[Nouveau] pre-nv50 KMS

[Luo Jinghua]

>> I'll try your tree once you published it. I get another issue, the DDX
>> driver don't hide the cursor on leaving vt and left the cursor on my
>> fb console. It may be already fixed in your local tree.
> Mmm, the DDX I was using was the same as what's now in git, so it'd be
> something on the kernel side.  The cursor was hidden for me when I
> dropped back to a console however.
>

I did add some debug prints to drmmode_display.c. On leaving vt,
drmmode_hide_cursor never be called, the cursor isn't hidden.
I think it should be a right fix by adding xf86_hide_cursors into NVLeaveVT.
I have checked the intel driver. They also disable cursors on leaving vt.
I attached a patch which implements this idea.

> Testing would be good though, I don't have a (working) pre-nv5x laptop
> to test LVDS on anymore.  Otherwise, from nv4 right through to nv4x
> seems good.
>

I happen to have a nv40 laptop. I'm happy to test your kms tree on my laptop:).

-- 
Luo Jinghua
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