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.
25 Description: Computer Boards PC-CARD DAS16/16
26 Devices: [ComputerBoards] PC-CARD DAS16/16 (cb_das16_cs), PC-CARD DAS16/16-AO
28 Updated: Mon, 04 Nov 2002 20:04:21 -0800
34 #include <linux/interrupt.h>
35 #include <linux/slab.h>
36 #include "../comedidev.h"
37 #include <linux/delay.h>
38 #include <linux/pci.h>
40 #include <pcmcia/cistpl.h>
41 #include <pcmcia/ds.h>
45 #define DAS16CS_SIZE 18
47 #define DAS16CS_ADC_DATA 0
48 #define DAS16CS_DIO_MUX 2
49 #define DAS16CS_MISC1 4
50 #define DAS16CS_MISC2 6
51 #define DAS16CS_CTR0 8
52 #define DAS16CS_CTR1 10
53 #define DAS16CS_CTR2 12
54 #define DAS16CS_CTR_CONTROL 14
55 #define DAS16CS_DIO 16
57 struct das16cs_board {
62 static const struct das16cs_board das16cs_boards[] = {
64 .device_id = 0x0000, /* unknown */
65 .name = "PC-CARD DAS16/16",
70 .name = "PC-CARD DAS16/16-AO",
75 .name = "PCM-DAS16s/16",
80 #define n_boards ARRAY_SIZE(das16cs_boards)
81 #define thisboard ((const struct das16cs_board *)dev->board_ptr)
83 struct das16cs_private {
84 struct pcmcia_device *link;
86 unsigned int ao_readback[2];
87 unsigned short status1;
88 unsigned short status2;
90 #define devpriv ((struct das16cs_private *)dev->private)
92 static int das16cs_attach(struct comedi_device *dev,
93 struct comedi_devconfig *it);
94 static int das16cs_detach(struct comedi_device *dev);
95 static struct comedi_driver driver_das16cs = {
96 .driver_name = "cb_das16_cs",
97 .module = THIS_MODULE,
98 .attach = das16cs_attach,
99 .detach = das16cs_detach,
102 static struct pcmcia_device *cur_dev = NULL;
104 static const struct comedi_lrange das16cs_ai_range = { 4, {
112 static irqreturn_t das16cs_interrupt(int irq, void *d);
113 static int das16cs_ai_rinsn(struct comedi_device *dev,
114 struct comedi_subdevice *s,
115 struct comedi_insn *insn, unsigned int *data);
116 static int das16cs_ai_cmd(struct comedi_device *dev,
117 struct comedi_subdevice *s);
118 static int das16cs_ai_cmdtest(struct comedi_device *dev,
119 struct comedi_subdevice *s,
120 struct comedi_cmd *cmd);
121 static int das16cs_ao_winsn(struct comedi_device *dev,
122 struct comedi_subdevice *s,
123 struct comedi_insn *insn, unsigned int *data);
124 static int das16cs_ao_rinsn(struct comedi_device *dev,
125 struct comedi_subdevice *s,
126 struct comedi_insn *insn, unsigned int *data);
127 static int das16cs_dio_insn_bits(struct comedi_device *dev,
128 struct comedi_subdevice *s,
129 struct comedi_insn *insn, unsigned int *data);
130 static int das16cs_dio_insn_config(struct comedi_device *dev,
131 struct comedi_subdevice *s,
132 struct comedi_insn *insn,
134 static int das16cs_timer_insn_read(struct comedi_device *dev,
135 struct comedi_subdevice *s,
136 struct comedi_insn *insn,
138 static int das16cs_timer_insn_config(struct comedi_device *dev,
139 struct comedi_subdevice *s,
140 struct comedi_insn *insn,
143 static const struct das16cs_board *das16cs_probe(struct comedi_device *dev,
144 struct pcmcia_device *link)
148 for (i = 0; i < n_boards; i++) {
149 if (das16cs_boards[i].device_id == link->card_id)
150 return das16cs_boards + i;
153 printk("unknown board!\n");
158 static int das16cs_attach(struct comedi_device *dev,
159 struct comedi_devconfig *it)
161 struct pcmcia_device *link;
162 struct comedi_subdevice *s;
166 printk("comedi%d: cb_das16_cs: ", dev->minor);
168 link = cur_dev; /* XXX hack */
