1708 lines
49 KiB
C
1708 lines
49 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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#ifndef _LINUX_OF_H
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#define _LINUX_OF_H
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/*
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* Definitions for talking to the Open Firmware PROM on
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* Power Macintosh and other computers.
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*
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* Copyright (C) 1996-2005 Paul Mackerras.
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*
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* Updates for PPC64 by Peter Bergner & David Engebretsen, IBM Corp.
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* Updates for SPARC64 by David S. Miller
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* Derived from PowerPC and Sparc prom.h files by Stephen Rothwell, IBM Corp.
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*/
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#include <linux/types.h>
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#include <linux/bitops.h>
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#include <linux/errno.h>
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#include <linux/kobject.h>
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#include <linux/mod_devicetable.h>
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#include <linux/property.h>
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#include <linux/list.h>
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#include <asm/byteorder.h>
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typedef u32 phandle;
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typedef u32 ihandle;
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struct property {
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char *name;
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int length;
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void *value;
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struct property *next;
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#if defined(CONFIG_OF_DYNAMIC) || defined(CONFIG_SPARC)
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unsigned long _flags;
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#endif
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#if defined(CONFIG_OF_PROMTREE)
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unsigned int unique_id;
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#endif
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#if defined(CONFIG_OF_KOBJ)
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struct bin_attribute attr;
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#endif
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};
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#if defined(CONFIG_SPARC)
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struct of_irq_controller;
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#endif
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struct device_node {
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const char *name;
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phandle phandle;
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const char *full_name;
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struct fwnode_handle fwnode;
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struct property *properties;
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struct property *deadprops; /* removed properties */
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struct device_node *parent;
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struct device_node *child;
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struct device_node *sibling;
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#if defined(CONFIG_OF_KOBJ)
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struct kobject kobj;
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#endif
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unsigned long _flags;
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void *data;
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#if defined(CONFIG_SPARC)
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unsigned int unique_id;
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struct of_irq_controller *irq_trans;
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#endif
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};
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#define MAX_PHANDLE_ARGS 16
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struct of_phandle_args {
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struct device_node *np;
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int args_count;
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uint32_t args[MAX_PHANDLE_ARGS];
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};
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struct of_phandle_iterator {
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/* Common iterator information */
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const char *cells_name;
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int cell_count;
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const struct device_node *parent;
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/* List size information */
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const __be32 *list_end;
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const __be32 *phandle_end;
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/* Current position state */
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const __be32 *cur;
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uint32_t cur_count;
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phandle phandle;
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struct device_node *node;
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};
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struct of_reconfig_data {
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struct device_node *dn;
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struct property *prop;
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struct property *old_prop;
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};
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extern const struct kobj_type of_node_ktype;
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extern const struct fwnode_operations of_fwnode_ops;
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/**
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* of_node_init - initialize a devicetree node
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* @node: Pointer to device node that has been created by kzalloc()
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*
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* On return the device_node refcount is set to one. Use of_node_put()
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* on @node when done to free the memory allocated for it. If the node
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* is NOT a dynamic node the memory will not be freed. The decision of
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* whether to free the memory will be done by node->release(), which is
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* of_node_release().
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*/
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static inline void of_node_init(struct device_node *node)
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{
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#if defined(CONFIG_OF_KOBJ)
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kobject_init(&node->kobj, &of_node_ktype);
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#endif
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fwnode_init(&node->fwnode, &of_fwnode_ops);
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}
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#if defined(CONFIG_OF_KOBJ)
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#define of_node_kobj(n) (&(n)->kobj)
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#else
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#define of_node_kobj(n) NULL
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#endif
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#ifdef CONFIG_OF_DYNAMIC
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extern struct device_node *of_node_get(struct device_node *node);
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extern void of_node_put(struct device_node *node);
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#else /* CONFIG_OF_DYNAMIC */
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/* Dummy ref counting routines - to be implemented later */
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static inline struct device_node *of_node_get(struct device_node *node)
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{
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return node;
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}
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static inline void of_node_put(struct device_node *node) { }
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#endif /* !CONFIG_OF_DYNAMIC */
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/* Pointer for first entry in chain of all nodes. */
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extern struct device_node *of_root;
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extern struct device_node *of_chosen;
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extern struct device_node *of_aliases;
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extern struct device_node *of_stdout;
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/*
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* struct device_node flag descriptions
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* (need to be visible even when !CONFIG_OF)
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*/
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#define OF_DYNAMIC 1 /* (and properties) allocated via kmalloc */
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#define OF_DETACHED 2 /* detached from the device tree */
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#define OF_POPULATED 3 /* device already created */
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#define OF_POPULATED_BUS 4 /* platform bus created for children */
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#define OF_OVERLAY 5 /* allocated for an overlay */
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#define OF_OVERLAY_FREE_CSET 6 /* in overlay cset being freed */
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#define OF_BAD_ADDR ((u64)-1)
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#ifdef CONFIG_OF
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void of_core_init(void);
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static inline bool is_of_node(const struct fwnode_handle *fwnode)
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{
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return !IS_ERR_OR_NULL(fwnode) && fwnode->ops == &of_fwnode_ops;
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}
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#define to_of_node(__fwnode) \
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({ \
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typeof(__fwnode) __to_of_node_fwnode = (__fwnode); \
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\
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is_of_node(__to_of_node_fwnode) ? \
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container_of(__to_of_node_fwnode, \
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struct device_node, fwnode) : \
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NULL; \
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})
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#define of_fwnode_handle(node) \
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({ \
