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[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>
This commit is contained in:
Takashi Iwai 2005-10-11 15:05:54 +02:00 committed by Jaroslav Kysela
parent 93b9f42637
commit 86284e458b
2 changed files with 9 additions and 0 deletions
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7
sound/pci/hda/hda_codec.c
View File

@ -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,

2
sound/pci/hda/hda_codec.h
View File

@ -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