2 * comedi/drivers/ni_daq_700.c
3 * Driver for DAQCard-700 DIO only
6 * COMEDI - Linux Control and Measurement Device Interface
7 * Copyright (C) 1998 David A. Schleef <ds@schleef.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 Description: National Instruments PCMCIA DAQCard-700 DIO only
28 Author: Fred Brooks <nsaspook@nsaspook.com>,
29 based on ni_daq_dio24 by Daniel Vecino Castel <dvecino@able.es>
30 Devices: [National Instruments] PCMCIA DAQ-Card-700 (ni_daq_700)
32 Updated: Thu, 21 Feb 2008 12:07:20 +0000
34 The daqcard-700 appears in Comedi as a single digital I/O subdevice with
35 16 channels. The channel 0 corresponds to the daqcard-700's output
36 port, bit 0; channel 8 corresponds to the input port, bit 0.
38 Direction configuration: channels 0-7 output, 8-15 input (8225 device
39 emu as port A output, port B input, port C N/A).
41 IRQ is assigned but not used.
44 #include <linux/interrupt.h>
45 #include <linux/slab.h>
46 #include "../comedidev.h"
48 #include <linux/ioport.h>
50 #include <pcmcia/cistpl.h>
51 #include <pcmcia/cisreg.h>
52 #include <pcmcia/ds.h>
54 static struct pcmcia_device *pcmcia_cur_dev = NULL;
56 #define DIO700_SIZE 8 /* size of io region used by board */
58 static int dio700_attach(struct comedi_device *dev,
59 struct comedi_devconfig *it);
60 static int dio700_detach(struct comedi_device *dev);
62 enum dio700_bustype { pcmcia_bustype };
66 int device_id; /* device id for pcmcia board */
67 enum dio700_bustype bustype; /* PCMCIA */
68 int have_dio; /* have daqcard-700 dio */
69 /* function pointers so we can use inb/outb or readb/writeb */
71 unsigned int (*read_byte) (unsigned int address);
72 void (*write_byte) (unsigned int byte, unsigned int address);
75 static const struct dio700_board dio700_boards[] = {
77 .name = "daqcard-700",
78 /* 0x10b is manufacturer id, 0x4743 is device id */
80 .bustype = pcmcia_bustype,
85 /* 0x10b is manufacturer id, 0x4743 is device id */
87 .bustype = pcmcia_bustype,
93 * Useful for shorthand access to the particular board structure
95 #define thisboard ((const struct dio700_board *)dev->board_ptr)
97 struct dio700_private {
99 int data; /* number of data points left to be taken */
102 #define devpriv ((struct dio700_private *)dev->private)
104 static struct comedi_driver driver_dio700 = {
105 .driver_name = "ni_daq_700",
106 .module = THIS_MODULE,
107 .attach = dio700_attach,
108 .detach = dio700_detach,
109 .num_names = ARRAY_SIZE(dio700_boards),
110 .board_name = &dio700_boards[0].name,
111 .offset = sizeof(struct dio700_board),
114 /* the real driver routines */
123 struct subdev_700_struct {
124 unsigned long cb_arg;
125 int (*cb_func) (int, int, int, unsigned long);
129 #define CALLBACK_ARG (((struct subdev_700_struct *)s->private)->cb_arg)
130 #define CALLBACK_FUNC (((struct subdev_700_struct *)s->private)->cb_func)
131 #define subdevpriv ((struct subdev_700_struct *)s->private)
133 static void do_config(struct comedi_device *dev, struct comedi_subdevice *s);
135 void subdev_700_interrupt(struct comedi_device *dev, struct comedi_subdevice *s)
139 d = CALLBACK_FUNC(0, _700_DATA, 0, CALLBACK_ARG);
141 comedi_buf_put(s->async, d);
142 s->async->events |= COMEDI_CB_EOS;
144 comedi_event(dev, s);
146 EXPORT_SYMBOL(subdev_700_interrupt);
148 static int subdev_700_cb(int dir, int port, int data, unsigned long arg)
150 /* port is always A for output and B for input (8255 emu) */
151 unsigned long iobase = arg;
154 outb(data, iobase + DIO_W);
157 return inb(iobase + DIO_R);
161 static int subdev_700_insn(struct comedi_device *dev,
162 struct comedi_subdevice *s, struct comedi_insn *insn,
166 s->state &= ~data[0];
167 s->state |= (data[0] & data[1]);
170 CALLBACK_FUNC(1, _700_DATA, s->state & 0xff,
174 data[1] = s->state & 0xff;
175 data[1] |= CALLBACK_FUNC(0, _700_DATA, 0, CALLBACK_ARG) << 8;
180 static int subdev_700_insn_config(struct comedi_device *dev,
181 struct comedi_subdevice *s,
182 struct comedi_insn *insn, unsigned int *data)
186 case INSN_CONFIG_DIO_INPUT:
188 case INSN_CONFIG_DIO_OUTPUT:
190 case INSN_CONFIG_DIO_QUERY:
193 io_bits & (1 << CR_CHAN(insn->chanspec))) ? COMEDI_OUTPUT :
204 static void do_config(struct comedi_device *dev, struct comedi_subdevice *s)
