cb_das16_cs.c revision 1ac71e5a35eebee60cdcf15b3980bd94498f037b 
1/*
2    comedi/drivers/das16cs.c
3    Driver for Computer Boards PC-CARD DAS16/16.
4
5    COMEDI - Linux Control and Measurement Device Interface
6    Copyright (C) 2000, 2001, 2002 David A. Schleef <ds@schleef.org>
7
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.
12
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.
17
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.
21
22*/
23/*
24Driver: cb_das16_cs
25Description: Computer Boards PC-CARD DAS16/16
26Devices: [ComputerBoards] PC-CARD DAS16/16 (cb_das16_cs), PC-CARD DAS16/16-AO
27Author: ds
28Updated: Mon, 04 Nov 2002 20:04:21 -0800
29Status: experimental
30
31
32*/
33
34#include <linux/interrupt.h>
35#include <linux/slab.h>
36#include "../comedidev.h"
37#include <linux/delay.h>
38#include <linux/pci.h>
39
40#include <pcmcia/cistpl.h>
41#include <pcmcia/ds.h>
42
43#include "8253.h"
44
45#define DAS16CS_SIZE			18
46
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
56
57struct das16cs_board {
58	const char *name;
59	int device_id;
60	int n_ao_chans;
61};
62static const struct das16cs_board das16cs_boards[] = {
63	{
64	 .device_id = 0x0000,	/* unknown */
65	 .name = "PC-CARD DAS16/16",
66	 .n_ao_chans = 0,
67	 },
68	{
69	 .device_id = 0x0039,
70	 .name = "PC-CARD DAS16/16-AO",
71	 .n_ao_chans = 2,
72	 },
73	{
74	 .device_id = 0x4009,
75	 .name = "PCM-DAS16s/16",
76	 .n_ao_chans = 0,
77	 },
78};
79
80#define n_boards ARRAY_SIZE(das16cs_boards)
81#define thisboard ((const struct das16cs_board *)dev->board_ptr)
82
83struct das16cs_private {
84	struct pcmcia_device *link;
85
86	unsigned int ao_readback[2];
87	unsigned short status1;
88	unsigned short status2;
89};
90#define devpriv ((struct das16cs_private *)dev->private)
91
92static int das16cs_attach(struct comedi_device *dev,
93			  struct comedi_devconfig *it);
94static int das16cs_detach(struct comedi_device *dev);
95static struct comedi_driver driver_das16cs = {
96	.driver_name = "cb_das16_cs",
97	.module = THIS_MODULE,
98	.attach = das16cs_attach,
99	.detach = das16cs_detach,
100};
101
102static struct pcmcia_device *cur_dev = NULL;
103
104static const struct comedi_lrange das16cs_ai_range = { 4, {
105							   RANGE(-10, 10),
106							   RANGE(-5, 5),
107							   RANGE(-2.5, 2.5),
108							   RANGE(-1.25, 1.25),
109							   }
110};
111
112static irqreturn_t das16cs_interrupt(int irq, void *d);
113static int das16cs_ai_rinsn(struct comedi_device *dev,
114			    struct comedi_subdevice *s,
115			    struct comedi_insn *insn, unsigned int *data);
116static int das16cs_ai_cmd(struct comedi_device *dev,
117			  struct comedi_subdevice *s);
118static int das16cs_ai_cmdtest(struct comedi_device *dev,
119			      struct comedi_subdevice *s,
120			      struct comedi_cmd *cmd);
121static int das16cs_ao_winsn(struct comedi_device *dev,
122			    struct comedi_subdevice *s,
123			    struct comedi_insn *insn, unsigned int *data);
124static int das16cs_ao_rinsn(struct comedi_device *dev,
125			    struct comedi_subdevice *s,
126			    struct comedi_insn *insn, unsigned int *data);
127static int das16cs_dio_insn_bits(struct comedi_device *dev,
128				 struct comedi_subdevice *s,
129				 struct comedi_insn *insn, unsigned int *data);
130static int das16cs_dio_insn_config(struct comedi_device *dev,
131				   struct comedi_subdevice *s,
132				   struct comedi_insn *insn,
