2 comedi/drivers/das16cs.c
3 Driver for Computer Boards PC-CARD DAS16/16.
5 COMEDI - Linux Control and Measurement Device Interface
6 Copyright (C) 2000, 2001, 2002 David A. Schleef <ds@schleef.org>
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 PCMCIA support code for this driver is adapted from the dummy_cs.c
23 driver of the Linux PCMCIA Card Services package.
25 The initial developer of the original code is David A. Hinds
26 <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
27 are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
32 Description: Computer Boards PC-CARD DAS16/16
33 Devices: [ComputerBoards] PC-CARD DAS16/16 (cb_das16_cs), PC-CARD DAS16/16-AO
35 Updated: Mon, 04 Nov 2002 20:04:21 -0800
41 #include <linux/interrupt.h>
42 #include <linux/slab.h>
43 #include "../comedidev.h"
44 #include <linux/delay.h>
46 #include <pcmcia/cistpl.h>
47 #include <pcmcia/ds.h>
51 #define DAS16CS_SIZE 18
53 #define DAS16CS_ADC_DATA 0
54 #define DAS16CS_DIO_MUX 2
55 #define DAS16CS_MISC1 4
56 #define DAS16CS_MISC2 6
57 #define DAS16CS_CTR0 8
58 #define DAS16CS_CTR1 10
59 #define DAS16CS_CTR2 12
60 #define DAS16CS_CTR_CONTROL 14
61 #define DAS16CS_DIO 16
63 struct das16cs_board {
69 static const struct das16cs_board das16cs_boards[] = {
71 .name = "PC-CARD DAS16/16-AO",
75 .name = "PCM-DAS16s/16",
79 .name = "PC-CARD DAS16/16",
80 .device_id = 0x0000, /* unknown */
85 struct das16cs_private {
86 unsigned int ao_readback[2];
87 unsigned short status1;
88 unsigned short status2;
91 static struct pcmcia_device *cur_dev;
93 static const struct comedi_lrange das16cs_ai_range = {
102 static irqreturn_t das16cs_interrupt(int irq, void *d)
104 /* struct comedi_device *dev = d; */
108 static int das16cs_ai_rinsn(struct comedi_device *dev,
109 struct comedi_subdevice *s,
110 struct comedi_insn *insn, unsigned int *data)
112 struct das16cs_private *devpriv = dev->private;
113 int chan = CR_CHAN(insn->chanspec);
114 int range = CR_RANGE(insn->chanspec);
115 int aref = CR_AREF(insn->chanspec);
119 outw(chan, dev->iobase + DAS16CS_DIO_MUX);
121 devpriv->status1 &= ~0xf320;
122 devpriv->status1 |= (aref == AREF_DIFF) ? 0 : 0x0020;
123 outw(devpriv->status1, dev->iobase + DAS16CS_MISC1);
125 devpriv->status2 &= ~0xff00;
128 devpriv->status2 |= 0x800;
131 devpriv->status2 |= 0x000;
134 devpriv->status2 |= 0x100;
137 devpriv->status2 |= 0x200;
140 outw(devpriv->status2, dev->iobase + DAS16CS_MISC2);
142 for (i = 0; i < insn->n; i++) {
143 outw(0, dev->iobase + DAS16CS_ADC_DATA);
146 for (to = 0; to < TIMEOUT; to++) {
147 if (inw(dev->iobase + DAS16CS_MISC1) & 0x0080)
151 dev_dbg(dev->class_dev, "cb_das16_cs: ai timeout\n");
154 data[i] = inw(dev->iobase + DAS16CS_ADC_DATA);
160 static int das16cs_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
165 static int das16cs_ai_cmdtest(struct comedi_device *dev,
166 struct comedi_subdevice *s,
167 struct comedi_cmd *cmd)
172 /* step 1: make sure trigger sources are trivially valid */
174 tmp = cmd->start_src;
175 cmd->start_src &= TRIG_NOW;
176 if (!cmd->start_src || tmp != cmd->start_src)
179 tmp = cmd->scan_begin_src;
180 cmd->scan_begin_src &= TRIG_TIMER | TRIG_EXT;
181 if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
184 tmp = cmd->convert_src;
185 cmd->convert_src &= TRIG_TIMER | TRIG_EXT;
186 if (!cmd->convert_src || tmp != cmd->convert_src)
189 tmp = cmd->scan_end_src;
190 cmd->scan_end_src &= TRIG_COUNT;
191 if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
195 cmd->stop_src &= TRIG_COUNT | TRIG_NONE;
196 if (!cmd->stop_src || tmp != cmd->stop_src)
202 /* step 2: make sure trigger sources are unique and
203 * mutually compatible */
205 /* note that mutual compatibility is not an issue here */
206 if (cmd->scan_begin_src != TRIG_TIMER &&
207 cmd->scan_begin_src != TRIG_EXT)
209 if (cmd->convert_src != TRIG_TIMER && cmd->convert_src != TRIG_EXT)
211 if (cmd->stop_src != TRIG_COUNT && cmd->stop_src != TRIG_NONE)
217 /* step 3: make sure arguments are trivially compatible */
219 if (cmd->start_arg != 0) {
223 #define MAX_SPEED 10000 /* in nanoseconds */
224 #define MIN_SPEED 1000000000 /* in nanoseconds */
226 if (cmd->scan_begin_src == TRIG_TIMER) {
227 if (cmd->scan_begin_arg < MAX_SPEED) {
228 cmd->scan_begin_arg = MAX_SPEED;
231 if (cmd->scan_begin_arg > MIN_SPEED) {
232 cmd->scan_begin_arg = MIN_SPEED;
236 /* external trigger */
237 /* should be level/edge, hi/lo specification here */
238 /* should specify multiple external triggers */
239 if (cmd->scan_begin_arg > 9) {
240 cmd->scan_begin_arg = 9;
244 if (cmd->convert_src == TRIG_TIMER) {
245 if (cmd->convert_arg < MAX_SPEED) {
246 cmd->convert_arg = MAX_SPEED;
249 if (cmd->convert_arg > MIN_SPEED) {
250 cmd->convert_arg = MIN_SPEED;
254 /* external trigger */
256 if (cmd->convert_arg > 9) {
257 cmd->convert_arg = 9;
262 if (cmd->scan_end_arg != cmd->chanlist_len) {
263 cmd->scan_end_arg = cmd->chanlist_len;
266 if (cmd->stop_src == TRIG_COUNT) {
267 if (cmd->stop_arg > 0x00ffffff) {
268 cmd->stop_arg = 0x00ffffff;
273 if (cmd->stop_arg != 0) {
282 /* step 4: fix up any arguments */
284 if (cmd->scan_begin_src == TRIG_TIMER) {
285 unsigned int div1 = 0, div2 = 0;
287 tmp = cmd->scan_begin_arg;
288 i8253_cascade_ns_to_timer(100, &div1, &div2,
289 &cmd->scan_begin_arg,
290 cmd->flags & TRIG_ROUND_MASK);
291 if (tmp != cmd->scan_begin_arg)
294 if (cmd->convert_src == TRIG_TIMER) {
295 unsigned int div1 = 0, div2 = 0;
297 tmp = cmd->convert_arg;
298 i8253_cascade_ns_to_timer(100, &div1, &div2,
299 &cmd->scan_begin_arg,
300 cmd->flags & TRIG_ROUND_MASK);
301 if (tmp != cmd->convert_arg)
303 if (cmd->scan_begin_src == TRIG_TIMER &&
304 cmd->scan_begin_arg <
305 cmd->convert_arg * cmd->scan_end_arg) {
306 cmd->scan_begin_arg =
307 cmd->convert_arg * cmd->scan_end_arg;
318 static int das16cs_ao_winsn(struct comedi_device *dev,
319 struct comedi_subdevice *s,
320 struct comedi_insn *insn, unsigned int *data)
322 struct das16cs_private *devpriv = dev->private;
324 int chan = CR_CHAN(insn->chanspec);
325 unsigned short status1;
329 for (i = 0; i < insn->n; i++) {
330 devpriv->ao_readback[chan] = data[i];
333 outw(devpriv->status1, dev->iobase + DAS16CS_MISC1);
336 status1 = devpriv->status1 & ~0xf;
342 outw(status1, dev->iobase + DAS16CS_MISC1);
345 for (bit = 15; bit >= 0; bit--) {
346 int b = (d >> bit) & 0x1;
348 outw(status1 | b | 0x0000, dev->iobase + DAS16CS_MISC1);
350 outw(status1 | b | 0x0004, dev->iobase + DAS16CS_MISC1);
354 * Make both DAC0CS and DAC1CS high to load
355 * the new data and update analog the output
357 outw(status1 | 0x9, dev->iobase + DAS16CS_MISC1);
363 static int das16cs_ao_rinsn(struct comedi_device *dev,
364 struct comedi_subdevice *s,
365 struct comedi_insn *insn, unsigned int *data)
367 struct das16cs_private *devpriv = dev->private;
369 int chan = CR_CHAN(insn->chanspec);
371 for (i = 0; i < insn->n; i++)
372 data[i] = devpriv->ao_readback[chan];
377 static int das16cs_dio_insn_bits(struct comedi_device *dev,
378 struct comedi_subdevice *s,
379 struct comedi_insn *insn, unsigned int *data)
382 s->state &= ~data[0];
383 s->state |= data[0] & data[1];
385 outw(s->state, dev->iobase + DAS16CS_DIO);
388 data[1] = inw(dev->iobase + DAS16CS_DIO);
393 static int das16cs_dio_insn_config(struct comedi_device *dev,
394 struct comedi_subdevice *s,
395 struct comedi_insn *insn, unsigned int *data)
397 struct das16cs_private *devpriv = dev->private;
398 int chan = CR_CHAN(insn->chanspec);
407 case INSN_CONFIG_DIO_OUTPUT:
410 case INSN_CONFIG_DIO_INPUT:
413 case INSN_CONFIG_DIO_QUERY:
415 (s->io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
423 devpriv->status2 &= ~0x00c0;
424 devpriv->status2 |= (s->io_bits & 0xf0) ? 0x0080 : 0;
425 devpriv->status2 |= (s->io_bits & 0x0f) ? 0x0040 : 0;
427 outw(devpriv->status2, dev->iobase + DAS16CS_MISC2);
