ALSA: HDA patch_via.c: Independent DAC for headphone
This mode allows an output stream to have two substreams, one for the speakers and one for the headphone. Each of the substreams has independent PCM data and uses a different DAC. Signed-off-by: NHarald Welte <HaraldWelte@viatech.com> Signed-off-by: NTakashi Iwai <tiwai@suse.de> Signed-off-by: NJaroslav Kysela <perex@perex.cz>
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