[mirror_ubuntu-artful-kernel.git] / drivers / media / video / adv7175.c

/*
 *  adv7175 - adv7175a video encoder driver version 0.0.3
 *
 * Copyright (C) 1998 Dave Perks <dperks@ibm.net>
 * Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net>
 * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
 *    - some corrections for Pinnacle Systems Inc. DC10plus card.
 *
 * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
 *    - moved over to linux>=2.4.x i2c protocol (9/9/2002)
 *
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/module.h>
#include <linux/types.h>
#include <linux/ioctl.h>
#include <asm/uaccess.h>
#include <linux/i2c.h>
#include <linux/i2c-id.h>
#include <linux/videodev.h>
#include <linux/video_encoder.h>
#include <media/v4l2-common.h>
#include <media/v4l2-i2c-drv-legacy.h>

MODULE_DESCRIPTION("Analog Devices ADV7175 video encoder driver");
MODULE_AUTHOR("Dave Perks");
MODULE_LICENSE("GPL");

static int debug;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0-1)");

/* ----------------------------------------------------------------------- */

struct adv7175 {
	int norm;
	int input;
	int enable;
	int bright;
	int contrast;
	int hue;
	int sat;
};

#define   I2C_ADV7175        0xd4
#define   I2C_ADV7176        0x54

static char *inputs[] = { "pass_through", "play_back", "color_bar" };
static char *norms[] = { "PAL", "NTSC", "SECAM->PAL (may not work!)" };

/* ----------------------------------------------------------------------- */

static inline int adv7175_write(struct i2c_client *client, u8 reg, u8 value)
{
	return i2c_smbus_write_byte_data(client, reg, value);
}

static inline int adv7175_read(struct i2c_client *client, u8 reg)
{
	return i2c_smbus_read_byte_data(client, reg);
}

static int adv7175_write_block(struct i2c_client *client,
		     const u8 *data, unsigned int len)
{
	int ret = -1;
	u8 reg;

	/* the adv7175 has an autoincrement function, use it if
	 * the adapter understands raw I2C */
	if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
		/* do raw I2C, not smbus compatible */
		u8 block_data[32];
		int block_len;

		while (len >= 2) {
			block_len = 0;
			block_data[block_len++] = reg = data[0];
			do {
				block_data[block_len++] = data[1];
				reg++;
				len -= 2;
				data += 2;
			} while (len >= 2 && data[0] == reg && block_len < 32);
			ret = i2c_master_send(client, block_data, block_len);
			if (ret < 0)
				break;
		}
	} else {
		/* do some slow I2C emulation kind of thing */
		while (len >= 2) {
			reg = *data++;
			ret = adv7175_write(client, reg, *data++);
			if (ret < 0)
				break;
			len -= 2;
		}
	}

	return ret;
}

static void set_subcarrier_freq(struct i2c_client *client, int pass_through)
{
	/* for some reason pass_through NTSC needs
	 * a different sub-carrier freq to remain stable. */
	if (pass_through)
		adv7175_write(client, 0x02, 0x00);
	else
		adv7175_write(client, 0x02, 0x55);

	adv7175_write(client, 0x03, 0x55);
	adv7175_write(client, 0x04, 0x55);
	adv7175_write(client, 0x05, 0x25);
}

/* ----------------------------------------------------------------------- */
/* Output filter:  S-Video  Composite */

#define MR050       0x11	/* 0x09 */
#define MR060       0x14	/* 0x0c */

/* ----------------------------------------------------------------------- */

#define TR0MODE     0x46
#define TR0RST	    0x80

#define TR1CAPT	    0x80
#define TR1PLAY	    0x00

static const unsigned char init_common[] = {

	0x00, MR050,		/* MR0, PAL enabled */
	0x01, 0x00,		/* MR1 */
	0x02, 0x0c,		/* subc. freq. */
	0x03, 0x8c,		/* subc. freq. */
	0x04, 0x79,		/* subc. freq. */
	0x05, 0x26,		/* subc. freq. */
	0x06, 0x40,		/* subc. phase */

