path: root/sound/pci/hda/patch_analog.c
diff options
authorTakashi Iwai <tiwai@suse.de>2007-10-26 12:35:56 +0200
committerJaroslav Kysela <perex@perex.cz>2007-11-19 18:38:32 +0100
commitd29240ce57d96db7300360d1e6f18357810a5c2b (patch)
tree5e095bde9f0180962481bbf330fd5a7de0bb8fd5 /sound/pci/hda/patch_analog.c
parentMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86 (diff)
[ALSA] hda-codec - Disable shared stream on AD1986A
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>
Diffstat (limited to '')
1 files changed, 8 insertions, 0 deletions
diff --git a/sound/pci/hda/patch_analog.c b/sound/pci/hda/patch_analog.c
index 0ee8ae4d4410..196ad3c9405d 100644
--- a/sound/pci/hda/patch_analog.c
+++ b/sound/pci/hda/patch_analog.c
@@ -957,6 +957,14 @@ static int patch_ad1986a(struct hda_codec *codec)
+ /* 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;