[mirror_ubuntu-focal-kernel.git] / include / linux / of.h

#ifndef _LINUX_OF_H
#define _LINUX_OF_H
/*
 * Definitions for talking to the Open Firmware PROM on
 * Power Macintosh and other computers.
 *
 * Copyright (C) 1996-2005 Paul Mackerras.
 *
 * Updates for PPC64 by Peter Bergner & David Engebretsen, IBM Corp.
 * Updates for SPARC64 by David S. Miller
 * Derived from PowerPC and Sparc prom.h files by Stephen Rothwell, IBM Corp.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */
#include <linux/types.h>
#include <linux/bitops.h>
#include <linux/errno.h>
#include <linux/kref.h>
#include <linux/mod_devicetable.h>
#include <linux/spinlock.h>

#include <asm/byteorder.h>
#include <asm/errno.h>

typedef u32 phandle;
typedef u32 ihandle;

struct property {
	char	*name;
	int	length;
	void	*value;
	struct property *next;
	unsigned long _flags;
	unsigned int unique_id;
};

#if defined(CONFIG_SPARC)
struct of_irq_controller;
#endif

struct device_node {
	const char *name;
	const char *type;
	phandle phandle;
	char	*full_name;

	struct	property *properties;
	struct	property *deadprops;	/* removed properties */
	struct	device_node *parent;
	struct	device_node *child;
	struct	device_node *sibling;
	struct	device_node *next;	/* next device of same type */
	struct	device_node *allnext;	/* next in list of all nodes */
	struct	proc_dir_entry *pde;	/* this node's proc directory */
	struct	kref kref;
	unsigned long _flags;
	void	*data;
#if defined(CONFIG_SPARC)
	char	*path_component_name;
	unsigned int unique_id;
	struct of_irq_controller *irq_trans;
#endif
};

#define MAX_PHANDLE_ARGS 8
struct of_phandle_args {
	struct device_node *np;
	int args_count;
	uint32_t args[MAX_PHANDLE_ARGS];
};

#ifdef CONFIG_OF_DYNAMIC
extern struct device_node *of_node_get(struct device_node *node);
extern void of_node_put(struct device_node *node);
#else /* CONFIG_OF_DYNAMIC */
/* Dummy ref counting routines - to be implemented later */
static inline struct device_node *of_node_get(struct device_node *node)
{
	return node;
}
static inline void of_node_put(struct device_node *node) { }
#endif /* !CONFIG_OF_DYNAMIC */

#ifdef CONFIG_OF

/* Pointer for first entry in chain of all nodes. */
extern struct device_node *allnodes;
extern struct device_node *of_chosen;
extern struct device_node *of_aliases;
extern rwlock_t devtree_lock;

static inline bool of_have_populated_dt(void)
{
	return allnodes != NULL;
}

static inline bool of_node_is_root(const struct device_node *node)
{
	return node && (node->parent == NULL);
}

static inline int of_node_check_flag(struct device_node *n, unsigned long flag)
{
	return test_bit(flag, &n->_flags);
}

static inline void of_node_set_flag(struct device_node *n, unsigned long flag)
{
	set_bit(flag, &n->_flags);
}

extern struct device_node *of_find_all_nodes(struct device_node *prev);

/*
 * OF address retrieval & translation
 */

/* Helper to read a big number; size is in cells (not bytes) */
static inline u64 of_read_number(const __be32 *cell, int size)
{
	u64 r = 0;
	while (size--)
		r = (r << 32) | be32_to_cpu(*(cell++));
	return r;
}

/* Like of_read_number, but we want an unsigned long result */
static inline unsigned long of_read_ulong(const __be32 *cell, int size)
{
	/* toss away upper bits if unsigned long is smaller than u64 */
	return of_read_number(cell, size);
}

#include <asm/prom.h>

/* Default #address and #size cells.  Allow arch asm/prom.h to override */
#if !defined(OF_ROOT_NODE_ADDR_CELLS_DEFAULT)
#define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 1
#define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1
#endif

