2 * Input driver to ExplorerPS/2 device driver module.
4 * Copyright (c) 1999-2002 Vojtech Pavlik
5 * Copyright (c) 2004 Dmitry Torokhov
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as published by
9 * the Free Software Foundation.
12 #define MOUSEDEV_MINOR_BASE 32
13 #define MOUSEDEV_MINORS 32
14 #define MOUSEDEV_MIX 31
16 #include <linux/slab.h>
17 #include <linux/poll.h>
18 #include <linux/module.h>
19 #include <linux/init.h>
20 #include <linux/input.h>
21 #include <linux/random.h>
22 #include <linux/major.h>
23 #include <linux/device.h>
24 #ifdef CONFIG_INPUT_MOUSEDEV_PSAUX
25 #include <linux/miscdevice.h>
28 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
29 MODULE_DESCRIPTION("Mouse (ExplorerPS/2) device interfaces");
30 MODULE_LICENSE("GPL");
32 #ifndef CONFIG_INPUT_MOUSEDEV_SCREEN_X
33 #define CONFIG_INPUT_MOUSEDEV_SCREEN_X 1024
35 #ifndef CONFIG_INPUT_MOUSEDEV_SCREEN_Y
36 #define CONFIG_INPUT_MOUSEDEV_SCREEN_Y 768
39 static int xres = CONFIG_INPUT_MOUSEDEV_SCREEN_X;
40 module_param(xres, uint, 0644);
41 MODULE_PARM_DESC(xres, "Horizontal screen resolution");
43 static int yres = CONFIG_INPUT_MOUSEDEV_SCREEN_Y;
44 module_param(yres, uint, 0644);
45 MODULE_PARM_DESC(yres, "Vertical screen resolution");
47 static unsigned tap_time = 200;
48 module_param(tap_time, uint, 0644);
49 MODULE_PARM_DESC(tap_time, "Tap time for touchpads in absolute mode (msecs)");
51 struct mousedev_hw_data {
55 unsigned long buttons;
63 struct input_handle handle;
64 wait_queue_head_t wait;
65 struct list_head client_list;
66 spinlock_t client_lock; /* protects client_list */
70 struct list_head mixdev_node;
73 struct mousedev_hw_data packet;
74 unsigned int pkt_count;
75 int old_x[4], old_y[4];
86 struct mousedev_motion {
88 unsigned long buttons;
91 #define PACKET_QUEUE_LEN 16
92 struct mousedev_client {
93 struct fasync_struct *fasync;
94 struct mousedev *mousedev;
95 struct list_head node;
97 struct mousedev_motion packets[PACKET_QUEUE_LEN];
98 unsigned int head, tail;
99 spinlock_t packet_lock;
103 unsigned char ready, buffer, bufsiz;
104 unsigned char imexseq, impsseq;
105 enum mousedev_emul mode;
106 unsigned long last_buttons;
109 #define MOUSEDEV_SEQ_LEN 6
111 static unsigned char mousedev_imps_seq[] = { 0xf3, 200, 0xf3, 100, 0xf3, 80 };
112 static unsigned char mousedev_imex_seq[] = { 0xf3, 200, 0xf3, 200, 0xf3, 80 };
114 static struct input_handler mousedev_handler;
116 static struct mousedev *mousedev_table[MOUSEDEV_MINORS];
117 static DEFINE_MUTEX(mousedev_table_mutex);
118 static struct mousedev *mousedev_mix;
119 static LIST_HEAD(mousedev_mix_list);
121 static void mixdev_open_devices(void);
122 static void mixdev_close_devices(void);
124 #define fx(i) (mousedev->old_x[(mousedev->pkt_count - (i)) & 03])
125 #define fy(i) (mousedev->old_y[(mousedev->pkt_count - (i)) & 03])
127 static void mousedev_touchpad_event(struct input_dev *dev,
128 struct mousedev *mousedev,
129 unsigned int code, int value)
132 enum { FRACTION_DENOM = 128 };
138 if (mousedev->touch && mousedev->pkt_count >= 2) {
139 size = dev->absmax[ABS_X] - dev->absmin[ABS_X];
142 tmp = ((value - fx(2)) * 256 * FRACTION_DENOM) / size;
143 tmp += mousedev->frac_dx;
144 mousedev->packet.dx = tmp / FRACTION_DENOM;
146 tmp - mousedev->packet.dx * FRACTION_DENOM;
