ASoC: rt5682: Avoid the unexpected IRQ event during going to suspend

When the system suspends, the codec driver will set SAR to
power saving mode if a headset is plugged in.
There is a chance to generate an unexpected IRQ, and leads to
issues after resuming such as noise from OMTP type headsets.

Signed-off-by: Derek Fang <derek.fang@realtek.com>
Link: https://lore.kernel.org/r/20211109095450.12950-1-derek.fang@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/rt5682.c b/sound/soc/codecs/rt5682.c
index 78b4cb5..a486ac2 100644 (file)
--- a/sound/soc/codecs/rt5682.c
+++ b/sound/soc/codecs/rt5682.c
@@ -48,6 +48,7 @@ static const struct reg_sequence patch_list[] = {
        {RT5682_SAR_IL_CMD_6, 0x0110},
        {RT5682_CHARGE_PUMP_1, 0x0210},
        {RT5682_HP_LOGIC_CTRL_2, 0x0007},
+       {RT5682_SAR_IL_CMD_2, 0xac00},
 };
 
 void rt5682_apply_patch_list(struct rt5682_priv *rt5682, struct device *dev)
@@ -2943,9 +2944,6 @@ static int rt5682_suspend(struct snd_soc_component *component)
        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;
 
@@ -2967,10 +2965,15 @@ static int rt5682_suspend(struct snd_soc_component *component)
                /* 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 | RT5682_SAR_SEL_MB1_MB2_MASK, 0);
+                       RT5682_SAR_SEL_MB1_MB2_MASK, 0);
+               usleep_range(5000, 6000);
+               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);
+               usleep_range(10000, 12000);
                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);
+                       RT5682_SAR_BUTT_DET_MASK | RT5682_SAR_BUTDET_MODE_MASK,
+                       RT5682_SAR_BUTT_DET_EN | RT5682_SAR_BUTDET_POW_SAV);
        }
 
        regcache_cache_only(rt5682->regmap, true);