ni_daq_700.c revision 9a16a92c11e82a0a80b4847343cfb8b5c54ed6b6
1/* 2 * comedi/drivers/ni_daq_700.c 3 * Driver for DAQCard-700 DIO only 4 * copied from 8255 5 * 6 * COMEDI - Linux Control and Measurement Device Interface 7 * Copyright (C) 1998 David A. Schleef <ds@schleef.org> 8 * 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. 13 * 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. 18 * 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. 22 * 23 */ 24 25/* 26Driver: ni_daq_700 27Description: National Instruments PCMCIA DAQCard-700 DIO only 28Author: Fred Brooks <nsaspook@nsaspook.com>, 29 based on ni_daq_dio24 by Daniel Vecino Castel <dvecino@able.es> 30Devices: [National Instruments] PCMCIA DAQ-Card-700 (ni_daq_700) 31Status: works 32Updated: Thu, 21 Feb 2008 12:07:20 +0000 33 34The daqcard-700 appears in Comedi as a single digital I/O subdevice with 3516 channels. The channel 0 corresponds to the daqcard-700's output 36port, bit 0; channel 8 corresponds to the input port, bit 0. 37 38Direction configuration: channels 0-7 output, 8-15 input (8225 device 39emu as port A output, port B input, port C N/A). 40 41IRQ is assigned but not used. 42*/ 43 44#include <linux/interrupt.h> 45#include "../comedidev.h" 46 47#include <linux/ioport.h> 48 49#include <pcmcia/cs_types.h> 50#include <pcmcia/cs.h> 51#include <pcmcia/cistpl.h> 52#include <pcmcia/cisreg.h> 53#include <pcmcia/ds.h> 54 55static struct pcmcia_device *pcmcia_cur_dev = NULL; 56 57#define DIO700_SIZE 8 /* size of io region used by board */ 58 59static int dio700_attach(struct comedi_device *dev, 60 struct comedi_devconfig *it); 61static int dio700_detach(struct comedi_device *dev); 62 63enum dio700_bustype { pcmcia_bustype }; 64 65struct dio700_board { 66 const char *name; 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 */ 71 /* as appropriate */ 72 unsigned int (*read_byte) (unsigned int address); 73 void (*write_byte) (unsigned int byte, unsigned int address); 74}; 75 76static const struct dio700_board dio700_boards[] = { 77 { 78 .name = "daqcard-700", 79 /* 0x10b is manufacturer id, 0x4743 is device id */ 80 .device_id = 0x4743, 81 .bustype = pcmcia_bustype, 82 .have_dio = 1, 83 }, 84 { 85 .name = "ni_daq_700", 86 /* 0x10b is manufacturer id, 0x4743 is device id */ 87 .device_id = 0x4743, 88 .bustype = pcmcia_bustype, 89 .have_dio = 1, 90 }, 91}; 92 93/* 94 * Useful for shorthand access to the particular board structure 95 */ 96#define thisboard ((const struct dio700_board *)dev->board_ptr) 97 98struct dio700_private { 99 100 int data; /* number of data points left to be taken */ 101}; 102 103#define devpriv ((struct dio700_private *)dev->private) 104 105static 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), 113}; 114 115/* the real driver routines */ 116 117#define _700_SIZE 8 118 119#define _700_DATA 0 120 121#define DIO_W 0x04 122#define DIO_R 0x05 123 124struct subdev_700_struct { 125 unsigned long cb_arg; 126 int (*cb_func) (int, int, int, unsigned long); 127 int have_irq; 128}; 129 130#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) 133 134static void do_config(struct comedi_device *dev, struct comedi_subdevice *s); 135 136void subdev_700_interrupt(struct comedi_device *dev, struct comedi_subdevice *s) 137{ 138 short d; 139 140 d = CALLBACK_FUNC(0, _700_DATA, 0, CALLBACK_ARG); 141 142 comedi_buf_put(s->async, d); 143 s->async->events |= COMEDI_CB_EOS; 144 145 comedi_event(dev, s); 146} 147 148static int subdev_700_cb(int dir, int port, int data, unsigned long arg) 149{ 150 /* port is always A for output and B for input (8255 emu) */ 151 unsigned long iobase = arg; 152 153 if (dir) { 154 outb(data, iobase + DIO_W); 155 return 0; 156 } else { 157 return inb(iobase + DIO_R); 158 } 159} 160 161static int subdev_700_insn(struct comedi_device *dev, 162 struct comedi_subdevice *s, struct comedi_insn *insn, 163 unsigned int *data) 164{ 165 if (data[0]) { 166 s->state &= ~data[0]; 167 s->state |= (data[0] & data[1]); 168 169 if (data[0] & 0xff) 170 CALLBACK_FUNC(1, _700_DATA, s->state & 0xff, 171 CALLBACK_ARG); 172 } 173 174 data[1] = s->state & 0xff; 175 data[1] |= CALLBACK_FUNC(0, _700_DATA, 0, CALLBACK_ARG) << 8; 176 177 return 2; 178} 179 180static int subdev_700_insn_config(struct comedi_device *dev, 181 struct comedi_subdevice *s, 182 struct comedi_insn *insn, unsigned int *data) 183{ 184 185 switch (data[0]) { 186 case INSN_CONFIG_DIO_INPUT: 187 break; 188 case INSN_CONFIG_DIO_OUTPUT: 189 break; 190 case INSN_CONFIG_DIO_QUERY: 191 data[1] = 192 (s-> 193 io_bits & (1 << CR_CHAN(insn->chanspec))) ? COMEDI_OUTPUT : 194 COMEDI_INPUT; 195 return insn->n; 196 break; 197 default: 198 return -EINVAL; 199 } 200 201 return 1; 202} 203 204static void do_config(struct comedi_device *dev, struct comedi_subdevice *s) 205{ /* use powerup defaults */ 206 return; 207} 208 209static int subdev_700_cmdtest(struct comedi_device *dev, 210 struct comedi_subdevice *s, 211 struct comedi_cmd *cmd) 212{ 213 int err = 0; 214 unsigned int tmp; 215 216 /* step 1 */ 217 218 tmp = cmd->start_src; 219 cmd->start_src &= TRIG_NOW; 220 if (!cmd->start_src || tmp != cmd->start_src) 221 err++; 222 223 tmp = cmd->scan_begin_src; 224 cmd->scan_begin_src &= TRIG_EXT; 225 if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src) 226 err++; 227 228 tmp = cmd->convert_src; 229 cmd->convert_src &= TRIG_FOLLOW; 230 if (!cmd->convert_src || tmp != cmd->convert_src) 231 err++; 232 233 tmp = cmd->scan_end_src; 234 cmd->scan_end_src &= TRIG_COUNT; 235 if (!cmd->scan_end_src || tmp != cmd->scan_end_src) 236 err++; 237 238 tmp = cmd->stop_src; 239 cmd->stop_src &= TRIG_NONE; 240 if (!cmd->stop_src || tmp != cmd->stop_src) 241 err++; 242 243 if (err) 244 return 1; 245 246 /* step 2 */ 247 248 if (err) 249 return 2; 250 251 /* step 3 */ 252 253 if (cmd->start_arg != 0) { 254 cmd->start_arg = 0; 255 err++; 256 } 257 if (cmd->scan_begin_arg != 0) { 258 cmd->scan_begin_arg = 0; 259 err++; 260 } 261 if (cmd->convert_arg != 0) { 262 cmd->convert_arg = 0; 263 err++; 264 } 265 if (cmd->scan_end_arg != 1) { 266 cmd->scan_end_arg = 1; 267 err++; 268 } 269 if (cmd->stop_arg != 0) { 270 cmd->stop_arg = 0; 271 err++; 272 } 273 274 if (err) 275 return 3; 276 277 /* step 4 */ 278 279 if (err) 280 return 4; 281 282 return 0; 283} 284 285static int subdev_700_cmd(struct comedi_device *dev, struct comedi_subdevice *s) 286{ 287 /* FIXME */ 288 289 return 0; 290} 291 292static int subdev_700_cancel(struct comedi_device *dev, 293 struct comedi_subdevice *s) 294{ 295 /* FIXME */ 296 297 return 0; 298} 299 300int subdev_700_init(struct comedi_device *dev, struct comedi_subdevice *s, 301 int (*cb) (int, int, int, unsigned long), unsigned long arg) 302{ 303 s->type = COMEDI_SUBD_DIO; 304 s->subdev_flags = SDF_READABLE | SDF_WRITABLE; 305 s->n_chan = 16; 306 s->range_table = &range_digital; 307 s->maxdata = 1; 308 309 s->private = kmalloc(sizeof(struct subdev_700_struct), GFP_KERNEL); 310 if (!s->private) 311 return -ENOMEM; 312 313 CALLBACK_ARG = arg; 314 if (cb == NULL) 315 CALLBACK_FUNC = subdev_700_cb; 316 else 317 CALLBACK_FUNC = cb; 318 319 s->insn_bits = subdev_700_insn; 320 s->insn_config = subdev_700_insn_config; 321 322 s->state = 0; 323 s->io_bits = 0x00ff; 324 do_config(dev, s); 325 326 return 0; 327} 328 329int subdev_700_init_irq(struct comedi_device *dev, struct comedi_subdevice *s, 330 int (*cb) (int, int, int, unsigned long), 331 unsigned long arg) 332{ 333 int ret; 334 335 ret = subdev_700_init(dev, s, cb, arg); 336 if (ret < 0) 337 return ret; 338 339 s->do_cmdtest = subdev_700_cmdtest; 340 s->do_cmd = subdev_700_cmd; 341 s->cancel = subdev_700_cancel; 342 343 subdevpriv->have_irq = 1; 344 345 return 0; 346} 347 348void subdev_700_cleanup(struct comedi_device *dev, struct comedi_subdevice *s) 349{ 350 if (s->private) 351 if (subdevpriv->have_irq) 352 353 kfree(s->private); 354} 355 356EXPORT_SYMBOL(subdev_700_init); 357EXPORT_SYMBOL(subdev_700_init_irq); 358EXPORT_SYMBOL(subdev_700_cleanup); 359EXPORT_SYMBOL(subdev_700_interrupt); 360 361static int dio700_attach(struct comedi_device *dev, struct comedi_devconfig *it) 362{ 363 struct comedi_subdevice *s; 364 unsigned long iobase = 0; 365#ifdef incomplete 366 unsigned int irq = 0; 367#endif 368 struct pcmcia_device *link; 369 370 /* allocate and initialize dev->private */ 371 if (alloc_private(dev, sizeof(struct dio700_private)) < 0) 372 return -ENOMEM; 373 374 /* get base address, irq etc. based on bustype */ 375 switch (thisboard->bustype) { 376 case pcmcia_bustype: 377 link = pcmcia_cur_dev; /* XXX hack */ 378 if (!link) 379 return -EIO; 380 iobase = link->io.BasePort1; 381#ifdef incomplete 382 irq = link->irq.AssignedIRQ; 383#endif 384 break; 385 default: 386 printk("bug! couldn't determine board type\n"); 387 return -EINVAL; 388 break; 389 } 390 printk("comedi%d: ni_daq_700: %s, io 0x%lx", dev->minor, 391 thisboard->name, iobase); 392#ifdef incomplete 393 if (irq) 394 printk(", irq %u", irq); 395 396#endif 397 398 printk("\n"); 399 400 if (iobase == 0) { 401 printk("io base address is zero!\n"); 402 return -EINVAL; 403 } 404 405 dev->iobase = iobase; 406 407#ifdef incomplete 408 /* grab our IRQ */ 409 dev->irq = irq; 410#endif 411 412 dev->board_name = thisboard->name; 413 414 if (alloc_subdevices(dev, 1) < 0) 415 return -ENOMEM; 416 417 /* DAQCard-700 dio */ 418 s = dev->subdevices + 0; 419 subdev_700_init(dev, s, NULL, dev->iobase); 420 421 return 0; 422}; 423 424static int dio700_detach(struct comedi_device *dev) 425{ 426 printk("comedi%d: ni_daq_700: cs-remove\n", dev->minor); 427 428 if (dev->subdevices) 429 subdev_700_cleanup(dev, dev->subdevices + 0); 430 431 if (thisboard->bustype != pcmcia_bustype && dev->iobase) 432 release_region(dev->iobase, DIO700_SIZE); 433 if (dev->irq) 434 free_irq(dev->irq, dev); 435 436 return 0; 437}; 438 439/* PCMCIA crap -- watch your words, please! */ 440 441static void dio700_config(struct pcmcia_device *link); 442static void dio700_release(struct pcmcia_device *link); 443static int dio700_cs_suspend(struct pcmcia_device *p_dev); 444static int dio700_cs_resume(struct pcmcia_device *p_dev); 445 446/* 447 The attach() and detach() entry