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