	0x07, TR0MODE,		/* TR0, 16bit */
	0x08, 0x21,		/*  */
	0x09, 0x00,		/*  */
	0x0a, 0x00,		/*  */
	0x0b, 0x00,		/*  */
	0x0c, TR1CAPT,		/* TR1 */
	0x0d, 0x4f,		/* MR2 */
	0x0e, 0x00,		/*  */
	0x0f, 0x00,		/*  */
	0x10, 0x00,		/*  */
	0x11, 0x00,		/*  */
};

static const unsigned char init_pal[] = {
	0x00, MR050,		/* MR0, PAL enabled */
	0x01, 0x00,		/* MR1 */
	0x02, 0x0c,		/* subc. freq. */
	0x03, 0x8c,		/* subc. freq. */
	0x04, 0x79,		/* subc. freq. */
	0x05, 0x26,		/* subc. freq. */
	0x06, 0x40,		/* subc. phase */
};

static const unsigned char init_ntsc[] = {
	0x00, MR060,		/* MR0, NTSC enabled */
	0x01, 0x00,		/* MR1 */
	0x02, 0x55,		/* subc. freq. */
	0x03, 0x55,		/* subc. freq. */
	0x04, 0x55,		/* subc. freq. */
	0x05, 0x25,		/* subc. freq. */
	0x06, 0x1a,		/* subc. phase */
};

static int adv7175_command(struct i2c_client *client, unsigned cmd, void *arg)
{
	struct adv7175 *encoder = i2c_get_clientdata(client);

	switch (cmd) {
	case 0:
		/* This is just for testing!!! */
		adv7175_write_block(client, init_common,
				    sizeof(init_common));
		adv7175_write(client, 0x07, TR0MODE | TR0RST);
		adv7175_write(client, 0x07, TR0MODE);
		break;

	case ENCODER_GET_CAPABILITIES:
	{
		struct video_encoder_capability *cap = arg;

		cap->flags = VIDEO_ENCODER_PAL |
			     VIDEO_ENCODER_NTSC |
			     VIDEO_ENCODER_SECAM; /* well, hacky */
		cap->inputs = 2;
		cap->outputs = 1;
		break;
	}

	case ENCODER_SET_NORM:
	{
		int iarg = *(int *) arg;

		switch (iarg) {
		case VIDEO_MODE_NTSC:
			adv7175_write_block(client, init_ntsc,
					    sizeof(init_ntsc));
			if (encoder->input == 0)
				adv7175_write(client, 0x0d, 0x4f);	// Enable genlock
			adv7175_write(client, 0x07, TR0MODE | TR0RST);
			adv7175_write(client, 0x07, TR0MODE);
			break;

		case VIDEO_MODE_PAL:
			adv7175_write_block(client, init_pal,
					    sizeof(init_pal));
			if (encoder->input == 0)
				adv7175_write(client, 0x0d, 0x4f);	// Enable genlock
			adv7175_write(client, 0x07, TR0MODE | TR0RST);
			adv7175_write(client, 0x07, TR0MODE);
			break;

		case VIDEO_MODE_SECAM:	// WARNING! ADV7176 does not support SECAM.
			/* This is an attempt to convert
			 * SECAM->PAL (typically it does not work
			 * due to genlock: when decoder is in SECAM
			 * and encoder in in PAL the subcarrier can
			 * not be syncronized with horizontal
			 * quency) */
			adv7175_write_block(client, init_pal,
					    sizeof(init_pal));
			if (encoder->input == 0)
				adv7175_write(client, 0x0d, 0x49);	// Disable genlock
			adv7175_write(client, 0x07, TR0MODE | TR0RST);
			adv7175_write(client, 0x07, TR0MODE);
			break;
		default:
			v4l_dbg(1, debug, client, "illegal norm: %d\n", iarg);
			return -EINVAL;
		}
		v4l_dbg(1, debug, client, "switched to %s\n", norms[iarg]);
		encoder->norm = iarg;
		break;
	}

	case ENCODER_SET_INPUT:
	{
		int iarg = *(int *) arg;

