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1 /*
2  * Copyright (c) 2020-2021 Huawei Device Co., Ltd.
3  *
4  * HDF is dual licensed: you can use it either under the terms of
5  * the GPL, or the BSD license, at your option.
6  * See the LICENSE file in the root of this repository for complete details.
7  */
8 
9 #ifndef OSAL_CDEV_H
10 #define OSAL_CDEV_H
11 
12 #include "osal_cdev_adapter.h"
13 
14 #ifdef __cplusplus
15 extern "C" {
16 #endif /* __cplusplus */
17 
18 #ifndef __user
19 #define __user
20 #endif
21 
22 struct OsalCdev;
23 struct file;
24 
25 struct OsalCdevOps {
26     int64_t (*seek)(struct file *filep, int64_t offset, int whence);
27     ssize_t (*read)(struct file *filep, char __user *buffer, size_t buflen, int64_t *offset);
28     ssize_t (*write)(struct file *filep, const char __user *buffer, size_t buflen, int64_t *offset);
29     unsigned int (*poll)(struct file *filep, poll_table *pollTable);
30     long (*ioctl)(struct file *filep, unsigned int cmd, unsigned long arg);
31     int (*open)(struct OsalCdev *cdev, struct file *filep);
32     int (*release)(struct OsalCdev *cdev, struct file *filep);
33 };
34 
35 struct OsalCdev *OsalAllocCdev(const struct OsalCdevOps *fops);
36 int OsalRegisterCdev(struct OsalCdev *cdev, const char *name, unsigned int mode, void *priv);
37 void OsalUnregisterCdev(struct OsalCdev *cdev);
38 void OsalFreeCdev(struct OsalCdev *cdev);
39 
40 void *OsalGetCdevPriv(struct OsalCdev *cdev);
41 
42 void OsalSetFilePriv(struct file *filep, void *priv);
43 void *OsalGetFilePriv(struct file *filep);
44 
45 #ifdef __cplusplus
46 }
47 #endif /* __cplusplus */
48 
49 #endif /* OSAL_CDEV_H */
50 /** @} */
51