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 the is adapted from the dummy_cs.c driver
23 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 = { 4, {
101 static irqreturn_t das16cs_interrupt(int irq, void *d)
103 /* struct comedi_device *dev = d; */
107 static int das16cs_ai_rinsn(struct comedi_device *dev,
108 struct comedi_subdevice *s,
109 struct comedi_insn *insn, unsigned int *data)
111 struct das16cs_private *devpriv = dev->private;
112 int chan = CR_CHAN(insn->chanspec);
113 int range = CR_RANGE(insn->chanspec);
114 int aref = CR_AREF(insn->chanspec);
118 outw(chan, dev->iobase + DAS16CS_DIO_MUX);
120 devpriv->status1 &= ~0xf320;
121 devpriv->status1 |= (aref == AREF_DIFF) ? 0 : 0x0020;
122 outw(devpriv->status1, dev->iobase + DAS16CS_MISC1);
124 devpriv->status2 &= ~0xff00;
127 devpriv->status2 |= 0x800;
130 devpriv->status2 |= 0x000;
133 devpriv->status2 |= 0x100;
136 devpriv->status2 |= 0x200;
141 outw(devpriv->status2, dev->iobase + DAS16CS_MISC2);
143 for (i = 0; i < insn->n; i++) {
144 outw(0, dev->iobase + DAS16CS_ADC_DATA);
147 for (to = 0; to < TIMEOUT; to++) {
148 if (inw(dev->iobase + DAS16CS_MISC1) & 0x0080)
152 dev_dbg(dev->class_dev, "cb_das16_cs: ai timeout\n");
155 data[i] = inw(dev->iobase + DAS16CS_ADC_DATA);
161 static int das16cs_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
166 static int das16cs_ai_cmdtest(struct comedi_device *dev,
167 struct comedi_subdevice *s,
168 struct comedi_cmd *cmd)
173 /* step 1: make sure trigger sources are trivially valid */
175 tmp = cmd->start_src;
176 cmd->start_src &= TRIG_NOW;
177 if (!cmd->start_src || tmp != cmd->start_src)
180 tmp = cmd->scan_begin_src;
181 cmd->scan_begin_src &= TRIG_TIMER | TRIG_EXT;
182 if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
185 tmp = cmd->convert_src;
186 cmd->convert_src &= TRIG_TIMER | TRIG_EXT;
187 if (!cmd->convert_src || tmp != cmd->convert_src)
190 tmp = cmd->scan_end_src;
191 cmd->scan_end_src &= TRIG_COUNT;
192 if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
196 cmd->stop_src &= TRIG_COUNT | TRIG_NONE;
197 if (!cmd->stop_src || tmp != cmd->stop_src)
203 /* step 2: make sure trigger sources are unique and
204 * mutually compatible */
206 /* note that mutual compatibility is not an issue here */
207 if (cmd->scan_begin_src != TRIG_TIMER &&
208 cmd->scan_begin_src != TRIG_EXT)
210 if (cmd->convert_src != TRIG_TIMER && cmd->convert_src != TRIG_EXT)
212 if (cmd->stop_src != TRIG_COUNT && cmd->stop_src != TRIG_NONE)
218 /* step 3: make sure arguments are trivially compatible */
220 if (cmd->start_arg != 0) {
224 #define MAX_SPEED 10000 /* in nanoseconds */
225 #define MIN_SPEED 1000000000 /* in nanoseconds */
227 if (cmd->scan_begin_src == TRIG_TIMER) {
228 if (cmd->scan_begin_arg < MAX_SPEED) {
229 cmd->scan_begin_arg = MAX_SPEED;
232 if (cmd->scan_begin_arg > MIN_SPEED) {
233 cmd->scan_begin_arg = MIN_SPEED;
237 /* external trigger */
238 /* should be level/edge, hi/lo specification here */
239 /* should specify multiple external triggers */
240 if (cmd->scan_begin_arg > 9) {
241 cmd->scan_begin_arg = 9;
245 if (cmd->convert_src == TRIG_TIMER) {
246 if (cmd->convert_arg < MAX_SPEED) {
247 cmd->convert_arg = MAX_SPEED;
250 if (cmd->convert_arg > MIN_SPEED) {
251 cmd->convert_arg = MIN_SPEED;
255 /* external trigger */
257 if (cmd->convert_arg > 9) {
258 cmd->convert_arg = 9;
263 if (cmd->scan_end_arg != cmd->chanlist_len) {
264 cmd->scan_end_arg = cmd->chanlist_len;
