1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2018 Rockchip Electronics Co. Ltd.
6 #include <linux/device.h>
7 #include <linux/init.h>
8 #include <linux/module.h>
10 #include <sound/core.h>
11 #include <sound/pcm.h>
12 #include <sound/soc.h>
13 #include <sound/dmaengine_pcm.h>
15 #include "rockchip_pcm.h"
17 static const struct snd_pcm_hardware snd_rockchip_hardware
= {
18 .info
= SNDRV_PCM_INFO_MMAP
|
19 SNDRV_PCM_INFO_MMAP_VALID
|
20 SNDRV_PCM_INFO_PAUSE
|
21 SNDRV_PCM_INFO_RESUME
|
22 SNDRV_PCM_INFO_INTERLEAVED
,
23 .period_bytes_min
= 32,
24 .period_bytes_max
= 8192,
27 .buffer_bytes_max
= 64 * 1024,
31 static const struct snd_dmaengine_pcm_config rk_dmaengine_pcm_config
= {
32 .pcm_hardware
= &snd_rockchip_hardware
,
33 .prepare_slave_config
= snd_dmaengine_pcm_prepare_slave_config
,
34 .prealloc_buffer_size
= 32 * 1024,
37 int rockchip_pcm_platform_register(struct device
*dev
)
39 return devm_snd_dmaengine_pcm_register(dev
, &rk_dmaengine_pcm_config
,
40 SND_DMAENGINE_PCM_FLAG_COMPAT
);
42 EXPORT_SYMBOL_GPL(rockchip_pcm_platform_register
);
44 MODULE_LICENSE("GPL v2");