152 if (mousedev->touch && mousedev->pkt_count >= 2) {
153 /* use X size to keep the same scale */
154 size = dev->absmax[ABS_X] - dev->absmin[ABS_X];
157 tmp = -((value - fy(2)) * 256 * FRACTION_DENOM) / size;
158 tmp += mousedev->frac_dy;
159 mousedev->packet.dy = tmp / FRACTION_DENOM;
160 mousedev->frac_dy = tmp -
161 mousedev->packet.dy * FRACTION_DENOM;
167 static void mousedev_abs_event(struct input_dev *dev, struct mousedev *mousedev,
168 unsigned int code, int value)
175 size = dev->absmax[ABS_X] - dev->absmin[ABS_X];
178 if (value > dev->absmax[ABS_X])
179 value = dev->absmax[ABS_X];
180 if (value < dev->absmin[ABS_X])
181 value = dev->absmin[ABS_X];
183 ((value - dev->absmin[ABS_X]) * xres) / size;
184 mousedev->packet.abs_event = 1;
188 size = dev->absmax[ABS_Y] - dev->absmin[ABS_Y];
191 if (value > dev->absmax[ABS_Y])
192 value = dev->absmax[ABS_Y];
193 if (value < dev->absmin[ABS_Y])
194 value = dev->absmin[ABS_Y];
195 mousedev->packet.y = yres -
196 ((value - dev->absmin[ABS_Y]) * yres) / size;
197 mousedev->packet.abs_event = 1;
202 static void mousedev_rel_event(struct mousedev *mousedev,
203 unsigned int code, int value)
207 mousedev->packet.dx += value;
211 mousedev->packet.dy -= value;
215 mousedev->packet.dz -= value;
220 static void mousedev_key_event(struct mousedev *mousedev,
221 unsigned int code, int value)
229 case BTN_LEFT: index = 0; break;
233 case BTN_RIGHT: index = 1; break;
238 case BTN_MIDDLE: index = 2; break;
242 case BTN_SIDE: index = 3; break;
245 case BTN_EXTRA: index = 4; break;
251 set_bit(index, &mousedev->packet.buttons);
252 set_bit(index, &mousedev_mix->packet.buttons);
254 clear_bit(index, &mousedev->packet.buttons);
255 clear_bit(index, &mousedev_mix->packet.buttons);
259 static void mousedev_notify_readers(struct mousedev *mousedev,
260 struct mousedev_hw_data *packet)
262 struct mousedev_client *client;
263 struct mousedev_motion *p;
264 unsigned int new_head;
265 int wake_readers = 0;
268 list_for_each_entry_rcu(client, &mousedev->client_list, node) {
270 /* Just acquire the lock, interrupts already disabled */
271 spin_lock(&client->packet_lock);
273 p = &client->packets[client->head];
274 if (client->ready && p->buttons != mousedev->packet.buttons) {
275 new_head = (client->head + 1) % PACKET_QUEUE_LEN;
276 if (new_head != client->tail) {
277 p = &client->packets[client->head = new_head];
278 memset(p, 0, sizeof(struct mousedev_motion));
282 if (packet->abs_event) {
283 p->dx += packet->x - client->pos_x;
284 p->dy += packet->y - client->pos_y;
285 client->pos_x = packet->x;
286 client->pos_y = packet->y;
289 client->pos_x += packet->dx;
290 client->pos_x = client->pos_x < 0 ?
291 0 : (client->pos_x >= xres ? xres : client->pos_x);
292 client->pos_y += packet->dy;
293 client->pos_y = client->pos_y < 0 ?
294 0 : (client->pos_y >= yres ? yres : client->pos_y);
299 p->buttons = mousedev->packet.buttons;
301 if (p->dx || p->dy || p->dz ||
302 p->buttons != client->last_buttons)
305 spin_unlock(&client->packet_lock);
308 kill_fasync(&client->fasync, SIGIO, POLL_IN);
315 wake_up_interruptible(&mousedev->wait);
318 static void mousedev_touchpad_touch(struct mousedev *mousedev, int value)
321 if (mousedev->touch &&
323 mousedev->touch + msecs_to_jiffies(tap_time))) {
325 * Toggle left button to emulate tap.
