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-rw-r--r--drivers/media/dvb/dvb-core/dvbdev.h172
1 files changed, 172 insertions, 0 deletions
diff --git a/drivers/media/dvb/dvb-core/dvbdev.h b/drivers/media/dvb/dvb-core/dvbdev.h
new file mode 100644
index 00000000000..fcc6ae98745
--- /dev/null
+++ b/drivers/media/dvb/dvb-core/dvbdev.h
@@ -0,0 +1,172 @@
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
31#define DVB_MAJOR 212
32
33#if defined(CONFIG_DVB_MAX_ADAPTERS) && CONFIG_DVB_MAX_ADAPTERS > 0
34 #define DVB_MAX_ADAPTERS CONFIG_DVB_MAX_ADAPTERS
35#else
36 #define DVB_MAX_ADAPTERS 8
37#endif
38
39#define DVB_UNSET (-1)
40
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
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")
56
57struct dvb_frontend;
58
59struct 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
67 struct device *device;
68
69 struct module *module;
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 */
74
75 /* Allow the adapter/bridge driver to perform an action before and/or
76 * after the core handles an ioctl:
77 *
78 * DVB_FE_IOCTL_PRE indicates that the ioctl has not yet been handled.
79 * DVB_FE_IOCTL_POST indicates that the ioctl has been handled.
80 *
81 * When DVB_FE_IOCTL_PRE is passed to the callback as the stage arg:
82 *
83 * return 0 to allow dvb-core to handle the ioctl.
84 * return a positive int to prevent dvb-core from handling the ioctl,
85 * and exit without error.
86 * return a negative int to prevent dvb-core from handling the ioctl,
87 * and return that value as an error.
88 *
89 * When DVB_FE_IOCTL_POST is passed to the callback as the stage arg:
90 *
91 * return 0 to allow the dvb_frontend ioctl handler to exit normally.
92 * return a negative int to cause the dvb_frontend ioctl handler to
93 * return that value as an error.
94 */
95#define DVB_FE_IOCTL_PRE 0
96#define DVB_FE_IOCTL_POST 1
97 int (*fe_ioctl_override)(struct dvb_frontend *fe,
98 unsigned int cmd, void *parg,
99 unsigned int stage);
100};
101
102
103struct dvb_device {
104 struct list_head list_head;
105 const struct file_operations *fops;
106 struct dvb_adapter *adapter;
107 int type;
108 int minor;
109 u32 id;
110
111 /* in theory, 'users' can vanish now,
112 but I don't want to change too much now... */
113 int readers;
114 int writers;
115 int users;
116
117 wait_queue_head_t wait_queue;
118 /* don't really need those !? -- FIXME: use video_usercopy */
119 int (*kernel_ioctl)(struct file *file, unsigned int cmd, void *arg);
120
121 void *priv;
122};
123
124
125extern int dvb_register_adapter(struct dvb_adapter *adap, const char *name,
126 struct module *module, struct device *device,
127 short *adapter_nums);
128extern int dvb_unregister_adapter (struct dvb_adapter *adap);
129
130extern int dvb_register_device (struct dvb_adapter *adap,
131 struct dvb_device **pdvbdev,
132 const struct dvb_device *template,
133 void *priv,
134 int type);
135
136extern void dvb_unregister_device (struct dvb_device *dvbdev);
137
138extern int dvb_generic_open (struct inode *inode, struct file *file);
139extern int dvb_generic_release (struct inode *inode, struct file *file);
140extern long dvb_generic_ioctl (struct file *file,
141 unsigned int cmd, unsigned long arg);
142
143/* we don't mess with video_usercopy() any more,
144we simply define out own dvb_usercopy(), which will hopefully become
145generic_usercopy() someday... */
146
147extern int dvb_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
148 int (*func)(struct file *file, unsigned int cmd, void *arg));
149
150/** generic DVB attach function. */
151#ifdef CONFIG_MEDIA_ATTACH
152#define dvb_attach(FUNCTION, ARGS...) ({ \
153 void *__r = NULL; \
154 typeof(&FUNCTION) __a = symbol_request(FUNCTION); \
155 if (__a) { \
156 __r = (void *) __a(ARGS); \
157 if (__r == NULL) \
158 symbol_put(FUNCTION); \
159 } else { \
160 printk(KERN_ERR "DVB: Unable to find symbol "#FUNCTION"()\n"); \
161 } \
162 __r; \
163})
164
165#else
166#define dvb_attach(FUNCTION, ARGS...) ({ \
167 FUNCTION(ARGS); \
168})
169
170#endif
171
172#endif /* #ifndef _DVBDEV_H_ */
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