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b1bd7f62cf
These functions were initially added to be able to support some oddball dma
drivers, but all users have been updated to deal with the situation without the
help of snd_dmaengine_pcm_{set,get}_data, so these two functions can be removed.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
48 lines
1.7 KiB
C
48 lines
1.7 KiB
C
/*
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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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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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snd_pcm_uframes_t snd_dmaengine_pcm_pointer_no_residue(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
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