[deliverable/linux.git] / drivers / media / video / tda9875.c

/*
 * For the TDA9875 chip
 * (The TDA9875 is used on the Diamond DTV2000 french version
 * Other cards probably use these chips as well.)
 * This driver will not complain if used with any
 * other i2c device with the same address.
 *
 * Copyright (c) 2000 Guillaume Delvit based on Gerd Knorr source and
 * Eric Sandeen
 * Copyright (c) 2006 Mauro Carvalho Chehab <mchehab@infradead.org>
 * This code is placed under the terms of the GNU General Public License
 * Based on tda9855.c by Steve VanDeBogart (vandebo@uclink.berkeley.edu)
 * Which was based on tda8425.c by Greg Alexander (c) 1998
 *
 * OPTIONS:
 * debug   - set to 1 if you'd like to see debug messages
 *
 *  Revision: 0.1 - original version
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/videodev2.h>
#include <media/v4l2-device.h>
#include <media/v4l2-i2c-drv-legacy.h>
#include <media/i2c-addr.h>

static int debug; /* insmod parameter */
module_param(debug, int, S_IRUGO | S_IWUSR);
MODULE_LICENSE("GPL");

/* Addresses to scan */
static unsigned short normal_i2c[] =  {
    I2C_ADDR_TDA9875 >> 1,
    I2C_CLIENT_END
};

I2C_CLIENT_INSMOD;

/* This is a superset of the TDA9875 */
struct tda9875 {
	struct v4l2_subdev sd;
	int rvol, lvol;
	int bass, treble;
};

static inline struct tda9875 *to_state(struct v4l2_subdev *sd)
{
	return container_of(sd, struct tda9875, sd);
}

#define dprintk  if (debug) printk

/* The TDA9875 is made by Philips Semiconductor
 * http://www.semiconductors.philips.com
 * TDA9875: I2C-bus controlled DSP audio processor, FM demodulator
 *
 */

		/* subaddresses for TDA9875 */
#define TDA9875_MUT         0x12  /*General mute  (value --> 0b11001100*/
#define TDA9875_CFG         0x01  /* Config register (value --> 0b00000000 */
#define TDA9875_DACOS       0x13  /*DAC i/o select (ADC) 0b0000100*/
#define TDA9875_LOSR        0x16  /*Line output select regirter 0b0100 0001*/

#define TDA9875_CH1V        0x0c  /*Channel 1 volume (mute)*/
#define TDA9875_CH2V        0x0d  /*Channel 2 volume (mute)*/
#define TDA9875_SC1         0x14  /*SCART 1 in (mono)*/
#define TDA9875_SC2         0x15  /*SCART 2 in (mono)*/

#define TDA9875_ADCIS       0x17  /*ADC input select (mono) 0b0110 000*/
#define TDA9875_AER         0x19  /*Audio effect (AVL+Pseudo) 0b0000 0110*/
#define TDA9875_MCS         0x18  /*Main channel select (DAC) 0b0000100*/
#define TDA9875_MVL         0x1a  /* Main volume gauche */
#define TDA9875_MVR         0x1b  /* Main volume droite */
#define TDA9875_MBA         0x1d  /* Main Basse */
#define TDA9875_MTR         0x1e  /* Main treble */
#define TDA9875_ACS         0x1f  /* Auxilary channel select (FM) 0b0000000*/
#define TDA9875_AVL         0x20  /* Auxilary volume gauche */
#define TDA9875_AVR         0x21  /* Auxilary volume droite */
#define TDA9875_ABA         0x22  /* Auxilary Basse */
#define TDA9875_ATR         0x23  /* Auxilary treble */

#define TDA9875_MSR         0x02  /* Monitor select register */
#define TDA9875_C1MSB       0x03  /* Carrier 1 (FM) frequency register MSB */
#define TDA9875_C1MIB       0x04  /* Carrier 1 (FM) frequency register (16-8]b */
#define TDA9875_C1LSB       0x05  /* Carrier 1 (FM) frequency register LSB */
#define TDA9875_C2MSB       0x06  /* Carrier 2 (nicam) frequency register MSB */
#define TDA9875_C2MIB       0x07  /* Carrier 2 (nicam) frequency register (16-8]b */
#define TDA9875_C2LSB       0x08  /* Carrier 2 (nicam) frequency register LSB */
#define TDA9875_DCR         0x09  /* Demodulateur configuration regirter*/
#define TDA9875_DEEM        0x0a  /* FM de-emphasis regirter*/
#define TDA9875_FMAT        0x0b  /* FM Matrix regirter*/

/* values */
#define TDA9875_MUTE_ON	    0xff /* general mute */
#define TDA9875_MUTE_OFF    0xcc /* general no mute */