267 if (cmd->stop_src == TRIG_COUNT) {
268 if (cmd->stop_arg > 0x00ffffff) {
269 cmd->stop_arg = 0x00ffffff;
274 if (cmd->stop_arg != 0) {
283 /* step 4: fix up any arguments */
285 if (cmd->scan_begin_src == TRIG_TIMER) {
286 unsigned int div1 = 0, div2 = 0;
288 tmp = cmd->scan_begin_arg;
289 i8253_cascade_ns_to_timer(100, &div1, &div2,
290 &cmd->scan_begin_arg,
291 cmd->flags & TRIG_ROUND_MASK);
292 if (tmp != cmd->scan_begin_arg)
295 if (cmd->convert_src == TRIG_TIMER) {
296 unsigned int div1 = 0, div2 = 0;
298 tmp = cmd->convert_arg;
299 i8253_cascade_ns_to_timer(100, &div1, &div2,
300 &cmd->scan_begin_arg,
301 cmd->flags & TRIG_ROUND_MASK);
302 if (tmp != cmd->convert_arg)
304 if (cmd->scan_begin_src == TRIG_TIMER &&
305 cmd->scan_begin_arg <
306 cmd->convert_arg * cmd->scan_end_arg) {
307 cmd->scan_begin_arg =
308 cmd->convert_arg * cmd->scan_end_arg;
319 static int das16cs_ao_winsn(struct comedi_device *dev,
320 struct comedi_subdevice *s,
321 struct comedi_insn *insn, unsigned int *data)
323 struct das16cs_private *devpriv = dev->private;
325 int chan = CR_CHAN(insn->chanspec);
326 unsigned short status1;
330 for (i = 0; i < insn->n; i++) {
331 devpriv->ao_readback[chan] = data[i];
334 outw(devpriv->status1, dev->iobase + DAS16CS_MISC1);
337 status1 = devpriv->status1 & ~0xf;
343 /* printk("0x%04x\n",status1);*/
344 outw(status1, dev->iobase + DAS16CS_MISC1);
347 for (bit = 15; bit >= 0; bit--) {
348 int b = (d >> bit) & 0x1;
350 /* printk("0x%04x\n",status1 | b | 0x0000);*/
351 outw(status1 | b | 0x0000, dev->iobase + DAS16CS_MISC1);
353 /* printk("0x%04x\n",status1 | b | 0x0004);*/
354 outw(status1 | b | 0x0004, dev->iobase + DAS16CS_MISC1);
357 /* make high both DAC0CS and DAC1CS to load
358 new data and update analog output*/
359 outw(status1 | 0x9, dev->iobase + DAS16CS_MISC1);
365 static int das16cs_ao_rinsn(struct comedi_device *dev,
366 struct comedi_subdevice *s,
367 struct comedi_insn *insn, unsigned int *data)
369 struct das16cs_private *devpriv = dev->private;
371 int chan = CR_CHAN(insn->chanspec);
373 for (i = 0; i < insn->n; i++)
374 data[i] = devpriv->ao_readback[chan];
379 static int das16cs_dio_insn_bits(struct comedi_device *dev,
380 struct comedi_subdevice *s,
381 struct comedi_insn *insn, unsigned int *data)
384 s->state &= ~data[0];
385 s->state |= data[0] & data[1];
387 outw(s->state, dev->iobase + DAS16CS_DIO);
390 data[1] = inw(dev->iobase + DAS16CS_DIO);
395 static int das16cs_dio_insn_config(struct comedi_device *dev,
396 struct comedi_subdevice *s,
397 struct comedi_insn *insn, unsigned int *data)
399 struct das16cs_private *devpriv = dev->private;
400 int chan = CR_CHAN(insn->chanspec);
409 case INSN_CONFIG_DIO_OUTPUT:
412 case INSN_CONFIG_DIO_INPUT:
415 case INSN_CONFIG_DIO_QUERY:
417 (s->io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
425 devpriv->status2 &= ~0x00c0;
426 devpriv->status2 |= (s->io_bits & 0xf0) ? 0x0080 : 0;
427 devpriv->status2 |= (s->io_bits & 0x0f) ? 0x0040 : 0;
429 outw(devpriv->status2, dev->iobase + DAS16CS_MISC2);
434 static const struct das16cs_board *das16cs_probe(struct comedi_device *dev,
435 struct pcmcia_device *link)
439 for (i = 0; i < ARRAY_SIZE(das16cs_boards); i++) {
440 if (das16cs_boards[i].device_id == link->card_id)
441 return das16cs_boards + i;
444 dev_dbg(dev->class_dev, "unknown board!\n");
449 static int das16cs_attach(struct comedi_device *dev,
450 struct comedi_devconfig *it)
452 const struct das16cs_board *thisboard;
