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authorLars-Peter Clausen <lars@metafoo.de>2013-04-15 21:19:55 +0400
committerMark Brown <broonie@opensource.wolfsonmicro.com>2013-04-17 17:25:56 +0400
commit610f780050090db1af024bd060f819478a656cd0 (patch)
treeb45de808e58ddf8c879aa1aca49d6dc1629475a3 /include/sound/dmaengine_pcm.h
parent11a8576a0a3f153784fc4fca28e6fcee83531135 (diff)
downloadlinux-610f780050090db1af024bd060f819478a656cd0.tar.xz
ASoC: dmaengine-pcm: Add support for platforms which can't report residue
Unfortunately there are still quite a few platforms with a dmaengine driver which do not support reporting the number of bytes left to transfer. If we want to support these platforms in the generic dmaengine PCM driver we have. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Tested-by: Stephen Warren <swarren@nvidia.com> Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'include/sound/dmaengine_pcm.h')
-rw-r--r--include/sound/dmaengine_pcm.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/sound/dmaengine_pcm.h b/include/sound/dmaengine_pcm.h
index 1a7897ab3572..e7052862d6b2 100644
--- a/include/sound/dmaengine_pcm.h
+++ b/include/sound/dmaengine_pcm.h
@@ -86,6 +86,11 @@ void snd_dmaengine_pcm_set_config_from_dai_data(
* makes sense if SND_DMAENGINE_PCM_FLAG_COMPAT is set as well.
*/
#define SND_DMAENGINE_PCM_FLAG_NO_DT BIT(1)
+/*
+ * The platforms dmaengine driver does not support reporting the ammount of
+ * bytes that are still left to transfer.
+ */
+#define SND_DMAENGINE_PCM_FLAG_NO_RESIDUE BIT(2)
/**
* struct snd_dmaengine_pcm_config - Configuration data for dmaengine based PCM