The following error occurs when trying to restore a previously saved ALSA mixer state (tested on a Rock 5B board):
$ alsactl --no-ucm -f /tmp/asound.state store hw:Analog $ alsactl --no-ucm -I -f /tmp/asound.state restore hw:Analog alsactl: set_control:1475: Cannot write control '2:0:0:ALC Capture Target Volume:0' : Invalid argument
According to ES8316 datasheet, the register at address 0x2B, which is related to the above mixer control, contains by default the value 0xB0. Considering the corresponding ALC target bits are 7:4, the control is initialized with 0xB, which is one step above the maximum value 0xA allowed by the driver.
This means that either the hardware default is wrongly set to 0xB instead of 0xA, or the specs are incorrect and instead of having the range 0xA-0xF mapped to -1.5 dB, the single value 0xA should have been mapped to -1.5 dB and the remaining range 0xB-0xF to 0 dB.
Increment the max value allowed for ALC Capture Target Volume control, so that it matches the hardware default.
Fixes: b8b88b70875a ("ASoC: add es8316 codec driver") Signed-off-by: Cristian Ciocaltea cristian.ciocaltea@collabora.com --- sound/soc/codecs/es8316.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/soc/codecs/es8316.c b/sound/soc/codecs/es8316.c index 9e033fb320a0..773c94fd3547 100644 --- a/sound/soc/codecs/es8316.c +++ b/sound/soc/codecs/es8316.c @@ -115,7 +115,7 @@ static const struct snd_kcontrol_new es8316_snd_controls[] = { alc_max_gain_tlv), SOC_SINGLE_TLV("ALC Capture Min Volume", ES8316_ADC_ALC2, 0, 28, 0, alc_min_gain_tlv), - SOC_SINGLE_TLV("ALC Capture Target Volume", ES8316_ADC_ALC3, 4, 10, 0, + SOC_SINGLE_TLV("ALC Capture Target Volume", ES8316_ADC_ALC3, 4, 11, 0, alc_target_tlv), SOC_SINGLE("ALC Capture Hold Time", ES8316_ADC_ALC3, 0, 10, 0), SOC_SINGLE("ALC Capture Decay Time", ES8316_ADC_ALC4, 4, 10, 0),