linux-kernel - [31/75] ASoC: wm8903: Fix the bypass to HP/LINEOUT when no DAC or ADC is running

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Message-ID: <lsq.1366640759.672919477@decadent.org.uk>
Date:	Mon, 22 Apr 2013 15:25:59 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org,
	"Mark Brown" <broonie@...nsource.wolfsonmicro.com>,
	"Alban Bedel" <alban.bedel@...onic-design.de>
Subject: [31/75] ASoC: wm8903: Fix the bypass to HP/LINEOUT when no DAC or
 ADC is running

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

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

From: Alban Bedel <alban.bedel@...onic-design.de>

commit f1ca493b0b5e8f42d3b2dc8877860db2983f47b6 upstream.

The Charge Pump needs the DSP clock to work properly, without it the
bypass to HP/LINEOUT is not working properly. This requirement is not
mentioned in the datasheet but has been confirmed by Mark Brown from
Wolfson.

Signed-off-by: Alban Bedel <alban.bedel@...onic-design.de>
Signed-off-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 sound/soc/codecs/wm8903.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/sound/soc/codecs/wm8903.c
+++ b/sound/soc/codecs/wm8903.c
@@ -1101,6 +1101,8 @@ static const struct snd_soc_dapm_route w
 	{ "ROP", NULL, "Right Speaker PGA" },
 	{ "RON", NULL, "Right Speaker PGA" },
 
+	{ "Charge Pump", NULL, "CLK_DSP" },
+
 	{ "Left Headphone Output PGA", NULL, "Charge Pump" },
 	{ "Right Headphone Output PGA", NULL, "Charge Pump" },
 	{ "Left Line Output PGA", NULL, "Charge Pump" },

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