[GitHub/mt8127/android_kernel_alcatel_ttab.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
 * 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/sched.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/videodev.h>
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <linux/init.h>

#include "bttv.h"
#include <media/audiochip.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_TDA9875 >> 1,
    I2C_CLIENT_END
};
I2C_CLIENT_INSMOD;

/* This is a superset of the TDA9875 */
struct tda9875 {
	int mode;
	int rvol, lvol;
	int bass, treble;
	struct i2c_client c;
};

static struct i2c_driver driver;
static struct i2c_client client_template;

#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 i2c_client *client, int subaddr, unsigned char val)
{
	unsigned char buffer[2];
	dprintk("In tda9875_write\n");
	dprintk("Writing %d 0x%x\n", subaddr, val);
	buffer[0] = subaddr;
	buffer[1] = val;
	if (2 != i2c_master_send(client,buffer,2)) {
		printk(KERN_WARNING "tda9875: I/O error, trying (write %d 0x%x)\n",
		       subaddr, val);
		return -1;
	}
	return 0;
}


static int i2c_read_register(struct i2c_adapter *adap, 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(adap,msgs,2)) {
		printk(KERN_WARNING "tda9875: I/O error (read2)\n");
		return -1;
	}
	dprintk("tda9875: chip_read2: reg%d=0x%x\n",reg,read[0]);
	return read[0];
}

static void tda9875_set(struct i2c_client *client)
{
	struct tda9875 *tda = i2c_get_clientdata(client);
	unsigned char a;

	dprintk(KERN_DEBUG "tda9875_set(%04x,%04x,%04x,%04x)\n",
		tda->lvol,tda->rvol,tda->bass,tda->treble);


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

static void do_tda9875_init(struct i2c_client *client)
{
	struct tda9875 *t = i2c_get_clientdata(client);
	dprintk("In tda9875_init\n");
	tda9875_write(client, TDA9875_CFG, 0xd0 ); /*reg de config 0 (reset)*/
    	tda9875_write(client, TDA9875_MSR, 0x03 );    /* Monitor 0b00000XXX*/
	tda9875_write(client, TDA9875_C1MSB, 0x00 );  /*Car1(FM) MSB XMHz*/
	tda9875_write(client, TDA9875_C1MIB, 0x00 );  /*Car1(FM) MIB XMHz*/
	tda9875_write(client, TDA9875_C1LSB, 0x00 );  /*Car1(FM) LSB XMHz*/
	tda9875_write(client, TDA9875_C2MSB, 0x00 );  /*Car2(NICAM) MSB XMHz*/
	tda9875_write(client, TDA9875_C2MIB, 0x00 );  /*Car2(NICAM) MIB XMHz*/
	tda9875_write(client, TDA9875_C2LSB, 0x00 );  /*Car2(NICAM) LSB XMHz*/
	tda9875_write(client, TDA9875_DCR, 0x00 );    /*Demod config 0x00*/
	tda9875_write(client, TDA9875_DEEM, 0x44 );   /*DE-Emph 0b0100 0100*/
	tda9875_write(client, TDA9875_FMAT, 0x00 );   /*FM Matrix reg 0x00*/
	tda9875_write(client, TDA9875_SC1, 0x00 );    /* SCART 1 (SC1)*/
	tda9875_write(client, TDA9875_SC2, 0x01 );    /* SCART 2 (sc2)*/

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

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

	t->mode=AUDIO_UNMUTE;
	t->lvol=t->rvol =0;  	/* 0dB */
	t->bass=0; 			/* 0dB */
	t->treble=0;  		/* 0dB */
	tda9875_set(client);

}


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

static int tda9875_checkit(struct i2c_adapter *adap, int addr)
{
	int dic,rev;

