uclass: Add dev_get_uclass_index() to get the uclass/index of a device

[oweals/u-boot.git] / include / dm / uclass-internal.h

diff --git a/include/dm/uclass-internal.h b/include/dm/uclass-internal.h
index 9b68508667123e0261691a1d4dbbf4ec7c91dffd..30d5a4fb9bf144e8b3c1d7b7e1aab7bb97e58dd9 100644 (file)
--- a/include/dm/uclass-internal.h
+++ b/include/dm/uclass-internal.h
@@ -1,15 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (c) 2013 Google, Inc
  *
  * (C) Copyright 2012
  * Pavel Herrmann <morpheus.ibis@gmail.com>
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #ifndef _DM_UCLASS_INTERNAL_H
 #define _DM_UCLASS_INTERNAL_H
 
+#include <dm/ofnode.h>
+
 /**
  * uclass_get_device_tail() - handle the end of a get_device call
  *
@@ -22,6 +23,17 @@
  */
 int uclass_get_device_tail(struct udevice *dev, int ret, struct udevice **devp);
 
+/**
+ * dev_get_uclass_index() - Get uclass and index of device
+ * @dev:       - in - Device that we want the uclass/index of
+ * @ucp:       - out - A pointer to the uclass the device belongs to
+ *
+ * The device is not prepared for use - this is an internal function.
+ *
+ * @return the index of the device in the uclass list or -ENODEV if not found.
+ */
+int dev_get_uclass_index(struct udevice *dev, struct uclass **ucp);
+
 /**
  * uclass_find_device() - Return n-th child of uclass
  * @id:                Id number of the uclass
@@ -98,6 +110,38 @@ int uclass_find_device_by_name(enum uclass_id id, const char *name,
 int uclass_find_device_by_seq(enum uclass_id id, int seq_or_req_seq,
                              bool find_req_seq, struct udevice **devp);
 
+/**
+ * uclass_find_device_by_of_offset() - Find a uclass device by device tree node
+ *
+ * This searches the devices in the uclass for one attached to the given
+ * device tree node.
+ *
+ * The device is NOT probed, it is merely returned.
+ *
+ * @id: ID to look up
+ * @node: Device tree offset to search for (if -ve then -ENODEV is returned)
+ * @devp: Returns pointer to device (there is only one for each node)
+ * @return 0 if OK, -ve on error
+ */
+int uclass_find_device_by_of_offset(enum uclass_id id, int node,
+                                   struct udevice **devp);
+
+/**
+ * uclass_find_device_by_of_node() - Find a uclass device by device tree node
+ *
+ * This searches the devices in the uclass for one attached to the given
+ * device tree node.
+ *
+ * The device is NOT probed, it is merely returned.
+ *
+ * @id: ID to look up
+ * @node: Device tree offset to search for (if NULL then -ENODEV is returned)
+ * @devp: Returns pointer to device (there is only one for each node)
+ * @return 0 if OK, -ve on error
+ */
+int uclass_find_device_by_ofnode(enum uclass_id id, ofnode node,
+                                struct udevice **devp);
+
 /**
  * uclass_bind_device() - Associate device with a uclass
  *
@@ -116,7 +160,7 @@ int uclass_bind_device(struct udevice *dev);
  * @dev:       Pointer to the device
  * #return 0 on success, -ve on error
  */
-#ifdef CONFIG_DM_DEVICE_REMOVE
+#if CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)
 int uclass_unbind_device(struct udevice *dev);
 #else
 static inline int uclass_unbind_device(struct udevice *dev) { return 0; }
@@ -153,7 +197,7 @@ int uclass_post_probe_device(struct udevice *dev);
  * @dev:       Pointer to the device
  * #return 0 on success, -ve on error
  */
-#ifdef CONFIG_DM_DEVICE_REMOVE
+#if CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)
 int uclass_pre_remove_device(struct udevice *dev);
 #else
 static inline int uclass_pre_remove_device(struct udevice *dev) { return 0; }