linux/sound/i2c/other/pt2258.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *   ALSA Driver for the PT2258 volume controller.
 *
 *	Copyright (c) 2006  Jochen Voss <[email protected]>
 */      

#include <sound/core.h>
#include <sound/control.h>
#include <sound/tlv.h>
#include <sound/i2c.h>
#include <sound/pt2258.h>
#include <linux/module.h>

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

#define PT2258_CMD_RESET …
#define PT2258_CMD_UNMUTE …
#define PT2258_CMD_MUTE …

static const unsigned char pt2258_channel_code[12] = …;

int snd_pt2258_reset(struct snd_pt2258 *pt)
{ … }

static int pt2258_stereo_volume_info(struct snd_kcontrol *kcontrol,
				     struct snd_ctl_elem_info *uinfo)
{ … }

static int pt2258_stereo_volume_get(struct snd_kcontrol *kcontrol,
				    struct snd_ctl_elem_value *ucontrol)
{ … }

static int pt2258_stereo_volume_put(struct snd_kcontrol *kcontrol,
				    struct snd_ctl_elem_value *ucontrol)
{ … }

#define pt2258_switch_info …

static int pt2258_switch_get(struct snd_kcontrol *kcontrol,
			     struct snd_ctl_elem_value *ucontrol)
{ … }

static int pt2258_switch_put(struct snd_kcontrol *kcontrol,
			     struct snd_ctl_elem_value *ucontrol)
{ … }

static const DECLARE_TLV_DB_SCALE(pt2258_db_scale, -7900, 100, 0);

int snd_pt2258_build_controls(struct snd_pt2258 *pt)
{ … }

EXPORT_SYMBOL(…);
EXPORT_SYMBOL(…);