linux-kernel - [PATCH 7/9] ASoc: rt5651: Fix regcache sync errors on resume

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Date:   Sun, 18 Feb 2018 23:01:44 +0100
From:   Hans de Goede <hdegoede@...hat.com>
To:     Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>
Cc:     Hans de Goede <hdegoede@...hat.com>, linux-kernel@...r.kernel.org
Subject: [PATCH 7/9] ASoc: rt5651: Fix regcache sync errors on resume

The ALC5651 does not like multi-write accesses, avoid them. This fixes:

rt5651 i2c-10EC5651:00: Unable to sync registers 0x27-0x28. -121

Errors on resume (and all registers after the registers in the error not
being synced).

Signed-off-by: Hans de Goede <hdegoede@...hat.com>
---
 sound/soc/codecs/rt5651.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/soc/codecs/rt5651.c b/sound/soc/codecs/rt5651.c
index 831b297978a4..45a73049cf64 100644
--- a/sound/soc/codecs/rt5651.c
+++ b/sound/soc/codecs/rt5651.c
@@ -1722,6 +1722,7 @@ static const struct regmap_config rt5651_regmap = {
 	.num_reg_defaults = ARRAY_SIZE(rt5651_reg),
 	.ranges = rt5651_ranges,
 	.num_ranges = ARRAY_SIZE(rt5651_ranges),
+	.use_single_rw = true,
 };
 
 #if defined(CONFIG_OF)
-- 
2.14.3