/* 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

/* flag descriptions */
#define OF_DYNAMIC	1 /* node and properties were allocated via kmalloc */
#define OF_DETACHED	2 /* node has been detached from the device tree */

#define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags)
#define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags)

#define OF_BAD_ADDR	((u64)-1)

#ifndef of_node_to_nid
static inline int of_node_to_nid(struct device_node *np) { return -1; }
#define of_node_to_nid of_node_to_nid
#endif

static inline const char* of_node_full_name(struct device_node *np)
{
	return np ? np->full_name : "<no-node>";
}

extern struct device_node *of_find_node_by_name(struct device_node *from,
	const char *name);
#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))
extern struct device_node *of_find_node_by_type(struct device_node *from,
	const char *type);
#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))
extern struct device_node *of_find_compatible_node(struct device_node *from,
	const char *type, const char *compat);
#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))
extern struct device_node *of_find_matching_node(struct device_node *from,
	const struct of_device_id *matches);
#define for_each_matching_node(dn, matches) \
	for (dn = of_find_matching_node(NULL, matches); dn; \
	     dn = of_find_matching_node(dn, matches))
extern struct device_node *of_find_node_by_path(const char *path);
extern struct device_node *of_find_node_by_phandle(phandle handle);
extern struct device_node *of_get_parent(const struct device_node *node);
extern struct device_node *of_get_next_parent(struct device_node *node);
extern struct device_node *of_get_next_child(const struct device_node *node,
					     struct device_node *prev);
#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))

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;
}

extern struct device_node *of_find_node_with_property(
	struct device_node *from, const char *prop_name);
#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))

extern struct property *of_find_property(const struct device_node *np,
					 const char *name,
					 int *lenp);
extern int of_property_read_u32_array(const struct device_node *np,
				      const char *propname,
				      u32 *out_values,
				      size_t sz);
extern int of_property_read_u64(const struct device_node *np,
				const char *propname, u64 *out_value);

extern int of_property_read_string(struct device_node *np,
				   const char *propname,
				   const char **out_string);
extern int of_property_read_string_index(struct device_node *np,
					 const char *propname,
					 int index, const char **output);
extern int of_property_match_string(struct device_node *np,
				    const char *propname,
				    const char *string);
extern int of_property_count_strings(struct device_node *np,
				     const char *propname);
extern int of_device_is_compatible(const struct device_node *device,
				   const char *);
extern int of_device_is_available(const struct device_node *device);
extern const void *of_get_property(const struct device_node *node,
				const char *name,
				int *lenp);
#define for_each_property_of_node(dn, pp) \
	for (pp = dn->properties; pp != NULL; pp = pp->next)

extern int of_n_addr_cells(struct device_node *np);
extern int of_n_size_cells(struct device_node *np);
extern const struct of_device_id *of_match_node(
	const struct of_device_id *matches, const struct device_node *node);
extern int of_modalias_node(struct device_node *node, char *modalias, int len);
extern struct device_node *of_parse_phandle(struct device_node *np,
					    const char *phandle_name,
					    int index);
extern int of_parse_phandle_with_args(struct device_node *np,
	const char *list_name, const char *cells_name, int index,
	struct of_phandle_args *out_args);

extern void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align));
extern int of_alias_get_id(struct device_node *np, const char *stem);

extern int of_machine_is_compatible(const char *compat);

extern int prom_add_property(struct device_node* np, struct property* prop);
extern int prom_remove_property(struct device_node *np, struct property *prop);
extern int prom_update_property(struct device_node *np,
				struct property *newprop,
				struct property *oldprop);

#if defined(CONFIG_OF_DYNAMIC)
/* For updating the device tree at runtime */
extern void of_attach_node(struct device_node *);
extern void of_detach_node(struct device_node *);
#endif

#define of_match_ptr(_ptr)	(_ptr)

/*
 * struct property *prop;
 * const __be32 *p;
 * u32 u;
 *
 * of_property_for_each_u32(np, "propname", prop, p, u)
 *         printk("U32 value: %x\n", u);
 */
const __be32 *of_prop_next_u32(struct property *prop, const __be32 *cur,
			       u32 *pu);
#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))

