1 // SPDX-License-Identifier: GPL-2.0+
4 * Comedi driver for Kolter-Electronic PCI Counter 1 Card
6 * COMEDI - Linux Control and Measurement Device Interface
7 * Copyright (C) 2000 David A. Schleef <ds@schleef.org>
12 * Description: Driver for Kolter Electronic Counter Card
13 * Devices: [Kolter Electronic] PCI Counter Card (ke_counter)
14 * Author: Michael Hillmann
15 * Updated: Mon, 14 Apr 2008 15:42:42 +0100
18 * Configuration Options: not applicable, uses PCI auto config
21 #include <linux/module.h>
23 #include "../comedi_pci.h"
26 * PCI BAR 0 Register I/O map
28 #define KE_RESET_REG(x) (0x00 + ((x) * 0x20))
29 #define KE_LATCH_REG(x) (0x00 + ((x) * 0x20))
30 #define KE_LSB_REG(x) (0x04 + ((x) * 0x20))
31 #define KE_MID_REG(x) (0x08 + ((x) * 0x20))
32 #define KE_MSB_REG(x) (0x0c + ((x) * 0x20))
33 #define KE_SIGN_REG(x) (0x10 + ((x) * 0x20))
34 #define KE_OSC_SEL_REG 0xf8
35 #define KE_OSC_SEL_CLK(x) (((x) & 0x3) << 0)
36 #define KE_OSC_SEL_EXT KE_OSC_SEL_CLK(1)
37 #define KE_OSC_SEL_4MHZ KE_OSC_SEL_CLK(2)
38 #define KE_OSC_SEL_20MHZ KE_OSC_SEL_CLK(3)
39 #define KE_DO_REG 0xfc
41 static int ke_counter_insn_write(struct comedi_device *dev,
42 struct comedi_subdevice *s,
43 struct comedi_insn *insn,
46 unsigned int chan = CR_CHAN(insn->chanspec);
50 for (i = 0; i < insn->n; i++) {
54 outb((val >> 24) & 0xff, dev->iobase + KE_SIGN_REG(chan));
55 outb((val >> 16) & 0xff, dev->iobase + KE_MSB_REG(chan));
56 outb((val >> 8) & 0xff, dev->iobase + KE_MID_REG(chan));
57 outb((val >> 0) & 0xff, dev->iobase + KE_LSB_REG(chan));
63 static int ke_counter_insn_read(struct comedi_device *dev,
64 struct comedi_subdevice *s,
65 struct comedi_insn *insn,
68 unsigned int chan = CR_CHAN(insn->chanspec);
72 for (i = 0; i < insn->n; i++) {
74 inb(dev->iobase + KE_LATCH_REG(chan));
76 val = inb(dev->iobase + KE_LSB_REG(chan));
77 val |= (inb(dev->iobase + KE_MID_REG(chan)) << 8);
78 val |= (inb(dev->iobase + KE_MSB_REG(chan)) << 16);
79 val |= (inb(dev->iobase + KE_SIGN_REG(chan)) << 24);
87 static void ke_counter_reset(struct comedi_device *dev)
91 for (chan = 0; chan < 3; chan++)
92 outb(0, dev->iobase + KE_RESET_REG(chan));
95 static int ke_counter_insn_config(struct comedi_device *dev,
96 struct comedi_subdevice *s,
97 struct comedi_insn *insn,
103 case INSN_CONFIG_SET_CLOCK_SRC:
105 case KE_CLK_20MHZ: /* default */
106 src = KE_OSC_SEL_20MHZ;
108 case KE_CLK_4MHZ: /* option */
109 src = KE_OSC_SEL_4MHZ;
111 case KE_CLK_EXT: /* Pin 21 on D-sub */
112 src = KE_OSC_SEL_EXT;
117 outb(src, dev->iobase + KE_OSC_SEL_REG);
119 case INSN_CONFIG_GET_CLOCK_SRC:
120 src = inb(dev->iobase + KE_OSC_SEL_REG);
122 case KE_OSC_SEL_20MHZ:
123 data[1] = KE_CLK_20MHZ;
124 data[2] = 50; /* 50ns */
126 case KE_OSC_SEL_4MHZ:
127 data[1] = KE_CLK_4MHZ;
128 data[2] = 250; /* 250ns */
131 data[1] = KE_CLK_EXT;
132 data[2] = 0; /* Unknown */
138 case INSN_CONFIG_RESET:
139 ke_counter_reset(dev);
148 static int ke_counter_do_insn_bits(struct comedi_device *dev,
149 struct comedi_subdevice *s,
150 struct comedi_insn *insn,
153 if (comedi_dio_update_state(s, data))
154 outb(s->state, dev->iobase + KE_DO_REG);
161 static int ke_counter_auto_attach(struct comedi_device *dev,
162 unsigned long context_unused)
164 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
165 struct comedi_subdevice *s;
168 ret = comedi_pci_enable(dev);
171 dev->iobase = pci_resource_start(pcidev, 0);
173 ret = comedi_alloc_subdevices(dev, 2);
177 s = &dev->subdevices[0];
178 s->type = COMEDI_SUBD_COUNTER;
179 s->subdev_flags = SDF_READABLE;
181 s->maxdata = 0x01ffffff;
182 s->range_table = &range_unknown;
183 s->insn_read = ke_counter_insn_read;
184 s->insn_write = ke_counter_insn_write;
185 s->insn_config = ke_counter_insn_config;
187 s = &dev->subdevices[1];
188 s->type = COMEDI_SUBD_DO;
189 s->subdev_flags = SDF_WRITABLE;
192 s->range_table = &range_digital;
193 s->insn_bits = ke_counter_do_insn_bits;
195 outb(KE_OSC_SEL_20MHZ, dev->iobase + KE_OSC_SEL_REG);
197 ke_counter_reset(dev);
202 static struct comedi_driver ke_counter_driver = {
203 .driver_name = "ke_counter",
204 .module = THIS_MODULE,
205 .auto_attach = ke_counter_auto_attach,
206 .detach = comedi_pci_detach,
209 static int ke_counter_pci_probe(struct pci_dev *dev,
210 const struct pci_device_id *id)
212 return comedi_pci_auto_config(dev, &ke_counter_driver,
216 static const struct pci_device_id ke_counter_pci_table[] = {
217 { PCI_DEVICE(PCI_VENDOR_ID_KOLTER, 0x0014) },
220 MODULE_DEVICE_TABLE(pci, ke_counter_pci_table);
222 static struct pci_driver ke_counter_pci_driver = {
223 .name = "ke_counter",
224 .id_table = ke_counter_pci_table,
225 .probe = ke_counter_pci_probe,
226 .remove = comedi_pci_auto_unconfig,
228 module_comedi_pci_driver(ke_counter_driver, ke_counter_pci_driver);
230 MODULE_AUTHOR("Comedi https://www.comedi.org");
231 MODULE_DESCRIPTION("Comedi driver for Kolter Electronic Counter Card");
232 MODULE_LICENSE("GPL");