points are used to create and destroy 448 "instances" of the driver, where each instance represents everything 449 needed to manage one actual PCMCIA card. 450*/ 451 452static int dio700_cs_attach(struct pcmcia_device *); 453static void dio700_cs_detach(struct pcmcia_device *); 454 455/* 456 You'll also need to prototype all the functions that will actually 457 be used to talk to your device. See 'memory_cs' for a good example 458 of a fully self-sufficient driver; the other drivers rely more or 459 less on other parts of the kernel. 460*/ 461 462/* 463 The dev_info variable is the "key" that is used to match up this 464 device driver with appropriate cards, through the card configuration 465 database. 466*/ 467 468static const dev_info_t dev_info = "ni_daq_700"; 469 470struct local_info_t { 471 struct pcmcia_device *link; 472 dev_node_t node; 473 int stop; 474 struct bus_operations *bus; 475}; 476 477/*====================================================================== 478 479 dio700_cs_attach() creates an "instance" of the driver, allocating 480 local data structures for one device. The device is registered 481 with Card Services. 482 483 The dev_link structure is initialized, but we don't actually 484 configure the card at this point -- we wait until we receive a 485 card insertion event. 486 487======================================================================*/ 488 489static int dio700_cs_attach(struct pcmcia_device *link) 490{ 491 struct local_info_t *local; 492 493 printk(KERN_INFO "ni_daq_700: cs-attach\n"); 494 495 dev_dbg(&link->dev, "dio700_cs_attach()\n"); 496 497 /* Allocate space for private device-specific data */ 498 local = kzalloc(sizeof(struct local_info_t), GFP_KERNEL); 499 if (!local) 500 return -ENOMEM; 501 local->link = link; 502 link->priv = local; 503 504 /* Interrupt setup */ 505 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING; 506 link->irq.Handler = NULL; 507 508 /* 509 General socket configuration defaults can go here. In this 510 client, we assume very little, and rely on the CIS for almost 511 everything. In most clients, many details (i.e., number, sizes, 512 and attributes of IO windows) are fixed by the nature of the 513 device, and can be hard-wired here. 514 */ 515 link->conf.Attributes = 0; 516 link->conf.IntType = INT_MEMORY_AND_IO; 517 518 pcmcia_cur_dev = link; 519 520 dio700_config(link); 521 522 return 0; 523} /* dio700_cs_attach */ 524 525/*====================================================================== 526 527 This deletes a driver "instance". The device is de-registered 528 with Card Services. If it has been released, all local data 529 structures are freed. Otherwise, the structures will be freed 530 when the device is released. 531 532======================================================================*/ 533 534static void dio700_cs_detach(struct pcmcia_device *link) 535{ 536 537 printk(KERN_INFO "ni_daq_700: cs-detach!\n"); 538 539 dev_dbg(&link->dev, "dio700_cs_detach\n"); 540 541 if (link->dev_node) { 542 ((struct local_info_t *)link->priv)->stop = 1; 543 dio700_release(link); 544 } 545 546 /* This points to the parent struct local_info_t struct */ 547 if (link->priv) 548 kfree(link->priv); 549 550} /* dio700_cs_detach */ 551 552/*====================================================================== 553 554 dio700_config() is scheduled to run after a CARD_INSERTION event 555 is received, to configure the PCMCIA socket, and to make the 556 device available to the system. 