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ASoC: wcd937x: Update EAR PA CnP FSM sequence

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EAR PA short switch is not released after
PA is turned on and off.
Address this hardware issue by updating the
EAR PA CnP FSM while EAR power down sequence.

Change-Id: If4269c30c13572db1b252f223368d444b9250901
Signed-off-by: Soumya Managoli <smanag@codeaurora.org>
This commit is contained in:
Soumya Managoli 2021-10-19 14:17:05 +05:30 • committed by Gerrit - the friendly Code Review server
commit 55fdf543d2
1 changed files with 16 additions and 0 deletions
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16
asoc/codecs/wcd937x/wcd937x.c
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@ -1055,6 +1055,22 @@ static int wcd937x_codec_enable_ear_pa(struct snd_soc_dapm_widget *w,
snd_soc_component_update_bits(component,
WCD937X_DIGITAL_PDM_WD_CTL0,
0x17, 0x00);
usleep_range(10000, 10010);
/* disable EAR CnP FSM */
snd_soc_component_update_bits(component,
WCD937X_EAR_EAR_EN_REG,
0x02, 0x00);
/* toggle EAR PA to let PA control registers take effect */
snd_soc_component_update_bits(component,
WCD937X_ANA_EAR,
0x80, 0x80);
snd_soc_component_update_bits(component,
WCD937X_ANA_EAR,
0x80, 0x00);
/* enable EAR CnP FSM */
snd_soc_component_update_bits(component,
WCD937X_EAR_EAR_EN_REG,
0x02, 0x02);
break;
};
return ret;