ALSA: hda - Support multiple digital outs with auto-probing
Added the support of multiple digital outputs via auto-probing for
Realtek ALC88x codecs. The multiple outputs are handled as slave
streams, so only one PCM stream (and the corresponding IEC958*
elements) is provided to control both digital outputs.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index ef9b7ee..244de59 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -279,6 +279,7 @@
* dig_out_nid and hp_nid are optional
*/
hda_nid_t alt_dac_nid;
+ hda_nid_t slave_dig_outs[3]; /* optional - for auto-parsing */
int dig_out_type;
/* capture */
@@ -4269,7 +4270,7 @@
static int alc880_parse_auto_config(struct hda_codec *codec)
{
struct alc_spec *spec = codec->spec;
- int err;
+ int i, err;
static hda_nid_t alc880_ignore[] = { 0x1d, 0 };
err = snd_hda_parse_pin_def_config(codec, &spec->autocfg,
@@ -4300,8 +4301,23 @@
spec->multiout.max_channels = spec->multiout.num_dacs * 2;
- if (spec->autocfg.dig_outs)
- spec->multiout.dig_out_nid = ALC880_DIGOUT_NID;
+ /* check multiple SPDIF-out (for recent codecs) */
+ for (i = 0; i < spec->autocfg.dig_outs; i++) {
+ hda_nid_t dig_nid;
+ err = snd_hda_get_connections(codec,
+ spec->autocfg.dig_out_pins[i],
+ &dig_nid, 1);
+ if (err < 0)
+ continue;
+ if (!i)
+ spec->multiout.dig_out_nid = dig_nid;
+ else {
+ spec->multiout.slave_dig_outs = spec->slave_dig_outs;
+ spec->slave_dig_outs[i - 1] = dig_nid;
+ if (i == ARRAY_SIZE(spec->slave_dig_outs) - 1)
+ break;
+ }
+ }
if (spec->autocfg.dig_in_pin)
spec->dig_in_nid = ALC880_DIGIN_NID;