ALSA: hda - Fix inverted internal mic not indicated on some machines
authorDavid Henningsson <david.henningsson@canonical.com>
Mon, 14 Oct 2013 08:16:22 +0000 (10:16 +0200)
committerTakashi Iwai <tiwai@suse.de>
Mon, 14 Oct 2013 08:30:49 +0000 (10:30 +0200)
commitccb041571b73888785ef7828a276e380125891a4
tree43548d480357ad6439acbc67aab34d71b59467e4
parentfbc78ad62471c54ca5c10c6a7d440d1ca64d74e7
ALSA: hda - Fix inverted internal mic not indicated on some machines

The create_bind_cap_vol_ctl does not create any control indicating
that an inverted dmic is present. Therefore, create multiple
capture volumes in this scenario, so we always have some indication
that the internal mic is inverted.

This happens on the Lenovo Ideapad U310 as well as the Lenovo Yoga 13
(both are based on the CX20590 codec), but the fix is generic and
could be needed for other codecs/machines too.

Thanks to Szymon Acedański for the pointer and a draft patch.

BugLink: https://bugs.launchpad.net/bugs/1239392
BugLink: https://bugs.launchpad.net/bugs/1227491
Reported-by: Szymon Acedański <accek@mimuw.edu.pl>
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/pci/hda/hda_generic.c