[AMDGPU][TAHITI XT] new display code

[Alex Deucher]

On Mon, Jan 29, 2018 at 3:34 PM,  <sylvain.bertrand at gmail.com> wrote:
> On Mon, Jan 29, 2018 at 02:39:53PM -0500, Alex Deucher wrote:
>> On Mon, Jan 29, 2018 at 2:31 PM,  <sylvain.bertrand at gmail.com> wrote:
>> > On Mon, Jan 29, 2018 at 01:58:46PM -0500, Alex Deucher wrote:
>> >> It's similar, but there is still a bunch of DCE specific code.  No one
>> >> has written that DC code for DCE 6 yet.  One could use the DC DCE8
>> >> code as a guide, but it still has to be done.
>> >
>> > I have not checked the new code, but does it mean the atombios is gone for DCE
>> > programming?
>>
>> It's still there. Even with atombios, there is still a bunch of DCE
>> specific programming required (page flips, interrupts, hotplug,
>> watermarks, LUTs, cursors, etc.).  DC also adds support for a bunch of
>> new features that are were not supported by either atombios or the old
>> modesetting code (regamma/CTM, DP/HDMI audio, dchub programming for
>> display buffers in system memory for APUs, etc.).
>
> As far as I can remember, not for the new features ofc, DCE programming for GCN1
> is very similar if not mostly the same than DCE programming for GCN1.1/2 which
> is supported by the new DC code.
>
> Is this planned?

Right, as I said, you could definitely leverage the support for DCE8
in DC.  The blocks are very similar.  At the moment, we have no plans
to implement DC support for DCE6.

Alex