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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 494 | giacomo | 1 | /* |
| 2 | * Joystick device driver for the input driver suite. |
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| 3 | * |
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| 4 | * Copyright (c) 1999-2002 Vojtech Pavlik |
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| 5 | * Copyright (c) 1999 Colin Van Dyke |
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| 6 | * |
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| 7 | * This program is free software; you can redistribute it and/or modify |
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| 8 | * it under the terms of the GNU General Public License as published by |
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| 9 | * the Free Software Foundation; either version 2 of the License, or |
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| 10 | * (at your option) any later version. |
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| 11 | */ |
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| 12 | |||
| 13 | #include <linuxcomp.h> |
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| 14 | |||
| 15 | #include <asm/io.h> |
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| 16 | #include <asm/system.h> |
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| 17 | #include <linux/delay.h> |
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| 18 | #include <linux/errno.h> |
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| 19 | #include <linux/joystick.h> |
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| 20 | #include <linux/input.h> |
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| 21 | #include <linux/kernel.h> |
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| 22 | #include <linux/major.h> |
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| 23 | #include <linux/slab.h> |
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| 24 | #include <linux/mm.h> |
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| 25 | #include <linux/miscdevice.h> |
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| 26 | #include <linux/module.h> |
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| 27 | #include <linux/poll.h> |
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| 28 | #include <linux/init.h> |
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| 29 | #include <linux/smp_lock.h> |
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| 30 | #include <linux/device.h> |
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| 31 | #include <linux/devfs_fs_kernel.h> |
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| 32 | |||
| 33 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); |
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| 34 | MODULE_DESCRIPTION("Joystick device interfaces"); |
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| 35 | MODULE_SUPPORTED_DEVICE("input/js"); |
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| 36 | MODULE_LICENSE("GPL"); |
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| 37 | |||
| 38 | #define JOYDEV_MINOR_BASE 0 |
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| 39 | #define JOYDEV_MINORS 16 |
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| 40 | #define JOYDEV_BUFFER_SIZE 64 |
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| 41 | |||
| 42 | #define MSECS(t) (1000 * ((t) / HZ) + 1000 * ((t) % HZ) / HZ) |
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| 43 | |||
| 44 | struct joydev { |
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| 45 | int exist; |
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| 46 | int open; |
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| 47 | int minor; |
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| 48 | char name[16]; |
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| 49 | struct input_handle handle; |
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| 50 | wait_queue_head_t wait; |
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| 51 | struct list_head list; |
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| 52 | struct js_corr corr[ABS_MAX]; |
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| 53 | struct JS_DATA_SAVE_TYPE glue; |
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| 54 | int nabs; |
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| 55 | int nkey; |
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| 56 | __u16 keymap[KEY_MAX - BTN_MISC]; |
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| 57 | __u16 keypam[KEY_MAX - BTN_MISC]; |
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| 58 | __u8 absmap[ABS_MAX]; |
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| 59 | __u8 abspam[ABS_MAX]; |
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| 60 | __s16 abs[ABS_MAX]; |
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| 61 | }; |
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| 62 | |||
| 63 | struct joydev_list { |
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| 64 | struct js_event buffer[JOYDEV_BUFFER_SIZE]; |
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| 65 | int head; |
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| 66 | int tail; |
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| 67 | int startup; |
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| 68 | struct fasync_struct *fasync; |
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| 69 | struct joydev *joydev; |
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| 70 | struct list_head node; |
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| 71 | }; |
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| 72 | |||
| 73 | static struct joydev *joydev_table[JOYDEV_MINORS]; |
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| 74 | |||
| 75 | static int joydev_correct(int value, struct js_corr *corr) |
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| 76 | { |
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| 77 | switch (corr->type) { |
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| 78 | case JS_CORR_NONE: |
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| 79 | break; |
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| 80 | case JS_CORR_BROKEN: |
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| 81 | value = value > corr->coef[0] ? (value < corr->coef[1] ? 0 : |
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| 82 | ((corr->coef[3] * (value - corr->coef[1])) >> 14)) : |
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| 83 | ((corr->coef[2] * (value - corr->coef[0])) >> 14); |
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| 84 | break; |
