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/cs.h>
51 #include <pcmcia/cistpl.h>
52 #include <pcmcia/cisreg.h>
53 #include <pcmcia/ds.h>
55 static struct pcmcia_device *pcmcia_cur_dev = NULL;
57 #define DIO700_SIZE 8 /* size of io region used by board */
59 static int dio700_attach(struct comedi_device *dev,
60 struct comedi_devconfig *it);
61 static int dio700_detach(struct comedi_device *dev);
63 enum dio700_bustype { pcmcia_bustype };
67 int device_id; /* device id for pcmcia board */
68 enum dio700_bustype bustype; /* PCMCIA */
69 int have_dio; /* have daqcard-700 dio */
70 /* function pointers so we can use inb/outb or readb/writeb */
72 unsigned int (*read_byte) (unsigned int address);
73 void (*write_byte) (unsigned int byte, unsigned int address);
76 static const struct dio700_board dio700_boards[] = {
78 .name = "daqcard-700",
79 /* 0x10b is manufacturer id, 0x4743 is device id */
81 .bustype = pcmcia_bustype,
86 /* 0x10b is manufacturer id, 0x4743 is device id */
88 .bustype = pcmcia_bustype,
94 * Useful for shorthand access to the particular board structure
96 #define thisboard ((const struct dio700_board *)dev->board_ptr)
98 struct dio700_private {
100 int data; /* number of data points left to be taken */
103 #define devpriv ((struct dio700_private *)dev->private)
105 static struct comedi_driver driver_dio700 = {
106 .driver_name = "ni_daq_700",
107 .module = THIS_MODULE,
108 .attach = dio700_attach,
109 .detach = dio700_detach,
110 .num_names = ARRAY_SIZE(dio700_boards),
111 .board_name = &dio700_boards[0].name,
112 .offset = sizeof(struct dio700_board),
115 /* the real driver routines */
124 struct subdev_700_struct {
125 unsigned long cb_arg;
126 int (*cb_func) (int, int, int, unsigned long);
130 #define CALLBACK_ARG (((struct subdev_700_struct *)s->private)->cb_arg)
131 #define CALLBACK_FUNC (((struct subdev_700_struct *)s->private)->cb_func)
132 #define subdevpriv ((struct subdev_700_struct *)s->private)
134 static void do_config(struct comedi_device *dev, struct comedi_subdevice *s);
136 void subdev_700_interrupt(struct comedi_device *dev, struct comedi_subdevice *s)
140 d = CALLBACK_FUNC(0, _700_DATA, 0, CALLBACK_ARG);
142 comedi_buf_put(s->async, d);
143 s->async->events |= COMEDI_CB_EOS;
145 comedi_event(dev, s);
147 EXPORT_SYMBOL(subdev_700_interrupt);
149 static int subdev_700_cb(int dir, int port, int data, unsigned long arg)
151 /* port is always A for output and B for input (8255 emu) */
152 unsigned long iobase = arg;
155 outb(data, iobase + DIO_W);
158 return inb(iobase + DIO_R);
162 static int subdev_700_insn(struct comedi_device *dev,
163 struct comedi_subdevice *s, struct comedi_insn *insn,
167 s->state &= ~data[0];
168 s->state |= (data[0] & data[1]);
171 CALLBACK_FUNC(1, _700_DATA, s->state & 0xff,
175 data[1] = s->state & 0xff;
176 data[1] |= CALLBACK_FUNC(0, _700_DATA, 0, CALLBACK_ARG) << 8;
181 static int subdev_700_insn_config(struct comedi_device *dev,
182 struct comedi_subdevice *s,
183 struct comedi_insn *insn, unsigned int *data)
187 case INSN_CONFIG_DIO_INPUT:
189 case INSN_CONFIG_DIO_OUTPUT:
191 case INSN_CONFIG_DIO_QUERY:
194 io_bits & (1 << CR_CHAN(insn->chanspec))) ? COMEDI_OUTPUT :
205 static void do_config(struct comedi_device *dev, struct comedi_subdevice *s)
206 { /* use powerup defaults */
210 static int subdev_700_cmdtest(struct comedi_device *dev,
211 struct comedi_subdevice *s,
212 struct comedi_cmd *cmd)
219 tmp = cmd->start_src;
220 cmd->start_src &= TRIG_NOW;
221 if (!cmd->start_src || tmp != cmd->start_src)
224 tmp = cmd->scan_begin_src;
225 cmd->scan_begin_src &= TRIG_EXT;
226 if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
229 tmp = cmd->convert_src;
230 cmd->convert_src &= TRIG_FOLLOW;
231 if (!cmd->convert_src || tmp != cmd->convert_src)
234 tmp = cmd->scan_end_src;
235 cmd->scan_end_src &= TRIG_COUNT;
236 if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
240 cmd->stop_src &= TRIG_NONE;
241 if (!cmd->stop_src || tmp != cmd->stop_src)
254 if (cmd->start_arg != 0) {
258 if (cmd->scan_begin_arg != 0) {
259 cmd->scan_begin_arg = 0;
262 if (cmd->convert_arg != 0) {
263 cmd->convert_arg = 0;
266 if (cmd->scan_end_arg != 1) {
267 cmd->scan_end_arg = 1;
270 if (cmd->stop_arg != 0) {
286 static int subdev_700_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
293 static int subdev_700_cancel(struct comedi_device *dev,
294 struct comedi_subdevice *s)
301 int subdev_700_init(struct comedi_device *dev, struct comedi_subdevice *s,
302 int (*cb) (int, int, int, unsigned long), unsigned long arg)
304 s->type = COMEDI_SUBD_DIO;
305 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
307 s->range_table = &range_digital;
310 s->private = kmalloc(sizeof(struct subdev_700_struct), GFP_KERNEL);
316 CALLBACK_FUNC = subdev_700_cb;
320 s->insn_bits = subdev_700_insn;
321 s->insn_config = subdev_700_insn_config;
329 EXPORT_SYMBOL(subdev_700_init);
331 int subdev_700_init_irq(struct comedi_device *dev, struct comedi_subdevice *s,
332 int (*cb) (int, int, int, unsigned long),
337 ret = subdev_700_init(dev, s, cb, arg);
341 s->do_cmdtest = subdev_700_cmdtest;
342 s->do_cmd = subdev_700_cmd;
343 s->cancel = subdev_700_cancel;
345 subdevpriv->have_irq = 1;
349 EXPORT_SYMBOL(subdev_700_init_irq);
351 void subdev_700_cleanup(struct comedi_device *dev, struct comedi_subdevice *s)
354 if (subdevpriv->have_irq)
358 EXPORT_SYMBOL(subdev_700_cleanup);
360 static int dio700_attach(struct comedi_device *dev, struct comedi_devconfig *it)
362 struct comedi_subdevice *s;
363 unsigned long iobase = 0;
365 unsigned int irq = 0;
367 struct pcmcia_device *link;
369 /* allocate and initialize dev->private */
370 if (alloc_private(dev, sizeof(struct dio700_private)) < 0)
373 /* get base address, irq etc. based on bustype */
374 switch (thisboard->bustype) {
376 link = pcmcia_cur_dev; /* XXX hack */
379 iobase = link->resource[0]->start;
385 printk("bug! couldn't determine board type\n");
389 printk("comedi%d: ni_daq_700: %s, io 0x%lx", dev->minor,
390 thisboard->name, iobase);
393 printk(", irq %u", irq);
400 printk("io base address is zero!\n");
404 dev->iobase = iobase;
411 dev->board_name = thisboard->name;
413 if (alloc_subdevices(dev, 1) < 0)
416 /* DAQCard-700 dio */
417 s = dev->subdevices + 0;
418 subdev_700_init(dev, s, NULL, dev->iobase);
423 static int dio700_detach(struct comedi_device *dev)
425 printk("comedi%d: ni_daq_700: cs-remove\n", dev->minor);
428 subdev_700_cleanup(dev, dev->subdevices + 0);
430 if (thisboard->bustype != pcmcia_bustype && dev->iobase)
431 release_region(dev->iobase, DIO700_SIZE);
433 free_irq(dev->irq, dev);
438 /* PCMCIA crap -- watch your words, please! */
440 static void dio700_config(struct pcmcia_device *link);
441 static void dio700_release(struct pcmcia_device *link);
442 static int dio700_cs_suspend(struct pcmcia_device *p_dev);
443 static int dio700_cs_resume(struct pcmcia_device *p_dev);
446 The attach() and detach() entry points are used to create and destroy
447 "instances" of the driver, where each instance represents everything
448 needed to manage one actual PCMCIA card.
