linux-stable.git/drivers/gpu/drm/amd/display/modules, branch v5.10.239

drm/amd/display: Round calculated vtotal

2024-10-17T13:08:00+00:00

commit c03fca619fc687338a3b6511fdbed94096abdf79 upstream.

[WHY]
The calculated vtotal may has 1 line deviation. To get precisely
vtotal number, round the vtotal result.

Cc: Mario Limonciello 
Cc: Alex Deucher 
Cc: stable@vger.kernel.org
Reviewed-by: Anthony Koo 
Signed-off-by: Robin Chen 
Signed-off-by: Alex Hung 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher 
Signed-off-by: Greg Kroah-Hartman

drm/amd/display: Add array index check for hdcp ddc access

2024-09-12T09:06:40+00:00

[ Upstream commit 4e70c0f5251c25885c31ee84a31f99a01f7cf50e ]

[Why]
Coverity reports OVERRUN warning. Do not check if array
index valid.

[How]
Check msg_id valid and valid array index.

Reviewed-by: Alex Hung 
Acked-by: Tom Chung 
Signed-off-by: Hersen Wu 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin

drm/amd/display: Check index msg_id before read or write

2024-07-18T11:05:39+00:00

[ Upstream commit 59d99deb330af206a4541db0c4da8f73880fba03 ]

[WHAT]
msg_id is used as an array index and it cannot be a negative value, and
therefore cannot be equal to MOD_HDCP_MESSAGE_ID_INVALID (-1).

[HOW]
Check whether msg_id is valid before reading and setting.

This fixes 4 OVERRUN issues reported by Coverity.

Reviewed-by: Rodrigo Siqueira 
Acked-by: Wayne Lin 
Signed-off-by: Alex Hung 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin

drm/amd/display: revert Exit idle optimizations before HDCP execution

2024-07-05T07:12:41+00:00

commit f2703a3596a279b0be6eeed4c500bdbaa8dc3ce4 upstream.

why and how:
causes black screen on PNP on DCN 3.5

This reverts commit f30a3bea92bd ("drm/amd/display: Exit idle
optimizations before HDCP execution")

Cc: Mario Limonciello 
Cc: Alex Deucher 
Reviewed-by: Nicholas Kazlauskas 
Acked-by: Wayne Lin 
Signed-off-by: Martin Leung 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher 
Signed-off-by: Greg Kroah-Hartman

drm/amd/display: Exit idle optimizations before HDCP execution

2024-07-05T07:12:35+00:00

[ Upstream commit f30a3bea92bdab398531129d187629fb1d28f598 ]

[WHY]
PSP can access DCN registers during command submission and we need
to ensure that DCN is not in PG before doing so.

[HOW]
Add a callback to DM to lock and notify DC for idle optimization exit.
It can't be DC directly because of a potential race condition with the
link protection thread and the rest of DM operation.

Cc: Mario Limonciello 
Cc: Alex Deucher 
Reviewed-by: Charlene Liu 
Acked-by: Alex Hung 
Signed-off-by: Nicholas Kazlauskas 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin

drm/amd/display: Fix nanosec stat overflow

2024-04-13T10:59:47+00:00

[ Upstream commit 14d68acfd04b39f34eea7bea65dda652e6db5bf6 ]

[Why]
Nanosec stats can overflow on long running systems potentially causing
statistic logging issues.

[How]
Use 64bit types for nanosec stats to ensure no overflow.

Reviewed-by: Rodrigo Siqueira 
Tested-by: Daniel Wheeler 
Signed-off-by: Aric Cyr 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin

drm/amd/display: Return the correct HDCP error code

2024-04-13T10:58:43+00:00

[ Upstream commit e64b3f55e458ce7e2087a0051f47edabf74545e7 ]

[WHY & HOW]
If the display is null when creating an HDCP session, return a proper
error code.

Cc: Mario Limonciello 
Cc: Alex Deucher 
Cc: stable@vger.kernel.org
Acked-by: Alex Hung 
Signed-off-by: Rodrigo Siqueira 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin

drm/amd/display: prevent potential division by zero errors

2023-09-19T10:20:28+00:00

commit 07e388aab042774f284a2ad75a70a194517cdad4 upstream.

There are two places in apply_below_the_range() where it's possible for
a divide by zero error to occur. So, to fix this make sure the divisor
is non-zero before attempting the computation in both cases.

Cc: stable@vger.kernel.org
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2637
Fixes: a463b263032f ("drm/amd/display: Fix frames_to_insert math")
Fixes: ded6119e825a ("drm/amd/display: Reinstate LFC optimization")
Reviewed-by: Aurabindo Pillai 
Signed-off-by: Hamza Mahfooz 
Signed-off-by: Alex Deucher 
Signed-off-by: Greg Kroah-Hartman

drm/amd/display: Limit user regamma to a valid value

2022-09-28T09:10:39+00:00

[ Upstream commit 3601d620f22e37740cf73f8278eabf9f2aa19eb7 ]

[Why]
For HDR mode, we get total 512 tf_point and after switching to SDR mode
we actually get 400 tf_point and the rest of points(401~512) still use
dirty value from HDR mode. We should limit the rest of the points to max
value.

[How]
Limit the value when coordinates_x.x > 1, just like what we do in
translate_from_linear_space for other re-gamma build paths.

Tested-by: Daniel Wheeler 
Reviewed-by: Krunoslav Kovac 
Reviewed-by: Aric Cyr 
Acked-by: Pavle Kotarac 
Signed-off-by: Yao Wang1 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin

drm/amd/display: Update VTEM Infopacket definition

2022-04-20T07:23:20+00:00

[ Upstream commit c9fbf6435162ed5fb7201d1d4adf6585c6a8c327 ]

[Why & How]
The latest HDMI SPEC has updated the VTEM packet structure,
so change the VTEM Infopacket defined in the driver side to align
with the SPEC.

Reviewed-by: Chris Park 
Acked-by: Alex Hung 
Signed-off-by: Leo (Hanghong) Ma 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin