1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Comedi driver for National Instruments AT-MIO16D board
4 * Copyright (C) 2000 Chris R. Baugher <baugher@enteract.com>
5 */
6
7 /*
8 * Driver: ni_atmio16d
9 * Description: National Instruments AT-MIO-16D
10 * Author: Chris R. Baugher <baugher@enteract.com>
11 * Status: unknown
12 * Devices: [National Instruments] AT-MIO-16 (atmio16), AT-MIO-16D (atmio16d)
13 *
14 * Configuration options:
15 * [0] - I/O port
16 * [1] - MIO irq (0 == no irq; or 3,4,5,6,7,9,10,11,12,14,15)
17 * [2] - DIO irq (0 == no irq; or 3,4,5,6,7,9)
18 * [3] - DMA1 channel (0 == no DMA; or 5,6,7)
19 * [4] - DMA2 channel (0 == no DMA; or 5,6,7)
20 * [5] - a/d mux (0=differential; 1=single)
21 * [6] - a/d range (0=bipolar10; 1=bipolar5; 2=unipolar10)
22 * [7] - dac0 range (0=bipolar; 1=unipolar)
23 * [8] - dac0 reference (0=internal; 1=external)
24 * [9] - dac0 coding (0=2's comp; 1=straight binary)
25 * [10] - dac1 range (same as dac0 options)
26 * [11] - dac1 reference (same as dac0 options)
27 * [12] - dac1 coding (same as dac0 options)
28 */
29
30 /*
31 * I must give credit here to Michal Dobes <dobes@tesnet.cz> who
32 * wrote the driver for Advantec's pcl812 boards. I used the interrupt
33 * handling code from his driver as an example for this one.
34 *
35 * Chris Baugher
36 * 5/1/2000
37 *
38 */
39
40 #include <linux/module.h>
41 #include <linux/interrupt.h>
42 #include "../comedidev.h"
43
44 #include "8255.h"
45
46 /* Configuration and Status Registers */
47 #define COM_REG_1 0x00 /* wo 16 */
48 #define STAT_REG 0x00 /* ro 16 */
49 #define COM_REG_2 0x02 /* wo 16 */
50 /* Event Strobe Registers */
51 #define START_CONVERT_REG 0x08 /* wo 16 */
52 #define START_DAQ_REG 0x0A /* wo 16 */
53 #define AD_CLEAR_REG 0x0C /* wo 16 */
54 #define EXT_STROBE_REG 0x0E /* wo 16 */
55 /* Analog Output Registers */
56 #define DAC0_REG 0x10 /* wo 16 */
57 #define DAC1_REG 0x12 /* wo 16 */
58 #define INT2CLR_REG 0x14 /* wo 16 */
59 /* Analog Input Registers */
60 #define MUX_CNTR_REG 0x04 /* wo 16 */
61 #define MUX_GAIN_REG 0x06 /* wo 16 */
62 #define AD_FIFO_REG 0x16 /* ro 16 */
63 #define DMA_TC_INT_CLR_REG 0x16 /* wo 16 */
64 /* AM9513A Counter/Timer Registers */
65 #define AM9513A_DATA_REG 0x18 /* rw 16 */
66 #define AM9513A_COM_REG 0x1A /* wo 16 */
67 #define AM9513A_STAT_REG 0x1A /* ro 16 */
68 /* MIO-16 Digital I/O Registers */
69 #define MIO_16_DIG_IN_REG 0x1C /* ro 16 */
70 #define MIO_16_DIG_OUT_REG 0x1C /* wo 16 */
71 /* RTSI Switch Registers */
72 #define RTSI_SW_SHIFT_REG 0x1E /* wo 8 */
73 #define RTSI_SW_STROBE_REG 0x1F /* wo 8 */
74 /* DIO-24 Registers */
75 #define DIO_24_PORTA_REG 0x00 /* rw 8 */
76 #define DIO_24_PORTB_REG 0x01 /* rw 8 */
77 #define DIO_24_PORTC_REG 0x02 /* rw 8 */
78 #define DIO_24_CNFG_REG 0x03 /* wo 8 */
79
80 /* Command Register bits */
81 #define COMREG1_2SCADC 0x0001
82 #define COMREG1_1632CNT 0x0002
83 #define COMREG1_SCANEN 0x0008
84 #define COMREG1_DAQEN 0x0010
85 #define COMREG1_DMAEN 0x0020
86 #define COMREG1_CONVINTEN 0x0080
87 #define COMREG2_SCN2 0x0010
88 #define COMREG2_INTEN 0x0080
89 #define COMREG2_DOUTEN0 0x0100
90 #define COMREG2_DOUTEN1 0x0200
91 /* Status Register bits */
92 #define STAT_AD_OVERRUN 0x0100
93 #define STAT_AD_OVERFLOW 0x0200
94 #define STAT_AD_DAQPROG 0x0800
95 #define STAT_AD_CONVAVAIL 0x2000
96 #define STAT_AD_DAQSTOPINT 0x4000
97 /* AM9513A Counter/Timer defines */
98 #define CLOCK_1_MHZ 0x8B25
99 #define CLOCK_100_KHZ 0x8C25
100 #define CLOCK_10_KHZ 0x8D25
101 #define CLOCK_1_KHZ 0x8E25
102 #define CLOCK_100_HZ 0x8F25
103
104 struct atmio16_board_t {
105 const char *name;
106 int has_8255;
107 };
108
109 /* range structs */
110 static const struct comedi_lrange range_atmio16d_ai_10_bipolar = {
111 4, {
112 BIP_RANGE(10),
113 BIP_RANGE(1),
114 BIP_RANGE(0.1),
115 BIP_RANGE(0.02)
116 }
117 };
118
119 static const struct comedi_lrange range_atmio16d_ai_5_bipolar = {
120 4, {
121 BIP_RANGE(5),
122 BIP_RANGE(0.5),
123 BIP_RANGE(0.05),
124 BIP_RANGE(0.01)
125 }
126 };
127
128 static const struct comedi_lrange range_atmio16d_ai_unipolar = {
129 4, {
130 UNI_RANGE(10),
131 UNI_RANGE(1),
132 UNI_RANGE(0.1),
133 UNI_RANGE(0.02)
134 }
135 };
136
137 /* private data struct */
138 struct atmio16d_private {
139 enum { adc_diff, adc_singleended } adc_mux;
140 enum { adc_bipolar10, adc_bipolar5, adc_unipolar10 } adc_range;
141 enum { adc_2comp, adc_straight } adc_coding;
142 enum { dac_bipolar, dac_unipolar } dac0_range, dac1_range;
143 enum { dac_internal, dac_external } dac0_reference, dac1_reference;
144 enum { dac_2comp, dac_straight } dac0_coding, dac1_coding;
145 const struct comedi_lrange *ao_range_type_list[2];
146 unsigned int com_reg_1_state; /* current state of command register 1 */
147 unsigned int com_reg_2_state; /* current state of command register 2 */
148 };
149
reset_counters(struct comedi_device * dev)150 static void reset_counters(struct comedi_device *dev)
151 {
152 /* Counter 2 */
153 outw(0xFFC2, dev->iobase + AM9513A_COM_REG);
154 outw(0xFF02, dev->iobase + AM9513A_COM_REG);
155 outw(0x4, dev->iobase + AM9513A_DATA_REG);
156 outw(0xFF0A, dev->iobase + AM9513A_COM_REG);
157 outw(0x3, dev->iobase + AM9513A_DATA_REG);
158 outw(0xFF42, dev->iobase + AM9513A_COM_REG);
159 outw(0xFF42, dev->iobase + AM9513A_COM_REG);
160 /* Counter 3 */
161 outw(0xFFC4, dev->iobase + AM9513A_COM_REG);
162 outw(0xFF03, dev->iobase + AM9513A_COM_REG);
163 outw(0x4, dev->iobase + AM9513A_DATA_REG);
164 outw(0xFF0B, dev->iobase + AM9513A_COM_REG);
165 outw(0x3, dev->iobase + AM9513A_DATA_REG);
166 outw(0xFF44, dev->iobase + AM9513A_COM_REG);
167 outw(0xFF44, dev->iobase + AM9513A_COM_REG);
168 /* Counter 4 */
169 outw(0xFFC8, dev->iobase + AM9513A_COM_REG);
170 outw(0xFF04, dev->iobase + AM9513A_COM_REG);
171 outw(0x4, dev->iobase + AM9513A_DATA_REG);
172 outw(0xFF0C, dev->iobase + AM9513A_COM_REG);
173 outw(0x3, dev->iobase + AM9513A_DATA_REG);
174 outw(0xFF48, dev->iobase + AM9513A_COM_REG);
175 outw(0xFF48, dev->iobase + AM9513A_COM_REG);
176 /* Counter 5 */
177 outw(0xFFD0, dev->iobase + AM9513A_COM_REG);
178 outw(0xFF05, dev->iobase + AM9513A_COM_REG);
179 outw(0x4, dev->iobase + AM9513A_DATA_REG);
180 outw(0xFF0D, dev->iobase + AM9513A_COM_REG);
181 outw(0x3, dev->iobase + AM9513A_DATA_REG);
182 outw(0xFF50, dev->iobase + AM9513A_COM_REG);
183 outw(0xFF50, dev->iobase + AM9513A_COM_REG);
184
185 outw(0, dev->iobase + AD_CLEAR_REG);
186 }
187
reset_atmio16d(struct comedi_device * dev)188 static void reset_atmio16d(struct comedi_device *dev)
189 {
190 struct atmio16d_private *devpriv = dev->private;
191 int i;
192
193 /* now we need to initialize the board */
194 outw(0, dev->iobase + COM_REG_1);
195 outw(0, dev->iobase + COM_REG_2);
196 outw(0, dev->iobase + MUX_GAIN_REG);
197 /* init AM9513A timer */
198 outw(0xFFFF, dev->iobase + AM9513A_COM_REG);
199 outw(0xFFEF, dev->iobase + AM9513A_COM_REG);
200 outw(0xFF17, dev->iobase + AM9513A_COM_REG);
201 outw(0xF000, dev->iobase + AM9513A_DATA_REG);
202 for (i = 1; i <= 5; ++i) {
203 outw(0xFF00 + i, dev->iobase + AM9513A_COM_REG);
204 outw(0x0004, dev->iobase + AM9513A_DATA_REG);
205 outw(0xFF08 + i, dev->iobase + AM9513A_COM_REG);
206 outw(0x3, dev->iobase + AM9513A_DATA_REG);
207 }
208 outw(0xFF5F, dev->iobase + AM9513A_COM_REG);
209 /* timer init done */
210 outw(0, dev->iobase + AD_CLEAR_REG);
211 outw(0, dev->iobase + INT2CLR_REG);
212 /* select straight binary mode for Analog Input */
213 devpriv->com_reg_1_state |= 1;
214 outw(devpriv->com_reg_1_state, dev->iobase + COM_REG_1);
215 devpriv->adc_coding = adc_straight;
216 /* zero the analog outputs */
217 outw(2048, dev->iobase + DAC0_REG);
218 outw(2048, dev->iobase + DAC1_REG);
219 }
220
atmio16d_interrupt(int irq,void * d)221 static irqreturn_t atmio16d_interrupt(int irq, void *d)
222 {
223 struct comedi_device *dev = d;
224 struct comedi_subdevice *s = dev->read_subdev;
225 unsigned short val;
226
227 val = inw(dev->iobase + AD_FIFO_REG);
228 comedi_buf_write_samples(s, &val, 1);
229 comedi_handle_events(dev, s);
230
231 return IRQ_HANDLED;
232 }
233
atmio16d_ai_cmdtest(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_cmd * cmd)234 static int atmio16d_ai_cmdtest(struct comedi_device *dev,
235 struct comedi_subdevice *s,
236 struct comedi_cmd *cmd)
237 {
238 int err = 0;
239
240 /* Step 1 : check if triggers are trivially valid */
241
242 err |= comedi_check_trigger_src(&cmd->start_src, TRIG_NOW);
243 err |= comedi_check_trigger_src(&cmd->scan_begin_src,
244 TRIG_FOLLOW | TRIG_TIMER);
245 err |= comedi_check_trigger_src(&cmd->convert_src, TRIG_TIMER);
246 err |= comedi_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
247 err |= comedi_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
248
249 if (err)
250 return 1;
251
252 /* Step 2a : make sure trigger sources are unique */
253
254 err |= comedi_check_trigger_is_unique(cmd->scan_begin_src);
255 err |= comedi_check_trigger_is_unique(cmd->stop_src);
256
257 /* Step 2b : and mutually compatible */
258
259 if (err)
260 return 2;
261
262 /* Step 3: check if arguments are trivially valid */
263
264 err |= comedi_check_trigger_arg_is(&cmd->start_arg, 0);
265
266 if (cmd->scan_begin_src == TRIG_FOLLOW) {
267 /* internal trigger */
268 err |= comedi_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
269 } else {
270 #if 0
271 /* external trigger */
272 /* should be level/edge, hi/lo specification here */
273 err |= comedi_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
274 #endif
275 }
276
277 err |= comedi_check_trigger_arg_min(&cmd->convert_arg, 10000);
278 #if 0
279 err |= comedi_check_trigger_arg_max(&cmd->convert_arg, SLOWEST_TIMER);
280 #endif
281
282 err |= comedi_check_trigger_arg_is(&cmd->scan_end_arg,
283 cmd->chanlist_len);
284
285 if (cmd->stop_src == TRIG_COUNT)
286 err |= comedi_check_trigger_arg_min(&cmd->stop_arg, 1);
287 else /* TRIG_NONE */
288 err |= comedi_check_trigger_arg_is(&cmd->stop_arg, 0);
289
290 if (err)
291 return 3;
292
293 return 0;
294 }
295
atmio16d_ai_cmd(struct comedi_device * dev,struct comedi_subdevice * s)296 static int atmio16d_ai_cmd(struct comedi_device *dev,
297 struct comedi_subdevice *s)
298 {
299 struct atmio16d_private *devpriv = dev->private;
300 struct comedi_cmd *cmd = &s->async->cmd;
301 unsigned int timer, base_clock;
302 unsigned int sample_count, tmp, chan, gain;
303 int i;
304
305 /*
306 * This is slowly becoming a working command interface.
307 * It is still uber-experimental
308 */
309
310 reset_counters(dev);
311
312 /* check if scanning multiple channels */
313 if (cmd->chanlist_len < 2) {
314 devpriv->com_reg_1_state &= ~COMREG1_SCANEN;
315 outw(devpriv->com_reg_1_state, dev->iobase + COM_REG_1);
316 } else {
317 devpriv->com_reg_1_state |= COMREG1_SCANEN;
318 devpriv->com_reg_2_state |= COMREG2_SCN2;
319 outw(devpriv->com_reg_1_state, dev->iobase + COM_REG_1);
320 outw(devpriv->com_reg_2_state, dev->iobase + COM_REG_2);
321 }
322
323 /* Setup the Mux-Gain Counter */
324 for (i = 0; i < cmd->chanlist_len; ++i) {
325 chan = CR_CHAN(cmd->chanlist[i]);
326 gain = CR_RANGE(cmd->chanlist[i]);
327 outw(i, dev->iobase + MUX_CNTR_REG);
328 tmp = chan | (gain << 6);
329 if (i == cmd->scan_end_arg - 1)
330 tmp |= 0x0010; /* set LASTONE bit */
331 outw(tmp, dev->iobase + MUX_GAIN_REG);
332 }
333
334 /*
335 * Now program the sample interval timer.
336 * Figure out which clock to use then get an appropriate timer value.
337 */
338 if (cmd->convert_arg < 65536000) {
339 base_clock = CLOCK_1_MHZ;
340 timer = cmd->convert_arg / 1000;
341 } else if (cmd->convert_arg < 655360000) {
342 base_clock = CLOCK_100_KHZ;
343 timer = cmd->convert_arg / 10000;
344 } else /* cmd->convert_arg < 6553600000 */ {
345 base_clock = CLOCK_10_KHZ;
346 timer = cmd->convert_arg / 100000;
347 }
348 outw(0xFF03, dev->iobase + AM9513A_COM_REG);
349 outw(base_clock, dev->iobase + AM9513A_DATA_REG);
350 outw(0xFF0B, dev->iobase + AM9513A_COM_REG);
351 outw(0x2, dev->iobase + AM9513A_DATA_REG);
352 outw(0xFF44, dev->iobase + AM9513A_COM_REG);
353 outw(0xFFF3, dev->iobase + AM9513A_COM_REG);
354 outw(timer, dev->iobase + AM9513A_DATA_REG);
355 outw(0xFF24, dev->iobase + AM9513A_COM_REG);
356
357 /* Now figure out how many samples to get */
358 /* and program the sample counter */
359 sample_count = cmd->stop_arg * cmd->scan_end_arg;
360 outw(0xFF04, dev->iobase + AM9513A_COM_REG);
361 outw(0x1025, dev->iobase + AM9513A_DATA_REG);
362 outw(0xFF0C, dev->iobase + AM9513A_COM_REG);
363 if (sample_count < 65536) {
364 /* use only Counter 4 */
365 outw(sample_count, dev->iobase + AM9513A_DATA_REG);
366 outw(0xFF48, dev->iobase + AM9513A_COM_REG);
367 outw(0xFFF4, dev->iobase + AM9513A_COM_REG);
368 outw(0xFF28, dev->iobase + AM9513A_COM_REG);
369 devpriv->com_reg_1_state &= ~COMREG1_1632CNT;
370 outw(devpriv->com_reg_1_state, dev->iobase + COM_REG_1);
371 } else {
372 /* Counter 4 and 5 are needed */
373
374 tmp = sample_count & 0xFFFF;
375 if (tmp)
376 outw(tmp - 1, dev->iobase + AM9513A_DATA_REG);
377 else
378 outw(0xFFFF, dev->iobase + AM9513A_DATA_REG);
379
380 outw(0xFF48, dev->iobase + AM9513A_COM_REG);
381 outw(0, dev->iobase + AM9513A_DATA_REG);
382 outw(0xFF28, dev->iobase + AM9513A_COM_REG);
383 outw(0xFF05, dev->iobase + AM9513A_COM_REG);
384 outw(0x25, dev->iobase + AM9513A_DATA_REG);
385 outw(0xFF0D, dev->iobase + AM9513A_COM_REG);
386 tmp = sample_count & 0xFFFF;
387 if ((tmp == 0) || (tmp == 1)) {
388 outw((sample_count >> 16) & 0xFFFF,
389 dev->iobase + AM9513A_DATA_REG);
390 } else {
391 outw(((sample_count >> 16) & 0xFFFF) + 1,
392 dev->iobase + AM9513A_DATA_REG);
393 }
394 outw(0xFF70, dev->iobase + AM9513A_COM_REG);
395 devpriv->com_reg_1_state |= COMREG1_1632CNT;
396 outw(devpriv->com_reg_1_state, dev->iobase + COM_REG_1);
397 }
398
399 /*
400 * Program the scan interval timer ONLY IF SCANNING IS ENABLED.
401 * Figure out which clock to use then get an appropriate timer value.
402 */
403 if (cmd->chanlist_len > 1) {
404 if (cmd->scan_begin_arg < 65536000) {
405 base_clock = CLOCK_1_MHZ;
406 timer = cmd->scan_begin_arg / 1000;
407 } else if (cmd->scan_begin_arg < 655360000) {
408 base_clock = CLOCK_100_KHZ;
409 timer = cmd->scan_begin_arg / 10000;
410 } else /* cmd->scan_begin_arg < 6553600000 */ {
411 base_clock = CLOCK_10_KHZ;
412 timer = cmd->scan_begin_arg / 100000;
413 }
414 outw(0xFF02, dev->iobase + AM9513A_COM_REG);
415 outw(base_clock, dev->iobase + AM9513A_DATA_REG);
416 outw(0xFF0A, dev->iobase + AM9513A_COM_REG);
417 outw(0x2, dev->iobase + AM9513A_DATA_REG);
418 outw(0xFF42, dev->iobase + AM9513A_COM_REG);
419 outw(0xFFF2, dev->iobase + AM9513A_COM_REG);
420 outw(timer, dev->iobase + AM9513A_DATA_REG);
421 outw(0xFF22, dev->iobase + AM9513A_COM_REG);
422 }
423
424 /* Clear the A/D FIFO and reset the MUX counter */
425 outw(0, dev->iobase + AD_CLEAR_REG);
426 outw(0, dev->iobase + MUX_CNTR_REG);
427 outw(0, dev->iobase + INT2CLR_REG);
428 /* enable this acquisition operation */
429 devpriv->com_reg_1_state |= COMREG1_DAQEN;
430 outw(devpriv->com_reg_1_state, dev->iobase + COM_REG_1);
431 /* enable interrupts for conversion completion */
432 devpriv->com_reg_1_state |= COMREG1_CONVINTEN;
433 devpriv->com_reg_2_state |= COMREG2_INTEN;
434 outw(devpriv->com_reg_1_state, dev->iobase + COM_REG_1);
435 outw(devpriv->com_reg_2_state, dev->iobase + COM_REG_2);
436 /* apply a trigger. this starts the counters! */
437 outw(0, dev->iobase + START_DAQ_REG);
438
439 return 0;
440 }
441
442 /* This will cancel a running acquisition operation */
atmio16d_ai_cancel(struct comedi_device * dev,struct comedi_subdevice * s)443 static int atmio16d_ai_cancel(struct comedi_device *dev,
444 struct comedi_subdevice *s)
445 {
446 reset_atmio16d(dev);
447
448 return 0;
449 }
450
atmio16d_ai_eoc(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned long context)451 static int atmio16d_ai_eoc(struct comedi_device *dev,
452 struct comedi_subdevice *s,
453 struct comedi_insn *insn,
454 unsigned long context)
455 {
456 unsigned int status;
457
458 status = inw(dev->iobase + STAT_REG);
459 if (status & STAT_AD_CONVAVAIL)
460 return 0;
461 if (status & STAT_AD_OVERFLOW) {
462 outw(0, dev->iobase + AD_CLEAR_REG);
463 return -EOVERFLOW;
464 }
465 return -EBUSY;
466 }
467
atmio16d_ai_insn_read(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)468 static int atmio16d_ai_insn_read(struct comedi_device *dev,
469 struct comedi_subdevice *s,
470 struct comedi_insn *insn, unsigned int *data)
471 {
472 struct atmio16d_private *devpriv = dev->private;
473 int i;
474 int chan;
475 int gain;
476 int ret;
477
478 chan = CR_CHAN(insn->chanspec);
479 gain = CR_RANGE(insn->chanspec);
480
481 /* reset the Analog input circuitry */
482 /* outw( 0, dev->iobase+AD_CLEAR_REG ); */
483 /* reset the Analog Input MUX Counter to 0 */
484 /* outw( 0, dev->iobase+MUX_CNTR_REG ); */
485
486 /* set the Input MUX gain */
487 outw(chan | (gain << 6), dev->iobase + MUX_GAIN_REG);
488
489 for (i = 0; i < insn->n; i++) {
490 /* start the conversion */
491 outw(0, dev->iobase + START_CONVERT_REG);
492
493 /* wait for it to finish */
494 ret = comedi_timeout(dev, s, insn, atmio16d_ai_eoc, 0);
495 if (ret)
496 return ret;
497
498 /* read the data now */
499 data[i] = inw(dev->iobase + AD_FIFO_REG);
500 /* change to two's complement if need be */
501 if (devpriv->adc_coding == adc_2comp)
502 data[i] ^= 0x800;
503 }
504
505 return i;
506 }
507
atmio16d_ao_insn_write(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)508 static int atmio16d_ao_insn_write(struct comedi_device *dev,
509 struct comedi_subdevice *s,
510 struct comedi_insn *insn,
511 unsigned int *data)
512 {
513 struct atmio16d_private *devpriv = dev->private;
514 unsigned int chan = CR_CHAN(insn->chanspec);
515 unsigned int reg = (chan) ? DAC1_REG : DAC0_REG;
516 bool munge = false;
517 int i;
518
519 if (chan == 0 && devpriv->dac0_coding == dac_2comp)
520 munge = true;
521 if (chan == 1 && devpriv->dac1_coding == dac_2comp)
522 munge = true;
523
524 for (i = 0; i < insn->n; i++) {
525 unsigned int val = data[i];
526
527 s->readback[chan] = val;
528
529 if (munge)
530 val ^= 0x800;
531
532 outw(val, dev->iobase + reg);
533 }
534
535 return insn->n;
536 }
537
atmio16d_dio_insn_bits(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)538 static int atmio16d_dio_insn_bits(struct comedi_device *dev,
539 struct comedi_subdevice *s,
540 struct comedi_insn *insn,
541 unsigned int *data)
542 {
543 if (comedi_dio_update_state(s, data))
544 outw(s->state, dev->iobase + MIO_16_DIG_OUT_REG);
545
546 data[1] = inw(dev->iobase + MIO_16_DIG_IN_REG);
547
548 return insn->n;
549 }
550
atmio16d_dio_insn_config(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)551 static int atmio16d_dio_insn_config(struct comedi_device *dev,
552 struct comedi_subdevice *s,
553 struct comedi_insn *insn,
554 unsigned int *data)
555 {
556 struct atmio16d_private *devpriv = dev->private;
557 unsigned int chan = CR_CHAN(insn->chanspec);
558 unsigned int mask;
559 int ret;
560
561 if (chan < 4)
562 mask = 0x0f;
563 else
564 mask = 0xf0;
565
566 ret = comedi_dio_insn_config(dev, s, insn, data, mask);
567 if (ret)
568 return ret;
569
570 devpriv->com_reg_2_state &= ~(COMREG2_DOUTEN0 | COMREG2_DOUTEN1);
571 if (s->io_bits & 0x0f)
572 devpriv->com_reg_2_state |= COMREG2_DOUTEN0;
573 if (s->io_bits & 0xf0)
574 devpriv->com_reg_2_state |= COMREG2_DOUTEN1;
575 outw(devpriv->com_reg_2_state, dev->iobase + COM_REG_2);
576
577 return insn->n;
578 }
579
atmio16d_attach(struct comedi_device * dev,struct comedi_devconfig * it)580 static int atmio16d_attach(struct comedi_device *dev,
581 struct comedi_devconfig *it)
582 {
583 const struct atmio16_board_t *board = dev->board_ptr;
584 struct atmio16d_private *devpriv;
585 struct comedi_subdevice *s;
586 int ret;
587
588 ret = comedi_request_region(dev, it->options[0], 0x20);
589 if (ret)
590 return ret;
591
592 ret = comedi_alloc_subdevices(dev, 4);
593 if (ret)
594 return ret;
595
596 devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
597 if (!devpriv)
598 return -ENOMEM;
599
600 /* reset the atmio16d hardware */
601 reset_atmio16d(dev);
602
603 if (it->options[1]) {
604 ret = request_irq(it->options[1], atmio16d_interrupt, 0,
605 dev->board_name, dev);
606 if (ret == 0)
607 dev->irq = it->options[1];
608 }
609
610 /* set device options */
611 devpriv->adc_mux = it->options[5];
612 devpriv->adc_range = it->options[6];
613
614 devpriv->dac0_range = it->options[7];
615 devpriv->dac0_reference = it->options[8];
616 devpriv->dac0_coding = it->options[9];
