Release 4.11 drivers/base/property.c
/*
* property.c - 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.
*/
#include <linux/acpi.h>
#include <linux/export.h>
#include <linux/kernel.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/property.h>
#include <linux/etherdevice.h>
#include <linux/phy.h>
struct property_set {
struct fwnode_handle fwnode;
const struct property_entry *properties;
};
static inline bool is_pset_node(struct fwnode_handle *fwnode)
{
return !IS_ERR_OR_NULL(fwnode) && fwnode->type == FWNODE_PDATA;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 20 | 80.00% | 1 | 33.33% |
| Heikki Krogerus | 4 | 16.00% | 1 | 33.33% |
| Andy Shevchenko | 1 | 4.00% | 1 | 33.33% |
| Total | 25 | 100.00% | 3 | 100.00% |
static inline struct property_set *to_pset_node(struct fwnode_handle *fwnode)
{
return is_pset_node(fwnode) ?
container_of(fwnode, struct property_set, fwnode) : NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 30 | 93.75% | 1 | 50.00% |
| Andy Shevchenko | 2 | 6.25% | 1 | 50.00% |
| Total | 32 | 100.00% | 2 | 100.00% |
static const struct property_entry *pset_prop_get(struct property_set *pset,
const char *name)
{
const struct property_entry *prop;
if (!pset || !pset->properties)
return NULL;
for (prop = pset->properties; prop->name; prop++)
if (!strcmp(name, prop->name))
return prop;
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 69 | 97.18% | 1 | 50.00% |
| Dmitry Torokhov | 2 | 2.82% | 1 | 50.00% |
| Total | 71 | 100.00% | 2 | 100.00% |
static const void *pset_prop_find(struct property_set *pset,
const char *propname, size_t length)
{
const struct property_entry *prop;
const void *pointer;
prop = pset_prop_get(pset, propname);
if (!prop)
return ERR_PTR(-EINVAL);
if (prop->is_array)
pointer = prop->pointer.raw_data;
else
pointer = &prop->value.raw_data;
if (!pointer)
return ERR_PTR(-ENODATA);
if (length > prop->length)
return ERR_PTR(-EOVERFLOW);
return pointer;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 53 | 49.53% | 1 | 25.00% |
| Andy Shevchenko | 51 | 47.66% | 2 | 50.00% |
| Dmitry Torokhov | 3 | 2.80% | 1 | 25.00% |
| Total | 107 | 100.00% | 4 | 100.00% |
static int pset_prop_read_u8_array(struct property_set *pset,
const char *propname,
u8 *values, size_t nval)
{
const void *pointer;
size_t length = nval * sizeof(*values);
pointer = pset_prop_find(pset, propname, length);
if (IS_ERR(pointer))
return PTR_ERR(pointer);
memcpy(values, pointer, length);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andy Shevchenko | 72 | 96.00% | 1 | 33.33% |
| Rafael J. Wysocki | 2 | 2.67% | 1 | 33.33% |
| Dmitry Torokhov | 1 | 1.33% | 1 | 33.33% |
| Total | 75 | 100.00% | 3 | 100.00% |
static int pset_prop_read_u16_array(struct property_set *pset,
const char *propname,
u16 *values, size_t nval)
{
const void *pointer;
size_t length = nval * sizeof(*values);
pointer = pset_prop_find(pset, propname, length);
if (IS_ERR(pointer))
return PTR_ERR(pointer);
memcpy(values, pointer, length);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andy Shevchenko | 63 | 84.00% | 1 | 33.33% |
| Rafael J. Wysocki | 11 | 14.67% | 1 | 33.33% |
| Dmitry Torokhov | 1 | 1.33% | 1 | 33.33% |
| Total | 75 | 100.00% | 3 | 100.00% |
static int pset_prop_read_u32_array(struct property_set *pset,
const char *propname,
u32 *values, size_t nval)
{
const void *pointer;
size_t length = nval * sizeof(*values);
pointer = pset_prop_find(pset, propname, length);
if (IS_ERR(pointer))
return PTR_ERR(pointer);
memcpy(values, pointer, length);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andy Shevchenko | 69 | 92.00% | 1 | 33.33% |
| Rafael J. Wysocki | 5 | 6.67% | 1 | 33.33% |
| Dmitry Torokhov | 1 | 1.33% | 1 | 33.33% |
| Total | 75 | 100.00% | 3 | 100.00% |
static int pset_prop_read_u64_array(struct property_set *pset,
const char *propname,
u64 *values, size_t nval)
{
const void *pointer;
size_t length = nval * sizeof(*values);
pointer = pset_prop_find(pset, propname, length);
if (IS_ERR(pointer))
return PTR_ERR(pointer);
memcpy(values, pointer, length);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andy Shevchenko | 64 | 85.33% | 1 | 33.33% |
| Rafael J. Wysocki | 10 | 13.33% | 1 | 33.33% |
| Dmitry Torokhov | 1 | 1.33% | 1 | 33.33% |
| Total | 75 | 100.00% | 3 | 100.00% |
static int pset_prop_count_elems_of_size(struct property_set *pset,
const char *propname, size_t length)
{
const struct property_entry *prop;
prop = pset_prop_get(pset, propname);
if (!prop)
return -EINVAL;
return prop->length / length;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andy Shevchenko | 47 | 94.00% | 1 | 33.33% |
| Rafael J. Wysocki | 2 | 4.00% | 1 | 33.33% |
| Dmitry Torokhov | 1 | 2.00% | 1 | 33.33% |
| Total | 50 | 100.00% | 3 | 100.00% |
