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, size: 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, config: 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 |