		/* RJ: *iarg = 0: input is from SAA7110
		 *iarg = 1: input is from ZR36060
		 *iarg = 2: color bar */

		switch (iarg) {
		case 0:
			adv7175_write(client, 0x01, 0x00);

			if (encoder->norm == VIDEO_MODE_NTSC)
				set_subcarrier_freq(client, 1);

			adv7175_write(client, 0x0c, TR1CAPT);	/* TR1 */
			if (encoder->norm == VIDEO_MODE_SECAM)
				adv7175_write(client, 0x0d, 0x49);	// Disable genlock
			else
				adv7175_write(client, 0x0d, 0x4f);	// Enable genlock
			adv7175_write(client, 0x07, TR0MODE | TR0RST);
			adv7175_write(client, 0x07, TR0MODE);
			//udelay(10);
			break;

		case 1:
			adv7175_write(client, 0x01, 0x00);

			if (encoder->norm == VIDEO_MODE_NTSC)
				set_subcarrier_freq(client, 0);

			adv7175_write(client, 0x0c, TR1PLAY);	/* TR1 */
			adv7175_write(client, 0x0d, 0x49);
			adv7175_write(client, 0x07, TR0MODE | TR0RST);
			adv7175_write(client, 0x07, TR0MODE);
			/* udelay(10); */
			break;

		case 2:
			adv7175_write(client, 0x01, 0x80);

			if (encoder->norm == VIDEO_MODE_NTSC)
				set_subcarrier_freq(client, 0);

			adv7175_write(client, 0x0d, 0x49);
			adv7175_write(client, 0x07, TR0MODE | TR0RST);
			adv7175_write(client, 0x07, TR0MODE);
			/* udelay(10); */
			break;

		default:
			v4l_dbg(1, debug, client, "illegal input: %d\n", iarg);
			return -EINVAL;
		}
		v4l_dbg(1, debug, client, "switched to %s\n", inputs[iarg]);
		encoder->input = iarg;
		break;
	}

	case ENCODER_SET_OUTPUT:
	{
		int *iarg = arg;

		/* not much choice of outputs */
		if (*iarg != 0)
			return -EINVAL;
		break;
	}

	case ENCODER_ENABLE_OUTPUT:
	{
		int *iarg = arg;

		encoder->enable = !!*iarg;
		break;
	}

	default:
		return -EINVAL;
	}

	return 0;
}

/* ----------------------------------------------------------------------- */

/*
 * Generic i2c probe
 * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
 */
static unsigned short normal_i2c[] = {
	I2C_ADV7175 >> 1, (I2C_ADV7175 >> 1) + 1,
	I2C_ADV7176 >> 1, (I2C_ADV7176 >> 1) + 1,
	I2C_CLIENT_END
};

I2C_CLIENT_INSMOD;

static int adv7175_probe(struct i2c_client *client,
			const struct i2c_device_id *id)
{
	int i;
	struct adv7175 *encoder;

	/* Check if the adapter supports the needed features */
	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
		return -ENODEV;

	v4l_info(client, "chip found @ 0x%x (%s)\n",
			client->addr << 1, client->adapter->name);

	encoder = kzalloc(sizeof(struct adv7175), GFP_KERNEL);
	if (encoder == NULL)
		return -ENOMEM;
	encoder->norm = VIDEO_MODE_PAL;
	encoder->input = 0;
	encoder->enable = 1;
	i2c_set_clientdata(client, encoder);

	i = adv7175_write_block(client, init_common, sizeof(init_common));
	if (i >= 0) {
		i = adv7175_write(client, 0x07, TR0MODE | TR0RST);
		i = adv7175_write(client, 0x07, TR0MODE);
		i = adv7175_read(client, 0x12);
		v4l_dbg(1, debug, client, "revision %d\n", i & 1);
	}
	if (i < 0)
		v4l_dbg(1, debug, client, "init error 0x%x\n", i);
	return 0;
}

static int adv7175_remove(struct i2c_client *client)
{
	kfree(i2c_get_clientdata(client));
	return 0;
}

/* ----------------------------------------------------------------------- */

static const struct i2c_device_id adv7175_id[] = {
	{ "adv7175", 0 },
	{ "adv7176", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, adv7175_id);

