--- /dev/null
+/*
+ comedi/drivers/ke_counter.c
+ Comedi driver for Kolter-Electronic PCI Counter 1 Card
+
+ COMEDI - Linux Control and Measurement Device Interface
+ Copyright (C) 2000 David A. Schleef <ds@schleef.org>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+/*
+Driver: ke_counter
+Description: Driver for Kolter Electronic Counter Card
+Devices: [Kolter Electronic] PCI Counter Card (ke_counter)
+Author: Michael Hillmann
+Updated: Mon, 14 Apr 2008 15:42:42 +0100
+Status: tested
+
+Configuration Options:
+ [0] - PCI bus of device (optional)
+ [1] - PCI slot of device (optional)
+ If bus/slot is not specified, the first supported
+ PCI device found will be used.
+
+This driver is a simple driver to read the counter values from
+Kolter Electronic PCI Counter Card.
+*/
+
+#include "../comedidev.h"
+
+#include "comedi_pci.h"
+
+#define CNT_DRIVER_NAME "ke_counter"
+#define PCI_VENDOR_ID_KOLTER 0x1001
+#define CNT_CARD_DEVICE_ID 0x0014
+
+/*-- function prototypes ----------------------------------------------------*/
+
+static int cnt_attach(struct comedi_device * dev, struct comedi_devconfig * it);
+static int cnt_detach(struct comedi_device * dev);
+
+static DEFINE_PCI_DEVICE_TABLE(cnt_pci_table) = {
+ {PCI_VENDOR_ID_KOLTER, CNT_CARD_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ 0},
+ {0}
+};
+
+MODULE_DEVICE_TABLE(pci, cnt_pci_table);
+
+/*-- board specification structure ------------------------------------------*/
+
+struct cnt_board_struct {
+
+ const char *name;
+ int device_id;
+ int cnt_channel_nbr;
+ int cnt_bits;
+};
+
+
+static const struct cnt_board_struct cnt_boards[] = {
+ {
+ name: CNT_DRIVER_NAME,
+ device_id:CNT_CARD_DEVICE_ID,
+ cnt_channel_nbr:3,
+ cnt_bits:24}
+};
+
+#define cnt_board_nbr (sizeof(cnt_boards)/sizeof(struct cnt_board_struct))
+
+/*-- device private structure -----------------------------------------------*/
+
+struct cnt_device_private {
+
+ struct pci_dev *pcidev;
+};
+
+
+#define devpriv ((struct cnt_device_private *)dev->private)
+
+static struct comedi_driver cnt_driver = {
+ driver_name:CNT_DRIVER_NAME,
+ module:THIS_MODULE,
+ attach:cnt_attach,
+ detach:cnt_detach,
+};
+
+COMEDI_PCI_INITCLEANUP(cnt_driver, cnt_pci_table);
+
+/*-- counter write ----------------------------------------------------------*/
+
+/* This should be used only for resetting the counters; maybe it is better
+ to make a special command 'reset'. */
+static int cnt_winsn(struct comedi_device * dev,
+ struct comedi_subdevice * s, struct comedi_insn * insn, unsigned int * data)
+{
+ int chan = CR_CHAN(insn->chanspec);
+
+ outb((unsigned char)((data[0] >> 24) & 0xff),
+ dev->iobase + chan * 0x20 + 0x10);
+ outb((unsigned char)((data[0] >> 16) & 0xff),
+ dev->iobase + chan * 0x20 + 0x0c);
+ outb((unsigned char)((data[0] >> 8) & 0xff),
+ dev->iobase + chan * 0x20 + 0x08);
+ outb((unsigned char)((data[0] >> 0) & 0xff),
+ dev->iobase + chan * 0x20 + 0x04);
+
+ /* return the number of samples written */
+ return 1;
+}
+
+/*-- counter read -----------------------------------------------------------*/
+
+static int cnt_rinsn(struct comedi_device * dev,
+ struct comedi_subdevice * s, struct comedi_insn * insn, unsigned int * data)
+{
+ unsigned char a0, a1, a2, a3, a4;
+ int chan = CR_CHAN(insn->chanspec);
+ int result;
+
+ a0 = inb(dev->iobase + chan * 0x20);
+ a1 = inb(dev->iobase + chan * 0x20 + 0x04);
