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. | |
3726e56b FMH |
46 | |
47 | cmd triggers supported: | |
48 | start_src: TRIG_NOW | TRIG_EXT | |
49 | scan_begin_src: TRIG_FOLLOW | |
50 | scan_end_src: TRIG_COUNT | |
51 | convert_src: TRIG_TIMER | TRIG_EXT | |
52 | stop_src: TRIG_NONE | TRIG_COUNT | |
3726e56b FMH |
53 | */ |
54 | ||
ce157f80 | 55 | #include <linux/module.h> |
25436dc9 | 56 | #include <linux/interrupt.h> |
3726e56b FMH |
57 | #include <linux/delay.h> |
58 | ||
e4690dec HS |
59 | #include "../comedidev.h" |
60 | ||
e4690dec | 61 | #include "comedi_8254.h" |
3726e56b | 62 | |
2696fb57 | 63 | #define N_CHAN_AI 8 /* number of analog input channels */ |
3726e56b FMH |
64 | |
65 | /* Registers for the das800 */ | |
66 | ||
67 | #define DAS800_LSB 0 | |
68 | #define FIFO_EMPTY 0x1 | |
69 | #define FIFO_OVF 0x2 | |
70 | #define DAS800_MSB 1 | |
71 | #define DAS800_CONTROL1 2 | |
72 | #define CONTROL1_INTE 0x8 | |
73 | #define DAS800_CONV_CONTROL 2 | |
74 | #define ITE 0x1 | |
75 | #define CASC 0x2 | |
76 | #define DTEN 0x4 | |
77 | #define IEOC 0x8 | |
78 | #define EACS 0x10 | |
79 | #define CONV_HCEN 0x80 | |
80 | #define DAS800_SCAN_LIMITS 2 | |
81 | #define DAS800_STATUS 2 | |
82 | #define IRQ 0x8 | |
83 | #define BUSY 0x80 | |
84 | #define DAS800_GAIN 3 | |
eca7cf72 HS |
85 | #define CIO_FFOV 0x8 /* cio-das802/16 fifo overflow */ |
86 | #define CIO_ENHF 0x90 /* cio-das802/16 fifo half full int ena */ | |
3726e56b FMH |
87 | #define CONTROL1 0x80 |
88 | #define CONV_CONTROL 0xa0 | |
89 | #define SCAN_LIMITS 0xc0 | |
90 | #define ID 0xe0 | |
91 | #define DAS800_8254 4 | |
92 | #define DAS800_STATUS2 7 | |
93 | #define STATUS2_HCEN 0x80 | |
94 | #define STATUS2_INTE 0X20 | |
95 | #define DAS800_ID 7 | |
96 | ||
7f340859 HS |
97 | #define DAS802_16_HALF_FIFO_SZ 128 |
98 | ||
febc2ed6 | 99 | struct das800_board { |
3726e56b FMH |
100 | const char *name; |
101 | int ai_speed; | |
9ced1de6 | 102 | const struct comedi_lrange *ai_range; |
3726e56b | 103 | int resolution; |
febc2ed6 | 104 | }; |
3726e56b | 105 | |
9ced1de6 | 106 | static const struct comedi_lrange range_das801_ai = { |
b678075f HS |
107 | 9, { |
108 | BIP_RANGE(5), | |
109 | BIP_RANGE(10), | |
110 | UNI_RANGE(10), | |
111 | BIP_RANGE(0.5), | |
112 | UNI_RANGE(1), | |
113 | BIP_RANGE(0.05), | |
114 | UNI_RANGE(0.1), | |
115 | BIP_RANGE(0.01), | |
116 | UNI_RANGE(0.02) | |
117 | } | |
3726e56b FMH |
118 | }; |
119 | ||
9ced1de6 | 120 | static const struct comedi_lrange range_cio_das801_ai = { |
b678075f HS |
121 | 9, { |
122 | BIP_RANGE(5), | |
123 | BIP_RANGE(10), | |
124 | UNI_RANGE(10), | |
125 | BIP_RANGE(0.5), | |
126 | UNI_RANGE(1), | |
127 | BIP_RANGE(0.05), | |
128 | UNI_RANGE(0.1), | |
129 | BIP_RANGE(0.005), | |
130 | UNI_RANGE(0.01) | |
131 | } | |
3726e56b FMH |
132 | }; |
133 | ||
9ced1de6 | 134 | static const struct comedi_lrange range_das802_ai = { |
b678075f HS |
135 | 9, { |
136 | BIP_RANGE(5), | |
137 | BIP_RANGE(10), | |
138 | UNI_RANGE(10), | |
139 | BIP_RANGE(2.5), | |
140 | UNI_RANGE(5), | |
141 | BIP_RANGE(1.25), | |
142 | UNI_RANGE(2.5), | |
143 | BIP_RANGE(0.625), | |
144 | UNI_RANGE(1.25) | |
145 | } | |
3726e56b FMH |
146 | }; |
147 | ||
9ced1de6 | 148 | static const struct comedi_lrange range_das80216_ai = { |
