text: /*
   * 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 <linux/amba/pl08x.h>
  #include <linux/platform_data/dma-s3c24xx.h>
  
  #include <sound/core.h>
  #include <sound/pcm.h>
  #include <sound/pcm_params.h>
  #include <sound/dmaengine_pcm.h>
  #include <sound/soc.h>
  #include <sound/soc-dai.h>
  
  #include "dma.h"
  
  static struct snd_dmaengine_pcm_config samsung_dmaengine_pcm_config = {
  	.prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
  };
  
  void samsung_asoc_init_dma_data(struct snd_soc_dai *dai,
  				struct s3c_dma_params *playback,
  				struct s3c_dma_params *capture)
  {
  	struct snd_dmaengine_dai_dma_data *playback_data = NULL;
  	struct snd_dmaengine_dai_dma_data *capture_data = NULL;
  
  	if (playback) {
  		playback_data = &playback->dma_data;
  		playback_data->filter_data = playback->slave;
  		playback_data->chan_name = playback->ch_name;
  		playback_data->addr = playback->dma_addr;
  		playback_data->addr_width = playback->dma_size;
  	}
  	if (capture) {
  		capture_data = &capture->dma_data;
  		capture_data->filter_data = capture->slave;
  		capture_data->chan_name = capture->ch_name;
  		capture_data->addr = capture->dma_addr;
  		capture_data->addr_width = capture->dma_size;
  	}
  
  	snd_soc_dai_init_dma_data(dai, playback_data, capture_data);
  }
  EXPORT_SYMBOL_GPL(samsung_asoc_init_dma_data);
  
  int samsung_asoc_dma_platform_register(struct device *dev,
  				       dma_filter_fn filter)
  {
  	samsung_dmaengine_pcm_config.compat_filter_fn = filter;
  
  	return devm_snd_dmaengine_pcm_register(dev,
  			&samsung_dmaengine_pcm_config,
  			SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME |
  			SND_DMAENGINE_PCM_FLAG_COMPAT);
  }
  EXPORT_SYMBOL_GPL(samsung_asoc_dma_platform_register);
  
  MODULE_AUTHOR("Mark Brown <broonie@linaro.org>");
  MODULE_DESCRIPTION("Samsung dmaengine ASoC driver");
  MODULE_LICENSE("GPL");
  