/* Begin code */

static int tda9875_write(struct v4l2_subdev *sd, int subaddr, unsigned char val)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);
	unsigned char buffer[2];

	v4l2_dbg(1, debug, sd, "Writing %d 0x%x\n", subaddr, val);
	buffer[0] = subaddr;
	buffer[1] = val;
	if (2 != i2c_master_send(client, buffer, 2)) {
		v4l2_warn(sd, "I/O error, trying (write %d 0x%x)\n",
		       subaddr, val);
		return -1;
	}
	return 0;
}


static int i2c_read_register(struct i2c_client *client, int addr, int reg)
{
	unsigned char write[1];
	unsigned char read[1];
	struct i2c_msg msgs[2] = {
		{ addr, 0,        1, write },
		{ addr, I2C_M_RD, 1, read  }
	};

	write[0] = reg;

	if (2 != i2c_transfer(client->adapter, msgs, 2)) {
		v4l_warn(client, "I/O error (read2)\n");
		return -1;
	}
	v4l_dbg(1, debug, client, "chip_read2: reg%d=0x%x\n", reg, read[0]);
	return read[0];
}

static void tda9875_set(struct v4l2_subdev *sd)
{
	struct tda9875 *tda = to_state(sd);
	unsigned char a;

	v4l2_dbg(1, debug, sd, "tda9875_set(%04x,%04x,%04x,%04x)\n",
		tda->lvol, tda->rvol, tda->bass, tda->treble);

	a = tda->lvol & 0xff;
	tda9875_write(sd, TDA9875_MVL, a);
	a =tda->rvol & 0xff;
	tda9875_write(sd, TDA9875_MVR, a);
	a =tda->bass & 0xff;
	tda9875_write(sd, TDA9875_MBA, a);
	a =tda->treble  & 0xff;
	tda9875_write(sd, TDA9875_MTR, a);
}

static void do_tda9875_init(struct v4l2_subdev *sd)
{
	struct tda9875 *t = to_state(sd);

	v4l2_dbg(1, debug, sd, "In tda9875_init\n");
	tda9875_write(sd, TDA9875_CFG, 0xd0); /*reg de config 0 (reset)*/
	tda9875_write(sd, TDA9875_MSR, 0x03);    /* Monitor 0b00000XXX*/
	tda9875_write(sd, TDA9875_C1MSB, 0x00);  /*Car1(FM) MSB XMHz*/
	tda9875_write(sd, TDA9875_C1MIB, 0x00);  /*Car1(FM) MIB XMHz*/
	tda9875_write(sd, TDA9875_C1LSB, 0x00);  /*Car1(FM) LSB XMHz*/
	tda9875_write(sd, TDA9875_C2MSB, 0x00);  /*Car2(NICAM) MSB XMHz*/
	tda9875_write(sd, TDA9875_C2MIB, 0x00);  /*Car2(NICAM) MIB XMHz*/
	tda9875_write(sd, TDA9875_C2LSB, 0x00);  /*Car2(NICAM) LSB XMHz*/
	tda9875_write(sd, TDA9875_DCR, 0x00);    /*Demod config 0x00*/
	tda9875_write(sd, TDA9875_DEEM, 0x44);   /*DE-Emph 0b0100 0100*/
	tda9875_write(sd, TDA9875_FMAT, 0x00);   /*FM Matrix reg 0x00*/
	tda9875_write(sd, TDA9875_SC1, 0x00);    /* SCART 1 (SC1)*/
	tda9875_write(sd, TDA9875_SC2, 0x01);    /* SCART 2 (sc2)*/

	tda9875_write(sd, TDA9875_CH1V, 0x10);  /* Channel volume 1 mute*/
	tda9875_write(sd, TDA9875_CH2V, 0x10);  /* Channel volume 2 mute */
	tda9875_write(sd, TDA9875_DACOS, 0x02); /* sig DAC i/o(in:nicam)*/
	tda9875_write(sd, TDA9875_ADCIS, 0x6f); /* sig ADC input(in:mono)*/
	tda9875_write(sd, TDA9875_LOSR, 0x00);  /* line out (in:mono)*/
	tda9875_write(sd, TDA9875_AER, 0x00);   /*06 Effect (AVL+PSEUDO) */
	tda9875_write(sd, TDA9875_MCS, 0x44);   /* Main ch select (DAC) */
	tda9875_write(sd, TDA9875_MVL, 0x03);   /* Vol Main left 10dB */
	tda9875_write(sd, TDA9875_MVR, 0x03);   /* Vol Main right 10dB*/
	tda9875_write(sd, TDA9875_MBA, 0x00);   /* Main Bass Main 0dB*/
	tda9875_write(sd, TDA9875_MTR, 0x00);   /* Main Treble Main 0dB*/
	tda9875_write(sd, TDA9875_ACS, 0x44);   /* Aux chan select (dac)*/
	tda9875_write(sd, TDA9875_AVL, 0x00);   /* Vol Aux left 0dB*/
	tda9875_write(sd, TDA9875_AVR, 0x00);   /* Vol Aux right 0dB*/
	tda9875_write(sd, TDA9875_ABA, 0x00);   /* Aux Bass Main 0dB*/
	tda9875_write(sd, TDA9875_ATR, 0x00);   /* Aux Aigus Main 0dB*/

