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 <alexander.deucher@xxxxxxx>
---
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
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