4 * Copyright (c) 2015 Samsung Electronics Co., Ltd.
6 * Licensed under the Apache License, Version 2.0 (the License);
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
20 #ifndef __HW_COMMON_H__
21 #define __HW_COMMON_H__
33 #define MAKE_TAG_CONSTANT(A,B,C,D) (((A) << 24) | ((B) << 16) | ((C) << 8) | (D))
34 #define HARDWARE_INFO_TAG MAKE_TAG_CONSTANT('T','H','I','T')
38 /* magic must be initialized to HARDWARE_INFO_TAG */
43 uint16_t device_version;
52 /* reserved for future use */
55 int (*open)(struct hw_info *info,
56 const char *id, struct hw_common **common);
58 int (*close)(struct hw_common *common);
62 /* indicate to this device information structure */
66 #define MAKE_VERSION(maj,min) \
67 ((((maj) & 0xff) << 8) | ((min) & 0xff))
70 * Version of the struct hw_info
72 #define HARDWARE_INFO_VERSION MAKE_VERSION(1,0)
75 * Name of the hardware info symbolic (Tizen Hardware Info)
77 #define HARDWARE_INFO_SYM TizenHwInfo
79 int hw_get_info(const char *id, const struct hw_info **info);
82 * Structure define of hardware info module
83 * All hardware module should be use below define
84 * to make a specific structure for Tizen HAL.
85 * hw_get_info function will load a hw_info structure
86 * by using TizenHwInfo name at runtime.
87 * TizenHwInfo means Tizen Hardware Info.
89 #define HARDWARE_MODULE_STRUCTURE \
90 __attribute__ ((visibility("default"))) \
91 struct hw_info HARDWARE_INFO_SYM
94 #define container_of(ptr, type, member) ({ \
95 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
96 (type *)( (char *)__mptr - offsetof(type,member) );})