[linux-block.git] / include / linux / property.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * property.h - Unified device property interface.
 *
 * Copyright (C) 2014, Intel Corporation
 * Authors: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
 *          Mika Westerberg <mika.westerberg@linux.intel.com>
 */

#ifndef _LINUX_PROPERTY_H_
#define _LINUX_PROPERTY_H_

#include <linux/bits.h>
#include <linux/fwnode.h>
#include <linux/types.h>

struct device;

enum dev_prop_type {
	DEV_PROP_U8,
	DEV_PROP_U16,
	DEV_PROP_U32,
	DEV_PROP_U64,
	DEV_PROP_STRING,
	DEV_PROP_REF,
};

enum dev_dma_attr {
	DEV_DMA_NOT_SUPPORTED,
	DEV_DMA_NON_COHERENT,
	DEV_DMA_COHERENT,
};

struct fwnode_handle *dev_fwnode(struct device *dev);

bool device_property_present(struct device *dev, const char *propname);
int device_property_read_u8_array(struct device *dev, const char *propname,
				  u8 *val, size_t nval);
int device_property_read_u16_array(struct device *dev, const char *propname,
				   u16 *val, size_t nval);
int device_property_read_u32_array(struct device *dev, const char *propname,
				   u32 *val, size_t nval);
int device_property_read_u64_array(struct device *dev, const char *propname,
				   u64 *val, size_t nval);
int device_property_read_string_array(struct device *dev, const char *propname,
				      const char **val, size_t nval);
int device_property_read_string(struct device *dev, const char *propname,
				const char **val);
int device_property_match_string(struct device *dev,
				 const char *propname, const char *string);

bool fwnode_device_is_available(const struct fwnode_handle *fwnode);
bool fwnode_property_present(const struct fwnode_handle *fwnode,
			     const char *propname);
int fwnode_property_read_u8_array(const struct fwnode_handle *fwnode,
				  const char *propname, u8 *val,
				  size_t nval);
int fwnode_property_read_u16_array(const struct fwnode_handle *fwnode,
				   const char *propname, u16 *val,
				   size_t nval);
int fwnode_property_read_u32_array(const struct fwnode_handle *fwnode,
				   const char *propname, u32 *val,
				   size_t nval);
int fwnode_property_read_u64_array(const struct fwnode_handle *fwnode,
				   const char *propname, u64 *val,
				   size_t nval);
int fwnode_property_read_string_array(const struct fwnode_handle *fwnode,
				      const char *propname, const char **val,
				      size_t nval);
int fwnode_property_read_string(const struct fwnode_handle *fwnode,
				const char *propname, const char **val);
int fwnode_property_match_string(const struct fwnode_handle *fwnode,
				 const char *propname, const char *string);
int fwnode_property_get_reference_args(const struct fwnode_handle *fwnode,
				       const char *prop, const char *nargs_prop,
				       unsigned int nargs, unsigned int index,
				       struct fwnode_reference_args *args);

struct fwnode_handle *fwnode_find_reference(const struct fwnode_handle *fwnode,
					    const char *name,
					    unsigned int index);

const char *fwnode_get_name(const struct fwnode_handle *fwnode);
const char *fwnode_get_name_prefix(const struct fwnode_handle *fwnode);
struct fwnode_handle *fwnode_get_parent(const struct fwnode_handle *fwnode);
struct fwnode_handle *fwnode_get_next_parent(
	struct fwnode_handle *fwnode);
struct device *fwnode_get_next_parent_dev(struct fwnode_handle *fwnode);
unsigned int fwnode_count_parents(const struct fwnode_handle *fwn);
struct fwnode_handle *fwnode_get_nth_parent(struct fwnode_handle *fwn,
					    unsigned int depth);
bool fwnode_is_ancestor_of(struct fwnode_handle *test_ancestor,
				  struct fwnode_handle *test_child);
struct fwnode_handle *fwnode_get_next_child_node(
	const struct fwnode_handle *fwnode, struct fwnode_handle *child);
struct fwnode_handle *fwnode_get_next_available_child_node(
	const struct fwnode_handle *fwnode, struct fwnode_handle *child);

#define fwnode_for_each_child_node(fwnode, child)			\
	for (child = fwnode_get_next_child_node(fwnode, NULL); child;	\
	     child = fwnode_get_next_child_node(fwnode, child))

#define fwnode_for_each_available_child_node(fwnode, child)		       \
	for (child = fwnode_get_next_available_child_node(fwnode, NULL); child;\
	     child = fwnode_get_next_available_child_node(fwnode, child))

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))

struct fwnode_handle *fwnode_get_named_child_node(
	const struct fwnode_handle *fwnode, const char *childname);
struct fwnode_handle *device_get_named_child_node(struct device *dev,
						  const char *childname);

struct fwnode_handle *fwnode_handle_get(struct fwnode_handle *fwnode);
void fwnode_handle_put(struct fwnode_handle *fwnode);

int fwnode_irq_get(struct fwnode_handle *fwnode, unsigned int index);

unsigned int device_get_child_node_count(struct device *dev);

static inline bool device_property_read_bool(struct device *dev,
					     const char *propname)
{
	return device_property_present(dev, propname);
}

static inline int device_property_read_u8(struct device *dev,
					  const char *propname, u8 *val)
{
	return device_property_read_u8_array(dev, propname, val, 1);
}

static inline int device_property_read_u16(struct device *dev,
					   const char *propname, u16 *val)
{
	return device_property_read_u16_array(dev, propname, val, 1);
}

