1// SPDX-License-Identifier: GPL-2.0
2//
3// dmaengine.c - Samsung dmaengine wrapper
4//
5// Author: Mark Brown <broonie@linaro.org>
6// Copyright 2013 Linaro
7
8#include <linux/module.h>
9#include <sound/core.h>
10#include <sound/pcm.h>
11#include <sound/pcm_params.h>
12#include <sound/dmaengine_pcm.h>
13#include <sound/soc.h>
14
15#include "dma.h"
16
17int samsung_asoc_dma_platform_register(struct device *dev, dma_filter_fn filter,
18				       const char *tx, const char *rx,
19				       struct device *dma_dev)
20{
21	struct snd_dmaengine_pcm_config *pcm_conf;
22
23	pcm_conf = devm_kzalloc(dev, sizeof(*pcm_conf), GFP_KERNEL);
24	if (!pcm_conf)
25		return -ENOMEM;
26
27	pcm_conf->prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config;
28	pcm_conf->compat_filter_fn = filter;
29	pcm_conf->dma_dev = dma_dev;
30
31	pcm_conf->chan_names[SNDRV_PCM_STREAM_PLAYBACK] = tx;
32	pcm_conf->chan_names[SNDRV_PCM_STREAM_CAPTURE] = rx;
33
34	return devm_snd_dmaengine_pcm_register(dev, pcm_conf,
35				SND_DMAENGINE_PCM_FLAG_COMPAT);
36}
37EXPORT_SYMBOL_GPL(samsung_asoc_dma_platform_register);
38
39MODULE_AUTHOR("Mark Brown <broonie@linaro.org>");
40MODULE_DESCRIPTION("Samsung dmaengine ASoC driver");
41MODULE_LICENSE("GPL");
42