kernel/linux.git/drivers/gpu/drm/amd/display/dc/dm_services.h, branch v6.19.11

drm/amd/display: Refactor SMU tracing

2025-09-23T14:31:51+00:00

[WHY&HOW] Add new tracing and performance measurements for SMU messaging. Reviewed-by: Alvin Lee Signed-off-by: Dillon Varone Signed-off-by: Ivan Lipski Tested-by: Dan Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Disable VRR on DCE 6

2025-09-15T21:04:28+00:00

DCE 6 was not advertised as being able to support VRR, so let's mark it as unsupported for now. The VRR implementation in amdgpu_dm depends on the VUPDATE interrupt which is not registered for DCE 6. Signed-off-by: Timur Kristóf Reviewed-by: Rodrigo Siqueira Reviewed-by: Alex Deucher Reviewed-by: Alex Hung Signed-off-by: Alex Deucher

drm/amd/display: ACPI Re-timer Programming

2025-02-25T16:44:36+00:00

[Why] We must implement an ACPI re-timer programming interface and notify ACPI driver whenever a PHY transition is about to take place. Because some trace lengths on certain platforms are very long, then a re-timer may need to be programmed whenever a PHY transition takes place. The implementation of this re-timer programming interface will notify ACPI driver that PHY transition is taking place and it will trigger the re-timer as needed. First we need to gather retimer information from ACPI interface. Then, in the PRE case, the re-timer interface needs to be called before we call transmitter ENABLE. In the POST case, it has to be called after we call transmitter DISABLE. [How] Implemented ACPI retimer programming interface. Reviewed-by: Alvin Lee Signed-off-by: Rafal Ostrowski Signed-off-by: Zaeem Mohamed Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Change parameters to fix certain compiler errors

2024-11-08T16:45:29+00:00

[Why] String literals must be assigned to const char pointers. [How] By adding const keyword to fix compilation errors. Reviewed-by: Lohita Mudimela Signed-off-by: Revalla Hari Krishna Signed-off-by: Hamza Mahfooz Signed-off-by: Alex Deucher

drm/amd/display: Add dummy interface for tracing DCN32 SMU messages

2024-04-10T02:03:13+00:00

[Why/How] Some issues may require a trace of the previous SMU messages from DC to understand the context and aid in debugging. Actual logging to be implemented when needed. Reviewed-by: Josip Pavic Acked-by: Roman Li Signed-off-by: George Shen Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Show the DCN/DCE version in the log

2023-06-09T13:34:09+00:00

Some times people send their dmesg log for debugging, and one common task is to check the modesetting line to catch which DCN/DCE we need to debug. This commit introduces a simple conversion from the DCN/DCE version to a string shown in the dmesg log. Reviewed-by: Hamza Mahfooz Acked-by: Alex Hung Signed-off-by: Rodrigo Siqueira Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: refactor dmub commands into single function

2023-04-18T20:28:52+00:00

[Why & How] Consolidate dmub access to a single interface. This makes it easier to add code in the future that needs to run every time a dmub command is requested (e.g. instrumentation, locking etc). Reviewed-by: Nicholas Kazlauskas Acked-by: Qingqing Zhuo Signed-off-by: Josip Pavic Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Decouple amdgpu_dm_trace from service

2020-10-26T17:33:59+00:00

Our DC currently uses some of the tracepoint function inside a DC header, which means that many other files implicitly include part of the trace function. This situation limits how we can expand this feature for other parts of the driver by generating multiple compilation errors when we try to reuse some of the existing structures. This commit decouples part of the amdgpu_dm_trace from DC core to simplify the trace enlargement in future changes. Signed-off-by: Rodrigo Siqueira Acked-by: Aurabindo Pillai Signed-off-by: Alex Deucher

drm/amd/display: Handle persistence in DM

2020-05-28T18:00:47+00:00

[Why] Remove dm_write_persistent_data and dm_read_persistent_data as persistence should be handled in DM. [How] Remove functions. Move read/write calls into DM layer while maintaining logic. Signed-off-by: Jaehyun Chung Reviewed-by: Anthony Koo Acked-by: Rodrigo Siqueira Signed-off-by: Alex Deucher

drm/amd/display: Drop CONFIG_DRM_AMD_DC_DMUB guards

2019-11-13T20:29:42+00:00

[Why] Support for DMUB only depends on support for DC. It doesn't use floating point so we don't need to guard it by any specific DCN revision. [How] Drop the guards and cleanup the newlines around each one. Signed-off-by: Nicholas Kazlauskas Reviewed-by: Hersen Wu Acked-by: Harry Wentland Signed-off-by: Alex Deucher