--- /dev/null
+#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/kobject.h>
+#include <linux/mod_devicetable.h>
+#include <linux/spinlock.h>
+#include <linux/topology.h>
+#include <linux/notifier.h>
+#include <linux/property.h>
+#include <linux/list.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;
+ struct bin_attribute attr;
+};
+
+#if defined(CONFIG_SPARC)
+struct of_irq_controller;
+#endif
+
+struct device_node {
+ const char *name;
+ const char *type;
+ phandle phandle;
+ const char *full_name;
+ struct fwnode_handle fwnode;
+
+ struct property *properties;
+ struct property *deadprops; /* removed properties */
+ struct device_node *parent;
+ struct device_node *child;
+ struct device_node *sibling;
+ struct kobject kobj;
+ unsigned long _flags;
+ void *data;
+#if defined(CONFIG_SPARC)
+ const char *path_component_name;
+ unsigned int unique_id;
+ struct of_irq_controller *irq_trans;
+#endif
+};
+
+#define MAX_PHANDLE_ARGS 16
+struct of_phandle_args {
+ struct device_node *np;
+ int args_count;
+ uint32_t args[MAX_PHANDLE_ARGS];
+};
+
+struct of_reconfig_data {
+ struct device_node *dn;
+ struct property *prop;
+ struct property *old_prop;
+};
+
+/* initialize a node */
+extern struct kobj_type of_node_ktype;
+static inline void of_node_init(struct device_node *node)
+{
+ kobject_init(&node->kobj, &of_node_ktype);
+ node->fwnode.type = FWNODE_OF;
+}
+
+/* true when node is initialized */
+static inline int of_node_is_initialized(struct device_node *node)
+{
+ return node && node->kobj.state_initialized;
+}
+
+/* true when node is attached (i.e. present on sysfs) */
+static inline int of_node_is_attached(struct device_node *node)
+{
+ return node && node->kobj.state_in_sysfs;
+}
+
+#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 */
+
+/* Pointer for first entry in chain of all nodes. */
+extern struct device_node *of_root;
+extern struct device_node *of_chosen;
+extern struct device_node *of_aliases;
+extern struct device_node *of_stdout;
+extern raw_spinlock_t devtree_lock;
+
+#ifdef CONFIG_OF
+void of_core_init(void);
+
+static inline bool is_of_node(struct fwnode_handle *fwnode)
+{
+ return fwnode && fwnode->type == FWNODE_OF;
+}
+
+static inline struct device_node *of_node(struct fwnode_handle *fwnode)
+{
+ return fwnode ? container_of(fwnode, struct device_node, fwnode) : NULL;
+}
+
+static inline bool of_have_populated_dt(void)
+{
+ return of_root != 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 int of_node_test_and_set_flag(struct device_node *n,
+ unsigned long flag)
+{
+ return test_and_set_bit(flag, &n->_flags);
+}
+
+static inline void of_node_set_flag(struct device_node *n, unsigned long flag)
+{
+ set_bit(flag, &n->_flags);
+}
+
+static inline void of_node_clear_flag(struct device_node *n, unsigned long flag)
+{
+ clear_bit(flag, &n->_flags);
+}
+
+static inline int of_property_check_flag(struct property *p, unsigned long flag)
+{
+ return test_bit(flag, &p->_flags);
+}
+
+static inline void of_property_set_flag(struct property *p, unsigned long flag)
+{
+ set_bit(flag, &p->_flags);
+}
+
+static inline void of_property_clear_flag(struct property *p, unsigned long flag)
+{
+ clear_bit(flag, &p->_flags);
+}
+
+extern struct device_node *__of_find_all_nodes(struct device_node *prev);
+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);
+}
+
+#if defined(CONFIG_SPARC)
+#include <asm/prom.h>
+#endif
+
+/* 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_POPULATED 3 /* device already created for the node */
+#define OF_POPULATED_BUS 4 /* of_platform_populate recursed to children of this node */
+
+#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)
+
+static inline const char *of_node_full_name(const struct device_node *np)
+{
+ return np ? np->full_name : "<no-node>";
+}
+
+#define for_each_of_allnodes_from(from, dn) \
+ for (dn = __of_find_all_nodes(from); dn; dn = __of_find_all_nodes(dn))
+#define for_each_of_allnodes(dn) for_each_of_allnodes_from(NULL, dn)
+extern struct device_node *of_find_node_by_name(struct device_node *from,
+ const char *name);
+extern struct device_node *of_find_node_by_type(struct device_node *from,
+ const char *type);
+extern struct device_node *of_find_compatible_node(struct device_node *from,
+ const char *type, const char *compat);
