Stephan Gerhold 7f2430cda8 ASoC: qcom: q6asm-dai: Add SNDRV_PCM_INFO_BATCH flag ... At the moment, playing audio with PulseAudio with the qdsp6 driver results in distorted sound. It seems like its timer-based scheduling does not work properly with qdsp6 since setting tsched=0 in the PulseAudio configuration avoids the issue. Apparently this happens when the pointer() callback is not accurate enough. There is a SNDRV_PCM_INFO_BATCH flag that can be used to stop PulseAudio from using timer-based scheduling by default. According to https://www.alsa-project.org/pipermail/alsa-devel/2014-March/073816.html: The flag is being used in the sense explained in the previous audio meeting -- the data transfer granularity isn't fine enough but aligned to the period size (or less). q6asm-dai reports the position as multiple of prtd->pcm_count = snd_pcm_lib_period_bytes(substream) so it indeed just a multiple of the period size. Therefore adding the flag here seems appropriate and makes audio work out of the box. Fixes: 2a9e92d371 ("ASoC: qdsp6: q6asm: Add q6asm dai driver") Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20200330175210.47518-1-stephan@gerhold.net Signed-off-by: Mark Brown <broonie@kernel.org>		2020-03-31 19:23:54 +01:00
..
Makefile
q6adm.c
q6adm.h
q6afe-dai.c	ASoC: qdsp6: q6afe-dai: Add missing Slimbus0 audio route	2019-07-04 00:03:10 +01:00
q6afe.c
q6afe.h
q6asm-dai.c	ASoC: qcom: q6asm-dai: Add SNDRV_PCM_INFO_BATCH flag	2020-03-31 19:23:54 +01:00
q6asm.c	ASoC: qcom: q6asm: add support for alac and ape configs	2020-03-16 17:52:10 +00:00
q6asm.h	ASoC: qcom: q6asm: add support for alac and ape configs	2020-03-16 17:52:10 +00:00
q6core.c
q6core.h
q6dsp-common.c
q6dsp-common.h
q6dsp-errno.h
q6routing.c	ASoC: qcom: use asoc_rtd_to_cpu() / asoc_rtd_to_codec() macro for DAI pointer	2020-03-27 14:44:44 +00:00
q6routing.h