static struct v4l2_i2c_driver_data v4l2_i2c_data = {
	.name = "adv7175",
	.driverid = I2C_DRIVERID_ADV7175,
	.command = adv7175_command,
	.probe = adv7175_probe,
	.remove = adv7175_remove,
	.id_table = adv7175_id,
};
Commit	Line	Data
d56410e0	1	/*
1da177e4 LT	2	* adv7175 - adv7175a video encoder driver version 0.0.3
	3	*
	4	* Copyright (C) 1998 Dave Perks <dperks@ibm.net>
	5	* Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net>
	6	* Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
	7	* - some corrections for Pinnacle Systems Inc. DC10plus card.
	8	*
	9	* Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
	10	* - moved over to linux>=2.4.x i2c protocol (9/9/2002)
	11	*
	12	* This program is free software; you can redistribute it and/or modify
	13	* it under the terms of the GNU General Public License as published by
	14	* the Free Software Foundation; either version 2 of the License, or
	15	* (at your option) any later version.
	16	*
	17	* This program is distributed in the hope that it will be useful,
	18	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	20	* GNU General Public License for more details.
	21	*
	22	* You should have received a copy of the GNU General Public License
	23	* along with this program; if not, write to the Free Software
	24	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	25	*/
	26
	27	#include <linux/module.h>
18f3fa1e	28	#include <linux/types.h>
bba0d982	29	#include <linux/ioctl.h>
18f3fa1e	30	#include <asm/uaccess.h>
bba0d982 HV	31	#include <linux/i2c.h>
bba0d982 HV	32	#include <linux/i2c-id.h>
1da177e4	33	#include <linux/videodev.h>
18f3fa1e	34	#include <linux/video_encoder.h>
bba0d982 HV	35	#include <media/v4l2-common.h>
bba0d982 HV	36	#include <media/v4l2-i2c-drv-legacy.h>
1da177e4 LT	37
	38	MODULE_DESCRIPTION("Analog Devices ADV7175 video encoder driver");
	39	MODULE_AUTHOR("Dave Perks");
	40	MODULE_LICENSE("GPL");
	41
ff699e6b	42	static int debug;
1da177e4 LT	43	module_param(debug, int, 0);
	44	MODULE_PARM_DESC(debug, "Debug level (0-1)");
	45
1da177e4 LT	46	/* ----------------------------------------------------------------------- */
	47
	48	struct adv7175 {
1da177e4 LT	49	int norm;
	50	int input;
	51	int enable;
	52	int bright;
	53	int contrast;
	54	int hue;
	55	int sat;
	56	};
	57
	58	#define I2C_ADV7175 0xd4
	59	#define I2C_ADV7176 0x54
	60
1da177e4 LT	61	static char *inputs[] = { "pass_through", "play_back", "color_bar" };
	62	static char *norms[] = { "PAL", "NTSC", "SECAM->PAL (may not work!)" };
	63
	64	/* ----------------------------------------------------------------------- */
	65
bba0d982	66	static inline int adv7175_write(struct i2c_client *client, u8 reg, u8 value)
1da177e4	67	{
1da177e4 LT	68	return i2c_smbus_write_byte_data(client, reg, value);
	69	}
	70
bba0d982	71	static inline int adv7175_read(struct i2c_client *client, u8 reg)
1da177e4 LT	72	{
	73	return i2c_smbus_read_byte_data(client, reg);
	74	}
	75
bba0d982 HV	76	static int adv7175_write_block(struct i2c_client *client,
bba0d982 HV	77	const u8 *data, unsigned int len)
1da177e4 LT	78	{
	79	int ret = -1;
	80	u8 reg;
	81
	82	/* the adv7175 has an autoincrement function, use it if
	83	* the adapter understands raw I2C */
	84	if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
	85	/* do raw I2C, not smbus compatible */
