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Diffstat (limited to 'sound/soc/codecs/tas5805m.c')
-rw-r--r--sound/soc/codecs/tas5805m.c131
1 files changed, 90 insertions, 41 deletions
diff --git a/sound/soc/codecs/tas5805m.c b/sound/soc/codecs/tas5805m.c
index beb4ec629a03..4e38eb7acea1 100644
--- a/sound/soc/codecs/tas5805m.c
+++ b/sound/soc/codecs/tas5805m.c
@@ -154,6 +154,7 @@ static const uint32_t tas5805m_volume[] = {
#define TAS5805M_VOLUME_MIN 0
struct tas5805m_priv {
+ struct i2c_client *i2c;
struct regulator *pvdd;
struct gpio_desc *gpio_pdn_n;
@@ -165,6 +166,9 @@ struct tas5805m_priv {
int vol[2];
bool is_powered;
bool is_muted;
+
+ struct work_struct work;
+ struct mutex lock;
};
static void set_dsp_scale(struct regmap *rm, int offset, int vol)
@@ -181,13 +185,11 @@ static void set_dsp_scale(struct regmap *rm, int offset, int vol)
regmap_bulk_write(rm, offset, v, ARRAY_SIZE(v));
}
-static void tas5805m_refresh(struct snd_soc_component *component)
+static void tas5805m_refresh(struct tas5805m_priv *tas5805m)
{
- struct tas5805m_priv *tas5805m =
- snd_soc_component_get_drvdata(component);
struct regmap *rm = tas5805m->regmap;
- dev_dbg(component->dev, "refresh: is_muted=%d, vol=%d/%d\n",
+ dev_dbg(&tas5805m->i2c->dev, "refresh: is_muted=%d, vol=%d/%d\n",
tas5805m->is_muted, tas5805m->vol[0], tas5805m->vol[1]);
regmap_write(rm, REG_PAGE, 0x00);
@@ -201,6 +203,9 @@ static void tas5805m_refresh(struct snd_soc_component *component)
set_dsp_scale(rm, 0x24, tas5805m->vol[0]);
set_dsp_scale(rm, 0x28, tas5805m->vol[1]);
+ regmap_write(rm, REG_PAGE, 0x00);
+ regmap_write(rm, REG_BOOK, 0x00);
+
/* Set/clear digital soft-mute */
regmap_write(rm, REG_DEVICE_CTRL_2,
(tas5805m->is_muted ? DCTRL2_MUTE : 0) |
@@ -226,8 +231,11 @@ static int tas5805m_vol_get(struct snd_kcontrol *kcontrol,
struct tas5805m_priv *tas5805m =
snd_soc_component_get_drvdata(component);
+ mutex_lock(&tas5805m->lock);
ucontrol->value.integer.value[0] = tas5805m->vol[0];
ucontrol->value.integer.value[1] = tas5805m->vol[1];
+ mutex_unlock(&tas5805m->lock);
+
return 0;
}
@@ -243,11 +251,13 @@ static int tas5805m_vol_put(struct snd_kcontrol *kcontrol,
snd_soc_kcontrol_component(kcontrol);
struct tas5805m_priv *tas5805m =
snd_soc_component_get_drvdata(component);
+ int ret = 0;
if (!(volume_is_valid(ucontrol->value.integer.value[0]) &&
volume_is_valid(ucontrol->value.integer.value[1])))
return -EINVAL;
+ mutex_lock(&tas5805m->lock);
if (tas5805m->vol[0] != ucontrol->value.integer.value[0] ||
tas5805m->vol[1] != ucontrol->value.integer.value[1]) {
tas5805m->vol[0] = ucontrol->value.integer.value[0];
@@ -256,11 +266,12 @@ static int tas5805m_vol_put(struct snd_kcontrol *kcontrol,
tas5805m->vol[0], tas5805m->vol[1],
tas5805m->is_powered);
if (tas5805m->is_powered)
- tas5805m_refresh(component);
- return 1;
+ tas5805m_refresh(tas5805m);
+ ret = 1;
}
+ mutex_unlock(&tas5805m->lock);
- return 0;
+ return ret;
}
static const struct snd_kcontrol_new tas5805m_snd_controls[] = {
@@ -294,54 +305,83 @@ static int tas5805m_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_component *component = dai->component;
struct tas5805m_priv *tas5805m =
snd_soc_component_get_drvdata(component);
- struct regmap *rm = tas5805m->regmap;
- unsigned int chan, global1, global2;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
- dev_dbg(component->dev, "DSP startup\n");
-
- /* We mustn't issue any I2C transactions until the I2S
- * clock is stable. Furthermore, we must allow a 5ms
- * delay after the first set of register writes to
- * allow the DSP to boot before configuring it.
