Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 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 */ |
| 43 | struct dvb_ca_en50221 { |
| 44 | |
| 45 | /* the module owning this structure */ |
| 46 | struct module* owner; |
| 47 | |
| 48 | /* NOTE: the read_*, write_* and poll_slot_status functions must use locks as |
| 49 | * they may be called from several threads at once */ |
| 50 | |
| 51 | /* functions for accessing attribute memory on the CAM */ |
| 52 | int (*read_attribute_mem)(struct dvb_ca_en50221* ca, int slot, int address); |
| 53 | int (*write_attribute_mem)(struct dvb_ca_en50221* ca, int slot, int address, u8 value); |
| 54 | |
| 55 | /* functions for accessing the control interface on the CAM */ |
| 56 | int (*read_cam_control)(struct dvb_ca_en50221* ca, int slot, u8 address); |
| 57 | int (*write_cam_control)(struct dvb_ca_en50221* ca, int slot, u8 address, u8 value); |
| 58 | |
| 59 | /* Functions for controlling slots */ |
| 60 | int (*slot_reset)(struct dvb_ca_en50221* ca, int slot); |
| 61 | int (*slot_shutdown)(struct dvb_ca_en50221* ca, int slot); |
| 62 | int (*slot_ts_enable)(struct dvb_ca_en50221* ca, int slot); |
| 63 | |
| 64 | /* |
| 65 | * Poll slot status. |
| 66 | * Only necessary if DVB_CA_FLAG_EN50221_IRQ_CAMCHANGE is not set |
| 67 | */ |
| 68 | int (*poll_slot_status)(struct dvb_ca_en50221* ca, int slot, int open); |
| 69 | |
| 70 | /* private data, used by caller */ |
| 71 | void* data; |
| 72 | |
| 73 | /* Opaque data used by the dvb_ca core. Do not modify! */ |
| 74 | void* private; |
| 75 | }; |
| 76 | |
| 77 | |
| 78 | |
| 79 | |
| 80 | /* ******************************************************************************** */ |
| 81 | /* Functions for reporting IRQ events */ |
| 82 | |
| 83 | /** |
| 84 | * A CAMCHANGE IRQ has occurred. |
| 85 | * |
| 86 | * @param ca CA instance. |
| 87 | * @param slot Slot concerned. |
| 88 | * @param change_type One of the DVB_CA_CAMCHANGE_* values |
| 89 | */ |
| 90 | void dvb_ca_en50221_camchange_irq(struct dvb_ca_en50221* pubca, int slot, int change_type); |
| 91 | |
| 92 | /** |
| 93 | * A CAMREADY IRQ has occurred. |
| 94 | * |
| 95 | * @param ca CA instance. |
| 96 | * @param slot Slot concerned. |
| 97 | */ |
| 98 | void dvb_ca_en50221_camready_irq(struct dvb_ca_en50221* pubca, int slot); |
| 99 | |
| 100 | /** |
| 101 | * An FR or a DA IRQ has occurred. |
| 102 | * |
| 103 | * @param ca CA instance. |
| 104 | * @param slot Slot concerned. |
| 105 | */ |
| 106 | void dvb_ca_en50221_frda_irq(struct dvb_ca_en50221* ca, int slot); |
| 107 | |
| 108 | |
| 109 | |
| 110 | /* ******************************************************************************** */ |
| 111 | /* Initialisation/shutdown functions */ |
| 112 | |
| 113 | /** |
| 114 | * Initialise a new DVB CA device. |
| 115 | * |
| 116 | * @param dvb_adapter DVB adapter to attach the new CA device to. |
| 117 | * @param ca The dvb_ca instance. |
| 118 | * @param flags Flags describing the CA device (DVB_CA_EN50221_FLAG_*). |
| 119 | * @param slot_count Number of slots supported. |
| 120 | * |
| 121 | * @return 0 on success, nonzero on failure |
| 122 | */ |
| 123 | extern int dvb_ca_en50221_init(struct dvb_adapter *dvb_adapter, struct dvb_ca_en50221* ca, int flags, int slot_count); |
| 124 | |
| 125 | /** |
| 126 | * Release a DVB CA device. |
| 127 | * |
| 128 | * @param ca The associated dvb_ca instance. |
| 129 | */ |
| 130 | extern void dvb_ca_en50221_release(struct dvb_ca_en50221* ca); |
| 131 | |
| 132 | |
| 133 | |
| 134 | #endif |