Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Copyright (c) 1999-2002 Vojtech Pavlik | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License version 2 as published by | |
6 | * the Free Software Foundation. | |
7 | */ | |
607ca46e DH |
8 | #ifndef _INPUT_H |
9 | #define _INPUT_H | |
1da177e4 | 10 | |
1da177e4 LT |
11 | #include <linux/time.h> |
12 | #include <linux/list.h> | |
607ca46e | 13 | #include <uapi/linux/input.h> |
40d007e7 HR |
14 | /* Implementation details, userspace should not care about these */ |
15 | #define ABS_MT_FIRST ABS_MT_TOUCH_MAJOR | |
cab7faca | 16 | #define ABS_MT_LAST ABS_MT_TOOL_Y |
1da177e4 LT |
17 | |
18 | /* | |
19 | * In-kernel definitions. | |
20 | */ | |
21 | ||
ddc5d341 | 22 | #include <linux/device.h> |
1da177e4 LT |
23 | #include <linux/fs.h> |
24 | #include <linux/timer.h> | |
ddc5d341 | 25 | #include <linux/mod_devicetable.h> |
1da177e4 | 26 | |
4369c64c HR |
27 | /** |
28 | * struct input_value - input value representation | |
29 | * @type: type of value (EV_KEY, EV_ABS, etc) | |
30 | * @code: the value code | |
31 | * @value: the value | |
32 | */ | |
33 | struct input_value { | |
34 | __u16 type; | |
35 | __u16 code; | |
36 | __s32 value; | |
37 | }; | |
38 | ||
8006479c DT |
39 | /** |
40 | * struct input_dev - represents an input device | |
41 | * @name: name of the device | |
42 | * @phys: physical path to the device in the system hierarchy | |
43 | * @uniq: unique identification code for the device (if device has it) | |
44 | * @id: id of the device (struct input_id) | |
85b77200 | 45 | * @propbit: bitmap of device properties and quirks |
8006479c DT |
46 | * @evbit: bitmap of types of events supported by the device (EV_KEY, |
47 | * EV_REL, etc.) | |
48 | * @keybit: bitmap of keys/buttons this device has | |
49 | * @relbit: bitmap of relative axes for the device | |
50 | * @absbit: bitmap of absolute axes for the device | |
51 | * @mscbit: bitmap of miscellaneous events supported by the device | |
52 | * @ledbit: bitmap of leds present on the device | |
53 | * @sndbit: bitmap of sound effects supported by the device | |
54 | * @ffbit: bitmap of force feedback effects supported by the device | |
55 | * @swbit: bitmap of switches present on the device | |
63a6404d HR |
56 | * @hint_events_per_packet: average number of events generated by the |
57 | * device in a packet (between EV_SYN/SYN_REPORT events). Used by | |
58 | * event handlers to estimate size of the buffer needed to hold | |
59 | * events. | |
8006479c DT |
60 | * @keycodemax: size of keycode table |
61 | * @keycodesize: size of elements in keycode table | |
62 | * @keycode: map of scancodes to keycodes for this device | |
8613e4c2 | 63 | * @getkeycode: optional legacy method to retrieve current keymap. |
8006479c | 64 | * @setkeycode: optional method to alter current keymap, used to implement |
66d2a595 DT |
65 | * sparse keymaps. If not supplied default mechanism will be used. |
66 | * The method is being called while holding event_lock and thus must | |
67 | * not sleep | |
8006479c DT |
68 | * @ff: force feedback structure associated with the device if device |
69 | * supports force feedback effects | |
70 | * @repeat_key: stores key code of the last key pressed; used to implement | |
71 | * software autorepeat | |
72 | * @timer: timer for software autorepeat | |
8006479c | 73 | * @rep: current values for autorepeat parameters (delay, rate) |
8d18fba2 | 74 | * @mt: pointer to multitouch state |
86b17f76 | 75 | * @absinfo: array of &struct input_absinfo elements holding information |
d31b2865 DM |
76 | * about absolute axes (current value, min, max, flat, fuzz, |
77 | * resolution) | |
8006479c DT |
78 | * @key: reflects current state of device's keys/buttons |
79 | * @led: reflects current state of device's LEDs | |
80 | * @snd: reflects current state of sound effects | |
