linux-stable.git/drivers/gpu/drm/amd, branch linux-6.10.y

drm/amd/display: enable_hpo_dp_link_output: Check link_res->hpo_dp_link_enc before using it

2024-10-10T10:01:14+00:00

commit d925c04d974c657d10471c0c2dba3bc9c7d994ee upstream.

[WHAT & HOW]
Functions dp_enable_link_phy and dp_disable_link_phy can pass link_res
without initializing hpo_dp_link_enc and it is necessary to check for
null before dereferencing.

This fixes 1 FORWARD_NULL issue reported by Coverity.

Fixes: 0beca868cde8 ("drm/amd/display: Check link_res->hpo_dp_link_enc before using it")
Reviewed-by: Rodrigo Siqueira 
Signed-off-by: Alex Hung 
Signed-off-by: Aurabindo Pillai 
Signed-off-by: Alex Deucher 
Signed-off-by: Greg Kroah-Hartman

drm/amd/display: Revert Avoid overflow assignment

2024-10-10T10:01:14+00:00

commit e80f8f491df873ea2e07c941c747831234814612 upstream.

This reverts commit a15268787b79 ("drm/amd/display: Avoid overflow assignment in link_dp_cts")
Due to regression causing DPMS hang.

Reviewed-by: Alex Hung 
Signed-off-by: Gabe Teeger 
Signed-off-by: Wayne Lin 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher 
Signed-off-by: Greg Kroah-Hartman

Revert "drm/amd/display: Skip Recompute DSC Params if no Stream on Link"

2024-10-10T10:01:13+00:00

This reverts commit 6f9c39e8169384d2a5ca9bf323a0c1b81b3d0f3a.

duplicated a change made in 6.10.5
70275bb960c71d313254473d38c14e7101cee5ad

Cc: stable@vger.kernel.org # 6.10
Signed-off-by: Jonathan Gray 
Signed-off-by: Greg Kroah-Hartman

drm/amd/display: Allow backlight to go below `AMDGPU_DM_DEFAULT_MIN_BACKLIGHT`

2024-10-10T10:01:09+00:00

[ Upstream commit 87d749a6aab73d8069d0345afaa98297816cb220 ]

The issue with panel power savings compatibility below
`AMDGPU_DM_DEFAULT_MIN_BACKLIGHT` happens at
`AMDGPU_DM_DEFAULT_MIN_BACKLIGHT` as well.

That issue will be fixed separately, so don't prevent the backlight
brightness from going that low.

Cc: Harry Wentland 
Cc: Thomas Weißschuh 
Link: https://lore.kernel.org/amd-gfx/be04226a-a9e3-4a45-a83b-6d263c6557d8@t-8ch.de/T/#m400dee4e2fc61fe9470334d20a7c8c89c9aef44f
Reviewed-by: Harry Wentland 
Signed-off-by: Mario Limonciello 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin

drm/amd/display: Fix system hang while resume with TBT monitor

2024-10-10T10:01:08+00:00

commit 52d4e3fb3d340447dcdac0e14ff21a764f326907 upstream.

[Why]
Connected with a Thunderbolt monitor and do the suspend and the system
may hang while resume.

The TBT monitor HPD will be triggered during the resume procedure
and call the drm_client_modeset_probe() while
struct drm_connector connector->dev->master is NULL.

It will mess up the pipe topology after resume.

[How]
Skip the TBT monitor HPD during the resume procedure because we
currently will probe the connectors after resume by default.

Reviewed-by: Wayne Lin 
Signed-off-by: Tom Chung 
Signed-off-by: Fangzhi Zuo 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher 
(cherry picked from commit 453f86a26945207a16b8f66aaed5962dc2b95b85)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman

drm/amd/display: update DML2 policy EnhancedPrefetchScheduleAccelerationFinal DCN35

2024-10-10T10:01:08+00:00

commit 0d5e5e8a0aa49ea2163abf128da3b509a6c58286 upstream.

[WHY & HOW]
Mismatch in DCN35 DML2 cause bw validation failed to acquire unexpected DPP pipe to cause
grey screen and system hang. Remove EnhancedPrefetchScheduleAccelerationFinal value override
to match HW spec.

Cc: Mario Limonciello 
Cc: Alex Deucher 
Reviewed-by: Charlene Liu 
Signed-off-by: Yihan Zhu 
Signed-off-by: Aurabindo Pillai 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher 
(cherry picked from commit 9dad21f910fcea2bdcff4af46159101d7f9cd8ba)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman

drm/amd/display: Add HDR workaround for specific eDP

2024-10-10T10:01:08+00:00

commit 05af800704ee7187d9edd461ec90f3679b1c4aba upstream.

[WHY & HOW]
Some eDP panels suffer from flicking when HDR is enabled in KDE. This
quirk works around it by skipping VSC that is incompatible with eDP
panels.

Link: https://gitlab.freedesktop.org/drm/amd/-/issues/3151
Cc: Mario Limonciello 
Cc: Alex Deucher 
Reviewed-by: Rodrigo Siqueira 
Signed-off-by: Alex Hung 
Signed-off-by: Aurabindo Pillai 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher 
(cherry picked from commit 4d4257280d7957727998ef90ccc7b69c7cca8376)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman

drm/amdgpu/gfx10: use rlc safe mode for soft recovery

2024-10-10T10:00:38+00:00

[ Upstream commit ead60e9c4e29c8574cae1be4fe3af1d9a978fb0f ]

Protect the MMIO access with safe mode.

Acked-by: Vitaly Prosyak 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin

drm/amdgpu/gfx11: use rlc safe mode for soft recovery

2024-10-10T10:00:38+00:00

[ Upstream commit 3f2d35c325534c1b7ac5072173f0dc7ca969dec2 ]

Protect the MMIO access with safe mode.

Acked-by: Vitaly Prosyak 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin

drm/amdkfd: Check int source id for utcl2 poison event

2024-10-10T10:00:37+00:00

[ Upstream commit db6341a9168d2a24ded526277eeab29724d76e9d ]

Traditional utcl2 fault_status polling does not
work in SRIOV environment. The polling of fault
status register from guest side will be dropped
by hardware.

Driver should switch to check utcl2 interrupt
source id to identify utcl2 poison event. It is
set to 1 when poisoned data interrupts are
signaled.

v2: drop the unused local variable (Tao)

Signed-off-by: Hawking Zhang 
Reviewed-by: Tao Zhou 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin