2 * Copyright (c) 2018 Rockchip Electronics Co. Ltd.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
9 #include <linux/device.h>
10 #include <linux/init.h>
11 #include <linux/module.h>
13 #include <sound/core.h>
14 #include <sound/pcm.h>
15 #include <sound/soc.h>
16 #include <sound/dmaengine_pcm.h>
18 #include "rockchip_pcm.h"
20 static const struct snd_pcm_hardware snd_rockchip_hardware
= {
21 .info
= SNDRV_PCM_INFO_MMAP
|
22 SNDRV_PCM_INFO_MMAP_VALID
|
23 SNDRV_PCM_INFO_PAUSE
|
24 SNDRV_PCM_INFO_RESUME
|
25 SNDRV_PCM_INFO_INTERLEAVED
,
26 .period_bytes_min
= 32,
27 .period_bytes_max
= 8192,
30 .buffer_bytes_max
= 64 * 1024,
34 static const struct snd_dmaengine_pcm_config rk_dmaengine_pcm_config
= {
35 .pcm_hardware
= &snd_rockchip_hardware
,
36 .prealloc_buffer_size
= 32 * 1024,
39 int rockchip_pcm_platform_register(struct device
*dev
)
41 return devm_snd_dmaengine_pcm_register(dev
, &rk_dmaengine_pcm_config
,
42 SND_DMAENGINE_PCM_FLAG_COMPAT
);
44 EXPORT_SYMBOL_GPL(rockchip_pcm_platform_register
);
46 MODULE_LICENSE("GPL v2");