b678075f HS |
149 | 8, { |
150 | BIP_RANGE(10), | |
151 | UNI_RANGE(10), | |
152 | BIP_RANGE(5), | |
153 | UNI_RANGE(5), | |
154 | BIP_RANGE(2.5), | |
155 | UNI_RANGE(2.5), | |
156 | BIP_RANGE(1.25), | |
157 | UNI_RANGE(1.25) | |
158 | } | |
3726e56b FMH |
159 | }; |
160 | ||
c1a59171 HS |
161 | enum das800_boardinfo { |
162 | BOARD_DAS800, | |
163 | BOARD_CIODAS800, | |
164 | BOARD_DAS801, | |
165 | BOARD_CIODAS801, | |
166 | BOARD_DAS802, | |
167 | BOARD_CIODAS802, | |
168 | BOARD_CIODAS80216, | |
169 | }; | |
3726e56b | 170 | |
febc2ed6 | 171 | static const struct das800_board das800_boards[] = { |
c1a59171 HS |
172 | [BOARD_DAS800] = { |
173 | .name = "das-800", | |
174 | .ai_speed = 25000, | |
175 | .ai_range = &range_bipolar5, | |
176 | .resolution = 12, | |
177 | }, | |
178 | [BOARD_CIODAS800] = { | |
179 | .name = "cio-das800", | |
180 | .ai_speed = 20000, | |
181 | .ai_range = &range_bipolar5, | |
182 | .resolution = 12, | |
183 | }, | |
184 | [BOARD_DAS801] = { | |
185 | .name = "das-801", | |
186 | .ai_speed = 25000, | |
187 | .ai_range = &range_das801_ai, | |
188 | .resolution = 12, | |
189 | }, | |
190 | [BOARD_CIODAS801] = { | |
191 | .name = "cio-das801", | |
192 | .ai_speed = 20000, | |
193 | .ai_range = &range_cio_das801_ai, | |
194 | .resolution = 12, | |
195 | }, | |
196 | [BOARD_DAS802] = { | |
197 | .name = "das-802", | |
198 | .ai_speed = 25000, | |
199 | .ai_range = &range_das802_ai, | |
200 | .resolution = 12, | |
201 | }, | |
202 | [BOARD_CIODAS802] = { | |
203 | .name = "cio-das802", | |
204 | .ai_speed = 20000, | |
205 | .ai_range = &range_das802_ai, | |
206 | .resolution = 12, | |
207 | }, | |
208 | [BOARD_CIODAS80216] = { | |
209 | .name = "cio-das802/16", | |
210 | .ai_speed = 10000, | |
211 | .ai_range = &range_das80216_ai, | |
212 | .resolution = 16, | |
213 | }, | |
3726e56b FMH |
214 | }; |
215 | ||
938f185d | 216 | struct das800_private { |
ad5774fc | 217 | unsigned int do_bits; /* digital output bits */ |
938f185d | 218 | }; |
3726e56b | 219 | |
0a8fc089 HS |
220 | static void das800_ind_write(struct comedi_device *dev, |
221 | unsigned val, unsigned reg) | |
222 | { | |
223 | /* | |
224 | * Select dev->iobase + 2 to be desired register | |
225 | * then write to that register. | |
226 | */ | |
227 | outb(reg, dev->iobase + DAS800_GAIN); | |
228 | outb(val, dev->iobase + 2); | |
229 | } | |
230 | ||
231 | static unsigned das800_ind_read(struct comedi_device *dev, unsigned reg) | |
232 | { | |
233 | /* | |
234 | * Select dev->iobase + 7 to be desired register | |
235 | * then read from that register. | |
236 | */ | |
237 | outb(reg, dev->iobase + DAS800_GAIN); | |
238 | return inb(dev->iobase + 7); | |
239 | } | |
240 | ||
57d1ebf7 | 241 | static void das800_enable(struct comedi_device *dev) |
3726e56b | 242 | { |
4f3aa186 | 243 | const struct das800_board *board = dev->board_ptr; |
9a1a6cf8 | 244 | struct das800_private *devpriv = dev->private; |
3726e56b | 245 | unsigned long irq_flags; |
9a1a6cf8 | 246 | |
5f74ea14 | 247 | spin_lock_irqsave(&dev->spinlock, irq_flags); |
2696fb57 | 248 | /* enable fifo-half full interrupts for cio-das802/16 */ |
4f3aa186 | 249 | if (board->resolution == 16) |
3726e56b | 250 | outb(CIO_ENHF, dev->iobase + DAS800_GAIN); |
0a8fc089 HS |