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

	if(dic==0 || dic==2) { // tda9875 and tda9875A
		printk("tda9875: TDA9875%s Rev.%d detected at 0x%x\n",
		dic==0?"":"A", rev,addr<<1);
		return 1;
	}
	printk("tda9875: no such chip at 0x%x (dic=0x%x rev=0x%x)\n",addr<<1,dic,rev);
	return(0);
}

static int tda9875_attach(struct i2c_adapter *adap, int addr, int kind)
{
	struct tda9875 *t;
	struct i2c_client *client;
	dprintk("In tda9875_attach\n");

	t = kzalloc(sizeof *t,GFP_KERNEL);
	if (!t)
		return -ENOMEM;

	client = &t->c;
	memcpy(client,&client_template,sizeof(struct i2c_client));
	client->adapter = adap;
	client->addr = addr;
	i2c_set_clientdata(client, t);

	if(!tda9875_checkit(adap,addr)) {
		kfree(t);
		return 1;
	}

	do_tda9875_init(client);
	printk(KERN_INFO "tda9875: init\n");

	i2c_attach_client(client);
	return 0;
}

static int tda9875_probe(struct i2c_adapter *adap)
{
	if (adap->class & I2C_CLASS_TV_ANALOG)
		return i2c_probe(adap, &addr_data, tda9875_attach);
	return 0;
}

static int tda9875_detach(struct i2c_client *client)
{
	struct tda9875 *t  = i2c_get_clientdata(client);

	do_tda9875_init(client);
	i2c_detach_client(client);

	kfree(t);
	return 0;
}

static int tda9875_command(struct i2c_client *client,
				unsigned int cmd, void *arg)
{
	struct tda9875 *t = i2c_get_clientdata(client);

	dprintk("In tda9875_command...\n");

	switch (cmd) {
	/* --- v4l ioctls --- */
	/* take care: bttv does userspace copying, we'll get a
	   kernel pointer here... */
	case VIDIOCGAUDIO:
	{
		struct video_audio *va = arg;
		int left,right;

		dprintk("VIDIOCGAUDIO\n");

		va->flags |= VIDEO_AUDIO_VOLUME |
			VIDEO_AUDIO_BASS |
			VIDEO_AUDIO_TREBLE;

		/* min is -84 max is 24 */
		left = (t->lvol+84)*606;
		right = (t->rvol+84)*606;
		va->volume=max(left,right);
		va->balance=(32768*min(left,right))/
			(va->volume ? va->volume : 1);
		va->balance=(left<right)?
			(65535-va->balance) : va->balance;
		va->bass = (t->bass+12)*2427;    /* min -12 max +15 */
		va->treble = (t->treble+12)*2730;/* min -12 max +12 */
		va->mode |= VIDEO_SOUND_MONO;

		break; /* VIDIOCGAUDIO case */
	}

	case VIDIOCSAUDIO:
	{
		struct video_audio *va = arg;
		int left,right;

		dprintk("VIDEOCSAUDIO...\n");
		left = (min(65536 - va->balance,32768) *
			va->volume) / 32768;
		right = (min(va->balance,(__u16)32768) *
			 va->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;

		t->bass = ((va->bass/2400)-12) & 0xff;
		if (t->bass > 15)
		 t->bass = 15;
		if (t->bass < -12)
		 t->bass = -12 & 0xff;

		t->treble = ((va->treble/2700)-12) & 0xff;
		if (t->treble > 12)
		 t->treble = 12;
		if (t->treble < -12)
		 t->treble = -12 & 0xff;


//printk("tda9875 bal:%04x vol:%04x bass:%04x treble:%04x\n",va->balance,va->volume,va->bass,va->treble);


		tda9875_set(client);

		break;

	} /* end of VIDEOCSAUDIO case */

	default: /* Not VIDEOCGAUDIO or VIDEOCSAUDIO */

		/* nothing */
		dprintk("Default\n");

	} /* end of (cmd) switch */

	return 0;
}


static struct i2c_driver driver = {
	.driver = {
		.name   = "tda9875",
	},
	.id             = I2C_DRIVERID_TDA9875,
	.attach_adapter = tda9875_probe,
	.detach_client  = tda9875_detach,
	.command        = tda9875_command,
};

static struct i2c_client client_template =
{
	.name      = "tda9875",
	.driver    = &driver,
};

static int __init tda9875_init(void)
{
	return i2c_add_driver(&driver);
}

static void __exit tda9875_fini(void)
{
	i2c_del_driver(&driver);
}

module_init(tda9875_init);
module_exit(tda9875_fini);

