2017-11-07 16:30:07 +00:00
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// SPDX-License-Identifier: GPL-2.0
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2014-11-04 00:28:56 +00:00
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/*
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* property.c - Unified device property interface.
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*
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* Copyright (C) 2014, Intel Corporation
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* Authors: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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* Mika Westerberg <mika.westerberg@linux.intel.com>
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*/
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#include <linux/acpi.h>
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2015-04-03 14:05:11 +00:00
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#include <linux/export.h>
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#include <linux/kernel.h>
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2014-11-04 00:28:56 +00:00
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#include <linux/of.h>
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2015-06-10 16:08:54 +00:00
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#include <linux/of_address.h>
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2017-03-28 07:52:21 +00:00
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#include <linux/of_graph.h>
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2018-01-18 12:31:40 +00:00
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#include <linux/of_irq.h>
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2015-04-03 14:05:11 +00:00
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#include <linux/property.h>
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2015-08-12 22:06:26 +00:00
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#include <linux/phy.h>
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2015-04-03 14:05:11 +00:00
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2017-03-28 07:52:24 +00:00
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struct fwnode_handle *dev_fwnode(struct device *dev)
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2015-03-23 23:24:16 +00:00
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{
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return IS_ENABLED(CONFIG_OF) && dev->of_node ?
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2021-05-10 09:56:12 +00:00
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of_fwnode_handle(dev->of_node) : dev->fwnode;
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2015-03-23 23:24:16 +00:00
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}
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2017-03-28 07:52:24 +00:00
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EXPORT_SYMBOL_GPL(dev_fwnode);
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2014-11-04 00:28:56 +00:00
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/**
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* device_property_present - check if a property of a device is present
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* @dev: Device whose property is being checked
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* @propname: Name of the property
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*
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* Check if property @propname is present in the device firmware description.
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*/
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bool device_property_present(struct device *dev, const char *propname)
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{
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2015-03-23 23:24:16 +00:00
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return fwnode_property_present(dev_fwnode(dev), propname);
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2014-11-04 00:28:56 +00:00
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}
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EXPORT_SYMBOL_GPL(device_property_present);
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2015-11-30 15:11:36 +00:00
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/**
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* fwnode_property_present - check if a property of a firmware node is present
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* @fwnode: Firmware node whose property to check
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* @propname: Name of the property
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*/
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2017-07-21 11:39:36 +00:00
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bool fwnode_property_present(const struct fwnode_handle *fwnode,
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const char *propname)
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2015-11-30 15:11:36 +00:00
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{
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bool ret;
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2017-07-11 15:20:20 +00:00
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ret = fwnode_call_bool_op(fwnode, property_present, propname);
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2016-03-10 11:03:18 +00:00
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if (ret == false && !IS_ERR_OR_NULL(fwnode) &&
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!IS_ERR_OR_NULL(fwnode->secondary))
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2017-07-11 15:20:20 +00:00
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ret = fwnode_call_bool_op(fwnode->secondary, property_present,
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2017-06-06 09:37:37 +00:00
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propname);
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2015-11-30 15:11:36 +00:00
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return ret;
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}
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2014-11-04 13:03:59 +00:00
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EXPORT_SYMBOL_GPL(fwnode_property_present);
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2014-11-04 00:28:56 +00:00
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/**
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* device_property_read_u8_array - return a u8 array property of a device
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* @dev: Device to get the property of
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* @propname: Name of the property
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2015-03-17 07:58:58 +00:00
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* @val: The values are stored here or %NULL to return the number of values
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2014-11-04 00:28:56 +00:00
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* @nval: Size of the @val array
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*
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* Function reads an array of u8 properties with @propname from the device
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* firmware description and stores them to @val if found.
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*
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2015-03-17 07:58:58 +00:00
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* Return: number of values if @val was %NULL,
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* %0 if the property was found (success),
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2014-11-04 00:28:56 +00:00
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* %-EINVAL if given arguments are not valid,
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* %-ENODATA if the property does not have a value,
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* %-EPROTO if the property is not an array of numbers,
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* %-EOVERFLOW if the size of the property is not as expected.
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2015-08-27 03:27:04 +00:00
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* %-ENXIO if no suitable firmware interface is present.
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2014-11-04 00:28:56 +00:00
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*/
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int device_property_read_u8_array(struct device *dev, const char *propname,
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u8 *val, size_t nval)
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{
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2015-03-23 23:24:16 +00:00
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return fwnode_property_read_u8_array(dev_fwnode(dev), propname, val, nval);
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2014-11-04 00:28:56 +00:00
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}
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EXPORT_SYMBOL_GPL(device_property_read_u8_array);
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/**
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* device_property_read_u16_array - return a u16 array property of a device
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* @dev: Device to get the property of
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* @propname: Name of the property
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2015-03-17 07:58:58 +00:00
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* @val: The values are stored here or %NULL to return the number of values
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2014-11-04 00:28:56 +00:00
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* @nval: Size of the @val array
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*
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* Function reads an array of u16 properties with @propname from the device
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* firmware description and stores them to @val if found.
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*
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2015-03-17 07:58:58 +00:00
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* Return: number of values if @val was %NULL,
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* %0 if the property was found (success),
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2014-11-04 00:28:56 +00:00
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* %-EINVAL if given arguments are not valid,
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* %-ENODATA if the property does not have a value,
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* %-EPROTO if the property is not an array of numbers,
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* %-EOVERFLOW if the size of the property is not as expected.
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2015-08-27 03:27:04 +00:00
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* %-ENXIO if no suitable firmware interface is present.
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2014-11-04 00:28:56 +00:00
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*/
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int device_property_read_u16_array(struct device *dev, const char *propname,
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u16 *val, size_t nval)
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{
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2015-03-23 23:24:16 +00:00
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return fwnode_property_read_u16_array(dev_fwnode(dev), propname, val, nval);
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2014-11-04 00:28:56 +00:00
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}
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EXPORT_SYMBOL_GPL(device_property_read_u16_array);
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/**
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* device_property_read_u32_array - return a u32 array property of a device
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* @dev: Device to get the property of
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* @propname: Name of the property
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2015-03-17 07:58:58 +00:00
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* @val: The values are stored here or %NULL to return the number of values
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2014-11-04 00:28:56 +00:00
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* @nval: Size of the @val array
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*
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* Function reads an array of u32 properties with @propname from the device
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* firmware description and stores them to @val if found.
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*
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2015-03-17 07:58:58 +00:00
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* Return: number of values if @val was %NULL,
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* %0 if the property was found (success),
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2014-11-04 00:28:56 +00:00
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* %-EINVAL if given arguments are not valid,
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* %-ENODATA if the property does not have a value,
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* %-EPROTO if the property is not an array of numbers,
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* %-EOVERFLOW if the size of the property is not as expected.
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2015-08-27 03:27:04 +00:00
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* %-ENXIO if no suitable firmware interface is present.
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2014-11-04 00:28:56 +00:00
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*/
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int device_property_read_u32_array(struct device *dev, const char *propname,
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u32 *val, size_t nval)
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{
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2015-03-23 23:24:16 +00:00
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return fwnode_property_read_u32_array(dev_fwnode(dev), propname, val, nval);
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2014-11-04 00:28:56 +00:00
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}
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EXPORT_SYMBOL_GPL(device_property_read_u32_array);
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/**
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* device_property_read_u64_array - return a u64 array property of a device
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* @dev: Device to get the property of
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* @propname: Name of the property
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2015-03-17 07:58:58 +00:00
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* @val: The values are stored here or %NULL to return the number of values
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2014-11-04 00:28:56 +00:00
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* @nval: Size of the @val array
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*
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* Function reads an array of u64 properties with @propname from the device
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* firmware description and stores them to @val if found.
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*
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2015-03-17 07:58:58 +00:00
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* Return: number of values if @val was %NULL,
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* %0 if the property was found (success),
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2014-11-04 00:28:56 +00:00
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* %-EINVAL if given arguments are not valid,
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* %-ENODATA if the property does not have a value,
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* %-EPROTO if the property is not an array of numbers,
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* %-EOVERFLOW if the size of the property is not as expected.
