ALSA: hda - Add function id to proc output

This patch does two things:
 Output Intel HDA Function Id in /proc/asound/cardX/codec#X
 Align Vendor/Subsystem/Revision Ids to 8 characters, front-padded with zeros

Before:
 Vendor Id: 0x11d41884
 Subsystem Id: 0x103c281a
 Revision Id: 0x100100

After:
 Function Id: 0x1
 Vendor Id: 0x11d41884
 Subsystem Id: 0x103c281a
 Revision Id: 0x0100100

As report on the Kernel Bugzilla #12888

Signed-off-by: Pascal de Bruijn <pascal@unilogicnetworks.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

3 files changed, 7 insertions, 5 deletions

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index b90a2400f53d..1b5575ecb0a4 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -647,9 +647,9 @@ static void /*__devinit*/ setup_fg_nodes(struct hda_codec *codec)
 
         total_nodes = snd_hda_get_sub_nodes(codec, AC_NODE_ROOT, &nid);
         for (i = 0; i < total_nodes; i++, nid++) {
-                unsigned int func;
-                func = snd_hda_param_read(codec, nid, AC_PAR_FUNCTION_TYPE);
-                switch (func & 0xff) {
+                codec->function_id = snd_hda_param_read(codec, nid,
+                                                AC_PAR_FUNCTION_TYPE) & 0xff;
+                switch (codec->function_id) {
                 case AC_GRP_AUDIO_FUNCTION:
                         codec->afg = nid;
                         break;
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index 079e1ab718d4..2fdecf4b0eb6 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -739,6 +739,7 @@ struct hda_codec {
         hda_nid_t mfg;  /* MFG node id */
 
         /* ids */
+        u32 function_id;
         u32 vendor_id;
         u32 subsystem_id;
         u32 revision_id;
diff --git a/sound/pci/hda/hda_proc.c b/sound/pci/hda/hda_proc.c
index 639cf0edaa98..93d7499350c6 100644
--- a/sound/pci/hda/hda_proc.c
+++ b/sound/pci/hda/hda_proc.c
@@ -469,8 +469,9 @@ static void print_codec_info(struct snd_info_entry *entry,
         snd_iprintf(buffer, "Codec: %s\n",
                     codec->name ? codec->name : "Not Set");
         snd_iprintf(buffer, "Address: %d\n", codec->addr);
-        snd_iprintf(buffer, "Vendor Id: 0x%x\n", codec->vendor_id);
-        snd_iprintf(buffer, "Subsystem Id: 0x%x\n", codec->subsystem_id);
+        snd_iprintf(buffer, "Function Id: 0x%x\n", codec->function_id);
+        snd_iprintf(buffer, "Vendor Id: 0x%08x\n", codec->vendor_id);
+        snd_iprintf(buffer, "Subsystem Id: 0x%08x\n", codec->subsystem_id);
         snd_iprintf(buffer, "Revision Id: 0x%x\n", codec->revision_id);
 
         if (codec->mfg)