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ALSA: wm8990: Implement speaker volume PGA
The latest revisions of the WM8990 provide a programmable gain amplifier for the speaker - configure the register cache and implement controls for this. Older revisions of the device ignore writes to these controls. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Mark Brown
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Takashi Iwai
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Aug 15, 2008
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