2 * Copyright (c) 2013 Google, Inc
7 * SPDX-License-Identifier: GPL-2.0+
16 * dm_root() - Return pointer to the top of the driver tree
18 * This function returns pointer to the root node of the driver tree,
20 * @return pointer to root device, or NULL if not inited yet
22 struct udevice *dm_root(void);
26 * dm_fixup_for_gd_move() - Handle global_data moving to a new place
28 * The uclass list is part of global_data. Due to the way lists work, moving
29 * the list will cause it to become invalid. This function fixes that up so
30 * that the uclass list will work correctly.
32 void dm_fixup_for_gd_move(struct global_data *new_gd);
35 * dm_scan_platdata() - Scan all platform data and bind drivers
37 * This scans all available platdata and creates drivers for each
39 * @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC
40 * flag. If false bind all drivers.
41 * @return 0 if OK, -ve on error
43 int dm_scan_platdata(bool pre_reloc_only);
46 * dm_scan_fdt() - Scan the device tree and bind drivers
48 * This scans the device tree and creates a driver for each node. Only
49 * the top-level subnodes are examined.
51 * @blob: Pointer to device tree blob
52 * @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC
53 * flag. If false bind all drivers.
54 * @return 0 if OK, -ve on error
56 int dm_scan_fdt(const void *blob, bool pre_reloc_only);
59 * dm_scan_fdt_node() - Scan the device tree and bind drivers for a node
61 * This scans the subnodes of a device tree node and and creates a driver
64 * @parent: Parent device for the devices that will be created
65 * @blob: Pointer to device tree blob
66 * @offset: Offset of node to scan
67 * @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC
68 * flag. If false bind all drivers.
69 * @return 0 if OK, -ve on error
71 int dm_scan_fdt_node(struct udevice *parent, const void *blob, int offset,
75 * dm_scan_other() - Scan for other devices
77 * Some devices may not be visible to Driver Model. This weak function can
78 * be provided by boards which wish to create their own devices
79 * programmaticaly. They should do this by calling device_bind() on each
82 * @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC
83 * flag. If false bind all drivers.
85 int dm_scan_other(bool pre_reloc_only);
88 * dm_init_and_scan() - Initialise Driver Model structures and scan for devices
90 * This function initialises the roots of the driver tree and uclass trees,
91 * then scans and binds available devices from platform data and the FDT.
92 * This calls dm_init() to set up Driver Model structures.
94 * @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC
95 * flag. If false bind all drivers.
96 * @return 0 if OK, -ve on error
98 int dm_init_and_scan(bool pre_reloc_only);
101 * dm_init() - Initialise Driver Model structures
103 * This function will initialize roots of driver tree and class tree.
104 * This needs to be called before anything uses the DM
106 * @return 0 if OK, -ve on error
111 * dm_uninit - Uninitialise Driver Model structures
113 * All devices will be removed and unbound
114 * @return 0 if OK, -ve on error