/*
 * struct property *prop;
 * const char *s;
 *
 * of_property_for_each_string(np, "propname", prop, s)
 *         printk("String value: %s\n", s);
 */
const char *of_prop_next_string(struct property *prop, const char *cur);
#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))

#else /* CONFIG_OF */

static inline const char* of_node_full_name(struct device_node *np)
{
	return "<no-node>";
}

static inline bool of_have_populated_dt(void)
{
	return false;
}

#define for_each_child_of_node(parent, child) \
	while (0)

static inline int of_get_child_count(const struct device_node *np)
{
	return 0;
}

static inline int of_device_is_compatible(const struct device_node *device,
					  const char *name)
{
	return 0;
}

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_read_u32_array(const struct device_node *np,
					     const char *propname,
					     u32 *out_values, size_t sz)
{
	return -ENOSYS;
}

static inline int of_property_read_string(struct device_node *np,
					  const char *propname,
					  const char **out_string)
{
	return -ENOSYS;
}

static inline int of_property_read_string_index(struct device_node *np,
						const char *propname, int index,
						const char **out_string)
{
	return -ENOSYS;
}

static inline int of_property_count_strings(struct device_node *np,
					    const char *propname)
{
	return -ENOSYS;
}

static inline const void *of_get_property(const struct device_node *node,
				const char *name,
				int *lenp)
{
	return NULL;
}

static inline int of_property_read_u64(const struct device_node *np,
				       const char *propname, u64 *out_value)
{
	return -ENOSYS;
}

static inline struct device_node *of_parse_phandle(struct device_node *np,
						   const char *phandle_name,
						   int index)
{
	return NULL;
}

static inline int of_alias_get_id(struct device_node *np, const char *stem)
{
	return -ENOSYS;
}

static inline int of_machine_is_compatible(const char *compat)
{
	return 0;
}

#define of_match_ptr(_ptr)	NULL
#define of_match_node(_matches, _node)	NULL
#define of_property_for_each_u32(np, propname, prop, p, u) \
	while (0)
#define of_property_for_each_string(np, propname, prop, s) \
	while (0)
#endif /* CONFIG_OF */

/**
 * of_property_read_bool - Findfrom 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.
 * Returns true if the property exist 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;
}

