release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/staging/comedi/drivers/contec_pci_dio.c

   1 /*
   2     comedi/drivers/contec_pci_dio.c
   3
   4     COMEDI - Linux Control and Measurement Device Interface
   5     Copyright (C) 2000 David A. Schleef <ds@schleef.org>
   6
   7     This program is free software; you can redistribute it and/or modify
   8     it under the terms of the GNU General Public License as published by
   9     the Free Software Foundation; either version 2 of the License, or
  10     (at your option) any later version.
  11
  12     This program is distributed in the hope that it will be useful,
  13     but WITHOUT ANY WARRANTY; without even the implied warranty of
  14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15     GNU General Public License for more details.
  16
  17     You should have received a copy of the GNU General Public License
  18     along with this program; if not, write to the Free Software
  19     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20
  21 */
  22 /*
  23 Driver: contec_pci_dio
  24 Description: Contec PIO1616L digital I/O board
  25 Devices: [Contec] PIO1616L (contec_pci_dio)
  26 Author: Stefano Rivoir <s.rivoir@gts.it>
  27 Updated: Wed, 27 Jun 2007 13:00:06 +0100
  28 Status: works
  29
  30 Configuration Options:
  31   [0] - PCI bus of device (optional)
  32   [1] - PCI slot of device (optional)
  33   If bus/slot is not specified, the first supported
  34   PCI device found will be used.
  35 */
  36
  37 #include "../comedidev.h"
  38
  39 #include "comedi_pci.h"
  40
  41 enum contec_model {
  42         PIO1616L = 0,
  43 };
  44
  45 struct contec_board {
  46         const char *name;
  47         int model;
  48         int in_ports;
  49         int out_ports;
  50         int in_offs;
  51         int out_offs;
  52         int out_boffs;
  53 };
  54 static const struct contec_board contec_boards[] = {
  55         {"PIO1616L", PIO1616L, 16, 16, 0, 2, 10},
  56 };
  57
  58 #define PCI_DEVICE_ID_PIO1616L 0x8172
  59 static DEFINE_PCI_DEVICE_TABLE(contec_pci_table) = {
  60         {
  61         PCI_VENDOR_ID_CONTEC, PCI_DEVICE_ID_PIO1616L, PCI_ANY_ID,
  62                     PCI_ANY_ID, 0, 0, PIO1616L}, {
  63         0}
  64 };
  65
  66 MODULE_DEVICE_TABLE(pci, contec_pci_table);
  67
  68 #define thisboard ((const struct contec_board *)dev->board_ptr)
  69
  70 struct contec_private {
  71         int data;
  72
  73         struct pci_dev *pci_dev;
  74
  75 };
  76
  77 #define devpriv ((struct contec_private *)dev->private)
  78
  79 static int contec_attach(struct comedi_device *dev,
  80                          struct comedi_devconfig *it);
  81 static int contec_detach(struct comedi_device *dev);
  82 static struct comedi_driver driver_contec = {
  83         .driver_name = "contec_pci_dio",
  84         .module = THIS_MODULE,
  85         .attach = contec_attach,
  86         .detach = contec_detach,
  87 };
  88
  89 /* Classic digital IO */
  90 static int contec_di_insn_bits(struct comedi_device *dev,
  91                                struct comedi_subdevice *s,
  92                                struct comedi_insn *insn, unsigned int *data);
  93 static int contec_do_insn_bits(struct comedi_device *dev,
  94                                struct comedi_subdevice *s,
  95                                struct comedi_insn *insn, unsigned int *data);
  96
  97
  98 static int contec_attach(struct comedi_device *dev, struct comedi_devconfig *it)
  99 {
 100         struct pci_dev *pcidev = NULL;
 101         struct comedi_subdevice *s;
 102
 103         printk("comedi%d: contec: ", dev->minor);
 104
 105         dev->board_name = thisboard->name;
 106
 107         if (alloc_private(dev, sizeof(struct contec_private)) < 0)
 108                 return -ENOMEM;
 109
 110         if (alloc_subdevices(dev, 2) < 0)
 111                 return -ENOMEM;
 112
 113         for_each_pci_dev(pcidev) {
 114                 if (pcidev->vendor == PCI_VENDOR_ID_CONTEC &&
 115                     pcidev->device == PCI_DEVICE_ID_PIO1616L) {
 116                         if (it->options[0] || it->options[1]) {
 117                                 /* Check bus and slot. */
 118                                 if (it->options[0] != pcidev->bus->number ||
 119                                     it->options[1] != PCI_SLOT(pcidev->devfn)) {
 120                                         continue;
 121                                 }
 122                         }
 123                         devpriv->pci_dev = pcidev;