static inline int device_property_read_u32(struct device *dev,
					   const char *propname, u32 *val)
{
	return device_property_read_u32_array(dev, propname, val, 1);
}

static inline int device_property_read_u64(struct device *dev,
					   const char *propname, u64 *val)
{
	return device_property_read_u64_array(dev, propname, val, 1);
}

static inline int device_property_count_u8(struct device *dev, const char *propname)
{
	return device_property_read_u8_array(dev, propname, NULL, 0);
}

static inline int device_property_count_u16(struct device *dev, const char *propname)
{
	return device_property_read_u16_array(dev, propname, NULL, 0);
}

static inline int device_property_count_u32(struct device *dev, const char *propname)
{
	return device_property_read_u32_array(dev, propname, NULL, 0);
}

static inline int device_property_count_u64(struct device *dev, const char *propname)
{
	return device_property_read_u64_array(dev, propname, NULL, 0);
}

static inline int device_property_string_array_count(struct device *dev,
						     const char *propname)
{
	return device_property_read_string_array(dev, propname, NULL, 0);
}

static inline bool fwnode_property_read_bool(const struct fwnode_handle *fwnode,
					     const char *propname)
{
	return fwnode_property_present(fwnode, propname);
}

static inline int fwnode_property_read_u8(const 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(const 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(const 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(const struct fwnode_handle *fwnode,
					   const char *propname, u64 *val)
{
	return fwnode_property_read_u64_array(fwnode, propname, val, 1);
}

static inline int fwnode_property_count_u8(const struct fwnode_handle *fwnode,
					   const char *propname)
{
	return fwnode_property_read_u8_array(fwnode, propname, NULL, 0);
}

static inline int fwnode_property_count_u16(const struct fwnode_handle *fwnode,
					    const char *propname)
{
	return fwnode_property_read_u16_array(fwnode, propname, NULL, 0);
}

static inline int fwnode_property_count_u32(const struct fwnode_handle *fwnode,
					    const char *propname)
{
	return fwnode_property_read_u32_array(fwnode, propname, NULL, 0);
}

static inline int fwnode_property_count_u64(const struct fwnode_handle *fwnode,
					    const char *propname)
{
	return fwnode_property_read_u64_array(fwnode, propname, NULL, 0);
}

static inline int
fwnode_property_string_array_count(const struct fwnode_handle *fwnode,
				   const char *propname)
{
	return fwnode_property_read_string_array(fwnode, propname, NULL, 0);
}

struct software_node;

/**
 * struct software_node_ref_args - Reference property with additional arguments
 * @node: Reference to a software node
 * @nargs: Number of elements in @args array
 * @args: Integer arguments
 */
struct software_node_ref_args {
	const struct software_node *node;
	unsigned int nargs;
	u64 args[NR_FWNODE_REFERENCE_ARGS];
};

/**
 * struct property_entry - "Built-in" device property representation.
 * @name: Name of the property.
 * @length: Length of data making up the value.
 * @is_inline: True when the property value is stored inline.
 * @type: Type of the data in unions.
 * @pointer: Pointer to the property when it is not stored inline.
 * @value: Value of the property when it is stored inline.
 */
struct property_entry {
	const char *name;
	size_t length;
	bool is_inline;
	enum dev_prop_type type;
	union {
		const void *pointer;
		union {
			u8 u8_data[sizeof(u64) / sizeof(u8)];
			u16 u16_data[sizeof(u64) / sizeof(u16)];
			u32 u32_data[sizeof(u64) / sizeof(u32)];
			u64 u64_data[sizeof(u64) / sizeof(u64)];
			const char *str[sizeof(u64) / sizeof(char *)];
		} value;
	};
};

/*
 * Note: the below initializers for the anonymous union are carefully
 * crafted to avoid gcc-4.4.4's problems with initialization of anon unions
 * and structs.
 */

#define __PROPERTY_ENTRY_ELEMENT_SIZE(_elem_)				\
	sizeof(((struct property_entry *)NULL)->value._elem_[0])

#define __PROPERTY_ENTRY_ARRAY_ELSIZE_LEN(_name_, _elsize_, _Type_,	\
					  _val_, _len_)			\
(struct property_entry) {						\
	.name = _name_,							\
	.length = (_len_) * (_elsize_),					\
	.type = DEV_PROP_##_Type_,					\
	{ .pointer = _val_ },						\
}

#define __PROPERTY_ENTRY_ARRAY_LEN(_name_, _elem_, _Type_, _val_, _len_)\
	__PROPERTY_ENTRY_ARRAY_ELSIZE_LEN(_name_,			\
				__PROPERTY_ENTRY_ELEMENT_SIZE(_elem_),	\
				_Type_, _val_, _len_)

#define PROPERTY_ENTRY_U8_ARRAY_LEN(_name_, _val_, _len_)		\
	__PROPERTY_ENTRY_ARRAY_LEN(_name_, u8_data, U8, _val_, _len_)
#define PROPERTY_ENTRY_U16_ARRAY_LEN(_name_, _val_, _len_)		\
	__PROPERTY_ENTRY_ARRAY_LEN(_name_, u16_data, U16, _val_, _len_)
#define PROPERTY_ENTRY_U32_ARRAY_LEN(_name_, _val_, _len_)		\
	__PROPERTY_ENTRY_ARRAY_LEN(_name_, u32_data, U32, _val_, _len_)
#define PROPERTY_ENTRY_U64_ARRAY_LEN(_name_, _val_, _len_)		\
	__PROPERTY_ENTRY_ARRAY_LEN(_name_, u64_data, U64, _val_, _len_)
#define PROPERTY_ENTRY_STRING_ARRAY_LEN(_name_, _val_, _len_)		\
	__PROPERTY_ENTRY_ARRAY_LEN(_name_, str, STRING, _val_, _len_)
#define PROPERTY_ENTRY_REF_ARRAY_LEN(_name_, _val_, _len_)		\
	__PROPERTY_ENTRY_ARRAY_ELSIZE_LEN(_name_,			\
				sizeof(struct software_node_ref_args),	\
				REF, _val_, _len_)

