linux/sound/i2c/other/ak4113.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Routines for control of the AK4113 via I2C/4-wire serial interface
 *  IEC958 (S/PDIF) receiver by Asahi Kasei
 *  Copyright (c) by Jaroslav Kysela <[email protected]>
 *  Copyright (c) by Pavel Hofman <[email protected]>
 */

#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/pcm.h>
#include <sound/ak4113.h>
#include <sound/asoundef.h>
#include <sound/info.h>

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

#define AK4113_ADDR …

static void ak4113_stats(struct work_struct *work);
static void ak4113_init_regs(struct ak4113 *chip);


static void reg_write(struct ak4113 *ak4113, unsigned char reg,
		unsigned char val)
{ … }

static inline unsigned char reg_read(struct ak4113 *ak4113, unsigned char reg)
{ … }

static void snd_ak4113_free(struct ak4113 *chip)
{ … }

static int snd_ak4113_dev_free(struct snd_device *device)
{ … }

int snd_ak4113_create(struct snd_card *card, ak4113_read_t *read,
		ak4113_write_t *write, const unsigned char *pgm,
		void *private_data, struct ak4113 **r_ak4113)
{ … }
EXPORT_SYMBOL_GPL(…);

void snd_ak4113_reg_write(struct ak4113 *chip, unsigned char reg,
		unsigned char mask, unsigned char val)
{ … }
EXPORT_SYMBOL_GPL(…);

static void ak4113_init_regs(struct ak4113 *chip)
{ … }

void snd_ak4113_reinit(struct ak4113 *chip)
{ … }
EXPORT_SYMBOL_GPL(…);

static unsigned int external_rate(unsigned char rcs1)
{ … }

static int snd_ak4113_in_error_info(struct snd_kcontrol *kcontrol,
				    struct snd_ctl_elem_info *uinfo)
{ … }

static int snd_ak4113_in_error_get(struct snd_kcontrol *kcontrol,
				   struct snd_ctl_elem_value *ucontrol)
{ … }

#define snd_ak4113_in_bit_info …

static int snd_ak4113_in_bit_get(struct snd_kcontrol *kcontrol,
				 struct snd_ctl_elem_value *ucontrol)
{ … }

static int snd_ak4113_rx_info(struct snd_kcontrol *kcontrol,
			      struct snd_ctl_elem_info *uinfo)
{ … }

static int snd_ak4113_rx_get(struct snd_kcontrol *kcontrol,
			     struct snd_ctl_elem_value *ucontrol)
{ … }

static int snd_ak4113_rx_put(struct snd_kcontrol *kcontrol,
			     struct snd_ctl_elem_value *ucontrol)
{ … }

static int snd_ak4113_rate_info(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_info *uinfo)
{ … }

static int snd_ak4113_rate_get(struct snd_kcontrol *kcontrol,
			       struct snd_ctl_elem_value *ucontrol)
{ … }

static int snd_ak4113_spdif_info(struct snd_kcontrol *kcontrol,
		struct snd_ctl_elem_info *uinfo)
{ … }

static int snd_ak4113_spdif_get(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_value *ucontrol)
{ … }

static int snd_ak4113_spdif_mask_info(struct snd_kcontrol *kcontrol,
		struct snd_ctl_elem_info *uinfo)
{ … }

static int snd_ak4113_spdif_mask_get(struct snd_kcontrol *kcontrol,
				      struct snd_ctl_elem_value *ucontrol)
{ … }

static int snd_ak4113_spdif_pinfo(struct snd_kcontrol *kcontrol,
		struct snd_ctl_elem_info *uinfo)
{ … }

static int snd_ak4113_spdif_pget(struct snd_kcontrol *kcontrol,
				 struct snd_ctl_elem_value *ucontrol)
{ … }

static int snd_ak4113_spdif_qinfo(struct snd_kcontrol *kcontrol,
		struct snd_ctl_elem_info *uinfo)
{ … }

static int snd_ak4113_spdif_qget(struct snd_kcontrol *kcontrol,
				 struct snd_ctl_elem_value *ucontrol)
{ … }

/* Don't forget to change AK4113_CONTROLS define!!! */
static const struct snd_kcontrol_new snd_ak4113_iec958_controls[] = …;

static void snd_ak4113_proc_regs_read(struct snd_info_entry *entry,
		struct snd_info_buffer *buffer)
{ … }

static void snd_ak4113_proc_init(struct ak4113 *ak4113)
{ … }

int snd_ak4113_build(struct ak4113 *ak4113,
		struct snd_pcm_substream *cap_substream)
{ … }
EXPORT_SYMBOL_GPL(…);

int snd_ak4113_external_rate(struct ak4113 *ak4113)
{ … }
EXPORT_SYMBOL_GPL(…);

int snd_ak4113_check_rate_and_errors(struct ak4113 *ak4113, unsigned int flags)
{ … }
EXPORT_SYMBOL_GPL(…);

static void ak4113_stats(struct work_struct *work)
{ … }

#ifdef CONFIG_PM
void snd_ak4113_suspend(struct ak4113 *chip)
{ … }
EXPORT_SYMBOL(…);

void snd_ak4113_resume(struct ak4113 *chip)
{ … }
EXPORT_SYMBOL(…);
#endif