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typeof(node) __of_fwnode_handle_node = (node); \
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\
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__of_fwnode_handle_node ? \
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&__of_fwnode_handle_node->fwnode : NULL; \
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})
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static inline bool of_have_populated_dt(void)
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{
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return of_root != NULL;
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}
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static inline bool of_node_is_root(const struct device_node *node)
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{
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return node && (node->parent == NULL);
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}
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static inline int of_node_check_flag(const struct device_node *n, unsigned long flag)
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{
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return test_bit(flag, &n->_flags);
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}
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static inline int of_node_test_and_set_flag(struct device_node *n,
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unsigned long flag)
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{
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return test_and_set_bit(flag, &n->_flags);
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}
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static inline void of_node_set_flag(struct device_node *n, unsigned long flag)
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{
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set_bit(flag, &n->_flags);
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}
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static inline void of_node_clear_flag(struct device_node *n, unsigned long flag)
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{
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clear_bit(flag, &n->_flags);
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}
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#if defined(CONFIG_OF_DYNAMIC) || defined(CONFIG_SPARC)
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static inline int of_property_check_flag(const struct property *p, unsigned long flag)
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{
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return test_bit(flag, &p->_flags);
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}
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static inline void of_property_set_flag(struct property *p, unsigned long flag)
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{
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set_bit(flag, &p->_flags);
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}
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static inline void of_property_clear_flag(struct property *p, unsigned long flag)
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{
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clear_bit(flag, &p->_flags);
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}
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#endif
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extern struct device_node *__of_find_all_nodes(struct device_node *prev);
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extern struct device_node *of_find_all_nodes(struct device_node *prev);
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/*
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* OF address retrieval & translation
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*/
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/* Helper to read a big number; size is in cells (not bytes) */
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static inline u64 of_read_number(const __be32 *cell, int size)
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{
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u64 r = 0;
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for (; size--; cell++)
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r = (r << 32) | be32_to_cpu(*cell);
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return r;
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}
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/* Like of_read_number, but we want an unsigned long result */
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static inline unsigned long of_read_ulong(const __be32 *cell, int size)
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{
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/* toss away upper bits if unsigned long is smaller than u64 */
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return of_read_number(cell, size);
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}
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#if defined(CONFIG_SPARC)
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#include <asm/prom.h>
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#endif
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#define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags)
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#define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags)
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extern bool of_node_name_eq(const struct device_node *np, const char *name);
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extern bool of_node_name_prefix(const struct device_node *np, const char *prefix);
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static inline const char *of_node_full_name(const struct device_node *np)
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{
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return np ? np->full_name : "<no-node>";
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}
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#define for_each_of_allnodes_from(from, dn) \
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for (dn = __of_find_all_nodes(from); dn; dn = __of_find_all_nodes(dn))
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#define for_each_of_allnodes(dn) for_each_of_allnodes_from(NULL, dn)
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extern struct device_node *of_find_node_by_name(struct device_node *from,
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const char *name);
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extern struct device_node *of_find_node_by_type(struct device_node *from,
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const char *type);
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extern struct device_node *of_find_compatible_node(struct device_node *from,
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const char *type, const char *compat);
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extern struct device_node *of_find_matching_node_and_match(
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struct device_node *from,
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const struct of_device_id *matches,
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const struct of_device_id **match);
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extern struct device_node *of_find_node_opts_by_path(const char *path,
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const char **opts);
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static inline struct device_node *of_find_node_by_path(const char *path)
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{
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return of_find_node_opts_by_path(path, NULL);
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}
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extern struct device_node *of_find_node_by_phandle(phandle handle);
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extern struct device_node *of_get_parent(const struct device_node *node);
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extern struct device_node *of_get_next_parent(struct device_node *node);
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extern struct device_node *of_get_next_child(const struct device_node *node,
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struct device_node *prev);
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extern struct device_node *of_get_next_available_child(
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const struct device_node *node, struct device_node *prev);
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extern struct device_node *of_get_compatible_child(const struct device_node *parent,
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const char *compatible);
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extern struct device_node *of_get_child_by_name(const struct device_node *node,
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const char *name);
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/* cache lookup */
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extern struct device_node *of_find_next_cache_node(const struct device_node *);
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extern int of_find_last_cache_level(unsigned int cpu);
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extern struct device_node *of_find_node_with_property(
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struct device_node *from, const char *prop_name);
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extern struct property *of_find_property(const struct device_node *np,
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const char *name,
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int *lenp);
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extern int of_property_count_elems_of_size(const struct device_node *np,
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const char *propname, int elem_size);
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extern int of_property_read_u32_index(const struct device_node *np,
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const char *propname,
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u32 index, u32 *out_value);
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extern int of_property_read_u64_index(const struct device_node *np,
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const char *propname,
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u32 index, u64 *out_value);
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extern int of_property_read_variable_u8_array(const struct device_node *np,
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const char *propname, u8 *out_values,
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size_t sz_min, size_t sz_max);
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extern int of_property_read_variable_u16_array(const struct device_node *np,
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const char *propname, u16 *out_values,
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size_t sz_min, size_t sz_max);
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extern int of_property_read_variable_u32_array(const struct device_node *np,
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const char *propname,
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u32 *out_values,
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size_t sz_min,
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size_t sz_max);
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extern int of_property_read_u64(const struct device_node *np,
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const char *propname, u64 *out_value);
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extern int of_property_read_variable_u64_array(const struct device_node *np,
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const char *propname,
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u64 *out_values,
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size_t sz_min,
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size_t sz_max);
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extern int of_property_read_string(const struct device_node *np,