#define PROPERTY_ENTRY_U8_ARRAY(_name_, _val_)				\
	PROPERTY_ENTRY_U8_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
#define PROPERTY_ENTRY_U16_ARRAY(_name_, _val_)				\
	PROPERTY_ENTRY_U16_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
#define PROPERTY_ENTRY_U32_ARRAY(_name_, _val_)				\
	PROPERTY_ENTRY_U32_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
#define PROPERTY_ENTRY_U64_ARRAY(_name_, _val_)				\
	PROPERTY_ENTRY_U64_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
#define PROPERTY_ENTRY_STRING_ARRAY(_name_, _val_)			\
	PROPERTY_ENTRY_STRING_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
#define PROPERTY_ENTRY_REF_ARRAY(_name_, _val_)			\
	PROPERTY_ENTRY_REF_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))

#define __PROPERTY_ENTRY_ELEMENT(_name_, _elem_, _Type_, _val_)		\
(struct property_entry) {						\
	.name = _name_,							\
	.length = __PROPERTY_ENTRY_ELEMENT_SIZE(_elem_),		\
	.is_inline = true,						\
	.type = DEV_PROP_##_Type_,					\
	{ .value = { ._elem_[0] = _val_ } },				\
}

#define PROPERTY_ENTRY_U8(_name_, _val_)				\
	__PROPERTY_ENTRY_ELEMENT(_name_, u8_data, U8, _val_)
#define PROPERTY_ENTRY_U16(_name_, _val_)				\
	__PROPERTY_ENTRY_ELEMENT(_name_, u16_data, U16, _val_)
#define PROPERTY_ENTRY_U32(_name_, _val_)				\
	__PROPERTY_ENTRY_ELEMENT(_name_, u32_data, U32, _val_)
#define PROPERTY_ENTRY_U64(_name_, _val_)				\
	__PROPERTY_ENTRY_ELEMENT(_name_, u64_data, U64, _val_)
#define PROPERTY_ENTRY_STRING(_name_, _val_)				\
	__PROPERTY_ENTRY_ELEMENT(_name_, str, STRING, _val_)

#define PROPERTY_ENTRY_BOOL(_name_)		\
(struct property_entry) {			\
	.name = _name_,				\
	.is_inline = true,			\
}

#define PROPERTY_ENTRY_REF(_name_, _ref_, ...)				\
(struct property_entry) {						\
	.name = _name_,							\
	.length = sizeof(struct software_node_ref_args),		\
	.type = DEV_PROP_REF,						\
	{ .pointer = &(const struct software_node_ref_args) {		\
		.node = _ref_,						\
		.nargs = ARRAY_SIZE(((u64[]){ 0, ##__VA_ARGS__ })) - 1,	\
		.args = { __VA_ARGS__ },				\
	} },								\
}

struct property_entry *
property_entries_dup(const struct property_entry *properties);

void property_entries_free(const struct property_entry *properties);

int device_add_properties(struct device *dev,
			  const struct property_entry *properties);
void device_remove_properties(struct device *dev);

bool device_dma_supported(struct device *dev);

enum dev_dma_attr device_get_dma_attr(struct device *dev);

const void *device_get_match_data(struct device *dev);

int device_get_phy_mode(struct device *dev);

void *device_get_mac_address(struct device *dev, char *addr, int alen);

int fwnode_get_phy_mode(struct fwnode_handle *fwnode);
void *fwnode_get_mac_address(struct fwnode_handle *fwnode,
			     char *addr, int alen);
struct fwnode_handle *fwnode_graph_get_next_endpoint(
	const struct fwnode_handle *fwnode, struct fwnode_handle *prev);
struct fwnode_handle *
fwnode_graph_get_port_parent(const struct fwnode_handle *fwnode);
struct fwnode_handle *fwnode_graph_get_remote_port_parent(
	const struct fwnode_handle *fwnode);
struct fwnode_handle *fwnode_graph_get_remote_port(
	const struct fwnode_handle *fwnode);
struct fwnode_handle *fwnode_graph_get_remote_endpoint(
	const struct fwnode_handle *fwnode);
struct fwnode_handle *
fwnode_graph_get_remote_node(const struct fwnode_handle *fwnode, u32 port,
			     u32 endpoint);

static inline bool fwnode_graph_is_endpoint(struct fwnode_handle *fwnode)
{
	return fwnode_property_present(fwnode, "remote-endpoint");
}

/*
 * Fwnode lookup flags
 *
 * @FWNODE_GRAPH_ENDPOINT_NEXT: In the case of no exact match, look for the
 *				closest endpoint ID greater than the specified
 *				one.
 * @FWNODE_GRAPH_DEVICE_DISABLED: That the device to which the remote
 *				  endpoint of the given endpoint belongs to,
 *				  may be disabled.
 */
#define FWNODE_GRAPH_ENDPOINT_NEXT	BIT(0)
#define FWNODE_GRAPH_DEVICE_DISABLED	BIT(1)

struct fwnode_handle *
fwnode_graph_get_endpoint_by_id(const struct fwnode_handle *fwnode,
				u32 port, u32 endpoint, unsigned long flags);

