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	mutex_lock(&_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		mutex_unlock(&_chip->mixer_mutex);
51		return 1;
52	}
53	mutex_unlock(&_chip->mixer_mutex);
54	return 0;
55}
56
57static const DECLARE_TLV_DB_SCALE(db_scale_mic, -21, 3, 0);
58
59static const struct snd_kcontrol_new vx_control_mic_level = {
60	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
61	.access =	(SNDRV_CTL_ELEM_ACCESS_READWRITE |
62			 SNDRV_CTL_ELEM_ACCESS_TLV_READ),
63	.name =		"Mic Capture Volume",
64	.info =		vx_mic_level_info,
65	.get =		vx_mic_level_get,
66	.put =		vx_mic_level_put,
67	.tlv = { .p = db_scale_mic },
68};
69
70/*
71 * mic boost level control (for VXP440)
72 */
73#define vx_mic_boost_info		snd_ctl_boolean_mono_info
74
75static int vx_mic_boost_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
76{
77	struct vx_core *_chip = snd_kcontrol_chip(kcontrol);
78	struct snd_vxpocket *chip = to_vxpocket(_chip);
79	ucontrol->value.integer.value[0] = chip->mic_level;
80	return 0;
81}
82
83static int vx_mic_boost_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
84{
85	struct vx_core *_chip = snd_kcontrol_chip(kcontrol);
86	struct snd_vxpocket *chip = to_vxpocket(_chip);
87	int val = !!ucontrol->value.integer.value[0];
88	mutex_lock(&_chip->mixer_mutex);
89	if (chip->mic_level != val) {
90		vx_set_mic_boost(_chip, val);
91		chip->mic_level = val;
92		mutex_unlock(&_chip->mixer_mutex);
93		return 1;
94	}
95	mutex_unlock(&_chip->mixer_mutex);
96	return 0;
97}
98
99static const struct snd_kcontrol_new vx_control_mic_boost = {
100	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
101	.name =		"Mic Boost",
102	.info =		vx_mic_boost_info,
103	.get =		vx_mic_boost_get,
104	.put =		vx_mic_boost_put,
105};
106
107
108int vxp_add_mic_controls(struct vx_core *_chip)
109{
110	struct snd_vxpocket *chip = to_vxpocket(_chip);
111	int err;
112
113	/* mute input levels */
114	chip->mic_level = 0;
115	switch (_chip->type) {
116	case VX_TYPE_VXPOCKET:
117		vx_set_mic_level(_chip, 0);
118		break;
119	case VX_TYPE_VXP440:
120		vx_set_mic_boost(_chip, 0);
121		break;
122	}
123
124	/* mic level */
125	switch (_chip->type) {
126	case VX_TYPE_VXPOCKET:
127		err = snd_ctl_add(_chip->card, snd_ctl_new1(&vx_control_mic_level, chip));
128		if (err < 0)
129			return err;
130		break;
131	case VX_TYPE_VXP440:
132		err = snd_ctl_add(_chip->card, snd_ctl_new1(&vx_control_mic_boost, chip));
133		if (err < 0)
134			return err;
135		break;
136	}
137
138	return 0;
139}
140
141