diff options
Diffstat (limited to 'include/dm/device.h')
| -rw-r--r-- | include/dm/device.h | 39 |
1 files changed, 27 insertions, 12 deletions
diff --git a/include/dm/device.h b/include/dm/device.h index 9812d86f08..847934425b 100644 --- a/include/dm/device.h +++ b/include/dm/device.h @@ -270,7 +270,7 @@ struct driver { * @dev Device to check * @return platform data, or NULL if none */ -void *dev_get_platdata(struct udevice *dev); +void *dev_get_platdata(const struct udevice *dev); /** * dev_get_parent_platdata() - Get the parent platform data for a device @@ -280,7 +280,7 @@ void *dev_get_platdata(struct udevice *dev); * @dev Device to check * @return parent's platform data, or NULL if none */ -void *dev_get_parent_platdata(struct udevice *dev); +void *dev_get_parent_platdata(const struct udevice *dev); /** * dev_get_uclass_platdata() - Get the uclass platform data for a device @@ -290,7 +290,7 @@ void *dev_get_parent_platdata(struct udevice *dev); * @dev Device to check * @return uclass's platform data, or NULL if none */ -void *dev_get_uclass_platdata(struct udevice *dev); +void *dev_get_uclass_platdata(const struct udevice *dev); /** * dev_get_priv() - Get the private data for a device @@ -300,7 +300,7 @@ void *dev_get_uclass_platdata(struct udevice *dev); * @dev Device to check * @return private data, or NULL if none */ -void *dev_get_priv(struct udevice *dev); +void *dev_get_priv(const struct udevice *dev); /** * dev_get_parent_priv() - Get the parent private data for a device @@ -314,7 +314,7 @@ void *dev_get_priv(struct udevice *dev); * @dev Device to check * @return parent data, or NULL if none */ -void *dev_get_parent_priv(struct udevice *dev); +void *dev_get_parent_priv(const struct udevice *dev); /** * dev_get_uclass_priv() - Get the private uclass data for a device @@ -324,7 +324,7 @@ void *dev_get_parent_priv(struct udevice *dev); * @dev Device to check * @return private uclass data for this device, or NULL if none */ -void *dev_get_uclass_priv(struct udevice *dev); +void *dev_get_uclass_priv(const struct udevice *dev); /** * struct dev_get_parent() - Get the parent of a device @@ -332,7 +332,7 @@ void *dev_get_uclass_priv(struct udevice *dev); * @child: Child to check * @return parent of child, or NULL if this is the root device */ -struct udevice *dev_get_parent(struct udevice *child); +struct udevice *dev_get_parent(const struct udevice *child); /** * dev_get_driver_data() - get the driver data used to bind a device @@ -359,7 +359,7 @@ struct udevice *dev_get_parent(struct udevice *child); * @dev: Device to check * @return driver data (0 if none is provided) */ -ulong dev_get_driver_data(struct udevice *dev); +ulong dev_get_driver_data(const struct udevice *dev); /** * dev_get_driver_ops() - get the device's driver's operations @@ -370,7 +370,7 @@ ulong dev_get_driver_data(struct udevice *dev); * @dev: Device to check * @return void pointer to driver's operations or NULL for NULL-dev or NULL-ops */ -const void *dev_get_driver_ops(struct udevice *dev); +const void *dev_get_driver_ops(const struct udevice *dev); /** * device_get_uclass_id() - return the uclass ID of a device @@ -378,7 +378,7 @@ const void *dev_get_driver_ops(struct udevice *dev); * @dev: Device to check * @return uclass ID for the device */ -enum uclass_id device_get_uclass_id(struct udevice *dev); +enum uclass_id device_get_uclass_id(const struct udevice *dev); /** * dev_get_uclass_name() - return the uclass name of a device @@ -388,7 +388,7 @@ enum uclass_id device_get_uclass_id(struct udevice *dev); * @dev: Device to check * @return pointer to the uclass name for the device */ -const char *dev_get_uclass_name(struct udevice *dev); +const char *dev_get_uclass_name(const struct udevice *dev); /** * device_get_child() - Get the child of a device by index @@ -520,12 +520,27 @@ int device_find_first_child(struct udevice *parent, struct udevice **devp); int device_find_next_child(struct udevice **devp); /** + * device_find_first_inactive_child() - Find the first inactive child + * + * This is used to locate an existing child of a device which is of a given + * uclass. + * + * @parent: Parent device to search + * @uclass_id: Uclass to look for + * @devp: Returns device found, if any + * @return 0 if found, else -ENODEV + */ +int device_find_first_inactive_child(struct udevice *parent, + enum uclass_id uclass_id, + struct udevice **devp); + +/** * device_has_children() - check if a device has any children * * @dev: Device to check * @return true if the device has one or more children */ -bool device_has_children(struct udevice *dev); +bool device_has_children(const struct udevice *dev); /** * device_has_active_children() - check if a device has any active children |