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| author | Suraj Kandpal <suraj.kandpal@intel.com> | 2026-05-17 08:17:09 +0530 |
|---|---|---|
| committer | Tvrtko Ursulin <tursulin@ursulin.net> | 2026-06-05 11:07:24 +0100 |
| commit | 2914709c914101eb704e01bed2351070d4161ccf (patch) | |
| tree | c0f013af5a030b6098979986dfc950f1988a5ff6 /rust | |
| parent | 26eb7c0a7ab09d83eec833db6a5a2bc60b9d4d9a (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
(cherry picked from commit f30fddb4402313aa5301a74d721638d343395269)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Diffstat (limited to 'rust')
0 files changed, 0 insertions, 0 deletions