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const char *propname,
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const char **out_string);
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extern int of_property_match_string(const struct device_node *np,
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const char *propname,
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const char *string);
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extern int of_property_read_string_helper(const struct device_node *np,
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const char *propname,
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const char **out_strs, size_t sz, int index);
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extern int of_device_is_compatible(const struct device_node *device,
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const char *);
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extern int of_device_compatible_match(const struct device_node *device,
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const char *const *compat);
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extern bool of_device_is_available(const struct device_node *device);
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extern bool of_device_is_big_endian(const struct device_node *device);
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extern const void *of_get_property(const struct device_node *node,
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const char *name,
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int *lenp);
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extern struct device_node *of_get_cpu_node(int cpu, unsigned int *thread);
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extern struct device_node *of_cpu_device_node_get(int cpu);
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extern int of_cpu_node_to_id(struct device_node *np);
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extern struct device_node *of_get_next_cpu_node(struct device_node *prev);
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extern struct device_node *of_get_cpu_state_node(struct device_node *cpu_node,
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int index);
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extern u64 of_get_cpu_hwid(struct device_node *cpun, unsigned int thread);
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#define for_each_property_of_node(dn, pp) \
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for (pp = dn->properties; pp != NULL; pp = pp->next)
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extern int of_n_addr_cells(struct device_node *np);
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extern int of_n_size_cells(struct device_node *np);
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extern const struct of_device_id *of_match_node(
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const struct of_device_id *matches, const struct device_node *node);
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extern const void *of_device_get_match_data(const struct device *dev);
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extern int of_alias_from_compatible(const struct device_node *node, char *alias,
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int len);
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extern void of_print_phandle_args(const char *msg, const struct of_phandle_args *args);
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extern int __of_parse_phandle_with_args(const struct device_node *np,
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const char *list_name, const char *cells_name, int cell_count,
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int index, struct of_phandle_args *out_args);
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extern int of_parse_phandle_with_args_map(const struct device_node *np,
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const char *list_name, const char *stem_name, int index,
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struct of_phandle_args *out_args);
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extern int of_count_phandle_with_args(const struct device_node *np,
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const char *list_name, const char *cells_name);
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/* module functions */
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extern ssize_t of_modalias(const struct device_node *np, char *str, ssize_t len);
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extern int of_request_module(const struct device_node *np);
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/* phandle iterator functions */
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extern int of_phandle_iterator_init(struct of_phandle_iterator *it,
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const struct device_node *np,
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const char *list_name,
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const char *cells_name,
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int cell_count);
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extern int of_phandle_iterator_next(struct of_phandle_iterator *it);
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extern int of_phandle_iterator_args(struct of_phandle_iterator *it,
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uint32_t *args,
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int size);
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extern void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align));
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extern int of_alias_get_id(struct device_node *np, const char *stem);
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extern int of_alias_get_highest_id(const char *stem);
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extern int of_machine_is_compatible(const char *compat);
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extern int of_add_property(struct device_node *np, struct property *prop);
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extern int of_remove_property(struct device_node *np, struct property *prop);
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extern int of_update_property(struct device_node *np, struct property *newprop);
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/* For updating the device tree at runtime */
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#define OF_RECONFIG_ATTACH_NODE 0x0001
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#define OF_RECONFIG_DETACH_NODE 0x0002
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#define OF_RECONFIG_ADD_PROPERTY 0x0003
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#define OF_RECONFIG_REMOVE_PROPERTY 0x0004
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#define OF_RECONFIG_UPDATE_PROPERTY 0x0005
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extern int of_attach_node(struct device_node *);
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extern int of_detach_node(struct device_node *);
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#define of_match_ptr(_ptr) (_ptr)
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/*
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* struct property *prop;
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* const __be32 *p;
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* u32 u;
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*
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* of_property_for_each_u32(np, "propname", prop, p, u)
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* printk("U32 value: %x\n", u);
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*/
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const __be32 *of_prop_next_u32(struct property *prop, const __be32 *cur,
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u32 *pu);
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/*
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* struct property *prop;
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* const char *s;
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*
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* of_property_for_each_string(np, "propname", prop, s)
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* printk("String value: %s\n", s);
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*/
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const char *of_prop_next_string(struct property *prop, const char *cur);
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bool of_console_check(struct device_node *dn, char *name, int index);
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int of_map_id(struct device_node *np, u32 id,
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const char *map_name, const char *map_mask_name,
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struct device_node **target, u32 *id_out);
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phys_addr_t of_dma_get_max_cpu_address(struct device_node *np);
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struct kimage;
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void *of_kexec_alloc_and_setup_fdt(const struct kimage *image,
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unsigned long initrd_load_addr,
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unsigned long initrd_len,
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const char *cmdline, size_t extra_fdt_size);
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#else /* CONFIG_OF */
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static inline void of_core_init(void)
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{
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}
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static inline bool is_of_node(const struct fwnode_handle *fwnode)
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{
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return false;
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}
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static inline struct device_node *to_of_node(const struct fwnode_handle *fwnode)
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{
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return NULL;
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}
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static inline bool of_node_name_eq(const struct device_node *np, const char *name)
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{
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return false;
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}
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|
|
static inline bool of_node_name_prefix(const struct device_node *np, const char *prefix)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline const char* of_node_full_name(const struct device_node *np)
|
|
{
|
|
return "<no-node>";
|
|
}
|
|
|
|
static inline struct device_node *of_find_node_by_name(struct device_node *from,
|
|
const char *name)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct device_node *of_find_node_by_type(struct device_node *from,
|
|
const char *type)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct device_node *of_find_matching_node_and_match(
|
|
struct device_node *from,
|
|
const struct of_device_id *matches,
|
|
const struct of_device_id **match)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct device_node *of_find_node_by_path(const char *path)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct device_node *of_find_node_opts_by_path(const char *path,
|
|
const char **opts)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct device_node *of_find_node_by_phandle(phandle handle)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct device_node *of_get_parent(const struct device_node *node)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct device_node *of_get_next_parent(struct device_node *node)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct device_node *of_get_next_child(
|
|
const struct device_node *node, struct device_node *prev)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct device_node *of_get_next_available_child(
|
|
