linux-kernel - [PATCH v1] ASoC: rt5631: Fix regcache sync errors on resume

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Date:   Mon, 12 Jul 2021 03:50:11 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Oder Chiou <oder_chiou@...ltek.com>,
        Mark Brown <broonie@...nel.org>, Takashi Iwai <tiwai@...e.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Maxim Schwalm <maxim.schwalm@...il.com>,
        Liam Girdwood <lgirdwood@...il.com>
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: [PATCH v1] ASoC: rt5631: Fix regcache sync errors on resume

From: Maxim Schwalm <maxim.schwalm@...il.com>

The ALC5631 does not like multi-write accesses, avoid them. This fixes:

rt5631 4-001a: Unable to sync registers 0x3a-0x3c. -121

errors on resume from suspend (and all registers after the registers in
the error not being synced).

Inspired by commit 2d30e9494f1e ("ASoC: rt5651: Fix regcache sync errors
on resume") from Hans de Geode, which fixed the same errors on ALC5651.

Signed-off-by: Maxim Schwalm <maxim.schwalm@...il.com>
---
 sound/soc/codecs/rt5631.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/soc/codecs/rt5631.c b/sound/soc/codecs/rt5631.c
index 3000bc128b5b..38356ea2bd6e 100644
--- a/sound/soc/codecs/rt5631.c
+++ b/sound/soc/codecs/rt5631.c
@@ -1695,6 +1695,8 @@ static const struct regmap_config rt5631_regmap_config = {
 	.reg_defaults = rt5631_reg,
 	.num_reg_defaults = ARRAY_SIZE(rt5631_reg),
 	.cache_type = REGCACHE_RBTREE,
+	.use_single_read = true,
+	.use_single_write = true,
 };
 
 static int rt5631_i2c_probe(struct i2c_client *i2c,
-- 
2.32.0