[Nouveau] [Patches][nouveau/kms]: Precise Vblank and pageflip timestamping v2

[Maarten Maathuis]

On Tue, Feb 21, 2012 at 8:26 PM, Maarten Maathuis <madman2003 at gmail.com> wrote:
> On Tue, Feb 21, 2012 at 8:04 PM, Mario Kleiner
> <mario.kleiner at tuebingen.mpg.de> wrote:
>> On Feb 20, 2012, at 8:24 AM, Lucas Stach wrote:
>>
>>> Just updated versions of the patches send by Mario Kleiner. This ones are
>>> rebased on top of the nouveau tree and updated according to the review
>>> feedback.
>>>
>>> This time hopefully the right ones.
>>>
>>> Regards,
>>> Lucas
>>>
>>
>>
>> Ben, thanks for the feedback. I've resteted the v2 of Lucas new reworked and
>> rebased patches, everything fine and precise wrt. to timing precision.
>>
>> For my personal education: Is my understanding correct that these registers
>> are basically "double-buffered", and the NV50_PDISPLAY_CRTC_C macro accesses
>> the current state, whereas the NV50_PDISPLAY_CRTC_P macro provides/sets the
>> programmed values that will be latched into the _C registers at some later
>> time, e.g., modeset?
>>
>> thanks,
>> -mario
>>
>>
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>
> The proposed registers show the value that has submitted (via the
> modesetting/display fifo), but they haven't been put into effect yet
> by the "update" command. The registers (both the current and proposed
> ones) are only intended for reading. At least that is my
> understanding, perhaps Ben can tell you more.
>
> --
> Far away from the primal instinct, the song seems to fade away, the
> river get wider between your thoughts and the things we do and say.

That should be "have been submitted" not "has submitted".

-- 
Far away from the primal instinct, the song seems to fade away, the
river get wider between your thoughts and the things we do and say.