2 comedi/drivers/ni_daq_dio24.c
3 Driver for National Instruments PCMCIA DAQ-Card DIO-24
4 Copyright (C) 2002 Daniel Vecino Castel <dvecino@able.es>
6 PCMCIA crap at end of file is adapted from dummy_cs.c 1.31 2001/08/24 12:13:13
7 from the pcmcia package.
8 The initial developer of the pcmcia dummy_cs.c code is David A. Hinds
9 <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
10 are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2 of the License, or
15 (at your option) any later version.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 ************************************************************************
30 Description: National Instruments PCMCIA DAQ-Card DIO-24
31 Author: Daniel Vecino Castel <dvecino@able.es>
32 Devices: [National Instruments] PCMCIA DAQ-Card DIO-24 (ni_daq_dio24)
34 Updated: Thu, 07 Nov 2002 21:53:06 -0800
36 This is just a wrapper around the 8255.o driver to properly handle
40 /* #define LABPC_DEBUG *//* enable debugging messages */
43 #include <linux/interrupt.h>
44 #include <linux/slab.h>
45 #include "../comedidev.h"
47 #include <linux/ioport.h>
51 #include <pcmcia/cistpl.h>
52 #include <pcmcia/cisreg.h>
53 #include <pcmcia/ds.h>
55 static struct pcmcia_device
*pcmcia_cur_dev
;
57 #define DIO24_SIZE 4 /* size of io region used by board */
59 static int dio24_attach(struct comedi_device
*dev
, struct comedi_devconfig
*it
);
60 static void dio24_detach(struct comedi_device
*dev
);
62 enum dio24_bustype
{ pcmcia_bustype
};
64 struct dio24_board_struct
{
66 int device_id
; /* device id for pcmcia board */
67 enum dio24_bustype bustype
; /* PCMCIA */
68 int have_dio
; /* have 8255 chip */
69 /* function pointers so we can use inb/outb or readb/writeb as appropriate */
70 unsigned int (*read_byte
) (unsigned int address
);
71 void (*write_byte
) (unsigned int byte
, unsigned int address
);
74 static const struct dio24_board_struct dio24_boards
[] = {
76 .name
= "daqcard-dio24",
77 .device_id
= 0x475c, /* 0x10b is manufacturer id, 0x475c is device id */
78 .bustype
= pcmcia_bustype
,
82 .name
= "ni_daq_dio24",
83 .device_id
= 0x475c, /* 0x10b is manufacturer id, 0x475c is device id */
84 .bustype
= pcmcia_bustype
,
90 * Useful for shorthand access to the particular board structure
92 #define thisboard ((const struct dio24_board_struct *)dev->board_ptr)
94 struct dio24_private
{
96 int data
; /* number of data points left to be taken */
99 #define devpriv ((struct dio24_private *)dev->private)
101 static struct comedi_driver driver_dio24
= {
102 .driver_name
= "ni_daq_dio24",
103 .module
= THIS_MODULE
,
104 .attach
= dio24_attach
,
105 .detach
= dio24_detach
,
106 .num_names
= ARRAY_SIZE(dio24_boards
),
107 .board_name
= &dio24_boards
[0].name
,
108 .offset
= sizeof(struct dio24_board_struct
),
111 static int dio24_attach(struct comedi_device
*dev
, struct comedi_devconfig
*it
)
113 struct comedi_subdevice
*s
;
114 unsigned long iobase
= 0;
116 unsigned int irq
= 0;
118 struct pcmcia_device
*link
;
121 /* allocate and initialize dev->private */
122 if (alloc_private(dev
, sizeof(struct dio24_private
)) < 0)
125 /* get base address, irq etc. based on bustype */
126 switch (thisboard
->bustype
) {
128 link
= pcmcia_cur_dev
; /* XXX hack */
131 iobase
= link
->resource
[0]->start
;
137 pr_err("bug! couldn't determine board type\n");
141 pr_debug("comedi%d: ni_daq_dio24: %s, io 0x%lx", dev
->minor
,
142 thisboard
->name
, iobase
);
145 pr_debug("irq %u\n", irq
);
149 pr_err("io base address is zero!\n");
153 dev
->iobase
= iobase
;
160 dev
->board_name
= thisboard
->name
;
162 ret
= comedi_alloc_subdevices(dev
