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-rw-r--r--drivers/input/input.c389
1 files changed, 198 insertions, 191 deletions
diff --git a/drivers/input/input.c b/drivers/input/input.c
index 7c4b4d37b3e6..1ea4f1accef6 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -48,12 +48,6 @@ static LIST_HEAD(input_handler_list);
48 48
49static struct input_handler *input_table[8]; 49static struct input_handler *input_table[8];
50 50
51#ifdef CONFIG_PROC_FS
52static struct proc_dir_entry *proc_bus_input_dir;
53static DECLARE_WAIT_QUEUE_HEAD(input_devices_poll_wait);
54static int input_devices_state;
55#endif
56
57void input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) 51void input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
58{ 52{
59 struct input_handle *handle; 53 struct input_handle *handle;
@@ -312,6 +306,7 @@ static struct input_device_id *input_match_device(struct input_device_id *id, st
312 return NULL; 306 return NULL;
313} 307}
314 308
309
315/* 310/*
316 * Input hotplugging interface - loading event handlers based on 311 * Input hotplugging interface - loading event handlers based on
317 * device bitfields. 312 * device bitfields.
@@ -428,6 +423,177 @@ static void input_call_hotplug(char *verb, struct input_dev *dev)
428 423
429#endif 424#endif
430 425
426#ifdef CONFIG_PROC_FS
427
428static struct proc_dir_entry *proc_bus_input_dir;
429static DECLARE_WAIT_QUEUE_HEAD(input_devices_poll_wait);
430static int input_devices_state;
431
432static inline void input_wakeup_procfs_readers(void)
433{
434 input_devices_state++;
435 wake_up(&input_devices_poll_wait);
436}
437
438static unsigned int input_devices_poll(struct file *file, poll_table *wait)
439{
440 int state = input_devices_state;
441 poll_wait(file, &input_devices_poll_wait, wait);
442 if (state != input_devices_state)
443 return POLLIN | POLLRDNORM;
444 return 0;
445}
446
447#define SPRINTF_BIT_B(bit, name, max) \
448 do { \
449 len += sprintf(buf + len, "B: %s", name); \
450 for (i = NBITS(max) - 1; i >= 0; i--) \
451 if (dev->bit[i]) break; \
452 for (; i >= 0; i--) \
453 len += sprintf(buf + len, "%lx ", dev->bit[i]); \
454 len += sprintf(buf + len, "\n"); \
455 } while (0)
456
457#define SPRINTF_BIT_B2(bit, name, max, ev) \
458 do { \
459 if (test_bit(ev, dev->evbit)) \
460 SPRINTF_BIT_B(bit, name, max); \
461 } while (0)
462
463static int input_devices_read(char *buf, char **start, off_t pos, int count, int *eof, void *data)
464{
465 struct input_dev *dev;
466 struct input_handle *handle;
467
468 off_t at = 0;
469 int i, len, cnt = 0;
470
471 list_for_each_entry(dev, &input_dev_list, node) {
472
473 len = sprintf(buf, "I: Bus=%04x Vendor=%04x Product=%04x Version=%04x\n",
474 dev->id.bustype, dev->id.vendor, dev->id.product, dev->id.version);
475
476 len += sprintf(buf + len, "N: Name=\"%s\"\n", dev->name ? dev->name : "");
477 len += sprintf(buf + len, "P: Phys=%s\n", dev->phys ? dev->phys : "");
478 len += sprintf(buf + len, "H: Handlers=");
479
480 list_for_each_entry(handle, &dev->h_list, d_node)
481 len += sprintf(buf + len, "%s ", handle->name);
482
483 len += sprintf(buf + len, "\n");
484
485 SPRINTF_BIT_B(evbit, "EV=", EV_MAX);
486 SPRINTF_BIT_B2(keybit, "KEY=", KEY_MAX, EV_KEY);
487 SPRINTF_BIT_B2(relbit, "REL=", REL_MAX, EV_REL);
488 SPRINTF_BIT_B2(absbit, "ABS=", ABS_MAX, EV_ABS);
489 SPRINTF_BIT_B2(mscbit, "MSC=", MSC_MAX, EV_MSC);
490 SPRINTF_BIT_B2(ledbit, "LED=", LED_MAX, EV_LED);
491 SPRINTF_BIT_B2(sndbit, "SND=", SND_MAX, EV_SND);
492 SPRINTF_BIT_B2(ffbit, "FF=", FF_MAX, EV_FF);
493
494 len += sprintf(buf + len, "\n");
495
496 at += len;
497
498 if (at >= pos) {
499 if (!*start) {
