ews.c

LINUX 2.6.17.4的源码

	.cif = 1, /* CIF high */
	.data_mask = ICE1712_EWS88_SERIAL_DATA,
	.clk_mask = ICE1712_EWS88_SERIAL_CLOCK,
	.cs_mask = 0,
	.cs_addr = 0,
	.cs_none = 0, /* no chip select on gpio */
	.add_flags = ICE1712_EWS88_RW, /* set rw bit high */
	.mask_flags = 0,
};

static struct snd_akm4xxx akm_ewx2496 __devinitdata = {
	.num_adcs = 2,
	.num_dacs = 2,
	.type = SND_AK4524,
	.ops = {
		.lock = ewx2496_ak4524_lock
	}
};

static struct snd_ak4xxx_private akm_ewx2496_priv __devinitdata = {
	.caddr = 2,
	.cif = 1, /* CIF high */
	.data_mask = ICE1712_EWS88_SERIAL_DATA,
	.clk_mask = ICE1712_EWS88_SERIAL_CLOCK,
	.cs_mask = ICE1712_EWX2496_AK4524_CS,
	.cs_addr = ICE1712_EWX2496_AK4524_CS,
	.cs_none = 0,
	.add_flags = ICE1712_EWS88_RW, /* set rw bit high */
	.mask_flags = 0,
};

static struct snd_akm4xxx akm_6fire __devinitdata = {
	.num_adcs = 6,
	.num_dacs = 6,
	.type = SND_AK4524,
	.ops = {
		.lock = dmx6fire_ak4524_lock
	}
};

static struct snd_ak4xxx_private akm_6fire_priv __devinitdata = {
	.caddr = 2,
	.cif = 1, /* CIF high */
	.data_mask = ICE1712_6FIRE_SERIAL_DATA,
	.clk_mask = ICE1712_6FIRE_SERIAL_CLOCK,
	.cs_mask = 0,
	.cs_addr = 0, /* set later */
	.cs_none = 0,
	.add_flags = ICE1712_6FIRE_RW, /* set rw bit high */
	.mask_flags = 0,
};

/*
 * initialize the chip
 */

/* 6fire specific */
#define PCF9554_REG_INPUT      0
#define PCF9554_REG_OUTPUT     1
#define PCF9554_REG_POLARITY   2
#define PCF9554_REG_CONFIG     3

static int snd_ice1712_6fire_write_pca(struct snd_ice1712 *ice, unsigned char reg, unsigned char data);

static int __devinit snd_ice1712_ews_init(struct snd_ice1712 *ice)
{
	int err;
	struct snd_akm4xxx *ak;

	/* set the analog DACs */
	switch (ice->eeprom.subvendor) {
	case ICE1712_SUBDEVICE_EWX2496:
		ice->num_total_dacs = 2;
		ice->num_total_adcs = 2;
		break;	
	case ICE1712_SUBDEVICE_EWS88MT:
	case ICE1712_SUBDEVICE_EWS88MT_NEW:
	case ICE1712_SUBDEVICE_PHASE88:
		ice->num_total_dacs = 8;
		ice->num_total_adcs = 8;
		break;
	case ICE1712_SUBDEVICE_EWS88D:
		/* Note: not analog but ADAT I/O */
		ice->num_total_dacs = 8;
		ice->num_total_adcs = 8;
		break;
	case ICE1712_SUBDEVICE_DMX6FIRE:
		ice->num_total_dacs = 6;
		ice->num_total_adcs = 6;
		break;
	}

	/* create i2c */
	if ((err = snd_i2c_bus_create(ice->card, "ICE1712 GPIO 1", NULL, &ice->i2c)) < 0) {
		snd_printk(KERN_ERR "unable to create I2C bus\n");
		return err;
	}
	ice->i2c->private_data = ice;
	ice->i2c->hw_ops.bit = &snd_ice1712_ewx_cs8427_bit_ops;

	/* create i2c devices */
	switch (ice->eeprom.subvendor) {
	case ICE1712_SUBDEVICE_DMX6FIRE:
		if ((err = snd_i2c_device_create(ice->i2c, "PCF9554", ICE1712_6FIRE_PCF9554_ADDR, &ice->spec.i2cdevs[EWS_I2C_6FIRE])) < 0) {
			snd_printk(KERN_ERR "PCF9554 initialization failed\n");
			return err;
		}
		snd_ice1712_6fire_write_pca(ice, PCF9554_REG_CONFIG, 0x80);
		break;
	case ICE1712_SUBDEVICE_EWS88MT:
	case ICE1712_SUBDEVICE_EWS88MT_NEW:
	case ICE1712_SUBDEVICE_PHASE88:
		if ((err = snd_i2c_device_create(ice->i2c, "CS8404", ICE1712_EWS88MT_CS8404_ADDR, &ice->spec.i2cdevs[EWS_I2C_CS8404])) < 0)
			return err;
		if ((err = snd_i2c_device_create(ice->i2c, "PCF8574 (1st)", ICE1712_EWS88MT_INPUT_ADDR, &ice->spec.i2cdevs[EWS_I2C_PCF1])) < 0)
			return err;
		if ((err = snd_i2c_device_create(ice->i2c, "PCF8574 (2nd)", ICE1712_EWS88MT_OUTPUT_ADDR, &ice->spec.i2cdevs[EWS_I2C_PCF2])) < 0)
			return err;
		/* Check if the front module is connected */
		if ((err = snd_ice1712_ews88mt_chip_select(ice, 0x0f)) < 0)
			return err;
		break;
	case ICE1712_SUBDEVICE_EWS88D:
		if ((err = snd_i2c_device_create(ice->i2c, "PCF8575", ICE1712_EWS88D_PCF_ADDR, &ice->spec.i2cdevs[EWS_I2C_88D])) < 0)
			return err;
		break;
	}

