[Intel-gfx] [PATCH v3 00/12] 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. 

What's new in the series:
 - Readout of branch device ID, HW, and SW revisions from DPCD register 

Acronyms:
BD     Brand Device
DFP    Downstream-Facing Port

v2: DPCD register read outs moved to drm (Ville, Daniel)
v3: Max pixel rate computation moved to drm (Daniel)

Mika Kahola (12):
  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: Compute max pixel rate for DP sink
  drm/i915: Check pixel rate for DP to VGA dongle
  drm/i915: Read DP branch device id
  drm/i915: Read DP branch device HW revision
  drm/i915: Read DP branch device SW revision
  drm/i915: Add DP branch device info on debugfs

 drivers/gpu/drm/drm_dp_helper.c     | 92 +++++++++++++++++++++++++++++++++++++
 drivers/gpu/drm/i915/i915_debugfs.c | 37 +++++++++++++++
 drivers/gpu/drm/i915/intel_dp.c     | 23 ++++++++++
 drivers/gpu/drm/i915/intel_drv.h    |  2 +
 include/drm/drm_dp_helper.h         | 86 ++++++++++++++++++++++++++++++++++
 5 files changed, 240 insertions(+)

-- 
1.9.1