[ALSA] hda-codec - Get subsystem ID from AFG/MFG
Modules: HDA Codec driver
Get subsytem ID from AFG/MFG if not obtained from the root node.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 3815403..57b5a0a 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -518,6 +518,13 @@
return -ENODEV;
}
+ if (! codec->subsystem_id) {
+ hda_nid_t nid = codec->afg ? codec->afg : codec->mfg;
+ codec->subsystem_id = snd_hda_codec_read(codec, nid, 0,
+ AC_VERB_GET_SUBSYSTEM_ID,
+ 0);
+ }
+
codec->preset = find_codec_preset(codec);
if (! *bus->card->mixername)
snd_hda_get_codec_name(codec, bus->card->mixername,
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index bb53bcf..1179d6c 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -79,6 +79,8 @@
#define AC_VERB_GET_GPIO_MASK 0x0f16
#define AC_VERB_GET_GPIO_DIRECTION 0x0f17
#define AC_VERB_GET_CONFIG_DEFAULT 0x0f1c
+/* f20: AFG/MFG */
+#define AC_VERB_GET_SUBSYSTEM_ID 0x0f20
/*
* SET verbs