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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> | |
d37bdf73 MB |
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> | |
d37bdf73 MB |
24 | |
25 | #include "dma.h" | |
26 | ||
42a74e77 SN |
27 | int samsung_asoc_dma_platform_register(struct device *dev, dma_filter_fn filter, |
28 | const char *tx, const char *rx) | |
d37bdf73 | 29 | { |
42a74e77 | 30 | unsigned int flags = SND_DMAENGINE_PCM_FLAG_COMPAT; |
42a74e77 SN |
31 | struct snd_dmaengine_pcm_config *pcm_conf; |
32 | ||
33 | pcm_conf = devm_kzalloc(dev, sizeof(*pcm_conf), GFP_KERNEL); | |
34 | if (!pcm_conf) | |
35 | return -ENOMEM; | |
36 | ||
37 | pcm_conf->prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config; | |
38 | pcm_conf->compat_filter_fn = filter; | |
39 | ||
40 | if (dev->of_node) { | |
41 | pcm_conf->chan_names[SNDRV_PCM_STREAM_PLAYBACK] = tx; | |
42 | pcm_conf->chan_names[SNDRV_PCM_STREAM_CAPTURE] = rx; | |
43 | } else { | |
44 | flags |= SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME; | |
45 | } | |
9bdca822 | 46 | |
42a74e77 | 47 | return devm_snd_dmaengine_pcm_register(dev, pcm_conf, flags); |
d37bdf73 MB |
48 | } |
49 | EXPORT_SYMBOL_GPL(samsung_asoc_dma_platform_register); | |
50 | ||
d37bdf73 MB |
51 | MODULE_AUTHOR("Mark Brown <broonie@linaro.org>"); |
52 | MODULE_DESCRIPTION("Samsung dmaengine ASoC driver"); | |
53 | MODULE_LICENSE("GPL"); |