Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Joystick device driver for the input driver suite. |
| 3 | * |
| 4 | * Copyright (c) 1999-2002 Vojtech Pavlik |
| 5 | * Copyright (c) 1999 Colin Van Dyke |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | */ |
| 12 | |
Joe Perches | da0c490 | 2010-11-29 23:33:07 -0800 | [diff] [blame] | 13 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 14 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | #include <asm/io.h> |
| 16 | #include <asm/system.h> |
| 17 | #include <linux/delay.h> |
| 18 | #include <linux/errno.h> |
| 19 | #include <linux/joystick.h> |
| 20 | #include <linux/input.h> |
| 21 | #include <linux/kernel.h> |
| 22 | #include <linux/major.h> |
Alexey Dobriyan | a99bbaf | 2009-10-04 16:11:37 +0400 | [diff] [blame] | 23 | #include <linux/sched.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include <linux/slab.h> |
| 25 | #include <linux/mm.h> |
| 26 | #include <linux/miscdevice.h> |
| 27 | #include <linux/module.h> |
| 28 | #include <linux/poll.h> |
| 29 | #include <linux/init.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <linux/device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | |
| 32 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); |
| 33 | MODULE_DESCRIPTION("Joystick device interfaces"); |
| 34 | MODULE_SUPPORTED_DEVICE("input/js"); |
| 35 | MODULE_LICENSE("GPL"); |
| 36 | |
| 37 | #define JOYDEV_MINOR_BASE 0 |
| 38 | #define JOYDEV_MINORS 16 |
| 39 | #define JOYDEV_BUFFER_SIZE 64 |
| 40 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | struct joydev { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | int open; |
| 43 | int minor; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | struct input_handle handle; |
| 45 | wait_queue_head_t wait; |
Dmitry Torokhov | d0ffb9b | 2007-04-12 01:30:00 -0400 | [diff] [blame] | 46 | struct list_head client_list; |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 47 | spinlock_t client_lock; /* protects client_list */ |
| 48 | struct mutex mutex; |
Dmitry Torokhov | 9657d75 | 2007-06-14 23:32:24 -0400 | [diff] [blame] | 49 | struct device dev; |
Dmitry Torokhov | 20da92d | 2010-07-15 23:27:36 -0700 | [diff] [blame] | 50 | bool exist; |
Dmitry Torokhov | 9657d75 | 2007-06-14 23:32:24 -0400 | [diff] [blame] | 51 | |
Daniel Mack | 81c2a3b | 2010-05-20 22:52:58 -0700 | [diff] [blame] | 52 | struct js_corr corr[ABS_CNT]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | struct JS_DATA_SAVE_TYPE glue; |
| 54 | int nabs; |
| 55 | int nkey; |
| 56 | __u16 keymap[KEY_MAX - BTN_MISC + 1]; |
| 57 | __u16 keypam[KEY_MAX - BTN_MISC + 1]; |
Daniel Mack | 81c2a3b | 2010-05-20 22:52:58 -0700 | [diff] [blame] | 58 | __u8 absmap[ABS_CNT]; |
| 59 | __u8 abspam[ABS_CNT]; |
| 60 | __s16 abs[ABS_CNT]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | }; |
| 62 | |
Dmitry Torokhov | d0ffb9b | 2007-04-12 01:30:00 -0400 | [diff] [blame] | 63 | struct joydev_client { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | struct js_event buffer[JOYDEV_BUFFER_SIZE]; |
| 65 | int head; |
| 66 | int tail; |
| 67 | int startup; |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 68 | spinlock_t buffer_lock; /* protects access to buffer, head and tail */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | struct fasync_struct *fasync; |
| 70 | struct joydev *joydev; |
| 71 | struct list_head node; |
| 72 | }; |
| 73 | |
| 74 | static struct joydev *joydev_table[JOYDEV_MINORS]; |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 75 | static DEFINE_MUTEX(joydev_table_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | |
| 77 | static int joydev_correct(int value, struct js_corr *corr) |
| 78 | { |
| 79 | switch (corr->type) { |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 80 | |
| 81 | case JS_CORR_NONE: |
| 82 | break; |
| 83 | |
| 84 | case JS_CORR_BROKEN: |
| 85 | value = value > corr->coef[0] ? (value < corr->coef[1] ? 0 : |
| 86 | ((corr->coef[3] * (value - corr->coef[1])) >> 14)) : |
| 87 | ((corr->coef[2] * (value - corr->coef[0])) >> 14); |
| 88 | break; |
| 89 | |
| 90 | default: |
| 91 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | } |
| 93 | |
Dmitry Torokhov | 1e0afb2 | 2006-06-26 01:48:47 -0400 | [diff] [blame] | 94 | return value < -32767 ? -32767 : (value > 32767 ? 32767 : value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | } |
| 96 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 97 | static void joydev_pass_event(struct joydev_client *client, |
| 98 | struct js_event *event) |
| 99 | { |
| 100 | struct joydev *joydev = client->joydev; |
| 101 | |
| 102 | /* |
| 103 | * IRQs already disabled, just acquire the lock |
| 104 | */ |
| 105 | spin_lock(&client->buffer_lock); |
| 106 | |
| 107 | client->buffer[client->head] = *event; |
| 108 | |
| 109 | if (client->startup == joydev->nabs + joydev->nkey) { |
| 110 | client->head++; |
| 111 | client->head &= JOYDEV_BUFFER_SIZE - 1; |
| 112 | if (client->tail == client->head) |
| 113 | client->startup = 0; |
| 114 | } |
| 115 | |
| 116 | spin_unlock(&client->buffer_lock); |
| 117 | |
| 118 | kill_fasync(&client->fasync, SIGIO, POLL_IN); |
| 119 | } |
| 120 | |
| 121 | static void joydev_event(struct input_handle *handle, |
| 122 | unsigned int type, unsigned int code, int value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | { |
| 124 | struct joydev *joydev = handle->private; |
Dmitry Torokhov | d0ffb9b | 2007-04-12 01:30:00 -0400 | [diff] [blame] | 125 | struct joydev_client *client; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | struct js_event event; |
| 127 | |
| 128 | switch (type) { |
| 129 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 130 | case EV_KEY: |
| 131 | if (code < BTN_MISC || value == 2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | return; |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 133 | event.type = JS_EVENT_BUTTON; |
| 134 | event.number = joydev->keymap[code - BTN_MISC]; |
| 135 | event.value = value; |
| 136 | break; |
| 137 | |
| 138 | case EV_ABS: |
| 139 | event.type = JS_EVENT_AXIS; |
