drm/amd/amdgpu: Disabling Power Gating for Stoney platform

Power Gating is disabled in Stoney platform.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c

@@ -285,7 +285,7 @@ static int acp_hw_init(void *handle)
 		return 0;
 	else if (r)
 		return r;
-
+	if (adev->asic_type != CHIP_STONEY) {
 		adev->acp.acp_genpd = kzalloc(sizeof(struct acp_pm_domain), GFP_KERNEL);
 		if (adev->acp.acp_genpd == NULL)
 			return -ENOMEM;
@@ -298,6 +298,7 @@ static int acp_hw_init(void *handle)
 		adev->acp.acp_genpd->cgs_dev = adev->acp.cgs_device;
 
 		pm_genpd_init(&adev->acp.acp_genpd->gpd, NULL, false);
+	}
 
 	adev->acp.acp_cell = kzalloc(sizeof(struct mfd_cell) * ACP_DEVS,
 							GFP_KERNEL);
@@ -388,6 +389,7 @@ static int acp_hw_init(void *handle)
 	if (r)
 		return r;
 
+	if (adev->asic_type != CHIP_STONEY) {
 		for (i = 0; i < ACP_DEVS ; i++) {
 			dev = get_mfd_cell_dev(adev->acp.acp_cell[i].name, i);
 			r = pm_genpd_add_device(&adev->acp.acp_genpd->gpd, dev);
@@ -396,6 +398,7 @@ static int acp_hw_init(void *handle)
 				return r;
 			}
 		}
+	}
 
 	return 0;
 }
@@ -413,9 +416,10 @@ static int acp_hw_fini(void *handle)
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
 	/* return early if no ACP */
-	if (!adev->acp.acp_genpd)
+	if (!adev->acp.acp_cell)
 		return 0;
 
+	if (adev->acp.acp_genpd) {
 		for (i = 0; i < ACP_DEVS ; i++) {
 			dev = get_mfd_cell_dev(adev->acp.acp_cell[i].name, i);
 			ret = pm_genpd_remove_device(&adev->acp.acp_genpd->gpd, dev);
@@ -423,10 +427,11 @@ static int acp_hw_fini(void *handle)
 			if (ret)
 				dev_err(dev, "remove dev from genpd failed\n");
 		}
+		kfree(adev->acp.acp_genpd);
+	}
 
 	mfd_remove_devices(adev->acp.parent);
 	kfree(adev->acp.acp_res);
-	kfree(adev->acp.acp_genpd);
 	kfree(adev->acp.acp_cell);
 
 	return 0;