451 static int dio700_cs_attach(struct pcmcia_device *);
452 static void dio700_cs_detach(struct pcmcia_device *);
455 You'll also need to prototype all the functions that will actually
456 be used to talk to your device. See 'memory_cs' for a good example
457 of a fully self-sufficient driver; the other drivers rely more or
458 less on other parts of the kernel.
461 struct local_info_t {
462 struct pcmcia_device *link;
464 struct bus_operations *bus;
467 /*======================================================================
469 dio700_cs_attach() creates an "instance" of the driver, allocating
470 local data structures for one device. The device is registered
473 The dev_link structure is initialized, but we don't actually
474 configure the card at this point -- we wait until we receive a
475 card insertion event.
477 ======================================================================*/
479 static int dio700_cs_attach(struct pcmcia_device *link)
481 struct local_info_t *local;
483 printk(KERN_INFO "ni_daq_700: cs-attach\n");
485 dev_dbg(&link->dev, "dio700_cs_attach()\n");
487 /* Allocate space for private device-specific data */
488 local = kzalloc(sizeof(struct local_info_t), GFP_KERNEL);
495 General socket configuration defaults can go here. In this
496 client, we assume very little, and rely on the CIS for almost
497 everything. In most clients, many details (i.e., number, sizes,
498 and attributes of IO windows) are fixed by the nature of the
499 device, and can be hard-wired here.
501 link->conf.Attributes = 0;
502 link->conf.IntType = INT_MEMORY_AND_IO;
504 pcmcia_cur_dev = link;
509 } /* dio700_cs_attach */
511 /*======================================================================
513 This deletes a driver "instance". The device is de-registered
514 with Card Services. If it has been released, all local data
515 structures are freed. Otherwise, the structures will be freed
516 when the device is released.
518 ======================================================================*/
520 static void dio700_cs_detach(struct pcmcia_device *link)
523 printk(KERN_INFO "ni_daq_700: cs-detach!\n");
525 dev_dbg(&link->dev, "dio700_cs_detach\n");
527 ((struct local_info_t *)link->priv)->stop = 1;
528 dio700_release(link);
530 /* This points to the parent struct local_info_t struct */
533 } /* dio700_cs_detach */
535 /*======================================================================
537 dio700_config() is scheduled to run after a CARD_INSERTION event
538 is received, to configure the PCMCIA socket, and to make the
539 device available to the system.
