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ASoC: rt711-sdca: add the notification when volume changed

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This patch adds the return value when the volume settings were changed.
The userspace application might monitor the kcontrols to check which control changed.

Signed-off-by: Shuming Fan <shumingf@realtek.com>
Link: https://lore.kernel.org/r/20210422103235.22048-1-shumingf@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Shuming Fan
2021-04-22 18:32:35 +08:00
committed by Mark Brown
parent ca5118c0c0
commit a1aee7f7b7
1 changed files with 11 additions and 2 deletions
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13
sound/soc/codecs/rt711-sdca.c
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@@ -509,12 +509,16 @@ static int rt711_sdca_set_gain_put(struct snd_kcontrol *kcontrol,
(struct soc_mixer_control *)kcontrol->private_value;
struct rt711_sdca_priv *rt711 = snd_soc_component_get_drvdata(component);
unsigned int read_l, read_r, gain_l_val, gain_r_val;
unsigned int i, adc_vol_flag = 0;
unsigned int i, adc_vol_flag = 0, changed = 0;
unsigned int lvalue, rvalue;
if (strstr(ucontrol->id.name, "FU1E Capture Volume") ||
strstr(ucontrol->id.name, "FU0F Capture Volume"))
adc_vol_flag = 1;
regmap_read(rt711->mbq_regmap, mc->reg, &lvalue);
regmap_read(rt711->mbq_regmap, mc->rreg, &rvalue);
/* control value to 2's complement value */
/* L Channel */
gain_l_val = ucontrol->value.integer.value[0];
@@ -560,6 +564,11 @@ static int rt711_sdca_set_gain_put(struct snd_kcontrol *kcontrol,
gain_r_val &= 0xffff;
}
if (lvalue != gain_l_val || rvalue != gain_r_val)
changed = 1;
else
return 0;
for (i = 0; i < 3; i++) { /* retry 3 times at most */
/* Lch*/
regmap_write(rt711->mbq_regmap, mc->reg, gain_l_val);
@@ -573,7 +582,7 @@ static int rt711_sdca_set_gain_put(struct snd_kcontrol *kcontrol,
break;
}
return i == 3 ? -EIO : 0;
return i == 3 ? -EIO : changed;
}
static int rt711_sdca_set_gain_get(struct snd_kcontrol *kcontrol,