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