251 | /* enable hardware triggering */ |
252 | das800_ind_write(dev, CONV_HCEN, CONV_CONTROL); | |
253 | /* enable card's interrupt */ | |
254 | das800_ind_write(dev, CONTROL1_INTE | devpriv->do_bits, CONTROL1); | |
5f74ea14 | 255 | spin_unlock_irqrestore(&dev->spinlock, irq_flags); |
3726e56b FMH |
256 | } |
257 | ||
57d1ebf7 | 258 | static void das800_disable(struct comedi_device *dev) |
3726e56b FMH |
259 | { |
260 | unsigned long irq_flags; | |
0a8fc089 | 261 | |
5f74ea14 | 262 | spin_lock_irqsave(&dev->spinlock, irq_flags); |
0a8fc089 HS |
263 | /* disable hardware triggering of conversions */ |
264 | das800_ind_write(dev, 0x0, CONV_CONTROL); | |
5f74ea14 | 265 | spin_unlock_irqrestore(&dev->spinlock, irq_flags); |
3726e56b FMH |
266 | } |
267 | ||
fe9b0850 HS |
268 | static int das800_cancel(struct comedi_device *dev, struct comedi_subdevice *s) |
269 | { | |
57d1ebf7 | 270 | das800_disable(dev); |
fe9b0850 HS |
271 | return 0; |
272 | } | |
273 | ||
1626657f HS |
274 | static int das800_ai_check_chanlist(struct comedi_device *dev, |
275 | struct comedi_subdevice *s, | |
276 | struct comedi_cmd *cmd) | |
277 | { | |
278 | unsigned int chan0 = CR_CHAN(cmd->chanlist[0]); | |
279 | unsigned int range0 = CR_RANGE(cmd->chanlist[0]); | |
280 | int i; | |
281 | ||
282 | for (i = 1; i < cmd->chanlist_len; i++) { | |
283 | unsigned int chan = CR_CHAN(cmd->chanlist[i]); | |
284 | unsigned int range = CR_RANGE(cmd->chanlist[i]); | |
285 | ||
286 | if (chan != (chan0 + i) % s->n_chan) { | |
287 | dev_dbg(dev->class_dev, | |
288 | "chanlist must be consecutive, counting upwards\n"); | |
289 | return -EINVAL; | |
290 | } | |
291 | ||
292 | if (range != range0) { | |
293 | dev_dbg(dev->class_dev, | |
294 | "chanlist must all have the same gain\n"); | |
295 | return -EINVAL; | |
296 | } | |
297 | } | |
298 | ||
299 | return 0; | |
300 | } | |
301 | ||
0a85b6f0 MT |
302 | static int das800_ai_do_cmdtest(struct comedi_device *dev, |
303 | struct comedi_subdevice *s, | |
304 | struct comedi_cmd *cmd) | |
3726e56b | 305 | { |
4f3aa186 | 306 | const struct das800_board *board = dev->board_ptr; |
3726e56b | 307 | int err = 0; |
3726e56b | 308 | |
27020ffe | 309 | /* Step 1 : check if triggers are trivially valid */ |
3726e56b | 310 | |
5519108b IA |
311 | err |= comedi_check_trigger_src(&cmd->start_src, TRIG_NOW | TRIG_EXT); |
312 | err |= comedi_check_trigger_src(&cmd->scan_begin_src, TRIG_FOLLOW); | |
313 | err |= comedi_check_trigger_src(&cmd->convert_src, | |
314 | TRIG_TIMER | TRIG_EXT); | |
315 | err |= comedi_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT); | |
316 | err |= comedi_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE); | |
3726e56b FMH |
317 | |
318 | if (err) | |
319 | return 1; | |
320 | ||
27020ffe | 321 | /* Step 2a : make sure trigger sources are unique */ |
3726e56b | 322 | |
5519108b IA |
323 | err |= comedi_check_trigger_is_unique(cmd->start_src); |
324 | err |= comedi_check_trigger_is_unique(cmd->convert_src); | |
325 | err |= comedi_check_trigger_is_unique(cmd->stop_src); | |
27020ffe HS |
326 | |
327 | /* Step 2b : and mutually compatible */ | |
3726e56b FMH |
328 | |
329 | if (err) | |
330 | return 2; | |
331 | ||
50b825ff | 332 | /* Step 3: check if arguments are trivially valid */ |
3726e56b | 333 | |
