ALSA: hda - Re-implementation of VIA Independent-HP sharing with side stream

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This patch adds the re-implementation of Independent-HP mode in the
case where the DAC is shared between HP and side-channel streams.
Now the driver tries to parse the output-path using the pre-parsed
side-channel DAC for the independent HP output, too.

When a playback PCM stream is opened with this shared mode, the
Independent-HP mixer switch can't be changed for avoiding the conflict,
thus it returns -EBUSY error.

One remaining unintuitive issue is that the DAC volume is still
controlled as "Side" volume although it's shared by both independent-HP
and side streams.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

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This commit is contained in:

Takashi Iwai 2011-06-30 17:24:47 +02:00

parent e322a36d39

commit 2525050518

1 changed files with 37 additions and 6 deletions

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sound/pci/hda/patch_via.c

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