500 *start = buf + (pos - (at - len));
501 cnt = at - pos;
502 } else cnt += len;
503 buf += len;
504 if (cnt >= count)
505 break;
506 }
507 }
508
509 if (&dev->node == &input_dev_list)
510 *eof = 1;
511
512 return (count > cnt) ? cnt : count;
513}
514
515static int input_handlers_read(char *buf, char **start, off_t pos, int count, int *eof, void *data)
516{
517 struct input_handler *handler;
518
519 off_t at = 0;
520 int len = 0, cnt = 0;
521 int i = 0;
522
523 list_for_each_entry(handler, &input_handler_list, node) {
524
525 if (handler->fops)
526 len = sprintf(buf, "N: Number=%d Name=%s Minor=%d\n",
527 i++, handler->name, handler->minor);
528 else
529 len = sprintf(buf, "N: Number=%d Name=%s\n",
530 i++, handler->name);
531
532 at += len;
533
534 if (at >= pos) {
535 if (!*start) {
536 *start = buf + (pos - (at - len));
537 cnt = at - pos;
538 } else cnt += len;
539 buf += len;
540 if (cnt >= count)
541 break;
542 }
543 }
544 if (&handler->node == &input_handler_list)
545 *eof = 1;
546
547 return (count > cnt) ? cnt : count;
548}
549
550static struct file_operations input_fileops;
551
552static int __init input_proc_init(void)
553{
554 struct proc_dir_entry *entry;
555
556 proc_bus_input_dir = proc_mkdir("input", proc_bus);
557 if (!proc_bus_input_dir)
558 return -ENOMEM;
559
560 proc_bus_input_dir->owner = THIS_MODULE;
561
562 entry = create_proc_read_entry("devices", 0, proc_bus_input_dir, input_devices_read, NULL);
563 if (!entry)
564 goto fail1;
565
566 entry->owner = THIS_MODULE;
567 input_fileops = *entry->proc_fops;
568 entry->proc_fops = &input_fileops;
569 entry->proc_fops->poll = input_devices_poll;
570
571 entry = create_proc_read_entry("handlers", 0, proc_bus_input_dir, input_handlers_read, NULL);
572 if (!entry)
573 goto fail2;
574
575 entry->owner = THIS_MODULE;
576
577 return 0;
578
579 fail2: remove_proc_entry("devices", proc_bus_input_dir);
580 fail1: remove_proc_entry("input", proc_bus);
581 return -ENOMEM;
582}
583
584static void __exit input_proc_exit(void)
585{
586 remove_proc_entry("devices", proc_bus_input_dir);
587 remove_proc_entry("handlers", proc_bus_input_dir);
588 remove_proc_entry("input", proc_bus);
589}
590
591#else /* !CONFIG_PROC_FS */
592static inline void input_wakeup_procfs_readers(void) { }
593static inline int input_proc_init(void) { return 0; }
594static inline void input_proc_exit(void) { }
595#endif
596
431void input_register_device(struct input_dev *dev) 597void input_register_device(struct input_dev *dev)
432{ 598{
433 struct input_handle *handle; 599 struct input_handle *handle;
@@ -464,10 +630,7 @@ void input_register_device(struct input_dev *dev)
464 input_call_hotplug("add", dev); 630 input_call_hotplug("add", dev);
465#endif 631#endif
466 632
467#ifdef CONFIG_PROC_FS 633 input_wakeup_procfs_readers();
468 input_devices_state++;
469 wake_up(&input_devices_poll_wait);
470#endif
471} 634}
472 635
473void input_unregister_device(struct input_dev *dev) 636void input_unregister_device(struct input_dev *dev)
@@ -491,10 +654,7 @@ void input_unregister_device(struct input_dev *dev)
491 654
492 list_del_init(&dev->node); 655 list_del_init(&dev->node);
493 656
494#ifdef CONFIG_PROC_FS 657 input_wakeup_procfs_readers();
495 input_devices_state++;
496 wake_up(&input_devices_poll_wait);
497#endif
498} 658}
499 659
500void input_register_handler(struct input_handler *handler) 660void input_register_handler(struct input_handler *handler)
@@ -518,10 +678,7 @@ void input_register_handler(struct input_handler *handler)
518 if ((handle = handler->connect(handler, dev, id))) 678 if ((handle = handler->connect(handler, dev, id)))
519 input_link_handle(handle); 679 input_link_handle(handle);
