diff options
Diffstat (limited to 'include/linux')
-rw-r--r-- | include/linux/acpi.h | 26 | ||||
-rw-r--r-- | include/linux/of.h | 43 | ||||
-rw-r--r-- | include/linux/property.h | 70 |
3 files changed, 138 insertions, 1 deletions
diff --git a/include/linux/acpi.h b/include/linux/acpi.h index d0e959094c33..8f8c5ecec3a3 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -432,6 +432,23 @@ int acpi_device_modalias(struct device *, char *, int); #define ACPI_COMPANION_SET(dev, adev) do { } while (0) #define ACPI_HANDLE(dev) (NULL) +struct fwnode_handle; + +static inline bool is_acpi_node(struct fwnode_handle *fwnode) +{ + return false; +} + +static inline struct acpi_device *acpi_node(struct fwnode_handle *fwnode) +{ + return NULL; +} + +static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev) +{ + return NULL; +} + static inline const char *acpi_dev_name(struct acpi_device *adev) { return NULL; @@ -670,6 +687,9 @@ int acpi_dev_prop_read_single(struct acpi_device *adev, const char *propname, enum dev_prop_type proptype, void *val); int acpi_dev_prop_read(struct acpi_device *adev, const char *propname, enum dev_prop_type proptype, void *val, size_t nval); + +struct acpi_device *acpi_get_next_child(struct device *dev, + struct acpi_device *child); #else static inline int acpi_dev_get_property(struct acpi_device *adev, const char *name, acpi_object_type type, @@ -714,6 +734,12 @@ static inline int acpi_dev_prop_read(struct acpi_device *adev, return -ENXIO; } +static inline struct acpi_device *acpi_get_next_child(struct device *dev, + struct acpi_device *child) +{ + return NULL; +} + #endif #endif /*_LINUX_ACPI_H*/ diff --git a/include/linux/of.h b/include/linux/of.h index 42a5443091d1..ca34c3ca2613 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -49,6 +49,7 @@ struct device_node { const char *type; phandle phandle; const char *full_name; + struct fwnode_handle fwnode; struct property *properties; struct property *deadprops; /* removed properties */ @@ -75,6 +76,26 @@ struct of_phandle_args { uint32_t args[MAX_PHANDLE_ARGS]; }; +/* 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); @@ -95,6 +116,16 @@ extern struct device_node *of_chosen; extern struct device_node *of_aliases; extern raw_spinlock_t devtree_lock; +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_allnodes != NULL; @@ -310,7 +341,17 @@ int of_device_is_stdout_path(struct device_node *dn); #else /* CONFIG_OF */ -static inline const char* of_node_full_name(struct device_node *np) +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>"; } diff --git a/include/linux/property.h b/include/linux/property.h index 9242fb0221ba..a6a3d98bd7e9 100644 --- a/include/linux/property.h +++ b/include/linux/property.h @@ -40,6 +40,46 @@ int device_property_read_string_array(struct device *dev, const char *propname, int device_property_read_string(struct device *dev, const char *propname, const char **val); +enum fwnode_type { + FWNODE_INVALID = 0, + FWNODE_OF, + FWNODE_ACPI, +}; + +struct fwnode_handle { + enum fwnode_type type; +}; + +bool fwnode_property_present(struct fwnode_handle *fwnode, const char *propname); +int fwnode_property_read_u8_array(struct fwnode_handle *fwnode, + const char *propname, u8 *val, + size_t nval); +int fwnode_property_read_u16_array(struct fwnode_handle *fwnode, + const char *propname, u16 *val, + size_t nval); +int fwnode_property_read_u32_array(struct fwnode_handle *fwnode, + const char *propname, u32 *val, + size_t nval); +int fwnode_property_read_u64_array(struct fwnode_handle *fwnode, + const char *propname, u64 *val, + size_t nval); +int fwnode_property_read_string_array(struct fwnode_handle *fwnode, + const char *propname, const char **val, + size_t nval); +int fwnode_property_read_string(struct fwnode_handle *fwnode, + const char *propname, const char **val); + +struct fwnode_handle *device_get_next_child_node(struct device *dev, + struct fwnode_handle *child); + +#define device_for_each_child_node(dev, child) \ + for (child = device_get_next_child_node(dev, NULL); child; \ + child = device_get_next_child_node(dev, child)) + +void fwnode_handle_put(struct fwnode_handle *fwnode); + +unsigned int device_get_child_node_count(struct device *dev); + static inline bool device_property_read_bool(struct device *dev, const char *propname) { @@ -70,4 +110,34 @@ static inline int device_property_read_u64(struct device *dev, return device_property_read_u64_array(dev, propname, val, 1); } +static inline bool fwnode_property_read_bool(struct fwnode_handle *fwnode, + const char *propname) +{ + return fwnode_property_present(fwnode, propname); +} + +static inline int fwnode_property_read_u8(struct fwnode_handle *fwnode, + const char *propname, u8 *val) +{ + return fwnode_property_read_u8_array(fwnode, propname, val, 1); +} + +static inline int fwnode_property_read_u16(struct fwnode_handle *fwnode, + const char *propname, u16 *val) +{ + return fwnode_property_read_u16_array(fwnode, propname, val, 1); +} + +static inline int fwnode_property_read_u32(struct fwnode_handle *fwnode, + const char *propname, u32 *val) +{ + return fwnode_property_read_u32_array(fwnode, propname, val, 1); +} + +static inline int fwnode_property_read_u64(struct fwnode_handle *fwnode, + const char *propname, u64 *val) +{ + return fwnode_property_read_u64_array(fwnode, propname, val, 1); +} + #endif /* _LINUX_PROPERTY_H_ */ |