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| 85 | default: |
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| 86 | return 0; |
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| 87 | } |
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| 88 | |||
| 89 | if (value < -32767) return -32767; |
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| 90 | if (value > 32767) return 32767; |
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| 91 | |||
| 92 | return value; |
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| 93 | } |
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| 94 | |||
| 95 | static void joydev_event(struct input_handle *handle, unsigned int type, unsigned int code, int value) |
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| 96 | { |
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| 97 | struct joydev *joydev = handle->private; |
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| 98 | struct joydev_list *list; |
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| 99 | struct js_event event; |
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| 100 | |||
| 101 | switch (type) { |
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| 102 | |||
| 103 | case EV_KEY: |
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| 104 | if (code < BTN_MISC || value == 2) return; |
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| 105 | event.type = JS_EVENT_BUTTON; |
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| 106 | event.number = joydev->keymap[code - BTN_MISC]; |
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| 107 | event.value = value; |
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| 108 | break; |
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| 109 | |||
| 110 | case EV_ABS: |
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| 111 | event.type = JS_EVENT_AXIS; |
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| 112 | event.number = joydev->absmap[code]; |
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| 113 | event.value = joydev_correct(value, joydev->corr + event.number); |
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| 114 | if (event.value == joydev->abs[event.number]) return; |
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| 115 | joydev->abs[event.number] = event.value; |
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| 116 | break; |
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| 117 | |||
| 118 | default: |
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| 119 | return; |
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| 120 | } |
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| 121 | |||
| 122 | event.time = MSECS(jiffies); |
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| 123 | |||
| 124 | list_for_each_entry(list, &joydev->list, node) { |
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| 125 | |||
| 126 | memcpy(list->buffer + list->head, &event, sizeof(struct js_event)); |
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| 127 | |||
| 128 | if (list->startup == joydev->nabs + joydev->nkey) |
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| 129 | if (list->tail == (list->head = (list->head + 1) & (JOYDEV_BUFFER_SIZE - 1))) |
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| 130 | list->startup = 0; |
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| 131 | |||
| 132 | kill_fasync(&list->fasync, SIGIO, POLL_IN); |
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| 133 | } |
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| 134 | |||
| 135 | wake_up_interruptible(&joydev->wait); |
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| 136 | } |
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| 137 | |||
| 138 | static int joydev_fasync(int fd, struct file *file, int on) |
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| 139 | { |
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| 140 | int retval; |
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| 141 | struct joydev_list *list = file->private_data; |
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| 142 | retval = fasync_helper(fd, file, on, &list->fasync); |
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| 143 | return retval < 0 ? retval : 0; |
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| 144 | } |
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| 145 | |||
| 146 | static void joydev_free(struct joydev *joydev) |
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| 147 | { |
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| 148 | devfs_remove("js%d", joydev->minor); |
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| 149 | joydev_table[joydev->minor] = NULL; |
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| 150 | kfree(joydev); |
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| 151 | } |
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| 152 | |||
| 153 | static int joydev_release(struct inode * inode, struct file * file) |
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| 154 | { |
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| 155 | struct joydev_list *list = file->private_data; |
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| 156 | |||
| 157 | joydev_fasync(-1, file, 0); |
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| 158 | |||
| 159 | list_del(&list->node); |
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| 160 | |||
| 161 | if (!--list->joydev->open) { |
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| 162 | if (list->joydev->exist) |
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| 163 | input_close_device(&list->joydev->handle); |
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| 164 | else |
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| 165 | joydev_free(list->joydev); |
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| 166 | } |
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| 167 | |||
| 168 | kfree(list); |
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| 169 | return 0; |
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| 170 | } |
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| 171 | |||
| 172 | static int joydev_open(struct inode *inode, struct file *file) |
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| 173 | { |
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| 174 | struct joydev_list *list; |
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| 175 | int i = iminor(inode) - JOYDEV_MINOR_BASE; |
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| 176 | |||
| 177 | if (i >= JOYDEV_MINORS || !joydev_table[i]) |
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| 178 | return -ENODEV; |
