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
)
292 static int subdev_700_cancel(struct comedi_device
*dev
,
293 struct comedi_subdevice
*s
)
299 int subdev_700_init(struct comedi_device
*dev
, struct comedi_subdevice
*s
,
300 int (*cb
) (int, int, int, unsigned long), unsigned long arg
)
302 s
->type
= COMEDI_SUBD_DIO
;
303 s
->subdev_flags
= SDF_READABLE
| SDF_WRITABLE
;
305 s
->range_table
= &range_digital
;
308 s
->private = kmalloc(sizeof(struct subdev_700_struct
), GFP_KERNEL
);
314 CALLBACK_FUNC
= subdev_700_cb
;
318 s
->insn_bits
= subdev_700_insn
;
319 s
->insn_config
= subdev_700_insn_config
;
327 EXPORT_SYMBOL(subdev_700_init
);
329 int subdev_700_init_irq(struct comedi_device
*dev
, struct comedi_subdevice
*s
,
330 int (*cb
) (int, int, int, unsigned long),
335 ret
= subdev_700_init(dev
, s
, cb
, arg
);
339 s
->do_cmdtest
= subdev_700_cmdtest
;
340 s
->do_cmd
= subdev_700_cmd
;
341 s
->cancel
= subdev_700_cancel
;
343 subdevpriv
->have_irq
= 1;
347 EXPORT_SYMBOL(subdev_700_init_irq
);
349 void subdev_700_cleanup(struct comedi_device
*dev
, struct comedi_subdevice
*s
)
352 if (subdevpriv
->have_irq
)
356 EXPORT_SYMBOL(subdev_700_cleanup
);
358 static int dio700_attach(struct comedi_device
*dev
, struct comedi_devconfig
*it
)
360 struct comedi_subdevice
*s
;
361 unsigned long iobase
= 0;
363 unsigned int irq
= 0;
365 struct pcmcia_device
*link
;
367 /* allocate and initialize dev->private */
368 if (alloc_private(dev
, sizeof(struct dio700_private
)) < 0)
371 /* get base address, irq etc. based on bustype */
372 switch (thisboard
->bustype
) {
374 link
= pcmcia_cur_dev
;
377 iobase
= link
->resource
[0]->start
;
383 printk("bug! couldn't determine board type\n");
387 printk("comedi%d: ni_daq_700: %s, io 0x%lx", dev
->minor
,
388 thisboard
->name
, iobase
);
391 printk(", irq %u", irq
);
398 printk("io base address is zero!\n");
402 dev
->iobase
= iobase
;
409 dev
->board_name
= thisboard
->name
;
411 if (alloc_subdevices(dev
, 1) < 0)
414 /* DAQCard-700 dio */
415 s
= dev
->subdevices
+ 0;
416 subdev_700_init(dev
, s
, NULL
, dev
->iobase
);
421 static int dio700_detach(struct comedi_device
*dev
)
423 printk("comedi%d: ni_daq_700: cs-remove\n", dev
->minor
);
426 subdev_700_cleanup(dev
, dev
->subdevices
+ 0);
428 if (thisboard
->bustype
!= pcmcia_bustype
&& dev
->iobase
)
429 release_region(dev
->iobase
, DIO700_SIZE
);
431 free_irq(dev
->irq
, dev
);
436 /* PCMCIA crap -- watch your words, please! */
438 static void dio700_config(struct pcmcia_device
*link
);
439 static void dio700_release(struct pcmcia_device
*link
);
440 static int dio700_cs_suspend(struct pcmcia_device
*p_dev
);
441 static int dio700_cs_resume(struct pcmcia_device
*p_dev
);
444 The attach() and detach() entry points are used to create and destroy
445 "instances" of the driver, where each instance represents everything
446 needed to manage one actual PCMCIA card.
