ni_daq_dio24.c revision 484ecc95d9cdfa8b2f7029e2f3409cf078aed4ab
1/* 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> 5 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. 11 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. 16 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. 21 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. 25 26************************************************************************ 27*/ 28/* 29Driver: ni_daq_dio24 30Description: National Instruments PCMCIA DAQ-Card DIO-24 31Author: Daniel Vecino Castel <dvecino@able.es> 32Devices: [National Instruments] PCMCIA DAQ-Card DIO-24 (ni_daq_dio24) 33Status: ? 34Updated: Thu, 07 Nov 2002 21:53:06 -0800 35 36This is just a wrapper around the 8255.o driver to properly handle 37the PCMCIA interface. 38*/ 39 40 /* #define LABPC_DEBUG *//* enable debugging messages */ 41#undef LABPC_DEBUG 42 43#include <linux/interrupt.h> 44#include <linux/slab.h> 45#include "../comedidev.h" 46 47#include <linux/ioport.h> 48 49#include "8255.h" 50 51#include <pcmcia/cistpl.h> 52#include <pcmcia/cisreg.h> 53#include <pcmcia/ds.h> 54 55static struct pcmcia_device *pcmcia_cur_dev; 56 57#define DIO24_SIZE 4 /* size of io region used by board */ 58 59static int dio24_attach(struct comedi_device *dev, struct comedi_devconfig *it); 60static void dio24_detach(struct comedi_device *dev); 61 62enum dio24_bustype { pcmcia_bustype }; 63 64struct dio24_board_struct { 65 const char *name; 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); 72}; 73 74static const struct dio24_board_struct dio24_boards[] = { 75 { 76 .name = "daqcard-dio24", 77 .device_id = 0x475c, /* 0x10b is manufacturer id, 0x475c is device id */ 78 .bustype = pcmcia_bustype, 79 .have_dio = 1, 80 }, 81 { 82 .name = "ni_daq_dio24", 83 .device_id = 0x475c, /* 0x10b is manufacturer id, 0x475c is device id */ 84 .bustype = pcmcia_bustype, 85 .have_dio = 1, 86 }, 87}; 88 89/* 90 * Useful for shorthand access to the particular board structure 91 */ 92#define thisboard ((const struct dio24_board_struct *)dev->board_ptr) 93 94struct dio24_private { 95 96 int data; /* number of data points left to be taken */ 97}; 98 99#define devpriv ((struct dio24_private *)dev->private) 100 101static 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), 109}; 110 111static int dio24_attach(struct comedi_device *dev, struct comedi_devconfig *it) 112{ 113 struct comedi_subdevice *s; 114 unsigned long iobase = 0; 115#ifdef incomplete 116 unsigned int irq = 0; 117#endif 118 struct pcmcia_device *link; 119 120 /* allocate and initialize dev->private */ 121 if (alloc_private(dev, sizeof(struct dio24_private)) < 0) 122 return -ENOMEM; 123 124 /* get base address, irq etc. based on bustype */ 125 switch (thisboard->bustype) { 126 case pcmcia_bustype: 127 link = pcmcia_cur_dev; /* XXX hack */ 128 if (!link) 129 return -EIO; 130 iobase = link->resource[0]->start; 131#ifdef incomplete 132 irq = link->irq; 133#endif 134 break; 135 default: 136 pr_err("bug! couldn't determine board type\n"); 137 return -EINVAL; 138 break; 139 } 140 pr_debug("comedi%d: ni_daq_dio24: %s, io 0x%lx", dev->minor, 141 thisboard->name, iobase); 142#ifdef incomplete 143 if (irq) 144 pr_debug("irq %u\n", irq); 145#endif 146 147 if (iobase == 0) { 148 pr_err("io base address is zero!\n"); 149 return -EINVAL; 150 } 151 152 dev->iobase = iobase; 153 154#ifdef incomplete 155 /* grab our IRQ */ 156 dev->irq = irq; 157#endif 158 159 dev->board_name = thisboard->name; 160 161 if (alloc_subdevices(dev, 1) < 0) 162 return -ENOMEM; 163 164 /* 8255 dio */ 165 s = dev->subdevices + 0; 166 subdev_8255_init(dev, s, NULL, dev->iobase); 167 168 return 0; 169}; 170 171static void dio24_detach(struct comedi_device *dev) 172{ 173 if (dev->subdevices) 174 subdev_8255_cleanup(dev, dev->subdevices + 0); 175 if (thisboard->bustype != pcmcia_bustype && dev->iobase) 176 release_region(dev->iobase, DIO24_SIZE); 177 if (dev->irq) 178 free_irq(dev->irq, dev); 179}; 180 181static void dio24_config(struct pcmcia_device *link); 182static void dio24_release(struct pcmcia_device *link); 183static int dio24_cs_suspend(struct pcmcia_device *p_dev); 184static int dio24_cs_resume(struct pcmcia_device *p_dev); 185 186static int dio24_cs_attach(struct pcmcia_device *); 187static void dio24_cs_detach(struct pcmcia_device *); 188 189struct local_info_t { 190 struct pcmcia_device *link; 191 int stop; 192 struct bus_operations *bus; 193}; 194 195static int dio24_cs_attach(struct pcmcia_device *link) 196{ 197 struct local_info_t *local; 198 199 printk(KERN_INFO "ni_daq_dio24: HOLA SOY YO - CS-attach!