linux-kernel - [223/262] ASoC: Ensure the WM8962 oscillator and PLLs start up disabled

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Message-Id: <20111109212723.009341145@clark.kroah.org>
Date:	Wed, 09 Nov 2011 13:29:05 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: [223/262] ASoC: Ensure the WM8962 oscillator and PLLs start up disabled

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

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

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

commit 2af8de8c39cf58e5a5e40a9d5d71332da98e6ba7 upstream.

Since there is no current software control for these they would otherwise
be left enabled, consuming power.

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

---
 sound/soc/codecs/wm8962.c |    5 +++++
 1 file changed, 5 insertions(+)

--- a/sound/soc/codecs/wm8962.c
+++ b/sound/soc/codecs/wm8962.c
@@ -3829,6 +3829,11 @@ static int wm8962_probe(struct snd_soc_c
 	 */
 	snd_soc_update_bits(codec, WM8962_CLOCKING2, WM8962_SYSCLK_ENA, 0);
 
+	/* Ensure that the oscillator and PLLs are disabled */
+	snd_soc_update_bits(codec, WM8962_PLL2,
+			    WM8962_OSC_ENA | WM8962_PLL2_ENA | WM8962_PLL3_ENA,
+			    0);
+
 	regulator_bulk_disable(ARRAY_SIZE(wm8962->supplies), wm8962->supplies);
 
 	if (pdata) {


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