133				   unsigned int *data);
134static int das16cs_timer_insn_read(struct comedi_device *dev,
135				   struct comedi_subdevice *s,
136				   struct comedi_insn *insn,
137				   unsigned int *data);
138static int das16cs_timer_insn_config(struct comedi_device *dev,
139				     struct comedi_subdevice *s,
140				     struct comedi_insn *insn,
141				     unsigned int *data);
142
143static const struct das16cs_board *das16cs_probe(struct comedi_device *dev,
144						 struct pcmcia_device *link)
145{
146	int i;
147
148	for (i = 0; i < n_boards; i++) {
149		if (das16cs_boards[i].device_id == link->card_id)
150			return das16cs_boards + i;
151	}
152
153	printk("unknown board!\n");
154
155	return NULL;
156}
157
158static int das16cs_attach(struct comedi_device *dev,
159			  struct comedi_devconfig *it)
160{
161	struct pcmcia_device *link;
162	struct comedi_subdevice *s;
163	int ret;
164	int i;
165
166	printk("comedi%d: cb_das16_cs: ", dev->minor);
167
168	link = cur_dev;		/* XXX hack */
169	if (!link)
170		return -EIO;
171
172	dev->iobase = link->resource[0]->start;;
173	printk("I/O base=0x%04lx ", dev->iobase);
174
175	printk("fingerprint:\n");
176	for (i = 0; i < 48; i += 2)
177		printk("%04x ", inw(dev->iobase + i));
178
179	printk("\n");
180
181	ret = request_irq(link->irq, das16cs_interrupt,
182			  IRQF_SHARED, "cb_das16_cs", dev);
183	if (ret < 0)
184		return ret;
185
186	dev->irq = link->irq;
187
188	printk("irq=%u ", dev->irq);
189
190	dev->board_ptr = das16cs_probe(dev, link);
191	if (!dev->board_ptr)
192		return -EIO;
193
194	dev->board_name = thisboard->name;
195
196	if (alloc_private(dev, sizeof(struct das16cs_private)) < 0)
197		return -ENOMEM;
198
199	if (alloc_subdevices(dev, 4) < 0)
200		return -ENOMEM;
201
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;
207	s->n_chan = 16;
208	s->maxdata = 0xffff;
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;
214
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;
221		s->maxdata = 0xffff;
222		s->range_table = &range_bipolar10;
223		s->insn_write = &das16cs_ao_winsn;
224		s->insn_read = &das16cs_ao_rinsn;
225	}
226
227	s = dev->subdevices + 2;
228	/* digital i/o subdevice */
229	if (1) {
230		s->type = COMEDI_SUBD_DIO;
231		s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
232		s->n_chan = 8;
233		s->maxdata = 1;
234		s->range_table = &range_digital;
235		s->insn_bits = das16cs_dio_insn_bits;
236		s->insn_config = das16cs_dio_insn_config;
237	} else {
238		s->type = COMEDI_SUBD_UNUSED;
239	}
240
241	s = dev->subdevices + 3;
242	/* timer subdevice */
243	if (0) {
244		s->type = COMEDI_SUBD_TIMER;
245		s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
246		s->n_chan = 1;
247		s->maxdata = 0xff;
248		s->range_table = &range_unknown;
249		s->insn_read = das16cs_timer_insn_read;
250		s->insn_config = das16cs_timer_insn_config;
251	} else {
252		s->type = COMEDI_SUBD_UNUSED;
253	}
254
255	printk("attached\n");
256
257	return 1;
258}
259
260static int das16cs_detach(struct comedi_device *dev)
261{
262	printk("comedi%d: das16cs: remove\n", dev->minor);
263
264	if (dev->irq)
265		free_irq(dev->irq, dev);
266
267
268	return 0;
269}
270
271static irqreturn_t das16cs_interrupt(int irq, void *d)
272{
273	/* struct comedi_device *dev = d; */
274	return IRQ_HANDLED;
275}
276
277/*
278 * "instructions" read/write data in "one-shot" or "software-triggered"
279 * mode.
