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 <linux/delay.h>
45 #include "../comedidev.h"
47 #include <pcmcia/cistpl.h>
48 #include <pcmcia/ds.h>
50 #include "comedi_fc.h"
53 #define DAS16CS_SIZE 18
55 #define DAS16CS_ADC_DATA 0
56 #define DAS16CS_DIO_MUX 2
57 #define DAS16CS_MISC1 4
58 #define DAS16CS_MISC2 6
59 #define DAS16CS_CTR0 8
60 #define DAS16CS_CTR1 10
61 #define DAS16CS_CTR2 12
62 #define DAS16CS_CTR_CONTROL 14
63 #define DAS16CS_DIO 16
65 struct das16cs_board {
71 static const struct das16cs_board das16cs_boards[] = {
73 .name = "PC-CARD DAS16/16-AO",
77 .name = "PCM-DAS16s/16",
81 .name = "PC-CARD DAS16/16",
82 .device_id = 0x0000, /* unknown */
87 struct das16cs_private {
88 unsigned int ao_readback[2];
89 unsigned short status1;
90 unsigned short status2;
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 : check if triggers are trivially valid */
174 err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW);
175 err |= cfc_check_trigger_src(&cmd->scan_begin_src,
176 TRIG_TIMER | TRIG_EXT);
177 err |= cfc_check_trigger_src(&cmd->convert_src,
178 TRIG_TIMER | TRIG_EXT);
179 err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
180 err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
185 /* Step 2a : make sure trigger sources are unique */
187 err |= cfc_check_trigger_is_unique(cmd->scan_begin_src);
188 err |= cfc_check_trigger_is_unique(cmd->convert_src);
189 err |= cfc_check_trigger_is_unique(cmd->stop_src);
191 /* Step 2b : and mutually compatible */
196 /* Step 3: check if arguments are trivially valid */
198 err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0);
200 #define MAX_SPEED 10000 /* in nanoseconds */
201 #define MIN_SPEED 1000000000 /* in nanoseconds */
203 if (cmd->scan_begin_src == TRIG_TIMER) {
204 err |= cfc_check_trigger_arg_min(&cmd->scan_begin_arg,
206 err |= cfc_check_trigger_arg_max(&cmd->scan_begin_arg,
209 /* external trigger */
210 /* should be level/edge, hi/lo specification here */
211 /* should specify multiple external triggers */
212 err |= cfc_check_trigger_arg_max(&cmd->scan_begin_arg, 9);
214 if (cmd->convert_src == TRIG_TIMER) {
215 err |= cfc_check_trigger_arg_min(&cmd->convert_arg,
217 err |= cfc_check_trigger_arg_max(&cmd->convert_arg,
220 /* external trigger */
222 err |= cfc_check_trigger_arg_max(&cmd->convert_arg, 9);
225 err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len);
227 if (cmd->stop_src == TRIG_COUNT)
228 err |= cfc_check_trigger_arg_max(&cmd->stop_arg, 0x00ffffff);
230 err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0);
235 /* step 4: fix up any arguments */
237 if (cmd->scan_begin_src == TRIG_TIMER) {
238 unsigned int div1 = 0, div2 = 0;
240 tmp = cmd->scan_begin_arg;
241 i8253_cascade_ns_to_timer(100, &div1, &div2,
242 &cmd->scan_begin_arg,
243 cmd->flags & TRIG_ROUND_MASK);
244 if (tmp != cmd->scan_begin_arg)
247 if (cmd->convert_src == TRIG_TIMER) {
248 unsigned int div1 = 0, div2 = 0;
250 tmp = cmd->convert_arg;
251 i8253_cascade_ns_to_timer(100, &div1, &div2,
252 &cmd->scan_begin_arg,
253 cmd->flags & TRIG_ROUND_MASK);
254 if (tmp != cmd->convert_arg)
256 if (cmd->scan_begin_src == TRIG_TIMER &&
257 cmd->scan_begin_arg <
258 cmd->convert_arg * cmd->scan_end_arg) {
259 cmd->scan_begin_arg =
260 cmd->convert_arg * cmd->scan_end_arg;
271 static int das16cs_ao_winsn(struct comedi_device *dev,
272 struct comedi_subdevice *s,
273 struct comedi_insn *insn, unsigned int *data)
275 struct das16cs_private *devpriv = dev->private;
277 int chan = CR_CHAN(insn->chanspec);
278 unsigned short status1;
282 for (i = 0; i < insn->n; i++) {
283 devpriv->ao_readback[chan] = data[i];
286 outw(devpriv->status1, dev->iobase + DAS16CS_MISC1);
289 status1 = devpriv->status1 & ~0xf;
295 outw(status1, dev->iobase + DAS16CS_MISC1);
298 for (bit = 15; bit >= 0; bit--) {
299 int b = (d >> bit) & 0x1;
301 outw(status1 | b | 0x0000, dev->iobase + DAS16CS_MISC1);
303 outw(status1 | b | 0x0004, dev->iobase + DAS16CS_MISC1);
307 * Make both DAC0CS and DAC1CS high to load
308 * the new data and update analog the output
310 outw(status1 | 0x9, dev->iobase + DAS16CS_MISC1);
316 static int das16cs_ao_rinsn(struct comedi_device *dev,
317 struct comedi_subdevice *s,
318 struct comedi_insn *insn, unsigned int *data)
320 struct das16cs_private *devpriv = dev->private;
