drivers/staging/comedi/drivers/addi_apci_1516.c

   1 /*
   2  * addi_apci_1516.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 #include "comedi_fc.h"
  31
  32 /*
  33  * PCI bar 1 I/O Register map - Digital input/output
  34  */
  35 #define APCI1516_DI_REG                 0x00
  36 #define APCI1516_DO_REG                 0x04
  37
  38 /*
  39  * PCI bar 2 I/O Register map - Watchdog (APCI-1516 and APCI-2016)
  40  */
  41 #define APCI1516_WDOG_REG               0x00
  42
  43 enum apci1516_boardid {
  44         BOARD_APCI1016,
  45         BOARD_APCI1516,
  46         BOARD_APCI2016,
  47 };
  48
  49 struct apci1516_boardinfo {
  50         const char *name;
  51         int di_nchan;
  52         int do_nchan;
  53         int has_wdog;
  54 };
  55
  56 static const struct apci1516_boardinfo apci1516_boardtypes[] = {
  57         [BOARD_APCI1016] = {
  58                 .name           = "apci1016",
  59                 .di_nchan       = 16,
  60         },
  61         [BOARD_APCI1516] = {
  62                 .name           = "apci1516",
  63                 .di_nchan       = 8,
  64                 .do_nchan       = 8,
  65                 .has_wdog       = 1,
  66         },
  67         [BOARD_APCI2016] = {
  68                 .name           = "apci2016",
  69                 .do_nchan       = 16,
  70                 .has_wdog       = 1,
  71         },
  72 };
  73
  74 struct apci1516_private {
  75         unsigned long wdog_iobase;
  76 };
  77
  78 static int apci1516_di_insn_bits(struct comedi_device *dev,
  79                                  struct comedi_subdevice *s,
  80                                  struct comedi_insn *insn,
  81                                  unsigned int *data)
  82 {
  83         data[1] = inw(dev->iobase + APCI1516_DI_REG);
  84
  85         return insn->n;
  86 }
  87
  88 static int apci1516_do_insn_bits(struct comedi_device *dev,
  89                                  struct comedi_subdevice *s,
  90                                  struct comedi_insn *insn,
  91                                  unsigned int *data)
  92 {
  93         s->state = inw(dev->iobase + APCI1516_DO_REG);
  94
  95         if (comedi_dio_update_state(s, data))
  96                 outw(s->state, dev->iobase + APCI1516_DO_REG);
  97
  98         data[1] = s->state;
  99
 100         return insn->n;
 101 }
 102
 103 static int apci1516_reset(struct comedi_device *dev)
 104 {
 105         const struct apci1516_boardinfo *this_board = comedi_board(dev);
 106         struct apci1516_private *devpriv = dev->private;
 107
 108         if (!this_board->has_wdog)
 109                 return 0;
 110
 111         outw(0x0, dev->iobase + APCI1516_DO_REG);
 112
 113         addi_watchdog_reset(devpriv->wdog_iobase);
 114
 115         return 0;
 116 }
 117
 118 static int apci1516_auto_attach(struct comedi_device *dev,
 119                                 unsigned long context)
 120 {
 121         struct pci_dev *pcidev = comedi_to_pci_dev(dev);
 122         const struct apci1516_boardinfo *this_board = NULL;
 123         struct apci1516_private *devpriv;
 124         struct comedi_subdevice *s;
 125         int ret;
 126
 127         if (context < ARRAY_SIZE(apci1516_boardtypes))
 128                 this_board = &apci1516_boardtypes[context];
 129         if (!this_board)
 130                 return -ENODEV;
 131         dev->board_ptr = this_board;
 132         dev->board_name = this_board->name;
 133
 134         devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
 135         if (!devpriv)
 136                 return -ENOMEM;
 137
 138         ret = comedi_pci_enable(dev);
 139         if (ret)
 140                 return ret;
 141
 142         dev->iobase = pci_resource_start(pcidev, 1);
 143         devpriv->wdog_iobase = pci_resource_start(pcidev, 2);
 144
 145         ret = comedi_alloc_subdevices(dev, 3);
 146         if (ret)
 147                 return ret;
 148
 149         /* Initialize the digital input subdevice */
 150         s = &dev->subdevices[0];
 151         if (this_board->di_nchan) {
 152                 s->type         = COMEDI_SUBD_DI;
 153                 s->subdev_flags = SDF_READABLE;
 154                 s->n_chan       = this_board->di_nchan;
 155                 s->maxdata      = 1;
 156                 s->range_table  = &range_digital;
 157                 s->insn_bits    = apci1516_di_insn_bits;
 158         } else {
 159                 s->type         = COMEDI_SUBD_UNUSED;
 160         }
 161
 162         /* Initialize the digital output subdevice */
 163         s = &dev->subdevices[1];
 164         if (this_board->do_nchan) {
 165                 s->type         = COMEDI_SUBD_DO;
 166                 s->subdev_flags = SDF_WRITEABLE;
 167                 s->n_chan       = this_board->do_nchan;
 168                 s->maxdata      = 1;
 169                 s->range_table  = &range_digital;
 170                 s->insn_bits    = apci1516_do_insn_bits;
 171         } else {
 172                 s->type         = COMEDI_SUBD_UNUSED;
 173         }
 174
 175         /* Initialize the watchdog subdevice */
 176         s = &dev->subdevices[2];
 177         if (this_board->has_wdog) {
 178                 ret = addi_watchdog_init(s, devpriv->wdog_iobase);
 179                 if (ret)
 180                         return ret;
 181         } else {
 182                 s->type         = COMEDI_SUBD_UNUSED;
 183         }
 184
 185         apci1516_reset(dev);
 186         return 0;
 187 }
 188
 189 static void apci1516_detach(struct comedi_device *dev)
 190 {
 191         if (dev->iobase)
 192                 apci1516_reset(dev);
 193         comedi_pci_disable(dev);
 194 }
 195
 196 static struct comedi_driver apci1516_driver = {
 197         .driver_name    = "addi_apci_1516",
 198         .module         = THIS_MODULE,
 199         .auto_attach    = apci1516_auto_attach,
 200         .detach         = apci1516_detach,
 201 };
 202
 203 static int apci1516_pci_probe(struct pci_dev *dev,
 204                               const struct pci_device_id *id)
 205 {
 206         return comedi_pci_auto_config(dev, &apci1516_driver, id->driver_data);
 207 }
 208
 209 static DEFINE_PCI_DEVICE_TABLE(apci1516_pci_table) = {
 210         { PCI_VDEVICE(ADDIDATA, 0x1000), BOARD_APCI1016 },
 211         { PCI_VDEVICE(ADDIDATA, 0x1001), BOARD_APCI1516 },
 212         { PCI_VDEVICE(ADDIDATA, 0x1002), BOARD_APCI2016 },
 213         { 0 }
 214 };
 215 MODULE_DEVICE_TABLE(pci, apci1516_pci_table);
 216
 217 static struct pci_driver apci1516_pci_driver = {
 218         .name           = "addi_apci_1516",
 219         .id_table       = apci1516_pci_table,
 220         .probe          = apci1516_pci_probe,
 221         .remove         = comedi_pci_auto_unconfig,
 222 };
 223 module_comedi_pci_driver(apci1516_driver, apci1516_pci_driver);
 224
 225 MODULE_DESCRIPTION("ADDI-DATA APCI-1016/1516/2016, 16 channel DIO boards");
 226 MODULE_AUTHOR("Comedi http://www.comedi.org");
 227 MODULE_LICENSE("GPL");