	tda9875_write(sd, TDA9875_MUT, 0xcc);   /* General mute  */

	t->lvol = t->rvol = 0;  	/* 0dB */
	t->bass = 0; 			/* 0dB */
	t->treble = 0;  		/* 0dB */
	tda9875_set(sd);
}


static int tda9875_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
	struct tda9875 *t = to_state(sd);

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_VOLUME:
	{
		int left = (t->lvol+84)*606;
		int right = (t->rvol+84)*606;

		ctrl->value=max(left,right);
		return 0;
	}
	case V4L2_CID_AUDIO_BALANCE:
	{
		int left = (t->lvol+84)*606;
		int right = (t->rvol+84)*606;
		int volume = max(left,right);
		int balance = (32768*min(left,right))/
			      (volume ? volume : 1);
		ctrl->value=(left<right)?
			(65535-balance) : balance;
		return 0;
	}
	case V4L2_CID_AUDIO_BASS:
		ctrl->value = (t->bass+12)*2427;    /* min -12 max +15 */
		return 0;
	case V4L2_CID_AUDIO_TREBLE:
		ctrl->value = (t->treble+12)*2730;/* min -12 max +12 */
		return 0;
	}
	return -EINVAL;
}

static int tda9875_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
	struct tda9875 *t = to_state(sd);
	int chvol=0, volume, balance, left, right;

	switch (ctrl->id) {
	case V4L2_CID_AUDIO_VOLUME:
		left = (t->lvol+84)*606;
		right = (t->rvol+84)*606;

		volume = max(left,right);
		balance = (32768*min(left,right))/
			      (volume ? volume : 1);
		balance =(left<right)?
			(65535-balance) : balance;

		volume = ctrl->value;

		chvol=1;
		break;
	case V4L2_CID_AUDIO_BALANCE:
		left = (t->lvol+84)*606;
		right = (t->rvol+84)*606;

		volume=max(left,right);

		balance = ctrl->value;

		chvol=1;
		break;
	case V4L2_CID_AUDIO_BASS:
		t->bass = ((ctrl->value/2400)-12) & 0xff;
		if (t->bass > 15)
			t->bass = 15;
		if (t->bass < -12)
			t->bass = -12 & 0xff;
		break;
	case V4L2_CID_AUDIO_TREBLE:
		t->treble = ((ctrl->value/2700)-12) & 0xff;
		if (t->treble > 12)
			t->treble = 12;
		if (t->treble < -12)
			t->treble = -12 & 0xff;
		break;
	default:
		return -EINVAL;
	}

	if (chvol) {
		left = (min(65536 - balance,32768) *
			volume) / 32768;
		right = (min(balance,32768) *
				volume) / 32768;
		t->lvol = ((left/606)-84) & 0xff;
		if (t->lvol > 24)
			t->lvol = 24;
		if (t->lvol < -84)
			t->lvol = -84 & 0xff;

		t->rvol = ((right/606)-84) & 0xff;
		if (t->rvol > 24)
			t->rvol = 24;
		if (t->rvol < -84)
			t->rvol = -84 & 0xff;
	}

	tda9875_set(sd);
	return 0;
}

static int tda9875_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
{
	switch (qc->id) {
	case V4L2_CID_AUDIO_VOLUME:
	case V4L2_CID_AUDIO_BASS:
	case V4L2_CID_AUDIO_TREBLE:
		return v4l2_ctrl_query_fill_std(qc);
	}
	return -EINVAL;
}

static int tda9875_command(struct i2c_client *client, unsigned cmd, void *arg)
{
	return v4l2_subdev_command(i2c_get_clientdata(client), cmd, arg);
}

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

static const struct v4l2_subdev_core_ops tda9875_core_ops = {
	.queryctrl = tda9875_queryctrl,
	.g_ctrl = tda9875_g_ctrl,
	.s_ctrl = tda9875_s_ctrl,
};

static const struct v4l2_subdev_ops tda9875_ops = {
	.core = &tda9875_core_ops,
};

