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, "%d", PCSP_RATE());
  54         return 0;
  55 }
  56
  57 static 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
  65 static 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
  81 static 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
  91 static 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
  99 static 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
 121 static 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
 127 int __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 }