+extern 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);
+
+extern struct device_node *of_find_node_opts_by_path(const char *path,
+ const char **opts);
+static inline struct device_node *of_find_node_by_path(const char *path)
+{
+ return of_find_node_opts_by_path(path, NULL);
+}
+
+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);
+extern struct device_node *of_get_next_available_child(
+ const struct device_node *node, struct device_node *prev);
+
+extern struct device_node *of_get_child_by_name(const struct device_node *node,
+ const char *name);
+
+/* cache lookup */
+extern struct device_node *of_find_next_cache_node(const struct device_node *);
+extern struct device_node *of_find_node_with_property(
+ struct device_node *from, const char *prop_name);
+
+extern struct property *of_find_property(const struct device_node *np,
+ const char *name,
+ int *lenp);
+extern int of_property_count_elems_of_size(const struct device_node *np,
+ const char *propname, int elem_size);
+extern int of_property_read_u32_index(const struct device_node *np,
+ const char *propname,
+ u32 index, u32 *out_value);
+extern int of_property_read_u8_array(const struct device_node *np,
+ const char *propname, u8 *out_values, size_t sz);
+extern int of_property_read_u16_array(const struct device_node *np,
+ const char *propname, u16 *out_values, size_t sz);
+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_u64_array(const struct device_node *np,
+ const char *propname,
+ u64 *out_values,
+ size_t sz);
+
+extern int of_property_read_string(struct device_node *np,
+ const char *propname,
+ const char **out_string);
+extern int of_property_match_string(struct device_node *np,
+ const char *propname,
+ const char *string);
+extern int of_property_read_string_helper(struct device_node *np,
+ const char *propname,
+ const char **out_strs, size_t sz, int index);
+extern int of_device_is_compatible(const struct device_node *device,
+ const char *);
+extern bool of_device_is_available(const struct device_node *device);
+extern bool of_device_is_big_endian(const struct device_node *device);
+extern const void *of_get_property(const struct device_node *node,
+ const char *name,
+ int *lenp);
+extern struct device_node *of_get_cpu_node(int cpu, unsigned int *thread);
+#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 void of_print_phandle_args(const char *msg, const struct of_phandle_args *args);
+extern struct device_node *of_parse_phandle(const struct device_node *np,
+ const char *phandle_name,
+ int index);
+extern 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);
+extern int of_parse_phandle_with_fixed_args(const struct device_node *np,
+ const char *list_name, int cells_count, int index,
+ struct of_phandle_args *out_args);
+extern int of_count_phandle_with_args(const struct device_node *np,
+ const char *list_name, const char *cells_name);
+
+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_alias_get_highest_id(const char *stem);
+
+extern int of_machine_is_compatible(const char *compat);
+
+extern int of_add_property(struct device_node *np, struct property *prop);
+extern int of_remove_property(struct device_node *np, struct property *prop);
+extern int of_update_property(struct device_node *np, struct property *newprop);
+
+/* For updating the device tree at runtime */
+#define OF_RECONFIG_ATTACH_NODE 0x0001
+#define OF_RECONFIG_DETACH_NODE 0x0002
+#define OF_RECONFIG_ADD_PROPERTY 0x0003
+#define OF_RECONFIG_REMOVE_PROPERTY 0x0004
+#define OF_RECONFIG_UPDATE_PROPERTY 0x0005
+
+extern int of_attach_node(struct device_node *);
+extern int of_detach_node(struct device_node *);
+
+#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);
+/*
+ * 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);
+
+bool of_console_check(struct device_node *dn, char *name, int index);
+
+#else /* CONFIG_OF */
+
+static inline void of_core_init(void)
+{
+}
+
+static inline bool is_of_node(struct fwnode_handle *fwnode)
+{
+ return false;
+}
+
+static inline struct device_node *of_node(struct fwnode_handle *fwnode)
+{
+ return NULL;
+}
+
+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_get_parent(const 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;
+}
+
+static inline bool of_have_populated_dt(void)
+{
+ return false;
+}
+
