diff options
Diffstat (limited to 'include/dm/device.h')
| -rw-r--r-- | include/dm/device.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/dm/device.h b/include/dm/device.h index 3f0f711..20207ce 100644 --- a/include/dm/device.h +++ b/include/dm/device.h @@ -51,6 +51,7 @@ struct driver_info; * @priv: Private data for this device * @uclass: Pointer to uclass for this device * @uclass_priv: The uclass's private data for this device + * @parent_priv: The parent's private data for this device * @uclass_node: Used by uclass to link its devices * @child_head: List of children of this device * @sibling_node: Next device in list of all devices @@ -67,6 +68,7 @@ struct udevice { void *priv; struct uclass *uclass; void *uclass_priv; + void *parent_priv; struct list_head uclass_node; struct list_head child_head; struct list_head sibling_node; @@ -124,6 +126,9 @@ struct udevice_id { * This is typically only useful for device-tree-aware drivers (those with * an of_match), since drivers which use platdata will have the data * provided in the U_BOOT_DEVICE() instantiation. + * @per_child_auto_alloc_size: Each device can hold private data owned by + * its parent. If required this will be automatically allocated if this + * value is non-zero. * @ops: Driver-specific operations. This is typically a list of function * pointers defined by the driver, to implement driver functions required by * the uclass. @@ -140,6 +145,7 @@ struct driver { int (*ofdata_to_platdata)(struct udevice *dev); int priv_auto_alloc_size; int platdata_auto_alloc_size; + int per_child_auto_alloc_size; const void *ops; /* driver-specific operations */ uint32_t flags; }; @@ -159,6 +165,20 @@ struct driver { void *dev_get_platdata(struct udevice *dev); /** + * dev_get_parentdata() - Get the parent data for a device + * + * The parent data is data stored in the device but owned by the parent. + * For example, a USB device may have parent data which contains information + * about how to talk to the device over USB. + * + * This checks that dev is not NULL, but no other checks for now + * + * @dev Device to check + * @return parent data, or NULL if none + */ +void *dev_get_parentdata(struct udevice *dev); + +/** * dev_get_priv() - Get the private data for a device * * This checks that dev is not NULL, but no other checks for now |