5519108b | 334 | err |= comedi_check_trigger_arg_is(&cmd->start_arg, 0); |
50b825ff | 335 | |
5519108b IA |
336 | if (cmd->convert_src == TRIG_TIMER) { |
337 | err |= comedi_check_trigger_arg_min(&cmd->convert_arg, | |
4f3aa186 | 338 | board->ai_speed); |
5519108b | 339 | } |
50b825ff | 340 | |
5519108b IA |
341 | err |= comedi_check_trigger_arg_min(&cmd->chanlist_len, 1); |
342 | err |= comedi_check_trigger_arg_is(&cmd->scan_end_arg, | |
343 | cmd->chanlist_len); | |
50b825ff HS |
344 | |
345 | if (cmd->stop_src == TRIG_COUNT) | |
5519108b | 346 | err |= comedi_check_trigger_arg_min(&cmd->stop_arg, 1); |
50b825ff | 347 | else /* TRIG_NONE */ |
5519108b | 348 | err |= comedi_check_trigger_arg_is(&cmd->stop_arg, 0); |
3726e56b FMH |
349 | |
350 | if (err) | |
351 | return 3; | |
352 | ||
353 | /* step 4: fix up any arguments */ | |
354 | ||
355 | if (cmd->convert_src == TRIG_TIMER) { | |
e4690dec HS |
356 | unsigned int arg = cmd->convert_arg; |
357 | ||
358 | comedi_8254_cascade_ns_to_timer(dev->pacer, &arg, cmd->flags); | |
5519108b | 359 | err |= comedi_check_trigger_arg_is(&cmd->convert_arg, arg); |
3726e56b FMH |
360 | } |
361 | ||
362 | if (err) | |
363 | return 4; | |
364 | ||
1626657f HS |
365 | /* Step 5: check channel list if it exists */ |
366 | if (cmd->chanlist && cmd->chanlist_len > 0) | |
367 | err |= das800_ai_check_chanlist(dev, s, cmd); | |
3726e56b FMH |
368 | |
369 | if (err) | |
370 | return 5; | |
371 | ||
372 | return 0; | |
373 | } | |
374 | ||
0a85b6f0 MT |
375 | static int das800_ai_do_cmd(struct comedi_device *dev, |
376 | struct comedi_subdevice *s) | |
3726e56b | 377 | { |
4f3aa186 | 378 | const struct das800_board *board = dev->board_ptr; |
d24160f8 | 379 | struct comedi_async *async = s->async; |
8ffffae6 HS |
380 | struct comedi_cmd *cmd = &async->cmd; |
381 | unsigned int gain = CR_RANGE(cmd->chanlist[0]); | |
382 | unsigned int start_chan = CR_CHAN(cmd->chanlist[0]); | |
383 | unsigned int end_chan = (start_chan + cmd->chanlist_len - 1) % 8; | |
d24160f8 | 384 | unsigned int scan_chans = (end_chan << 3) | start_chan; |
3726e56b FMH |
385 | int conv_bits; |
386 | unsigned long irq_flags; | |
3726e56b | 387 | |
57d1ebf7 | 388 | das800_disable(dev); |
3726e56b | 389 | |
5f74ea14 | 390 | spin_lock_irqsave(&dev->spinlock, irq_flags); |
0a8fc089 | 391 | /* set scan limits */ |
d24160f8 | 392 | das800_ind_write(dev, scan_chans, SCAN_LIMITS); |
5f74ea14 | 393 | spin_unlock_irqrestore(&dev->spinlock, irq_flags); |
3726e56b FMH |
394 | |
395 | /* set gain */ | |
4f3aa186 | 396 | if (board->resolution == 12 && gain > 0) |
3726e56b FMH |
397 | gain += 0x7; |
398 | gain &= 0xf; | |
399 | outb(gain, dev->iobase + DAS800_GAIN); | |
400 | ||
3726e56b FMH |
401 | /* enable auto channel scan, send interrupts on end of conversion |
402 | * and set clock source to internal or external | |
403 | */ | |
404 | conv_bits = 0; | |
405 | conv_bits |= EACS | IEOC; | |
8ffffae6 | 406 | if (cmd->start_src == TRIG_EXT) |
3726e56b | 407 | conv_bits |= DTEN; |
8ffffae6 | 408 | if (cmd->convert_src == TRIG_TIMER) { |
3726e56b | 409 | conv_bits |= CASC | ITE; |
e4690dec HS |
410 | comedi_8254_update_divisors(dev->pacer); |
411 | comedi_8254_pacer_enable(dev->pacer, 1, 2, true); | |
3726e56b FMH |
412 | } |
413 | ||
