2 * dmaengine.c - Samsung dmaengine wrapper
4 * Author: Mark Brown <broonie@linaro.org>
5 * Copyright 2013 Linaro
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.
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.
18 #include <linux/module.h>
19 #include <sound/core.h>
20 #include <sound/pcm.h>
21 #include <sound/pcm_params.h>
22 #include <sound/dmaengine_pcm.h>
23 #include <sound/soc.h>
27 int samsung_asoc_dma_platform_register(struct device *dev, dma_filter_fn filter,
28 const char *tx, const char *rx,
29 struct device *dma_dev)
31 unsigned int flags = SND_DMAENGINE_PCM_FLAG_COMPAT;
32 struct snd_dmaengine_pcm_config *pcm_conf;
34 pcm_conf = devm_kzalloc(dev, sizeof(*pcm_conf), GFP_KERNEL);
38 pcm_conf->prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config;
39 pcm_conf->compat_filter_fn = filter;
40 pcm_conf->dma_dev = dma_dev;
43 pcm_conf->chan_names[SNDRV_PCM_STREAM_PLAYBACK] = tx;
44 pcm_conf->chan_names[SNDRV_PCM_STREAM_CAPTURE] = rx;
46 flags |= SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME;
49 return devm_snd_dmaengine_pcm_register(dev, pcm_conf, flags);
51 EXPORT_SYMBOL_GPL(samsung_asoc_dma_platform_register);
53 MODULE_AUTHOR("Mark Brown <broonie@linaro.org>");
54 MODULE_DESCRIPTION("Samsung dmaengine ASoC driver");
55 MODULE_LICENSE("GPL");