/drivers/staging/comedi/drivers/ni_mio_cs.c

  1/*
  2    comedi/drivers/ni_mio_cs.c
  3    Hardware driver for NI PCMCIA MIO E series cards
  4
  5    COMEDI - Linux Control and Measurement Device Interface
  6    Copyright (C) 1997-2000 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: ni_mio_cs
 25Description: National Instruments DAQCard E series
 26Author: ds
 27Status: works
 28Devices: [National Instruments] DAQCard-AI-16XE-50 (ni_mio_cs),
 29  DAQCard-AI-16E-4, DAQCard-6062E, DAQCard-6024E, DAQCard-6036E
 30Updated: Thu Oct 23 19:43:17 CDT 2003
 31
 32See the notes in the ni_atmio.o driver.
 33*/
 34/*
 35	The real guts of the driver is in ni_mio_common.c, which is
 36	included by all the E series drivers.
 37
 38	References for specifications:
 39
 40	   341080a.pdf  DAQCard E Series Register Level Programmer Manual
 41
 42*/
 43
 44#include "../comedidev.h"
 45
 46#include <linux/delay.h>
 47
 48#include "ni_stc.h"
 49#include "8255.h"
 50
 51#include <pcmcia/cistpl.h>
 52#include <pcmcia/ds.h>
 53
 54#undef DEBUG
 55
 56#define ATMIO 1
 57#undef PCIMIO
 58
 59/*
 60 *  AT specific setup
 61 */
 62
 63#define NI_SIZE 0x20
 64
 65#define MAX_N_CALDACS 32
 66
 67static const struct ni_board_struct ni_boards[] = {
 68	{.device_id = 0x010d,
 69	 .name = "DAQCard-ai-16xe-50",
 70	 .n_adchan = 16,
 71	 .adbits = 16,
 72	 .ai_fifo_depth = 1024,
 73	 .alwaysdither = 0,
 74	 .gainlkup = ai_gain_8,
 75	 .ai_speed = 5000,
 76	 .n_aochan = 0,
 77	 .aobits = 0,
 78	 .ao_fifo_depth = 0,
 79	 .ao_unipolar = 0,
 80	 .num_p0_dio_channels = 8,
 81	 .has_8255 = 0,
 82	 .caldac = {dac8800, dac8043},
 83	 },
 84	{.device_id = 0x010c,
 85	 .name = "DAQCard-ai-16e-4",
 86	 .n_adchan = 16,
 87	 .adbits = 12,
 88	 .ai_fifo_depth = 1024,
 89	 .alwaysdither = 0,
 90	 .gainlkup = ai_gain_16,
 91	 .ai_speed = 4000,
 92	 .n_aochan = 0,
 93	 .aobits = 0,
 94	 .ao_fifo_depth = 0,
 95	 .ao_unipolar = 0,
 96	 .num_p0_dio_channels = 8,
 97	 .has_8255 = 0,
 98	 .caldac = {mb88341},	/* verified */
 99	 },
100	{.device_id = 0x02c4,
101	 .name = "DAQCard-6062E",
102	 .n_adchan = 16,
103	 .adbits = 12,
104	 .ai_fifo_depth = 8192,
105	 .alwaysdither = 0,
106	 .gainlkup = ai_gain_16,
107	 .ai_speed = 2000,
108	 .n_aochan = 2,
109	 .aobits = 12,
110	 .ao_fifo_depth = 2048,
111	 .ao_range_table = &range_bipolar10,
112	 .ao_unipolar = 0,
113	 .ao_speed = 1176,
114	 .num_p0_dio_channels = 8,
115	 .has_8255 = 0,
116	 .caldac = {ad8804_debug},	/* verified */
117	 },
118	{.device_id = 0x075e,
119	 .name = "DAQCard-6024E",	/* specs incorrect! */
120	 .n_adchan = 16,
121	 .adbits = 12,
122	 .ai_fifo_depth = 1024,
123	 .alwaysdither = 0,
124	 .gainlkup = ai_gain_4,
125	 .ai_speed = 5000,
126	 .n_aochan = 2,
127	 .aobits = 12,
128	 .ao_fifo_depth = 0,
129	 .ao_range_table = &range_bipolar10,
130	 .ao_unipolar = 0,
131	 .ao_speed = 1000000,
132	 .num_p0_dio_channels = 8,
133	 .has_8255 = 0,
134	 .caldac = {ad8804_debug},
135	 },
136	{.device_id = 0x0245,
137	 .name = "DAQCard-6036E",	/* specs incorrect! */
138	 .n_adchan = 16,
139	 .adbits = 16,
140	 .ai_fifo_depth = 1024,
141	 .alwaysdither = 1,
142	 .gainlkup = ai_gain_4,
143	 .ai_speed = 5000,
144	 .n_aochan = 2,
145	 .aobits = 16,
146	 .ao_fifo_depth = 0,
147	 .ao_range_table = &range_bipolar10,
148	 .ao_unipolar = 0,
149	 .ao_speed = 1000000,
150	 .num_p0_dio_channels = 8,
151	 .has_8255 = 0,
152	 .caldac = {ad8804_debug},
153	 },
154#if 0
155	{.device_id = 0x0000,	/* unknown */
156	 .name = "DAQCard-6715",
157	 .n_adchan = 0,
158	 .n_aochan = 8,
159	 .aobits = 12,
160	 .ao_671x = 8192,
161	 .num_p0_dio_channels = 8,
162	 .caldac = {mb88341, mb88341},
163	 },
164#endif
165	/* N.B. Update ni_mio_cs_ids[] when entries added above. */