557 558======================================================================*/ 559 560static int dio700_pcmcia_config_loop(struct pcmcia_device *p_dev, 561 cistpl_cftable_entry_t *cfg, 562 cistpl_cftable_entry_t *dflt, 563 unsigned int vcc, 564 void *priv_data) 565{ 566 win_req_t *req = priv_data; 567 memreq_t map; 568 569 if (cfg->index == 0) 570 return -ENODEV; 571 572 /* Does this card need audio output? */ 573 if (cfg->flags & CISTPL_CFTABLE_AUDIO) { 574 p_dev->conf.Attributes |= CONF_ENABLE_SPKR; 575 p_dev->conf.Status = CCSR_AUDIO_ENA; 576 } 577 578 /* Do we need to allocate an interrupt? */ 579 if (cfg->irq.IRQInfo1 || dflt->irq.IRQInfo1) 580 p_dev->conf.Attributes |= CONF_ENABLE_IRQ; 581 582 /* IO window settings */ 583 p_dev->io.NumPorts1 = p_dev->io.NumPorts2 = 0; 584 if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) { 585 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io; 586 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; 587 if (!(io->flags & CISTPL_IO_8BIT)) 588 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_16; 589 if (!(io->flags & CISTPL_IO_16BIT)) 590 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8; 591 p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK; 592 p_dev->io.BasePort1 = io->win[0].base; 593 p_dev->io.NumPorts1 = io->win[0].len; 594 if (io->nwin > 1) { 595 p_dev->io.Attributes2 = p_dev->io.Attributes1; 596 p_dev->io.BasePort2 = io->win[1].base; 597 p_dev->io.NumPorts2 = io->win[1].len; 598 } 599 /* This reserves IO space but doesn't actually enable it */ 600 if (pcmcia_request_io(p_dev, &p_dev->io) != 0) 601 return -ENODEV; 602 } 603 604 if ((cfg->mem.nwin > 0) || (dflt->mem.nwin > 0)) { 605 cistpl_mem_t *mem = 606 (cfg->mem.nwin) ? &cfg->mem : &dflt->mem; 607 req->Attributes = WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_CM; 608 req->Attributes |= WIN_ENABLE; 609 req->Base = mem->win[0].host_addr; 610 req->Size = mem->win[0].len; 611 if (req->Size < 0x1000) 612 req->Size = 0x1000; 613 req->AccessSpeed = 0; 614 if (pcmcia_request_window(p_dev, req, &p_dev->win)) 615 return -ENODEV; 616 map.Page = 0; 617 map.CardOffset = mem->win[0].card_addr; 618 if (pcmcia_map_mem_page(p_dev, p_dev->win, &map)) 619 return -ENODEV; 620 } 621 /* If we got this far, we're cool! */ 622 return 0; 623} 624 625static void dio700_config(struct pcmcia_device *link) 626{ 627 struct local_info_t *dev = link->priv; 628 win_req_t req; 629 int ret; 630 631 printk(KERN_INFO "ni_daq_700: cs-config\n"); 632 633 dev_dbg(&link->dev, "dio700_config\n"); 634 635 ret = pcmcia_loop_config(link, dio700_pcmcia_config_loop, &req); 636 if (ret) { 637 dev_warn(&link->dev, "no configuration found\n"); 638 goto failed; 639 } 640 641 /* 642 Allocate an interrupt line. Note that this does not assign a 643 handler to the interrupt, unless the 'Handler' member of the 644 irq structure is initialized. 