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2015-08-27 03:27:04 +00:00
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* %-ENXIO if no suitable firmware interface is present.
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2014-11-04 00:28:56 +00:00
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*/
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int device_property_read_u64_array(struct device *dev, const char *propname,
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u64 *val, size_t nval)
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{
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2015-03-23 23:24:16 +00:00
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return fwnode_property_read_u64_array(dev_fwnode(dev), propname, val, nval);
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2014-11-04 00:28:56 +00:00
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}
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EXPORT_SYMBOL_GPL(device_property_read_u64_array);
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/**
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* device_property_read_string_array - return a string array property of device
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* @dev: Device to get the property of
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* @propname: Name of the property
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2015-03-17 07:58:58 +00:00
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* @val: The values are stored here or %NULL to return the number of values
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2014-11-04 00:28:56 +00:00
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* @nval: Size of the @val array
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*
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* Function reads an array of string properties with @propname from the device
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* firmware description and stores them to @val if found.
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*
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2017-03-28 12:22:19 +00:00
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* Return: number of values read on success if @val is non-NULL,
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* number of values available on success if @val is NULL,
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2014-11-04 00:28:56 +00:00
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* %-EINVAL if given arguments are not valid,
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* %-ENODATA if the property does not have a value,
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* %-EPROTO or %-EILSEQ if the property is not an array of strings,
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* %-EOVERFLOW if the size of the property is not as expected.
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2015-08-27 03:27:04 +00:00
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* %-ENXIO if no suitable firmware interface is present.
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2014-11-04 00:28:56 +00:00
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*/
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int device_property_read_string_array(struct device *dev, const char *propname,
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const char **val, size_t nval)
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{
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2015-03-23 23:24:16 +00:00
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return fwnode_property_read_string_array(dev_fwnode(dev), propname, val, nval);
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2014-11-04 00:28:56 +00:00
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}
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EXPORT_SYMBOL_GPL(device_property_read_string_array);
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/**
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* device_property_read_string - return a string property of a device
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* @dev: Device to get the property of
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* @propname: Name of the property
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* @val: The value is stored here
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*
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* Function reads property @propname from the device firmware description and
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* stores the value into @val if found. The value is checked to be a string.
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*
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* Return: %0 if the property was found (success),
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* %-EINVAL if given arguments are not valid,
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* %-ENODATA if the property does not have a value,
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* %-EPROTO or %-EILSEQ if the property type is not a string.
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2015-08-27 03:27:04 +00:00
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* %-ENXIO if no suitable firmware interface is present.
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2014-11-04 00:28:56 +00:00
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*/
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int device_property_read_string(struct device *dev, const char *propname,
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const char **val)
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{
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2015-03-23 23:24:16 +00:00
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return fwnode_property_read_string(dev_fwnode(dev), propname, val);
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2014-11-04 00:28:56 +00:00
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}
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EXPORT_SYMBOL_GPL(device_property_read_string);
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2014-11-04 13:03:59 +00:00
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2015-09-14 14:37:35 +00:00
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/**
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* device_property_match_string - find a string in an array and return index
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* @dev: Device to get the property of
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* @propname: Name of the property holding the array
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* @string: String to look for
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*
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* Find a given string in a string array and if it is found return the
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* index back.
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*
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* Return: %0 if the property was found (success),
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* %-EINVAL if given arguments are not valid,
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* %-ENODATA if the property does not have a value,
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* %-EPROTO if the property is not an array of strings,
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* %-ENXIO if no suitable firmware interface is present.
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*/
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int device_property_match_string(struct device *dev, const char *propname,
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const char *string)
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{
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return fwnode_property_match_string(dev_fwnode(dev), propname, string);
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}
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EXPORT_SYMBOL_GPL(device_property_match_string);
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2017-07-21 11:39:36 +00:00
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static int fwnode_property_read_int_array(const struct fwnode_handle *fwnode,
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2017-06-06 09:37:37 +00:00
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const char *propname,
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unsigned int elem_size, void *val,
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size_t nval)
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{
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int ret;
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ret = fwnode_call_int_op(fwnode, property_read_int_array, propname,
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elem_size, val, nval);
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if (ret == -EINVAL && !IS_ERR_OR_NULL(fwnode) &&
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!IS_ERR_OR_NULL(fwnode->secondary))
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ret = fwnode_call_int_op(
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fwnode->secondary, property_read_int_array, propname,
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elem_size, val, nval);
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return ret;
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}
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2015-11-30 15:11:36 +00:00
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2014-11-04 13:03:59 +00:00
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/**
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* fwnode_property_read_u8_array - return a u8 array property of firmware node
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* @fwnode: Firmware node to get the property of
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* @propname: Name of the property
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2015-03-17 07:58:58 +00:00
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* @val: The values are stored here or %NULL to return the number of values
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2014-11-04 13:03:59 +00:00
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* @nval: Size of the @val array
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*
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* Read an array of u8 properties with @propname from @fwnode and stores them to
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* @val if found.
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*
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2015-03-17 07:58:58 +00:00
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* Return: number of values if @val was %NULL,
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* %0 if the property was found (success),
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2014-11-04 13:03:59 +00:00
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* %-EINVAL if given arguments are not valid,
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* %-ENODATA if the property does not have a value,
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* %-EPROTO if the property is not an array of numbers,
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* %-EOVERFLOW if the size of the property is not as expected,
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* %-ENXIO if no suitable firmware interface is present.
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*/
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2017-07-21 11:39:36 +00:00
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int fwnode_property_read_u8_array(const struct fwnode_handle *fwnode,
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2014-11-04 13:03:59 +00:00
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const char *propname, u8 *val, size_t nval)
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{
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2017-06-06 09:37:37 +00:00
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return fwnode_property_read_int_array(fwnode, propname, sizeof(u8),
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val, nval);
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2014-11-04 13:03:59 +00:00
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}
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EXPORT_SYMBOL_GPL(fwnode_property_read_u8_array);
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/**
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* fwnode_property_read_u16_array - return a u16 array property of firmware node
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* @fwnode: Firmware node to get the property of
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* @propname: Name of the property
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2015-03-17 07:58:58 +00:00
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* @val: The values are stored here or %NULL to return the number of values
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2014-11-04 13:03:59 +00:00
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* @nval: Size of the @val array
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*
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|
|
* Read an array of u16 properties with @propname from @fwnode and store them to
|
|
|
|
* @val if found.
|
|
|
|
*
|
2015-03-17 07:58:58 +00:00
|
|
|
* Return: number of values if @val was %NULL,
|
|
|
|
* %0 if the property was found (success),
|
2014-11-04 13:03:59 +00:00
|
|
|
* %-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.
|
|
|
|
*/
|
2017-07-21 11:39:36 +00:00
|
|
|
int fwnode_property_read_u16_array(const struct fwnode_handle *fwnode,
|
2014-11-04 13:03:59 +00:00
|
|
|
const char *propname, u16 *val, size_t nval)
|
|
|
|
{
|
2017-06-06 09:37:37 +00:00
|
|
|
return fwnode_property_read_int_array(fwnode, propname, sizeof(u16),
|
|
|
|
val, nval);
|
2014-11-04 13:03:59 +00:00
|
|
|
}
|
|
|
|
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
|
2015-03-17 07:58:58 +00:00
|
|
|
* @val: The values are stored here or %NULL to return the number of values
|
2014-11-04 13:03:59 +00:00
|
|
|
* @nval: Size of the @val array
|
|
|
|
*
|
|
|
|
* Read an array of u32 properties with @propname from @fwnode store them to
|
|
|
|
* @val if found.
|
|
|
|
*
|
2015-03-17 07:58:58 +00:00
|
|
|
* Return: number of values if @val was %NULL,
|
|
|
|
* %0 if the property was found (success),
|
2014-11-04 13:03:59 +00:00
|
|
|
* %-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.