- */
- usleep_range(5000, 10000);
- send_cfg(rm, dsp_cfg_preboot,
- ARRAY_SIZE(dsp_cfg_preboot));
- usleep_range(5000, 15000);
- send_cfg(rm, tas5805m->dsp_cfg_data,
- tas5805m->dsp_cfg_len);
-
- tas5805m->is_powered = true;
- tas5805m_refresh(component);
+ dev_dbg(component->dev, "clock start\n");
+ schedule_work(&tas5805m->work);
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
- dev_dbg(component->dev, "DSP shutdown\n");
+ break;
- tas5805m->is_powered = false;
+ default:
+ return -EINVAL;
+ }
- regmap_write(rm, REG_PAGE, 0x00);
- regmap_write(rm, REG_BOOK, 0x00);
+ return 0;
+}
- regmap_read(rm, REG_CHAN_FAULT, &chan);
- regmap_read(rm, REG_GLOBAL_FAULT1, &global1);
- regmap_read(rm, REG_GLOBAL_FAULT2, &global2);
+static void do_work(struct work_struct *work)
+{
+ struct tas5805m_priv *tas5805m =
+ container_of(work, struct tas5805m_priv, work);
+ struct regmap *rm = tas5805m->regmap;
- dev_dbg(component->dev,
- "fault regs: CHAN=%02x, GLOBAL1=%02x, GLOBAL2=%02x\n",
- chan, global1, global2);
+ dev_dbg(&tas5805m->i2c->dev, "DSP startup\n");
- regmap_write(rm, REG_DEVICE_CTRL_2, DCTRL2_MODE_HIZ);
- break;
+ mutex_lock(&tas5805m->lock);
+ /* We mustn't issue any I2C transactions until the I2S
+ * clock is stable. Furthermore, we must allow a 5ms
+ * delay after the first set of register writes to
+ * allow the DSP to boot before configuring it.
+ */
+ usleep_range(5000, 10000);
+ send_cfg(rm, dsp_cfg_preboot, ARRAY_SIZE(dsp_cfg_preboot));
+ usleep_range(5000, 15000);
+ send_cfg(rm, tas5805m->dsp_cfg_data, tas5805m->dsp_cfg_len);
+
+ tas5805m->is_powered = true;
+ tas5805m_refresh(tas5805m);
+ mutex_unlock(&tas5805m->lock);
+}
- default:
- return -EINVAL;
+static int tas5805m_dac_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
+ struct tas5805m_priv *tas5805m =
+ snd_soc_component_get_drvdata(component);
+ struct regmap *rm = tas5805m->regmap;
+
+ if (event & SND_SOC_DAPM_PRE_PMD) {
+ unsigned int chan, global1, global2;
+
+ dev_dbg(component->dev, "DSP shutdown\n");
+ cancel_work_sync(&tas5805m->work);
+
+ mutex_lock(&tas5805m->lock);
+ if (tas5805m->is_powered) {
+ tas5805m->is_powered = false;
+
+ regmap_write(rm, REG_PAGE, 0x00);
+ regmap_write(rm, REG_BOOK, 0x00);
+
+ regmap_read(rm, REG_CHAN_FAULT, &chan);
+ regmap_read(rm, REG_GLOBAL_FAULT1, &global1);
+ regmap_read(rm, REG_GLOBAL_FAULT2, &global2);
+
+ dev_dbg(component->dev, "fault regs: CHAN=%02x, "
+ "GLOBAL1=%02x, GLOBAL2=%02x\n",
+ chan, global1, global2);
+
+ regmap_write(rm, REG_DEVICE_CTRL_2, DCTRL2_MODE_HIZ);
+ }
+ mutex_unlock(&tas5805m->lock);
}
return 0;
@@ -354,7 +394,8 @@ static const struct snd_soc_dapm_route tas5805m_audio_map[] = {
static const struct snd_soc_dapm_widget tas5805m_dapm_widgets[] = {
SND_SOC_DAPM_AIF_IN("DAC IN", "Playback", 0, SND_SOC_NOPM, 0, 0),
- SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0,
+ tas5805m_dac_event, SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_OUTPUT("OUT")
};
@@ -375,11 +416,14 @@ static int tas5805m_mute(struct snd_soc_dai *dai, int mute, int direction)
struct tas5805m_priv *tas5805m =
snd_soc_component_get_drvdata(component);
+ mutex_lock(&tas5805m->lock);
dev_dbg(component->dev, "set mute=%d (is_powered=%d)\n",
mute, tas5805m->is_powered);
+
tas5805m->is_muted = mute;
if (tas5805m->is_powered)
- tas5805m_refresh(component);
+ tas5805m_refresh(tas5805m);
+ mutex_unlock(&tas5805m->lock);
return 0;
}
@@ -434,6 +478,7 @@ static int tas5805m_i2c_probe(struct i2c_client *i2c)
if (!tas5805m)
return -ENOMEM;
+ tas5805m->i2c = i2c;
tas5805m->pvdd = devm_regulator_get(dev, "pvdd");
if (IS_ERR(tas5805m->pvdd)) {
dev_err(dev, "failed to get pvdd supply: %ld\n",
@@ -507,6 +552,9 @@ static int tas5805m_i2c_probe(struct i2c_client *i2c)
gpiod_set_value(tas5805m->gpio_pdn_n, 1);
usleep_range(10000, 15000);
+ INIT_WORK(&tas5805m->work, do_work);
+ mutex_init(&tas5805m->lock);
+
/* Don't register through devm. We need to be able to unregister
* the component prior to deasserting PDN#
*/
@@ -527,6 +575,7 @@ static void tas5805m_i2c_remove(struct i2c_client *i2c)
struct device *dev = &i2c->dev;
struct tas5805m_priv *tas5805m = dev_get_drvdata(dev);
+ cancel_work_sync(&tas5805m->work);
snd_soc_unregister_component(dev);
gpiod_set_value(tas5805m->gpio_pdn_n, 0);
usleep_range(10000, 15000);
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-22 11:57:38 +0300