adl_pci7230.c revision c76a326f9256e1779dc676781faf19f3a534c147
1/* 2 comedi/drivers/adl_pci7230.c 3 4 Hardware comedi driver fot PCI7230 Adlink card 5 Copyright (C) 2010 David Fernandez <dfcastelao@gmail.com> 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_pci7230 24Description: Driver for the Adlink PCI-7230 32 ch. isolated digital io board 25Devices: [ADLink] PCI-7230 (adl_pci7230) 26Author: David Fernandez <dfcastelao@gmail.com> 27Status: experimental 28Updated: Mon, 14 Apr 2008 15:08:14 +0100 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#include "comedi_pci.h" 40 41#define PCI7230_DI 0x00 42#define PCI7230_DO 0x00 43 44#define PCI_DEVICE_ID_PCI7230 0x7230 45 46static DEFINE_PCI_DEVICE_TABLE(adl_pci7230_pci_table) = { 47 { 48 PCI_VENDOR_ID_ADLINK, 49 PCI_DEVICE_ID_PCI7230, 50 PCI_ANY_ID, 51 PCI_ANY_ID, 52 0, 53 0, 54 0 55 }, 56 {0} 57}; 58 59MODULE_DEVICE_TABLE(pci, adl_pci7230_pci_table); 60 61struct adl_pci7230_private { 62 int data; 63 struct pci_dev *pci_dev; 64}; 65 66#define devpriv ((struct adl_pci7230_private *)dev->private) 67 68static int adl_pci7230_attach(struct comedi_device *dev, 69 struct comedi_devconfig *it); 70static int adl_pci7230_detach(struct comedi_device *dev); 71static struct comedi_driver driver_adl_pci7230 = { 72 .driver_name = "adl_pci7230", 73 .module = THIS_MODULE, 74 .attach = adl_pci7230_attach, 75 .detach = adl_pci7230_detach, 76}; 77 78/* Digital IO */ 79 80static int adl_pci7230_di_insn_bits(struct comedi_device *dev, 81 struct comedi_subdevice *s, 82 struct comedi_insn *insn, 83 unsigned int *data); 84 85static int adl_pci7230_do_insn_bits(struct comedi_device *dev, 86 struct comedi_subdevice *s, 87 struct comedi_insn *insn, 88 unsigned int *data); 89 90static int adl_pci7230_attach(struct comedi_device *dev, 91 struct comedi_devconfig *it) 92{ 93 struct pci_dev *pcidev; 94 struct comedi_subdevice *s; 95 int bus, slot; 96 97 printk(KERN_INFO "comedi%d: adl_pci7230\n", dev->minor); 98 99 dev->board_name = "pci7230"; 100 bus = it->options[0]; 101 slot = it->options[1]; 102 103 if (alloc_private(dev, sizeof(struct adl_pci7230_private)) < 0) 104 return -ENOMEM; 105 106 if (alloc_subdevices(dev, 2) < 0) 107 return -ENOMEM; 108 109 for (pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL); 110 pcidev != NULL; 111 pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pcidev)) { 112 113 if (pcidev->vendor == PCI_VENDOR_ID_ADLINK && 114 pcidev->device == PCI_DEVICE_ID_PCI7230) { 115 if (bus || slot) { 116 /* requested particular bus/slot */ 117 if (pcidev->bus->number != bus || 118 PCI_SLOT(pcidev->devfn) != slot) { 119 continue; 120 } 121 } 122 devpriv->pci_dev = pcidev; 123 break; 124 } 125 } 126 if (pcidev == NULL) { 127 printk(KERN_ERR "comedi%d: no supported board found! (req. bus/slot : %d/%d)\n", 128 dev->minor, bus, slot); 129 return -EIO; 130 } 131 if (comedi_pci_enable(pcidev, "adl_pci7230") < 0) { 132 printk(KERN_ERR "comedi%d: Failed to enable PCI device and request regions\n", 133 dev->minor); 134 return -EIO; 135 } 136 dev->iobase = pci_resource_start(pcidev, 2); 137 printk(KERN_DEBUG "comedi: base addr %4lx\n", dev->iobase); 138 139 s = dev->subdevices + 0; 140 /* Isolated do */ 141 s->type = COMEDI_SUBD_DO; 142 s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_COMMON; 143 s->n_chan = 16; 144 s->maxdata = 1; 145 s->range_table = &range_digital; 146 s->insn_bits = adl_pci7230_do_insn_bits; 147 148 s = dev->subdevices + 1; 149 /* Isolated di */ 150 s->type = COMEDI_SUBD_DI; 151 s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_COMMON; 152 s->n_chan = 16; 153 s->maxdata = 1; 154 s->range_table = &range_digital; 155 s->insn_bits = adl_pci7230_di_insn_bits; 156 157 printk(KERN_DEBUG "comedi: attached\n"); 158 159 return 1; 160} 161 162static int adl_pci7230_detach(struct comedi_device *dev) 163{ 164 printk(KERN_DEBUG "comedi%d: pci7230: remove\n", dev->minor); 165 166 if (devpriv && devpriv->pci_dev) { 167 if (dev->iobase) 168 comedi_pci_disable(devpriv->pci_dev); 169 pci_dev_put(devpriv->pci_dev); 170 } 171 172 return 0; 173} 174 175static int adl_pci7230_do_insn_bits(struct comedi_device *dev, 176 struct comedi_subdevice *s, 177 struct comedi_insn *insn, 178 unsigned int *data) 179{ 180 if (insn->n != 2) 181 return -EINVAL; 182 183 if (data[0]) { 184 s->state &= ~data[0]; 185 s->state |= (data[0] & data[1]); 186 187 outl((s->state << 16) & 0xffffffff, dev->iobase + PCI7230_DO); 188 } 189 190 return 2; 191} 192 193static int adl_pci7230_di_insn_bits(struct comedi_device *dev, 194 struct comedi_subdevice *s, 195 struct comedi_insn *insn, 196 unsigned int *data) 197{ 198 if (insn->n != 2) 199 return -EINVAL; 200 201 data[1] = inl(dev->iobase + PCI7230_DI) & 0xffffffff; 202 203 return 2; 204} 205 206COMEDI_PCI_INITCLEANUP(driver_adl_pci7230, adl_pci7230_pci_table); 207