--- /dev/null
+/*
+ * 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.
+ */
+
+/*
+ * 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: not applicable, uses PCI auto config
+ */
+
+#include <linux/module.h>
+
+#include "../comedi_pci.h"
+
+/*
+ * PCI BAR 0 Register I/O map
+ */
+#define KE_RESET_REG(x) (0x00 + ((x) * 0x20))
+#define KE_LATCH_REG(x) (0x00 + ((x) * 0x20))
+#define KE_LSB_REG(x) (0x04 + ((x) * 0x20))
+#define KE_MID_REG(x) (0x08 + ((x) * 0x20))
+#define KE_MSB_REG(x) (0x0c + ((x) * 0x20))
+#define KE_SIGN_REG(x) (0x10 + ((x) * 0x20))
+#define KE_OSC_SEL_REG 0xf8
+#define KE_OSC_SEL_EXT (1 << 0)
+#define KE_OSC_SEL_4MHZ (2 << 0)
+#define KE_OSC_SEL_20MHZ (3 << 0)
+#define KE_DO_REG 0xfc
+
+static int ke_counter_insn_write(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ unsigned int chan = CR_CHAN(insn->chanspec);
+ unsigned int val;
+ int i;
+
+ for (i = 0; i < insn->n; i++) {
+ val = data[0];
+
+ /* Order matters */
+ outb((val >> 24) & 0xff, dev->iobase + KE_SIGN_REG(chan));
+ outb((val >> 16) & 0xff, dev->iobase + KE_MSB_REG(chan));
+ outb((val >> 8) & 0xff, dev->iobase + KE_MID_REG(chan));
+ outb((val >> 0) & 0xff, dev->iobase + KE_LSB_REG(chan));
+ }
+
+ return insn->n;
+}
+
+static int ke_counter_insn_read(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ unsigned int chan = CR_CHAN(insn->chanspec);
+ unsigned int val;
+ int i;
+
+ for (i = 0; i < insn->n; i++) {
+ /* Order matters */
+ inb(dev->iobase + KE_LATCH_REG(chan));
+
+ val = inb(dev->iobase + KE_LSB_REG(chan));
+ val |= (inb(dev->iobase + KE_MID_REG(chan)) << 8);
+ val |= (inb(dev->iobase + KE_MSB_REG(chan)) << 16);
+ val |= (inb(dev->iobase + KE_SIGN_REG(chan)) << 24);
+
+ data[i] = val;
+ }
+
+ return insn->n;
+}
+
+static void ke_counter_reset(struct comedi_device *dev)
+{
+ unsigned int chan;
+
+ for (chan = 0; chan < 3; chan++)
+ outb(0, dev->iobase + KE_RESET_REG(chan));
+}
+
+static int ke_counter_insn_config(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ unsigned char src;
+
+ switch (data[0]) {
+ case INSN_CONFIG_SET_CLOCK_SRC:
+ switch (data[1]) {
+ case KE_CLK_20MHZ: /* default */
+ src = KE_OSC_SEL_20MHZ;
+ break;
+ case KE_CLK_4MHZ: /* option */
+ src = KE_OSC_SEL_4MHZ;
+ break;
+ case KE_CLK_EXT: /* Pin 21 on D-sub */
+ src = KE_OSC_SEL_EXT;
+ break;
+ default:
+ return -EINVAL;
+ }
+ outb(src, dev->iobase + KE_OSC_SEL_REG);
+ break;
+ case INSN_CONFIG_GET_CLOCK_SRC:
+ src = inb(dev->iobase + KE_OSC_SEL_REG);
+ switch (src) {
+ case KE_OSC_SEL_20MHZ:
+ data[1] = KE_CLK_20MHZ;
+ data[2] = 50; /* 50ns */
+ break;
+ case KE_OSC_SEL_4MHZ:
+ data[1] = KE_CLK_4MHZ;
+ data[2] = 250; /* 250ns */
+ break;
+ case KE_OSC_SEL_EXT:
+ data[1] = KE_CLK_EXT;
+ data[2] = 0; /* Unknown */
+ break;
+ default:
+ return -EINVAL;
+ }
+ break;
+ case INSN_CONFIG_RESET:
+ ke_counter_reset(dev);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return insn->n;
+}
+
+static int ke_counter_do_insn_bits(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ if (comedi_dio_update_state(s, data))
+ outb(s->state, dev->iobase + KE_DO_REG);
+
+ data[1] = s->state;
+
+ return insn->n;
+}
+
+static int ke_counter_auto_attach(struct comedi_device *dev,
+ unsigned long context_unused)
+{
+ struct pci_dev *pcidev = comedi_to_pci_dev(dev);
+ struct comedi_subdevice *s;
+ int ret;
+
+ ret = comedi_pci_enable(dev);
+ if (ret)
+ return ret;
+ dev->iobase = pci_resource_start(pcidev, 0);
+
+ ret = comedi_alloc_subdevices(dev, 2);
+ if (ret)
+ return ret;
+
+ s = &dev->subdevices[0];
+ s->type = COMEDI_SUBD_COUNTER;
+ s->subdev_flags = SDF_READABLE;
+ s->n_chan = 3;
+ s->maxdata = 0x01ffffff;
+ s->range_table = &range_unknown;
+ s->insn_read = ke_counter_insn_read;
+ s->insn_write = ke_counter_insn_write;
+ s->insn_config = ke_counter_insn_config;
+
+ s = &dev->subdevices[1];
+ s->type = COMEDI_SUBD_DO;
+ s->subdev_flags = SDF_WRITABLE;
+ s->n_chan = 3;
+ s->maxdata = 1;
+ s->range_table = &range_digital;
+ s->insn_bits = ke_counter_do_insn_bits;
+
+ outb(KE_OSC_SEL_20MHZ, dev->iobase + KE_OSC_SEL_REG);
+
+ ke_counter_reset(dev);
+
+ return 0;
+}
+
+static struct comedi_driver ke_counter_driver = {
+ .driver_name = "ke_counter",
+ .module = THIS_MODULE,
+ .auto_attach = ke_counter_auto_attach,
+ .detach = comedi_pci_detach,
+};
+
+static int ke_counter_pci_probe(struct pci_dev *dev,
+ const struct pci_device_id *id)
+{
+ return comedi_pci_auto_config(dev, &ke_counter_driver,
+ id->driver_data);
+}
+
+static const struct pci_device_id ke_counter_pci_table[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_KOLTER, 0x0014) },
+ { 0 }
+};
+MODULE_DEVICE_TABLE(pci, ke_counter_pci_table);
+
+static struct pci_driver ke_counter_pci_driver = {
+ .name = "ke_counter",
+ .id_table = ke_counter_pci_table,
+ .probe = ke_counter_pci_probe,
+ .remove = comedi_pci_auto_unconfig,
+};
+module_comedi_pci_driver(ke_counter_driver, ke_counter_pci_driver);
+
+MODULE_AUTHOR("Comedi http://www.comedi.org");
+MODULE_DESCRIPTION("Comedi driver for Kolter Electronic Counter Card");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff