drivers/staging/comedi/drivers/adl_pci7432.c

   1 /*
   2     comedi/drivers/adl_pci7432.c
   3
   4     Hardware comedi driver fot PCI7432 Adlink card
   5     Copyright (C) 2004 Michel Lachine <mike@mikelachaine.ca>
   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: adl_pci7432
  24 Description: Driver for the Adlink PCI-7432 64 ch. isolated digital io board
  25 Devices: [ADLink] PCI-7432 (adl_pci7432)
  26 Author: Michel Lachaine <mike@mikelachaine.ca>
  27 Status: experimental
  28 Updated: Mon, 14 Apr 2008 15:08:14 +0100
  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 #include <linux/kernel.h>
  39 #include "comedi_pci.h"
  40
  41 #define PCI7432_DI      0x00
  42 #define PCI7432_DO          0x00
  43
  44 #define PCI_DEVICE_ID_PCI7432 0x7432
  45
  46 static DEFINE_PCI_DEVICE_TABLE(adl_pci7432_pci_table) = {
  47         {
  48         PCI_VENDOR_ID_ADLINK, PCI_DEVICE_ID_PCI7432, PCI_ANY_ID,
  49                     PCI_ANY_ID, 0, 0, 0}, {
  50         0}
  51 };
  52
  53 MODULE_DEVICE_TABLE(pci, adl_pci7432_pci_table);
  54
  55 struct adl_pci7432_private {
  56         int data;
  57         struct pci_dev *pci_dev;
  58 };
  59
  60 #define devpriv ((struct adl_pci7432_private *)dev->private)
  61
  62 static int adl_pci7432_attach(struct comedi_device *dev,
  63                               struct comedi_devconfig *it);
  64 static int adl_pci7432_detach(struct comedi_device *dev);
  65 static struct comedi_driver driver_adl_pci7432 = {
  66         .driver_name = "adl_pci7432",
  67         .module = THIS_MODULE,
  68         .attach = adl_pci7432_attach,
  69         .detach = adl_pci7432_detach,
  70 };
  71
  72 /* Digital IO */
  73
  74 static int adl_pci7432_di_insn_bits(struct comedi_device *dev,
  75                                     struct comedi_subdevice *s,
  76                                     struct comedi_insn *insn,
  77                                     unsigned int *data);
  78
  79 static int adl_pci7432_do_insn_bits(struct comedi_device *dev,
  80                                     struct comedi_subdevice *s,
  81                                     struct comedi_insn *insn,
  82                                     unsigned int *data);
  83
  84 /*            */
  85
  86 static int adl_pci7432_attach(struct comedi_device *dev,
  87                               struct comedi_devconfig *it)
  88 {
  89         struct pci_dev *pcidev;
  90         struct comedi_subdevice *s;
  91         int bus, slot;
  92
  93         printk(KERN_INFO "comedi%d: attach adl_pci7432\n", dev->minor);
  94
  95         dev->board_name = "pci7432";
  96         bus = it->options[0];
  97         slot = it->options[1];
  98
  99         if (alloc_private(dev, sizeof(struct adl_pci7432_private)) < 0)
 100                 return -ENOMEM;
 101
 102         if (alloc_subdevices(dev, 2) < 0)
 103                 return -ENOMEM;
 104
 105         for (pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL);
 106              pcidev != NULL;
 107              pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pcidev)) {
 108
 109                 if (pcidev->vendor == PCI_VENDOR_ID_ADLINK &&
 110                     pcidev->device == PCI_DEVICE_ID_PCI7432) {
 111                         if (bus || slot) {
 112                                 /* requested particular bus/slot */
 113                                 if (pcidev->bus->number != bus
 114                                     || PCI_SLOT(pcidev->devfn) != slot) {
 115                                         continue;
 116                                 }
 117                         }
 118                         devpriv->pci_dev = pcidev;
 119                         if (comedi_pci_enable(pcidev, "adl_pci7432") < 0) {
 120                                 printk(KERN_ERR "comedi%d: Failed to enable PCI device and request regions\n",
 121                                      dev->minor);
 122                                 return -EIO;
 123                         }
 124                         dev->iobase = pci_resource_start(pcidev, 2);
 125                         printk(KERN_INFO "comedi: base addr %4lx\n",
 126                                 dev->iobase);
 127
 128                         s = dev->subdevices + 0;
 129                         s->type = COMEDI_SUBD_DI;
 130                         s->subdev_flags =
 131                             SDF_READABLE | SDF_GROUND | SDF_COMMON;
 132                         s->n_chan = 32;
 133                         s->maxdata = 1;
 134                         s->len_chanlist = 32;
 135                         s->io_bits = 0x00000000;
