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authorTakashi Iwai <tiwai@suse.de>2015-10-04 22:44:12 +0200
committerTakashi Iwai <tiwai@suse.de>2015-10-04 22:47:40 +0200
commitc7e1008048a97148d3aecae742f66fb2f944644c (patch)
tree71af26c756afe44f5a5dad59cd8c0f83bf542b0a
parente8ff581f7ac2bc3b8886094b7ca635dcc4d1b0e9 (diff)
downloadop-kernel-dev-c7e1008048a97148d3aecae742f66fb2f944644c.zip
op-kernel-dev-c7e1008048a97148d3aecae742f66fb2f944644c.tar.gz
ALSA: hda - Disable power_save_node for IDT 92HD73xx chips
The recent widget power saving introduced some unavoidable click noises on old IDT 92HD73xx chips while it still seems working on the compatible new chips. In the bugzilla, we tried lots of tests and workarounds, but they didn't help much. So, let's disable the feature for these specific chips as the least (but safest) fix. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=104981 Cc: <stable@vger.kernel.org> # v4.1+ Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r--sound/pci/hda/patch_sigmatel.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 9d947ae..def5cc8 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -4520,7 +4520,11 @@ static int patch_stac92hd73xx(struct hda_codec *codec)
return err;
spec = codec->spec;
- codec->power_save_node = 1;
+ /* enable power_save_node only for new 92HD89xx chips, as it causes
+ * click noises on old 92HD73xx chips.
+ */
+ if ((codec->core.vendor_id & 0xfffffff0) != 0x111d7670)
+ codec->power_save_node = 1;
spec->linear_tone_beep = 0;
spec->gen.mixer_nid = 0x1d;
spec->have_spdif_mux = 1;
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