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30#include <linux/module.h>
31
32#include "../comedi_pci.h"
33
34
35
36
37#define KE_RESET_REG(x) (0x00 + ((x) * 0x20))
38#define KE_LATCH_REG(x) (0x00 + ((x) * 0x20))
39#define KE_LSB_REG(x) (0x04 + ((x) * 0x20))
40#define KE_MID_REG(x) (0x08 + ((x) * 0x20))
41#define KE_MSB_REG(x) (0x0c + ((x) * 0x20))
42#define KE_SIGN_REG(x) (0x10 + ((x) * 0x20))
43#define KE_OSC_SEL_REG 0xf8
44#define KE_OSC_SEL_CLK(x) (((x) & 0x3) << 0)
45#define KE_OSC_SEL_EXT KE_OSC_SEL_CLK(1)
46#define KE_OSC_SEL_4MHZ KE_OSC_SEL_CLK(2)
47#define KE_OSC_SEL_20MHZ KE_OSC_SEL_CLK(3)
48#define KE_DO_REG 0xfc
49
50static int ke_counter_insn_write(struct comedi_device *dev,
51 struct comedi_subdevice *s,
52 struct comedi_insn *insn,
53 unsigned int *data)
54{
55 unsigned int chan = CR_CHAN(insn->chanspec);
56 unsigned int val;
57 int i;
58
59 for (i = 0; i < insn->n; i++) {
60 val = data[0];
61
62
63 outb((val >> 24) & 0xff, dev->iobase + KE_SIGN_REG(chan));
64 outb((val >> 16) & 0xff, dev->iobase + KE_MSB_REG(chan));
65 outb((val >> 8) & 0xff, dev->iobase + KE_MID_REG(chan));
66 outb((val >> 0) & 0xff, dev->iobase + KE_LSB_REG(chan));
67 }
68
69 return insn->n;
70}
71
72static int ke_counter_insn_read(struct comedi_device *dev,
73 struct comedi_subdevice *s,
74 struct comedi_insn *insn,
75 unsigned int *data)
76{
77 unsigned int chan = CR_CHAN(insn->chanspec);
78 unsigned int val;
79 int i;
80
81 for (i = 0; i < insn->n; i++) {
82
83 inb(dev->iobase + KE_LATCH_REG(chan));
84
85 val = inb(dev->iobase + KE_LSB_REG(chan));
86 val |= (inb(dev->iobase + KE_MID_REG(chan)) << 8);
87 val |= (inb(dev->iobase + KE_MSB_REG(chan)) << 16);
88 val |= (inb(dev->iobase + KE_SIGN_REG(chan)) << 24);
89
90 data[i] = val;
91 }
92
93 return insn->n;
94}
95
96static void ke_counter_reset(struct comedi_device *dev)
97{
98 unsigned int chan;
99
100 for (chan = 0; chan < 3; chan++)
101 outb(0, dev->iobase + KE_RESET_REG(chan));
102}
103
104static int ke_counter_insn_config(struct comedi_device *dev,
105 struct comedi_subdevice *s,
106 struct comedi_insn *insn,
107 unsigned int *data)
108{
109 unsigned char src;
110
111 switch (data[0]) {
112 case INSN_CONFIG_SET_CLOCK_SRC:
113 switch (data[1]) {
114 case KE_CLK_20MHZ:
115 src = KE_OSC_SEL_20MHZ;
116 break;
117 case KE_CLK_4MHZ:
118 src = KE_OSC_SEL_4MHZ;
119 break;
120 case KE_CLK_EXT:
121 src = KE_OSC_SEL_EXT;
122 break;
123 default:
124 return -EINVAL;
125 }
126 outb(src, dev->iobase + KE_OSC_SEL_REG);
127 break;
128 case INSN_CONFIG_GET_CLOCK_SRC:
129 src = inb(dev->iobase + KE_OSC_SEL_REG);
130 switch (src) {
131 case KE_OSC_SEL_20MHZ:
132 data[1] = KE_CLK_20MHZ;
133 data[2] = 50;
134 break;
135 case KE_OSC_SEL_4MHZ:
136 data[1] = KE_CLK_4MHZ;
137 data[2] = 250;
138 break;
139 case KE_OSC_SEL_EXT:
140 data[1] = KE_CLK_EXT;
141 data[2] = 0;
142 break;
143 default:
144 return -EINVAL;
145 }
146 break;
147 case INSN_CONFIG_RESET:
148 ke_counter_reset(dev);
149 break;
150 default:
151 return -EINVAL;
152 }
153
154 return insn->n;
155}
156
157static int ke_counter_do_insn_bits(struct comedi_device *dev,
158 struct comedi_subdevice *s,
159 struct comedi_insn *insn,
160 unsigned int *data)
161{
162 if (comedi_dio_update_state(s, data))
163 outb(s->state, dev->iobase + KE_DO_REG);
164
165 data[1] = s->state;
166
167 return insn->n;
168}
169
170static int ke_counter_auto_attach(struct comedi_device *dev,
171 unsigned long context_unused)
172{
173 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
174 struct comedi_subdevice *s;
175 int ret;
176
177 ret = comedi_pci_enable(dev);
178 if (ret)
179 return ret;
180 dev->iobase = pci_resource_start(pcidev, 0);
181
182 ret = comedi_alloc_subdevices(dev, 2);
183 if (ret)
184 return ret;
185
186 s = &dev->subdevices[0];
187 s->type = COMEDI_SUBD_COUNTER;
188 s->subdev_flags = SDF_READABLE;
189 s->n_chan = 3;
190 s->maxdata = 0x01ffffff;
191 s->range_table = &range_unknown;
192 s->insn_read = ke_counter_insn_read;
193 s->insn_write = ke_counter_insn_write;
194 s->insn_config = ke_counter_insn_config;
195
196 s = &dev->subdevices[1];
197 s->type = COMEDI_SUBD_DO;
198 s->subdev_flags = SDF_WRITABLE;
199 s->n_chan = 3;
200 s->maxdata = 1;
201 s->range_table = &range_digital;
202 s->insn_bits = ke_counter_do_insn_bits;
203
204 outb(KE_OSC_SEL_20MHZ, dev->iobase + KE_OSC_SEL_REG);
205
206 ke_counter_reset(dev);
207
208 return 0;
209}
210
211static struct comedi_driver ke_counter_driver = {
212 .driver_name = "ke_counter",
213 .module = THIS_MODULE,
214 .auto_attach = ke_counter_auto_attach,
215 .detach = comedi_pci_detach,
216};
217
218static int ke_counter_pci_probe(struct pci_dev *dev,
219 const struct pci_device_id *id)
220{
221 return comedi_pci_auto_config(dev, &ke_counter_driver,
222 id->driver_data);
223}
224
225static const struct pci_device_id ke_counter_pci_table[] = {
226 { PCI_DEVICE(PCI_VENDOR_ID_KOLTER, 0x0014) },
227 { 0 }
228};
229MODULE_DEVICE_TABLE(pci, ke_counter_pci_table);
230
231static struct pci_driver ke_counter_pci_driver = {
232 .name = "ke_counter",
233 .id_table = ke_counter_pci_table,
234 .probe = ke_counter_pci_probe,
235 .remove = comedi_pci_auto_unconfig,
236};
237module_comedi_pci_driver(ke_counter_driver, ke_counter_pci_driver);
238
239MODULE_AUTHOR("Comedi http://www.comedi.org");
240MODULE_DESCRIPTION("Comedi driver for Kolter Electronic Counter Card");
241MODULE_LICENSE("GPL");
242