	/* set up SPDIF interface */
	switch (ice->eeprom.subvendor) {
	case ICE1712_SUBDEVICE_EWX2496:
		if ((err = snd_ice1712_init_cs8427(ice, CS8427_BASE_ADDR)) < 0)
			return err;
		snd_cs8427_reg_write(ice->cs8427, CS8427_REG_RECVERRMASK, CS8427_UNLOCK | CS8427_CONF | CS8427_BIP | CS8427_PAR);
		break;
	case ICE1712_SUBDEVICE_DMX6FIRE:
		if ((err = snd_ice1712_init_cs8427(ice, ICE1712_6FIRE_CS8427_ADDR)) < 0)
			return err;
		snd_cs8427_reg_write(ice->cs8427, CS8427_REG_RECVERRMASK, CS8427_UNLOCK | CS8427_CONF | CS8427_BIP | CS8427_PAR);
		break;
	case ICE1712_SUBDEVICE_EWS88MT:
	case ICE1712_SUBDEVICE_EWS88MT_NEW:
	case ICE1712_SUBDEVICE_PHASE88:
	case ICE1712_SUBDEVICE_EWS88D:
		/* set up CS8404 */
		ice->spdif.ops.open = ews88_open_spdif;
		ice->spdif.ops.setup_rate = ews88_setup_spdif;
		ice->spdif.ops.default_get = ews88_spdif_default_get;
		ice->spdif.ops.default_put = ews88_spdif_default_put;
		ice->spdif.ops.stream_get = ews88_spdif_stream_get;
		ice->spdif.ops.stream_put = ews88_spdif_stream_put;
		/* Set spdif defaults */
		snd_ice1712_ews_cs8404_spdif_write(ice, ice->spdif.cs8403_bits);
		break;
	}

	/* no analog? */
	switch (ice->eeprom.subvendor) {
	case ICE1712_SUBDEVICE_EWS88D:
		return 0;
	}

	/* analog section */
	ak = ice->akm = kmalloc(sizeof(struct snd_akm4xxx), GFP_KERNEL);
	if (! ak)
		return -ENOMEM;
	ice->akm_codecs = 1;

	switch (ice->eeprom.subvendor) {
	case ICE1712_SUBDEVICE_EWS88MT:
	case ICE1712_SUBDEVICE_EWS88MT_NEW:
	case ICE1712_SUBDEVICE_PHASE88:
		err = snd_ice1712_akm4xxx_init(ak, &akm_ews88mt, &akm_ews88mt_priv, ice);
		break;
	case ICE1712_SUBDEVICE_EWX2496:
		err = snd_ice1712_akm4xxx_init(ak, &akm_ewx2496, &akm_ewx2496_priv, ice);
		break;
	case ICE1712_SUBDEVICE_DMX6FIRE:
		err = snd_ice1712_akm4xxx_init(ak, &akm_6fire, &akm_6fire_priv, ice);
		break;
	default:
		err = 0;
	}

	return err;
}

/*
 * EWX 24/96 specific controls
 */

/* i/o sensitivity - this callback is shared among other devices, too */
static int snd_ice1712_ewx_io_sense_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo){

	static char *texts[2] = {
		"+4dBu", "-10dBV",
	};
	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 2;
	if (uinfo->value.enumerated.item >= 2)
		uinfo->value.enumerated.item = 1;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
	return 0;
}

static int snd_ice1712_ewx_io_sense_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned char mask = kcontrol->private_value & 0xff;
	
	snd_ice1712_save_gpio_status(ice);
	ucontrol->value.enumerated.item[0] = snd_ice1712_read(ice, ICE1712_IREG_GPIO_DATA) & mask ? 1 : 0;
	snd_ice1712_restore_gpio_status(ice);
	return 0;
}

static int snd_ice1712_ewx_io_sense_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned char mask = kcontrol->private_value & 0xff;
	int val, nval;

