[Intel-gfx] Bug Team Status

[Damien Lespiau]

Another week, another bug team status:

== Paulo Zanoni

 Investigated and fixed a lot of VGA Haswell bugs with some general
bugzilla bookkeeping:
  - Fix our FDI link "retrain" code (if the first training attempt
failed, the subsequent ones would always fail)
  - Reject modes we can't set (we only have 2 FDI lanes)
  - Make more modes fit on 2 FDI lanes
  - Fix VGA after suspend/resume (init the PCH refclk)
  - Fix VGA black screens on CRW machines (set FDI RX polarity reversal bit)

None of these patches is upstream yet (need review), but they were
already tested by QA and confirmed that they will enable us to fix the
current top-priority Haswell bug.

== Damien Lespiau

Looked at some fdo bugs:

- [Bug 55901] [IVB/HSW]I-G-T/testdisplay -p fails with modes 1400x1050
and 1366x768 (fixed and verified)
- [Bug 50249] [VLV] verify LLC cache settings (closed)
- [Bug 55372] HDMI unplug detection after gen4 should check HPD before
EDID: Added the investigation so far, noone has found the equivalent
on the HPD live status bits, the closest that I could find was
SHOTPLUG_CTL and does not seem very useful
- Spend some time discovering the GTI (GT Interface) modules, learning
about the MMIO fifo and forcewake bits.

-- 
Damien