kernel/linux.git/drivers/gpu/drm/amd/pm/amdgpu_pm.c, branch v6.12.102

drm/amd/pm: make pp_features read-only when scpm is enabled

2026-08-03T09:17:27+00:00

commit 53c78ab388bfc1a4d72e756815d0db0a842c812e upstream. SCPM owns power feature control when enabled. Make pp_features read-only during sysfs setup by clearing its write bits and store callback. Signed-off-by: Yang Wang Reviewed-by: Asad Kamal Signed-off-by: Alex Deucher (cherry picked from commit 6a5786e191fdce36c5db170e5209cf609e8f0087) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

drm/amd/pm: fix amdgpu_pm_info power display units

2026-08-03T09:17:27+00:00

commit 238baca26a6279e688d1a156bd031390b82eb578 upstream. amdgpu_pm_info displayed power sensor readings with the wrong fractional unit. It treated the low byte of the raw sensor value as the decimal part of watts, while that field represents milliwatts in the decoded value. As a result, debugfs could report misleading SoC power when the remainder was not already a two-digit centiwatt value. Example with query = 0x00000354: raw field value --------------------- query >> 8 3 W query & 0xff 84 mW decoded power 3084 mW output value --------------------- before 3.84 W after 3.08 W Fixes: f0b8f65b4825 ("drm/amd/amdgpu: fix the GPU power print error in pm info") Signed-off-by: Yang Wang Reviewed-by: Asad Kamal Signed-off-by: Alex Deucher (cherry picked from commit 01992b121fb652c753d37e0c1427a2d1a557d2b1) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

drm/amd/pm: remove trailing semicolon from AMDGPU_PM_POLICY_ATTR macro

2026-07-24T14:10:43+00:00

[ Upstream commit 0d892afb52d2b940d891b6b52dc9f04debef2d81 ] macros should not include a trailing semicolon as per kernel coding style (checkpatch.pl warning). move the semicolon from the macro definition to the invocation sites instead. checkpatch.pl logs: WARNING: macros should not use a trailing semicolon +#define AMDGPU_PM_POLICY_ATTR(_name, _id) \ + static struct amdgpu_pm_policy_attr pm_policy_attr_##_name = { \ + .dev_attr = __ATTR(_name, 0644, amdgpu_get_pm_policy_attr, \ + amdgpu_set_pm_policy_attr), \ + .id = PP_PM_POLICY_##_id, \ + }; Fixes: 4d154b1ca580 ("drm/amd/pm: Add support for DPM policies") Signed-off-by: Yang Wang Acked-by: Alex Deucher Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amd/amdgpu: disable hwmon power1_cap* for gfx 11.0.3 on vf mode

2025-09-04T13:31:55+00:00

commit 5dff50802b285da8284a7bf17ae2fdc6f1357023 upstream. the PPSMC_MSG_GetPptLimit msg is not valid for gfx 11.0.3 on vf mode, so skiped to create power1_cap* hwmon sysfs node. Signed-off-by: Yang Wang Reviewed-by: Asad Kamal Acked-by: Alex Deucher Signed-off-by: Alex Deucher (cherry picked from commit e82a8d441038d8cb10b63047a9e705c42479d156) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

drm/amd/pm: fix null pointer access

2025-08-20T16:30:30+00:00

[ Upstream commit d524d40e3a6152a3ea1125af729f8cd8ca65efde ] Writing a string without delimiters (' ', '\n', '\0') to the under gpu_od/fan_ctrl sysfs or pp_power_profile_mode for the CUSTOM profile will result in a null pointer dereference. Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4401 Signed-off-by: Umio Yasuno Acked-by: Alex Deucher Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amd/pm: add unique_id for gfx12

2025-03-28T21:03:31+00:00

commit 19b53f96856b5316ee1fd6ca485af0889e001677 upstream. Expose unique_id for gfx12 Signed-off-by: Harish Kasiviswanathan Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher (cherry picked from commit 16fbc18cb07470cd33fb5f37ad181b51583e6dc0) Cc: stable@vger.kernel.org # 6.12.x Signed-off-by: Greg Kroah-Hartman

drm/amd/pm: fix and simplify workload handling

2024-12-14T19:03:28+00:00

commit 1443dd3c67f6d1a8bd1f810e598e2f0c6f19205c upstream. smu->workload_mask is IP specific and should not be messed with in the common code. The mask bits vary across SMU versions. Move all handling of smu->workload_mask in to the backends and simplify the code. Store the user's preference in smu->power_profile_mode which will be reflected in sysfs. For internal driver profile switches for KFD or VCN, just update the workload mask so that the user's preference is retained. Remove all of the extra now unused workload related elements in the smu structure. v2: use refcounts for workload profiles v3: rework based on feedback from Lijo v4: fix the refcount on failure, drop backend mask v5: rework custom handling v6: handle failure cleanup with custom profile v7: Update documentation Reviewed-by: Lijo Lazar Signed-off-by: Alex Deucher Cc: Kenneth Feng Cc: Lijo Lazar Cc: stable@vger.kernel.org # 6.11.x Signed-off-by: Greg Kroah-Hartman

Documentation/amdgpu: Add PM policy documentation

2024-05-20T20:20:26+00:00

Add documentation about the newly added pm_policy node in sysfs. Signed-off-by: Lijo Lazar Acked-by: Alex Deucher Reviewed-by: Asad Kamal Signed-off-by: Alex Deucher

drm/amd/pm: Remove legacy interface for xgmi plpd

2024-05-17T21:40:39+00:00

Replace the legacy interface with amdgpu_dpm_set_pm_policy to set XGMI PLPD mode. Also, xgmi_plpd_policy sysfs node is not used by any client. Remove that as well. Signed-off-by: Lijo Lazar Reviewed-by: Hawking Zhang Reviewed-by: Asad Kamal Acked-by: Alex Deucher Signed-off-by: Alex Deucher

drm/amd/pm: Add xgmi plpd policy to pm_policy

2024-05-17T21:40:39+00:00

Add support to set XGMI PLPD policy levels through 'pm_policy/xgmi_plpd' sysfs node. Signed-off-by: Lijo Lazar Acked-by: Alex Deucher Reviewed-by: Asad Kamal Signed-off-by: Alex Deucher