1 /*
2 * Mixer Interface - AC97 simple abstact module
3 * Copyright (c) 2005 by Jaroslav Kysela <perex@perex.cz>
4 *
5 *
6 * This library is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU Lesser General Public License as
8 * published by the Free Software Foundation; either version 2.1 of
9 * the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 *
20 */
21
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <unistd.h>
25 #include <string.h>
26 #include <fcntl.h>
27 #include <sys/ioctl.h>
28 #include <math.h>
29 #include "asoundlib.h"
30 #include "mixer_abst.h"
31 #include "sbase.h"
32
33 static struct sm_elem_ops simple_ac97_ops;
34
35 struct melem_sids sids[] = {
36 {
37 .sid = SID_MASTER,
38 .sname = "Master",
39 .sindex = 0,
40 .weight = 1,
41 .chanmap = { 3, 0 },
42 .sops = &simple_ac97_ops,
43 }
44 };
45
46 #define SELECTORS (sizeof(selectors)/sizeof(selectors[0]))
47
48 struct helem_selector selectors[] = {
49 {
50 .iface = SND_CTL_ELEM_IFACE_MIXER,
51 .name = "Master Playback Volume",
52 .index = 0,
53 .sid = SID_MASTER,
54 .purpose = PURPOSE_VOLUME,
55 .caps = SM_CAP_PVOLUME,
56 },
57 {
58 .iface = SND_CTL_ELEM_IFACE_MIXER,
59 .name = "Master Playback Switch",
60 .index = 0,
61 .sid = SID_MASTER,
62 .purpose = PURPOSE_SWITCH,
63 .caps = SM_CAP_PSWITCH,
64 }
65 };
66
alsa_mixer_simple_event(snd_mixer_class_t * class,unsigned int mask,snd_hctl_elem_t * helem,snd_mixer_elem_t * melem)67 int alsa_mixer_simple_event(snd_mixer_class_t *class, unsigned int mask,
68 snd_hctl_elem_t *helem, snd_mixer_elem_t *melem)
69 {
70 struct bclass_private *priv = snd_mixer_sbasic_get_private(class);
71 return priv->ops.event(class, mask, helem, melem);
72 }
73
alsa_mixer_simple_init(snd_mixer_class_t * class)74 int alsa_mixer_simple_init(snd_mixer_class_t *class)
75 {
76 struct bclass_base_ops *ops;
77 int err;
78
79 err = mixer_simple_basic_dlopen(class, &ops);
80 if (err < 0)
81 return 0;
82 err = ops->selreg(class, selectors, SELECTORS);
83 if (err < 0)
84 return err;
85 err = ops->sidreg(class, sids, SELECTORS);
86 if (err < 0)
87 return err;
88 return 0;
89 }
90