Logo Search packages:      
Sourcecode: linux version File versions  Download package

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.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#ifndef _DVB_CA_EN50221_H_
#define _DVB_CA_EN50221_H_

#include <linux/list.h>
#include <linux/dvb/ca.h>

#include "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



/* Structure describing a CA interface */
struct dvb_ca_en50221 {

      /* the module owning this structure */
      struct module* owner;

      /* NOTE: the read_*, write_* and poll_slot_status functions must use locks as
       * they may be called from several threads at once */

      /* functions for accessing attribute memory on the CAM */
      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);

      /* functions for accessing the control interface on the CAM */
      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);

      /* Functions for controlling slots */
      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);

      /*
      * Poll slot status.
      * Only necessary if DVB_CA_FLAG_EN50221_IRQ_CAMCHANGE is not set
      */
      int (*poll_slot_status)(struct dvb_ca_en50221* ca, int slot, int open);

      /* private data, used by caller */
      void* data;

      /* Opaque data used by the dvb_ca core. Do not modify! */
      void* private;
};




/* ******************************************************************************** */
/* Functions for reporting IRQ events */

/**
 * A CAMCHANGE IRQ has occurred.
 *
 * @param ca CA instance.
 * @param slot Slot concerned.
 * @param 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);

/**
 * A CAMREADY IRQ has occurred.
 *
 * @param ca CA instance.
 * @param slot Slot concerned.
 */
void dvb_ca_en50221_camready_irq(struct dvb_ca_en50221* pubca, int slot);

/**
 * An FR or a DA IRQ has occurred.
 *
 * @param ca CA instance.
 * @param slot Slot concerned.
 */
void dvb_ca_en50221_frda_irq(struct dvb_ca_en50221* ca, int slot);



/* ******************************************************************************** */
/* Initialisation/shutdown functions */

/**
 * Initialise a new DVB CA device.
 *
 * @param dvb_adapter DVB adapter to attach the new CA device to.
 * @param ca The dvb_ca instance.
 * @param flags Flags describing the CA device (DVB_CA_EN50221_FLAG_*).
 * @param slot_count Number of slots supported.
 *
 * @return 0 on success, nonzero on failure
 */
extern int dvb_ca_en50221_init(struct dvb_adapter *dvb_adapter, struct dvb_ca_en50221* ca, int flags, int slot_count);

/**
 * Release a DVB CA device.
 *
 * @param ca The associated dvb_ca instance.
 */
extern void dvb_ca_en50221_release(struct dvb_ca_en50221* ca);



#endif

Generated by  Doxygen 1.6.0   Back to index