#define fwnode_graph_for_each_endpoint(fwnode, child)			\
	for (child = NULL;						\
	     (child = fwnode_graph_get_next_endpoint(fwnode, child)); )

int fwnode_graph_parse_endpoint(const struct fwnode_handle *fwnode,
				struct fwnode_endpoint *endpoint);

typedef void *(*devcon_match_fn_t)(struct fwnode_handle *fwnode, const char *id,
				   void *data);

void *fwnode_connection_find_match(struct fwnode_handle *fwnode,
				   const char *con_id, void *data,
				   devcon_match_fn_t match);

static inline void *device_connection_find_match(struct device *dev,
						 const char *con_id, void *data,
						 devcon_match_fn_t match)
{
	return fwnode_connection_find_match(dev_fwnode(dev), con_id, data, match);
}

/* -------------------------------------------------------------------------- */
/* Software fwnode support - when HW description is incomplete or missing */

/**
 * struct software_node - Software node description
 * @name: Name of the software node
 * @parent: Parent of the software node
 * @properties: Array of device properties
 */
struct software_node {
	const char *name;
	const struct software_node *parent;
	const struct property_entry *properties;
};

bool is_software_node(const struct fwnode_handle *fwnode);
const struct software_node *
to_software_node(const struct fwnode_handle *fwnode);
struct fwnode_handle *software_node_fwnode(const struct software_node *node);

const struct software_node *
software_node_find_by_name(const struct software_node *parent,
			   const char *name);

int software_node_register_nodes(const struct software_node *nodes);
void software_node_unregister_nodes(const struct software_node *nodes);

int software_node_register_node_group(const struct software_node **node_group);
void software_node_unregister_node_group(const struct software_node **node_group);

int software_node_register(const struct software_node *node);
void software_node_unregister(const struct software_node *node);

int software_node_notify(struct device *dev, unsigned long action);

struct fwnode_handle *
fwnode_create_software_node(const struct property_entry *properties,
			    const struct fwnode_handle *parent);
void fwnode_remove_software_node(struct fwnode_handle *fwnode);