1da177e4	86	u8 block_data[32];
9aa45e34	87	int block_len;
1da177e4	88
1da177e4	89	while (len >= 2) {
9aa45e34 JD	90	block_len = 0;
9aa45e34 JD	91	block_data[block_len++] = reg = data[0];
1da177e4	92	do {
9aa45e34	93	block_data[block_len++] = data[1];
2467a670	94	reg++;
1da177e4 LT	95	len -= 2;
1da177e4 LT	96	data += 2;
bba0d982 HV	97	} while (len >= 2 && data[0] == reg && block_len < 32);
	98	ret = i2c_master_send(client, block_data, block_len);
	99	if (ret < 0)
1da177e4 LT	100	break;
	101	}
	102	} else {
	103	/* do some slow I2C emulation kind of thing */
	104	while (len >= 2) {
	105	reg = *data++;
bba0d982 HV	106	ret = adv7175_write(client, reg, *data++);
bba0d982 HV	107	if (ret < 0)
1da177e4 LT	108	break;
	109	len -= 2;
	110	}
	111	}
	112
	113	return ret;
	114	}
	115
bba0d982	116	static void set_subcarrier_freq(struct i2c_client *client, int pass_through)
1da177e4 LT	117	{
	118	/* for some reason pass_through NTSC needs
	119	* a different sub-carrier freq to remain stable. */
bba0d982	120	if (pass_through)
1da177e4 LT	121	adv7175_write(client, 0x02, 0x00);
	122	else
	123	adv7175_write(client, 0x02, 0x55);
	124
	125	adv7175_write(client, 0x03, 0x55);
	126	adv7175_write(client, 0x04, 0x55);
	127	adv7175_write(client, 0x05, 0x25);
	128	}
	129
1da177e4	130	/* ----------------------------------------------------------------------- */
bba0d982	131	/* Output filter: S-Video Composite */
1da177e4	132
bba0d982 HV	133	#define MR050 0x11 /* 0x09 */
bba0d982 HV	134	#define MR060 0x14 /* 0x0c */
1da177e4	135
bba0d982	136	/* ----------------------------------------------------------------------- */
1da177e4 LT	137
	138	#define TR0MODE 0x46
	139	#define TR0RST 0x80
	140
	141	#define TR1CAPT 0x80
	142	#define TR1PLAY 0x00
	143
	144	static const unsigned char init_common[] = {
	145
	146	0x00, MR050, /* MR0, PAL enabled */
	147	0x01, 0x00, /* MR1 */
	148	0x02, 0x0c, /* subc. freq. */
	149	0x03, 0x8c, /* subc. freq. */
	150	0x04, 0x79, /* subc. freq. */
	151	0x05, 0x26, /* subc. freq. */
	152	0x06, 0x40, /* subc. phase */
	153
	154	0x07, TR0MODE, /* TR0, 16bit */
	155	0x08, 0x21, /* */
	156	0x09, 0x00, /* */
	157	0x0a, 0x00, /* */
	158	0x0b, 0x00, /* */
	159	0x0c, TR1CAPT, /* TR1 */
	160	0x0d, 0x4f, /* MR2 */
	161	0x0e, 0x00, /* */
	162	0x0f, 0x00, /* */
	163	0x10, 0x00, /* */
	164	0x11, 0x00, /* */
	165	};
	166
	167	static const unsigned char init_pal[] = {
	168	0x00, MR050, /* MR0, PAL enabled */
	169	0x01, 0x00, /* MR1 */
	170	0x02, 0x0c, /* subc. freq. */
	171	0x03, 0x8c, /* subc. freq. */
	172	0x04, 0x79, /* subc. freq. */
	173	0x05, 0x26, /* subc. freq. */
	174	0x06, 0x40, /* subc. phase */
	175	};
	176
	177	static const unsigned char init_ntsc[] = {
	178	0x00, MR060, /* MR0, NTSC enabled */
	179	0x01, 0x00, /* MR1 */
	180	0x02, 0x55, /* subc. freq. */
	181	0x03, 0x55, /* subc. freq. */
	182	0x04, 0x55, /* subc. freq. */
	183	0x05, 0x25, /* subc. freq. */
	184	0x06, 0x1a, /* subc. phase */
	185	};
	186
bba0d982	187	static int adv7175_command(struct i2c_client client, unsigned cmd, void arg)
1da177e4 LT	188	{
	189	struct adv7175 *encoder = i2c_get_clientdata(client);
	190
	191	switch (cmd) {
1da177e4 LT	192	case 0:
	193	/* This is just for testing!!! */
	194	adv7175_write_block(client, init_common,
	195	sizeof(init_common));
