[PATCH 3.2 023/185] ASoC: ak4642: prevent un-necessary changes toSG_SL1

[Ben Hutchings]

3.2.54-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Phil Edworthy <phil.edworthy@xxxxxxxxxxx>

commit 7b5bfb82882b9b1c8423ce0ed6852ca3762d967a upstream.

If you record the sound during playback,
the playback sound becomes silent.
Modify so that the codec driver does not clear
SG_SL1::DACL bit which is controlled under widget

Signed-off-by: Phil Edworthy <phil.edworthy@xxxxxxxxxxx>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
 sound/soc/codecs/ak4642.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/sound/soc/codecs/ak4642.c
+++ b/sound/soc/codecs/ak4642.c
@@ -214,7 +214,7 @@ static int ak4642_dai_startup(struct snd
 		 * This operation came from example code of
 		 * "ASAHI KASEI AK4642" (japanese) manual p94.
 		 */
-		snd_soc_write(codec, SG_SL1, PMMP | MGAIN0);
+		snd_soc_update_bits(codec, SG_SL1, PMMP | MGAIN0, PMMP | MGAIN0);
 		snd_soc_write(codec, TIMER, ZTM(0x3) | WTM(0x3));
 		snd_soc_write(codec, ALC_CTL1, ALC | LMTH0);
 		snd_soc_update_bits(codec, PW_MGMT1, PMVCM | PMADL,

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