Commit | Line | Data |
---|---|---|
2f82613d MH |
1 | /* |
2 | comedi/drivers/ke_counter.c | |
3 | Comedi driver for Kolter-Electronic PCI Counter 1 Card | |
4 | ||
5 | COMEDI - Linux Control and Measurement Device Interface | |
6 | Copyright (C) 2000 David A. Schleef <ds@schleef.org> | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
2f82613d MH |
17 | */ |
18 | /* | |
19 | Driver: ke_counter | |
20 | Description: Driver for Kolter Electronic Counter Card | |
21 | Devices: [Kolter Electronic] PCI Counter Card (ke_counter) | |
22 | Author: Michael Hillmann | |
23 | Updated: Mon, 14 Apr 2008 15:42:42 +0100 | |
24 | Status: tested | |
25 | ||
5afbfa63 | 26 | Configuration Options: not applicable, uses PCI auto config |
2f82613d MH |
27 | |
28 | This driver is a simple driver to read the counter values from | |
29 | Kolter Electronic PCI Counter Card. | |
30 | */ | |
31 | ||
33782dd5 HS |
32 | #include <linux/pci.h> |
33 | ||
2f82613d MH |
34 | #include "../comedidev.h" |
35 | ||
2f82613d MH |
36 | #define CNT_CARD_DEVICE_ID 0x0014 |
37 | ||
2f82613d MH |
38 | /*-- counter write ----------------------------------------------------------*/ |
39 | ||
40 | /* This should be used only for resetting the counters; maybe it is better | |
41 | to make a special command 'reset'. */ | |
da91b269 | 42 | static int cnt_winsn(struct comedi_device *dev, |
0a85b6f0 MT |
43 | struct comedi_subdevice *s, struct comedi_insn *insn, |
44 | unsigned int *data) | |
2f82613d MH |
45 | { |
46 | int chan = CR_CHAN(insn->chanspec); | |
47 | ||
48 | outb((unsigned char)((data[0] >> 24) & 0xff), | |
0a85b6f0 | 49 | dev->iobase + chan * 0x20 + 0x10); |
2f82613d | 50 | outb((unsigned char)((data[0] >> 16) & 0xff), |
0a85b6f0 | 51 | dev->iobase + chan * 0x20 + 0x0c); |
2f82613d | 52 | outb((unsigned char)((data[0] >> 8) & 0xff), |
0a85b6f0 | 53 | dev->iobase + chan * 0x20 + 0x08); |
2f82613d | 54 | outb((unsigned char)((data[0] >> 0) & 0xff), |
0a85b6f0 | 55 | dev->iobase + chan * 0x20 + 0x04); |
2f82613d MH |
56 | |
57 | /* return the number of samples written */ | |
58 | return 1; | |
59 | } | |
60 | ||
61 | /*-- counter read -----------------------------------------------------------*/ | |
62 | ||
da91b269 | 63 | static int cnt_rinsn(struct comedi_device *dev, |
0a85b6f0 MT |
64 | struct comedi_subdevice *s, struct comedi_insn *insn, |
65 | unsigned int *data) | |
2f82613d MH |
66 | { |
67 | unsigned char a0, a1, a2, a3, a4; | |
68 | int chan = CR_CHAN(insn->chanspec); | |
69 | int result; | |
70 | ||
71 | a0 = inb(dev->iobase + chan * 0x20); | |
72 | a1 = inb(dev->iobase + chan * 0x20 + 0x04); | |
73 | a2 = inb(dev->iobase + chan * 0x20 + 0x08); | |
74 | a3 = inb(dev->iobase + chan * 0x20 + 0x0c); | |
75 | a4 = inb(dev->iobase + chan * 0x20 + 0x10); | |
76 | ||
77 | result = (a1 + (a2 * 256) + (a3 * 65536)); | |
78 | if (a4 > 0) | |
79 | result = result - s->maxdata; | |
80 | ||
0a85b6f0 | 81 | *data = (unsigned int)result; |