\n"); 200 201 dev_dbg(&link->dev, "dio24_cs_attach()\n"); 202 203 /* Allocate space for private device-specific data */ 204 local = kzalloc(sizeof(struct local_info_t), GFP_KERNEL); 205 if (!local) 206 return -ENOMEM; 207 local->link = link; 208 link->priv = local; 209 210 pcmcia_cur_dev = link; 211 212 dio24_config(link); 213 214 return 0; 215} /* dio24_cs_attach */ 216 217static void dio24_cs_detach(struct pcmcia_device *link) 218{ 219 ((struct local_info_t *)link->priv)->stop = 1; 220 dio24_release(link); 221 222 /* This points to the parent local_info_t struct */ 223 kfree(link->priv); 224} 225 226static int dio24_pcmcia_config_loop(struct pcmcia_device *p_dev, 227 void *priv_data) 228{ 229 if (p_dev->config_index == 0) 230 return -EINVAL; 231 232 return pcmcia_request_io(p_dev); 233} 234 235static void dio24_config(struct pcmcia_device *link) 236{ 237 int ret; 238 239 printk(KERN_INFO "ni_daq_dio24: HOLA SOY YO! - config\n"); 240 241 dev_dbg(&link->dev, "dio24_config\n"); 242 243 link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_AUDIO | 244 CONF_AUTO_SET_IO; 245 246 ret = pcmcia_loop_config(link, dio24_pcmcia_config_loop, NULL); 247 if (ret) { 248 dev_warn(&link->dev, "no configuration found\n"); 249 goto failed; 250 } 251 252 if (!link->irq) 253 goto failed; 254 255 ret = pcmcia_enable_device(link); 256 if (ret) 257 goto failed; 258 259 return; 260 261failed: 262 printk(KERN_INFO "Fallo"); 263 dio24_release(link); 264 265} /* dio24_config */ 266 267static void dio24_release(struct pcmcia_device *link) 268{ 269 dev_dbg(&link->dev, "dio24_release\n"); 270 271 pcmcia_disable_device(link); 272} /* dio24_release */ 273 274static int dio24_cs_suspend(struct pcmcia_device *link) 275{ 276 struct local_info_t *local = link->priv; 277 278 /* Mark the device as stopped, to block IO until later */ 279 local->stop = 1; 280 return 0; 281} /* dio24_cs_suspend */ 282 283static int dio24_cs_resume(struct pcmcia_device *link) 284{ 285 struct local_info_t *local = link->priv; 286 287 local->stop = 0; 288 return 0; 289} /* dio24_cs_resume */ 290 291/*====================================================================*/ 292 293static const struct pcmcia_device_id dio24_cs_ids[] = { 294 /* N.B. These IDs should match those in dio24_boards */ 295 PCMCIA_DEVICE_MANF_CARD(0x010b, 0x475c), /* daqcard-dio24 */ 296 PCMCIA_DEVICE_NULL 297}; 298 299MODULE_DEVICE_TABLE(pcmcia, dio24_cs_ids); 300MODULE_AUTHOR("Daniel Vecino Castel <dvecino@able.es>"); 301MODULE_DESCRIPTION("Comedi driver for National Instruments " 302 "PCMCIA DAQ-Card DIO-24"); 303MODULE_LICENSE("GPL"); 304 305struct pcmcia_driver dio24_cs_driver = { 306 .probe = dio24_cs_attach, 307 .remove = dio24_cs_detach, 308 .suspend = dio24_cs_suspend, 309 .resume = dio24_cs_resume, 310 .id_table = dio24_cs_ids, 311 .owner = THIS_MODULE, 312 .name = "ni_daq_dio24", 313}; 314 315static int __init init_dio24_cs(void) 316{ 317 printk("ni_daq_dio24: HOLA SOY YO!\n"); 318 pcmcia_register_driver(&dio24_cs_driver); 319 return 0; 320} 321 322static void __exit exit_dio24_cs(void) 323{ 324 pcmcia_unregister_driver(&dio24_cs_driver); 325} 326 327int __init init_module(void) 328{ 329 int ret; 330 331 ret = init_dio24_cs(); 332 if (ret < 0) 333 return ret; 334 335 return comedi_driver_register(&driver_dio24); 336} 337 338void __exit cleanup_module(void) 339{ 340 exit_dio24_cs(); 341 comedi_driver_unregister(&driver_dio24); 342} 343