linux/drivers/staging/vc04_services/bcm2835-audio/bcm2835-ctl.c

// SPDX-License-Identifier: GPL-2.0
/* Copyright 2011 Broadcom Corporation.  All rights reserved. */

#include <sound/core.h>
#include <sound/control.h>
#include <sound/tlv.h>
#include <sound/asoundef.h>

#include "bcm2835.h"

/* volume maximum and minimum in terms of 0.01dB */
#define CTRL_VOL_MAX …
#define CTRL_VOL_MIN …

static int bcm2835_audio_set_chip_ctls(struct bcm2835_chip *chip)
{ … }

static int snd_bcm2835_ctl_info(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_info *uinfo)
{ … }

static int snd_bcm2835_ctl_get(struct snd_kcontrol *kcontrol,
			       struct snd_ctl_elem_value *ucontrol)
{ … }

static int snd_bcm2835_ctl_put(struct snd_kcontrol *kcontrol,
			       struct snd_ctl_elem_value *ucontrol)
{ … }

static DECLARE_TLV_DB_SCALE(snd_bcm2835_db_scale, CTRL_VOL_MIN, 1, 1);

static const struct snd_kcontrol_new snd_bcm2835_ctl[] = …;

static int snd_bcm2835_spdif_default_info(struct snd_kcontrol *kcontrol,
					  struct snd_ctl_elem_info *uinfo)
{ … }

static int snd_bcm2835_spdif_default_get(struct snd_kcontrol *kcontrol,
					 struct snd_ctl_elem_value *ucontrol)
{ … }

static int snd_bcm2835_spdif_default_put(struct snd_kcontrol *kcontrol,
					 struct snd_ctl_elem_value *ucontrol)
{ … }

static int snd_bcm2835_spdif_mask_info(struct snd_kcontrol *kcontrol,
				       struct snd_ctl_elem_info *uinfo)
{ … }

static int snd_bcm2835_spdif_mask_get(struct snd_kcontrol *kcontrol,
				      struct snd_ctl_elem_value *ucontrol)
{ … }

static const struct snd_kcontrol_new snd_bcm2835_spdif[] = …;

static int create_ctls(struct bcm2835_chip *chip, size_t size,
		       const struct snd_kcontrol_new *kctls)
{ … }

int snd_bcm2835_new_headphones_ctl(struct bcm2835_chip *chip)
{ … }

int snd_bcm2835_new_hdmi_ctl(struct bcm2835_chip *chip)
{ … }