/* * OPL4 mixer functions * Copyright (c) 2003 by Clemens Ladisch * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "opl4_local.h" #include static int snd_opl4_ctl_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; uinfo->count = 2; uinfo->value.integer.min = 0; uinfo->value.integer.max = 7; return 0; } static int snd_opl4_ctl_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_opl4 *opl4 = snd_kcontrol_chip(kcontrol); unsigned long flags; u8 reg = kcontrol->private_value; u8 value; spin_lock_irqsave(&opl4->reg_lock, flags); value = snd_opl4_read(opl4, reg); spin_unlock_irqrestore(&opl4->reg_lock, flags); ucontrol->value.integer.value[0] = 7 - (value & 7); ucontrol->value.integer.value[1] = 7 - ((value >> 3) & 7); return 0; } static int snd_opl4_ctl_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_opl4 *opl4 = snd_kcontrol_chip(kcontrol); unsigned long flags; u8 reg = kcontrol->private_value; u8 value, old_value; value = (7 - (ucontrol->value.integer.value[0] & 7)) | ((7 - (ucontrol->value.integer.value[1] & 7)) << 3); spin_lock_irqsave(&opl4->reg_lock, flags); old_value = snd_opl4_read(opl4, reg); snd_opl4_write(opl4, reg, value); spin_unlock_irqrestore(&opl4->reg_lock, flags); return value != old_value; } static struct snd_kcontrol_new snd_opl4_controls[] = { { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "FM Playback Volume", .info = snd_opl4_ctl_info, .get = snd_opl4_ctl_get, .put = snd_opl4_ctl_put, .private_value = OPL4_REG_MIX_CONTROL_FM }, { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "Wavetable Playback Volume", .info = snd_opl4_ctl_info, .get = snd_opl4_ctl_get, .put = snd_opl4_ctl_put, .private_value = OPL4_REG_MIX_CONTROL_PCM } }; int snd_opl4_create_mixer(struct snd_opl4 *opl4) { struct snd_card *card = opl4->card; int i, err; strcat(card->mixername, ",OPL4"); for (i = 0; i < 2; ++i) { err = snd_ctl_add(card, snd_ctl_new1(&snd_opl4_controls[i], opl4)); if (err < 0) return err; } return 0; } th: root/sound/pci/cs46xx/cs46xx.h

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