280 */
281static int das16cs_ai_rinsn(struct comedi_device *dev,
282			    struct comedi_subdevice *s,
283			    struct comedi_insn *insn, unsigned int *data)
284{
285	int i;
286	int to;
287	int aref;
288	int range;
289	int chan;
290	static int range_bits[] = { 0x800, 0x000, 0x100, 0x200 };
291
292	chan = CR_CHAN(insn->chanspec);
293	aref = CR_AREF(insn->chanspec);
294	range = CR_RANGE(insn->chanspec);
295
296	outw(chan, dev->iobase + 2);
297
298	devpriv->status1 &= ~0xf320;
299	devpriv->status1 |= (aref == AREF_DIFF) ? 0 : 0x0020;
300	outw(devpriv->status1, dev->iobase + 4);
301
302	devpriv->status2 &= ~0xff00;
303	devpriv->status2 |= range_bits[range];
304	outw(devpriv->status2, dev->iobase + 6);
305
306	for (i = 0; i < insn->n; i++) {
307		outw(0, dev->iobase);
308
309#define TIMEOUT 1000
310		for (to = 0; to < TIMEOUT; to++) {
311			if (inw(dev->iobase + 4) & 0x0080)
312				break;
313		}
314		if (to == TIMEOUT) {
315			printk("cb_das16_cs: ai timeout\n");
316			return -ETIME;
317		}
318		data[i] = (unsigned short)inw(dev->iobase + 0);
319	}
320
321	return i;
322}
323
324static int das16cs_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
325{
326	return -EINVAL;
327}
328
329static int das16cs_ai_cmdtest(struct comedi_device *dev,
330			      struct comedi_subdevice *s,
331			      struct comedi_cmd *cmd)
332{
333	int err = 0;
334	int tmp;
335
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.
339	 *
340	 * cmdtest returns 1,2,3,4 or 0, depending on which tests
341	 * the command passes. */
342
343	/* step 1: make sure trigger sources are trivially valid */
344
345	tmp = cmd->start_src;
346	cmd->start_src &= TRIG_NOW;
347	if (!cmd->start_src || tmp != cmd->start_src)
348		err++;
349
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)
353		err++;
354
355	tmp = cmd->convert_src;
356	cmd->convert_src &= TRIG_TIMER | TRIG_EXT;
357	if (!cmd->convert_src || tmp != cmd->convert_src)
358		err++;
359
360	tmp = cmd->scan_end_src;
361	cmd->scan_end_src &= TRIG_COUNT;
362	if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
363		err++;
364
365	tmp = cmd->stop_src;
366	cmd->stop_src &= TRIG_COUNT | TRIG_NONE;
367	if (!cmd->stop_src || tmp != cmd->stop_src)
368		err++;
369
370	if (err)
371		return 1;
372
373	/* step 2: make sure trigger sources are unique and mutually compatible */
374
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)
378		err++;
379	if (cmd->convert_src != TRIG_TIMER && cmd->convert_src != TRIG_EXT)
380		err++;
381	if (cmd->stop_src != TRIG_COUNT && cmd->stop_src != TRIG_NONE)
382		err++;
383
384	if (err)
385		return 2;
386
387	/* step 3: make sure arguments are trivially compatible */
388
389	if (cmd->start_arg != 0) {
390		cmd->start_arg = 0;
391		err++;
392	}
393#define MAX_SPEED	10000	/* in nanoseconds */
394#define MIN_SPEED	1000000000	/* in nanoseconds */
395
396	if (cmd->scan_begin_src == TRIG_TIMER) {
397		if (cmd->scan_begin_arg < MAX_SPEED) {
398			cmd->scan_begin_arg = MAX_SPEED;
399			err++;
400		}
401		if (cmd->scan_begin_arg > MIN_SPEED) {
402			cmd->scan_begin_arg = MIN_SPEED;
403			err++;
404		}
405	} else {
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;
411			err++;
412		}
413	}
414	if (cmd->convert_src == TRIG_TIMER) {
415		if (cmd->convert_arg < MAX_SPEED) {
416			cmd->convert_arg = MAX_SPEED;
417			err++;
418		}
419		if (cmd->convert_arg > MIN_SPEED) {
420			cmd->convert_arg = MIN_SPEED;
421			err++;
422		}
423	} else {
424		/* external trigger */
425		/* see above */
426		if (cmd->convert_arg > 9) {
427			cmd->convert_arg = 9;
428			err++;
429		}
430	}
431
432	if (cmd->scan_end_arg != cmd->chanlist_len) {
433		cmd->scan_end_arg = cmd->chanlist_len;
434		err++;
435	}
436	if (cmd->stop_src == TRIG_COUNT) {
437		if (cmd->stop_arg > 0x00ffffff) {
438			cmd->stop_arg = 0x00ffffff;
439			err++;
440		}
441	} else {
442		/* TRIG_NONE */
443		if (cmd->stop_arg != 0) {
444			cmd->stop_arg = 0;
445			err++;
446		}
447	}
448
449	if (err)
450		return 3;
451
452	/* step 4: fix up any arguments */
453