+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 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_u8_array(const struct device_node *np,
+ const char *propname, u8 *out_values, size_t sz)
+{
+ return -ENOSYS;
+}
+
+static inline int of_property_read_u16_array(const struct device_node *np,
+ const char *propname, u16 *out_values, size_t sz)
+{
+ return -ENOSYS;
+}
+
+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_u64_array(const struct device_node *np,
+ const char *propname,
+ u64 *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_helper(struct device_node *np,
+ const char *propname,
+ const char **out_strs, size_t sz, int index)
+{
+ 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 int of_property_read_u64(const struct device_node *np,
+ const char *propname, u64 *out_value)
+{
+ return -ENOSYS;
+}
+
+static inline int of_property_match_string(struct device_node *np,
+ const char *propname,
+ const char *string)
+{
+ return -ENOSYS;
+}
+
+static inline struct device_node *of_parse_phandle(const struct device_node *np,
+ const char *phandle_name,
+ int index)
+{
+ return NULL;
+}
+
+static inline 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)
+{
+ return -ENOSYS;
+}
+
+static inline int of_parse_phandle_with_fixed_args(const struct device_node *np,
+ const char *list_name, int cells_count, int index,
+ struct of_phandle_args *out_args)
+{
+ return -ENOSYS;
+}
+
+static inline int of_count_phandle_with_args(struct device_node *np,
+ const char *list_name,
+ const char *cells_name)
+{
+ return -ENOSYS;
+}
+
+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 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(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)
+{
+}
+
+#define of_match_ptr(_ptr) NULL
+#define of_match_node(_matches, _node) NULL
+#endif /* CONFIG_OF */
+
+#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 0; }
+#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);
+}
+
+/**
+ * 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. Returns 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. Returns 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. Returns 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. Returns 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.
+ *
+ * If @out_strs is NULL, the number of strings in the property is returned.
+ */
+static inline int of_property_read_string_array(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. Returns 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(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
+ * @out_string: 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.
+ * Returns 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(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 - 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_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_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_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;
+}
+
+#ifdef CONFIG_OF
+#define _OF_DECLARE(table, name, compat, fn, fn_type) \
+ static const struct of_device_id __of_table_##name \
+ __used __section(__##table##_of_table) \
+ = { .compatible = compat, \
+ .data = (fn == (fn_type)NULL) ? fn : fn }
+#else
+#define _OF_DECLARE(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 }
+#endif
+
+typedef int (*of_init_fn_2)(struct device_node *, 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_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,
+};
+
+#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);
+}
+#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 */
+
+/* CONFIG_OF_RESOLVE api */
+extern int of_resolve_phandles(struct device_node *tree);
+
+/**
+ * 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
+ */
+
+#ifdef CONFIG_OF_OVERLAY
+
+/* ID based overlays; the API for external users */
+int of_overlay_create(struct device_node *tree);
+int of_overlay_destroy(int id);
+int of_overlay_destroy_all(void);
+
+#else
+
+static inline int of_overlay_create(struct device_node *tree)
+{
+ return -ENOTSUPP;
+}
+
+static inline int of_overlay_destroy(int id)
+{
+ return -ENOTSUPP;
+}
+
+static inline int of_overlay_destroy_all(void)
+{
+ return -ENOTSUPP;
+}
+
+#endif
+
+#endif /* _LINUX_OF_H */
Code Review / kvmfornfv.git / blobdiff