const struct device_node *node, struct device_node *prev)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct device_node *of_find_node_with_property(
|
|
struct device_node *from, const char *prop_name)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
#define of_fwnode_handle(node) NULL
|
|
|
|
static inline bool of_have_populated_dt(void)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline struct device_node *of_get_compatible_child(const struct device_node *parent,
|
|
const char *compatible)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct device_node *of_get_child_by_name(
|
|
const struct device_node *node,
|
|
const char *name)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline int of_device_is_compatible(const struct device_node *device,
|
|
const char *name)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int of_device_compatible_match(const struct device_node *device,
|
|
const char *const *compat)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline bool of_device_is_available(const struct device_node *device)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline bool of_device_is_big_endian(const struct device_node *device)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline struct property *of_find_property(const struct device_node *np,
|
|
const char *name,
|
|
int *lenp)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct device_node *of_find_compatible_node(
|
|
struct device_node *from,
|
|
const char *type,
|
|
const char *compat)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline int of_property_count_elems_of_size(const struct device_node *np,
|
|
const char *propname, int elem_size)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static inline int of_property_read_u32_index(const struct device_node *np,
|
|
const char *propname, u32 index, u32 *out_value)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static inline int of_property_read_u64_index(const struct device_node *np,
|
|
const char *propname, u32 index, u64 *out_value)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static inline const void *of_get_property(const struct device_node *node,
|
|
const char *name,
|
|
int *lenp)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct device_node *of_get_cpu_node(int cpu,
|
|
unsigned int *thread)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct device_node *of_cpu_device_node_get(int cpu)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline int of_cpu_node_to_id(struct device_node *np)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static inline struct device_node *of_get_next_cpu_node(struct device_node *prev)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct device_node *of_get_cpu_state_node(struct device_node *cpu_node,
|
|
int index)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline int of_n_addr_cells(struct device_node *np)
|
|
{
|
|
return 0;
|
|
|
|
}
|
|
static inline int of_n_size_cells(struct device_node *np)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int of_property_read_variable_u8_array(const struct device_node *np,
|
|
const char *propname, u8 *out_values,
|
|
size_t sz_min, size_t sz_max)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static inline int of_property_read_variable_u16_array(const struct device_node *np,
|
|
const char *propname, u16 *out_values,
|
|
size_t sz_min, size_t sz_max)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static inline int of_property_read_variable_u32_array(const struct device_node *np,
|
|
const char *propname,
|
|
u32 *out_values,
|
|
size_t sz_min,
|
|
size_t sz_max)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static inline int of_property_read_u64(const struct device_node *np,
|
|
const char *propname, u64 *out_value)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static inline int of_property_read_variable_u64_array(const struct device_node *np,
|
|
const char *propname,
|
|
u64 *out_values,
|
|
size_t sz_min,
|
|
size_t sz_max)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static inline int of_property_read_string(const struct device_node *np,
|
|
const char *propname,
|
|
const char **out_string)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static inline int of_property_match_string(const struct device_node *np,
|
|
const char *propname,
|
|
const char *string)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static inline int of_property_read_string_helper(const struct device_node *np,
|
|
const char *propname,
|
|
const char **out_strs, size_t sz, int index)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static inline int __of_parse_phandle_with_args(const struct device_node *np,
|
|
const char *list_name,
|
|
const char *cells_name,
|
|
int cell_count,
|
|
int index,
|
|
struct of_phandle_args *out_args)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static inline int of_parse_phandle_with_args_map(const struct device_node *np,
|
|
const char *list_name,
|
|
const char *stem_name,
|
|
int index,
|
|
struct of_phandle_args *out_args)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static inline int of_count_phandle_with_args(const struct device_node *np,
|
|
const char *list_name,
|
|
const char *cells_name)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static inline ssize_t of_modalias(const struct device_node *np, char *str,
|
|
ssize_t len)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static inline int of_request_module(const struct device_node *np)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static inline int of_phandle_iterator_init(struct of_phandle_iterator *it,
|
|
const struct device_node *np,
|
|
const char *list_name,
|
|
const char *cells_name,
|
|
int cell_count)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static inline int of_phandle_iterator_next(struct of_phandle_iterator *it)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static inline int of_phandle_iterator_args(struct of_phandle_iterator *it,
|
|
uint32_t *args,
|
|
int size)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int of_alias_get_id(struct device_node *np, const char *stem)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static inline int of_alias_get_highest_id(const char *stem)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static inline int of_machine_is_compatible(const char *compat)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int of_add_property(struct device_node *np, struct property *prop)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int of_remove_property(struct device_node *np, struct property *prop)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline bool of_console_check(const struct device_node *dn, const char *name, int index)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline const __be32 *of_prop_next_u32(struct property *prop,
|
|
const __be32 *cur, u32 *pu)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline const char *of_prop_next_string(struct property *prop,
|
|
const char *cur)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline int of_node_check_flag(struct device_node *n, unsigned long flag)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int of_node_test_and_set_flag(struct device_node *n,
|
|
unsigned long flag)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void of_node_set_flag(struct device_node *n, unsigned long flag)
|
|
{
|
|
}
|
|
|
|
static inline void of_node_clear_flag(struct device_node *n, unsigned long flag)
|
|
{
|
|
}
|
|
|
|
static inline int of_property_check_flag(const struct property *p,
|
|
unsigned long flag)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void of_property_set_flag(struct property *p, unsigned long flag)
|
|
{
|
|
}
|
|
|
|
static inline void of_property_clear_flag(struct property *p, unsigned long flag)
|
|
{
|
|
}
|
|
|
|
static inline int of_map_id(struct device_node *np, u32 id,
|
|
const char *map_name, const char *map_mask_name,
|
|
struct device_node **target, u32 *id_out)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline phys_addr_t of_dma_get_max_cpu_address(struct device_node *np)
|
|
{
|
|
return PHYS_ADDR_MAX;
|
|
}
|
|
|
|
static inline const void *of_device_get_match_data(const struct device *dev)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
#define of_match_ptr(_ptr) NULL
|
|
#define of_match_node(_matches, _node) NULL
|
|
#endif /* CONFIG_OF */
|
|
|
|
/* Default string compare functions, Allow arch asm/prom.h to override */
|
|
#if !defined(of_compat_cmp)
|
|
#define of_compat_cmp(s1, s2, l) strcasecmp((s1), (s2))
|
|
#define of_prop_cmp(s1, s2) strcmp((s1), (s2))
|
|
#define of_node_cmp(s1, s2) strcasecmp((s1), (s2))
|
|
#endif
|
|
|
|
static inline int of_prop_val_eq(struct property *p1, struct property *p2)
|
|
{
|
|
return p1->length == p2->length &&
|
|
!memcmp(p1->value, p2->value, (size_t)p1->length);
|
|
}
|
|
|
|
#if defined(CONFIG_OF) && defined(CONFIG_NUMA)
|
|
extern int of_node_to_nid(struct device_node *np);
|
|
#else
|
|
static inline int of_node_to_nid(struct device_node *device)
|
|
{
|
|
return NUMA_NO_NODE;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_OF_NUMA
|
|
extern int of_numa_init(void);
|
|
#else
|
|
static inline int of_numa_init(void)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
#endif
|
|
|
|
static inline struct device_node *of_find_matching_node(
|
|
struct device_node *from,
|
|
const struct of_device_id *matches)
|
|
{
|
|
return of_find_matching_node_and_match(from, matches, NULL);
|
|
}
|
|
|
|
static inline const char *of_node_get_device_type(const struct device_node *np)
|
|
{
|
|
return of_get_property(np, "device_type", NULL);
|
|
}
|
|
|
|
static inline bool of_node_is_type(const struct device_node *np, const char *type)
|
|
{
|
|
const char *match = of_node_get_device_type(np);
|
|
|
|
return np && match && type && !strcmp(match, type);
|
|
}
|
|
|
|
/**
|
|
* of_parse_phandle - Resolve a phandle property to a device_node pointer
|
|
* @np: Pointer to device node holding phandle property
|
|
* @phandle_name: Name of property holding a phandle value
|
|
* @index: For properties holding a table of phandles, this is the index into
|
|
* the table
|
|
*
|
|
* Return: The device_node pointer with refcount incremented. Use
|
|
* of_node_put() on it when done.
|
|
*/
|
|
static inline struct device_node *of_parse_phandle(const struct device_node *np,
|
|
const char *phandle_name,
|
|
int index)
|
|
{
|
|
struct of_phandle_args args;
|
|
|
|
if (__of_parse_phandle_with_args(np, phandle_name, NULL, 0,
|
|
index, &args))
|
|
return NULL;
|
|
|
|
return args.np;
|
|
}
|
|
|
|
/**
|
|
* of_parse_phandle_with_args() - Find a node pointed by phandle in a list
|
|
* @np: pointer to a device tree node containing a list
|
|
* @list_name: property name that contains a list
|
|
* @cells_name: property name that specifies phandles' arguments count
|
|
* @index: index of a phandle to parse out
|
|
* @out_args: optional pointer to output arguments structure (will be filled)
|
|
*
|
|
* This function is useful to parse lists of phandles and their arguments.
|
|
* Returns 0 on success and fills out_args, on error returns appropriate
|
|
* errno value.
|
|
*
|
|
* Caller is responsible to call of_node_put() on the returned out_args->np
|
|
* pointer.
|
|
*
|
|
* Example::
|
|
*
|
|
* phandle1: node1 {
|
|
* #list-cells = <2>;
|
|
* };
|
|
*
|
|
* phandle2: node2 {
|
|
* #list-cells = <1>;
|
|
* };
|
|
*
|
|
* node3 {
|
|
* list = <&phandle1 1 2 &phandle2 3>;
|
|
* };
|
|
*
|
|
* To get a device_node of the ``node2`` node you may call this:
|
|
* of_parse_phandle_with_args(node3, "list", "#list-cells", 1, &args);
|
|
*/
|
|
static inline int of_parse_phandle_with_args(const struct device_node *np,
|
|
const char *list_name,
|
|
const char *cells_name,
|
|
int index,
|
|
struct of_phandle_args *out_args)
|
|
{
|
|
int cell_count = -1;
|
|
|
|
/* If cells_name is NULL we assume a cell count of 0 */
|
|
if (!cells_name)
|
|
cell_count = 0;
|
|
|
|
return __of_parse_phandle_with_args(np, list_name, cells_name,
|
|
cell_count, index, out_args);
|
|
}
|
|
|
|
/**
|
|
* of_parse_phandle_with_fixed_args() - Find a node pointed by phandle in a list
|
|
* @np: pointer to a device tree node containing a list
|
|
* @list_name: property name that contains a list
|
|
* @cell_count: number of argument cells following the phandle
|
|
* @index: index of a phandle to parse out
|
|
* @out_args: optional pointer to output arguments structure (will be filled)
|
|
*
|
|
* This function is useful to parse lists of phandles and their arguments.