| 140 | event.number = joydev->absmap[code]; |
| 141 | event.value = joydev_correct(value, |
| 142 | &joydev->corr[event.number]); |
| 143 | if (event.value == joydev->abs[event.number]) |
| 144 | return; |
| 145 | joydev->abs[event.number] = event.value; |
| 146 | break; |
| 147 | |
| 148 | default: |
| 149 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | } |
| 151 | |
Tobias Klauser | 6f5eacf | 2005-07-11 01:08:56 -0500 | [diff] [blame] | 152 | event.time = jiffies_to_msecs(jiffies); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | |
Dmitry Torokhov | 82ba56c | 2007-10-13 15:46:55 -0400 | [diff] [blame] | 154 | rcu_read_lock(); |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 155 | list_for_each_entry_rcu(client, &joydev->client_list, node) |
| 156 | joydev_pass_event(client, &event); |
Dmitry Torokhov | 82ba56c | 2007-10-13 15:46:55 -0400 | [diff] [blame] | 157 | rcu_read_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | |
| 159 | wake_up_interruptible(&joydev->wait); |
| 160 | } |
| 161 | |
| 162 | static int joydev_fasync(int fd, struct file *file, int on) |
| 163 | { |
Dmitry Torokhov | d0ffb9b | 2007-04-12 01:30:00 -0400 | [diff] [blame] | 164 | struct joydev_client *client = file->private_data; |
Dmitry Torokhov | 1e0afb2 | 2006-06-26 01:48:47 -0400 | [diff] [blame] | 165 | |
Jonathan Corbet | 60aa492 | 2009-02-01 14:52:56 -0700 | [diff] [blame] | 166 | return fasync_helper(fd, file, on, &client->fasync); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | } |
| 168 | |
Dmitry Torokhov | 9657d75 | 2007-06-14 23:32:24 -0400 | [diff] [blame] | 169 | static void joydev_free(struct device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | { |
Dmitry Torokhov | 9657d75 | 2007-06-14 23:32:24 -0400 | [diff] [blame] | 171 | struct joydev *joydev = container_of(dev, struct joydev, dev); |
| 172 | |
Dmitry Torokhov | a7097ff | 2008-04-01 00:22:53 -0400 | [diff] [blame] | 173 | input_put_device(joydev->handle.dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | kfree(joydev); |
| 175 | } |
| 176 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 177 | static void joydev_attach_client(struct joydev *joydev, |
| 178 | struct joydev_client *client) |
| 179 | { |
| 180 | spin_lock(&joydev->client_lock); |
| 181 | list_add_tail_rcu(&client->node, &joydev->client_list); |
| 182 | spin_unlock(&joydev->client_lock); |
Dmitry Torokhov | 82ba56c | 2007-10-13 15:46:55 -0400 | [diff] [blame] | 183 | synchronize_rcu(); |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 184 | } |
| 185 | |
| 186 | static void joydev_detach_client(struct joydev *joydev, |
| 187 | struct joydev_client *client) |
| 188 | { |
| 189 | spin_lock(&joydev->client_lock); |
| 190 | list_del_rcu(&client->node); |
| 191 | spin_unlock(&joydev->client_lock); |
Dmitry Torokhov | 82ba56c | 2007-10-13 15:46:55 -0400 | [diff] [blame] | 192 | synchronize_rcu(); |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 193 | } |
| 194 | |
| 195 | static int joydev_open_device(struct joydev *joydev) |
| 196 | { |
| 197 | int retval; |
| 198 | |
| 199 | retval = mutex_lock_interruptible(&joydev->mutex); |
| 200 | if (retval) |
| 201 | return retval; |
| 202 | |
| 203 | if (!joydev->exist) |
| 204 | retval = -ENODEV; |
Oliver Neukum | 0644501 | 2007-10-12 14:18:40 -0400 | [diff] [blame] | 205 | else if (!joydev->open++) { |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 206 | retval = input_open_device(&joydev->handle); |
Oliver Neukum | 0644501 | 2007-10-12 14:18:40 -0400 | [diff] [blame] | 207 | if (retval) |
| 208 | joydev->open--; |
| 209 | } |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 210 | |
| 211 | mutex_unlock(&joydev->mutex); |
| 212 | return retval; |
| 213 | } |
| 214 | |
| 215 | static void joydev_close_device(struct joydev *joydev) |
| 216 | { |
| 217 | mutex_lock(&joydev->mutex); |
| 218 | |
| 219 | if (joydev->exist && !--joydev->open) |
| 220 | input_close_device(&joydev->handle); |
| 221 | |
| 222 | mutex_unlock(&joydev->mutex); |
| 223 | } |
| 224 | |
| 225 | /* |
| 226 | * Wake up users waiting for IO so they can disconnect from |
| 227 | * dead device. |
| 228 | */ |
| 229 | static void joydev_hangup(struct joydev *joydev) |
| 230 | { |
| 231 | struct joydev_client *client; |
| 232 | |
| 233 | spin_lock(&joydev->client_lock); |
| 234 | list_for_each_entry(client, &joydev->client_list, node) |
| 235 | kill_fasync(&client->fasync, SIGIO, POLL_HUP); |
| 236 | spin_unlock(&joydev->client_lock); |
| 237 | |
| 238 | wake_up_interruptible(&joydev->wait); |
| 239 | } |
| 240 | |
Dmitry Torokhov | d0ffb9b | 2007-04-12 01:30:00 -0400 | [diff] [blame] | 241 | static int joydev_release(struct inode *inode, struct file *file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | { |
Dmitry Torokhov | d0ffb9b | 2007-04-12 01:30:00 -0400 | [diff] [blame] | 243 | struct joydev_client *client = file->private_data; |
| 244 | struct joydev *joydev = client->joydev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 246 | joydev_detach_client(joydev, client); |
Dmitry Torokhov | d0ffb9b | 2007-04-12 01:30:00 -0400 | [diff] [blame] | 247 | kfree(client); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 249 | joydev_close_device(joydev); |
Dmitry Torokhov | 9657d75 | 2007-06-14 23:32:24 -0400 | [diff] [blame] | 250 | put_device(&joydev->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | return 0; |
| 253 | } |
| 254 | |
| 255 | static int joydev_open(struct inode *inode, struct file *file) |
| 256 | { |
Dmitry Torokhov | d0ffb9b | 2007-04-12 01:30:00 -0400 | [diff] [blame] | 257 | struct joydev_client *client; |
| 258 | struct joydev *joydev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | int i = iminor(inode) - JOYDEV_MINOR_BASE; |
Dmitry Torokhov | d542ed8 | 2007-04-12 01:30:15 -0400 | [diff] [blame] | 260 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | |
Dmitry Torokhov | d0ffb9b | 2007-04-12 01:30:00 -0400 | [diff] [blame] | 262 | if (i >= JOYDEV_MINORS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | return -ENODEV; |
