[PATCH 0/7][SRU][OEM-5.6] Support WD19TB external output on TGL platform

[Hsuan-Yu Lin]

BugLink: https://bugs.launchpad.net/bugs/1886165

[Impact]
TGL platform can't output external monitor on WD19TB docking.
There's no screen on the external monitor.
error in dmesg:

[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underru

[Fix]
According to Intel's suggestion,
we need this: https://patchwork.freedesktop.org/series/78909/
Also for dependency, the following patches are landed in drm-tip
and necessary for support TGL platform:

* commit f4ece33f51d8 ("drm/i915/tgl+: Fix TBT DPLL fractional divider for 38.4MHz ref clock")
* commit a6e96d6948c8 ("drm/i915/tgl+: Use the correct DP_TP_* register instances in MST encoders")
* commit f822a79734e1 ("drm/i915/dc3co: Avoid full modeset when EXITLINE needs to be changed")
* commit 1a7e82efaa8a ("drm/i915/tgl: Add HBR and HBR2+ voltage swing table")
* commit 80907edcc6ed ("UBUNTU: SAUCE: drm/i915/bios: add intel_bios_hdmi_level_shift()")
* commit 6df896896c8d ("drm/i915/tgl: Implement WA_16011163337")
* commit cb730fe971f0 ("drm/i915/tgl: Update TC DP vswing table")

[Test]
The WD19TB can output HDMI/DP to external monitor.

[Regression Potential]
Medium, in order to support TGL platform, we also include two patches:
drm/i915/bios: add intel_bios_hdmi_level_shift()
drm/i915/dc3co: Avoid full modeset when EXITLINE needs to be changed
The two patches are not related to TGL, but for dependency.

Clint Taylor (1):
  drm/i915/tgl: Implement WA_16011163337

Imre Deak (2):
  drm/i915/tgl+: Use the correct DP_TP_* register instances in MST
    encoders
  drm/i915/tgl+: Fix TBT DPLL fractional divider for 38.4MHz ref clock

Jani Nikula (1):
  UBUNTU: SAUCE: drm/i915/bios: add intel_bios_hdmi_level_shift()

José Roberto de Souza (3):
  drm/i915/tgl: Update TC DP vswing table
  drm/i915/tgl: Add HBR and HBR2+ voltage swing table
  drm/i915/dc3co: Avoid full modeset when EXITLINE needs to be changed

 drivers/gpu/drm/i915/display/intel_bios.c     |  16 ++
 drivers/gpu/drm/i915/display/intel_bios.h     |   2 +
 drivers/gpu/drm/i915/display/intel_ddi.c      | 169 +++++++-----------
 drivers/gpu/drm/i915/display/intel_display.c  |   1 -
 drivers/gpu/drm/i915/display/intel_dpll_mgr.c |  13 +-
 drivers/gpu/drm/i915/display/intel_psr.c      |  45 +++++
 drivers/gpu/drm/i915/gt/intel_workarounds.c   |  11 +-
 drivers/gpu/drm/i915/i915_reg.h               |   2 +
 8 files changed, 144 insertions(+), 115 deletions(-)

-- 
2.25.1