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| 179 | |||
| 180 | if (!(list = kmalloc(sizeof(struct joydev_list), GFP_KERNEL))) |
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| 181 | return -ENOMEM; |
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| 182 | memset(list, 0, sizeof(struct joydev_list)); |
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| 183 | |||
| 184 | list->joydev = joydev_table[i]; |
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| 185 | list_add_tail(&list->node, &joydev_table[i]->list); |
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| 186 | file->private_data = list; |
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| 187 | |||
| 188 | if (!list->joydev->open++) |
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| 189 | if (list->joydev->exist) |
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| 190 | input_open_device(&list->joydev->handle); |
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| 191 | |||
| 192 | return 0; |
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| 193 | } |
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| 194 | |||
| 195 | static ssize_t joydev_write(struct file * file, const char * buffer, size_t count, loff_t *ppos) |
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| 196 | { |
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| 197 | return -EINVAL; |
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| 198 | } |
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| 199 | |||
| 200 | static ssize_t joydev_read(struct file *file, char *buf, size_t count, loff_t *ppos) |
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| 201 | { |
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| 202 | struct joydev_list *list = file->private_data; |
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| 203 | struct joydev *joydev = list->joydev; |
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| 204 | struct input_dev *input = joydev->handle.dev; |
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| 205 | int retval = 0; |
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| 206 | |||
| 207 | if (!list->joydev->exist) |
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| 208 | return -ENODEV; |
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| 209 | |||
| 210 | if (count < sizeof(struct js_event)) |
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| 211 | return -EINVAL; |
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| 212 | |||
| 213 | if (count == sizeof(struct JS_DATA_TYPE)) { |
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| 214 | |||
| 215 | struct JS_DATA_TYPE data; |
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| 216 | int i; |
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| 217 | |||
| 218 | for (data.buttons = i = 0; i < 32 && i < joydev->nkey; i++) |
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| 219 | data.buttons |= test_bit(joydev->keypam[i], input->key) ? (1 << i) : 0; |
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| 220 | data.x = (joydev->abs[0] / 256 + 128) >> joydev->glue.JS_CORR.x; |
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| 221 | data.y = (joydev->abs[1] / 256 + 128) >> joydev->glue.JS_CORR.y; |
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| 222 | |||
| 223 | if (copy_to_user(buf, &data, sizeof(struct JS_DATA_TYPE))) |
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| 224 | return -EFAULT; |
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| 225 | |||
| 226 | list->startup = 0; |
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| 227 | list->tail = list->head; |
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| 228 | |||
| 229 | return sizeof(struct JS_DATA_TYPE); |
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| 230 | } |
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| 231 | |||
| 232 | if (list->startup == joydev->nabs + joydev->nkey |
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| 233 | && list->head == list->tail && (file->f_flags & O_NONBLOCK)) |
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| 234 | return -EAGAIN; |
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| 235 | |||
| 236 | retval = wait_event_interruptible(list->joydev->wait, list->joydev->exist |
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| 237 | && (list->startup < joydev->nabs + joydev->nkey || list->head != list->tail)); |
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| 238 | |||
| 239 | if (retval) |
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| 240 | return retval; |
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| 241 | |||
| 242 | if (!list->joydev->exist) |
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| 243 | return -ENODEV; |
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| 244 | |||
| 245 | while (list->startup < joydev->nabs + joydev->nkey && retval + sizeof(struct js_event) <= count) { |
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| 246 | |||
| 247 | struct js_event event; |
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| 248 | |||
| 249 | event.time = MSECS(jiffies); |
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| 250 | |||
| 251 | if (list->startup < joydev->nkey) { |
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| 252 | event.type = JS_EVENT_BUTTON | JS_EVENT_INIT; |
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| 253 | event.number = list->startup; |
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| 254 | event.value = !!test_bit(joydev->keypam[event.number], input->key); |
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| 255 | } else { |
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| 256 | event.type = JS_EVENT_AXIS | JS_EVENT_INIT; |
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| 257 | event.number = list->startup - joydev->nkey; |
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| 258 | event.value = joydev->abs[event.number]; |
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| 259 | } |
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| 260 | |||
| 261 | if (copy_to_user(buf + retval, &event, sizeof(struct js_event))) |
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| 262 | return -EFAULT; |
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| 263 | |||
| 264 | list->startup++; |
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| 265 | retval += sizeof(struct js_event); |
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| 266 | } |
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| 267 | |||
| 268 | while (list->head != list->tail && retval + sizeof(struct js_event) <= count) { |
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| 269 | |||