+ a2 = inb(dev->iobase + chan * 0x20 + 0x08);
+ a3 = inb(dev->iobase + chan * 0x20 + 0x0c);
+ a4 = inb(dev->iobase + chan * 0x20 + 0x10);
+
+ result = (a1 + (a2 * 256) + (a3 * 65536));
+ if (a4 > 0)
+ result = result - s->maxdata;
+
+ *data = (unsigned int) result;
+
+ /* return the number of samples read */
+ return 1;
+}
+
+/*-- attach -----------------------------------------------------------------*/
+
+static int cnt_attach(struct comedi_device * dev, struct comedi_devconfig * it)
+{
+ struct comedi_subdevice *subdevice;
+ struct pci_dev *pci_device;
+ struct cnt_board_struct *board;
+ unsigned long io_base;
+ int error, i;
+
+ /* allocate device private structure */
+ if ((error = alloc_private(dev, sizeof(struct cnt_device_private))) < 0) {
+ return error;
+ }
+
+ /* Probe the device to determine what device in the series it is. */
+ for (pci_device = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL);
+ pci_device != NULL;
+ pci_device =
+ pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pci_device)) {
+ if (pci_device->vendor == PCI_VENDOR_ID_KOLTER) {
+ for (i = 0; i < cnt_board_nbr; i++) {
+ if (cnt_boards[i].device_id ==
+ pci_device->device) {
+ /* was a particular bus/slot requested? */
+ if ((it->options[0] != 0)
+ || (it->options[1] != 0)) {
+ /* are we on the wrong bus/slot? */
+ if (pci_device->bus->number !=
+ it->options[0]
+ || PCI_SLOT(pci_device->
+ devfn) !=
+ it->options[1]) {
+ continue;
+ }
+ }
+
+ dev->board_ptr = cnt_boards + i;
+ board = (struct cnt_board_struct *) dev->
+ board_ptr;
+ goto found;
+ }
+ }
+ }
+ }
+ printk("comedi%d: no supported board found! (req. bus/slot: %d/%d)\n",
+ dev->minor, it->options[0], it->options[1]);
+ return -EIO;
+
+ found:
+ printk("comedi%d: found %s at PCI bus %d, slot %d\n", dev->minor,
+ board->name, pci_device->bus->number,
+ PCI_SLOT(pci_device->devfn));
+ devpriv->pcidev = pci_device;
+ dev->board_name = board->name;
+
+ /* enable PCI device and request regions */
+ if ((error = comedi_pci_enable(pci_device, CNT_DRIVER_NAME)) < 0) {
+ printk("comedi%d: failed to enable PCI device and request regions!\n", dev->minor);
+ return error;
+ }
+
+ /* read register base address [PCI_BASE_ADDRESS #0] */
+ io_base = pci_resource_start(pci_device, 0);
+ dev->iobase = io_base;
+
+ /* allocate the subdevice structures */
+ if ((error = alloc_subdevices(dev, 1)) < 0) {
+ return error;
+ }
+
+ subdevice = dev->subdevices + 0;
+ dev->read_subdev = subdevice;
+
+ subdevice->type = COMEDI_SUBD_COUNTER;
+ subdevice->subdev_flags = SDF_READABLE /* | SDF_COMMON */ ;
+ subdevice->n_chan = board->cnt_channel_nbr;
+ subdevice->maxdata = (1 << board->cnt_bits) - 1;
+ subdevice->insn_read = cnt_rinsn;
+ subdevice->insn_write = cnt_winsn;
+
+ // select 20MHz clock
+ outb(3, dev->iobase + 248);
+
+ // reset all counters
+ outb(0, dev->iobase);
+ outb(0, dev->iobase + 0x20);
+ outb(0, dev->iobase + 0x40);
+
+ printk("comedi%d: " CNT_DRIVER_NAME " attached.\n", dev->minor);
+ return 0;
+}
+
+/*-- detach -----------------------------------------------------------------*/
+
+static int cnt_detach(struct comedi_device * dev)
+{
+ if (devpriv && devpriv->pcidev) {
+ if (dev->iobase) {
+ comedi_pci_disable(devpriv->pcidev);
+ }
+ pci_dev_put(devpriv->pcidev);
+ }
+ printk("comedi%d: " CNT_DRIVER_NAME " remove\n", dev->minor);
+ return 0;
+}
projects / linux-2.6-omap-h63xx.git / blobdiff