[Intel-gfx] [PATCH v5] drm/i915: pass ELD to HDMI/DP audio driver

[Christopher White]

There appears to be some issues with the patch? I'm on SandyBridge and 
using the HD3000's HDMI.

I've now tried manually merging the ELD patch (both files Wu Fengguang 
submitted) and compiling Kernel 3.0.4. I've also tried drm-intel-next 
Kernel 3.1 pre-built from 
http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-next/current/ as 
I knew it was built from keithp's latest drm-intel-next repository.

Both of these methods had the patch applied, yet neither were able to 
read the ELD correctly from my Onkyo TX-SR607 receiver.

If I manually dump the EDID from my receiver and analyze it with Monitor 
Asset Manager (by EnTech Taiwan), it shows that the ELD contains an 8 
channel specification up to 192 kHz, and that's what's being exposed 
over HDMI to the Intel graphics adapter, yet this isn't detected. It 
just plain isn't being read, and is falling back to the default 2ch 
16kHz configuration. It's exactly as it was in the past, before this 
patch attempt.

You can see my 256 byte EDID dump, straight from the receiver, over at:
http://www.pulseforce.com/node/edid.dump

It shows exactly what the receiver is exposing over HDMI, proving that 
it's not the device that's at fault.

Any ideas what's wrong? Here's the HDMI messages from the startup log:

HDMI status: Pin=7 Presence_Detect=1 ELD_Valid=1
HDMI: detected monitor  at connection type HDMI
HDMI: available speakers: FL/FR
HDMI: supports coding type LPCM: channels = 2, rates = 44100 48000 
88200, bits = 16
HDMI hot plug event: Pin=7 Presence_Detect=1 ELD_Valid=1
HDMI status: Pin=7 Presence_Detect=1 ELD_Valid=1
input: HDA Intel PCH HDMI/DP as 
/devices/pci0000:00/0000:00:1b.0/sound/card0/input9
HDMI: detected monitor  at connection type HDMI
HDMI: available speakers: FL/FR
HDMI: supports coding type LPCM: channels = 2, rates = 44100 48000 
88200, bits = 16
HDMI hot plug event: Pin=7 Presence_Detect=1 ELD_Valid=1
HDMI status: Pin=7 Presence_Detect=1 ELD_Valid=1
HDMI: detected monitor  at connection type HDMI
HDMI: available speakers: FL/FR
HDMI: supports coding type LPCM: channels = 2, rates = 44100 48000 
88200, bits = 16



Christopher White