166};
167
168#define interrupt_pin(a)	0
169
170#define IRQ_POLARITY 1
171
172#define NI_E_IRQ_FLAGS		IRQF_SHARED
173
174struct ni_private {
175
176	struct pcmcia_device *link;
177
178 NI_PRIVATE_COMMON};
179
180#define devpriv ((struct ni_private *)dev->private)
181
182/* How we access registers */
183
184#define ni_writel(a, b)		(outl((a), (b)+dev->iobase))
185#define ni_readl(a)		(inl((a)+dev->iobase))
186#define ni_writew(a, b)		(outw((a), (b)+dev->iobase))
187#define ni_readw(a)		(inw((a)+dev->iobase))
188#define ni_writeb(a, b)		(outb((a), (b)+dev->iobase))
189#define ni_readb(a)		(inb((a)+dev->iobase))
190
191/* How we access windowed registers */
192
193/* We automatically take advantage of STC registers that can be
194 * read/written directly in the I/O space of the board.  The
195 * DAQCard devices map the low 8 STC registers to iobase+addr*2. */
196
197static void mio_cs_win_out(struct comedi_device *dev, uint16_t data, int addr)
198{
199	unsigned long flags;
200
201	spin_lock_irqsave(&devpriv->window_lock, flags);
202	if (addr < 8) {
203		ni_writew(data, addr * 2);
204	} else {
205		ni_writew(addr, Window_Address);
206		ni_writew(data, Window_Data);
207	}
208	spin_unlock_irqrestore(&devpriv->window_lock, flags);
209}
210
211static uint16_t mio_cs_win_in(struct comedi_device *dev, int addr)
212{
213	unsigned long flags;
214	uint16_t ret;
215
216	spin_lock_irqsave(&devpriv->window_lock, flags);
217	if (addr < 8) {
218		ret = ni_readw(addr * 2);
219	} else {
220		ni_writew(addr, Window_Address);
221		ret = ni_readw(Window_Data);
222	}
223	spin_unlock_irqrestore(&devpriv->window_lock, flags);
224
225	return ret;
226}
227
228static int mio_cs_attach(struct comedi_device *dev,
229			 struct comedi_devconfig *it);
230static int mio_cs_detach(struct comedi_device *dev);
231static struct comedi_driver driver_ni_mio_cs = {
232	.driver_name = "ni_mio_cs",
233	.module = THIS_MODULE,
234	.attach = mio_cs_attach,
235	.detach = mio_cs_detach,
236};
237
238#include "ni_mio_common.c"
239
240static int ni_getboardtype(struct comedi_device *dev,
241			   struct pcmcia_device *link);
242
243/* clean up allocated resources */
244/* called when driver is removed */
245static int mio_cs_detach(struct comedi_device *dev)
246{
247	mio_common_detach(dev);
248
249	/* PCMCIA layer frees the IO region */
250
251	if (dev->irq)
252		free_irq(dev->irq, dev);
253
254	return 0;
255}
256
257static void mio_cs_config(struct pcmcia_device *link);
258static void cs_release(struct pcmcia_device *link);
259static void cs_detach(struct pcmcia_device *);
260
261static struct pcmcia_device *cur_dev = NULL;
262
263static int cs_attach(struct pcmcia_device *link)
264{
265	cur_dev = link;
266
267	mio_cs_config(link);
268
269	return 0;
270}
271
272static void cs_release(struct pcmcia_device *link)
273{
274	pcmcia_disable_device(link);
275}
276
277static void cs_detach(struct pcmcia_device *link)
278{
279	DPRINTK("cs_detach(link=%p)\n", link);
280
281	cs_release(link);
282}
283
284static int mio_cs_suspend(struct pcmcia_device *link)
285{
286	DPRINTK("pm suspend\n");
287
288	return 0;
289}
290
291static int mio_cs_resume(struct pcmcia_device *link)
292{
293	DPRINTK("pm resume\n");
294	return 0;
295}
296
297
298static int mio_pcmcia_config_loop(struct pcmcia_device *p_dev, void *priv_data)
299{
300	int base, ret;
301
302	p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
303	p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_16;
304
305	for (base = 0x000; base < 0x400; base += 0x20) {
306		p_dev->resource[0]->start = base;
307		ret = pcmcia_request_io(p_dev);
308		if (!ret)
309			return 0;
310	}
311	return -ENODEV;
312}
313
314
315static void mio_cs_config(struct pcmcia_device *link)
316{
317	int ret;
318
319	DPRINTK("mio_cs_config(link=%p)\n", link);
320	link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
321
322	ret = pcmcia_loop_config(link, mio_pcmcia_config_loop, NULL);
323	if (ret) {
324		dev_warn(&link->dev, "no configuration found\n");
325		return;
326	}
327
328	if (!link->irq)
329		dev_info(&link->dev, "no IRQ available\n");
330
331	ret = pcmcia_enable_device(link);
332}
333
334static int mio_cs_attach(struct comedi_device *dev, struct comedi_devconfig *it)
335{
336	struct pcmcia_device *link;
337	unsigned int irq;
338	int ret;
339
340	DPRINTK("mio_cs_attach(dev=%p,it=%p)\n", dev, it);
341
342	link = cur_dev;		/* XXX hack */
343	if (!link)
344		return -EIO;
345
346	dev->driver = &driver_ni_mio_cs;
347	dev->iobase = link->resource[0]->start;
348
349	irq = link->irq;
350
351	printk("comedi%d: %s: DAQCard: io 0x%04lx, irq %u, ",
352	       dev->minor, dev->driver->driver_name, dev->iobase, irq);
353
354#if 0
355	{
356		int i;
357
358		printk(" board fingerprint:");
359		for (i = 0; i < 32; i += 2) {
360			printk(" %04x %02x", inw(dev->iobase + i),
361			       inb(dev->iobase + i + 1));
362		}
363		printk("\n");
364		printk(" board fingerprint (windowed):");
365		for (i = 0; i < 10; i++)
366			printk(" 0x%04x", win_in(i));
367		printk("\n");
368	}
369#endif
370
371	dev->board_ptr = ni_boards + ni_getboardtype(dev, link);
372
373	printk(" %s", boardtype.name);
374	dev->board_name = boardtype.name;
375
376	ret = request_irq(irq, ni_E_interrupt, NI_E_IRQ_FLAGS,
377			  "ni_mio_cs", dev);
378	if (ret < 0) {
379		printk(" irq not available\n");
380		return -EINVAL;
381	}
382	dev->irq = irq;
383
384	/* allocate private area */
385	ret = ni_alloc_private(dev);
386	if (ret < 0)
387		return ret;
388
389	devpriv->stc_writew = &mio_cs_win_out;
390	devpriv->stc_readw = &mio_cs_win_in;
391	devpriv->stc_writel = &win_out2;
392	devpriv->stc_readl = &win_in2;
393
394	ret = ni_E_init(dev, it);
395
396	if (ret < 0)
397		return ret;
398
399	return 0;
400}
401
402static int ni_getboardtype(struct comedi_device *dev,
403			   struct pcmcia_device *link)
404{
405	int i;
406
407	for (i = 0; i < n_ni_boards; i++) {
408		if (ni_boards[i].device_id == link->card_id)
409			return i;
410	}
411
412	printk("unknown board 0x%04x -- pretend it is a ", link->card_id);
413
414	return 0;
415}
416
417#ifdef MODULE
418
419static const struct pcmcia_device_id ni_mio_cs_ids[] = {
420	PCMCIA_DEVICE_MANF_CARD(0x010b, 0x010d),	/* DAQCard-ai-16xe-50 */
421	PCMCIA_DEVICE_MANF_CARD(0x010b, 0x010c),	/* DAQCard-ai-16e-4 */
422	PCMCIA_DEVICE_MANF_CARD(0x010b, 0x02c4),	/* DAQCard-6062E */
423	PCMCIA_DEVICE_MANF_CARD(0x010b, 0x075e),	/* DAQCard-6024E */
424	PCMCIA_DEVICE_MANF_CARD(0x010b, 0x0245),	/* DAQCard-6036E */
425	PCMCIA_DEVICE_NULL
426};
427
428MODULE_DEVICE_TABLE(pcmcia, ni_mio_cs_ids);
429MODULE_AUTHOR("David A. Schleef <ds@schleef.org>");
430MODULE_DESCRIPTION("Comedi driver for National Instruments DAQCard E series");
431MODULE_LICENSE("GPL");
432
433struct pcmcia_driver ni_mio_cs_driver = {
434	.probe = &cs_attach,
435	.remove = &cs_detach,
436	.suspend = &mio_cs_suspend,
437	.resume = &mio_cs_resume,
438	.id_table = ni_mio_cs_ids,
439	.owner = THIS_MODULE,
440	.name = "ni_mio_cs",
441};
442
443int init_module(void)
444{
445	pcmcia_register_driver(&ni_mio_cs_driver);
446	comedi_driver_register(&driver_ni_mio_cs);
447	return 0;
448}
449
450void cleanup_module(void)
451{
452	pcmcia_unregister_driver(&ni_mio_cs_driver);
453#if 0
454	while (cur_dev != NULL)
455		cs_detach(cur_dev->handle);
456#endif
457	comedi_driver_unregister(&driver_ni_mio_cs);
458}
459#endif