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1 | /* |
2 | * (C) Copyright IBM Corp. 2004 All Rights Reserved. | |
e018ba1f | 3 | * tape_class.h |
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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> | |
17 | #include <linux/kobject.h> | |
18 | #include <linux/kobj_map.h> | |
19 | #include <linux/cdev.h> | |
20 | ||
21 | #include <linux/device.h> | |
22 | #include <linux/kdev_t.h> | |
23 | ||
24 | #define TAPECLASS_NAME_LEN 32 | |
25 | ||
26 | struct tape_class_device { | |
7f021ce1 CH |
27 | struct cdev *char_device; |
28 | struct device *class_device; | |
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29 | char device_name[TAPECLASS_NAME_LEN]; |
30 | char mode_name[TAPECLASS_NAME_LEN]; | |
31 | }; | |
32 | ||
33 | /* | |
34 | * Register a tape device and return a pointer to the tape class device | |
35 | * created by the call. | |
36 | * | |
37 | * device | |
38 | * The pointer to the struct device of the physical (base) device. | |
39 | * dev | |
40 | * The intended major/minor number. The major number may be 0 to | |
41 | * get a dynamic major number. | |
42 | * fops | |
43 | * The pointer to the drivers file operations for the tape device. | |
44 | * device_name | |
45 | * Pointer to the logical device name (will also be used as kobject name | |
46 | * of the cdev). This can also be called the name of the tape class | |
47 | * device. | |
48 | * mode_name | |
49 | * Points to the name of the tape mode. This creates a link with that | |
50 | * name from the physical device to the logical device (class). | |
51 | */ | |
52 | struct tape_class_device *register_tape_dev( | |
53 | struct device * device, | |
54 | dev_t dev, | |
9c2e08c5 | 55 | const struct file_operations *fops, |
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56 | char * device_name, |
57 | char * node_name | |
58 | ); | |
92bf435f | 59 | void unregister_tape_dev(struct device *device, struct tape_class_device *tcd); |
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60 | |
61 | #endif /* __TAPE_CLASS_H__ */ |