2f82613d MH |
82 | |
83 | /* return the number of samples read */ | |
84 | return 1; | |
85 | } | |
86 | ||
a690b7e5 | 87 | static int cnt_auto_attach(struct comedi_device *dev, |
750af5e5 | 88 | unsigned long context_unused) |
bd8a9bc1 | 89 | { |
750af5e5 | 90 | struct pci_dev *pcidev = comedi_to_pci_dev(dev); |
30c4d3b8 | 91 | struct comedi_subdevice *s; |
5afbfa63 | 92 | int ret; |
bd8a9bc1 | 93 | |
818f569f | 94 | ret = comedi_pci_enable(dev); |
5afbfa63 HS |
95 | if (ret) |
96 | return ret; | |
97 | dev->iobase = pci_resource_start(pcidev, 0); | |
2f82613d | 98 | |
5afbfa63 HS |
99 | ret = comedi_alloc_subdevices(dev, 1); |
100 | if (ret) | |
101 | return ret; | |
2f82613d | 102 | |
bce27067 | 103 | s = &dev->subdevices[0]; |
30c4d3b8 | 104 | dev->read_subdev = s; |
2f82613d | 105 | |
30c4d3b8 HS |
106 | s->type = COMEDI_SUBD_COUNTER; |
107 | s->subdev_flags = SDF_READABLE /* | SDF_COMMON */ ; | |
c9378767 HS |
108 | s->n_chan = 3; |
109 | s->maxdata = 0x00ffffff; | |
30c4d3b8 HS |
110 | s->insn_read = cnt_rinsn; |
111 | s->insn_write = cnt_winsn; | |
2f82613d | 112 | |
2696fb57 | 113 | /* select 20MHz clock */ |
2f82613d MH |
114 | outb(3, dev->iobase + 248); |
115 | ||
2696fb57 | 116 | /* reset all counters */ |
2f82613d MH |
117 | outb(0, dev->iobase); |
118 | outb(0, dev->iobase + 0x20); | |
119 | outb(0, dev->iobase + 0x40); | |
120 | ||
5afbfa63 HS |
121 | dev_info(dev->class_dev, "%s: %s attached\n", |
122 | dev->driver->driver_name, dev->board_name); | |
123 | ||
2f82613d MH |
124 | return 0; |
125 | } | |
126 | ||
75e6301b HS |
127 | static struct comedi_driver ke_counter_driver = { |
128 | .driver_name = "ke_counter", | |
236788fc | 129 | .module = THIS_MODULE, |
750af5e5 | 130 | .auto_attach = cnt_auto_attach, |
7f072f54 | 131 | .detach = comedi_pci_disable, |
236788fc HS |
132 | }; |
133 | ||
a690b7e5 | 134 | static int ke_counter_pci_probe(struct pci_dev *dev, |
b8f4ac23 | 135 | const struct pci_device_id *id) |
236788fc | 136 | { |
b8f4ac23 HS |
137 | return comedi_pci_auto_config(dev, &ke_counter_driver, |
138 | id->driver_data); | |
236788fc HS |
139 | } |
140 | ||
75e6301b | 141 | static DEFINE_PCI_DEVICE_TABLE(ke_counter_pci_table) = { |
236788fc HS |
142 | { PCI_DEVICE(PCI_VENDOR_ID_KOLTER, CNT_CARD_DEVICE_ID) }, |
143 | { 0 } | |
144 | }; | |
75e6301b | 145 | MODULE_DEVICE_TABLE(pci, ke_counter_pci_table); |
236788fc | 146 | |
75e6301b HS |
147 | static struct pci_driver ke_counter_pci_driver = { |
148 | .name = "ke_counter", | |
149 | .id_table = ke_counter_pci_table, | |
150 | .probe = ke_counter_pci_probe, | |
9901a4d7 | 151 | .remove = comedi_pci_auto_unconfig, |
236788fc | 152 | }; |
75e6301b | 153 | module_comedi_pci_driver(ke_counter_driver, ke_counter_pci_driver); |
236788fc | 154 | |
90f703d3 AT |
155 | MODULE_AUTHOR("Comedi http://www.comedi.org"); |
156 | MODULE_DESCRIPTION("Comedi low-level driver"); | |
157 | MODULE_LICENSE("GPL"); |