Commit | Line | Data |
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3726e56b FMH |
1 | /* |
2 | comedi/drivers/das800.c | |
3 | Driver for Keitley das800 series boards and compatibles | |
4 | Copyright (C) 2000 Frank Mori Hess <fmhess@users.sourceforge.net> | |
5 | ||
6 | COMEDI - Linux Control and Measurement Device Interface | |
7 | Copyright (C) 2000 David A. Schleef <ds@schleef.org> | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
3726e56b FMH |
18 | */ |
19 | /* | |
20 | Driver: das800 | |
21 | Description: Keithley Metrabyte DAS800 (& compatibles) | |
22 | Author: Frank Mori Hess <fmhess@users.sourceforge.net> | |
23 | Devices: [Keithley Metrabyte] DAS-800 (das-800), DAS-801 (das-801), | |
24 | DAS-802 (das-802), | |
25 | [Measurement Computing] CIO-DAS800 (cio-das800), | |
26 | CIO-DAS801 (cio-das801), CIO-DAS802 (cio-das802), | |
27 | CIO-DAS802/16 (cio-das802/16) | |
28 | Status: works, cio-das802/16 untested - email me if you have tested it | |
29 | ||
30 | Configuration options: | |
31 | [0] - I/O port base address | |
32 | [1] - IRQ (optional, required for timed or externally triggered conversions) | |
33 | ||
34 | Notes: | |
35 | IRQ can be omitted, although the cmd interface will not work without it. | |
36 | ||
37 | All entries in the channel/gain list must use the same gain and be | |
38 | consecutive channels counting upwards in channel number (these are | |
39 | hardware limitations.) | |
40 | ||
41 | I've never tested the gain setting stuff since I only have a | |
42 | DAS-800 board with fixed gain. | |
43 | ||
44 | The cio-das802/16 does not have a fifo-empty status bit! Therefore | |
45 | only fifo-half-full transfers are possible with this card. | |
46 | */ | |
47 | /* | |
48 | ||
49 | cmd triggers supported: | |
50 | start_src: TRIG_NOW | TRIG_EXT | |
51 | scan_begin_src: TRIG_FOLLOW | |
52 | scan_end_src: TRIG_COUNT | |
53 | convert_src: TRIG_TIMER | TRIG_EXT | |
54 | stop_src: TRIG_NONE | TRIG_COUNT | |
55 | ||
56 | ||
57 | */ | |
58 | ||
ce157f80 | 59 | #include <linux/module.h> |
25436dc9 | 60 | #include <linux/interrupt.h> |
3726e56b FMH |
61 | #include "../comedidev.h" |
62 | ||
3726e56b FMH |
63 | #include <linux/delay.h> |
64 | ||
65 | #include "8253.h" | |
66 | #include "comedi_fc.h" | |
67 | ||
68 | #define DAS800_SIZE 8 | |
2696fb57 | 69 | #define N_CHAN_AI 8 /* number of analog input channels */ |
3726e56b FMH |
70 | |
71 | /* Registers for the das800 */ | |
72 | ||
73 | #define DAS800_LSB 0 | |
74 | #define FIFO_EMPTY 0x1 | |
75 | #define FIFO_OVF 0x2 | |
76 | #define DAS800_MSB 1 | |
77 | #define DAS800_CONTROL1 2 | |
78 | #define CONTROL1_INTE 0x8 | |
79 | #define DAS800_CONV_CONTROL 2 | |
80 | #define ITE 0x1 | |
81 | #define CASC 0x2 | |
82 | #define DTEN 0x4 | |
83 | #define IEOC 0x8 | |
84 | #define EACS 0x10 | |
85 | #define CONV_HCEN 0x80 | |
86 | #define DAS800_SCAN_LIMITS 2 | |
87 | #define DAS800_STATUS 2 | |
88 | #define IRQ 0x8 | |
89 | #define BUSY 0x80 | |
90 | #define DAS800_GAIN 3 | |
eca7cf72 HS |
91 | #define CIO_FFOV 0x8 /* cio-das802/16 fifo overflow */ |
92 | #define CIO_ENHF 0x90 /* cio-das802/16 fifo half full int ena */ | |
3726e56b FMH |
93 | #define CONTROL1 0x80 |
94 | #define CONV_CONTROL 0xa0 | |
95 | #define SCAN_LIMITS 0xc0 | |
96 | #define ID 0xe0 | |
97 | #define DAS800_8254 4 | |
98 | #define DAS800_STATUS2 7 | |
99 | #define STATUS2_HCEN 0x80 | |
100 | #define STATUS2_INTE 0X20 | |
101 | #define DAS800_ID 7 | |
102 | ||
7f340859 HS |
103 | #define DAS802_16_HALF_FIFO_SZ 128 |
104 | ||
febc2ed6 | 105 | struct das800_board { |
3726e56b FMH |
106 | const char *name; |
107 | int ai_speed; | |
9ced1de6 | 108 | const struct comedi_lrange *ai_range; |
3726e56b | 109 | int resolution; |
febc2ed6 | 110 | }; |
3726e56b | 111 | |
9ced1de6 | 112 | static const struct comedi_lrange range_das801_ai = { |
b678075f HS |
113 | 9, { |
114 | BIP_RANGE(5), | |
115 | BIP_RANGE(10), | |
116 | UNI_RANGE(10), | |
117 | BIP_RANGE(0.5), | |
118 | UNI_RANGE(1), | |
119 | BIP_RANGE(0.05), | |
120 | UNI_RANGE(0.1), | |
121 | BIP_RANGE(0.01), | |
122 | UNI_RANGE(0.02) | |
123 | } | |
3726e56b FMH |
124 | }; |
125 | ||
9ced1de6 | 126 | static const struct comedi_lrange range_cio_das801_ai = { |
b678075f HS |
127 | 9, { |
128 | BIP_RANGE(5), | |
129 | BIP_RANGE(10), | |
130 | UNI_RANGE(10), | |
131 | BIP_RANGE(0.5), | |
132 | UNI_RANGE(1), | |
133 | BIP_RANGE(0.05), | |
134 | UNI_RANGE(0.1), | |
135 | BIP_RANGE(0.005), | |
136 | UNI_RANGE(0.01) | |
137 | } | |
3726e56b FMH |
138 | }; |
139 | ||
9ced1de6 | 140 | static const struct comedi_lrange range_das802_ai = { |
b678075f HS |
141 | 9, { |
142 | BIP_RANGE(5), | |
143 | BIP_RANGE(10), | |
144 | UNI_RANGE(10), | |
145 | BIP_RANGE(2.5), | |
146 | UNI_RANGE(5), | |
147 | BIP_RANGE(1.25), | |
148 | UNI_RANGE(2.5), | |
149 | BIP_RANGE(0.625), | |
150 | UNI_RANGE(1.25) | |
151 | } | |
3726e56b FMH |
152 | }; |
153 | ||
9ced1de6 | 154 | static const struct comedi_lrange range_das80216_ai = { |
b678075f HS |
155 | 8, { |
156 | BIP_RANGE(10), | |
157 | UNI_RANGE(10), | |
158 | BIP_RANGE(5), | |
159 | UNI_RANGE(5), | |
160 | BIP_RANGE(2.5), | |
161 | UNI_RANGE(2.5), | |
162 | BIP_RANGE(1.25), | |
163 | UNI_RANGE(1.25) | |
164 | } | |
3726e56b FMH |
165 | }; |
166 | ||
c1a59171 HS |
167 | enum das800_boardinfo { |
168 | BOARD_DAS800, | |
169 | BOARD_CIODAS800, | |
170 | BOARD_DAS801, | |
171 | BOARD_CIODAS801, | |
172 | BOARD_DAS802, | |
173 | BOARD_CIODAS802, | |
174 | BOARD_CIODAS80216, | |
175 | }; | |
3726e56b | 176 | |
febc2ed6 | 177 | static const struct das800_board das800_boards[] = { |
c1a59171 HS |
178 | [BOARD_DAS800] = { |
179 | .name = "das-800", | |
180 | .ai_speed = 25000, | |
181 | .ai_range = &range_bipolar5, | |
182 | .resolution = 12, | |
183 | }, | |
184 | [BOARD_CIODAS800] = { | |
185 | .name = "cio-das800", | |
186 | .ai_speed = 20000, | |
187 | .ai_range = &range_bipolar5, | |
188 | .resolution = 12, | |
189 | }, | |
190 | [BOARD_DAS801] = { | |
191 | .name = "das-801", | |
192 | .ai_speed = 25000, | |
193 | .ai_range = &range_das801_ai, | |
194 | .resolution = 12, | |
195 | }, | |
196 | [BOARD_CIODAS801] = { | |
197 | .name = "cio-das801", | |
198 | .ai_speed = 20000, | |
199 | .ai_range = &range_cio_das801_ai, | |
200 | .resolution = 12, | |
201 | }, | |
202 | [BOARD_DAS802] = { | |
203 | .name = "das-802", | |
204 | .ai_speed = 25000, | |
205 | .ai_range = &range_das802_ai, | |
206 | .resolution = 12, | |
207 | }, | |
208 | [BOARD_CIODAS802] = { | |
209 | .name = "cio-das802", | |
210 | .ai_speed = 20000, | |
211 | .ai_range = &range_das802_ai, | |
212 | .resolution = 12, | |
213 | }, | |
214 | [BOARD_CIODAS80216] = { | |
215 | .name = "cio-das802/16", | |
216 | .ai_speed = 10000, | |
217 | .ai_range = &range_das80216_ai, | |
218 | .resolution = 16, | |
219 | }, | |
3726e56b FMH |
220 | }; |
221 | ||
938f185d | 222 | struct das800_private { |
808cea5a | 223 | unsigned int count; /* number of data points left to be taken */ |
808cea5a HS |
224 | unsigned int divisor1; /* counter 1 value for timed conversions */ |
225 | unsigned int divisor2; /* counter 2 value for timed conversions */ | |
ad5774fc HS |
226 | unsigned int do_bits; /* digital output bits */ |
227 | bool forever; /* flag that we should take data forever */ | |
938f185d | 228 | }; |
3726e56b | 229 | |
0a8fc089 HS |
230 | static void das800_ind_write(struct comedi_device *dev, |
231 | unsigned val, unsigned reg) | |
232 | { | |
233 | /* | |
234 | * Select dev->iobase + 2 to be desired register | |
235 | * then write to that register. | |
236 | */ | |
237 | outb(reg, dev->iobase + DAS800_GAIN); | |
238 | outb(val, dev->iobase + 2); | |
239 | } | |
240 | ||
241 | static unsigned das800_ind_read(struct comedi_device *dev, unsigned reg) | |
242 | { | |
243 | /* | |
244 | * Select dev->iobase + 7 to be desired register | |
245 | * then read from that register. | |
246 | */ | |
247 | outb(reg, dev->iobase + DAS800_GAIN); | |
248 | return inb(dev->iobase + 7); | |
249 | } | |
250 | ||
57d1ebf7 | 251 | static void das800_enable(struct comedi_device *dev) |
3726e56b | 252 | { |
3cb65d4d | 253 | const struct das800_board *thisboard = comedi_board(dev); |
9a1a6cf8 | 254 | struct das800_private *devpriv = dev->private; |
3726e56b | 255 | unsigned long irq_flags; |
9a1a6cf8 | 256 | |
5f74ea14 | 257 | spin_lock_irqsave(&dev->spinlock, irq_flags); |
2696fb57 | 258 | /* enable fifo-half full interrupts for cio-das802/16 */ |
3726e56b FMH |
259 | if (thisboard->resolution == 16) |
260 | outb(CIO_ENHF, dev->iobase + DAS800_GAIN); | |
0a8fc089 HS |
261 | /* enable hardware triggering */ |
262 | das800_ind_write(dev, CONV_HCEN, CONV_CONTROL); | |
263 | /* enable card's interrupt */ | |
264 | das800_ind_write(dev, CONTROL1_INTE | devpriv->do_bits, CONTROL1); | |
5f74ea14 | 265 | spin_unlock_irqrestore(&dev->spinlock, irq_flags); |
3726e56b FMH |
266 | } |
267 | ||
57d1ebf7 | 268 | static void das800_disable(struct comedi_device *dev) |
3726e56b FMH |
269 | { |
270 | unsigned long irq_flags; | |
0a8fc089 | 271 | |
5f74ea14 | 272 | spin_lock_irqsave(&dev->spinlock, irq_flags); |
0a8fc089 HS |
273 | /* disable hardware triggering of conversions */ |
274 | das800_ind_write(dev, 0x0, CONV_CONTROL); | |
5f74ea14 | 275 | spin_unlock_irqrestore(&dev->spinlock, irq_flags); |
3726e56b FMH |
276 | } |
277 | ||
62c3b4bf HS |
278 | static int das800_set_frequency(struct comedi_device *dev) |
279 | { | |
280 | struct das800_private *devpriv = dev->private; | |
281 | int err = 0; | |
282 | ||
283 | if (i8254_load(dev->iobase + DAS800_8254, 0, 1, devpriv->divisor1, 2)) | |
284 | err++; | |
285 | if (i8254_load(dev->iobase + DAS800_8254, 0, 2, devpriv->divisor2, 2)) | |
286 | err++; | |
287 | if (err) | |
288 | return -1; | |
289 | ||
290 | return 0; | |
291 | } | |
292 | ||
fe9b0850 HS |
293 | static int das800_cancel(struct comedi_device *dev, struct comedi_subdevice *s) |
294 | { | |
295 | struct das800_private *devpriv = dev->private; | |
296 | ||
ad5774fc | 297 | devpriv->forever = false; |
fe9b0850 | 298 | devpriv->count = 0; |
57d1ebf7 | 299 | das800_disable(dev); |
fe9b0850 HS |
300 | return 0; |
301 | } | |
302 | ||
0a85b6f0 MT |
303 | static int das800_ai_do_cmdtest(struct comedi_device *dev, |
304 | struct comedi_subdevice *s, | |
305 | struct comedi_cmd *cmd) | |
3726e56b | 306 | { |
3cb65d4d | 307 | const struct das800_board *thisboard = comedi_board(dev); |
9a1a6cf8 | 308 | struct das800_private *devpriv = dev->private; |
3726e56b | 309 | int err = 0; |
3726e56b | 310 | |
27020ffe | 311 | /* Step 1 : check if triggers are trivially valid */ |
3726e56b | 312 | |
27020ffe HS |
313 | err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW | TRIG_EXT); |
314 | err |= cfc_check_trigger_src(&cmd->scan_begin_src, TRIG_FOLLOW); | |
315 | err |= cfc_check_trigger_src(&cmd->convert_src, TRIG_TIMER | TRIG_EXT); | |
316 | err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT); | |
317 | err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE); | |
3726e56b FMH |
318 | |
319 | if (err) | |
320 | return 1; | |
321 | ||
27020ffe | 322 | /* Step 2a : make sure trigger sources are unique */ |
3726e56b | 323 | |
27020ffe HS |
324 | err |= cfc_check_trigger_is_unique(cmd->start_src); |
325 | err |= cfc_check_trigger_is_unique(cmd->convert_src); | |
326 | err |= cfc_check_trigger_is_unique(cmd->stop_src); | |
327 | ||
328 | /* Step 2b : and mutually compatible */ | |
3726e56b FMH |
329 | |
330 | if (err) | |
331 | return 2; | |
332 | ||
50b825ff | 333 | /* Step 3: check if arguments are trivially valid */ |
3726e56b | 334 | |
50b825ff HS |
335 | err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0); |
336 | ||
337 | if (cmd->convert_src == TRIG_TIMER) | |
338 | err |= cfc_check_trigger_arg_min(&cmd->convert_arg, | |
339 | thisboard->ai_speed); | |
340 | ||
341 | err |= cfc_check_trigger_arg_min(&cmd->chanlist_len, 1); | |
342 | err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len); | |
343 | ||
344 | if (cmd->stop_src == TRIG_COUNT) | |
345 | err |= cfc_check_trigger_arg_min(&cmd->stop_arg, 1); | |
346 | else /* TRIG_NONE */ | |
347 | err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0); | |
3726e56b FMH |
348 | |
349 | if (err) | |
350 | return 3; | |
351 | ||
352 | /* step 4: fix up any arguments */ | |
353 | ||
354 | if (cmd->convert_src == TRIG_TIMER) { | |
2bc40583 HS |
355 | int tmp = cmd->convert_arg; |
356 | ||
3726e56b | 357 | /* calculate counter values that give desired timing */ |
cb9cfd7e HS |
358 | i8253_cascade_ns_to_timer(I8254_OSC_BASE_1MHZ, |
359 | &devpriv->divisor1, | |
360 | &devpriv->divisor2, | |
361 | &cmd->convert_arg, cmd->flags); | |
3726e56b FMH |
362 | if (tmp != cmd->convert_arg) |
363 | err++; | |
364 | } | |
365 | ||
366 | if (err) | |
367 | return 4; | |
368 | ||
2696fb57 | 369 | /* check channel/gain list against card's limitations */ |
3726e56b | 370 | if (cmd->chanlist) { |
2bc40583 HS |
371 | unsigned int chan = CR_CHAN(cmd->chanlist[0]); |
372 | unsigned int range = CR_RANGE(cmd->chanlist[0]); | |
373 | unsigned int next; | |
374 | int i; | |
375 | ||
3726e56b | 376 | for (i = 1; i < cmd->chanlist_len; i++) { |
2bc40583 HS |
377 | next = cmd->chanlist[i]; |
378 | if (CR_CHAN(next) != (chan + i) % N_CHAN_AI) { | |
379 | dev_err(dev->class_dev, | |
380 | "chanlist must be consecutive, counting upwards\n"); | |
3726e56b FMH |
381 | err++; |
382 | } | |
2bc40583 HS |
383 | if (CR_RANGE(next) != range) { |
384 | dev_err(dev->class_dev, | |
385 | "chanlist must all have the same gain\n"); | |
3726e56b FMH |
386 | err++; |
387 | } | |
388 | } | |
389 | } | |
390 | ||
391 | if (err) | |
392 | return 5; | |
393 | ||
394 | return 0; | |
395 | } | |
396 | ||
0a85b6f0 MT |
397 | static int das800_ai_do_cmd(struct comedi_device *dev, |
398 | struct comedi_subdevice *s) | |
3726e56b | 399 | { |
3cb65d4d | 400 | const struct das800_board *thisboard = comedi_board(dev); |
9a1a6cf8 | 401 | struct das800_private *devpriv = dev->private; |
d24160f8 HS |
402 | struct comedi_async *async = s->async; |
403 | unsigned int gain = CR_RANGE(async->cmd.chanlist[0]); | |
404 | unsigned int start_chan = CR_CHAN(async->cmd.chanlist[0]); | |
405 | unsigned int end_chan = (start_chan + async->cmd.chanlist_len - 1) % 8; | |
406 | unsigned int scan_chans = (end_chan << 3) | start_chan; | |
3726e56b FMH |
407 | int conv_bits; |
408 | unsigned long irq_flags; | |
3726e56b | 409 | |
57d1ebf7 | 410 | das800_disable(dev); |
3726e56b | 411 | |
5f74ea14 | 412 | spin_lock_irqsave(&dev->spinlock, irq_flags); |
0a8fc089 | 413 | /* set scan limits */ |
d24160f8 | 414 | das800_ind_write(dev, scan_chans, SCAN_LIMITS); |
5f74ea14 | 415 | spin_unlock_irqrestore(&dev->spinlock, irq_flags); |
3726e56b FMH |
416 | |
417 | /* set gain */ | |
3726e56b FMH |
418 | if (thisboard->resolution == 12 && gain > 0) |
419 | gain += 0x7; | |
420 | gain &= 0xf; | |
421 | outb(gain, dev->iobase + DAS800_GAIN); | |
422 | ||
b41b267d | 423 | if (async->cmd.stop_src == TRIG_COUNT) { |
3726e56b | 424 | devpriv->count = async->cmd.stop_arg * async->cmd.chanlist_len; |
ad5774fc | 425 | devpriv->forever = false; |
b41b267d | 426 | } else { /* TRIG_NONE */ |
ad5774fc | 427 | devpriv->forever = true; |
3726e56b | 428 | devpriv->count = 0; |
3726e56b FMH |
429 | } |
430 | ||
431 | /* enable auto channel scan, send interrupts on end of conversion | |
432 | * and set clock source to internal or external | |
433 | */ | |
434 | conv_bits = 0; | |
435 | conv_bits |= EACS | IEOC; | |
436 | if (async->cmd.start_src == TRIG_EXT) | |
437 | conv_bits |= DTEN; | |
b41b267d | 438 | if (async->cmd.convert_src == TRIG_TIMER) { |
3726e56b FMH |
439 | conv_bits |= CASC | ITE; |
440 | /* set conversion frequency */ | |
3726e56b FMH |
441 | if (das800_set_frequency(dev) < 0) { |
442 | comedi_error(dev, "Error setting up counters"); | |
443 | return -1; | |
444 | } | |
3726e56b FMH |
445 | } |
446 | ||
5f74ea14 | 447 | spin_lock_irqsave(&dev->spinlock, irq_flags); |
0a8fc089 | 448 | das800_ind_write(dev, conv_bits, CONV_CONTROL); |
5f74ea14 | 449 | spin_unlock_irqrestore(&dev->spinlock, irq_flags); |
0a8fc089 | 450 | |
57d1ebf7 | 451 | das800_enable(dev); |
3726e56b FMH |
452 | return 0; |
453 | } | |
454 | ||
b4780a3a HS |
455 | static unsigned int das800_ai_get_sample(struct comedi_device *dev) |
456 | { | |
457 | unsigned int lsb = inb(dev->iobase + DAS800_LSB); | |
458 | unsigned int msb = inb(dev->iobase + DAS800_MSB); | |
459 | ||
460 | return (msb << 8) | lsb; | |
461 | } | |
462 | ||
fe9b0850 HS |
463 | static irqreturn_t das800_interrupt(int irq, void *d) |
464 | { | |
fe9b0850 | 465 | struct comedi_device *dev = d; |
fe9b0850 | 466 | struct das800_private *devpriv = dev->private; |
7f340859 HS |
467 | struct comedi_subdevice *s = dev->read_subdev; |
468 | struct comedi_async *async = s ? s->async : NULL; | |
fe9b0850 | 469 | unsigned long irq_flags; |
7f340859 HS |
470 | unsigned int status; |
471 | unsigned int val; | |
472 | bool fifo_empty; | |
473 | bool fifo_overflow; | |
474 | int i; | |
fe9b0850 HS |
475 | |
476 | status = inb(dev->iobase + DAS800_STATUS); | |
fe9b0850 HS |
477 | if (!(status & IRQ)) |
478 | return IRQ_NONE; | |
7f340859 | 479 | if (!dev->attached) |
fe9b0850 HS |
480 | return IRQ_HANDLED; |
481 | ||
fe9b0850 | 482 | spin_lock_irqsave(&dev->spinlock, irq_flags); |
0a8fc089 | 483 | status = das800_ind_read(dev, CONTROL1) & STATUS2_HCEN; |
7f340859 HS |
484 | /* |
485 | * Don't release spinlock yet since we want to make sure | |
486 | * no one else disables hardware conversions. | |
487 | */ | |
488 | ||
489 | /* if hardware conversions are not enabled, then quit */ | |
fe9b0850 HS |
490 | if (status == 0) { |
491 | spin_unlock_irqrestore(&dev->spinlock, irq_flags); | |
492 | return IRQ_HANDLED; | |
493 | } | |
494 | ||
7f340859 HS |
495 | for (i = 0; i < DAS802_16_HALF_FIFO_SZ; i++) { |
496 | val = das800_ai_get_sample(dev); | |
497 | if (s->maxdata == 0x0fff) { | |
498 | fifo_empty = !!(val & FIFO_EMPTY); | |
499 | fifo_overflow = !!(val & FIFO_OVF); | |
fe9b0850 | 500 | } else { |
7f340859 HS |
501 | /* cio-das802/16 has no fifo empty status bit */ |
502 | fifo_empty = false; | |
503 | fifo_overflow = !!(inb(dev->iobase + DAS800_GAIN) & | |
504 | CIO_FFOV); | |
fe9b0850 | 505 | } |
7f340859 | 506 | if (fifo_empty || fifo_overflow) |
fe9b0850 | 507 | break; |
7f340859 HS |
508 | |
509 | if (s->maxdata == 0x0fff) | |
510 | val >>= 4; /* 12-bit sample */ | |
511 | ||
fe9b0850 | 512 | /* if there are more data points to collect */ |
7f340859 | 513 | if (devpriv->count > 0 || devpriv->forever) { |
fe9b0850 | 514 | /* write data point to buffer */ |
7f340859 HS |
515 | cfc_write_to_buffer(s, val & s->maxdata); |
516 | devpriv->count--; | |
fe9b0850 HS |
517 | } |
518 | } | |
519 | async->events |= COMEDI_CB_BLOCK; | |
7f340859 | 520 | |
fe9b0850 HS |
521 | if (fifo_overflow) { |
522 | spin_unlock_irqrestore(&dev->spinlock, irq_flags); | |
fe9b0850 | 523 | async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA; |
f382898f | 524 | cfc_handle_events(dev, s); |
fe9b0850 HS |
525 | return IRQ_HANDLED; |
526 | } | |
7f340859 HS |
527 | |
528 | if (devpriv->count > 0 || devpriv->forever) { | |
fe9b0850 HS |
529 | /* Re-enable card's interrupt. |
530 | * We already have spinlock, so indirect addressing is safe */ | |
0a8fc089 HS |
531 | das800_ind_write(dev, CONTROL1_INTE | devpriv->do_bits, |
532 | CONTROL1); | |
fe9b0850 | 533 | spin_unlock_irqrestore(&dev->spinlock, irq_flags); |
fe9b0850 | 534 | } else { |
7f340859 | 535 | /* otherwise, stop taking data */ |
fe9b0850 | 536 | spin_unlock_irqrestore(&dev->spinlock, irq_flags); |
57d1ebf7 | 537 | das800_disable(dev); |
fe9b0850 HS |
538 | async->events |= COMEDI_CB_EOA; |
539 | } | |
f382898f | 540 | cfc_handle_events(dev, s); |
fe9b0850 HS |
541 | return IRQ_HANDLED; |
542 | } | |
543 | ||
90bc68ec HS |
544 | static int das800_ai_eoc(struct comedi_device *dev, |
545 | struct comedi_subdevice *s, | |
546 | struct comedi_insn *insn, | |
547 | unsigned long context) | |
b4780a3a | 548 | { |
90bc68ec | 549 | unsigned int status; |
b4780a3a | 550 | |
90bc68ec HS |
551 | status = inb(dev->iobase + DAS800_STATUS); |
552 | if ((status & BUSY) == 0) | |
553 | return 0; | |
554 | return -EBUSY; | |
b4780a3a HS |
555 | } |
556 | ||
d7427345 HS |
557 | static int das800_ai_insn_read(struct comedi_device *dev, |
558 | struct comedi_subdevice *s, | |
559 | struct comedi_insn *insn, | |
560 | unsigned int *data) | |
3726e56b | 561 | { |
9a1a6cf8 | 562 | struct das800_private *devpriv = dev->private; |
b4780a3a HS |
563 | unsigned int chan = CR_CHAN(insn->chanspec); |
564 | unsigned int range = CR_RANGE(insn->chanspec); | |
3726e56b | 565 | unsigned long irq_flags; |
b4780a3a HS |
566 | unsigned int val; |
567 | int ret; | |
568 | int i; | |
3726e56b | 569 | |
57d1ebf7 | 570 | das800_disable(dev); |
3726e56b FMH |
571 | |
572 | /* set multiplexer */ | |
5f74ea14 | 573 | spin_lock_irqsave(&dev->spinlock, irq_flags); |
0a8fc089 | 574 | das800_ind_write(dev, chan | devpriv->do_bits, CONTROL1); |
5f74ea14 | 575 | spin_unlock_irqrestore(&dev->spinlock, irq_flags); |
3726e56b FMH |
576 | |
577 | /* set gain / range */ | |
b4780a3a | 578 | if (s->maxdata == 0x0fff && range) |
3726e56b FMH |
579 | range += 0x7; |
580 | range &= 0xf; | |
581 | outb(range, dev->iobase + DAS800_GAIN); | |
582 | ||
5f74ea14 | 583 | udelay(5); |
3726e56b | 584 | |
b4780a3a | 585 | for (i = 0; i < insn->n; i++) { |
3726e56b FMH |
586 | /* trigger conversion */ |
587 | outb_p(0, dev->iobase + DAS800_MSB); | |
588 | ||
90bc68ec | 589 | ret = comedi_timeout(dev, s, insn, das800_ai_eoc, 0); |
b4780a3a HS |
590 | if (ret) |
591 | return ret; | |
592 | ||
593 | val = das800_ai_get_sample(dev); | |
594 | if (s->maxdata == 0x0fff) | |
595 | val >>= 4; /* 12-bit sample */ | |
596 | data[i] = val & s->maxdata; | |
3726e56b FMH |
597 | } |
598 | ||
b4780a3a | 599 | return insn->n; |
3726e56b FMH |
600 | } |
601 | ||
d7427345 HS |
602 | static int das800_di_insn_bits(struct comedi_device *dev, |
603 | struct comedi_subdevice *s, | |
604 | struct comedi_insn *insn, | |
605 | unsigned int *data) | |
3726e56b | 606 | { |
e245b6d1 | 607 | data[1] = (inb(dev->iobase + DAS800_STATUS) >> 4) & 0x7; |
3726e56b | 608 | |
a2714e3e | 609 | return insn->n; |
3726e56b FMH |
610 | } |
611 | ||
d7427345 HS |
612 | static int das800_do_insn_bits(struct comedi_device *dev, |
613 | struct comedi_subdevice *s, | |
614 | struct comedi_insn *insn, | |
615 | unsigned int *data) | |
3726e56b | 616 | { |
9a1a6cf8 | 617 | struct das800_private *devpriv = dev->private; |
3726e56b FMH |
618 | unsigned long irq_flags; |
619 | ||
97f4289a | 620 | if (comedi_dio_update_state(s, data)) { |
26234771 | 621 | devpriv->do_bits = s->state << 4; |
3726e56b | 622 | |
26234771 HS |
623 | spin_lock_irqsave(&dev->spinlock, irq_flags); |
624 | das800_ind_write(dev, CONTROL1_INTE | devpriv->do_bits, | |
625 | CONTROL1); | |
626 | spin_unlock_irqrestore(&dev->spinlock, irq_flags); | |
627 | } | |
3726e56b | 628 | |
26234771 | 629 | data[1] = s->state; |
3726e56b | 630 | |
a2714e3e | 631 | return insn->n; |
3726e56b FMH |
632 | } |
633 | ||
4f71ceeb HS |
634 | static int das800_probe(struct comedi_device *dev) |
635 | { | |
636 | const struct das800_board *thisboard = comedi_board(dev); | |
c1a59171 | 637 | int board = thisboard ? thisboard - das800_boards : -EINVAL; |
4f71ceeb HS |
638 | int id_bits; |
639 | unsigned long irq_flags; | |
4f71ceeb HS |
640 | |
641 | spin_lock_irqsave(&dev->spinlock, irq_flags); | |
0a8fc089 | 642 | id_bits = das800_ind_read(dev, ID) & 0x3; |
4f71ceeb HS |
643 | spin_unlock_irqrestore(&dev->spinlock, irq_flags); |
644 | ||
4f71ceeb HS |
645 | switch (id_bits) { |
646 | case 0x0: | |
c1a59171 HS |
647 | if (board == BOARD_DAS800 || board == BOARD_CIODAS800) |
648 | break; | |
4f71ceeb | 649 | dev_dbg(dev->class_dev, "Board model (probed): DAS-800\n"); |
c1a59171 | 650 | board = BOARD_DAS800; |
4f71ceeb HS |
651 | break; |
652 | case 0x2: | |
c1a59171 HS |
653 | if (board == BOARD_DAS801 || board == BOARD_CIODAS801) |
654 | break; | |
4f71ceeb | 655 | dev_dbg(dev->class_dev, "Board model (probed): DAS-801\n"); |
c1a59171 | 656 | board = BOARD_DAS801; |
4f71ceeb HS |
657 | break; |
658 | case 0x3: | |
c1a59171 HS |
659 | if (board == BOARD_DAS802 || board == BOARD_CIODAS802 || |
660 | board == BOARD_CIODAS80216) | |
661 | break; | |
4f71ceeb | 662 | dev_dbg(dev->class_dev, "Board model (probed): DAS-802\n"); |
c1a59171 | 663 | board = BOARD_DAS802; |
4f71ceeb HS |
664 | break; |
665 | default: | |
c1a59171 | 666 | dev_dbg(dev->class_dev, "Board model: 0x%x (unknown)\n", |
4f71ceeb | 667 | id_bits); |
c1a59171 | 668 | board = -EINVAL; |
4f71ceeb HS |
669 | break; |
670 | } | |
c1a59171 | 671 | return board; |
4f71ceeb HS |
672 | } |
673 | ||
92046ae4 HS |
674 | static int das800_attach(struct comedi_device *dev, struct comedi_devconfig *it) |