| 264 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 265 | error = mutex_lock_interruptible(&joydev_table_mutex); |
| 266 | if (error) |
| 267 | return error; |
Dmitry Torokhov | d0ffb9b | 2007-04-12 01:30:00 -0400 | [diff] [blame] | 268 | joydev = joydev_table[i]; |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 269 | if (joydev) |
| 270 | get_device(&joydev->dev); |
| 271 | mutex_unlock(&joydev_table_mutex); |
Dmitry Torokhov | d0ffb9b | 2007-04-12 01:30:00 -0400 | [diff] [blame] | 272 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 273 | if (!joydev) |
| 274 | return -ENODEV; |
Dmitry Torokhov | 9657d75 | 2007-06-14 23:32:24 -0400 | [diff] [blame] | 275 | |
Dmitry Torokhov | d0ffb9b | 2007-04-12 01:30:00 -0400 | [diff] [blame] | 276 | client = kzalloc(sizeof(struct joydev_client), GFP_KERNEL); |
Dmitry Torokhov | 9657d75 | 2007-06-14 23:32:24 -0400 | [diff] [blame] | 277 | if (!client) { |
| 278 | error = -ENOMEM; |
| 279 | goto err_put_joydev; |
| 280 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 282 | spin_lock_init(&client->buffer_lock); |
Dmitry Torokhov | d0ffb9b | 2007-04-12 01:30:00 -0400 | [diff] [blame] | 283 | client->joydev = joydev; |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 284 | joydev_attach_client(joydev, client); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 286 | error = joydev_open_device(joydev); |
| 287 | if (error) |
| 288 | goto err_free_client; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | |
Dmitry Torokhov | d0ffb9b | 2007-04-12 01:30:00 -0400 | [diff] [blame] | 290 | file->private_data = client; |
Dmitry Torokhov | 3d7bbd4 | 2010-02-04 00:30:42 -0800 | [diff] [blame] | 291 | nonseekable_open(inode, file); |
| 292 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | return 0; |
Dmitry Torokhov | 9657d75 | 2007-06-14 23:32:24 -0400 | [diff] [blame] | 294 | |
| 295 | err_free_client: |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 296 | joydev_detach_client(joydev, client); |
Dmitry Torokhov | 9657d75 | 2007-06-14 23:32:24 -0400 | [diff] [blame] | 297 | kfree(client); |
| 298 | err_put_joydev: |
| 299 | put_device(&joydev->dev); |
| 300 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | } |
| 302 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 303 | static int joydev_generate_startup_event(struct joydev_client *client, |
| 304 | struct input_dev *input, |
| 305 | struct js_event *event) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | { |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 307 | struct joydev *joydev = client->joydev; |
| 308 | int have_event; |
| 309 | |
| 310 | spin_lock_irq(&client->buffer_lock); |
| 311 | |
| 312 | have_event = client->startup < joydev->nabs + joydev->nkey; |
| 313 | |
| 314 | if (have_event) { |
| 315 | |
| 316 | event->time = jiffies_to_msecs(jiffies); |
| 317 | if (client->startup < joydev->nkey) { |
| 318 | event->type = JS_EVENT_BUTTON | JS_EVENT_INIT; |
| 319 | event->number = client->startup; |
| 320 | event->value = !!test_bit(joydev->keypam[event->number], |
| 321 | input->key); |
| 322 | } else { |
| 323 | event->type = JS_EVENT_AXIS | JS_EVENT_INIT; |
| 324 | event->number = client->startup - joydev->nkey; |
| 325 | event->value = joydev->abs[event->number]; |
| 326 | } |
| 327 | client->startup++; |
| 328 | } |
| 329 | |
| 330 | spin_unlock_irq(&client->buffer_lock); |
| 331 | |
| 332 | return have_event; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | } |
| 334 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 335 | static int joydev_fetch_next_event(struct joydev_client *client, |
| 336 | struct js_event *event) |
| 337 | { |
| 338 | int have_event; |
| 339 | |
| 340 | spin_lock_irq(&client->buffer_lock); |
| 341 | |
| 342 | have_event = client->head != client->tail; |
| 343 | if (have_event) { |
| 344 | *event = client->buffer[client->tail++]; |
| 345 | client->tail &= JOYDEV_BUFFER_SIZE - 1; |
| 346 | } |
| 347 | |
| 348 | spin_unlock_irq(&client->buffer_lock); |
| 349 | |
| 350 | return have_event; |
| 351 | } |
| 352 | |
| 353 | /* |
| 354 | * Old joystick interface |
| 355 | */ |
| 356 | static ssize_t joydev_0x_read(struct joydev_client *client, |
| 357 | struct input_dev *input, |
| 358 | char __user *buf) |
| 359 | { |
| 360 | struct joydev *joydev = client->joydev; |
| 361 | struct JS_DATA_TYPE data; |
| 362 | int i; |
| 363 | |
| 364 | spin_lock_irq(&input->event_lock); |
| 365 | |
| 366 | /* |
| 367 | * Get device state |
| 368 | */ |
| 369 | for (data.buttons = i = 0; i < 32 && i < joydev->nkey; i++) |
| 370 | data.buttons |= |
| 371 | test_bit(joydev->keypam[i], input->key) ? (1 << i) : 0; |
| 372 | data.x = (joydev->abs[0] / 256 + 128) >> joydev->glue.JS_CORR.x; |
| 373 | data.y = (joydev->abs[1] / 256 + 128) >> joydev->glue.JS_CORR.y; |
| 374 | |
| 375 | /* |
| 376 | * Reset reader's event queue |
| 377 | */ |
| 378 | spin_lock(&client->buffer_lock); |
| 379 | client->startup = 0; |
| 380 | client->tail = client->head; |
| 381 | spin_unlock(&client->buffer_lock); |
| 382 | |
| 383 | spin_unlock_irq(&input->event_lock); |
| 384 | |
| 385 | if (copy_to_user(buf, &data, sizeof(struct JS_DATA_TYPE))) |
| 386 | return -EFAULT; |
| 387 | |
| 388 | return sizeof(struct JS_DATA_TYPE); |
| 389 | } |
| 390 | |
| 391 | static inline int joydev_data_pending(struct joydev_client *client) |
| 392 | { |
| 393 | struct joydev *joydev = client->joydev; |
| 394 | |
| 395 | return client->startup < joydev->nabs + joydev->nkey || |
| 396 | client->head != client->tail; |
| 397 | } |
| 398 | |
| 399 | static ssize_t joydev_read(struct file *file, char __user *buf, |
| 400 | size_t count, loff_t *ppos) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | { |
Dmitry Torokhov | d0ffb9b | 2007-04-12 01:30:00 -0400 | [diff] [blame] | 402 | struct joydev_client *client = file->private_data; |
| 403 | struct joydev *joydev = client->joydev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | struct input_dev *input = joydev->handle.dev; |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 405 | struct js_event event; |
| 406 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | |
Dmitry Torokhov | d0ffb9b | 2007-04-12 01:30:00 -0400 | [diff] [blame] | 408 | if (!joydev->exist) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | return -ENODEV; |
| 410 | |
| 411 | if (count < sizeof(struct js_event)) |
| 412 | return -EINVAL; |
| 413 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 414 | if (count == sizeof(struct JS_DATA_TYPE)) |
| 415 | return joydev_0x_read(client, input, buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 417 | if (!joydev_data_pending(client) && (file->f_flags & O_NONBLOCK)) |
Dmitry Torokhov | 1e0afb2 | 2006-06-26 01:48:47 -0400 | [diff] [blame] | 418 | return -EAGAIN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | |
Dmitry Torokhov | d0ffb9b | 2007-04-12 01:30:00 -0400 | [diff] [blame] | 420 | retval = wait_event_interruptible(joydev->wait, |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 421 | !joydev->exist || joydev_data_pending(client)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | if (retval) |
| 423 | return retval; |
| 424 | |
Dmitry Torokhov | d0ffb9b | 2007-04-12 01:30:00 -0400 | [diff] [blame] | 425 | if (!joydev->exist) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | return -ENODEV; |
| 427 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 428 | while (retval + sizeof(struct js_event) <= count && |
| 429 | joydev_generate_startup_event(client, input, &event)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | |
| 431 | if (copy_to_user(buf + retval, &event, sizeof(struct js_event))) |
| 432 | return -EFAULT; |
| 433 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | retval += sizeof(struct js_event); |
| 435 | } |
| 436 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 437 | while (retval + sizeof(struct js_event) <= count && |
| 438 | joydev_fetch_next_event(client, &event)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 440 | if (copy_to_user(buf + retval, &event, sizeof(struct js_event))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | return -EFAULT; |
| 442 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | retval += sizeof(struct js_event); |
| 444 | } |
| 445 | |
| 446 | return retval; |
| 447 | } |
| 448 | |
| 449 | /* No kernel lock - fine */ |
| 450 | static unsigned int joydev_poll(struct file *file, poll_table *wait) |
| 451 | { |
Dmitry Torokhov | d0ffb9b | 2007-04-12 01:30:00 -0400 | [diff] [blame] | 452 | struct joydev_client *client = file->private_data; |
| 453 | struct joydev *joydev = client->joydev; |
Dmitry Torokhov | 1e0afb2 | 2006-06-26 01:48:47 -0400 | [diff] [blame] | 454 | |
Dmitry Torokhov | d0ffb9b | 2007-04-12 01:30:00 -0400 | [diff] [blame] | 455 | poll_wait(file, &joydev->wait, wait); |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 456 | return (joydev_data_pending(client) ? (POLLIN | POLLRDNORM) : 0) | |
| 457 | (joydev->exist ? 0 : (POLLHUP | POLLERR)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | } |
| 459 | |
Stephen Kitt | 999b874 | 2009-08-25 19:24:22 -0700 | [diff] [blame] | 460 | static int joydev_handle_JSIOCSAXMAP(struct joydev *joydev, |
| 461 | void __user *argp, size_t len) |
| 462 | { |
| 463 | __u8 *abspam; |
| 464 | int i; |
| 465 | int retval = 0; |
| 466 | |
| 467 | len = min(len, sizeof(joydev->abspam)); |
| 468 | |
| 469 | /* Validate the map. */ |
| 470 | abspam = kmalloc(len, GFP_KERNEL); |
| 471 | if (!abspam) |
| 472 | return -ENOMEM; |
| 473 | |
| 474 | if (copy_from_user(abspam, argp, len)) { |
| 475 | retval = -EFAULT; |
| 476 | goto out; |
| 477 | } |
| 478 | |
| 479 | for (i = 0; i < joydev->nabs; i++) { |
| 480 | if (abspam[i] > ABS_MAX) { |
| 481 | retval = -EINVAL; |
| 482 | goto out; |
| 483 | } |
| 484 | } |
| 485 | |
| 486 | memcpy(joydev->abspam, abspam, len); |
| 487 | |
Kenneth Waters | d2520a4 | 2010-09-21 00:58:23 -0700 | [diff] [blame] | 488 | for (i = 0; i < joydev->nabs; i++) |
| 489 | joydev->absmap[joydev->abspam[i]] = i; |
| 490 | |
Stephen Kitt | 999b874 | 2009-08-25 19:24:22 -0700 | [diff] [blame] | 491 | out: |
| 492 | kfree(abspam); |
| 493 | return retval; |
| 494 | } |
| 495 | |
| 496 | static int joydev_handle_JSIOCSBTNMAP(struct joydev *joydev, |
| 497 | void __user *argp, size_t len) |
| 498 | { |
| 499 | __u16 *keypam; |
| 500 | int i; |
| 501 | int retval = 0; |
| 502 | |
| 503 | len = min(len, sizeof(joydev->keypam)); |
| 504 | |
| 505 | /* Validate the map. */ |
| 506 | keypam = kmalloc(len, GFP_KERNEL); |
| 507 | if (!keypam) |
| 508 | return -ENOMEM; |
| 509 | |
| 510 | if (copy_from_user(keypam, argp, len)) { |
| 511 | retval = -EFAULT; |
| 512 | goto out; |
| 513 | } |
| 514 | |
| 515 | for (i = 0; i < joydev->nkey; i++) { |
| 516 | if (keypam[i] > KEY_MAX || keypam[i] < BTN_MISC) { |
| 517 | retval = -EINVAL; |
| 518 | goto out; |
| 519 | } |
| 520 | } |
| 521 | |
| 522 | memcpy(joydev->keypam, keypam, len); |
| 523 | |
| 524 | for (i = 0; i < joydev->nkey; i++) |
| 525 | joydev->keymap[keypam[i] - BTN_MISC] = i; |
| 526 | |
| 527 | out: |
| 528 | kfree(keypam); |
| 529 | return retval; |
| 530 | } |
| 531 | |
| 532 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 533 | static int joydev_ioctl_common(struct joydev *joydev, |
| 534 | unsigned int cmd, void __user *argp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | struct input_dev *dev = joydev->handle.dev; |
Stephen Kitt | ec8b4b7 | 2009-08-12 01:12:08 -0700 | [diff] [blame] | 537 | size_t len; |
Daniel Mack | 987a6c0 | 2010-08-02 20:15:17 -0700 | [diff] [blame] | 538 | int i; |
Stephen Kitt | ec8b4b7 | 2009-08-12 01:12:08 -0700 | [diff] [blame] | 539 | const char *name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | |
Stephen Kitt | ec8b4b7 | 2009-08-12 01:12:08 -0700 | [diff] [blame] | 541 | /* Process fixed-sized commands. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | switch (cmd) { |
| 543 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 544 | case JS_SET_CAL: |
| 545 | return copy_from_user(&joydev->glue.JS_CORR, argp, |
Jeremy Fitzhardinge | 024ac44 | 2005-05-29 02:26:31 -0500 | [diff] [blame] | 546 | sizeof(joydev->glue.JS_CORR)) ? -EFAULT : 0; |
