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linux/drivers/gpu/drm/amd/display/dc/link
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Timur Kristóf 494941aa77 drm/amd/display: Allow embedded connectors without DDC 
On some laptops, the embedded panel may not have
a DDC (display data channel) available. On these,
the EDID may be hardcoded in ACPI or the VBIOS.

In this case, use GPIO_DDC_LINE_UNKNOWN and don't fail.

Fixes: def3488eb0 ("drm/amd/display: refactor HPD to increase flexibility")
Link: https://gitlab.freedesktop.org/drm/amd/-/work_items/5192
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 75b8a6ca0e8bc3ce24572f854e95f8721b321179)
2026-04-29 10:41:15 -04:00
..
accessories drm/amd/display: Fixed Silence complier warnings in dc 2026-03-30 15:12:15 -04:00
hwss drm/amd/display: Fixed Silence complier warnings in dc 2026-03-30 15:12:15 -04:00
protocols drm/amd/display: Fix coding style issue 2026-04-17 15:21:47 -04:00
link_detection.c drm/amd/display: Read sink freesync support via mccs 2026-04-17 15:20:56 -04:00
link_detection.h drm/amd/display: Rename header file link.h to link_service.h 2025-09-15 16:57:29 -04:00
link_dpms.c drm/amd/display: Rework YCbCr422 DSC policy 2026-04-17 15:12:02 -04:00
link_dpms.h drm/amd/display: Rename header file link.h to link_service.h 2025-09-15 16:57:29 -04:00
link_factory.c drm/amd/display: Allow embedded connectors without DDC 2026-04-29 10:41:15 -04:00
link_factory.h drm/amd/display: Rename header file link.h to link_service.h 2025-09-15 16:57:29 -04:00
link_hwss_hpo_frl.c drm/amd/display: extract set stream attribute to link_hwss 2022-04-05 10:29:48 -04:00
link_resource.c drm/amd/display: move public dc link function implementation to dc_link_exports 2023-02-14 16:06:28 -05:00
link_resource.h drm/amd/display: Rename header file link.h to link_service.h 2025-09-15 16:57:29 -04:00
link_validation.c drm/amd/display: Fixed Silence complier warnings in dc 2026-03-30 15:12:15 -04:00
link_validation.h drm/amd/display: Rename header file link.h to link_service.h 2025-09-15 16:57:29 -04:00
Makefile drm/amd/display: Refactor virtual directory reorganize encoder and hwss files. 2026-02-12 15:08:49 -05:00