|
|
|
|
*/
|
2017-07-21 11:39:36 +00:00
|
|
|
int fwnode_property_read_u32_array(const struct fwnode_handle *fwnode,
|
2014-11-04 13:03:59 +00:00
|
|
|
const char *propname, u32 *val, size_t nval)
|
|
|
|
{
|
2017-06-06 09:37:37 +00:00
|
|
|
return fwnode_property_read_int_array(fwnode, propname, sizeof(u32),
|
|
|
|
val, nval);
|
2014-11-04 13:03:59 +00:00
|
|
|
}
|
|
|
|
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
|
2015-03-17 07:58:58 +00:00
|
|
|
* @val: The values are stored here or %NULL to return the number of values
|
2014-11-04 13:03:59 +00:00
|
|
|
* @nval: Size of the @val array
|
|
|
|
*
|
|
|
|
* Read an array of u64 properties with @propname from @fwnode and store them to
|
|
|
|
* @val if found.
|
|
|
|
*
|
2015-03-17 07:58:58 +00:00
|
|
|
* Return: number of values if @val was %NULL,
|
|
|
|
* %0 if the property was found (success),
|
2014-11-04 13:03:59 +00:00
|
|
|
* %-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.
|
|
|
|
*/
|
2017-07-21 11:39:36 +00:00
|
|
|
int fwnode_property_read_u64_array(const struct fwnode_handle *fwnode,
|
2014-11-04 13:03:59 +00:00
|
|
|
const char *propname, u64 *val, size_t nval)
|
|
|
|
{
|
2017-06-06 09:37:37 +00:00
|
|
|
return fwnode_property_read_int_array(fwnode, propname, sizeof(u64),
|
|
|
|
val, nval);
|
2014-11-04 13:03:59 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(fwnode_property_read_u64_array);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* 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
|
2015-03-17 07:58:58 +00:00
|
|
|
* @val: The values are stored here or %NULL to return the number of values
|
2014-11-04 13:03:59 +00:00
|
|
|
* @nval: Size of the @val array
|
|
|
|
*
|
|
|
|
* Read an string list property @propname from the given firmware node and store
|
|
|
|
* them to @val if found.
|
|
|
|
*
|
2017-03-28 12:22:19 +00:00
|
|
|
* Return: number of values read on success if @val is non-NULL,
|
|
|
|
* number of values available on success if @val is NULL,
|
2014-11-04 13:03:59 +00:00
|
|
|
* %-EINVAL if given arguments are not valid,
|
|
|
|
* %-ENODATA if the property does not have a value,
|
2017-03-28 12:22:17 +00:00
|
|
|
* %-EPROTO or %-EILSEQ if the property is not an array of strings,
|
2014-11-04 13:03:59 +00:00
|
|
|
* %-EOVERFLOW if the size of the property is not as expected,
|
|
|
|
* %-ENXIO if no suitable firmware interface is present.
|
|
|
|
*/
|
2017-07-21 11:39:36 +00:00
|
|
|
int fwnode_property_read_string_array(const struct fwnode_handle *fwnode,
|
2014-11-04 13:03:59 +00:00
|
|
|
const char *propname, const char **val,
|
|
|
|
size_t nval)
|
|
|
|
{
|
2015-11-30 15:11:36 +00:00
|
|
|
int ret;
|
|
|
|
|
2017-06-06 09:37:37 +00:00
|
|
|
ret = fwnode_call_int_op(fwnode, property_read_string_array, propname,
|
|
|
|
val, nval);
|
2016-03-10 11:03:18 +00:00
|
|
|
if (ret == -EINVAL && !IS_ERR_OR_NULL(fwnode) &&
|
|
|
|
!IS_ERR_OR_NULL(fwnode->secondary))
|
2017-06-06 09:37:37 +00:00
|
|
|
ret = fwnode_call_int_op(fwnode->secondary,
|
|
|
|
property_read_string_array, propname,
|
|
|
|
val, nval);
|
2015-11-30 15:11:36 +00:00
|
|
|
return ret;
|
2014-11-04 13:03:59 +00:00
|
|
|
}
|
|
|
|
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.
|
|
|
|
*/
|
2017-07-21 11:39:36 +00:00
|
|
|
int fwnode_property_read_string(const struct fwnode_handle *fwnode,
|
2014-11-04 13:03:59 +00:00
|
|
|
const char *propname, const char **val)
|
|
|
|
{
|
2017-03-28 12:26:22 +00:00
|
|
|
int ret = fwnode_property_read_string_array(fwnode, propname, val, 1);
|
2015-11-30 15:11:36 +00:00
|
|
|
|
2017-03-28 12:22:19 +00:00
|
|
|
return ret < 0 ? ret : 0;
|
2014-11-04 13:03:59 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(fwnode_property_read_string);
|
|
|
|
|
2015-09-14 14:37:35 +00:00
|
|
|
/**
|
|
|
|
* 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.
|
|
|
|
*/
|
2017-07-21 11:39:36 +00:00
|
|
|
int fwnode_property_match_string(const struct fwnode_handle *fwnode,
|
2015-09-14 14:37:35 +00:00
|
|
|
const char *propname, const char *string)
|
|
|
|
{
|
|
|
|
const char **values;
|
2016-03-17 21:22:17 +00:00
|
|
|
int nval, ret;
|
2015-09-14 14:37:35 +00:00
|
|
|
|
|
|
|
nval = fwnode_property_read_string_array(fwnode, propname, NULL, 0);
|
|
|
|
if (nval < 0)
|
|
|
|
return nval;
|
|
|
|
|
2015-12-29 11:07:50 +00:00
|
|
|
if (nval == 0)
|
|
|
|
return -ENODATA;
|
|
|
|
|
2015-09-14 14:37:35 +00:00
|
|
|
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;
|
|
|
|
|
2016-03-17 21:22:17 +00:00
|
|
|
ret = match_string(values, nval, string);
|
|
|
|
if (ret < 0)
|
|
|
|
ret = -ENODATA;
|
2015-09-14 14:37:35 +00:00
|
|
|
out:
|
|
|
|
kfree(values);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(fwnode_property_match_string);
|
|
|
|
|
2017-07-21 12:11:49 +00:00
|
|
|
/**
|
|
|
|
* fwnode_property_get_reference_args() - Find a reference with arguments
|
|
|
|
* @fwnode: Firmware node where to look for the reference
|
|
|
|
* @prop: The name of the property
|
|
|
|
* @nargs_prop: The name of the property telling the number of
|
|
|
|
* arguments in the referred node. NULL if @nargs is known,
|
|
|
|
* otherwise @nargs is ignored. Only relevant on OF.
|
|
|
|
* @nargs: Number of arguments. Ignored if @nargs_prop is non-NULL.
|
|
|
|
* @index: Index of the reference, from zero onwards.
|
|
|
|
* @args: Result structure with reference and integer arguments.
|
|
|
|
*
|
|
|
|
* Obtain a reference based on a named property in an fwnode, with
|
|
|
|
* integer arguments.
|
|
|
|
*
|
|
|
|
* Caller is responsible to call fwnode_handle_put() on the returned
|
|
|
|
* args->fwnode pointer.
|
|
|
|
*
|
2017-09-26 09:08:27 +00:00
|
|
|
* Returns: %0 on success
|
|
|
|
* %-ENOENT when the index is out of bounds, the index has an empty
|
|
|
|
* reference or the property was not found
|
|
|
|
* %-EINVAL on parse error
|
2017-07-21 12:11:49 +00:00
|
|
|
*/
|
|
|
|
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)
|
|
|
|
{
|
2021-11-28 23:24:55 +00:00
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = fwnode_call_int_op(fwnode, get_reference_args, prop, nargs_prop,
|
|
|
|
nargs, index, args);
|
|
|
|
|
|
|
|
if (ret < 0 && !IS_ERR_OR_NULL(fwnode) &&
|
|
|
|
!IS_ERR_OR_NULL(fwnode->secondary))
|
|
|
|
ret = fwnode_call_int_op(fwnode->secondary, get_reference_args,
|
|
|
|
prop, nargs_prop, nargs, index, args);
|
|
|
|
|
|
|
|
return ret;
|
2017-07-21 12:11:49 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(fwnode_property_get_reference_args);
|
|
|
|
|
2019-05-31 14:15:39 +00:00
|
|
|
/**
|
|
|
|
* fwnode_find_reference - Find named reference to a fwnode_handle
|
|
|
|
* @fwnode: Firmware node where to look for the reference
|
|
|
|
* @name: The name of the reference
|
|
|
|
* @index: Index of the reference
|
|
|
|
*
|
|
|
|
* @index can be used when the named reference holds a table of references.
