diff options
| -rw-r--r-- | drivers/of/base.c | 15 | ||||
| -rw-r--r-- | include/linux/of.h | 8 |
2 files changed, 23 insertions, 0 deletions
diff --git a/drivers/of/base.c b/drivers/of/base.c index 57420806c1a2..b70aec32e0e3 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -435,6 +435,21 @@ bool of_machine_compatible_match(const char *const *compats) EXPORT_SYMBOL(of_machine_compatible_match); /** + * of_machine_read_compatible - Get the compatible string of this machine + * @compatible: address at which the address of the compatible string will be + * stored + * @index: index of the compatible entry in the list + * + * Returns: + * 0 on success, negative error number on failure. + */ +int of_machine_read_compatible(const char **compatible, unsigned int index) +{ + return of_property_read_string_index(of_root, "compatible", index, compatible); +} +EXPORT_SYMBOL_GPL(of_machine_read_compatible); + +/** * of_machine_device_match - Test root of device tree against a of_device_id array * @matches: NULL terminated array of of_device_id match structures to search in * diff --git a/include/linux/of.h b/include/linux/of.h index be6ec4916adf..7df971d52b55 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -426,6 +426,8 @@ static inline bool of_machine_is_compatible(const char *compat) return of_machine_compatible_match(compats); } +int of_machine_read_compatible(const char **compatible, unsigned int index); + 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); @@ -851,6 +853,12 @@ static inline int of_machine_is_compatible(const char *compat) return 0; } +static inline int of_machine_read_compatible(const char **compatible, + unsigned int index) +{ + return -ENOSYS; +} + static inline int of_add_property(struct device_node *np, struct property *prop) { return 0; |