3 functions for manipulating drivers
5 COMEDI - Linux Control and Measurement Device Interface
6 Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org>
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #define __NO_VERSION__
27 #include "comedi_fops.h"
28 #include <linux/device.h>
29 #include <linux/module.h>
30 #include <linux/pci.h>
31 #include <linux/usb.h>
32 #include <linux/errno.h>
33 #include <linux/kconfig.h>
34 #include <linux/kernel.h>
35 #include <linux/sched.h>
36 #include <linux/fcntl.h>
37 #include <linux/delay.h>
38 #include <linux/ioport.h>
40 #include <linux/slab.h>
41 #include <linux/highmem.h> /* for SuSE brokenness */
42 #include <linux/vmalloc.h>
43 #include <linux/cdev.h>
44 #include <linux/dma-mapping.h>
47 #include "comedidev.h"
50 static int postconfig(struct comedi_device *dev);
51 static int insn_rw_emulate_bits(struct comedi_device *dev,
52 struct comedi_subdevice *s,
53 struct comedi_insn *insn, unsigned int *data);
54 static void *comedi_recognize(struct comedi_driver *driv, const char *name);
55 static void comedi_report_boards(struct comedi_driver *driv);
56 static int poll_invalid(struct comedi_device *dev, struct comedi_subdevice *s);
58 struct comedi_driver *comedi_drivers;
60 static void cleanup_device(struct comedi_device *dev)
63 struct comedi_subdevice *s;
65 if (dev->subdevices) {
66 for (i = 0; i < dev->n_subdevices; i++) {
67 s = dev->subdevices + i;
68 comedi_free_subdevice_minor(s);
70 comedi_buf_alloc(dev, s, 0);
74 kfree(dev->subdevices);
75 dev->subdevices = NULL;
76 dev->n_subdevices = 0;
81 dev->board_name = NULL;
82 dev->board_ptr = NULL;
85 dev->read_subdev = NULL;
86 dev->write_subdev = NULL;
89 comedi_set_hw_dev(dev, NULL);
92 static void __comedi_device_detach(struct comedi_device *dev)
96 dev->driver->detach(dev);
99 "BUG: dev->driver=NULL in comedi_device_detach()\n");
103 void comedi_device_detach(struct comedi_device *dev)
107 __comedi_device_detach(dev);
110 /* do a little post-config cleanup */
111 /* called with module refcount incremented, decrements it */
112 static int comedi_device_postconfig(struct comedi_device *dev)
114 int ret = postconfig(dev);
115 module_put(dev->driver->module);
117 __comedi_device_detach(dev);
120 if (!dev->board_name) {
121 printk(KERN_WARNING "BUG: dev->board_name=<%p>\n",
123 dev->board_name = "BUG";
130 int comedi_device_attach(struct comedi_device *dev, struct comedi_devconfig *it)
132 struct comedi_driver *driv;
138 for (driv = comedi_drivers; driv; driv = driv->next) {
139 if (!try_module_get(driv->module)) {
140 printk(KERN_INFO "comedi: failed to increment module count, skipping\n");
143 if (driv->num_names) {
144 dev->board_ptr = comedi_recognize(driv, it->board_name);
147 } else if (strcmp(driv->driver_name, it->board_name))
149 module_put(driv->module);
152 /* recognize has failed if we get here */
153 /* report valid board names before returning error */
154 for (driv = comedi_drivers; driv; driv = driv->next) {
155 if (!try_module_get(driv->module)) {
157 "comedi: failed to increment module count\n");
160 comedi_report_boards(driv);
161 module_put(driv->module);
165 /* initialize dev->driver here so
166 * comedi_error() can be called from attach */
168 ret = driv->attach(dev, it);
170 module_put(dev->driver->module);
171 __comedi_device_detach(dev);
174 return comedi_device_postconfig(dev);
177 int comedi_driver_register(struct comedi_driver *driver)
179 driver->next = comedi_drivers;
180 comedi_drivers = driver;
184 EXPORT_SYMBOL(comedi_driver_register);
186 int comedi_driver_unregister(struct comedi_driver *driver)
188 struct comedi_driver *prev;
191 /* check for devices using this driver */
192 for (i = 0; i < COMEDI_NUM_BOARD_MINORS; i++) {
193 struct comedi_device_file_info *dev_file_info =
194 comedi_get_device_file_info(i);
195 struct comedi_device *dev;
197 if (dev_file_info == NULL)
199 dev = dev_file_info->device;
201 mutex_lock(&dev->mutex);
202 if (dev->attached && dev->driver == driver) {
204 printk(KERN_WARNING "BUG! detaching device with use_count=%d\n",
206 comedi_device_detach(dev);
208 mutex_unlock(&dev->mutex);
211 if (comedi_drivers == driver) {
212 comedi_drivers = driver->next;
216 for (prev = comedi_drivers; prev->next; prev = prev->next) {
217 if (prev->next == driver) {
218 prev->next = driver->next;
224 EXPORT_SYMBOL(comedi_driver_unregister);
226 static int postconfig(struct comedi_device *dev)
229 struct comedi_subdevice *s;
230 struct comedi_async *async = NULL;
233 for (i = 0; i < dev->n_subdevices; i++) {
234 s = dev->subdevices + i;
236 if (s->type == COMEDI_SUBD_UNUSED)
239 if (s->len_chanlist == 0)
243 unsigned int buf_size;
245 BUG_ON((s->subdev_flags & (SDF_CMD_READ |
246 SDF_CMD_WRITE)) == 0);
247 BUG_ON(!s->do_cmdtest);
250 kzalloc(sizeof(struct comedi_async), GFP_KERNEL);
253 "failed to allocate async struct\n");
256 init_waitqueue_head(&async->wait_head);
257 async->subdevice = s;
261 comedi_default_buf_maxsize_kb * 1024;
262 buf_size = comedi_default_buf_size_kb * 1024;
263 if (buf_size > async->max_bufsize)
264 buf_size = async->max_bufsize;
266 async->prealloc_buf = NULL;
267 async->prealloc_bufsz = 0;
268 if (comedi_buf_alloc(dev, s, buf_size) < 0) {
269 printk(KERN_INFO "Buffer allocation failed\n");
273 ret = s->buf_change(dev, s, buf_size);
277 comedi_alloc_subdevice_minor(dev, s);
280 if (!s->range_table && !s->range_table_list)
281 s->range_table = &range_unknown;
283 if (!s->insn_read && s->insn_bits)
284 s->insn_read = insn_rw_emulate_bits;
285 if (!s->insn_write && s->insn_bits)
286 s->insn_write = insn_rw_emulate_bits;
289 s->insn_read = insn_inval;
291 s->insn_write = insn_inval;
293 s->insn_bits = insn_inval;
295 s->insn_config = insn_inval;
298 s->poll = poll_invalid;
304 /* generic recognize function for drivers
305 * that register their supported board names */
306 static void *comedi_recognize(struct comedi_driver *driv, const char *name)
309 const char *const *name_ptr = driv->board_name;
310 for (i = 0; i < driv->num_names; i++) {
311 if (strcmp(*name_ptr, name) == 0)
312 return (void *)name_ptr;
314 (const char *const *)((const char *)name_ptr +
321 static void comedi_report_boards(struct comedi_driver *driv)
324 const char *const *name_ptr;
326 printk(KERN_INFO "comedi: valid board names for %s driver are:\n",
329 name_ptr = driv->board_name;
330 for (i = 0; i < driv->num_names; i++) {
331 printk(KERN_INFO " %s\n", *name_ptr);
332 name_ptr = (const char **)((char *)name_ptr + driv->offset);
335 if (driv->num_names == 0)
336 printk(KERN_INFO " %s\n", driv->driver_name);
339 static int poll_invalid(struct comedi_device *dev, struct comedi_subdevice *s)
344 int insn_inval(struct comedi_device *dev, struct comedi_subdevice *s,
345 struct comedi_insn *insn, unsigned int *data)
350 static int insn_rw_emulate_bits(struct comedi_device *dev,
351 struct comedi_subdevice *s,
352 struct comedi_insn *insn, unsigned int *data)
354 struct comedi_insn new_insn;
356 static const unsigned channels_per_bitfield = 32;
358 unsigned chan = CR_CHAN(insn->chanspec);
359 const unsigned base_bitfield_channel =
360 (chan < channels_per_bitfield) ? 0 : chan;
361 unsigned int new_data[2];
362 memset(new_data, 0, sizeof(new_data));
363 memset(&new_insn, 0, sizeof(new_insn));
364 new_insn.insn = INSN_BITS;
365 new_insn.chanspec = base_bitfield_channel;
367 new_insn.data = new_data;
368 new_insn.subdev = insn->subdev;
370 if (insn->insn == INSN_WRITE) {
371 if (!(s->subdev_flags & SDF_WRITABLE))
373 new_data[0] = 1 << (chan - base_bitfield_channel); /* mask */
374 new_data[1] = data[0] ? (1 << (chan - base_bitfield_channel))
378 ret = s->insn_bits(dev, s, &new_insn, new_data);
382 if (insn->insn == INSN_READ)
383 data[0] = (new_data[1] >> (chan - base_bitfield_channel)) & 1;
388 static inline unsigned long uvirt_to_kva(pgd_t *pgd, unsigned long adr)
390 unsigned long ret = 0UL;
395 if (!pgd_none(*pgd)) {
396 pud = pud_offset(pgd, adr);
397 pmd = pmd_offset(pud, adr);
398 if (!pmd_none(*pmd)) {
399 ptep = pte_offset_kernel(pmd, adr);
401 if (pte_present(pte)) {
402 ret = (unsigned long)
403 page_address(pte_page(pte));
404 ret |= (adr & (PAGE_SIZE - 1));
411 static inline unsigned long kvirt_to_kva(unsigned long adr)
413 unsigned long va, kva;
416 kva = uvirt_to_kva(pgd_offset_k(va), va);
421 int comedi_buf_alloc(struct comedi_device *dev, struct comedi_subdevice *s,
422 unsigned long new_size)
424 struct comedi_async *async = s->async;
426 /* Round up new_size to multiple of PAGE_SIZE */
427 new_size = (new_size + PAGE_SIZE - 1) & PAGE_MASK;
429 /* if no change is required, do nothing */
430 if (async->prealloc_buf && async->prealloc_bufsz == new_size)
433 /* deallocate old buffer */
434 if (async->prealloc_buf) {
435 vunmap(async->prealloc_buf);
436 async->prealloc_buf = NULL;
437 async->prealloc_bufsz = 0;
439 if (async->buf_page_list) {
441 for (i = 0; i < async->n_buf_pages; ++i) {
442 if (async->buf_page_list[i].virt_addr) {
443 clear_bit(PG_reserved,
444 &(virt_to_page(async->buf_page_list[i].
446 if (s->async_dma_dir != DMA_NONE) {
447 dma_free_coherent(dev->hw_dev,
456 free_page((unsigned long)
457 async->buf_page_list[i].
462 vfree(async->buf_page_list);
463 async->buf_page_list = NULL;
464 async->n_buf_pages = 0;
466 /* allocate new buffer */
469 unsigned n_pages = new_size >> PAGE_SHIFT;
470 struct page **pages = NULL;
472 async->buf_page_list =
473 vzalloc(sizeof(struct comedi_buf_page) * n_pages);
474 if (async->buf_page_list)
475 pages = vmalloc(sizeof(struct page *) * n_pages);
478 for (i = 0; i < n_pages; i++) {
479 if (s->async_dma_dir != DMA_NONE) {
480 async->buf_page_list[i].virt_addr =
481 dma_alloc_coherent(dev->hw_dev,
489 async->buf_page_list[i].virt_addr =
491 get_zeroed_page(GFP_KERNEL);
493 if (async->buf_page_list[i].virt_addr == NULL)
497 &(virt_to_page(async->buf_page_list[i].
499 pages[i] = virt_to_page(async->buf_page_list[i].
504 async->prealloc_buf =
505 #ifdef PAGE_KERNEL_NOCACHE
506 vmap(pages, n_pages, VM_MAP, PAGE_KERNEL_NOCACHE);
508 vmap(pages, n_pages, VM_MAP, PAGE_KERNEL);
513 if (async->prealloc_buf == NULL) {
514 /* Some allocation failed above. */
515 if (async->buf_page_list) {
516 for (i = 0; i < n_pages; i++) {
517 if (async->buf_page_list[i].virt_addr ==
521 clear_bit(PG_reserved,
522 &(virt_to_page(async->
525 if (s->async_dma_dir != DMA_NONE) {
526 dma_free_coherent(dev->hw_dev,
535 free_page((unsigned long)
540 vfree(async->buf_page_list);
541 async->buf_page_list = NULL;
545 async->n_buf_pages = n_pages;
547 async->prealloc_bufsz = new_size;
552 /* munging is applied to data by core as it passes between user
553 * and kernel space */
554 static unsigned int comedi_buf_munge(struct comedi_async *async,
555 unsigned int num_bytes)
557 struct comedi_subdevice *s = async->subdevice;
558 unsigned int count = 0;
559 const unsigned num_sample_bytes = bytes_per_sample(s);
561 if (s->munge == NULL || (async->cmd.flags & CMDF_RAWDATA)) {
562 async->munge_count += num_bytes;
563 BUG_ON((int)(async->munge_count - async->buf_write_count) > 0);
566 /* don't munge partial samples */
567 num_bytes -= num_bytes % num_sample_bytes;
568 while (count < num_bytes) {
571 block_size = num_bytes - count;
572 if (block_size < 0) {
574 "%s: %s: bug! block_size is negative\n",
578 if ((int)(async->munge_ptr + block_size -
579 async->prealloc_bufsz) > 0)
580 block_size = async->prealloc_bufsz - async->munge_ptr;
582 s->munge(s->device, s, async->prealloc_buf + async->munge_ptr,
583 block_size, async->munge_chan);
585 smp_wmb(); /* barrier insures data is munged in buffer
586 * before munge_count is incremented */
588 async->munge_chan += block_size / num_sample_bytes;
589 async->munge_chan %= async->cmd.chanlist_len;
590 async->munge_count += block_size;
591 async->munge_ptr += block_size;
592 async->munge_ptr %= async->prealloc_bufsz;
595 BUG_ON((int)(async->munge_count - async->buf_write_count) > 0);
599 unsigned int comedi_buf_write_n_available(struct comedi_async *async)
601 unsigned int free_end;
607 free_end = async->buf_read_count + async->prealloc_bufsz;
608 nbytes = free_end - async->buf_write_alloc_count;
609 nbytes -= nbytes % bytes_per_sample(async->subdevice);
610 /* barrier insures the read of buf_read_count in this
611 query occurs before any following writes to the buffer which
612 might be based on the return value from this query.
618 /* allocates chunk for the writer from free buffer space */
619 unsigned int comedi_buf_write_alloc(struct comedi_async *async,
622 unsigned int free_end = async->buf_read_count + async->prealloc_bufsz;
624 if ((int)(async->buf_write_alloc_count + nbytes - free_end) > 0)
625 nbytes = free_end - async->buf_write_alloc_count;
627 async->buf_write_alloc_count += nbytes;
628 /* barrier insures the read of buf_read_count above occurs before
629 we write data to the write-alloc'ed buffer space */
633 EXPORT_SYMBOL(comedi_buf_write_alloc);
635 /* allocates nothing unless it can completely fulfill the request */
636 unsigned int comedi_buf_write_alloc_strict(struct comedi_async *async,
639 unsigned int free_end = async->buf_read_count + async->prealloc_bufsz;
641 if ((int)(async->buf_write_alloc_count + nbytes - free_end) > 0)
644 async->buf_write_alloc_count += nbytes;
645 /* barrier insures the read of buf_read_count above occurs before
646 we write data to the write-alloc'ed buffer space */
651 /* transfers a chunk from writer to filled buffer space */
652 unsigned comedi_buf_write_free(struct comedi_async *async, unsigned int nbytes)
654 if ((int)(async->buf_write_count + nbytes -
655 async->buf_write_alloc_count) > 0) {
656 printk(KERN_INFO "comedi: attempted to write-free more bytes than have been write-allocated.\n");
657 nbytes = async->buf_write_alloc_count - async->buf_write_count;
659 async->buf_write_count += nbytes;
660 async->buf_write_ptr += nbytes;
661 comedi_buf_munge(async, async->buf_write_count - async->munge_count);
662 if (async->buf_write_ptr >= async->prealloc_bufsz)
663 async->buf_write_ptr %= async->prealloc_bufsz;
667 EXPORT_SYMBOL(comedi_buf_write_free);
669 /* allocates a chunk for the reader from filled (and munged) buffer space */
670 unsigned comedi_buf_read_alloc(struct comedi_async *async, unsigned nbytes)
672 if ((int)(async->buf_read_alloc_count + nbytes - async->munge_count) >
674 nbytes = async->munge_count - async->buf_read_alloc_count;
676 async->buf_read_alloc_count += nbytes;
677 /* barrier insures read of munge_count occurs before we actually read
678 data out of buffer */
682 EXPORT_SYMBOL(comedi_buf_read_alloc);
684 /* transfers control of a chunk from reader to free buffer space */
685 unsigned comedi_buf_read_free(struct comedi_async *async, unsigned int nbytes)
687 /* barrier insures data has been read out of
688 * buffer before read count is incremented */
690 if ((int)(async->buf_read_count + nbytes -
691 async->buf_read_alloc_count) > 0) {
693 "comedi: attempted to read-free more bytes than have been read-allocated.\n");
694 nbytes = async->buf_read_alloc_count - async->buf_read_count;
696 async->buf_read_count += nbytes;
697 async->buf_read_ptr += nbytes;
698 async->buf_read_ptr %= async->prealloc_bufsz;
701 EXPORT_SYMBOL(comedi_buf_read_free);
703 void comedi_buf_memcpy_to(struct comedi_async *async, unsigned int offset,
704 const void *data, unsigned int num_bytes)
706 unsigned int write_ptr = async->buf_write_ptr + offset;
708 if (write_ptr >= async->prealloc_bufsz)
709 write_ptr %= async->prealloc_bufsz;
712 unsigned int block_size;
714 if (write_ptr + num_bytes > async->prealloc_bufsz)
715 block_size = async->prealloc_bufsz - write_ptr;
717 block_size = num_bytes;
719 memcpy(async->prealloc_buf + write_ptr, data, block_size);
722 num_bytes -= block_size;
727 EXPORT_SYMBOL(comedi_buf_memcpy_to);
729 void comedi_buf_memcpy_from(struct comedi_async *async, unsigned int offset,
730 void *dest, unsigned int nbytes)
733 unsigned int read_ptr = async->buf_read_ptr + offset;
735 if (read_ptr >= async->prealloc_bufsz)
736 read_ptr %= async->prealloc_bufsz;
739 unsigned int block_size;
741 src = async->prealloc_buf + read_ptr;
743 if (nbytes >= async->prealloc_bufsz - read_ptr)
744 block_size = async->prealloc_bufsz - read_ptr;
748 memcpy(dest, src, block_size);
749 nbytes -= block_size;
754 EXPORT_SYMBOL(comedi_buf_memcpy_from);
756 unsigned int comedi_buf_read_n_available(struct comedi_async *async)
762 num_bytes = async->munge_count - async->buf_read_count;
763 /* barrier insures the read of munge_count in this
764 query occurs before any following reads of the buffer which
765 might be based on the return value from this query.
