1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21#include <linux/module.h>
22
23#include "../comedi_pci.h"
24
25
26
27
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
40
41static int ke_counter_insn_write(struct comedi_device *dev,
42 struct comedi_subdevice *s,
43 struct comedi_insn *insn,
44 unsigned int *data)
45{
46 unsigned int chan = CR_CHAN(insn->chanspec);
47 unsigned int val;
48 int i;
49
50 for (i = 0; i < insn->n; i++) {
51 val = data[0];
52
53
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));
58 }
59
60 return insn->n;
61}
62
63static int ke_counter_insn_read(struct comedi_device *dev,
64 struct comedi_subdevice *s,
65 struct comedi_insn *insn,
66 unsigned int *data)
67{
68 unsigned int chan = CR_CHAN(insn->chanspec);
69 unsigned int val;
70 int i;
71
72 for (i = 0; i < insn->n; i++) {
73
74 inb(dev->iobase + KE_LATCH_REG(chan));
75
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);
80
81 data[i] = val;
82 }
83
84 return insn->n;
85}
86
87static void ke_counter_reset(struct comedi_device *dev)
88{
89 unsigned int chan;
90
91 for (chan = 0; chan < 3; chan++)
92 outb(0, dev->iobase + KE_RESET_REG(chan));
93}
94
95static int ke_counter_insn_config(struct comedi_device *dev,
96 struct comedi_subdevice *s,
97 struct comedi_insn *insn,
98 unsigned int *data)
99{
100 unsigned char src;
101
102 switch (data[0]) {
103 case INSN_CONFIG_SET_CLOCK_SRC:
104 switch (data[1]) {
105 case KE_CLK_20MHZ:
106 src = KE_OSC_SEL_20MHZ;
107 break;
108 case KE_CLK_4MHZ:
109 src = KE_OSC_SEL_4MHZ;
110 break;
111 case KE_CLK_EXT:
112 src = KE_OSC_SEL_EXT;
113 break;
114 default:
115 return -EINVAL;
116 }
117 outb(src, dev->iobase + KE_OSC_SEL_REG);
118 break;
119 case INSN_CONFIG_GET_CLOCK_SRC:
120 src = inb(dev->iobase + KE_OSC_SEL_REG);
121 switch (src) {
122 case KE_OSC_SEL_20MHZ:
123 data[1] = KE_CLK_20MHZ;
124 data[2] = 50;
125 break;
126 case KE_OSC_SEL_4MHZ:
127 data[1] = KE_CLK_4MHZ;
128 data[2] = 250;
129 break;
130 case KE_OSC_SEL_EXT:
131 data[1] = KE_CLK_EXT;
132 data[2] = 0;
133 break;
134 default:
135 return -EINVAL;
136 }
137 break;
138 case INSN_CONFIG_RESET:
139 ke_counter_reset(dev);
140 break;
141 default:
142 return -EINVAL;
143 }
144
145 return insn->n;
146}
147
148static int ke_counter_do_insn_bits(struct comedi_device *dev,
149 struct comedi_subdevice *s,
150 struct comedi_insn *insn,
151 unsigned int *data)
152{
153 if (comedi_dio_update_state(s, data))
154 outb(s->state, dev->iobase + KE_DO_REG);
155
156 data[1] = s->state;
157
158 return insn->n;
159}
160
161static int ke_counter_auto_attach(struct comedi_device *dev,
162 unsigned long context_unused)
163{
164 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
165 struct comedi_subdevice *s;
166 int ret;
167
168 ret = comedi_pci_enable(dev);
169 if (ret)
170 return ret;
171 dev->iobase = pci_resource_start(pcidev, 0);
172
173 ret = comedi_alloc_subdevices(dev, 2);
174 if (ret)
175 return ret;
176
177 s = &dev->subdevices[0];
178 s->type = COMEDI_SUBD_COUNTER;
179 s->subdev_flags = SDF_READABLE;
180 s->n_chan = 3;
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;
186
187 s = &dev->subdevices[1];
188 s->type = COMEDI_SUBD_DO;
189 s->subdev_flags = SDF_WRITABLE;
190 s->n_chan = 3;
191 s->maxdata = 1;
192 s->range_table = &range_digital;
193 s->insn_bits = ke_counter_do_insn_bits;
194
195 outb(KE_OSC_SEL_20MHZ, dev->iobase + KE_OSC_SEL_REG);
196
197 ke_counter_reset(dev);
198
199 return 0;
200}
201
202static 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,
207};
208
209static int ke_counter_pci_probe(struct pci_dev *dev,
210 const struct pci_device_id *id)
211{
212 return comedi_pci_auto_config(dev, &ke_counter_driver,
213 id->driver_data);
214}
215
216static const struct pci_device_id ke_counter_pci_table[] = {
217 { PCI_DEVICE(PCI_VENDOR_ID_KOLTER, 0x0014) },
218 { 0 }
219};
220MODULE_DEVICE_TABLE(pci, ke_counter_pci_table);
221
222static 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,
227};
228module_comedi_pci_driver(ke_counter_driver, ke_counter_pci_driver);
229
230MODULE_AUTHOR("Comedi https://www.comedi.org");
231MODULE_DESCRIPTION("Comedi driver for Kolter Electronic Counter Card");
232MODULE_LICENSE("GPL");
233