, 1);
167 s
= dev
->subdevices
+ 0;
168 subdev_8255_init(dev
, s
, NULL
, dev
->iobase
);
173 static void dio24_detach(struct comedi_device
*dev
)
176 subdev_8255_cleanup(dev
, dev
->subdevices
+ 0);
177 if (thisboard
->bustype
!= pcmcia_bustype
&& dev
->iobase
)
178 release_region(dev
->iobase
, DIO24_SIZE
);
180 free_irq(dev
->irq
, dev
);
183 static void dio24_config(struct pcmcia_device
*link
);
184 static void dio24_release(struct pcmcia_device
*link
);
185 static int dio24_cs_suspend(struct pcmcia_device
*p_dev
);
186 static int dio24_cs_resume(struct pcmcia_device
*p_dev
);
188 static int dio24_cs_attach(struct pcmcia_device
*);
189 static void dio24_cs_detach(struct pcmcia_device
*);
191 struct local_info_t
{
192 struct pcmcia_device
*link
;
194 struct bus_operations
*bus
;
197 static int dio24_cs_attach(struct pcmcia_device
*link
)
199 struct local_info_t
*local
;
201 printk(KERN_INFO
"ni_daq_dio24: HOLA SOY YO - CS-attach!\n");
203 dev_dbg(&link
->dev
, "dio24_cs_attach()\n");
205 /* Allocate space for private device-specific data */
206 local
= kzalloc(sizeof(struct local_info_t
), GFP_KERNEL
);
212 pcmcia_cur_dev
= link
;
217 } /* dio24_cs_attach */
219 static void dio24_cs_detach(struct pcmcia_device
*link
)
221 ((struct local_info_t
*)link
->priv
)->stop
= 1;
224 /* This points to the parent local_info_t struct */
228 static int dio24_pcmcia_config_loop(struct pcmcia_device
*p_dev
,
231 if (p_dev
->config_index
== 0)
234 return pcmcia_request_io(p_dev
);
237 static void dio24_config(struct pcmcia_device
*link
)
241 printk(KERN_INFO
"ni_daq_dio24: HOLA SOY YO! - config\n");
243 dev_dbg(&link
->dev
, "dio24_config\n");
245 link
->config_flags
|= CONF_ENABLE_IRQ
| CONF_AUTO_AUDIO
|
248 ret
= pcmcia_loop_config(link
, dio24_pcmcia_config_loop
, NULL
);
250 dev_warn(&link
->dev
, "no configuration found\n");
257 ret
= pcmcia_enable_device(link
);
264 printk(KERN_INFO
"Fallo");
269 static void dio24_release(struct pcmcia_device
*link
)
271 dev_dbg(&link
->dev
, "dio24_release\n");
273 pcmcia_disable_device(link
);
274 } /* dio24_release */
276 static int dio24_cs_suspend(struct pcmcia_device
*link
)
278 struct local_info_t
*local
= link
->priv
;
280 /* Mark the device as stopped, to block IO until later */
283 } /* dio24_cs_suspend */
285 static int dio24_cs_resume(struct pcmcia_device
*link
)
287 struct local_info_t
*local
= link
->priv
;
291 } /* dio24_cs_resume */
293 /*====================================================================*/
295 static const struct pcmcia_device_id dio24_cs_ids
[] = {
296 /* N.B. These IDs should match those in dio24_boards */
297 PCMCIA_DEVICE_MANF_CARD(0x010b, 0x475c), /* daqcard-dio24 */
301 MODULE_DEVICE_TABLE(pcmcia
, dio24_cs_ids
);
302 MODULE_AUTHOR("Daniel Vecino Castel <dvecino@able.es>");
303 MODULE_DESCRIPTION("Comedi driver for National Instruments "
304 "PCMCIA DAQ-Card DIO-24");
305 MODULE_LICENSE("GPL");
307 struct pcmcia_driver dio24_cs_driver
= {
308 .probe
= dio24_cs_attach
,
309 .remove
= dio24_cs_detach
,
310 .suspend
= dio24_cs_suspend
,
311 .resume
= dio24_cs_resume
,
312 .id_table
= dio24_cs_ids
,
313 .owner
= THIS_MODULE
,
314 .name
= "ni_daq_dio24",
317 static int __init
init_dio24_cs(void)
319 printk("ni_daq_dio24: HOLA SOY YO!\n");
320 pcmcia_register_driver(&dio24_cs_driver
);
324 static void __exit
exit_dio24_cs(void)
326 pcmcia_unregister_driver(&dio24_cs_driver
);
329 int __init
init_module(void)
333 ret
= init_dio24_cs();
337 return comedi_driver_register(&driver_dio24
);
340 void __exit
cleanup_module(void)
343 comedi_driver_unregister(&driver_dio24
);