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ASoC: nau8821: add new widget to control system clock

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Add new widget to control system clock for power saving.

Signed-off-by: Wallace Lin <savagecin0@gmail.com>
Signed-off-by: Wallace Lin <sjlin0@nuvoton.com>
Link: https://lore.kernel.org/r/20220719084047.11572-1-savagecin@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Wallace Lin 2022-07-19 16:40:47 +08:00 committed by Mark Brown
parent 0caf1120c5
commit 0cf470c083
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GPG Key ID: 24D68B725D5487D0
1 changed files with 30 additions and 0 deletions
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30
sound/soc/codecs/nau8821.c
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@ -36,6 +36,7 @@
static int nau8821_configure_sysclk(struct nau8821 *nau8821,
int clk_id, unsigned int freq);
static bool nau8821_is_jack_inserted(struct regmap *regmap);
struct nau8821_fll {
int mclk_src;
@ -495,7 +496,33 @@ static int nau8821_output_dac_event(struct snd_soc_dapm_widget *w,
return 0;
}
static int system_clock_control(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k, int event)
{
struct snd_soc_component *component =
snd_soc_dapm_to_component(w->dapm);
struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
if (SND_SOC_DAPM_EVENT_OFF(event)) {
dev_dbg(nau8821->dev, "system clock control : POWER OFF\n");
/* Set clock source to disable or internal clock before the
* playback or capture end. Codec needs clock for Jack
* detection and button press if jack inserted; otherwise,
* the clock should be closed.
*/
if (nau8821_is_jack_inserted(nau8821->regmap)) {
nau8821_configure_sysclk(nau8821,
NAU8821_CLK_INTERNAL, 0);
} else {
nau8821_configure_sysclk(nau8821, NAU8821_CLK_DIS, 0);
}
}
return 0;
}
static const struct snd_soc_dapm_widget nau8821_dapm_widgets[] = {
SND_SOC_DAPM_SUPPLY("System Clock", SND_SOC_NOPM, 0, 0,
system_clock_control, SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_SUPPLY("MICBIAS", NAU8821_R74_MIC_BIAS,
NAU8821_MICBIAS_POWERUP_SFT, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("DMIC Clock", SND_SOC_NOPM, 0, 0,
@ -607,6 +634,9 @@ static const struct snd_soc_dapm_route nau8821_dapm_routes[] = {
{"AIFTX", NULL, "ADCL Digital path"},
{"AIFTX", NULL, "ADCR Digital path"},
{"AIFTX", NULL, "System Clock"},
{"AIFRX", NULL, "System Clock"},
{"DDACL", NULL, "AIFRX"},
{"DDACR", NULL, "AIFRX"},