ews.c

LINUX 2.6.17.4的源码

	.info = snd_ice1712_ewx_io_sense_info,
	.get = snd_ice1712_ews88mt_output_sense_get,
	.put = snd_ice1712_ews88mt_output_sense_put,
};


/*
 * EWS88D specific controls
 */

static int snd_ice1712_ews88d_control_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 1;
	return 0;
}

static int snd_ice1712_ews88d_control_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int shift = kcontrol->private_value & 0xff;
	int invert = (kcontrol->private_value >> 8) & 1;
	unsigned char data[2];
	
	snd_i2c_lock(ice->i2c);
	if (snd_i2c_readbytes(ice->spec.i2cdevs[EWS_I2C_88D], data, 2) != 2) {
		snd_i2c_unlock(ice->i2c);
		return -EIO;
	}
	snd_i2c_unlock(ice->i2c);
	data[0] = (data[shift >> 3] >> (shift & 7)) & 0x01;
	if (invert)
		data[0] ^= 0x01;
	ucontrol->value.integer.value[0] = data[0];
	return 0;
}

static int snd_ice1712_ews88d_control_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int shift = kcontrol->private_value & 0xff;
	int invert = (kcontrol->private_value >> 8) & 1;
	unsigned char data[2], ndata[2];
	int change;

	snd_i2c_lock(ice->i2c);
	if (snd_i2c_readbytes(ice->spec.i2cdevs[EWS_I2C_88D], data, 2) != 2) {
		snd_i2c_unlock(ice->i2c);
		return -EIO;
	}
	ndata[shift >> 3] = data[shift >> 3] & ~(1 << (shift & 7));
	if (invert) {
		if (! ucontrol->value.integer.value[0])
			ndata[shift >> 3] |= (1 << (shift & 7));
	} else {
		if (ucontrol->value.integer.value[0])
			ndata[shift >> 3] |= (1 << (shift & 7));
	}
	change = (data[shift >> 3] != ndata[shift >> 3]);
	if (change && snd_i2c_sendbytes(ice->spec.i2cdevs[EWS_I2C_88D], data, 2) != 2) {
		snd_i2c_unlock(ice->i2c);
		return -EIO;
	}
	snd_i2c_unlock(ice->i2c);
	return change;
}

#define EWS88D_CONTROL(xiface, xname, xshift, xinvert, xaccess) \
{ .iface = xiface,\
  .name = xname,\
  .access = xaccess,\
  .info = snd_ice1712_ews88d_control_info,\
  .get = snd_ice1712_ews88d_control_get,\
  .put = snd_ice1712_ews88d_control_put,\
  .private_value = xshift | (xinvert << 8),\
}

static struct snd_kcontrol_new snd_ice1712_ews88d_controls[] __devinitdata = {
	EWS88D_CONTROL(SNDRV_CTL_ELEM_IFACE_MIXER, "IEC958 Input Optical", 0, 1, 0), /* inverted */
	EWS88D_CONTROL(SNDRV_CTL_ELEM_IFACE_MIXER, "ADAT Output Optical", 1, 0, 0),
	EWS88D_CONTROL(SNDRV_CTL_ELEM_IFACE_MIXER, "ADAT External Master Clock", 2, 0, 0),
	EWS88D_CONTROL(SNDRV_CTL_ELEM_IFACE_MIXER, "Enable ADAT", 3, 0, 0),
	EWS88D_CONTROL(SNDRV_CTL_ELEM_IFACE_MIXER, "ADAT Through", 4, 1, 0),
};


/*
 * DMX 6Fire specific controls
 */

static int snd_ice1712_6fire_read_pca(struct snd_ice1712 *ice, unsigned char reg)
{
	unsigned char byte;
	snd_i2c_lock(ice->i2c);
	byte = reg;
	snd_i2c_sendbytes(ice->spec.i2cdevs[EWS_I2C_6FIRE], &byte, 1);
	byte = 0;
	if (snd_i2c_readbytes(ice->spec.i2cdevs[EWS_I2C_6FIRE], &byte, 1) != 1) {
		snd_i2c_unlock(ice->i2c);
		printk(KERN_ERR "cannot read pca\n");
		return -EIO;
	}
	snd_i2c_unlock(ice->i2c);
	return byte;
}

