[mirror_ubuntu-zesty-kernel.git] / sound / soc / mxs / mxs-pcm.c

/*
 * 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");
Commit	Line	Data
ed6e1d04 DA	1	/*
	2	* Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
	3	*
	4	* Based on sound/soc/imx/imx-pcm-dma-mx2.c
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License along
	17	* with this program; if not, write to the Free Software Foundation, Inc.,
	18	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	19	*/
	20
ed6e1d04	21	#include <linux/device.h>
ed6e1d04	22	#include <linux/init.h>
ed6e1d04	23	#include <linux/module.h>
ed6e1d04 DA	24
ed6e1d04 DA	25	#include <sound/core.h>
ed6e1d04	26	#include <sound/pcm.h>
ed6e1d04	27	#include <sound/soc.h>
016ab467	28	#include <sound/dmaengine_pcm.h>
ed6e1d04	29
ed6e1d04 DA	30	#include "mxs-pcm.h"
ed6e1d04 DA	31
a8956908	32	static const struct snd_pcm_hardware snd_mxs_hardware = {
ed6e1d04 DA	33	.info = SNDRV_PCM_INFO_MMAP \|
	34	SNDRV_PCM_INFO_MMAP_VALID \|
	35	SNDRV_PCM_INFO_PAUSE \|
	36	SNDRV_PCM_INFO_RESUME \|
57364f9a LPC	37	SNDRV_PCM_INFO_INTERLEAVED \|
57364f9a LPC	38	SNDRV_PCM_INFO_HALF_DUPLEX,
ed6e1d04 DA	39	.period_bytes_min = 32,
	40	.period_bytes_max = 8192,
	41	.periods_min = 1,
	42	.periods_max = 52,
	43	.buffer_bytes_max = 64 * 1024,
	44	.fifo_size = 32,
ed6e1d04 DA	45	};
ed6e1d04 DA	46
a8956908 LPC	47	static const struct snd_dmaengine_pcm_config mxs_dmaengine_pcm_config = {
a8956908 LPC	48	.pcm_hardware = &snd_mxs_hardware,
a8956908	49	.prealloc_buffer_size = 64 * 1024,
ed6e1d04 DA	50	};
ed6e1d04 DA	51
fd582736	52	int mxs_pcm_platform_register(struct device *dev)
ed6e1d04	53	{
2650bc4f	54	return devm_snd_dmaengine_pcm_register(dev, &mxs_dmaengine_pcm_config,
a8956908	55	SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX);
ed6e1d04	56	}
4da3fe78	57	EXPORT_SYMBOL_GPL(mxs_pcm_platform_register);
ed6e1d04	58
06c8eb9a	59	MODULE_LICENSE("GPL");