From: Shuming Fan shumingf@realtek.com

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 --- sound/soc/codecs/rt5682.c | 44 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+)

diff --git a/sound/soc/codecs/rt5682.c b/sound/soc/codecs/rt5682.c index 51ecaa2abcd1..7dc01ae6bb66 100644 --- a/sound/soc/codecs/rt5682.c +++ b/sound/soc/codecs/rt5682.c @@ -2916,10 +2916,46 @@ 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; @@ -2935,6 +2971,14 @@ 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));