263 строки
7.8 KiB
C
263 строки
7.8 KiB
C
/*
|
|
* 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>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#ifndef _LINUX_PROPERTY_H_
|
|
#define _LINUX_PROPERTY_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_MAX,
|
|
};
|
|
|
|
enum dev_dma_attr {
|
|
DEV_DMA_NOT_SUPPORTED,
|
|
DEV_DMA_NON_COHERENT,
|
|
DEV_DMA_COHERENT,
|
|
};
|
|
|
|
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_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);
|
|
int fwnode_property_match_string(struct fwnode_handle *fwnode,
|
|
const char *propname, const char *string);
|
|
|
|
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)
|
|
{
|
|
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 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);
|
|
}
|
|
|
|
/**
|
|
* struct property_entry - "Built-in" device property representation.
|
|
* @name: Name of the property.
|
|
* @length: Length of data making up the value.
|
|
* @is_array: True when the property is an array.
|
|
* @is_string: True when property is a string.
|
|
* @pointer: Pointer to the property (an array of items of the given type).
|
|
* @value: Value of the property (when it is a single item of the given type).
|
|
*/
|
|
struct property_entry {
|
|
const char *name;
|
|
size_t length;
|
|
bool is_array;
|
|
bool is_string;
|
|
union {
|
|
union {
|
|
void *raw_data;
|
|
u8 *u8_data;
|
|
u16 *u16_data;
|
|
u32 *u32_data;
|
|
u64 *u64_data;
|
|
const char **str;
|
|
} pointer;
|
|
union {
|
|
unsigned long long raw_data;
|
|
u8 u8_data;
|
|
u16 u16_data;
|
|
u32 u32_data;
|
|
u64 u64_data;
|
|
const char *str;
|
|
} value;
|
|
};
|
|
};
|
|
|
|
/*
|
|
* Note: the below four 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_INTEGER_ARRAY(_name_, _type_, _val_) \
|
|
{ \
|
|
.name = _name_, \
|
|
.length = ARRAY_SIZE(_val_) * sizeof(_type_), \
|
|
.is_array = true, \
|
|
.is_string = false, \
|
|
{ .pointer = { _type_##_data = _val_ } }, \
|
|
}
|
|
|
|
#define PROPERTY_ENTRY_U8_ARRAY(_name_, _val_) \
|
|
PROPERTY_ENTRY_INTEGER_ARRAY(_name_, u8, _val_)
|
|
#define PROPERTY_ENTRY_U16_ARRAY(_name_, _val_) \
|
|
PROPERTY_ENTRY_INTEGER_ARRAY(_name_, u16, _val_)
|
|
#define PROPERTY_ENTRY_U32_ARRAY(_name_, _val_) \
|
|
PROPERTY_ENTRY_INTEGER_ARRAY(_name_, u32, _val_)
|
|
#define PROPERTY_ENTRY_U64_ARRAY(_name_, _val_) \
|
|
PROPERTY_ENTRY_INTEGER_ARRAY(_name_, u64, _val_)
|
|
|
|
#define PROPERTY_ENTRY_STRING_ARRAY(_name_, _val_) \
|
|
{ \
|
|
.name = _name_, \
|
|
.length = ARRAY_SIZE(_val_) * sizeof(const char *), \
|
|
.is_array = true, \
|
|
.is_string = true, \
|
|
{ .pointer = { .str = _val_ } }, \
|
|
}
|
|
|
|
#define PROPERTY_ENTRY_INTEGER(_name_, _type_, _val_) \
|
|
{ \
|
|
.name = _name_, \
|
|
.length = sizeof(_type_), \
|
|
.is_string = false, \
|
|
{ .value = { ._type_##_data = _val_ } }, \
|
|
}
|
|
|
|
#define PROPERTY_ENTRY_U8(_name_, _val_) \
|
|
PROPERTY_ENTRY_INTEGER(_name_, u8, _val_)
|
|
#define PROPERTY_ENTRY_U16(_name_, _val_) \
|
|
PROPERTY_ENTRY_INTEGER(_name_, u16, _val_)
|
|
#define PROPERTY_ENTRY_U32(_name_, _val_) \
|
|
PROPERTY_ENTRY_INTEGER(_name_, u32, _val_)
|
|
#define PROPERTY_ENTRY_U64(_name_, _val_) \
|
|
PROPERTY_ENTRY_INTEGER(_name_, u64, _val_)
|
|
|
|
#define PROPERTY_ENTRY_STRING(_name_, _val_) \
|
|
{ \
|
|
.name = _name_, \
|
|
.length = sizeof(_val_), \
|
|
.is_string = true, \
|
|
{ .value = { .str = _val_ } }, \
|
|
}
|
|
|
|
#define PROPERTY_ENTRY_BOOL(_name_) \
|
|
{ \
|
|
.name = _name_, \
|
|
}
|
|
|
|
/**
|
|
* struct property_set - Collection of "built-in" device properties.
|
|
* @fwnode: Handle to be pointed to by the fwnode field of struct device.
|
|
* @properties: Array of properties terminated with a null entry.
|
|
*/
|
|
struct property_set {
|
|
struct fwnode_handle fwnode;
|
|
struct property_entry *properties;
|
|
};
|
|
|
|
int device_add_property_set(struct device *dev, const struct property_set *pset);
|
|
void device_remove_property_set(struct device *dev);
|
|
|
|
bool device_dma_supported(struct device *dev);
|
|
|
|
enum dev_dma_attr device_get_dma_attr(struct device *dev);
|
|
|
|
int device_get_phy_mode(struct device *dev);
|
|
|
|
void *device_get_mac_address(struct device *dev, char *addr, int alen);
|
|
|
|
#endif /* _LINUX_PROPERTY_H_ */
|