This is an alternative to [1], since Phil found out there are still invalid values. I made this series before the one I sent today, and I have to say I tested it much less. Because I did not think it was very viable to upstream. I was also not aware of [2] and [3] since they are not in a public bug tracker such as amddrm and my issue there [4] remains closed.
I lower the cc'd here since this is a draft. But this could have some viability. Especially since I can stop carrying the dodgy patches from SteamOS so that the SD OLED has a 0 brightness min. [1] https://lore.kernel.org/all/20250824085351.454619-2-l...@antheas.dev/ [2] https://gitlab.manjaro.org/packages/core/linux616/-/blob/master/0001-drm-amd-display-Add-a-quirk-for-the-Zotac-Zone.patch [3] https://gitlab.manjaro.org/packages/core/linux616/-/blob/master/0004-TEMPORARY-terrible-hack-for-zotac-screen-while-debug.patch [4] https://gitlab.freedesktop.org/drm/amd/-/issues/3803 Antheas Kapenekakis (5): drm: panel-backlight-quirks: Make ident optional drm: panel-backlight-quirks: Convert brightness quirk to generic structure drm: panel-backlight-quirks: Add secondary DMI match drm: panel-backlight-quirks: Add brightness mask quirk drm: panel-backlight-quirks: Add Steam Decks .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 19 +++- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 6 + .../link/protocols/link_edp_panel_control.c | 2 +- drivers/gpu/drm/drm_panel_backlight_quirks.c | 106 +++++++++++++----- include/drm/drm_utils.h | 8 +- 5 files changed, 109 insertions(+), 32 deletions(-) base-commit: c17b750b3ad9f45f2b6f7e6f7f4679844244f0b9 -- 2.50.1
