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)
175 struct comedi_subdevice *s;
177 if (dev->subdevices) {
178 s = &dev->subdevices[0];
179 subdev_8255_cleanup(dev, s);
181 if (thisboard->bustype != pcmcia_bustype && dev->iobase)
182 release_region(dev->iobase, DIO24_SIZE);
184 free_irq(dev->irq, dev);
187 static void dio24_config(struct pcmcia_device *link);
188 static void dio24_release(struct pcmcia_device *link);
189 static int dio24_cs_suspend(struct pcmcia_device *p_dev);
190 static int dio24_cs_resume(struct pcmcia_device *p_dev);
192 static int dio24_cs_attach(struct pcmcia_device *);
193 static void dio24_cs_detach(struct pcmcia_device *);
195 struct local_info_t {
196 struct pcmcia_device *link;
198 struct bus_operations *bus;
201 static int dio24_cs_attach(struct pcmcia_device *link)
203 struct local_info_t *local;
205 printk(KERN_INFO "ni_daq_dio24: HOLA SOY YO - CS-attach!\n");
207 dev_dbg(&link->dev, "dio24_cs_attach()\n");
209 /* Allocate space for private device-specific data */
210 local = kzalloc(sizeof(struct local_info_t), GFP_KERNEL);
216 pcmcia_cur_dev = link;
221 } /* dio24_cs_attach */
223 static void dio24_cs_detach(struct pcmcia_device *link)
225 ((struct local_info_t *)link->priv)->stop = 1;
228 /* This points to the parent local_info_t struct */
232 static int dio24_pcmcia_config_loop(struct pcmcia_device *p_dev,
235 if (p_dev->config_index == 0)
238 return pcmcia_request_io(p_dev);
241 static void dio24_config(struct pcmcia_device *link)
245 printk(KERN_INFO "ni_daq_dio24: HOLA SOY YO! - config\n");
247 dev_dbg(&link->dev, "dio24_config\n");
249 link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_AUDIO |
252 ret = pcmcia_loop_config(link, dio24_pcmcia_config_loop, NULL);
254 dev_warn(&link->dev, "no configuration found\n");
261 ret = pcmcia_enable_device(link);
268 printk(KERN_INFO "Fallo");
273 static void dio24_release(struct pcmcia_device *link)
275 dev_dbg(&link->dev, "dio24_release\n");
277 pcmcia_disable_device(link);
278 } /* dio24_release */
280 static int dio24_cs_suspend(struct pcmcia_device *link)
282 struct local_info_t *local = link->priv;
284 /* Mark the device as stopped, to block IO until later */
287 } /* dio24_cs_suspend */
289 static int dio24_cs_resume(struct pcmcia_device *link)
291 struct local_info_t *local = link->priv;
295 } /* dio24_cs_resume */
297 /*====================================================================*/
299 static const struct pcmcia_device_id dio24_cs_ids[] = {
300 /* N.B. These IDs should match those in dio24_boards */
301 PCMCIA_DEVICE_MANF_CARD(0x010b, 0x475c), /* daqcard-dio24 */
305 MODULE_DEVICE_TABLE(pcmcia, dio24_cs_ids);
306 MODULE_AUTHOR("Daniel Vecino Castel <dvecino@able.es>");
307 MODULE_DESCRIPTION("Comedi driver for National Instruments "
308 "PCMCIA DAQ-Card DIO-24");
309 MODULE_LICENSE("GPL");
311 static struct pcmcia_driver dio24_cs_driver = {
312 .probe = dio24_cs_attach,
313 .remove = dio24_cs_detach,
314 .suspend = dio24_cs_suspend,
315 .resume = dio24_cs_resume,
316 .id_table = dio24_cs_ids,
317 .owner = THIS_MODULE,
318 .name = "ni_daq_dio24",
321 static int __init init_dio24_cs(void)
323 printk("ni_daq_dio24: HOLA SOY YO!\n");
324 pcmcia_register_driver(&dio24_cs_driver);
328 static void __exit exit_dio24_cs(void)
330 pcmcia_unregister_driver(&dio24_cs_driver);
333 int __init init_module(void)
337 ret = init_dio24_cs();
341 return comedi_driver_register(&driver_dio24);
344 void __exit cleanup_module(void)
347 comedi_driver_unregister(&driver_dio24);