2 * Copyright (c) 2013 Google, Inc
5 * Pavel Herrmann <morpheus.ibis@gmail.com>
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_other() - Scan for other devices
61 * Some devices may not be visible to Driver Model. This weak function can
62 * be provided by boards which wish to create their own devices
63 * programmaticaly. They should do this by calling device_bind() on each
66 * @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC
67 * flag. If false bind all drivers.
69 int dm_scan_other(bool pre_reloc_only);
72 * dm_init_and_scan() - Initialise Driver Model structures and scan for devices
74 * This function initialises the roots of the driver tree and uclass trees,
75 * then scans and binds available devices from platform data and the FDT.
76 * This calls dm_init() to set up Driver Model structures.
78 * @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC
79 * flag. If false bind all drivers.
80 * @return 0 if OK, -ve on error
82 int dm_init_and_scan(bool pre_reloc_only);
85 * dm_init() - Initialise Driver Model structures
87 * This function will initialize roots of driver tree and class tree.
88 * This needs to be called before anything uses the DM
90 * @of_live: Enable live device tree
91 * @return 0 if OK, -ve on error
93 int dm_init(bool of_live);
96 * dm_uninit - Uninitialise Driver Model structures
98 * All devices will be removed and unbound
99 * @return 0 if OK, -ve on error
103 #if CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)
105 * dm_remove_devices_flags - Call remove function of all drivers with
106 * specific removal flags set to selectively
109 * All devices with the matching flags set will be removed
111 * @flags: Flags for selective device removal
112 * @return 0 if OK, -ve on error
114 int dm_remove_devices_flags(uint flags);
116 static inline int dm_remove_devices_flags(uint flags) { return 0; }