path: root/Documentation
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authorTakashi Iwai <tiwai@suse.de>2014-06-24 13:55:25 +0200
committerTakashi Iwai <tiwai@suse.de>2014-06-25 17:50:24 +0200
commit8b3dfdaf0c25a584cb31d04d2574115cf2d422ab (patch)
treed8e04396b7d16db17fb6de493d814477673ef31d /Documentation
parent76c2132ec9805120eb724cae4d2a8d30af27b3fd (diff)
ALSA: hda - Adjust speaker HPF and add LED support for HP Spectre 13
HP Spectre 13 has the IDT 92HD95 codec, and BIOS seems to set the default high-pass filter in some "safer" range, which results in the very soft tone from the built-in speakers in contrast to Windows. Also, the mute LED control is missing, since 92HD95 codec still has no HP-specific fixups for GPIO setups. This patch adds these missing features: the HPF is adjusted by the vendor-specific verb, and the LED is set up from a DMI string (but with the default polarity = 0 assumption due to the incomplete BIOS on the given machine). Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=74841 Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'Documentation')
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/sound/alsa/HD-Audio-Models.txt b/Documentation/sound/alsa/HD-Audio-Models.txt
index 85c362d8ea34..d1ab5e17eb13 100644
--- a/Documentation/sound/alsa/HD-Audio-Models.txt
+++ b/Documentation/sound/alsa/HD-Audio-Models.txt
@@ -286,6 +286,11 @@ STAC92HD83*
hp-inv-led HP with broken BIOS for inverted mute LED
auto BIOS setup (default)
+ hp-led LED support for HP laptops
+ hp-bass Bass HPF setup for HP Spectre 13
vaio VAIO laptop without SPDIF

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