5f74ea14 | 414 | spin_lock_irqsave(&dev->spinlock, irq_flags); |
0a8fc089 | 415 | das800_ind_write(dev, conv_bits, CONV_CONTROL); |
5f74ea14 | 416 | spin_unlock_irqrestore(&dev->spinlock, irq_flags); |
0a8fc089 | 417 | |
57d1ebf7 | 418 | das800_enable(dev); |
3726e56b FMH |
419 | return 0; |
420 | } | |
421 | ||
b4780a3a HS |
422 | static unsigned int das800_ai_get_sample(struct comedi_device *dev) |
423 | { | |
424 | unsigned int lsb = inb(dev->iobase + DAS800_LSB); | |
425 | unsigned int msb = inb(dev->iobase + DAS800_MSB); | |
426 | ||
427 | return (msb << 8) | lsb; | |
428 | } | |
429 | ||
fe9b0850 HS |
430 | static irqreturn_t das800_interrupt(int irq, void *d) |
431 | { | |
fe9b0850 | 432 | struct comedi_device *dev = d; |
fe9b0850 | 433 | struct das800_private *devpriv = dev->private; |
7f340859 | 434 | struct comedi_subdevice *s = dev->read_subdev; |
9dad12fe HS |
435 | struct comedi_async *async; |
436 | struct comedi_cmd *cmd; | |
fe9b0850 | 437 | unsigned long irq_flags; |
7f340859 HS |
438 | unsigned int status; |
439 | unsigned int val; | |
440 | bool fifo_empty; | |
441 | bool fifo_overflow; | |
442 | int i; | |
fe9b0850 HS |
443 | |
444 | status = inb(dev->iobase + DAS800_STATUS); | |
fe9b0850 HS |
445 | if (!(status & IRQ)) |
446 | return IRQ_NONE; | |
7f340859 | 447 | if (!dev->attached) |
fe9b0850 HS |
448 | return IRQ_HANDLED; |
449 | ||
9dad12fe HS |
450 | async = s->async; |
451 | cmd = &async->cmd; | |
452 | ||
fe9b0850 | 453 | spin_lock_irqsave(&dev->spinlock, irq_flags); |
0a8fc089 | 454 | status = das800_ind_read(dev, CONTROL1) & STATUS2_HCEN; |
7f340859 HS |
455 | /* |
456 | * Don't release spinlock yet since we want to make sure | |
457 | * no one else disables hardware conversions. | |
458 | */ | |
459 | ||
460 | /* if hardware conversions are not enabled, then quit */ | |
fe9b0850 HS |
461 | if (status == 0) { |
462 | spin_unlock_irqrestore(&dev->spinlock, irq_flags); | |
463 | return IRQ_HANDLED; | |
464 | } | |
465 | ||
7f340859 HS |
466 | for (i = 0; i < DAS802_16_HALF_FIFO_SZ; i++) { |
467 | val = das800_ai_get_sample(dev); | |
468 | if (s->maxdata == 0x0fff) { | |
469 | fifo_empty = !!(val & FIFO_EMPTY); | |
470 | fifo_overflow = !!(val & FIFO_OVF); | |
fe9b0850 | 471 | } else { |
7f340859 HS |
472 | /* cio-das802/16 has no fifo empty status bit */ |
473 | fifo_empty = false; | |
474 | fifo_overflow = !!(inb(dev->iobase + DAS800_GAIN) & | |
475 | CIO_FFOV); | |
fe9b0850 | 476 | } |
7f340859 | 477 | if (fifo_empty || fifo_overflow) |
fe9b0850 | 478 | break; |
7f340859 HS |
479 | |
480 | if (s->maxdata == 0x0fff) | |
481 | val >>= 4; /* 12-bit sample */ | |
482 | ||
5e62863a HS |
483 | val &= s->maxdata; |
484 | comedi_buf_write_samples(s, &val, 1); | |
485 | ||
486 | if (cmd->stop_src == TRIG_COUNT && | |
487 | async->scans_done >= cmd->stop_arg) { | |
488 | async->events |= COMEDI_CB_EOA; | |
489 | break; | |
fe9b0850 HS |
490 | } |
491 | } | |
7f340859 | 492 | |
fe9b0850 HS |
493 | if (fifo_overflow) { |
494 | spin_unlock_irqrestore(&dev->spinlock, irq_flags); | |
3e6cb74f | 495 | async->events |= COMEDI_CB_ERROR; |
837a1264 | 496 | comedi_handle_events(dev, s); |
fe9b0850 HS |
497 | return IRQ_HANDLED; |
498 | } | |
7f340859 | 499 | |
5e62863a HS |
500 | if (!(async->events & COMEDI_CB_CANCEL_MASK)) { |