static int pset_prop_read_string_array(struct property_set *pset,
const char *propname,
const char **strings, size_t nval)
{
const void *pointer;
size_t length = nval * sizeof(*strings);
pointer = pset_prop_find(pset, propname, length);
if (IS_ERR(pointer))
return PTR_ERR(pointer);
memcpy(strings, pointer, length);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andy Shevchenko | 68 | 88.31% | 1 | 33.33% |
| Rafael J. Wysocki | 8 | 10.39% | 1 | 33.33% |
| Dmitry Torokhov | 1 | 1.30% | 1 | 33.33% |
| Total | 77 | 100.00% | 3 | 100.00% |
static int pset_prop_read_string(struct property_set *pset,
const char *propname, const char **strings)
{
const struct property_entry *prop;
const char * const *pointer;
prop = pset_prop_get(pset, propname);
if (!prop)
return -EINVAL;
if (!prop->is_string)
return -EILSEQ;
if (prop->is_array) {
pointer = prop->pointer.str;
if (!pointer)
return -ENODATA;
} else {
pointer = &prop->value.str;
if (*pointer && strnlen(*pointer, prop->length) >= prop->length)
return -EILSEQ;
}
*strings = *pointer;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andy Shevchenko | 131 | 98.50% | 1 | 50.00% |
| Dmitry Torokhov | 2 | 1.50% | 1 | 50.00% |
| Total | 133 | 100.00% | 2 | 100.00% |
static inline struct fwnode_handle *dev_fwnode(struct device *dev)
{
return IS_ENABLED(CONFIG_OF) && dev->of_node ?
&dev->of_node->fwnode : dev->fwnode;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 35 | 100.00% | 2 | 100.00% |
| Total | 35 | 100.00% | 2 | 100.00% |
/**
* device_property_present - check if a property of a device is present
* @dev: Device whose property is being checked
* @propname: Name of the property
*
* Check if property @propname is present in the device firmware description.
*/
bool device_property_present(struct device *dev, const char *propname)
{
return fwnode_property_present(dev_fwnode(dev), propname);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 26 | 100.00% | 2 | 100.00% |
| Total | 26 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL_GPL(device_property_present);
static bool __fwnode_property_present(struct fwnode_handle *fwnode,
const char *propname)
{
if (is_of_node(fwnode))
return of_property_read_bool(to_of_node(fwnode), propname);
else if (is_acpi_node(fwnode))
return !acpi_node_prop_get(fwnode, propname, NULL);
else if (is_pset_node(fwnode))
return !!pset_prop_get(to_pset_node(fwnode), propname);
return false;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 62 | 80.52% | 3 | 42.86% |
| Andy Shevchenko | 14 | 18.18% | 3 | 42.86% |
| Alexander Sverdlin | 1 | 1.30% | 1 | 14.29% |
| Total | 77 | 100.00% | 7 | 100.00% |
/**
* fwnode_property_present - check if a property of a firmware node is present
* @fwnode: Firmware node whose property to check
* @propname: Name of the property
*/
bool fwnode_property_present(struct fwnode_handle *fwnode, const char *propname)
{
bool ret;
ret = __fwnode_property_present(fwnode, propname);
if (ret == false && !IS_ERR_OR_NULL(fwnode) &&
!IS_ERR_OR_NULL(fwnode->secondary))
ret = __fwnode_property_present(fwnode->secondary, propname);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andy Shevchenko | 51 | 83.61% | 1 | 25.00% |
| Heikki Krogerus | 10 | 16.39% | 3 | 75.00% |
| Total | 61 | 100.00% | 4 | 100.00% |
EXPORT_SYMBOL_GPL(fwnode_property_present);
/**
* device_property_read_u8_array - return a u8 array property of a device
* @dev: Device to get the property of
* @propname: Name of the property
* @val: The values are stored here or %NULL to return the number of values
* @nval: Size of the @val array
*
* Function reads an array of u8 properties with @propname from the device
* firmware description and stores them to @val if found.
*
* Return: number of values if @val was %NULL,
* %0 if the property was found (success),
* %-EINVAL if given arguments are not valid,
* %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of numbers,
* %-EOVERFLOW if the size of the property is not as expected.
* %-ENXIO if no suitable firmware interface is present.
*/
int device_property_read_u8_array(struct device *dev, const char *propname,
u8 *val, size_t nval)
{
return fwnode_property_read_u8_array(dev_fwnode(dev), propname, val, nval);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 37 | 100.00% | 2 | 100.00% |
| Total | 37 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL_GPL(device_property_read_u8_array);
/**
* device_property_read_u16_array - return a u16 array property of a device
* @dev: Device to get the property of
* @propname: Name of the property
* @val: The values are stored here or %NULL to return the number of values
* @nval: Size of the @val array
*
* Function reads an array of u16 properties with @propname from the device
* firmware description and stores them to @val if found.
