1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * PC-Speaker driver for Linux
4 *
5 * Mixer implementation.
6 * Copyright (C) 2001-2008 Stas Sergeev
7 */
8
9 #include <sound/core.h>
10 #include <sound/control.h>
11 #include "pcsp.h"
12
13
14 static int pcsp_enable_info(struct snd_kcontrol *kcontrol,
15 struct snd_ctl_elem_info *uinfo)
16 {
17 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
18 uinfo->count = 1;
19 uinfo->value.integer.min = 0;
20 uinfo->value.integer.max = 1;
21 return 0;
22 }
23
24 static int pcsp_enable_get(struct snd_kcontrol *kcontrol,
25 struct snd_ctl_elem_value *ucontrol)
26 {
27 struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
28 ucontrol->value.integer.value[0] = chip->enable;
29 return 0;
30 }
31
32 static int pcsp_enable_put(struct snd_kcontrol *kcontrol,
33 struct snd_ctl_elem_value *ucontrol)
34 {
35 struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
36 int changed = 0;
37 int enab = ucontrol->value.integer.value[0];
38 if (enab != chip->enable) {
39 chip->enable = enab;
40 changed = 1;
41 }
42 return changed;
43 }
44
45 static int pcsp_treble_info(struct snd_kcontrol *kcontrol,
46 struct snd_ctl_elem_info *uinfo)
47 {
48 struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
49 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
50 uinfo->count = 1;
51 uinfo->value.enumerated.items = chip->max_treble + 1;
52 if (uinfo->value.enumerated.item > chip->max_treble)
53 uinfo->value.enumerated.item = chip->max_treble;
54 sprintf(uinfo->value.enumerated.name, "%lu",
55 (unsigned long)PCSP_CALC_RATE(uinfo->value.enumerated.item));
56 return 0;
57 }
58
59 static int pcsp_treble_get(struct snd_kcontrol *kcontrol,
60 struct snd_ctl_elem_value *ucontrol)
61 {
62 struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
63 ucontrol->value.enumerated.item[0] = chip->treble;
64 return 0;
65 }
66
67 static int pcsp_treble_put(struct snd_kcontrol *kcontrol,
68 struct snd_ctl_elem_value *ucontrol)
69 {
70 struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
71 int changed = 0;
72 int treble = ucontrol->value.enumerated.item[0];
73 if (treble != chip->treble) {
74 chip->treble = treble;
75 #if PCSP_DEBUG
76 printk(KERN_INFO "PCSP: rate set to %li\n", PCSP_RATE());
77 #endif
78 changed = 1;
79 }
80 return changed;
81 }
82
83 static int pcsp_pcspkr_info(struct snd_kcontrol *kcontrol,
84 struct snd_ctl_elem_info *uinfo)
85 {
86 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
87 uinfo->count = 1;
88 uinfo->value.integer.min = 0;
89 uinfo->value.integer.max = 1;
90 return 0;
91 }
92
93 static int pcsp_pcspkr_get(struct snd_kcontrol *kcontrol,
94 struct snd_ctl_elem_value *ucontrol)
95 {
96 struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
97 ucontrol->value.integer.value[0] = chip->pcspkr;
98 return 0;
99 }
100
101 static int pcsp_pcspkr_put(struct snd_kcontrol *kcontrol,
102 struct snd_ctl_elem_value *ucontrol)
103 {
104 struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
105 int changed = 0;
106 int spkr = ucontrol->value.integer.value[0];
107 if (spkr != chip->pcspkr) {
108 chip->pcspkr = spkr;
109 changed = 1;
110 }
111 return changed;
112 }
113
114 #define PCSP_MIXER_CONTROL(ctl_type, ctl_name) \
115 { \
116 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
117 .name = ctl_name, \
118 .info = pcsp_##ctl_type##_info, \
119 .get = pcsp_##ctl_type##_get, \
120 .put = pcsp_##ctl_type##_put, \
121 }
122
123 static const struct snd_kcontrol_new snd_pcsp_controls_pcm[] = {
124 PCSP_MIXER_CONTROL(enable, "Master Playback Switch"),
125 PCSP_MIXER_CONTROL(treble, "BaseFRQ Playback Volume"),
126 };
127
128 static const struct snd_kcontrol_new snd_pcsp_controls_spkr[] = {
129 PCSP_MIXER_CONTROL(pcspkr, "Beep Playback Switch"),
130 };
131
132 static int snd_pcsp_ctls_add(struct snd_pcsp *chip,
133 const struct snd_kcontrol_new *ctls, int num)
134 {
135 int i, err;
136 struct snd_card *card = chip->card;
137 for (i = 0; i < num; i++) {
138 err = snd_ctl_add(card, snd_ctl_new1(ctls + i, chip));
139 if (err < 0)
140 return err;
141 }
142 return 0;
143 }
144
145 int snd_pcsp_new_mixer(struct snd_pcsp *chip, int nopcm)
146 {
147 int err;
148 struct snd_card *card = chip->card;
149
150 if (!nopcm) {
151 err = snd_pcsp_ctls_add(chip, snd_pcsp_controls_pcm,
152 ARRAY_SIZE(snd_pcsp_controls_pcm));
153 if (err < 0)
154 return err;
155 }
156 err = snd_pcsp_ctls_add(chip, snd_pcsp_controls_spkr,
157 ARRAY_SIZE(snd_pcsp_controls_spkr));
158 if (err < 0)
159 return err;
160
161 strcpy(card->mixername, "PC-Speaker");
162
163 return 0;
164 }
165
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