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
17 int 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 }
37 EXPORT_SYMBOL_GPL(samsung_asoc_dma_platform_register);
38
39 MODULE_AUTHOR("Mark Brown <broonie@linaro.org>");
40 MODULE_DESCRIPTION("Samsung dmaengine ASoC driver");
41 MODULE_LICENSE("GPL");
42
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.