tvaudio.c

microwindows移植到S3C44B0的源码

static int tda9874a_NCONR = 0x01;	/* default NICAM config.: AMSEL=0,AMUTE=1 */
static int tda9874a_ESP = 0x07;		/* default standard: NICAM D/K */
static int tda9874a_dic = -1;		/* device id. code */

/* insmod options for tda9874a */
static int tda9874a_SIF = -1;
static int tda9874a_AMSEL = -1;
static int tda9874a_STD = -1;
MODULE_PARM(tda9874a_SIF,"i");
MODULE_PARM(tda9874a_AMSEL,"i");
MODULE_PARM(tda9874a_STD,"i");

/*
 * initialization table for tda9874 decoder:
 *  - carrier 1 freq. registers (3 bytes)
 *  - carrier 2 freq. registers (3 bytes)
 *  - demudulator config register
 *  - FM de-emphasis register (slow identification mode)
 * Note: frequency registers must be written in single i2c transfer.
 */
static struct tda9874a_MODES {
	char *name;
	audiocmd cmd;
} tda9874a_modelist[9] = {
  {	"A2, B/G",
	{ 9, { TDA9874A_C1FRA, 0x72,0x95,0x55, 0x77,0xA0,0x00, 0x00,0x00 }} },
  {	"A2, M (Korea)",
	{ 9, { TDA9874A_C1FRA, 0x5D,0xC0,0x00, 0x62,0x6A,0xAA, 0x20,0x22 }} },
  {	"A2, D/K (1)",
	{ 9, { TDA9874A_C1FRA, 0x87,0x6A,0xAA, 0x82,0x60,0x00, 0x00,0x00 }} },
  {	"A2, D/K (2)",
	{ 9, { TDA9874A_C1FRA, 0x87,0x6A,0xAA, 0x8C,0x75,0x55, 0x00,0x00 }} },
  {	"A2, D/K (3)",
	{ 9, { TDA9874A_C1FRA, 0x87,0x6A,0xAA, 0x77,0xA0,0x00, 0x00,0x00 }} },
  {	"NICAM, I",
	{ 9, { TDA9874A_C1FRA, 0x7D,0x00,0x00, 0x88,0x8A,0xAA, 0x08,0x33 }} },
  {	"NICAM, B/G",
	{ 9, { TDA9874A_C1FRA, 0x72,0x95,0x55, 0x79,0xEA,0xAA, 0x08,0x33 }} },
  {	"NICAM, D/K", /* default */
	{ 9, { TDA9874A_C1FRA, 0x87,0x6A,0xAA, 0x79,0xEA,0xAA, 0x08,0x33 }} },
  {	"NICAM, L",
	{ 9, { TDA9874A_C1FRA, 0x87,0x6A,0xAA, 0x79,0xEA,0xAA, 0x09,0x33 }} }
};

static int tda9874a_setup(struct CHIPSTATE *chip)
{
	chip_write(chip, TDA9874A_AGCGR, 0x00); /* 0 dB */
	chip_write(chip, TDA9874A_GCONR, tda9874a_GCONR);
	chip_write(chip, TDA9874A_MSR, (tda9874a_mode) ? 0x03:0x02);
	if(tda9874a_dic == 0x11) {
		chip_write(chip, TDA9874A_FMMR, 0x80);
	} else { /* dic == 0x07 */
		chip_cmd(chip,"tda9874_modelist",&tda9874a_modelist[tda9874a_STD].cmd);
		chip_write(chip, TDA9874A_FMMR, 0x00);
	}
	chip_write(chip, TDA9874A_C1OLAR, 0x00); /* 0 dB */
	chip_write(chip, TDA9874A_C2OLAR, 0x00); /* 0 dB */
	chip_write(chip, TDA9874A_NCONR, tda9874a_NCONR);
	chip_write(chip, TDA9874A_NOLAR, 0x00); /* 0 dB */
	/* Note: If signal quality is poor you may want to change NICAM */
	/* error limit registers (NLELR and NUELR) to some greater values. */
	/* Then the sound would remain stereo, but won't be so clear. */
	chip_write(chip, TDA9874A_NLELR, 0x14); /* default */
	chip_write(chip, TDA9874A_NUELR, 0x50); /* default */