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);
}

#endif /* _LINUX_OF_H */
Commit	Line	Data
76c1ce78 SR	1	#ifndef _LINUX_OF_H
	2	#define _LINUX_OF_H
	3	/*
	4	* Definitions for talking to the Open Firmware PROM on
	5	* Power Macintosh and other computers.
	6	*
	7	* Copyright (C) 1996-2005 Paul Mackerras.
	8	*
	9	* Updates for PPC64 by Peter Bergner & David Engebretsen, IBM Corp.
	10	* Updates for SPARC64 by David S. Miller
	11	* Derived from PowerPC and Sparc prom.h files by Stephen Rothwell, IBM Corp.
	12	*
	13	* This program is free software; you can redistribute it and/or
	14	* modify it under the terms of the GNU General Public License
	15	* as published by the Free Software Foundation; either version
	16	* 2 of the License, or (at your option) any later version.
	17	*/
	18	#include <linux/types.h>
1977f032	19	#include <linux/bitops.h>
e51130c0	20	#include <linux/errno.h>
6f192492	21	#include <linux/kref.h>
283029d1	22	#include <linux/mod_devicetable.h>
0d351c3e	23	#include <linux/spinlock.h>
76c1ce78	24
2e89e685	25	#include <asm/byteorder.h>
d0a99402	26	#include <asm/errno.h>
2e89e685	27
731581e6 GL	28	typedef u32 phandle;
	29	typedef u32 ihandle;
	30
	31	struct property {
	32	char *name;
	33	int length;
	34	void *value;
	35	struct property *next;
	36	unsigned long _flags;
	37	unsigned int unique_id;
	38	};
	39
6f192492 GL	40	#if defined(CONFIG_SPARC)
	41	struct of_irq_controller;
	42	#endif
	43
	44	struct device_node {
	45	const char *name;
	46	const char *type;
6016a363	47	phandle phandle;
6f192492 GL	48	char *full_name;
	49
	50	struct property *properties;
	51	struct property deadprops; / removed properties */
	52	struct device_node *parent;
	53	struct device_node *child;
	54	struct device_node *sibling;
	55	struct device_node next; / next device of same type */
	56	struct device_node allnext; / next in list of all nodes */
	57	struct proc_dir_entry pde; / this node's proc directory */
	58	struct kref kref;
	59	unsigned long _flags;
	60	void *data;
	61	#if defined(CONFIG_SPARC)
	62	char *path_component_name;
	63	unsigned int unique_id;
	64	struct of_irq_controller *irq_trans;
	65	#endif
	66	};
	67
15c9a0ac GL	68	#define MAX_PHANDLE_ARGS 8
	69	struct of_phandle_args {
	70	struct device_node *np;
	71	int args_count;
	72	uint32_t args[MAX_PHANDLE_ARGS];
	73	};
	74
0f22dd39 GL	75	#ifdef CONFIG_OF_DYNAMIC
	76	extern struct device_node of_node_get(struct device_node node);
	77	extern void of_node_put(struct device_node *node);
	78	#else /* CONFIG_OF_DYNAMIC */
3ecdd051 RH	79	/* Dummy ref counting routines - to be implemented later */
	80	static inline struct device_node of_node_get(struct device_node node)
	81	{
	82	return node;
	83	}
0f22dd39 GL	84	static inline void of_node_put(struct device_node *node) { }
0f22dd39 GL	85	#endif /* !CONFIG_OF_DYNAMIC */
3ecdd051	86
c9e358df GL	87	#ifdef CONFIG_OF
c9e358df GL	88
41f88009 GL	89	/* Pointer for first entry in chain of all nodes. */
41f88009 GL	90	extern struct device_node *allnodes;
fc0bdae4	91	extern struct device_node *of_chosen;
611cad72	92	extern struct device_node *of_aliases;
0d351c3e	93	extern rwlock_t devtree_lock;
41f88009	94
3bcbaf6e SAS	95	static inline bool of_have_populated_dt(void)
	96	{
	97	return allnodes != NULL;
	98	}
	99
035ebefc AS	100	static inline bool of_node_is_root(const struct device_node *node)
	101	{
	102	return node && (node->parent == NULL);
	103	}
	104
50436312 GL	105	static inline int of_node_check_flag(struct device_node *n, unsigned long flag)
	106	{
	107	return test_bit(flag, &n->_flags);
	108	}
	109
	110	static inline void of_node_set_flag(struct device_node *n, unsigned long flag)
	111	{
	112	set_bit(flag, &n->_flags);
	113	}
	114
e91edcf5 GL	115	extern struct device_node of_find_all_nodes(struct device_node prev);
e91edcf5 GL	116
b6caf2ad	117	/*
3d6b8828	118	* OF address retrieval & translation
b6caf2ad GL	119	*/
	120
	121	/* Helper to read a big number; size is in cells (not bytes) */
