| Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame^] | 1 | /* |
| 2 | * videobuf2-memops.h - generic memory handling routines for videobuf2 |
| 3 | * |
| 4 | * Copyright (C) 2010 Samsung Electronics |
| 5 | * |
| 6 | * Author: Pawel Osciak <pawel@osciak.com> |
| 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 | |
| 17 | #include <media/videobuf2-v4l2.h> |
| 18 | #include <linux/mm.h> |
| 19 | |
| 20 | /** |
| 21 | * struct vb2_vmarea_handler - common vma refcount tracking handler |
| 22 | * |
| 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 | |
| 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); |
| 39 | |
| 40 | #endif |