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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 | 2 | /* |
a53c8fab | 3 | * Copyright IBM Corp. 2004 All Rights Reserved. |
1da177e4 LT |
4 | * |
5 | * Tape class device support | |
6 | * | |
7 | * Author: Stefan Bader <shbader@de.ibm.com> | |
8 | * Based on simple class device code by Greg K-H | |
9 | */ | |
10 | #ifndef __TAPE_CLASS_H__ | |
11 | #define __TAPE_CLASS_H__ | |
12 | ||
13 | #include <linux/init.h> | |
14 | #include <linux/module.h> | |
15 | #include <linux/fs.h> | |
16 | #include <linux/major.h> | |
1da177e4 LT |
17 | #include <linux/cdev.h> |
18 | ||
19 | #include <linux/device.h> | |
20 | #include <linux/kdev_t.h> | |
21 | ||
22 | #define TAPECLASS_NAME_LEN 32 | |
23 | ||
24 | struct tape_class_device { | |
7f021ce1 CH |
25 | struct cdev *char_device; |
26 | struct device *class_device; | |
1da177e4 LT |
27 | char device_name[TAPECLASS_NAME_LEN]; |
28 | char mode_name[TAPECLASS_NAME_LEN]; | |
29 | }; | |
30 | ||
31 | /* | |
32 | * Register a tape device and return a pointer to the tape class device | |
33 | * created by the call. | |
34 | * | |
35 | * device | |
36 | * The pointer to the struct device of the physical (base) device. | |
37 | * dev | |
38 | * The intended major/minor number. The major number may be 0 to | |
39 | * get a dynamic major number. | |
40 | * fops | |
41 | * The pointer to the drivers file operations for the tape device. | |
42 | * device_name | |
43 | * Pointer to the logical device name (will also be used as kobject name | |
44 | * of the cdev). This can also be called the name of the tape class | |
45 | * device. | |
46 | * mode_name | |
47 | * Points to the name of the tape mode. This creates a link with that | |
48 | * name from the physical device to the logical device (class). | |
49 | */ | |
50 | struct tape_class_device *register_tape_dev( | |
51 | struct device * device, | |
52 | dev_t dev, | |
9c2e08c5 | 53 | const struct file_operations *fops, |
1da177e4 LT |
54 | char * device_name, |
55 | char * node_name | |
56 | ); | |
92bf435f | 57 | void unregister_tape_dev(struct device *device, struct tape_class_device *tcd); |
1da177e4 LT |
58 | |
59 | #endif /* __TAPE_CLASS_H__ */ |