From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- sound/drivers/opl4/opl4_mixer.c | 95 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 95 insertions(+) create mode 100644 sound/drivers/opl4/opl4_mixer.c (limited to 'sound/drivers/opl4/opl4_mixer.c') diff --git a/sound/drivers/opl4/opl4_mixer.c b/sound/drivers/opl4/opl4_mixer.c new file mode 100644 index 00000000000..ec7a228fbe7 --- /dev/null +++ b/sound/drivers/opl4/opl4_mixer.c @@ -0,0 +1,95 @@ +/* + * 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(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *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(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol) +{ + opl4_t *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(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol) +{ + opl4_t *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 snd_kcontrol_new_t 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(opl4_t *opl4) +{ + snd_card_t *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; +} -- cgit v1.2.3