	if (kcontrol->private_value & (1 << 31))
		return -EPERM;
	nval = ucontrol->value.enumerated.item[0] ? mask : 0;
	snd_ice1712_save_gpio_status(ice);
	val = snd_ice1712_read(ice, ICE1712_IREG_GPIO_DATA);
	nval |= val & ~mask;
	snd_ice1712_write(ice, ICE1712_IREG_GPIO_DATA, nval);
	snd_ice1712_restore_gpio_status(ice);
	return val != nval;
}

static struct snd_kcontrol_new snd_ice1712_ewx2496_controls[] __devinitdata = {
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Input Sensitivity Switch",
		.info = snd_ice1712_ewx_io_sense_info,
		.get = snd_ice1712_ewx_io_sense_get,
		.put = snd_ice1712_ewx_io_sense_put,
		.private_value = ICE1712_EWX2496_AIN_SEL,
	},
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Output Sensitivity Switch",
		.info = snd_ice1712_ewx_io_sense_info,
		.get = snd_ice1712_ewx_io_sense_get,
		.put = snd_ice1712_ewx_io_sense_put,
		.private_value = ICE1712_EWX2496_AOUT_SEL,
	},
};


/*
 * EWS88MT specific controls
 */
/* analog output sensitivity;; address 0x48 bit 6 */
static int snd_ice1712_ews88mt_output_sense_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned char data;

	snd_i2c_lock(ice->i2c);
	if (snd_i2c_readbytes(ice->spec.i2cdevs[EWS_I2C_PCF2], &data, 1) != 1) {
		snd_i2c_unlock(ice->i2c);
		return -EIO;
	}
	snd_i2c_unlock(ice->i2c);
	ucontrol->value.enumerated.item[0] = data & ICE1712_EWS88MT_OUTPUT_SENSE ? 1 : 0; /* high = -10dBV, low = +4dBu */
	return 0;
}

/* analog output sensitivity;; address 0x48 bit 6 */
static int snd_ice1712_ews88mt_output_sense_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	unsigned char data, ndata;

	snd_i2c_lock(ice->i2c);
	if (snd_i2c_readbytes(ice->spec.i2cdevs[EWS_I2C_PCF2], &data, 1) != 1) {
		snd_i2c_unlock(ice->i2c);
		return -EIO;
	}
	ndata = (data & ~ICE1712_EWS88MT_OUTPUT_SENSE) | (ucontrol->value.enumerated.item[0] ? ICE1712_EWS88MT_OUTPUT_SENSE : 0);
	if (ndata != data && snd_i2c_sendbytes(ice->spec.i2cdevs[EWS_I2C_PCF2], &ndata, 1) != 1) {
		snd_i2c_unlock(ice->i2c);
		return -EIO;
	}
	snd_i2c_unlock(ice->i2c);
	return ndata != data;
}

/* analog input sensitivity; address 0x46 */
static int snd_ice1712_ews88mt_input_sense_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int channel = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
	unsigned char data;

	snd_assert(channel >= 0 && channel <= 7, return 0);
	snd_i2c_lock(ice->i2c);
	if (snd_i2c_readbytes(ice->spec.i2cdevs[EWS_I2C_PCF1], &data, 1) != 1) {
		snd_i2c_unlock(ice->i2c);
		return -EIO;
	}
	/* reversed; high = +4dBu, low = -10dBV */
	ucontrol->value.enumerated.item[0] = data & (1 << channel) ? 0 : 1;
	snd_i2c_unlock(ice->i2c);
	return 0;
}

/* analog output sensitivity; address 0x46 */
static int snd_ice1712_ews88mt_input_sense_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int channel = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
	unsigned char data, ndata;

	snd_assert(channel >= 0 && channel <= 7, return 0);
	snd_i2c_lock(ice->i2c);
	if (snd_i2c_readbytes(ice->spec.i2cdevs[EWS_I2C_PCF1], &data, 1) != 1) {
		snd_i2c_unlock(ice->i2c);
		return -EIO;
	}
	ndata = (data & ~(1 << channel)) | (ucontrol->value.enumerated.item[0] ? 0 : (1 << channel));
	if (ndata != data && snd_i2c_sendbytes(ice->spec.i2cdevs[EWS_I2C_PCF1], &ndata, 1) != 1) {
		snd_i2c_unlock(ice->i2c);
		return -EIO;
	}
	snd_i2c_unlock(ice->i2c);
	return ndata != data;
}

static struct snd_kcontrol_new snd_ice1712_ews88mt_input_sense __devinitdata = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Input Sensitivity Switch",
	.info = snd_ice1712_ewx_io_sense_info,
	.get = snd_ice1712_ews88mt_input_sense_get,
	.put = snd_ice1712_ews88mt_input_sense_put,
	.count = 8,
};

static struct snd_kcontrol_new snd_ice1712_ews88mt_output_sense __devinitdata = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Output Sensitivity Switch",