drm/radeon/kms/pm: restore default power state on exit

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/radeon/r100.c

@@ -123,6 +123,10 @@ void r100_get_power_state(struct radeon_device *rdev,
 					rdev->pm.current_power_state_index + 1;
 		}
 		break;
+	case PM_ACTION_DEFAULT:
+		rdev->pm.requested_power_state_index = rdev->pm.default_power_state_index;
+		rdev->pm.can_upclock = false;
+		break;
 	case PM_ACTION_NONE:
 	default:
 		DRM_ERROR("Requested mode for not defined action\n");

drivers/gpu/drm/radeon/r600.c

@@ -161,6 +161,11 @@ void r600_get_power_state(struct radeon_device *rdev,
 			}
 			rdev->pm.requested_clock_mode_index = 0;
 			break;
+		case PM_ACTION_DEFAULT:
+			rdev->pm.requested_power_state_index = rdev->pm.default_power_state_index;
+			rdev->pm.requested_clock_mode_index = 0;
+			rdev->pm.can_upclock = false;
+			break;
 		case PM_ACTION_NONE:
 		default:
 			DRM_ERROR("Requested mode for not defined action\n");
@@ -221,6 +226,11 @@ void r600_get_power_state(struct radeon_device *rdev,
 				rdev->pm.can_upclock = false;
 			}
 			break;
+		case PM_ACTION_DEFAULT:
+			rdev->pm.requested_power_state_index = rdev->pm.default_power_state_index;
+			rdev->pm.requested_clock_mode_index = 0;
+			rdev->pm.can_upclock = false;
+			break;
 		case PM_ACTION_NONE:
 		default:
 			DRM_ERROR("Requested mode for not defined action\n");

drivers/gpu/drm/radeon/radeon.h

@@ -615,7 +615,8 @@ enum radeon_pm_action {
 	PM_ACTION_NONE,
 	PM_ACTION_MINIMUM,
 	PM_ACTION_DOWNCLOCK,
-	PM_ACTION_UPCLOCK
+	PM_ACTION_UPCLOCK,
+	PM_ACTION_DEFAULT
 };
 
 enum radeon_voltage_type {

drivers/gpu/drm/radeon/radeon_pm.c

@@ -125,6 +125,15 @@ int radeon_pm_init(struct radeon_device *rdev)
 
 void radeon_pm_fini(struct radeon_device *rdev)
 {
+	if (rdev->pm.state != PM_STATE_DISABLED) {
+		/* cancel work */
+		cancel_delayed_work_sync(&rdev->pm.idle_work);
+		/* reset default clocks */
+		rdev->pm.state = PM_STATE_DISABLED;
+		rdev->pm.planned_action = PM_ACTION_DEFAULT;
+		radeon_pm_set_clocks(rdev);
+	}
+
 	if (rdev->pm.i2c_bus)
 		radeon_i2c_destroy(rdev->pm.i2c_bus);
 }