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dvb_ca_en50221.h
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1 /*
2  * dvb_ca.h: generic DVB functions for EN50221 CA interfaces
3  *
4  * Copyright (C) 2004 Andrew de Quincey
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public License
8  * as published by the Free Software Foundation; either version 2.1
9  * of the License, or (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19  */
20 
21 #ifndef _DVB_CA_EN50221_H_
22 #define _DVB_CA_EN50221_H_
23 
24 #include <linux/list.h>
25 #include <linux/dvb/ca.h>
26 
27 #include "dvbdev.h"
28 
29 #define DVB_CA_EN50221_POLL_CAM_PRESENT 1
30 #define DVB_CA_EN50221_POLL_CAM_CHANGED 2
31 #define DVB_CA_EN50221_POLL_CAM_READY 4
32 
33 #define DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE 1
34 #define DVB_CA_EN50221_FLAG_IRQ_FR 2
35 #define DVB_CA_EN50221_FLAG_IRQ_DA 4
36 
37 #define DVB_CA_EN50221_CAMCHANGE_REMOVED 0
38 #define DVB_CA_EN50221_CAMCHANGE_INSERTED 1
39 
40 
41 
42 /* Structure describing a CA interface */
44 
45  /* the module owning this structure */
46  struct module* owner;
47 
48  /* NOTE: the read_*, write_* and poll_slot_status functions will be
49  * called for different slots concurrently and need to use locks where
50  * and if appropriate. There will be no concurrent access to one slot.
51  */
52 
53  /* functions for accessing attribute memory on the CAM */
56 
57  /* functions for accessing the control interface on the CAM */
60 
61  /* Functions for controlling slots */
62  int (*slot_reset)(struct dvb_ca_en50221* ca, int slot);
65 
66  /*
67  * Poll slot status.
68  * Only necessary if DVB_CA_FLAG_EN50221_IRQ_CAMCHANGE is not set
69  */
70  int (*poll_slot_status)(struct dvb_ca_en50221* ca, int slot, int open);
71 
72  /* private data, used by caller */
73  void* data;
74 
75  /* Opaque data used by the dvb_ca core. Do not modify! */
76  void* private;
77 };
78 
79 
80 
81 
82 /* ******************************************************************************** */
83 /* Functions for reporting IRQ events */
84 
92 void dvb_ca_en50221_camchange_irq(struct dvb_ca_en50221* pubca, int slot, int change_type);
93 
100 void dvb_ca_en50221_camready_irq(struct dvb_ca_en50221* pubca, int slot);
101 
108 void dvb_ca_en50221_frda_irq(struct dvb_ca_en50221* ca, int slot);
109 
110 
111 
112 /* ******************************************************************************** */
113 /* Initialisation/shutdown functions */
114 
125 extern int dvb_ca_en50221_init(struct dvb_adapter *dvb_adapter, struct dvb_ca_en50221* ca, int flags, int slot_count);
126 
132 extern void dvb_ca_en50221_release(struct dvb_ca_en50221* ca);
133 
134 
135 
136 #endif