675 | { | |
676 | const struct das800_board *thisboard = comedi_board(dev); | |
677 | struct das800_private *devpriv; | |
678 | struct comedi_subdevice *s; | |
679 | unsigned int irq = it->options[1]; | |
680 | unsigned long irq_flags; | |
681 | int board; | |
682 | int ret; | |
683 | ||
0bdab509 | 684 | devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv)); |
92046ae4 HS |
685 | if (!devpriv) |
686 | return -ENOMEM; | |
92046ae4 HS |
687 | |
688 | ret = comedi_request_region(dev, it->options[0], DAS800_SIZE); | |
689 | if (ret) | |
690 | return ret; | |
691 | ||
692 | board = das800_probe(dev); | |
693 | if (board < 0) { | |
694 | dev_dbg(dev->class_dev, "unable to determine board type\n"); | |
695 | return -ENODEV; | |
696 | } | |
697 | dev->board_ptr = das800_boards + board; | |
698 | thisboard = comedi_board(dev); | |
f05ffb6e | 699 | dev->board_name = thisboard->name; |
92046ae4 | 700 | |
f05ffb6e HS |
701 | if (irq > 1 && irq <= 7) { |
702 | ret = request_irq(irq, das800_interrupt, 0, dev->board_name, | |
703 | dev); | |
704 | if (ret == 0) | |
705 | dev->irq = irq; | |
92046ae4 | 706 | } |
92046ae4 HS |
707 | |
708 | ret = comedi_alloc_subdevices(dev, 3); | |
709 | if (ret) | |
710 | return ret; | |
711 | ||
d7427345 | 712 | /* Analog Input subdevice */ |
92046ae4 HS |
713 | s = &dev->subdevices[0]; |
714 | dev->read_subdev = s; | |
77630119 HS |
715 | s->type = COMEDI_SUBD_AI; |
716 | s->subdev_flags = SDF_READABLE | SDF_GROUND; | |
717 | s->n_chan = 8; | |
718 | s->maxdata = (1 << thisboard->resolution) - 1; | |
719 | s->range_table = thisboard->ai_range; | |
d7427345 | 720 | s->insn_read = das800_ai_insn_read; |
77630119 HS |
721 | if (dev->irq) { |
722 | s->subdev_flags |= SDF_CMD_READ; | |
723 | s->len_chanlist = 8; | |
724 | s->do_cmdtest = das800_ai_do_cmdtest; | |
725 | s->do_cmd = das800_ai_do_cmd; | |
726 | s->cancel = das800_cancel; | |
727 | } | |
92046ae4 | 728 | |
d7427345 | 729 | /* Digital Input subdevice */ |
92046ae4 | 730 | s = &dev->subdevices[1]; |
d7427345 HS |
731 | s->type = COMEDI_SUBD_DI; |
732 | s->subdev_flags = SDF_READABLE; | |
733 | s->n_chan = 3; | |
734 | s->maxdata = 1; | |
735 | s->range_table = &range_digital; | |
736 | s->insn_bits = das800_di_insn_bits; | |
737 | ||
738 | /* Digital Output subdevice */ | |
92046ae4 | 739 | s = &dev->subdevices[2]; |
d7427345 HS |
740 | s->type = COMEDI_SUBD_DO; |
741 | s->subdev_flags = SDF_WRITABLE | SDF_READABLE; | |
742 | s->n_chan = 4; | |
743 | s->maxdata = 1; | |
744 | s->range_table = &range_digital; | |
745 | s->insn_bits = das800_do_insn_bits; | |
92046ae4 | 746 | |
57d1ebf7 | 747 | das800_disable(dev); |
92046ae4 HS |
748 | |
749 | /* initialize digital out channels */ | |
750 | spin_lock_irqsave(&dev->spinlock, irq_flags); | |
0a8fc089 | 751 | das800_ind_write(dev, CONTROL1_INTE | devpriv->do_bits, CONTROL1); |
92046ae4 HS |
752 | spin_unlock_irqrestore(&dev->spinlock, irq_flags); |
753 | ||
754 | return 0; | |
755 | }; | |
756 | ||
79a8c0e2 HS |
757 | static struct comedi_driver driver_das800 = { |
758 | .driver_name = "das800", | |
759 | .module = THIS_MODULE, | |
760 | .attach = das800_attach, | |
761 | .detach = comedi_legacy_detach, | |
762 | .num_names = ARRAY_SIZE(das800_boards), | |
763 | .board_name = &das800_boards[0].name, | |
764 | .offset = sizeof(struct das800_board), | |
765 | }; | |
766 | module_comedi_driver(driver_das800); | |
767 | ||
90f703d3 AT |
768 | MODULE_AUTHOR("Comedi http://www.comedi.org"); |
769 | MODULE_DESCRIPTION("Comedi low-level driver"); | |
770 | MODULE_LICENSE("GPL"); |