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142 lines
4.4 KiB
142 lines
4.4 KiB
/* |
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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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