	if(tda9874a_dic == 0x11) {
		chip_write(chip, TDA9874A_AMCONR, 0xf9);
		chip_write(chip, TDA9874A_SDACOSR, (tda9874a_mode) ? 0x81:0x80);
		chip_write(chip, TDA9874A_AOSR, 0x80);
		chip_write(chip, TDA9874A_MDACOSR, (tda9874a_mode) ? 0x82:0x80);
		chip_write(chip, TDA9874A_ESP, tda9874a_ESP);
	} else { /* dic == 0x07 */
		chip_write(chip, TDA9874A_AMCONR, 0xfb);
		chip_write(chip, TDA9874A_SDACOSR, (tda9874a_mode) ? 0x81:0x80);
		chip_write(chip, TDA9874A_AOSR, 0x00); // or 0x10
	}
	dprintk("tda9874a_setup(): %s [0x%02X].\n",
		tda9874a_modelist[tda9874a_STD].name,tda9874a_STD);
	return 1;
}

static int tda9874a_getmode(struct CHIPSTATE *chip)
{
	int dsr,nsr,mode;
	int necr; /* just for debugging */

	mode = VIDEO_SOUND_MONO;

	if(-1 == (dsr = chip_read2(chip,TDA9874A_DSR)))
		return mode;
	if(-1 == (nsr = chip_read2(chip,TDA9874A_NSR)))
		return mode;
	if(-1 == (necr = chip_read2(chip,TDA9874A_NECR)))
		return mode;

	/* need to store dsr/nsr somewhere */
	chip->shadow.bytes[MAXREGS-2] = dsr;
	chip->shadow.bytes[MAXREGS-1] = nsr;

	if(tda9874a_mode) {
		/* Note: DSR.RSSF and DSR.AMSTAT bits are also checked.
		 * If NICAM auto-muting is enabled, DSR.AMSTAT=1 indicates
		 * that sound has (temporarily) switched from NICAM to
		 * mono FM (or AM) on 1st sound carrier due to high NICAM bit
		 * error count. So in fact there is no stereo in this case :-(
		 * But changing the mode to VIDEO_SOUND_MONO would switch
		 * external 4052 multiplexer in audio_hook().
		 */
#if 0
		if((nsr & 0x02) && !(dsr & 0x10)) /* NSR.S/MB=1 and DSR.AMSTAT=0 */
			mode |= VIDEO_SOUND_STEREO;
#else
		if(nsr & 0x02) /* NSR.S/MB=1 */
			mode |= VIDEO_SOUND_STEREO;
#endif
		if(nsr & 0x01) /* NSR.D/SB=1 */ 
			mode |= VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2;
	} else {
		if(dsr & 0x02) /* DSR.IDSTE=1 */
			mode |= VIDEO_SOUND_STEREO;
		if(dsr & 0x04) /* DSR.IDDUA=1 */
			mode |= VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2;
	}

	dprintk("tda9874a_getmode(): DSR=0x%X, NSR=0x%X, NECR=0x%X, return: %d.\n",
		 dsr, nsr, necr, mode);
	return mode;
}

static void tda9874a_setmode(struct CHIPSTATE *chip, int mode)
{
	/* Disable/enable NICAM auto-muting (based on DSR.RSSF status bit). */
	/* If auto-muting is disabled, we can hear a signal of degrading quality. */
	if(tda9874a_mode) {
		if(chip->shadow.bytes[MAXREGS-2] & 0x20) /* DSR.RSSF=1 */
			tda9874a_NCONR &= 0xfe; /* enable */
		else
			tda9874a_NCONR |= 0x01; /* disable */
		chip_write(chip, TDA9874A_NCONR, tda9874a_NCONR);
	}

	/* Note: TDA9874A supports automatic FM dematrixing (FMMR register)
	 * and has auto-select function for audio output (AOSR register).
	 * Old TDA9874H doesn't support these features.
	 * TDA9874A also has additional mono output pin (OUTM), which
	 * on same (all?) tv-cards is not used, anyway (as well as MONOIN).
	 */
	if(tda9874a_dic == 0x11) {
		int aosr = 0x80;
		int mdacosr = (tda9874a_mode) ? 0x82:0x80;

		switch(mode) {
		case VIDEO_SOUND_MONO:
		case VIDEO_SOUND_STEREO:
			break;
		case VIDEO_SOUND_LANG1:
			aosr = 0x80; /* auto-select, dual A/A */
			mdacosr = (tda9874a_mode) ? 0x82:0x80;
			break;
		case VIDEO_SOUND_LANG2:
			aosr = 0xa0; /* auto-select, dual B/B */
			mdacosr = (tda9874a_mode) ? 0x83:0x81;
			break;
		default:
			chip->mode = 0;
			return;
		}
		chip_write(chip, TDA9874A_AOSR, aosr);
		chip_write(chip, TDA9874A_MDACOSR, mdacosr);

		dprintk("tda9874a_setmode(): req. mode %d; AOSR=0x%X, MDACOSR=0x%X.\n",
			mode, aosr, mdacosr);

