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)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 4 Nov 2013 12:31:06 +0000 (04:31 -0800)
commit1c4bd2b14d14f524c51839c64aa3f79a81622562
tree49d3343420640b123845304cc7d6e7faee3055ee
parent1f931f65de9d04daf024eeb4dd6a8fe93b7a8e91
ALSA: hda - Fix inverted internal mic not indicated on some machines

commit ccb041571b73888785ef7828a276e380125891a4 upstream.

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>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
sound/pci/hda/hda_generic.c