454	if (cmd->scan_begin_src == TRIG_TIMER) {
455		unsigned int div1 = 0, div2 = 0;
456
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)
462			err++;
463	}
464	if (cmd->convert_src == TRIG_TIMER) {
465		unsigned int div1 = 0, div2 = 0;
466
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)
472			err++;
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;
478			err++;
479		}
480	}
481
482	if (err)
483		return 4;
484
485	return 0;
486}
487
488static int das16cs_ao_winsn(struct comedi_device *dev,
489			    struct comedi_subdevice *s,
490			    struct comedi_insn *insn, unsigned int *data)
491{
492	int i;
493	int chan = CR_CHAN(insn->chanspec);
494	unsigned short status1;
495	unsigned short d;
496	int bit;
497
498	for (i = 0; i < insn->n; i++) {
499		devpriv->ao_readback[chan] = data[i];
500		d = data[i];
501
502		outw(devpriv->status1, dev->iobase + 4);
503		udelay(1);
504
505		status1 = devpriv->status1 & ~0xf;
506		if (chan)
507			status1 |= 0x0001;
508		else
509			status1 |= 0x0008;
510
511/* 		printk("0x%04x\n",status1);*/
512		outw(status1, dev->iobase + 4);
513		udelay(1);
514
515		for (bit = 15; bit >= 0; bit--) {
516			int b = (d >> bit) & 0x1;
517			b <<= 1;
518/*			printk("0x%04x\n",status1 | b | 0x0000);*/
519			outw(status1 | b | 0x0000, dev->iobase + 4);
520			udelay(1);
521/*			printk("0x%04x\n",status1 | b | 0x0004);*/
522			outw(status1 | b | 0x0004, dev->iobase + 4);
523			udelay(1);
524		}
525/*		make high both DAC0CS and DAC1CS to load
526		new data and update analog output*/
527		outw(status1 | 0x9, dev->iobase + 4);
528	}
529
530	return i;
531}
532
533/* AO subdevices should have a read insn as well as a write insn.
534 * Usually this means copying a value stored in devpriv. */
535static int das16cs_ao_rinsn(struct comedi_device *dev,
536			    struct comedi_subdevice *s,
537			    struct comedi_insn *insn, unsigned int *data)
538{
539	int i;
540	int chan = CR_CHAN(insn->chanspec);
541
542	for (i = 0; i < insn->n; i++)
543		data[i] = devpriv->ao_readback[chan];
544
545	return i;
546}
547
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 */
553static int das16cs_dio_insn_bits(struct comedi_device *dev,
554				 struct comedi_subdevice *s,
555				 struct comedi_insn *insn, unsigned int *data)
556{
557	if (insn->n != 2)
558		return -EINVAL;
559
560	if (data[0]) {
561		s->state &= ~data[0];
562		s->state |= data[0] & data[1];
563
564		outw(s->state, dev->iobase + 16);
565	}
566
567	/* on return, data[1] contains the value of the digital
568	 * input and output lines. */
569	data[1] = inw(dev->iobase + 16);
570
571	return 2;
572}
573
574static int das16cs_dio_insn_config(struct comedi_device *dev,
575				   struct comedi_subdevice *s,
576				   struct comedi_insn *insn, unsigned int *data)
577{
578	int chan = CR_CHAN(insn->chanspec);
579	int bits;
580
581	if (chan < 4)
582		bits = 0x0f;
583	else
584		bits = 0xf0;
585
586	switch (data[0]) {
587	case INSN_CONFIG_DIO_OUTPUT:
588		s->io_bits |= bits;
589		break;
590	case INSN_CONFIG_DIO_INPUT:
591		s->io_bits &= bits;
592		break;
593	case INSN_CONFIG_DIO_QUERY:
594		data[1] =
595		    (s->io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
596		return insn->n;
597		break;
598	default:
599		return -EINVAL;
600		break;
601	}
602
603	devpriv->status2 &= ~0x00c0;
604	devpriv->status2 |= (s->io_bits & 0xf0) ? 0x0080 : 0;
605	devpriv->status2 |= (s->io_bits & 0x0f) ? 0x0040 : 0;
606
607	outw(devpriv->status2, dev->iobase + 6);
608
609	return insn->n;
610}
611
612static int das16cs_timer_insn_read(struct comedi_device *dev,
613				   struct comedi_subdevice *s,
614				   struct comedi_insn *insn, unsigned int *data)
615{
616	return -EINVAL;
617}
618
619static int das16cs_timer_insn_config(struct comedi_device *dev,
620				     struct comedi_subdevice *s,
621				     struct comedi_insn *insn,
622				     unsigned int *data)
623{
624	return -EINVAL;
625}
626
627/* PCMCIA stuff */
628
629/*======================================================================
630
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.