453 struct pcmcia_device *link;
454 struct comedi_subdevice *s;
457 link = cur_dev; /* XXX hack */
461 dev->board_ptr = das16cs_probe(dev, link);
464 thisboard = comedi_board(dev);
466 dev->board_name = thisboard->name;
468 dev->iobase = link->resource[0]->start;
470 ret = request_irq(link->irq, das16cs_interrupt,
471 IRQF_SHARED, "cb_das16_cs", dev);
474 dev->irq = link->irq;
476 if (alloc_private(dev, sizeof(struct das16cs_private)) < 0)
479 ret = comedi_alloc_subdevices(dev, 3);
483 s = dev->subdevices + 0;
484 dev->read_subdev = s;
485 /* analog input subdevice */
486 s->type = COMEDI_SUBD_AI;
487 s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF | SDF_CMD_READ;
490 s->range_table = &das16cs_ai_range;
491 s->len_chanlist = 16;
492 s->insn_read = das16cs_ai_rinsn;
493 s->do_cmd = das16cs_ai_cmd;
494 s->do_cmdtest = das16cs_ai_cmdtest;
496 s = dev->subdevices + 1;
497 /* analog output subdevice */
498 if (thisboard->n_ao_chans) {
499 s->type = COMEDI_SUBD_AO;
500 s->subdev_flags = SDF_WRITABLE;
501 s->n_chan = thisboard->n_ao_chans;
503 s->range_table = &range_bipolar10;
504 s->insn_write = &das16cs_ao_winsn;
505 s->insn_read = &das16cs_ao_rinsn;
507 s->type = COMEDI_SUBD_UNUSED;
510 s = dev->subdevices + 2;
511 /* digital i/o subdevice */
512 s->type = COMEDI_SUBD_DIO;
513 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
516 s->range_table = &range_digital;
517 s->insn_bits = das16cs_dio_insn_bits;
518 s->insn_config = das16cs_dio_insn_config;
520 dev_info(dev->class_dev, "%s: %s, I/O base=0x%04lx, irq=%u\n",
521 dev->driver->driver_name, dev->board_name,
522 dev->iobase, dev->irq);
527 static void das16cs_detach(struct comedi_device *dev)
530 free_irq(dev->irq, dev);
533 static struct comedi_driver driver_das16cs = {
534 .driver_name = "cb_das16_cs",
535 .module = THIS_MODULE,
536 .attach = das16cs_attach,
537 .detach = das16cs_detach,
540 static int das16cs_pcmcia_config_loop(struct pcmcia_device *p_dev,
543 if (p_dev->config_index == 0)
546 return pcmcia_request_io(p_dev);
549 static int das16cs_pcmcia_attach(struct pcmcia_device *link)
553 /* Do we need to allocate an interrupt? */
554 link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
556 ret = pcmcia_loop_config(link, das16cs_pcmcia_config_loop, NULL);
563 ret = pcmcia_enable_device(link);
571 pcmcia_disable_device(link);
575 static void das16cs_pcmcia_detach(struct pcmcia_device *link)
577 pcmcia_disable_device(link);
581 static const struct pcmcia_device_id das16cs_id_table[] = {
582 PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x0039),
583 PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x4009),
586 MODULE_DEVICE_TABLE(pcmcia, das16cs_id_table);
588 static struct pcmcia_driver das16cs_driver = {
589 .name = "cb_das16_cs",
590 .owner = THIS_MODULE,
591 .probe = das16cs_pcmcia_attach,
592 .remove = das16cs_pcmcia_detach,
593 .id_table = das16cs_id_table,
596 static int __init das16cs_init(void)
600 ret = comedi_driver_register(&driver_das16cs);
604 ret = pcmcia_register_driver(&das16cs_driver);
606 comedi_driver_unregister(&driver_das16cs);
612 module_init(das16cs_init);
614 static void __exit das16cs_exit(void)
616 pcmcia_unregister_driver(&das16cs_driver);
617 comedi_driver_unregister(&driver_das16cs);
619 module_exit(das16cs_exit);
621 MODULE_AUTHOR("David A. Schleef <ds@schleef.org>");
622 MODULE_DESCRIPTION("Comedi driver for Computer Boards PC-CARD DAS16/16");
623 MODULE_LICENSE("GPL");