Commits
![Mika Kahola](https://secure.gravatar.com/avatar/a2f27b2584feefe9ead5562b6b61dc41.jpg?s=96&d=mm)
Mika Kahola committed 70ec064516c
drm/i915: Check pixel rate for DP to VGA dongle Filter out a mode that exceeds the max pixel rate setting for DP to VGA dongle. This is defined in DPCD register 0x81 if detailed cap info i.e. info field is 4 bytes long and it is available for DP downstream port. The register defines the pixel rate divided by 8 in MP/s. v2: DPCD read outs and computation moved to drm (Ville, Daniel) v3: Sink pixel rate computation moved to drm_dp_max_sink_dotclock() function (Daniel) v4: Use of drm_dp_helper.c routines to compute max pixel clock (Ville) v5: Use of intel_dp->downstream_ports to read out port capabilities. Code restructuring (Ville) v6: Move DP branch device check to drm_dp_helper.c (Daniel) v7: Cleanup as suggested by Ville Reviewed-by: Jim Bride <jim.bride@linux.intel.com> Signed-off-by: Mika Kahola <mika.kahola@intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1473419458-17080-10-git-send-email-mika.kahola@intel.com