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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 
 27 #include "../comedi_pci.h"
 28 #include "addi_watchdog.h"
 29 
 30 /*
 31  * I/O Register Map
 32  */
 33 #define APCI2200_DI_REG                 0x00
 34 #define APCI2200_DO_REG                 0x04
 35 #define APCI2200_WDOG_REG               0x08
 36 
 37 static int apci2200_di_insn_bits(struct comedi_device *dev,
 38                                  struct comedi_subdevice *s,
 39                                  struct comedi_insn *insn,
 40                                  unsigned int *data)
 41 {
 42         data[1] = inw(dev->iobase + APCI2200_DI_REG);
 43 
 44         return insn->n;
 45 }
 46 
 47 static int apci2200_do_insn_bits(struct comedi_device *dev,
 48                                  struct comedi_subdevice *s,
 49                                  struct comedi_insn *insn,
 50                                  unsigned int *data)
 51 {
 52         s->state = inw(dev->iobase + APCI2200_DO_REG);
 53 
 54         if (comedi_dio_update_state(s, data))
 55                 outw(s->state, dev->iobase + APCI2200_DO_REG);
 56 
 57         data[1] = s->state;
 58 
 59         return insn->n;
 60 }
 61 
 62 static int apci2200_reset(struct comedi_device *dev)
 63 {
 64         outw(0x0, dev->iobase + APCI2200_DO_REG);
 65 
 66         addi_watchdog_reset(dev->iobase + APCI2200_WDOG_REG);
 67 
 68         return 0;
 69 }
 70 
 71 static int apci2200_auto_attach(struct comedi_device *dev,
 72                                 unsigned long context_unused)
 73 {
 74         struct pci_dev *pcidev = comedi_to_pci_dev(dev);
 75         struct comedi_subdevice *s;
 76         int ret;
 77 
 78         ret = comedi_pci_enable(dev);
 79         if (ret)
 80                 return ret;
 81 
 82         dev->iobase = pci_resource_start(pcidev, 1);
 83 
 84         ret = comedi_alloc_subdevices(dev, 3);
 85         if (ret)
 86                 return ret;
 87 
 88         /* Initialize the digital input subdevice */
 89         s = &dev->subdevices[0];
 90         s->type         = COMEDI_SUBD_DI;
 91         s->subdev_flags = SDF_READABLE;
 92         s->n_chan       = 8;
 93         s->maxdata      = 1;
 94         s->range_table  = &range_digital;
 95         s->insn_bits    = apci2200_di_insn_bits;
 96 
 97         /* Initialize the digital output subdevice */
 98         s = &dev->subdevices[1];
 99         s->type         = COMEDI_SUBD_DO;
100         s->subdev_flags = SDF_WRITABLE;
101         s->n_chan       = 16;
102         s->maxdata      = 1;
103         s->range_table  = &range_digital;
104         s->insn_bits    = apci2200_do_insn_bits;
105 
106         /* Initialize the watchdog subdevice */
107         s = &dev->subdevices[2];
108         ret = addi_watchdog_init(s, dev->iobase + APCI2200_WDOG_REG);
109         if (ret)
110                 return ret;
111 
112         apci2200_reset(dev);
113         return 0;
114 }
115 
116 static void apci2200_detach(struct comedi_device *dev)
117 {
118         if (dev->iobase)
119                 apci2200_reset(dev);
120         comedi_pci_detach(dev);
121 }
122 
123 static struct comedi_driver apci2200_driver = {
124         .driver_name    = "addi_apci_2200",
125         .module         = THIS_MODULE,
126         .auto_attach    = apci2200_auto_attach,
127         .detach         = apci2200_detach,
128 };
129 
130 static int apci2200_pci_probe(struct pci_dev *dev,
131                               const struct pci_device_id *id)
132 {
133         return comedi_pci_auto_config(dev, &apci2200_driver, id->driver_data);
134 }
135 
136 static const struct pci_device_id apci2200_pci_table[] = {
137         { PCI_DEVICE(PCI_VENDOR_ID_ADDIDATA, 0x1005) },
138         { 0 }
139 };
140 MODULE_DEVICE_TABLE(pci, apci2200_pci_table);
141 
142 static struct pci_driver apci2200_pci_driver = {
143         .name           = "addi_apci_2200",
144         .id_table       = apci2200_pci_table,
145         .probe          = apci2200_pci_probe,
146         .remove         = comedi_pci_auto_unconfig,
147 };
148 module_comedi_pci_driver(apci2200_driver, apci2200_pci_driver);
149 
150 MODULE_DESCRIPTION("ADDI-DATA APCI-2200 Relay board, optically isolated");
151 MODULE_AUTHOR("Comedi http://www.comedi.org");
152 MODULE_LICENSE("GPL");
153 

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