|
|
* Returns 0 on success and fills out_args, on error returns appropriate
|
|
* errno value.
|
|
*
|
|
* Caller is responsible to call of_node_put() on the returned out_args->np
|
|
* pointer.
|
|
*
|
|
* Example::
|
|
*
|
|
* phandle1: node1 {
|
|
* };
|
|
*
|
|
* phandle2: node2 {
|
|
* };
|
|
*
|
|
* node3 {
|
|
* list = <&phandle1 0 2 &phandle2 2 3>;
|
|
* };
|
|
*
|
|
* To get a device_node of the ``node2`` node you may call this:
|
|
* of_parse_phandle_with_fixed_args(node3, "list", 2, 1, &args);
|
|
*/
|
|
static inline int of_parse_phandle_with_fixed_args(const struct device_node *np,
|
|
const char *list_name,
|
|
int cell_count,
|
|
int index,
|
|
struct of_phandle_args *out_args)
|
|
{
|
|
return __of_parse_phandle_with_args(np, list_name, NULL, cell_count,
|
|
index, out_args);
|
|
}
|
|
|
|
/**
|
|
* of_parse_phandle_with_optional_args() - Find a node pointed by phandle in a list
|
|
* @np: pointer to a device tree node containing a list
|
|
* @list_name: property name that contains a list
|
|
* @cells_name: property name that specifies phandles' arguments count
|
|
* @index: index of a phandle to parse out
|
|
* @out_args: optional pointer to output arguments structure (will be filled)
|
|
*
|
|
* Same as of_parse_phandle_with_args() except that if the cells_name property
|
|
* is not found, cell_count of 0 is assumed.
|
|
*
|
|
* This is used to useful, if you have a phandle which didn't have arguments
|
|
* before and thus doesn't have a '#*-cells' property but is now migrated to
|
|
* having arguments while retaining backwards compatibility.
|
|
*/
|
|
static inline int of_parse_phandle_with_optional_args(const struct device_node *np,
|
|
const char *list_name,
|
|
const char *cells_name,
|
|
int index,
|
|
struct of_phandle_args *out_args)
|
|
{
|
|
return __of_parse_phandle_with_args(np, list_name, cells_name,
|
|
0, index, out_args);
|
|
}
|
|
|
|
/**
|
|
* of_property_count_u8_elems - Count the number of u8 elements in a property
|
|
*
|
|
* @np: device node from which the property value is to be read.
|
|
* @propname: name of the property to be searched.
|
|
*
|
|
* Search for a property in a device node and count the number of u8 elements
|
|
* in it.
|
|
*
|
|
* Return: The number of elements on sucess, -EINVAL if the property does
|
|
* not exist or its length does not match a multiple of u8 and -ENODATA if the
|
|
* property does not have a value.
|
|
*/
|
|
static inline int of_property_count_u8_elems(const struct device_node *np,
|
|
const char *propname)
|
|
{
|
|
return of_property_count_elems_of_size(np, propname, sizeof(u8));
|
|
}
|
|
|
|
/**
|
|
* of_property_count_u16_elems - Count the number of u16 elements in a property
|
|
*
|
|
* @np: device node from which the property value is to be read.
|
|
* @propname: name of the property to be searched.
|
|
*
|
|
* Search for a property in a device node and count the number of u16 elements
|
|
* in it.
|
|
*
|
|
* Return: The number of elements on sucess, -EINVAL if the property does
|
|
* not exist or its length does not match a multiple of u16 and -ENODATA if the
|
|
* property does not have a value.
|
|
*/
|
|
static inline int of_property_count_u16_elems(const struct device_node *np,
|
|
const char *propname)
|
|
{
|
|
return of_property_count_elems_of_size(np, propname, sizeof(u16));
|
|
}
|
|
|
|
/**
|
|
* of_property_count_u32_elems - Count the number of u32 elements in a property
|
|
*
|
|
* @np: device node from which the property value is to be read.
|
|
* @propname: name of the property to be searched.
|
|
*
|
|
* Search for a property in a device node and count the number of u32 elements
|
|
* in it.
|
|
*
|
|
* Return: The number of elements on sucess, -EINVAL if the property does
|
|
* not exist or its length does not match a multiple of u32 and -ENODATA if the
|
|
* property does not have a value.
|
|
*/
|
|
static inline int of_property_count_u32_elems(const struct device_node *np,
|
|
const char *propname)
|
|
{
|
|
return of_property_count_elems_of_size(np, propname, sizeof(u32));
|
|
}
|
|
|
|
/**
|
|
* of_property_count_u64_elems - Count the number of u64 elements in a property
|
|
*
|
|
* @np: device node from which the property value is to be read.
|
|
* @propname: name of the property to be searched.
|
|
*
|
|
* Search for a property in a device node and count the number of u64 elements
|
|
* in it.
|
|
*
|
|
* Return: The number of elements on sucess, -EINVAL if the property does
|
|
* not exist or its length does not match a multiple of u64 and -ENODATA if the
|
|
* property does not have a value.
|
|
*/
|
|
static inline int of_property_count_u64_elems(const struct device_node *np,
|
|
const char *propname)
|
|
{
|
|
return of_property_count_elems_of_size(np, propname, sizeof(u64));
|
|
}
|
|
|
|
/**
|
|
* of_property_read_string_array() - Read an array of strings from a multiple
|
|
* strings property.
|
|
* @np: device node from which the property value is to be read.
|
|
* @propname: name of the property to be searched.
|
|
* @out_strs: output array of string pointers.
|
|
* @sz: number of array elements to read.
|
|
*
|
|
* Search for a property in a device tree node and retrieve a list of
|
|
* terminated string values (pointer to data, not a copy) in that property.
|
|
*
|
|
* Return: If @out_strs is NULL, the number of strings in the property is returned.
|
|
*/
|
|
static inline int of_property_read_string_array(const struct device_node *np,
|
|
const char *propname, const char **out_strs,
|
|
size_t sz)
|
|
{
|
|
return of_property_read_string_helper(np, propname, out_strs, sz, 0);
|
|
}
|
|
|
|
/**
|
|
* of_property_count_strings() - Find and return the number of strings from a
|
|
* multiple strings property.
|
|
* @np: device node from which the property value is to be read.
|
|
* @propname: name of the property to be searched.
|
|
*
|
|
* Search for a property in a device tree node and retrieve the number of null
|
|
* terminated string contain in it.
|
|
*
|
|
* Return: The number of strings on success, -EINVAL if the property does not
|
|
* exist, -ENODATA if property does not have a value, and -EILSEQ if the string
|
|
* is not null-terminated within the length of the property data.