Dmitry Torokhov | 1e0afb2 | 2006-06-26 01:48:47 -0400 | [diff] [blame] | 547 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 548 | case JS_GET_CAL: |
| 549 | return copy_to_user(argp, &joydev->glue.JS_CORR, |
Jeremy Fitzhardinge | 024ac44 | 2005-05-29 02:26:31 -0500 | [diff] [blame] | 550 | sizeof(joydev->glue.JS_CORR)) ? -EFAULT : 0; |
Dmitry Torokhov | 1e0afb2 | 2006-06-26 01:48:47 -0400 | [diff] [blame] | 551 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 552 | case JS_SET_TIMEOUT: |
| 553 | return get_user(joydev->glue.JS_TIMEOUT, (s32 __user *) argp); |
Dmitry Torokhov | 1e0afb2 | 2006-06-26 01:48:47 -0400 | [diff] [blame] | 554 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 555 | case JS_GET_TIMEOUT: |
| 556 | return put_user(joydev->glue.JS_TIMEOUT, (s32 __user *) argp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 558 | case JSIOCGVERSION: |
| 559 | return put_user(JS_VERSION, (__u32 __user *) argp); |
Dmitry Torokhov | 1e0afb2 | 2006-06-26 01:48:47 -0400 | [diff] [blame] | 560 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 561 | case JSIOCGAXES: |
| 562 | return put_user(joydev->nabs, (__u8 __user *) argp); |
Dmitry Torokhov | 1e0afb2 | 2006-06-26 01:48:47 -0400 | [diff] [blame] | 563 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 564 | case JSIOCGBUTTONS: |
| 565 | return put_user(joydev->nkey, (__u8 __user *) argp); |
Dmitry Torokhov | 1e0afb2 | 2006-06-26 01:48:47 -0400 | [diff] [blame] | 566 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 567 | case JSIOCSCORR: |
| 568 | if (copy_from_user(joydev->corr, argp, |
| 569 | sizeof(joydev->corr[0]) * joydev->nabs)) |
Daniel Mack | 987a6c0 | 2010-08-02 20:15:17 -0700 | [diff] [blame] | 570 | return -EFAULT; |
Dmitry Torokhov | 1e0afb2 | 2006-06-26 01:48:47 -0400 | [diff] [blame] | 571 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 572 | for (i = 0; i < joydev->nabs; i++) { |
Daniel Mack | 987a6c0 | 2010-08-02 20:15:17 -0700 | [diff] [blame] | 573 | int val = input_abs_get_val(dev, joydev->abspam[i]); |
| 574 | joydev->abs[i] = joydev_correct(val, &joydev->corr[i]); |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 575 | } |
| 576 | return 0; |
Dmitry Torokhov | 1e0afb2 | 2006-06-26 01:48:47 -0400 | [diff] [blame] | 577 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 578 | case JSIOCGCORR: |
| 579 | return copy_to_user(argp, joydev->corr, |
| 580 | sizeof(joydev->corr[0]) * joydev->nabs) ? -EFAULT : 0; |
| 581 | |
Stephen Kitt | ec8b4b7 | 2009-08-12 01:12:08 -0700 | [diff] [blame] | 582 | } |
| 583 | |
| 584 | /* |
| 585 | * Process variable-sized commands (the axis and button map commands |
| 586 | * are considered variable-sized to decouple them from the values of |
| 587 | * ABS_MAX and KEY_MAX). |
| 588 | */ |
| 589 | switch (cmd & ~IOCSIZE_MASK) { |
| 590 | |
| 591 | case (JSIOCSAXMAP & ~IOCSIZE_MASK): |
Stephen Kitt | 999b874 | 2009-08-25 19:24:22 -0700 | [diff] [blame] | 592 | return joydev_handle_JSIOCSAXMAP(joydev, argp, _IOC_SIZE(cmd)); |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 593 | |
Stephen Kitt | ec8b4b7 | 2009-08-12 01:12:08 -0700 | [diff] [blame] | 594 | case (JSIOCGAXMAP & ~IOCSIZE_MASK): |
| 595 | len = min_t(size_t, _IOC_SIZE(cmd), sizeof(joydev->abspam)); |
Stephen Kitt | 999b874 | 2009-08-25 19:24:22 -0700 | [diff] [blame] | 596 | return copy_to_user(argp, joydev->abspam, len) ? -EFAULT : len; |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 597 | |
Stephen Kitt | ec8b4b7 | 2009-08-12 01:12:08 -0700 | [diff] [blame] | 598 | case (JSIOCSBTNMAP & ~IOCSIZE_MASK): |
Stephen Kitt | 999b874 | 2009-08-25 19:24:22 -0700 | [diff] [blame] | 599 | return joydev_handle_JSIOCSBTNMAP(joydev, argp, _IOC_SIZE(cmd)); |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 600 | |
Stephen Kitt | ec8b4b7 | 2009-08-12 01:12:08 -0700 | [diff] [blame] | 601 | case (JSIOCGBTNMAP & ~IOCSIZE_MASK): |
| 602 | len = min_t(size_t, _IOC_SIZE(cmd), sizeof(joydev->keypam)); |
Stephen Kitt | 999b874 | 2009-08-25 19:24:22 -0700 | [diff] [blame] | 603 | return copy_to_user(argp, joydev->keypam, len) ? -EFAULT : len; |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 604 | |
Stephen Kitt | ec8b4b7 | 2009-08-12 01:12:08 -0700 | [diff] [blame] | 605 | case JSIOCGNAME(0): |
| 606 | name = dev->name; |
| 607 | if (!name) |
| 608 | return 0; |
Thadeu Lima de Souza Cascardo | 3d5cb60 | 2009-05-09 16:08:04 -0700 | [diff] [blame] | 609 | |
Stephen Kitt | ec8b4b7 | 2009-08-12 01:12:08 -0700 | [diff] [blame] | 610 | len = min_t(size_t, _IOC_SIZE(cmd), strlen(name) + 1); |
| 611 | return copy_to_user(argp, name, len) ? -EFAULT : len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | } |
Stephen Kitt | ec8b4b7 | 2009-08-12 01:12:08 -0700 | [diff] [blame] | 613 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | return -EINVAL; |
| 615 | } |
| 616 | |
Jeremy Fitzhardinge | 024ac44 | 2005-05-29 02:26:31 -0500 | [diff] [blame] | 617 | #ifdef CONFIG_COMPAT |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 618 | static long joydev_compat_ioctl(struct file *file, |
| 619 | unsigned int cmd, unsigned long arg) |
Jeremy Fitzhardinge | 024ac44 | 2005-05-29 02:26:31 -0500 | [diff] [blame] | 620 | { |
Dmitry Torokhov | d0ffb9b | 2007-04-12 01:30:00 -0400 | [diff] [blame] | 621 | struct joydev_client *client = file->private_data; |
| 622 | struct joydev *joydev = client->joydev; |
Jeremy Fitzhardinge | 024ac44 | 2005-05-29 02:26:31 -0500 | [diff] [blame] | 623 | void __user *argp = (void __user *)arg; |
| 624 | s32 tmp32; |
| 625 | struct JS_DATA_SAVE_TYPE_32 ds32; |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 626 | int retval; |
Jeremy Fitzhardinge | 024ac44 | 2005-05-29 02:26:31 -0500 | [diff] [blame] | 627 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 628 | retval = mutex_lock_interruptible(&joydev->mutex); |
| 629 | if (retval) |
| 630 | return retval; |
Dmitry Torokhov | 1e0afb2 | 2006-06-26 01:48:47 -0400 | [diff] [blame] | 631 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 632 | if (!joydev->exist) { |
| 633 | retval = -ENODEV; |
| 634 | goto out; |
| 635 | } |
| 636 | |
