TencentOS-kernel/drivers/gpu/drm/amd/display
Fangzhi Zuo b264a7483b drm/amd/display: HDMI remote sink need mode validation for Linux
[ Upstream commit 95d620adb48f7728e67d82f56f756e8d451cf8d2 ]

[Why]
Currently mode validation is bypassed if remote sink exists. That
leads to mode set issue when a BW bottle neck exists in the link path,
e.g., a DP-to-HDMI converter that only supports HDMI 1.4.

Any invalid mode passed to Linux user space will cause the modeset
failure due to limitation of Linux user space implementation.

[How]
Mode validation is skipped only if in edid override. For real remote
sink, clock limit check should be done for HDMI remote sink.

Have HDMI related remote sink going through mode validation to
elimiate modes which pixel clock exceeds BW limitation.

Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Reviewed-by: Hersen Wu <hersenxs.wu@amd.com>
Acked-by: Eryk Brol <eryk.brol@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-16 16:39:49 +08:00
..
amdgpu_dm drm/amd/display: Fix wrong return value in dm_update_plane_state() 2021-03-16 16:38:31 +08:00
dc drm/amd/display: HDMI remote sink need mode validation for Linux 2021-03-16 16:39:49 +08:00
include drm/amd/display: fix pow() crashing when given base 0 2021-03-16 16:34:30 +08:00
modules drm/amd/display: Use kfree() to free rgb_user in calculate_user_regamma_ramp() 2021-03-16 16:31:03 +08:00
Kconfig Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
Makefile Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
TODO Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00