2e89e685	122	static inline u64 of_read_number(const __be32 *cell, int size)
b6caf2ad GL	123	{
	124	u64 r = 0;
	125	while (size--)
2e89e685	126	r = (r << 32) \| be32_to_cpu(*(cell++));
b6caf2ad GL	127	return r;
	128	}
	129
	130	/* Like of_read_number, but we want an unsigned long result */
2e89e685	131	static inline unsigned long of_read_ulong(const __be32 *cell, int size)
b6caf2ad	132	{
2be09cb9 GL	133	/* toss away upper bits if unsigned long is smaller than u64 */
2be09cb9 GL	134	return of_read_number(cell, size);
b6caf2ad	135	}
b6caf2ad	136
76c1ce78 SR	137	#include <asm/prom.h>
76c1ce78 SR	138
7c7b60cb GL	139	/* Default #address and #size cells. Allow arch asm/prom.h to override */
	140	#if !defined(OF_ROOT_NODE_ADDR_CELLS_DEFAULT)
	141	#define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 1
	142	#define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1
	143	#endif
	144
	145	/* Default string compare functions, Allow arch asm/prom.h to override */
	146	#if !defined(of_compat_cmp)
1976152f	147	#define of_compat_cmp(s1, s2, l) strcasecmp((s1), (s2))
7c7b60cb GL	148	#define of_prop_cmp(s1, s2) strcmp((s1), (s2))
	149	#define of_node_cmp(s1, s2) strcasecmp((s1), (s2))
	150	#endif
	151
76c1ce78 SR	152	/* flag descriptions */
	153	#define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */
	154	#define OF_DETACHED 2 /* node has been detached from the device tree */
	155
61e955db GL	156	#define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags)
	157	#define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags)
	158
76c1ce78 SR	159	#define OF_BAD_ADDR ((u64)-1)
76c1ce78 SR	160
559e2b7e GL	161	#ifndef of_node_to_nid
	162	static inline int of_node_to_nid(struct device_node *np) { return -1; }
	163	#define of_node_to_nid of_node_to_nid
	164	#endif
	165
efd68e72 GL	166	static inline const char* of_node_full_name(struct device_node *np)
	167	{
	168	return np ? np->full_name : "<no-node>";
	169	}
	170
76c1ce78 SR	171	extern struct device_node of_find_node_by_name(struct device_node from,
	172	const char *name);
	173	#define for_each_node_by_name(dn, name) \
	174	for (dn = of_find_node_by_name(NULL, name); dn; \
	175	dn = of_find_node_by_name(dn, name))
	176	extern struct device_node of_find_node_by_type(struct device_node from,
	177	const char *type);
	178	#define for_each_node_by_type(dn, type) \
	179	for (dn = of_find_node_by_type(NULL, type); dn; \
	180	dn = of_find_node_by_type(dn, type))
	181	extern struct device_node of_find_compatible_node(struct device_node from,
	182	const char type, const char compat);
	183	#define for_each_compatible_node(dn, type, compatible) \
	184	for (dn = of_find_compatible_node(NULL, type, compatible); dn; \
	185	dn = of_find_compatible_node(dn, type, compatible))
283029d1 GL	186	extern struct device_node of_find_matching_node(struct device_node from,
	187	const struct of_device_id *matches);
	188	#define for_each_matching_node(dn, matches) \
	189	for (dn = of_find_matching_node(NULL, matches); dn; \
	190	dn = of_find_matching_node(dn, matches))
76c1ce78 SR	191	extern struct device_node of_find_node_by_path(const char path);
	192	extern struct device_node *of_find_node_by_phandle(phandle handle);
	193	extern struct device_node of_get_parent(const struct device_node node);
f4eb0107	194	extern struct device_node of_get_next_parent(struct device_node node);
76c1ce78 SR	195	extern struct device_node of_get_next_child(const struct device_node node,
76c1ce78 SR	196	struct device_node *prev);
aabc08dc ME	197	#define for_each_child_of_node(parent, child) \
	198	for (child = of_get_next_child(parent, NULL); child != NULL; \
	199	child = of_get_next_child(parent, child))
	200
183f1d0c DA	201	static inline int of_get_child_count(const struct device_node *np)
	202	{
	203	struct device_node *child;
	204	int num = 0;
	205
	206	for_each_child_of_node(np, child)
	207	num++;
	208
	209	return num;
	210	}
	211
