2 * dvb_ca.h: generic DVB functions for EN50221 CA interfaces
4 * Copyright (C) 2004 Andrew de Quincey
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.
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.
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.
21 #ifndef _DVB_CA_EN50221_H_
22 #define _DVB_CA_EN50221_H_
24 #include <linux/list.h>
25 #include <linux/dvb/ca.h>
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
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
37 #define DVB_CA_EN50221_CAMCHANGE_REMOVED 0
38 #define DVB_CA_EN50221_CAMCHANGE_INSERTED 1
42 /* Structure describing a CA interface */
43 struct dvb_ca_en50221 {
45 /* functions for accessing attribute memory on the CAM */
46 int (*read_attribute_mem)(struct dvb_ca_en50221* ca, int slot, int address);
47 int (*write_attribute_mem)(struct dvb_ca_en50221* ca, int slot, int address, u8 value);
49 /* functions for accessing the control interface on the CAM */
50 int (*read_cam_control)(struct dvb_ca_en50221* ca, int slot, u8 address);
51 int (*write_cam_control)(struct dvb_ca_en50221* ca, int slot, u8 address, u8 value);
53 /* Functions for controlling slots */
54 int (*slot_reset)(struct dvb_ca_en50221* ca, int slot);
55 int (*slot_shutdown)(struct dvb_ca_en50221* ca, int slot);
56 int (*slot_ts_enable)(struct dvb_ca_en50221* ca, int slot);
60 * Only necessary if DVB_CA_FLAG_EN50221_IRQ_CAMCHANGE is not set
62 int (*poll_slot_status)(struct dvb_ca_en50221* ca, int slot);
64 /* private data, used by caller */
67 /* Opaque data used by the dvb_ca core. Do not modify! */
74 /* ******************************************************************************** */
75 /* Functions for reporting IRQ events */
78 * A CAMCHANGE IRQ has occurred.
80 * @param ca CA instance.
81 * @param slot Slot concerned.
82 * @param change_type One of the DVB_CA_CAMCHANGE_* values
84 void dvb_ca_en50221_camchange_irq(struct dvb_ca_en50221* pubca, int slot, int change_type);
87 * A CAMREADY IRQ has occurred.
89 * @param ca CA instance.
90 * @param slot Slot concerned.
92 void dvb_ca_en50221_camready_irq(struct dvb_ca_en50221* pubca, int slot);
95 * An FR or a DA IRQ has occurred.
97 * @param ca CA instance.
98 * @param slot Slot concerned.
100 void dvb_ca_en50221_frda_irq(struct dvb_ca_en50221* ca, int slot);
104 /* ******************************************************************************** */
105 /* Initialisation/shutdown functions */
108 * Initialise a new DVB CA device.
110 * @param dvb_adapter DVB adapter to attach the new CA device to.
111 * @param ca The dvb_ca instance.
112 * @param flags Flags describing the CA device (DVB_CA_EN50221_FLAG_*).
113 * @param slot_count Number of slots supported.
115 * @return 0 on success, nonzero on failure
117 extern int dvb_ca_en50221_init(struct dvb_adapter *dvb_adapter, struct dvb_ca_en50221* ca, int flags, int slot_count);
120 * Release a DVB CA device.
122 * @param ca The associated dvb_ca instance.
124 extern void dvb_ca_en50221_release(struct dvb_ca_en50221* ca);