[Intel-gfx] [PATCH v2 0/4] drm: DP++ adaptor support (v2)

[ville.syrjala at linux.intel.com]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Here's a respin of my DP++ adaptor support series [1]. Pardon for taking
forever with this. Presumably we want to get this into stable to fix the
regression from HDMI 12bpc support.

I've tried to account for a bunch of Paulo's review comments

I also tried to make the helper a bit easier to use by having the caller
pass the adaptor type to the helper functions, and so the need for most
adaptor type checks in driver code is eliminated. I still left some
checks in i915, but those are there just to do the type 1 DVI vs. none
detectio, and to suppress the debug output when no adaptor is detected.

I also redid the detection logic a bit to ease future LSPCON enabling.

I had to rebase a bunch of stuff due to VBT shuffling. I also noticed
that my BSW still wasn't detecting type 1 DVI adaptors, which I managed
to "fix" by having the VBT check also accept HDMI type dvo_ports as DP++
ports, which sucks a bit but should hopefully be robust enough.

I felt that things changed a bit too much in the end for me to hang
on to the r-bs unfortunately, so I didn't actually pick them up. So
if people aren't too fed up with this, I'd appreciate them having a
a second look.

Series available here:
git://github.com/vsyrjala/linux.git dp_dual_mode_3

[1] https://lists.freedesktop.org/archives/dri-devel/2016-February/101494.html

Ville Syrjälä (4):
  drm: Add helper for DP++ adaptors
  drm/i915: Respect DP++ adaptor TMDS clock limit
  drm/i915: Enable/disable TMDS output buffers in DP++ adaptor as needed
  drm/i915: Determine DP++ type 1 DVI adaptor presence based on VBT

 drivers/gpu/drm/Makefile                  |   2 +-
 drivers/gpu/drm/drm_dp_dual_mode_helper.c | 356 ++++++++++++++++++++++++++++++
 drivers/gpu/drm/i915/i915_drv.h           |   1 +
 drivers/gpu/drm/i915/intel_bios.c         |  36 +++
 drivers/gpu/drm/i915/intel_ddi.c          |  12 +
 drivers/gpu/drm/i915/intel_drv.h          |   6 +
 drivers/gpu/drm/i915/intel_hdmi.c         | 100 ++++++++-
 drivers/gpu/drm/i915/intel_vbt_defs.h     |  13 ++
 include/drm/drm_dp_dual_mode_helper.h     |  83 +++++++
 9 files changed, 600 insertions(+), 9 deletions(-)
 create mode 100644 drivers/gpu/drm/drm_dp_dual_mode_helper.c
 create mode 100644 include/drm/drm_dp_dual_mode_helper.h

-- 
2.7.4