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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.4 *5 * Based on sound/soc/imx/imx-pcm-dma-mx2.c6 */7 8#include <linux/device.h>9#include <linux/init.h>10#include <linux/module.h>11 12#include <sound/core.h>13#include <sound/pcm.h>14#include <sound/soc.h>15#include <sound/dmaengine_pcm.h>16 17#include "mxs-pcm.h"18 19static 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	= 8192,28	.periods_min		= 1,29	.periods_max		= 52,30	.buffer_bytes_max	= 64 * 1024,31	.fifo_size		= 32,32};33 34static const struct snd_dmaengine_pcm_config mxs_dmaengine_pcm_config = {35	.pcm_hardware = &snd_mxs_hardware,36	.prealloc_buffer_size = 64 * 1024,37};38 39int mxs_pcm_platform_register(struct device *dev)40{41	return devm_snd_dmaengine_pcm_register(dev, &mxs_dmaengine_pcm_config,42		SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX);43}44EXPORT_SYMBOL_GPL(mxs_pcm_platform_register);45 46MODULE_DESCRIPTION("MXS ASoC PCM driver");47MODULE_LICENSE("GPL");48