linux-kernel - [PATCH] ASoC: Writing register default value for the reset register

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Message-ID: <1318326900.3526.2.camel@phoenix>
Date:	Tue, 11 Oct 2011 17:55:00 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Dimitris Papastamos <dp@...nsource.wolfsonmicro.com>,
	Liam Girdwood <lrg@...com>, alsa-devel@...a-project.org
Subject: [PATCH] ASoC: Writing register default value for the reset register

The WM8983 can be reset by performing a write of any value to
the software reset register.
To avoid writing to the software reset register while resume,
we should write the same value in wm8983_reg_defs to software
reset register in wm8983_probe().
The write to the reset register is suppressed by the cache
restore code when it skips writes of default registers.

Signed-off-by: Axel Lin <axel.lin@...il.com>
---
 sound/soc/codecs/wm8983.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/sound/soc/codecs/wm8983.c b/sound/soc/codecs/wm8983.c
index 17f04ec..93ee284 100644
--- a/sound/soc/codecs/wm8983.c
+++ b/sound/soc/codecs/wm8983.c
@@ -1007,7 +1007,7 @@ static int wm8983_probe(struct snd_soc_codec *codec)
 		return ret;
 	}
 
-	ret = snd_soc_write(codec, WM8983_SOFTWARE_RESET, 0x8983);
+	ret = snd_soc_write(codec, WM8983_SOFTWARE_RESET, 0);
 	if (ret < 0) {
 		dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
 		return ret;
-- 
1.7.4.1



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