static int snd_ice1712_6fire_write_pca(struct snd_ice1712 *ice, unsigned char reg, unsigned char data)
{
	unsigned char bytes[2];
	snd_i2c_lock(ice->i2c);
	bytes[0] = reg;
	bytes[1] = data;
	if (snd_i2c_sendbytes(ice->spec.i2cdevs[EWS_I2C_6FIRE], bytes, 2) != 2) {
		snd_i2c_unlock(ice->i2c);
		return -EIO;
	}
	snd_i2c_unlock(ice->i2c);
	return 0;
}

static int snd_ice1712_6fire_control_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 1;
	return 0;
}

static int snd_ice1712_6fire_control_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int shift = kcontrol->private_value & 0xff;
	int invert = (kcontrol->private_value >> 8) & 1;
	int data;
	
	if ((data = snd_ice1712_6fire_read_pca(ice, PCF9554_REG_OUTPUT)) < 0)
		return data;
	data = (data >> shift) & 1;
	if (invert)
		data ^= 1;
	ucontrol->value.integer.value[0] = data;
	return 0;
}

static int snd_ice1712_6fire_control_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int shift = kcontrol->private_value & 0xff;
	int invert = (kcontrol->private_value >> 8) & 1;
	int data, ndata;
	
	if ((data = snd_ice1712_6fire_read_pca(ice, PCF9554_REG_OUTPUT)) < 0)
		return data;
	ndata = data & ~(1 << shift);
	if (ucontrol->value.integer.value[0])
		ndata |= (1 << shift);
	if (invert)
		ndata ^= (1 << shift);
	if (data != ndata) {
		snd_ice1712_6fire_write_pca(ice, PCF9554_REG_OUTPUT, (unsigned char)ndata);
		return 1;
	}
	return 0;
}

static int snd_ice1712_6fire_select_input_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	static char *texts[4] = {
		"Internal", "Front Input", "Rear Input", "Wave Table"
	};
	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 4;
	if (uinfo->value.enumerated.item >= 4)
		uinfo->value.enumerated.item = 1;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
	return 0;
}
     
static int snd_ice1712_6fire_select_input_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int data;
	
	if ((data = snd_ice1712_6fire_read_pca(ice, PCF9554_REG_OUTPUT)) < 0)
		return data;
	ucontrol->value.integer.value[0] = data & 3;
	return 0;
}

static int snd_ice1712_6fire_select_input_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
	int data, ndata;
	
	if ((data = snd_ice1712_6fire_read_pca(ice, PCF9554_REG_OUTPUT)) < 0)
		return data;
	ndata = data & ~3;
	ndata |= (ucontrol->value.integer.value[0] & 3);
	if (data != ndata) {
		snd_ice1712_6fire_write_pca(ice, PCF9554_REG_OUTPUT, (unsigned char)ndata);
		return 1;
	}
	return 0;
}


#define DMX6FIRE_CONTROL(xname, xshift, xinvert) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,\
  .name = xname,\
  .info = snd_ice1712_6fire_control_info,\
  .get = snd_ice1712_6fire_control_get,\
  .put = snd_ice1712_6fire_control_put,\
  .private_value = xshift | (xinvert << 8),\
}

static struct snd_kcontrol_new snd_ice1712_6fire_controls[] __devinitdata = {
	{
		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
		.name = "Analog Input Select",
		.info = snd_ice1712_6fire_select_input_info,
		.get = snd_ice1712_6fire_select_input_get,
		.put = snd_ice1712_6fire_select_input_put,
	},
	DMX6FIRE_CONTROL("Front Digital Input Switch", 2, 1),
	// DMX6FIRE_CONTROL("Master Clock Select", 3, 0),
	DMX6FIRE_CONTROL("Optical Digital Input Switch", 4, 0),
	DMX6FIRE_CONTROL("Phono Analog Input Switch", 5, 0),
	DMX6FIRE_CONTROL("Breakbox LED", 6, 0),
};


static int __devinit snd_ice1712_ews_add_controls(struct snd_ice1712 *ice)
{
	unsigned int idx;
	int err;
	
