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Viewing changes to include/sound/dmaengine_pcm.h

  • Committer: Package Import Robot
  • Author(s): Andy Whitcroft, Andy Whitcroft
  • Date: 2012-06-21 09:16:38 UTC
  • Revision ID: package-import@ubuntu.com-20120621091638-gubhv4nox8xez1ct
Tags: 3.5.0-1.1
[ Andy Whitcroft]

* Rebuild lowlatency against Ubuntu-3.5.0-1.1
* All new configuration system to allow configuration deltas to be
  exposed via debian.lowlatency/config-delta

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include/sound/dmaengine_pcm.h
 
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/*
 
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 *  Copyright (C) 2012, Analog Devices Inc.
 
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 *      Author: Lars-Peter Clausen <lars@metafoo.de>
 
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 *
 
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 *  This program is free software; you can redistribute it and/or modify it
 
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 *  under  the terms of the GNU General  Public License as published by the
 
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 *  Free Software Foundation;  either version 2 of the License, or (at your
 
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 *  option) any later version.
 
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 *
 
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 *  You should have received a copy of the GNU General Public License along
 
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 *  with this program; if not, write to the Free Software Foundation, Inc.,
 
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 *  675 Mass Ave, Cambridge, MA 02139, USA.
 
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 *
 
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 */
 
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#ifndef __SOUND_DMAENGINE_PCM_H__
 
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#define __SOUND_DMAENGINE_PCM_H__
 
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#include <sound/pcm.h>
 
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#include <linux/dmaengine.h>
 
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/**
 
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 * snd_pcm_substream_to_dma_direction - Get dma_transfer_direction for a PCM
 
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 *   substream
 
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 * @substream: PCM substream
 
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 */
 
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static inline enum dma_transfer_direction
 
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snd_pcm_substream_to_dma_direction(const struct snd_pcm_substream *substream)
 
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{
 
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        if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 
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                return DMA_MEM_TO_DEV;
 
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        else
 
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                return DMA_DEV_TO_MEM;
 
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}
 
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void snd_dmaengine_pcm_set_data(struct snd_pcm_substream *substream, void *data);
 
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void *snd_dmaengine_pcm_get_data(struct snd_pcm_substream *substream);
 
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int snd_hwparams_to_dma_slave_config(const struct snd_pcm_substream *substream,
 
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        const struct snd_pcm_hw_params *params, struct dma_slave_config *slave_config);
 
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int snd_dmaengine_pcm_trigger(struct snd_pcm_substream *substream, int cmd);
 
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snd_pcm_uframes_t snd_dmaengine_pcm_pointer(struct snd_pcm_substream *substream);
 
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int snd_dmaengine_pcm_open(struct snd_pcm_substream *substream,
 
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        dma_filter_fn filter_fn, void *filter_data);
 
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int snd_dmaengine_pcm_close(struct snd_pcm_substream *substream);
 
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struct dma_chan *snd_dmaengine_pcm_get_chan(struct snd_pcm_substream *substream);
 
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#endif