drivers/staging/comedi/drivers/adl_pci7296.c

   1 /*
   2     comedi/drivers/adl_pci7296.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: adl_pci7296
  24 Description: Driver for the Adlink PCI-7296 96 ch. digital io board
  25 Devices: [ADLink] PCI-7296 (adl_pci7296)
  26 Author: Jon Grierson <jd@renko.co.uk>
  27 Updated: Mon, 14 Apr 2008 15:05:56 +0100
  28 Status: testing
  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
  40 #include "comedi_pci.h"
  41 #include "8255.h"
  42 /* #include "8253.h" */
  43
  44 #define PORT1A 0
  45 #define PORT2A 4
  46 #define PORT3A 8
  47 #define PORT4A 12
  48
  49 #define PCI_DEVICE_ID_PCI7296 0x7296
  50
  51 static DEFINE_PCI_DEVICE_TABLE(adl_pci7296_pci_table) = {
  52         {PCI_VENDOR_ID_ADLINK, PCI_DEVICE_ID_PCI7296, PCI_ANY_ID, PCI_ANY_ID, 0,
  53                 0, 0},
  54         {0}
  55 };
  56
  57 MODULE_DEVICE_TABLE(pci, adl_pci7296_pci_table);
  58
  59 struct adl_pci7296_private {
  60         int data;
  61         struct pci_dev *pci_dev;
  62 };
  63
  64
  65 #define devpriv ((struct adl_pci7296_private *)dev->private)
  66
  67 static int adl_pci7296_attach(struct comedi_device *dev, struct comedi_devconfig *it);
  68 static int adl_pci7296_detach(struct comedi_device *dev);
  69 static struct comedi_driver driver_adl_pci7296 = {
  70       driver_name:"adl_pci7296",
  71       module:THIS_MODULE,
  72       attach:adl_pci7296_attach,
  73       detach:adl_pci7296_detach,
  74 };
  75
  76 static int adl_pci7296_attach(struct comedi_device *dev, struct comedi_devconfig *it)
  77 {
  78         struct pci_dev *pcidev;
  79         struct comedi_subdevice *s;
  80         int bus, slot;
  81         int ret;
  82
  83         printk("comedi: attempt to attach...\n");
  84         printk("comedi%d: adl_pci7432\n", dev->minor);
  85
  86         dev->board_name = "pci7432";
  87         bus = it->options[0];
  88         slot = it->options[1];
  89
  90         if (alloc_private(dev, sizeof(struct adl_pci7296_private)) < 0)
  91                 return -ENOMEM;
  92
  93         if (alloc_subdevices(dev, 4) < 0)
  94                 return -ENOMEM;
  95
  96         for (pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL);
  97                 pcidev != NULL;
  98                 pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pcidev)) {
  99
 100                 if (pcidev->vendor == PCI_VENDOR_ID_ADLINK &&
 101                         pcidev->device == PCI_DEVICE_ID_PCI7296) {
 102                         if (bus || slot) {
 103                                 /* requested particular bus/slot */
 104                                 if (pcidev->bus->number != bus
 105                                         || PCI_SLOT(pcidev->devfn) != slot) {
 106                                         continue;
 107                                 }
 108                         }
 109                         devpriv->pci_dev = pcidev;
 110                         if (comedi_pci_enable(pcidev, "adl_pci7296") < 0) {
 111                                 printk("comedi%d: Failed to enable PCI device and request regions\n", dev->minor);
 112                                 return -EIO;
 113                         }
 114
 115                         dev->iobase = pci_resource_start(pcidev, 2);
 116                         printk("comedi: base addr %4lx\n", dev->iobase);
 117
 118                         /*  four 8255 digital io subdevices */
 119                         s = dev->subdevices + 0;
 120                         subdev_8255_init(dev, s, NULL,
 121                                 (unsigned long)(dev->iobase));
 122
 123                         s = dev->subdevices + 1;
 124                         ret = subdev_8255_init(dev, s, NULL,
 125                                 (unsigned long)(dev->iobase + PORT2A));
 126                         if (ret < 0)
 127                                 return ret;
 128
 129                         s = dev->subdevices + 2;
 130                         ret = subdev_8255_init(dev, s, NULL,
 131                                 (unsigned long)(dev->iobase + PORT3A));
 132                         if (ret < 0)
 133                                 return ret;
 134
 135                         s = dev->subdevices + 3;
 136                         ret = subdev_8255_init(dev, s, NULL,
 137                                 (unsigned long)(dev->iobase + PORT4A));
 138                         if (ret < 0)
 139                                 return ret;
 140
 141                         printk("attached\n");
 142
 143                         return 1;
 144                 }
 145         }
 146
 147         printk("comedi%d: no supported board found! (req. bus/slot : %d/%d)\n",
 148                 dev->minor, bus, slot);
 149         return -EIO;
 150 }
 151
 152 static int adl_pci7296_detach(struct comedi_device *dev)
 153 {
 154         printk("comedi%d: pci7432: remove\n", dev->minor);
 155
 156         if (devpriv && devpriv->pci_dev) {
 157                 if (dev->iobase) {
 158                         comedi_pci_disable(devpriv->pci_dev);
 159                 }
 160                 pci_dev_put(devpriv->pci_dev);
 161         }
 162         /*  detach four 8255 digital io subdevices */
 163         if (dev->subdevices) {
 164                 subdev_8255_cleanup(dev, dev->subdevices + 0);
 165                 subdev_8255_cleanup(dev, dev->subdevices + 1);
 166                 subdev_8255_cleanup(dev, dev->subdevices + 2);
 167                 subdev_8255_cleanup(dev, dev->subdevices + 3);
 168
 169         }
 170
 171         return 0;
 172 }
 173
 174 COMEDI_PCI_INITCLEANUP(driver_adl_pci7296, adl_pci7296_pci_table);