ASoC: mediatek: Use current HW pointer for pointer callback

Browse source

Previously we recorded "last interrupt position" and used it in
pointer callback. This is not correct implementation, and it causes
underruns when user space monitors buffer level to decide when to
send next data chunk in low latency application.

Remove position recording in IRQ handler and also hw_ptr in
struct mtk_afe_memif used to record that, and let pointer callback
reports current HW pointer instead.

Signed-off-by: Koro Chen <koro.chen@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

...

This commit is contained in:

Koro Chen 2015-12-03 15:53:28 +08:00 • committed by Mark Brown

parent b45e68df06

commit 8d6f88ce96

2 changed files with 11 additions and 12 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

1

sound/soc/mediatek/mtk-afe-common.h

View file

22

sound/soc/mediatek/mtk-afe-pcm.c

View file