[deliverable/linux.git] / drivers / s390 / char / tape_class.h

/*
 * (C) Copyright IBM Corp. 2004   All Rights Reserved.
 * tape_class.h
 *
 * Tape class device support
 *
 * Author: Stefan Bader <shbader@de.ibm.com>
 * Based on simple class device code by Greg K-H
 */
#ifndef __TAPE_CLASS_H__
#define __TAPE_CLASS_H__

#include <linux/init.h>
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/major.h>
#include <linux/kobject.h>
#include <linux/kobj_map.h>
#include <linux/cdev.h>

#include <linux/device.h>
#include <linux/kdev_t.h>

#define TAPECLASS_NAME_LEN	32

struct tape_class_device {
	struct cdev		*char_device;
	struct device		*class_device;
	char			device_name[TAPECLASS_NAME_LEN];
	char			mode_name[TAPECLASS_NAME_LEN];
};

/*
 * Register a tape device and return a pointer to the tape class device
 * created by the call.
 *
 * device
 *	The pointer to the struct device of the physical (base) device.
 * dev
 *	The intended major/minor number. The major number may be 0 to
 *	get a dynamic major number.
 * fops
 *	The pointer to the drivers file operations for the tape device.
 * device_name
 *	Pointer to the logical device name (will also be used as kobject name
 *	of the cdev). This can also be called the name of the tape class
 *	device.
 * mode_name
 *	Points to the name of the tape mode. This creates a link with that
 *	name from the physical device to the logical device (class).
 */
struct tape_class_device *register_tape_dev(
	struct device *		device,
	dev_t			dev,
	const struct file_operations *fops,
	char *			device_name,
	char *			node_name
);
void unregister_tape_dev(struct device *device, struct tape_class_device *tcd);

#endif /* __TAPE_CLASS_H__ */
Commit	Line	Data
1da177e4 LT	1	/*
1da177e4 LT	2	* (C) Copyright IBM Corp. 2004 All Rights Reserved.
e018ba1f	3	* tape_class.h
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>
	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;
7f021ce1 CH	28	struct device *class_device;
1da177e4 LT	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,
1da177e4 LT	56	char * device_name,
	57	char * node_name
	58	);
92bf435f	59	void unregister_tape_dev(struct device device, struct tape_class_device tcd);
1da177e4 LT	60
1da177e4 LT	61	#endif /* __TAPE_CLASS_H__ */