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| author | Lijo Lazar <lijo.lazar@amd.com> | 2026-09-18 09:15:48 +0530 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-09-23 14:21:23 -0400 |
| commit | e53e12cb4ccb95e19c5efeb8172ff79a7ace963d (patch) | |
| tree | 3256318d0f134846f8ea8054db091ab0e046861d /drivers/gpu/drm/amd/include | |
| parent | b51576a5d53eaf53e07b07c4841f6981e542b63c (diff) | |
| download | linux-next-e53e12cb4ccb95e19c5efeb8172ff79a7ace963d.tar.gz linux-next-e53e12cb4ccb95e19c5efeb8172ff79a7ace963d.zip | |
drm/amd/pm: Create NPM sysfs files from capability
Advertise each NPM board attribute from a per-field R/W bitmap instead of
probing a single sensor. SMU 13.0.6/13.0.12 reports the cap only when NPM
metrics and MaxNodePowerLimit are present.
Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Assisted-by: Cursor Grok 4.6
Reviewed-by: Asad Kamal <asad.kamal@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/include')
| -rw-r--r-- | drivers/gpu/drm/amd/include/kgd_pp_interface.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/include/kgd_pp_interface.h b/drivers/gpu/drm/amd/include/kgd_pp_interface.h index 606d48115301..5e8476c4b808 100644 --- a/drivers/gpu/drm/amd/include/kgd_pp_interface.h +++ b/drivers/gpu/drm/amd/include/kgd_pp_interface.h @@ -174,6 +174,21 @@ enum amd_pp_sensors { AMDGPU_PP_SENSOR_UBB_POWER_LIMIT, }; +/* + * NPM sysfs capability bitmap: two bits per field, R then W. + * 00 = unsupported, 01 = read-only, 1x = writable (or RW). + */ +enum amdgpu_npm_cap_field { + AMDGPU_NPM_CAP_CUR_NODE_POWER_LIMIT, + AMDGPU_NPM_CAP_NODE_POWER, + AMDGPU_NPM_CAP_GLOBAL_PPT_RESID, + AMDGPU_NPM_CAP_MAX_NODE_POWER_LIMIT, + AMDGPU_NPM_CAP_NPM_STATUS, +}; + +#define AMDGPU_NPM_CAP_R(field) BIT_ULL((field) * 2) +#define AMDGPU_NPM_CAP_W(field) BIT_ULL((field) * 2 + 1) + enum amd_pp_task { AMD_PP_TASK_DISPLAY_CONFIG_CHANGE, AMD_PP_TASK_ENABLE_USER_STATE, @@ -513,6 +528,7 @@ struct amd_pm_funcs { ssize_t (*get_gpu_metrics)(void *handle, void **table); ssize_t (*get_temp_metrics)(void *handle, enum smu_temp_metric_type type, void *table); bool (*temp_metrics_is_supported)(void *handle, enum smu_temp_metric_type type); + u64 (*get_npm_cap)(void *handle); ssize_t (*get_xcp_metrics)(void *handle, int xcp_id, void *table); ssize_t (*get_pm_metrics)(void *handle, void *pmmetrics, size_t size); int (*set_watermarks_for_clock_ranges)(void *handle, |