[PATCH 2/6] drm/radeon: remove HDMI interrupts on Evergreen

[Alex Deucher]

On Sun, Apr 14, 2013 at 11:55 AM, Rafał Miłecki <zajec5 at gmail.com> wrote:
> 2013/4/14 Alex Deucher <alexdeucher at gmail.com>:
>> On Sat, Apr 13, 2013 at 7:26 PM, Rafał Miłecki <zajec5 at gmail.com> wrote:
>>> We need interrupts on format change for R6xx only, where hardware seems
>>> to be somehow bugged and requires setting audio info manually.
>>
>> Can you confirm that this is actually needed on older chips?  AFAIK,
>> it shouldn't be required for any chips.  It's mainly for debugging.
>
> I can't really right now :( My notebook with RV620 died (hard disk
> ended it's life and power cable got broken). I hope to resurrect him
> in about a week.
>
> If that isn't needed on R6xx, I'm not sure why we implemented it in
> first place at all. Christian? Do you have idea why this was required?
> I remember than in first place we were using timer, then we switched
> to the interrupts. But why we needed it at all?

I suspect it was just assumed to be necessary due to the original RE.

Alex

>
> --
> Rafał