linux-stable.git/drivers/gpu/drm/amd/display/dc, branch v6.6.2

drm/amd/display: Don't use fsleep for PSR exit waits

2023-11-08T10:56:20+00:00

[ Upstream commit 79df45dc4bfb13d9bd3a75338b9d9dab948be3d6 ]

[Why]
These functions can be called from high IRQ levels and the OS will hang
if it tries to use a usleep_highres or a msleep.

[How]
Replace the fsleep with a udelay.

Reviewed-by: Aric Cyr 
Acked-by: Tom Chung 
Signed-off-by: Nicholas Kazlauskas 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin

drm/amd/display: Don't set dpms_off for seamless boot

2023-10-09T21:59:29+00:00

[Why]
eDPs fail to light up with seamless boot enabled

[How]
When seamless boot is enabled don't configure dpms_off
in disable_vbios_mode_if_required.

Reviewed-by: Charlene Liu 
Cc: Mario Limonciello 
Cc: Alex Deucher 
Cc: stable@vger.kernel.org
Acked-by: Tom Chung 
Signed-off-by: Daniel Miess 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher

drm/amd/display: apply edge-case DISPCLK WDIVIDER changes to master OTG pipes only

2023-10-05T02:55:05+00:00

[Why]
The edge-case DISPCLK WDIVIDER changes call stream_enc functions.
But with MPC pipes, downstream pipes have null stream_enc and will
 cause crash.

[How]
Only call stream_enc functions for pipes that are OTG master.

Reviewed-by: Alvin Lee 
Cc: Mario Limonciello 
Cc: Alex Deucher 
Cc: stable@vger.kernel.org
Acked-by: Aurabindo Pillai 
Signed-off-by: Samson Tam 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher

drm/amd/display: Fix MST recognizes connected displays as one

2023-09-20T21:23:30+00:00

[What]
MST now recognizes both connected displays

Fixes: 927e784c180c ("drm/amd/display: Add symclk enable/disable during stream enable/disable")
Reviewed-by: Charlene Liu 
Acked-by: Stylon Wang 
Signed-off-by: Muhammad Ahmed 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher

drm/amd/display: Fix 2nd DPIA encoder Assignment

2023-09-11T22:30:15+00:00

[HOW & Why]
There seems to be an issue with 2nd DPIA acquiring link encoder for tiled displays.
Solution is to remove check for eng_id before we get first dynamic encoder for it

Reviewed-by: Cruise Hung 
Reviewed-by: Meenakshikumar Somasundaram 
Cc: Mario Limonciello 
Cc: Alex Deucher 
Cc: stable@vger.kernel.org
Acked-by: Stylon Wang 
Signed-off-by: Mustapha Ghaddar 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher

drm/amd/display: Add DPIA Link Encoder Assignment Fix

2023-09-11T22:30:03+00:00

For DPIA we should have preferred DIG assignment based on DPIA selected
as per the ASIC design.

Reviewed-by: George Shen 
Acked-by: Hamza Mahfooz 
Signed-off-by: Mustapha Ghaddar 
Signed-off-by: Alex Deucher 
Cc: stable@vger.kernel.org

drm/amd/display: Don't check registers, if using AUX BL control

2023-09-11T22:19:31+00:00

[Why]
Currently the driver looks DCN registers to access if BL is on or not.
This check is not valid if we are using AUX based brightness control.
This causes driver to not send out "backlight off" command during power off
sequence as it already thinks it is off.

[How]
Only check DCN registers if we aren't using AUX based brightness control.

Reviewed-by: Wenjing Liu 
Acked-by: Stylon Wang 
Signed-off-by: Swapnil Patel 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher

drm/amd/display: limit the v_startup workaround to ASICs older than DCN3.1

2023-09-07T02:08:26+00:00

Since, calling dcn20_adjust_freesync_v_startup() on DCN3.1+ ASICs
can cause the display to flicker and underflow to occur, we shouldn't
call it for them. So, ensure that the DCN version is less than
DCN_VERSION_3_1 before calling dcn20_adjust_freesync_v_startup().

Cc: stable@vger.kernel.org
Reviewed-by: Fangzhi Zuo 
Signed-off-by: Hamza Mahfooz 
Signed-off-by: Alex Deucher

Revert "drm/amd/display: Remove v_startup workaround for dcn3+"

2023-09-07T02:08:10+00:00

This reverts commit 3a31e8b89b7240d9a17ace8a1ed050bdcb560f9e.

We still need to call dcn20_adjust_freesync_v_startup() for older DCN3+
ASICs. Otherwise, it can cause DP to HDMI 2.1 PCONs to fail to light up.

Cc: stable@vger.kernel.org
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2809
Reviewed-by: Fangzhi Zuo 
Reviewed-by: Harry Wentland 
Signed-off-by: Hamza Mahfooz 
Signed-off-by: Alex Deucher

drm/amd/display: always switch off ODM before committing more streams

2023-08-31T22:09:14+00:00

ODM power optimization is only supported with single stream. When ODM
power optimization is enabled, we might not have enough free pipes for
enabling other stream. So when we are committing more than 1 stream we
should first switch off ODM power optimization to make room for new
stream and then allocating pipe resource for the new stream.

Cc: stable@vger.kernel.org
Fixes: 59de751e3845 ("drm/amd/display: add ODM case when looking for first split pipe")
Reviewed-by: Dillon Varone 
Acked-by: Hamza Mahfooz 
Signed-off-by: Wenjing Liu 
Signed-off-by: Alex Deucher