[PATCH v1 0/5] drm: panel-backlight-quirks: Do partial refactor and apply OLED fix

[Antheas Kapenekakis <lkml@antheas.dev>]

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-lkml@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