1e291b14 ME	212	extern struct device_node *of_find_node_with_property(
	213	struct device_node from, const char prop_name);
	214	#define for_each_node_with_property(dn, prop_name) \
	215	for (dn = of_find_node_with_property(NULL, prop_name); dn; \
	216	dn = of_find_node_with_property(dn, prop_name))
	217
76c1ce78 SR	218	extern struct property of_find_property(const struct device_node np,
	219	const char *name,
	220	int *lenp);
0e373639	221	extern int of_property_read_u32_array(const struct device_node *np,
aac285c6	222	const char *propname,
0e373639 RH	223	u32 *out_values,
0e373639 RH	224	size_t sz);
4cd7f7a3 JI	225	extern int of_property_read_u64(const struct device_node *np,
4cd7f7a3 JI	226	const char propname, u64 out_value);
0e373639	227
aac285c6 JI	228	extern int of_property_read_string(struct device_node *np,
	229	const char *propname,
	230	const char **out_string);
4fcd15a0 BC	231	extern int of_property_read_string_index(struct device_node *np,
	232	const char *propname,
	233	int index, const char **output);
7aff0fe3 GL	234	extern int of_property_match_string(struct device_node *np,
	235	const char *propname,
	236	const char *string);
4fcd15a0 BC	237	extern int of_property_count_strings(struct device_node *np,
4fcd15a0 BC	238	const char *propname);
76c1ce78 SR	239	extern int of_device_is_compatible(const struct device_node *device,
76c1ce78 SR	240	const char *);
834d97d4	241	extern int of_device_is_available(const struct device_node *device);
76c1ce78 SR	242	extern const void of_get_property(const struct device_node node,
	243	const char *name,
	244	int *lenp);
8af0da93 DA	245	#define for_each_property_of_node(dn, pp) \
8af0da93 DA	246	for (pp = dn->properties; pp != NULL; pp = pp->next)
611cad72	247
76c1ce78 SR	248	extern int of_n_addr_cells(struct device_node *np);
76c1ce78 SR	249	extern int of_n_size_cells(struct device_node *np);
283029d1 GL	250	extern const struct of_device_id *of_match_node(
283029d1 GL	251	const struct of_device_id matches, const struct device_node node);
3f07af49	252	extern int of_modalias_node(struct device_node node, char modalias, int len);
739649c5 GL	253	extern struct device_node of_parse_phandle(struct device_node np,
	254	const char *phandle_name,
	255	int index);
15c9a0ac	256	extern int of_parse_phandle_with_args(struct device_node *np,
64b60e09	257	const char list_name, const char cells_name, int index,
15c9a0ac	258	struct of_phandle_args *out_args);
76c1ce78	259
611cad72 SG	260	extern void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align));
	261	extern int of_alias_get_id(struct device_node np, const char stem);
	262
21b082ec GL	263	extern int of_machine_is_compatible(const char *compat);
	264
	265	extern int prom_add_property(struct device_node* np, struct property* prop);
	266	extern int prom_remove_property(struct device_node np, struct property prop);
	267	extern int prom_update_property(struct device_node *np,
	268	struct property *newprop,
	269	struct property *oldprop);
	270
fcdeb7fe GL	271	#if defined(CONFIG_OF_DYNAMIC)
	272	/* For updating the device tree at runtime */
	273	extern void of_attach_node(struct device_node *);
	274	extern void of_detach_node(struct device_node *);
	275	#endif
	276
3a1e362e	277	#define of_match_ptr(_ptr) (_ptr)
c541adc6 SW	278
	279	/*
	280	* struct property *prop;
	281	* const __be32 *p;
	282	* u32 u;
	283	*
	284	* of_property_for_each_u32(np, "propname", prop, p, u)
	285	* printk("U32 value: %x\n", u);
	286	*/
	287	const __be32 of_prop_next_u32(struct property prop, const __be32 *cur,
	288	u32 *pu);
	289	#define of_property_for_each_u32(np, propname, prop, p, u) \
	290	for (prop = of_find_property(np, propname, NULL), \
	291	p = of_prop_next_u32(prop, NULL, &u); \
	292	p; \
	293	p = of_prop_next_u32(prop, p, &u))
	294
	295	/*
	296	* struct property *prop;
	297	* const char *s;
	298	*
	299	* of_property_for_each_string(np, "propname", prop, s)
	300	* printk("String value: %s\n", s);
