| /* |
| comedi/drivers/amplc_pci263.c |
| Driver for Amplicon PCI263 relay board. |
| |
| Copyright (C) 2002 MEV Ltd. <http://www.mev.co.uk/> |
| |
| COMEDI - Linux Control and Measurement Device Interface |
| Copyright (C) 2000 David A. Schleef <ds@schleef.org> |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| */ |
| /* |
| Driver: amplc_pci263 |
| Description: Amplicon PCI263 |
| Author: Ian Abbott <abbotti@mev.co.uk> |
| Devices: [Amplicon] PCI263 (amplc_pci263) |
| Updated: Fri, 12 Apr 2013 15:19:36 +0100 |
| Status: works |
| |
| Configuration options: not applicable, uses PCI auto config |
| |
| 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 <linux/pci.h> |
| |
| #include "../comedidev.h" |
| |
| #define PCI263_DRIVER_NAME "amplc_pci263" |
| |
| /* PCI263 PCI configuration register information */ |
| #define PCI_DEVICE_ID_AMPLICON_PCI263 0x000c |
| |
| static int pci263_do_insn_bits(struct comedi_device *dev, |
| struct comedi_subdevice *s, |
| struct comedi_insn *insn, unsigned int *data) |
| { |
| /* The insn data is a mask in data[0] and the new data |
| * in data[1], each channel cooresponding to a bit. */ |
| if (data[0]) { |
| s->state &= ~data[0]; |
| s->state |= data[0] & data[1]; |
| /* Write out the new digital output lines */ |
| outb(s->state & 0xFF, dev->iobase); |
| outb(s->state >> 8, dev->iobase + 1); |
| } |
| return insn->n; |
| } |
| |
| static int pci263_auto_attach(struct comedi_device *dev, |
| unsigned long context_unused) |
| { |
| struct pci_dev *pci_dev = comedi_to_pci_dev(dev); |
| struct comedi_subdevice *s; |
| int ret; |
| |
| ret = comedi_pci_enable(dev); |
| if (ret) |
| return ret; |
| |
| dev->iobase = pci_resource_start(pci_dev, 2); |
| ret = comedi_alloc_subdevices(dev, 1); |
| if (ret) |
| return ret; |
| |
| s = &dev->subdevices[0]; |
| /* digital output subdevice */ |
| s->type = COMEDI_SUBD_DO; |
| s->subdev_flags = SDF_READABLE | SDF_WRITABLE; |
| s->n_chan = 16; |
| s->maxdata = 1; |
| s->range_table = &range_digital; |
| s->insn_bits = pci263_do_insn_bits; |
| /* read initial relay state */ |
| s->state = inb(dev->iobase) | (inb(dev->iobase + 1) << 8); |
| |
| dev_info(dev->class_dev, "%s (pci %s) attached\n", dev->board_name, |
| pci_name(pci_dev)); |
| return 0; |
| } |
| |
| static struct comedi_driver amplc_pci263_driver = { |
| .driver_name = PCI263_DRIVER_NAME, |
| .module = THIS_MODULE, |
| .auto_attach = pci263_auto_attach, |
| .detach = comedi_pci_disable, |
| }; |
| |
| static DEFINE_PCI_DEVICE_TABLE(pci263_pci_table) = { |
| { PCI_DEVICE(PCI_VENDOR_ID_AMPLICON, PCI_DEVICE_ID_AMPLICON_PCI263) }, |
| {0} |
| }; |
| MODULE_DEVICE_TABLE(pci, pci263_pci_table); |
| |
| static int amplc_pci263_pci_probe(struct pci_dev *dev, |
| const struct pci_device_id *id) |
| { |
| return comedi_pci_auto_config(dev, &lc_pci263_driver, |
| id->driver_data); |
| } |
| |
| static struct pci_driver amplc_pci263_pci_driver = { |
| .name = PCI263_DRIVER_NAME, |
| .id_table = pci263_pci_table, |
| .probe = &lc_pci263_pci_probe, |
| .remove = comedi_pci_auto_unconfig, |
| }; |
| module_comedi_pci_driver(amplc_pci263_driver, amplc_pci263_pci_driver); |
| |
| MODULE_AUTHOR("Comedi http://www.comedi.org"); |
| MODULE_DESCRIPTION("Comedi driver for Amplicon PCI263 relay board"); |
| MODULE_LICENSE("GPL"); |