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ALSA: hda: Fix max PCM level to 0 dB for Fujitsu-Siemens laptops using CX20549 (Venice)

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BugLink: https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4792

Cristian reported that these models have really bad sound above 6 dB
and proposed the original patch. I've updated the comment to reflect
this change.

Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Reported-by: Cristian Klein
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Daniel T Chen 2009-11-25 18:27:20 -05:00 committed by Takashi Iwai
parent 95a618bdac
commit 0b587fc4d3
1 changed files with 4 additions and 3 deletions
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7
sound/pci/hda/patch_conexant.c
View file

@ -1171,9 +1171,10 @@ static int patch_cxt5045(struct hda_codec *codec)
switch (codec->subsystem_id >> 16) {
case 0x103c:
/* HP laptop has a really bad sound over 0dB on NID 0x17.
* Fix max PCM level to 0 dB
* (originall it has 0x2b steps with 0dB offset 0x14)
case 0x1734:
/* HP & Fujitsu-Siemens laptops have really bad sound over 0dB
* on NID 0x17. Fix max PCM level to 0 dB
* (originally it has 0x2b steps with 0dB offset 0x14)
*/
snd_hda_override_amp_caps(codec, 0x17, HDA_INPUT,
(0x14 << AC_AMPCAP_OFFSET_SHIFT) |