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 12:35:20 +0000 (04:35 -0800)
commit40e806494937a96e21b01b3a72c212c4a8e45c01
treea7a995810f9b50594bc7ee64060fdc88066b554c
parentf4d891400a11576d76a7dfd0ff62c17fd371800c
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