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


/* *********************** *
 * i2c interface functions *
 * *********************** */

static int tda9875_checkit(struct i2c_client *client, int addr)
{
	int dic, rev;

	dic = i2c_read_register(client, addr, 254);
	rev = i2c_read_register(client, addr, 255);

	if (dic == 0 || dic == 2) { /* tda9875 and tda9875A */
		v4l_info(client, "tda9875%s rev. %d detected at 0x%02x\n",
			dic == 0 ? "" : "A", rev, addr << 1);
		return 1;
	}
	v4l_info(client, "no such chip at 0x%02x (dic=0x%x rev=0x%x)\n",
			addr << 1, dic, rev);
	return 0;
}

static int tda9875_probe(struct i2c_client *client,
			const struct i2c_device_id *id)
{
	struct tda9875 *t;
	struct v4l2_subdev *sd;

	v4l_info(client, "chip found @ 0x%02x (%s)\n",
			client->addr << 1, client->adapter->name);

	if (!tda9875_checkit(client, client->addr))
		return -ENODEV;

	t = kzalloc(sizeof(*t), GFP_KERNEL);
	if (!t)
		return -ENOMEM;
	sd = &t->sd;
	v4l2_i2c_subdev_init(sd, client, &tda9875_ops);

	do_tda9875_init(sd);
	return 0;
}

static int tda9875_remove(struct i2c_client *client)
{
	struct v4l2_subdev *sd = i2c_get_clientdata(client);

	do_tda9875_init(sd);
	v4l2_device_unregister_subdev(sd);
	kfree(to_state(sd));
	return 0;
}

static const struct i2c_device_id tda9875_id[] = {
	{ "tda9875", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, tda9875_id);

