1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright (C) 2020 Texas Instruments Incorporated - https://www.ti.com
4*4882a593Smuzhiyun * Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
5*4882a593Smuzhiyun */
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #include <linux/module.h>
8*4882a593Smuzhiyun #include <sound/core.h>
9*4882a593Smuzhiyun #include <sound/pcm.h>
10*4882a593Smuzhiyun #include <sound/pcm_params.h>
11*4882a593Smuzhiyun #include <sound/soc.h>
12*4882a593Smuzhiyun #include <sound/dmaengine_pcm.h>
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun #include "udma-pcm.h"
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun static const struct snd_pcm_hardware udma_pcm_hardware = {
17*4882a593Smuzhiyun .info = SNDRV_PCM_INFO_MMAP |
18*4882a593Smuzhiyun SNDRV_PCM_INFO_MMAP_VALID |
19*4882a593Smuzhiyun SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME |
20*4882a593Smuzhiyun SNDRV_PCM_INFO_NO_PERIOD_WAKEUP |
21*4882a593Smuzhiyun SNDRV_PCM_INFO_INTERLEAVED,
22*4882a593Smuzhiyun .buffer_bytes_max = SIZE_MAX,
23*4882a593Smuzhiyun .period_bytes_min = 32,
24*4882a593Smuzhiyun .period_bytes_max = SZ_64K,
25*4882a593Smuzhiyun .periods_min = 2,
26*4882a593Smuzhiyun .periods_max = UINT_MAX,
27*4882a593Smuzhiyun };
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun static const struct snd_dmaengine_pcm_config udma_dmaengine_pcm_config = {
30*4882a593Smuzhiyun .pcm_hardware = &udma_pcm_hardware,
31*4882a593Smuzhiyun .prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
32*4882a593Smuzhiyun };
33*4882a593Smuzhiyun
udma_pcm_platform_register(struct device * dev)34*4882a593Smuzhiyun int udma_pcm_platform_register(struct device *dev)
35*4882a593Smuzhiyun {
36*4882a593Smuzhiyun return devm_snd_dmaengine_pcm_register(dev, &udma_dmaengine_pcm_config,
37*4882a593Smuzhiyun 0);
38*4882a593Smuzhiyun }
39*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(udma_pcm_platform_register);
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
42*4882a593Smuzhiyun MODULE_DESCRIPTION("UDMA PCM ASoC platform driver");
43*4882a593Smuzhiyun MODULE_LICENSE("GPL v2");
44