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Commit 6a05ac4a authored by Takashi Iwai's avatar Takashi Iwai
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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: default avatarTakashi Iwai <tiwai@suse.de>
parent 9b5f12e5

sound/pci/hda/patch_realtek.c

+19 −3
Original line number Diff line number Diff line
@@ -279,6 +279,7 @@ struct alc_spec { 
					 * 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 void alc880_auto_init_analog_input(struct hda_codec *codec)













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 @@ static int alc880_parse_auto_config(struct hda_codec *codec)



























	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;