LXR linux/sound/pci/au88x0/au88x0

   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
  14static 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
  23static 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