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3d6c2bc08a
just like the V4L2 core, move the DVB core to drivers/media, as the intention is to get rid of both "video" and "dvb" directories. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
137 lines
4.0 KiB
C
137 lines
4.0 KiB
C
/*
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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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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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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 "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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/* Structure describing a CA interface */
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struct dvb_ca_en50221 {
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/* the module owning this structure */
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struct module* owner;
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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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/* functions for accessing attribute memory on the CAM */
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int (*read_attribute_mem)(struct dvb_ca_en50221* ca, int slot, int address);
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int (*write_attribute_mem)(struct dvb_ca_en50221* ca, int slot, int address, u8 value);
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/* functions for accessing the control interface on the CAM */
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int (*read_cam_control)(struct dvb_ca_en50221* ca, int slot, u8 address);
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int (*write_cam_control)(struct dvb_ca_en50221* ca, int slot, u8 address, u8 value);
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/* Functions for controlling slots */
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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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/*
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* Poll slot status.
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* Only necessary if DVB_CA_FLAG_EN50221_IRQ_CAMCHANGE is not set
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*/
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int (*poll_slot_status)(struct dvb_ca_en50221* ca, int slot, int open);
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/* private data, used by caller */
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void* data;
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/* Opaque data used by the dvb_ca core. Do not modify! */
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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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* A CAMCHANGE IRQ has occurred.
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*
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* @param ca CA instance.
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* @param slot Slot concerned.
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* @param 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, int change_type);
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/**
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* A CAMREADY IRQ has occurred.
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*
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* @param ca CA instance.
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* @param 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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* An FR or a DA IRQ has occurred.
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*
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* @param ca CA instance.
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* @param 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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* Initialise a new DVB CA device.
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*
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* @param dvb_adapter DVB adapter to attach the new CA device to.
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* @param ca The dvb_ca instance.
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* @param flags Flags describing the CA device (DVB_CA_EN50221_FLAG_*).
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* @param 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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extern int dvb_ca_en50221_init(struct dvb_adapter *dvb_adapter, struct dvb_ca_en50221* ca, int flags, int slot_count);
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/**
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* Release a DVB CA device.
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*
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* @param ca The associated dvb_ca instance.
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*/
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extern void dvb_ca_en50221_release(struct dvb_ca_en50221* ca);
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#endif
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