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/**
* @file me8200_di.h
*
* @brief ME-8200 digital input subdevice class.
* @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
* @author Guenter Gebhardt
*/
/*
* Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef _ME8200_DI_H_
#define _ME8200_DI_H_
#include "mesubdevice.h"
#ifdef __KERNEL__
/**
* @brief The template subdevice class.
*/
typedef struct me8200_di_subdevice {
/* Inheritance */
me_subdevice_t base; /**< The subdevice base class. */
/* Attributes */
spinlock_t subdevice_lock; /**< Spin lock to protect the subdevice from concurrent access. */
spinlock_t *ctrl_reg_lock;
spinlock_t *irq_ctrl_lock;
spinlock_t *irq_mode_lock;
unsigned int di_idx;
unsigned int version;
int irq; /**< The number of the interrupt request. */
volatile int rised; /**< Flag to indicate if an interrupt occured. */
uint status_flag; /**< Default interupt status flag */
uint status_value; /**< Interupt status */
uint status_value_edges; /**< Extended interupt status */
uint line_value;
int count; /**< Counts the number of interrupts occured. */
uint8_t compare_value;
uint8_t filtering_flag;
wait_queue_head_t wait_queue; /**< To wait on interrupts. */
unsigned long port_reg; /**< The digital input port. */
unsigned long compare_reg; /**< The register to hold the value to compare with. */
unsigned long mask_reg; /**< The register to hold the mask. */
unsigned long irq_mode_reg; /**< The interrupt mode register. */
unsigned long irq_ctrl_reg; /**< The interrupt control register. */
unsigned long irq_status_reg; /**< The interrupt status register. Also interrupt reseting register (firmware version 7 and later).*/
#ifdef MEDEBUG_DEBUG_REG
unsigned long reg_base;
#endif
unsigned long firmware_version_reg; /**< The interrupt reseting register. */
unsigned long irq_status_low_reg; /**< The interrupt extended status register (low part). */
unsigned long irq_status_high_reg; /**< The interrupt extended status register (high part). */
} me8200_di_subdevice_t;
/**
* @brief The constructor to generate a ME-8200 digital input subdevice instance.
*
* @param reg_base The register base address of the device as returned by the PCI BIOS.
*
* @return Pointer to new instance on success.\n
* NULL on error.
*/
me8200_di_subdevice_t *me8200_di_constructor(uint32_t me8200_reg_base,
unsigned int di_idx,
int irq,
spinlock_t * irq_ctrl_lock,
spinlock_t * irq_mode_lock);
#endif
#endif
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