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[ALSA] hda-codec - Disable shared stream on AD1986A

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AD1986A has a hardware problem that it cannot share a stream with
multiple pins properly.  The problem occurs e.g. when a volume is changed
during playback.
So far, hda-intel driver unconditionally assigns the stream to multiple
output pins in copy-front mode, and this should be avoided for AD1986A
codec.
The original fix patch was by zhejiang <zhe.jiang@intel.com>.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Takashi Iwai
2007-10-26 12:35:56 +02:00
committed by Jaroslav Kysela
parent 2ffbb8377c
commit d29240ce57
3 changed files with 13 additions and 3 deletions
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8
sound/pci/hda/patch_analog.c
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@ -957,6 +957,14 @@ static int patch_ad1986a(struct hda_codec *codec)
break;
}
/* AD1986A has a hardware problem that it can't share a stream
* with multiple output pins. The copy of front to surrounds
* causes noisy or silent outputs at a certain timing, e.g.
* changing the volume.
* So, let's disable the shared stream.
*/
spec->multiout.no_share_stream = 1;
return 0;
}