633
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.
637
638======================================================================*/
639
640#if defined(CONFIG_PCMCIA) || defined(CONFIG_PCMCIA_MODULE)
641
642static void das16cs_pcmcia_config(struct pcmcia_device *link);
643static void das16cs_pcmcia_release(struct pcmcia_device *link);
644static int das16cs_pcmcia_suspend(struct pcmcia_device *p_dev);
645static int das16cs_pcmcia_resume(struct pcmcia_device *p_dev);
646
647/*
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.
651*/
652
653static int das16cs_pcmcia_attach(struct pcmcia_device *);
654static void das16cs_pcmcia_detach(struct pcmcia_device *);
655
656/*
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.
661*/
662
663struct local_info_t {
664	struct pcmcia_device *link;
665	int stop;
666	struct bus_operations *bus;
667};
668
669/*======================================================================
670
671    das16cs_pcmcia_attach() creates an "instance" of the driver, allocating
672    local data structures for one device.  The device is registered
673    with Card Services.
674
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.
678
679======================================================================*/
680
681static int das16cs_pcmcia_attach(struct pcmcia_device *link)
682{
683	struct local_info_t *local;
684
685	dev_dbg(&link->dev, "das16cs_pcmcia_attach()\n");
686
687	/* Allocate space for private device-specific data */
688	local = kzalloc(sizeof(struct local_info_t), GFP_KERNEL);
689	if (!local)
690		return -ENOMEM;
691	local->link = link;
692	link->priv = local;
693
694	cur_dev = link;
695
696	das16cs_pcmcia_config(link);
697
698	return 0;
699}				/* das16cs_pcmcia_attach */
700
701static void das16cs_pcmcia_detach(struct pcmcia_device *link)
702{
703	dev_dbg(&link->dev, "das16cs_pcmcia_detach\n");
704
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 */
708	kfree(link->priv);
709}				/* das16cs_pcmcia_detach */
710
711
712static int das16cs_pcmcia_config_loop(struct pcmcia_device *p_dev,
713				cistpl_cftable_entry_t *cfg,
714				cistpl_cftable_entry_t *dflt,
715				unsigned int vcc,
716				void *priv_data)
717{
718	if (cfg->index == 0)
719		return -EINVAL;
720
721	/* Do we need to allocate an interrupt? */
722	p_dev->config_flags |= CONF_ENABLE_IRQ;
723
724	/* IO window settings */
725	p_dev->resource[0]->end = p_dev->resource[1]->end = 0;
726	if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
727		cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
728		p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK;
729		p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
730		p_dev->resource[0]->flags |=
731			pcmcia_io_cfg_data_width(io->flags);
732		p_dev->resource[0]->start = io->win[0].base;
733		p_dev->resource[0]->end = io->win[0].len;
734		if (io->nwin > 1) {
735			p_dev->resource[1]->flags = p_dev->resource[0]->flags;
736			p_dev->resource[1]->start = io->win[1].base;
737			p_dev->resource[1]->end = io->win[1].len;
738		}
739		/* This reserves IO space but doesn't actually enable it */
740		return pcmcia_request_io(p_dev);
741	}
742
743	return 0;
744}
745
746static void das16cs_pcmcia_config(struct pcmcia_device *link)
747{
748	int ret;
749
750	dev_dbg(&link->dev, "das16cs_pcmcia_config\n");
751
752	ret = pcmcia_loop_config(link, das16cs_pcmcia_config_loop, NULL);
753	if (ret) {
754		dev_warn(&link->dev, "no configuration found\n");
755		goto failed;
756	}
757
758	if (!link->irq)
759		goto failed;
760
761	/*
762	   This actually configures the PCMCIA socket -- setting up
763	   the I/O windows and the interrupt mapping, and putting the
764	   card and host interface into "Memory and IO" mode.
