ASoC: wm8804: Enable runtime PM

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Currently both the oscillator and the PLL are powered up in
set_bias_level. This can be problematic when using output clocks from
the wm8804 for other devices. The snd_soc_codec_set_pll API defines that
a clock should be available once the call returns, however, with all the
clocking controlled in set_bias_level this is not currently the case.

This patch enables pm_runtime for the wm8804, enabling both the
regulators and the oscillator when the chip resumes, and enabling the
PLL in the snd_soc_codec_set_pll call. Naturally the enabling the PLL
will also cause the chip to resume.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

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This commit is contained in:

Charles Keepax 2015-04-07 12:55:10 +01:00 • committed by Mark Brown

parent 5631f18763

commit 1a60667fc8

4 changed files with 62 additions and 50 deletions

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sound/soc/codecs/wm8804-i2c.c

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sound/soc/codecs/wm8804-spi.c

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sound/soc/codecs/wm8804.c

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sound/soc/codecs/wm8804.h

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