449 static int dio700_cs_attach(struct pcmcia_device
*);
450 static void dio700_cs_detach(struct pcmcia_device
*);
453 You'll also need to prototype all the functions that will actually
454 be used to talk to your device. See 'memory_cs' for a good example
455 of a fully self-sufficient driver; the other drivers rely more or
456 less on other parts of the kernel.
459 struct local_info_t
{
460 struct pcmcia_device
*link
;
462 struct bus_operations
*bus
;
465 /*======================================================================
467 dio700_cs_attach() creates an "instance" of the driver, allocating
468 local data structures for one device. The device is registered
471 The dev_link structure is initialized, but we don't actually
472 configure the card at this point -- we wait until we receive a
473 card insertion event.
475 ======================================================================*/
477 static int dio700_cs_attach(struct pcmcia_device
*link
)
479 struct local_info_t
*local
;
481 printk(KERN_INFO
"ni_daq_700: cs-attach\n");
483 dev_dbg(&link
->dev
, "dio700_cs_attach()\n");
485 /* Allocate space for private device-specific data */
486 local
= kzalloc(sizeof(struct local_info_t
), GFP_KERNEL
);
493 General socket configuration defaults can go here. In this
494 client, we assume very little, and rely on the CIS for almost
495 everything. In most clients, many details (i.e., number, sizes,
496 and attributes of IO windows) are fixed by the nature of the
497 device, and can be hard-wired here.
499 link
->conf
.Attributes
= 0;
500 link
->conf
.IntType
= INT_MEMORY_AND_IO
;
502 pcmcia_cur_dev
= link
;
507 } /* dio700_cs_attach */
509 /*======================================================================
511 This deletes a driver "instance". The device is de-registered
512 with Card Services. If it has been released, all local data
513 structures are freed. Otherwise, the structures will be freed
514 when the device is released.
516 ======================================================================*/
518 static void dio700_cs_detach(struct pcmcia_device
*link
)
521 printk(KERN_INFO
"ni_daq_700: cs-detach!\n");
523 dev_dbg(&link
->dev
, "dio700_cs_detach\n");
525 ((struct local_info_t
*)link
->priv
)->stop
= 1;
526 dio700_release(link
);
528 /* This points to the parent struct local_info_t struct */
531 } /* dio700_cs_detach */
533 /*======================================================================
535 dio700_config() is scheduled to run after a CARD_INSERTION event
536 is received, to configure the PCMCIA socket, and to make the
537 device available to the system.
539 ======================================================================*/
541 static int dio700_pcmcia_config_loop(struct pcmcia_device
*p_dev
,
542 cistpl_cftable_entry_t
*cfg
,
543 cistpl_cftable_entry_t
*dflt
,
550 /* Does this card need audio output? */
551 if (cfg
->flags
& CISTPL_CFTABLE_AUDIO
) {
552 p_dev
->conf
.Attributes
|= CONF_ENABLE_SPKR
;
553 p_dev
->conf
.Status
= CCSR_AUDIO_ENA
;
556 /* Do we need to allocate an interrupt? */
557 p_dev
->conf
.Attributes
|= CONF_ENABLE_IRQ
;
559 /* IO window settings */
560 p_dev
->resource
[0]->end
= p_dev
->resource
[1]->end
= 0;
561 if ((cfg
->io
.nwin
> 0) || (dflt
->io
.nwin
> 0)) {
562 cistpl_io_t
*io
= (cfg
->io
.nwin
) ? &cfg
->io
: &dflt
->io
;
563 p_dev
->io_lines
= io
->flags
& CISTPL_IO_LINES_MASK
;
564 p_dev
->resource
[0]->flags
&= ~IO_DATA_PATH_WIDTH
;
565 p_dev
->resource
[0]->flags
|=
566 pcmcia_io_cfg_data_width(io
->flags
);
567 p_dev
->resource
[0]->start
= io
->win
[0].base
;
568 p_dev
->resource
[0]->end
= io
->win
[0].len
;
570 p_dev
->resource
[1]->flags
= p_dev
->resource
[0]->flags
;
571 p_dev
->resource
[1]->start
= io
->win
[1].base
;
572 p_dev
->resource
[1]->end
= io
->win
[1].len
;
574 /* This reserves IO space but doesn't actually enable it */
575 if (pcmcia_request_io(p_dev
) != 0)
579 /* If we got this far, we're cool! */
583 static void dio700_config(struct pcmcia_device
*link
)
588 printk(KERN_INFO
"ni_daq_700: cs-config\n");
590 dev_dbg(&link
->dev
, "dio700_config\n");
592 ret
= pcmcia_loop_config(link
, dio700_pcmcia_config_loop
, NULL
);
594 dev_warn(&link
->dev
, "no configuration found\n");
602 This actually configures the PCMCIA socket -- setting up
603 the I/O windows and the interrupt mapping, and putting the
604 card and host interface into "Memory and IO" mode.
