diff options
Diffstat (limited to 'sound/drivers/pcsp/pcsp_mixer.c')
| -rw-r--r-- | sound/drivers/pcsp/pcsp_mixer.c | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/sound/drivers/pcsp/pcsp_mixer.c b/sound/drivers/pcsp/pcsp_mixer.c new file mode 100644 index 000000000..da33e5b62 --- /dev/null +++ b/sound/drivers/pcsp/pcsp_mixer.c @@ -0,0 +1,164 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * PC-Speaker driver for Linux + * + * Mixer implementation. + * Copyright (C) 2001-2008 Stas Sergeev + */ + +#include <sound/core.h> +#include <sound/control.h> +#include "pcsp.h" + + +static int pcsp_enable_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; + uinfo->count = 1; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = 1; + return 0; +} + +static int pcsp_enable_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol); + ucontrol->value.integer.value[0] = chip->enable; + return 0; +} + +static int pcsp_enable_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol); + int changed = 0; + int enab = ucontrol->value.integer.value[0]; + if (enab != chip->enable) { + chip->enable = enab; + changed = 1; + } + return changed; +} + +static int pcsp_treble_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol); + uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; + uinfo->count = 1; + uinfo->value.enumerated.items = chip->max_treble + 1; + if (uinfo->value.enumerated.item > chip->max_treble) + uinfo->value.enumerated.item = chip->max_treble; + sprintf(uinfo->value.enumerated.name, "%lu", + (unsigned long)PCSP_CALC_RATE(uinfo->value.enumerated.item)); + return 0; +} + +static int pcsp_treble_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol); + ucontrol->value.enumerated.item[0] = chip->treble; + return 0; +} + +static int pcsp_treble_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol); + int changed = 0; + int treble = ucontrol->value.enumerated.item[0]; + if (treble != chip->treble) { + chip->treble = treble; +#if PCSP_DEBUG + printk(KERN_INFO "PCSP: rate set to %li\n", PCSP_RATE()); +#endif + changed = 1; + } + return changed; +} + +static int pcsp_pcspkr_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; + uinfo->count = 1; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = 1; + return 0; +} + +static int pcsp_pcspkr_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol); + ucontrol->value.integer.value[0] = chip->pcspkr; + return 0; +} + +static int pcsp_pcspkr_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol); + int changed = 0; + int spkr = ucontrol->value.integer.value[0]; + if (spkr != chip->pcspkr) { + chip->pcspkr = spkr; + changed = 1; + } + return changed; +} + +#define PCSP_MIXER_CONTROL(ctl_type, ctl_name) \ +{ \ + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ + .name = ctl_name, \ + .info = pcsp_##ctl_type##_info, \ + .get = pcsp_##ctl_type##_get, \ + .put = pcsp_##ctl_type##_put, \ +} + +static const struct snd_kcontrol_new snd_pcsp_controls_pcm[] = { + PCSP_MIXER_CONTROL(enable, "Master Playback Switch"), + PCSP_MIXER_CONTROL(treble, "BaseFRQ Playback Volume"), +}; + +static const struct snd_kcontrol_new snd_pcsp_controls_spkr[] = { + PCSP_MIXER_CONTROL(pcspkr, "Beep Playback Switch"), +}; + +static int snd_pcsp_ctls_add(struct snd_pcsp *chip, + const struct snd_kcontrol_new *ctls, int num) +{ + int i, err; + struct snd_card *card = chip->card; + for (i = 0; i < num; i++) { + err = snd_ctl_add(card, snd_ctl_new1(ctls + i, chip)); + if (err < 0) + return err; + } + return 0; +} + +int snd_pcsp_new_mixer(struct snd_pcsp *chip, int nopcm) +{ + int err; + struct snd_card *card = chip->card; + + if (!nopcm) { + err = snd_pcsp_ctls_add(chip, snd_pcsp_controls_pcm, + ARRAY_SIZE(snd_pcsp_controls_pcm)); + if (err < 0) + return err; + } + err = snd_pcsp_ctls_add(chip, snd_pcsp_controls_spkr, + ARRAY_SIZE(snd_pcsp_controls_spkr)); + if (err < 0) + return err; + + strcpy(card->mixername, "PC-Speaker"); + + return 0; +} |