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ASoC: pcm512x: Implement the digital_mute interface

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Clicks and pops of various volumes can be produced while the device is
opened, closed, put into and taken out of standby, or reconfigured.
Fix this, by implementing the digital_mute interface, so that the
output is muted during such operations.

Signed-off-by: Dimitris Papavasiliou <dpapavas@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Dimitris Papavasiliou 2018-11-24 22:05:42 +02:00 committed by Mark Brown
parent 165be3c260
commit 3500f1c589
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 121 additions and 2 deletions
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121
sound/soc/codecs/pcm512x.c
View File

@ -53,6 +53,8 @@ struct pcm512x_priv {
unsigned long overclock_pll;
unsigned long overclock_dac;
unsigned long overclock_dsp;
int mute;
struct mutex mutex;
};
/*
@ -384,6 +386,61 @@ static const struct soc_enum pcm512x_veds =
SOC_ENUM_SINGLE(PCM512x_DIGITAL_MUTE_2, PCM512x_VEDS_SHIFT, 4,
pcm512x_ramp_step_text);
static int pcm512x_update_mute(struct pcm512x_priv *pcm512x)
{
return regmap_update_bits(
pcm512x->regmap, PCM512x_MUTE, PCM512x_RQML | PCM512x_RQMR,
(!!(pcm512x->mute & 0x5) << PCM512x_RQML_SHIFT)
| (!!(pcm512x->mute & 0x3) << PCM512x_RQMR_SHIFT));
}
static int pcm512x_digital_playback_switch_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
mutex_lock(&pcm512x->mutex);
ucontrol->value.integer.value[0] = !(pcm512x->mute & 0x4);
ucontrol->value.integer.value[1] = !(pcm512x->mute & 0x2);
mutex_unlock(&pcm512x->mutex);
return 0;
}
static int pcm512x_digital_playback_switch_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
int ret, changed = 0;
mutex_lock(&pcm512x->mutex);
if ((pcm512x->mute & 0x4) == (ucontrol->value.integer.value[0] << 2)) {
pcm512x->mute ^= 0x4;
changed = 1;
}
if ((pcm512x->mute & 0x2) == (ucontrol->value.integer.value[1] << 1)) {
pcm512x->mute ^= 0x2;
changed = 1;
}
if (changed) {
ret = pcm512x_update_mute(pcm512x);
if (ret != 0) {
dev_err(component->dev,
"Failed to update digital mute: %d\n", ret);
mutex_unlock(&pcm512x->mutex);
return ret;
}
}
mutex_unlock(&pcm512x->mutex);
return changed;
}
static const struct snd_kcontrol_new pcm512x_controls[] = {
SOC_DOUBLE_R_TLV("Digital Playback Volume", PCM512x_DIGITAL_VOLUME_2,
PCM512x_DIGITAL_VOLUME_3, 0, 255, 1, digital_tlv),
@ -391,8 +448,15 @@ SOC_DOUBLE_TLV("Analogue Playback Volume", PCM512x_ANALOG_GAIN_CTRL,
PCM512x_LAGN_SHIFT, PCM512x_RAGN_SHIFT, 1, 1, analog_tlv),
SOC_DOUBLE_TLV("Analogue Playback Boost Volume", PCM512x_ANALOG_GAIN_BOOST,
PCM512x_AGBL_SHIFT, PCM512x_AGBR_SHIFT, 1, 0, boost_tlv),
SOC_DOUBLE("Digital Playback Switch", PCM512x_MUTE, PCM512x_RQML_SHIFT,
PCM512x_RQMR_SHIFT, 1, 1),
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Digital Playback Switch",
.index = 0,
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
.info = snd_ctl_boolean_stereo_info,
.get = pcm512x_digital_playback_switch_get,
.put = pcm512x_digital_playback_switch_put
},
SOC_SINGLE("Deemphasis Switch", PCM512x_DSP, PCM512x_DEMP_SHIFT, 1, 1),
SOC_ENUM("DSP Program", pcm512x_dsp_program),
@ -1319,10 +1383,61 @@ static int pcm512x_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
return 0;
}
static int pcm512x_digital_mute(struct snd_soc_dai *dai, int mute)
{
struct snd_soc_component *component = dai->component;
struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
int ret;
unsigned int mute_det;
mutex_lock(&pcm512x->mutex);
if (mute) {
pcm512x->mute |= 0x1;
ret = regmap_update_bits(pcm512x->regmap, PCM512x_MUTE,
PCM512x_RQML | PCM512x_RQMR,
PCM512x_RQML | PCM512x_RQMR);
if (ret != 0) {
dev_err(component->dev,
"Failed to set digital mute: %d\n", ret);
mutex_unlock(&pcm512x->mutex);
return ret;
}
regmap_read_poll_timeout(pcm512x->regmap,
PCM512x_ANALOG_MUTE_DET,
mute_det, (mute_det & 0x3) == 0,
200, 10000);
mutex_unlock(&pcm512x->mutex);
} else {
pcm512x->mute &= ~0x1;
ret = pcm512x_update_mute(pcm512x);
if (ret != 0) {
dev_err(component->dev,
"Failed to update digital mute: %d\n", ret);
mutex_unlock(&pcm512x->mutex);
return ret;
}
regmap_read_poll_timeout(pcm512x->regmap,
PCM512x_ANALOG_MUTE_DET,
mute_det,
(mute_det & 0x3)
== ((~pcm512x->mute >> 1) & 0x3),
200, 10000);
}
mutex_unlock(&pcm512x->mutex);
return 0;
}
static const struct snd_soc_dai_ops pcm512x_dai_ops = {
.startup = pcm512x_dai_startup,
.hw_params = pcm512x_hw_params,
.set_fmt = pcm512x_set_fmt,
.digital_mute = pcm512x_digital_mute,
};
static struct snd_soc_dai_driver pcm512x_dai = {
@ -1388,6 +1503,8 @@ int pcm512x_probe(struct device *dev, struct regmap *regmap)
if (!pcm512x)
return -ENOMEM;
mutex_init(&pcm512x->mutex);
dev_set_drvdata(dev, pcm512x);
pcm512x->regmap = regmap;

2
sound/soc/codecs/pcm512x.h
View File

@ -112,7 +112,9 @@
#define PCM512x_RQST_SHIFT 4
/* Page 0, Register 3 - mute */
#define PCM512x_RQMR (1 << 0)
#define PCM512x_RQMR_SHIFT 0
#define PCM512x_RQML (1 << 4)
#define PCM512x_RQML_SHIFT 4
/* Page 0, Register 4 - PLL */