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
21#include <linux/device.h>
22#include <linux/init.h>
23#include <linux/module.h>
24
25#include <sound/core.h>
26#include <sound/pcm.h>
27#include <sound/soc.h>
28#include <sound/dmaengine_pcm.h>
29
30#include "mxs-pcm.h"
31
32static const struct snd_pcm_hardware snd_mxs_hardware = {
33	.info			= SNDRV_PCM_INFO_MMAP |
34				  SNDRV_PCM_INFO_MMAP_VALID |
35				  SNDRV_PCM_INFO_PAUSE |
36				  SNDRV_PCM_INFO_RESUME |
37				  SNDRV_PCM_INFO_INTERLEAVED |
38				  SNDRV_PCM_INFO_HALF_DUPLEX,
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,
45};
46
47static const struct snd_dmaengine_pcm_config mxs_dmaengine_pcm_config = {
48	.pcm_hardware = &snd_mxs_hardware,
49	.prealloc_buffer_size = 64 * 1024,
50};
51
52int mxs_pcm_platform_register(struct device *dev)
53{
54	return devm_snd_dmaengine_pcm_register(dev, &mxs_dmaengine_pcm_config,
55		SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX);
56}
57EXPORT_SYMBOL_GPL(mxs_pcm_platform_register);
58
59MODULE_LICENSE("GPL");
60