	} else { /* dic == 0x07 */
		int fmmr,aosr;

		switch(mode) {
		case VIDEO_SOUND_MONO:
			fmmr = 0x00; /* mono */
			aosr = 0x10; /* A/A */
			break;
		case VIDEO_SOUND_STEREO:
			if(tda9874a_mode) {
				fmmr = 0x00;
				aosr = 0x00; /* handled by NICAM auto-mute */
			} else {
				fmmr = (tda9874a_ESP == 1) ? 0x05 : 0x04; /* stereo */
				aosr = 0x00;
			}
			break;
		case VIDEO_SOUND_LANG1:
			fmmr = 0x02; /* dual */
			aosr = 0x10; /* dual A/A */
			break;
		case VIDEO_SOUND_LANG2:
			fmmr = 0x02; /* dual */
			aosr = 0x20; /* dual B/B */
			break;
		default:
			chip->mode = 0;
			return;
		}
		chip_write(chip, TDA9874A_FMMR, fmmr);
		chip_write(chip, TDA9874A_AOSR, aosr);

		dprintk("tda9874a_setmode(): req. mode %d; FMMR=0x%X, AOSR=0x%X.\n",
			mode, fmmr, aosr);
	}
}

static int tda9874a_checkit(struct CHIPSTATE *chip)
{
	int dic,sic;	/* device id. and software id. codes */

	if(-1 == (dic = chip_read2(chip,TDA9874A_DIC)))
		return 0;
	if(-1 == (sic = chip_read2(chip,TDA9874A_SIC)))
		return 0;

	dprintk("tda9874a_checkit(): DIC=0x%X, SIC=0x%X.\n", dic, sic);

	if((dic == 0x11)||(dic == 0x07)) {
		dprintk("tvaudio: found tda9874%s.\n",(dic == 0x11) ? "a (new)":"h (old)");
		tda9874a_dic = dic;	/* remember device id. */
		return 1;
	}
	return 0;	/* not found */
}

static int tda9874a_initialize(struct CHIPSTATE *chip)
{
	if(tda9874a_SIF != -1) {
		if(tda9874a_SIF == 1)
			tda9874a_GCONR = 0xc0;	/* sound IF input 1 */
		else if(tda9874a_SIF == 2)
			tda9874a_GCONR = 0xc1;	/* sound IF input 2 */
		else
			printk(KERN_WARNING "tda9874a: SIF parameter must be 1 or 2.\n");
	}

	if(tda9874a_STD != -1) {
		if((tda9874a_STD >= 0)&&(tda9874a_STD <= 8)) {
			tda9874a_ESP = tda9874a_STD;
			tda9874a_mode = (tda9874a_STD < 5) ? 0 : 1;
		} else {
			printk(KERN_WARNING "tda9874a: STD parameter must be between 0 and 8.\n");
		}
	}

	if(tda9874a_AMSEL != -1) {
		if(tda9874a_AMSEL == 0)
			tda9874a_NCONR = 0x01; /* auto-mute: analog mono input */
		else if(tda9874a_AMSEL == 1)
			tda9874a_NCONR = 0x05; /* auto-mute: 1st carrier FM or AM */
		else
			printk(KERN_WARNING "tda9874a: AMSEL parameter must be 0 or 1.\n");
	}

	tda9874a_setup(chip);

	return 0;
}


/* ---------------------------------------------------------------------- */
/* audio chip descriptions - defines+functions for tea6420                */

#define TEA6300_VL         0x00  /* volume left */
#define TEA6300_VR         0x01  /* volume right */
#define TEA6300_BA         0x02  /* bass */
#define TEA6300_TR         0x03  /* treble */
#define TEA6300_FA         0x04  /* fader control */
#define TEA6300_S          0x05  /* switch register */
                                 /* values for those registers: */
#define TEA6300_S_SA       0x01  /* stereo A input */
#define TEA6300_S_SB       0x02  /* stereo B */
#define TEA6300_S_SC       0x04  /* stereo C */
#define TEA6300_S_GMU      0x80  /* general mute */

#define TEA6420_S_SA       0x00  /* stereo A input */
#define TEA6420_S_SB       0x01  /* stereo B */
#define TEA6420_S_SC       0x02  /* stereo C */
#define TEA6420_S_SD       0x03  /* stereo D */
#define TEA6420_S_SE       0x04  /* stereo E */
#define TEA6420_S_GMU      0x05  /* general mute */

static int tea6300_shift10(int val) { return val >> 10; }
static int tea6300_shift12(int val) { return val >> 12; }


