kernel/linux.git/drivers/gpu/drm/amd/display/include, branch v5.15.209

drm/amd/display: Read EDID from VBIOS embedded panel info

2026-06-01T15:35:43+00:00

[ Upstream commit 9ea16f64189bf7b6ba50fc7f0325b3c1f836d105 ] Some board manufacturers hardcode the EDID for the embedded panel in the VBIOS. This EDID should be used when the panel doesn't have a DDC. For reference, see the legacy non-DC display code: amdgpu_atombios_encoder_get_lcd_info() This is necessary to support embedded connectors without DDC. Fixes: 4562236b3bc0 ("drm/amd/dc: Add dc display driver (v2)") Link: https://gitlab.freedesktop.org/drm/amd/-/work_items/5192 Signed-off-by: Timur Kristóf Signed-off-by: Alex Deucher (cherry picked from commit eb105e63b474c11ef6a84a1c6b18100d851ff364) Signed-off-by: Sasha Levin

drm/amd/display: Reduce dmesg error to a debug print

2022-03-08T18:12:43+00:00

commit 1d925758ba1a5d2716a847903e2fd04efcbd9862 upstream. [Why & How] Dmesg errors are found on dcn3.1 during reset test, but it's not a really failure. So reduce it to a debug print. Signed-off-by: Leo (Hanghong) Ma Reviewed-by: Nicholas Kazlauskas Signed-off-by: Alex Deucher Cc: Mario Limonciello Signed-off-by: Greg Kroah-Hartman

drm/amdgpu: support B0&B1 external revision id for yellow carp

2021-10-20T19:27:31+00:00

B0 internal rev_id is 0x01, B1 internal rev_id is 0x02. The external rev_id for B0 and B1 is 0x20. The original expression is not suitable for B1. v2: squash in fix for display code (Alex) Signed-off-by: Aaron Liu Reviewed-by: Huang Rui Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org

drm/amd/display: USB4 bring up set correct address

2021-10-05T14:32:06+00:00

[Why] YELLOW_CARP_B0 address was not correct [How] Set YELLOW_CARP_B0 to 0x1A. Reviewed-by: Nicholas Kazlauskas Acked-by: Wayne Lin Signed-off-by: Jude Shih Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org

drm/amdgpu/display: fold DRM_AMD_DC_DCN3_1 into DRM_AMD_DC_DCN

2021-06-22T20:51:45+00:00

No need for a separate flag now that DCN3.1 is not in bring up. Fold into DRM_AMD_DC_DCN like previous DCN IPs. Reviewed-by: Nicholas Kazlauskas Signed-off-by: Alex Deucher

drm/amd/display: Add DCN3.1 yellow carp asic family IDs

2021-06-04T20:03:26+00:00

[Why & How] To determine whether the chip is yellow carp or not and which revision it is. Acked-by: Huang Rui Signed-off-by: Nicholas Kazlauskas Signed-off-by: Alex Deucher

drm/amd/display/dc/gpio/gpio_service: Pass around correct dce_{version, environment} types

2021-05-27T16:33:51+00:00

Fixes the following W=1 kernel build warning(s): drivers/gpu/drm/amd/amdgpu/../display/dc/gpio/gpio_service.c: In function ‘dal_gpio_service_create’: drivers/gpu/drm/amd/amdgpu/../display/dc/gpio/gpio_service.c:71:4: warning: implicit conversion from ‘enum dce_version’ to ‘enum dce_environment’ [-Wenum-conversion] drivers/gpu/drm/amd/amdgpu/../display/dc/gpio/gpio_service.c:77:4: warning: implicit conversion from ‘enum dce_version’ to ‘enum dce_environment’ [-Wenum-conversion] Cc: Harry Wentland Cc: Leo Li Cc: Alex Deucher Cc: "Christian König" Cc: David Airlie Cc: Daniel Vetter Cc: amd-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org Signed-off-by: Lee Jones Signed-off-by: Alex Deucher

drm/amd/display: add exit training mode and update channel coding in LT

2021-05-27T16:25:43+00:00

[why] As recommended by DP specs, source needs to make sure DPRX exits previous LT mode before configuring new LT params Nofity what channel coding mode we will use for current link training. Signed-off-by: Wenjing Liu Reviewed-by: Jun Lei Acked-by: Qingqing Zhuo Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Initial DC support for Beige Goby

2021-05-20T02:42:00+00:00

[Why&How] Add Beige Goby (DCN303) resource, irq service, & dmub loader. v2: fix nbio include (Alex) Signed-off-by: Chris Park Signed-off-by: Aurabindo Pillai Acked-by: Alex Deucher Signed-off-by: Alex Deucher

drm/amd/display: consider channel coding in configure lttpr mode

2021-05-20T02:39:13+00:00

[why] Some lttpr configuration steps are exclusive to 8b/10b channel coding mode. We need to take channel conding into account. Signed-off-by: Wenjing Liu Reviewed-by: George Shen Acked-by: Stylon Wang Acked-by: Wesley Chalmers Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher