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51#include <linux/module.h>
52#include <linux/delay.h>
53#include <linux/interrupt.h>
54#include "../comedidev.h"
55
56
57
58
59#define RTI800_CSR 0x00
60#define RTI800_CSR_BUSY BIT(7)
61#define RTI800_CSR_DONE BIT(6)
62#define RTI800_CSR_OVERRUN BIT(5)
63#define RTI800_CSR_TCR BIT(4)
64#define RTI800_CSR_DMA_ENAB BIT(3)
65#define RTI800_CSR_INTR_TC BIT(2)
66#define RTI800_CSR_INTR_EC BIT(1)
67#define RTI800_CSR_INTR_OVRN BIT(0)
68#define RTI800_MUXGAIN 0x01
69#define RTI800_CONVERT 0x02
70#define RTI800_ADCLO 0x03
71#define RTI800_ADCHI 0x04
72#define RTI800_DAC0LO 0x05
73#define RTI800_DAC0HI 0x06
74#define RTI800_DAC1LO 0x07
75#define RTI800_DAC1HI 0x08
76#define RTI800_CLRFLAGS 0x09
77#define RTI800_DI 0x0a
78#define RTI800_DO 0x0b
79#define RTI800_9513A_DATA 0x0c
80#define RTI800_9513A_CNTRL 0x0d
81#define RTI800_9513A_STATUS 0x0d
82
83static const struct comedi_lrange range_rti800_ai_10_bipolar = {
84 4, {
85 BIP_RANGE(10),
86 BIP_RANGE(1),
87 BIP_RANGE(0.1),
88 BIP_RANGE(0.02)
89 }
90};
91
92static const struct comedi_lrange range_rti800_ai_5_bipolar = {
93 4, {
94 BIP_RANGE(5),
95 BIP_RANGE(0.5),
96 BIP_RANGE(0.05),
97 BIP_RANGE(0.01)
98 }
99};
100
101static const struct comedi_lrange range_rti800_ai_unipolar = {
102 4, {
103 UNI_RANGE(10),
104 UNI_RANGE(1),
105 UNI_RANGE(0.1),
106 UNI_RANGE(0.02)
107 }
108};
109
110static const struct comedi_lrange *const rti800_ai_ranges[] = {
111 &range_rti800_ai_10_bipolar,
112 &range_rti800_ai_5_bipolar,
113 &range_rti800_ai_unipolar,
114};
115
116static const struct comedi_lrange *const rti800_ao_ranges[] = {
117 &range_bipolar10,
118 &range_unipolar10,
119};
120
121struct rti800_board {
122 const char *name;
123 int has_ao;
124};
125
126static const struct rti800_board rti800_boardtypes[] = {
127 {
128 .name = "rti800",
129 }, {
130 .name = "rti815",
131 .has_ao = 1,
132 },
133};
134
135struct rti800_private {
136 bool adc_2comp;
137 bool dac_2comp[2];
138 const struct comedi_lrange *ao_range_type_list[2];
139 unsigned char muxgain_bits;
140};
141
142static int rti800_ai_eoc(struct comedi_device *dev,
143 struct comedi_subdevice *s,
144 struct comedi_insn *insn,
145 unsigned long context)
146{
147 unsigned char status;
148
149 status = inb(dev->iobase + RTI800_CSR);
150 if (status & RTI800_CSR_OVERRUN) {
151 outb(0, dev->iobase + RTI800_CLRFLAGS);
152 return -EOVERFLOW;
153 }
154 if (status & RTI800_CSR_DONE)
155 return 0;
156 return -EBUSY;
157}
158
159static int rti800_ai_insn_read(struct comedi_device *dev,
160 struct comedi_subdevice *s,
161 struct comedi_insn *insn,
162 unsigned int *data)
163{
164 struct rti800_private *devpriv = dev->private;
165 unsigned int chan = CR_CHAN(insn->chanspec);
166 unsigned int gain = CR_RANGE(insn->chanspec);
167 unsigned char muxgain_bits;
168 int ret;
169 int i;
170
171 inb(dev->iobase + RTI800_ADCHI);
172 outb(0, dev->iobase + RTI800_CLRFLAGS);
173
174 muxgain_bits = chan | (gain << 5);
175 if (muxgain_bits != devpriv->muxgain_bits) {
176 devpriv->muxgain_bits = muxgain_bits;
177 outb(devpriv->muxgain_bits, dev->iobase + RTI800_MUXGAIN);
178
179
180
181
182 if (insn->n > 0) {
183 int delay = (gain == 0) ? 10 :
184 (gain == 1) ? 20 :
185 (gain == 2) ? 40 : 80;
186
187 udelay(delay);
188 }
189 }
190
191 for (i = 0; i < insn->n; i++) {
192 unsigned int val;
193
194 outb(0, dev->iobase + RTI800_CONVERT);
195
196 ret = comedi_timeout(dev, s, insn, rti800_ai_eoc, 0);
197 if (ret)
198 return ret;
199
200 val = inb(dev->iobase + RTI800_ADCLO);
201 val |= (inb(dev->iobase + RTI800_ADCHI) & 0xf) << 8;
202
203 if (devpriv->adc_2comp)
204 val = comedi_offset_munge(s, val);
205
206 data[i] = val;
207 }
208
209 return insn->n;
210}
211
212static int rti800_ao_insn_write(struct comedi_device *dev,
213 struct comedi_subdevice *s,
214 struct comedi_insn *insn,
215 unsigned int *data)
216{
217 struct rti800_private *devpriv = dev->private;