501 | /* | |
502 | * Re-enable card's interrupt. | |
503 | * We already have spinlock, so indirect addressing is safe | |
504 | */ | |
0a8fc089 HS |
505 | das800_ind_write(dev, CONTROL1_INTE | devpriv->do_bits, |
506 | CONTROL1); | |
fe9b0850 | 507 | spin_unlock_irqrestore(&dev->spinlock, irq_flags); |
fe9b0850 | 508 | } else { |
7f340859 | 509 | /* otherwise, stop taking data */ |
fe9b0850 | 510 | spin_unlock_irqrestore(&dev->spinlock, irq_flags); |
57d1ebf7 | 511 | das800_disable(dev); |
fe9b0850 | 512 | } |
837a1264 | 513 | comedi_handle_events(dev, s); |
fe9b0850 HS |
514 | return IRQ_HANDLED; |
515 | } | |
516 | ||
90bc68ec HS |
517 | static int das800_ai_eoc(struct comedi_device *dev, |
518 | struct comedi_subdevice *s, | |
519 | struct comedi_insn *insn, | |
520 | unsigned long context) | |
b4780a3a | 521 | { |
90bc68ec | 522 | unsigned int status; |
b4780a3a | 523 | |
90bc68ec HS |
524 | status = inb(dev->iobase + DAS800_STATUS); |
525 | if ((status & BUSY) == 0) | |
526 | return 0; | |
527 | return -EBUSY; | |
b4780a3a HS |
528 | } |
529 | ||
d7427345 HS |
530 | static int das800_ai_insn_read(struct comedi_device *dev, |
531 | struct comedi_subdevice *s, | |
532 | struct comedi_insn *insn, | |
533 | unsigned int *data) | |
3726e56b | 534 | { |
9a1a6cf8 | 535 | struct das800_private *devpriv = dev->private; |
b4780a3a HS |
536 | unsigned int chan = CR_CHAN(insn->chanspec); |
537 | unsigned int range = CR_RANGE(insn->chanspec); | |
3726e56b | 538 | unsigned long irq_flags; |
b4780a3a HS |
539 | unsigned int val; |
540 | int ret; | |
541 | int i; | |
3726e56b | 542 | |
57d1ebf7 | 543 | das800_disable(dev); |
3726e56b FMH |
544 | |
545 | /* set multiplexer */ | |
5f74ea14 | 546 | spin_lock_irqsave(&dev->spinlock, irq_flags); |
0a8fc089 | 547 | das800_ind_write(dev, chan | devpriv->do_bits, CONTROL1); |
5f74ea14 | 548 | spin_unlock_irqrestore(&dev->spinlock, irq_flags); |
3726e56b FMH |
549 | |
550 | /* set gain / range */ | |
b4780a3a | 551 | if (s->maxdata == 0x0fff && range) |
3726e56b FMH |
552 | range += 0x7; |
553 | range &= 0xf; | |
554 | outb(range, dev->iobase + DAS800_GAIN); | |
555 | ||
5f74ea14 | 556 | udelay(5); |
3726e56b | 557 | |
b4780a3a | 558 | for (i = 0; i < insn->n; i++) { |
3726e56b FMH |
559 | /* trigger conversion */ |
560 | outb_p(0, dev->iobase + DAS800_MSB); | |
561 | ||
90bc68ec | 562 | ret = comedi_timeout(dev, s, insn, das800_ai_eoc, 0); |
b4780a3a HS |
563 | if (ret) |
564 | return ret; | |
565 | ||
566 | val = das800_ai_get_sample(dev); | |
567 | if (s->maxdata == 0x0fff) | |
568 | val >>= 4; /* 12-bit sample */ | |
569 | data[i] = val & s->maxdata; | |
3726e56b FMH |
570 | } |
571 | ||
b4780a3a | 572 | return insn->n; |
3726e56b FMH |
573 | } |
574 | ||
d7427345 HS |
575 | static int das800_di_insn_bits(struct comedi_device *dev, |
576 | struct comedi_subdevice *s, | |
577 | struct comedi_insn *insn, | |
578 | unsigned int *data) | |
3726e56b | 579 | { |
e245b6d1 | 580 | data[1] = (inb(dev->iobase + DAS800_STATUS) >> 4) & 0x7; |
3726e56b | 581 | |
a2714e3e | 582 | return insn->n; |
3726e56b FMH |
583 | } |
584 | ||
d7427345 HS |
585 | static int das800_do_insn_bits(struct comedi_device *dev, |
586 | struct comedi_subdevice *s, | |
587 | struct comedi_insn *insn, | |
