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004cc378 MS |
1 | /* |
2 | * videobuf2-memops.h - generic memory handling routines for videobuf2 | |
3 | * | |
4 | * Copyright (C) 2010 Samsung Electronics | |
5 | * | |
95072084 | 6 | * Author: Pawel Osciak <pawel@osciak.com> |
004cc378 MS |
7 | * Marek Szyprowski <m.szyprowski@samsung.com> |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation. | |
12 | */ | |
13 | ||
14 | #ifndef _MEDIA_VIDEOBUF2_MEMOPS_H | |
15 | #define _MEDIA_VIDEOBUF2_MEMOPS_H | |
16 | ||
c139990e | 17 | #include <media/videobuf2-v4l2.h> |
21fb0cb7 | 18 | #include <linux/mm.h> |
004cc378 MS |
19 | |
20 | /** | |
b6836a6f MCC |
21 | * struct vb2_vmarea_handler - common vma refcount tracking handler |
22 | * | |
004cc378 MS |
23 | * @refcount: pointer to refcount entry in the buffer |
24 | * @put: callback to function that decreases buffer refcount | |
25 | * @arg: argument for @put callback | |
26 | */ | |
27 | struct vb2_vmarea_handler { | |
28 | atomic_t *refcount; | |
29 | void (*put)(void *arg); | |
30 | void *arg; | |
31 | }; | |
32 | ||
33 | extern const struct vm_operations_struct vb2_common_vm_ops; | |
34 | ||
21fb0cb7 JK |
35 | struct frame_vector *vb2_create_framevec(unsigned long start, |
36 | unsigned long length, | |
37 | bool write); | |
38 | void vb2_destroy_framevec(struct frame_vector *vec); | |
004cc378 MS |
39 | |
40 | #endif |