2 comedi/drivers/ke_counter.c
3 Comedi driver for Kolter-Electronic PCI Counter 1 Card
5 COMEDI - Linux Control and Measurement Device Interface
6 Copyright (C) 2000 David A. Schleef <ds@schleef.org>
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 Description: Driver for Kolter Electronic Counter Card
26 Devices: [Kolter Electronic] PCI Counter Card (ke_counter)
27 Author: Michael Hillmann
28 Updated: Mon, 14 Apr 2008 15:42:42 +0100
31 Configuration Options:
32 [0] - PCI bus of device (optional)
33 [1] - PCI slot of device (optional)
34 If bus/slot is not specified, the first supported
35 PCI device found will be used.
37 This driver is a simple driver to read the counter values from
38 Kolter Electronic PCI Counter Card.
41 #include "../comedidev.h"
43 #define CNT_DRIVER_NAME "ke_counter"
44 #define PCI_VENDOR_ID_KOLTER 0x1001
45 #define CNT_CARD_DEVICE_ID 0x0014
47 /*-- board specification structure ------------------------------------------*/
49 struct cnt_board_struct {
57 static const struct cnt_board_struct cnt_boards[] = {
59 .name = CNT_DRIVER_NAME,
60 .device_id = CNT_CARD_DEVICE_ID,
65 /*-- counter write ----------------------------------------------------------*/
67 /* This should be used only for resetting the counters; maybe it is better
68 to make a special command 'reset'. */
69 static int cnt_winsn(struct comedi_device *dev,
70 struct comedi_subdevice *s, struct comedi_insn *insn,
73 int chan = CR_CHAN(insn->chanspec);
75 outb((unsigned char)((data[0] >> 24) & 0xff),
76 dev->iobase + chan * 0x20 + 0x10);
77 outb((unsigned char)((data[0] >> 16) & 0xff),
78 dev->iobase + chan * 0x20 + 0x0c);
79 outb((unsigned char)((data[0] >> 8) & 0xff),
80 dev->iobase + chan * 0x20 + 0x08);
81 outb((unsigned char)((data[0] >> 0) & 0xff),
82 dev->iobase + chan * 0x20 + 0x04);
84 /* return the number of samples written */
88 /*-- counter read -----------------------------------------------------------*/
90 static int cnt_rinsn(struct comedi_device *dev,
91 struct comedi_subdevice *s, struct comedi_insn *insn,
94 unsigned char a0, a1, a2, a3, a4;
95 int chan = CR_CHAN(insn->chanspec);
98 a0 = inb(dev->iobase + chan * 0x20);
99 a1 = inb(dev->iobase + chan * 0x20 + 0x04);
100 a2 = inb(dev->iobase + chan * 0x20 + 0x08);
101 a3 = inb(dev->iobase + chan * 0x20 + 0x0c);
102 a4 = inb(dev->iobase + chan * 0x20 + 0x10);
104 result = (a1 + (a2 * 256) + (a3 * 65536));
106 result = result - s->maxdata;
108 *data = (unsigned int)result;
110 /* return the number of samples read */
114 static struct pci_dev *cnt_find_pci_dev(struct comedi_device *dev,
115 struct comedi_devconfig *it)
117 const struct cnt_board_struct *board;
118 struct pci_dev *pcidev = NULL;
119 int bus = it->options[0];
120 int slot = it->options[1];
123 /* Probe the device to determine what device in the series it is. */
124 for_each_pci_dev(pcidev) {
126 if (pcidev->bus->number != bus ||
127 PCI_SLOT(pcidev->devfn) != slot)
130 if (pcidev->vendor != PCI_VENDOR_ID_KOLTER)
133 for (i = 0; i < ARRAY_SIZE(cnt_boards); i++) {
134 board = &cnt_boards[i];
135 if (board->device_id != pcidev->device)
138 dev->board_ptr = board;
142 dev_err(dev->class_dev,
143 "No supported board found! (req. bus %d, slot %d)\n",
148 static int cnt_attach(struct comedi_device *dev, struct comedi_devconfig *it)
150 const struct cnt_board_struct *board;
151 struct pci_dev *pcidev;
152 struct comedi_subdevice *subdevice;
153 unsigned long io_base;
156 pcidev = cnt_find_pci_dev(dev, it);
159 comedi_set_hw_dev(dev, &pcidev->dev);
160 board = comedi_board(dev);
162 dev->board_name = board->name;
164 /* enable PCI device and request regions */
165 error = comedi_pci_enable(pcidev, CNT_DRIVER_NAME);
167 printk(KERN_WARNING "comedi%d: "
168 "failed to enable PCI device and request regions!\n",
173 /* read register base address [PCI_BASE_ADDRESS #0] */
174 io_base = pci_resource_start(pcidev, 0);
175 dev->iobase = io_base;
177 error = comedi_alloc_subdevices(dev, 1);
181 subdevice = dev->subdevices + 0;
182 dev->read_subdev = subdevice;
184 subdevice->type = COMEDI_SUBD_COUNTER;
185 subdevice->subdev_flags = SDF_READABLE /* | SDF_COMMON */ ;
186 subdevice->n_chan = board->cnt_channel_nbr;
187 subdevice->maxdata = (1 << board->cnt_bits) - 1;
188 subdevice->insn_read = cnt_rinsn;
189 subdevice->insn_write = cnt_winsn;
191 /* select 20MHz clock */
192 outb(3, dev->iobase + 248);
194 /* reset all counters */
195 outb(0, dev->iobase);
196 outb(0, dev->iobase + 0x20);
197 outb(0, dev->iobase + 0x40);
199 printk(KERN_INFO "comedi%d: " CNT_DRIVER_NAME " attached.\n",
204 static void cnt_detach(struct comedi_device *dev)
206 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
210 comedi_pci_disable(pcidev);
215 static struct comedi_driver ke_counter_driver = {
216 .driver_name = "ke_counter",
217 .module = THIS_MODULE,
218 .attach = cnt_attach,
219 .detach = cnt_detach,
222 static int __devinit ke_counter_pci_probe(struct pci_dev *dev,
223 const struct pci_device_id *ent)
225 return comedi_pci_auto_config(dev, &ke_counter_driver);
228 static void __devexit ke_counter_pci_remove(struct pci_dev *dev)
230 comedi_pci_auto_unconfig(dev);
233 static DEFINE_PCI_DEVICE_TABLE(ke_counter_pci_table) = {
234 { PCI_DEVICE(PCI_VENDOR_ID_KOLTER, CNT_CARD_DEVICE_ID) },
237 MODULE_DEVICE_TABLE(pci, ke_counter_pci_table);
239 static struct pci_driver ke_counter_pci_driver = {
240 .name = "ke_counter",
241 .id_table = ke_counter_pci_table,
242 .probe = ke_counter_pci_probe,
243 .remove = __devexit_p(ke_counter_pci_remove),
245 module_comedi_pci_driver(ke_counter_driver, ke_counter_pci_driver);
247 MODULE_AUTHOR("Comedi http://www.comedi.org");
248 MODULE_DESCRIPTION("Comedi low-level driver");
249 MODULE_LICENSE("GPL");