linux/Documentation/gpu/amdgpu, branch for-next

drm/amdgpu: Add documentation for enforce isolation feature

2024-11-08T16:45:29Z

This feature enables process isolation on the graphics engine by serializing access to it and adding a cleaner shader which clears LDS (Local Data Store) and GPRs (General Purpose Registers) between jobs. Cc: Christian König Cc: Alex Deucher Signed-off-by: Srinivasan Shanmugam Suggested-by: Alex Deucher Suggested-by: Asad Kamal Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher

drm/amd/pm: add zero RPM stop temperature OD setting support for SMU13

2024-11-05T15:33:47Z

Together with the feature to enable or disable zero RPM in the last commit, it also makes sense to expose the OD setting determining under which temperature the fan should stop if zero RPM is enabled. Reviewed-by: Kenneth Feng Signed-off-by: Wolfgang Müller Signed-off-by: Alex Deucher

drm/amd/pm: add zero RPM OD setting support for SMU13

2024-11-05T15:33:30Z

Whilst we have support for setting fan curves there is no support for disabling the zero RPM feature. Since the relevant bits are already present in the OverDriveTable, hook them up to a sysctl setting so users can influence this behaviour. Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3489 Reviewed-by: Kenneth Feng Signed-off-by: Wolfgang Müller Signed-off-by: Alex Deucher

Documentation/gpu/amdgpu: Add programming model for DCN

2024-10-24T22:07:05Z

One of the challenges to contributing to the display code is the complexity of the DC component. This commit adds a documentation page that discusses the programming model used by DCN and an overview of how the display code is organized. Cc: Leo Li Cc: Aurabindo Pillai Cc: Hamza Mahfooz Cc: Harry Wentland Cc: Mario Limonciello Cc: Christian Konig Cc: Alex Deucher Signed-off-by: Rodrigo Siqueira Reviewed-by: Harry Wentland Signed-off-by: Alex Deucher

Documentation/gpu: Document how to narrow down display issues

2024-10-24T22:06:57Z

The amdgpu driver is composed of multiple components, each of which can be a source of some specific problem that the user/developer can see. This commit introduces steps to narrow down and collect display information. Cc: Leo Li Cc: Aurabindo Pillai Cc: Hamza Mahfooz Cc: Harry Wentland Cc: Mario Limonciello Cc: Christian Konig Cc: Alex Deucher Signed-off-by: Rodrigo Siqueira Reviewed-by: Mario Limonciello Signed-off-by: Alex Deucher

drm/amd: Introduce additional IPS debug flags

2024-08-27T21:51:32Z

[Why] Idle power states (IPS) describe levels of power-gating within DCN. DM and DC is responsible for ensuring that we are out of IPS before any DCN programming happens. Any DCN programming while we're in IPS leads to undefined behavior (mostly hangs). Because IPS intersects with all display features, the ability to disable IPS by default while ironing out the known issues is desired. However, disabing it completely will cause important features such as s0ix entry to fail. Therefore, more granular IPS debug flags are desired. [How] Extend the dc debug mask bits to include the available list of IPS debug flags. All the flags should work as documented, with the exception of IPS_DISABLE_DYNAMIC. It requires dm changes which will be done in later changes. v2: enable docs and fix docstring format Signed-off-by: Leo Li Reviewed-by: Aurabindo Pillai Signed-off-by: Alex Deucher

Documentation/amdgpu: Fix duplicate declaration

2024-07-16T15:45:22Z

Address the below kernel doc warning: Documentation/gpu/amdgpu/display/display-manager:134: drivers/gpu/drm/amd/display/dc/inc/hw/mpc.h:3: WARNING: Duplicate C declaration, also defined at gpu/amdgpu/display/dcn-blocks:101. Declaration is '.. c:struct:: mpcc_blnd_cfg'. Documentation/gpu/amdgpu/display/display-manager:146: drivers/gpu/drm/amd/display/dc/inc/hw/mpc.h:3: WARNING: Duplicate C declaration, also defined at gpu/amdgpu/display/dcn-blocks:3. Declaration is '.. c:enum:: mpcc_alpha_blend_mode'. To address the above warnings, this commit uses the 'no-identifiers' option in the dcn-blocks to avoid duplication with the previous use of this function doc in the display-manager file. Finally, replaces the deprecated ':function:' in favor of ':identifiers:'. Cc: Alex Deucher Acked-by: Alex Deucher Reported-by: Stephen Rothwell Signed-off-by: Rodrigo Siqueira Signed-off-by: Alex Deucher

Documentation/gpu: Remove undocumented files from dcn-blockshubbub.h

2024-07-16T15:45:16Z

The dchubbub.h and hubp.h do not have any meaningful documentation; for this reason, this commit removes those files from the dcn-blocks documentation. Cc: Alex Deucher Acked-by: Alex Deucher Reported-by: Stephen Rothwell Signed-off-by: Rodrigo Siqueira Signed-off-by: Alex Deucher

Documentation/gpu: Adjust DCN documentation paths

2024-07-16T15:45:02Z

When building the kernel-doc, it has the following complaints: Documentation/gpu/amdgpu/display/dcn-blocks:23: drivers/gpu/drm/amd/display/dc/inc/hw/hubp.h:3: WARNING: Duplicate C declaration, also defined at gpu/amdgpu/display/dcn-blocks:3. Declaration is '.. c:struct:: surface_flip_registers'. Documentation/gpu/amdgpu/display/dcn-blocks:35: drivers/gpu/drm/amd/display/dc/inc/hw/hubp.h:3: WARNING: Duplicate C declaration, also defined at gpu/amdgpu/display/dcn-blocks:3. Declaration is '.. c:struct:: surface_flip_registers'. This error happened due to a copy-and-paste where the same file path was duplicated multiple times to a different set of blocks. This commit addresses this issue by using the correct file path. Cc: Alex Deucher Acked-by: Alex Deucher Reported-by: Stephen Rothwell Signed-off-by: Rodrigo Siqueira Signed-off-by: Alex Deucher

Documentation/gpu: Remove ':export:' option from DCN documentation

2024-07-16T15:44:56Z

This commit reduces, but does not fix, all the occurrences and some of the documentation warnings related to the 'no structured comments.' This was caused by the wrong use of the ':export:' option in the DCN kernel-doc, so this commit drops the usage of those options. Acked-by: Alex Deucher Reported-by: Stephen Rothwell Signed-off-by: Rodrigo Siqueira Signed-off-by: Alex Deucher