[mirror_ubuntu-artful-kernel.git] / drivers / media / dvb-core / dvbdev.h

/*
 * dvbdev.h
 *
 * Copyright (C) 2000 Ralph Metzler & Marcus Metzler
 *                    for convergence integrated media GmbH
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Lesser Public License
 * as published by the Free Software Foundation; either version 2.1
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

#ifndef _DVBDEV_H_
#define _DVBDEV_H_

#include <linux/types.h>
#include <linux/poll.h>
#include <linux/fs.h>
#include <linux/list.h>

#define DVB_MAJOR 212

#if defined(CONFIG_DVB_MAX_ADAPTERS) && CONFIG_DVB_MAX_ADAPTERS > 0
  #define DVB_MAX_ADAPTERS CONFIG_DVB_MAX_ADAPTERS
#else
  #define DVB_MAX_ADAPTERS 8
#endif

#define DVB_UNSET (-1)

#define DVB_DEVICE_VIDEO      0
#define DVB_DEVICE_AUDIO      1
#define DVB_DEVICE_SEC        2
#define DVB_DEVICE_FRONTEND   3
#define DVB_DEVICE_DEMUX      4
#define DVB_DEVICE_DVR        5
#define DVB_DEVICE_CA         6
#define DVB_DEVICE_NET        7
#define DVB_DEVICE_OSD        8

#define DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr) \
	static short adapter_nr[] = \
		{[0 ... (DVB_MAX_ADAPTERS - 1)] = DVB_UNSET }; \
	module_param_array(adapter_nr, short, NULL, 0444); \
	MODULE_PARM_DESC(adapter_nr, "DVB adapter numbers")

struct dvb_frontend;

struct dvb_adapter {
	int num;
	struct list_head list_head;
	struct list_head device_list;
	const char *name;
	u8 proposed_mac [6];
	void* priv;

	struct device *device;

	struct module *module;

	int mfe_shared;			/* indicates mutually exclusive frontends */
	struct dvb_device *mfe_dvbdev;	/* frontend device in use */
	struct mutex mfe_lock;		/* access lock for thread creation */
};


struct dvb_device {
	struct list_head list_head;
	const struct file_operations *fops;
	struct dvb_adapter *adapter;
	int type;
	int minor;
	u32 id;

	/* in theory, 'users' can vanish now,
	   but I don't want to change too much now... */
	int readers;
	int writers;
	int users;

	wait_queue_head_t	  wait_queue;
	/* don't really need those !? -- FIXME: use video_usercopy  */
	int (*kernel_ioctl)(struct file *file, unsigned int cmd, void *arg);

	void *priv;
};


extern int dvb_register_adapter(struct dvb_adapter *adap, const char *name,
				struct module *module, struct device *device,
				short *adapter_nums);
extern int dvb_unregister_adapter (struct dvb_adapter *adap);

extern int dvb_register_device (struct dvb_adapter *adap,
				struct dvb_device **pdvbdev,
				const struct dvb_device *template,
				void *priv,
				int type);

extern void dvb_unregister_device (struct dvb_device *dvbdev);

extern int dvb_generic_open (struct inode *inode, struct file *file);
extern int dvb_generic_release (struct inode *inode, struct file *file);
extern long dvb_generic_ioctl (struct file *file,
			      unsigned int cmd, unsigned long arg);

/* we don't mess with video_usercopy() any more,
we simply define out own dvb_usercopy(), which will hopefully become
generic_usercopy()  someday... */

extern int dvb_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
			    int (*func)(struct file *file, unsigned int cmd, void *arg));

/** generic DVB attach function. */
#ifdef CONFIG_MEDIA_ATTACH
#define dvb_attach(FUNCTION, ARGS...) ({ \
	void *__r = NULL; \
	typeof(&FUNCTION) __a = symbol_request(FUNCTION); \
	if (__a) { \
		__r = (void *) __a(ARGS); \
		if (__r == NULL) \
			symbol_put(FUNCTION); \
	} else { \
		printk(KERN_ERR "DVB: Unable to find symbol "#FUNCTION"()\n"); \
	} \
	__r; \
})

#else
#define dvb_attach(FUNCTION, ARGS...) ({ \
	FUNCTION(ARGS); \
})

