linux_dsm_epyc7002/sound/soc/amd
Akshu Agrawal 5a8117840a
ASoC: amd :High hw_level while simultaneous capture
Simultaneous capture on dmic and headset mic is having
issue with high hw_level being reported.

Issue Can be reproduced by:
arecord -D hw:2,0 -f dat -d 60 /tmp/test0 &
arecord -D hw:2,2 -f dat -d 60 /tmp/test1 &
cat /proc/asound/card2/pcm?c/sub0/status

Actual issue is :
When we open one capture stream on one instance lets say I2S_SP and then
once again if we open other capture on other instance lets say I2S_BT while
first capture is in progress and when we try to read the status of both
running instances by below command cat /proc/asound/card2/pcm?c/sub0/status
we observe that avail_max is being doubled on first opened
capture(I2S_SP in the example).

This is because our previous implementation was like when any instance is
opened it gets initialized in dma_open irrespective of on what instance it
called open.

For example:
First I2S_SP called opened it initializes both SP/BT capture streams
irrespective of on which instance the stream opened.next time I2S_BT
called opened and it initializes both SP/BT this corrupts the behaviour .

So with this patch the stream gets initialized only on specific instance
when ever it gets opened calls hw_params.

This rectifies the issue.

Signed-off-by: Ravulapati Vishnu vardhan rao <Vishnuvardhanrao.Ravulapati@amd.com>
Signed-off-by: Akshu Agrawal <akshu.agrawal@amd.com>
Link: https://lore.kernel.org/r/20200506102602.140790-1-akshu.agrawal@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-05-06 14:43:33 +01:00
..
include ASoC: AMD : add ACP 2.2 register headers 2016-01-10 12:44:10 +00:00
raven ASoC: amd :High hw_level while simultaneous capture 2020-05-06 14:43:33 +01:00
acp3x-rt5682-max9836.c ASoC: amd: Fix button configuration 2020-04-14 12:59:13 +01:00
acp-da7219-max98357a.c ASoC: amd: use asoc_rtd_to_cpu() / asoc_rtd_to_codec() macro for DAI pointer 2020-03-27 14:44:30 +00:00
acp-pcm-dma.c ASoC: amd: Drop superfluous ioctl PCM ops 2019-12-11 15:55:28 +00:00
acp-rt5645.c ASoC: amd: use asoc_rtd_to_cpu() / asoc_rtd_to_codec() macro for DAI pointer 2020-03-27 14:44:30 +00:00
acp.h ASoC: use DMA addr rather than CPU pa for acp_audio_dma 2018-12-06 12:53:04 +00:00
Kconfig ASoC: amd: AMD RV RT5682 should depends on CROS_EC 2020-03-03 14:16:22 +00:00
Makefile ASoC: amd: Add machine driver for Raven based platform 2020-02-26 18:14:13 +00:00