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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> | |
19 | #include <linux/amba/pl08x.h> | |
87b132bc | 20 | #include <linux/platform_data/dma-s3c24xx.h> |
d37bdf73 MB |
21 | |
22 | #include <sound/core.h> | |
23 | #include <sound/pcm.h> | |
24 | #include <sound/pcm_params.h> | |
25 | #include <sound/dmaengine_pcm.h> | |
26 | #include <sound/soc.h> | |
27 | #include <sound/soc-dai.h> | |
28 | ||
29 | #include "dma.h" | |
30 | ||
d37bdf73 MB |
31 | void samsung_asoc_init_dma_data(struct snd_soc_dai *dai, |
32 | struct s3c_dma_params *playback, | |
33 | struct s3c_dma_params *capture) | |
34 | { | |
35 | struct snd_dmaengine_dai_dma_data *playback_data = NULL; | |
36 | struct snd_dmaengine_dai_dma_data *capture_data = NULL; | |
37 | ||
38 | if (playback) { | |
39 | playback_data = &playback->dma_data; | |
b9a1a743 | 40 | playback_data->filter_data = playback->slave; |
d37bdf73 MB |
41 | playback_data->chan_name = playback->ch_name; |
42 | playback_data->addr = playback->dma_addr; | |
43 | playback_data->addr_width = playback->dma_size; | |
44 | } | |
45 | if (capture) { | |
46 | capture_data = &capture->dma_data; | |
b9a1a743 | 47 | capture_data->filter_data = capture->slave; |
d37bdf73 MB |
48 | capture_data->chan_name = capture->ch_name; |
49 | capture_data->addr = capture->dma_addr; | |
50 | capture_data->addr_width = capture->dma_size; | |
51 | } | |
52 | ||
53 | snd_soc_dai_init_dma_data(dai, playback_data, capture_data); | |
54 | } | |
55 | EXPORT_SYMBOL_GPL(samsung_asoc_init_dma_data); | |
56 | ||
42a74e77 SN |
57 | int samsung_asoc_dma_platform_register(struct device *dev, dma_filter_fn filter, |
58 | const char *tx, const char *rx) | |
d37bdf73 | 59 | { |
42a74e77 SN |
60 | unsigned int flags = SND_DMAENGINE_PCM_FLAG_COMPAT; |
61 | ||
62 | struct snd_dmaengine_pcm_config *pcm_conf; | |
63 | ||
64 | pcm_conf = devm_kzalloc(dev, sizeof(*pcm_conf), GFP_KERNEL); | |
65 | if (!pcm_conf) | |
66 | return -ENOMEM; | |
67 | ||
68 | pcm_conf->prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config; | |
69 | pcm_conf->compat_filter_fn = filter; | |
70 | ||
71 | if (dev->of_node) { | |
72 | pcm_conf->chan_names[SNDRV_PCM_STREAM_PLAYBACK] = tx; | |
73 | pcm_conf->chan_names[SNDRV_PCM_STREAM_CAPTURE] = rx; | |
74 | } else { | |
75 | flags |= SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME; | |
76 | } | |
9bdca822 | 77 | |
42a74e77 | 78 | return devm_snd_dmaengine_pcm_register(dev, pcm_conf, flags); |
d37bdf73 MB |
79 | } |
80 | EXPORT_SYMBOL_GPL(samsung_asoc_dma_platform_register); | |
81 | ||
d37bdf73 MB |
82 | MODULE_AUTHOR("Mark Brown <broonie@linaro.org>"); |
83 | MODULE_DESCRIPTION("Samsung dmaengine ASoC driver"); | |
84 | MODULE_LICENSE("GPL"); |