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38d21b418d
Add functions to access addresses in the device tree. These are brought in from Linux 4.10. Also fix up the header guard for fdtaddr.h to avoid confusion. Signed-off-by: Simon Glass <sjg@chromium.org>
111 lines
3.0 KiB
C
111 lines
3.0 KiB
C
/*
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* Copyright (c) 2017 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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* Marek Vasut <marex@denx.de>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _DM_FDTADDR_H
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#define _DM_FDTADDR_H
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#include <fdtdec.h>
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struct udevice;
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/**
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* devfdt_get_addr() - Get the reg property of a device
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*
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* @dev: Pointer to a device
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*
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* @return addr
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*/
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fdt_addr_t devfdt_get_addr(struct udevice *dev);
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/**
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* devfdt_get_addr_ptr() - Return pointer to the address of the reg property
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* of a device
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*
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* @dev: Pointer to a device
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*
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* @return Pointer to addr, or NULL if there is no such property
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*/
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void *devfdt_get_addr_ptr(struct udevice *dev);
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/**
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* devfdt_map_physmem() - Read device address from reg property of the
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* device node and map the address into CPU address
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* space.
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*
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* @dev: Pointer to device
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* @size: size of the memory to map
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*
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* @return mapped address, or NULL if the device does not have reg
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* property.
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*/
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void *devfdt_map_physmem(struct udevice *dev, unsigned long size);
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/**
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* devfdt_get_addr_index() - Get the indexed reg property of a device
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*
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* @dev: Pointer to a device
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* @index: the 'reg' property can hold a list of <addr, size> pairs
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* and @index is used to select which one is required
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*
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* @return addr
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*/
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fdt_addr_t devfdt_get_addr_index(struct udevice *dev, int index);
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/**
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* devfdt_get_addr_size_index() - Get the indexed reg property of a device
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*
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* Returns the address and size specified in the 'reg' property of a device.
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*
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* @dev: Pointer to a device
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* @index: the 'reg' property can hold a list of <addr, size> pairs
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* and @index is used to select which one is required
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* @size: Pointer to size varible - this function returns the size
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* specified in the 'reg' property here
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*
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* @return addr
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*/
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fdt_addr_t devfdt_get_addr_size_index(struct udevice *dev, int index,
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fdt_size_t *size);
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/**
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* devfdt_get_addr_name() - Get the reg property of a device, indexed by name
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*
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* @dev: Pointer to a device
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* @name: the 'reg' property can hold a list of <addr, size> pairs, with the
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* 'reg-names' property providing named-based identification. @index
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* indicates the value to search for in 'reg-names'.
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*
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* @return addr
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*/
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fdt_addr_t devfdt_get_addr_name(struct udevice *dev, const char *name);
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/**
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* dm_set_translation_offset() - Set translation offset
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* @offs: Translation offset
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*
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* Some platforms need a special address translation. Those
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* platforms (e.g. mvebu in SPL) can configure a translation
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* offset in the DM by calling this function. It will be
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* added to all addresses returned in devfdt_get_addr().
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*/
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void dm_set_translation_offset(fdt_addr_t offs);
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/**
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* dm_get_translation_offset() - Get translation offset
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*
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* This function returns the translation offset that can
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* be configured by calling dm_set_translation_offset().
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*
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* @return translation offset for the device address (0 as default).
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*/
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fdt_addr_t dm_get_translation_offset(void);
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#endif
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