prodigy192.c

linux 内核源代码

			   SNDRV_CTL_ELEM_ACCESS_TLV_READ),
		.name = "Master Playback Volume",
		.info = stac9460_dac_vol_info,
		.get = stac9460_dac_vol_get,
		.put = stac9460_dac_vol_put,
		.private_value = 1,
		.tlv = { .p = db_scale_dac }
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "DAC Switch",
		.count = 6,
		.info = stac9460_dac_mute_info,
		.get = stac9460_dac_mute_get,
		.put = stac9460_dac_mute_put,
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
			   SNDRV_CTL_ELEM_ACCESS_TLV_READ),
		.name = "DAC Volume",
		.count = 6,
		.info = stac9460_dac_vol_info,
		.get = stac9460_dac_vol_get,
		.put = stac9460_dac_vol_put,
		.tlv = { .p = db_scale_dac }
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "ADC Capture Switch",
		.count = 1,
		.info = stac9460_adc_mute_info,
		.get = stac9460_adc_mute_get,
		.put = stac9460_adc_mute_put,

	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
			   SNDRV_CTL_ELEM_ACCESS_TLV_READ),
		.name = "ADC Capture Volume",
		.count = 1,
		.info = stac9460_adc_vol_info,
		.get = stac9460_adc_vol_get,
		.put = stac9460_adc_vol_put,
		.tlv = { .p = db_scale_adc }
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Analog Capture Input",
		.info = stac9460_mic_sw_info,
		.get = stac9460_mic_sw_get,
		.put = stac9460_mic_sw_put,

	},
#if 0
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Capture Route",
		.info = wm_adc_mux_info,
		.get = wm_adc_mux_get,
		.put = wm_adc_mux_put,
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Headphone Amplifier Switch",
		.info = aureon_bool_info,
		.get = aureon_hpamp_get,
		.put = aureon_hpamp_put
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "DAC Deemphasis Switch",
		.info = aureon_bool_info,
		.get = aureon_deemp_get,
		.put = aureon_deemp_put
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "ADC Oversampling",
		.info = aureon_oversampling_info,
		.get = aureon_oversampling_get,
		.put = aureon_oversampling_put
	},
#endif
};


/* AK4114 - ICE1724 connections on Prodigy192 + MI/ODI/O */
/* CDTO (pin 32) -- GPIO11 pin 86
 * CDTI (pin 33) -- GPIO10 pin 77
 * CCLK (pin 34) -- GPIO9 pin 76
 * CSN  (pin 35) -- GPIO8 pin 75
 */
#define AK4114_ADDR	0x00 /* C1-C0: Chip Address
			      * (According to datasheet fixed to “00”)
			      */

/*
 * 4wire ak4114 protocol - writing data
 */
static void write_data(struct snd_ice1712 *ice, unsigned int gpio,
		       unsigned int data, int idx)
{
	for (; idx >= 0; idx--) {
		/* drop clock */
		gpio &= ~VT1724_PRODIGY192_CCLK;
		snd_ice1712_gpio_write(ice, gpio);
		udelay(1);
		/* set data */
		if (data & (1 << idx))
			gpio |= VT1724_PRODIGY192_CDOUT;
		else
			gpio &= ~VT1724_PRODIGY192_CDOUT;
		snd_ice1712_gpio_write(ice, gpio);
		udelay(1);
		/* raise clock */
		gpio |= VT1724_PRODIGY192_CCLK;
		snd_ice1712_gpio_write(ice, gpio);
		udelay(1);
	}
}

/*
 * 4wire ak4114 protocol - reading data
 */
static unsigned char read_data(struct snd_ice1712 *ice, unsigned int gpio,
			       int idx)
{
	unsigned char data = 0;

	for (; idx >= 0; idx--) {
		/* drop clock */
		gpio &= ~VT1724_PRODIGY192_CCLK;
		snd_ice1712_gpio_write(ice, gpio);
		udelay(1);
		/* read data */
		if (snd_ice1712_gpio_read(ice) & VT1724_PRODIGY192_CDIN)
			data |= (1 << idx);
		udelay(1);
		/* raise clock */
		gpio |= VT1724_PRODIGY192_CCLK;
		snd_ice1712_gpio_write(ice, gpio);
		udelay(1);
	}
	return data;
}
/*
 * 4wire ak4114 protocol - starting sequence
 */
static unsigned int prodigy192_4wire_start(struct snd_ice1712 *ice)
{
	unsigned int tmp;

	snd_ice1712_save_gpio_status(ice);
	tmp = snd_ice1712_gpio_read(ice);

	tmp |= VT1724_PRODIGY192_CCLK; /* high at init */
	tmp &= ~VT1724_PRODIGY192_CS; /* drop chip select */
	snd_ice1712_gpio_write(ice, tmp);
	udelay(1);
	return tmp;
}

