1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Vortex Mixer support.
4 *
5 * There is much more than just the AC97 mixer...
6 *
7 */
8
9 #include <linux/time.h>
10 #include <linux/init.h>
11 #include <sound/core.h>
12 #include "au88x0.h"
13
14 static int remove_ctl(struct snd_card *card, const char *name)
15 {
16 struct snd_ctl_elem_id id;
17 memset(&id, 0, sizeof(id));
18 strcpy(id.name, name);
19 id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
20 return snd_ctl_remove_id(card, &id);
21 }
22
23 static int snd_vortex_mixer(vortex_t *vortex)
24 {
25 struct snd_ac97_bus *pbus;
26 struct snd_ac97_template ac97;
27 int err;
28 static const struct snd_ac97_bus_ops ops = {
29 .write = vortex_codec_write,
30 .read = vortex_codec_read,
31 };
32
33 err = snd_ac97_bus(vortex->card, 0, &ops, NULL, &pbus);
34 if (err < 0)
35 return err;
36 memset(&ac97, 0, sizeof(ac97));
37 // Initialize AC97 codec stuff.
38 ac97.private_data = vortex;
39 ac97.scaps = AC97_SCAP_NO_SPDIF;
40 err = snd_ac97_mixer(pbus, &ac97, &vortex->codec);
41 vortex->isquad = ((vortex->codec == NULL) ? 0 : (vortex->codec->ext_id&0x80));
42 remove_ctl(vortex->card, "Master Mono Playback Volume");
43 remove_ctl(vortex->card, "Master Mono Playback Switch");
44 return err;
45 }
46
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