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Commit a22f33b0 authored by Lars-Peter Clausen's avatar Lars-Peter Clausen Committed by Mark Brown
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ASoC: generic-dmaengine-pcm: Set BATCH flag when residue reporting is not supported 



For dmaengine drivers which do not support transfer residue reporting we update
the PCM pointer with period granularity. Set the SNDRV_PCM_INFO_BATCH flag in
this case to let userspace know about this.

Signed-off-by: default avatarLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent 21585ee8

sound/soc/soc-generic-dmaengine-pcm.c

+3 −0
Original line number Diff line number Diff line
@@ -137,6 +137,9 @@ static int dmaengine_pcm_set_runtime_hwparams(struct snd_pcm_substream *substrea 
	hw.buffer_bytes_max = SIZE_MAX;

	hw.fifo_size = dma_data->fifo_size;



	if (pcm->flags & SND_DMAENGINE_PCM_FLAG_NO_RESIDUE)

		hw.info |= SNDRV_PCM_INFO_BATCH;



	ret = dma_get_slave_caps(chan, &dma_caps);

	if (ret == 0) {

		if (dma_caps.cmd_pause)