/*
 * Local variables:
 * c-basic-offset: 8
 * End:
 */
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
	10	* This code is placed under the terms of the GNU General Public License
	11	* Based on tda9855.c by Steve VanDeBogart (vandebo@uclink.berkeley.edu)
	12	* Which was based on tda8425.c by Greg Alexander (c) 1998
	13	*
	14	* OPTIONS:
	15	* debug - set to 1 if you'd like to see debug messages
	16	*
	17	* Revision: 0.1 - original version
	18	*/
	19
	20	#include <linux/module.h>
	21	#include <linux/kernel.h>
	22	#include <linux/sched.h>
	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>
	28	#include <linux/videodev.h>
	29	#include <linux/i2c.h>
	30	#include <linux/i2c-algo-bit.h>
	31	#include <linux/init.h>
	32
	33	#include "bttv.h"
	34	#include <media/audiochip.h>
1da177e4 LT	35
	36	static int debug; /* insmod parameter */
	37	module_param(debug, int, S_IRUGO \| S_IWUSR);
	38	MODULE_LICENSE("GPL");
	39
	40
	41	/* Addresses to scan */
	42	static unsigned short normal_i2c[] = {
	43	I2C_TDA9875 >> 1,
	44	I2C_CLIENT_END
	45	};
1da177e4 LT	46	I2C_CLIENT_INSMOD;
	47
	48	/* This is a superset of the TDA9875 */
	49	struct tda9875 {
	50	int mode;
	51	int rvol, lvol;
	52	int bass, treble;
	53	struct i2c_client c;
	54	};
	55
	56	static struct i2c_driver driver;
	57	static struct i2c_client client_template;
	58
	59	#define dprintk if (debug) printk
	60
	61	/* The TDA9875 is made by Philips Semiconductor
	62	* http://www.semiconductors.philips.com
	63	* TDA9875: I2C-bus controlled DSP audio processor, FM demodulator
	64	*
	65	*/
	66
	67	/* subaddresses for TDA9875 */
	68	#define TDA9875_MUT 0x12 /General mute (value --> 0b11001100/
	69	#define TDA9875_CFG 0x01 /* Config register (value --> 0b00000000 */
	70	#define TDA9875_DACOS 0x13 /DAC i/o select (ADC) 0b0000100/
	71	#define TDA9875_LOSR 0x16 /Line output select regirter 0b0100 0001/
	72
	73	#define TDA9875_CH1V 0x0c /Channel 1 volume (mute)/
	74	#define TDA9875_CH2V 0x0d /Channel 2 volume (mute)/
	75	#define TDA9875_SC1 0x14 /SCART 1 in (mono)/
	76	#define TDA9875_SC2 0x15 /SCART 2 in (mono)/
	77
	78	#define TDA9875_ADCIS 0x17 /ADC input select (mono) 0b0110 000/
	79	#define TDA9875_AER 0x19 /Audio effect (AVL+Pseudo) 0b0000 0110/
	80	#define TDA9875_MCS 0x18 /Main channel select (DAC) 0b0000100/
	81	#define TDA9875_MVL 0x1a /* Main volume gauche */
	82	#define TDA9875_MVR 0x1b /* Main volume droite */
	83	#define TDA9875_MBA 0x1d /* Main Basse */
	84	#define TDA9875_MTR 0x1e /* Main treble */
	85	#define TDA9875_ACS 0x1f /* Auxilary channel select (FM) 0b0000000*/
	86	#define TDA9875_AVL 0x20 /* Auxilary volume gauche */
	87	#define TDA9875_AVR 0x21 /* Auxilary volume droite */
	88	#define TDA9875_ABA 0x22 /* Auxilary Basse */
	89	#define TDA9875_ATR 0x23 /* Auxilary treble */
	90
	91	#define TDA9875_MSR 0x02 /* Monitor select register */
	92	#define TDA9875_C1MSB 0x03 /* Carrier 1 (FM) frequency register MSB */
	93	#define TDA9875_C1MIB 0x04 /* Carrier 1 (FM) frequency register (16-8]b */
	94	#define TDA9875_C1LSB 0x05 /* Carrier 1 (FM) frequency register LSB */
	95	#define TDA9875_C2MSB 0x06 /* Carrier 2 (nicam) frequency register MSB */