|
|
|
|
*
|
|
|
|
* Returns pointer to the reference fwnode, or ERR_PTR. Caller is responsible to
|
|
|
|
* call fwnode_handle_put() on the returned fwnode pointer.
|
|
|
|
*/
|
|
|
|
struct fwnode_handle *fwnode_find_reference(const struct fwnode_handle *fwnode,
|
|
|
|
const char *name,
|
|
|
|
unsigned int index)
|
|
|
|
{
|
|
|
|
struct fwnode_reference_args args;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = fwnode_property_get_reference_args(fwnode, name, NULL, 0, index,
|
|
|
|
&args);
|
|
|
|
return ret ? ERR_PTR(ret) : args.fwnode;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(fwnode_find_reference);
|
|
|
|
|
2019-10-03 12:32:12 +00:00
|
|
|
/**
|
|
|
|
* fwnode_get_name - Return the name of a node
|
|
|
|
* @fwnode: The firmware node
|
|
|
|
*
|
|
|
|
* Returns a pointer to the node name.
|
|
|
|
*/
|
|
|
|
const char *fwnode_get_name(const struct fwnode_handle *fwnode)
|
|
|
|
{
|
|
|
|
return fwnode_call_ptr_op(fwnode, get_name);
|
|
|
|
}
|
2020-03-02 13:53:51 +00:00
|
|
|
EXPORT_SYMBOL_GPL(fwnode_get_name);
|
2019-10-03 12:32:12 +00:00
|
|
|
|
2019-10-03 12:32:13 +00:00
|
|
|
/**
|
|
|
|
* fwnode_get_name_prefix - Return the prefix of node for printing purposes
|
|
|
|
* @fwnode: The firmware node
|
|
|
|
*
|
|
|
|
* Returns the prefix of a node, intended to be printed right before the node.
|
|
|
|
* The prefix works also as a separator between the nodes.
|
|
|
|
*/
|
|
|
|
const char *fwnode_get_name_prefix(const struct fwnode_handle *fwnode)
|
|
|
|
{
|
|
|
|
return fwnode_call_ptr_op(fwnode, get_name_prefix);
|
|
|
|
}
|
|
|
|
|
2019-10-03 12:32:10 +00:00
|
|
|
/**
|
|
|
|
* fwnode_get_parent - Return parent firwmare node
|
|
|
|
* @fwnode: Firmware whose parent is retrieved
|
|
|
|
*
|
|
|
|
* Return parent firmware node of the given node if possible or %NULL if no
|
|
|
|
* parent was available.
|
|
|
|
*/
|
|
|
|
struct fwnode_handle *fwnode_get_parent(const struct fwnode_handle *fwnode)
|
|
|
|
{
|
|
|
|
return fwnode_call_ptr_op(fwnode, get_parent);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(fwnode_get_parent);
|
|
|
|
|
2017-03-28 07:52:26 +00:00
|
|
|
/**
|
|
|
|
* fwnode_get_next_parent - Iterate to the node's parent
|
|
|
|
* @fwnode: Firmware whose parent is retrieved
|
|
|
|
*
|
|
|
|
* This is like fwnode_get_parent() except that it drops the refcount
|
|
|
|
* on the passed node, making it suitable for iterating through a
|
|
|
|
* node's parents.
|
|
|
|
*
|
|
|
|
* Returns a node pointer with refcount incremented, use
|
|
|
|
* fwnode_handle_node() on it when done.
|
|
|
|
*/
|
|
|
|
struct fwnode_handle *fwnode_get_next_parent(struct fwnode_handle *fwnode)
|
|
|
|
{
|
|
|
|
struct fwnode_handle *parent = fwnode_get_parent(fwnode);
|
|
|
|
|
|
|
|
fwnode_handle_put(fwnode);
|
|
|
|
|
|
|
|
return parent;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(fwnode_get_next_parent);
|
|
|
|
|
2020-11-21 02:02:25 +00:00
|
|
|
/**
|
|
|
|
* fwnode_get_next_parent_dev - Find device of closest ancestor fwnode
|
|
|
|
* @fwnode: firmware node
|
|
|
|
*
|
|
|
|
* Given a firmware node (@fwnode), this function finds its closest ancestor
|
|
|
|
* firmware node that has a corresponding struct device and returns that struct
|
|
|
|
* device.
|
|
|
|
*
|
|
|
|
* The caller of this function is expected to call put_device() on the returned
|
|
|
|
* device when they are done.
|
|
|
|
*/
|
|
|
|
struct device *fwnode_get_next_parent_dev(struct fwnode_handle *fwnode)
|
|
|
|
{
|
2021-05-18 06:48:43 +00:00
|
|
|
struct device *dev;
|
2020-11-21 02:02:25 +00:00
|
|
|
|
|
|
|
fwnode_handle_get(fwnode);
|
|
|
|
do {
|
|
|
|
fwnode = fwnode_get_next_parent(fwnode);
|
2021-05-18 06:48:43 +00:00
|
|
|
if (!fwnode)
|
|
|
|
return NULL;
|
|
|
|
dev = get_dev_from_fwnode(fwnode);
|
|
|
|
} while (!dev);
|
2020-11-21 02:02:25 +00:00
|
|
|
fwnode_handle_put(fwnode);
|
|
|
|
return dev;
|
|
|
|
}
|
|
|
|
|
2019-10-03 12:32:11 +00:00
|
|
|
/**
|
|
|
|
* fwnode_count_parents - Return the number of parents a node has
|
|
|
|
* @fwnode: The node the parents of which are to be counted
|
|
|
|
*
|
|
|
|
* Returns the number of parents a node has.
|
|
|
|
*/
|
|
|
|
unsigned int fwnode_count_parents(const struct fwnode_handle *fwnode)
|
|
|
|
{
|
|
|
|
struct fwnode_handle *__fwnode;
|
|
|
|
unsigned int count;
|
|
|
|
|
|
|
|
__fwnode = fwnode_get_parent(fwnode);
|
|
|
|
|
|
|
|
for (count = 0; __fwnode; count++)
|
|
|
|
__fwnode = fwnode_get_next_parent(__fwnode);
|
|
|
|
|
|
|
|
return count;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(fwnode_count_parents);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* fwnode_get_nth_parent - Return an nth parent of a node
|
|
|
|
* @fwnode: The node the parent of which is requested
|
|
|
|
* @depth: Distance of the parent from the node
|
|
|
|
*
|
|
|
|
* Returns the nth parent of a node. If there is no parent at the requested
|
|
|
|
* @depth, %NULL is returned. If @depth is 0, the functionality is equivalent to
|
|
|
|
* fwnode_handle_get(). For @depth == 1, it is fwnode_get_parent() and so on.
|
|
|
|
*
|
|
|
|
* The caller is responsible for calling fwnode_handle_put() for the returned
|
|
|
|
* node.
