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drm/amdgpu: XGMI pstate switch initial support

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Driver vote low to high pstate switch whenever there is an outstanding
XGMI mapping request. Driver vote high to low pstate when all the
outstanding XGMI mapping is terminated.

Signed-off-by: shaoyunl <shaoyun.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
shaoyunl
2019-03-20 16:14:56 -04:00
committed by Alex Deucher
parent adc7e863f6
commit df399b0641
6 changed files with 56 additions and 1 deletions
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4
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@@ -2018,6 +2018,10 @@ static void amdgpu_device_ip_late_init_func_handler(struct work_struct *work)
r = amdgpu_device_enable_mgpu_fan_boost();
if (r)
DRM_ERROR("enable mgpu fan boost failed (%d).\n", r);
/*set to low pstate by default */
amdgpu_xgmi_set_pstate(adev, 0);
}
static void amdgpu_device_delay_enable_gfx_off(struct work_struct *work)