static struct v4l2_i2c_driver_data v4l2_i2c_data = {
	.name = "tda9875",
	.driverid = I2C_DRIVERID_TDA9875,
	.command = tda9875_command,
	.probe = tda9875_probe,
	.remove = tda9875_remove,
	.id_table = tda9875_id,
};
Commit	Line	Data
1da177e4 LT	1	/*
	2	* For the TDA9875 chip
	3	* (The TDA9875 is used on the Diamond DTV2000 french version
	4	* Other cards probably use these chips as well.)
	5	* This driver will not complain if used with any
	6	* other i2c device with the same address.
	7	*
	8	* Copyright (c) 2000 Guillaume Delvit based on Gerd Knorr source and
	9	* Eric Sandeen
5eba3571	10	* Copyright (c) 2006 Mauro Carvalho Chehab <mchehab@infradead.org>
1da177e4 LT	11	* This code is placed under the terms of the GNU General Public License
	12	* Based on tda9855.c by Steve VanDeBogart (vandebo@uclink.berkeley.edu)
	13	* Which was based on tda8425.c by Greg Alexander (c) 1998
	14	*
	15	* OPTIONS:
	16	* debug - set to 1 if you'd like to see debug messages
	17	*
	18	* Revision: 0.1 - original version
	19	*/
	20
	21	#include <linux/module.h>
	22	#include <linux/kernel.h>
1da177e4 LT	23	#include <linux/string.h>
	24	#include <linux/timer.h>
	25	#include <linux/delay.h>
	26	#include <linux/errno.h>
	27	#include <linux/slab.h>
1da177e4	28	#include <linux/i2c.h>
12f91a3f HV	29	#include <linux/videodev2.h>
	30	#include <media/v4l2-device.h>
	31	#include <media/v4l2-i2c-drv-legacy.h>
fa3fcceb MCC	32	#include <media/i2c-addr.h>
fa3fcceb MCC	33
1da177e4 LT	34	static int debug; /* insmod parameter */
	35	module_param(debug, int, S_IRUGO \| S_IWUSR);
	36	MODULE_LICENSE("GPL");
	37
1da177e4 LT	38	/* Addresses to scan */
1da177e4 LT	39	static unsigned short normal_i2c[] = {
09df1c16	40	I2C_ADDR_TDA9875 >> 1,
1da177e4 LT	41	I2C_CLIENT_END
1da177e4 LT	42	};
f87086e3	43
1da177e4 LT	44	I2C_CLIENT_INSMOD;
	45
	46	/* This is a superset of the TDA9875 */
	47	struct tda9875 {
12f91a3f	48	struct v4l2_subdev sd;
1da177e4 LT	49	int rvol, lvol;
1da177e4 LT	50	int bass, treble;
1da177e4 LT	51	};
1da177e4 LT	52
12f91a3f HV	53	static inline struct tda9875 to_state(struct v4l2_subdev sd)
	54	{
	55	return container_of(sd, struct tda9875, sd);
	56	}
1da177e4 LT	57
	58	#define dprintk if (debug) printk
	59
	60	/* The TDA9875 is made by Philips Semiconductor
	61	* http://www.semiconductors.philips.com
	62	* TDA9875: I2C-bus controlled DSP audio processor, FM demodulator
	63	*
	64	*/
	65
	66	/* subaddresses for TDA9875 */
	67	#define TDA9875_MUT 0x12 /General mute (value --> 0b11001100/
	68	#define TDA9875_CFG 0x01 /* Config register (value --> 0b00000000 */
	69	#define TDA9875_DACOS 0x13 /DAC i/o select (ADC) 0b0000100/
	70	#define TDA9875_LOSR 0x16 /Line output select regirter 0b0100 0001/
	71
	72	#define TDA9875_CH1V 0x0c /Channel 1 volume (mute)/
	73	#define TDA9875_CH2V 0x0d /Channel 2 volume (mute)/
	74	#define TDA9875_SC1 0x14 /SCART 1 in (mono)/
	75	#define TDA9875_SC2 0x15 /SCART 2 in (mono)/
	76
	77	#define TDA9875_ADCIS 0x17 /ADC input select (mono) 0b0110 000/
	78	#define TDA9875_AER 0x19 /Audio effect (AVL+Pseudo) 0b0000 0110/
	79	#define TDA9875_MCS 0x18 /Main channel select (DAC) 0b0000100/
	80	#define TDA9875_MVL 0x1a /* Main volume gauche */
	81	#define TDA9875_MVR 0x1b /* Main volume droite */
	82	#define TDA9875_MBA 0x1d /* Main Basse */
	83	#define TDA9875_MTR 0x1e /* Main treble */
	84	#define TDA9875_ACS 0x1f /* Auxilary channel select (FM) 0b0000000*/
	85	#define TDA9875_AVL 0x20 /* Auxilary volume gauche */
	86	#define TDA9875_AVR 0x21 /* Auxilary volume droite */
	87	#define TDA9875_ABA 0x22 /* Auxilary Basse */
	88	#define TDA9875_ATR 0x23 /* Auxilary treble */
	89
	90	#define TDA9875_MSR 0x02 /* Monitor select register */