*
* Return: number of values if @val was %NULL,
* %0 if the property was found (success),
* %-EINVAL if given arguments are not valid,
* %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of numbers,
* %-EOVERFLOW if the size of the property is not as expected.
* %-ENXIO if no suitable firmware interface is present.
*/
int device_property_read_u16_array(struct device *dev, const char *propname,
u16 *val, size_t nval)
{
return fwnode_property_read_u16_array(dev_fwnode(dev), propname, val, nval);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 37 | 100.00% | 2 | 100.00% |
| Total | 37 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL_GPL(device_property_read_u16_array);
/**
* device_property_read_u32_array - return a u32 array property of a device
* @dev: Device to get the property of
* @propname: Name of the property
* @val: The values are stored here or %NULL to return the number of values
* @nval: Size of the @val array
*
* Function reads an array of u32 properties with @propname from the device
* firmware description and stores them to @val if found.
*
* Return: number of values if @val was %NULL,
* %0 if the property was found (success),
* %-EINVAL if given arguments are not valid,
* %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of numbers,
* %-EOVERFLOW if the size of the property is not as expected.
* %-ENXIO if no suitable firmware interface is present.
*/
int device_property_read_u32_array(struct device *dev, const char *propname,
u32 *val, size_t nval)
{
return fwnode_property_read_u32_array(dev_fwnode(dev), propname, val, nval);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 37 | 100.00% | 2 | 100.00% |
| Total | 37 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL_GPL(device_property_read_u32_array);
/**
* device_property_read_u64_array - return a u64 array property of a device
* @dev: Device to get the property of
* @propname: Name of the property
* @val: The values are stored here or %NULL to return the number of values
* @nval: Size of the @val array
*
* Function reads an array of u64 properties with @propname from the device
* firmware description and stores them to @val if found.
*
* Return: number of values if @val was %NULL,
* %0 if the property was found (success),
* %-EINVAL if given arguments are not valid,
* %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of numbers,
* %-EOVERFLOW if the size of the property is not as expected.
* %-ENXIO if no suitable firmware interface is present.
*/
int device_property_read_u64_array(struct device *dev, const char *propname,
u64 *val, size_t nval)
{
return fwnode_property_read_u64_array(dev_fwnode(dev), propname, val, nval);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 37 | 100.00% | 2 | 100.00% |
| Total | 37 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL_GPL(device_property_read_u64_array);
/**
* device_property_read_string_array - return a string array property of device
* @dev: Device to get the property of
* @propname: Name of the property
* @val: The values are stored here or %NULL to return the number of values
* @nval: Size of the @val array
*
* Function reads an array of string properties with @propname from the device
* firmware description and stores them to @val if found.
*
* Return: number of values if @val was %NULL,
* %0 if the property was found (success),
* %-EINVAL if given arguments are not valid,
* %-ENODATA if the property does not have a value,
* %-EPROTO or %-EILSEQ if the property is not an array of strings,
* %-EOVERFLOW if the size of the property is not as expected.
* %-ENXIO if no suitable firmware interface is present.
*/
int device_property_read_string_array(struct device *dev, const char *propname,
const char **val, size_t nval)
{
return fwnode_property_read_string_array(dev_fwnode(dev), propname, val, nval);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 39 | 100.00% | 2 | 100.00% |
| Total | 39 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL_GPL(device_property_read_string_array);
/**
* device_property_read_string - return a string property of a device
* @dev: Device to get the property of
* @propname: Name of the property
* @val: The value is stored here
*
* Function reads property @propname from the device firmware description and
* stores the value into @val if found. The value is checked to be a string.
*
* Return: %0 if the property was found (success),
* %-EINVAL if given arguments are not valid,
* %-ENODATA if the property does not have a value,
* %-EPROTO or %-EILSEQ if the property type is not a string.
* %-ENXIO if no suitable firmware interface is present.
*/
int device_property_read_string(struct device *dev, const char *propname,
const char **val)
{
return fwnode_property_read_string(dev_fwnode(dev), propname, val);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 34 | 100.00% | 2 | 100.00% |
| Total | 34 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL_GPL(device_property_read_string);
/**
* device_property_match_string - find a string in an array and return index
* @dev: Device to get the property of
* @propname: Name of the property holding the array
* @string: String to look for
*
* Find a given string in a string array and if it is found return the
* index back.
*
* Return: %0 if the property was found (success),
* %-EINVAL if given arguments are not valid,
* %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of strings,
* %-ENXIO if no suitable firmware interface is present.