|
|
|
|
*/
|
|
|
|
struct fwnode_handle *fwnode_get_nth_parent(struct fwnode_handle *fwnode,
|
|
|
|
unsigned int depth)
|
|
|
|
{
|
|
|
|
unsigned int i;
|
|
|
|
|
|
|
|
fwnode_handle_get(fwnode);
|
|
|
|
|
|
|
|
for (i = 0; i < depth && fwnode; i++)
|
|
|
|
fwnode = fwnode_get_next_parent(fwnode);
|
|
|
|
|
|
|
|
return fwnode;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(fwnode_get_nth_parent);
|
|
|
|
|
2020-11-21 02:02:25 +00:00
|
|
|
/**
|
|
|
|
* fwnode_is_ancestor_of - Test if @test_ancestor is ancestor of @test_child
|
|
|
|
* @test_ancestor: Firmware which is tested for being an ancestor
|
|
|
|
* @test_child: Firmware which is tested for being the child
|
|
|
|
*
|
|
|
|
* A node is considered an ancestor of itself too.
|
|
|
|
*
|
|
|
|
* Returns true if @test_ancestor is an ancestor of @test_child.
|
|
|
|
* Otherwise, returns false.
|
|
|
|
*/
|
|
|
|
bool fwnode_is_ancestor_of(struct fwnode_handle *test_ancestor,
|
|
|
|
struct fwnode_handle *test_child)
|
|
|
|
{
|
|
|
|
if (!test_ancestor)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
fwnode_handle_get(test_child);
|
|
|
|
while (test_child) {
|
|
|
|
if (test_child == test_ancestor) {
|
|
|
|
fwnode_handle_put(test_child);
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
test_child = fwnode_get_next_parent(test_child);
|
|
|
|
}
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2014-11-04 13:03:59 +00:00
|
|
|
/**
|
2017-03-28 07:52:18 +00:00
|
|
|
* fwnode_get_next_child_node - Return the next child node handle for a node
|
|
|
|
* @fwnode: Firmware node to find the next child node for.
|
|
|
|
* @child: Handle to one of the node's child nodes or a %NULL handle.
|
2014-11-04 13:03:59 +00:00
|
|
|
*/
|
2017-07-21 11:39:36 +00:00
|
|
|
struct fwnode_handle *
|
|
|
|
fwnode_get_next_child_node(const struct fwnode_handle *fwnode,
|
|
|
|
struct fwnode_handle *child)
|
2014-11-04 13:03:59 +00:00
|
|
|
{
|
2017-06-06 09:37:37 +00:00
|
|
|
return fwnode_call_ptr_op(fwnode, get_next_child_node, child);
|
2014-11-04 13:03:59 +00:00
|
|
|
}
|
2017-03-28 07:52:18 +00:00
|
|
|
EXPORT_SYMBOL_GPL(fwnode_get_next_child_node);
|
|
|
|
|
2018-01-18 12:31:41 +00:00
|
|
|
/**
|
|
|
|
* fwnode_get_next_available_child_node - Return the next
|
|
|
|
* available child node handle for a node
|
|
|
|
* @fwnode: Firmware node to find the next child node for.
|
|
|
|
* @child: Handle to one of the node's child nodes or a %NULL handle.
|
|
|
|
*/
|
|
|
|
struct fwnode_handle *
|
|
|
|
fwnode_get_next_available_child_node(const struct fwnode_handle *fwnode,
|
|
|
|
struct fwnode_handle *child)
|
|
|
|
{
|
|
|
|
struct fwnode_handle *next_child = child;
|
|
|
|
|
|
|
|
if (!fwnode)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
do {
|
|
|
|
next_child = fwnode_get_next_child_node(fwnode, next_child);
|
2021-05-18 06:48:43 +00:00
|
|
|
if (!next_child)
|
|
|
|
return NULL;
|
|
|
|
} while (!fwnode_device_is_available(next_child));
|
2018-01-18 12:31:41 +00:00
|
|
|
|
|
|
|
return next_child;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(fwnode_get_next_available_child_node);
|
|
|
|
|
2017-03-28 07:52:18 +00:00
|
|
|
/**
|
|
|
|
* 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)
|
|
|
|
{
|
2021-06-04 16:50:47 +00:00
|
|
|
const struct fwnode_handle *fwnode = dev_fwnode(dev);
|
|
|
|
struct fwnode_handle *next;
|
2017-03-28 07:52:18 +00:00
|
|
|
|
2020-05-20 10:29:59 +00:00
|
|
|
/* Try to find a child in primary fwnode */
|
|
|
|
next = fwnode_get_next_child_node(fwnode, child);
|
|
|
|
if (next)
|
|
|
|
return next;
|
|
|
|
|
|
|
|
/* When no more children in primary, continue with secondary */
|
2020-07-16 18:27:47 +00:00
|
|
|
if (fwnode && !IS_ERR_OR_NULL(fwnode->secondary))
|
2020-05-20 10:29:59 +00:00
|
|
|
next = fwnode_get_next_child_node(fwnode->secondary, child);
|
|
|
|
|
|
|
|
return next;
|
2017-03-28 07:52:18 +00:00
|
|
|
}
|
2014-11-04 13:03:59 +00:00
|
|
|
EXPORT_SYMBOL_GPL(device_get_next_child_node);
|
|
|
|
|
2016-06-21 17:50:20 +00:00
|
|
|
/**
|
2017-03-28 07:52:19 +00:00
|
|
|
* fwnode_get_named_child_node - Return first matching named child node handle
|
|
|
|
* @fwnode: Firmware node to find the named child node for.
|
2016-06-21 17:50:20 +00:00
|
|
|
* @childname: String to match child node name against.
|
|
|
|
*/
|
2017-07-21 11:39:36 +00:00
|
|
|
struct fwnode_handle *
|
|
|
|
fwnode_get_named_child_node(const struct fwnode_handle *fwnode,
|
|
|
|
const char *childname)
|
2016-06-21 17:50:20 +00:00
|
|
|
{
|
2017-06-06 09:37:37 +00:00
|
|
|
return fwnode_call_ptr_op(fwnode, get_named_child_node, childname);
|
2016-06-21 17:50:20 +00:00
|
|
|
}
|
2017-03-28 07:52:19 +00:00
|
|
|
EXPORT_SYMBOL_GPL(fwnode_get_named_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)
|
|
|
|
{
|
|
|
|
return fwnode_get_named_child_node(dev_fwnode(dev), childname);
|
|
|
|
}
|
2016-06-21 17:50:20 +00:00
|
|
|
EXPORT_SYMBOL_GPL(device_get_named_child_node);
|
|
|
|
|
2017-03-28 07:52:22 +00:00
|
|
|
/**
|
|
|
|
* fwnode_handle_get - Obtain a reference to a device node
|
|
|
|
* @fwnode: Pointer to the device node to obtain the reference to.
|
2017-09-19 09:39:11 +00:00
|
|
|
*
|
|
|
|
* Returns the fwnode handle.
|
2017-03-28 07:52:22 +00:00
|
|
|
*/
|
2017-09-19 09:39:11 +00:00
|
|
|
struct fwnode_handle *fwnode_handle_get(struct fwnode_handle *fwnode)
|
2017-03-28 07:52:22 +00:00
|
|
|
{
|
2017-09-19 09:39:11 +00:00
|
|
|
if (!fwnode_has_op(fwnode, get))
|
|
|
|
return fwnode;
|
|
|
|
|
|
|
|
return fwnode_call_ptr_op(fwnode, get);
|
2017-03-28 07:52:22 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(fwnode_handle_get);
|
|
|
|
|
2014-11-04 13:03:59 +00:00
|
|
|
/**
|
|
|
|
* 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)
|
|
|
|
{
|
2017-06-06 09:37:37 +00:00
|
|
|
fwnode_call_void_op(fwnode, put);
|
2014-11-04 13:03:59 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(fwnode_handle_put);
|
|
|
|
|
2017-06-06 09:37:39 +00:00
|
|
|
/**
|
|
|
|
* fwnode_device_is_available - check if a device is available for use
|
|
|
|
* @fwnode: Pointer to the fwnode of the device.
|
2021-01-07 13:28:26 +00:00
|
|
|
*
|
|
|
|
* For fwnode node types that don't implement the .device_is_available()
|
|
|
|
* operation, this function returns true.
