Merge branch 'u-boot/master' into 'u-boot-arm/master'

1 files changed, 88 insertions, 27 deletions

diff --git a/include/dm/uclass-internal.h b/include/dm/uclass-internal.h
index f2f254a8259..9b685086671 100644
--- a/include/dm/uclass-internal.h
+++ b/include/dm/uclass-internal.h
@@ -11,12 +11,25 @@
 #define _DM_UCLASS_INTERNAL_H
 
 /**
+ * uclass_get_device_tail() - handle the end of a get_device call
+ *
+ * This handles returning an error or probing a device as needed.
+ *
+ * @dev: Device that needs to be probed
+ * @ret: Error to return. If non-zero then the device is not probed
+ * @devp: Returns the value of 'dev' if there is no error
+ * @return ret, if non-zero, else the result of the device_probe() call
+ */
+int uclass_get_device_tail(struct udevice *dev, int ret, struct udevice **devp);
+
+/**
  * uclass_find_device() - Return n-th child of uclass
  * @id:		Id number of the uclass
  * @index:	Position of the child in uclass's list
  * #devp:	Returns pointer to device, or NULL on error
  *
- * The device is not prepared for use - this is an internal function
+ * The device is not prepared for use - this is an internal function.
+ * The function uclass_get_device_tail() can be used to probe the device.
  *
  * @return the uclass pointer of a child at the given index or
  * return NULL on error.
@@ -24,6 +37,68 @@
 int uclass_find_device(enum uclass_id id, int index, struct udevice **devp);
 
 /**
+ * uclass_find_first_device() - Return the first device in a uclass
+ * @id:		Id number of the uclass
+ * #devp:	Returns pointer to device, or NULL on error
+ *
+ * The device is not prepared for use - this is an internal function.
+ * The function uclass_get_device_tail() can be used to probe the device.
+ *
+ * @return 0 if OK (found or not found), -1 on error
+ */
+int uclass_find_first_device(enum uclass_id id, struct udevice **devp);
+
+/**
+ * uclass_find_next_device() - Return the next device in a uclass
+ * @devp: On entry, pointer to device to lookup. On exit, returns pointer
+ * to the next device in the same uclass, or NULL if none
+ *
+ * The device is not prepared for use - this is an internal function.
+ * The function uclass_get_device_tail() can be used to probe the device.
+ *
+ * @return 0 if OK (found or not found), -1 on error
+ */
+int uclass_find_next_device(struct udevice **devp);
+
+/**
+ * uclass_find_device_by_name() - Find uclass device based on ID and name
+ *
+ * This searches for a device with the exactly given name.
+ *
+ * The device is NOT probed, it is merely returned.
+ *
+ * @id: ID to look up
+ * @name: name of a device to find
+ * @devp: Returns pointer to device (the first one with the name)
+ * @return 0 if OK, -ve on error
+ */
+int uclass_find_device_by_name(enum uclass_id id, const char *name,
+			       struct udevice **devp);
+
+/**
+ * uclass_find_device_by_seq() - Find uclass device based on ID and sequence
+ *
+ * This searches for a device with the given seq or req_seq.
+ *
+ * For seq, if an active device has this sequence it will be returned.
+ * If there is no such device then this will return -ENODEV.
+ *
+ * For req_seq, if a device (whether activated or not) has this req_seq
+ * value, that device will be returned. This is a strong indication that
+ * the device will receive that sequence when activated.
+ *
+ * The device is NOT probed, it is merely returned.
+ *
+ * @id: ID to look up
+ * @seq_or_req_seq: Sequence number to find (0=first)
+ * @find_req_seq: true to find req_seq, false to find seq
+ * @devp: Returns pointer to device (there is only one per for each seq)
+ * @return 0 if OK, -ve on error
+ */
+int uclass_find_device_by_seq(enum uclass_id id, int seq_or_req_seq,
+			      bool find_req_seq, struct udevice **devp);
+
+/**
  * uclass_bind_device() - Associate device with a uclass
  *
  * Connect the device into uclass's list of devices.
@@ -41,18 +116,23 @@ int uclass_bind_device(struct udevice *dev);
  * @dev:	Pointer to the device
  * #return 0 on success, -ve on error
  */
+#ifdef CONFIG_DM_DEVICE_REMOVE
 int uclass_unbind_device(struct udevice *dev);
+#else
+static inline int uclass_unbind_device(struct udevice *dev) { return 0; }
+#endif
 
 /**
- * uclass_pre_probe_child() - Deal with a child that is about to be probed
+ * uclass_pre_probe_device() - Deal with a device that is about to be probed
  *
  * Perform any pre-processing that is needed by the uclass before it can be
- * probed.
+ * probed. This includes the uclass' pre-probe() method and the parent
+ * uclass' child_pre_probe() method.
  *
  * @dev:	Pointer to the device
  * #return 0 on success, -ve on error
  */
-int uclass_pre_probe_child(struct udevice *dev);
+int uclass_pre_probe_device(struct udevice *dev);
 
 /**
  * uclass_post_probe_device() - Deal with a device that has just been probed
@@ -73,7 +153,11 @@ 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
 int uclass_pre_remove_device(struct udevice *dev);
+#else
+static inline int uclass_pre_remove_device(struct udevice *dev) { return 0; }
+#endif
 
 /**
  * uclass_find() - Find uclass by its id
@@ -93,27 +177,4 @@ struct uclass *uclass_find(enum uclass_id key);
  */
 int uclass_destroy(struct uclass *uc);
 
-/**
- * uclass_find_device_by_seq() - Find uclass device based on ID and sequence
- *
- * This searches for a device with the given seq or req_seq.
- *
- * For seq, if an active device has this sequence it will be returned.
- * If there is no such device then this will return -ENODEV.
- *
- * For req_seq, if a device (whether activated or not) has this req_seq
- * value, that device will be returned. This is a strong indication that
- * the device will receive that sequence when activated.
- *
- * The device is NOT probed, it is merely returned.
- *
- * @id: ID to look up
- * @seq_or_req_seq: Sequence number to find (0=first)
- * @find_req_seq: true to find req_seq, false to find seq
- * @devp: Returns pointer to device (there is only one per for each seq)
- * @return 0 if OK, -ve on error
- */
-int uclass_find_device_by_seq(enum uclass_id id, int seq_or_req_seq,
-			      bool find_req_seq, struct udevice **devp);
-
 #endif