*/
int device_property_match_string(struct device *dev, const char *propname,
const char *string)
{
return fwnode_property_match_string(dev_fwnode(dev), propname, string);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Mika Westerberg | 33 | 100.00% | 1 | 100.00% |
| Total | 33 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(device_property_match_string);
#define OF_DEV_PROP_READ_ARRAY(node, propname, type, val, nval) \
(val) ? of_property_read_##type##_array((node), (propname), (val), (nval)) \
: of_property_count_elems_of_size((node), (propname), sizeof(type))
#define PSET_PROP_READ_ARRAY(node, propname, type, val, nval) \
(val) ? pset_prop_read_##type##_array((node), (propname), (val), (nval)) \
: pset_prop_count_elems_of_size((node), (propname), sizeof(type))
#define FWNODE_PROP_READ(_fwnode_, _propname_, _type_, _proptype_, _val_, _nval_) \
({ \
int _ret_; \
if (is_of_node(_fwnode_)) \
_ret_ = OF_DEV_PROP_READ_ARRAY(to_of_node(_fwnode_), _propname_, \
_type_, _val_, _nval_); \
else if (is_acpi_node(_fwnode_)) \
_ret_ = acpi_node_prop_read(_fwnode_, _propname_, _proptype_, \
_val_, _nval_); \
else if (is_pset_node(_fwnode_)) \
_ret_ = PSET_PROP_READ_ARRAY(to_pset_node(_fwnode_), _propname_, \
_type_, _val_, _nval_); \
else \
_ret_ = -ENXIO; \
_ret_; \
})
#define FWNODE_PROP_READ_ARRAY(_fwnode_, _propname_, _type_, _proptype_, _val_, _nval_) \
({ \
int _ret_; \
_ret_ = FWNODE_PROP_READ(_fwnode_, _propname_, _type_, _proptype_, \
_val_, _nval_); \
if (_ret_ == -EINVAL && !IS_ERR_OR_NULL(_fwnode_) && \
!IS_ERR_OR_NULL(_fwnode_->secondary)) \
_ret_ = FWNODE_PROP_READ(_fwnode_->secondary, _propname_, _type_, \
_proptype_, _val_, _nval_); \
_ret_; \
})
/**
* fwnode_property_read_u8_array - return a u8 array property of firmware node
* @fwnode: Firmware node to get the property of
* @propname: Name of the property
* @val: The values are stored here or %NULL to return the number of values
* @nval: Size of the @val array
*
* Read an array of u8 properties with @propname from @fwnode and stores them to
* @val if found.
*
* Return: number of values if @val was %NULL,
* %0 if the property was found (success),
* %-EINVAL if given arguments are not valid,
* %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of numbers,
* %-EOVERFLOW if the size of the property is not as expected,
* %-ENXIO if no suitable firmware interface is present.
*/
int fwnode_property_read_u8_array(struct fwnode_handle *fwnode,
const char *propname, u8 *val, size_t nval)
{
return FWNODE_PROP_READ_ARRAY(fwnode, propname, u8, DEV_PROP_U8,
val, nval);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 38 | 100.00% | 1 | 100.00% |
| Total | 38 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(fwnode_property_read_u8_array);
/**
* fwnode_property_read_u16_array - return a u16 array property of firmware node
* @fwnode: Firmware node to get the property of
* @propname: Name of the property
* @val: The values are stored here or %NULL to return the number of values
* @nval: Size of the @val array
*
* Read an array of u16 properties with @propname from @fwnode and store them to
* @val if found.
*
* Return: number of values if @val was %NULL,
* %0 if the property was found (success),
* %-EINVAL if given arguments are not valid,
* %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of numbers,
* %-EOVERFLOW if the size of the property is not as expected,
* %-ENXIO if no suitable firmware interface is present.
*/
int fwnode_property_read_u16_array(struct fwnode_handle *fwnode,
const char *propname, u16 *val, size_t nval)
{
return FWNODE_PROP_READ_ARRAY(fwnode, propname, u16, DEV_PROP_U16,
val, nval);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 38 | 100.00% | 1 | 100.00% |
| Total | 38 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(fwnode_property_read_u16_array);
/**
* fwnode_property_read_u32_array - return a u32 array property of firmware node
* @fwnode: Firmware node to get the property of
* @propname: Name of the property
* @val: The values are stored here or %NULL to return the number of values
* @nval: Size of the @val array
*
* Read an array of u32 properties with @propname from @fwnode store them to
* @val if found.
*
* Return: number of values if @val was %NULL,
* %0 if the property was found (success),
* %-EINVAL if given arguments are not valid,
* %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of numbers,
* %-EOVERFLOW if the size of the property is not as expected,
* %-ENXIO if no suitable firmware interface is present.
*/
int fwnode_property_read_u32_array(struct fwnode_handle *fwnode,
const char *propname, u32 *val, size_t nval)
{
return FWNODE_PROP_READ_ARRAY(fwnode, propname, u32, DEV_PROP_U32,
val, nval);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 38 | 100.00% | 1 | 100.00% |
| Total | 38 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(fwnode_property_read_u32_array);
/**
* fwnode_property_read_u64_array - return a u64 array property firmware node
* @fwnode: Firmware node to get the property of
* @propname: Name of the property
* @val: The values are stored here or %NULL to return the number of values
* @nval: Size of the @val array
*
* Read an array of u64 properties with @propname from @fwnode and store them to
* @val if found.
*
* Return: number of values if @val was %NULL,
* %0 if the property was found (success),
* %-EINVAL if given arguments are not valid,
* %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of numbers,
* %-EOVERFLOW if the size of the property is not as expected,
* %-ENXIO if no suitable firmware interface is present.
