1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Based on sound/soc/imx/imx-pcm-dma-mx2.c
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <linux/device.h>
9*4882a593Smuzhiyun #include <linux/init.h>
10*4882a593Smuzhiyun #include <linux/module.h>
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #include <sound/core.h>
13*4882a593Smuzhiyun #include <sound/pcm.h>
14*4882a593Smuzhiyun #include <sound/soc.h>
15*4882a593Smuzhiyun #include <sound/dmaengine_pcm.h>
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun #include "mxs-pcm.h"
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun static const struct snd_pcm_hardware snd_mxs_hardware = {
20*4882a593Smuzhiyun .info = SNDRV_PCM_INFO_MMAP |
21*4882a593Smuzhiyun SNDRV_PCM_INFO_MMAP_VALID |
22*4882a593Smuzhiyun SNDRV_PCM_INFO_PAUSE |
23*4882a593Smuzhiyun SNDRV_PCM_INFO_RESUME |
24*4882a593Smuzhiyun SNDRV_PCM_INFO_INTERLEAVED |
25*4882a593Smuzhiyun SNDRV_PCM_INFO_HALF_DUPLEX,
26*4882a593Smuzhiyun .period_bytes_min = 32,
27*4882a593Smuzhiyun .period_bytes_max = 8192,
28*4882a593Smuzhiyun .periods_min = 1,
29*4882a593Smuzhiyun .periods_max = 52,
30*4882a593Smuzhiyun .buffer_bytes_max = 64 * 1024,
31*4882a593Smuzhiyun .fifo_size = 32,
32*4882a593Smuzhiyun };
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun static const struct snd_dmaengine_pcm_config mxs_dmaengine_pcm_config = {
35*4882a593Smuzhiyun .pcm_hardware = &snd_mxs_hardware,
36*4882a593Smuzhiyun .prealloc_buffer_size = 64 * 1024,
37*4882a593Smuzhiyun };
38*4882a593Smuzhiyun
mxs_pcm_platform_register(struct device * dev)39*4882a593Smuzhiyun int mxs_pcm_platform_register(struct device *dev)
40*4882a593Smuzhiyun {
41*4882a593Smuzhiyun return devm_snd_dmaengine_pcm_register(dev, &mxs_dmaengine_pcm_config,
42*4882a593Smuzhiyun SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX);
43*4882a593Smuzhiyun }
44*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(mxs_pcm_platform_register);
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun MODULE_LICENSE("GPL");
47