/*
 * 4wire ak4114 protocol - final sequence
 */
static void prodigy192_4wire_finish(struct snd_ice1712 *ice, unsigned int tmp)
{
	tmp |= VT1724_PRODIGY192_CS; /* raise chip select */
	snd_ice1712_gpio_write(ice, tmp);
	udelay(1);
	snd_ice1712_restore_gpio_status(ice);
}

/*
 * Write data to addr register of ak4114
 */
static void prodigy192_ak4114_write(void *private_data, unsigned char addr,
			       unsigned char data)
{
	struct snd_ice1712 *ice = private_data;
	unsigned int tmp, addrdata;
	tmp = prodigy192_4wire_start(ice);
	addrdata = (AK4114_ADDR << 6) | 0x20 | (addr & 0x1f);
	addrdata = (addrdata << 8) | data;
	write_data(ice, tmp, addrdata, 15);
	prodigy192_4wire_finish(ice, tmp);
}

/*
 * Read data from addr register of ak4114
 */
static unsigned char prodigy192_ak4114_read(void *private_data,
					    unsigned char addr)
{
	struct snd_ice1712 *ice = private_data;
	unsigned int tmp;
	unsigned char data;

	tmp = prodigy192_4wire_start(ice);
	write_data(ice, tmp, (AK4114_ADDR << 6) | (addr & 0x1f), 7);
	data = read_data(ice, tmp, 7);
	prodigy192_4wire_finish(ice, tmp);
	return data;
}


static int ak4114_input_sw_info(struct snd_kcontrol *kcontrol,
	       			struct snd_ctl_elem_info *uinfo)
{
	static char *texts[2] = { "Toslink", "Coax" };

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 2;
	if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
		uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
        return 0;
}


static int ak4114_input_sw_get(struct snd_kcontrol *kcontrol,
	       		struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned char val;
		
	val = prodigy192_ak4114_read(ice, AK4114_REG_IO1);
	/* AK4114_IPS0 bit = 0 -> RX0 = Toslink
	 * AK4114_IPS0 bit = 1 -> RX1 = Coax
	 */
	ucontrol->value.enumerated.item[0] = (val & AK4114_IPS0) ? 1 : 0;
	return 0;
}

static int ak4114_input_sw_put(struct snd_kcontrol *kcontrol,
	       		struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned char new, old, itemvalue;
	int change;

	old = prodigy192_ak4114_read(ice, AK4114_REG_IO1);
	/* AK4114_IPS0 could be any bit */
	itemvalue = (ucontrol->value.enumerated.item[0]) ? 0xff : 0x00;

	new = (itemvalue & AK4114_IPS0) | (old & ~AK4114_IPS0);
	change = (new != old);
	if (change)
		prodigy192_ak4114_write(ice, AK4114_REG_IO1, new);
	return change;
}


static struct snd_kcontrol_new ak4114_controls[] __devinitdata = {
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "MIODIO IEC958 Capture Input",
		.info = ak4114_input_sw_info,
		.get = ak4114_input_sw_get,
		.put = ak4114_input_sw_put,

	}
};


static int prodigy192_ak4114_init(struct snd_ice1712 *ice)
{
	static const unsigned char ak4114_init_vals[] = {
		AK4114_RST | AK4114_PWN | AK4114_OCKS0 | AK4114_OCKS1,
		/* ice1724 expects I2S and provides clock,
		 * DEM0 disables the deemphasis filter
		 */
		AK4114_DIF_I24I2S | AK4114_DEM0 ,
		AK4114_TX1E,
		AK4114_EFH_1024 | AK4114_DIT, /* default input RX0 */
		0,
		0
	};
	static const unsigned char ak4114_init_txcsb[] = {
		0x41, 0x02, 0x2c, 0x00, 0x00
	};

	return snd_ak4114_create(ice->card,
				 prodigy192_ak4114_read,
				 prodigy192_ak4114_write,
				 ak4114_init_vals, ak4114_init_txcsb,
				 ice, &ice->spec.prodigy192.ak4114);
}

static int __devinit prodigy192_add_controls(struct snd_ice1712 *ice)
{
	unsigned int i;
	int err;

	for (i = 0; i < ARRAY_SIZE(stac_controls); i++) {
		err = snd_ctl_add(ice->card,
				  snd_ctl_new1(&stac_controls[i], ice));
		if (err < 0)
			return err;
	}
	if (ice->spec.prodigy192.ak4114) {
		/* ak4114 is connected */
		for (i = 0; i < ARRAY_SIZE(ak4114_controls); i++) {
			err = snd_ctl_add(ice->card,
					  snd_ctl_new1(&ak4114_controls[i],
						       ice));
			if (err < 0)
				return err;
		}
		err = snd_ak4114_build(ice->spec.prodigy192.ak4114,
				NULL, /* ak4114 in MIO/DI/O handles no IEC958 output */
				ice->pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream);
		if (err < 0)
			return err;
	}
	return 0;
}