*/
int fwnode_property_read_u64_array(struct fwnode_handle *fwnode,
const char *propname, u64 *val, size_t nval)
{
return FWNODE_PROP_READ_ARRAY(fwnode, propname, u64, DEV_PROP_U64,
val, nval);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 38 | 100.00% | 1 | 100.00% |
| Total | 38 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(fwnode_property_read_u64_array);
static int __fwnode_property_read_string_array(struct fwnode_handle *fwnode,
const char *propname,
const char **val, size_t nval)
{
if (is_of_node(fwnode))
return val ?
of_property_read_string_array(to_of_node(fwnode),
propname, val, nval) :
of_property_count_strings(to_of_node(fwnode), propname);
else if (is_acpi_node(fwnode))
return acpi_node_prop_read(fwnode, propname, DEV_PROP_STRING,
val, nval);
else if (is_pset_node(fwnode))
return val ?
pset_prop_read_string_array(to_pset_node(fwnode),
propname, val, nval) :
pset_prop_count_elems_of_size(to_pset_node(fwnode),
propname,
sizeof(const char *));
return -ENXIO;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 90 | 70.87% | 4 | 44.44% |
| Andy Shevchenko | 24 | 18.90% | 3 | 33.33% |
| Guenter Roeck | 11 | 8.66% | 1 | 11.11% |
| Alexander Sverdlin | 2 | 1.57% | 1 | 11.11% |
| Total | 127 | 100.00% | 9 | 100.00% |
static int __fwnode_property_read_string(struct fwnode_handle *fwnode,
const char *propname, const char **val)
{
if (is_of_node(fwnode))
return of_property_read_string(to_of_node(fwnode), propname, val);
else if (is_acpi_node(fwnode))
return acpi_node_prop_read(fwnode, propname, DEV_PROP_STRING,
val, 1);
else if (is_pset_node(fwnode))
return pset_prop_read_string(to_pset_node(fwnode), propname, val);
return -ENXIO;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 63 | 70.79% | 2 | 25.00% |
| Andy Shevchenko | 25 | 28.09% | 5 | 62.50% |
| Alexander Sverdlin | 1 | 1.12% | 1 | 12.50% |
| Total | 89 | 100.00% | 8 | 100.00% |
/**
* fwnode_property_read_string_array - return string array property of a node
* @fwnode: Firmware node to get the property of
* @propname: Name of the property
* @val: The values are stored here or %NULL to return the number of values
* @nval: Size of the @val array
*
* Read an string list property @propname from the given firmware node and store
* them to @val if found.
*
* Return: number of values if @val was %NULL,
* %0 if the property was found (success),
* %-EINVAL if given arguments are not valid,
* %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of strings,
* %-EOVERFLOW if the size of the property is not as expected,
* %-ENXIO if no suitable firmware interface is present.
*/
int fwnode_property_read_string_array(struct fwnode_handle *fwnode,
const char *propname, const char **val,
size_t nval)
{
int ret;
ret = __fwnode_property_read_string_array(fwnode, propname, val, nval);
if (ret == -EINVAL && !IS_ERR_OR_NULL(fwnode) &&
!IS_ERR_OR_NULL(fwnode->secondary))
ret = __fwnode_property_read_string_array(fwnode->secondary,
propname, val, nval);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andy Shevchenko | 69 | 87.34% | 1 | 25.00% |
| Heikki Krogerus | 10 | 12.66% | 3 | 75.00% |
| Total | 79 | 100.00% | 4 | 100.00% |
EXPORT_SYMBOL_GPL(fwnode_property_read_string_array);
/**
* fwnode_property_read_string - return a string property of a firmware node
* @fwnode: Firmware node to get the property of
* @propname: Name of the property
* @val: The value is stored here
*
* Read property @propname from the given firmware node and store the value into
* @val if found. The value is checked to be a string.
*
* Return: %0 if the property was found (success),
* %-EINVAL if given arguments are not valid,
* %-ENODATA if the property does not have a value,
* %-EPROTO or %-EILSEQ if the property is not a string,
* %-ENXIO if no suitable firmware interface is present.
*/
int fwnode_property_read_string(struct fwnode_handle *fwnode,
const char *propname, const char **val)
{
int ret;
ret = __fwnode_property_read_string(fwnode, propname, val);
if (ret == -EINVAL && !IS_ERR_OR_NULL(fwnode) &&
!IS_ERR_OR_NULL(fwnode->secondary))
ret = __fwnode_property_read_string(fwnode->secondary,
propname, val);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andy Shevchenko | 62 | 86.11% | 1 | 25.00% |
| Heikki Krogerus | 10 | 13.89% | 3 | 75.00% |
| Total | 72 | 100.00% | 4 | 100.00% |
EXPORT_SYMBOL_GPL(fwnode_property_read_string);
/**
* fwnode_property_match_string - find a string in an array and return index
* @fwnode: Firmware node to get the property of
* @propname: Name of the property holding the array
* @string: String to look for
*
* Find a given string in a string array and if it is found return the
* index back.
*
* Return: %0 if the property was found (success),
* %-EINVAL if given arguments are not valid,
* %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of strings,
* %-ENXIO if no suitable firmware interface is present.
