145 lines
3.6 KiB
C
145 lines
3.6 KiB
C
/*
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* PC-Speaker driver for Linux
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*
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* Mixer implementation.
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* Copyright (C) 2001-2008 Stas Sergeev
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*/
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#include <sound/core.h>
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#include <sound/control.h>
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#include "pcsp.h"
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static int pcsp_enable_info(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_info *uinfo)
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{
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uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
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uinfo->count = 1;
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uinfo->value.integer.min = 0;
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uinfo->value.integer.max = 1;
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return 0;
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}
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static int pcsp_enable_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
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ucontrol->value.integer.value[0] = chip->enable;
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return 0;
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}
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static int pcsp_enable_put(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
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int changed = 0;
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int enab = ucontrol->value.integer.value[0];
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if (enab != chip->enable) {
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chip->enable = enab;
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changed = 1;
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}
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return changed;
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}
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static int pcsp_treble_info(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_info *uinfo)
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{
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struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
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uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
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uinfo->count = 1;
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uinfo->value.enumerated.items = chip->max_treble + 1;
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if (uinfo->value.enumerated.item > chip->max_treble)
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uinfo->value.enumerated.item = chip->max_treble;
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sprintf(uinfo->value.enumerated.name, "%lu",
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(unsigned long)PCSP_CALC_RATE(uinfo->value.enumerated.item));
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return 0;
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}
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static int pcsp_treble_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
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ucontrol->value.enumerated.item[0] = chip->treble;
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return 0;
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}
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static int pcsp_treble_put(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
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int changed = 0;
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int treble = ucontrol->value.enumerated.item[0];
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if (treble != chip->treble) {
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chip->treble = treble;
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#if PCSP_DEBUG
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printk(KERN_INFO "PCSP: rate set to %li\n", PCSP_RATE());
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#endif
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changed = 1;
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}
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return changed;
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}
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static int pcsp_pcspkr_info(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_info *uinfo)
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{
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uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
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uinfo->count = 1;
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uinfo->value.integer.min = 0;
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uinfo->value.integer.max = 1;
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return 0;
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}
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static int pcsp_pcspkr_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
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ucontrol->value.integer.value[0] = chip->pcspkr;
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return 0;
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}
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static int pcsp_pcspkr_put(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol);
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int changed = 0;
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int spkr = ucontrol->value.integer.value[0];
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if (spkr != chip->pcspkr) {
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chip->pcspkr = spkr;
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changed = 1;
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}
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return changed;
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}
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#define PCSP_MIXER_CONTROL(ctl_type, ctl_name) \
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{ \
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
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.name = ctl_name, \
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.info = pcsp_##ctl_type##_info, \
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.get = pcsp_##ctl_type##_get, \
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.put = pcsp_##ctl_type##_put, \
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}
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static struct snd_kcontrol_new __devinitdata snd_pcsp_controls[] = {
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PCSP_MIXER_CONTROL(enable, "Master Playback Switch"),
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PCSP_MIXER_CONTROL(treble, "BaseFRQ Playback Volume"),
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PCSP_MIXER_CONTROL(pcspkr, "PC Speaker Playback Switch"),
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};
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int __devinit snd_pcsp_new_mixer(struct snd_pcsp *chip)
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{
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struct snd_card *card = chip->card;
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int i, err;
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for (i = 0; i < ARRAY_SIZE(snd_pcsp_controls); i++) {
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err = snd_ctl_add(card,
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snd_ctl_new1(snd_pcsp_controls + i,
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chip));
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if (err < 0)
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return err;
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}
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strcpy(card->mixername, "PC-Speaker");
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return 0;
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}
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