vxp_mixer.c

  1// SPDX-License-Identifier: GPL-2.0-or-later
  2/*
  3 * Driver for Digigram VXpocket soundcards
  4 *
  5 * VX-pocket mixer
  6 *
  7 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
  8 */
  9
 10#include <sound/core.h>
 11#include <sound/control.h>
 12#include <sound/tlv.h>
 13#include "vxpocket.h"
 14
 15#define MIC_LEVEL_MIN	0
 16#define MIC_LEVEL_MAX	8
 17
 18/*
 19 * mic level control (for VXPocket)
 20 */
 21static int vx_mic_level_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 22{
 23	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 24	uinfo->count = 1;
 25	uinfo->value.integer.min = 0;
 26	uinfo->value.integer.max = MIC_LEVEL_MAX;
 27	return 0;
 28}
 29
 30static int vx_mic_level_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 31{
 32	struct vx_core *_chip = snd_kcontrol_chip(kcontrol);
 33	struct snd_vxpocket *chip = to_vxpocket(_chip);
 34	ucontrol->value.integer.value[0] = chip->mic_level;
 35	return 0;
 36}
 37
 38static int vx_mic_level_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 39{
 40	struct vx_core *_chip = snd_kcontrol_chip(kcontrol);
 41	struct snd_vxpocket *chip = to_vxpocket(_chip);
 42	unsigned int val = ucontrol->value.integer.value[0];
 43
 44	if (val > MIC_LEVEL_MAX)
 45		return -EINVAL;
 46	guard(mutex)(&_chip->mixer_mutex);
 47	if (chip->mic_level != ucontrol->value.integer.value[0]) {
 48		vx_set_mic_level(_chip, ucontrol->value.integer.value[0]);
 49		chip->mic_level = ucontrol->value.integer.value[0];
 50		return 1;
 51	}
 52	return 0;
 53}
 54
 55static const DECLARE_TLV_DB_SCALE(db_scale_mic, -21, 3, 0);
 56
 57static const struct snd_kcontrol_new vx_control_mic_level = {
 58	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
 59	.access =	(SNDRV_CTL_ELEM_ACCESS_READWRITE |
 60			 SNDRV_CTL_ELEM_ACCESS_TLV_READ),
 61	.name =		"Mic Capture Volume",
 62	.info =		vx_mic_level_info,
 63	.get =		vx_mic_level_get,
 64	.put =		vx_mic_level_put,
 65	.tlv = { .p = db_scale_mic },
 66};
 67
 68/*
 69 * mic boost level control (for VXP440)
 70 */
 71#define vx_mic_boost_info		snd_ctl_boolean_mono_info
 72
 73static int vx_mic_boost_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 74{
 75	struct vx_core *_chip = snd_kcontrol_chip(kcontrol);
 76	struct snd_vxpocket *chip = to_vxpocket(_chip);
 77	ucontrol->value.integer.value[0] = chip->mic_level;
 78	return 0;
 79}
 80
 81static int vx_mic_boost_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 82{
 83	struct vx_core *_chip = snd_kcontrol_chip(kcontrol);
 84	struct snd_vxpocket *chip = to_vxpocket(_chip);
 85	int val = !!ucontrol->value.integer.value[0];
 86
 87	guard(mutex)(&_chip->mixer_mutex);
 88	if (chip->mic_level != val) {
 89		vx_set_mic_boost(_chip, val);
 90		chip->mic_level = val;
 91		return 1;
 92	}
 93	return 0;
 94}
 95
 96static const struct snd_kcontrol_new vx_control_mic_boost = {
 97	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
 98	.name =		"Mic Boost",
 99	.info =		vx_mic_boost_info,
100	.get =		vx_mic_boost_get,
101	.put =		vx_mic_boost_put,
102};
103
104
105int vxp_add_mic_controls(struct vx_core *_chip)
106{
107	struct snd_vxpocket *chip = to_vxpocket(_chip);
108	int err;
109
110	/* mute input levels */
111	chip->mic_level = 0;
112	switch (_chip->type) {
113	case VX_TYPE_VXPOCKET:
114		vx_set_mic_level(_chip, 0);
115		break;
116	case VX_TYPE_VXP440:
117		vx_set_mic_boost(_chip, 0);
118		break;
119	}
120
121	/* mic level */
122	switch (_chip->type) {
123	case VX_TYPE_VXPOCKET:
124		err = snd_ctl_add(_chip->card, snd_ctl_new1(&vx_control_mic_level, chip));
125		if (err < 0)
126			return err;
127		break;
128	case VX_TYPE_VXP440:
129		err = snd_ctl_add(_chip->card, snd_ctl_new1(&vx_control_mic_boost, chip));
130		if (err < 0)
131			return err;
132		break;
133	}
134
135	return 0;
136}
137