1/* 2 3 comedi/drivers/aio_iiro_16.c 4 5 Driver for Access I/O Products PC-104 AIO-IIRO-16 Digital I/O board 6 Copyright (C) 2006 C&C Technologies, Inc. 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17*/ 18 19/* 20 21Driver: aio_iiro_16 22Description: Access I/O Products PC-104 IIRO16 Relay And Isolated Input Board 23Author: Zachary Ware <zach.ware@cctechnol.com> 24Devices: 25 [Access I/O] PC-104 AIO12-8 26Status: experimental 27 28Configuration Options: 29 [0] - I/O port base address 30 31*/ 32 33#include <linux/module.h> 34#include "../comedidev.h" 35 36#define AIO_IIRO_16_RELAY_0_7 0x00 37#define AIO_IIRO_16_INPUT_0_7 0x01 38#define AIO_IIRO_16_IRQ 0x02 39#define AIO_IIRO_16_RELAY_8_15 0x04 40#define AIO_IIRO_16_INPUT_8_15 0x05 41 42static int aio_iiro_16_dio_insn_bits_write(struct comedi_device *dev, 43 struct comedi_subdevice *s, 44 struct comedi_insn *insn, 45 unsigned int *data) 46{ 47 if (comedi_dio_update_state(s, data)) { 48 outb(s->state & 0xff, dev->iobase + AIO_IIRO_16_RELAY_0_7); 49 outb((s->state >> 8) & 0xff, 50 dev->iobase + AIO_IIRO_16_RELAY_8_15); 51 } 52 53 data[1] = s->state; 54 55 return insn->n; 56} 57 58static int aio_iiro_16_dio_insn_bits_read(struct comedi_device *dev, 59 struct comedi_subdevice *s, 60 struct comedi_insn *insn, 61 unsigned int *data) 62{ 63 data[1] = 0; 64 data[1] |= inb(dev->iobase + AIO_IIRO_16_INPUT_0_7); 65 data[1] |= inb(dev->iobase + AIO_IIRO_16_INPUT_8_15) << 8; 66 67 return insn->n; 68} 69 70static int aio_iiro_16_attach(struct comedi_device *dev, 71 struct comedi_devconfig *it) 72{ 73 struct comedi_subdevice *s; 74 int ret; 75 76 ret = comedi_request_region(dev, it->options[0], 0x8); 77 if (ret) 78 return ret; 79 80 ret = comedi_alloc_subdevices(dev, 2); 81 if (ret) 82 return ret; 83 84 s = &dev->subdevices[0]; 85 s->type = COMEDI_SUBD_DIO; 86 s->subdev_flags = SDF_WRITABLE; 87 s->n_chan = 16; 88 s->maxdata = 1; 89 s->range_table = &range_digital; 90 s->insn_bits = aio_iiro_16_dio_insn_bits_write; 91 92 s = &dev->subdevices[1]; 93 s->type = COMEDI_SUBD_DIO; 94 s->subdev_flags = SDF_READABLE; 95 s->n_chan = 16; 96 s->maxdata = 1; 97 s->range_table = &range_digital; 98 s->insn_bits = aio_iiro_16_dio_insn_bits_read; 99 100 return 0; 101} 102 103static struct comedi_driver aio_iiro_16_driver = { 104 .driver_name = "aio_iiro_16", 105 .module = THIS_MODULE, 106 .attach = aio_iiro_16_attach, 107 .detach = comedi_legacy_detach, 108}; 109module_comedi_driver(aio_iiro_16_driver); 110 111MODULE_AUTHOR("Comedi http://www.comedi.org"); 112MODULE_DESCRIPTION("Comedi low-level driver"); 113MODULE_LICENSE("GPL"); 114