1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
5 * Based on sound/soc/imx/imx-pcm-dma-mx2.c
8 #include <linux/device.h>
9 #include <linux/init.h>
10 #include <linux/module.h>
12 #include <sound/core.h>
13 #include <sound/pcm.h>
14 #include <sound/soc.h>
15 #include <sound/dmaengine_pcm.h>
19 static const struct snd_pcm_hardware snd_mxs_hardware
= {
20 .info
= SNDRV_PCM_INFO_MMAP
|
21 SNDRV_PCM_INFO_MMAP_VALID
|
22 SNDRV_PCM_INFO_PAUSE
|
23 SNDRV_PCM_INFO_RESUME
|
24 SNDRV_PCM_INFO_INTERLEAVED
|
25 SNDRV_PCM_INFO_HALF_DUPLEX
,
26 .period_bytes_min
= 32,
27 .period_bytes_max
= 8192,
30 .buffer_bytes_max
= 64 * 1024,
34 static const struct snd_dmaengine_pcm_config mxs_dmaengine_pcm_config
= {
35 .pcm_hardware
= &snd_mxs_hardware
,
36 .prealloc_buffer_size
= 64 * 1024,
39 int mxs_pcm_platform_register(struct device
*dev
)
41 return devm_snd_dmaengine_pcm_register(dev
, &mxs_dmaengine_pcm_config
,
42 SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX
);
44 EXPORT_SYMBOL_GPL(mxs_pcm_platform_register
);
46 MODULE_LICENSE("GPL");