[PATCH 3/3] drm/amdgpu: add new INFO IOCTL query for input power
Alex Deucher
alexander.deucher at amd.com
Thu Nov 9 22:14:00 UTC 2023
Some chips provide both average and input power. Previously
we just exposed average power, add a new query for input
power.
Example userspace:
https://github.com/Umio-Yasuno/libdrm-amdgpu-sys-rs/tree/input_power
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 9 +++++++++
include/uapi/drm/amdgpu_drm.h | 2 ++
2 files changed, 11 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index bf4f48fe438d..48496bb585c7 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -1114,6 +1114,15 @@ int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
}
ui32 >>= 8;
break;
+ case AMDGPU_INFO_SENSOR_GPU_INPUT_POWER:
+ /* get input GPU power */
+ if (amdgpu_dpm_read_sensor(adev,
+ AMDGPU_PP_SENSOR_GPU_INPUT_POWER,
+ (void *)&ui32, &ui32_size)) {
+ return -EINVAL;
+ }
+ ui32 >>= 8;
+ break;
case AMDGPU_INFO_SENSOR_VDDNB:
/* get VDDNB in millivolts */
if (amdgpu_dpm_read_sensor(adev,
diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
index ad21c613fec8..96e32dafd4f0 100644
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -865,6 +865,8 @@ struct drm_amdgpu_cs_chunk_cp_gfx_shadow {
#define AMDGPU_INFO_SENSOR_PEAK_PSTATE_GFX_SCLK 0xa
/* Subquery id: Query GPU peak pstate memory clock */
#define AMDGPU_INFO_SENSOR_PEAK_PSTATE_GFX_MCLK 0xb
+ /* Subquery id: Query input GPU power */
+ #define AMDGPU_INFO_SENSOR_GPU_INPUT_POWER 0xc
/* Number of VRAM page faults on CPU access. */
#define AMDGPU_INFO_NUM_VRAM_CPU_PAGE_FAULTS 0x1E
#define AMDGPU_INFO_VRAM_LOST_COUNTER 0x1F
--
2.41.0
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