[Intel-gfx] [PATCH v2 0/7] drm/i915: DP branch devices

[Mika Kahola]

Prep work for DP branch device handling

This series of patches reads DPCD register 0x80h for receiver
capabilities for DP branch devices. The branch device types are
converters for the following standards

 - DP to VGA
 - DP to DVI
 - DP to HDMI
 - DP++ dual mode
 - Wireless WiGig
 
DPCD register defines max pixel rate for VGA dongles. This
check is carried out during mode validation.

Acronyms:
DFP    Downstream-Facing Port

v2: DPCD register read outs moved to drm (Ville, Daniel)

Mika Kahola (7):
  drm: Add missing DP downstream port types
  drm: Read DPCD receiver capability for DP to VGA converter
  drm: Read DPCD receiver capability for DP to DVI converter
  drm: Read DPCD receiver capability for DP to HDMI converter
  drm: Read DPCD receiver capability for DP++
  drm: Read DPCD receiver capability for DP to Wireless Converter
  drm/i915: Check pixel rate for DP to VGA dongle

 drivers/gpu/drm/drm_dp_helper.c  | 70 +++++++++++++++++++++++++++++++++++
 drivers/gpu/drm/i915/intel_dp.c  | 11 ++++++
 drivers/gpu/drm/i915/intel_drv.h |  2 +
 include/drm/drm_dp_helper.h      | 79 ++++++++++++++++++++++++++++++++++++++++
 4 files changed, 162 insertions(+)

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1.9.1