| 637 | switch (cmd) { |
| 638 | |
Jeremy Fitzhardinge | 024ac44 | 2005-05-29 02:26:31 -0500 | [diff] [blame] | 639 | case JS_SET_TIMELIMIT: |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 640 | retval = get_user(tmp32, (s32 __user *) arg); |
| 641 | if (retval == 0) |
Jeremy Fitzhardinge | 024ac44 | 2005-05-29 02:26:31 -0500 | [diff] [blame] | 642 | joydev->glue.JS_TIMELIMIT = tmp32; |
| 643 | break; |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 644 | |
Jeremy Fitzhardinge | 024ac44 | 2005-05-29 02:26:31 -0500 | [diff] [blame] | 645 | case JS_GET_TIMELIMIT: |
| 646 | tmp32 = joydev->glue.JS_TIMELIMIT; |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 647 | retval = put_user(tmp32, (s32 __user *) arg); |
Jeremy Fitzhardinge | 024ac44 | 2005-05-29 02:26:31 -0500 | [diff] [blame] | 648 | break; |
| 649 | |
| 650 | case JS_SET_ALL: |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 651 | retval = copy_from_user(&ds32, argp, |
| 652 | sizeof(ds32)) ? -EFAULT : 0; |
| 653 | if (retval == 0) { |
Jeremy Fitzhardinge | 024ac44 | 2005-05-29 02:26:31 -0500 | [diff] [blame] | 654 | joydev->glue.JS_TIMEOUT = ds32.JS_TIMEOUT; |
| 655 | joydev->glue.BUSY = ds32.BUSY; |
| 656 | joydev->glue.JS_EXPIRETIME = ds32.JS_EXPIRETIME; |
| 657 | joydev->glue.JS_TIMELIMIT = ds32.JS_TIMELIMIT; |
| 658 | joydev->glue.JS_SAVE = ds32.JS_SAVE; |
| 659 | joydev->glue.JS_CORR = ds32.JS_CORR; |
| 660 | } |
| 661 | break; |
| 662 | |
| 663 | case JS_GET_ALL: |
| 664 | ds32.JS_TIMEOUT = joydev->glue.JS_TIMEOUT; |
| 665 | ds32.BUSY = joydev->glue.BUSY; |
| 666 | ds32.JS_EXPIRETIME = joydev->glue.JS_EXPIRETIME; |
| 667 | ds32.JS_TIMELIMIT = joydev->glue.JS_TIMELIMIT; |
| 668 | ds32.JS_SAVE = joydev->glue.JS_SAVE; |
| 669 | ds32.JS_CORR = joydev->glue.JS_CORR; |
| 670 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 671 | retval = copy_to_user(argp, &ds32, sizeof(ds32)) ? -EFAULT : 0; |
Jeremy Fitzhardinge | 024ac44 | 2005-05-29 02:26:31 -0500 | [diff] [blame] | 672 | break; |
| 673 | |
| 674 | default: |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 675 | retval = joydev_ioctl_common(joydev, cmd, argp); |
| 676 | break; |
Jeremy Fitzhardinge | 024ac44 | 2005-05-29 02:26:31 -0500 | [diff] [blame] | 677 | } |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 678 | |
| 679 | out: |
| 680 | mutex_unlock(&joydev->mutex); |
| 681 | return retval; |
Jeremy Fitzhardinge | 024ac44 | 2005-05-29 02:26:31 -0500 | [diff] [blame] | 682 | } |
| 683 | #endif /* CONFIG_COMPAT */ |
| 684 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 685 | static long joydev_ioctl(struct file *file, |
| 686 | unsigned int cmd, unsigned long arg) |
Jeremy Fitzhardinge | 024ac44 | 2005-05-29 02:26:31 -0500 | [diff] [blame] | 687 | { |
Dmitry Torokhov | d0ffb9b | 2007-04-12 01:30:00 -0400 | [diff] [blame] | 688 | struct joydev_client *client = file->private_data; |
| 689 | struct joydev *joydev = client->joydev; |
Jeremy Fitzhardinge | 024ac44 | 2005-05-29 02:26:31 -0500 | [diff] [blame] | 690 | void __user *argp = (void __user *)arg; |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 691 | int retval; |
Jeremy Fitzhardinge | 024ac44 | 2005-05-29 02:26:31 -0500 | [diff] [blame] | 692 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 693 | retval = mutex_lock_interruptible(&joydev->mutex); |
| 694 | if (retval) |
| 695 | return retval; |
Jeremy Fitzhardinge | 024ac44 | 2005-05-29 02:26:31 -0500 | [diff] [blame] | 696 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 697 | if (!joydev->exist) { |
| 698 | retval = -ENODEV; |
| 699 | goto out; |
Jeremy Fitzhardinge | 024ac44 | 2005-05-29 02:26:31 -0500 | [diff] [blame] | 700 | } |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 701 | |
| 702 | switch (cmd) { |
| 703 | |
| 704 | case JS_SET_TIMELIMIT: |
| 705 | retval = get_user(joydev->glue.JS_TIMELIMIT, |
| 706 | (long __user *) arg); |
| 707 | break; |
| 708 | |
| 709 | case JS_GET_TIMELIMIT: |
| 710 | retval = put_user(joydev->glue.JS_TIMELIMIT, |
| 711 | (long __user *) arg); |
| 712 | break; |
| 713 | |
| 714 | case JS_SET_ALL: |
| 715 | retval = copy_from_user(&joydev->glue, argp, |
| 716 | sizeof(joydev->glue)) ? -EFAULT: 0; |
| 717 | break; |
| 718 | |
| 719 | case JS_GET_ALL: |
| 720 | retval = copy_to_user(argp, &joydev->glue, |
| 721 | sizeof(joydev->glue)) ? -EFAULT : 0; |
| 722 | break; |
| 723 | |
| 724 | default: |
| 725 | retval = joydev_ioctl_common(joydev, cmd, argp); |
| 726 | break; |
| 727 | } |
| 728 | out: |
| 729 | mutex_unlock(&joydev->mutex); |
| 730 | return retval; |
Jeremy Fitzhardinge | 024ac44 | 2005-05-29 02:26:31 -0500 | [diff] [blame] | 731 | } |
| 732 | |
Dmitry Torokhov | 66e6611 | 2006-09-14 01:31:59 -0400 | [diff] [blame] | 733 | static const struct file_operations joydev_fops = { |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 734 | .owner = THIS_MODULE, |
| 735 | .read = joydev_read, |
| 736 | .poll = joydev_poll, |
| 737 | .open = joydev_open, |
| 738 | .release = joydev_release, |
| 739 | .unlocked_ioctl = joydev_ioctl, |
Jeremy Fitzhardinge | 024ac44 | 2005-05-29 02:26:31 -0500 | [diff] [blame] | 740 | #ifdef CONFIG_COMPAT |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 741 | .compat_ioctl = joydev_compat_ioctl, |
Jeremy Fitzhardinge | 024ac44 | 2005-05-29 02:26:31 -0500 | [diff] [blame] | 742 | #endif |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 743 | .fasync = joydev_fasync, |
Arnd Bergmann | 6038f37 | 2010-08-15 18:52:59 +0200 | [diff] [blame] | 744 | .llseek = no_llseek, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | }; |
| 746 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 747 | static int joydev_install_chrdev(struct joydev *joydev) |
| 748 | { |
| 749 | joydev_table[joydev->minor] = joydev; |
| 750 | return 0; |
| 751 | } |
| 752 | |
| 753 | static void joydev_remove_chrdev(struct joydev *joydev) |
| 754 | { |
| 755 | mutex_lock(&joydev_table_mutex); |
| 756 | joydev_table[joydev->minor] = NULL; |
| 757 | mutex_unlock(&joydev_table_mutex); |
| 758 | } |
| 759 | |
| 760 | /* |
| 761 | * Mark device non-existant. This disables writes, ioctls and |