*/
int fwnode_property_match_string(struct fwnode_handle *fwnode,
const char *propname, const char *string)
{
const char **values;
int nval, ret;
nval = fwnode_property_read_string_array(fwnode, propname, NULL, 0);
if (nval < 0)
return nval;
if (nval == 0)
return -ENODATA;
values = kcalloc(nval, sizeof(*values), GFP_KERNEL);
if (!values)
return -ENOMEM;
ret = fwnode_property_read_string_array(fwnode, propname, values, nval);
if (ret < 0)
goto out;
ret = match_string(values, nval, string);
if (ret < 0)
ret = -ENODATA;
out:
kfree(values);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Mika Westerberg | 120 | 85.11% | 1 | 33.33% |
| Andy Shevchenko | 21 | 14.89% | 2 | 66.67% |
| Total | 141 | 100.00% | 3 | 100.00% |
EXPORT_SYMBOL_GPL(fwnode_property_match_string);
static int property_copy_string_array(struct property_entry *dst,
const struct property_entry *src)
{
char **d;
size_t nval = src->length / sizeof(*d);
int i;
d = kcalloc(nval, sizeof(*d), GFP_KERNEL);
if (!d)
return -ENOMEM;
for (i = 0; i < nval; i++) {
d[i] = kstrdup(src->pointer.str[i], GFP_KERNEL);
if (!d[i] && src->pointer.str[i]) {
while (--i >= 0)
kfree(d[i]);
kfree(d);
return -ENOMEM;
}
}
dst->pointer.raw_data = d;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dmitry Torokhov | 91 | 60.67% | 1 | 50.00% |
| Mika Westerberg | 59 | 39.33% | 1 | 50.00% |
| Total | 150 | 100.00% | 2 | 100.00% |
static int property_entry_copy_data(struct property_entry *dst,
const struct property_entry *src)
{
int error;
dst->name = kstrdup(src->name, GFP_KERNEL);
if (!dst->name)
return -ENOMEM;
if (src->is_array) {
if (!src->length) {
error = -ENODATA;
goto out_free_name;
}
if (src->is_string) {
error = property_copy_string_array(dst, src);
if (error)
goto out_free_name;
} else {
dst->pointer.raw_data = kmemdup(src->pointer.raw_data,
src->length, GFP_KERNEL);
if (!dst->pointer.raw_data) {
error = -ENOMEM;
goto out_free_name;
}
}
} else if (src->is_string) {
dst->value.str = kstrdup(src->value.str, GFP_KERNEL);
if (!dst->value.str && src->value.str) {
error = -ENOMEM;
goto out_free_name;
}
} else {
dst->value.raw_data = src->value.raw_data;
}
dst->length = src->length;
dst->is_array = src->is_array;
dst->is_string = src->is_string;
return 0;
out_free_name:
kfree(dst->name);
return error;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Mika Westerberg | 178 | 73.86% | 1 | 25.00% |
| Dmitry Torokhov | 54 | 22.41% | 2 | 50.00% |
| Andy Shevchenko | 9 | 3.73% | 1 | 25.00% |
| Total | 241 | 100.00% | 4 | 100.00% |
static void property_entry_free_data(const struct property_entry *p)
{
size_t i, nval;
if (p->is_array) {
if (p->is_string && p->pointer.str) {
nval = p->length / sizeof(const char *);
for (i = 0; i < nval; i++)
kfree(p->pointer.str[i]);
}
kfree(p->pointer.raw_data);
} else if (p->is_string) {
kfree(p->value.str);
}
kfree(p->name);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dmitry Torokhov | 85 | 76.58% | 1 | 50.00% |
| Mika Westerberg | 26 | 23.42% | 1 | 50.00% |
| Total | 111 | 100.00% | 2 | 100.00% |
/**
* property_entries_dup - duplicate array of properties
* @properties: array of properties to copy
*
* This function creates a deep copy of the given NULL-terminated array
* of property entries.
*/
struct property_entry *
property_entries_dup(const struct property_entry *properties)
{
struct property_entry *p;
int i, n = 0;
while (properties[n].name)
n++;
p = kcalloc(n + 1, sizeof(*p), GFP_KERNEL);
if (!p)
return ERR_PTR(-ENOMEM);
for (i = 0; i < n; i++) {
int ret = property_entry_copy_data(&p[i], &properties[i]);
if (ret) {
while (--i >= 0)
property_entry_free_data(&p[i]);
kfree(p);
return ERR_PTR(ret);
}
}
return p;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Mika Westerberg | 90 | 66.67% | 1 | 33.33% |
| Dmitry Torokhov | 45 | 33.33% | 2 | 66.67% |
| Total | 135 | 100.00% | 3 | 100.00% |
EXPORT_SYMBOL_GPL(property_entries_dup);
/**
* property_entries_free - free previously allocated array of properties
* @properties: array of properties to destroy
*
* This function frees given NULL-terminated array of property entries,
* along with their data.
*/
void property_entries_free(const struct property_entry *properties)
{
const struct property_entry *p;
for (p = properties; p->name; p++)
property_entry_free_data(p);
kfree(properties);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dmitry Torokhov | 40 | 100.00% | 1 | 100.00% |
| Total | 40 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(property_entries_free);
/**
* pset_free_set - releases memory allocated for copied property set
* @pset: Property set to release
*
* Function takes previously copied property set and releases all the
* memory allocated to it.
*/
static void pset_free_set(struct property_set *pset)
{
if (!pset)
return;
property_entries_free(pset->properties);
kfree(pset);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dmitry Torokhov | 29 | 100.00% | 1 | 100.00% |
| Total | 29 | 100.00% | 1 | 100.00% |
/**
* pset_copy_set - copies property set
* @pset: Property set to copy
*
* This function takes a deep copy of the given property set and returns
* pointer to the copy. Call device_free_property_set() to free resources
* allocated in this function.
