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(parent: a74a821) | patch
ALSA: hda - Fix playback noise with 24/32 bit sample size on BXT
authorLu, Han <han.lu@intel.com>
Mon, 7 Dec 2015 07:59:13 +0000 (15:59 +0800)
committerTakashi Iwai <tiwai@suse.de>
Mon, 7 Dec 2015 08:04:44 +0000 (09:04 +0100)
commit7c23b7c1996597dd9d60bb282fb5fa1be6ebd18b
treec88af19892551e1e0c3bc8171ffcba1b15c7176ftree | snapshot
parenta74a821624c0c75388a193337babd17a8c02c740commit | diff
ALSA: hda - Fix playback noise with 24/32 bit sample size on BXT

In BXT-P A0, HD-Audio DMA requests is later than expected,
and makes an audio stream sensitive to system latencies when
24/32 bits are playing.
Adjusting threshold of DMA fifo to force the DMA request
sooner to improve latency tolerance at the expense of power.

v2: move Intel specific code to hda_intel.c

Signed-off-by: Lu, Han <han.lu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
include/sound/hda_register.h diff | blob | history
sound/pci/hda/hda_intel.c diff | blob | history
Domain: System / Kernel;