541 ======================================================================*/
543 static int dio700_pcmcia_config_loop(struct pcmcia_device *p_dev,
544 cistpl_cftable_entry_t *cfg,
545 cistpl_cftable_entry_t *dflt,
552 /* Does this card need audio output? */
553 if (cfg->flags & CISTPL_CFTABLE_AUDIO) {
554 p_dev->conf.Attributes |= CONF_ENABLE_SPKR;
555 p_dev->conf.Status = CCSR_AUDIO_ENA;
558 /* Do we need to allocate an interrupt? */
559 p_dev->conf.Attributes |= CONF_ENABLE_IRQ;
561 /* IO window settings */
562 p_dev->resource[0]->end = p_dev->resource[1]->end = 0;
563 if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
564 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
565 p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK;
566 p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
567 p_dev->resource[0]->flags |=
568 pcmcia_io_cfg_data_width(io->flags);
569 p_dev->resource[0]->start = io->win[0].base;
570 p_dev->resource[0]->end = io->win[0].len;
572 p_dev->resource[1]->flags = p_dev->resource[0]->flags;
573 p_dev->resource[1]->start = io->win[1].base;
574 p_dev->resource[1]->end = io->win[1].len;
576 /* This reserves IO space but doesn't actually enable it */
577 if (pcmcia_request_io(p_dev) != 0)
581 /* If we got this far, we're cool! */
585 static void dio700_config(struct pcmcia_device *link)
590 printk(KERN_INFO "ni_daq_700: cs-config\n");
592 dev_dbg(&link->dev, "dio700_config\n");
594 ret = pcmcia_loop_config(link, dio700_pcmcia_config_loop, NULL);
596 dev_warn(&link->dev, "no configuration found\n");
604 This actually configures the PCMCIA socket -- setting up
605 the I/O windows and the interrupt mapping, and putting the
606 card and host interface into "Memory and IO" mode.
608 ret = pcmcia_request_configuration(link, &link->conf);
612 /* Finally, report what we've done */
613 dev_info(&link->dev, "index 0x%02x", link->conf.ConfigIndex);
614 if (link->conf.Attributes & CONF_ENABLE_IRQ)
615 printk(", irq %d", link->irq);
616 if (link->resource[0])
617 printk(", io %pR", link->resource[0]);
618 if (link->resource[1])
619 printk(" & %pR", link->resource[1]);
625 printk(KERN_INFO "ni_daq_700 cs failed");
626 dio700_release(link);
628 } /* dio700_config */
630 static void dio700_release(struct pcmcia_device *link)
632 dev_dbg(&link->dev, "dio700_release\n");
634 pcmcia_disable_device(link);
635 } /* dio700_release */
637 /*======================================================================
639 The card status event handler. Mostly, this schedules other
640 stuff to run after an event is received.
642 When a CARD_REMOVAL event is received, we immediately set a
643 private flag to block future accesses to this device. All the
644 functions that actually access the device should check this flag
645 to make sure the card is still present.
647 ======================================================================*/
649 static int dio700_cs_suspend(struct pcmcia_device *link)
651 struct local_info_t *local = link->priv;
653 /* Mark the device as stopped, to block IO until later */
656 } /* dio700_cs_suspend */
658 static int dio700_cs_resume(struct pcmcia_device *link)
660 struct local_info_t *local = link->priv;
664 } /* dio700_cs_resume */
666 /*====================================================================*/
668 static struct pcmcia_device_id dio700_cs_ids[] = {
669 /* N.B. These IDs should match those in dio700_boards */
670 PCMCIA_DEVICE_MANF_CARD(0x010b, 0x4743), /* daqcard-700 */
675 MODULE_DEVICE_TABLE(pcmcia, dio700_cs_ids);
676 MODULE_AUTHOR("Fred Brooks <nsaspook@nsaspook.com>");
677 MODULE_DESCRIPTION("Comedi driver for National Instruments "
678 "PCMCIA DAQCard-700 DIO");
679 MODULE_LICENSE("GPL");
681 struct pcmcia_driver dio700_cs_driver = {
682 .probe = dio700_cs_attach,
683 .remove = dio700_cs_detach,
684 .suspend = dio700_cs_suspend,
685 .resume = dio700_cs_resume,
686 .id_table = dio700_cs_ids,
687 .owner = THIS_MODULE,
689 .name = "ni_daq_700",
693 static int __init init_dio700_cs(void)
695 pcmcia_register_driver(&dio700_cs_driver);
699 static void __exit exit_dio700_cs(void)
701 pr_debug("ni_daq_700: unloading\n");
702 pcmcia_unregister_driver(&dio700_cs_driver);
705 int __init init_module(void)
709 ret = init_dio700_cs();
713 return comedi_driver_register(&driver_dio700);
716 void __exit cleanup_module(void)
719 comedi_driver_unregister(&driver_dio700);