Re: [Intel-gfx] [PATCH v5] drm/i915: Enable scanline read based on frame timestamps

2017-09-23 Thread Saarinen, Jani
] [PATCH v5] drm/i915: Enable scanline read based on > frame timestamps > > On Fri, Sep 22, 2017 at 09:11:30PM +0530, Vidya Srinivas wrote: > > From: Uma Shankar > > > > For certain platforms on certain encoders, timings are driven from > > port instead of pipe. Thu

Re: [Intel-gfx] [PATCH v5] drm/i915: Enable scanline read based on frame timestamps

2017-09-22 Thread Ville Syrjälä
On Fri, Sep 22, 2017 at 09:11:30PM +0530, Vidya Srinivas wrote: > From: Uma Shankar > > For certain platforms on certain encoders, timings are driven > from port instead of pipe. Thus, we can't rely on pipe scanline > registers to get the timing information. Some cases scanline > register read wi

[Intel-gfx] [PATCH v5] drm/i915: Enable scanline read based on frame timestamps

2017-09-22 Thread Vidya Srinivas
From: Uma Shankar For certain platforms on certain encoders, timings are driven from port instead of pipe. Thus, we can't rely on pipe scanline registers to get the timing information. Some cases scanline register read will not be functional. This is causing vblank evasion logic to fail since it