1 /** 2 * @file me8200_di.h 3 * 4 * @brief ME-8200 digital input subdevice class. 5 * @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de) 6 * @author Guenter Gebhardt 7 */ 8 9 /* 10 * Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de) 11 * 12 * This file is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License as published by 14 * the Free Software Foundation; either version 2 of the License, or 15 * (at your option) any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 25 */ 26 27 #ifndef _ME8200_DI_H_ 28 #define _ME8200_DI_H_ 29 30 #include "mesubdevice.h" 31 32 #ifdef __KERNEL__ 33 34 /** 35 * @brief The template subdevice class. 36 */ 37 typedef struct me8200_di_subdevice { 38 /* Inheritance */ 39 me_subdevice_t base; /**< The subdevice base class. */ 40 41 /* Attributes */ 42 spinlock_t subdevice_lock; /**< Spin lock to protect the subdevice from concurrent access. */ 43 spinlock_t *ctrl_reg_lock; 44 spinlock_t *irq_ctrl_lock; 45 spinlock_t *irq_mode_lock; 46 47 unsigned int di_idx; 48 unsigned int version; 49 50 int irq; /**< The number of the interrupt request. */ 51 volatile int rised; /**< Flag to indicate if an interrupt occured. */ 52 uint status_flag; /**< Default interupt status flag */ 53 uint status_value; /**< Interupt status */ 54 uint status_value_edges; /**< Extended interupt status */ 55 uint line_value; 56 int count; /**< Counts the number of interrupts occured. */ 57 uint8_t compare_value; 58 uint8_t filtering_flag; 59 60 wait_queue_head_t wait_queue; /**< To wait on interrupts. */ 61 62 unsigned long port_reg; /**< The digital input port. */ 63 unsigned long compare_reg; /**< The register to hold the value to compare with. */ 64 unsigned long mask_reg; /**< The register to hold the mask. */ 65 unsigned long irq_mode_reg; /**< The interrupt mode register. */ 66 unsigned long irq_ctrl_reg; /**< The interrupt control register. */ 67 unsigned long irq_status_reg; /**< The interrupt status register. Also interrupt reseting register (firmware version 7 and later).*/ 68 #ifdef MEDEBUG_DEBUG_REG 69 unsigned long reg_base; 70 #endif 71 unsigned long firmware_version_reg; /**< The interrupt reseting register. */ 72 73 unsigned long irq_status_low_reg; /**< The interrupt extended status register (low part). */ 74 unsigned long irq_status_high_reg; /**< The interrupt extended status register (high part). */ 75 } me8200_di_subdevice_t; 76 77 /** 78 * @brief The constructor to generate a ME-8200 digital input subdevice instance. 79 * 80 * @param reg_base The register base address of the device as returned by the PCI BIOS. 81 * 82 * @return Pointer to new instance on success.\n 83 * NULL on error. 84 */ 85 me8200_di_subdevice_t *me8200_di_constructor(uint32_t me8200_reg_base, 86 unsigned int di_idx, 87 int irq, 88 spinlock_t * irq_ctrl_lock, 89 spinlock_t * irq_mode_lock); 90 91 #endif 92 #endif 93