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drm/amdgpu: disable smu hw first on tear down 

Otherwise, you can't disable dpm.

Tested-by and Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
hifive-unleashed-5.1
Alex Deucher 2016-10-13 11:22:17 -04:00
parent da146d3b52
commit 3e96dbfd58
1 changed files with 24 additions and 0 deletions
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24
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@ -1437,6 +1437,30 @@ static int amdgpu_fini(struct amdgpu_device *adev)
{
int i, r;
/* need to disable SMC first */
for (i = 0; i < adev->num_ip_blocks; i++) {
if (!adev->ip_block_status[i].hw)
continue;
if (adev->ip_blocks[i].type == AMD_IP_BLOCK_TYPE_SMC) {
/* ungate blocks before hw fini so that we can shutdown the blocks safely */
r = adev->ip_blocks[i].funcs->set_clockgating_state((void *)adev,
AMD_CG_STATE_UNGATE);
if (r) {
DRM_ERROR("set_clockgating_state(ungate) of IP block <%s> failed %d\n",
adev->ip_blocks[i].funcs->name, r);
return r;
}
r = adev->ip_blocks[i].funcs->hw_fini((void *)adev);
/* XXX handle errors */
if (r) {
DRM_DEBUG("hw_fini of IP block <%s> failed %d\n",
adev->ip_blocks[i].funcs->name, r);
}
adev->ip_block_status[i].hw = false;
break;
}
}
for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
if (!adev->ip_block_status[i].hw)
continue;