• Takashi Iwai's avatar
    ALSA: hda/realtek - Reduce vol/mute ctl lookups at parsing codec · 792cf2fa
    Takashi Iwai authored
    So far, Realtek codec driver evaluates the NIDs for volume and mute
    controls twice, once while parsing the DACs and evaluating the
    assignment, and another while creating the mixer elements.  This is
    utterly redundant and even fragile, as it's assuming that the ctl
    element evaluation is identical between both parsing DACs and creating
    mixer elements.
    
    This patch simplifies the code flow by doing the volume / mute
    controls evaluation only once while parsing the DACs.  The patch ended
    up in larger changes than expected because of some cleanups became
    mandatory.
    
    As a gratis bonus, this patch also fixes some cases where the stereo
    channels are used wrongly for mono amps.
    Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
    792cf2fa
patch_realtek.c 203 KB