// SPDX-License-Identifier: GPL-2.0+
|
/*
|
* Driver for Amplicon PC263 relay board.
|
*
|
* Copyright (C) 2002 MEV Ltd. <https://www.mev.co.uk/>
|
*
|
* COMEDI - Linux Control and Measurement Device Interface
|
* Copyright (C) 2000 David A. Schleef <ds@schleef.org>
|
*/
|
|
/*
|
* Driver: amplc_pc263
|
* Description: Amplicon PC263
|
* Author: Ian Abbott <abbotti@mev.co.uk>
|
* Devices: [Amplicon] PC263 (pc263)
|
* Updated: Fri, 12 Apr 2013 15:19:36 +0100
|
* Status: works
|
*
|
* Configuration options:
|
* [0] - I/O port base address
|
*
|
* The board appears as one subdevice, with 16 digital outputs, each
|
* connected to a reed-relay. Relay contacts are closed when output is 1.
|
* The state of the outputs can be read.
|
*/
|
|
#include <linux/module.h>
|
#include "../comedidev.h"
|
|
/* PC263 registers */
|
#define PC263_DO_0_7_REG 0x00
|
#define PC263_DO_8_15_REG 0x01
|
|
struct pc263_board {
|
const char *name;
|
};
|
|
static const struct pc263_board pc263_boards[] = {
|
{
|
.name = "pc263",
|
},
|
};
|
|
static int pc263_do_insn_bits(struct comedi_device *dev,
|
struct comedi_subdevice *s,
|
struct comedi_insn *insn,
|
unsigned int *data)
|
{
|
if (comedi_dio_update_state(s, data)) {
|
outb(s->state & 0xff, dev->iobase + PC263_DO_0_7_REG);
|
outb((s->state >> 8) & 0xff, dev->iobase + PC263_DO_8_15_REG);
|
}
|
|
data[1] = s->state;
|
|
return insn->n;
|
}
|
|
static int pc263_attach(struct comedi_device *dev, struct comedi_devconfig *it)
|
{
|
struct comedi_subdevice *s;
|
int ret;
|
|
ret = comedi_request_region(dev, it->options[0], 0x2);
|
if (ret)
|
return ret;
|
|
ret = comedi_alloc_subdevices(dev, 1);
|
if (ret)
|
return ret;
|
|
/* Digital Output subdevice */
|
s = &dev->subdevices[0];
|
s->type = COMEDI_SUBD_DO;
|
s->subdev_flags = SDF_WRITABLE;
|
s->n_chan = 16;
|
s->maxdata = 1;
|
s->range_table = &range_digital;
|
s->insn_bits = pc263_do_insn_bits;
|
|
/* read initial relay state */
|
s->state = inb(dev->iobase + PC263_DO_0_7_REG) |
|
(inb(dev->iobase + PC263_DO_8_15_REG) << 8);
|
|
return 0;
|
}
|
|
static struct comedi_driver amplc_pc263_driver = {
|
.driver_name = "amplc_pc263",
|
.module = THIS_MODULE,
|
.attach = pc263_attach,
|
.detach = comedi_legacy_detach,
|
.board_name = &pc263_boards[0].name,
|
.offset = sizeof(struct pc263_board),
|
.num_names = ARRAY_SIZE(pc263_boards),
|
};
|
|
module_comedi_driver(amplc_pc263_driver);
|
|
MODULE_AUTHOR("Comedi https://www.comedi.org");
|
MODULE_DESCRIPTION("Comedi driver for Amplicon PC263 relay board");
|
MODULE_LICENSE("GPL");
|
