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| author | Suraj Kandpal <suraj.kandpal@intel.com> | 2026-05-17 08:17:09 +0530 |
|---|---|---|
| committer | Suraj Kandpal <suraj.kandpal@intel.com> | 2026-05-20 13:53:02 +0530 |
| commit | f30fddb4402313aa5301a74d721638d343395269 (patch) | |
| tree | 00b30db0e8cb6ca79ab05717503d799103ff95c4 /lib/raid/raid6/git@git.tavy.me:linux-stable.git | |
| parent | bd3d6a0b6e7859b90d9741aba08b87a49a531bd1 (diff) | |
Revert "drm/i915/backlight: Remove try_vesa_interface"
This reverts commit 40d2f5820951dee818d05c14677277048bd85f9f.
Removing the try_vesa_interface gate caused a backlight regression on
panels whose VBT correctly reports INTEL_BACKLIGHT_DISPLAY_DDI and whose
PWM path is the actual backlight control, but whose DPCD optimistically
advertises DP_EDP_BACKLIGHT_AUX_ENABLE_CAP / _BRIGHTNESS_AUX_SET_CAP.
After the commit such panels silently bind to the VESA AUX backlight
funcs; AUX writes complete but the panel ignores them, leaving
brightness stuck (no-op backlight). Observed on at least KBL and TGL
eDP setups.
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://patch.msgid.link/20260517024709.1016121-1-suraj.kandpal@intel.com
Diffstat (limited to 'lib/raid/raid6/git@git.tavy.me:linux-stable.git')
0 files changed, 0 insertions, 0 deletions