linux-kernel - [ 078/133] ASoC: wm_hubs: Ensure volume updates are handled during class W startup

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Message-Id: <20121010224908.513184542@linuxfoundation.org>
Date:	Thu, 11 Oct 2012 07:51:44 +0900
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	alan@...rguk.ukuu.org.uk,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: [ 078/133] ASoC: wm_hubs: Ensure volume updates are handled during class W startup

3.5-stable review patch.  If anyone has any objections, please let me know.

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

From: Mark Brown <broonie@...nsource.wolfsonmicro.com>

commit eb4d5fc1f0ce89e3d5b072c594a1e213a0e05881 upstream.

In some circumstances we may need to flush volume updates to the device
after switching to class W mode. Do this unconditionally to ensure that
these situations are handled.

Signed-off-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 sound/soc/codecs/wm_hubs.c |    5 +++++
 1 file changed, 5 insertions(+)

--- a/sound/soc/codecs/wm_hubs.c
+++ b/sound/soc/codecs/wm_hubs.c
@@ -634,6 +634,11 @@ void wm_hubs_update_class_w(struct snd_s
 
 	snd_soc_update_bits(codec, WM8993_CLASS_W_0,
 			    WM8993_CP_DYN_V | WM8993_CP_DYN_FREQ, enable);
+
+	snd_soc_write(codec, WM8993_LEFT_OUTPUT_VOLUME,
+		      snd_soc_read(codec, WM8993_LEFT_OUTPUT_VOLUME));
+	snd_soc_write(codec, WM8993_RIGHT_OUTPUT_VOLUME,
+		      snd_soc_read(codec, WM8993_RIGHT_OUTPUT_VOLUME));
 }
 EXPORT_SYMBOL_GPL(wm_hubs_update_class_w);
 


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