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ASoC: max98373: change power down sequence for smart amp

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In order to avoid pop noise which occurs when switching
device from speaker to headphone, the amplifier should
power down first when stopping playback.

Signed-off-by: Long Wang <long.wang@analog.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Link: https://lore.kernel.org/r/20230406154535.18205-1-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Long Wang 2023-04-06 10:45:35 -05:00 committed by Mark Brown
parent 0b186bb061
commit 352e1eb17e
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
1 changed files with 2 additions and 2 deletions
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4
sound/soc/codecs/max98373.c
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@ -31,7 +31,7 @@ static int max98373_dac_event(struct snd_soc_dapm_widget *w,
MAX98373_GLOBAL_EN_MASK, 1);
usleep_range(30000, 31000);
break;
case SND_SOC_DAPM_POST_PMD:
case SND_SOC_DAPM_PRE_PMD:
regmap_update_bits(max98373->regmap,
MAX98373_R20FF_GLOBAL_SHDN,
MAX98373_GLOBAL_EN_MASK, 0);
@ -64,7 +64,7 @@ static const struct snd_kcontrol_new max98373_spkfb_control =
static const struct snd_soc_dapm_widget max98373_dapm_widgets[] = {
SND_SOC_DAPM_DAC_E("Amp Enable", "HiFi Playback",
MAX98373_R202B_PCM_RX_EN, 0, 0, max98373_dac_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_MUX("DAI Sel Mux", SND_SOC_NOPM, 0, 0,
&max98373_dai_controls),
SND_SOC_DAPM_OUTPUT("BE_OUT"),