ak4xxx-adda.c

linux 内核源代码

		"44.1kHz", "Off", "48kHz", "32kHz",
	};
	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 = 3;
	strcpy(uinfo->value.enumerated.name,
	       texts[uinfo->value.enumerated.item]);
	return 0;
}

static int snd_akm4xxx_deemphasis_get(struct snd_kcontrol *kcontrol,
				      struct snd_ctl_elem_value *ucontrol)
{
	struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol);
	int chip = AK_GET_CHIP(kcontrol->private_value);
	int addr = AK_GET_ADDR(kcontrol->private_value);
	int shift = AK_GET_SHIFT(kcontrol->private_value);
	ucontrol->value.enumerated.item[0] =
		(snd_akm4xxx_get(ak, chip, addr) >> shift) & 3;
	return 0;
}

static int snd_akm4xxx_deemphasis_put(struct snd_kcontrol *kcontrol,
				      struct snd_ctl_elem_value *ucontrol)
{
	struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol);
	int chip = AK_GET_CHIP(kcontrol->private_value);
	int addr = AK_GET_ADDR(kcontrol->private_value);
	int shift = AK_GET_SHIFT(kcontrol->private_value);
	unsigned char nval = ucontrol->value.enumerated.item[0] & 3;
	int change;
	
	nval = (nval << shift) |
		(snd_akm4xxx_get(ak, chip, addr) & ~(3 << shift));
	change = snd_akm4xxx_get(ak, chip, addr) != nval;
	if (change)
		snd_akm4xxx_write(ak, chip, addr, nval);
	return change;
}

#define ak4xxx_switch_info	snd_ctl_boolean_mono_info

static int ak4xxx_switch_get(struct snd_kcontrol *kcontrol,
			     struct snd_ctl_elem_value *ucontrol)
{
	struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol);
	int chip = AK_GET_CHIP(kcontrol->private_value);
	int addr = AK_GET_ADDR(kcontrol->private_value);
	int shift = AK_GET_SHIFT(kcontrol->private_value);
	int invert = AK_GET_INVERT(kcontrol->private_value);
	/* we observe the (1<<shift) bit only */
	unsigned char val = snd_akm4xxx_get(ak, chip, addr) & (1<<shift);
	if (invert)
		val = ! val;
	ucontrol->value.integer.value[0] = (val & (1<<shift)) != 0;
	return 0;
}

static int ak4xxx_switch_put(struct snd_kcontrol *kcontrol,
			     struct snd_ctl_elem_value *ucontrol)
{
	struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol);
	int chip = AK_GET_CHIP(kcontrol->private_value);
	int addr = AK_GET_ADDR(kcontrol->private_value);
	int shift = AK_GET_SHIFT(kcontrol->private_value);
	int invert = AK_GET_INVERT(kcontrol->private_value);
	long flag = ucontrol->value.integer.value[0];
	unsigned char val, oval;
	int change;

	if (invert)
		flag = ! flag;
	oval = snd_akm4xxx_get(ak, chip, addr);
	if (flag)
		val = oval | (1<<shift);
	else
		val = oval & ~(1<<shift);
	change = (oval != val);
	if (change)
		snd_akm4xxx_write(ak, chip, addr, val);
	return change;
}

#define AK5365_NUM_INPUTS 5

static int ak4xxx_capture_source_info(struct snd_kcontrol *kcontrol,
				      struct snd_ctl_elem_info *uinfo)
{
	struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol);
	int mixer_ch = AK_GET_SHIFT(kcontrol->private_value);
	const char **input_names;
	int  num_names, idx;

	input_names = ak->adc_info[mixer_ch].input_names;

	num_names = 0;
	while (num_names < AK5365_NUM_INPUTS && input_names[num_names])
		++num_names;
	
	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = num_names;
	idx = uinfo->value.enumerated.item;
	if (idx >= num_names)
		return -EINVAL;
	strncpy(uinfo->value.enumerated.name, input_names[idx],
		sizeof(uinfo->value.enumerated.name));
	return 0;
}

static int ak4xxx_capture_source_get(struct snd_kcontrol *kcontrol,
				     struct snd_ctl_elem_value *ucontrol)
{
	struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol);
	int chip = AK_GET_CHIP(kcontrol->private_value);
	int addr = AK_GET_ADDR(kcontrol->private_value);
	int mask = AK_GET_MASK(kcontrol->private_value);
	unsigned char val;

	val = snd_akm4xxx_get(ak, chip, addr) & mask;
	ucontrol->value.enumerated.item[0] = val;
	return 0;
}

static int ak4xxx_capture_source_put(struct snd_kcontrol *kcontrol,
				     struct snd_ctl_elem_value *ucontrol)
{
	struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol);
	int chip = AK_GET_CHIP(kcontrol->private_value);
	int addr = AK_GET_ADDR(kcontrol->private_value);
	int mask = AK_GET_MASK(kcontrol->private_value);
	unsigned char oval, val;

	oval = snd_akm4xxx_get(ak, chip, addr);
	val = oval & ~mask;
	val |= ucontrol->value.enumerated.item[0] & mask;
	if (val != oval) {
		snd_akm4xxx_write(ak, chip, addr, val);
		return 1;
	}
	return 0;
}

