diff options
Diffstat (limited to 'include/linux/of.h')
| -rw-r--r-- | include/linux/of.h | 137 |
1 files changed, 123 insertions, 14 deletions
diff --git a/include/linux/of.h b/include/linux/of.h index 435cb995904d..919bf211877d 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -18,7 +18,7 @@ #include <linux/types.h> #include <linux/bitops.h> #include <linux/errno.h> -#include <linux/kref.h> +#include <linux/kobject.h> #include <linux/mod_devicetable.h> #include <linux/spinlock.h> #include <linux/topology.h> @@ -37,6 +37,7 @@ struct property { struct property *next; unsigned long _flags; unsigned int unique_id; + struct bin_attribute attr; }; #if defined(CONFIG_SPARC) @@ -56,8 +57,7 @@ struct device_node { 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; + struct kobject kobj; unsigned long _flags; void *data; #if defined(CONFIG_SPARC) @@ -67,13 +67,34 @@ struct device_node { #endif }; -#define MAX_PHANDLE_ARGS 8 +#define MAX_PHANDLE_ARGS 16 struct of_phandle_args { struct device_node *np; int args_count; uint32_t args[MAX_PHANDLE_ARGS]; }; +extern int of_node_add(struct device_node *node); + +/* 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); +} + +/* 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); @@ -114,6 +135,26 @@ 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); /* @@ -167,6 +208,8 @@ 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(dn) \ + for (dn = of_allnodes; dn; dn = dn->allnext) 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, @@ -198,6 +241,8 @@ extern struct device_node *of_find_node_with_property( 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); @@ -390,6 +435,12 @@ static inline struct device_node *of_find_compatible_node( 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) { @@ -536,6 +587,74 @@ static inline struct device_node *of_find_matching_node( } /** + * 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_bool - Findfrom a property * @np: device node from which the property value is to be read. * @propname: name of the property to be searched. @@ -633,14 +752,4 @@ static inline int of_get_available_child_count(const struct device_node *np) return num; } -#if defined(CONFIG_PROC_FS) && defined(CONFIG_PROC_DEVICETREE) -extern void proc_device_tree_add_node(struct device_node *, struct proc_dir_entry *); -extern void proc_device_tree_add_prop(struct proc_dir_entry *pde, struct property *prop); -extern void proc_device_tree_remove_prop(struct proc_dir_entry *pde, - struct property *prop); -extern void proc_device_tree_update_prop(struct proc_dir_entry *pde, - struct property *newprop, - struct property *oldprop); -#endif - #endif /* _LINUX_OF_H */ |