#endif /* _LINUX_PROPERTY_H_ */
Commit	Line	Data
d2912cb1	1	/* SPDX-License-Identifier: GPL-2.0-only */
b31384fa RW	2	/*
	3	* property.h - Unified device property interface.
	4	*
	5	* Copyright (C) 2014, Intel Corporation
	6	* Authors: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
	7	* Mika Westerberg <mika.westerberg@linux.intel.com>
b31384fa RW	8	*/
	9
	10	#ifndef _LINUX_PROPERTY_H_
	11	#define _LINUX_PROPERTY_H_
	12
0fcc2bdc	13	#include <linux/bits.h>
ce793486	14	#include <linux/fwnode.h>
b31384fa RW	15	#include <linux/types.h>
	16
	17	struct device;
	18
	19	enum dev_prop_type {
	20	DEV_PROP_U8,
	21	DEV_PROP_U16,
	22	DEV_PROP_U32,
	23	DEV_PROP_U64,
	24	DEV_PROP_STRING,
e64b674b	25	DEV_PROP_REF,
b31384fa RW	26	};
b31384fa RW	27
1b9863c6 SS	28	enum dev_dma_attr {
	29	DEV_DMA_NOT_SUPPORTED,
	30	DEV_DMA_NON_COHERENT,
	31	DEV_DMA_COHERENT,
	32	};
	33
e44bb0cb SA	34	struct fwnode_handle dev_fwnode(struct device dev);
e44bb0cb SA	35
b31384fa RW	36	bool device_property_present(struct device dev, const char propname);
	37	int device_property_read_u8_array(struct device dev, const char propname,
	38	u8 *val, size_t nval);
	39	int device_property_read_u16_array(struct device dev, const char propname,
	40	u16 *val, size_t nval);
	41	int device_property_read_u32_array(struct device dev, const char propname,
	42	u32 *val, size_t nval);
	43	int device_property_read_u64_array(struct device dev, const char propname,
	44	u64 *val, size_t nval);
	45	int device_property_read_string_array(struct device dev, const char propname,
	46	const char **val, size_t nval);
	47	int device_property_read_string(struct device dev, const char propname,
	48	const char **val);
3f5c8d31 MW	49	int device_property_match_string(struct device *dev,
3f5c8d31 MW	50	const char propname, const char string);
b31384fa	51
37ba983c SA	52	bool fwnode_device_is_available(const struct fwnode_handle *fwnode);
	53	bool fwnode_property_present(const struct fwnode_handle *fwnode,
	54	const char *propname);
	55	int fwnode_property_read_u8_array(const struct fwnode_handle *fwnode,
8a0662d9 RW	56	const char propname, u8 val,
8a0662d9 RW	57	size_t nval);
37ba983c	58	int fwnode_property_read_u16_array(const struct fwnode_handle *fwnode,
8a0662d9 RW	59	const char propname, u16 val,
8a0662d9 RW	60	size_t nval);
37ba983c	61	int fwnode_property_read_u32_array(const struct fwnode_handle *fwnode,
8a0662d9 RW	62	const char propname, u32 val,
8a0662d9 RW	63	size_t nval);
37ba983c	64	int fwnode_property_read_u64_array(const struct fwnode_handle *fwnode,
8a0662d9 RW	65	const char propname, u64 val,
8a0662d9 RW	66	size_t nval);
37ba983c	67	int fwnode_property_read_string_array(const struct fwnode_handle *fwnode,
8a0662d9 RW	68	const char propname, const char *val,
8a0662d9 RW	69	size_t nval);
37ba983c	70	int fwnode_property_read_string(const struct fwnode_handle *fwnode,
8a0662d9	71	const char propname, const char *val);
37ba983c	72	int fwnode_property_match_string(const struct fwnode_handle *fwnode,
3f5c8d31	73	const char propname, const char string);
3e3119d3 SA	74	int fwnode_property_get_reference_args(const struct fwnode_handle *fwnode,
	75	const char prop, const char nargs_prop,
	76	unsigned int nargs, unsigned int index,
	77	struct fwnode_reference_args *args);
8a0662d9	78
83b34afb HK	79	struct fwnode_handle fwnode_find_reference(const struct fwnode_handle fwnode,
	80	const char *name,
	81	unsigned int index);
	82
bc0500c1	83	const char fwnode_get_name(const struct fwnode_handle fwnode);
e7e242bc	84	const char fwnode_get_name_prefix(const struct fwnode_handle fwnode);
37ba983c SA	85	struct fwnode_handle fwnode_get_parent(const struct fwnode_handle fwnode);
	86	struct fwnode_handle *fwnode_get_next_parent(
	87	struct fwnode_handle *fwnode);
b5d3e2fb	88	struct device fwnode_get_next_parent_dev(struct fwnode_handle fwnode);
87e5e95d SA	89	unsigned int fwnode_count_parents(const struct fwnode_handle *fwn);
	90	struct fwnode_handle fwnode_get_nth_parent(struct fwnode_handle fwn,
	91	unsigned int depth);
b5d3e2fb SK	92	bool fwnode_is_ancestor_of(struct fwnode_handle *test_ancestor,
b5d3e2fb SK	93	struct fwnode_handle *test_child);
37ba983c SA	94	struct fwnode_handle *fwnode_get_next_child_node(
37ba983c SA	95	const struct fwnode_handle fwnode, struct fwnode_handle child);
3395de96 MW	96	struct fwnode_handle *fwnode_get_next_available_child_node(
3395de96 MW	97	const struct fwnode_handle fwnode, struct fwnode_handle child);
34055190 MW	98
	99	#define fwnode_for_each_child_node(fwnode, child) \
	100	for (child = fwnode_get_next_child_node(fwnode, NULL); child; \
	101	child = fwnode_get_next_child_node(fwnode, child))
afaf26fd	102
3395de96 MW	103	#define fwnode_for_each_available_child_node(fwnode, child) \
	104	for (child = fwnode_get_next_available_child_node(fwnode, NULL); child;\
	105	child = fwnode_get_next_available_child_node(fwnode, child))
	106
37ba983c SA	107	struct fwnode_handle *device_get_next_child_node(
37ba983c SA	108	struct device dev, struct fwnode_handle child);
8a0662d9	109
1d656fb7 AS	110	#define device_for_each_child_node(dev, child) \
1d656fb7 AS	111	for (child = device_get_next_child_node(dev, NULL); child; \