520 680
521#ifdef CONFIG_PROC_FS 681 input_wakeup_procfs_readers();
522 input_devices_state++;
523 wake_up(&input_devices_poll_wait);
524#endif
525} 682}
526 683
527void input_unregister_handler(struct input_handler *handler) 684void input_unregister_handler(struct input_handler *handler)
@@ -540,10 +697,7 @@ void input_unregister_handler(struct input_handler *handler)
540 if (handler->fops != NULL) 697 if (handler->fops != NULL)
541 input_table[handler->minor >> 5] = NULL; 698 input_table[handler->minor >> 5] = NULL;
542 699
543#ifdef CONFIG_PROC_FS 700 input_wakeup_procfs_readers();
544 input_devices_state++;
545 wake_up(&input_devices_poll_wait);
546#endif
547} 701}
548 702
549static int input_open_file(struct inode *inode, struct file *file) 703static int input_open_file(struct inode *inode, struct file *file)
@@ -582,190 +736,43 @@ static struct file_operations input_fops = {
582 .open = input_open_file, 736 .open = input_open_file,
583}; 737};
584 738
585#ifdef CONFIG_PROC_FS 739struct class *input_class;
586
587#define SPRINTF_BIT_B(bit, name, max) \
588 do { \
589 len += sprintf(buf + len, "B: %s", name); \
590 for (i = NBITS(max) - 1; i >= 0; i--) \
591 if (dev->bit[i]) break; \
592 for (; i >= 0; i--) \
593 len += sprintf(buf + len, "%lx ", dev->bit[i]); \
594 len += sprintf(buf + len, "\n"); \
595 } while (0)
596
597#define SPRINTF_BIT_B2(bit, name, max, ev) \
598 do { \
599 if (test_bit(ev, dev->evbit)) \
600 SPRINTF_BIT_B(bit, name, max); \
601 } while (0)
602
603
604static unsigned int input_devices_poll(struct file *file, poll_table *wait)
605{
606 int state = input_devices_state;
607 poll_wait(file, &input_devices_poll_wait, wait);
608 if (state != input_devices_state)
609 return POLLIN | POLLRDNORM;
610 return 0;
611}
612 740
613static int input_devices_read(char *buf, char **start, off_t pos, int count, int *eof, void *data) 741static int __init input_init(void)
614{ 742{
615 struct input_dev *dev; 743 int err;
616 struct input_handle *handle;
617
618 off_t at = 0;
619 int i, len, cnt = 0;
620
621 list_for_each_entry(dev, &input_dev_list, node) {
622
623 len = sprintf(buf, "I: Bus=%04x Vendor=%04x Product=%04x Version=%04x\n",
624 dev->id.bustype, dev->id.vendor, dev->id.product, dev->id.version);
625
626 len += sprintf(buf + len, "N: Name=\"%s\"\n", dev->name ? dev->name : "");
627 len += sprintf(buf + len, "P: Phys=%s\n", dev->phys ? dev->phys : "");
628 len += sprintf(buf + len, "H: Handlers=");
629
630 list_for_each_entry(handle, &dev->h_list, d_node)
631 len += sprintf(buf + len, "%s ", handle->name);
632
633 len += sprintf(buf + len, "\n");
634
635 SPRINTF_BIT_B(evbit, "EV=", EV_MAX);
636 SPRINTF_BIT_B2(keybit, "KEY=", KEY_MAX, EV_KEY);
637 SPRINTF_BIT_B2(relbit, "REL=", REL_MAX, EV_REL);
638 SPRINTF_BIT_B2(absbit, "ABS=", ABS_MAX, EV_ABS);
639 SPRINTF_BIT_B2(mscbit, "MSC=", MSC_MAX, EV_MSC);
640 SPRINTF_BIT_B2(ledbit, "LED=", LED_MAX, EV_LED);
641 SPRINTF_BIT_B2(sndbit, "SND=", SND_MAX, EV_SND);
642 SPRINTF_BIT_B2(ffbit, "FF=", FF_MAX, EV_FF);
643
644 len += sprintf(buf + len, "\n");
645
646 at += len;
647 744
648 if (at >= pos) { 745 input_class = class_create(THIS_MODULE, "input");
649 if (!*start) { 746 if (IS_ERR(input_class)) {
650 *start = buf + (pos - (at - len)); 747 printk(KERN_ERR "input: unable to register input class\n");
651 cnt = at - pos; 748 return PTR_ERR(input_class);
652 } else cnt += len;
653 buf += len;
654 if (cnt >= count)
655 break;
656 }
657 } 749 }
658 750
659 if (&dev->node == &input_dev_list) 751 err = input_proc_init();
660 *eof = 1; 752 if (err)
661 753 goto fail1;
662 return (count > cnt) ? cnt : count;
663}
664