	91	#define TDA9875_C1MSB 0x03 /* Carrier 1 (FM) frequency register MSB */
	92	#define TDA9875_C1MIB 0x04 /* Carrier 1 (FM) frequency register (16-8]b */
	93	#define TDA9875_C1LSB 0x05 /* Carrier 1 (FM) frequency register LSB */
	94	#define TDA9875_C2MSB 0x06 /* Carrier 2 (nicam) frequency register MSB */
	95	#define TDA9875_C2MIB 0x07 /* Carrier 2 (nicam) frequency register (16-8]b */
	96	#define TDA9875_C2LSB 0x08 /* Carrier 2 (nicam) frequency register LSB */
	97	#define TDA9875_DCR 0x09 /* Demodulateur configuration regirter*/
	98	#define TDA9875_DEEM 0x0a /* FM de-emphasis regirter*/
	99	#define TDA9875_FMAT 0x0b /* FM Matrix regirter*/
	100
	101	/* values */
	102	#define TDA9875_MUTE_ON 0xff /* general mute */
	103	#define TDA9875_MUTE_OFF 0xcc /* general no mute */
	104
	105
	106
	107	/* Begin code */
	108
12f91a3f	109	static int tda9875_write(struct v4l2_subdev *sd, int subaddr, unsigned char val)
1da177e4	110	{
12f91a3f	111	struct i2c_client *client = v4l2_get_subdevdata(sd);
1da177e4	112	unsigned char buffer[2];
12f91a3f HV	113
12f91a3f HV	114	v4l2_dbg(1, debug, sd, "Writing %d 0x%x\n", subaddr, val);
1da177e4 LT	115	buffer[0] = subaddr;
1da177e4 LT	116	buffer[1] = val;
12f91a3f HV	117	if (2 != i2c_master_send(client, buffer, 2)) {
12f91a3f HV	118	v4l2_warn(sd, "I/O error, trying (write %d 0x%x)\n",
1da177e4 LT	119	subaddr, val);
	120	return -1;
	121	}
	122	return 0;
	123	}
	124
1da177e4	125
12f91a3f	126	static int i2c_read_register(struct i2c_client *client, int addr, int reg)
1da177e4	127	{
4ac97914 MCC	128	unsigned char write[1];
	129	unsigned char read[1];
	130	struct i2c_msg msgs[2] = {
	131	{ addr, 0, 1, write },
	132	{ addr, I2C_M_RD, 1, read }
	133	};
12f91a3f	134
4ac97914 MCC	135	write[0] = reg;
4ac97914 MCC	136
12f91a3f HV	137	if (2 != i2c_transfer(client->adapter, msgs, 2)) {
12f91a3f HV	138	v4l_warn(client, "I/O error (read2)\n");
4ac97914 MCC	139	return -1;
4ac97914 MCC	140	}
12f91a3f	141	v4l_dbg(1, debug, client, "chip_read2: reg%d=0x%x\n", reg, read[0]);
4ac97914	142	return read[0];
1da177e4 LT	143	}
1da177e4 LT	144
12f91a3f	145	static void tda9875_set(struct v4l2_subdev *sd)
1da177e4	146	{
12f91a3f	147	struct tda9875 *tda = to_state(sd);
1da177e4 LT	148	unsigned char a;
1da177e4 LT	149
12f91a3f HV	150	v4l2_dbg(1, debug, sd, "tda9875_set(%04x,%04x,%04x,%04x)\n",
12f91a3f HV	151	tda->lvol, tda->rvol, tda->bass, tda->treble);
1da177e4 LT	152
1da177e4 LT	153	a = tda->lvol & 0xff;
12f91a3f	154	tda9875_write(sd, TDA9875_MVL, a);
1da177e4	155	a =tda->rvol & 0xff;
12f91a3f	156	tda9875_write(sd, TDA9875_MVR, a);
1da177e4	157	a =tda->bass & 0xff;
12f91a3f	158	tda9875_write(sd, TDA9875_MBA, a);
1da177e4	159	a =tda->treble & 0xff;
12f91a3f	160	tda9875_write(sd, TDA9875_MTR, a);
1da177e4 LT	161	}
1da177e4 LT	162
12f91a3f	163	static void do_tda9875_init(struct v4l2_subdev *sd)
1da177e4	164	{
12f91a3f HV	165	struct tda9875 *t = to_state(sd);
	166
	167	v4l2_dbg(1, debug, sd, "In tda9875_init\n");
	168	tda9875_write(sd, TDA9875_CFG, 0xd0); /reg de config 0 (reset)/
	169	tda9875_write(sd, TDA9875_MSR, 0x03); /* Monitor 0b00000XXX*/
	170	tda9875_write(sd, TDA9875_C1MSB, 0x00); /Car1(FM) MSB XMHz/
	171	tda9875_write(sd, TDA9875_C1MIB, 0x00); /Car1(FM) MIB XMHz/
	172	tda9875_write(sd, TDA9875_C1LSB, 0x00); /Car1(FM) LSB XMHz/
	173	tda9875_write(sd, TDA9875_C2MSB, 0x00); /Car2(NICAM) MSB XMHz/
	174	tda9875_write(sd, TDA9875_C2MIB, 0x00); /Car2(NICAM) MIB XMHz/
	175	tda9875_write(sd, TDA9875_C2LSB, 0x00); /Car2(NICAM) LSB XMHz/
	176	tda9875_write(sd, TDA9875_DCR, 0x00); /Demod config 0x00/
	177	tda9875_write(sd, TDA9875_DEEM, 0x44); /DE-Emph 0b0100 0100/
	178	tda9875_write(sd, TDA9875_FMAT, 0x00); /FM Matrix reg 0x00/
