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 | |
17 | #ifndef _DVB_CA_EN50221_H_ |
18 | #define _DVB_CA_EN50221_H_ |
19 | |
20 | #include <linux/list.h> |
21 | #include <linux/dvb/ca.h> |
22 | |
23 | #include <media/dvbdev.h> |
24 | |
25 | #define DVB_CA_EN50221_POLL_CAM_PRESENT 1 |
26 | #define DVB_CA_EN50221_POLL_CAM_CHANGED 2 |
27 | #define DVB_CA_EN50221_POLL_CAM_READY 4 |
28 | |
29 | #define DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE 1 |
30 | #define DVB_CA_EN50221_FLAG_IRQ_FR 2 |
31 | #define DVB_CA_EN50221_FLAG_IRQ_DA 4 |
32 | |
33 | #define DVB_CA_EN50221_CAMCHANGE_REMOVED 0 |
34 | #define DVB_CA_EN50221_CAMCHANGE_INSERTED 1 |
35 | |
36 | /** |
37 | * struct dvb_ca_en50221- Structure describing a CA interface |
38 | * |
39 | * @owner: the module owning this structure |
40 | * @read_attribute_mem: function for reading attribute memory on the CAM |
41 | * @write_attribute_mem: function for writing attribute memory on the CAM |
42 | * @read_cam_control: function for reading the control interface on the CAM |
43 | * @write_cam_control: function for reading the control interface on the CAM |
44 | * @read_data: function for reading data (block mode) |
45 | * @write_data: function for writing data (block mode) |
46 | * @slot_reset: function to reset the CAM slot |
47 | * @slot_shutdown: function to shutdown a CAM slot |
48 | * @slot_ts_enable: function to enable the Transport Stream on a CAM slot |
49 | * @poll_slot_status: function to poll slot status. Only necessary if |
50 | * DVB_CA_FLAG_EN50221_IRQ_CAMCHANGE is not set. |
51 | * @data: private data, used by caller. |
52 | * @private: Opaque data used by the dvb_ca core. Do not modify! |
53 | * |
54 | * NOTE: the read_*, write_* and poll_slot_status functions will be |
55 | * called for different slots concurrently and need to use locks where |
56 | * and if appropriate. There will be no concurrent access to one slot. |
57 | */ |
58 | struct dvb_ca_en50221 { |
59 | struct module *owner; |
60 | |
61 | int (*read_attribute_mem)(struct dvb_ca_en50221 *ca, |
62 | int slot, int address); |
63 | int (*write_attribute_mem)(struct dvb_ca_en50221 *ca, |
64 | int slot, int address, u8 value); |
65 | |
66 | int (*read_cam_control)(struct dvb_ca_en50221 *ca, |
67 | int slot, u8 address); |
68 | int (*write_cam_control)(struct dvb_ca_en50221 *ca, |
69 | int slot, u8 address, u8 value); |
70 | |
71 | int (*read_data)(struct dvb_ca_en50221 *ca, |
72 | int slot, u8 *ebuf, int ecount); |
73 | int (*write_data)(struct dvb_ca_en50221 *ca, |
74 | int slot, u8 *ebuf, int ecount); |
75 | |
76 | int (*slot_reset)(struct dvb_ca_en50221 *ca, int slot); |
77 | int (*slot_shutdown)(struct dvb_ca_en50221 *ca, int slot); |
78 | int (*slot_ts_enable)(struct dvb_ca_en50221 *ca, int slot); |
79 | |
80 | int (*poll_slot_status)(struct dvb_ca_en50221 *ca, int slot, int open); |
81 | |
82 | void *data; |
83 | |
84 | void *private; |
85 | }; |
86 | |
87 | /* |
88 | * Functions for reporting IRQ events |
89 | */ |
90 | |
91 | /** |
92 | * dvb_ca_en50221_camchange_irq - A CAMCHANGE IRQ has occurred. |
93 | * |
94 | * @pubca: CA instance. |
95 | * @slot: Slot concerned. |
96 | * @change_type: One of the DVB_CA_CAMCHANGE_* values |
97 | */ |
98 | void dvb_ca_en50221_camchange_irq(struct dvb_ca_en50221 *pubca, int slot, |
99 | int change_type); |
100 | |
101 | /** |
102 | * dvb_ca_en50221_camready_irq - A CAMREADY IRQ has occurred. |
103 | * |
104 | * @pubca: CA instance. |
105 | * @slot: Slot concerned. |
106 | */ |
107 | void dvb_ca_en50221_camready_irq(struct dvb_ca_en50221 *pubca, int slot); |
108 | |
109 | /** |
110 | * dvb_ca_en50221_frda_irq - An FR or a DA IRQ has occurred. |
111 | * |
112 | * @ca: CA instance. |
113 | * @slot: Slot concerned. |
114 | */ |
115 | void dvb_ca_en50221_frda_irq(struct dvb_ca_en50221 *ca, int slot); |
116 | |
117 | /* |
118 | * Initialisation/shutdown functions |
119 | */ |
120 | |
121 | /** |
122 | * dvb_ca_en50221_init - Initialise a new DVB CA device. |
123 | * |
124 | * @dvb_adapter: DVB adapter to attach the new CA device to. |
125 | * @ca: The dvb_ca instance. |
126 | * @flags: Flags describing the CA device (DVB_CA_EN50221_FLAG_*). |
127 | * @slot_count: Number of slots supported. |
128 | * |
129 | * @return 0 on success, nonzero on failure |
130 | */ |
131 | int dvb_ca_en50221_init(struct dvb_adapter *dvb_adapter, |
132 | struct dvb_ca_en50221 *ca, int flags, |
133 | int slot_count); |
134 | |
135 | /** |
136 | * dvb_ca_en50221_release - Release a DVB CA device. |
137 | * |
138 | * @ca: The associated dvb_ca instance. |
139 | */ |
140 | void dvb_ca_en50221_release(struct dvb_ca_en50221 *ca); |
141 | |
142 | #endif |
143 | |