|
2017-06-06 09:37:39 +00:00
|
|
|
*/
|
2017-07-21 11:39:36 +00:00
|
|
|
bool fwnode_device_is_available(const struct fwnode_handle *fwnode)
|
2017-06-06 09:37:39 +00:00
|
|
|
{
|
2021-01-07 13:28:26 +00:00
|
|
|
if (!fwnode_has_op(fwnode, device_is_available))
|
|
|
|
return true;
|
|
|
|
|
2017-07-11 15:20:20 +00:00
|
|
|
return fwnode_call_bool_op(fwnode, device_is_available);
|
2017-06-06 09:37:39 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(fwnode_device_is_available);
|
|
|
|
|
2014-11-04 13:03:59 +00:00
|
|
|
/**
|
|
|
|
* 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;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(device_get_child_node_count);
|
2015-06-10 16:08:54 +00:00
|
|
|
|
2015-10-28 22:50:49 +00:00
|
|
|
bool device_dma_supported(struct device *dev)
|
|
|
|
{
|
2021-06-04 16:50:47 +00:00
|
|
|
const struct fwnode_handle *fwnode = dev_fwnode(dev);
|
|
|
|
|
2015-10-28 22:50:49 +00:00
|
|
|
/* For DT, this is always supported.
|
|
|
|
* For ACPI, this depends on CCA, which
|
|
|
|
* is determined by the acpi_dma_supported().
|
|
|
|
*/
|
2021-06-04 16:50:47 +00:00
|
|
|
if (is_of_node(fwnode))
|
2015-10-28 22:50:49 +00:00
|
|
|
return true;
|
|
|
|
|
2021-06-04 16:50:47 +00:00
|
|
|
return acpi_dma_supported(to_acpi_device_node(fwnode));
|
2015-10-28 22:50:49 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(device_dma_supported);
|
|
|
|
|
|
|
|
enum dev_dma_attr device_get_dma_attr(struct device *dev)
|
|
|
|
{
|
2021-06-04 16:50:47 +00:00
|
|
|
const struct fwnode_handle *fwnode = dev_fwnode(dev);
|
2015-10-28 22:50:49 +00:00
|
|
|
enum dev_dma_attr attr = DEV_DMA_NOT_SUPPORTED;
|
|
|
|
|
2021-06-04 16:50:47 +00:00
|
|
|
if (is_of_node(fwnode)) {
|
|
|
|
if (of_dma_is_coherent(to_of_node(fwnode)))
|
2015-10-28 22:50:49 +00:00
|
|
|
attr = DEV_DMA_COHERENT;
|
|
|
|
else
|
|
|
|
attr = DEV_DMA_NON_COHERENT;
|
|
|
|
} else
|
2021-06-04 16:50:47 +00:00
|
|
|
attr = acpi_get_dma_attr(to_acpi_device_node(fwnode));
|
2015-10-28 22:50:49 +00:00
|
|
|
|
|
|
|
return attr;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(device_get_dma_attr);
|
|
|
|
|
2015-08-12 22:06:26 +00:00
|
|
|
/**
|
2018-01-18 12:31:39 +00:00
|
|
|
* fwnode_get_phy_mode - Get phy mode for given firmware node
|
|
|
|
* @fwnode: Pointer to the given node
|
2015-08-12 22:06:26 +00:00
|
|
|
*
|
|
|
|
* 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.
|
|
|
|
*/
|
2018-01-18 12:31:39 +00:00
|
|
|
int fwnode_get_phy_mode(struct fwnode_handle *fwnode)
|
2015-08-12 22:06:26 +00:00
|
|
|
{
|
|
|
|
const char *pm;
|
|
|
|
int err, i;
|
|
|
|
|
2018-01-18 12:31:39 +00:00
|
|
|
err = fwnode_property_read_string(fwnode, "phy-mode", &pm);
|
2015-08-12 22:06:26 +00:00
|
|
|
if (err < 0)
|
2018-01-18 12:31:39 +00:00
|
|
|
err = fwnode_property_read_string(fwnode,
|
2015-08-12 22:06:26 +00:00
|
|
|
"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;
|
|
|
|
}
|
2018-01-18 12:31:39 +00:00
|
|
|
EXPORT_SYMBOL_GPL(fwnode_get_phy_mode);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* 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)
|
|
|
|
{
|
|
|
|
return fwnode_get_phy_mode(dev_fwnode(dev));
|
|
|
|
}
|
2015-08-12 22:06:26 +00:00
|
|
|
EXPORT_SYMBOL_GPL(device_get_phy_mode);
|
|
|
|
|
2018-01-18 12:31:40 +00:00
|
|
|
/**
|
|
|
|
* fwnode_irq_get - Get IRQ directly from a fwnode
|
|
|
|
* @fwnode: Pointer to the firmware node
|
|
|
|
* @index: Zero-based index of the IRQ
|
|
|
|
*
|
|
|
|
* Returns Linux IRQ number on success. Other values are determined
|
|
|
|
* accordingly to acpi_/of_ irq_get() operation.
|
|
|
|
*/
|
2021-06-04 16:50:47 +00:00
|
|
|
int fwnode_irq_get(const struct fwnode_handle *fwnode, unsigned int index)
|
2018-01-18 12:31:40 +00:00
|
|
|
{
|
|
|
|
struct resource res;
|
|
|
|
int ret;
|
|
|
|
|
2021-06-04 16:50:47 +00:00
|
|
|
if (is_of_node(fwnode))
|
|
|
|
return of_irq_get(to_of_node(fwnode), index);
|
2018-01-18 12:31:40 +00:00
|
|
|
|
|
|
|
ret = acpi_irq_get(ACPI_HANDLE_FWNODE(fwnode), index, &res);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
return res.start;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(fwnode_irq_get);
|
|
|
|
|
2021-12-03 21:23:54 +00:00
|
|
|
/**
|
|
|
|
* fwnode_iomap - Maps the memory mapped IO for a given fwnode
|
|
|
|
* @fwnode: Pointer to the firmware node
|
|
|
|
* @index: Index of the IO range
|
|
|
|
*
|
|
|
|
* Returns a pointer to the mapped memory.
|
|
|
|
*/
|
|
|
|
void __iomem *fwnode_iomap(struct fwnode_handle *fwnode, int index)
|
|
|
|
{
|
|
|
|
if (IS_ENABLED(CONFIG_OF_ADDRESS) && is_of_node(fwnode))
|
|
|
|
return of_iomap(to_of_node(fwnode), index);
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(fwnode_iomap);
|
|
|
|
|
2022-01-28 11:44:25 +00:00
|
|
|
/**
|
|
|
|
* fwnode_irq_get_byname - Get IRQ from a fwnode using its name
|
|
|
|
* @fwnode: Pointer to the firmware node
|
|
|
|
* @name: IRQ name
|
|
|
|
*
|
|
|
|
* Description:
|
|
|
|
* Find a match to the string @name in the 'interrupt-names' string array
|
|
|
|
* in _DSD for ACPI, or of_node for Device Tree. Then get the Linux IRQ
|
|
|
|
* number of the IRQ resource corresponding to the index of the matched
|
|
|
|
* string.
|
|
|
|
*
|
|
|
|
* Return:
|
|
|
|
* Linux IRQ number on success, or negative errno otherwise.
|
|
|
|
*/
|
|
|
|
int fwnode_irq_get_byname(const struct fwnode_handle *fwnode, const char *name)
|
|
|
|
{
|
|
|
|
int index;
|
|
|
|
|
|
|
|
if (!name)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
index = fwnode_property_match_string(fwnode, "interrupt-names", name);
|
|
|
|
if (index < 0)
|
|
|
|
return index;
|
|
|
|
|
|
|
|
return fwnode_irq_get(fwnode, index);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(fwnode_irq_get_byname);
|
|
|
|
|
2017-03-28 07:52:21 +00:00
|
|
|
/**
|
2018-12-18 15:52:39 +00:00
|
|
|
* fwnode_graph_get_next_endpoint - Get next endpoint firmware node
|
2017-03-28 07:52:21 +00:00
|
|
|
* @fwnode: Pointer to the parent firmware node
|
|
|
|
* @prev: Previous endpoint node or %NULL to get the first
|
|
|
|
*
|
|
|
|
* Returns an endpoint firmware node pointer or %NULL if no more endpoints
|
|
|
|
* are available.
