ALSA: hda - Adjust speaker HPF and add LED support for HP Spectre 13

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commit 8b3dfdaf0c upstream.

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
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Takashi Iwai 2014-06-24 13:55:25 +02:00 • committed by Greg Kroah-Hartman

parent 9d62370910

commit 9931e761bc

2 changed files with 62 additions and 1 deletions

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5

Documentation/sound/alsa/HD-Audio-Models.txt

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58

sound/pci/hda/patch_sigmatel.c

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