205 { /* use powerup defaults */
209 static int subdev_700_cmdtest(struct comedi_device *dev,
210 struct comedi_subdevice *s,
211 struct comedi_cmd *cmd)
218 tmp = cmd->start_src;
219 cmd->start_src &= TRIG_NOW;
220 if (!cmd->start_src || tmp != cmd->start_src)
223 tmp = cmd->scan_begin_src;
224 cmd->scan_begin_src &= TRIG_EXT;
225 if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
228 tmp = cmd->convert_src;
229 cmd->convert_src &= TRIG_FOLLOW;
230 if (!cmd->convert_src || tmp != cmd->convert_src)
233 tmp = cmd->scan_end_src;
234 cmd->scan_end_src &= TRIG_COUNT;
235 if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
239 cmd->stop_src &= TRIG_NONE;
240 if (!cmd->stop_src || tmp != cmd->stop_src)
253 if (cmd->start_arg != 0) {
257 if (cmd->scan_begin_arg != 0) {
258 cmd->scan_begin_arg = 0;
261 if (cmd->convert_arg != 0) {
262 cmd->convert_arg = 0;
265 if (cmd->scan_end_arg != 1) {
266 cmd->scan_end_arg = 1;
269 if (cmd->stop_arg != 0) {
285 static int subdev_700_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
292 static int subdev_700_cancel(struct comedi_device *dev,
293 struct comedi_subdevice *s)
300 int subdev_700_init(struct comedi_device *dev, struct comedi_subdevice *s,
301 int (*cb) (int, int, int, unsigned long), unsigned long arg)
303 s->type = COMEDI_SUBD_DIO;
304 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
306 s->range_table = &range_digital;
309 s->private = kmalloc(sizeof(struct subdev_700_struct), GFP_KERNEL);
315 CALLBACK_FUNC = subdev_700_cb;
319 s->insn_bits = subdev_700_insn;
320 s->insn_config = subdev_700_insn_config;
328 EXPORT_SYMBOL(subdev_700_init);
330 int subdev_700_init_irq(struct comedi_device *dev, struct comedi_subdevice *s,
331 int (*cb) (int, int, int, unsigned long),
336 ret = subdev_700_init(dev, s, cb, arg);
340 s->do_cmdtest = subdev_700_cmdtest;
341 s->do_cmd = subdev_700_cmd;
342 s->cancel = subdev_700_cancel;
344 subdevpriv->have_irq = 1;
348 EXPORT_SYMBOL(subdev_700_init_irq);
350 void subdev_700_cleanup(struct comedi_device *dev, struct comedi_subdevice *s)
353 if (subdevpriv->have_irq)
357 EXPORT_SYMBOL(subdev_700_cleanup);
359 static int dio700_attach(struct comedi_device *dev, struct comedi_devconfig *it)
361 struct comedi_subdevice *s;
362 unsigned long iobase = 0;
364 unsigned int irq = 0;
366 struct pcmcia_device *link;
368 /* allocate and initialize dev->private */
369 if (alloc_private(dev, sizeof(struct dio700_private)) < 0)
372 /* get base address, irq etc. based on bustype */
373 switch (thisboard->bustype) {
375 link = pcmcia_cur_dev; /* XXX hack */
378 iobase = link->resource[0]->start;
384 printk("bug! couldn't determine board type\n");
388 printk("comedi%d: ni_daq_700: %s, io 0x%lx", dev->minor,
389 thisboard->name, iobase);
392 printk(", irq %u", irq);
399 printk("io base address is zero!\n");
403 dev->iobase = iobase;
410 dev->board_name = thisboard->name;
412 if (alloc_subdevices(dev, 1) < 0)
415 /* DAQCard-700 dio */
416 s = dev->subdevices + 0;
417 subdev_700_init(dev, s, NULL, dev->iobase);
422 static int dio700_detach(struct comedi_device *dev)
424 printk("comedi%d: ni_daq_700: cs-remove\n", dev->minor);
427 subdev_700_cleanup(dev, dev->subdevices + 0);
429 if (thisboard->bustype != pcmcia_bustype && dev->iobase)
430 release_region(dev->iobase, DIO700_SIZE);
432 free_irq(dev->irq, dev);
437 /* PCMCIA crap -- watch your words, please! */
439 static void dio700_config(struct pcmcia_device *link);
440 static void dio700_release(struct pcmcia_device *link);
441 static int dio700_cs_suspend(struct pcmcia_device *p_dev);
442 static int dio700_cs_resume(struct pcmcia_device *p_dev);
445 The attach() and detach() entry points are used to create and destroy
446 "instances" of the driver, where each instance represents everything
447 needed to manage one actual PCMCIA card.
450 static int dio700_cs_attach(struct pcmcia_device *);
451 static void dio700_cs_detach(struct pcmcia_device *);
454 You'll also need to prototype all the functions that will actually
455 be used to talk to your device. See 'memory_cs' for a good example
456 of a fully self-sufficient driver; the other drivers rely more or
457 less on other parts of the kernel.
