[Bug 67051] No nouveau HDMI sound on NVIDIA GT430

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=67051

--- Comment #5 from Alex <alupu01-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
Hi Emil,

I applied the patch.  For reference:

[/linux-3.10.1/drivers/gpu/drm/nouveau/core/engine/disp]$ diff hdminva3.c-orig
hdminva3.c
56a57,60
>         nv_mask(priv, 0x61c5d0 + soff, 0x00070001, 0x00010001); /* SPARE,
>         HW_CTS */
>         nv_mask(priv, 0x61c568 + soff, 0x00010101, 0x00000000); /* ACR_CTRL,
>         ??
> */
>         nv_mask(priv, 0x61c578 + soff, 0x80000000, 0x80000000); /*
>         ACR_0441_ENABLE */
------------------------------------------------------------------------------
No cigar:

aplay -D plughw:1,x test.wav    # x = 3, 7, 8, _9_
NO SOUND

and

cat /proc/asound/card1/eld#3.0
monitor_present         1
eld_valid               0
-------------------------------
COMMENTS
I'm a little skeptical for two reasons:

1.  The patch (date, presentation) implies that everything was hunky-dory
until those guys on 3.10.1 did something.
Not true.  The nouveau HDMI sound has _never_ worked since 3.8.0 (when I
started paying attention.)

2.  I'm far from a kernel-, nouveau-, patch-, etc-. expert but common sense(?)
tells me that a mere three lines of code can't fix this problem which, again
common sense, looks a lot more intractable.  If I can offer an uneducated guess
nouveau should work first on this 'eld#3.0' to see it handling an EDID properly
(like NVIDIA did - see submission) in order to have a chance at competing with
the big boys (Nvidia, Windows) in the HDMI sound arena (although an elementary
and vital requirement/capability at this day and age).

I'm attaching the new dmesg and Xorg log for this patch attempt.

Thank you for your trying to help,
-- Alex

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