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 = NULL;
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 int 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;
120 /* allocate and initialize dev->private */
121 if (alloc_private(dev, sizeof(struct dio24_private)) < 0)
124 /* get base address, irq etc. based on bustype */
125 switch (thisboard->bustype) {
127 link = pcmcia_cur_dev; /* XXX hack */
130 iobase = link->resource[0]->start;
136 printk("bug! couldn't determine board type\n");
140 printk("comedi%d: ni_daq_dio24: %s, io 0x%lx", dev->minor,
141 thisboard->name, iobase);
144 printk(", irq %u", irq);
151 printk("io base address is zero!\n");
155 dev->iobase = iobase;
162 dev->board_name = thisboard->name;
164 if (alloc_subdevices(dev, 1) < 0)
168 s = dev->subdevices + 0;
169 subdev_8255_init(dev, s, NULL, dev->iobase);
174 static int dio24_detach(struct comedi_device *dev)
176 printk("comedi%d: ni_daq_dio24: remove\n", dev->minor);
179 subdev_8255_cleanup(dev, dev->subdevices + 0);
181 if (thisboard->bustype != pcmcia_bustype && dev->iobase)
182 release_region(dev->iobase, DIO24_SIZE);
184 free_irq(dev->irq, dev);
189 static void dio24_config(struct pcmcia_device *link);
190 static void dio24_release(struct pcmcia_device *link);
191 static int dio24_cs_suspend(struct pcmcia_device *p_dev);
192 static int dio24_cs_resume(struct pcmcia_device *p_dev);
194 static int dio24_cs_attach(struct pcmcia_device *);
195 static void dio24_cs_detach(struct pcmcia_device *);
197 struct local_info_t {
198 struct pcmcia_device *link;
200 struct bus_operations *bus;
203 static int dio24_cs_attach(struct pcmcia_device *link)
205 struct local_info_t *local;
207 printk(KERN_INFO "ni_daq_dio24: HOLA SOY YO - CS-attach!\n");
209 dev_dbg(&link->dev, "dio24_cs_attach()\n");
211 /* Allocate space for private device-specific data */
212 local = kzalloc(sizeof(struct local_info_t), GFP_KERNEL);
218 pcmcia_cur_dev = link;
223 } /* dio24_cs_attach */
225 static void dio24_cs_detach(struct pcmcia_device *link)
228 printk(KERN_INFO "ni_daq_dio24: HOLA SOY YO - cs-detach!\n");
230 dev_dbg(&link->dev, "dio24_cs_detach\n");
232 ((struct local_info_t *)link->priv)->stop = 1;
235 /* This points to the parent local_info_t struct */
238 } /* dio24_cs_detach */
240 static int dio24_pcmcia_config_loop(struct pcmcia_device *p_dev,
243 if (p_dev->config_index == 0)
246 return pcmcia_request_io(p_dev);
249 static void dio24_config(struct pcmcia_device *link)
253 printk(KERN_INFO "ni_daq_dio24: HOLA SOY YO! - config\n");
255 dev_dbg(&link->dev, "dio24_config\n");
257 link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_AUDIO |
260 ret = pcmcia_loop_config(link, dio24_pcmcia_config_loop, NULL);
262 dev_warn(&link->dev, "no configuration found\n");
269 ret = pcmcia_enable_device(link);
276 printk(KERN_INFO "Fallo");
281 static void dio24_release(struct pcmcia_device *link)
283 dev_dbg(&link->dev, "dio24_release\n");
285 pcmcia_disable_device(link);
286 } /* dio24_release */
288 static int dio24_cs_suspend(struct pcmcia_device *link)
290 struct local_info_t *local = link->priv;
292 /* Mark the device as stopped, to block IO until later */
295 } /* dio24_cs_suspend */
297 static int dio24_cs_resume(struct pcmcia_device *link)
299 struct local_info_t *local = link->priv;
303 } /* dio24_cs_resume */
305 /*====================================================================*/
307 static struct pcmcia_device_id dio24_cs_ids[] = {
308 /* N.B. These IDs should match those in dio24_boards */
309 PCMCIA_DEVICE_MANF_CARD(0x010b, 0x475c), /* daqcard-dio24 */
313 MODULE_DEVICE_TABLE(pcmcia, dio24_cs_ids);
314 MODULE_AUTHOR("Daniel Vecino Castel <dvecino@able.es>");
315 MODULE_DESCRIPTION("Comedi driver for National Instruments "
316 "PCMCIA DAQ-Card DIO-24");
317 MODULE_LICENSE("GPL");
319 struct pcmcia_driver dio24_cs_driver = {
320 .probe = dio24_cs_attach,
321 .remove = dio24_cs_detach,
322 .suspend = dio24_cs_suspend,
323 .resume = dio24_cs_resume,
324 .id_table = dio24_cs_ids,
325 .owner = THIS_MODULE,
326 .name = "ni_daq_dio24",
329 static int __init init_dio24_cs(void)
331 printk("ni_daq_dio24: HOLA SOY YO!\n");
332 pcmcia_register_driver(&dio24_cs_driver);
336 static void __exit exit_dio24_cs(void)
338 pcmcia_unregister_driver(&dio24_cs_driver);
341 int __init init_module(void)
345 ret = init_dio24_cs();
349 return comedi_driver_register(&driver_dio24);
352 void __exit cleanup_module(void)
355 comedi_driver_unregister(&driver_dio24);