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authorLars-Peter Clausen <lars@metafoo.de>2013-11-30 21:00:45 +0400
committerMark Brown <broonie@linaro.org>2013-12-02 15:24:31 +0400
commita22f33b00346f26d29483cdacdbf26df7947ef23 (patch)
treeb46614d33fabb80ca7982929cb3f2a63547a4b7e /sound/soc/soc-generic-dmaengine-pcm.c
parent21585ee848078b12d0d1a513e93936bf96b444a0 (diff)
downloadlinux-a22f33b00346f26d29483cdacdbf26df7947ef23.tar.xz
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: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'sound/soc/soc-generic-dmaengine-pcm.c')
-rw-r--r--sound/soc/soc-generic-dmaengine-pcm.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c
index cbc9c96ce1f4..87e86357124e 100644
--- a/sound/soc/soc-generic-dmaengine-pcm.c
+++ b/sound/soc/soc-generic-dmaengine-pcm.c
@@ -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)