172 dev->iobase = link->resource[0]->start;
173 printk("I/O base=0x%04lx ", dev->iobase);
175 printk("fingerprint:\n");
176 for (i = 0; i < 48; i += 2)
177 printk("%04x ", inw(dev->iobase + i));
181 ret = request_irq(link->irq, das16cs_interrupt,
182 IRQF_SHARED, "cb_das16_cs", dev);
186 dev->irq = link->irq;
188 printk("irq=%u ", dev->irq);
190 dev->board_ptr = das16cs_probe(dev, link);
194 dev->board_name = thisboard->name;
196 if (alloc_private(dev, sizeof(struct das16cs_private)) < 0)
199 if (alloc_subdevices(dev, 4) < 0)
202 s = dev->subdevices + 0;
203 dev->read_subdev = s;
204 /* analog input subdevice */
205 s->type = COMEDI_SUBD_AI;
206 s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF | SDF_CMD_READ;
209 s->range_table = &das16cs_ai_range;
210 s->len_chanlist = 16;
211 s->insn_read = das16cs_ai_rinsn;
212 s->do_cmd = das16cs_ai_cmd;
213 s->do_cmdtest = das16cs_ai_cmdtest;
215 s = dev->subdevices + 1;
216 /* analog output subdevice */
217 if (thisboard->n_ao_chans) {
218 s->type = COMEDI_SUBD_AO;
219 s->subdev_flags = SDF_WRITABLE;
220 s->n_chan = thisboard->n_ao_chans;
222 s->range_table = &range_bipolar10;
223 s->insn_write = &das16cs_ao_winsn;
224 s->insn_read = &das16cs_ao_rinsn;
227 s = dev->subdevices + 2;
228 /* digital i/o subdevice */
230 s->type = COMEDI_SUBD_DIO;
231 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
234 s->range_table = &range_digital;
235 s->insn_bits = das16cs_dio_insn_bits;
236 s->insn_config = das16cs_dio_insn_config;
238 s->type = COMEDI_SUBD_UNUSED;
241 s = dev->subdevices + 3;
242 /* timer subdevice */
244 s->type = COMEDI_SUBD_TIMER;
245 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
248 s->range_table = &range_unknown;
249 s->insn_read = das16cs_timer_insn_read;
250 s->insn_config = das16cs_timer_insn_config;
252 s->type = COMEDI_SUBD_UNUSED;
255 printk("attached\n");
260 static int das16cs_detach(struct comedi_device *dev)
262 printk("comedi%d: das16cs: remove\n", dev->minor);
265 free_irq(dev->irq, dev);
271 static irqreturn_t das16cs_interrupt(int irq, void *d)
273 /* struct comedi_device *dev = d; */
278 * "instructions" read/write data in "one-shot" or "software-triggered"
281 static int das16cs_ai_rinsn(struct comedi_device *dev,
282 struct comedi_subdevice *s,
283 struct comedi_insn *insn, unsigned int *data)
290 static int range_bits[] = { 0x800, 0x000, 0x100, 0x200 };
292 chan = CR_CHAN(insn->chanspec);
293 aref = CR_AREF(insn->chanspec);
294 range = CR_RANGE(insn->chanspec);
296 outw(chan, dev->iobase + 2);
298 devpriv->status1 &= ~0xf320;
299 devpriv->status1 |= (aref == AREF_DIFF) ? 0 : 0x0020;
300 outw(devpriv->status1, dev->iobase + 4);
302 devpriv->status2 &= ~0xff00;
303 devpriv->status2 |= range_bits[range];
304 outw(devpriv->status2, dev->iobase + 6);
306 for (i = 0; i < insn->n; i++) {
307 outw(0, dev->iobase);
310 for (to = 0; to < TIMEOUT; to++) {
311 if (inw(dev->iobase + 4) & 0x0080)
315 printk("cb_das16_cs: ai timeout\n");
318 data[i] = (unsigned short)inw(dev->iobase + 0);
324 static int das16cs_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
329 static int das16cs_ai_cmdtest(struct comedi_device *dev,
330 struct comedi_subdevice *s,
331 struct comedi_cmd *cmd)
336 /* cmdtest tests a particular command to see if it is valid.
337 * Using the cmdtest ioctl, a user can create a valid cmd
338 * and then have it executes by the cmd ioctl.