326 * We rely on the fact that mousedev_mix always has 0
327 * motion packet so we won't mess current position.
329 set_bit(0, &mousedev->packet.buttons);
330 set_bit(0, &mousedev_mix->packet.buttons);
331 mousedev_notify_readers(mousedev, &mousedev_mix->packet);
332 mousedev_notify_readers(mousedev_mix,
333 &mousedev_mix->packet);
334 clear_bit(0, &mousedev->packet.buttons);
335 clear_bit(0, &mousedev_mix->packet.buttons);
337 mousedev->touch = mousedev->pkt_count = 0;
338 mousedev->frac_dx = 0;
339 mousedev->frac_dy = 0;
341 } else if (!mousedev->touch)
342 mousedev->touch = jiffies;
345 static void mousedev_event(struct input_handle *handle,
346 unsigned int type, unsigned int code, int value)
348 struct mousedev *mousedev = handle->private;
353 /* Ignore joysticks */
354 if (test_bit(BTN_TRIGGER, handle->dev->keybit))
357 if (test_bit(BTN_TOOL_FINGER, handle->dev->keybit))
358 mousedev_touchpad_event(handle->dev,
359 mousedev, code, value);
361 mousedev_abs_event(handle->dev, mousedev, code, value);
366 mousedev_rel_event(mousedev, code, value);
371 if (code == BTN_TOUCH &&
372 test_bit(BTN_TOOL_FINGER, handle->dev->keybit))
373 mousedev_touchpad_touch(mousedev, value);
375 mousedev_key_event(mousedev, code, value);
380 if (code == SYN_REPORT) {
381 if (mousedev->touch) {
382 mousedev->pkt_count++;
384 * Input system eats duplicate events,
385 * but we need all of them to do correct
386 * averaging so apply present one forward
392 mousedev_notify_readers(mousedev, &mousedev->packet);
393 mousedev_notify_readers(mousedev_mix, &mousedev->packet);
395 mousedev->packet.dx = mousedev->packet.dy =
396 mousedev->packet.dz = 0;
397 mousedev->packet.abs_event = 0;
403 static int mousedev_fasync(int fd, struct file *file, int on)
406 struct mousedev_client *client = file->private_data;
408 retval = fasync_helper(fd, file, on, &client->fasync);
410 return retval < 0 ? retval : 0;
413 static void mousedev_free(struct device *dev)
415 struct mousedev *mousedev = container_of(dev, struct mousedev, dev);
420 static int mousedev_open_device(struct mousedev *mousedev)
424 retval = mutex_lock_interruptible(&mousedev->mutex);
428 if (mousedev->minor == MOUSEDEV_MIX)
429 mixdev_open_devices();
430 else if (!mousedev->exist)
432 else if (!mousedev->open++) {
433 retval = input_open_device(&mousedev->handle);
438 mutex_unlock(&mousedev->mutex);
442 static void mousedev_close_device(struct mousedev *mousedev)
444 mutex_lock(&mousedev->mutex);
446 if (mousedev->minor == MOUSEDEV_MIX)
447 mixdev_close_devices();
448 else if (mousedev->exist && !--mousedev->open)
449 input_close_device(&mousedev->handle);
451 mutex_unlock(&mousedev->mutex);
455 * Open all available devices so they can all be multiplexed in one.