| 270 | if (copy_to_user(buf + retval, list->buffer + list->tail, sizeof(struct js_event))) |
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| 271 | return -EFAULT; |
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| 272 | |||
| 273 | list->tail = (list->tail + 1) & (JOYDEV_BUFFER_SIZE - 1); |
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| 274 | retval += sizeof(struct js_event); |
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| 275 | } |
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| 276 | |||
| 277 | return retval; |
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| 278 | } |
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| 279 | |||
| 280 | /* No kernel lock - fine */ |
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| 281 | static unsigned int joydev_poll(struct file *file, poll_table *wait) |
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| 282 | { |
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| 283 | struct joydev_list *list = file->private_data; |
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| 284 | poll_wait(file, &list->joydev->wait, wait); |
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| 285 | if (list->head != list->tail || list->startup < list->joydev->nabs + list->joydev->nkey) |
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| 286 | return POLLIN | POLLRDNORM; |
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| 287 | return 0; |
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| 288 | } |
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| 289 | |||
| 290 | static int joydev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) |
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| 291 | { |
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| 292 | struct joydev_list *list = file->private_data; |
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| 293 | struct joydev *joydev = list->joydev; |
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| 294 | struct input_dev *dev = joydev->handle.dev; |
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| 295 | int i; |
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| 296 | |||
| 297 | if (!joydev->exist) return -ENODEV; |
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| 298 | |||
| 299 | switch (cmd) { |
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| 300 | |||
| 301 | case JS_SET_CAL: |
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| 302 | return copy_from_user(&joydev->glue.JS_CORR, (struct JS_DATA_TYPE *) arg, |
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| 303 | sizeof(struct JS_DATA_TYPE)) ? -EFAULT : 0; |
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| 304 | case JS_GET_CAL: |
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| 305 | return copy_to_user((struct JS_DATA_TYPE *) arg, &joydev->glue.JS_CORR, |
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| 306 | sizeof(struct JS_DATA_TYPE)) ? -EFAULT : 0; |
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| 307 | case JS_SET_TIMEOUT: |
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| 308 | return get_user(joydev->glue.JS_TIMEOUT, (int *) arg); |
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| 309 | case JS_GET_TIMEOUT: |
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| 310 | return put_user(joydev->glue.JS_TIMEOUT, (int *) arg); |
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| 311 | case JS_SET_TIMELIMIT: |
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| 312 | return get_user(joydev->glue.JS_TIMELIMIT, (long *) arg); |
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| 313 | case JS_GET_TIMELIMIT: |
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| 314 | return put_user(joydev->glue.JS_TIMELIMIT, (long *) arg); |
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| 315 | case JS_SET_ALL: |
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| 316 | return copy_from_user(&joydev->glue, (struct JS_DATA_SAVE_TYPE *) arg, |
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| 317 | sizeof(struct JS_DATA_SAVE_TYPE)) ? -EFAULT : 0; |
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| 318 | case JS_GET_ALL: |
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| 319 | return copy_to_user((struct JS_DATA_SAVE_TYPE *) arg, &joydev->glue, |
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| 320 | sizeof(struct JS_DATA_SAVE_TYPE)) ? -EFAULT : 0; |
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| 321 | |||
| 322 | case JSIOCGVERSION: |
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| 323 | return put_user(JS_VERSION, (__u32 *) arg); |
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| 324 | case JSIOCGAXES: |
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| 325 | return put_user(joydev->nabs, (__u8 *) arg); |
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| 326 | case JSIOCGBUTTONS: |
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| 327 | return put_user(joydev->nkey, (__u8 *) arg); |
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| 328 | case JSIOCSCORR: |
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| 329 | return copy_from_user(joydev->corr, (struct js_corr *) arg, |
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| 330 | sizeof(struct js_corr) * joydev->nabs) ? -EFAULT : 0; |
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| 331 | case JSIOCGCORR: |
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| 332 | return copy_to_user((struct js_corr *) arg, joydev->corr, |
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| 333 | sizeof(struct js_corr) * joydev->nabs) ? -EFAULT : 0; |
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| 334 | case JSIOCSAXMAP: |
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| 335 | if (copy_from_user(joydev->abspam, (__u8 *) arg, sizeof(__u8) * ABS_MAX)) |
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| 336 | return -EFAULT; |
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| 337 | for (i = 0; i < joydev->nabs; i++) { |
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| 338 | if (joydev->abspam[i] > ABS_MAX) return -EINVAL; |
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| 339 | joydev->absmap[joydev->abspam[i]] = i; |
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| 340 | } |
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| 341 | return 0; |
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| 342 | case JSIOCGAXMAP: |
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| 343 | return copy_to_user((__u8 *) arg, joydev->abspam, |
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| 344 | sizeof(__u8) * ABS_MAX) ? -EFAULT : 0; |
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| 345 | case JSIOCSBTNMAP: |
