ALSA: hda/cirrus: Use CS8409 filter to fix abnormal sounds on Bullseye
authorStefan Binding <sbinding@opensource.cirrus.com>
Mon, 26 Apr 2021 16:37:49 +0000 (17:37 +0100)
committerTakashi Iwai <tiwai@suse.de>
Mon, 26 Apr 2021 16:45:06 +0000 (18:45 +0200)
commit45b14fe200ba0611b6c3874aa5bba584dc979fb9
tree9be24068b7a2b874e82e8610499e93d33f8a39e7
parent0e853a9c3937caa9f13fdde547d6202f92457c2b
ALSA: hda/cirrus: Use CS8409 filter to fix abnormal sounds on Bullseye

Cracking noises have been reported on the built-in speaker for certain
Bullseye platforms, when volume is > 80%.

This issue is caused by the specific combination of Codec and AMP in
this platform, and cannot be fixed by the AMP, so indead must be fixed
at codec level, by adding attenuation to the volume.

Tested on DELL Inspiron-3505, DELL Inspiron-3501, DELL Inspiron-3500

Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com>
Signed-off-by: Vitaly Rodionov <vitalyr@opensource.cirrus.com>
BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1924997
Reported-and-tested-by: You-Sheng Yang <vicamo.yang@canonical.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210426163749.196153-3-vitalyr@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/pci/hda/patch_cirrus.c