665static int input_handlers_read(char *buf, char **start, off_t pos, int count, int *eof, void *data)
666{
667 struct input_handler *handler;
668
669 off_t at = 0;
670 int len = 0, cnt = 0;
671 int i = 0;
672
673 list_for_each_entry(handler, &input_handler_list, node) {
674
675 if (handler->fops)
676 len = sprintf(buf, "N: Number=%d Name=%s Minor=%d\n",
677 i++, handler->name, handler->minor);
678 else
679 len = sprintf(buf, "N: Number=%d Name=%s\n",
680 i++, handler->name);
681
682 at += len;
683 754
684 if (at >= pos) { 755 err = register_chrdev(INPUT_MAJOR, "input", &input_fops);
685 if (!*start) { 756 if (err) {
686 *start = buf + (pos - (at - len)); 757 printk(KERN_ERR "input: unable to register char major %d", INPUT_MAJOR);
687 cnt = at - pos; 758 goto fail2;
688 } else cnt += len;
689 buf += len;
690 if (cnt >= count)
691 break;
692 }
693 } 759 }
694 if (&handler->node == &input_handler_list)
695 *eof = 1;
696
697 return (count > cnt) ? cnt : count;
698}
699
700static struct file_operations input_fileops;
701 760
702static int __init input_proc_init(void) 761 err = devfs_mk_dir("input");
703{ 762 if (err)
704 struct proc_dir_entry *entry; 763 goto fail3;
705 764
706 proc_bus_input_dir = proc_mkdir("input", proc_bus);
707 if (proc_bus_input_dir == NULL)
708 return -ENOMEM;
709 proc_bus_input_dir->owner = THIS_MODULE;
710 entry = create_proc_read_entry("devices", 0, proc_bus_input_dir, input_devices_read, NULL);
711 if (entry == NULL) {
712 remove_proc_entry("input", proc_bus);
713 return -ENOMEM;
714 }
715 entry->owner = THIS_MODULE;
716 input_fileops = *entry->proc_fops;
717 entry->proc_fops = &input_fileops;
718 entry->proc_fops->poll = input_devices_poll;
719 entry = create_proc_read_entry("handlers", 0, proc_bus_input_dir, input_handlers_read, NULL);
720 if (entry == NULL) {
721 remove_proc_entry("devices", proc_bus_input_dir);
722 remove_proc_entry("input", proc_bus);
723 return -ENOMEM;
724 }
725 entry->owner = THIS_MODULE;
726 return 0; 765 return 0;
727}
728#else /* !CONFIG_PROC_FS */
729static inline int input_proc_init(void) { return 0; }
730#endif
731 766
732struct class *input_class; 767 fail3: unregister_chrdev(INPUT_MAJOR, "input");
733 768 fail2: input_proc_exit();
734static int __init input_init(void) 769 fail1: class_destroy(input_class);
735{ 770 return err;
736 int retval = -ENOMEM;
737
738 input_class = class_create(THIS_MODULE, "input");
739 if (IS_ERR(input_class))
740 return PTR_ERR(input_class);
741 input_proc_init();
742 retval = register_chrdev(INPUT_MAJOR, "input", &input_fops);
743 if (retval) {
744 printk(KERN_ERR "input: unable to register char major %d", INPUT_MAJOR);
745 remove_proc_entry("devices", proc_bus_input_dir);
746 remove_proc_entry("handlers", proc_bus_input_dir);
747 remove_proc_entry("input", proc_bus);
748 class_destroy(input_class);
749 return retval;
750 }
751
752 retval = devfs_mk_dir("input");
753 if (retval) {
754 remove_proc_entry("devices", proc_bus_input_dir);
755 remove_proc_entry("handlers", proc_bus_input_dir);
756 remove_proc_entry("input", proc_bus);
757 unregister_chrdev(INPUT_MAJOR, "input");
758 class_destroy(input_class);
759 }
760 return retval;
761} 771}
762 772
763static void __exit input_exit(void) 773static void __exit input_exit(void)
764{ 774{
765 remove_proc_entry("devices", proc_bus_input_dir); 775 input_proc_exit();
766 remove_proc_entry("handlers", proc_bus_input_dir);
767 remove_proc_entry("input", proc_bus);
768
769 devfs_remove("input"); 776 devfs_remove("input");
770 unregister_chrdev(INPUT_MAJOR, "input"); 777 unregister_chrdev(INPUT_MAJOR, "input");
771 class_destroy(input_class); 778 class_destroy(input_class);