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         {PCI_VENDOR_ID_ADLINK, PCI_DEVICE_ID_PCI7432, PCI_ANY_ID, PCI_ANY_ID, 0,
  48                 0, 0},
  49         {0}
  50 };
  51
  52 MODULE_DEVICE_TABLE(pci, adl_pci7432_pci_table);
  53
  54 typedef struct {
  55         int data;
  56         struct pci_dev *pci_dev;
  57 } adl_pci7432_private;
  58
  59 #define devpriv ((adl_pci7432_private *)dev->private)
  60
  61 static int adl_pci7432_attach(struct comedi_device * dev, comedi_devconfig * it);
  62 static int adl_pci7432_detach(struct comedi_device * dev);
  63 static struct comedi_driver driver_adl_pci7432 = {
  64       driver_name:"adl_pci7432",
  65       module:THIS_MODULE,
  66       attach:adl_pci7432_attach,
  67       detach:adl_pci7432_detach,
  68 };
  69
  70 /* Digital IO */
  71
  72 static int adl_pci7432_di_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s,
  73         comedi_insn * insn, unsigned int * data);
  74
  75 static int adl_pci7432_do_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s,
  76         comedi_insn * insn, unsigned int * data);
  77
  78 /*            */
  79
  80 static int adl_pci7432_attach(struct comedi_device * dev, comedi_devconfig * it)
  81 {
  82         struct pci_dev *pcidev;
  83         struct comedi_subdevice *s;
  84         int bus, slot;
  85
  86         printk("comedi: attempt to attach...\n");
  87         printk("comedi%d: adl_pci7432\n", dev->minor);
  88
  89         dev->board_name = "pci7432";
  90         bus = it->options[0];
  91         slot = it->options[1];
  92
  93         if (alloc_private(dev, sizeof(adl_pci7432_private)) < 0)
  94                 return -ENOMEM;
  95
  96         if (alloc_subdevices(dev, 2) < 0)
  97                 return -ENOMEM;
  98
  99         for (pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL);
 100                 pcidev != NULL;
 101                 pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pcidev)) {
 102
 103                 if (pcidev->vendor == PCI_VENDOR_ID_ADLINK &&
 104                         pcidev->device == PCI_DEVICE_ID_PCI7432) {
 105                         if (bus || slot) {
 106                                 /* requested particular bus/slot */
 107                                 if (pcidev->bus->number != bus
 108                                         || PCI_SLOT(pcidev->devfn) != slot) {
 109                                         continue;
 110                                 }
 111                         }
 112                         devpriv->pci_dev = pcidev;
 113                         if (comedi_pci_enable(pcidev, "adl_pci7432") < 0) {
 114                                 printk("comedi%d: Failed to enable PCI device and request regions\n", dev->minor);
 115                                 return -EIO;
 116                         }
 117                         dev->iobase = pci_resource_start(pcidev, 2);
 118                         printk("comedi: base addr %4lx\n", dev->iobase);
 119
 120                         s = dev->subdevices + 0;
 121                         s->type = COMEDI_SUBD_DI;
 122                         s->subdev_flags =
 123                                 SDF_READABLE | SDF_GROUND | SDF_COMMON;
 124                         s->n_chan = 32;
 125                         s->maxdata = 1;
 126                         s->len_chanlist = 32;
 127                         s->io_bits = 0x00000000;
 128                         s->range_table = &range_digital;
 129                         s->insn_bits = adl_pci7432_di_insn_bits;
 130
 131                         s = dev->subdevices + 1;
 132                         s->type = COMEDI_SUBD_DO;
 133                         s->subdev_flags =
 134                                 SDF_WRITABLE | SDF_GROUND | SDF_COMMON;
 135                         s->n_chan = 32;
 136                         s->maxdata = 1;
 137                         s->len_chanlist = 32;
 138                         s->io_bits = 0xffffffff;
 139                         s->range_table = &range_digital;
 140                         s->insn_bits = adl_pci7432_do_insn_bits;
 141
 142                         printk("comedi: attached\n");
 143
 144                         return 1;
 145                 }
 146         }
 147
 148         printk("comedi%d: no supported board found! (req. bus/slot : %d/%d)\n",
 149                 dev->minor, bus, slot);
 150         return -EIO;
 151 }
 152
 153 static int adl_pci7432_detach(struct comedi_device * dev)
 154 {
 155         printk("comedi%d: pci7432: remove\n", dev->minor);
 156
 157         if (devpriv && devpriv->pci_dev) {
 158                 if (dev->iobase) {
 159                         comedi_pci_disable(devpriv->pci_dev);
 160                 }
 161                 pci_dev_put(devpriv->pci_dev);
 162         }
 163
 164         return 0;
 165 }
 166
 167 static int adl_pci7432_do_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s,
 168         comedi_insn * insn, unsigned int * data)
 169 {
 170         printk("comedi: pci7432_do_insn_bits called\n");
 171         printk("comedi: data0: %8x data1: %8x\n", data[0], data[1]);
 172
 173         if (insn->n != 2)
 174                 return -EINVAL;
 175
 176         if (data[0]) {
 177                 s->state &= ~data[0];
 178                 s->state |= (data[0] & data[1]);
 179
 180                 printk("comedi: out: %8x on iobase %4lx\n", s->state,
 181                         dev->iobase + PCI7432_DO);
 182                 outl(s->state & 0xffffffff, dev->iobase + PCI7432_DO);
 183         }
 184         return 2;
 185 }
 186
 187 static int adl_pci7432_di_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s,
 188         comedi_insn * insn, unsigned int * data)
 189 {
 190         printk("comedi: pci7432_di_insn_bits called\n");
 191         printk("comedi: data0: %8x data1: %8x\n", data[0], data[1]);
 192
 193         if (insn->n != 2)
 194                 return -EINVAL;
 195
 196         data[1] = inl(dev->iobase + PCI7432_DI) & 0xffffffff;
 197         printk("comedi: data1 %8x\n", data[1]);
 198
 199         return 2;
 200 }
 201
 202 COMEDI_PCI_INITCLEANUP(driver_adl_pci7432, adl_pci7432_pci_table);