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 <linux/amba/pl08x.h>
21 #include <sound/core.h>
22 #include <sound/pcm.h>
23 #include <sound/pcm_params.h>
24 #include <sound/dmaengine_pcm.h>
25 #include <sound/soc.h>
26 #include <sound/soc-dai.h>
30 #ifdef CONFIG_ARCH_S3C64XX
31 #define filter_fn pl08x_filter_id
33 #define filter_fn NULL
36 static const struct snd_dmaengine_pcm_config samsung_dmaengine_pcm_config
= {
37 .prepare_slave_config
= snd_dmaengine_pcm_prepare_slave_config
,
38 .compat_filter_fn
= filter_fn
,
41 void samsung_asoc_init_dma_data(struct snd_soc_dai
*dai
,
42 struct s3c_dma_params
*playback
,
43 struct s3c_dma_params
*capture
)
45 struct snd_dmaengine_dai_dma_data
*playback_data
= NULL
;
46 struct snd_dmaengine_dai_dma_data
*capture_data
= NULL
;
49 playback_data
= &playback
->dma_data
;
50 playback_data
->filter_data
= (void *)playback
->channel
;
51 playback_data
->chan_name
= playback
->ch_name
;
52 playback_data
->addr
= playback
->dma_addr
;
53 playback_data
->addr_width
= playback
->dma_size
;
56 capture_data
= &capture
->dma_data
;
57 capture_data
->filter_data
= (void *)capture
->channel
;
58 capture_data
->chan_name
= capture
->ch_name
;
59 capture_data
->addr
= capture
->dma_addr
;
60 capture_data
->addr_width
= capture
->dma_size
;
63 snd_soc_dai_init_dma_data(dai
, playback_data
, capture_data
);
65 EXPORT_SYMBOL_GPL(samsung_asoc_init_dma_data
);
67 int samsung_asoc_dma_platform_register(struct device
*dev
)
69 return devm_snd_dmaengine_pcm_register(dev
,
70 &samsung_dmaengine_pcm_config
,
71 SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME
|
72 SND_DMAENGINE_PCM_FLAG_COMPAT
);
74 EXPORT_SYMBOL_GPL(samsung_asoc_dma_platform_register
);
76 MODULE_AUTHOR("Mark Brown <broonie@linaro.org>");
77 MODULE_DESCRIPTION("Samsung dmaengine ASoC driver");
78 MODULE_LICENSE("GPL");