456 * stream. Note that this function is called with mousedev_mix->mutex
459 static void mixdev_open_devices(void)
461 struct mousedev *mousedev;
463 if (mousedev_mix->open++)
466 list_for_each_entry(mousedev, &mousedev_mix_list, mixdev_node) {
467 if (!mousedev->mixdev_open) {
468 if (mousedev_open_device(mousedev))
471 mousedev->mixdev_open = 1;
477 * Close all devices that were opened as part of multiplexed
478 * device. Note that this function is called with mousedev_mix->mutex
481 static void mixdev_close_devices(void)
483 struct mousedev *mousedev;
485 if (--mousedev_mix->open)
488 list_for_each_entry(mousedev, &mousedev_mix_list, mixdev_node) {
489 if (mousedev->mixdev_open) {
490 mousedev->mixdev_open = 0;
491 mousedev_close_device(mousedev);
497 static void mousedev_attach_client(struct mousedev *mousedev,
498 struct mousedev_client *client)
500 spin_lock(&mousedev->client_lock);
501 list_add_tail_rcu(&client->node, &mousedev->client_list);
502 spin_unlock(&mousedev->client_lock);
506 static void mousedev_detach_client(struct mousedev *mousedev,
507 struct mousedev_client *client)
509 spin_lock(&mousedev->client_lock);
510 list_del_rcu(&client->node);
511 spin_unlock(&mousedev->client_lock);
515 static int mousedev_release(struct inode *inode, struct file *file)
517 struct mousedev_client *client = file->private_data;
518 struct mousedev *mousedev = client->mousedev;
520 mousedev_fasync(-1, file, 0);
521 mousedev_detach_client(mousedev, client);
524 mousedev_close_device(mousedev);
525 put_device(&mousedev->dev);
530 static int mousedev_open(struct inode *inode, struct file *file)
532 struct mousedev_client *client;
533 struct mousedev *mousedev;
537 #ifdef CONFIG_INPUT_MOUSEDEV_PSAUX
538 if (imajor(inode) == MISC_MAJOR)
542 i = iminor(inode) - MOUSEDEV_MINOR_BASE;
544 if (i >= MOUSEDEV_MINORS)
547 error = mutex_lock_interruptible(&mousedev_table_mutex);
550 mousedev = mousedev_table[i];
552 get_device(&mousedev->dev);
553 mutex_unlock(&mousedev_table_mutex);
558 client = kzalloc(sizeof(struct mousedev_client), GFP_KERNEL);
561 goto err_put_mousedev;
564 spin_lock_init(&client->packet_lock);
565 client->pos_x = xres / 2;
566 client->pos_y = yres / 2;
567 client->mousedev = mousedev;
568 mousedev_attach_client(mousedev, client);
570 error = mousedev_open_device(mousedev);
572 goto err_free_client;
574 file->private_data = client;
578 mousedev_detach_client(mousedev, client);
581 put_device(&mousedev->dev);
585 static inline int mousedev_limit_delta(int delta, int limit)
587 return delta > limit ? limit : (delta < -limit ? -limit : delta);
590 static void mousedev_packet(struct mousedev_client *client,
591 signed char *ps2_data)
593 struct mousedev_motion *p = &client->packets[client->tail];
596 ((p->dx < 0) << 4) | ((p->dy < 0) << 5) | (p->buttons & 0x07);
597 ps2_data[1] = mousedev_limit_delta(p->dx, 127);
598 ps2_data[2] = mousedev_limit_delta(p->dy, 127);
599 p->dx -= ps2_data[1];
600 p->dy -= ps2_data[2];
602 switch (client->mode) {
603 case MOUSEDEV_EMUL_EXPS:
604 ps2_data[3] = mousedev_limit_delta(p->dz, 7);
605 p->dz -= ps2_data[3];
606 ps2_data[3] = (ps2_data[3] & 0x0f) | ((p->buttons & 0x18) << 1);
610 case MOUSEDEV_EMUL_IMPS:
612 ((p->buttons & 0x10) >> 3) | ((p->buttons & 0x08) >> 1);
613 ps2_data[3] = mousedev_limit_delta(p->dz, 127);
614 p->dz -= ps2_data[3];
618 case MOUSEDEV_EMUL_PS2:
621 ((p->buttons & 0x10) >> 3) | ((p->buttons & 0x08) >> 1);
627 if (!p->dx && !p->dy && !p->dz) {
628 if (client->tail == client->head) {
630 client->last_buttons = p->buttons;
