diff options
Diffstat (limited to 'sound/pci/hda/hda_codec.c')
| -rw-r--r-- | sound/pci/hda/hda_codec.c | 35 |
1 files changed, 33 insertions, 2 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 37c413923db..ab3bb7997cd 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -1037,16 +1037,24 @@ void snd_hda_set_vmaster_tlv(struct hda_codec *codec, hda_nid_t nid, int dir, } /* find a mixer control element with the given name */ -struct snd_kcontrol *snd_hda_find_mixer_ctl(struct hda_codec *codec, - const char *name) +static struct snd_kcontrol * +_snd_hda_find_mixer_ctl(struct hda_codec *codec, + const char *name, int idx) { struct snd_ctl_elem_id id; memset(&id, 0, sizeof(id)); id.iface = SNDRV_CTL_ELEM_IFACE_MIXER; + id.index = idx; strcpy(id.name, name); return snd_ctl_find_id(codec->bus->card, &id); } +struct snd_kcontrol *snd_hda_find_mixer_ctl(struct hda_codec *codec, + const char *name) +{ + return _snd_hda_find_mixer_ctl(codec, name, 0); +} + /* create a virtual master control and add slaves */ int snd_hda_add_vmaster(struct hda_codec *codec, char *name, unsigned int *tlv, const char **slaves) @@ -1481,6 +1489,8 @@ static struct snd_kcontrol_new dig_mixes[] = { { } /* end */ }; +#define SPDIF_MAX_IDX 4 /* 4 instances should be enough to probe */ + /** * snd_hda_create_spdif_out_ctls - create Output SPDIF-related controls * @codec: the HDA codec @@ -1496,9 +1506,20 @@ int snd_hda_create_spdif_out_ctls(struct hda_codec *codec, hda_nid_t nid) int err; struct snd_kcontrol *kctl; struct snd_kcontrol_new *dig_mix; + int idx; + for (idx = 0; idx < SPDIF_MAX_IDX; idx++) { + if (!_snd_hda_find_mixer_ctl(codec, "IEC958 Playback Switch", + idx)) + break; + } + if (idx >= SPDIF_MAX_IDX) { + printk(KERN_ERR "hda_codec: too many IEC958 outputs\n"); + return -EBUSY; + } for (dig_mix = dig_mixes; dig_mix->name; dig_mix++) { kctl = snd_ctl_new1(dig_mix, codec); + kctl->id.index = idx; kctl->private_value = nid; err = snd_ctl_add(codec->bus->card, kctl); if (err < 0) @@ -1595,7 +1616,17 @@ int snd_hda_create_spdif_in_ctls(struct hda_codec *codec, hda_nid_t nid) int err; struct snd_kcontrol *kctl; struct snd_kcontrol_new *dig_mix; + int idx; + for (idx = 0; idx < SPDIF_MAX_IDX; idx++) { + if (!_snd_hda_find_mixer_ctl(codec, "IEC958 Capture Switch", + idx)) + break; + } + if (idx >= SPDIF_MAX_IDX) { + printk(KERN_ERR "hda_codec: too many IEC958 inputs\n"); + return -EBUSY; + } for (dig_mix = dig_in_ctls; dig_mix->name; dig_mix++) { kctl = snd_ctl_new1(dig_mix, codec); kctl->private_value = nid; |