617 devpriv->dac1_range = it->options[10];
618 devpriv->dac1_reference = it->options[11];
619 devpriv->dac1_coding = it->options[12];
620
621 /* setup sub-devices */
622 s = &dev->subdevices[0];
623 /* ai subdevice */
624 s->type = COMEDI_SUBD_AI;
625 s->subdev_flags = SDF_READABLE | SDF_GROUND;
626 s->n_chan = (devpriv->adc_mux ? 16 : 8);
627 s->insn_read = atmio16d_ai_insn_read;
628 s->maxdata = 0xfff; /* 4095 decimal */
629 switch (devpriv->adc_range) {
630 case adc_bipolar10:
631 s->range_table = &range_atmio16d_ai_10_bipolar;
632 break;
633 case adc_bipolar5:
634 s->range_table = &range_atmio16d_ai_5_bipolar;
635 break;
636 case adc_unipolar10:
637 s->range_table = &range_atmio16d_ai_unipolar;
638 break;
639 }
640 if (dev->irq) {
641 dev->read_subdev = s;
642 s->subdev_flags |= SDF_CMD_READ;
643 s->len_chanlist = 16;
644 s->do_cmdtest = atmio16d_ai_cmdtest;
645 s->do_cmd = atmio16d_ai_cmd;
646 s->cancel = atmio16d_ai_cancel;
647 }
648
649 /* ao subdevice */
650 s = &dev->subdevices[1];
651 s->type = COMEDI_SUBD_AO;
652 s->subdev_flags = SDF_WRITABLE;
653 s->n_chan = 2;
654 s->maxdata = 0xfff; /* 4095 decimal */
655 s->range_table_list = devpriv->ao_range_type_list;
656 switch (devpriv->dac0_range) {
657 case dac_bipolar:
658 devpriv->ao_range_type_list[0] = &range_bipolar10;
659 break;
660 case dac_unipolar:
661 devpriv->ao_range_type_list[0] = &range_unipolar10;
662 break;
663 }
664 switch (devpriv->dac1_range) {
665 case dac_bipolar:
666 devpriv->ao_range_type_list[1] = &range_bipolar10;
667 break;
668 case dac_unipolar:
669 devpriv->ao_range_type_list[1] = &range_unipolar10;
670 break;
671 }
672 s->insn_write = atmio16d_ao_insn_write;
673
674 ret = comedi_alloc_subdev_readback(s);
675 if (ret)
676 return ret;
677
678 /* Digital I/O */
679 s = &dev->subdevices[2];
680 s->type = COMEDI_SUBD_DIO;
681 s->subdev_flags = SDF_WRITABLE | SDF_READABLE;
682 s->n_chan = 8;
683 s->insn_bits = atmio16d_dio_insn_bits;
684 s->insn_config = atmio16d_dio_insn_config;
685 s->maxdata = 1;
686 s->range_table = &range_digital;
687
688 /* 8255 subdevice */
689 s = &dev->subdevices[3];
690 if (board->has_8255) {
691 ret = subdev_8255_init(dev, s, NULL, 0x00);
692 if (ret)
693 return ret;
694 } else {
695 s->type = COMEDI_SUBD_UNUSED;
696 }
697
698 /* don't yet know how to deal with counter/timers */
699 #if 0
700 s = &dev->subdevices[4];
701 /* do */
702 s->type = COMEDI_SUBD_TIMER;
703 s->n_chan = 0;
704 s->maxdata = 0
705 #endif
706
707 return 0;
708 }
709
atmio16d_detach(struct comedi_device * dev)710 static void atmio16d_detach(struct comedi_device *dev)
711 {
712 reset_atmio16d(dev);
713 comedi_legacy_detach(dev);
714 }
715
716 static const struct atmio16_board_t atmio16_boards[] = {
717 {
718 .name = "atmio16",
719 .has_8255 = 0,
720 }, {
721 .name = "atmio16d",
722 .has_8255 = 1,
723 },
724 };
725
726 static struct comedi_driver atmio16d_driver = {
727 .driver_name = "atmio16",
728 .module = THIS_MODULE,
729 .attach = atmio16d_attach,
730 .detach = atmio16d_detach,
731 .board_name = &atmio16_boards[0].name,
732 .num_names = ARRAY_SIZE(atmio16_boards),
733 .offset = sizeof(struct atmio16_board_t),
734 };
735 module_comedi_driver(atmio16d_driver);
736
737 MODULE_AUTHOR("Comedi http://www.comedi.org");
738 MODULE_DESCRIPTION("Comedi low-level driver");
739 MODULE_LICENSE("GPL");
740