| 762 | * prevents new users from opening the device. Already posted |
| 763 | * blocking reads will stay, however new ones will fail. |
| 764 | */ |
| 765 | static void joydev_mark_dead(struct joydev *joydev) |
| 766 | { |
| 767 | mutex_lock(&joydev->mutex); |
Dmitry Torokhov | 20da92d | 2010-07-15 23:27:36 -0700 | [diff] [blame] | 768 | joydev->exist = false; |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 769 | mutex_unlock(&joydev->mutex); |
| 770 | } |
| 771 | |
| 772 | static void joydev_cleanup(struct joydev *joydev) |
| 773 | { |
| 774 | struct input_handle *handle = &joydev->handle; |
| 775 | |
| 776 | joydev_mark_dead(joydev); |
| 777 | joydev_hangup(joydev); |
| 778 | joydev_remove_chrdev(joydev); |
| 779 | |
| 780 | /* joydev is marked dead so noone else accesses joydev->open */ |
| 781 | if (joydev->open) |
| 782 | input_close_device(handle); |
| 783 | } |
| 784 | |
Dmitry Torokhov | 0b7024ac | 2010-02-02 21:08:26 -0800 | [diff] [blame] | 785 | |
| 786 | static bool joydev_match(struct input_handler *handler, struct input_dev *dev) |
| 787 | { |
| 788 | /* Avoid touchpads and touchscreens */ |
| 789 | if (test_bit(EV_KEY, dev->evbit) && test_bit(BTN_TOUCH, dev->keybit)) |
| 790 | return false; |
| 791 | |
| 792 | /* Avoid tablets, digitisers and similar devices */ |
| 793 | if (test_bit(EV_KEY, dev->evbit) && test_bit(BTN_DIGI, dev->keybit)) |
| 794 | return false; |
| 795 | |
| 796 | return true; |
| 797 | } |
| 798 | |
Dmitry Torokhov | 5b2a082 | 2007-04-12 01:29:46 -0400 | [diff] [blame] | 799 | static int joydev_connect(struct input_handler *handler, struct input_dev *dev, |
| 800 | const struct input_device_id *id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | { |
| 802 | struct joydev *joydev; |
| 803 | int i, j, t, minor; |
Dmitry Torokhov | 5b2a082 | 2007-04-12 01:29:46 -0400 | [diff] [blame] | 804 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 806 | for (minor = 0; minor < JOYDEV_MINORS; minor++) |
| 807 | if (!joydev_table[minor]) |
| 808 | break; |
| 809 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | if (minor == JOYDEV_MINORS) { |
Joe Perches | da0c490 | 2010-11-29 23:33:07 -0800 | [diff] [blame] | 811 | pr_err("no more free joydev devices\n"); |
Dmitry Torokhov | 5b2a082 | 2007-04-12 01:29:46 -0400 | [diff] [blame] | 812 | return -ENFILE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | } |
| 814 | |
Dmitry Torokhov | 5b2a082 | 2007-04-12 01:29:46 -0400 | [diff] [blame] | 815 | joydev = kzalloc(sizeof(struct joydev), GFP_KERNEL); |
| 816 | if (!joydev) |
| 817 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 818 | |
Dmitry Torokhov | d0ffb9b | 2007-04-12 01:30:00 -0400 | [diff] [blame] | 819 | INIT_LIST_HEAD(&joydev->client_list); |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 820 | spin_lock_init(&joydev->client_lock); |
| 821 | mutex_init(&joydev->mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | init_waitqueue_head(&joydev->wait); |
| 823 | |
Thadeu Lima de Souza Cascardo | 3d5cb60 | 2009-05-09 16:08:04 -0700 | [diff] [blame] | 824 | dev_set_name(&joydev->dev, "js%d", minor); |
Dmitry Torokhov | 20da92d | 2010-07-15 23:27:36 -0700 | [diff] [blame] | 825 | joydev->exist = true; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | joydev->minor = minor; |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 827 | |
Dmitry Torokhov | a7097ff | 2008-04-01 00:22:53 -0400 | [diff] [blame] | 828 | joydev->handle.dev = input_get_device(dev); |
Thadeu Lima de Souza Cascardo | 3d5cb60 | 2009-05-09 16:08:04 -0700 | [diff] [blame] | 829 | joydev->handle.name = dev_name(&joydev->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | joydev->handle.handler = handler; |
| 831 | joydev->handle.private = joydev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | |
Daniel Mack | 81c2a3b | 2010-05-20 22:52:58 -0700 | [diff] [blame] | 833 | for (i = 0; i < ABS_CNT; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | if (test_bit(i, dev->absbit)) { |
| 835 | joydev->absmap[i] = joydev->nabs; |
| 836 | joydev->abspam[joydev->nabs] = i; |
| 837 | joydev->nabs++; |
| 838 | } |
| 839 | |
| 840 | for (i = BTN_JOYSTICK - BTN_MISC; i < KEY_MAX - BTN_MISC + 1; i++) |
| 841 | if (test_bit(i + BTN_MISC, dev->keybit)) { |
| 842 | joydev->keymap[i] = joydev->nkey; |
| 843 | joydev->keypam[joydev->nkey] = i + BTN_MISC; |
| 844 | joydev->nkey++; |
| 845 | } |
| 846 | |
Vojtech Pavlik | f24949e | 2005-05-28 02:11:49 -0500 | [diff] [blame] | 847 | for (i = 0; i < BTN_JOYSTICK - BTN_MISC; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | if (test_bit(i + BTN_MISC, dev->keybit)) { |
| 849 | joydev->keymap[i] = joydev->nkey; |
| 850 | joydev->keypam[joydev->nkey] = i + BTN_MISC; |
| 851 | joydev->nkey++; |
| 852 | } |
| 853 | |
| 854 | for (i = 0; i < joydev->nabs; i++) { |
| 855 | j = joydev->abspam[i]; |
Daniel Mack | 987a6c0 | 2010-08-02 20:15:17 -0700 | [diff] [blame] | 856 | if (input_abs_get_max(dev, j) == input_abs_get_min(dev, j)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | joydev->corr[i].type = JS_CORR_NONE; |
Daniel Mack | 987a6c0 | 2010-08-02 20:15:17 -0700 | [diff] [blame] | 858 | joydev->abs[i] = input_abs_get_val(dev, j); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | continue; |
| 860 | } |
| 861 | joydev->corr[i].type = JS_CORR_BROKEN; |
Daniel Mack | 987a6c0 | 2010-08-02 20:15:17 -0700 | [diff] [blame] | 862 | joydev->corr[i].prec = input_abs_get_fuzz(dev, j); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | |
Daniel Mack | 987a6c0 | 2010-08-02 20:15:17 -0700 | [diff] [blame] | 864 | t = (input_abs_get_max(dev, j) + input_abs_get_min(dev, j)) / 2; |
| 865 | joydev->corr[i].coef[0] = t - input_abs_get_flat(dev, j); |
| 866 | joydev->corr[i].coef[1] = t + input_abs_get_flat(dev, j); |
| 867 | |
| 868 | t = (input_abs_get_max(dev, j) - input_abs_get_min(dev, j)) / 2 |
| 869 | - 2 * input_abs_get_flat(dev, j); |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 870 | if (t) { |
| 871 | joydev->corr[i].coef[2] = (1 << 29) / t; |
| 872 | joydev->corr[i].coef[3] = (1 << 29) / t; |
