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 #if 0
  98 static int contec_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s,
  99                           struct comedi_cmd *cmd);
 100
 101 static int contec_ns_to_timer(unsigned int *ns, int round);
 102 #endif
 103
 104 static int contec_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 105 {
 106         struct pci_dev *pcidev = NULL;
 107         struct comedi_subdevice *s;
 108
 109         printk("comedi%d: contec: ", dev->minor);
 110
 111         dev->board_name = thisboard->name;
 112
 113         if (alloc_private(dev, sizeof(struct contec_private)) < 0)
 114                 return -ENOMEM;
 115
 116         if (alloc_subdevices(dev, 2) < 0)
 117                 return -ENOMEM;
 118
 119         for_each_pci_dev(pcidev) {
 120                 if (pcidev->vendor == PCI_VENDOR_ID_CONTEC &&
 121                     pcidev->device == PCI_DEVICE_ID_PIO1616L) {
 122                         if (it->options[0] || it->options[1]) {
 123                                 /* Check bus and slot. */
 124                                 if (it->options[0] != pcidev->bus->number ||
 125                                     it->options[1] != PCI_SLOT(pcidev->devfn)) {
 126                                         continue;
 127                                 }
 128                         }
 129                         devpriv->pci_dev = pcidev;
 130                         if (comedi_pci_enable(pcidev, "contec_pci_dio")) {
 131                                 printk
 132                                     ("error enabling PCI device and request regions!\n");
 133                                 return -EIO;
 134                         }
 135                         dev->iobase = pci_resource_start(pcidev, 0);
 136                         printk(" base addr %lx ", dev->iobase);
 137
 138                         dev->board_ptr = contec_boards + 0;
 139
 140                         s = dev->subdevices + 0;
 141
 142                         s->type = COMEDI_SUBD_DI;
 143                         s->subdev_flags = SDF_READABLE;
 144                         s->n_chan = 16;
 145                         s->maxdata = 1;
 146                         s->range_table = &range_digital;
 147                         s->insn_bits = contec_di_insn_bits;
 148
 149                         s = dev->subdevices + 1;
 150                         s->type = COMEDI_SUBD_DO;
 151                         s->subdev_flags = SDF_WRITABLE;
 152                         s->n_chan = 16;
 153                         s->maxdata = 1;
 154                         s->range_table = &range_digital;
 155                         s->insn_bits = contec_do_insn_bits;
 156
 157                         printk("attached\n");
 158
 159                         return 1;
 160                 }
 161         }
 162
 163         printk("card not present!\n");
 164
 165         return -EIO;
 166 }
 167
 168 static int contec_detach(struct comedi_device *dev)
 169 {
 170         printk("comedi%d: contec: remove\n", dev->minor);
 171
 172         if (devpriv && devpriv->pci_dev) {
 173                 if (dev->iobase)
 174                         comedi_pci_disable(devpriv->pci_dev);
 175                 pci_dev_put(devpriv->pci_dev);
 176         }
 177
 178         return 0;
 179 }
 180
 181 #if 0
 182 static int contec_cmdtest(struct comedi_device *dev, struct comedi_subdevice *s,
 183                           struct comedi_cmd *cmd)
 184 {
 185         printk("contec_cmdtest called\n");
 186         return 0;
 187 }
 188
 189 static int contec_ns_to_timer(unsigned int *ns, int round)
 190 {
 191         return *ns;
 192 }
 193 #endif
 194
 195 static int contec_do_insn_bits(struct comedi_device *dev,
 196                                struct comedi_subdevice *s,
 197                                struct comedi_insn *insn, unsigned int *data)
 198 {
 199
 200         printk("contec_do_insn_bits called\n");
 201         printk(" data: %d %d\n", data[0], data[1]);
 202
 203         if (insn->n != 2)
 204                 return -EINVAL;
 205
 206         if (data[0]) {
 207                 s->state &= ~data[0];
 208                 s->state |= data[0] & data[1];
 209                 printk("  out: %d on %lx\n", s->state,
 210                        dev->iobase + thisboard->out_offs);
 211                 outw(s->state, dev->iobase + thisboard->out_offs);
 212         }
 213         return 2;
 214 }
 215
 216 static int contec_di_insn_bits(struct comedi_device *dev,
 217                                struct comedi_subdevice *s,
 218                                struct comedi_insn *insn, unsigned int *data)
 219 {
 220
 221         printk("contec_di_insn_bits called\n");
 222         printk(" data: %d %d\n", data[0], data[1]);
 223
 224         if (insn->n != 2)
 225                 return -EINVAL;
 226
 227         data[1] = inw(dev->iobase + thisboard->in_offs);
 228
 229         return 2;
 230 }
 231
 232 static int __devinit driver_contec_pci_probe(struct pci_dev *dev,
 233                                              const struct pci_device_id *ent)
 234 {
 235         return comedi_pci_auto_config(dev, driver_contec.driver_name);
 236 }
 237
 238 static void __devexit driver_contec_pci_remove(struct pci_dev *dev)
 239 {
 240         comedi_pci_auto_unconfig(dev);
 241 }
 242
 243 static struct pci_driver driver_contec_pci_driver = {
 244         .id_table = contec_pci_table,
 245         .probe = &driver_contec_pci_probe,
 246         .remove = __devexit_p(&driver_contec_pci_remove)
 247 };
 248
 249 static int __init driver_contec_init_module(void)
 250 {
 251         int retval;
 252
 253         retval = comedi_driver_register(&driver_contec);
 254         if (retval < 0)
 255                 return retval;
 256
 257         driver_contec_pci_driver.name = (char *)driver_contec.driver_name;
 258         return pci_register_driver(&driver_contec_pci_driver);
 259 }
 260
 261 static void __exit driver_contec_cleanup_module(void)
 262 {
 263         pci_unregister_driver(&driver_contec_pci_driver);
 264         comedi_driver_unregister(&driver_contec);
 265 }
 266
 267 module_init(driver_contec_init_module);
 268 module_exit(driver_contec_cleanup_module);
 269
 270 MODULE_AUTHOR("Comedi http://www.comedi.org");
 271 MODULE_DESCRIPTION("Comedi low-level driver");
 272 MODULE_LICENSE("GPL");