On 8/24/2025 3:01 PM, Antheas Kapenekakis wrote:
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'll look through and may leave some comments on individual patches.
But I do want to say because platforms can share panels or can have
multiple sources we very likely should be keeping matching that does
SMBIOS data and panel data together.
It's also completely feasible to launch another second source or third
source panel later on which might not require the same quirks as the first.
Then lastly there are companies (IE Framework) that actively let people
change out their panel for another.
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.
You should make it "RFC".
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