|
|
*/
|
|
static inline int of_property_count_strings(const struct device_node *np,
|
|
const char *propname)
|
|
{
|
|
return of_property_read_string_helper(np, propname, NULL, 0, 0);
|
|
}
|
|
|
|
/**
|
|
* of_property_read_string_index() - Find and read a string from a multiple
|
|
* strings property.
|
|
* @np: device node from which the property value is to be read.
|
|
* @propname: name of the property to be searched.
|
|
* @index: index of the string in the list of strings
|
|
* @output: pointer to null terminated return string, modified only if
|
|
* return value is 0.
|
|
*
|
|
* Search for a property in a device tree node and retrieve a null
|
|
* terminated string value (pointer to data, not a copy) in the list of strings
|
|
* contained in that property.
|
|
*
|
|
* Return: 0 on success, -EINVAL if the property does not exist, -ENODATA if
|
|
* property does not have a value, and -EILSEQ if the string is not
|
|
* null-terminated within the length of the property data.
|
|
*
|
|
* The out_string pointer is modified only if a valid string can be decoded.
|
|
*/
|
|
static inline int of_property_read_string_index(const struct device_node *np,
|
|
const char *propname,
|
|
int index, const char **output)
|
|
{
|
|
int rc = of_property_read_string_helper(np, propname, output, 1, index);
|
|
return rc < 0 ? rc : 0;
|
|
}
|
|
|
|
/**
|
|
* of_property_read_bool - Find a property
|
|
* @np: device node from which the property value is to be read.
|
|
* @propname: name of the property to be searched.
|
|
*
|
|
* Search for a boolean property in a device node. Usage on non-boolean
|
|
* property types is deprecated.
|
|
*
|
|
* Return: true if the property exists false otherwise.
|
|
*/
|
|
static inline bool of_property_read_bool(const struct device_node *np,
|
|
const char *propname)
|
|
{
|
|
struct property *prop = of_find_property(np, propname, NULL);
|
|
|
|
return prop ? true : false;
|
|
}
|
|
|
|
/**
|
|
* of_property_present - Test if a property is present in a node
|
|
* @np: device node to search for the property.
|
|
* @propname: name of the property to be searched.
|
|
*
|
|
* Test for a property present in a device node.
|
|
*
|
|
* Return: true if the property exists false otherwise.
|
|
*/
|
|
static inline bool of_property_present(const struct device_node *np, const char *propname)
|
|
{
|
|
return of_property_read_bool(np, propname);
|
|
}
|
|
|
|
/**
|
|
* of_property_read_u8_array - Find and read an array of u8 from a property.
|
|
*
|
|
* @np: device node from which the property value is to be read.
|
|
* @propname: name of the property to be searched.
|
|
* @out_values: pointer to return value, modified only if return value is 0.
|
|
* @sz: number of array elements to read
|
|
*
|
|
* Search for a property in a device node and read 8-bit value(s) from
|
|
* it.
|
|
*
|
|
* dts entry of array should be like:
|
|
* ``property = /bits/ 8 <0x50 0x60 0x70>;``
|
|
*
|
|
* Return: 0 on success, -EINVAL if the property does not exist,
|
|
* -ENODATA if property does not have a value, and -EOVERFLOW if the
|
|
* property data isn't large enough.
|
|
*
|
|
* The out_values is modified only if a valid u8 value can be decoded.
|
|
*/
|
|
static inline int of_property_read_u8_array(const struct device_node *np,
|
|
const char *propname,
|
|
u8 *out_values, size_t sz)
|
|
{
|
|
int ret = of_property_read_variable_u8_array(np, propname, out_values,
|
|
sz, 0);
|
|
if (ret >= 0)
|
|
return 0;
|
|
else
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* of_property_read_u16_array - Find and read an array of u16 from a property.
|
|
*
|
|
* @np: device node from which the property value is to be read.
|
|
* @propname: name of the property to be searched.
|
|
* @out_values: pointer to return value, modified only if return value is 0.
|
|
* @sz: number of array elements to read
|
|
*
|
|
* Search for a property in a device node and read 16-bit value(s) from
|
|
* it.
|
|
*
|
|
* dts entry of array should be like:
|
|
* ``property = /bits/ 16 <0x5000 0x6000 0x7000>;``
|
|
*
|
|
* Return: 0 on success, -EINVAL if the property does not exist,
|
|
* -ENODATA if property does not have a value, and -EOVERFLOW if the
|
|
* property data isn't large enough.
|
|
*
|
|
* The out_values is modified only if a valid u16 value can be decoded.
|
|
*/
|
|
static inline int of_property_read_u16_array(const struct device_node *np,
|
|
const char *propname,
|
|
u16 *out_values, size_t sz)
|
|
{
|
|
int ret = of_property_read_variable_u16_array(np, propname, out_values,
|
|
sz, 0);
|
|
if (ret >= 0)
|
|
return 0;
|
|
else
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* of_property_read_u32_array - Find and read an array of 32 bit integers
|
|
* from a property.
|
|
*
|
|
* @np: device node from which the property value is to be read.
|
|
* @propname: name of the property to be searched.
|
|
* @out_values: pointer to return value, modified only if return value is 0.
|
|
* @sz: number of array elements to read
|
|
*
|
|
* Search for a property in a device node and read 32-bit value(s) from
|
|
* it.
|
|
*
|
|
* Return: 0 on success, -EINVAL if the property does not exist,
|
|
* -ENODATA if property does not have a value, and -EOVERFLOW if the
|
|
* property data isn't large enough.
|
|
*
|
|
* The out_values is modified only if a valid u32 value can be decoded.
|
|
*/
|
|
static inline int of_property_read_u32_array(const struct device_node *np,
|
|
const char *propname,
|
|
u32 *out_values, size_t sz)
|
|
{
|
|
int ret = of_property_read_variable_u32_array(np, propname, out_values,
|
|
sz, 0);
|
|
if (ret >= 0)
|
|
return 0;
|
|
else
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* of_property_read_u64_array - Find and read an array of 64 bit integers
|
|
* from a property.
|
|
*
|
|
* @np: device node from which the property value is to be read.
|
|
* @propname: name of the property to be searched.
|
|
* @out_values: pointer to return value, modified only if return value is 0.
|
|
* @sz: number of array elements to read
|
|
*
|
|
* Search for a property in a device node and read 64-bit value(s) from
|
|
* it.
|
|
*
|
|
* Return: 0 on success, -EINVAL if the property does not exist,
|
|
* -ENODATA if property does not have a value, and -EOVERFLOW if the
|
|
* property data isn't large enough.
|
|
*
|
|
* The out_values is modified only if a valid u64 value can be decoded.
