linux_dsm_epyc7002/sound/hda
Rander Wang 130bce3afb ALSA: hdac: clear link output stream mapping
Fix potential DMA hang upon starting playback on devices in HDA mode
on Intel platforms (Gemini Lake/Whiskey Lake/Comet Lake/Ice Lake). It
doesn't affect platforms before Gemini Lake or any Intel device in
non-HDA mode.

The reset value for the LOSDIV register is all output streams valid.
Clear this register to invalidate non-existent streams when the bus
is powered up.

Signed-off-by: Rander Wang <rander.wang@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20190930142945.7805-1-pierre-louis.bossart@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-10-07 03:58:48 +02:00
..
ext
array.c
hda_bus_type.c
hdac_bus.c
hdac_component.c
hdac_controller.c
hdac_device.c
hdac_i915.c
hdac_regmap.c
hdac_stream.c
hdac_sysfs.c
hdmi_chmap.c
intel-nhlt.c
Kconfig
local.h
Makefile
trace.c
trace.h