	96	#define TDA9875_C2MIB 0x07 /* Carrier 2 (nicam) frequency register (16-8]b */
	97	#define TDA9875_C2LSB 0x08 /* Carrier 2 (nicam) frequency register LSB */
	98	#define TDA9875_DCR 0x09 /* Demodulateur configuration regirter*/
	99	#define TDA9875_DEEM 0x0a /* FM de-emphasis regirter*/
	100	#define TDA9875_FMAT 0x0b /* FM Matrix regirter*/
	101
	102	/* values */
	103	#define TDA9875_MUTE_ON 0xff /* general mute */
	104	#define TDA9875_MUTE_OFF 0xcc /* general no mute */
	105
	106
	107
	108	/* Begin code */
	109
110	static int tda9875_write(struct i2c_client *client, int subaddr, unsigned char val)
111	{
112	unsigned char buffer[2];
113	dprintk("In tda9875_write\n");
114	dprintk("Writing %d 0x%x\n", subaddr, val);
115	buffer[0] = subaddr;
116	buffer[1] = val;
117	if (2 != i2c_master_send(client,buffer,2)) {
118	printk(KERN_WARNING "tda9875: I/O error, trying (write %d 0x%x)\n",
119	subaddr, val);
120	return -1;
121	}
122	return 0;
123	}
124
1da177e4 LT	125
	126	static int i2c_read_register(struct i2c_adapter *adap, int addr, int reg)
	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	};
	134	write[0] = reg;
	135
	136	if (2 != i2c_transfer(adap,msgs,2)) {
	137	printk(KERN_WARNING "tda9875: I/O error (read2)\n");
	138	return -1;
	139	}
	140	dprintk("tda9875: chip_read2: reg%d=0x%x\n",reg,read[0]);
	141	return read[0];
1da177e4 LT	142	}
	143
	144	static void tda9875_set(struct i2c_client *client)
	145	{
	146	struct tda9875 *tda = i2c_get_clientdata(client);
	147	unsigned char a;
	148
	149	dprintk(KERN_DEBUG "tda9875_set(%04x,%04x,%04x,%04x)\n",
	150	tda->lvol,tda->rvol,tda->bass,tda->treble);
	151
	152
	153	a = tda->lvol & 0xff;
	154	tda9875_write(client, TDA9875_MVL, a);
	155	a =tda->rvol & 0xff;
	156	tda9875_write(client, TDA9875_MVR, a);
	157	a =tda->bass & 0xff;
	158	tda9875_write(client, TDA9875_MBA, a);
	159	a =tda->treble & 0xff;
	160	tda9875_write(client, TDA9875_MTR, a);
	161	}
	162
	163	static void do_tda9875_init(struct i2c_client *client)
	164	{
	165	struct tda9875 *t = i2c_get_clientdata(client);
	166	dprintk("In tda9875_init\n");
	167	tda9875_write(client, TDA9875_CFG, 0xd0 ); /reg de config 0 (reset)/
	168	tda9875_write(client, TDA9875_MSR, 0x03 ); /* Monitor 0b00000XXX*/
	169	tda9875_write(client, TDA9875_C1MSB, 0x00 ); /Car1(FM) MSB XMHz/
	170	tda9875_write(client, TDA9875_C1MIB, 0x00 ); /Car1(FM) MIB XMHz/
	171	tda9875_write(client, TDA9875_C1LSB, 0x00 ); /Car1(FM) LSB XMHz/
	172	tda9875_write(client, TDA9875_C2MSB, 0x00 ); /Car2(NICAM) MSB XMHz/
	173	tda9875_write(client, TDA9875_C2MIB, 0x00 ); /Car2(NICAM) MIB XMHz/
	174	tda9875_write(client, TDA9875_C2LSB, 0x00 ); /Car2(NICAM) LSB XMHz/
	175	tda9875_write(client, TDA9875_DCR, 0x00 ); /Demod config 0x00/
	176	tda9875_write(client, TDA9875_DEEM, 0x44 ); /DE-Emph 0b0100 0100/
	177	tda9875_write(client, TDA9875_FMAT, 0x00 ); /FM Matrix reg 0x00/
	178	tda9875_write(client, TDA9875_SC1, 0x00 ); /* SCART 1 (SC1)*/
	179	tda9875_write(client, TDA9875_SC2, 0x01 ); /* SCART 2 (sc2)*/
	180
	181	tda9875_write(client, TDA9875_CH1V, 0x10 ); /* Channel volume 1 mute*/
