blob: 4b5b84f93538ed4cc808dbc6cfdf18a448a5abab [file] [log] [blame]
* videobuf2-memops.h - generic memory handling routines for videobuf2
* Copyright (C) 2010 Samsung Electronics
* Author: Pawel Osciak <>
* Marek Szyprowski <>
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation.
#include <media/videobuf2-v4l2.h>
#include <linux/mm.h>
#include <linux/refcount.h>
* struct vb2_vmarea_handler - common vma refcount tracking handler.
* @refcount: pointer to &refcount_t entry in the buffer.
* @put: callback to function that decreases buffer refcount.
* @arg: argument for @put callback.
struct vb2_vmarea_handler {
refcount_t *refcount;
void (*put)(void *arg);
void *arg;
extern const struct vm_operations_struct vb2_common_vm_ops;
struct frame_vector *vb2_create_framevec(unsigned long start,
unsigned long length,
bool write);
void vb2_destroy_framevec(struct frame_vector *vec);