632 client->tail = (client->tail + 1) % PACKET_QUEUE_LEN;
636 static void mousedev_generate_response(struct mousedev_client *client,
639 client->ps2[0] = 0xfa; /* ACK */
643 case 0xeb: /* Poll */
644 mousedev_packet(client, &client->ps2[1]);
645 client->bufsiz++; /* account for leading ACK */
648 case 0xf2: /* Get ID */
649 switch (client->mode) {
650 case MOUSEDEV_EMUL_PS2:
653 case MOUSEDEV_EMUL_IMPS:
656 case MOUSEDEV_EMUL_EXPS:
663 case 0xe9: /* Get info */
664 client->ps2[1] = 0x60; client->ps2[2] = 3; client->ps2[3] = 200;
668 case 0xff: /* Reset */
669 client->impsseq = client->imexseq = 0;
670 client->mode = MOUSEDEV_EMUL_PS2;
671 client->ps2[1] = 0xaa; client->ps2[2] = 0x00;
679 client->buffer = client->bufsiz;
682 static ssize_t mousedev_write(struct file *file, const char __user *buffer,
683 size_t count, loff_t *ppos)
685 struct mousedev_client *client = file->private_data;
689 for (i = 0; i < count; i++) {
691 if (get_user(c, buffer + i))
694 spin_lock_irq(&client->packet_lock);
696 if (c == mousedev_imex_seq[client->imexseq]) {
697 if (++client->imexseq == MOUSEDEV_SEQ_LEN) {
699 client->mode = MOUSEDEV_EMUL_EXPS;
704 if (c == mousedev_imps_seq[client->impsseq]) {
705 if (++client->impsseq == MOUSEDEV_SEQ_LEN) {
707 client->mode = MOUSEDEV_EMUL_IMPS;
712 mousedev_generate_response(client, c);
714 spin_unlock_irq(&client->packet_lock);
717 kill_fasync(&client->fasync, SIGIO, POLL_IN);
718 wake_up_interruptible(&client->mousedev->wait);
723 static ssize_t mousedev_read(struct file *file, char __user *buffer,
724 size_t count, loff_t *ppos)
726 struct mousedev_client *client = file->private_data;
727 struct mousedev *mousedev = client->mousedev;
728 signed char data[sizeof(client->ps2)];
731 if (!client->ready && !client->buffer && mousedev->exist &&
732 (file->f_flags & O_NONBLOCK))
735 retval = wait_event_interruptible(mousedev->wait,
736 !mousedev->exist || client->ready || client->buffer);
740 if (!mousedev->exist)
743 spin_lock_irq(&client->packet_lock);
745 if (!client->buffer && client->ready) {
746 mousedev_packet(client, client->ps2);
747 client->buffer = client->bufsiz;
750 if (count > client->buffer)
751 count = client->buffer;
753 memcpy(data, client->ps2 + client->bufsiz - client->buffer, count);
754 client->buffer -= count;
756 spin_unlock_irq(&client->packet_lock);
758 if (copy_to_user(buffer, data, count))
764 /* No kernel lock - fine */
765 static unsigned int mousedev_poll(struct file *file, poll_table *wait)
767 struct mousedev_client *client = file->private_data;
768 struct mousedev *mousedev = client->mousedev;
770 poll_wait(file, &mousedev->wait, wait);
771 return ((client->ready || client->buffer) ? (POLLIN | POLLRDNORM) : 0) |
772 (mousedev->exist ? 0 : (POLLHUP | POLLERR));
775 static const struct file_operations mousedev_fops = {
776 .owner = THIS_MODULE,
777 .read = mousedev_read,
778 .write = mousedev_write,
779 .poll = mousedev_poll,
780 .open = mousedev_open,
781 .release = mousedev_release,
782 .fasync = mousedev_fasync,
785 static int mousedev_install_chrdev(struct mousedev *mousedev)
787 mousedev_table[mousedev->minor] = mousedev;
791 static void mousedev_remove_chrdev(struct mousedev *mousedev)
793 mutex_lock(&mousedev_table_mutex);
794 mousedev_table[mousedev->minor] = NULL;
795 mutex_unlock(&mousedev_table_mutex);
799 * Mark device non-existent. This disables writes, ioctls and
800 * prevents new users from opening the device. Already posted
801 * blocking reads will stay, however new ones will fail.
