projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| 1da177e4 LT |
2 | /* |
| 3 | * OPL4 mixer functions | |
| 4 | * Copyright (c) 2003 by Clemens Ladisch <clemens@ladisch.de> | |
| 1da177e4 LT |
5 | */ |
| 6 | ||
| 7 | #include "opl4_local.h" | |
| 8 | #include <sound/control.h> | |
| 9 | ||
| a42dd420 | 10 | static int snd_opl4_ctl_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) |
| 1da177e4 LT |
11 | { |
| 12 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
| 13 | uinfo->count = 2; | |
| 14 | uinfo->value.integer.min = 0; | |
| 15 | uinfo->value.integer.max = 7; | |
| 16 | return 0; | |
| 17 | } | |
| 18 | ||
| a42dd420 | 19 | static int snd_opl4_ctl_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
| 1da177e4 | 20 | { |
| a42dd420 | 21 | struct snd_opl4 *opl4 = snd_kcontrol_chip(kcontrol); |
| 1da177e4 LT |
22 | unsigned long flags; |
| 23 | u8 reg = kcontrol->private_value; | |
| 24 | u8 value; | |
| 25 | ||
| 26 | spin_lock_irqsave(&opl4->reg_lock, flags); | |
| 27 | value = snd_opl4_read(opl4, reg); | |
| 28 | spin_unlock_irqrestore(&opl4->reg_lock, flags); | |
| 29 | ucontrol->value.integer.value[0] = 7 - (value & 7); | |
| 30 | ucontrol->value.integer.value[1] = 7 - ((value >> 3) & 7); | |
| 31 | return 0; | |
| 32 | } | |
| 33 | ||
| a42dd420 | 34 | static int snd_opl4_ctl_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
| 1da177e4 | 35 | { |
| a42dd420 | 36 | struct snd_opl4 *opl4 = snd_kcontrol_chip(kcontrol); |
| 1da177e4 LT |
37 | unsigned long flags; |
| 38 | u8 reg = kcontrol->private_value; | |
| 39 | u8 value, old_value; | |
| 40 | ||
| 41 | value = (7 - (ucontrol->value.integer.value[0] & 7)) | | |
| 42 | ((7 - (ucontrol->value.integer.value[1] & 7)) << 3); | |
| 43 | spin_lock_irqsave(&opl4->reg_lock, flags); | |
| 44 | old_value = snd_opl4_read(opl4, reg); | |
| 45 | snd_opl4_write(opl4, reg, value); | |
| 46 | spin_unlock_irqrestore(&opl4->reg_lock, flags); | |
| 47 | return value != old_value; | |
| 48 | } | |
| 49 | ||
| 2eccd408 | 50 | static const struct snd_kcontrol_new snd_opl4_controls[] = { |
| 1da177e4 LT |
51 | { |
| 52 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
| 53 | .name = "FM Playback Volume", | |
| 54 | .info = snd_opl4_ctl_info, | |
| 55 | .get = snd_opl4_ctl_get, | |
| 56 | .put = snd_opl4_ctl_put, | |
| 57 | .private_value = OPL4_REG_MIX_CONTROL_FM | |
| 58 | }, | |
| 59 | { | |
| 60 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
| 61 | .name = "Wavetable Playback Volume", | |
| 62 | .info = snd_opl4_ctl_info, | |
| 63 | .get = snd_opl4_ctl_get, | |
| 64 | .put = snd_opl4_ctl_put, | |
| 65 | .private_value = OPL4_REG_MIX_CONTROL_PCM | |
| 66 | } | |
| 67 | }; | |
| 68 | ||
| a42dd420 | 69 | int snd_opl4_create_mixer(struct snd_opl4 *opl4) |
| 1da177e4 | 70 | { |
| a42dd420 | 71 | struct snd_card *card = opl4->card; |
| 1da177e4 LT |
72 | int i, err; |
| 73 | ||
| 74 | strcat(card->mixername, ",OPL4"); | |
| 75 | ||
| 76 | for (i = 0; i < 2; ++i) { | |
| 77 | err = snd_ctl_add(card, snd_ctl_new1(&snd_opl4_controls[i], opl4)); | |
| 78 | if (err < 0) | |
| 79 | return err; | |
| 80 | } | |
| 81 | return 0; | |
| 82 | } |