|
|
|
|
*/
|
|
|
|
struct fwnode_handle *
|
2017-07-21 11:39:36 +00:00
|
|
|
fwnode_graph_get_next_endpoint(const struct fwnode_handle *fwnode,
|
2017-03-28 07:52:21 +00:00
|
|
|
struct fwnode_handle *prev)
|
|
|
|
{
|
2021-08-06 22:09:05 +00:00
|
|
|
const struct fwnode_handle *parent;
|
|
|
|
struct fwnode_handle *ep;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If this function is in a loop and the previous iteration returned
|
|
|
|
* an endpoint from fwnode->secondary, then we need to use the secondary
|
|
|
|
* as parent rather than @fwnode.
|
|
|
|
*/
|
|
|
|
if (prev)
|
|
|
|
parent = fwnode_graph_get_port_parent(prev);
|
|
|
|
else
|
|
|
|
parent = fwnode;
|
|
|
|
|
|
|
|
ep = fwnode_call_ptr_op(parent, graph_get_next_endpoint, prev);
|
|
|
|
|
|
|
|
if (IS_ERR_OR_NULL(ep) &&
|
|
|
|
!IS_ERR_OR_NULL(parent) && !IS_ERR_OR_NULL(parent->secondary))
|
|
|
|
ep = fwnode_graph_get_next_endpoint(parent->secondary, NULL);
|
|
|
|
|
|
|
|
return ep;
|
2017-03-28 07:52:21 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(fwnode_graph_get_next_endpoint);
|
|
|
|
|
2017-06-06 09:37:41 +00:00
|
|
|
/**
|
|
|
|
* fwnode_graph_get_port_parent - Return the device fwnode of a port endpoint
|
|
|
|
* @endpoint: Endpoint firmware node of the port
|
|
|
|
*
|
|
|
|
* Return: the firmware node of the device the @endpoint belongs to.
|
|
|
|
*/
|
|
|
|
struct fwnode_handle *
|
2017-07-21 11:39:36 +00:00
|
|
|
fwnode_graph_get_port_parent(const struct fwnode_handle *endpoint)
|
2017-06-06 09:37:41 +00:00
|
|
|
{
|
|
|
|
struct fwnode_handle *port, *parent;
|
|
|
|
|
|
|
|
port = fwnode_get_parent(endpoint);
|
|
|
|
parent = fwnode_call_ptr_op(port, graph_get_port_parent);
|
|
|
|
|
|
|
|
fwnode_handle_put(port);
|
|
|
|
|
|
|
|
return parent;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(fwnode_graph_get_port_parent);
|
|
|
|
|
2017-03-28 07:52:21 +00:00
|
|
|
/**
|
|
|
|
* fwnode_graph_get_remote_port_parent - Return fwnode of a remote device
|
|
|
|
* @fwnode: Endpoint firmware node pointing to the remote endpoint
|
|
|
|
*
|
|
|
|
* Extracts firmware node of a remote device the @fwnode points to.
|
|
|
|
*/
|
|
|
|
struct fwnode_handle *
|
2017-07-21 11:39:36 +00:00
|
|
|
fwnode_graph_get_remote_port_parent(const struct fwnode_handle *fwnode)
|
2017-03-28 07:52:21 +00:00
|
|
|
{
|
2017-06-06 09:37:41 +00:00
|
|
|
struct fwnode_handle *endpoint, *parent;
|
2017-03-28 07:52:21 +00:00
|
|
|
|
2017-06-06 09:37:41 +00:00
|
|
|
endpoint = fwnode_graph_get_remote_endpoint(fwnode);
|
|
|
|
parent = fwnode_graph_get_port_parent(endpoint);
|
2017-03-28 07:52:21 +00:00
|
|
|
|
2017-06-06 09:37:41 +00:00
|
|
|
fwnode_handle_put(endpoint);
|
2017-03-28 07:52:21 +00:00
|
|
|
|
|
|
|
return parent;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(fwnode_graph_get_remote_port_parent);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* fwnode_graph_get_remote_port - Return fwnode of a remote port
|
|
|
|
* @fwnode: Endpoint firmware node pointing to the remote endpoint
|
|
|
|
*
|
|
|
|
* Extracts firmware node of a remote port the @fwnode points to.
|
|
|
|
*/
|
2017-07-21 11:39:36 +00:00
|
|
|
struct fwnode_handle *
|
|
|
|
fwnode_graph_get_remote_port(const struct fwnode_handle *fwnode)
|
2017-03-28 07:52:21 +00:00
|
|
|
{
|
2017-06-06 09:37:38 +00:00
|
|
|
return fwnode_get_next_parent(fwnode_graph_get_remote_endpoint(fwnode));
|
2017-03-28 07:52:21 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(fwnode_graph_get_remote_port);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* fwnode_graph_get_remote_endpoint - Return fwnode of a remote endpoint
|
|
|
|
* @fwnode: Endpoint firmware node pointing to the remote endpoint
|
|
|
|
*
|
|
|
|
* Extracts firmware node of a remote endpoint the @fwnode points to.
|
|
|
|
*/
|
|
|
|
struct fwnode_handle *
|
2017-07-21 11:39:36 +00:00
|
|
|
fwnode_graph_get_remote_endpoint(const struct fwnode_handle *fwnode)
|
2017-03-28 07:52:21 +00:00
|
|
|
{
|
2017-06-06 09:37:38 +00:00
|
|
|
return fwnode_call_ptr_op(fwnode, graph_get_remote_endpoint);
|
2017-03-28 07:52:21 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(fwnode_graph_get_remote_endpoint);
|
2017-03-28 07:52:25 +00:00
|
|
|
|
2021-12-01 12:59:33 +00:00
|
|
|
static bool fwnode_graph_remote_available(struct fwnode_handle *ep)
|
|
|
|
{
|
|
|
|
struct fwnode_handle *dev_node;
|
|
|
|
bool available;
|
|
|
|
|
|
|
|
dev_node = fwnode_graph_get_remote_port_parent(ep);
|
|
|
|
available = fwnode_device_is_available(dev_node);
|
|
|
|
fwnode_handle_put(dev_node);
|
|
|
|
|
|
|
|
return available;
|
|
|
|
}
|
|
|
|
|
2019-04-02 10:30:37 +00:00
|
|
|
/**
|
|
|
|
* fwnode_graph_get_endpoint_by_id - get endpoint by port and endpoint numbers
|
|
|
|
* @fwnode: parent fwnode_handle containing the graph
|
|
|
|
* @port: identifier of the port node
|
|
|
|
* @endpoint: identifier of the endpoint node under the port node
|
|
|
|
* @flags: fwnode lookup flags
|
|
|
|
*
|
|
|
|
* Return the fwnode handle of the local endpoint corresponding the port and
|
|
|
|
* endpoint IDs or NULL if not found.
|
|
|
|
*
|
|
|
|
* If FWNODE_GRAPH_ENDPOINT_NEXT is passed in @flags and the specified endpoint
|
|
|
|
* has not been found, look for the closest endpoint ID greater than the
|
|
|
|
* specified one and return the endpoint that corresponds to it, if present.
|
|
|
|
*
|
2021-12-01 12:59:30 +00:00
|
|
|
* Does not return endpoints that belong to disabled devices or endpoints that
|
|
|
|
* are unconnected, unless FWNODE_GRAPH_DEVICE_DISABLED is passed in @flags.
|
2019-04-02 10:30:37 +00:00
|
|
|
*
|
|
|
|
* The returned endpoint needs to be released by calling fwnode_handle_put() on
|
|
|
|
* it when it is not needed any more.
