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  */
vx_mic_level_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)21 static 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 
vx_mic_level_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)30 static 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 
vx_mic_level_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)38 static 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 
57 static const DECLARE_TLV_DB_SCALE(db_scale_mic, -21, 3, 0);
58 
59 static 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 
vx_mic_boost_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)75 static 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 
vx_mic_boost_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)83 static 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 
99 static 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 
vxp_add_mic_controls(struct vx_core * _chip)108 int 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