tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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>
30#include <linux/smp_lock.h>
31
32#define DVB_MAJOR 212
33
34#define DVB_DEVICE_VIDEO 0
35#define DVB_DEVICE_AUDIO 1
36#define DVB_DEVICE_SEC 2
37#define DVB_DEVICE_FRONTEND 3
38#define DVB_DEVICE_DEMUX 4
39#define DVB_DEVICE_DVR 5
40#define DVB_DEVICE_CA 6
41#define DVB_DEVICE_NET 7
42#define DVB_DEVICE_OSD 8
43
44
45struct dvb_adapter {
46 int num;
47 struct list_head list_head;
48 struct list_head device_list;
49 const char *name;
50 u8 proposed_mac [6];
51 void* priv;
52
53 struct device *device;
54
55 struct module *module;
56};
57
58
59struct dvb_device {
60 struct list_head list_head;
61 struct file_operations *fops;
62 struct dvb_adapter *adapter;
63 int type;
64 u32 id;
65
66 /* in theory, 'users' can vanish now,
67 but I don't want to change too much now... */
68 int readers;
69 int writers;
70 int users;
71
72 wait_queue_head_t wait_queue;
73 /* don't really need those !? -- FIXME: use video_usercopy */
74 int (*kernel_ioctl)(struct inode *inode, struct file *file,
75 unsigned int cmd, void *arg);
76
77 void *priv;
78};
79
80
81extern int dvb_register_adapter (struct dvb_adapter *adap, const char *name, struct module *module, struct device *device);
82extern int dvb_unregister_adapter (struct dvb_adapter *adap);
83
84extern int dvb_register_device (struct dvb_adapter *adap,
85 struct dvb_device **pdvbdev,
86 const struct dvb_device *template,
87 void *priv,
88 int type);
89
90extern void dvb_unregister_device (struct dvb_device *dvbdev);
91
92extern int dvb_generic_open (struct inode *inode, struct file *file);
93extern int dvb_generic_release (struct inode *inode, struct file *file);
94extern int dvb_generic_ioctl (struct inode *inode, struct file *file,
95 unsigned int cmd, unsigned long arg);
96
97/* we don't mess with video_usercopy() any more,
98we simply define out own dvb_usercopy(), which will hopefully become
99generic_usercopy() someday... */
100
101extern int dvb_usercopy(struct inode *inode, struct file *file,
102 unsigned int cmd, unsigned long arg,
103 int (*func)(struct inode *inode, struct file *file,
104 unsigned int cmd, void *arg));
105
106/** generic DVB attach function. */
107#ifdef CONFIG_DVB_CORE_ATTACH
108#define dvb_attach(FUNCTION, ARGS...) ({ \
109 void *__r = NULL; \
110 typeof(&FUNCTION) __a = symbol_request(FUNCTION); \
111 if (__a) { \
112 __r = (void *) __a(ARGS); \
113 if (__r == NULL) \
114 symbol_put(FUNCTION); \
115 } else { \
116 printk(KERN_ERR "DVB: Unable to find symbol "#FUNCTION"()\n"); \
117 } \
118 __r; \
119})
120
121#else
122#define dvb_attach(FUNCTION, ARGS...) ({ \
123 FUNCTION(ARGS); \
124})
125
126#endif
127
128#endif /* #ifndef _DVBDEV_H_ */