803 static void mousedev_mark_dead(struct mousedev *mousedev)
805 mutex_lock(&mousedev->mutex);
807 mutex_unlock(&mousedev->mutex);
811 * Wake up users waiting for IO so they can disconnect from
814 static void mousedev_hangup(struct mousedev *mousedev)
816 struct mousedev_client *client;
818 spin_lock(&mousedev->client_lock);
819 list_for_each_entry(client, &mousedev->client_list, node)
820 kill_fasync(&client->fasync, SIGIO, POLL_HUP);
821 spin_unlock(&mousedev->client_lock);
823 wake_up_interruptible(&mousedev->wait);
826 static void mousedev_cleanup(struct mousedev *mousedev)
828 struct input_handle *handle = &mousedev->handle;
830 mousedev_mark_dead(mousedev);
831 mousedev_hangup(mousedev);
832 mousedev_remove_chrdev(mousedev);
834 /* mousedev is marked dead so no one else accesses mousedev->open */
836 input_close_device(handle);
839 static struct mousedev *mousedev_create(struct input_dev *dev,
840 struct input_handler *handler,
843 struct mousedev *mousedev;
846 mousedev = kzalloc(sizeof(struct mousedev), GFP_KERNEL);
852 INIT_LIST_HEAD(&mousedev->client_list);
853 INIT_LIST_HEAD(&mousedev->mixdev_node);
854 spin_lock_init(&mousedev->client_lock);
855 mutex_init(&mousedev->mutex);
856 lockdep_set_subclass(&mousedev->mutex,
857 minor == MOUSEDEV_MIX ? MOUSEDEV_MIX : 0);
858 init_waitqueue_head(&mousedev->wait);
860 if (minor == MOUSEDEV_MIX)
861 strlcpy(mousedev->name, "mice", sizeof(mousedev->name));
863 snprintf(mousedev->name, sizeof(mousedev->name),
866 mousedev->minor = minor;
868 mousedev->handle.dev = dev;
869 mousedev->handle.name = mousedev->name;
870 mousedev->handle.handler = handler;
871 mousedev->handle.private = mousedev;
873 strlcpy(mousedev->dev.bus_id, mousedev->name,
874 sizeof(mousedev->dev.bus_id));
875 mousedev->dev.class = &input_class;
877 mousedev->dev.parent = &dev->dev;
878 mousedev->dev.devt = MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + minor);
879 mousedev->dev.release = mousedev_free;
880 device_initialize(&mousedev->dev);
882 if (minor != MOUSEDEV_MIX) {
883 error = input_register_handle(&mousedev->handle);
885 goto err_free_mousedev;
888 error = mousedev_install_chrdev(mousedev);
890 goto err_unregister_handle;
892 error = device_add(&mousedev->dev);
894 goto err_cleanup_mousedev;
898 err_cleanup_mousedev:
899 mousedev_cleanup(mousedev);
900 err_unregister_handle:
901 if (minor != MOUSEDEV_MIX)
902 input_unregister_handle(&mousedev->handle);
904 put_device(&mousedev->dev);
906 return ERR_PTR(error);
909 static void mousedev_destroy(struct mousedev *mousedev)
911 device_del(&mousedev->dev);
912 mousedev_cleanup(mousedev);
913 if (mousedev->minor != MOUSEDEV_MIX)
914 input_unregister_handle(&mousedev->handle);
915 put_device(&mousedev->dev);
918 static int mixdev_add_device(struct mousedev *mousedev)
922 retval = mutex_lock_interruptible(&mousedev_mix->mutex);
926 if (mousedev_mix->open) {
927 retval = mousedev_open_device(mousedev);
931 mousedev->mixdev_open = 1;
934 get_device(&mousedev->dev);
935 list_add_tail(&mousedev->mixdev_node, &mousedev_mix_list);
938 mutex_unlock(&mousedev_mix->mutex);
942 static void mixdev_remove_device(struct mousedev *mousedev)
944 mutex_lock(&mousedev_mix->mutex);
946 if (mousedev->mixdev_open) {
947 mousedev->mixdev_open = 0;
948 mousedev_close_device(mousedev);
951 list_del_init(&mousedev->mixdev_node);
952 mutex_unlock(&mousedev_mix->mutex);
954 put_device(&mousedev->dev);
957 static int mousedev_connect(struct input_handler *handler,
958 struct input_dev *dev,
959 const struct input_device_id *id)
961 struct mousedev *mousedev;
965 for (minor = 0; minor < MOUSEDEV_MINORS; minor++)
966 if (!mousedev_table[minor])
969 if (minor == MOUSEDEV_MINORS) {
