intel_psr_invalidate — Invalidade PSR
|struct drm_device * dev,|
Since the hardware frontbuffer tracking has gaps we need to integrate with the software frontbuffer tracking. This function gets called every time frontbuffer rendering starts and a buffer gets dirtied. PSR must be disabled if the frontbuffer mask contains a buffer relevant to PSR.
Dirty frontbuffers relevant to PSR are tracked in busy_frontbuffer_bits."