|
|
|
|
*/
|
|
|
|
struct fwnode_handle *
|
|
|
|
fwnode_graph_get_endpoint_by_id(const struct fwnode_handle *fwnode,
|
|
|
|
u32 port, u32 endpoint, unsigned long flags)
|
|
|
|
{
|
2021-12-01 12:59:34 +00:00
|
|
|
struct fwnode_handle *ep, *best_ep = NULL;
|
2019-04-02 10:30:37 +00:00
|
|
|
unsigned int best_ep_id = 0;
|
|
|
|
bool endpoint_next = flags & FWNODE_GRAPH_ENDPOINT_NEXT;
|
|
|
|
bool enabled_only = !(flags & FWNODE_GRAPH_DEVICE_DISABLED);
|
|
|
|
|
2021-12-01 12:59:34 +00:00
|
|
|
fwnode_graph_for_each_endpoint(fwnode, ep) {
|
2019-04-02 10:30:37 +00:00
|
|
|
struct fwnode_endpoint fwnode_ep = { 0 };
|
|
|
|
int ret;
|
|
|
|
|
2021-12-01 12:59:33 +00:00
|
|
|
if (enabled_only && !fwnode_graph_remote_available(ep))
|
|
|
|
continue;
|
2019-04-02 10:30:37 +00:00
|
|
|
|
|
|
|
ret = fwnode_graph_parse_endpoint(ep, &fwnode_ep);
|
|
|
|
if (ret < 0)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (fwnode_ep.port != port)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (fwnode_ep.id == endpoint)
|
|
|
|
return ep;
|
|
|
|
|
|
|
|
if (!endpoint_next)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If the endpoint that has just been found is not the first
|
|
|
|
* matching one and the ID of the one found previously is closer
|
|
|
|
* to the requested endpoint ID, skip it.
|
|
|
|
*/
|
|
|
|
if (fwnode_ep.id < endpoint ||
|
|
|
|
(best_ep && best_ep_id < fwnode_ep.id))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
fwnode_handle_put(best_ep);
|
|
|
|
best_ep = fwnode_handle_get(ep);
|
|
|
|
best_ep_id = fwnode_ep.id;
|
|
|
|
}
|
|
|
|
|
2021-08-06 22:09:06 +00:00
|
|
|
return best_ep;
|
2019-04-02 10:30:37 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(fwnode_graph_get_endpoint_by_id);
|
|
|
|
|
2021-12-01 12:59:33 +00:00
|
|
|
/**
|
|
|
|
* fwnode_graph_get_endpoint_count - Count endpoints on a device node
|
|
|
|
* @fwnode: The node related to a device
|
|
|
|
* @flags: fwnode lookup flags
|
|
|
|
* Count endpoints in a device node.
|
|
|
|
*
|
|
|
|
* If FWNODE_GRAPH_DEVICE_DISABLED flag is specified, also unconnected endpoints
|
|
|
|
* and endpoints connected to disabled devices are counted.
|
|
|
|
*/
|
|
|
|
unsigned int fwnode_graph_get_endpoint_count(struct fwnode_handle *fwnode,
|
|
|
|
unsigned long flags)
|
|
|
|
{
|
|
|
|
struct fwnode_handle *ep;
|
|
|
|
unsigned int count = 0;
|
|
|
|
|
|
|
|
fwnode_graph_for_each_endpoint(fwnode, ep) {
|
|
|
|
if (flags & FWNODE_GRAPH_DEVICE_DISABLED ||
|
|
|
|
fwnode_graph_remote_available(ep))
|
|
|
|
count++;
|
|
|
|
}
|
|
|
|
|
|
|
|
return count;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(fwnode_graph_get_endpoint_count);
|
|
|
|
|
2017-03-28 07:52:25 +00:00
|
|
|
/**
|
|
|
|
* fwnode_graph_parse_endpoint - parse common endpoint node properties
|
|
|
|
* @fwnode: pointer to endpoint fwnode_handle
|
|
|
|
* @endpoint: pointer to the fwnode endpoint data structure
|
|
|
|
*
|
|
|
|
* Parse @fwnode representing a graph endpoint node and store the
|
|
|
|
* information in @endpoint. The caller must hold a reference to
|
|
|
|
* @fwnode.
|
|
|
|
*/
|
2017-07-21 11:39:36 +00:00
|
|
|
int fwnode_graph_parse_endpoint(const struct fwnode_handle *fwnode,
|
2017-03-28 07:52:25 +00:00
|
|
|
struct fwnode_endpoint *endpoint)
|
|
|
|
{
|
|
|
|
memset(endpoint, 0, sizeof(*endpoint));
|
|
|
|
|
2017-06-06 09:37:38 +00:00
|
|
|
return fwnode_call_int_op(fwnode, graph_parse_endpoint, endpoint);
|
2017-03-28 07:52:25 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(fwnode_graph_parse_endpoint);
|
2017-12-13 07:20:49 +00:00
|
|
|
|
2018-02-09 15:38:36 +00:00
|
|
|
const void *device_get_match_data(struct device *dev)
|
2017-12-13 07:20:49 +00:00
|
|
|
{
|
2018-02-09 15:38:36 +00:00
|
|
|
return fwnode_call_ptr_op(dev_fwnode(dev), device_get_match_data, dev);
|
2017-12-13 07:20:49 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(device_get_match_data);
|
2020-09-07 12:05:31 +00:00
|
|
|
|
|
|
|
static void *
|
|
|
|
fwnode_graph_devcon_match(struct fwnode_handle *fwnode, const char *con_id,
|
|
|
|
void *data, devcon_match_fn_t match)
|
|
|
|
{
|
|
|
|
struct fwnode_handle *node;
|
|
|
|
struct fwnode_handle *ep;
|
|
|
|
void *ret;
|
|
|
|
|
|
|
|
fwnode_graph_for_each_endpoint(fwnode, ep) {
|
|
|
|
node = fwnode_graph_get_remote_port_parent(ep);
|
2021-12-01 12:59:29 +00:00
|
|
|
if (!fwnode_device_is_available(node)) {
|
|
|
|
fwnode_handle_put(node);
|
2020-09-07 12:05:31 +00:00
|
|
|
continue;
|
2021-12-01 12:59:29 +00:00
|
|
|
}
|
2020-09-07 12:05:31 +00:00
|
|
|
|
|
|
|
ret = match(node, con_id, data);
|
|
|
|
fwnode_handle_put(node);
|
|
|
|
if (ret) {
|
|
|
|
fwnode_handle_put(ep);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void *
|
|
|
|
fwnode_devcon_match(struct fwnode_handle *fwnode, const char *con_id,
|
|
|
|
void *data, devcon_match_fn_t match)
|
|
|
|
{
|
|
|
|
struct fwnode_handle *node;
|
|
|
|
void *ret;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; ; i++) {
|
|
|
|
node = fwnode_find_reference(fwnode, con_id, i);
|
|
|
|
if (IS_ERR(node))
|
|
|
|
break;
|
|
|
|
|
|
|
|
ret = match(node, NULL, data);
|
|
|
|
fwnode_handle_put(node);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* fwnode_connection_find_match - Find connection from a device node
|
|
|
|
* @fwnode: Device node with the connection
|
|
|
|
* @con_id: Identifier for the connection
|
|
|
|
* @data: Data for the match function
|
|
|
|
* @match: Function to check and convert the connection description
|
|
|
|
*
|
|
|
|
* Find a connection with unique identifier @con_id between @fwnode and another
|
|
|
|
* device node. @match will be used to convert the connection description to
|
|
|
|
* data the caller is expecting to be returned.
|
|
|
|
*/
|
|
|
|
void *fwnode_connection_find_match(struct fwnode_handle *fwnode,
|
|
|
|
const char *con_id, void *data,
|
|
|
|
devcon_match_fn_t match)
|
|
|
|
{
|
|
|
|
void *ret;
|
|
|
|
|
|
|
|
if (!fwnode || !match)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
ret = fwnode_graph_devcon_match(fwnode, con_id, data, match);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
return fwnode_devcon_match(fwnode, con_id, data, match);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(fwnode_connection_find_match);
|