970 printk(KERN_ERR "mousedev: no more free mousedev devices\n");
974 mousedev = mousedev_create(dev, handler, minor);
975 if (IS_ERR(mousedev))
976 return PTR_ERR(mousedev);
978 error = mixdev_add_device(mousedev);
980 mousedev_destroy(mousedev);
987 static void mousedev_disconnect(struct input_handle *handle)
989 struct mousedev *mousedev = handle->private;
991 mixdev_remove_device(mousedev);
992 mousedev_destroy(mousedev);
995 static const struct input_device_id mousedev_ids[] = {
997 .flags = INPUT_DEVICE_ID_MATCH_EVBIT |
998 INPUT_DEVICE_ID_MATCH_KEYBIT |
999 INPUT_DEVICE_ID_MATCH_RELBIT,
1000 .evbit = { BIT_MASK(EV_KEY) | BIT_MASK(EV_REL) },
1001 .keybit = { [BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) },
1002 .relbit = { BIT_MASK(REL_X) | BIT_MASK(REL_Y) },
1003 }, /* A mouse like device, at least one button,
1004 two relative axes */
1006 .flags = INPUT_DEVICE_ID_MATCH_EVBIT |
1007 INPUT_DEVICE_ID_MATCH_RELBIT,
1008 .evbit = { BIT_MASK(EV_KEY) | BIT_MASK(EV_REL) },
1009 .relbit = { BIT_MASK(REL_WHEEL) },
1010 }, /* A separate scrollwheel */
1012 .flags = INPUT_DEVICE_ID_MATCH_EVBIT |
1013 INPUT_DEVICE_ID_MATCH_KEYBIT |
1014 INPUT_DEVICE_ID_MATCH_ABSBIT,
1015 .evbit = { BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS) },
1016 .keybit = { [BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH) },
1017 .absbit = { BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) },
1018 }, /* A tablet like device, at least touch detection,
1019 two absolute axes */
1021 .flags = INPUT_DEVICE_ID_MATCH_EVBIT |
1022 INPUT_DEVICE_ID_MATCH_KEYBIT |
1023 INPUT_DEVICE_ID_MATCH_ABSBIT,
1024 .evbit = { BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS) },
1025 .keybit = { [BIT_WORD(BTN_TOOL_FINGER)] =
1026 BIT_MASK(BTN_TOOL_FINGER) },
1027 .absbit = { BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) |
1028 BIT_MASK(ABS_PRESSURE) |
1029 BIT_MASK(ABS_TOOL_WIDTH) },
1032 .flags = INPUT_DEVICE_ID_MATCH_EVBIT |
1033 INPUT_DEVICE_ID_MATCH_KEYBIT |
1034 INPUT_DEVICE_ID_MATCH_ABSBIT,
1035 .evbit = { BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS) },
1036 .keybit = { [BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) },
1037 .absbit = { BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) },
1038 }, /* Mouse-like device with absolute X and Y but ordinary
1039 clicks, like hp ILO2 High Performance mouse */
1041 { }, /* Terminating entry */
1044 MODULE_DEVICE_TABLE(input, mousedev_ids);
1046 static struct input_handler mousedev_handler = {
1047 .event = mousedev_event,
1048 .connect = mousedev_connect,
1049 .disconnect = mousedev_disconnect,
1050 .fops = &mousedev_fops,
1051 .minor = MOUSEDEV_MINOR_BASE,
1053 .id_table = mousedev_ids,
1056 #ifdef CONFIG_INPUT_MOUSEDEV_PSAUX
1057 static struct miscdevice psaux_mouse = {
1058 PSMOUSE_MINOR, "psaux", &mousedev_fops
1060 static int psaux_registered;
1063 static int __init mousedev_init(void)
1067 mousedev_mix = mousedev_create(NULL, &mousedev_handler, MOUSEDEV_MIX);
1068 if (IS_ERR(mousedev_mix))
1069 return PTR_ERR(mousedev_mix);
1071 error = input_register_handler(&mousedev_handler);
1073 mousedev_destroy(mousedev_mix);
1077 #ifdef CONFIG_INPUT_MOUSEDEV_PSAUX
1078 error = misc_register(&psaux_mouse);
1080 printk(KERN_WARNING "mice: could not register psaux device, "
1081 "error: %d\n", error);
1083 psaux_registered = 1;
1086 printk(KERN_INFO "mice: PS/2 mouse device common for all mice\n");
1091 static void __exit mousedev_exit(void)
1093 #ifdef CONFIG_INPUT_MOUSEDEV_PSAUX
1094 if (psaux_registered)
1095 misc_deregister(&psaux_mouse);
1097 input_unregister_handler(&mousedev_handler);
1098 mousedev_destroy(mousedev_mix);
1101 module_init(mousedev_init);
1102 module_exit(mousedev_exit);