 136                         s->range_table = &range_digital;
 137                         s->insn_bits = adl_pci7432_di_insn_bits;
 138
 139                         s = dev->subdevices + 1;
 140                         s->type = COMEDI_SUBD_DO;
 141                         s->subdev_flags =
 142                             SDF_WRITABLE | SDF_GROUND | SDF_COMMON;
 143                         s->n_chan = 32;
 144                         s->maxdata = 1;
 145                         s->len_chanlist = 32;
 146                         s->io_bits = 0xffffffff;
 147                         s->range_table = &range_digital;
 148                         s->insn_bits = adl_pci7432_do_insn_bits;
 149
 150                         printk(KERN_DEBUG "comedi%d: adl_pci7432 attached\n",
 151                                 dev->minor);
 152                         return 1;
 153                 }
 154         }
 155
 156         printk(KERN_ERR "comedi%d: no supported board found! (req. bus/slot : %d/%d)\n",
 157                dev->minor, bus, slot);
 158         return -EIO;
 159 }
 160
 161 static int adl_pci7432_detach(struct comedi_device *dev)
 162 {
 163         printk(KERN_INFO "comedi%d: pci7432: remove\n", dev->minor);
 164
 165         if (devpriv && devpriv->pci_dev) {
 166                 if (dev->iobase)
 167                         comedi_pci_disable(devpriv->pci_dev);
 168                 pci_dev_put(devpriv->pci_dev);
 169         }
 170
 171         return 0;
 172 }
 173
 174 static int adl_pci7432_do_insn_bits(struct comedi_device *dev,
 175                                     struct comedi_subdevice *s,
 176                                     struct comedi_insn *insn,
 177                                     unsigned int *data)
 178 {
 179         printk(KERN_DEBUG "comedi: pci7432_do_insn_bits called\n");
 180         printk(KERN_DEBUG "comedi: data0: %8x data1: %8x\n", data[0], data[1]);
 181
 182         if (insn->n != 2)
 183                 return -EINVAL;
 184
 185         if (data[0]) {
 186                 s->state &= ~data[0];
 187                 s->state |= (data[0] & data[1]);
 188
 189                 printk(KERN_DEBUG "comedi: out: %8x on iobase %4lx\n", s->state,
 190                        dev->iobase + PCI7432_DO);
 191                 outl(s->state & 0xffffffff, dev->iobase + PCI7432_DO);
 192         }
 193         return 2;
 194 }
 195
 196 static int adl_pci7432_di_insn_bits(struct comedi_device *dev,
 197                                     struct comedi_subdevice *s,
 198                                     struct comedi_insn *insn,
 199                                     unsigned int *data)
 200 {
 201         printk(KERN_DEBUG "comedi: pci7432_di_insn_bits called\n");
 202         printk(KERN_DEBUG "comedi: data0: %8x data1: %8x\n", data[0], data[1]);
 203
 204         if (insn->n != 2)
 205                 return -EINVAL;
 206
 207         data[1] = inl(dev->iobase + PCI7432_DI) & 0xffffffff;
 208         printk(KERN_DEBUG "comedi: data1 %8x\n", data[1]);
 209
 210         return 2;
 211 }
 212
 213 static int __devinit driver_adl_pci7432_pci_probe(struct pci_dev *dev,
 214                                                   const struct pci_device_id
 215                                                   *ent)
 216 {
 217         return comedi_pci_auto_config(dev, driver_adl_pci7432.driver_name);
 218 }
 219
 220 static void __devexit driver_adl_pci7432_pci_remove(struct pci_dev *dev)
 221 {
 222         comedi_pci_auto_unconfig(dev);
 223 }
 224
 225 static struct pci_driver driver_adl_pci7432_pci_driver = {
 226         .id_table = adl_pci7432_pci_table,
 227         .probe = &driver_adl_pci7432_pci_probe,
 228         .remove = __devexit_p(&driver_adl_pci7432_pci_remove)
 229 };
 230
 231 static int __init driver_adl_pci7432_init_module(void)
 232 {
 233         int retval;
 234
 235         retval = comedi_driver_register(&driver_adl_pci7432);
 236         if (retval < 0)
 237                 return retval;
 238
 239         driver_adl_pci7432_pci_driver.name =
 240             (char *)driver_adl_pci7432.driver_name;
 241         return pci_register_driver(&driver_adl_pci7432_pci_driver);
 242 }
 243
 244 static void __exit driver_adl_pci7432_cleanup_module(void)
 245 {
 246         pci_unregister_driver(&driver_adl_pci7432_pci_driver);
 247         comedi_driver_unregister(&driver_adl_pci7432);
 248 }
 249
 250 module_init(driver_adl_pci7432_init_module);
 251 module_exit(driver_adl_pci7432_cleanup_module);
 252
 253 MODULE_AUTHOR("Comedi http://www.comedi.org");
 254 MODULE_DESCRIPTION("Comedi low-level driver");
 255 MODULE_LICENSE("GPL");