/*
 * check for presence of MI/ODI/O add-on card with digital inputs
 */
static int prodigy192_miodio_exists(struct snd_ice1712 *ice)
{

	unsigned char orig_value;
	const unsigned char test_data = 0xd1;	/* random value */
	unsigned char addr = AK4114_REG_INT0_MASK; /* random SAFE address */
	int exists = 0;

	orig_value = prodigy192_ak4114_read(ice, addr);
	prodigy192_ak4114_write(ice, addr, test_data);
	if (prodigy192_ak4114_read(ice, addr) == test_data) {
		/* ak4114 seems to communicate, apparently exists */
		/* writing back original value */
		prodigy192_ak4114_write(ice, addr, orig_value);
		exists = 1;
	}
	return exists;
}

/*
 * initialize the chip
 */
static int __devinit prodigy192_init(struct snd_ice1712 *ice)
{
	static const unsigned short stac_inits_prodigy[] = {
		STAC946X_RESET, 0,
/*		STAC946X_MASTER_VOLUME, 0,
		STAC946X_LF_VOLUME, 0,
		STAC946X_RF_VOLUME, 0,
		STAC946X_LR_VOLUME, 0,
		STAC946X_RR_VOLUME, 0,
		STAC946X_CENTER_VOLUME, 0,
		STAC946X_LFE_VOLUME, 0,*/
		(unsigned short)-1
	};
	const unsigned short *p;
	int err = 0;

	/* prodigy 192 */
	ice->num_total_dacs = 6;
	ice->num_total_adcs = 2;
	ice->vt1720 = 0;  /* ice1724, e.g. 23 GPIOs */
	
	/* initialize codec */
	p = stac_inits_prodigy;
	for (; *p != (unsigned short)-1; p += 2)
		stac9460_put(ice, p[0], p[1]);

	/* MI/ODI/O add on card with AK4114 */
	if (prodigy192_miodio_exists(ice)) {
		err = prodigy192_ak4114_init(ice);
		/* from this moment if err = 0 then
		 * ice->spec.prodigy192.ak4114 should not be null
		 */
		snd_printdd("AK4114 initialized with status %d\n", err);
	} else
		snd_printdd("AK4114 not found\n");
	if (err < 0)
		return err;

	return 0;
}


/*
 * Aureon boards don't provide the EEPROM data except for the vendor IDs.
 * hence the driver needs to sets up it properly.
 */

static unsigned char prodigy71_eeprom[] __devinitdata = {
	[ICE_EEP2_SYSCONF]     = 0x6a,	/* 49MHz crystal, mpu401,
					 * spdif-in+ 1 stereo ADC,
					 * 3 stereo DACs
					 */
	[ICE_EEP2_ACLINK]      = 0x80,	/* I2S */
	[ICE_EEP2_I2S]         = 0xf8,	/* vol, 96k, 24bit, 192k */
	[ICE_EEP2_SPDIF]       = 0xc3,	/* out-en, out-int, spdif-in */
	[ICE_EEP2_GPIO_DIR]    = 0xff,
	[ICE_EEP2_GPIO_DIR1]   = ~(VT1724_PRODIGY192_CDIN >> 8) ,
	[ICE_EEP2_GPIO_DIR2]   = 0xbf,
	[ICE_EEP2_GPIO_MASK]   = 0x00,
	[ICE_EEP2_GPIO_MASK1]  = 0x00,
	[ICE_EEP2_GPIO_MASK2]  = 0x00,
	[ICE_EEP2_GPIO_STATE]  = 0x00,
	[ICE_EEP2_GPIO_STATE1] = 0x00,
	[ICE_EEP2_GPIO_STATE2] = 0x10,  /* GPIO20: 0 = CD drive dig. input
					 * passthrough,
					 * 1 = SPDIF-OUT from ice1724
					 */
};


/* entry point */
struct snd_ice1712_card_info snd_vt1724_prodigy192_cards[] __devinitdata = {
	{
		.subvendor = VT1724_SUBDEVICE_PRODIGY192VE,
		.name = "Audiotrak Prodigy 192",
		.model = "prodigy192",
		.chip_init = prodigy192_init,
		.build_controls = prodigy192_add_controls,
		.eeprom_size = sizeof(prodigy71_eeprom),
		.eeprom_data = prodigy71_eeprom,
	},
	{ } /* terminator */
};