	301	*/
	302	const char of_prop_next_string(struct property prop, const char *cur);
	303	#define of_property_for_each_string(np, propname, prop, s) \
	304	for (prop = of_find_property(np, propname, NULL), \
	305	s = of_prop_next_string(prop, NULL); \
	306	s; \
	307	s = of_prop_next_string(prop, s))
	308
b98c0239	309	#else /* CONFIG_OF */
3bcbaf6e	310
efd68e72 GL	311	static inline const char* of_node_full_name(struct device_node *np)
	312	{
	313	return "<no-node>";
	314	}
	315
3bcbaf6e SAS	316	static inline bool of_have_populated_dt(void)
	317	{
	318	return false;
	319	}
	320
aba3dfff SW	321	#define for_each_child_of_node(parent, child) \
	322	while (0)
	323
183f1d0c DA	324	static inline int of_get_child_count(const struct device_node *np)
	325	{
	326	return 0;
	327	}
	328
36a0904e RN	329	static inline int of_device_is_compatible(const struct device_node *device,
	330	const char *name)
	331	{
	332	return 0;
	333	}
	334
aba3dfff SW	335	static inline struct property of_find_property(const struct device_node np,
	336	const char *name,
	337	int *lenp)
	338	{
	339	return NULL;
	340	}
	341
2261cc62 SG	342	static inline struct device_node *of_find_compatible_node(
	343	struct device_node *from,
	344	const char *type,
	345	const char *compat)
	346	{
	347	return NULL;
	348	}
	349
b98c0239	350	static inline int of_property_read_u32_array(const struct device_node *np,
aac285c6 JI	351	const char *propname,
aac285c6 JI	352	u32 *out_values, size_t sz)
b98c0239 SG	353	{
	354	return -ENOSYS;
	355	}
	356
	357	static inline int of_property_read_string(struct device_node *np,
aac285c6 JI	358	const char *propname,
aac285c6 JI	359	const char **out_string)
b98c0239 SG	360	{
	361	return -ENOSYS;
	362	}
	363
4fcd15a0 BC	364	static inline int of_property_read_string_index(struct device_node *np,
	365	const char *propname, int index,
	366	const char **out_string)
	367	{
	368	return -ENOSYS;
	369	}
	370
	371	static inline int of_property_count_strings(struct device_node *np,
	372	const char *propname)
	373	{
	374	return -ENOSYS;
	375	}
	376
89272b8c SW	377	static inline const void of_get_property(const struct device_node node,
	378	const char *name,
	379	int *lenp)
	380	{
	381	return NULL;
	382	}
	383
4cd7f7a3 JI	384	static inline int of_property_read_u64(const struct device_node *np,
	385	const char propname, u64 out_value)
	386	{
	387	return -ENOSYS;
	388	}
	389
36a0904e RN	390	static inline struct device_node of_parse_phandle(struct device_node np,
	391	const char *phandle_name,
	392	int index)
	393	{
	394	return NULL;
	395	}
	396
ed5f886d NF	397	static inline int of_alias_get_id(struct device_node np, const char stem)
	398	{
	399	return -ENOSYS;
	400	}
	401
50e07f88 SW	402	static inline int of_machine_is_compatible(const char *compat)
	403	{
	404	return 0;
	405	}
	406
3a1e362e	407	#define of_match_ptr(_ptr) NULL
5762c205	408	#define of_match_node(_matches, _node) NULL
c541adc6 SW	409	#define of_property_for_each_u32(np, propname, prop, p, u) \
	410	while (0)
	411	#define of_property_for_each_string(np, propname, prop, s) \
	412	while (0)
9dfbf207	413	#endif /* CONFIG_OF */
b98c0239	414
fa4d34cc JCPV	415	/**
	416	* of_property_read_bool - Findfrom a property
	417	* @np: device node from which the property value is to be read.
	418	* @propname: name of the property to be searched.
	419	*
	420	* Search for a property in a device node.
	421	* Returns true if the property exist false otherwise.
	422	*/
	423	static inline bool of_property_read_bool(const struct device_node *np,
	424	const char *propname)
	425	{
	426	struct property *prop = of_find_property(np, propname, NULL);
	427
	428	return prop ? true : false;
	429	}
	430
b98c0239	431	static inline int of_property_read_u32(const struct device_node *np,
aac285c6	432	const char *propname,
b98c0239 SG	433	u32 *out_value)
	434	{
	435	return of_property_read_u32_array(np, propname, out_value, 1);
	436	}
	437
76c1ce78	438	#endif /* _LINUX_OF_H */