588 | unsigned int *data) | |
3726e56b | 589 | { |
9a1a6cf8 | 590 | struct das800_private *devpriv = dev->private; |
3726e56b FMH |
591 | unsigned long irq_flags; |
592 | ||
97f4289a | 593 | if (comedi_dio_update_state(s, data)) { |
26234771 | 594 | devpriv->do_bits = s->state << 4; |
3726e56b | 595 | |
26234771 HS |
596 | spin_lock_irqsave(&dev->spinlock, irq_flags); |
597 | das800_ind_write(dev, CONTROL1_INTE | devpriv->do_bits, | |
598 | CONTROL1); | |
599 | spin_unlock_irqrestore(&dev->spinlock, irq_flags); | |
600 | } | |
3726e56b | 601 | |
26234771 | 602 | data[1] = s->state; |
3726e56b | 603 | |
a2714e3e | 604 | return insn->n; |
3726e56b FMH |
605 | } |
606 | ||
a69153f6 | 607 | static const struct das800_board *das800_probe(struct comedi_device *dev) |
4f71ceeb | 608 | { |
4f3aa186 HS |
609 | const struct das800_board *board = dev->board_ptr; |
610 | int index = board ? board - das800_boards : -EINVAL; | |
4f71ceeb HS |
611 | int id_bits; |
612 | unsigned long irq_flags; | |
4f71ceeb | 613 | |
a69153f6 HS |
614 | /* |
615 | * The dev->board_ptr will be set by comedi_device_attach() if the | |
616 | * board name provided by the user matches a board->name in this | |
617 | * driver. If so, this function sanity checks the id_bits to verify | |
618 | * that the board is correct. | |
619 | * | |
620 | * If the dev->board_ptr is not set, the user is trying to attach | |
621 | * an unspecified board to this driver. In this case the id_bits | |
622 | * are used to 'probe' for the correct dev->board_ptr. | |
623 | */ | |
4f71ceeb | 624 | spin_lock_irqsave(&dev->spinlock, irq_flags); |
0a8fc089 | 625 | id_bits = das800_ind_read(dev, ID) & 0x3; |
4f71ceeb HS |
626 | spin_unlock_irqrestore(&dev->spinlock, irq_flags); |
627 | ||
4f71ceeb HS |
628 | switch (id_bits) { |
629 | case 0x0: | |
a69153f6 | 630 | if (index == BOARD_DAS800 || index == BOARD_CIODAS800) |
4f3aa186 | 631 | return board; |
a69153f6 | 632 | index = BOARD_DAS800; |
4f71ceeb HS |
633 | break; |
634 | case 0x2: | |
a69153f6 | 635 | if (index == BOARD_DAS801 || index == BOARD_CIODAS801) |
4f3aa186 | 636 | return board; |
a69153f6 | 637 | index = BOARD_DAS801; |
4f71ceeb HS |
638 | break; |
639 | case 0x3: | |
a69153f6 HS |
640 | if (index == BOARD_DAS802 || index == BOARD_CIODAS802 || |
641 | index == BOARD_CIODAS80216) | |
4f3aa186 | 642 | return board; |
a69153f6 | 643 | index = BOARD_DAS802; |
4f71ceeb HS |
644 | break; |
645 | default: | |
c1a59171 | 646 | dev_dbg(dev->class_dev, "Board model: 0x%x (unknown)\n", |
4f71ceeb | 647 | id_bits); |
a69153f6 | 648 | return NULL; |
4f71ceeb | 649 | } |
a69153f6 HS |
650 | dev_dbg(dev->class_dev, "Board model (probed): %s series\n", |
651 | das800_boards[index].name); | |
652 | ||
653 | return &das800_boards[index]; | |
4f71ceeb HS |
654 | } |
655 | ||
92046ae4 HS |
656 | static int das800_attach(struct comedi_device *dev, struct comedi_devconfig *it) |
657 | { | |
4f3aa186 | 658 | const struct das800_board *board; |
92046ae4 HS |
659 | struct das800_private *devpriv; |
660 | struct comedi_subdevice *s; | |
661 | unsigned int irq = it->options[1]; | |
662 | unsigned long irq_flags; | |
92046ae4 HS |
663 | int ret; |
664 | ||
0bdab509 | 665 | devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv)); |
92046ae4 HS |
