ALSA: snd-pcsp: add nopcm mode
[linux-3.10.git] / sound / drivers / pcsp / pcsp_mixer.c
1 /*
2  * PC-Speaker driver for Linux
3  *
4  * Mixer implementation.
5  * Copyright (C) 2001-2008  Stas Sergeev
6  */
7
8 #include <sound/core.h>
9 #include <sound/control.h>
10 #include "pcsp.h"
11
12
13 static int pcsp_enable_info(struct snd_kcontrol *kcontrol,
14                             struct snd_ctl_elem_info *uinfo)
15 {
16         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
17         uinfo->count = 1;
18         uinfo->value.integer.min = 0;
19         uinfo->value.integer.max = 1;
20         return 0;
21 }
22
23 static int pcsp_enable_get(struct snd_kcontrol *kcontrol,
24                            struct snd_ctl_elem_value *ucontrol)
25 {
26         struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
27         ucontrol->value.integer.value[0] = chip->enable;
28         return 0;
29 }
30
31 static int pcsp_enable_put(struct snd_kcontrol *kcontrol,
32                            struct snd_ctl_elem_value *ucontrol)
33 {
34         struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
35         int changed = 0;
36         int enab = ucontrol->value.integer.value[0];
37         if (enab != chip->enable) {
38                 chip->enable = enab;
39                 changed = 1;
40         }
41         return changed;
42 }
43
44 static int pcsp_treble_info(struct snd_kcontrol *kcontrol,
45                             struct snd_ctl_elem_info *uinfo)
46 {
47         struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
48         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
49         uinfo->count = 1;
50         uinfo->value.enumerated.items = chip->max_treble + 1;
51         if (uinfo->value.enumerated.item > chip->max_treble)
52                 uinfo->value.enumerated.item = chip->max_treble;
53         sprintf(uinfo->value.enumerated.name, "%lu",
54                 (unsigned long)PCSP_CALC_RATE(uinfo->value.enumerated.item));
55         return 0;
56 }
57
58 static int pcsp_treble_get(struct snd_kcontrol *kcontrol,
59                            struct snd_ctl_elem_value *ucontrol)
60 {
61         struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
62         ucontrol->value.enumerated.item[0] = chip->treble;
63         return 0;
64 }
65
66 static int pcsp_treble_put(struct snd_kcontrol *kcontrol,
67                            struct snd_ctl_elem_value *ucontrol)
68 {
69         struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
70         int changed = 0;
71         int treble = ucontrol->value.enumerated.item[0];
72         if (treble != chip->treble) {
73                 chip->treble = treble;
74 #if PCSP_DEBUG
75                 printk(KERN_INFO "PCSP: rate set to %li\n", PCSP_RATE());
76 #endif
77                 changed = 1;
78         }
79         return changed;
80 }
81
82 static int pcsp_pcspkr_info(struct snd_kcontrol *kcontrol,
83                             struct snd_ctl_elem_info *uinfo)
84 {
85         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
86         uinfo->count = 1;
87         uinfo->value.integer.min = 0;
88         uinfo->value.integer.max = 1;
89         return 0;
90 }
91
92 static int pcsp_pcspkr_get(struct snd_kcontrol *kcontrol,
93                            struct snd_ctl_elem_value *ucontrol)
94 {
95         struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
96         ucontrol->value.integer.value[0] = chip->pcspkr;
97         return 0;
98 }
99
100 static int pcsp_pcspkr_put(struct snd_kcontrol *kcontrol,
101                            struct snd_ctl_elem_value *ucontrol)
102 {
103         struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
104         int changed = 0;
105         int spkr = ucontrol->value.integer.value[0];
106         if (spkr != chip->pcspkr) {
107                 chip->pcspkr = spkr;
108                 changed = 1;
109         }
110         return changed;
111 }
112
113 #define PCSP_MIXER_CONTROL(ctl_type, ctl_name) \
114 { \
115         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER, \
116         .name =         ctl_name, \
117         .info =         pcsp_##ctl_type##_info, \
118         .get =          pcsp_##ctl_type##_get, \
119         .put =          pcsp_##ctl_type##_put, \
120 }
121
122 static struct snd_kcontrol_new __devinitdata snd_pcsp_controls_pcm[] = {
123         PCSP_MIXER_CONTROL(enable, "Master Playback Switch"),
124         PCSP_MIXER_CONTROL(treble, "BaseFRQ Playback Volume"),
125 };
126
127 static struct snd_kcontrol_new __devinitdata snd_pcsp_controls_spkr[] = {
128         PCSP_MIXER_CONTROL(pcspkr, "PC Speaker Playback Switch"),
129 };
130
131 static int __devinit snd_pcsp_ctls_add(struct snd_pcsp *chip,
132         struct snd_kcontrol_new *ctls, int num)
133 {
134         int i, err;
135         struct snd_card *card = chip->card;
136         for (i = 0; i < num; i++) {
137                 err = snd_ctl_add(card, snd_ctl_new1(ctls + i, chip));
138                 if (err < 0)
139                         return err;
140         }
141         return 0;
142 }
143
144 int __devinit snd_pcsp_new_mixer(struct snd_pcsp *chip, int nopcm)
145 {
146         int err;
147         struct snd_card *card = chip->card;
148
149         if (!nopcm) {
150                 err = snd_pcsp_ctls_add(chip, snd_pcsp_controls_pcm,
151                         ARRAY_SIZE(snd_pcsp_controls_pcm));
152                 if (err < 0)
153                         return err;
154         }
155         err = snd_pcsp_ctls_add(chip, snd_pcsp_controls_spkr,
156                 ARRAY_SIZE(snd_pcsp_controls_spkr));
157         if (err < 0)
158                 return err;
159
160         strcpy(card->mixername, "PC-Speaker");
161
162         return 0;
163 }