ACPI / scan: Add support for ACPI _CLS device matching

[firefly-linux-kernel-4.4.55.git] / include / linux / acpi.h

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 1618cdfb38c7b8e312f4a39b412593d4c480bc07..bdfdb9f65c23985c53ed27caa6decb65b519567d 100644 (file)
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -53,11 +53,24 @@ static inline acpi_handle acpi_device_handle(struct acpi_device *adev)
        return adev ? adev->handle : NULL;
 }
 
-#define ACPI_COMPANION(dev)            acpi_node((dev)->fwnode)
+#define ACPI_COMPANION(dev)            to_acpi_node((dev)->fwnode)
 #define ACPI_COMPANION_SET(dev, adev)  set_primary_fwnode(dev, (adev) ? \
        acpi_fwnode_handle(adev) : NULL)
 #define ACPI_HANDLE(dev)               acpi_device_handle(ACPI_COMPANION(dev))
 
+/**
+ * ACPI_DEVICE_CLASS - macro used to describe an ACPI device with
+ * the PCI-defined class-code information
+ *
+ * @_cls : the class, subclass, prog-if triple for this device
+ * @_msk : the class mask for this device
+ *
+ * This macro is used to create a struct acpi_device_id that matches a
+ * specific PCI class. The .id and .driver_data fields will be left
+ * initialized with the default value.
+ */
+#define ACPI_DEVICE_CLASS(_cls, _msk)  .cls = (_cls), .cls_msk = (_msk),
+
 static inline bool has_acpi_companion(struct device *dev)
 {
        return is_acpi_node(dev->fwnode);
@@ -446,6 +459,7 @@ struct platform_device *acpi_create_platform_device(struct acpi_device *);
 #define ACPI_COMPANION(dev)            (NULL)
 #define ACPI_COMPANION_SET(dev, adev)  do { } while (0)
 #define ACPI_HANDLE(dev)               (NULL)
+#define ACPI_DEVICE_CLASS(_cls, _msk)  .cls = (0), .cls_msk = (0),
 
 struct fwnode_handle;
 
@@ -454,7 +468,7 @@ static inline bool is_acpi_node(struct fwnode_handle *fwnode)
        return false;
 }
 
-static inline struct acpi_device *acpi_node(struct fwnode_handle *fwnode)
+static inline struct acpi_device *to_acpi_node(struct fwnode_handle *fwnode)
 {
        return NULL;
 }