4 * @brief ME-8200 digital input subdevice class.
5 * @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
6 * @author Guenter Gebhardt
10 * Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
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.
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.
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.
30 #include "mesubdevice.h"
35 * @brief The template subdevice class.
37 typedef struct me8200_di_subdevice {
39 me_subdevice_t base; /**< The subdevice base class. */
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;
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 */
56 int count; /**< Counts the number of interrupts occured. */
57 uint8_t compare_value;
58 uint8_t filtering_flag;
60 wait_queue_head_t wait_queue; /**< To wait on interrupts. */
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;
71 unsigned long firmware_version_reg; /**< The interrupt reseting register. */
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;
78 * @brief The constructor to generate a ME-8200 digital input subdevice instance.
80 * @param reg_base The register base address of the device as returned by the PCI BIOS.
82 * @return Pointer to new instance on success.\n
85 me8200_di_subdevice_t *me8200_di_constructor(uint32_t me8200_reg_base,
88 spinlock_t * irq_ctrl_lock,
89 spinlock_t * irq_mode_lock);