// SPDX-License-Identifier: GPL-2.0+
/*
* 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 <[email protected]>
*/
/*
* 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 <linux/comedi/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_CLK(x) (((x) & 0x3) << 0)
#define KE_OSC_SEL_EXT KE_OSC_SEL_CLK(1)
#define KE_OSC_SEL_4MHZ KE_OSC_SEL_CLK(2)
#define KE_OSC_SEL_20MHZ KE_OSC_SEL_CLK(3)
#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 https://www.comedi.org");
MODULE_DESCRIPTION("Comedi driver for Kolter Electronic Counter Card");
MODULE_LICENSE("GPL");
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