322 int chan = CR_CHAN(insn->chanspec);
324 for (i = 0; i < insn->n; i++)
325 data[i] = devpriv->ao_readback[chan];
330 static int das16cs_dio_insn_bits(struct comedi_device *dev,
331 struct comedi_subdevice *s,
332 struct comedi_insn *insn, unsigned int *data)
335 s->state &= ~data[0];
336 s->state |= data[0] & data[1];
338 outw(s->state, dev->iobase + DAS16CS_DIO);
341 data[1] = inw(dev->iobase + DAS16CS_DIO);
346 static int das16cs_dio_insn_config(struct comedi_device *dev,
347 struct comedi_subdevice *s,
348 struct comedi_insn *insn, unsigned int *data)
350 struct das16cs_private *devpriv = dev->private;
351 int chan = CR_CHAN(insn->chanspec);
360 case INSN_CONFIG_DIO_OUTPUT:
363 case INSN_CONFIG_DIO_INPUT:
366 case INSN_CONFIG_DIO_QUERY:
368 (s->io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
376 devpriv->status2 &= ~0x00c0;
377 devpriv->status2 |= (s->io_bits & 0xf0) ? 0x0080 : 0;
378 devpriv->status2 |= (s->io_bits & 0x0f) ? 0x0040 : 0;
380 outw(devpriv->status2, dev->iobase + DAS16CS_MISC2);
385 static const void *das16cs_find_boardinfo(struct comedi_device *dev,
386 struct pcmcia_device *link)
388 const struct das16cs_board *board;
391 for (i = 0; i < ARRAY_SIZE(das16cs_boards); i++) {
392 board = &das16cs_boards[i];
393 if (board->device_id == link->card_id)
400 static int das16cs_auto_attach(struct comedi_device *dev,
401 unsigned long context)
403 struct pcmcia_device *link = comedi_to_pcmcia_dev(dev);
404 const struct das16cs_board *board;
405 struct das16cs_private *devpriv;
406 struct comedi_subdevice *s;
409 board = das16cs_find_boardinfo(dev, link);
412 dev->board_ptr = board;
413 dev->board_name = board->name;
415 link->config_flags |= CONF_AUTO_SET_IO | CONF_ENABLE_IRQ;
416 ret = comedi_pcmcia_enable(dev);
419 dev->iobase = link->resource[0]->start;
424 ret = request_irq(link->irq, das16cs_interrupt, IRQF_SHARED,
425 dev->board_name, dev);
428 dev->irq = link->irq;
430 devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL);
433 dev->private = devpriv;
435 ret = comedi_alloc_subdevices(dev, 3);
439 s = &dev->subdevices[0];
440 dev->read_subdev = s;
441 /* analog input subdevice */
442 s->type = COMEDI_SUBD_AI;
443 s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF | SDF_CMD_READ;
446 s->range_table = &das16cs_ai_range;
447 s->len_chanlist = 16;
448 s->insn_read = das16cs_ai_rinsn;
449 s->do_cmd = das16cs_ai_cmd;
450 s->do_cmdtest = das16cs_ai_cmdtest;
452 s = &dev->subdevices[1];
453 /* analog output subdevice */
454 if (board->n_ao_chans) {
455 s->type = COMEDI_SUBD_AO;
456 s->subdev_flags = SDF_WRITABLE;
457 s->n_chan = board->n_ao_chans;
459 s->range_table = &range_bipolar10;
460 s->insn_write = &das16cs_ao_winsn;
461 s->insn_read = &das16cs_ao_rinsn;
463 s->type = COMEDI_SUBD_UNUSED;
466 s = &dev->subdevices[2];
467 /* digital i/o subdevice */
468 s->type = COMEDI_SUBD_DIO;
469 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
472 s->range_table = &range_digital;
473 s->insn_bits = das16cs_dio_insn_bits;
474 s->insn_config = das16cs_dio_insn_config;
476 dev_info(dev->class_dev, "%s: %s, I/O base=0x%04lx, irq=%u\n",
477 dev->driver->driver_name, dev->board_name,
478 dev->iobase, dev->irq);
483 static void das16cs_detach(struct comedi_device *dev)
486 free_irq(dev->irq, dev);
487 comedi_pcmcia_disable(dev);
490 static struct comedi_driver driver_das16cs = {
491 .driver_name = "cb_das16_cs",
492 .module = THIS_MODULE,
493 .auto_attach = das16cs_auto_attach,
494 .detach = das16cs_detach,
497 static int das16cs_pcmcia_attach(struct pcmcia_device *link)
499 return comedi_pcmcia_auto_config(link, &driver_das16cs);
502 static const struct pcmcia_device_id das16cs_id_table[] = {
503 PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x0039),
504 PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x4009),
507 MODULE_DEVICE_TABLE(pcmcia, das16cs_id_table);
509 static struct pcmcia_driver das16cs_driver = {
510 .name = "cb_das16_cs",
511 .owner = THIS_MODULE,
512 .id_table = das16cs_id_table,
513 .probe = das16cs_pcmcia_attach,
514 .remove = comedi_pcmcia_auto_unconfig,
516 module_comedi_pcmcia_driver(driver_das16cs, das16cs_driver);
518 MODULE_AUTHOR("David A. Schleef <ds@schleef.org>");
519 MODULE_DESCRIPTION("Comedi driver for Computer Boards PC-CARD DAS16/16");
520 MODULE_LICENSE("GPL");