 124                         if (comedi_pci_enable(pcidev, "contec_pci_dio")) {
 125                                 printk
 126                                     ("error enabling PCI device and request regions!\n");
 127                                 return -EIO;
 128                         }
 129                         dev->iobase = pci_resource_start(pcidev, 0);
 130                         printk(" base addr %lx ", dev->iobase);
 131
 132                         dev->board_ptr = contec_boards + 0;
 133
 134                         s = dev->subdevices + 0;
 135
 136                         s->type = COMEDI_SUBD_DI;
 137                         s->subdev_flags = SDF_READABLE;
 138                         s->n_chan = 16;
 139                         s->maxdata = 1;
 140                         s->range_table = &range_digital;
 141                         s->insn_bits = contec_di_insn_bits;
 142
 143                         s = dev->subdevices + 1;
 144                         s->type = COMEDI_SUBD_DO;
 145                         s->subdev_flags = SDF_WRITABLE;
 146                         s->n_chan = 16;
 147                         s->maxdata = 1;
 148                         s->range_table = &range_digital;
 149                         s->insn_bits = contec_do_insn_bits;
 150
 151                         printk("attached\n");
 152
 153                         return 1;
 154                 }
 155         }
 156
 157         printk("card not present!\n");
 158
 159         return -EIO;
 160 }
 161
 162 static int contec_detach(struct comedi_device *dev)
 163 {
 164         printk("comedi%d: contec: remove\n", dev->minor);
 165
 166         if (devpriv && devpriv->pci_dev) {
 167                 if (dev->iobase)
 168                         comedi_pci_disable(devpriv->pci_dev);
 169                 pci_dev_put(devpriv->pci_dev);
 170         }
 171
 172         return 0;
 173 }
 174
 175
 176 static int contec_do_insn_bits(struct comedi_device *dev,
 177                                struct comedi_subdevice *s,
 178                                struct comedi_insn *insn, unsigned int *data)
 179 {
 180
 181         printk("contec_do_insn_bits called\n");
 182         printk(" data: %d %d\n", data[0], data[1]);
 183
 184         if (insn->n != 2)
 185                 return -EINVAL;
 186
 187         if (data[0]) {
 188                 s->state &= ~data[0];
 189                 s->state |= data[0] & data[1];
 190                 printk("  out: %d on %lx\n", s->state,
 191                        dev->iobase + thisboard->out_offs);
 192                 outw(s->state, dev->iobase + thisboard->out_offs);
 193         }
 194         return 2;
 195 }
 196
 197 static int contec_di_insn_bits(struct comedi_device *dev,
 198                                struct comedi_subdevice *s,
 199                                struct comedi_insn *insn, unsigned int *data)
 200 {
 201
 202         printk("contec_di_insn_bits called\n");
 203         printk(" data: %d %d\n", data[0], data[1]);
 204
 205         if (insn->n != 2)
 206                 return -EINVAL;
 207
 208         data[1] = inw(dev->iobase + thisboard->in_offs);
 209
 210         return 2;
 211 }
 212
 213 static int __devinit driver_contec_pci_probe(struct pci_dev *dev,
 214                                              const struct pci_device_id *ent)
 215 {
 216         return comedi_pci_auto_config(dev, driver_contec.driver_name);
 217 }
 218
 219 static void __devexit driver_contec_pci_remove(struct pci_dev *dev)
 220 {
 221         comedi_pci_auto_unconfig(dev);
 222 }
 223
 224 static struct pci_driver driver_contec_pci_driver = {
 225         .id_table = contec_pci_table,
 226         .probe = &driver_contec_pci_probe,
 227         .remove = __devexit_p(&driver_contec_pci_remove)
 228 };
 229
 230 static int __init driver_contec_init_module(void)
 231 {
 232         int retval;
 233
 234         retval = comedi_driver_register(&driver_contec);
 235         if (retval < 0)
 236                 return retval;
 237
 238         driver_contec_pci_driver.name = (char *)driver_contec.driver_name;
 239         return pci_register_driver(&driver_contec_pci_driver);
 240 }
 241
 242 static void __exit driver_contec_cleanup_module(void)
 243 {
 244         pci_unregister_driver(&driver_contec_pci_driver);
 245         comedi_driver_unregister(&driver_contec);
 246 }
 247
 248 module_init(driver_contec_init_module);
 249 module_exit(driver_contec_cleanup_module);
 250
 251 MODULE_AUTHOR("Comedi http://www.comedi.org");
 252 MODULE_DESCRIPTION("Comedi low-level driver");
 253 MODULE_LICENSE("GPL");