340 * cmdtest returns 1,2,3,4 or 0, depending on which tests
341 * the command passes. */
343 /* step 1: make sure trigger sources are trivially valid */
345 tmp = cmd->start_src;
346 cmd->start_src &= TRIG_NOW;
347 if (!cmd->start_src || tmp != cmd->start_src)
350 tmp = cmd->scan_begin_src;
351 cmd->scan_begin_src &= TRIG_TIMER | TRIG_EXT;
352 if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
355 tmp = cmd->convert_src;
356 cmd->convert_src &= TRIG_TIMER | TRIG_EXT;
357 if (!cmd->convert_src || tmp != cmd->convert_src)
360 tmp = cmd->scan_end_src;
361 cmd->scan_end_src &= TRIG_COUNT;
362 if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
366 cmd->stop_src &= TRIG_COUNT | TRIG_NONE;
367 if (!cmd->stop_src || tmp != cmd->stop_src)
373 /* step 2: make sure trigger sources are unique and mutually compatible */
375 /* note that mutual compatibility is not an issue here */
376 if (cmd->scan_begin_src != TRIG_TIMER &&
377 cmd->scan_begin_src != TRIG_EXT)
379 if (cmd->convert_src != TRIG_TIMER && cmd->convert_src != TRIG_EXT)
381 if (cmd->stop_src != TRIG_COUNT && cmd->stop_src != TRIG_NONE)
387 /* step 3: make sure arguments are trivially compatible */
389 if (cmd->start_arg != 0) {
393 #define MAX_SPEED 10000 /* in nanoseconds */
394 #define MIN_SPEED 1000000000 /* in nanoseconds */
396 if (cmd->scan_begin_src == TRIG_TIMER) {
397 if (cmd->scan_begin_arg < MAX_SPEED) {
398 cmd->scan_begin_arg = MAX_SPEED;
401 if (cmd->scan_begin_arg > MIN_SPEED) {
402 cmd->scan_begin_arg = MIN_SPEED;
406 /* external trigger */
407 /* should be level/edge, hi/lo specification here */
408 /* should specify multiple external triggers */
409 if (cmd->scan_begin_arg > 9) {
410 cmd->scan_begin_arg = 9;
414 if (cmd->convert_src == TRIG_TIMER) {
415 if (cmd->convert_arg < MAX_SPEED) {
416 cmd->convert_arg = MAX_SPEED;
419 if (cmd->convert_arg > MIN_SPEED) {
420 cmd->convert_arg = MIN_SPEED;
424 /* external trigger */
426 if (cmd->convert_arg > 9) {
427 cmd->convert_arg = 9;
432 if (cmd->scan_end_arg != cmd->chanlist_len) {
433 cmd->scan_end_arg = cmd->chanlist_len;
436 if (cmd->stop_src == TRIG_COUNT) {
437 if (cmd->stop_arg > 0x00ffffff) {
438 cmd->stop_arg = 0x00ffffff;
443 if (cmd->stop_arg != 0) {
452 /* step 4: fix up any arguments */
454 if (cmd->scan_begin_src == TRIG_TIMER) {
455 unsigned int div1 = 0, div2 = 0;
457 tmp = cmd->scan_begin_arg;
458 i8253_cascade_ns_to_timer(100, &div1, &div2,
459 &cmd->scan_begin_arg,
460 cmd->flags & TRIG_ROUND_MASK);
461 if (tmp != cmd->scan_begin_arg)
464 if (cmd->convert_src == TRIG_TIMER) {
465 unsigned int div1 = 0, div2 = 0;
467 tmp = cmd->convert_arg;
468 i8253_cascade_ns_to_timer(100, &div1, &div2,
469 &cmd->scan_begin_arg,
470 cmd->flags & TRIG_ROUND_MASK);
471 if (tmp != cmd->convert_arg)
473 if (cmd->scan_begin_src == TRIG_TIMER &&
474 cmd->scan_begin_arg <
475 cmd->convert_arg * cmd->scan_end_arg) {
476 cmd->scan_begin_arg =
477 cmd->convert_arg * cmd->scan_end_arg;
488 static int das16cs_ao_winsn(struct comedi_device *dev,
489 struct comedi_subdevice *s,
490 struct comedi_insn *insn, unsigned int *data)
493 int chan = CR_CHAN(insn->chanspec);
494 unsigned short status1;
498 for (i = 0; i < insn->n; i++) {
499 devpriv->ao_readback[chan] = data[i];
502 outw(devpriv->status1, dev->iobase + 4);
505 status1 = devpriv->status1 & ~0xf;
511 /* printk("0x%04x\n",status1);*/
512 outw(status1, dev->iobase + 4);
515 for (bit = 15; bit >= 0; bit--) {
516 int b = (d >> bit) & 0x1;
518 /* printk("0x%04x\n",status1 | b | 0x0000);*/
519 outw(status1 | b | 0x0000, dev->iobase + 4);
521 /* printk("0x%04x\n",status1 | b | 0x0004);*/
522 outw(status1 | b | 0x0004, dev->iobase + 4);
525 /* make high both DAC0CS and DAC1CS to load
526 new data and update analog output*/
527 outw(status1 | 0x9, dev->iobase + 4);
533 /* AO subdevices should have a read insn as well as a write insn.