|
|
*/
|
|
static inline int of_property_read_u64_array(const struct device_node *np,
|
|
const char *propname,
|
|
u64 *out_values, size_t sz)
|
|
{
|
|
int ret = of_property_read_variable_u64_array(np, propname, out_values,
|
|
sz, 0);
|
|
if (ret >= 0)
|
|
return 0;
|
|
else
|
|
return ret;
|
|
}
|
|
|
|
static inline int of_property_read_u8(const struct device_node *np,
|
|
const char *propname,
|
|
u8 *out_value)
|
|
{
|
|
return of_property_read_u8_array(np, propname, out_value, 1);
|
|
}
|
|
|
|
static inline int of_property_read_u16(const struct device_node *np,
|
|
const char *propname,
|
|
u16 *out_value)
|
|
{
|
|
return of_property_read_u16_array(np, propname, out_value, 1);
|
|
}
|
|
|
|
static inline int of_property_read_u32(const struct device_node *np,
|
|
const char *propname,
|
|
u32 *out_value)
|
|
{
|
|
return of_property_read_u32_array(np, propname, out_value, 1);
|
|
}
|
|
|
|
static inline int of_property_read_s32(const struct device_node *np,
|
|
const char *propname,
|
|
s32 *out_value)
|
|
{
|
|
return of_property_read_u32(np, propname, (u32*) out_value);
|
|
}
|
|
|
|
#define of_for_each_phandle(it, err, np, ln, cn, cc) \
|
|
for (of_phandle_iterator_init((it), (np), (ln), (cn), (cc)), \
|
|
err = of_phandle_iterator_next(it); \
|
|
err == 0; \
|
|
err = of_phandle_iterator_next(it))
|
|
|
|
#define of_property_for_each_u32(np, propname, prop, p, u) \
|
|
for (prop = of_find_property(np, propname, NULL), \
|
|
p = of_prop_next_u32(prop, NULL, &u); \
|
|
p; \
|
|
p = of_prop_next_u32(prop, p, &u))
|
|
|
|
#define of_property_for_each_string(np, propname, prop, s) \
|
|
for (prop = of_find_property(np, propname, NULL), \
|
|
s = of_prop_next_string(prop, NULL); \
|
|
s; \
|
|
s = of_prop_next_string(prop, s))
|
|
|
|
#define for_each_node_by_name(dn, name) \
|
|
for (dn = of_find_node_by_name(NULL, name); dn; \
|
|
dn = of_find_node_by_name(dn, name))
|
|
#define for_each_node_by_type(dn, type) \
|
|
for (dn = of_find_node_by_type(NULL, type); dn; \
|
|
dn = of_find_node_by_type(dn, type))
|
|
#define for_each_compatible_node(dn, type, compatible) \
|
|
for (dn = of_find_compatible_node(NULL, type, compatible); dn; \
|
|
dn = of_find_compatible_node(dn, type, compatible))
|
|
#define for_each_matching_node(dn, matches) \
|
|
for (dn = of_find_matching_node(NULL, matches); dn; \
|
|
dn = of_find_matching_node(dn, matches))
|
|
#define for_each_matching_node_and_match(dn, matches, match) \
|
|
for (dn = of_find_matching_node_and_match(NULL, matches, match); \
|
|
dn; dn = of_find_matching_node_and_match(dn, matches, match))
|
|
|
|
#define for_each_child_of_node(parent, child) \
|
|
for (child = of_get_next_child(parent, NULL); child != NULL; \
|
|
child = of_get_next_child(parent, child))
|
|
#define for_each_available_child_of_node(parent, child) \
|
|
for (child = of_get_next_available_child(parent, NULL); child != NULL; \
|
|
child = of_get_next_available_child(parent, child))
|
|
|
|
#define for_each_of_cpu_node(cpu) \
|
|
for (cpu = of_get_next_cpu_node(NULL); cpu != NULL; \
|
|
cpu = of_get_next_cpu_node(cpu))
|
|
|
|
#define for_each_node_with_property(dn, prop_name) \
|
|
for (dn = of_find_node_with_property(NULL, prop_name); dn; \
|
|
dn = of_find_node_with_property(dn, prop_name))
|
|
|
|
static inline int of_get_child_count(const struct device_node *np)
|
|
{
|
|
struct device_node *child;
|
|
int num = 0;
|
|
|
|
for_each_child_of_node(np, child)
|
|
num++;
|
|
|
|
return num;
|
|
}
|
|
|
|
static inline int of_get_available_child_count(const struct device_node *np)
|
|
{
|
|
struct device_node *child;
|
|
int num = 0;
|
|
|
|
for_each_available_child_of_node(np, child)
|
|
num++;
|
|
|
|
return num;
|
|
}
|
|
|
|
#define _OF_DECLARE_STUB(table, name, compat, fn, fn_type) \
|
|
static const struct of_device_id __of_table_##name \
|
|
__attribute__((unused)) \
|
|
= { .compatible = compat, \
|
|
.data = (fn == (fn_type)NULL) ? fn : fn }
|
|
|
|
#if defined(CONFIG_OF) && !defined(MODULE)
|
|
#define _OF_DECLARE(table, name, compat, fn, fn_type) \
|
|
static const struct of_device_id __of_table_##name \
|
|
__used __section("__" #table "_of_table") \
|
|
__aligned(__alignof__(struct of_device_id)) \
|
|
= { .compatible = compat, \
|
|
.data = (fn == (fn_type)NULL) ? fn : fn }
|
|
#else
|
|
#define _OF_DECLARE(table, name, compat, fn, fn_type) \
|
|
_OF_DECLARE_STUB(table, name, compat, fn, fn_type)
|
|
#endif
|
|
|
|
typedef int (*of_init_fn_2)(struct device_node *, struct device_node *);
|
|
typedef int (*of_init_fn_1_ret)(struct device_node *);
|
|
typedef void (*of_init_fn_1)(struct device_node *);
|
|
|
|
#define OF_DECLARE_1(table, name, compat, fn) \
|
|
_OF_DECLARE(table, name, compat, fn, of_init_fn_1)
|
|
#define OF_DECLARE_1_RET(table, name, compat, fn) \
|
|
_OF_DECLARE(table, name, compat, fn, of_init_fn_1_ret)
|
|
#define OF_DECLARE_2(table, name, compat, fn) \
|
|
_OF_DECLARE(table, name, compat, fn, of_init_fn_2)
|
|
|
|
/**
|
|
* struct of_changeset_entry - Holds a changeset entry
|
|
*
|
|
* @node: list_head for the log list
|
|
* @action: notifier action
|
|
* @np: pointer to the device node affected
|
|
* @prop: pointer to the property affected
|
|
* @old_prop: hold a pointer to the original property
|
|
*
|
|
* Every modification of the device tree during a changeset
|
|
* is held in a list of of_changeset_entry structures.
|
|
* That way we can recover from a partial application, or we can
|
|
* revert the changeset
|
|
*/
|
|
struct of_changeset_entry {
|
|
struct list_head node;
|
|
unsigned long action;
|
|
struct device_node *np;
|
|
struct property *prop;
|
|
struct property *old_prop;
|
|
};
|
|
|
|
/**
|
|
* struct of_changeset - changeset tracker structure
|
|
*
|
|
* @entries: list_head for the changeset entries
|
|
*
|
|
* changesets are a convenient way to apply bulk changes to the
|
|
* live tree. In case of an error, changes are rolled-back.
