Previously support was added to allow streams to be stopped and started again without the DSP being power cycled and this was done by clearing the buffer state in trigger start. Another supported use-case is using the DSP for a trigger event then opening the compressed stream later to receive the audio, unfortunately clearing the buffer state in trigger start destroys the data received from such a trigger. Correct this issue by moving the call to wm_adsp_buffer_clear to be in trigger stop instead.
Fixes: 61fc060c40e6 ("ASoC: wm_adsp: Support streams which can start/stop with DSP active") Signed-off-by: Charles Keepax ckeepax@opensource.cirrus.com --- sound/soc/codecs/wm_adsp.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c index b93fdc8d2d6fb..0de36b7eeeb22 100644 --- a/sound/soc/codecs/wm_adsp.c +++ b/sound/soc/codecs/wm_adsp.c @@ -3571,8 +3571,6 @@ int wm_adsp_compr_trigger(struct snd_compr_stream *stream, int cmd) if (ret < 0) break;
- wm_adsp_buffer_clear(compr->buf); - /* Trigger the IRQ at one fragment of data */ ret = wm_adsp_buffer_write(compr->buf, HOST_BUFFER_FIELD(high_water_mark), @@ -3584,6 +3582,7 @@ int wm_adsp_compr_trigger(struct snd_compr_stream *stream, int cmd) } break; case SNDRV_PCM_TRIGGER_STOP: + wm_adsp_buffer_clear(compr->buf); break; default: ret = -EINVAL;