name : dvb_ca_en50221.h /* * dvb_ca.h: generic DVB functions for EN50221 CA interfaces * * Copyright (C) 2004 Andrew de Quincey * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public License * as published by the Free Software Foundation; either version 2.1 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #ifndef _DVB_CA_EN50221_H_ #define _DVB_CA_EN50221_H_ #include <linux/list.h> #include <linux/dvb/ca.h> #include <media/dvbdev.h> #define DVB_CA_EN50221_POLL_CAM_PRESENT 1 #define DVB_CA_EN50221_POLL_CAM_CHANGED 2 #define DVB_CA_EN50221_POLL_CAM_READY 4 #define DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE 1 #define DVB_CA_EN50221_FLAG_IRQ_FR 2 #define DVB_CA_EN50221_FLAG_IRQ_DA 4 #define DVB_CA_EN50221_CAMCHANGE_REMOVED 0 #define DVB_CA_EN50221_CAMCHANGE_INSERTED 1 /** * struct dvb_ca_en50221- Structure describing a CA interface * * @owner: the module owning this structure * @read_attribute_mem: function for reading attribute memory on the CAM * @write_attribute_mem: function for writing attribute memory on the CAM * @read_cam_control: function for reading the control interface on the CAM * @write_cam_control: function for reading the control interface on the CAM * @read_data: function for reading data (block mode) * @write_data: function for writing data (block mode) * @slot_reset: function to reset the CAM slot * @slot_shutdown: function to shutdown a CAM slot * @slot_ts_enable: function to enable the Transport Stream on a CAM slot * @poll_slot_status: function to poll slot status. Only necessary if * DVB_CA_FLAG_EN50221_IRQ_CAMCHANGE is not set. * @data: private data, used by caller. * @private: Opaque data used by the dvb_ca core. Do not modify! * * NOTE: the read_*, write_* and poll_slot_status functions will be * called for different slots concurrently and need to use locks where * and if appropriate. There will be no concurrent access to one slot. */ struct dvb_ca_en50221 { struct module *owner; int (*read_attribute_mem)(struct dvb_ca_en50221 *ca, int slot, int address); int (*write_attribute_mem)(struct dvb_ca_en50221 *ca, int slot, int address, u8 value); int (*read_cam_control)(struct dvb_ca_en50221 *ca, int slot, u8 address); int (*write_cam_control)(struct dvb_ca_en50221 *ca, int slot, u8 address, u8 value); int (*read_data)(struct dvb_ca_en50221 *ca, int slot, u8 *ebuf, int ecount); int (*write_data)(struct dvb_ca_en50221 *ca, int slot, u8 *ebuf, int ecount); int (*slot_reset)(struct dvb_ca_en50221 *ca, int slot); int (*slot_shutdown)(struct dvb_ca_en50221 *ca, int slot); int (*slot_ts_enable)(struct dvb_ca_en50221 *ca, int slot); int (*poll_slot_status)(struct dvb_ca_en50221 *ca, int slot, int open); void *data; void *private; }; /* * Functions for reporting IRQ events */ /** * dvb_ca_en50221_camchange_irq - A CAMCHANGE IRQ has occurred. * * @pubca: CA instance. * @slot: Slot concerned. * @change_type: One of the DVB_CA_CAMCHANGE_* values */ void dvb_ca_en50221_camchange_irq(struct dvb_ca_en50221 *pubca, int slot, int change_type); /** * dvb_ca_en50221_camready_irq - A CAMREADY IRQ has occurred. * * @pubca: CA instance. * @slot: Slot concerned. */ void dvb_ca_en50221_camready_irq(struct dvb_ca_en50221 *pubca, int slot); /** * dvb_ca_en50221_frda_irq - An FR or a DA IRQ has occurred. * * @ca: CA instance. * @slot: Slot concerned. */ void dvb_ca_en50221_frda_irq(struct dvb_ca_en50221 *ca, int slot); /* * Initialisation/shutdown functions */ /** * dvb_ca_en50221_init - Initialise a new DVB CA device. * * @dvb_adapter: DVB adapter to attach the new CA device to. * @ca: The dvb_ca instance. * @flags: Flags describing the CA device (DVB_CA_EN50221_FLAG_*). * @slot_count: Number of slots supported. * * @return 0 on success, nonzero on failure */ int dvb_ca_en50221_init(struct dvb_adapter *dvb_adapter, struct dvb_ca_en50221 *ca, int flags, int slot_count); /** * dvb_ca_en50221_release - Release a DVB CA device. * * @ca: The associated dvb_ca instance. */ void dvb_ca_en50221_release(struct dvb_ca_en50221 *ca); #endif