]>
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 | ||
a42dd420 | 50 | static 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 | } |