/*
 * build AK4xxx controls
 */

static int build_dac_controls(struct snd_akm4xxx *ak)
{
	int idx, err, mixer_ch, num_stereo;
	struct snd_kcontrol_new knew;

	mixer_ch = 0;
	for (idx = 0; idx < ak->num_dacs; ) {
		/* mute control for Revolution 7.1 - AK4381 */
		if (ak->type == SND_AK4381 
				&&  ak->dac_info[mixer_ch].switch_name) {
			memset(&knew, 0, sizeof(knew));
			knew.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
			knew.count = 1;
			knew.access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
			knew.name = ak->dac_info[mixer_ch].switch_name;
			knew.info = ak4xxx_switch_info;
			knew.get = ak4xxx_switch_get;
			knew.put = ak4xxx_switch_put;
			knew.access = 0;
			/* register 1, bit 0 (SMUTE): 0 = normal operation,
			   1 = mute */
			knew.private_value =
				AK_COMPOSE(idx/2, 1, 0, 0) | AK_INVERT;
			err = snd_ctl_add(ak->card, snd_ctl_new1(&knew, ak));
			if (err < 0)
				return err;
		}
		memset(&knew, 0, sizeof(knew));
		if (! ak->dac_info || ! ak->dac_info[mixer_ch].name) {
			knew.name = "DAC Volume";
			knew.index = mixer_ch + ak->idx_offset * 2;
			num_stereo = 1;
		} else {
			knew.name = ak->dac_info[mixer_ch].name;
			num_stereo = ak->dac_info[mixer_ch].num_channels;
		}
		knew.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
		knew.count = 1;
		knew.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
			SNDRV_CTL_ELEM_ACCESS_TLV_READ;
		if (num_stereo == 2) {
			knew.info = snd_akm4xxx_stereo_volume_info;
			knew.get = snd_akm4xxx_stereo_volume_get;
			knew.put = snd_akm4xxx_stereo_volume_put;
		} else {
			knew.info = snd_akm4xxx_volume_info;
			knew.get = snd_akm4xxx_volume_get;
			knew.put = snd_akm4xxx_volume_put;
		}
		switch (ak->type) {
		case SND_AK4524:
			/* register 6 & 7 */
			knew.private_value =
				AK_COMPOSE(idx/2, (idx%2) + 6, 0, 127) |
				AK_VOL_CVT;
			knew.tlv.p = db_scale_vol_datt;
			break;
		case SND_AK4528:
			/* register 4 & 5 */
			knew.private_value =
				AK_COMPOSE(idx/2, (idx%2) + 4, 0, 127) |
				AK_VOL_CVT;
			knew.tlv.p = db_scale_vol_datt;
			break;
		case SND_AK4529: {
			/* registers 2-7 and b,c */
			int val = idx < 6 ? idx + 2 : (idx - 6) + 0xb;
			knew.private_value =
				AK_COMPOSE(0, val, 0, 255) | AK_INVERT;
			knew.tlv.p = db_scale_8bit;
			break;
		}
		case SND_AK4355:
			/* register 4-9, chip #0 only */
			knew.private_value = AK_COMPOSE(0, idx + 4, 0, 255);
			knew.tlv.p = db_scale_8bit;
			break;
		case SND_AK4358: {
			/* register 4-9 and 11-12, chip #0 only */
			int  addr = idx < 6 ? idx + 4 : idx + 5;
			knew.private_value =
				AK_COMPOSE(0, addr, 0, 127) | AK_NEEDSMSB;
			knew.tlv.p = db_scale_7bit;
			break;
		}
		case SND_AK4381:
			/* register 3 & 4 */
			knew.private_value =
				AK_COMPOSE(idx/2, (idx%2) + 3, 0, 255);
			knew.tlv.p = db_scale_linear;
			break;
		default:
			return -EINVAL;
		}

		err = snd_ctl_add(ak->card, snd_ctl_new1(&knew, ak));
		if (err < 0)
			return err;

		idx += num_stereo;
		mixer_ch++;
	}
	return 0;
}

static int build_adc_controls(struct snd_akm4xxx *ak)
{
	int idx, err, mixer_ch, num_stereo;
	struct snd_kcontrol_new knew;

