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/*
* dmaengine.c - Samsung dmaengine wrapper
*
* Author: Mark Brown <broonie@linaro.org>
* Copyright 2013 Linaro
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
*/
#include <linux/module.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/dmaengine_pcm.h>
#include <sound/soc.h>
#include "dma.h"
int samsung_asoc_dma_platform_register(struct device *dev, dma_filter_fn filter,
const char *tx, const char *rx,
struct device *dma_dev)
{
unsigned int flags = SND_DMAENGINE_PCM_FLAG_COMPAT;
struct snd_dmaengine_pcm_config *pcm_conf;
pcm_conf = devm_kzalloc(dev, sizeof(*pcm_conf), GFP_KERNEL);
if (!pcm_conf)
return -ENOMEM;
pcm_conf->prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config;
pcm_conf->compat_filter_fn = filter;
pcm_conf->dma_dev = dma_dev;
if (dev->of_node) {
pcm_conf->chan_names[SNDRV_PCM_STREAM_PLAYBACK] = tx;
pcm_conf->chan_names[SNDRV_PCM_STREAM_CAPTURE] = rx;
} else {
flags |= SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME;
}
return devm_snd_dmaengine_pcm_register(dev, pcm_conf, flags);
}
EXPORT_SYMBOL_GPL(samsung_asoc_dma_platform_register);
MODULE_AUTHOR("Mark Brown <broonie@linaro.org>");
MODULE_DESCRIPTION("Samsung dmaengine ASoC driver");
MODULE_LICENSE("GPL");
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