534 * Usually this means copying a value stored in devpriv. */
535 static int das16cs_ao_rinsn(struct comedi_device *dev,
536 struct comedi_subdevice *s,
537 struct comedi_insn *insn, unsigned int *data)
540 int chan = CR_CHAN(insn->chanspec);
542 for (i = 0; i < insn->n; i++)
543 data[i] = devpriv->ao_readback[chan];
548 /* DIO devices are slightly special. Although it is possible to
549 * implement the insn_read/insn_write interface, it is much more
550 * useful to applications if you implement the insn_bits interface.
551 * This allows packed reading/writing of the DIO channels. The
552 * comedi core can convert between insn_bits and insn_read/write */
553 static int das16cs_dio_insn_bits(struct comedi_device *dev,
554 struct comedi_subdevice *s,
555 struct comedi_insn *insn, unsigned int *data)
561 s->state &= ~data[0];
562 s->state |= data[0] & data[1];
564 outw(s->state, dev->iobase + 16);
567 /* on return, data[1] contains the value of the digital
568 * input and output lines. */
569 data[1] = inw(dev->iobase + 16);
574 static int das16cs_dio_insn_config(struct comedi_device *dev,
575 struct comedi_subdevice *s,
576 struct comedi_insn *insn, unsigned int *data)
578 int chan = CR_CHAN(insn->chanspec);
587 case INSN_CONFIG_DIO_OUTPUT:
590 case INSN_CONFIG_DIO_INPUT:
593 case INSN_CONFIG_DIO_QUERY:
595 (s->io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
603 devpriv->status2 &= ~0x00c0;
604 devpriv->status2 |= (s->io_bits & 0xf0) ? 0x0080 : 0;
605 devpriv->status2 |= (s->io_bits & 0x0f) ? 0x0040 : 0;
607 outw(devpriv->status2, dev->iobase + 6);
612 static int das16cs_timer_insn_read(struct comedi_device *dev,
613 struct comedi_subdevice *s,
614 struct comedi_insn *insn, unsigned int *data)
619 static int das16cs_timer_insn_config(struct comedi_device *dev,
620 struct comedi_subdevice *s,
621 struct comedi_insn *insn,
629 /*======================================================================
631 The following pcmcia code for the pcm-das08 is adapted from the
632 dummy_cs.c driver of the Linux PCMCIA Card Services package.
634 The initial developer of the original code is David A. Hinds
635 <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
636 are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
638 ======================================================================*/
640 #if defined(CONFIG_PCMCIA) || defined(CONFIG_PCMCIA_MODULE)
642 static void das16cs_pcmcia_config(struct pcmcia_device *link);
643 static void das16cs_pcmcia_release(struct pcmcia_device *link);
644 static int das16cs_pcmcia_suspend(struct pcmcia_device *p_dev);
645 static int das16cs_pcmcia_resume(struct pcmcia_device *p_dev);
648 The attach() and detach() entry points are used to create and destroy
649 "instances" of the driver, where each instance represents everything
650 needed to manage one actual PCMCIA card.
653 static int das16cs_pcmcia_attach(struct pcmcia_device *);
654 static void das16cs_pcmcia_detach(struct pcmcia_device *);
657 You'll also need to prototype all the functions that will actually
658 be used to talk to your device. See 'memory_cs' for a good example
659 of a fully self-sufficient driver; the other drivers rely more or
660 less on other parts of the kernel.
