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 #define cnt_board_nbr (sizeof(cnt_boards)/sizeof(struct cnt_board_struct))
67 /*-- device private structure -----------------------------------------------*/
69 struct cnt_device_private {
71 struct pci_dev *pcidev;
74 #define devpriv ((struct cnt_device_private *)dev->private)
76 /*-- counter write ----------------------------------------------------------*/
78 /* This should be used only for resetting the counters; maybe it is better
79 to make a special command 'reset'. */
80 static int cnt_winsn(struct comedi_device *dev,
81 struct comedi_subdevice *s, struct comedi_insn *insn,
84 int chan = CR_CHAN(insn->chanspec);
86 outb((unsigned char)((data[0] >> 24) & 0xff),
87 dev->iobase + chan * 0x20 + 0x10);
88 outb((unsigned char)((data[0] >> 16) & 0xff),
89 dev->iobase + chan * 0x20 + 0x0c);
90 outb((unsigned char)((data[0] >> 8) & 0xff),
91 dev->iobase + chan * 0x20 + 0x08);
92 outb((unsigned char)((data[0] >> 0) & 0xff),
93 dev->iobase + chan * 0x20 + 0x04);
95 /* return the number of samples written */
99 /*-- counter read -----------------------------------------------------------*/
101 static int cnt_rinsn(struct comedi_device *dev,
102 struct comedi_subdevice *s, struct comedi_insn *insn,
105 unsigned char a0, a1, a2, a3, a4;
106 int chan = CR_CHAN(insn->chanspec);
109 a0 = inb(dev->iobase + chan * 0x20);
110 a1 = inb(dev->iobase + chan * 0x20 + 0x04);
111 a2 = inb(dev->iobase + chan * 0x20 + 0x08);
112 a3 = inb(dev->iobase + chan * 0x20 + 0x0c);
113 a4 = inb(dev->iobase + chan * 0x20 + 0x10);
115 result = (a1 + (a2 * 256) + (a3 * 65536));
117 result = result - s->maxdata;
119 *data = (unsigned int)result;
121 /* return the number of samples read */
125 static struct pci_dev *cnt_find_pci_dev(struct comedi_device *dev,
126 struct comedi_devconfig *it)
128 const struct cnt_board_struct *board;
129 struct pci_dev *pcidev = NULL;
130 int bus = it->options[0];
131 int slot = it->options[1];
134 /* Probe the device to determine what device in the series it is. */
135 for_each_pci_dev(pcidev) {
137 if (pcidev->bus->number != bus ||
138 PCI_SLOT(pcidev->devfn) != slot)
141 if (pcidev->vendor != PCI_VENDOR_ID_KOLTER)
144 for (i = 0; i < cnt_board_nbr; i++) {
145 board = &cnt_boards[i];
146 if (board->device_id != pcidev->device)
149 dev->board_ptr = board;
153 dev_err(dev->class_dev,
154 "No supported board found! (req. bus %d, slot %d)\n",
159 static int cnt_attach(struct comedi_device *dev, struct comedi_devconfig *it)
161 const struct cnt_board_struct *board;
162 struct pci_dev *pcidev;
163 struct comedi_subdevice *subdevice;
164 unsigned long io_base;
167 /* allocate device private structure */
168 error = alloc_private(dev, sizeof(struct cnt_device_private));
172 pcidev = cnt_find_pci_dev(dev, it);
175 devpriv->pcidev = pcidev;
176 board = comedi_board(dev);
178 dev->board_name = board->name;
180 /* enable PCI device and request regions */
181 error = comedi_pci_enable(pcidev, CNT_DRIVER_NAME);
183 printk(KERN_WARNING "comedi%d: "
184 "failed to enable PCI device and request regions!\n",
189 /* read register base address [PCI_BASE_ADDRESS #0] */
190 io_base = pci_resource_start(pcidev, 0);
191 dev->iobase = io_base;
193 error = comedi_alloc_subdevices(dev, 1);
197 subdevice = dev->subdevices + 0;
198 dev->read_subdev = subdevice;
200 subdevice->type = COMEDI_SUBD_COUNTER;
201 subdevice->subdev_flags = SDF_READABLE /* | SDF_COMMON */ ;
202 subdevice->n_chan = board->cnt_channel_nbr;
203 subdevice->maxdata = (1 << board->cnt_bits) - 1;
204 subdevice->insn_read = cnt_rinsn;
205 subdevice->insn_write = cnt_winsn;
207 /* select 20MHz clock */
208 outb(3, dev->iobase + 248);
210 /* reset all counters */
211 outb(0, dev->iobase);
212 outb(0, dev->iobase + 0x20);
213 outb(0, dev->iobase + 0x40);
215 printk(KERN_INFO "comedi%d: " CNT_DRIVER_NAME " attached.\n",
220 static void cnt_detach(struct comedi_device *dev)
222 if (devpriv && devpriv->pcidev) {
224 comedi_pci_disable(devpriv->pcidev);
225 pci_dev_put(devpriv->pcidev);
229 static struct comedi_driver ke_counter_driver = {
230 .driver_name = "ke_counter",
231 .module = THIS_MODULE,
232 .attach = cnt_attach,
233 .detach = cnt_detach,
236 static int __devinit ke_counter_pci_probe(struct pci_dev *dev,
237 const struct pci_device_id *ent)
239 return comedi_pci_auto_config(dev, &ke_counter_driver);
242 static void __devexit ke_counter_pci_remove(struct pci_dev *dev)
244 comedi_pci_auto_unconfig(dev);
247 static DEFINE_PCI_DEVICE_TABLE(ke_counter_pci_table) = {
248 { PCI_DEVICE(PCI_VENDOR_ID_KOLTER, CNT_CARD_DEVICE_ID) },
251 MODULE_DEVICE_TABLE(pci, ke_counter_pci_table);
253 static struct pci_driver ke_counter_pci_driver = {
254 .name = "ke_counter",
255 .id_table = ke_counter_pci_table,
256 .probe = ke_counter_pci_probe,
257 .remove = __devexit_p(ke_counter_pci_remove),
259 module_comedi_pci_driver(ke_counter_driver, ke_counter_pci_driver);
261 MODULE_AUTHOR("Comedi http://www.comedi.org");
262 MODULE_DESCRIPTION("Comedi low-level driver");
263 MODULE_LICENSE("GPL");