text: /*
   * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
   *
   * Based on sound/soc/imx/imx-pcm-dma-mx2.c
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   *
   * 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.
   *
   * You should have received a copy of the GNU General Public License along
   * with this program; if not, write to the Free Software Foundation, Inc.,
   * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
   */
  
  #include <linux/device.h>
  #include <linux/init.h>
  #include <linux/module.h>
  
  #include <sound/core.h>
  #include <sound/pcm.h>
  #include <sound/soc.h>
  #include <sound/dmaengine_pcm.h>
  
  #include "mxs-pcm.h"
  
  static const struct snd_pcm_hardware snd_mxs_hardware = {
  	.info			= SNDRV_PCM_INFO_MMAP |
  				  SNDRV_PCM_INFO_MMAP_VALID |
  				  SNDRV_PCM_INFO_PAUSE |
  				  SNDRV_PCM_INFO_RESUME |
  				  SNDRV_PCM_INFO_INTERLEAVED |
  				  SNDRV_PCM_INFO_HALF_DUPLEX,
  	.period_bytes_min	= 32,
  	.period_bytes_max	= 8192,
  	.periods_min		= 1,
  	.periods_max		= 52,
  	.buffer_bytes_max	= 64 * 1024,
  	.fifo_size		= 32,
  };
  
  static const struct snd_dmaengine_pcm_config mxs_dmaengine_pcm_config = {
  	.pcm_hardware = &snd_mxs_hardware,
  	.prealloc_buffer_size = 64 * 1024,
  };
  
  int mxs_pcm_platform_register(struct device *dev)
  {
  	return devm_snd_dmaengine_pcm_register(dev, &mxs_dmaengine_pcm_config,
  		SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX);
  }
  EXPORT_SYMBOL_GPL(mxs_pcm_platform_register);
  
  MODULE_LICENSE("GPL");
  