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| 346 | if (copy_from_user(joydev->keypam, (__u16 *) arg, sizeof(__u16) * (KEY_MAX - BTN_MISC))) |
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| 347 | return -EFAULT; |
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| 348 | for (i = 0; i < joydev->nkey; i++) { |
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| 349 | if (joydev->keypam[i] > KEY_MAX || joydev->keypam[i] < BTN_MISC) return -EINVAL; |
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| 350 | joydev->keymap[joydev->keypam[i] - BTN_MISC] = i; |
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| 351 | } |
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| 352 | return 0; |
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| 353 | case JSIOCGBTNMAP: |
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| 354 | return copy_to_user((__u16 *) arg, joydev->keypam, |
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| 355 | sizeof(__u16) * (KEY_MAX - BTN_MISC)) ? -EFAULT : 0; |
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| 356 | default: |
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| 357 | if ((cmd & ~(_IOC_SIZEMASK << _IOC_SIZESHIFT)) == JSIOCGNAME(0)) { |
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| 358 | int len; |
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| 359 | if (!dev->name) return 0; |
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| 360 | len = strlen(dev->name) + 1; |
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| 361 | if (len > _IOC_SIZE(cmd)) len = _IOC_SIZE(cmd); |
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| 362 | if (copy_to_user((char *) arg, dev->name, len)) return -EFAULT; |
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| 363 | return len; |
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| 364 | } |
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| 365 | } |
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| 366 | return -EINVAL; |
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| 367 | } |
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| 368 | |||
| 369 | static struct file_operations joydev_fops = { |
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| 370 | .owner = THIS_MODULE, |
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| 371 | .read = joydev_read, |
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| 372 | .write = joydev_write, |
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| 373 | .poll = joydev_poll, |
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| 374 | .open = joydev_open, |
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| 375 | .release = joydev_release, |
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| 376 | .ioctl = joydev_ioctl, |
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| 377 | .fasync = joydev_fasync, |
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| 378 | }; |
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| 379 | |||
| 380 | static struct input_handle *joydev_connect(struct input_handler *handler, struct input_dev *dev, struct input_device_id *id) |
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| 381 | { |
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| 382 | struct joydev *joydev; |
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| 383 | int i, j, t, minor; |
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| 384 | |||
| 385 | /* Avoid tablets */ |
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| 386 | if (test_bit(EV_KEY, dev->evbit) && test_bit(BTN_TOUCH, dev->keybit)) |
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| 387 | return NULL; |
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| 388 | |||
| 389 | for (minor = 0; minor < JOYDEV_MINORS && joydev_table[minor]; minor++); |
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| 390 | if (minor == JOYDEV_MINORS) { |
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| 391 | printk(KERN_ERR "joydev: no more free joydev devices\n"); |
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| 392 | return NULL; |
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| 393 | } |
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| 394 | |||
| 395 | if (!(joydev = kmalloc(sizeof(struct joydev), GFP_KERNEL))) |
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| 396 | return NULL; |
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| 397 | memset(joydev, 0, sizeof(struct joydev)); |
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| 398 | |||
| 399 | INIT_LIST_HEAD(&joydev->list); |
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| 400 | init_waitqueue_head(&joydev->wait); |
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| 401 | |||
| 402 | joydev->minor = minor; |
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| 403 | joydev->exist = 1; |
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| 404 | joydev->handle.dev = dev; |
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| 405 | joydev->handle.name = joydev->name; |
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| 406 | joydev->handle.handler = handler; |
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| 407 | joydev->handle.private = joydev; |
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| 408 | sprintf26(joydev->name, "js%d", minor); |
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| 409 | |||
| 410 | for (i = 0; i < ABS_MAX; i++) |
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| 411 | if (test_bit(i, dev->absbit)) { |
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| 412 | joydev->absmap[i] = joydev->nabs; |
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| 413 | joydev->abspam[joydev->nabs] = i; |
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| 414 | joydev->nabs++; |
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| 415 | } |
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| 416 | |||
| 417 | for (i = BTN_JOYSTICK - BTN_MISC; i < KEY_MAX - BTN_MISC; i++) |
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| 418 | if (test_bit(i + BTN_MISC, dev->keybit)) { |
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| 419 | joydev->keymap[i] = joydev->nkey; |
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| 420 | joydev->keypam[joydev->nkey] = i + BTN_MISC; |
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| 421 | joydev->nkey++; |
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| 422 | } |
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| 423 | |||
| 424 | for (i = 0; i < BTN_JOYSTICK - BTN_MISC; i++) |
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| 425 | if (test_bit(i + BTN_MISC, dev->keybit)) { |
