i830 watermark problems - status?

Thomas Richter
2013-11-25T15:14:17Z

Hi Daniel, hi group,

just being curious - what is the status of the i830 watermark problems,
i.e. the state of affairs
concerning that the i830 does not allow the maximum watermark value, but
requires a "headroom" of eight entries to
avoid flickering.

I provided a patch for this a while ago, but this seems to go nowhere.
Just to remind you: The current code does not create
a stable image on i830 based devices, even if only an internal display
is connected.

I provided two possible attacks to the problem: A quick and dirty method
which checks for the maximum value for
i830 manually, or an overall solution which adds a "minimum" watermark
value for all supported chipsets.

Please let me know how to proceed.

Thanks,
Thomas