47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
|
|
*
|
|
* Based on sound/soc/imx/imx-pcm-dma-mx2.c
|
|
*/
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/init.h>
|
|
#include <linux/module.h>
|
|
|
|
#include <sound/core.h>
|
|
#include <sound/pcm.h>
|
|
#include <sound/soc.h>
|
|
#include <sound/dmaengine_pcm.h>
|
|
|
|
#include "mxs-pcm.h"
|
|
|
|
static const struct snd_pcm_hardware snd_mxs_hardware = {
|
|
.info = SNDRV_PCM_INFO_MMAP |
|
|
SNDRV_PCM_INFO_MMAP_VALID |
|
|
SNDRV_PCM_INFO_PAUSE |
|
|
SNDRV_PCM_INFO_RESUME |
|
|
SNDRV_PCM_INFO_INTERLEAVED |
|
|
SNDRV_PCM_INFO_HALF_DUPLEX,
|
|
.period_bytes_min = 32,
|
|
.period_bytes_max = 8192,
|
|
.periods_min = 1,
|
|
.periods_max = 52,
|
|
.buffer_bytes_max = 64 * 1024,
|
|
.fifo_size = 32,
|
|
};
|
|
|
|
static const struct snd_dmaengine_pcm_config mxs_dmaengine_pcm_config = {
|
|
.pcm_hardware = &snd_mxs_hardware,
|
|
.prealloc_buffer_size = 64 * 1024,
|
|
};
|
|
|
|
int mxs_pcm_platform_register(struct device *dev)
|
|
{
|
|
return devm_snd_dmaengine_pcm_register(dev, &mxs_dmaengine_pcm_config,
|
|
SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX);
|
|
}
|
|
EXPORT_SYMBOL_GPL(mxs_pcm_platform_register);
|
|
|
|
MODULE_LICENSE("GPL");
|