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| 426 | joydev->keymap[i] = joydev->nkey; |
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| 427 | joydev->keypam[joydev->nkey] = i + BTN_MISC; |
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| 428 | joydev->nkey++; |
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| 429 | } |
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| 430 | |||
| 431 | for (i = 0; i < joydev->nabs; i++) { |
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| 432 | j = joydev->abspam[i]; |
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| 433 | if (dev->absmax[j] == dev->absmin[j]) { |
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| 434 | joydev->corr[i].type = JS_CORR_NONE; |
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| 435 | continue; |
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| 436 | } |
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| 437 | joydev->corr[i].type = JS_CORR_BROKEN; |
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| 438 | joydev->corr[i].prec = dev->absfuzz[j]; |
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| 439 | joydev->corr[i].coef[0] = (dev->absmax[j] + dev->absmin[j]) / 2 - dev->absflat[j]; |
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| 440 | joydev->corr[i].coef[1] = (dev->absmax[j] + dev->absmin[j]) / 2 + dev->absflat[j]; |
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| 441 | if (!(t = ((dev->absmax[j] - dev->absmin[j]) / 2 - 2 * dev->absflat[j]))) |
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| 442 | continue; |
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| 443 | joydev->corr[i].coef[2] = (1 << 29) / t; |
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| 444 | joydev->corr[i].coef[3] = (1 << 29) / t; |
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| 445 | |||
| 446 | joydev->abs[i] = joydev_correct(dev->abs[j], joydev->corr + i); |
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| 447 | } |
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| 448 | |||
| 449 | joydev_table[minor] = joydev; |
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| 450 | |||
| 451 | devfs_mk_cdev(MKDEV(INPUT_MAJOR, JOYDEV_MINOR_BASE + minor), |
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| 452 | S_IFCHR|S_IRUGO|S_IWUSR, "js%d", minor); |
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| 453 | |||
| 454 | return &joydev->handle; |
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| 455 | } |
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| 456 | |||
| 457 | static void joydev_disconnect(struct input_handle *handle) |
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| 458 | { |
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| 459 | struct joydev *joydev = handle->private; |
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| 460 | |||
| 461 | joydev->exist = 0; |
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| 462 | |||
| 463 | if (joydev->open) |
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| 464 | input_close_device(handle); |
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| 465 | else |
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| 466 | joydev_free(joydev); |
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| 467 | } |
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| 468 | |||
| 469 | static struct input_device_id joydev_ids[] = { |
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| 470 | { |
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| 471 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_ABSBIT, |
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| 472 | .evbit = { BIT(EV_ABS) }, |
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| 473 | .absbit = { BIT(ABS_X) }, |
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| 474 | }, |
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| 475 | { |
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| 476 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_ABSBIT, |
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| 477 | .evbit = { BIT(EV_ABS) }, |
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| 478 | .absbit = { BIT(ABS_WHEEL) }, |
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| 479 | }, |
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| 480 | { |
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| 481 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_ABSBIT, |
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| 482 | .evbit = { BIT(EV_ABS) }, |
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| 483 | .absbit = { BIT(ABS_THROTTLE) }, |
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| 484 | }, |
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| 485 | { }, /* Terminating entry */ |
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| 486 | }; |
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| 487 | |||
| 488 | MODULE_DEVICE_TABLE(input, joydev_ids); |
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| 489 | |||
| 490 | static struct input_handler joydev_handler = { |
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| 491 | .event = joydev_event, |
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| 492 | .connect = joydev_connect, |
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| 493 | .disconnect = joydev_disconnect, |
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| 494 | .fops = &joydev_fops, |
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| 495 | .minor = JOYDEV_MINOR_BASE, |
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| 496 | .name = "joydev", |
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| 497 | .id_table = joydev_ids, |
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| 498 | }; |
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| 499 | |||
| 500 | /*static*/ int __init joydev_init(void) |
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| 501 | { |
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| 502 | input_register_handler(&joydev_handler); |
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| 503 | return 0; |
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| 504 | } |
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| 505 | |||
| 506 | /*static*/ void __exit joydev_exit(void) |
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| 507 | { |
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| 508 | input_unregister_handler(&joydev_handler); |
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| 509 | } |
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| 510 | |||
| 511 | module_init(joydev_init); |
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| 512 | module_exit(joydev_exit); |