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ASoC: sun50i-codec-analog: Gate the amplifier clock during suspend
The clock must be running for the zero-crossing mute functionality. However, it must be gated for VDD-SYS to be turned off during system suspend. Disable it in the suspend callback, after everything has already been muted, to avoid pops when muting/unmuting outputs. Signed-off-by: Samuel Holland <samuel@sholland.org> Acked-by: Chen-Yu Tsai <wens@csie.org> Link: https://lore.kernel.org/r/20200726025334.59931-3-samuel@sholland.org Signed-off-by: Mark Brown <broonie@kernel.org>
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1 changed files with 15 additions and 0 deletions
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@ -438,6 +438,19 @@ static const struct snd_soc_dapm_route sun50i_a64_codec_routes[] = {
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{ "EARPIECE", NULL, "Earpiece Amp" },
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};
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static int sun50i_a64_codec_suspend(struct snd_soc_component *component)
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{
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return regmap_update_bits(component->regmap, SUN50I_ADDA_HP_CTRL,
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BIT(SUN50I_ADDA_HP_CTRL_PA_CLK_GATE),
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BIT(SUN50I_ADDA_HP_CTRL_PA_CLK_GATE));
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}
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static int sun50i_a64_codec_resume(struct snd_soc_component *component)
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{
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return regmap_update_bits(component->regmap, SUN50I_ADDA_HP_CTRL,
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BIT(SUN50I_ADDA_HP_CTRL_PA_CLK_GATE), 0);
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}
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static const struct snd_soc_component_driver sun50i_codec_analog_cmpnt_drv = {
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.controls = sun50i_a64_codec_controls,
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.num_controls = ARRAY_SIZE(sun50i_a64_codec_controls),
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@ -445,6 +458,8 @@ static const struct snd_soc_component_driver sun50i_codec_analog_cmpnt_drv = {
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.num_dapm_widgets = ARRAY_SIZE(sun50i_a64_codec_widgets),
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.dapm_routes = sun50i_a64_codec_routes,
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.num_dapm_routes = ARRAY_SIZE(sun50i_a64_codec_routes),
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.suspend = sun50i_a64_codec_suspend,
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.resume = sun50i_a64_codec_resume,
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};
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static const struct of_device_id sun50i_codec_analog_of_match[] = {
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