*
* Return: Pointer to the new property set or error pointer.
*/
static struct property_set *pset_copy_set(const struct property_set *pset)
{
struct property_entry *properties;
struct property_set *p;
p = kzalloc(sizeof(*p), GFP_KERNEL);
if (!p)
return ERR_PTR(-ENOMEM);
properties = property_entries_dup(pset->properties);
if (IS_ERR(properties)) {
kfree(p);
return ERR_CAST(properties);
}
p->properties = properties;
return p;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dmitry Torokhov | 87 | 100.00% | 1 | 100.00% |
| Total | 87 | 100.00% | 1 | 100.00% |
/**
* device_remove_properties - Remove properties from a device object.
* @dev: Device whose properties to remove.
*
* The function removes properties previously associated to the device
* secondary firmware node with device_add_properties(). Memory allocated
* to the properties will also be released.
*/
void device_remove_properties(struct device *dev)
{
struct fwnode_handle *fwnode;
fwnode = dev_fwnode(dev);
if (!fwnode)
return;
/*
* Pick either primary or secondary node depending which one holds
* the pset. If there is no real firmware node (ACPI/DT) primary
* will hold the pset.
*/
if (is_pset_node(fwnode)) {
set_primary_fwnode(dev, NULL);
pset_free_set(to_pset_node(fwnode));
} else {
fwnode = fwnode->secondary;
if (!IS_ERR(fwnode) && is_pset_node(fwnode)) {
set_secondary_fwnode(dev, NULL);
pset_free_set(to_pset_node(fwnode));
}
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Mika Westerberg | 62 | 67.39% | 1 | 33.33% |
| Heikki Krogerus | 30 | 32.61% | 2 | 66.67% |
| Total | 92 | 100.00% | 3 | 100.00% |
EXPORT_SYMBOL_GPL(device_remove_properties);
/**
* device_add_properties - Add a collection of properties to a device object.
* @dev: Device to add properties to.
* @properties: Collection of properties to add.
*
* Associate a collection of device properties represented by @properties with
* @dev as its secondary firmware node. The function takes a copy of
* @properties.
*/
int device_add_properties(struct device *dev,
const struct property_entry *properties)
{
struct property_set *p, pset;
if (!properties)
return -EINVAL;
pset.properties = properties;
p = pset_copy_set(&pset);
if (IS_ERR(p))
return PTR_ERR(p);
p->fwnode.type = FWNODE_PDATA;
set_secondary_fwnode(dev, &p->fwnode);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Mika Westerberg | 66 | 82.50% | 1 | 33.33% |
| Heikki Krogerus | 13 | 16.25% | 1 | 33.33% |
| Dmitry Torokhov | 1 | 1.25% | 1 | 33.33% |
| Total | 80 | 100.00% | 3 | 100.00% |
EXPORT_SYMBOL_GPL(device_add_properties);
/**
* device_get_next_child_node - Return the next child node handle for a device
* @dev: Device to find the next child node for.
* @child: Handle to one of the device's child nodes or a null handle.
*/
struct fwnode_handle *device_get_next_child_node(struct device *dev,
struct fwnode_handle *child)
{
if (IS_ENABLED(CONFIG_OF) && dev->of_node) {
struct device_node *node;
node = of_get_next_available_child(dev->of_node, to_of_node(child));
if (node)
return &node->fwnode;
} else if (IS_ENABLED(CONFIG_ACPI)) {
return acpi_get_next_subnode(dev, child);
}
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 79 | 98.75% | 2 | 66.67% |
| Alexander Sverdlin | 1 | 1.25% | 1 | 33.33% |
| Total | 80 | 100.00% | 3 | 100.00% |
EXPORT_SYMBOL_GPL(device_get_next_child_node);
/**
* device_get_named_child_node - Return first matching named child node handle
* @dev: Device to find the named child node for.
* @childname: String to match child node name against.
*/
struct fwnode_handle *device_get_named_child_node(struct device *dev,
const char *childname)
{
struct fwnode_handle *child;
/*
* Find first matching named child node of this device.
* For ACPI this will be a data only sub-node.
*/
device_for_each_child_node(dev, child) {
if (is_of_node(child)) {
if (!of_node_cmp(to_of_node(child)->name, childname))
return child;
} else if (is_acpi_data_node(child)) {
if (acpi_data_node_match(child, childname))
return child;
}
}
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Adam Thomson | 83 | 100.00% | 1 | 100.00% |
| Total | 83 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(device_get_named_child_node);
/**
* fwnode_handle_put - Drop reference to a device node
* @fwnode: Pointer to the device node to drop the reference to.
*
* This has to be used when terminating device_for_each_child_node() iteration
* with break or return to prevent stale device node references from being left
* behind.
