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 
remove_ctl(struct snd_card * card,const char * name)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 
snd_vortex_mixer(vortex_t * vortex)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