460 struct local_info_t {
461 struct pcmcia_device *link;
463 struct bus_operations *bus;
466 /*======================================================================
468 dio700_cs_attach() creates an "instance" of the driver, allocating
469 local data structures for one device. The device is registered
472 The dev_link structure is initialized, but we don't actually
473 configure the card at this point -- we wait until we receive a
474 card insertion event.
476 ======================================================================*/
478 static int dio700_cs_attach(struct pcmcia_device *link)
480 struct local_info_t *local;
482 printk(KERN_INFO "ni_daq_700: cs-attach\n");
484 dev_dbg(&link->dev, "dio700_cs_attach()\n");
486 /* Allocate space for private device-specific data */
487 local = kzalloc(sizeof(struct local_info_t), GFP_KERNEL);
493 pcmcia_cur_dev = link;
498 } /* dio700_cs_attach */
500 /*======================================================================
502 This deletes a driver "instance". The device is de-registered
503 with Card Services. If it has been released, all local data
504 structures are freed. Otherwise, the structures will be freed
505 when the device is released.
507 ======================================================================*/
509 static void dio700_cs_detach(struct pcmcia_device *link)
512 printk(KERN_INFO "ni_daq_700: cs-detach!\n");
514 dev_dbg(&link->dev, "dio700_cs_detach\n");
516 ((struct local_info_t *)link->priv)->stop = 1;
517 dio700_release(link);
519 /* This points to the parent struct local_info_t struct */
522 } /* dio700_cs_detach */
524 /*======================================================================
526 dio700_config() is scheduled to run after a CARD_INSERTION event
527 is received, to configure the PCMCIA socket, and to make the
528 device available to the system.
530 ======================================================================*/
532 static int dio700_pcmcia_config_loop(struct pcmcia_device *p_dev,
535 if (p_dev->config_index == 0)
538 return pcmcia_request_io(p_dev);
541 static void dio700_config(struct pcmcia_device *link)
546 printk(KERN_INFO "ni_daq_700: cs-config\n");
548 dev_dbg(&link->dev, "dio700_config\n");
550 link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_AUDIO |
553 ret = pcmcia_loop_config(link, dio700_pcmcia_config_loop, NULL);
555 dev_warn(&link->dev, "no configuration found\n");
563 This actually configures the PCMCIA socket -- setting up
564 the I/O windows and the interrupt mapping, and putting the
565 card and host interface into "Memory and IO" mode.
567 ret = pcmcia_enable_device(link);
574 printk(KERN_INFO "ni_daq_700 cs failed");
575 dio700_release(link);
577 } /* dio700_config */
579 static void dio700_release(struct pcmcia_device *link)
581 dev_dbg(&link->dev, "dio700_release\n");
583 pcmcia_disable_device(link);
584 } /* dio700_release */
586 /*======================================================================
588 The card status event handler. Mostly, this schedules other
589 stuff to run after an event is received.
591 When a CARD_REMOVAL event is received, we immediately set a
592 private flag to block future accesses to this device. All the
593 functions that actually access the device should check this flag
594 to make sure the card is still present.
596 ======================================================================*/
598 static int dio700_cs_suspend(struct pcmcia_device *link)
600 struct local_info_t *local = link->priv;
602 /* Mark the device as stopped, to block IO until later */
605 } /* dio700_cs_suspend */
607 static int dio700_cs_resume(struct pcmcia_device *link)
609 struct local_info_t *local = link->priv;
613 } /* dio700_cs_resume */
615 /*====================================================================*/
617 static struct pcmcia_device_id dio700_cs_ids[] = {
618 /* N.B. These IDs should match those in dio700_boards */
619 PCMCIA_DEVICE_MANF_CARD(0x010b, 0x4743), /* daqcard-700 */
624 MODULE_DEVICE_TABLE(pcmcia, dio700_cs_ids);
625 MODULE_AUTHOR("Fred Brooks <nsaspook@nsaspook.com>");
626 MODULE_DESCRIPTION("Comedi driver for National Instruments "
627 "PCMCIA DAQCard-700 DIO");
628 MODULE_LICENSE("GPL");
630 struct pcmcia_driver dio700_cs_driver = {
631 .probe = dio700_cs_attach,
632 .remove = dio700_cs_detach,
633 .suspend = dio700_cs_suspend,
634 .resume = dio700_cs_resume,
635 .id_table = dio700_cs_ids,
636 .owner = THIS_MODULE,
638 .name = "ni_daq_700",
642 static int __init init_dio700_cs(void)
644 pcmcia_register_driver(&dio700_cs_driver);
648 static void __exit exit_dio700_cs(void)
650 pr_debug("ni_daq_700: unloading\n");
651 pcmcia_unregister_driver(&dio700_cs_driver);
654 int __init init_module(void)
658 ret = init_dio700_cs();
662 return comedi_driver_register(&driver_dio700);
665 void __exit cleanup_module(void)
668 comedi_driver_unregister(&driver_dio700);