1/*
2 * dmaengine.c - Samsung dmaengine wrapper
3 *
4 * Author: Mark Brown <broonie@linaro.org>
5 * Copyright 2013 Linaro
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * version 2 as published by the Free Software Foundation.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * General Public License for more details.
15 *
16 */
17
18#include <linux/module.h>
19#include <linux/amba/pl08x.h>
20#include <linux/platform_data/dma-s3c24xx.h>
21
22#include <sound/core.h>
23#include <sound/pcm.h>
24#include <sound/pcm_params.h>
25#include <sound/dmaengine_pcm.h>
26#include <sound/soc.h>
27#include <sound/soc-dai.h>
28
29#include "dma.h"
30
31#ifdef CONFIG_ARCH_S3C64XX
32#define filter_fn pl08x_filter_id
33#elif defined(CONFIG_ARCH_S3C24XX)
34#define filter_fn s3c24xx_dma_filter
35#else
36#define filter_fn NULL
37#endif
38
39static const struct snd_dmaengine_pcm_config samsung_dmaengine_pcm_config = {
40	.prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
41	.compat_filter_fn = filter_fn,
42};
43
44void samsung_asoc_init_dma_data(struct snd_soc_dai *dai,
45				struct s3c_dma_params *playback,
46				struct s3c_dma_params *capture)
47{
48	struct snd_dmaengine_dai_dma_data *playback_data = NULL;
49	struct snd_dmaengine_dai_dma_data *capture_data = NULL;
50
51	if (playback) {
52		playback_data = &playback->dma_data;
53		playback_data->filter_data = playback->slave;
54		playback_data->chan_name = playback->ch_name;
55		playback_data->addr = playback->dma_addr;
56		playback_data->addr_width = playback->dma_size;
57	}
58	if (capture) {
59		capture_data = &capture->dma_data;
60		capture_data->filter_data = capture->slave;
61		capture_data->chan_name = capture->ch_name;
62		capture_data->addr = capture->dma_addr;
63		capture_data->addr_width = capture->dma_size;
64	}
65
66	snd_soc_dai_init_dma_data(dai, playback_data, capture_data);
67}
68EXPORT_SYMBOL_GPL(samsung_asoc_init_dma_data);
69
70int samsung_asoc_dma_platform_register(struct device *dev)
71{
72	return devm_snd_dmaengine_pcm_register(dev,
73			&samsung_dmaengine_pcm_config,
74			SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME |
75			SND_DMAENGINE_PCM_FLAG_COMPAT);
76}
77EXPORT_SYMBOL_GPL(samsung_asoc_dma_platform_register);
78
79MODULE_AUTHOR("Mark Brown <broonie@linaro.org>");
80MODULE_DESCRIPTION("Samsung dmaengine ASoC driver");
81MODULE_LICENSE("GPL");
82