linux/sound/i2c/other/ak4117.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Routines for control of the AK4117 via 4-wire serial interface
 *  IEC958 (S/PDIF) receiver by Asahi Kasei
 *  Copyright (c) by Jaroslav Kysela <[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/ak4117.h>
#include <sound/asoundef.h>

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

#define AK4117_ADDR …

static void snd_ak4117_timer(struct timer_list *t);

static void reg_write(struct ak4117 *ak4117, unsigned char reg, unsigned char val)
{ … }

static inline unsigned char reg_read(struct ak4117 *ak4117, unsigned char reg)
{ … }

#if 0
static void reg_dump(struct ak4117 *ak4117)
{
	int i;

	printk(KERN_DEBUG "AK4117 REG DUMP:\n");
	for (i = 0; i < 0x1b; i++)
		printk(KERN_DEBUG "reg[%02x] = %02x (%02x)\n", i, reg_read(ak4117, i), i < sizeof(ak4117->regmap) ? ak4117->regmap[i] : 0);
}
#endif

static void snd_ak4117_free(struct ak4117 *chip)
{ … }

static int snd_ak4117_dev_free(struct snd_device *device)
{ … }

int snd_ak4117_create(struct snd_card *card, ak4117_read_t *read, ak4117_write_t *write,
		      const unsigned char pgm[5], void *private_data, struct ak4117 **r_ak4117)
{ … }

void snd_ak4117_reg_write(struct ak4117 *chip, unsigned char reg, unsigned char mask, unsigned char val)
{ … }

void snd_ak4117_reinit(struct ak4117 *chip)
{ … }

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

static int snd_ak4117_in_error_info(struct snd_kcontrol *kcontrol,
				    struct snd_ctl_elem_info *uinfo)
{ … }

static int snd_ak4117_in_error_get(struct snd_kcontrol *kcontrol,
				   struct snd_ctl_elem_value *ucontrol)
{ … }

#define snd_ak4117_in_bit_info …

static int snd_ak4117_in_bit_get(struct snd_kcontrol *kcontrol,
				 struct snd_ctl_elem_value *ucontrol)
{ … }

static int snd_ak4117_rx_info(struct snd_kcontrol *kcontrol,
			      struct snd_ctl_elem_info *uinfo)
{ … }

static int snd_ak4117_rx_get(struct snd_kcontrol *kcontrol,
			     struct snd_ctl_elem_value *ucontrol)
{ … }

static int snd_ak4117_rx_put(struct snd_kcontrol *kcontrol,
			     struct snd_ctl_elem_value *ucontrol)
{ … }

static int snd_ak4117_rate_info(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_info *uinfo)
{ … }

static int snd_ak4117_rate_get(struct snd_kcontrol *kcontrol,
			       struct snd_ctl_elem_value *ucontrol)
{ … }

static int snd_ak4117_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{ … }

static int snd_ak4117_spdif_get(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_value *ucontrol)
{ … }

static int snd_ak4117_spdif_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{ … }

static int snd_ak4117_spdif_mask_get(struct snd_kcontrol *kcontrol,
				      struct snd_ctl_elem_value *ucontrol)
{ … }

static int snd_ak4117_spdif_pinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{ … }

static int snd_ak4117_spdif_pget(struct snd_kcontrol *kcontrol,
				 struct snd_ctl_elem_value *ucontrol)
{ … }

static int snd_ak4117_spdif_qinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{ … }

static int snd_ak4117_spdif_qget(struct snd_kcontrol *kcontrol,
				 struct snd_ctl_elem_value *ucontrol)
{ … }

/* Don't forget to change AK4117_CONTROLS define!!! */
static const struct snd_kcontrol_new snd_ak4117_iec958_controls[] = …;

int snd_ak4117_build(struct ak4117 *ak4117, struct snd_pcm_substream *cap_substream)
{ … }

int snd_ak4117_external_rate(struct ak4117 *ak4117)
{ … }

int snd_ak4117_check_rate_and_errors(struct ak4117 *ak4117, unsigned int flags)
{ … }

static void snd_ak4117_timer(struct timer_list *t)
{ … }

EXPORT_SYMBOL(…);
EXPORT_SYMBOL(…);
EXPORT_SYMBOL(…);
EXPORT_SYMBOL(…);
EXPORT_SYMBOL(…);
EXPORT_SYMBOL(…);