projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * OPL4 mixer functions | |
| 3 | * Copyright (c) 2003 by Clemens Ladisch <clemens@ladisch.de> | |
| 4 | * | |
| 5 | * This program is free software; you can redistribute it and/or modify | |
| 6 | * it under the terms of the GNU General Public License as published by | |
| 7 | * the Free Software Foundation; either version 2 of the License, or | |
| 8 | * (at your option) any later version. | |
| 9 | * | |
| 10 | * This program is distributed in the hope that it will be useful, | |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 | * GNU General Public License for more details. | |
| 14 | * | |
| 15 | * You should have received a copy of the GNU General Public License | |
| 16 | * along with this program; if not, write to the Free Software | |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | */ | |
| 19 | ||
| 20 | #include "opl4_local.h" | |
| 21 | #include <sound/control.h> | |
| 22 | ||
| a42dd420 | 23 | static int snd_opl4_ctl_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) |
| 1da177e4 LT |
24 | { |
| 25 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
| 26 | uinfo->count = 2; | |
| 27 | uinfo->value.integer.min = 0; | |
| 28 | uinfo->value.integer.max = 7; | |
| 29 | return 0; | |
| 30 | } | |
| 31 | ||
| a42dd420 | 32 | static int snd_opl4_ctl_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
| 1da177e4 | 33 | { |
| a42dd420 | 34 | struct snd_opl4 *opl4 = snd_kcontrol_chip(kcontrol); |
| 1da177e4 LT |
35 | unsigned long flags; |
| 36 | u8 reg = kcontrol->private_value; | |
| 37 | u8 value; | |
| 38 | ||
| 39 | spin_lock_irqsave(&opl4->reg_lock, flags); | |
| 40 | value = snd_opl4_read(opl4, reg); | |
| 41 | spin_unlock_irqrestore(&opl4->reg_lock, flags); | |
| 42 | ucontrol->value.integer.value[0] = 7 - (value & 7); | |
| 43 | ucontrol->value.integer.value[1] = 7 - ((value >> 3) & 7); | |
| 44 | return 0; | |
| 45 | } | |
| 46 | ||
| a42dd420 | 47 | static int snd_opl4_ctl_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
| 1da177e4 | 48 | { |
| a42dd420 | 49 | struct snd_opl4 *opl4 = snd_kcontrol_chip(kcontrol); |
| 1da177e4 LT |
50 | unsigned long flags; |
| 51 | u8 reg = kcontrol->private_value; | |
| 52 | u8 value, old_value; | |
| 53 | ||
| 54 | value = (7 - (ucontrol->value.integer.value[0] & 7)) | | |
| 55 | ((7 - (ucontrol->value.integer.value[1] & 7)) << 3); | |
| 56 | spin_lock_irqsave(&opl4->reg_lock, flags); | |
| 57 | old_value = snd_opl4_read(opl4, reg); | |
| 58 | snd_opl4_write(opl4, reg, value); | |
| 59 | spin_unlock_irqrestore(&opl4->reg_lock, flags); | |
| 60 | return value != old_value; | |
| 61 | } | |
| 62 | ||
| a42dd420 | 63 | static struct snd_kcontrol_new snd_opl4_controls[] = { |
| 1da177e4 LT |
64 | { |
| 65 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
| 66 | .name = "FM Playback Volume", | |
| 67 | .info = snd_opl4_ctl_info, | |
| 68 | .get = snd_opl4_ctl_get, | |
| 69 | .put = snd_opl4_ctl_put, | |
| 70 | .private_value = OPL4_REG_MIX_CONTROL_FM | |
| 71 | }, | |
| 72 | { | |
| 73 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
| 74 | .name = "Wavetable Playback Volume", | |
| 75 | .info = snd_opl4_ctl_info, | |
| 76 | .get = snd_opl4_ctl_get, | |
| 77 | .put = snd_opl4_ctl_put, | |
| 78 | .private_value = OPL4_REG_MIX_CONTROL_PCM | |
| 79 | } | |
| 80 | }; | |
| 81 | ||
| a42dd420 | 82 | int snd_opl4_create_mixer(struct snd_opl4 *opl4) |
| 1da177e4 | 83 | { |
| a42dd420 | 84 | struct snd_card *card = opl4->card; |
| 1da177e4 LT |
85 | int i, err; |
| 86 | ||
| 87 | strcat(card->mixername, ",OPL4"); | |
| 88 | ||
| 89 | for (i = 0; i < 2; ++i) { | |
| 90 | err = snd_ctl_add(card, snd_ctl_new1(&snd_opl4_controls[i], opl4)); | |
| 91 | if (err < 0) | |
| 92 | return err; | |
| 93 | } | |
| 94 | return 0; | |
| 95 | } |