This patch series is for making the GPD Win Max display usable with Linux.
The GPD Win Max is a small laptop, and its eDP panel does not send an EDID over DPCD; the EDID is instead available in the intel opregion, in mailbox #5 [1]
The second patch is just to fix the orientation of the panel.
Changes since v1: - rebased on drm-tip - squashed patch 1 & 2 - picked up Reviewed-by from Hans de Goede (thanks for the review)
Changes since v2: - rebased on drm-tip - updated commit message
When v2 was initially sent [3] Ville Syrjälä suggested that it might be a good idea to use the ACPI _DDC method instead to get the EDID, to cover a wider range of hardware. Unfortunately, it doesn't seem available on GPD Win Max, so I think this work should be done independently, and this patch series considered separately.
Change since v3: - edits following Jani's review: - The EDID from the opregion is now only used as a fallback: if we cannot get any edid from the edp connector, then we attempt to get it from the opregion. This works for the GPD Win Max. - all other remarks should have been taken into account - rebased on drm-tip - added Co-developed-by - reordered signed-off-by and reviewed-by in second patch (thanks Maarten!)
Changes since v4: - checkpatch.pl fixes - rebased on drm-tip - Note: patch #1 is incomplete, still missing Jani's signed-off-by
[1]: https://gitlab.freedesktop.org/drm/intel/-/issues/3454 [2]: https://patchwork.kernel.org/project/intel-gfx/patch/20200828061941.17051-1-... [3]: https://patchwork.kernel.org/project/intel-gfx/patch/20210531204642.4907-2-a...
Anisse Astier (2): drm/i915/opregion: add support for mailbox #5 EDID drm: Add orientation quirk for GPD Win Max
.../gpu/drm/drm_panel_orientation_quirks.c | 6 ++ drivers/gpu/drm/i915/display/intel_dp.c | 7 +++ drivers/gpu/drm/i915/display/intel_opregion.c | 55 ++++++++++++++++++- drivers/gpu/drm/i915/display/intel_opregion.h | 10 ++++ 4 files changed, 77 insertions(+), 1 deletion(-)