606 ret
= pcmcia_request_configuration(link
, &link
->conf
);
610 /* Finally, report what we've done */
611 dev_info(&link
->dev
, "index 0x%02x", link
->conf
.ConfigIndex
);
612 if (link
->conf
.Attributes
& CONF_ENABLE_IRQ
)
613 printk(", irq %d", link
->irq
);
614 if (link
->resource
[0])
615 printk(", io %pR", link
->resource
[0]);
616 if (link
->resource
[1])
617 printk(" & %pR", link
->resource
[1]);
623 printk(KERN_INFO
"ni_daq_700 cs failed");
624 dio700_release(link
);
626 } /* dio700_config */
628 static void dio700_release(struct pcmcia_device
*link
)
630 dev_dbg(&link
->dev
, "dio700_release\n");
632 pcmcia_disable_device(link
);
633 } /* dio700_release */
635 /*======================================================================
637 The card status event handler. Mostly, this schedules other
638 stuff to run after an event is received.
640 When a CARD_REMOVAL event is received, we immediately set a
641 private flag to block future accesses to this device. All the
642 functions that actually access the device should check this flag
643 to make sure the card is still present.
645 ======================================================================*/
647 static int dio700_cs_suspend(struct pcmcia_device
*link
)
649 struct local_info_t
*local
= link
->priv
;
651 /* Mark the device as stopped, to block IO until later */
654 } /* dio700_cs_suspend */
656 static int dio700_cs_resume(struct pcmcia_device
*link
)
658 struct local_info_t
*local
= link
->priv
;
662 } /* dio700_cs_resume */
664 /*====================================================================*/
666 static struct pcmcia_device_id dio700_cs_ids
[] = {
667 /* N.B. These IDs should match those in dio700_boards */
668 PCMCIA_DEVICE_MANF_CARD(0x010b, 0x4743), /* daqcard-700 */
673 MODULE_DEVICE_TABLE(pcmcia
, dio700_cs_ids
);
674 MODULE_AUTHOR("Fred Brooks <nsaspook@nsaspook.com>");
675 MODULE_DESCRIPTION("Comedi driver for National Instruments "
676 "PCMCIA DAQCard-700 DIO");
677 MODULE_LICENSE("GPL");
679 struct pcmcia_driver dio700_cs_driver
= {
680 .probe
= dio700_cs_attach
,
681 .remove
= dio700_cs_detach
,
682 .suspend
= dio700_cs_suspend
,
683 .resume
= dio700_cs_resume
,
684 .id_table
= dio700_cs_ids
,
685 .owner
= THIS_MODULE
,
687 .name
= "ni_daq_700",
691 static int __init
init_dio700_cs(void)
693 pcmcia_register_driver(&dio700_cs_driver
);
697 static void __exit
exit_dio700_cs(void)
699 pr_debug("ni_daq_700: unloading\n");
700 pcmcia_unregister_driver(&dio700_cs_driver
);
703 int __init
init_module(void)
707 ret
= init_dio700_cs();
711 return comedi_driver_register(&driver_dio700
);
714 void __exit
cleanup_module(void)
717 comedi_driver_unregister(&driver_dio700
);