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Linux/drivers/staging/comedi/drivers/addi_apci_2200.c

  1 /*
  2  * addi_apci_2200.c
  3  * Copyright (C) 2004,2005  ADDI-DATA GmbH for the source code of this module.
  4  * Project manager: Eric Stolz
  5  *
  6  *      ADDI-DATA GmbH
  7  *      Dieselstrasse 3
  8  *      D-77833 Ottersweier
  9  *      Tel: +19(0)7223/9493-0
 10  *      Fax: +49(0)7223/9493-92
 11  *      http://www.addi-data.com
 12  *      info@addi-data.com
 13  *
 14  * This program is free software; you can redistribute it and/or modify it
 15  * under the terms of the GNU General Public License as published by the
 16  * Free Software Foundation; either version 2 of the License, or (at your
 17  * option) any later version.
 18  *
 19  * This program is distributed in the hope that it will be useful, but WITHOUT
 20  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 21  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 22  * more details.
 23  */
 24 
 25 #include <linux/module.h>
 26 #include <linux/pci.h>
 27 
 28 #include "../comedidev.h"
 29 #include "addi_watchdog.h"
 30 
 31 /*
 32  * I/O Register Map
 33  */
 34 #define APCI2200_DI_REG                 0x00
 35 #define APCI2200_DO_REG                 0x04
 36 #define APCI2200_WDOG_REG               0x08
 37 
 38 static int apci2200_di_insn_bits(struct comedi_device *dev,
 39                                  struct comedi_subdevice *s,
 40                                  struct comedi_insn *insn,
 41                                  unsigned int *data)
 42 {
 43         data[1] = inw(dev->iobase + APCI2200_DI_REG);
 44 
 45         return insn->n;
 46 }
 47 
 48 static int apci2200_do_insn_bits(struct comedi_device *dev,
 49                                  struct comedi_subdevice *s,
 50                                  struct comedi_insn *insn,
 51                                  unsigned int *data)
 52 {
 53         s->state = inw(dev->iobase + APCI2200_DO_REG);
 54 
 55         if (comedi_dio_update_state(s, data))
 56                 outw(s->state, dev->iobase + APCI2200_DO_REG);
 57 
 58         data[1] = s->state;
 59 
 60         return insn->n;
 61 }
 62 
 63 static int apci2200_reset(struct comedi_device *dev)
 64 {
 65         outw(0x0, dev->iobase + APCI2200_DO_REG);
 66 
 67         addi_watchdog_reset(dev->iobase + APCI2200_WDOG_REG);
 68 
 69         return 0;
 70 }
 71 
 72 static int apci2200_auto_attach(struct comedi_device *dev,
 73                                 unsigned long context_unused)
 74 {
 75         struct pci_dev *pcidev = comedi_to_pci_dev(dev);
 76         struct comedi_subdevice *s;
 77         int ret;
 78 
 79         ret = comedi_pci_enable(dev);
 80         if (ret)
 81                 return ret;
 82 
 83         dev->iobase = pci_resource_start(pcidev, 1);
 84 
 85         ret = comedi_alloc_subdevices(dev, 3);
 86         if (ret)
 87                 return ret;
 88 
 89         /* Initialize the digital input subdevice */
 90         s = &dev->subdevices[0];
 91         s->type         = COMEDI_SUBD_DI;
 92         s->subdev_flags = SDF_READABLE;
 93         s->n_chan       = 8;
 94         s->maxdata      = 1;
 95         s->range_table  = &range_digital;
 96         s->insn_bits    = apci2200_di_insn_bits;
 97 
 98         /* Initialize the digital output subdevice */
 99         s = &dev->subdevices[1];
100         s->type         = COMEDI_SUBD_DO;
101         s->subdev_flags = SDF_WRITEABLE;
102         s->n_chan       = 16;
103         s->maxdata      = 1;
104         s->range_table  = &range_digital;
105         s->insn_bits    = apci2200_do_insn_bits;
106 
107         /* Initialize the watchdog subdevice */
108         s = &dev->subdevices[2];
109         ret = addi_watchdog_init(s, dev->iobase + APCI2200_WDOG_REG);
110         if (ret)
111                 return ret;
112 
113         apci2200_reset(dev);
114         return 0;
115 }
116 
117 static void apci2200_detach(struct comedi_device *dev)
118 {
119         if (dev->iobase)
120                 apci2200_reset(dev);
121         comedi_pci_disable(dev);
122 }
123 
124 static struct comedi_driver apci2200_driver = {
125         .driver_name    = "addi_apci_2200",
126         .module         = THIS_MODULE,
127         .auto_attach    = apci2200_auto_attach,
128         .detach         = apci2200_detach,
129 };
130 
131 static int apci2200_pci_probe(struct pci_dev *dev,
132                               const struct pci_device_id *id)
133 {
134         return comedi_pci_auto_config(dev, &apci2200_driver, id->driver_data);
135 }
136 
137 static const struct pci_device_id apci2200_pci_table[] = {
138         { PCI_DEVICE(PCI_VENDOR_ID_ADDIDATA, 0x1005) },
139         { 0 }
140 };
141 MODULE_DEVICE_TABLE(pci, apci2200_pci_table);
142 
143 static struct pci_driver apci2200_pci_driver = {
144         .name           = "addi_apci_2200",
145         .id_table       = apci2200_pci_table,
146         .probe          = apci2200_pci_probe,
147         .remove         = comedi_pci_auto_unconfig,
148 };
149 module_comedi_pci_driver(apci2200_driver, apci2200_pci_driver);
150 
151 MODULE_DESCRIPTION("ADDI-DATA APCI-2200 Relay board, optically isolated");
152 MODULE_AUTHOR("Comedi http://www.comedi.org");
153 MODULE_LICENSE("GPL");
154 

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