#endif

#endif /* #ifndef _DVBDEV_H_ */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* dvbdev.h
	3	*
	4	* Copyright (C) 2000 Ralph Metzler & Marcus Metzler
	5	* for convergence integrated media GmbH
	6	*
	7	* This program is free software; you can redistribute it and/or
	8	* modify it under the terms of the GNU General Lesser Public License
	9	* as published by the Free Software Foundation; either version 2.1
	10	* of the License, or (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU Lesser General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	20	*
	21	*/
	22
	23	#ifndef _DVBDEV_H_
	24	#define _DVBDEV_H_
	25
	26	#include <linux/types.h>
	27	#include <linux/poll.h>
	28	#include <linux/fs.h>
	29	#include <linux/list.h>
1da177e4 LT	30
	31	#define DVB_MAJOR 212
	32
4457ef1d	33	#if defined(CONFIG_DVB_MAX_ADAPTERS) && CONFIG_DVB_MAX_ADAPTERS > 0
d4c02ef9	34	#define DVB_MAX_ADAPTERS CONFIG_DVB_MAX_ADAPTERS
4457ef1d	35	#else
d4c02ef9	36	#define DVB_MAX_ADAPTERS 8
4457ef1d	37	#endif
78e92006 JG	38
	39	#define DVB_UNSET (-1)
	40
1da177e4 LT	41	#define DVB_DEVICE_VIDEO 0
	42	#define DVB_DEVICE_AUDIO 1
	43	#define DVB_DEVICE_SEC 2
	44	#define DVB_DEVICE_FRONTEND 3
	45	#define DVB_DEVICE_DEMUX 4
	46	#define DVB_DEVICE_DVR 5
	47	#define DVB_DEVICE_CA 6
	48	#define DVB_DEVICE_NET 7
	49	#define DVB_DEVICE_OSD 8
	50
78e92006 JG	51	#define DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr) \
	52	static short adapter_nr[] = \
	53	{[0 ... (DVB_MAX_ADAPTERS - 1)] = DVB_UNSET }; \
	54	module_param_array(adapter_nr, short, NULL, 0444); \
	55	MODULE_PARM_DESC(adapter_nr, "DVB adapter numbers")
1da177e4	56
9133aee0 MK	57	struct dvb_frontend;
9133aee0 MK	58
1da177e4 LT	59	struct dvb_adapter {
	60	int num;
	61	struct list_head list_head;
	62	struct list_head device_list;
	63	const char *name;
	64	u8 proposed_mac [6];
	65	void* priv;
	66
d09dbf92 AQ	67	struct device *device;
d09dbf92 AQ	68
1da177e4	69	struct module *module;
59b1842d DB	70
	71	int mfe_shared; /* indicates mutually exclusive frontends */
	72	struct dvb_device mfe_dvbdev; / frontend device in use */
	73	struct mutex mfe_lock; /* access lock for thread creation */
1da177e4 LT	74	};
	75
	76
	77	struct dvb_device {
	78	struct list_head list_head;
784e29d2	79	const struct file_operations *fops;
1da177e4 LT	80	struct dvb_adapter *adapter;
1da177e4 LT	81	int type;
5dd3f307	82	int minor;
1da177e4 LT	83	u32 id;
	84
	85	/* in theory, 'users' can vanish now,
	86	but I don't want to change too much now... */
	87	int readers;
	88	int writers;
	89	int users;
	90
ca5be9cd	91	wait_queue_head_t wait_queue;
afd1a0c9	92	/* don't really need those !? -- FIXME: use video_usercopy */
16ef8def	93	int (kernel_ioctl)(struct file file, unsigned int cmd, void *arg);
1da177e4 LT	94
	95	void *priv;
	96	};
	97
	98
78e92006 JG	99	extern int dvb_register_adapter(struct dvb_adapter adap, const char name,
	100	struct module module, struct device device,
	101	short *adapter_nums);
1da177e4 LT	102	extern int dvb_unregister_adapter (struct dvb_adapter *adap);
	103
	104	extern int dvb_register_device (struct dvb_adapter *adap,
	105	struct dvb_device **pdvbdev,
	106	const struct dvb_device *template,
	107	void *priv,
	108	int type);
	109
	110	extern void dvb_unregister_device (struct dvb_device *dvbdev);
	111
	112	extern int dvb_generic_open (struct inode inode, struct file file);
	113	extern int dvb_generic_release (struct inode inode, struct file file);
16ef8def	114	extern long dvb_generic_ioctl (struct file *file,
1da177e4 LT	115	unsigned int cmd, unsigned long arg);
	116
	117	/* we don't mess with video_usercopy() any more,
	118	we simply define out own dvb_usercopy(), which will hopefully become
	119	generic_usercopy() someday... */
	120
16ef8def AB	121	extern int dvb_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
16ef8def AB	122	int (func)(struct file file, unsigned int cmd, void *arg));
1da177e4	123
d9955060	124	/** generic DVB attach function. */
149ef72d	125	#ifdef CONFIG_MEDIA_ATTACH
d9955060 AQ	126	#define dvb_attach(FUNCTION, ARGS...) ({ \
	127	void *__r = NULL; \
	128	typeof(&FUNCTION) __a = symbol_request(FUNCTION); \
	129	if (__a) { \
	130	__r = (void *) __a(ARGS); \
	131	if (__r == NULL) \
	132	symbol_put(FUNCTION); \
	133	} else { \
	134	printk(KERN_ERR "DVB: Unable to find symbol "#FUNCTION"()\n"); \
	135	} \
	136	__r; \
	137	})
	138
d9955060 AQ	139	#else
	140	#define dvb_attach(FUNCTION, ARGS...) ({ \
	141	FUNCTION(ARGS); \
	142	})
	143
d9955060 AQ	144	#endif
d9955060 AQ	145
1da177e4	146	#endif /* #ifndef _DVBDEV_H_ */