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ASoC: rt5682: enable SAR ADC power saving mode during suspend

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The SAR ADC power saving mode could reduce power consumption on MICVDD rail.
Therefore, this patch saves power consumption during suspend state if the headset was connected.

Signed-off-by: Shuming Fan <shumingf@realtek.com>
Link: https://lore.kernel.org/r/20210727084846.9867-1-shumingf@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Shuming Fan 2021-07-27 16:48:46 +08:00 committed by Mark Brown
parent bc1c8e4eee
commit 89d751d8f9
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
1 changed files with 44 additions and 0 deletions
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44
sound/soc/codecs/rt5682.c
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@ -2911,10 +2911,46 @@ static void rt5682_remove(struct snd_soc_component *component)
static int rt5682_suspend(struct snd_soc_component *component)
{
struct rt5682_priv *rt5682 = snd_soc_component_get_drvdata(component);
unsigned int val;
if (rt5682->is_sdw)
return 0;
cancel_delayed_work_sync(&rt5682->jack_detect_work);
cancel_delayed_work_sync(&rt5682->jd_check_work);
if (rt5682->hs_jack && rt5682->jack_type == SND_JACK_HEADSET) {
snd_soc_component_update_bits(component, RT5682_CBJ_CTRL_1,
RT5682_MB1_PATH_MASK | RT5682_MB2_PATH_MASK,
RT5682_CTRL_MB1_REG | RT5682_CTRL_MB2_REG);
val = snd_soc_component_read(component,
RT5682_CBJ_CTRL_2) & RT5682_JACK_TYPE_MASK;
switch (val) {
case 0x1:
snd_soc_component_update_bits(component, RT5682_SAR_IL_CMD_1,
RT5682_SAR_SEL_MB1_MASK | RT5682_SAR_SEL_MB2_MASK,
RT5682_SAR_SEL_MB1_NOSEL | RT5682_SAR_SEL_MB2_SEL);
break;
case 0x2:
snd_soc_component_update_bits(component, RT5682_SAR_IL_CMD_1,
RT5682_SAR_SEL_MB1_MASK | RT5682_SAR_SEL_MB2_MASK,
RT5682_SAR_SEL_MB1_SEL | RT5682_SAR_SEL_MB2_NOSEL);
break;
default:
break;
}
snd_soc_component_update_bits(component, RT5682_PWR_ANLG_3,
RT5682_PWR_CBJ, 0);
/* enter SAR ADC power saving mode */
snd_soc_component_update_bits(component, RT5682_SAR_IL_CMD_1,
RT5682_SAR_BUTT_DET_MASK | RT5682_SAR_BUTDET_MODE_MASK | RT5682_SAR_BUTDET_RST_MASK, 0);
snd_soc_component_update_bits(component, RT5682_SAR_IL_CMD_1,
RT5682_SAR_BUTT_DET_MASK | RT5682_SAR_BUTDET_MODE_MASK | RT5682_SAR_BUTDET_RST_MASK,
RT5682_SAR_BUTT_DET_EN | RT5682_SAR_BUTDET_POW_SAV | RT5682_SAR_BUTDET_RST_NORMAL);
}
regcache_cache_only(rt5682->regmap, true);
regcache_mark_dirty(rt5682->regmap);
return 0;
@ -2930,6 +2966,14 @@ static int rt5682_resume(struct snd_soc_component *component)
regcache_cache_only(rt5682->regmap, false);
regcache_sync(rt5682->regmap);
if (rt5682->hs_jack && rt5682->jack_type == SND_JACK_HEADSET) {
snd_soc_component_update_bits(component, RT5682_CBJ_CTRL_1,
RT5682_MB1_PATH_MASK | RT5682_MB2_PATH_MASK,
RT5682_CTRL_MB1_FSM | RT5682_CTRL_MB2_FSM);
snd_soc_component_update_bits(component, RT5682_PWR_ANLG_3,
RT5682_PWR_CBJ, RT5682_PWR_CBJ);
}
mod_delayed_work(system_power_efficient_wq,
&rt5682->jack_detect_work, msecs_to_jiffies(250));