From: Takashi Iwai <tiwai@suse.de>
Date: Tue, 11 Oct 2005 13:05:54 +0000 (+0200)
Subject: [ALSA] hda-codec - Get subsystem ID from AFG/MFG
X-Git-Tag: v2.6.15-rc1~451^2~48
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=86284e458b48ffb6f9849673880f8342dee5b76a;p=linux.git

[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 3815403ed095..57b5a0a83c8d 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -518,6 +518,13 @@ int snd_hda_codec_new(struct hda_bus *bus, unsigned int codec_addr,
 		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 bb53bcf76742..1179d6cfa82a 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -79,6 +79,8 @@ enum {
 #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