1/* 2 comedi/drivers/amplc_pc263.c 3 Driver for Amplicon PC263 and PCI263 relay boards. 4 5 Copyright (C) 2002 MEV Ltd. <http://www.mev.co.uk/> 6 7 COMEDI - Linux Control and Measurement Device Interface 8 Copyright (C) 2000 David A. Schleef <ds@schleef.org> 9 10 This program is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 2 of the License, or 13 (at your option) any later version. 14 15 This program is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License for more details. 19*/ 20/* 21Driver: amplc_pc263 22Description: Amplicon PC263 23Author: Ian Abbott <abbotti@mev.co.uk> 24Devices: [Amplicon] PC263 (pc263) 25Updated: Fri, 12 Apr 2013 15:19:36 +0100 26Status: works 27 28Configuration options: 29 [0] - I/O port base address 30 31The board appears as one subdevice, with 16 digital outputs, each 32connected to a reed-relay. Relay contacts are closed when output is 1. 33The state of the outputs can be read. 34*/ 35 36#include <linux/module.h> 37#include "../comedidev.h" 38 39/* PC263 registers */ 40 41/* 42 * Board descriptions for Amplicon PC263. 43 */ 44 45struct pc263_board { 46 const char *name; 47}; 48 49static const struct pc263_board pc263_boards[] = { 50 { 51 .name = "pc263", 52 }, 53}; 54 55static int pc263_do_insn_bits(struct comedi_device *dev, 56 struct comedi_subdevice *s, 57 struct comedi_insn *insn, 58 unsigned int *data) 59{ 60 if (comedi_dio_update_state(s, data)) { 61 outb(s->state & 0xff, dev->iobase); 62 outb((s->state >> 8) & 0xff, dev->iobase + 1); 63 } 64 65 data[1] = s->state; 66 67 return insn->n; 68} 69 70static int pc263_attach(struct comedi_device *dev, struct comedi_devconfig *it) 71{ 72 struct comedi_subdevice *s; 73 int ret; 74 75 ret = comedi_request_region(dev, it->options[0], 0x2); 76 if (ret) 77 return ret; 78 79 ret = comedi_alloc_subdevices(dev, 1); 80 if (ret) 81 return ret; 82 83 s = &dev->subdevices[0]; 84 /* digital output subdevice */ 85 s->type = COMEDI_SUBD_DO; 86 s->subdev_flags = SDF_READABLE | SDF_WRITABLE; 87 s->n_chan = 16; 88 s->maxdata = 1; 89 s->range_table = &range_digital; 90 s->insn_bits = pc263_do_insn_bits; 91 /* read initial relay state */ 92 s->state = inb(dev->iobase) | (inb(dev->iobase + 1) << 8); 93 94 return 0; 95} 96 97static struct comedi_driver amplc_pc263_driver = { 98 .driver_name = "amplc_pc263", 99 .module = THIS_MODULE, 100 .attach = pc263_attach, 101 .detach = comedi_legacy_detach, 102 .board_name = &pc263_boards[0].name, 103 .offset = sizeof(struct pc263_board), 104 .num_names = ARRAY_SIZE(pc263_boards), 105}; 106 107module_comedi_driver(amplc_pc263_driver); 108 109MODULE_AUTHOR("Comedi http://www.comedi.org"); 110MODULE_DESCRIPTION("Comedi driver for Amplicon PC263 relay board"); 111MODULE_LICENSE("GPL"); 112