	mixer_ch = 0;
	for (idx = 0; idx < ak->num_adcs;) {
		memset(&knew, 0, sizeof(knew));
		if (! ak->adc_info || ! ak->adc_info[mixer_ch].name) {
			knew.name = "ADC Volume";
			knew.index = mixer_ch + ak->idx_offset * 2;
			num_stereo = 1;
		} else {
			knew.name = ak->adc_info[mixer_ch].name;
			num_stereo = ak->adc_info[mixer_ch].num_channels;
		}
		knew.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
		knew.count = 1;
		knew.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
			SNDRV_CTL_ELEM_ACCESS_TLV_READ;
		if (num_stereo == 2) {
			knew.info = snd_akm4xxx_stereo_volume_info;
			knew.get = snd_akm4xxx_stereo_volume_get;
			knew.put = snd_akm4xxx_stereo_volume_put;
		} else {
			knew.info = snd_akm4xxx_volume_info;
			knew.get = snd_akm4xxx_volume_get;
			knew.put = snd_akm4xxx_volume_put;
		}
		/* register 4 & 5 */
		if (ak->type == SND_AK5365)
			knew.private_value =
				AK_COMPOSE(idx/2, (idx%2) + 4, 0, 151) |
				AK_VOL_CVT | AK_IPGA;
		else
			knew.private_value =
				AK_COMPOSE(idx/2, (idx%2) + 4, 0, 163) |
				AK_VOL_CVT | AK_IPGA;
		knew.tlv.p = db_scale_vol_datt;
		err = snd_ctl_add(ak->card, snd_ctl_new1(&knew, ak));
		if (err < 0)
			return err;

		if (ak->type == SND_AK5365 && (idx % 2) == 0) {
			if (! ak->adc_info || 
			    ! ak->adc_info[mixer_ch].switch_name) {
				knew.name = "Capture Switch";
				knew.index = mixer_ch + ak->idx_offset * 2;
			} else
				knew.name = ak->adc_info[mixer_ch].switch_name;
			knew.info = ak4xxx_switch_info;
			knew.get = ak4xxx_switch_get;
			knew.put = ak4xxx_switch_put;
			knew.access = 0;
			/* register 2, bit 0 (SMUTE): 0 = normal operation,
			   1 = mute */
			knew.private_value =
				AK_COMPOSE(idx/2, 2, 0, 0) | AK_INVERT;
			err = snd_ctl_add(ak->card, snd_ctl_new1(&knew, ak));
			if (err < 0)
				return err;

			memset(&knew, 0, sizeof(knew));
			knew.name = ak->adc_info[mixer_ch].selector_name;
			if (!knew.name) {
				knew.name = "Capture Channel";
				knew.index = mixer_ch + ak->idx_offset * 2;
			}

			knew.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
			knew.info = ak4xxx_capture_source_info;
			knew.get = ak4xxx_capture_source_get;
			knew.put = ak4xxx_capture_source_put;
			knew.access = 0;
			/* input selector control: reg. 1, bits 0-2.
			 * mis-use 'shift' to pass mixer_ch */
			knew.private_value
				= AK_COMPOSE(idx/2, 1, mixer_ch, 0x07);
			err = snd_ctl_add(ak->card, snd_ctl_new1(&knew, ak));
			if (err < 0)
				return err;
		}

		idx += num_stereo;
		mixer_ch++;
	}
	return 0;
}

static int build_deemphasis(struct snd_akm4xxx *ak, int num_emphs)
{
	int idx, err;
	struct snd_kcontrol_new knew;

	for (idx = 0; idx < num_emphs; idx++) {
		memset(&knew, 0, sizeof(knew));
		knew.name = "Deemphasis";
		knew.index = idx + ak->idx_offset;
		knew.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
		knew.count = 1;
		knew.info = snd_akm4xxx_deemphasis_info;
		knew.get = snd_akm4xxx_deemphasis_get;
		knew.put = snd_akm4xxx_deemphasis_put;
		switch (ak->type) {
		case SND_AK4524:
		case SND_AK4528:
			/* register 3 */
			knew.private_value = AK_COMPOSE(idx, 3, 0, 0);
			break;
		case SND_AK4529: {
			int shift = idx == 3 ? 6 : (2 - idx) * 2;
			/* register 8 with shift */
			knew.private_value = AK_COMPOSE(0, 8, shift, 0);
			break;
		}
		case SND_AK4355:
		case SND_AK4358:
			knew.private_value = AK_COMPOSE(idx, 3, 0, 0);
			break;
		case SND_AK4381:
			knew.private_value = AK_COMPOSE(idx, 1, 1, 0);
			break;
		default:
			return -EINVAL;
		}
		err = snd_ctl_add(ak->card, snd_ctl_new1(&knew, ak));
		if (err < 0)
			return err;
	}
	return 0;
}

int snd_akm4xxx_build_controls(struct snd_akm4xxx *ak)
{
	int err, num_emphs;

	err = build_dac_controls(ak);
	if (err < 0)
		return err;

	err = build_adc_controls(ak);
	if (err < 0)
		return err;

	if (ak->type == SND_AK4355 || ak->type == SND_AK4358)
		num_emphs = 1;
	else
		num_emphs = ak->num_dacs / 2;
	err = build_deemphasis(ak, num_emphs);
	if (err < 0)
		return err;

	return 0;
}
	
EXPORT_SYMBOL(snd_akm4xxx_build_controls);

static int __init alsa_akm4xxx_module_init(void)
{
	return 0;
}
        
static void __exit alsa_akm4xxx_module_exit(void)
{
}
        
module_init(alsa_akm4xxx_module_init)
module_exit(alsa_akm4xxx_module_exit)