adl_pci7296.c revision 1ab1774f12c4157e47e063e9c73fd8a6520afa6d
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/* 23Driver: adl_pci7296 24Description: Driver for the Adlink PCI-7296 96 ch. digital io board 25Devices: [ADLink] PCI-7296 (adl_pci7296) 26Author: Jon Grierson <jd@renko.co.uk> 27Updated: Mon, 14 Apr 2008 15:05:56 +0100 28Status: testing 29 30Configuration 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 51static DEFINE_PCI_DEVICE_TABLE(adl_pci7296_pci_table) = { 52 { 53 PCI_VENDOR_ID_ADLINK, PCI_DEVICE_ID_PCI7296, PCI_ANY_ID, 54 PCI_ANY_ID, 0, 0, 0}, { 55 0} 56}; 57 58MODULE_DEVICE_TABLE(pci, adl_pci7296_pci_table); 59 60struct adl_pci7296_private { 61 int data; 62 struct pci_dev *pci_dev; 63}; 64 65#define devpriv ((struct adl_pci7296_private *)dev->private) 66 67static int adl_pci7296_attach(struct comedi_device *dev, 68 struct comedi_devconfig *it); 69static int adl_pci7296_detach(struct comedi_device *dev); 70static struct comedi_driver driver_adl_pci7296 = { 71 .driver_name = "adl_pci7296", 72 .module = THIS_MODULE, 73 .attach = adl_pci7296_attach, 74 .detach = adl_pci7296_detach, 75}; 76 77static int adl_pci7296_attach(struct comedi_device *dev, 78 struct comedi_devconfig *it) 79{ 80 struct pci_dev *pcidev; 81 struct comedi_subdevice *s; 82 int bus, slot; 83 int ret; 84 85 printk(KERN_INFO "comedi%d: attach adl_pci7432\n", dev->minor); 86 87 dev->board_name = "pci7432"; 88 bus = it->options[0]; 89 slot = it->options[1]; 90 91 if (alloc_private(dev, sizeof(struct adl_pci7296_private)) < 0) 92 return -ENOMEM; 93 94 if (alloc_subdevices(dev, 4) < 0) 95 return -ENOMEM; 96 97 for (pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL); 98 pcidev != NULL; 99 pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pcidev)) { 100 101 if (pcidev->vendor == PCI_VENDOR_ID_ADLINK && 102 pcidev->device == PCI_DEVICE_ID_PCI7296) { 103 if (bus || slot) { 104 /* requested particular bus/slot */ 105 if (pcidev->bus->number != bus 106 || PCI_SLOT(pcidev->devfn) != slot) { 107 continue; 108 } 109 } 110 devpriv->pci_dev = pcidev; 111 if (comedi_pci_enable(pcidev, "adl_pci7296") < 0) { 112 printk(KERN_ERR "comedi%d: Failed to enable PCI device and request regions\n", 113 dev->minor); 114 return -EIO; 115 } 116 117 dev->iobase = pci_resource_start(pcidev, 2); 118 printk(KERN_INFO "comedi: base addr %4lx\n", 119 dev->iobase); 120 121 /* four 8255 digital io subdevices */ 122 s = dev->subdevices + 0; 123 subdev_8255_init(dev, s, NULL, 124 (unsigned long)(dev->iobase)); 125 126 s = dev->subdevices + 1; 127 ret = subdev_8255_init(dev, s, NULL, 128 (unsigned long)(dev->iobase + 129 PORT2A)); 130 if (ret < 0) 131 return ret; 132 133 s = dev->subdevices + 2; 134 ret = subdev_8255_init(dev, s, NULL, 135 (unsigned long)(dev->iobase + 136 PORT3A)); 137 if (ret < 0) 138 return ret; 139 140 s = dev->subdevices + 3; 141 ret = subdev_8255_init(dev, s, NULL, 142 (unsigned long)(dev->iobase + 143 PORT4A)); 144 if (ret < 0) 145 return ret; 146 147 printk(KERN_DEBUG "comedi%d: adl_pci7432 attached\n", 148 dev->minor); 149 150 return 1; 151 } 152 } 153 154 printk(KERN_ERR "comedi%d: no supported board found! (req. bus/slot : %d/%d)\n", 155 dev->minor, bus, slot); 156 return -EIO; 157} 158 159static int adl_pci7296_detach(struct comedi_device *dev) 160{ 161 printk(KERN_INFO "comedi%d: pci7432: remove\n", dev->minor); 162 163 if (devpriv && devpriv->pci_dev) { 164 if (dev->iobase) 165 comedi_pci_disable(devpriv->pci_dev); 166 pci_dev_put(devpriv->pci_dev); 167 } 168 /* detach four 8255 digital io subdevices */ 169 if (dev->subdevices) { 170 subdev_8255_cleanup(dev, dev->subdevices + 0); 171 subdev_8255_cleanup(dev, dev->subdevices + 1); 172 subdev_8255_cleanup(dev, dev->subdevices + 2); 173 subdev_8255_cleanup(dev, dev->subdevices + 3); 174 175 } 176 177 return 0; 178} 179 180COMEDI_PCI_INITCLEANUP(driver_adl_pci7296, adl_pci7296_pci_table); 181