static int adau17x1_dsp_mux_enum_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
struct adau *adau = snd_soc_codec_get_drvdata(codec);
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
unsigned int stream = e->shift_l;
unsigned int reg, val;
int ret;
if (stream == SNDRV_PCM_STREAM_PLAYBACK)
reg = ADAU17X1_SERIAL_INPUT_ROUTE;
else
reg = ADAU17X1_SERIAL_OUTPUT_ROUTE;
ret = regmap_read(adau->regmap, reg, &val);
if (ret)
return ret;
if (val != 0)
val = 1;
ucontrol->value.enumerated.item[0] = val;
return 0;
}
static int txsrc_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
unsigned int val = ucontrol->value.enumerated.item[0] << e->shift_l;
unsigned int mask = 1 << e->shift_l;
unsigned int txpwr;
if (val != 0 && val != mask)
return -EINVAL;
snd_soc_dapm_mutex_lock(dapm);
if (snd_soc_test_bits(codec, e->reg, mask, val)) {
/* save the current power state of the transmitter */
txpwr = snd_soc_read(codec, WM8804_PWRDN) & 0x4;
/* power down the transmitter */
snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x4);
/* set the tx source */
snd_soc_update_bits(codec, e->reg, mask, val);
/* restore the transmitter's configuration */
snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, txpwr);
}
snd_soc_dapm_mutex_unlock(dapm);
return 0;
}
/*
* The MUX register for the Capture and Playback MUXs selects either DSP as
* source/destination or one of the TDM slots. The TDM slot is selected via
* snd_soc_dai_set_tdm_slot(), so we only expose whether to go to the DSP or
* directly to the DAI interface with this control.
*/
static int adau17x1_dsp_mux_enum_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
struct adau *adau = snd_soc_codec_get_drvdata(codec);
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
struct snd_soc_dapm_update update;
unsigned int stream = e->shift_l;
unsigned int val, change;
int reg;
if (ucontrol->value.enumerated.item[0] >= e->items)
return -EINVAL;
switch (ucontrol->value.enumerated.item[0]) {
case 0:
val = 0;
adau->dsp_bypass[stream] = false;
break;
default:
val = (adau->tdm_slot[stream] * 2) + 1;
adau->dsp_bypass[stream] = true;
break;
}
if (stream == SNDRV_PCM_STREAM_PLAYBACK)
reg = ADAU17X1_SERIAL_INPUT_ROUTE;
else
reg = ADAU17X1_SERIAL_OUTPUT_ROUTE;
change = snd_soc_test_bits(codec, reg, 0xff, val);
if (change) {
update.kcontrol = kcontrol;
update.mask = 0xff;
update.reg = reg;
update.val = val;
snd_soc_dapm_mux_update_power(dapm, kcontrol,
ucontrol->value.enumerated.item[0], e, &update);
}
return change;
}
