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164 lines
4.0 KiB
164 lines
4.0 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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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 const struct snd_kcontrol_new snd_pcsp_controls_pcm[] = { |
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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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}; |
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static const struct snd_kcontrol_new snd_pcsp_controls_spkr[] = { |
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PCSP_MIXER_CONTROL(pcspkr, "Beep Playback Switch"), |
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}; |
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static int snd_pcsp_ctls_add(struct snd_pcsp *chip, |
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const struct snd_kcontrol_new *ctls, int num) |
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{ |
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int i, err; |
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struct snd_card *card = chip->card; |
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for (i = 0; i < num; i++) { |
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err = snd_ctl_add(card, snd_ctl_new1(ctls + i, chip)); |
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if (err < 0) |
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return err; |
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} |
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return 0; |
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} |
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int snd_pcsp_new_mixer(struct snd_pcsp *chip, int nopcm) |
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{ |
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int err; |
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struct snd_card *card = chip->card; |
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if (!nopcm) { |
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err = snd_pcsp_ctls_add(chip, snd_pcsp_controls_pcm, |
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ARRAY_SIZE(snd_pcsp_controls_pcm)); |
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if (err < 0) |
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return err; |
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} |
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err = snd_pcsp_ctls_add(chip, snd_pcsp_controls_spkr, |
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ARRAY_SIZE(snd_pcsp_controls_spkr)); |
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if (err < 0) |
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return err; |
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strcpy(card->mixername, "PC-Speaker"); |
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return 0; |
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}
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