From a22f33b00346f26d29483cdacdbf26df7947ef23 Mon Sep 17 00:00:00 2001
From: Lars-Peter Clausen <lars@metafoo.de>
Date: Sat, 30 Nov 2013 18:00:45 +0100
Subject: 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>
---
sound/soc/soc-generic-dmaengine-pcm.c | 3 +++
1 file changed, 3 insertions(+)
(limited to 'sound/soc')
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)
--
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