• Takashi Iwai's avatar
    ALSA: hda - Adjust speaker HPF and add LED support for HP Spectre 13 · 8b3dfdaf
    Takashi Iwai authored
    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: default avatarTakashi Iwai <tiwai@suse.de>
    8b3dfdaf
patch_sigmatel.c 135 KB