[Freedreno] adreno 430/431 support (msm8x94)

[Rob Clark]

ok, I'll see if I can put something together, hopefully later today..

>From a quick look, spoofing a430 as the gpu-id, userspace generated
cmdstream looks the same for A420 and A430, so reasonably sure we
won't need any changes in mesa.

On the kernel side, looks like a430 brings some pwr mgmt changes
compared to a420 (seems like it can enable/disable it's own
regulators, etc).. with some luck we can ignore that to start.

BR,
-R

On Thu, Dec 3, 2015 at 1:27 PM, Craig Stout <cstout at chromium.org> wrote:
> Thanks Rob.  I have a nexus6p and would be happy to try a patch.
>
> On Thu, Dec 3, 2015 at 5:43 AM, Rob Clark <robdclark at gmail.com> wrote:
>>
>> On Thu, Dec 3, 2015 at 8:37 AM, Craig Stout <cstout at chromium.org> wrote:
>> > Mdp/hdmi support for msm8x94 was added back in June, but adreno 430/431
>> > support hasn't landed yet?
>> >
>> > Can anyone comment when/if this is coming?
>>
>> I think just when someone has some hardware..
>>
>> In theory, in mesa it should just be a one-line change to add the
>> gpu-id to the white list (switch statement).  On the kernel side, I
>> expect it shouldn't be extensive.. probably a handful of 'else if
>> (is_a430()) { .. different set of default/golden reg values .. }'
>> which should not be so hard to find from android kgsl driver.
>>
>> If someone has hardware, I could probably cook up an untested patch,
>> and then see what happens.
>>
>> BR,
>> -R
>>
>> > Thanks,
>> > -craig
>> >
>> >
>> >
>> >
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>> >
>
>