diff options
Diffstat (limited to 'sound/pci/au88x0/au88x0_mixer.c')
| -rw-r--r-- | sound/pci/au88x0/au88x0_mixer.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/sound/pci/au88x0/au88x0_mixer.c b/sound/pci/au88x0/au88x0_mixer.c new file mode 100644 index 000000000..5b647682b --- /dev/null +++ b/sound/pci/au88x0/au88x0_mixer.c @@ -0,0 +1,44 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Vortex Mixer support. + * + * There is much more than just the AC97 mixer... + * + */ + +#include <linux/time.h> +#include <linux/init.h> +#include <sound/core.h> +#include "au88x0.h" + +static int remove_ctl(struct snd_card *card, const char *name) +{ + struct snd_ctl_elem_id id; + memset(&id, 0, sizeof(id)); + strcpy(id.name, name); + id.iface = SNDRV_CTL_ELEM_IFACE_MIXER; + return snd_ctl_remove_id(card, &id); +} + +static int snd_vortex_mixer(vortex_t *vortex) +{ + struct snd_ac97_bus *pbus; + struct snd_ac97_template ac97; + int err; + static const struct snd_ac97_bus_ops ops = { + .write = vortex_codec_write, + .read = vortex_codec_read, + }; + + if ((err = snd_ac97_bus(vortex->card, 0, &ops, NULL, &pbus)) < 0) + return err; + memset(&ac97, 0, sizeof(ac97)); + // Initialize AC97 codec stuff. + ac97.private_data = vortex; + ac97.scaps = AC97_SCAP_NO_SPDIF; + err = snd_ac97_mixer(pbus, &ac97, &vortex->codec); + vortex->isquad = ((vortex->codec == NULL) ? 0 : (vortex->codec->ext_id&0x80)); + remove_ctl(vortex->card, "Master Mono Playback Volume"); + remove_ctl(vortex->card, "Master Mono Playback Switch"); + return err; +} |