>From eDP 1.5 we are supposed to use the VESA pathways to control brightness. But still did not have the Nits brightness control coded in. This series enables NITS based backlight control over AUX using VESA pathways.
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/3669 Signed-off-by: Suraj Kandpal <suraj.kand...@intel.com> Suraj Kandpal (7): drm/dp: Add eDP 1.5 bit definition drm/i915/backlight: Use proper interface based on eDP version drm/i915/backlight: Check Nits based brightness control for VESA drm/i915/backlight: Modify function to get VESA brightness in NITS drm/i915/backlight: Add function to change brightness in NITS for VESA drm/i915/backlight: Setup NITS based brightness via VESA drm/i915/backlight: Enable Nits based brightness .../drm/i915/display/intel_display_types.h | 1 + .../drm/i915/display/intel_dp_aux_backlight.c | 178 ++++++++++++++---- include/drm/display/drm_dp.h | 1 + 3 files changed, 139 insertions(+), 41 deletions(-) -- 2.34.1
