2, "Read vertical flip %d", *val);
4c98834a EA	277
5658ae90	278	return 0;
4c98834a EA	279	}
	280
	281	static int vv6410_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
	282	{
	283	int err;
	284	u16 i2c_data;
	285	struct sd sd = (struct sd ) gspca_dev;
5658ae90 EA	286	s32 *sensor_settings = sd->sensor_priv;
	287
	288	sensor_settings[VFLIP_IDX] = val;
4c98834a EA	289	err = stv06xx_read_sensor(sd, VV6410_DATAFORMAT, &i2c_data);
	290	if (err < 0)
	291	return err;
	292
	293	if (val)
	294	i2c_data \|= VV6410_VFLIP;
	295	else
	296	i2c_data &= ~VV6410_VFLIP;
	297
	298	PDEBUG(D_V4L2, "Set vertical flip to %d", val);
	299	err = stv06xx_write_sensor(sd, VV6410_DATAFORMAT, i2c_data);
	300
	301	return (err < 0) ? err : 0;
	302	}
	303
	304	static int vv6410_get_analog_gain(struct gspca_dev gspca_dev, __s32 val)
	305	{
4c98834a	306	struct sd sd = (struct sd ) gspca_dev;
5658ae90	307	s32 *sensor_settings = sd->sensor_priv;
4c98834a	308
5658ae90	309	*val = sensor_settings[GAIN_IDX];
4c98834a EA	310
	311	PDEBUG(D_V4L2, "Read analog gain %d", *val);
	312
5658ae90	313	return 0;
4c98834a EA	314	}
	315
	316	static int vv6410_set_analog_gain(struct gspca_dev *gspca_dev, __s32 val)
	317	{
	318	int err;
	319	struct sd sd = (struct sd ) gspca_dev;
5658ae90	320	s32 *sensor_settings = sd->sensor_priv;
4c98834a	321
5658ae90	322	sensor_settings[GAIN_IDX] = val;
4c98834a EA	323	PDEBUG(D_V4L2, "Set analog gain to %d", val);
	324	err = stv06xx_write_sensor(sd, VV6410_ANALOGGAIN, 0xf0 \| (val & 0xf));
	325
	326	return (err < 0) ? err : 0;
	327	}
1906d8d1 EA	328
	329	static int vv6410_get_exposure(struct gspca_dev gspca_dev, __s32 val)
	330	{
	331	struct sd sd = (struct sd ) gspca_dev;
	332	s32 *sensor_settings = sd->sensor_priv;
	333
	334	*val = sensor_settings[EXPOSURE_IDX];
	335
	336	PDEBUG(D_V4L2, "Read exposure %d", *val);
	337
	338	return 0;
	339	}
	340
	341	static int vv6410_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
	342	{
	343	int err;
	344	struct sd sd = (struct sd ) gspca_dev;
	345	s32 *sensor_settings = sd->sensor_priv;
	346	unsigned int fine, coarse;
	347
	348	sensor_settings[EXPOSURE_IDX] = val;
	349
	350	val = (val * val >> 14) + val / 4;
	351
	352	fine = val % VV6410_CIF_LINELENGTH;
	353	coarse = min(512, val / VV6410_CIF_LINELENGTH);
	354
	355	PDEBUG(D_V4L2, "Set coarse exposure to %d, fine expsure to %d",
	356	coarse, fine);
	357
	358	err = stv06xx_write_sensor(sd, VV6410_FINEH, fine >> 8);
	359	if (err < 0)
	360	goto out;
	361
	362	err = stv06xx_write_sensor(sd, VV6410_FINEL, fine & 0xff);
	363	if (err < 0)
	364	goto out;
	365
	366	err = stv06xx_write_sensor(sd, VV6410_COARSEH, coarse >> 8);
	367	if (err < 0)
	368	goto out;
	369
	370	err = stv06xx_write_sensor(sd, VV6410_COARSEL, coarse & 0xff);
	371
	372	out:
	373	return err;
	374	}