666 | if (!devpriv) |
667 | return -ENOMEM; | |
92046ae4 | 668 | |
862755ec | 669 | ret = comedi_request_region(dev, it->options[0], 0x8); |
92046ae4 HS |
670 | if (ret) |
671 | return ret; | |
672 | ||
4f3aa186 HS |
673 | board = das800_probe(dev); |
674 | if (!board) | |
92046ae4 | 675 | return -ENODEV; |
4f3aa186 HS |
676 | dev->board_ptr = board; |
677 | dev->board_name = board->name; | |
92046ae4 | 678 | |
f05ffb6e HS |
679 | if (irq > 1 && irq <= 7) { |
680 | ret = request_irq(irq, das800_interrupt, 0, dev->board_name, | |
681 | dev); | |
682 | if (ret == 0) | |
683 | dev->irq = irq; | |
92046ae4 | 684 | } |
92046ae4 | 685 | |
e4690dec HS |
686 | dev->pacer = comedi_8254_init(dev->iobase + DAS800_8254, |
687 | I8254_OSC_BASE_1MHZ, I8254_IO8, 0); | |
688 | if (!dev->pacer) | |
689 | return -ENOMEM; | |
690 | ||
92046ae4 HS |
691 | ret = comedi_alloc_subdevices(dev, 3); |
692 | if (ret) | |
693 | return ret; | |
694 | ||
d7427345 | 695 | /* Analog Input subdevice */ |
92046ae4 HS |
696 | s = &dev->subdevices[0]; |
697 | dev->read_subdev = s; | |
77630119 HS |
698 | s->type = COMEDI_SUBD_AI; |
699 | s->subdev_flags = SDF_READABLE | SDF_GROUND; | |
700 | s->n_chan = 8; | |
4f3aa186 HS |
701 | s->maxdata = (1 << board->resolution) - 1; |
702 | s->range_table = board->ai_range; | |
d7427345 | 703 | s->insn_read = das800_ai_insn_read; |
77630119 HS |
704 | if (dev->irq) { |
705 | s->subdev_flags |= SDF_CMD_READ; | |
706 | s->len_chanlist = 8; | |
707 | s->do_cmdtest = das800_ai_do_cmdtest; | |
708 | s->do_cmd = das800_ai_do_cmd; | |
709 | s->cancel = das800_cancel; | |
710 | } | |
92046ae4 | 711 | |
d7427345 | 712 | /* Digital Input subdevice */ |
92046ae4 | 713 | s = &dev->subdevices[1]; |
d7427345 HS |
714 | s->type = COMEDI_SUBD_DI; |
715 | s->subdev_flags = SDF_READABLE; | |
716 | s->n_chan = 3; | |
717 | s->maxdata = 1; | |
718 | s->range_table = &range_digital; | |
719 | s->insn_bits = das800_di_insn_bits; | |
720 | ||
721 | /* Digital Output subdevice */ | |
92046ae4 | 722 | s = &dev->subdevices[2]; |
d7427345 | 723 | s->type = COMEDI_SUBD_DO; |
453fd2b3 | 724 | s->subdev_flags = SDF_WRITABLE; |
d7427345 HS |
725 | s->n_chan = 4; |
726 | s->maxdata = 1; | |
727 | s->range_table = &range_digital; | |
728 | s->insn_bits = das800_do_insn_bits; | |
92046ae4 | 729 | |
57d1ebf7 | 730 | das800_disable(dev); |
92046ae4 HS |
731 | |
732 | /* initialize digital out channels */ | |
733 | spin_lock_irqsave(&dev->spinlock, irq_flags); | |
0a8fc089 | 734 | das800_ind_write(dev, CONTROL1_INTE | devpriv->do_bits, CONTROL1); |
92046ae4 HS |
735 | spin_unlock_irqrestore(&dev->spinlock, irq_flags); |
736 | ||
737 | return 0; | |
738 | }; | |
739 | ||
79a8c0e2 HS |
740 | static struct comedi_driver driver_das800 = { |
741 | .driver_name = "das800", | |
742 | .module = THIS_MODULE, | |
743 | .attach = das800_attach, | |
744 | .detach = comedi_legacy_detach, | |
745 | .num_names = ARRAY_SIZE(das800_boards), | |
746 | .board_name = &das800_boards[0].name, | |
747 | .offset = sizeof(struct das800_board), | |
748 | }; | |
749 | module_comedi_driver(driver_das800); | |
750 | ||
90f703d3 AT |
751 | MODULE_AUTHOR("Comedi http://www.comedi.org"); |
752 | MODULE_DESCRIPTION("Comedi low-level driver"); | |
753 | MODULE_LICENSE("GPL"); |