[SKL] DDI buffer translation, link rates & VBT parsing updates

[Timo Aaltonen]

4.3 has some updates to Skylake DDI buffer translations, link rates and VBT parsing that are needed, together with their prereq commits:

75067ddecf21271 drm/i915: Per-DDI I_boost override
6cc38acaaa995ad drm/i915: fix VBT parsing for SDVO child device mapping
af7080f555e5560 drm/i915: fix link rates reported for SKL
e2d6cf7f3696c87 drm/i915: Allow parsing of variable size child device entries from VBT
5f8b253147c27b8 drm/i915/skl: Update DDI buffer translation programming.
fe4c63c8cbd2225 drm/i915/bxt: fix DDI PHY vswing scale value setting
f8896f5d58e64bf drm/i915/skl: Buffer translation improvements
64987fc59d90738 drm/i915/bxt: edp1.4 Intermediate Freq support

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 4.2.0-10.11

---------------
linux (4.2.0-10.11) wily; urgency=low

  [ Andy Whitcroft ]

  * Release Tracking Bug
    - LP: #1495208
  * No change rebuild to avoid issues with leading zero bytes on
    internal module signing key. (see launchpad bug 1494943)

  [ Ming Lei ]

  * [Config] SERIAL_8250_DW=y for arm64

  [ Upstream Kernel Changes ]

  * drm/i915: Move WaBarrierPerformanceFixDisable:skl to skl code from chv
    code
    - LP: #1484486
  * drm/i915/gen8: Add infrastructure to initialize WA batch buffers
    - LP: #1484486
  * drm/i915/gen8: Re-order init pipe_control in lrc mode
    - LP: #1484486
  * drm/i915/gen8: Add WaDisableCtxRestoreArbitration workaround
    - LP: #1484486
  * drm/i915/gen8: Add WaFlushCoherentL3CacheLinesAtContextSwitch
    workaround
    - LP: #1484486
  * drm/i915: Bail out early if WA batch is not available for given Gen
    - LP: #1484486
  * drm/i915/gen8: Add WaClearSlmSpaceAtContextSwitch workaround
    - LP: #1484486
  * drm/i915: Update WaFlushCoherentL3CacheLinesAtContextSwitch
    - LP: #1484486
  * drm/i915/gen9: Implement WaDisableKillLogic for gen 9
    - LP: #1484486
  * drm/i915: Enable WA batch buffers for Gen9
    - LP: #1484486
  * drm/i915/gen9: Add WaDisableCtxRestoreArbitration workaround
    - LP: #1484486
  * drm/i915: Update wa_ctx_emit() macro as per kernel coding guidelines
    - LP: #1484486
  * drm/i915/gen9: Add WaFlushCoherentL3CacheLinesAtContextSwitch
    workaround
    - LP: #1484486
  * drm/i915/gen9: Add
    WaSetDisablePixMaskCammingAndRhwoInCommonSliceChicken
    - LP: #1484486
  * drm/i915:skl: Add WaEnableGapsTsvCreditFix
    - LP: #1484486
  * drm/i915/skl: revert duplicated WaBarrierPerformanceFixDisable:skl
    - LP: #1484486
  * drm/i915/skl: Don't expose the top most plane on gen9 display
    - LP: #1484486
  * drm/i915/skl WaDisableSbeCacheDispatchPortSharing
    - LP: #1484486
  * drm/i915/skl: WaIgnoreDDIAStrap is forever, always init DDI A
    - LP: #1484486
  * drm/i915: reduce indent in i9xx_hpd_irq_handler
    - LP: #1484531
  * drm/i915: reduce duplicate conditions in i9xx_hpd_irq_handler
    - LP: #1484531
  * drm/i915: reduce indent in intel_hpd_irq_handler
    - LP: #1484531
  * drm/i915: group all hotplug related fields into a new struct in
    dev_priv
    - LP: #1484531
  * drm/i915: add for_each_hpd_pin to iterate over hotplug pins
    - LP: #1484531
  * drm/i915: simplify conditions for skipping the 2nd hpd loop iterations
    - LP: #1484531
  * drm/i915: put back the indent in intel_hpd_irq_handler
    - LP: #1484531
  * drm/i915: merge the two hpd loops in intel_hpd_irq_handler to one
    - LP: #1484531
  * drm/i915: simplify condition for digital port
    - LP: #1484531
  * drm/i915: abstract away platform specific parts from hpd handling
    - LP: #1484531
  * drm/i915: Handle HPD when it has actually occurred
    - LP: #1484531
  * drm/i915: Set power domain for DDI-E
    - LP: #1484531
  * drm/i915: Set alternate aux for DDI-E
    - LP: #1484531
  * drm/i915/skl: enable DDI-E hotplug
    - LP: #1484531
  * drm/i915/bxt: fix DDI PHY vswing scale value setting
    - LP: #1494163
  * drm/i915/skl: Buf...

[Vanessa Chang (vanessa-chang)]

Tested-by: Vanessa Chang <email address hidden>

Verified the test kernel 3.19.0-31.35+bpo1 (http://koti.kapsi.fi/~tjaalton/skl/)

Test configs:
Intel broadwell UMA graphics
Intel SKL-H graphics
Intel SKL-U graphics

Graphics functions are passed.

One issue was found after kernel updated:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1506746

[Vanessa Chang (vanessa-chang)]

Verified Passed 10 times of manual reboot test:

Test kernel :
3.19.0-32.37+bpo1

Test Configs:
Intel broadwell UMA graphics
Intel SKL-H graphics
Intel SKL-U graphics

[Vanessa Chang (vanessa-chang)]

Tested-by: Vanessa Chang <email address hidden>

Verified the test kernel 3.19.0-32.37+bpo1

Test configs:
Intel broadwell UMA graphics
Intel SKL-H graphics
Intel SKL-U graphics

Graphics functions are passed except on video out function with SKL-U

One issue was found after kernel updated on SKL-U
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1514315

[Timo Aaltonen (tjaalton)]

no need to do this for vivid anymore