/proc/asound/card?/eld* missing

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I've confirmed that hda_eld.c is compiled and linked into snd_hda_codec_hdmi,
which is compiled into the kernel (Linus' master branch).

But the eld file does not appear in /proc/asound.

Also, the card?/codec#? file lists only:

,----
| Default PCM:
|     rates [0x60]: 44100 48000
|     bits [0x2]: 16
|     formats [0x1]: PCM
`----

whereas the EDID reports:

,----
|   Audio data block
|     Linear Pulse Code Modulation (LPCM) (2 channel(s))
|         Frequencies: 32kHz 44kHz 48kHz 88kHz 96kHz 176kHz 192kHz 
|         LPCM Bit Depths: 16, 20
|   Speaker allocation data block
|     Front Left+Right
`----

Audio to the display works, and I don't strictly /need/ the higher bit
depth or sample frequencies, but it seems to be a related symptom.  And
32kHz support would be welcome for some tasks.

Where should I look to debug this and get the eld file to show?

-JimC
-- 
James Cloos <cloos@xxxxxxxxxxx>         OpenPGP: 1024D/ED7DAEA6

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