8a0662d9 RW	112	child = device_get_next_child_node(dev, child))
8a0662d9 RW	113
37ba983c SA	114	struct fwnode_handle *fwnode_get_named_child_node(
37ba983c SA	115	const struct fwnode_handle fwnode, const char childname);
613e9721 AT	116	struct fwnode_handle device_get_named_child_node(struct device dev,
	117	const char *childname);
	118
cf89a31c	119	struct fwnode_handle fwnode_handle_get(struct fwnode_handle fwnode);
8a0662d9 RW	120	void fwnode_handle_put(struct fwnode_handle *fwnode);
8a0662d9 RW	121
7c6c57f2 MW	122	int fwnode_irq_get(struct fwnode_handle *fwnode, unsigned int index);
7c6c57f2 MW	123
8a0662d9 RW	124	unsigned int device_get_child_node_count(struct device *dev);
8a0662d9 RW	125
b31384fa RW	126	static inline bool device_property_read_bool(struct device *dev,
	127	const char *propname)
	128	{
	129	return device_property_present(dev, propname);
	130	}
	131
	132	static inline int device_property_read_u8(struct device *dev,
	133	const char propname, u8 val)
	134	{
	135	return device_property_read_u8_array(dev, propname, val, 1);
	136	}
	137
	138	static inline int device_property_read_u16(struct device *dev,
	139	const char propname, u16 val)
	140	{
	141	return device_property_read_u16_array(dev, propname, val, 1);
	142	}
	143
	144	static inline int device_property_read_u32(struct device *dev,
	145	const char propname, u32 val)
	146	{
	147	return device_property_read_u32_array(dev, propname, val, 1);
	148	}
	149
	150	static inline int device_property_read_u64(struct device *dev,
	151	const char propname, u64 val)
	152	{
	153	return device_property_read_u64_array(dev, propname, val, 1);
	154	}
	155
33ee09cd AS	156	static inline int device_property_count_u8(struct device dev, const char propname)
	157	{
	158	return device_property_read_u8_array(dev, propname, NULL, 0);
	159	}
	160
	161	static inline int device_property_count_u16(struct device dev, const char propname)
	162	{
	163	return device_property_read_u16_array(dev, propname, NULL, 0);
	164	}
	165
	166	static inline int device_property_count_u32(struct device dev, const char propname)
	167	{
	168	return device_property_read_u32_array(dev, propname, NULL, 0);
	169	}
	170
	171	static inline int device_property_count_u64(struct device dev, const char propname)
	172	{
	173	return device_property_read_u64_array(dev, propname, NULL, 0);
	174	}
	175
6b6ff4ac BG	176	static inline int device_property_string_array_count(struct device *dev,
	177	const char *propname)
	178	{
	179	return device_property_read_string_array(dev, propname, NULL, 0);
	180	}
	181
37ba983c	182	static inline bool fwnode_property_read_bool(const struct fwnode_handle *fwnode,
8a0662d9 RW	183	const char *propname)
	184	{
	185	return fwnode_property_present(fwnode, propname);
	186	}
	187
37ba983c	188	static inline int fwnode_property_read_u8(const struct fwnode_handle *fwnode,
8a0662d9 RW	189	const char propname, u8 val)
	190	{
	191	return fwnode_property_read_u8_array(fwnode, propname, val, 1);
	192	}
	193
37ba983c	194	static inline int fwnode_property_read_u16(const struct fwnode_handle *fwnode,
8a0662d9 RW	195	const char propname, u16 val)
	196	{
	197	return fwnode_property_read_u16_array(fwnode, propname, val, 1);
	198	}
	199
37ba983c	200	static inline int fwnode_property_read_u32(const struct fwnode_handle *fwnode,
8a0662d9 RW	201	const char propname, u32 val)
	202	{
	203	return fwnode_property_read_u32_array(fwnode, propname, val, 1);
	204	}
	205
37ba983c	206	static inline int fwnode_property_read_u64(const struct fwnode_handle *fwnode,
8a0662d9 RW	207	const char propname, u64 val)
	208	{
	209	return fwnode_property_read_u64_array(fwnode, propname, val, 1);
	210	}
	211
33ee09cd AS	212	static inline int fwnode_property_count_u8(const struct fwnode_handle *fwnode,
	213	const char *propname)
	214	{
	215	return fwnode_property_read_u8_array(fwnode, propname, NULL, 0);
	216	}
	217
	218	static inline int fwnode_property_count_u16(const struct fwnode_handle *fwnode,
	219	const char *propname)
	220	{
	221	return fwnode_property_read_u16_array(fwnode, propname, NULL, 0);
	222	}
	223
	224	static inline int fwnode_property_count_u32(const struct fwnode_handle *fwnode,
	225	const char *propname)
	226	{
	227	return fwnode_property_read_u32_array(fwnode, propname, NULL, 0);
	228	}
	229
	230	static inline int fwnode_property_count_u64(const struct fwnode_handle *fwnode,
	231	const char *propname)
	232	{
	233	return fwnode_property_read_u64_array(fwnode, propname, NULL, 0);
	234	}
	235
6b6ff4ac BG	236	static inline int
	237	fwnode_property_string_array_count(const struct fwnode_handle *fwnode,
	238	const char *propname)
	239	{
	240	return fwnode_property_read_string_array(fwnode, propname, NULL, 0);
	241	}
	242
e64b674b DT	243	struct software_node;
	244
	245	/**
	246	* struct software_node_ref_args - Reference property with additional arguments
	247	* @node: Reference to a software node
	248	* @nargs: Number of elements in @args array
	249	* @args: Integer arguments
	250	*/
	251	struct software_node_ref_args {
	252	const struct software_node *node;
	253	unsigned int nargs;
	254	u64 args[NR_FWNODE_REFERENCE_ARGS];
	255	};
	256
16ba08d5 RW	257	/**
	258	* struct property_entry - "Built-in" device property representation.
