Suspend is used for S3/S4, GPU reset, and PCI shutdown. In each case, we need to put the SMC into the proper state in order to resume or reload correctly.
Signed-off-by: Alex Deucher <[email protected]> --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 33 ++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 4425ff06ecc4..bb4260648a97 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -2174,6 +2174,39 @@ static int amdgpu_device_ip_suspend_phase2(struct amdgpu_device *adev) DRM_ERROR("suspend of IP block <%s> failed %d\n", adev->ip_blocks[i].version->funcs->name, r); } + /* handle putting the SMC in the appropriate state */ + if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_SMC) { + enum pp_mp1_state mp1_state = PP_MP1_STATE_NONE; + + if (adev->in_gpu_reset) { + switch (amdgpu_asic_reset_method(adev)) { + case AMD_RESET_METHOD_MODE1: + case AMD_RESET_METHOD_BACO: + mp1_state = PP_MP1_STATE_SHUTDOWN; + break; + case AMD_RESET_METHOD_MODE2: + mp1_state = PP_MP1_STATE_RESET; + break; + default: + mp1_state = PP_MP1_STATE_NONE; + break; + } + } else if (adev->in_gpu_shutdown) { + mp1_state = PP_MP1_STATE_UNLOAD; + } + if (is_support_sw_smu(adev)) { + /* todo */ + } else if (adev->powerplay.pp_funcs && + adev->powerplay.pp_funcs->set_mp1_state) { + r = adev->powerplay.pp_funcs->set_mp1_state( + adev->powerplay.pp_handle, + mp1_state); + if (r) { + DRM_ERROR("SMC failed to set mp1 state %d, %d\n", + mp1_state, r); + } + } + } } return 0; -- 2.20.1 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
