mirror of
https://github.com/AsahiLinux/u-boot
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
132 lines
3.8 KiB
C
132 lines
3.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (c) 2013 Google, Inc
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*
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* (C) Copyright 2012
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* Pavel Herrmann <morpheus.ibis@gmail.com>
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*/
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#ifndef _DM_ROOT_H_
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#define _DM_ROOT_H_
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struct udevice;
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/**
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* dm_root() - Return pointer to the top of the driver tree
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*
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* This function returns pointer to the root node of the driver tree,
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*
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* @return pointer to root device, or NULL if not inited yet
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*/
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struct udevice *dm_root(void);
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struct global_data;
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/**
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* dm_fixup_for_gd_move() - Handle global_data moving to a new place
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*
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* The uclass list is part of global_data. Due to the way lists work, moving
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* the list will cause it to become invalid. This function fixes that up so
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* that the uclass list will work correctly.
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*/
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void dm_fixup_for_gd_move(struct global_data *new_gd);
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/**
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* dm_scan_platdata() - Scan all platform data and bind drivers
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*
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* This scans all available platdata and creates drivers for each
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*
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* @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC
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* flag. If false bind all drivers.
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* @return 0 if OK, -ve on error
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*/
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int dm_scan_platdata(bool pre_reloc_only);
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/**
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* dm_scan_fdt() - Scan the device tree and bind drivers
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*
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* This scans the device tree and creates a driver for each node. Only
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* the top-level subnodes are examined.
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*
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* @blob: Pointer to device tree blob
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* @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC
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* flag. If false bind all drivers.
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* @return 0 if OK, -ve on error
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*/
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int dm_scan_fdt(const void *blob, bool pre_reloc_only);
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/**
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* dm_extended_scan_fdt() - Scan the device tree and bind drivers
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*
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* This calls dm_scna_dft() which scans the device tree and creates a driver
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* for each node. the top-level subnodes are examined and also all sub-nodes
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* of "clocks" node.
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*
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* @blob: Pointer to device tree blob
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* @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC
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* flag. If false bind all drivers.
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* @return 0 if OK, -ve on error
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*/
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int dm_extended_scan_fdt(const void *blob, bool pre_reloc_only);
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/**
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* dm_scan_other() - Scan for other devices
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*
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* Some devices may not be visible to Driver Model. This weak function can
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* be provided by boards which wish to create their own devices
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* programmaticaly. They should do this by calling device_bind() on each
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* device.
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*
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* @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC
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* flag. If false bind all drivers.
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*/
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int dm_scan_other(bool pre_reloc_only);
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/**
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* dm_init_and_scan() - Initialise Driver Model structures and scan for devices
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*
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* This function initialises the roots of the driver tree and uclass trees,
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* then scans and binds available devices from platform data and the FDT.
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* This calls dm_init() to set up Driver Model structures.
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*
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* @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC
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* flag. If false bind all drivers.
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* @return 0 if OK, -ve on error
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*/
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int dm_init_and_scan(bool pre_reloc_only);
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/**
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* dm_init() - Initialise Driver Model structures
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*
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* This function will initialize roots of driver tree and class tree.
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* This needs to be called before anything uses the DM
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*
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* @of_live: Enable live device tree
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* @return 0 if OK, -ve on error
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*/
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int dm_init(bool of_live);
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/**
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* dm_uninit - Uninitialise Driver Model structures
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*
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* All devices will be removed and unbound
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* @return 0 if OK, -ve on error
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*/
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int dm_uninit(void);
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#if CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)
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/**
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* dm_remove_devices_flags - Call remove function of all drivers with
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* specific removal flags set to selectively
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* remove drivers
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*
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* All devices with the matching flags set will be removed
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*
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* @flags: Flags for selective device removal
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* @return 0 if OK, -ve on error
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*/
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int dm_remove_devices_flags(uint flags);
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#else
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static inline int dm_remove_devices_flags(uint flags) { return 0; }
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#endif
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#endif
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