770 EXPORT_SYMBOL(comedi_buf_read_n_available);
772 int comedi_buf_get(struct comedi_async *async, short *x)
774 unsigned int n = comedi_buf_read_n_available(async);
776 if (n < sizeof(short))
778 comedi_buf_read_alloc(async, sizeof(short));
779 *x = *(short *)(async->prealloc_buf + async->buf_read_ptr);
780 comedi_buf_read_free(async, sizeof(short));
783 EXPORT_SYMBOL(comedi_buf_get);
785 int comedi_buf_put(struct comedi_async *async, short x)
787 unsigned int n = comedi_buf_write_alloc_strict(async, sizeof(short));
789 if (n < sizeof(short)) {
790 async->events |= COMEDI_CB_ERROR;
793 *(short *)(async->prealloc_buf + async->buf_write_ptr) = x;
794 comedi_buf_write_free(async, sizeof(short));
797 EXPORT_SYMBOL(comedi_buf_put);
799 void comedi_reset_async_buf(struct comedi_async *async)
801 async->buf_write_alloc_count = 0;
802 async->buf_write_count = 0;
803 async->buf_read_alloc_count = 0;
804 async->buf_read_count = 0;
806 async->buf_write_ptr = 0;
807 async->buf_read_ptr = 0;
810 async->scan_progress = 0;
811 async->munge_chan = 0;
812 async->munge_count = 0;
813 async->munge_ptr = 0;
819 comedi_auto_config_helper(struct device *hardware_device,
820 struct comedi_driver *driver,
821 int (*attach_wrapper) (struct comedi_device *,
822 void *), void *context)
825 struct comedi_device_file_info *dev_file_info;
826 struct comedi_device *comedi_dev;
829 if (!comedi_autoconfig)
832 minor = comedi_alloc_board_minor(hardware_device);
836 dev_file_info = comedi_get_device_file_info(minor);
837 comedi_dev = dev_file_info->device;
839 mutex_lock(&comedi_dev->mutex);
840 if (comedi_dev->attached)
842 else if (!try_module_get(driver->module)) {
843 printk(KERN_INFO "comedi: failed to increment module count\n");
846 /* set comedi_dev->driver here for attach wrapper */
847 comedi_dev->driver = driver;
848 ret = (*attach_wrapper)(comedi_dev, context);
850 module_put(driver->module);
851 __comedi_device_detach(comedi_dev);
853 ret = comedi_device_postconfig(comedi_dev);
856 mutex_unlock(&comedi_dev->mutex);
859 comedi_free_board_minor(minor);
863 static int comedi_auto_config_wrapper(struct comedi_device *dev, void *context)
865 struct comedi_devconfig *it = context;
866 struct comedi_driver *driv = dev->driver;
868 if (driv->num_names) {
869 /* look for generic board entry matching driver name, which
870 * has already been copied to it->board_name */
871 dev->board_ptr = comedi_recognize(driv, it->board_name);
872 if (dev->board_ptr == NULL) {
874 "comedi: auto config failed to find board entry"
875 " '%s' for driver '%s'\n", it->board_name,
877 comedi_report_boards(driv);
881 return driv->attach(dev, it);
884 static int comedi_auto_config(struct device *hardware_device,
885 struct comedi_driver *driver, const int *options,
886 unsigned num_options)
888 struct comedi_devconfig it;
890 memset(&it, 0, sizeof(it));
891 strncpy(it.board_name, driver->driver_name, COMEDI_NAMELEN);
892 it.board_name[COMEDI_NAMELEN - 1] = '\0';
893 BUG_ON(num_options > COMEDI_NDEVCONFOPTS);
894 memcpy(it.options, options, num_options * sizeof(int));
895 return comedi_auto_config_helper(hardware_device, driver,
896 comedi_auto_config_wrapper, &it);
899 static void comedi_auto_unconfig(struct device *hardware_device)
903 if (hardware_device == NULL)
905 minor = comedi_find_board_minor(hardware_device);
