cam_list.h revision 6f83d735d8e3b918da42e6b559fcd0efb78133e5 
1/* Copyright (c) 2012, The Linux Foundation. All rights reserved.
2 *
3 * Redistribution and use in source and binary forms, with or without
4 * modification, are permitted provided that the following conditions are
5 * met:
6 *     * Redistributions of source code must retain the above copyright
7 *       notice, this list of conditions and the following disclaimer.
8 *     * Redistributions in binary form must reproduce the above
9 *       copyright notice, this list of conditions and the following
10 *       disclaimer in the documentation and/or other materials provided
11 *       with the distribution.
12 *     * Neither the name of The Linux Foundation nor the names of its
13 *       contributors may be used to endorse or promote products derived
14 *       from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
23 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
25 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
26 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 */
29
30/* This file is a slave copy from /vendor/qcom/propreitary/mm-cammera/common,
31 * Please do not modify it directly here. */
32
33#ifndef __CAMLIST_H
34#define __CAMLIST_H
35
36#include <stddef.h>
37
38#define member_of(ptr, type, member) ({ \
39  const typeof(((type *)0)->member) *__mptr = (ptr); \
40  (type *)((char *)__mptr - offsetof(type,member));})
41
42struct cam_list {
43  struct cam_list *next, *prev;
44};
45
46static inline void cam_list_init(struct cam_list *ptr)
47{
48  ptr->next = ptr;
49  ptr->prev = ptr;
50}
51
52static inline void cam_list_add_tail_node(struct cam_list *item,
53  struct cam_list *head)
54{
55  struct cam_list *prev = head->prev;
56
57  head->prev = item;
58  item->next = head;
59  item->prev = prev;
60  prev->next = item;
61}
62
63static inline void cam_list_insert_before_node(struct cam_list *item,
64  struct cam_list *node)
65{
66  item->next = node;
67  item->prev = node->prev;
68  item->prev->next = item;
69  node->prev = item;
70}
71
72static inline void cam_list_del_node(struct cam_list *ptr)
73{
74  struct cam_list *prev = ptr->prev;
75  struct cam_list *next = ptr->next;
76
77  next->prev = ptr->prev;
78  prev->next = ptr->next;
79  ptr->next = ptr;
80  ptr->prev = ptr;
81}
82
83#endif /* __CAMLIST_H */
84