dm: core: Use const where possible in device.h
Update this header file to use const devices where possible, to permit
callers to also use const.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/dm/device.h b/include/dm/device.h
index 1138a09..611fc2e 100644
--- a/include/dm/device.h
+++ b/include/dm/device.h
@@ -409,7 +409,8 @@
* @return 0 if OK, -ENODEV if no such device, other error if the device fails
* to probe
*/
-int device_get_child(struct udevice *parent, int index, struct udevice **devp);
+int device_get_child(const struct udevice *parent, int index,
+ struct udevice **devp);
/**
* device_get_child_count() - Get the available child count of a device
@@ -418,7 +419,7 @@
*
* @parent: Parent device to check
*/
-int device_get_child_count(struct udevice *parent);
+int device_get_child_count(const struct udevice *parent);
/**
* device_find_child_by_seq() - Find a child device based on a sequence
@@ -439,7 +440,7 @@
* Set to NULL if none is found
* @return 0 if OK, -ve on error
*/
-int device_find_child_by_seq(struct udevice *parent, int seq_or_req_seq,
+int device_find_child_by_seq(const struct udevice *parent, int seq_or_req_seq,
bool find_req_seq, struct udevice **devp);
/**
@@ -457,7 +458,7 @@
* Set to NULL if none is found
* @return 0 if OK, -ve on error
*/
-int device_get_child_by_seq(struct udevice *parent, int seq,
+int device_get_child_by_seq(const struct udevice *parent, int seq,
struct udevice **devp);
/**
@@ -470,7 +471,7 @@
* @devp: Returns pointer to device if found, otherwise this is set to NULL
* @return 0 if OK, -ve on error
*/
-int device_find_child_by_of_offset(struct udevice *parent, int of_offset,
+int device_find_child_by_of_offset(const struct udevice *parent, int of_offset,
struct udevice **devp);
/**
@@ -485,7 +486,7 @@
* @devp: Returns pointer to device if found, otherwise this is set to NULL
* @return 0 if OK, -ve on error
*/
-int device_get_child_by_of_offset(struct udevice *parent, int of_offset,
+int device_get_child_by_of_offset(const struct udevice *parent, int of_offset,
struct udevice **devp);
/**
@@ -524,7 +525,8 @@
* @devp: Returns first child device, or NULL if none
* @return 0
*/
-int device_find_first_child(struct udevice *parent, struct udevice **devp);
+int device_find_first_child(const struct udevice *parent,
+ struct udevice **devp);
/**
* device_find_next_child() - Find the next child of a device
@@ -548,7 +550,7 @@
* @devp: Returns device found, if any
* @return 0 if found, else -ENODEV
*/
-int device_find_first_inactive_child(struct udevice *parent,
+int device_find_first_inactive_child(const struct udevice *parent,
enum uclass_id uclass_id,
struct udevice **devp);
@@ -560,7 +562,7 @@
* @devp: Returns first child device in that uclass, if any
* @return 0 if found, else -ENODEV
*/
-int device_find_first_child_by_uclass(struct udevice *parent,
+int device_find_first_child_by_uclass(const struct udevice *parent,
enum uclass_id uclass_id,
struct udevice **devp);
@@ -572,7 +574,7 @@
* @devp: Returns device found, if any
* @return 0 if found, else -ENODEV
*/
-int device_find_child_by_name(struct udevice *parent, const char *name,
+int device_find_child_by_name(const struct udevice *parent, const char *name,
struct udevice **devp);
/**
@@ -590,7 +592,7 @@
* @return true if the device has one or more children and at least one of
* them is active (probed).
*/
-bool device_has_active_children(struct udevice *dev);
+bool device_has_active_children(const struct udevice *dev);
/**
* device_is_last_sibling() - check if a device is the last sibling
@@ -603,7 +605,7 @@
* @return true if there are no more siblings after this one - i.e. is it
* last in the list.
*/
-bool device_is_last_sibling(struct udevice *dev);
+bool device_is_last_sibling(const struct udevice *dev);
/**
* device_set_name() - set the name of a device
@@ -643,7 +645,7 @@
* device
* @return true if OK, false if the compatible is not found
*/
-bool device_is_compatible(struct udevice *dev, const char *compat);
+bool device_is_compatible(const struct udevice *dev, const char *compat);
/**
* of_machine_is_compatible() - check if the machine is compatible with
@@ -678,7 +680,7 @@
* @dev: device to test
* @return: true if it is on a PCI bus, false otherwise
*/
-static inline bool device_is_on_pci_bus(struct udevice *dev)
+static inline bool device_is_on_pci_bus(const struct udevice *dev)
{
return device_get_uclass_id(dev->parent) == UCLASS_PCI;
}