kernel-packages team mailing list archive

[Timo Aaltonen <tjaalton@xxxxxxxxxx>]

Public bug reported:

This set of backports fixes some issues in i915_bdw:

drm/i915/bdw: Remove BDW preproduction W/As until C stepping.
drm/i915: Add the WaCsStallBeforeStateCacheInvalidate:bdw workaround.
drm/i915: Refactor Broadwell PIPE_CONTROL emission into a helper.
drm/i915: Replace hardcoded cacheline size with macro
drm/i915/bdw: Cleanup pre prod workarounds
drm/i915/bdw: Apply workarounds in render ring init function
drm/i915: call lpt_init_clock_gating on BDW too
drm/i915/bdw: Disable idle DOP clock gating
drm/i915/bdw: 3D_CHICKEN3 has write mask bits
drm/i915: add null render states for gen6, gen7 and gen8
- Add new workarounds and remove those that cause issues on production HW
- Also makes sure the WA's are applied on GPU reset, suspend & resume et al
- fixes various cases when the GPU can get hung

drm/i915: respect the VBT minimum backlight brightness
drm/i915: extract backlight minimum brightness from VBT
drm/i915: shuffle panel code
- fix a bug where changing the panel brightness to lowest value actually turns the panel off

drm/i915/bdw: Add 42ms delay for IPS disable
- fix the panel getting confused and corrupt when changing resolutions back and forth

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Invalid

** Affects: linux (Ubuntu Trusty)
     Importance: High
     Assignee: Timo Aaltonen (tjaalton)
         Status: Triaged

** Also affects: linux (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu)
       Status: New => Invalid

** Changed in: linux (Ubuntu Trusty)
   Importance: Undecided => High

** Changed in: linux (Ubuntu Trusty)
       Status: New => Triaged

** Changed in: linux (Ubuntu Trusty)
     Assignee: (unassigned) => Timo Aaltonen (tjaalton)

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https://bugs.launchpad.net/bugs/1374389

Title:
  [i915_bdw] Backported bugfixes

Status in “linux” package in Ubuntu:
  Invalid
Status in “linux” source package in Trusty:
  Triaged

Bug description:
  This set of backports fixes some issues in i915_bdw:

  drm/i915/bdw: Remove BDW preproduction W/As until C stepping.
  drm/i915: Add the WaCsStallBeforeStateCacheInvalidate:bdw workaround.
  drm/i915: Refactor Broadwell PIPE_CONTROL emission into a helper.
  drm/i915: Replace hardcoded cacheline size with macro
  drm/i915/bdw: Cleanup pre prod workarounds
  drm/i915/bdw: Apply workarounds in render ring init function
  drm/i915: call lpt_init_clock_gating on BDW too
  drm/i915/bdw: Disable idle DOP clock gating
  drm/i915/bdw: 3D_CHICKEN3 has write mask bits
  drm/i915: add null render states for gen6, gen7 and gen8
  - Add new workarounds and remove those that cause issues on production HW
  - Also makes sure the WA's are applied on GPU reset, suspend & resume et al
  - fixes various cases when the GPU can get hung

  drm/i915: respect the VBT minimum backlight brightness
  drm/i915: extract backlight minimum brightness from VBT
  drm/i915: shuffle panel code
  - fix a bug where changing the panel brightness to lowest value actually turns the panel off

  drm/i915/bdw: Add 42ms delay for IPS disable
  - fix the panel getting confused and corrupt when changing resolutions back and forth

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