	/* all terratec cards have spdif, but cs8427 module builds it's own controls */
	if (ice->cs8427 == NULL) {
		err = snd_ice1712_spdif_build_controls(ice);
		if (err < 0)
			return err;
	}

	/* ak4524 controls */
	switch (ice->eeprom.subvendor) {
	case ICE1712_SUBDEVICE_EWX2496:
	case ICE1712_SUBDEVICE_EWS88MT:
	case ICE1712_SUBDEVICE_EWS88MT_NEW:
	case ICE1712_SUBDEVICE_PHASE88:
	case ICE1712_SUBDEVICE_DMX6FIRE:
		err = snd_ice1712_akm4xxx_build_controls(ice);
		if (err < 0)
			return err;
		break;
	}

	/* card specific controls */
	switch (ice->eeprom.subvendor) {
	case ICE1712_SUBDEVICE_EWX2496:
		for (idx = 0; idx < ARRAY_SIZE(snd_ice1712_ewx2496_controls); idx++) {
			err = snd_ctl_add(ice->card, snd_ctl_new1(&snd_ice1712_ewx2496_controls[idx], ice));
			if (err < 0)
				return err;
		}
		break;
	case ICE1712_SUBDEVICE_EWS88MT:
	case ICE1712_SUBDEVICE_EWS88MT_NEW:
	case ICE1712_SUBDEVICE_PHASE88:
		err = snd_ctl_add(ice->card, snd_ctl_new1(&snd_ice1712_ews88mt_input_sense, ice));
		if (err < 0)
			return err;
		err = snd_ctl_add(ice->card, snd_ctl_new1(&snd_ice1712_ews88mt_output_sense, ice));
		if (err < 0)
			return err;
		break;
	case ICE1712_SUBDEVICE_EWS88D:
		for (idx = 0; idx < ARRAY_SIZE(snd_ice1712_ews88d_controls); idx++) {
			err = snd_ctl_add(ice->card, snd_ctl_new1(&snd_ice1712_ews88d_controls[idx], ice));
			if (err < 0)
				return err;
		}
		break;
	case ICE1712_SUBDEVICE_DMX6FIRE:
		for (idx = 0; idx < ARRAY_SIZE(snd_ice1712_6fire_controls); idx++) {
			err = snd_ctl_add(ice->card, snd_ctl_new1(&snd_ice1712_6fire_controls[idx], ice));
			if (err < 0)
				return err;
		}
		break;
	}
	return 0;
}


/* entry point */
struct snd_ice1712_card_info snd_ice1712_ews_cards[] __devinitdata = {
	{
		.subvendor = ICE1712_SUBDEVICE_EWX2496,
		.name = "TerraTec EWX24/96",
		.model = "ewx2496",
		.chip_init = snd_ice1712_ews_init,
		.build_controls = snd_ice1712_ews_add_controls,
	},
	{
		.subvendor = ICE1712_SUBDEVICE_EWS88MT,
		.name = "TerraTec EWS88MT",
		.model = "ews88mt",
		.chip_init = snd_ice1712_ews_init,
		.build_controls = snd_ice1712_ews_add_controls,
	},
	{
		.subvendor = ICE1712_SUBDEVICE_EWS88MT_NEW,
		.name = "TerraTec EWS88MT",
		.model = "ews88mt_new",
		.chip_init = snd_ice1712_ews_init,
		.build_controls = snd_ice1712_ews_add_controls,
	},
	{
		.subvendor = ICE1712_SUBDEVICE_PHASE88,
		.name = "TerraTec Phase88",
		.model = "phase88",
		.chip_init = snd_ice1712_ews_init,
		.build_controls = snd_ice1712_ews_add_controls,
	},
	{
		.subvendor = ICE1712_SUBDEVICE_EWS88D,
		.name = "TerraTec EWS88D",
		.model = "ews88d",
		.chip_init = snd_ice1712_ews_init,
		.build_controls = snd_ice1712_ews_add_controls,
	},
	{
		.subvendor = ICE1712_SUBDEVICE_DMX6FIRE,
		.name = "TerraTec DMX6Fire",
		.model = "dmx6fire",
		.chip_init = snd_ice1712_ews_init,
		.build_controls = snd_ice1712_ews_add_controls,
	},
	{ } /* terminator */
};