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>
22 #include <linux/comedi/comedi_pci.h>
25 * PCI BAR 0 Register I/O map
27 #define KE_RESET_REG(x) (0x00 + ((x) * 0x20))
28 #define KE_LATCH_REG(x) (0x00 + ((x) * 0x20))
29 #define KE_LSB_REG(x) (0x04 + ((x) * 0x20))
30 #define KE_MID_REG(x) (0x08 + ((x) * 0x20))
31 #define KE_MSB_REG(x) (0x0c + ((x) * 0x20))
32 #define KE_SIGN_REG(x) (0x10 + ((x) * 0x20))
33 #define KE_OSC_SEL_REG 0xf8
34 #define KE_OSC_SEL_CLK(x) (((x) & 0x3) << 0)
35 #define KE_OSC_SEL_EXT KE_OSC_SEL_CLK(1)
36 #define KE_OSC_SEL_4MHZ KE_OSC_SEL_CLK(2)
37 #define KE_OSC_SEL_20MHZ KE_OSC_SEL_CLK(3)
38 #define KE_DO_REG 0xfc
40 static int ke_counter_insn_write(struct comedi_device *dev,
41 struct comedi_subdevice *s,
42 struct comedi_insn *insn,
45 unsigned int chan = CR_CHAN(insn->chanspec);
49 for (i = 0; i < insn->n; i++) {
53 outb((val >> 24) & 0xff, dev->iobase + KE_SIGN_REG(chan));
54 outb((val >> 16) & 0xff, dev->iobase + KE_MSB_REG(chan));
55 outb((val >> 8) & 0xff, dev->iobase + KE_MID_REG(chan));
56 outb((val >> 0) & 0xff, dev->iobase + KE_LSB_REG(chan));
62 static int ke_counter_insn_read(struct comedi_device *dev,
63 struct comedi_subdevice *s,
64 struct comedi_insn *insn,
67 unsigned int chan = CR_CHAN(insn->chanspec);
71 for (i = 0; i < insn->n; i++) {
73 inb(dev->iobase + KE_LATCH_REG(chan));
75 val = inb(dev->iobase + KE_LSB_REG(chan));
76 val |= (inb(dev->iobase + KE_MID_REG(chan)) << 8);
77 val |= (inb(dev->iobase + KE_MSB_REG(chan)) << 16);
78 val |= (inb(dev->iobase + KE_SIGN_REG(chan)) << 24);
86 static void ke_counter_reset(struct comedi_device *dev)
90 for (chan = 0; chan < 3; chan++)
91 outb(0, dev->iobase + KE_RESET_REG(chan));
94 static int ke_counter_insn_config(struct comedi_device *dev,
95 struct comedi_subdevice *s,
96 struct comedi_insn *insn,
102 case INSN_CONFIG_SET_CLOCK_SRC:
104 case KE_CLK_20MHZ: /* default */
105 src = KE_OSC_SEL_20MHZ;
107 case KE_CLK_4MHZ: /* option */
108 src = KE_OSC_SEL_4MHZ;
110 case KE_CLK_EXT: /* Pin 21 on D-sub */
111 src = KE_OSC_SEL_EXT;
116 outb(src, dev->iobase + KE_OSC_SEL_REG);
118 case INSN_CONFIG_GET_CLOCK_SRC:
119 src = inb(dev->iobase + KE_OSC_SEL_REG);
121 case KE_OSC_SEL_20MHZ:
122 data[1] = KE_CLK_20MHZ;
123 data[2] = 50; /* 50ns */
125 case KE_OSC_SEL_4MHZ:
126 data[1] = KE_CLK_4MHZ;
127 data[2] = 250; /* 250ns */
130 data[1] = KE_CLK_EXT;
131 data[2] = 0; /* Unknown */
137 case INSN_CONFIG_RESET:
138 ke_counter_reset(dev);
147 static int ke_counter_do_insn_bits(struct comedi_device *dev,
148 struct comedi_subdevice *s,
149 struct comedi_insn *insn,
152 if (comedi_dio_update_state(s, data))
153 outb(s->state, dev->iobase + KE_DO_REG);
160 static int ke_counter_auto_attach(struct comedi_device *dev,
161 unsigned long context_unused)
163 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
164 struct comedi_subdevice *s;
167 ret = comedi_pci_enable(dev);
170 dev->iobase = pci_resource_start(pcidev, 0);
172 ret = comedi_alloc_subdevices(dev, 2);
176 s = &dev->subdevices[0];
177 s->type = COMEDI_SUBD_COUNTER;
178 s->subdev_flags = SDF_READABLE;
180 s->maxdata = 0x01ffffff;
181 s->range_table = &range_unknown;
182 s->insn_read = ke_counter_insn_read;
183 s->insn_write = ke_counter_insn_write;
184 s->insn_config = ke_counter_insn_config;
186 s = &dev->subdevices[1];
187 s->type = COMEDI_SUBD_DO;
188 s->subdev_flags = SDF_WRITABLE;
191 s->range_table = &range_digital;
192 s->insn_bits = ke_counter_do_insn_bits;
194 outb(KE_OSC_SEL_20MHZ, dev->iobase + KE_OSC_SEL_REG);
196 ke_counter_reset(dev);
201 static struct comedi_driver ke_counter_driver = {
202 .driver_name = "ke_counter",
203 .module = THIS_MODULE,
204 .auto_attach = ke_counter_auto_attach,
205 .detach = comedi_pci_detach,
208 static int ke_counter_pci_probe(struct pci_dev *dev,
209 const struct pci_device_id *id)
211 return comedi_pci_auto_config(dev, &ke_counter_driver,
215 static const struct pci_device_id ke_counter_pci_table[] = {
216 { PCI_DEVICE(PCI_VENDOR_ID_KOLTER, 0x0014) },
219 MODULE_DEVICE_TABLE(pci, ke_counter_pci_table);
221 static struct pci_driver ke_counter_pci_driver = {
222 .name = "ke_counter",
223 .id_table = ke_counter_pci_table,
224 .probe = ke_counter_pci_probe,
225 .remove = comedi_pci_auto_unconfig,
227 module_comedi_pci_driver(ke_counter_driver, ke_counter_pci_driver);
229 MODULE_AUTHOR("Comedi https://www.comedi.org");
230 MODULE_DESCRIPTION("Comedi driver for Kolter Electronic Counter Card");
231 MODULE_LICENSE("GPL");