| Rafael J. Wysocki | b31384f | 2014-11-04 01:28:56 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * property.h - Unified device property interface. |
| 3 | * |
| 4 | * Copyright (C) 2014, Intel Corporation |
| 5 | * Authors: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
| 6 | * Mika Westerberg <mika.westerberg@linux.intel.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | */ |
| 12 | |
| 13 | #ifndef _LINUX_PROPERTY_H_ |
| 14 | #define _LINUX_PROPERTY_H_ |
| 15 | |
| 16 | #include <linux/types.h> |
| 17 | |
| 18 | struct device; |
| 19 | |
| 20 | enum dev_prop_type { |
| 21 | DEV_PROP_U8, |
| 22 | DEV_PROP_U16, |
| 23 | DEV_PROP_U32, |
| 24 | DEV_PROP_U64, |
| 25 | DEV_PROP_STRING, |
| 26 | DEV_PROP_MAX, |
| 27 | }; |
| 28 | |
| 29 | bool device_property_present(struct device *dev, const char *propname); |
| 30 | int device_property_read_u8_array(struct device *dev, const char *propname, |
| 31 | u8 *val, size_t nval); |
| 32 | int device_property_read_u16_array(struct device *dev, const char *propname, |
| 33 | u16 *val, size_t nval); |
| 34 | int device_property_read_u32_array(struct device *dev, const char *propname, |
| 35 | u32 *val, size_t nval); |
| 36 | int device_property_read_u64_array(struct device *dev, const char *propname, |
| 37 | u64 *val, size_t nval); |
| 38 | int device_property_read_string_array(struct device *dev, const char *propname, |
| 39 | const char **val, size_t nval); |
| 40 | int device_property_read_string(struct device *dev, const char *propname, |
| 41 | const char **val); |
| 42 | |
| 43 | static inline bool device_property_read_bool(struct device *dev, |
| 44 | const char *propname) |
| 45 | { |
| 46 | return device_property_present(dev, propname); |
| 47 | } |
| 48 | |
| 49 | static inline int device_property_read_u8(struct device *dev, |
| 50 | const char *propname, u8 *val) |
| 51 | { |
| 52 | return device_property_read_u8_array(dev, propname, val, 1); |
| 53 | } |
| 54 | |
| 55 | static inline int device_property_read_u16(struct device *dev, |
| 56 | const char *propname, u16 *val) |
| 57 | { |
| 58 | return device_property_read_u16_array(dev, propname, val, 1); |
| 59 | } |
| 60 | |
| 61 | static inline int device_property_read_u32(struct device *dev, |
| 62 | const char *propname, u32 *val) |
| 63 | { |
| 64 | return device_property_read_u32_array(dev, propname, val, 1); |
| 65 | } |
| 66 | |
| 67 | static inline int device_property_read_u64(struct device *dev, |
| 68 | const char *propname, u64 *val) |
| 69 | { |
| 70 | return device_property_read_u64_array(dev, propname, val, 1); |
| 71 | } |
| 72 | |
| 73 | #endif /* _LINUX_PROPERTY_H_ */ |