663 struct local_info_t {
664 struct pcmcia_device *link;
666 struct bus_operations *bus;
669 /*======================================================================
671 das16cs_pcmcia_attach() creates an "instance" of the driver, allocating
672 local data structures for one device. The device is registered
675 The dev_link structure is initialized, but we don't actually
676 configure the card at this point -- we wait until we receive a
677 card insertion event.
679 ======================================================================*/
681 static int das16cs_pcmcia_attach(struct pcmcia_device *link)
683 struct local_info_t *local;
685 dev_dbg(&link->dev, "das16cs_pcmcia_attach()\n");
687 /* Allocate space for private device-specific data */
688 local = kzalloc(sizeof(struct local_info_t), GFP_KERNEL);
696 das16cs_pcmcia_config(link);
699 } /* das16cs_pcmcia_attach */
701 static void das16cs_pcmcia_detach(struct pcmcia_device *link)
703 dev_dbg(&link->dev, "das16cs_pcmcia_detach\n");
705 ((struct local_info_t *)link->priv)->stop = 1;
706 das16cs_pcmcia_release(link);
707 /* This points to the parent struct local_info_t struct */
709 } /* das16cs_pcmcia_detach */
712 static int das16cs_pcmcia_config_loop(struct pcmcia_device *p_dev,
715 if (p_dev->config_index == 0)
718 return pcmcia_request_io(p_dev);
721 static void das16cs_pcmcia_config(struct pcmcia_device *link)
725 dev_dbg(&link->dev, "das16cs_pcmcia_config\n");
727 /* Do we need to allocate an interrupt? */
728 link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
730 ret = pcmcia_loop_config(link, das16cs_pcmcia_config_loop, NULL);
732 dev_warn(&link->dev, "no configuration found\n");
739 ret = pcmcia_enable_device(link);
746 das16cs_pcmcia_release(link);
747 } /* das16cs_pcmcia_config */
749 static void das16cs_pcmcia_release(struct pcmcia_device *link)
751 dev_dbg(&link->dev, "das16cs_pcmcia_release\n");
752 pcmcia_disable_device(link);
753 } /* das16cs_pcmcia_release */
755 static int das16cs_pcmcia_suspend(struct pcmcia_device *link)
757 struct local_info_t *local = link->priv;
759 /* Mark the device as stopped, to block IO until later */
763 } /* das16cs_pcmcia_suspend */
765 static int das16cs_pcmcia_resume(struct pcmcia_device *link)
767 struct local_info_t *local = link->priv;
771 } /* das16cs_pcmcia_resume */
773 /*====================================================================*/
775 static struct pcmcia_device_id das16cs_id_table[] = {
776 PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x0039),
777 PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x4009),
781 MODULE_DEVICE_TABLE(pcmcia, das16cs_id_table);
782 MODULE_AUTHOR("David A. Schleef <ds@schleef.org>");
783 MODULE_DESCRIPTION("Comedi driver for Computer Boards PC-CARD DAS16/16");
784 MODULE_LICENSE("GPL");
786 struct pcmcia_driver das16cs_driver = {
787 .probe = das16cs_pcmcia_attach,
788 .remove = das16cs_pcmcia_detach,
789 .suspend = das16cs_pcmcia_suspend,
790 .resume = das16cs_pcmcia_resume,
791 .id_table = das16cs_id_table,
792 .owner = THIS_MODULE,
793 .name = "cb_das16_cs",
796 static int __init init_das16cs_pcmcia_cs(void)
798 pcmcia_register_driver(&das16cs_driver);
802 static void __exit exit_das16cs_pcmcia_cs(void)
804 pr_debug("das16cs_pcmcia_cs: unloading\n");
805 pcmcia_unregister_driver(&das16cs_driver);
808 int __init init_module(void)
812 ret = init_das16cs_pcmcia_cs();
816 return comedi_driver_register(&driver_das16cs);
819 void __exit cleanup_module(void)
821 exit_das16cs_pcmcia_cs();
822 comedi_driver_unregister(&driver_das16cs);
826 static int __init driver_das16cs_init_module(void)
828 return comedi_driver_register(&driver_das16cs);
831 static void __exit driver_das16cs_cleanup_module(void)
833 comedi_driver_unregister(&driver_das16cs);
836 module_init(driver_das16cs_init_module);
837 module_exit(driver_das16cs_cleanup_module);
838 #endif /* CONFIG_PCMCIA */