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 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