| 873 | |
Daniel Mack | 987a6c0 | 2010-08-02 20:15:17 -0700 | [diff] [blame] | 874 | joydev->abs[i] = |
| 875 | joydev_correct(input_abs_get_val(dev, j), |
| 876 | joydev->corr + i); |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 877 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 878 | } |
| 879 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 880 | joydev->dev.devt = MKDEV(INPUT_MAJOR, JOYDEV_MINOR_BASE + minor); |
Dmitry Torokhov | 9657d75 | 2007-06-14 23:32:24 -0400 | [diff] [blame] | 881 | joydev->dev.class = &input_class; |
| 882 | joydev->dev.parent = &dev->dev; |
Dmitry Torokhov | 9657d75 | 2007-06-14 23:32:24 -0400 | [diff] [blame] | 883 | joydev->dev.release = joydev_free; |
| 884 | device_initialize(&joydev->dev); |
| 885 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 886 | error = input_register_handle(&joydev->handle); |
Dmitry Torokhov | 5b2a082 | 2007-04-12 01:29:46 -0400 | [diff] [blame] | 887 | if (error) |
Dmitry Torokhov | 9657d75 | 2007-06-14 23:32:24 -0400 | [diff] [blame] | 888 | goto err_free_joydev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 890 | error = joydev_install_chrdev(joydev); |
Dmitry Torokhov | 5b2a082 | 2007-04-12 01:29:46 -0400 | [diff] [blame] | 891 | if (error) |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 892 | goto err_unregister_handle; |
| 893 | |
| 894 | error = device_add(&joydev->dev); |
| 895 | if (error) |
| 896 | goto err_cleanup_joydev; |
Dmitry Torokhov | 5b2a082 | 2007-04-12 01:29:46 -0400 | [diff] [blame] | 897 | |
| 898 | return 0; |
| 899 | |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 900 | err_cleanup_joydev: |
| 901 | joydev_cleanup(joydev); |
| 902 | err_unregister_handle: |
| 903 | input_unregister_handle(&joydev->handle); |
Dmitry Torokhov | 5b2a082 | 2007-04-12 01:29:46 -0400 | [diff] [blame] | 904 | err_free_joydev: |
Dmitry Torokhov | 9657d75 | 2007-06-14 23:32:24 -0400 | [diff] [blame] | 905 | put_device(&joydev->dev); |
Dmitry Torokhov | 5b2a082 | 2007-04-12 01:29:46 -0400 | [diff] [blame] | 906 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | } |
| 908 | |
| 909 | static void joydev_disconnect(struct input_handle *handle) |
| 910 | { |
| 911 | struct joydev *joydev = handle->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 912 | |
Dmitry Torokhov | 9657d75 | 2007-06-14 23:32:24 -0400 | [diff] [blame] | 913 | device_del(&joydev->dev); |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 914 | joydev_cleanup(joydev); |
| 915 | input_unregister_handle(handle); |
Dmitry Torokhov | 9657d75 | 2007-06-14 23:32:24 -0400 | [diff] [blame] | 916 | put_device(&joydev->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | } |
| 918 | |
Dmitry Torokhov | 66e6611 | 2006-09-14 01:31:59 -0400 | [diff] [blame] | 919 | static const struct input_device_id joydev_ids[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | { |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 921 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | |
| 922 | INPUT_DEVICE_ID_MATCH_ABSBIT, |
Jiri Slaby | 7b19ada | 2007-10-18 23:40:32 -0700 | [diff] [blame] | 923 | .evbit = { BIT_MASK(EV_ABS) }, |
| 924 | .absbit = { BIT_MASK(ABS_X) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | }, |
| 926 | { |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 927 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | |
| 928 | INPUT_DEVICE_ID_MATCH_ABSBIT, |
Jiri Slaby | 7b19ada | 2007-10-18 23:40:32 -0700 | [diff] [blame] | 929 | .evbit = { BIT_MASK(EV_ABS) }, |
| 930 | .absbit = { BIT_MASK(ABS_WHEEL) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | }, |
| 932 | { |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 933 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | |
| 934 | INPUT_DEVICE_ID_MATCH_ABSBIT, |
Jiri Slaby | 7b19ada | 2007-10-18 23:40:32 -0700 | [diff] [blame] | 935 | .evbit = { BIT_MASK(EV_ABS) }, |
| 936 | .absbit = { BIT_MASK(ABS_THROTTLE) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | }, |
Christoph Fritz | 26a6931b | 2010-04-24 21:41:05 -0700 | [diff] [blame] | 938 | { |
| 939 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | |
| 940 | INPUT_DEVICE_ID_MATCH_KEYBIT, |
| 941 | .evbit = { BIT_MASK(EV_KEY) }, |
| 942 | .keybit = {[BIT_WORD(BTN_JOYSTICK)] = BIT_MASK(BTN_JOYSTICK) }, |
| 943 | }, |
| 944 | { |
| 945 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | |
| 946 | INPUT_DEVICE_ID_MATCH_KEYBIT, |
| 947 | .evbit = { BIT_MASK(EV_KEY) }, |
| 948 | .keybit = { [BIT_WORD(BTN_GAMEPAD)] = BIT_MASK(BTN_GAMEPAD) }, |
| 949 | }, |
| 950 | { |
| 951 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | |
| 952 | INPUT_DEVICE_ID_MATCH_KEYBIT, |
| 953 | .evbit = { BIT_MASK(EV_KEY) }, |
| 954 | .keybit = { [BIT_WORD(BTN_TRIGGER_HAPPY)] = BIT_MASK(BTN_TRIGGER_HAPPY) }, |
| 955 | }, |
Dmitry Torokhov | 1e0afb2 | 2006-06-26 01:48:47 -0400 | [diff] [blame] | 956 | { } /* Terminating entry */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | }; |
| 958 | |
| 959 | MODULE_DEVICE_TABLE(input, joydev_ids); |
| 960 | |
| 961 | static struct input_handler joydev_handler = { |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 962 | .event = joydev_event, |
Dmitry Torokhov | 0b7024ac | 2010-02-02 21:08:26 -0800 | [diff] [blame] | 963 | .match = joydev_match, |
Dmitry Torokhov | b126207 | 2007-08-30 00:22:32 -0400 | [diff] [blame] | 964 | .connect = joydev_connect, |
| 965 | .disconnect = joydev_disconnect, |
| 966 | .fops = &joydev_fops, |
| 967 | .minor = JOYDEV_MINOR_BASE, |
| 968 | .name = "joydev", |
| 969 | .id_table = joydev_ids, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | }; |
| 971 | |
| 972 | static int __init joydev_init(void) |
| 973 | { |
Dmitry Torokhov | 4263cf0 | 2006-09-14 01:32:39 -0400 | [diff] [blame] | 974 | return input_register_handler(&joydev_handler); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | } |
| 976 | |
| 977 | static void __exit joydev_exit(void) |
| 978 | { |
| 979 | input_unregister_handler(&joydev_handler); |
| 980 | } |
| 981 | |
| 982 | module_init(joydev_init); |
| 983 | module_exit(joydev_exit); |