765	 */
766	ret = pcmcia_enable_device(link);
767	if (ret)
768		goto failed;
769
770	/* Finally, report what we've done */
771	dev_info(&link->dev, "index 0x%02x", link->config_index);
772	printk(", irq %u", link->irq);
773	if (link->resource[0])
774		printk(", io %pR", link->resource[0]);
775	if (link->resource[1])
776		printk(", io %pR", link->resource[1]);
777	printk("\n");
778
779	return;
780
781failed:
782	das16cs_pcmcia_release(link);
783}				/* das16cs_pcmcia_config */
784
785static void das16cs_pcmcia_release(struct pcmcia_device *link)
786{
787	dev_dbg(&link->dev, "das16cs_pcmcia_release\n");
788	pcmcia_disable_device(link);
789}				/* das16cs_pcmcia_release */
790
791static int das16cs_pcmcia_suspend(struct pcmcia_device *link)
792{
793	struct local_info_t *local = link->priv;
794
795	/* Mark the device as stopped, to block IO until later */
796	local->stop = 1;
797
798	return 0;
799}				/* das16cs_pcmcia_suspend */
800
801static int das16cs_pcmcia_resume(struct pcmcia_device *link)
802{
803	struct local_info_t *local = link->priv;
804
805	local->stop = 0;
806	return 0;
807}				/* das16cs_pcmcia_resume */
808
809/*====================================================================*/
810
811static struct pcmcia_device_id das16cs_id_table[] = {
812	PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x0039),
813	PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x4009),
814	PCMCIA_DEVICE_NULL
815};
816
817MODULE_DEVICE_TABLE(pcmcia, das16cs_id_table);
818MODULE_AUTHOR("David A. Schleef <ds@schleef.org>");
819MODULE_DESCRIPTION("Comedi driver for Computer Boards PC-CARD DAS16/16");
820MODULE_LICENSE("GPL");
821
822struct pcmcia_driver das16cs_driver = {
823	.probe = das16cs_pcmcia_attach,
824	.remove = das16cs_pcmcia_detach,
825	.suspend = das16cs_pcmcia_suspend,
826	.resume = das16cs_pcmcia_resume,
827	.id_table = das16cs_id_table,
828	.owner = THIS_MODULE,
829	.drv = {
830		.name = "cb_das16_cs",
831		},
832};
833
834static int __init init_das16cs_pcmcia_cs(void)
835{
836	pcmcia_register_driver(&das16cs_driver);
837	return 0;
838}
839
840static void __exit exit_das16cs_pcmcia_cs(void)
841{
842	pr_debug("das16cs_pcmcia_cs: unloading\n");
843	pcmcia_unregister_driver(&das16cs_driver);
844}
845
846int __init init_module(void)
847{
848	int ret;
849
850	ret = init_das16cs_pcmcia_cs();
851	if (ret < 0)
852		return ret;
853
854	return comedi_driver_register(&driver_das16cs);
855}
856
857void __exit cleanup_module(void)
858{
859	exit_das16cs_pcmcia_cs();
860	comedi_driver_unregister(&driver_das16cs);
861}
862
863#else
864static int __init driver_das16cs_init_module(void)
865{
866	return comedi_driver_register(&driver_das16cs);
867}
868
869static void __exit driver_das16cs_cleanup_module(void)
870{
871	comedi_driver_unregister(&driver_das16cs);
872}
873
874module_init(driver_das16cs_init_module);
875module_exit(driver_das16cs_cleanup_module);
876#endif /* CONFIG_PCMCIA */
877