linux/sound
Takashi Iwai ef403edb75 ALSA: hda - Don't access stereo amps for mono channel widgets
The current HDA generic parser initializes / modifies the amp values
always in stereo, but this seems causing the problem on ALC3229 codec
that has a few mono channel widgets: namely, these mono widgets react
to actions for both channels equally.

In the driver code, we do care the mono channel and create a control
only for the left channel (as defined in HD-audio spec) for such a
node.  When the control is updated, only the left channel value is
changed.  However, in the resume, the right channel value is also
restored from the initial value we took as stereo, and this overwrites
the left channel value.  This ends up being the silent output as the
right channel has been never touched and remains muted.

This patch covers the places where unconditional stereo amp accesses
are done and converts to the conditional accesses.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=94581
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-03-13 07:37:21 +01:00
..
aoa Merge branch 'topic/snd-device' into for-next 2015-02-03 17:57:16 +01:00
arm ALSA: Deletion of checks before the function call "iounmap" 2015-01-04 15:13:45 +01:00
atmel ALSA: sound/atmel/ac97c.c: Add device tree support 2015-01-07 07:56:19 +01:00
core ALSA: control: Add sanity checks for user ctl id name string 2015-03-12 07:36:38 +01:00
drivers ALSA: opl3: small array underflow 2015-03-06 13:04:42 +01:00
firewire ALSA: firewire-lib: leave unit reference counting completely 2015-03-10 15:27:19 +01:00
i2c Merge branch 'topic/ak411x-fix' into for-next 2015-01-28 22:32:10 +01:00
isa ALSA: msnd: add some missing curly braces 2015-03-05 13:02:10 +01:00
mips Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
oss sound updates for 3.20-rc1 2015-02-11 08:51:59 -08:00
parisc ALSA: Include linux/io.h instead of asm/io.h 2015-01-28 16:49:33 +01:00
pci ALSA: hda - Don't access stereo amps for mono channel widgets 2015-03-13 07:37:21 +01:00
pcmcia ALSA: vx: Fix missing kerneldoc parameter descriptions 2014-11-11 09:39:10 +01:00
ppc ALSA: Include linux/io.h instead of asm/io.h 2015-01-28 16:49:33 +01:00
sh ALSA: Include linux/io.h instead of asm/io.h 2015-01-28 16:49:33 +01:00
soc Merge remote-tracking branch 'asoc/fix/sta32x' into asoc-linus 2015-03-04 20:42:43 +00:00
sparc ALSA: Include linux/io.h instead of asm/io.h 2015-01-28 16:49:33 +01:00
spi
synth ALSA: Include linux/uaccess.h and linux/bitopts.h instead of asm/* 2015-01-28 17:25:07 +01:00
usb ALSA: snd-usb: add quirks for Roland UA-22 2015-03-12 10:19:49 +01:00
ac97_bus.c
Kconfig
last.c
Makefile
sound_core.c
sound_firmware.c