[ALSA] snd-bt87x: Power down audio ADC when not in use

Sets a bit to power down the Bt87x's internal audio ADC when the ALSA device
isn't open, or when it is in 'digital mode' using an external ADC.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
1 file changed