	196	adv7175_write(client, 0x07, TR0MODE \| TR0RST);
	197	adv7175_write(client, 0x07, TR0MODE);
d56410e0	198	break;
1da177e4 LT	199
	200	case ENCODER_GET_CAPABILITIES:
	201	{
	202	struct video_encoder_capability *cap = arg;
	203
	204	cap->flags = VIDEO_ENCODER_PAL \|
	205	VIDEO_ENCODER_NTSC \|
	206	VIDEO_ENCODER_SECAM; /* well, hacky */
	207	cap->inputs = 2;
	208	cap->outputs = 1;
1da177e4	209	break;
bba0d982	210	}
1da177e4 LT	211
	212	case ENCODER_SET_NORM:
	213	{
	214	int iarg = (int ) arg;
	215
	216	switch (iarg) {
1da177e4 LT	217	case VIDEO_MODE_NTSC:
	218	adv7175_write_block(client, init_ntsc,
	219	sizeof(init_ntsc));
	220	if (encoder->input == 0)
	221	adv7175_write(client, 0x0d, 0x4f); // Enable genlock
	222	adv7175_write(client, 0x07, TR0MODE \| TR0RST);
	223	adv7175_write(client, 0x07, TR0MODE);
	224	break;
	225
	226	case VIDEO_MODE_PAL:
	227	adv7175_write_block(client, init_pal,
	228	sizeof(init_pal));
	229	if (encoder->input == 0)
	230	adv7175_write(client, 0x0d, 0x4f); // Enable genlock
	231	adv7175_write(client, 0x07, TR0MODE \| TR0RST);
	232	adv7175_write(client, 0x07, TR0MODE);
	233	break;
	234
	235	case VIDEO_MODE_SECAM: // WARNING! ADV7176 does not support SECAM.
	236	/* This is an attempt to convert
	237	* SECAM->PAL (typically it does not work
	238	* due to genlock: when decoder is in SECAM
	239	* and encoder in in PAL the subcarrier can
	240	* not be syncronized with horizontal
	241	* quency) */
	242	adv7175_write_block(client, init_pal,
	243	sizeof(init_pal));
	244	if (encoder->input == 0)
	245	adv7175_write(client, 0x0d, 0x49); // Disable genlock
	246	adv7175_write(client, 0x07, TR0MODE \| TR0RST);
	247	adv7175_write(client, 0x07, TR0MODE);
	248	break;
	249	default:
bba0d982	250	v4l_dbg(1, debug, client, "illegal norm: %d\n", iarg);
1da177e4	251	return -EINVAL;
1da177e4	252	}
bba0d982	253	v4l_dbg(1, debug, client, "switched to %s\n", norms[iarg]);
1da177e4	254	encoder->norm = iarg;
1da177e4	255	break;
bba0d982	256	}
1da177e4 LT	257
	258	case ENCODER_SET_INPUT:
	259	{
	260	int iarg = (int ) arg;
	261
	262	/* RJ: *iarg = 0: input is from SAA7110
	263	*iarg = 1: input is from ZR36060
	264	iarg = 2: color bar /
	265
	266	switch (iarg) {
1da177e4 LT	267	case 0:
	268	adv7175_write(client, 0x01, 0x00);
	269
	270	if (encoder->norm == VIDEO_MODE_NTSC)
	271	set_subcarrier_freq(client, 1);
	272
	273	adv7175_write(client, 0x0c, TR1CAPT); /* TR1 */
	274	if (encoder->norm == VIDEO_MODE_SECAM)
	275	adv7175_write(client, 0x0d, 0x49); // Disable genlock
	276	else
	277	adv7175_write(client, 0x0d, 0x4f); // Enable genlock
	278	adv7175_write(client, 0x07, TR0MODE \| TR0RST);
	279	adv7175_write(client, 0x07, TR0MODE);
	280	//udelay(10);
	281	break;
	282
	283	case 1:
	284	adv7175_write(client, 0x01, 0x00);
	285
	286	if (encoder->norm == VIDEO_MODE_NTSC)
	287	set_subcarrier_freq(client, 0);
	288
	289	adv7175_write(client, 0x0c, TR1PLAY); /* TR1 */
	290	adv7175_write(client, 0x0d, 0x49);
	291	adv7175_write(client, 0x07, TR0MODE \| TR0RST);
	292	adv7175_write(client, 0x07, TR0MODE);
bba0d982	293	/* udelay(10); */
1da177e4 LT	294	break;
	295
	296	case 2:
	297	adv7175_write(client, 0x01, 0x80);
	298
	299	if (encoder->norm == VIDEO_MODE_NTSC)
	300	set_subcarrier_freq(client, 0);
	301
	302	adv7175_write(client, 0x0d, 0x49);
	303	adv7175_write(client, 0x07, TR0MODE \| TR0RST);
