linux/sound/soc/codecs/rk3328_codec.c

// SPDX-License-Identifier: GPL-2.0
//
// rk3328 ALSA SoC Audio driver
//
// Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd All rights reserved.

#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/mfd/syscon.h>
#include <sound/dmaengine_pcm.h>
#include <sound/pcm_params.h>
#include "rk3328_codec.h"

/*
 * volume setting
 * 0: -39dB
 * 26: 0dB
 * 31: 6dB
 * Step: 1.5dB
 */
#define OUT_VOLUME …
#define RK3328_GRF_SOC_CON2 …
#define RK3328_GRF_SOC_CON10 …
#define INITIAL_FREQ …

struct rk3328_codec_priv { … };

static const struct reg_default rk3328_codec_reg_defaults[] = …;

static int rk3328_codec_reset(struct rk3328_codec_priv *rk3328)
{ … }

static int rk3328_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{ … }

static int rk3328_mute_stream(struct snd_soc_dai *dai, int mute, int direction)
{ … }

static int rk3328_codec_power_on(struct rk3328_codec_priv *rk3328, int wait_ms)
{ … }

static int rk3328_codec_power_off(struct rk3328_codec_priv *rk3328, int wait_ms)
{ … }

static const struct rk3328_reg_msk_val playback_open_list[] = …;

static int rk3328_codec_open_playback(struct rk3328_codec_priv *rk3328)
{ … }

static const struct rk3328_reg_msk_val playback_close_list[] = …;

static int rk3328_codec_close_playback(struct rk3328_codec_priv *rk3328)
{ … }

static int rk3328_hw_params(struct snd_pcm_substream *substream,
			    struct snd_pcm_hw_params *params,
			    struct snd_soc_dai *dai)
{ … }

static int rk3328_pcm_startup(struct snd_pcm_substream *substream,
			      struct snd_soc_dai *dai)
{ … }

static void rk3328_pcm_shutdown(struct snd_pcm_substream *substream,
				struct snd_soc_dai *dai)
{ … }

static const struct snd_soc_dai_ops rk3328_dai_ops = …;

static struct snd_soc_dai_driver rk3328_dai[] = …;

static int rk3328_codec_probe(struct snd_soc_component *component)
{ … }

static void rk3328_codec_remove(struct snd_soc_component *component)
{ … }

static const struct snd_soc_component_driver soc_codec_rk3328 = …;

static bool rk3328_codec_write_read_reg(struct device *dev, unsigned int reg)
{ … }

static bool rk3328_codec_volatile_reg(struct device *dev, unsigned int reg)
{ … }

static const struct regmap_config rk3328_codec_regmap_config = …;

static int rk3328_platform_probe(struct platform_device *pdev)
{ … }

static const struct of_device_id rk3328_codec_of_match[] __maybe_unused = …;
MODULE_DEVICE_TABLE(of, rk3328_codec_of_match);

static struct platform_driver rk3328_codec_driver = …;
module_platform_driver(…) …;

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