645 */ 646 if (link->conf.Attributes & CONF_ENABLE_IRQ) { 647 ret = pcmcia_request_irq(link, &link->irq); 648 if (ret) 649 goto failed; 650 } 651 652 /* 653 This actually configures the PCMCIA socket -- setting up 654 the I/O windows and the interrupt mapping, and putting the 655 card and host interface into "Memory and IO" mode. 656 */ 657 ret = pcmcia_request_configuration(link, &link->conf); 658 if (ret != 0) 659 goto failed; 660 661 /* 662 At this point, the dev_node_t structure(s) need to be 663 initialized and arranged in a linked list at link->dev. 664 */ 665 sprintf(dev->node.dev_name, "ni_daq_700"); 666 dev->node.major = dev->node.minor = 0; 667 link->dev_node = &dev->node; 668 669 /* Finally, report what we've done */ 670 printk(KERN_INFO "%s: index 0x%02x", 671 dev->node.dev_name, link->conf.ConfigIndex); 672 if (link->conf.Attributes & CONF_ENABLE_IRQ) 673 printk(", irq %d", link->irq.AssignedIRQ); 674 if (link->io.NumPorts1) 675 printk(", io 0x%04x-0x%04x", link->io.BasePort1, 676 link->io.BasePort1 + link->io.NumPorts1 - 1); 677 if (link->io.NumPorts2) 678 printk(" & 0x%04x-0x%04x", link->io.BasePort2, 679 link->io.BasePort2 + link->io.NumPorts2 - 1); 680 if (link->win) 681 printk(", mem 0x%06lx-0x%06lx", req.Base, 682 req.Base + req.Size - 1); 683 printk("\n"); 684 685 return; 686 687failed: 688 printk(KERN_INFO "ni_daq_700 cs failed"); 689 dio700_release(link); 690 691} /* dio700_config */ 692 693static void dio700_release(struct pcmcia_device *link) 694{ 695 dev_dbg(&link->dev, "dio700_release\n"); 696 697 pcmcia_disable_device(link); 698} /* dio700_release */ 699 700/*====================================================================== 701 702 The card status event handler. Mostly, this schedules other 703 stuff to run after an event is received. 704 705 When a CARD_REMOVAL event is received, we immediately set a 706 private flag to block future accesses to this device. All the 707 functions that actually access the device should check this flag 708 to make sure the card is still present. 709 710======================================================================*/ 711 712static int dio700_cs_suspend(struct pcmcia_device *link) 713{ 714 struct local_info_t *local = link->priv; 715 716 /* Mark the device as stopped, to block IO until later */ 717 local->stop = 1; 718 return 0; 719} /* dio700_cs_suspend */ 720 721static int dio700_cs_resume(struct pcmcia_device *link) 722{ 723 struct local_info_t *local = link->priv; 724 725 local->stop = 0; 726 return 0; 727} /* dio700_cs_resume */ 728 729/*====================================================================*/ 730 731static struct pcmcia_device_id dio700_cs_ids[] = { 732 /* N.B. These IDs should match those in dio700_boards */ 733 PCMCIA_DEVICE_MANF_CARD(0x010b, 0x4743), /* daqcard-700 */ 734 PCMCIA_DEVICE_NULL 735}; 736 737MODULE_LICENSE("GPL"); 738MODULE_DEVICE_TABLE(pcmcia, dio700_cs_ids); 739 740struct pcmcia_driver dio700_cs_driver = { 741 .probe = dio700_cs_attach, 742 .remove = dio700_cs_detach, 743 .suspend = dio700_cs_suspend, 744 .resume = dio700_cs_resume, 745 .id_table = dio700_cs_ids, 746 .owner = THIS_MODULE, 747 .drv = { 748 .name = dev_info, 749 }, 750}; 751 752static int __init init_dio700_cs(void) 753{ 754 pcmcia_register_driver(&dio700_cs_driver); 755 return 0; 756} 757 758static void __exit exit_dio700_cs(void) 759{ 760 pr_debug("ni_daq_700: unloading\n"); 761 pcmcia_unregister_driver(&dio700_cs_driver); 762} 763 764int __init init_module(void) 765{ 766 int ret; 767 768 ret = init_dio700_cs(); 769 if (ret < 0) 770 return ret; 771 772 return comedi_driver_register(&driver_dio700); 773} 774 775void __exit cleanup_module(void) 776{ 777 exit_dio700_cs(); 778 comedi_driver_unregister(&driver_dio700); 779} 780