From: Martin Povišer <povik+lin@cutebit.org>
Date: Mon, 19 Sep 2022 17:34:53 +0000 (+0200)
Subject: ASoC: tas2770: Reinit regcache on reset
X-Git-Tag: v6.6.17~6351^2~20^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0a0342ede303fc420f3a388e1ae82da3ae8ff6bd;p=platform%2Fkernel%2Flinux-rpi.git

ASoC: tas2770: Reinit regcache on reset

On probe of the ASoC component, the device is reset but the regcache is
retained. This means the regcache gets out of sync if the codec is
rebound to a sound card for a second time. Fix it by reinitializing the
regcache to defaults after the device is reset.

Fixes: b0bcbe615756 ("ASoC: tas2770: Fix calling reset in probe")
Signed-off-by: Martin Povišer <povik+lin@cutebit.org>
Link: https://lore.kernel.org/r/20220919173453.84292-1-povik+lin@cutebit.org
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/sound/soc/codecs/tas2770.c b/sound/soc/codecs/tas2770.c
index bb653b6..b676523 100644
--- a/sound/soc/codecs/tas2770.c
+++ b/sound/soc/codecs/tas2770.c
@@ -495,6 +495,8 @@ static struct snd_soc_dai_driver tas2770_dai_driver[] = {
 	},
 };
 
+static const struct regmap_config tas2770_i2c_regmap;
+
 static int tas2770_codec_probe(struct snd_soc_component *component)
 {
 	struct tas2770_priv *tas2770 =
@@ -508,6 +510,7 @@ static int tas2770_codec_probe(struct snd_soc_component *component)
 	}
 
 	tas2770_reset(tas2770);
+	regmap_reinit_cache(tas2770->regmap, &tas2770_i2c_regmap);
 
 	return 0;
 }