218 unsigned int chan = CR_CHAN(insn->chanspec);
219 int reg_lo = chan ? RTI800_DAC1LO : RTI800_DAC0LO;
220 int reg_hi = chan ? RTI800_DAC1HI : RTI800_DAC0HI;
221 int i;
222
223 for (i = 0; i < insn->n; i++) {
224 unsigned int val = data[i];
225
226 s->readback[chan] = val;
227
228 if (devpriv->dac_2comp[chan])
229 val = comedi_offset_munge(s, val);
230
231 outb(val & 0xff, dev->iobase + reg_lo);
232 outb((val >> 8) & 0xff, dev->iobase + reg_hi);
233 }
234
235 return insn->n;
236}
237
238static int rti800_di_insn_bits(struct comedi_device *dev,
239 struct comedi_subdevice *s,
240 struct comedi_insn *insn,
241 unsigned int *data)
242{
243 data[1] = inb(dev->iobase + RTI800_DI);
244 return insn->n;
245}
246
247static int rti800_do_insn_bits(struct comedi_device *dev,
248 struct comedi_subdevice *s,
249 struct comedi_insn *insn,
250 unsigned int *data)
251{
252 if (comedi_dio_update_state(s, data)) {
253
254 outb(s->state ^ 0xff, dev->iobase + RTI800_DO);
255 }
256
257 data[1] = s->state;
258
259 return insn->n;
260}
261
262static int rti800_attach(struct comedi_device *dev, struct comedi_devconfig *it)
263{
264 const struct rti800_board *board = dev->board_ptr;
265 struct rti800_private *devpriv;
266 struct comedi_subdevice *s;
267 int ret;
268
269 ret = comedi_request_region(dev, it->options[0], 0x10);
270 if (ret)
271 return ret;
272
273 outb(0, dev->iobase + RTI800_CSR);
274 inb(dev->iobase + RTI800_ADCHI);
275 outb(0, dev->iobase + RTI800_CLRFLAGS);
276
277 devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
278 if (!devpriv)
279 return -ENOMEM;
280
281 devpriv->adc_2comp = (it->options[4] == 0);
282 devpriv->dac_2comp[0] = (it->options[6] == 0);
283 devpriv->dac_2comp[1] = (it->options[8] == 0);
284
285 devpriv->muxgain_bits = 0xff;
286
287 ret = comedi_alloc_subdevices(dev, 4);
288 if (ret)
289 return ret;
290
291 s = &dev->subdevices[0];
292
293 s->type = COMEDI_SUBD_AI;
294 s->subdev_flags = SDF_READABLE | SDF_GROUND;
295 s->n_chan = (it->options[2] ? 16 : 8);
296 s->insn_read = rti800_ai_insn_read;
297 s->maxdata = 0x0fff;
298 s->range_table = (it->options[3] < ARRAY_SIZE(rti800_ai_ranges))
299 ? rti800_ai_ranges[it->options[3]]
300 : &range_unknown;
301
302 s = &dev->subdevices[1];
303 if (board->has_ao) {
304
305 s->type = COMEDI_SUBD_AO;
306 s->subdev_flags = SDF_WRITABLE;
307 s->n_chan = 2;
308 s->maxdata = 0x0fff;
309 s->range_table_list = devpriv->ao_range_type_list;
310 devpriv->ao_range_type_list[0] =
311 (it->options[5] < ARRAY_SIZE(rti800_ao_ranges))
312 ? rti800_ao_ranges[it->options[5]]
313 : &range_unknown;
314 devpriv->ao_range_type_list[1] =
315 (it->options[7] < ARRAY_SIZE(rti800_ao_ranges))
316 ? rti800_ao_ranges[it->options[7]]
317 : &range_unknown;
318 s->insn_write = rti800_ao_insn_write;
319
320 ret = comedi_alloc_subdev_readback(s);
321 if (ret)
322 return ret;
323 } else {
324 s->type = COMEDI_SUBD_UNUSED;
325 }
326
327 s = &dev->subdevices[2];
328
329 s->type = COMEDI_SUBD_DI;
330 s->subdev_flags = SDF_READABLE;
331 s->n_chan = 8;
332 s->insn_bits = rti800_di_insn_bits;
333 s->maxdata = 1;
334 s->range_table = &range_digital;
335
336 s = &dev->subdevices[3];
337
338 s->type = COMEDI_SUBD_DO;
339 s->subdev_flags = SDF_WRITABLE;
340 s->n_chan = 8;
341 s->insn_bits = rti800_do_insn_bits;
342 s->maxdata = 1;
343 s->range_table = &range_digital;
344
345
346
347
348
349
350 return 0;
351}
352
353static struct comedi_driver rti800_driver = {
354 .driver_name = "rti800",
355 .module = THIS_MODULE,
356 .attach = rti800_attach,
357 .detach = comedi_legacy_detach,
358 .num_names = ARRAY_SIZE(rti800_boardtypes),
359 .board_name = &rti800_boardtypes[0].name,
360 .offset = sizeof(struct rti800_board),
361};
362module_comedi_driver(rti800_driver);
363
364MODULE_DESCRIPTION("Comedi: RTI-800 Multifunction Analog/Digital board");
365MODULE_AUTHOR("Comedi http://www.comedi.org");
366MODULE_LICENSE("GPL");
367
