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drm/amdgpu: clarify UVD/VCE special handling for CG

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UVD and VCE CG are handled specially, however the previous
fix for this skipped late init for those blocks rather than
just CG.  Just protect the CG function call.  No functional
change since UVD and VCE don't currently utilize a late_init
function.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2016-10-07 14:48:18 -04:00
parent b0b00ff16f
commit 4a446d5584
1 changed files with 11 additions and 9 deletions
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20
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@ -1408,9 +1408,6 @@ static int amdgpu_late_init(struct amdgpu_device *adev)
for (i = 0; i < adev->num_ip_blocks; i++) {
if (!adev->ip_block_status[i].valid)
continue;
if (adev->ip_blocks[i].type == AMD_IP_BLOCK_TYPE_UVD ||
adev->ip_blocks[i].type == AMD_IP_BLOCK_TYPE_VCE)
continue;
if (adev->ip_blocks[i].funcs->late_init) {
r = adev->ip_blocks[i].funcs->late_init((void *)adev);
if (r) {
@ -1419,12 +1416,17 @@ static int amdgpu_late_init(struct amdgpu_device *adev)
}
adev->ip_block_status[i].late_initialized = true;
}
/* enable clockgating to save power */
r = adev->ip_blocks[i].funcs->set_clockgating_state((void *)adev,
AMD_CG_STATE_GATE);
if (r) {
DRM_ERROR("set_clockgating_state(gate) of IP block <%s> failed %d\n", adev->ip_blocks[i].funcs->name, r);
return r;
/* skip CG for VCE/UVD, it's handled specially */
if (adev->ip_blocks[i].type != AMD_IP_BLOCK_TYPE_UVD &&
adev->ip_blocks[i].type != AMD_IP_BLOCK_TYPE_VCE) {
/* enable clockgating to save power */
r = adev->ip_blocks[i].funcs->set_clockgating_state((void *)adev,
AMD_CG_STATE_GATE);
if (r) {
DRM_ERROR("set_clockgating_state(gate) of IP block <%s> failed %d\n",
adev->ip_blocks[i].funcs->name, r);
return r;
}
}
}