1 /* Copyright (c) 2012, 2016, The Linux Foundation. All rights reserved.
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10  *       disclaimer in the documentation and/or other materials provided
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14  *       from this software without specific prior written permission.
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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 // System dependency
37 #include <stdlib.h>
38 
39 #define member_of(ptr, type, member) ({ \
40   const typeof(((type *)0)->member) *__mptr = (ptr); \
41   (type *)((char *)__mptr - offsetof(type,member));})
42 
43 struct cam_list {
44   struct cam_list *next, *prev;
45 };
46 
cam_list_init(struct cam_list * ptr)47 static inline void cam_list_init(struct cam_list *ptr)
48 {
49   ptr->next = ptr;
50   ptr->prev = ptr;
51 }
52 
cam_list_add_tail_node(struct cam_list * item,struct cam_list * head)53 static inline void cam_list_add_tail_node(struct cam_list *item,
54   struct cam_list *head)
55 {
56   struct cam_list *prev = head->prev;
57 
58   head->prev = item;
59   item->next = head;
60   item->prev = prev;
61   prev->next = item;
62 }
63 
cam_list_insert_before_node(struct cam_list * item,struct cam_list * node)64 static inline void cam_list_insert_before_node(struct cam_list *item,
65   struct cam_list *node)
66 {
67   item->next = node;
68   item->prev = node->prev;
69   item->prev->next = item;
70   node->prev = item;
71 }
72 
cam_list_del_node(struct cam_list * ptr)73 static inline void cam_list_del_node(struct cam_list *ptr)
74 {
75   struct cam_list *prev = ptr->prev;
76   struct cam_list *next = ptr->next;
77 
78   next->prev = ptr->prev;
79   prev->next = ptr->next;
80   ptr->next = ptr;
81   ptr->prev = ptr;
82 }
83 
84 #endif /* __CAMLIST_H */
85