	182	tda9875_write(client, TDA9875_CH2V, 0x10 ); /* Channel volume 2 mute */
	183	tda9875_write(client, TDA9875_DACOS, 0x02 ); /* sig DAC i/o(in:nicam)*/
	184	tda9875_write(client, TDA9875_ADCIS, 0x6f ); /* sig ADC input(in:mono)*/
	185	tda9875_write(client, TDA9875_LOSR, 0x00 ); /* line out (in:mono)*/
4ac97914	186	tda9875_write(client, TDA9875_AER, 0x00 ); /06 Effect (AVL+PSEUDO) /
1da177e4 LT	187	tda9875_write(client, TDA9875_MCS, 0x44 ); /* Main ch select (DAC) */
	188	tda9875_write(client, TDA9875_MVL, 0x03 ); /* Vol Main left 10dB */
	189	tda9875_write(client, TDA9875_MVR, 0x03 ); /* Vol Main right 10dB*/
	190	tda9875_write(client, TDA9875_MBA, 0x00 ); /* Main Bass Main 0dB*/
	191	tda9875_write(client, TDA9875_MTR, 0x00 ); /* Main Treble Main 0dB*/
	192	tda9875_write(client, TDA9875_ACS, 0x44 ); /* Aux chan select (dac)*/
	193	tda9875_write(client, TDA9875_AVL, 0x00 ); /* Vol Aux left 0dB*/
	194	tda9875_write(client, TDA9875_AVR, 0x00 ); /* Vol Aux right 0dB*/
	195	tda9875_write(client, TDA9875_ABA, 0x00 ); /* Aux Bass Main 0dB*/
	196	tda9875_write(client, TDA9875_ATR, 0x00 ); /* Aux Aigus Main 0dB*/
	197
	198	tda9875_write(client, TDA9875_MUT, 0xcc ); /* General mute */
	199
	200	t->mode=AUDIO_UNMUTE;
	201	t->lvol=t->rvol =0; /* 0dB */
4ac97914	202	t->bass=0; /* 0dB */
1da177e4 LT	203	t->treble=0; /* 0dB */
	204	tda9875_set(client);
	205
	206	}
	207
	208
	209	/* *********************** *
	210	* i2c interface functions *
	211	* *********************** */
	212
	213	static int tda9875_checkit(struct i2c_adapter *adap, int addr)
	214	{
	215	int dic,rev;
	216
	217	dic=i2c_read_register(adap,addr,254);
	218	rev=i2c_read_register(adap,addr,255);
	219
	220	if(dic==0 \|\| dic==2) { // tda9875 and tda9875A
	221	printk("tda9875: TDA9875%s Rev.%d detected at 0x%x\n",
	222	dic==0?"":"A", rev,addr<<1);
	223	return 1;
	224	}
	225	printk("tda9875: no such chip at 0x%x (dic=0x%x rev=0x%x)\n",addr<<1,dic,rev);
	226	return(0);
	227	}
	228
	229	static int tda9875_attach(struct i2c_adapter *adap, int addr, int kind)
	230	{
	231	struct tda9875 *t;
	232	struct i2c_client *client;
	233	dprintk("In tda9875_attach\n");
	234
7408187d	235	t = kzalloc(sizeof *t,GFP_KERNEL);
1da177e4 LT	236	if (!t)
1da177e4 LT	237	return -ENOMEM;
1da177e4 LT	238
1da177e4 LT	239	client = &t->c;
4ac97914 MCC	240	memcpy(client,&client_template,sizeof(struct i2c_client));
	241	client->adapter = adap;
	242	client->addr = addr;
1da177e4 LT	243	i2c_set_clientdata(client, t);
	244
	245	if(!tda9875_checkit(adap,addr)) {
	246	kfree(t);
	247	return 1;
	248	}
	249
	250	do_tda9875_init(client);
	251	printk(KERN_INFO "tda9875: init\n");
	252
	253	i2c_attach_client(client);
	254	return 0;
	255	}
	256
	257	static int tda9875_probe(struct i2c_adapter *adap)
	258	{
1da177e4 LT	259	if (adap->class & I2C_CLASS_TV_ANALOG)
1da177e4 LT	260	return i2c_probe(adap, &addr_data, tda9875_attach);
1da177e4 LT	261	return 0;
	262	}
	263
	264	static int tda9875_detach(struct i2c_client *client)
	265	{
	266	struct tda9875 *t = i2c_get_clientdata(client);
	267
	268	do_tda9875_init(client);
	269	i2c_detach_client(client);
	270
	271	kfree(t);
	272	return 0;
	273	}
	274
