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ALSA: hda/realtek - Improve the signel-connection check

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When the connections from the pin selector contain only two
widgets, a route to DAC and the aa-mixer, it's certainly a
single connection.  In such a case, get_dac_if_single() should
return the connected DAC, too.

This will improve the detection of the individual DAC
assignment for each pin.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2012-02-16 17:23:46 +01:00
parent 00bc0ce913
commit 140547ef4e
1 changed files with 5 additions and 1 deletions
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6
sound/pci/hda/patch_realtek.c
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@ -2972,8 +2972,12 @@ static bool alc_auto_is_dac_reachable(struct hda_codec *codec,
static hda_nid_t get_dac_if_single(struct hda_codec *codec, hda_nid_t pin)
{
struct alc_spec *spec = codec->spec;
hda_nid_t sel = alc_go_down_to_selector(codec, pin);
if (snd_hda_get_conn_list(codec, sel, NULL) == 1)
hda_nid_t srcs[5];
int num = snd_hda_get_connections(codec, sel, srcs,
ARRAY_SIZE(srcs));
if (num == 1 || (num == 2 && srcs[1] == spec->mixer_nid))
return alc_auto_look_for_dac(codec, pin);
return 0;
}