linux/sound/soc/fsl/lpc3xxx-i2s.c

// SPDX-License-Identifier: GPL-2.0-or-later
//
// Author: Kevin Wells <[email protected]>
//
// Copyright (C) 2008 NXP Semiconductors
// Copyright 2023 Timesys Corporation <[email protected]>

#include <linux/init.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/clk.h>
#include <linux/io.h>

#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/dmaengine_pcm.h>
#include <sound/initval.h>
#include <sound/soc.h>

#include "lpc3xxx-i2s.h"

#define I2S_PLAYBACK_FLAG …
#define I2S_CAPTURE_FLAG …

#define LPC3XXX_I2S_RATES …

#define LPC3XXX_I2S_FORMATS …

static void __lpc3xxx_find_clkdiv(u32 *clkx, u32 *clky, int freq, int xbytes, u32 clkrate)
{ … }

static int lpc3xxx_i2s_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *cpu_dai)
{ … }

static void lpc3xxx_i2s_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *cpu_dai)
{ … }

static int lpc3xxx_i2s_set_dai_sysclk(struct snd_soc_dai *cpu_dai,
				      int clk_id, unsigned int freq, int dir)
{ … }

static int lpc3xxx_i2s_set_dai_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt)
{ … }

static int lpc3xxx_i2s_hw_params(struct snd_pcm_substream *substream,
				 struct snd_pcm_hw_params *params,
				 struct snd_soc_dai *cpu_dai)
{ … }

static int lpc3xxx_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
			       struct snd_soc_dai *cpu_dai)
{ … }

static int lpc3xxx_i2s_dai_probe(struct snd_soc_dai *dai)
{ … }

const struct snd_soc_dai_ops lpc3xxx_i2s_dai_ops = …;

struct snd_soc_dai_driver lpc3xxx_i2s_dai_driver = …;

static const struct snd_soc_component_driver lpc32xx_i2s_component = …;

static const struct regmap_config lpc32xx_i2s_regconfig = …;

static int lpc32xx_i2s_probe(struct platform_device *pdev)
{ … }

static const struct of_device_id lpc32xx_i2s_match[] = …;
MODULE_DEVICE_TABLE(of, lpc32xx_i2s_match);

static struct platform_driver lpc32xx_i2s_driver = …;

module_platform_driver(…) …;

MODULE_AUTHOR(…) …;
MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;