*/
void fwnode_handle_put(struct fwnode_handle *fwnode)
{
if (is_of_node(fwnode))
of_node_put(to_of_node(fwnode));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 24 | 96.00% | 1 | 50.00% |
| Alexander Sverdlin | 1 | 4.00% | 1 | 50.00% |
| Total | 25 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL_GPL(fwnode_handle_put);
/**
* device_get_child_node_count - return the number of child nodes for device
* @dev: Device to cound the child nodes for
*/
unsigned int device_get_child_node_count(struct device *dev)
{
struct fwnode_handle *child;
unsigned int count = 0;
device_for_each_child_node(dev, child)
count++;
return count;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 34 | 100.00% | 1 | 100.00% |
| Total | 34 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(device_get_child_node_count);
bool device_dma_supported(struct device *dev)
{
/* For DT, this is always supported.
* For ACPI, this depends on CCA, which
* is determined by the acpi_dma_supported().
*/
if (IS_ENABLED(CONFIG_OF) && dev->of_node)
return true;
return acpi_dma_supported(ACPI_COMPANION(dev));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Suravee Suthikulpanit | 34 | 100.00% | 1 | 100.00% |
| Total | 34 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(device_dma_supported);
enum dev_dma_attr device_get_dma_attr(struct device *dev)
{
enum dev_dma_attr attr = DEV_DMA_NOT_SUPPORTED;
if (IS_ENABLED(CONFIG_OF) && dev->of_node) {
if (of_dma_is_coherent(dev->of_node))
attr = DEV_DMA_COHERENT;
else
attr = DEV_DMA_NON_COHERENT;
} else
attr = acpi_get_dma_attr(ACPI_COMPANION(dev));
return attr;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Suravee Suthikulpanit | 62 | 100.00% | 1 | 100.00% |
| Total | 62 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(device_get_dma_attr);
/**
* device_get_phy_mode - Get phy mode for given device
* @dev: Pointer to the given device
*
* The function gets phy interface string from property 'phy-mode' or
* 'phy-connection-type', and return its index in phy_modes table, or errno in
* error case.
*/
int device_get_phy_mode(struct device *dev)
{
const char *pm;
int err, i;
err = device_property_read_string(dev, "phy-mode", &pm);
if (err < 0)
err = device_property_read_string(dev,
"phy-connection-type", &pm);
if (err < 0)
return err;
for (i = 0; i < PHY_INTERFACE_MODE_MAX; i++)
if (!strcasecmp(pm, phy_modes(i)))
return i;
return -ENODEV;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jeremy Linton | 92 | 100.00% | 1 | 100.00% |
| Total | 92 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(device_get_phy_mode);
static void *device_get_mac_addr(struct device *dev,
const char *name, char *addr,
int alen)
{
int ret = device_property_read_u8_array(dev, name, addr, alen);
if (ret == 0 && alen == ETH_ALEN && is_valid_ether_addr(addr))
return addr;
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jeremy Linton | 59 | 100.00% | 2 | 100.00% |
| Total | 59 | 100.00% | 2 | 100.00% |
/**
* device_get_mac_address - Get the MAC for a given device
* @dev: Pointer to the device
* @addr: Address of buffer to store the MAC in
* @alen: Length of the buffer pointed to by addr, should be ETH_ALEN
*
* Search the firmware node for the best MAC address to use. 'mac-address' is
* checked first, because that is supposed to contain to "most recent" MAC
* address. If that isn't set, then 'local-mac-address' is checked next,
* because that is the default address. If that isn't set, then the obsolete
* 'address' is checked, just in case we're using an old device tree.
*
* Note that the 'address' property is supposed to contain a virtual address of
* the register set, but some DTS files have redefined that property to be the
* MAC address.
*
* All-zero MAC addresses are rejected, because those could be properties that
* exist in the firmware tables, but were not updated by the firmware. For
* example, the DTS could define 'mac-address' and 'local-mac-address', with
* zero MAC addresses. Some older U-Boots only initialized 'local-mac-address'.
* In this case, the real MAC is in 'local-mac-address', and 'mac-address'
* exists but is all zeros.
*/
void *device_get_mac_address(struct device *dev, char *addr, int alen)
{
char *res;
res = device_get_mac_addr(dev, "mac-address", addr, alen);
if (res)
return res;
res = device_get_mac_addr(dev, "local-mac-address", addr, alen);
if (res)
return res;
return device_get_mac_addr(dev, "address", addr, alen);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jeremy Linton | 64 | 86.49% | 1 | 50.00% |
| Julien Grall | 10 | 13.51% | 1 | 50.00% |
| Total | 74 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL(device_get_mac_address);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 1128 | 30.55% | 7 | 20.00% |
| Andy Shevchenko | 886 | 24.00% | 9 | 25.71% |
| Mika Westerberg | 654 | 17.71% | 2 | 5.71% |
| Dmitry Torokhov | 460 | 12.46% | 3 | 8.57% |
| Jeremy Linton | 233 | 6.31% | 2 | 5.71% |
| Suravee Suthikulpanit | 109 | 2.95% | 2 | 5.71% |
| Heikki Krogerus | 96 | 2.60% | 5 | 14.29% |
| Adam Thomson | 89 | 2.41% | 1 | 2.86% |
| Guenter Roeck | 17 | 0.46% | 1 | 2.86% |
| Julien Grall | 10 | 0.27% | 1 | 2.86% |
| Alexander Sverdlin | 6 | 0.16% | 1 | 2.86% |
| Adrian Hunter | 4 | 0.11% | 1 | 2.86% |
| Total | 3692 | 100.00% | 35 | 100.00% |
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