	179	tda9875_write(sd, TDA9875_SC1, 0x00); /* SCART 1 (SC1)*/
	180	tda9875_write(sd, TDA9875_SC2, 0x01); /* SCART 2 (sc2)*/
	181
	182	tda9875_write(sd, TDA9875_CH1V, 0x10); /* Channel volume 1 mute*/
	183	tda9875_write(sd, TDA9875_CH2V, 0x10); /* Channel volume 2 mute */
	184	tda9875_write(sd, TDA9875_DACOS, 0x02); /* sig DAC i/o(in:nicam)*/
	185	tda9875_write(sd, TDA9875_ADCIS, 0x6f); /* sig ADC input(in:mono)*/
	186	tda9875_write(sd, TDA9875_LOSR, 0x00); /* line out (in:mono)*/
	187	tda9875_write(sd, TDA9875_AER, 0x00); /06 Effect (AVL+PSEUDO) /
	188	tda9875_write(sd, TDA9875_MCS, 0x44); /* Main ch select (DAC) */
	189	tda9875_write(sd, TDA9875_MVL, 0x03); /* Vol Main left 10dB */
	190	tda9875_write(sd, TDA9875_MVR, 0x03); /* Vol Main right 10dB*/
	191	tda9875_write(sd, TDA9875_MBA, 0x00); /* Main Bass Main 0dB*/
	192	tda9875_write(sd, TDA9875_MTR, 0x00); /* Main Treble Main 0dB*/
	193	tda9875_write(sd, TDA9875_ACS, 0x44); /* Aux chan select (dac)*/
	194	tda9875_write(sd, TDA9875_AVL, 0x00); /* Vol Aux left 0dB*/
	195	tda9875_write(sd, TDA9875_AVR, 0x00); /* Vol Aux right 0dB*/
	196	tda9875_write(sd, TDA9875_ABA, 0x00); /* Aux Bass Main 0dB*/
	197	tda9875_write(sd, TDA9875_ATR, 0x00); /* Aux Aigus Main 0dB*/
	198
	199	tda9875_write(sd, TDA9875_MUT, 0xcc); /* General mute */
	200
	201	t->lvol = t->rvol = 0; /* 0dB */
	202	t->bass = 0; /* 0dB */
	203	t->treble = 0; /* 0dB */
	204	tda9875_set(sd);
1da177e4 LT	205	}
	206
	207
12f91a3f	208	static int tda9875_g_ctrl(struct v4l2_subdev sd, struct v4l2_control ctrl)
1da177e4	209	{
12f91a3f	210	struct tda9875 *t = to_state(sd);
1da177e4	211
5eba3571 MCC	212	switch (ctrl->id) {
	213	case V4L2_CID_AUDIO_VOLUME:
	214	{
	215	int left = (t->lvol+84)*606;
	216	int right = (t->rvol+84)*606;
1da177e4	217
5eba3571 MCC	218	ctrl->value=max(left,right);
	219	return 0;
	220	}
	221	case V4L2_CID_AUDIO_BALANCE:
1da177e4	222	{
5eba3571 MCC	223	int left = (t->lvol+84)*606;
	224	int right = (t->rvol+84)*606;
	225	int volume = max(left,right);
	226	int balance = (32768*min(left,right))/
	227	(volume ? volume : 1);
	228	ctrl->value=(left<right)?
	229	(65535-balance) : balance;
	230	return 0;
	231	}
	232	case V4L2_CID_AUDIO_BASS:
	233	ctrl->value = (t->bass+12)2427; / min -12 max +15 */
	234	return 0;
	235	case V4L2_CID_AUDIO_TREBLE:
	236	ctrl->value = (t->treble+12)2730;/ min -12 max +12 */
	237	return 0;
	238	}
	239	return -EINVAL;
	240	}
1da177e4	241
12f91a3f	242	static int tda9875_s_ctrl(struct v4l2_subdev sd, struct v4l2_control ctrl)
5eba3571	243	{
12f91a3f	244	struct tda9875 *t = to_state(sd);
5eba3571	245	int chvol=0, volume, balance, left, right;
1da177e4	246
5eba3571 MCC	247	switch (ctrl->id) {
	248	case V4L2_CID_AUDIO_VOLUME:
	249	left = (t->lvol+84)*606;
	250	right = (t->rvol+84)*606;
	251
	252	volume = max(left,right);
	253	balance = (32768*min(left,right))/
	254	(volume ? volume : 1);
	255	balance =(left<right)?
	256	(65535-balance) : balance;
	257
	258	volume = ctrl->value;
1da177e4	259
5eba3571 MCC	260	chvol=1;
	261	break;
	262	case V4L2_CID_AUDIO_BALANCE:
1da177e4 LT	263	left = (t->lvol+84)*606;
1da177e4 LT	264	right = (t->rvol+84)*606;
5eba3571 MCC	265
	266	volume=max(left,right);
	267
	268	balance = ctrl->value;
	269
	270	chvol=1;
	271	break;
	272	case V4L2_CID_AUDIO_BASS:
	273	t->bass = ((ctrl->value/2400)-12) & 0xff;
	274	if (t->bass > 15)
	275	t->bass = 15;
	276	if (t->bass < -12)
	277	t->bass = -12 & 0xff;
	278	break;
	279	case V4L2_CID_AUDIO_TREBLE:
	280	t->treble = ((ctrl->value/2700)-12) & 0xff;
	281	if (t->treble > 12)
	282	t->treble = 12;
	283	if (t->treble < -12)
	284	t->treble = -12 & 0xff;
	285	break;
	286	default:
	287	return -EINVAL;
1da177e4 LT	288	}
1da177e4 LT	289
5eba3571 MCC	290	if (chvol) {
