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authorLars-Peter Clausen <lars@metafoo.de>2015-04-27 12:44:25 +0200
committerMark Brown <broonie@kernel.org>2015-04-27 19:26:07 +0100
commitacde50a7bf1fd6ae0baa4402f0a02c4b1bd4c990 (patch)
tree84e35f0af077194c30db469497827332ddd673ea /include/sound/dmaengine_pcm.h
parentb787f68c36d49bb1d9236f403813641efa74a031 (diff)
downloadlinux-acde50a7bf1fd6ae0baa4402f0a02c4b1bd4c990.tar.bz2
ASoC: dmaengine_pcm: Make FLAG_NO_RESIDUE internal
Whether residue can be reported or not is not a property of the audio controller but of the DMA controller. The FLAG_NO_RESIDUE was initially added when the DMAengine framework had no support for describing the residue reporting capabilities of the controller. Support for this was added quite a while ago and recently the DMAengine framework started to complain if a driver does not describe its capabilities and a lot of patches have been merged that add support for this where it was missing. So it should be safe to assume that driver on actively used platforms properly implement the DMA capabilities API. This patch makes the FLAG_NO_RESIDUE internal and no longer allows audio controller drivers to manually set the flag. If a DMA driver against expectations does not support reporting its capabilities for now the generic DMAengine PCM driver will now emit a warning and simply assume that residue reporting is not supported. In the future this might be changed to aborting with an error. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/sound/dmaengine_pcm.h')
-rw-r--r--include/sound/dmaengine_pcm.h5
1 files changed, 0 insertions, 5 deletions
diff --git a/include/sound/dmaengine_pcm.h b/include/sound/dmaengine_pcm.h
index eb73a3a39ec2..f86ef5ea9b01 100644
--- a/include/sound/dmaengine_pcm.h
+++ b/include/sound/dmaengine_pcm.h
@@ -91,11 +91,6 @@ void snd_dmaengine_pcm_set_config_from_dai_data(
*/
#define SND_DMAENGINE_PCM_FLAG_NO_DT BIT(1)
/*
- * The platforms dmaengine driver does not support reporting the amount of
- * bytes that are still left to transfer.
- */
-#define SND_DMAENGINE_PCM_FLAG_NO_RESIDUE BIT(2)
-/*
* The PCM is half duplex and the DMA channel is shared between capture and
* playback.
*/