static int add_vmaster(struct hda_codec *codec, hda_nid_t dac)
{
if(!codec)
return -1;
struct cs_spec *spec = codec->spec;
if(!spec)
return -1;
unsigned int tlv[4];
int err;
spec->vmaster_sw =
snd_ctl_make_virtual_master("Master Playback Switch", NULL);
if(!spec->vmaster_sw)
return -1;
err = snd_hda_ctl_add(codec, dac, spec->vmaster_sw);
if (err < 0)
return err;
snd_hda_set_vmaster_tlv(codec, dac, HDA_OUTPUT, tlv);
spec->vmaster_vol =
snd_ctl_make_virtual_master("Master Playback Volume", tlv);
if(!spec->vmaster_vol)
return -1;
err = snd_hda_ctl_add(codec, dac, spec->vmaster_vol);
if (err < 0)
return err;
return 0;
}
static int usb6fire_control_add_virtual(
struct control_runtime *rt,
struct snd_card *card,
char *name,
struct snd_kcontrol_new *elems)
{
int ret;
int i;
struct snd_kcontrol *vmaster =
snd_ctl_make_virtual_master(name, tlv_output);
struct snd_kcontrol *control;
if (!vmaster)
return -ENOMEM;
ret = snd_ctl_add(card, vmaster);
if (ret < 0)
return ret;
i = 0;
while (elems[i].name) {
control = snd_ctl_new1(&elems[i], rt);
if (!control)
return -ENOMEM;
ret = snd_ctl_add(card, control);
if (ret < 0)
return ret;
ret = snd_ctl_add_slave(vmaster, control);
if (ret < 0)
return ret;
i++;
}
return 0;
}