	291	left = (min(65536 - balance,32768) *
	292	volume) / 32768;
	293	right = (min(balance,32768) *
	294	volume) / 32768;
1da177e4 LT	295	t->lvol = ((left/606)-84) & 0xff;
1da177e4 LT	296	if (t->lvol > 24)
5eba3571	297	t->lvol = 24;
1da177e4	298	if (t->lvol < -84)
5eba3571	299	t->lvol = -84 & 0xff;
1da177e4 LT	300
	301	t->rvol = ((right/606)-84) & 0xff;
	302	if (t->rvol > 24)
5eba3571	303	t->rvol = 24;
1da177e4	304	if (t->rvol < -84)
5eba3571 MCC	305	t->rvol = -84 & 0xff;
5eba3571 MCC	306	}
1da177e4	307
12f91a3f	308	tda9875_set(sd);
5eba3571 MCC	309	return 0;
5eba3571 MCC	310	}
1da177e4	311
12f91a3f	312	static int tda9875_queryctrl(struct v4l2_subdev sd, struct v4l2_queryctrl qc)
5eba3571	313	{
12f91a3f HV	314	switch (qc->id) {
	315	case V4L2_CID_AUDIO_VOLUME:
	316	case V4L2_CID_AUDIO_BASS:
	317	case V4L2_CID_AUDIO_TREBLE:
5eba3571 MCC	318	return v4l2_ctrl_query_fill_std(qc);
5eba3571 MCC	319	}
12f91a3f HV	320	return -EINVAL;
12f91a3f HV	321	}
1da177e4	322
12f91a3f HV	323	static int tda9875_command(struct i2c_client client, unsigned cmd, void arg)
	324	{
	325	return v4l2_subdev_command(i2c_get_clientdata(client), cmd, arg);
	326	}
1da177e4	327
12f91a3f	328	/* ----------------------------------------------------------------------- */
1da177e4	329
12f91a3f HV	330	static const struct v4l2_subdev_core_ops tda9875_core_ops = {
	331	.queryctrl = tda9875_queryctrl,
	332	.g_ctrl = tda9875_g_ctrl,
	333	.s_ctrl = tda9875_s_ctrl,
	334	};
1da177e4	335
12f91a3f HV	336	static const struct v4l2_subdev_ops tda9875_ops = {
	337	.core = &tda9875_core_ops,
	338	};
1da177e4	339
12f91a3f	340	/* ----------------------------------------------------------------------- */
1da177e4 LT	341
1da177e4 LT	342
12f91a3f HV	343	/* *********************** *
	344	* i2c interface functions *
	345	* *********************** */
1da177e4	346
12f91a3f	347	static int tda9875_checkit(struct i2c_client *client, int addr)
1da177e4	348	{
12f91a3f	349	int dic, rev;
1da177e4	350
12f91a3f HV	351	dic = i2c_read_register(client, addr, 254);
	352	rev = i2c_read_register(client, addr, 255);
	353
	354	if (dic == 0 \|\| dic == 2) { /* tda9875 and tda9875A */
	355	v4l_info(client, "tda9875%s rev. %d detected at 0x%02x\n",
	356	dic == 0 ? "" : "A", rev, addr << 1);
	357	return 1;
	358	}
	359	v4l_info(client, "no such chip at 0x%02x (dic=0x%x rev=0x%x)\n",
	360	addr << 1, dic, rev);
	361	return 0;
1da177e4 LT	362	}
1da177e4 LT	363
12f91a3f HV	364	static int tda9875_probe(struct i2c_client *client,
12f91a3f HV	365	const struct i2c_device_id *id)
1da177e4	366	{
12f91a3f HV	367	struct tda9875 *t;
	368	struct v4l2_subdev *sd;
	369
	370	v4l_info(client, "chip found @ 0x%02x (%s)\n",
	371	client->addr << 1, client->adapter->name);
	372
	373	if (!tda9875_checkit(client, client->addr))
	374	return -ENODEV;
	375
	376	t = kzalloc(sizeof(*t), GFP_KERNEL);
	377	if (!t)
	378	return -ENOMEM;
	379	sd = &t->sd;
	380	v4l2_i2c_subdev_init(sd, client, &tda9875_ops);
	381
	382	do_tda9875_init(sd);
	383	return 0;
1da177e4 LT	384	}
1da177e4 LT	385
12f91a3f HV	386	static int tda9875_remove(struct i2c_client *client)
	387	{
	388	struct v4l2_subdev *sd = i2c_get_clientdata(client);
1da177e4	389
12f91a3f HV	390	do_tda9875_init(sd);
	391	v4l2_device_unregister_subdev(sd);
	392	kfree(to_state(sd));
	393	return 0;
	394	}
1da177e4	395
12f91a3f HV	396	static const struct i2c_device_id tda9875_id[] = {
	397	{ "tda9875", 0 },
	398	{ }
	399	};
	400	MODULE_DEVICE_TABLE(i2c, tda9875_id);
	401
	402	static struct v4l2_i2c_driver_data v4l2_i2c_data = {
	403	.name = "tda9875",
	404	.driverid = I2C_DRIVERID_TDA9875,
	405	.command = tda9875_command,
	406	.probe = tda9875_probe,
	407	.remove = tda9875_remove,
	408	.id_table = tda9875_id,
	409	};