432 static const struct das16cs_board *das16cs_probe(struct comedi_device *dev,
433 struct pcmcia_device *link)
437 for (i = 0; i < ARRAY_SIZE(das16cs_boards); i++) {
438 if (das16cs_boards[i].device_id == link->card_id)
439 return das16cs_boards + i;
442 dev_dbg(dev->class_dev, "unknown board!\n");
447 static int das16cs_attach(struct comedi_device *dev,
448 struct comedi_devconfig *it)
450 const struct das16cs_board *thisboard;
451 struct pcmcia_device *link;
452 struct comedi_subdevice *s;
455 link = cur_dev; /* XXX hack */
459 dev->board_ptr = das16cs_probe(dev, link);
462 thisboard = comedi_board(dev);
464 dev->board_name = thisboard->name;
466 dev->iobase = link->resource[0]->start;
468 ret = request_irq(link->irq, das16cs_interrupt,
469 IRQF_SHARED, "cb_das16_cs", dev);
472 dev->irq = link->irq;
474 if (alloc_private(dev, sizeof(struct das16cs_private)) < 0)
477 ret = comedi_alloc_subdevices(dev, 3);
481 s = dev->subdevices + 0;
482 dev->read_subdev = s;
483 /* analog input subdevice */
484 s->type = COMEDI_SUBD_AI;
485 s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF | SDF_CMD_READ;
488 s->range_table = &das16cs_ai_range;
489 s->len_chanlist = 16;
490 s->insn_read = das16cs_ai_rinsn;
491 s->do_cmd = das16cs_ai_cmd;
492 s->do_cmdtest = das16cs_ai_cmdtest;
494 s = dev->subdevices + 1;
495 /* analog output subdevice */
496 if (thisboard->n_ao_chans) {
497 s->type = COMEDI_SUBD_AO;
498 s->subdev_flags = SDF_WRITABLE;
499 s->n_chan = thisboard->n_ao_chans;
501 s->range_table = &range_bipolar10;
502 s->insn_write = &das16cs_ao_winsn;
503 s->insn_read = &das16cs_ao_rinsn;
505 s->type = COMEDI_SUBD_UNUSED;
508 s = dev->subdevices + 2;
509 /* digital i/o subdevice */
510 s->type = COMEDI_SUBD_DIO;
511 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
514 s->range_table = &range_digital;
515 s->insn_bits = das16cs_dio_insn_bits;
516 s->insn_config = das16cs_dio_insn_config;
518 dev_info(dev->class_dev, "%s: %s, I/O base=0x%04lx, irq=%u\n",
519 dev->driver->driver_name, dev->board_name,
520 dev->iobase, dev->irq);
525 static void das16cs_detach(struct comedi_device *dev)
528 free_irq(dev->irq, dev);
531 static struct comedi_driver driver_das16cs = {
532 .driver_name = "cb_das16_cs",
533 .module = THIS_MODULE,
534 .attach = das16cs_attach,
535 .detach = das16cs_detach,
538 static int das16cs_pcmcia_config_loop(struct pcmcia_device *p_dev,
541 if (p_dev->config_index == 0)
544 return pcmcia_request_io(p_dev);
547 static int das16cs_pcmcia_attach(struct pcmcia_device *link)
551 /* Do we need to allocate an interrupt? */
552 link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
554 ret = pcmcia_loop_config(link, das16cs_pcmcia_config_loop, NULL);
561 ret = pcmcia_enable_device(link);
569 pcmcia_disable_device(link);
573 static void das16cs_pcmcia_detach(struct pcmcia_device *link)
575 pcmcia_disable_device(link);
579 static const struct pcmcia_device_id das16cs_id_table[] = {
580 PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x0039),
581 PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x4009),
584 MODULE_DEVICE_TABLE(pcmcia, das16cs_id_table);
586 static struct pcmcia_driver das16cs_driver = {
587 .name = "cb_das16_cs",
588 .owner = THIS_MODULE,
589 .probe = das16cs_pcmcia_attach,
590 .remove = das16cs_pcmcia_detach,
591 .id_table = das16cs_id_table,
594 static int __init das16cs_init(void)
598 ret = comedi_driver_register(&driver_das16cs);
602 ret = pcmcia_register_driver(&das16cs_driver);
604 comedi_driver_unregister(&driver_das16cs);
610 module_init(das16cs_init);
612 static void __exit das16cs_exit(void)
614 pcmcia_unregister_driver(&das16cs_driver);
615 comedi_driver_unregister(&driver_das16cs);
617 module_exit(das16cs_exit);
619 MODULE_AUTHOR("David A. Schleef <ds@schleef.org>");
620 MODULE_DESCRIPTION("Comedi driver for Computer Boards PC-CARD DAS16/16");
621 MODULE_LICENSE("GPL");