|
|
* changesets live on after initial application, and if not
|
|
* destroyed after use, they can be reverted in one single call.
|
|
*/
|
|
struct of_changeset {
|
|
struct list_head entries;
|
|
};
|
|
|
|
enum of_reconfig_change {
|
|
OF_RECONFIG_NO_CHANGE = 0,
|
|
OF_RECONFIG_CHANGE_ADD,
|
|
OF_RECONFIG_CHANGE_REMOVE,
|
|
};
|
|
|
|
struct notifier_block;
|
|
|
|
#ifdef CONFIG_OF_DYNAMIC
|
|
extern int of_reconfig_notifier_register(struct notifier_block *);
|
|
extern int of_reconfig_notifier_unregister(struct notifier_block *);
|
|
extern int of_reconfig_notify(unsigned long, struct of_reconfig_data *rd);
|
|
extern int of_reconfig_get_state_change(unsigned long action,
|
|
struct of_reconfig_data *arg);
|
|
|
|
extern void of_changeset_init(struct of_changeset *ocs);
|
|
extern void of_changeset_destroy(struct of_changeset *ocs);
|
|
extern int of_changeset_apply(struct of_changeset *ocs);
|
|
extern int of_changeset_revert(struct of_changeset *ocs);
|
|
extern int of_changeset_action(struct of_changeset *ocs,
|
|
unsigned long action, struct device_node *np,
|
|
struct property *prop);
|
|
|
|
static inline int of_changeset_attach_node(struct of_changeset *ocs,
|
|
struct device_node *np)
|
|
{
|
|
return of_changeset_action(ocs, OF_RECONFIG_ATTACH_NODE, np, NULL);
|
|
}
|
|
|
|
static inline int of_changeset_detach_node(struct of_changeset *ocs,
|
|
struct device_node *np)
|
|
{
|
|
return of_changeset_action(ocs, OF_RECONFIG_DETACH_NODE, np, NULL);
|
|
}
|
|
|
|
static inline int of_changeset_add_property(struct of_changeset *ocs,
|
|
struct device_node *np, struct property *prop)
|
|
{
|
|
return of_changeset_action(ocs, OF_RECONFIG_ADD_PROPERTY, np, prop);
|
|
}
|
|
|
|
static inline int of_changeset_remove_property(struct of_changeset *ocs,
|
|
struct device_node *np, struct property *prop)
|
|
{
|
|
return of_changeset_action(ocs, OF_RECONFIG_REMOVE_PROPERTY, np, prop);
|
|
}
|
|
|
|
static inline int of_changeset_update_property(struct of_changeset *ocs,
|
|
struct device_node *np, struct property *prop)
|
|
{
|
|
return of_changeset_action(ocs, OF_RECONFIG_UPDATE_PROPERTY, np, prop);
|
|
}
|
|
|
|
struct device_node *of_changeset_create_node(struct of_changeset *ocs,
|
|
struct device_node *parent,
|
|
const char *full_name);
|
|
int of_changeset_add_prop_string(struct of_changeset *ocs,
|
|
struct device_node *np,
|
|
const char *prop_name, const char *str);
|
|
int of_changeset_add_prop_string_array(struct of_changeset *ocs,
|
|
struct device_node *np,
|
|
const char *prop_name,
|
|
const char **str_array, size_t sz);
|
|
int of_changeset_add_prop_u32_array(struct of_changeset *ocs,
|
|
struct device_node *np,
|
|
const char *prop_name,
|
|
const u32 *array, size_t sz);
|
|
static inline int of_changeset_add_prop_u32(struct of_changeset *ocs,
|
|
struct device_node *np,
|
|
const char *prop_name,
|
|
const u32 val)
|
|
{
|
|
return of_changeset_add_prop_u32_array(ocs, np, prop_name, &val, 1);
|
|
}
|
|
|
|
#else /* CONFIG_OF_DYNAMIC */
|
|
static inline int of_reconfig_notifier_register(struct notifier_block *nb)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
static inline int of_reconfig_notifier_unregister(struct notifier_block *nb)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
static inline int of_reconfig_notify(unsigned long action,
|
|
struct of_reconfig_data *arg)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
static inline int of_reconfig_get_state_change(unsigned long action,
|
|
struct of_reconfig_data *arg)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
#endif /* CONFIG_OF_DYNAMIC */
|
|
|
|
/**
|
|
* of_device_is_system_power_controller - Tells if system-power-controller is found for device_node
|
|
* @np: Pointer to the given device_node
|
|
*
|
|
* Return: true if present false otherwise
|
|
*/
|
|
static inline bool of_device_is_system_power_controller(const struct device_node *np)
|
|
{
|
|
return of_property_read_bool(np, "system-power-controller");
|
|
}
|
|
|
|
/*
|
|
* Overlay support
|
|
*/
|
|
|
|
enum of_overlay_notify_action {
|
|
OF_OVERLAY_INIT = 0, /* kzalloc() of ovcs sets this value */
|
|
OF_OVERLAY_PRE_APPLY,
|
|
OF_OVERLAY_POST_APPLY,
|
|
OF_OVERLAY_PRE_REMOVE,
|
|
OF_OVERLAY_POST_REMOVE,
|
|
};
|
|
|
|
static inline const char *of_overlay_action_name(enum of_overlay_notify_action action)
|
|
{
|
|
static const char *const of_overlay_action_name[] = {
|
|
"init",
|
|
"pre-apply",
|
|
"post-apply",
|
|
"pre-remove",
|
|
"post-remove",
|
|
};
|
|
|
|
return of_overlay_action_name[action];
|
|
}
|
|
|
|
struct of_overlay_notify_data {
|
|
struct device_node *overlay;
|
|
struct device_node *target;
|
|
};
|
|
|
|
#ifdef CONFIG_OF_OVERLAY
|
|
|
|
int of_overlay_fdt_apply(const void *overlay_fdt, u32 overlay_fdt_size,
|
|
int *ovcs_id, struct device_node *target_base);
|
|
int of_overlay_remove(int *ovcs_id);
|
|
int of_overlay_remove_all(void);
|
|
|
|
int of_overlay_notifier_register(struct notifier_block *nb);
|
|
int of_overlay_notifier_unregister(struct notifier_block *nb);
|
|
|
|
#else
|
|
|
|
static inline int of_overlay_fdt_apply(const void *overlay_fdt, u32 overlay_fdt_size,
|
|
int *ovcs_id, struct device_node *target_base)
|
|
{
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
static inline int of_overlay_remove(int *ovcs_id)
|
|
{
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
static inline int of_overlay_remove_all(void)
|
|
{
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
static inline int of_overlay_notifier_register(struct notifier_block *nb)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int of_overlay_notifier_unregister(struct notifier_block *nb)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif /* _LINUX_OF_H */
|