	275	static int tda9875_command(struct i2c_client *client,
	276	unsigned int cmd, void *arg)
	277	{
	278	struct tda9875 *t = i2c_get_clientdata(client);
	279
	280	dprintk("In tda9875_command...\n");
	281
	282	switch (cmd) {
4ac97914	283	/* --- v4l ioctls --- */
1da177e4 LT	284	/* take care: bttv does userspace copying, we'll get a
	285	kernel pointer here... */
	286	case VIDIOCGAUDIO:
	287	{
	288	struct video_audio *va = arg;
	289	int left,right;
	290
	291	dprintk("VIDIOCGAUDIO\n");
	292
	293	va->flags \|= VIDEO_AUDIO_VOLUME \|
	294	VIDEO_AUDIO_BASS \|
	295	VIDEO_AUDIO_TREBLE;
	296
	297	/* min is -84 max is 24 */
	298	left = (t->lvol+84)*606;
	299	right = (t->rvol+84)*606;
	300	va->volume=max(left,right);
	301	va->balance=(32768*min(left,right))/
	302	(va->volume ? va->volume : 1);
	303	va->balance=(left<right)?
	304	(65535-va->balance) : va->balance;
	305	va->bass = (t->bass+12)2427; / min -12 max +15 */
	306	va->treble = (t->treble+12)2730;/ min -12 max +12 */
	307	va->mode \|= VIDEO_SOUND_MONO;
	308
	309	break; /* VIDIOCGAUDIO case */
	310	}
	311
	312	case VIDIOCSAUDIO:
	313	{
	314	struct video_audio *va = arg;
	315	int left,right;
	316
	317	dprintk("VIDEOCSAUDIO...\n");
	318	left = (min(65536 - va->balance,32768) *
	319	va->volume) / 32768;
	320	right = (min(va->balance,(__u16)32768) *
	321	va->volume) / 32768;
	322	t->lvol = ((left/606)-84) & 0xff;
	323	if (t->lvol > 24)
	324	t->lvol = 24;
	325	if (t->lvol < -84)
	326	t->lvol = -84 & 0xff;
	327
	328	t->rvol = ((right/606)-84) & 0xff;
	329	if (t->rvol > 24)
	330	t->rvol = 24;
	331	if (t->rvol < -84)
	332	t->rvol = -84 & 0xff;
	333
	334	t->bass = ((va->bass/2400)-12) & 0xff;
	335	if (t->bass > 15)
	336	t->bass = 15;
	337	if (t->bass < -12)
	338	t->bass = -12 & 0xff;
	339
	340	t->treble = ((va->treble/2700)-12) & 0xff;
	341	if (t->treble > 12)
	342	t->treble = 12;
	343	if (t->treble < -12)
	344	t->treble = -12 & 0xff;
	345
	346
	347
348	//printk("tda9875 bal:%04x vol:%04x bass:%04x treble:%04x\n",va->balance,va->volume,va->bass,va->treble);
349
350
4ac97914	351	tda9875_set(client);
1da177e4 LT	352
	353	break;
	354
	355	} /* end of VIDEOCSAUDIO case */
	356
	357	default: /* Not VIDEOCGAUDIO or VIDEOCSAUDIO */
	358
	359	/* nothing */
	360	dprintk("Default\n");
	361
	362	} /* end of (cmd) switch */
	363
	364	return 0;
	365	}
	366
	367
	368	static struct i2c_driver driver = {
604f28e2	369	.driver = {
cab462f7	370	.name = "tda9875",
604f28e2	371	},
4ac97914	372	.id = I2C_DRIVERID_TDA9875,
1da177e4	373	.attach_adapter = tda9875_probe,
4ac97914 MCC	374	.detach_client = tda9875_detach,
4ac97914 MCC	375	.command = tda9875_command,
1da177e4 LT	376	};
	377
	378	static struct i2c_client client_template =
	379	{
4ac97914 MCC	380	.name = "tda9875",
4ac97914 MCC	381	.driver = &driver,
1da177e4 LT	382	};
	383
	384	static int __init tda9875_init(void)
	385	{
	386	return i2c_add_driver(&driver);
	387	}
	388
	389	static void __exit tda9875_fini(void)
	390	{
	391	i2c_del_driver(&driver);
	392	}
	393
	394	module_init(tda9875_init);
	395	module_exit(tda9875_fini);
	396
	397	/*
	398	* Local variables:
	399	* c-basic-offset: 8
	400	* End:
	401	*/
	402