	259	* @name: Name of the property.
318a1971	260	* @length: Length of data making up the value.
e6bff466	261	* @is_inline: True when the property value is stored inline.
63dcc709	262	* @type: Type of the data in unions.
e6bff466 DT	263	* @pointer: Pointer to the property when it is not stored inline.
e6bff466 DT	264	* @value: Value of the property when it is stored inline.
16ba08d5 RW	265	*/
	266	struct property_entry {
	267	const char *name;
318a1971	268	size_t length;
e6bff466	269	bool is_inline;
63dcc709	270	enum dev_prop_type type;
16ba08d5	271	union {
1f74d70f	272	const void *pointer;
66586bab	273	union {
996b0830 DT	274	u8 u8_data[sizeof(u64) / sizeof(u8)];
	275	u16 u16_data[sizeof(u64) / sizeof(u16)];
	276	u32 u32_data[sizeof(u64) / sizeof(u32)];
	277	u64 u64_data[sizeof(u64) / sizeof(u64)];
	278	const char str[sizeof(u64) / sizeof(char )];
66586bab AS	279	} value;
66586bab AS	280	};
16ba08d5 RW	281	};
16ba08d5 RW	282
d76eebfa	283	/*
daeba9bf	284	* Note: the below initializers for the anonymous union are carefully
d76eebfa AM	285	* crafted to avoid gcc-4.4.4's problems with initialization of anon unions
	286	* and structs.
	287	*/
	288
daeba9bf	289	#define __PROPERTY_ENTRY_ELEMENT_SIZE(_elem_) \
996b0830	290	sizeof(((struct property_entry *)NULL)->value._elem_[0])
daeba9bf	291
e64b674b DT	292	#define __PROPERTY_ENTRY_ARRAY_ELSIZE_LEN(_name_, _elsize_, _Type_, \
e64b674b DT	293	_val_, _len_) \
63dcc709 AS	294	(struct property_entry) { \
63dcc709 AS	295	.name = _name_, \
e64b674b	296	.length = (_len_) * (_elsize_), \
63dcc709	297	.type = DEV_PROP_##_Type_, \
1f74d70f	298	{ .pointer = _val_ }, \
a85f4204 HK	299	}
a85f4204 HK	300
e64b674b DT	301	#define __PROPERTY_ENTRY_ARRAY_LEN(_name_, _elem_, _Type_, _val_, _len_)\
	302	__PROPERTY_ENTRY_ARRAY_ELSIZE_LEN(_name_, \
	303	__PROPERTY_ENTRY_ELEMENT_SIZE(_elem_), \
	304	_Type_, _val_, _len_)
	305
1741cfac	306	#define PROPERTY_ENTRY_U8_ARRAY_LEN(_name_, _val_, _len_) \
daeba9bf	307	__PROPERTY_ENTRY_ARRAY_LEN(_name_, u8_data, U8, _val_, _len_)
1741cfac	308	#define PROPERTY_ENTRY_U16_ARRAY_LEN(_name_, _val_, _len_) \
daeba9bf	309	__PROPERTY_ENTRY_ARRAY_LEN(_name_, u16_data, U16, _val_, _len_)
1741cfac	310	#define PROPERTY_ENTRY_U32_ARRAY_LEN(_name_, _val_, _len_) \
daeba9bf	311	__PROPERTY_ENTRY_ARRAY_LEN(_name_, u32_data, U32, _val_, _len_)
1741cfac	312	#define PROPERTY_ENTRY_U64_ARRAY_LEN(_name_, _val_, _len_) \
daeba9bf	313	__PROPERTY_ENTRY_ARRAY_LEN(_name_, u64_data, U64, _val_, _len_)
1741cfac	314	#define PROPERTY_ENTRY_STRING_ARRAY_LEN(_name_, _val_, _len_) \
daeba9bf	315	__PROPERTY_ENTRY_ARRAY_LEN(_name_, str, STRING, _val_, _len_)
e64b674b DT	316	#define PROPERTY_ENTRY_REF_ARRAY_LEN(_name_, _val_, _len_) \
	317	__PROPERTY_ENTRY_ARRAY_ELSIZE_LEN(_name_, \
	318	sizeof(struct software_node_ref_args), \
	319	REF, _val_, _len_)
a85f4204	320
1741cfac DT	321	#define PROPERTY_ENTRY_U8_ARRAY(_name_, _val_) \
	322	PROPERTY_ENTRY_U8_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
	323	#define PROPERTY_ENTRY_U16_ARRAY(_name_, _val_) \
	324	PROPERTY_ENTRY_U16_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
	325	#define PROPERTY_ENTRY_U32_ARRAY(_name_, _val_) \
	326	PROPERTY_ENTRY_U32_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
	327	#define PROPERTY_ENTRY_U64_ARRAY(_name_, _val_) \
	328	PROPERTY_ENTRY_U64_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
	329	#define PROPERTY_ENTRY_STRING_ARRAY(_name_, _val_) \
	330	PROPERTY_ENTRY_STRING_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
e64b674b DT	331	#define PROPERTY_ENTRY_REF_ARRAY(_name_, _val_) \
e64b674b DT	332	PROPERTY_ENTRY_REF_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
1741cfac	333
daeba9bf DT	334	#define __PROPERTY_ENTRY_ELEMENT(_name_, _elem_, _Type_, _val_) \
	335	(struct property_entry) { \
	336	.name = _name_, \
	337	.length = __PROPERTY_ENTRY_ELEMENT_SIZE(_elem_), \
e6bff466	338	.is_inline = true, \
daeba9bf	339	.type = DEV_PROP_##_Type_, \
996b0830	340	{ .value = { ._elem_[0] = _val_ } }, \
a85f4204 HK	341	}
a85f4204 HK	342
daeba9bf DT	343	#define PROPERTY_ENTRY_U8(_name_, _val_) \
	344	__PROPERTY_ENTRY_ELEMENT(_name_, u8_data, U8, _val_)
	345	#define PROPERTY_ENTRY_U16(_name_, _val_) \
	346	__PROPERTY_ENTRY_ELEMENT(_name_, u16_data, U16, _val_)
	347	#define PROPERTY_ENTRY_U32(_name_, _val_) \
	348	__PROPERTY_ENTRY_ELEMENT(_name_, u32_data, U32, _val_)
	349	#define PROPERTY_ENTRY_U64(_name_, _val_) \
	350	__PROPERTY_ENTRY_ELEMENT(_name_, u64_data, U64, _val_)
	351	#define PROPERTY_ENTRY_STRING(_name_, _val_) \
	352	__PROPERTY_ENTRY_ELEMENT(_name_, str, STRING, _val_)
a85f4204 HK	353
a85f4204 HK	354	#define PROPERTY_ENTRY_BOOL(_name_) \
c505cbd4	355	(struct property_entry) { \
a85f4204	356	.name = _name_, \
e6bff466	357	.is_inline = true, \
a85f4204 HK	358	}
a85f4204 HK	359
e64b674b DT	360	#define PROPERTY_ENTRY_REF(_name_, _ref_, ...) \
	361	(struct property_entry) { \
	362	.name = _name_, \
	363	.length = sizeof(struct software_node_ref_args), \
	364	.type = DEV_PROP_REF, \
	365	{ .pointer = &(const struct software_node_ref_args) { \
	366	.node = _ref_, \
	367	.nargs = ARRAY_SIZE(((u64[]){ 0, ##__VA_ARGS__ })) - 1, \