908 BUG_ON(minor >= COMEDI_NUM_BOARD_MINORS);
909 comedi_free_board_minor(minor);
912 static int comedi_old_pci_auto_config(struct pci_dev *pcidev,
913 struct comedi_driver *driver)
918 options[0] = pcidev->bus->number;
920 options[1] = PCI_SLOT(pcidev->devfn);
922 return comedi_auto_config(&pcidev->dev, driver,
923 options, ARRAY_SIZE(options));
926 static int comedi_pci_attach_wrapper(struct comedi_device *dev, void *pcidev)
928 return dev->driver->attach_pci(dev, pcidev);
931 static int comedi_new_pci_auto_config(struct pci_dev *pcidev,
932 struct comedi_driver *driver)
934 return comedi_auto_config_helper(&pcidev->dev, driver,
935 comedi_pci_attach_wrapper, pcidev);
938 int comedi_pci_auto_config(struct pci_dev *pcidev, struct comedi_driver *driver)
941 if (driver->attach_pci)
942 return comedi_new_pci_auto_config(pcidev, driver);
944 return comedi_old_pci_auto_config(pcidev, driver);
946 EXPORT_SYMBOL_GPL(comedi_pci_auto_config);
948 void comedi_pci_auto_unconfig(struct pci_dev *pcidev)
950 comedi_auto_unconfig(&pcidev->dev);
952 EXPORT_SYMBOL_GPL(comedi_pci_auto_unconfig);
954 int comedi_pci_driver_register(struct comedi_driver *comedi_driver,
955 struct pci_driver *pci_driver)
959 ret = comedi_driver_register(comedi_driver);
963 /* FIXME: Remove this test after auditing all comedi pci drivers */
964 if (!pci_driver->name)
965 pci_driver->name = comedi_driver->driver_name;
967 ret = pci_register_driver(pci_driver);
969 comedi_driver_unregister(comedi_driver);
975 EXPORT_SYMBOL_GPL(comedi_pci_driver_register);
977 void comedi_pci_driver_unregister(struct comedi_driver *comedi_driver,
978 struct pci_driver *pci_driver)
980 pci_unregister_driver(pci_driver);
981 comedi_driver_unregister(comedi_driver);
983 EXPORT_SYMBOL_GPL(comedi_pci_driver_unregister);
985 #if IS_ENABLED(CONFIG_USB)
987 static int comedi_old_usb_auto_config(struct usb_interface *intf,
988 struct comedi_driver *driver)
990 return comedi_auto_config(&intf->dev, driver, NULL, 0);
993 static int comedi_usb_attach_wrapper(struct comedi_device *dev, void *intf)
995 return dev->driver->attach_usb(dev, intf);
998 static int comedi_new_usb_auto_config(struct usb_interface *intf,
999 struct comedi_driver *driver)
1001 return comedi_auto_config_helper(&intf->dev, driver,
1002 comedi_usb_attach_wrapper, intf);
1005 int comedi_usb_auto_config(struct usb_interface *intf,
1006 struct comedi_driver *driver)
1008 BUG_ON(intf == NULL);
1009 if (driver->attach_usb)
1010 return comedi_new_usb_auto_config(intf, driver);
1012 return comedi_old_usb_auto_config(intf, driver);
1014 EXPORT_SYMBOL_GPL(comedi_usb_auto_config);
1016 void comedi_usb_auto_unconfig(struct usb_interface *intf)
1018 BUG_ON(intf == NULL);
1019 comedi_auto_unconfig(&intf->dev);
1021 EXPORT_SYMBOL_GPL(comedi_usb_auto_unconfig);
1023 int comedi_usb_driver_register(struct comedi_driver *comedi_driver,
1024 struct usb_driver *usb_driver)
1028 ret = comedi_driver_register(comedi_driver);
1032 ret = usb_register(usb_driver);
1034 comedi_driver_unregister(comedi_driver);
1040 EXPORT_SYMBOL_GPL(comedi_usb_driver_register);
1042 void comedi_usb_driver_unregister(struct comedi_driver *comedi_driver,
1043 struct usb_driver *usb_driver)
1045 usb_deregister(usb_driver);
1046 comedi_driver_unregister(comedi_driver);
1048 EXPORT_SYMBOL_GPL(comedi_usb_driver_unregister);