	304	adv7175_write(client, 0x07, TR0MODE);
bba0d982	305	/* udelay(10); */
1da177e4 LT	306	break;
	307
	308	default:
bba0d982	309	v4l_dbg(1, debug, client, "illegal input: %d\n", iarg);
1da177e4	310	return -EINVAL;
1da177e4	311	}
bba0d982	312	v4l_dbg(1, debug, client, "switched to %s\n", inputs[iarg]);
1da177e4	313	encoder->input = iarg;
1da177e4	314	break;
bba0d982	315	}
1da177e4 LT	316
	317	case ENCODER_SET_OUTPUT:
	318	{
	319	int *iarg = arg;
	320
	321	/* not much choice of outputs */
bba0d982	322	if (*iarg != 0)
1da177e4	323	return -EINVAL;
1da177e4	324	break;
bba0d982	325	}
1da177e4 LT	326
	327	case ENCODER_ENABLE_OUTPUT:
	328	{
	329	int *iarg = arg;
	330
	331	encoder->enable = !!*iarg;
1da177e4	332	break;
bba0d982	333	}
1da177e4	334
1da177e4 LT	335	default:
	336	return -EINVAL;
	337	}
	338
	339	return 0;
	340	}
	341
	342	/* ----------------------------------------------------------------------- */
	343
	344	/*
	345	* Generic i2c probe
	346	* concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
	347	*/
bba0d982 HV	348	static unsigned short normal_i2c[] = {
bba0d982 HV	349	I2C_ADV7175 >> 1, (I2C_ADV7175 >> 1) + 1,
1da177e4 LT	350	I2C_ADV7176 >> 1, (I2C_ADV7176 >> 1) + 1,
	351	I2C_CLIENT_END
	352	};
1da177e4	353
bba0d982	354	I2C_CLIENT_INSMOD;
1da177e4	355
bba0d982 HV	356	static int adv7175_probe(struct i2c_client *client,
bba0d982 HV	357	const struct i2c_device_id *id)
1da177e4 LT	358	{
1da177e4 LT	359	int i;
1da177e4	360	struct adv7175 *encoder;
1da177e4 LT	361
1da177e4 LT	362	/* Check if the adapter supports the needed features */
bba0d982 HV	363	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
bba0d982 HV	364	return -ENODEV;
1da177e4	365
bba0d982 HV	366	v4l_info(client, "chip found @ 0x%x (%s)\n",
bba0d982 HV	367	client->addr << 1, client->adapter->name);
1da177e4	368
7408187d	369	encoder = kzalloc(sizeof(struct adv7175), GFP_KERNEL);
bba0d982	370	if (encoder == NULL)
1da177e4	371	return -ENOMEM;
1da177e4 LT	372	encoder->norm = VIDEO_MODE_PAL;
	373	encoder->input = 0;
	374	encoder->enable = 1;
	375	i2c_set_clientdata(client, encoder);
	376
1da177e4 LT	377	i = adv7175_write_block(client, init_common, sizeof(init_common));
	378	if (i >= 0) {
	379	i = adv7175_write(client, 0x07, TR0MODE \| TR0RST);
	380	i = adv7175_write(client, 0x07, TR0MODE);
	381	i = adv7175_read(client, 0x12);
bba0d982	382	v4l_dbg(1, debug, client, "revision %d\n", i & 1);
1da177e4	383	}
bba0d982 HV	384	if (i < 0)
bba0d982 HV	385	v4l_dbg(1, debug, client, "init error 0x%x\n", i);
1da177e4 LT	386	return 0;
	387	}
	388
bba0d982	389	static int adv7175_remove(struct i2c_client *client)
1da177e4	390	{
bba0d982	391	kfree(i2c_get_clientdata(client));
1da177e4 LT	392	return 0;
	393	}
	394
	395	/* ----------------------------------------------------------------------- */
	396
bba0d982 HV	397	static const struct i2c_device_id adv7175_id[] = {
	398	{ "adv7175", 0 },
	399	{ "adv7176", 0 },
	400	{ }
	401	};
	402	MODULE_DEVICE_TABLE(i2c, adv7175_id);
1da177e4	403
bba0d982 HV	404	static struct v4l2_i2c_driver_data v4l2_i2c_data = {
	405	.name = "adv7175",
	406	.driverid = I2C_DRIVERID_ADV7175,
1da177e4	407	.command = adv7175_command,
bba0d982 HV	408	.probe = adv7175_probe,
	409	.remove = adv7175_remove,
	410	.id_table = adv7175_id,
1da177e4	411	};