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>

1 files changed, 28 insertions, 23 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
index 2d3fb005355d..a52795d9b458 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
@@ -285,19 +285,20 @@ 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;
 
-        adev->acp.acp_genpd = kzalloc(sizeof(struct acp_pm_domain), GFP_KERNEL);
-        if (adev->acp.acp_genpd == NULL)
-                return -ENOMEM;
-
-        adev->acp.acp_genpd->gpd.name = "ACP_AUDIO";
-        adev->acp.acp_genpd->gpd.power_off = acp_poweroff;
-        adev->acp.acp_genpd->gpd.power_on = acp_poweron;
+                adev->acp.acp_genpd->gpd.name = "ACP_AUDIO";
+                adev->acp.acp_genpd->gpd.power_off = acp_poweroff;
+                adev->acp.acp_genpd->gpd.power_on = acp_poweron;
 
 
-        adev->acp.acp_genpd->cgs_dev = adev->acp.cgs_device;
+                adev->acp.acp_genpd->cgs_dev = adev->acp.cgs_device;
 
-        pm_genpd_init(&adev->acp.acp_genpd->gpd, NULL, false);
+                pm_genpd_init(&adev->acp.acp_genpd->gpd, NULL, false);
+        }
 
         adev->acp.acp_cell = kzalloc(sizeof(struct mfd_cell) * ACP_DEVS,
                                                         GFP_KERNEL);
@@ -388,12 +389,14 @@ static int acp_hw_init(void *handle)
         if (r)
                 return r;
 
-        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);
-                if (r) {
-                        dev_err(dev, "Failed to add dev to genpd\n");
-                        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);
+                        if (r) {
+                                dev_err(dev, "Failed to add dev to genpd\n");
+                                return r;
+                        }
                 }
         }
 
@@ -413,20 +416,22 @@ 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;
 
-        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);
-                /* If removal fails, dont giveup and try rest */
-                if (ret)
-                        dev_err(dev, "remove dev from genpd failed\n");
+        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);
+                        /* If removal fails, dont giveup and try rest */
+                        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;