aio_iiro_16.c revision e20ad20d849eb902628553be1fd2dc9ccc40a4bd
1/* 2 3 comedi/drivers/aio_iiro_16.c 4 5 Driver for Acces 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 You should have received a copy of the GNU General Public License 19 along with this program; if not, write to the Free Software 20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 21*/ 22 23/* 24 25Driver: aio_iiro_16 26Description: Acces I/O Products PC-104 IIRO16 Relay And Isolated Input Board 27Author: Zachary Ware <zach.ware@cctechnol.com> 28Devices: 29 [Acces I/O] PC-104 AIO12-8 30Status: experimental 31 32Configuration Options: 33 [0] - I/O port base address 34 35*/ 36 37#include "../comedidev.h" 38#include <linux/ioport.h> 39 40#define AIO_IIRO_16_SIZE 0x08 41#define AIO_IIRO_16_RELAY_0_7 0x00 42#define AIO_IIRO_16_INPUT_0_7 0x01 43#define AIO_IIRO_16_IRQ 0x02 44#define AIO_IIRO_16_RELAY_8_15 0x04 45#define AIO_IIRO_16_INPUT_8_15 0x05 46 47struct aio_iiro_16_board { 48 const char *name; 49 int do_; 50 int di; 51}; 52 53static const struct aio_iiro_16_board aio_iiro_16_boards[] = { 54 { 55 .name = "aio_iiro_16", 56 .di = 16, 57 .do_ = 16}, 58}; 59 60#define thisboard ((const struct aio_iiro_16_board *) dev->board_ptr) 61 62struct aio_iiro_16_private { 63 int data; 64 struct pci_dev *pci_dev; 65 unsigned int ao_readback[2]; 66}; 67 68#define devpriv ((struct aio_iiro_16_private *) dev->private) 69 70static int aio_iiro_16_attach(struct comedi_device *dev, 71 struct comedi_devconfig *it); 72 73static int aio_iiro_16_detach(struct comedi_device *dev); 74 75static struct comedi_driver driver_aio_iiro_16 = { 76 .driver_name = "aio_iiro_16", 77 .module = THIS_MODULE, 78 .attach = aio_iiro_16_attach, 79 .detach = aio_iiro_16_detach, 80 .board_name = &aio_iiro_16_boards[0].name, 81 .offset = sizeof(struct aio_iiro_16_board), 82 .num_names = ARRAY_SIZE(aio_iiro_16_boards), 83}; 84 85static int aio_iiro_16_dio_insn_bits_read(struct comedi_device *dev, 86 struct comedi_subdevice *s, 87 struct comedi_insn *insn, 88 unsigned int *data); 89 90static int aio_iiro_16_dio_insn_bits_write(struct comedi_device *dev, 91 struct comedi_subdevice *s, 92 struct comedi_insn *insn, 93 unsigned int *data); 94 95static int aio_iiro_16_attach(struct comedi_device *dev, 96 struct comedi_devconfig *it) 97{ 98 int iobase; 99 struct comedi_subdevice *s; 100 101 printk(KERN_INFO "comedi%d: aio_iiro_16: ", dev->minor); 102 103 dev->board_name = thisboard->name; 104 105 iobase = it->options[0]; 106 107 if (!request_region(iobase, AIO_IIRO_16_SIZE, dev->board_name)) { 108 printk("I/O port conflict"); 109 return -EIO; 110 } 111 112 dev->iobase = iobase; 113 114 if (alloc_private(dev, sizeof(struct aio_iiro_16_private)) < 0) 115 return -ENOMEM; 116 117 if (alloc_subdevices(dev, 2) < 0) 118 return -ENOMEM; 119 120 s = dev->subdevices + 0; 121 s->type = COMEDI_SUBD_DIO; 122 s->subdev_flags = SDF_WRITABLE; 123 s->n_chan = 16; 124 s->maxdata = 1; 125 s->range_table = &range_digital; 126 s->insn_bits = aio_iiro_16_dio_insn_bits_write; 127 128 s = dev->subdevices + 1; 129 s->type = COMEDI_SUBD_DIO; 130 s->subdev_flags = SDF_READABLE; 131 s->n_chan = 16; 132 s->maxdata = 1; 133 s->range_table = &range_digital; 134 s->insn_bits = aio_iiro_16_dio_insn_bits_read; 135 136 printk("attached\n"); 137 138 return 1; 139} 140 141static int aio_iiro_16_detach(struct comedi_device *dev) 142{ 143 printk(KERN_INFO "comedi%d: aio_iiro_16: remove\n", dev->minor); 144 145 if (dev->iobase) 146 release_region(dev->iobase, AIO_IIRO_16_SIZE); 147 148 return 0; 149} 150 151static int aio_iiro_16_dio_insn_bits_write(struct comedi_device *dev, 152 struct comedi_subdevice *s, 153 struct comedi_insn *insn, 154 unsigned int *data) 155{ 156 if (insn->n != 2) 157 return -EINVAL; 158 159 if (data[0]) { 160 s->state &= ~data[0]; 161 s->state |= data[0] & data[1]; 162 outb(s->state & 0xff, dev->iobase + AIO_IIRO_16_RELAY_0_7); 163 outb((s->state >> 8) & 0xff, 164 dev->iobase + AIO_IIRO_16_RELAY_8_15); 165 } 166 167 data[1] = s->state; 168 169 return 2; 170} 171 172static int aio_iiro_16_dio_insn_bits_read(struct comedi_device *dev, 173 struct comedi_subdevice *s, 174 struct comedi_insn *insn, 175 unsigned int *data) 176{ 177 if (insn->n != 2) 178 return -EINVAL; 179 180 data[1] = 0; 181 data[1] |= inb(dev->iobase + AIO_IIRO_16_INPUT_0_7); 182 data[1] |= inb(dev->iobase + AIO_IIRO_16_INPUT_8_15) << 8; 183 184 return 2; 185} 186 187COMEDI_INITCLEANUP(driver_aio_iiro_16); 188