74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
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/*
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* property.h - 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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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef _LINUX_PROPERTY_H_
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#define _LINUX_PROPERTY_H_
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#include <linux/types.h>
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struct device;
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enum dev_prop_type {
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DEV_PROP_U8,
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DEV_PROP_U16,
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DEV_PROP_U32,
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DEV_PROP_U64,
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DEV_PROP_STRING,
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DEV_PROP_MAX,
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};
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bool device_property_present(struct device *dev, const char *propname);
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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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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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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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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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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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int device_property_read_string(struct device *dev, const char *propname,
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const char **val);
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static inline bool device_property_read_bool(struct device *dev,
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const char *propname)
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{
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return device_property_present(dev, propname);
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}
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static inline int device_property_read_u8(struct device *dev,
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const char *propname, u8 *val)
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{
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return device_property_read_u8_array(dev, propname, val, 1);
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}
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static inline int device_property_read_u16(struct device *dev,
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const char *propname, u16 *val)
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{
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return device_property_read_u16_array(dev, propname, val, 1);
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}
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static inline int device_property_read_u32(struct device *dev,
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const char *propname, u32 *val)
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{
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return device_property_read_u32_array(dev, propname, val, 1);
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}
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static inline int device_property_read_u64(struct device *dev,
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const char *propname, u64 *val)
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{
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return device_property_read_u64_array(dev, propname, val, 1);
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}
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#endif /* _LINUX_PROPERTY_H_ */
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