	368	.args = { __VA_ARGS__ }, \
	369	} }, \
	370	}
	371
2d479e1f DT	372	struct property_entry *
	373	property_entries_dup(const struct property_entry *properties);
	374
	375	void property_entries_free(const struct property_entry *properties);
	376
f4d05266	377	int device_add_properties(struct device *dev,
bec84da8	378	const struct property_entry *properties);
f4d05266	379	void device_remove_properties(struct device *dev);
16ba08d5	380
e5e55864 SS	381	bool device_dma_supported(struct device *dev);
	382
	383	enum dev_dma_attr device_get_dma_attr(struct device *dev);
b283f157	384
67dcc26d	385	const void device_get_match_data(struct device dev);
e5e55864	386
4c96b7dc JL	387	int device_get_phy_mode(struct device *dev);
	388
	389	void device_get_mac_address(struct device dev, char *addr, int alen);
	390
b28f263b	391	int fwnode_get_phy_mode(struct fwnode_handle *fwnode);
babe2dbb MW	392	void fwnode_get_mac_address(struct fwnode_handle fwnode,
babe2dbb MW	393	char *addr, int alen);
07bb80d4	394	struct fwnode_handle *fwnode_graph_get_next_endpoint(
37ba983c	395	const struct fwnode_handle fwnode, struct fwnode_handle prev);
6a71d8d7	396	struct fwnode_handle *
37ba983c	397	fwnode_graph_get_port_parent(const struct fwnode_handle *fwnode);
07bb80d4	398	struct fwnode_handle *fwnode_graph_get_remote_port_parent(
37ba983c	399	const struct fwnode_handle *fwnode);
07bb80d4	400	struct fwnode_handle *fwnode_graph_get_remote_port(
37ba983c	401	const struct fwnode_handle *fwnode);
07bb80d4	402	struct fwnode_handle *fwnode_graph_get_remote_endpoint(
37ba983c SA	403	const struct fwnode_handle *fwnode);
	404	struct fwnode_handle *
	405	fwnode_graph_get_remote_node(const struct fwnode_handle *fwnode, u32 port,
	406	u32 endpoint);
07bb80d4	407
35694afc LP	408	static inline bool fwnode_graph_is_endpoint(struct fwnode_handle *fwnode)
	409	{
	410	return fwnode_property_present(fwnode, "remote-endpoint");
	411	}
	412
0fcc2bdc SA	413	/*
	414	* Fwnode lookup flags
	415	*
	416	* @FWNODE_GRAPH_ENDPOINT_NEXT: In the case of no exact match, look for the
	417	* closest endpoint ID greater than the specified
	418	* one.
	419	* @FWNODE_GRAPH_DEVICE_DISABLED: That the device to which the remote
	420	* endpoint of the given endpoint belongs to,
	421	* may be disabled.
	422	*/
	423	#define FWNODE_GRAPH_ENDPOINT_NEXT BIT(0)
	424	#define FWNODE_GRAPH_DEVICE_DISABLED BIT(1)
	425
	426	struct fwnode_handle *
	427	fwnode_graph_get_endpoint_by_id(const struct fwnode_handle *fwnode,
	428	u32 port, u32 endpoint, unsigned long flags);
	429
5e4b1b70 SA	430	#define fwnode_graph_for_each_endpoint(fwnode, child) \
	431	for (child = NULL; \
	432	(child = fwnode_graph_get_next_endpoint(fwnode, child)); )
	433
37ba983c	434	int fwnode_graph_parse_endpoint(const struct fwnode_handle *fwnode,
2bd5452d SA	435	struct fwnode_endpoint *endpoint);
2bd5452d SA	436
d7cf5590 HK	437	typedef void (devcon_match_fn_t)(struct fwnode_handle fwnode, const char id,
	438	void *data);
	439
	440	void fwnode_connection_find_match(struct fwnode_handle fwnode,
	441	const char con_id, void data,
	442	devcon_match_fn_t match);
	443
	444	static inline void device_connection_find_match(struct device dev,
	445	const char con_id, void data,
	446	devcon_match_fn_t match)
	447	{
	448	return fwnode_connection_find_match(dev_fwnode(dev), con_id, data, match);
	449	}
	450
59abd836 HK	451	/* -------------------------------------------------------------------------- */
	452	/* Software fwnode support - when HW description is incomplete or missing */
	453
80488a6b HK	454	/**
	455	* struct software_node - Software node description
	456	* @name: Name of the software node
	457	* @parent: Parent of the software node
	458	* @properties: Array of device properties
	459	*/
	460	struct software_node {
	461	const char *name;
	462	const struct software_node *parent;
	463	const struct property_entry *properties;
	464	};
	465
59abd836	466	bool is_software_node(const struct fwnode_handle *fwnode);
56c9aa07 SA	467	const struct software_node *
56c9aa07 SA	468	to_software_node(const struct fwnode_handle *fwnode);
80488a6b HK	469	struct fwnode_handle software_node_fwnode(const struct software_node node);
80488a6b HK	470
1666faed HK	471	const struct software_node *
	472	software_node_find_by_name(const struct software_node *parent,
	473	const char *name);
	474
80488a6b HK	475	int software_node_register_nodes(const struct software_node *nodes);
	476	void software_node_unregister_nodes(const struct software_node *nodes);
	477
02094d54 AS	478	int software_node_register_node_group(const struct software_node **node_group);
	479	void software_node_unregister_node_group(const struct software_node **node_group);
	480
80488a6b	481	int software_node_register(const struct software_node *node);
46d26819	482	void software_node_unregister(const struct software_node *node);
59abd836 HK	483
	484	int software_node_notify(struct device *dev, unsigned long action);
	485
	486	struct fwnode_handle *
	487	fwnode_create_software_node(const struct property_entry *properties,
	488	const struct fwnode_handle *parent);
	489	void fwnode_remove_software_node(struct fwnode_handle *fwnode);
	490
b31384fa	491	#endif /* _LINUX_PROPERTY_H_ */