~hc/RK356X_SDK_RELEASE.git

..	..	@@ -1326,4 +1326,33 @@
1326	1326	return 1;
1327	1327	}
1328	1328	EXPORT_SYMBOL_GPL(acpi_dev_pm_attach);
	1329	+
	1330	+/**
	1331	+ * acpi_storage_d3 - Check if D3 should be used in the suspend path
	1332	+ * @dev: Device to check
	1333	+ *
	1334	+ * Return %true if the platform firmware wants @dev to be programmed
	1335	+ * into D3hot or D3cold (if supported) in the suspend path, or %false
	1336	+ * when there is no specific preference. On some platforms, if this
	1337	+ * hint is ignored, @dev may remain unresponsive after suspending the
	1338	+ * platform as a whole.
	1339	+ *
	1340	+ * Although the property has storage in the name it actually is
	1341	+ * applied to the PCIe slot and plugging in a non-storage device the
	1342	+ * same platform restrictions will likely apply.
	1343	+ */
	1344	+bool acpi_storage_d3(struct device *dev)
	1345	+{
	1346	+ struct acpi_device *adev = ACPI_COMPANION(dev);
	1347	+ u8 val;
	1348	+
	1349	+ if (!adev)
	1350	+ return false;
	1351	+ if (fwnode_property_read_u8(acpi_fwnode_handle(adev), "StorageD3Enable",
	1352	+ &val))
	1353	+ return false;
	1354	+ return val == 1;
	1355	+}
	1356	+EXPORT_SYMBOL_GPL(acpi_storage_d3);
	1357	+
1329	1358	#endif /* CONFIG_PM */