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27#include <linux/module.h>
28#include <linux/interrupt.h>
29#include "../comedidev.h"
30
31
32
33
34#define MULTIQ3_DIGIN_PORT 0
35#define MULTIQ3_DIGOUT_PORT 0
36#define MULTIQ3_DAC_DATA 2
37#define MULTIQ3_AD_DATA 4
38#define MULTIQ3_AD_CS 4
39#define MULTIQ3_STATUS 6
40#define MULTIQ3_CONTROL 6
41#define MULTIQ3_CLK_DATA 8
42#define MULTIQ3_ENC_DATA 12
43#define MULTIQ3_ENC_CONTROL 14
44
45
46
47
48#define MULTIQ3_AD_MUX_EN 0x0040
49#define MULTIQ3_AD_AUTOZ 0x0080
50#define MULTIQ3_AD_AUTOCAL 0x0100
51#define MULTIQ3_AD_SH 0x0200
52#define MULTIQ3_AD_CLOCK_4M 0x0400
53#define MULTIQ3_DA_LOAD 0x1800
54
55#define MULTIQ3_CONTROL_MUST 0x0600
56
57
58
59
60#define MULTIQ3_STATUS_EOC 0x008
61#define MULTIQ3_STATUS_EOC_I 0x010
62
63
64
65
66#define MULTIQ3_CLOCK_DATA 0x00
67#define MULTIQ3_CLOCK_SETUP 0x18
68#define MULTIQ3_INPUT_SETUP 0x41
69#define MULTIQ3_QUAD_X4 0x38
70#define MULTIQ3_BP_RESET 0x01
71#define MULTIQ3_CNTR_RESET 0x02
72#define MULTIQ3_TRSFRPR_CTR 0x08
73#define MULTIQ3_TRSFRCNTR_OL 0x10
74#define MULTIQ3_EFLAG_RESET 0x06
75
76#define MULTIQ3_TIMEOUT 30
77
78static int multiq3_ai_status(struct comedi_device *dev,
79 struct comedi_subdevice *s,
80 struct comedi_insn *insn,
81 unsigned long context)
82{
83 unsigned int status;
84
85 status = inw(dev->iobase + MULTIQ3_STATUS);
86 if (status & context)
87 return 0;
88 return -EBUSY;
89}
90
91static int multiq3_ai_insn_read(struct comedi_device *dev,
92 struct comedi_subdevice *s,
93 struct comedi_insn *insn, unsigned int *data)
94{
95 int n;
96 int chan;
97 unsigned int hi, lo;
98 int ret;
99
100 chan = CR_CHAN(insn->chanspec);
101 outw(MULTIQ3_CONTROL_MUST | MULTIQ3_AD_MUX_EN | (chan << 3),
102 dev->iobase + MULTIQ3_CONTROL);
103
104 ret = comedi_timeout(dev, s, insn, multiq3_ai_status,
105 MULTIQ3_STATUS_EOC);
106 if (ret)
107 return ret;
108
109 for (n = 0; n < insn->n; n++) {
110 outw(0, dev->iobase + MULTIQ3_AD_CS);
111
112 ret = comedi_timeout(dev, s, insn, multiq3_ai_status,
113 MULTIQ3_STATUS_EOC_I);
114 if (ret)
115 return ret;
116
117 hi = inb(dev->iobase + MULTIQ3_AD_CS);
118 lo = inb(dev->iobase + MULTIQ3_AD_CS);
119 data[n] = (((hi << 8) | lo) + 0x1000) & 0x1fff;
120 }
121
122 return n;
123}
124
125static int multiq3_ao_insn_write(struct comedi_device *dev,
126 struct comedi_subdevice *s,
127 struct comedi_insn *insn,
128 unsigned int *data)
129{
130 unsigned int chan = CR_CHAN(insn->chanspec);
131 unsigned int val = s->readback[chan];
132 int i;
133
134 for (i = 0; i < insn->n; i++) {
135 val = data[i];
136 outw(MULTIQ3_CONTROL_MUST | MULTIQ3_DA_LOAD | chan,
137 dev->iobase + MULTIQ3_CONTROL);
138 outw(val, dev->iobase + MULTIQ3_DAC_DATA);
139 outw(MULTIQ3_CONTROL_MUST, dev->iobase + MULTIQ3_CONTROL);
140 }
141 s->readback[chan] = val;
142
143 return insn->n;
144}
145
146static int multiq3_di_insn_bits(struct comedi_device *dev,
147 struct comedi_subdevice *s,
148 struct comedi_insn *insn, unsigned int *data)
149{
150 data[1] = inw(dev->iobase + MULTIQ3_DIGIN_PORT);
151
152 return insn->n;
153}
154
155static int multiq3_do_insn_bits(struct comedi_device *dev,
156 struct comedi_subdevice *s,
157 struct comedi_insn *insn,
158 unsigned int *data)
159{
160 if (comedi_dio_update_state(s, data))
161 outw(s->state, dev->iobase + MULTIQ3_DIGOUT_PORT);
162
163 data[1] = s->state;
164
165 return insn->n;
166}
167
168static int multiq3_encoder_insn_read(struct comedi_device *dev,
