linux-kernel - [PATCH 50/72] ASoC: wm8903: Fix the bypass to HP/LINEOUT when no DAC or ADC is running

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Date:	Thu, 18 Apr 2013 10:16:35 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Alban Bedel <alban.bedel@...onic-design.de>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 50/72] ASoC: wm8903: Fix the bypass to HP/LINEOUT when no DAC or ADC is running

3.5.7.11 -stable 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: Luis Henriques <luis.henriques@...onical.com>
---
 sound/soc/codecs/wm8903.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/soc/codecs/wm8903.c b/sound/soc/codecs/wm8903.c
index 86b8a29..8ddfc19 100644
--- a/sound/soc/codecs/wm8903.c
+++ b/sound/soc/codecs/wm8903.c
@@ -1082,6 +1082,8 @@ static const struct snd_soc_dapm_route wm8903_intercon[] = {
 	{ "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" },
-- 
1.8.1.2

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