dm: core: Add a function to bind a driver for a device tree node

Some device tree nodes do not have compatible strings but do require drivers. This is pretty rare, and somewhat unfortunate. Add a function to permit creation of a driver for any device tree node. Signed-off-by: Simon Glass <sjg@chromium.org>

dm: core: Add a function to bind a driver for a device tree node
Some device tree nodes do not have compatible strings but do require drivers. This is pretty rare, and somewhat unfortunate. Add a function to permit creation of a driver for any device tree node. Signed-off-by: Simon Glass <sjg@chromium.org>
Simon Glass
1 parent 4c509343ab
Showing 2 changed files with 24 additions and 1 deletions Side-by-side Diff
drivers/core/lists.c
include/dm/lists.h
@@ -74,6 +74,13 @@
 int device_bind_driver(struct udevice *parent, const char *drv_name,
 		       const char *dev_name, struct udevice **devp)
 {
+	return device_bind_driver_to_node(parent, drv_name, dev_name, -1, devp);
+}
+
+int device_bind_driver_to_node(struct udevice *parent, const char *drv_name,
+			       const char *dev_name, int node,
+			       struct udevice **devp)
+{
 	struct driver *drv;
 	int ret;
  
@@ -82,7 +89,7 @@
 		printf("Cannot find driver '%s'\n", drv_name);
 		return -ENOENT;
 	}
-	ret = device_bind(parent, drv, dev_name, NULL, -1, devp);
+	ret = device_bind(parent, drv, dev_name, NULL, node, devp);
 	if (ret) {
 		printf("Cannot create device named '%s' (err=%d)\n",
 		       dev_name, ret);
@@ -73,5 +73,21 @@
 int device_bind_driver(struct udevice *parent, const char *drv_name,
 		       const char *dev_name, struct udevice **devp);
  
+/**
+ * device_bind_driver_to_node() - bind a device to a driver for a node
+ *
+ * This binds a new device to a driver for a given device tree node. This
+ * should only be needed if the node lacks a compatible strings.
+ *
+ * @parent:	Parent device
+ * @drv_name:	Name of driver to attach to this parent
+ * @dev_name:	Name of the new device thus created
+ * @node:	Device tree node
+ * @devp:	Returns the newly bound device
+ */
+int device_bind_driver_to_node(struct udevice *parent, const char *drv_name,
+			       const char *dev_name, int node,
+			       struct udevice **devp);
+
 #endif
...	...	@@ -74,6 +74,13 @@
74	74	int device_bind_driver(struct udevice parent, const char drv_name,
75	75	const char dev_name, struct udevice *devp)
76	76	{
	77	+ return device_bind_driver_to_node(parent, drv_name, dev_name, -1, devp);
	78	+}
	79	+
	80	+int device_bind_driver_to_node(struct udevice parent, const char drv_name,
	81	+ const char *dev_name, int node,
	82	+ struct udevice **devp)
	83	+{
77	84	struct driver *drv;
78	85	int ret;
79	86
...	...	@@ -82,7 +89,7 @@
82	89	printf("Cannot find driver '%s'\n", drv_name);
83	90	return -ENOENT;
84	91	}
85		- ret = device_bind(parent, drv, dev_name, NULL, -1, devp);
	92	+ ret = device_bind(parent, drv, dev_name, NULL, node, devp);
86	93	if (ret) {
87	94	printf("Cannot create device named '%s' (err=%d)\n",
88	95	dev_name, ret);
...	...	@@ -73,5 +73,21 @@
73	73	int device_bind_driver(struct udevice parent, const char drv_name,
74	74	const char dev_name, struct udevice *devp);
75	75
	76	+/**
	77	+ * device_bind_driver_to_node() - bind a device to a driver for a node
	78	+ *
	79	+ * This binds a new device to a driver for a given device tree node. This
	80	+ * should only be needed if the node lacks a compatible strings.
	81	+ *
	82	+ * @parent: Parent device
	83	+ * @drv_name: Name of driver to attach to this parent
	84	+ * @dev_name: Name of the new device thus created
	85	+ * @node: Device tree node
	86	+ * @devp: Returns the newly bound device
	87	+ */
	88	+int device_bind_driver_to_node(struct udevice parent, const char drv_name,
	89	+ const char *dev_name, int node,
	90	+ struct udevice **devp);
	91	+
76	92	#endif