169 struct comedi_subdevice *s,
170 struct comedi_insn *insn,
171 unsigned int *data)
172{
173 int chan = CR_CHAN(insn->chanspec);
174 int control = MULTIQ3_CONTROL_MUST | MULTIQ3_AD_MUX_EN | (chan << 3);
175 int value;
176 int n;
177
178 for (n = 0; n < insn->n; n++) {
179 outw(control, dev->iobase + MULTIQ3_CONTROL);
180 outb(MULTIQ3_BP_RESET, dev->iobase + MULTIQ3_ENC_CONTROL);
181 outb(MULTIQ3_TRSFRCNTR_OL, dev->iobase + MULTIQ3_ENC_CONTROL);
182 value = inb(dev->iobase + MULTIQ3_ENC_DATA);
183 value |= (inb(dev->iobase + MULTIQ3_ENC_DATA) << 8);
184 value |= (inb(dev->iobase + MULTIQ3_ENC_DATA) << 16);
185 data[n] = (value + 0x800000) & 0xffffff;
186 }
187
188 return n;
189}
190
191static void encoder_reset(struct comedi_device *dev)
192{
193 struct comedi_subdevice *s = &dev->subdevices[4];
194 int chan;
195
196 for (chan = 0; chan < s->n_chan; chan++) {
197 int control =
198 MULTIQ3_CONTROL_MUST | MULTIQ3_AD_MUX_EN | (chan << 3);
199 outw(control, dev->iobase + MULTIQ3_CONTROL);
200 outb(MULTIQ3_EFLAG_RESET, dev->iobase + MULTIQ3_ENC_CONTROL);
201 outb(MULTIQ3_BP_RESET, dev->iobase + MULTIQ3_ENC_CONTROL);
202 outb(MULTIQ3_CLOCK_DATA, dev->iobase + MULTIQ3_ENC_DATA);
203 outb(MULTIQ3_CLOCK_SETUP, dev->iobase + MULTIQ3_ENC_CONTROL);
204 outb(MULTIQ3_INPUT_SETUP, dev->iobase + MULTIQ3_ENC_CONTROL);
205 outb(MULTIQ3_QUAD_X4, dev->iobase + MULTIQ3_ENC_CONTROL);
206 outb(MULTIQ3_CNTR_RESET, dev->iobase + MULTIQ3_ENC_CONTROL);
207 }
208}
209
210static int multiq3_attach(struct comedi_device *dev,
211 struct comedi_devconfig *it)
212{
213 struct comedi_subdevice *s;
214 int ret;
215
216 ret = comedi_request_region(dev, it->options[0], 0x10);
217 if (ret)
218 return ret;
219
220 ret = comedi_alloc_subdevices(dev, 5);
221 if (ret)
222 return ret;
223
224 s = &dev->subdevices[0];
225
226 s->type = COMEDI_SUBD_AI;
227 s->subdev_flags = SDF_READABLE | SDF_GROUND;
228 s->n_chan = 8;
229 s->insn_read = multiq3_ai_insn_read;
230 s->maxdata = 0x1fff;
231 s->range_table = &range_bipolar5;
232
233 s = &dev->subdevices[1];
234
235 s->type = COMEDI_SUBD_AO;
236 s->subdev_flags = SDF_WRITABLE;
237 s->n_chan = 8;
238 s->maxdata = 0xfff;
239 s->range_table = &range_bipolar5;
240 s->insn_write = multiq3_ao_insn_write;
241
242 ret = comedi_alloc_subdev_readback(s);
243 if (ret)
244 return ret;
245
246 s = &dev->subdevices[2];
247
248 s->type = COMEDI_SUBD_DI;
249 s->subdev_flags = SDF_READABLE;
250 s->n_chan = 16;
251 s->insn_bits = multiq3_di_insn_bits;
252 s->maxdata = 1;
253 s->range_table = &range_digital;
254
255 s = &dev->subdevices[3];
256
257 s->type = COMEDI_SUBD_DO;
258 s->subdev_flags = SDF_WRITABLE;
259 s->n_chan = 16;
260 s->insn_bits = multiq3_do_insn_bits;
261 s->maxdata = 1;
262 s->range_table = &range_digital;
263 s->state = 0;
264
265 s = &dev->subdevices[4];
266
267 s->type = COMEDI_SUBD_COUNTER;
268 s->subdev_flags = SDF_READABLE | SDF_LSAMPL;
269 s->n_chan = it->options[2] * 2;
270 s->insn_read = multiq3_encoder_insn_read;
271 s->maxdata = 0xffffff;
272 s->range_table = &range_unknown;
273
274 encoder_reset(dev);
275
276 return 0;
277}
278
279static struct comedi_driver multiq3_driver = {
280 .driver_name = "multiq3",
281 .module = THIS_MODULE,
282 .attach = multiq3_attach,
283 .detach = comedi_legacy_detach,
284};
285module_comedi_driver(multiq3_driver);
286
287MODULE_AUTHOR("Comedi http://www.comedi.org");
288MODULE_DESCRIPTION("Comedi low-level driver");
289MODULE_LICENSE("GPL");
290
