linux/sound/soc/loongson/loongson_i2s.c

// SPDX-License-Identifier: GPL-2.0
//
// Common functions for loongson I2S controller driver
//
// Copyright (C) 2023 Loongson Technology Corporation Limited.
// Author: Yingkun Meng <[email protected]>
//

#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/pm_runtime.h>
#include <linux/dma-mapping.h>
#include <sound/soc.h>
#include <linux/regmap.h>
#include <sound/pcm_params.h>
#include "loongson_i2s.h"

#define LOONGSON_I2S_FORMATS …

static int loongson_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
				struct snd_soc_dai *dai)
{ … }

static int loongson_i2s_hw_params(struct snd_pcm_substream *substream,
				  struct snd_pcm_hw_params *params,
				  struct snd_soc_dai *dai)
{ … }

static int loongson_i2s_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
				       unsigned int freq, int dir)
{ … }

static int loongson_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{ … }

static int loongson_i2s_dai_probe(struct snd_soc_dai *cpu_dai)
{ … }

static const struct snd_soc_dai_ops loongson_i2s_dai_ops = …;

struct snd_soc_dai_driver loongson_i2s_dai = …;

static int i2s_suspend(struct device *dev)
{ … }

static int i2s_resume(struct device *dev)
{ … }

const struct dev_pm_ops loongson_i2s_pm = …;