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review.evervolv.com / android_kernel_oneplus_msm8996 / a2826190aa157a1d29bef70ca81f8b51a9b36d29 / . / sound / drivers / pcsp / pcsp_mixer.c
blob: 64a695fef74e2417ed8e24ef683f5cbb24b7ccd9 [file] [log] [blame]
Stas Sergeev9ab4d072008-03-03 10:53:54 +0100[diff] [blame]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
13static 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
23static 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
31static 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
44static 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, "%d", PCSP_RATE());
54 return 0;
55}
56
57static int pcsp_treble_get(struct snd_kcontrol *kcontrol,
58 struct snd_ctl_elem_value *ucontrol)
59{
60 struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
61 ucontrol->value.enumerated.item[0] = chip->treble;
62 return 0;
63}
64
65static int pcsp_treble_put(struct snd_kcontrol *kcontrol,
66 struct snd_ctl_elem_value *ucontrol)
67{
68 struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
69 int changed = 0;
70 int treble = ucontrol->value.enumerated.item[0];
71 if (treble != chip->treble) {
72 chip->treble = treble;
73#if PCSP_DEBUG
74 printk(KERN_INFO "PCSP: rate set to %i\n", PCSP_RATE());
75#endif
76 changed = 1;
77 }
78 return changed;
79}
80
81static int pcsp_pcspkr_info(struct snd_kcontrol *kcontrol,
82 struct snd_ctl_elem_info *uinfo)
83{
84 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
85 uinfo->count = 1;
86 uinfo->value.integer.min = 0;
87 uinfo->value.integer.max = 1;
88 return 0;
89}
90
91static int pcsp_pcspkr_get(struct snd_kcontrol *kcontrol,
92 struct snd_ctl_elem_value *ucontrol)
93{
94 struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
95 ucontrol->value.integer.value[0] = chip->pcspkr;
96 return 0;
97}
98
99static int pcsp_pcspkr_put(struct snd_kcontrol *kcontrol,
100 struct snd_ctl_elem_value *ucontrol)
101{
102 struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
103 int changed = 0;
104 int spkr = ucontrol->value.integer.value[0];
105 if (spkr != chip->pcspkr) {
106 chip->pcspkr = spkr;
107 changed = 1;
108 }
109 return changed;
110}
111
112#define PCSP_MIXER_CONTROL(ctl_type, ctl_name) \
113{ \
114 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
115 .name = ctl_name, \
116 .info = pcsp_##ctl_type##_info, \
117 .get = pcsp_##ctl_type##_get, \
118 .put = pcsp_##ctl_type##_put, \
119}
120
121static struct snd_kcontrol_new __devinitdata snd_pcsp_controls[] = {
122 PCSP_MIXER_CONTROL(enable, "Master Playback Switch"),
123 PCSP_MIXER_CONTROL(treble, "BaseFRQ Playback Volume"),
124 PCSP_MIXER_CONTROL(pcspkr, "PC Speaker Playback Switch"),
125};
126
127int __devinit snd_pcsp_new_mixer(struct snd_pcsp *chip)
128{
129 struct snd_card *card = chip->card;
130 int i, err;
131
132 for (i = 0; i < ARRAY_SIZE(snd_pcsp_controls); i++) {
133 err = snd_ctl_add(card,
134 snd_ctl_new1(snd_pcsp_controls + i,
135 chip));
136 if (err < 0)
137 return err;
138 }
139
140 strcpy(card->mixername, "PC-Speaker");
141
142 return 0;
143}