alistair23-linux/sound
Anssi Hannula f06ab794af ALSA: hda - hdmi: Set converter channel count even without sink
Since commit 1df5a06a ("ALSA: hda - hdmi: Fix programmed active channel
count") channel count is no longer being set if monitor_present is 0.
This is because setting the count was moved after the CA value is
determined, which is only after the monitor_present check in
hdmi_setup_audio_infoframe().

Unfortunately, in some cases, such as with a non-spec-compliant codec or
with a problematic video driver, monitor_present is always 0. As a
specific example, this seems to happen with gen1 ATV (SiI1390 codec),
causing left-channel-only stereo playback (multi-channel playback has
apparently never worked with this codec despite it reporting 8 channels,
reason unknown).

Simply setting converter channel count without setting the pin infoframe
and channel mapping as well does not theoretically make much sense as
this will just mean they are out-of-sync and multichannel playback will
have a wrong channel mapping.

However, adding back just setting the converter channel count even in
no-monitor case is the safest change which at least fixes the stereo
playback regression on SiI1390 codec. Do that.

Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi>
Reported-by: Stephan Raue <stephan@openelec.tv>
Tested-by: Stephan Raue <stephan@openelec.tv>
Cc: <stable@vger.kernel.org> # 3.12+
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-05-05 16:28:10 +02:00
..
aoa
arm
atmel
core Merge branch 'for-next' into for-linus 2014-03-31 12:16:31 +02:00
drivers
firewire
i2c ALSA: cs8427: separate HW initialization 2014-04-03 14:59:48 +02:00
isa ALSA: es18xx driver should use udelay error 2014-04-14 14:27:27 +02:00
mips ALSA: au1x00: use module_platform_driver() 2014-04-09 10:02:14 +02:00
oss sound fixes for 3.15-rc1 2014-04-10 09:19:44 -07:00
parisc
pci ALSA: hda - hdmi: Set converter channel count even without sink 2014-05-05 16:28:10 +02:00
pcmcia
ppc
sh
soc Merge remote-tracking branches 'asoc/fix/intel', 'asoc/fix/jz4740', 'asoc/fix/rcar', 'asoc/fix/tlv320aic31xx' and 'asoc/fix/tlv320aic3x' into asoc-linus 2014-04-22 22:01:07 +01:00
sparc
spi
synth
usb ALSA: usb-audio: work around corrupted TEAC UD-H01 feedback data 2014-05-02 18:21:55 +02:00
ac97_bus.c
Kconfig
last.c
Makefile
sound_core.c
sound_firmware.c