/* ---------------------------------------------------------------------- */
/* audio chip descriptions - defines+functions for tda8425                */

#define TDA8425_VL         0x00  /* volume left */
#define TDA8425_VR         0x01  /* volume right */
#define TDA8425_BA         0x02  /* bass */
#define TDA8425_TR         0x03  /* treble */
#define TDA8425_S1         0x08  /* switch functions */
                                 /* values for those registers: */
#define TDA8425_S1_OFF     0xEE  /* audio off (mute on) */
#define TDA8425_S1_ON      0xCE  /* audio on (mute off) - "linear stereo" mode */

static int tda8425_shift10(int val) { return val >> 10 | 0xc0; }
static int tda8425_shift12(int val) { return val >> 12 | 0xf0; }


/* ---------------------------------------------------------------------- */
/* audio chip descriptions - defines+functions for pic16c54 (PV951)       */

/* the registers of 16C54, I2C sub address. */
#define PIC16C54_REG_KEY_CODE     0x01	       /* Not use. */
#define PIC16C54_REG_MISC         0x02

/* bit definition of the RESET register, I2C data. */
#define PIC16C54_MISC_RESET_REMOTE_CTL 0x01 /* bit 0, Reset to receive the key */
                                            /*        code of remote controller */
#define PIC16C54_MISC_MTS_MAIN         0x02 /* bit 1 */
#define PIC16C54_MISC_MTS_SAP          0x04 /* bit 2 */
#define PIC16C54_MISC_MTS_BOTH         0x08 /* bit 3 */
#define PIC16C54_MISC_SND_MUTE         0x10 /* bit 4, Mute Audio(Line-in and Tuner) */
#define PIC16C54_MISC_SND_NOTMUTE      0x20 /* bit 5 */
#define PIC16C54_MISC_SWITCH_TUNER     0x40 /* bit 6	, Switch to Line-in */
#define PIC16C54_MISC_SWITCH_LINE      0x80 /* bit 7	, Switch to Tuner */


/* ---------------------------------------------------------------------- */
/* audio chip descriptions - struct CHIPDESC                              */

/* insmod options to enable/disable individual audio chips */
int tda8425  = 1;
int tda9840  = 1;
int tda9850  = 1;
int tda9855  = 1;
int tda9873  = 1;
int tda9874a = 1;
int tea6300  = 0;
int tea6420  = 1;
int pic16c54 = 1;
MODULE_PARM(tda8425,"i");
MODULE_PARM(tda9840,"i");
MODULE_PARM(tda9850,"i");
MODULE_PARM(tda9855,"i");
MODULE_PARM(tda9873,"i");
MODULE_PARM(tda9874a,"i");
MODULE_PARM(tea6300,"i");
MODULE_PARM(tea6420,"i");
MODULE_PARM(pic16c54,"i");

static struct CHIPDESC chiplist[] = {
	{
		name:       "tda9840",
		id:         I2C_DRIVERID_TDA9840,
		insmodopt:  &tda9840,
		addr_lo:    I2C_TDA9840 >> 1,
		addr_hi:    I2C_TDA9840 >> 1,
		registers:  5,

		getmode:    tda9840_getmode,
		setmode:    tda9840_setmode,
		checkmode:  generic_checkmode,

	        init:       { 2, { TDA9840_TEST, TDA9840_TEST_INT1SN
				/* ,TDA9840_SW, TDA9840_MONO */} }
	},
	{
		name:       "tda9873h",
		id:         I2C_DRIVERID_TDA9873,
		checkit:    tda9873_checkit,
		insmodopt:  &tda9873,
		addr_lo:    I2C_TDA985x_L >> 1,
		addr_hi:    I2C_TDA985x_H >> 1,
		registers:  3,
		flags:      CHIP_HAS_INPUTSEL,

		getmode:    tda9873_getmode,
		setmode:    tda9873_setmode,
		checkmode:  generic_checkmode,

		init:       { 4, { TDA9873_SW, 0xa4, 0x06, 0x03 } },
		inputreg:   TDA9873_SW,
		inputmute:  TDA9873_MUTE | TDA9873_AUTOMUTE,
		inputmap:   {0xa0, 0xa2, 0xa0, 0xa0, 0xc0},
		inputmask:  TDA9873_INP_MASK | TDA9873_MUTE | TDA9873_AUTOMUTE
		
	},
	{