81 | * @sw: reflects current state of device's switches | |
8006479c DT |
82 | * @open: this method is called when the very first user calls |
83 | * input_open_device(). The driver must prepare the device | |
84 | * to start generating events (start polling thread, | |
85 | * request an IRQ, submit URB, etc.) | |
86 | * @close: this method is called when the very last user calls | |
87 | * input_close_device(). | |
88 | * @flush: purges the device. Most commonly used to get rid of force | |
89 | * feedback effects loaded into the device when disconnecting | |
90 | * from it | |
91 | * @event: event handler for events sent _to_ the device, like EV_LED | |
92 | * or EV_SND. The device is expected to carry out the requested | |
93 | * action (turn on a LED, play sound, etc.) The call is protected | |
94 | * by @event_lock and must not sleep | |
95 | * @grab: input handle that currently has the device grabbed (via | |
96 | * EVIOCGRAB ioctl). When a handle grabs a device it becomes sole | |
97 | * recipient for all input events coming from the device | |
83510e5f | 98 | * @event_lock: this spinlock is taken when input core receives |
8006479c DT |
99 | * and processes a new event for the device (in input_event()). |
100 | * Code that accesses and/or modifies parameters of a device | |
101 | * (such as keymap or absmin, absmax, absfuzz, etc.) after device | |
102 | * has been registered with input core must take this lock. | |
103 | * @mutex: serializes calls to open(), close() and flush() methods | |
104 | * @users: stores number of users (input handlers) that opened this | |
105 | * device. It is used by input_open_device() and input_close_device() | |
106 | * to make sure that dev->open() is only called when the first | |
107 | * user opens device and dev->close() is called when the very | |
108 | * last user closes the device | |
109 | * @going_away: marks devices that are in a middle of unregistering and | |
110 | * causes input_open_device*() fail with -ENODEV. | |
111 | * @dev: driver model's view of this device | |
112 | * @h_list: list of input handles associated with the device. When | |
113 | * accessing the list dev->mutex must be held | |
114 | * @node: used to place the device onto input_dev_list | |
800963fd HR |
115 | * @num_vals: number of values queued in the current frame |
116 | * @max_vals: maximum number of values queued in a frame | |
117 | * @vals: array of values queued in the current frame | |
2be975c6 DT |
118 | * @devres_managed: indicates that devices is managed with devres framework |
119 | * and needs not be explicitly unregistered or freed. | |
8006479c | 120 | */ |
1da177e4 | 121 | struct input_dev { |
5b6271bd DT |
122 | const char *name; |
123 | const char *phys; | |
124 | const char *uniq; | |
1da177e4 LT |
125 | struct input_id id; |
126 | ||
85b77200 HR |
127 | unsigned long propbit[BITS_TO_LONGS(INPUT_PROP_CNT)]; |
128 | ||
7b19ada2 JS |
129 | unsigned long evbit[BITS_TO_LONGS(EV_CNT)]; |
130 | unsigned long keybit[BITS_TO_LONGS(KEY_CNT)]; | |
131 | unsigned long relbit[BITS_TO_LONGS(REL_CNT)]; | |
132 | unsigned long absbit[BITS_TO_LONGS(ABS_CNT)]; | |
133 | unsigned long mscbit[BITS_TO_LONGS(MSC_CNT)]; | |
134 | unsigned long ledbit[BITS_TO_LONGS(LED_CNT)]; | |
135 | unsigned long sndbit[BITS_TO_LONGS(SND_CNT)]; | |
136 | unsigned long ffbit[BITS_TO_LONGS(FF_CNT)]; | |
137 | unsigned long swbit[BITS_TO_LONGS(SW_CNT)]; | |
1da177e4 | 138 | |
63a6404d HR |
139 | unsigned int hint_events_per_packet; |
140 | ||
1da177e4 LT |
141 | unsigned int keycodemax; |
142 | unsigned int keycodesize; | |
143 | void *keycode; | |
8613e4c2 | 144 | |
58b93995 | 145 | int (*setkeycode)(struct input_dev *dev, |
aebd636b DT |
146 | const struct input_keymap_entry *ke, |
147 | unsigned int *old_keycode); | |
58b93995 | 148 | int (*getkeycode)(struct input_dev *dev, |
aebd636b | 149 | struct input_keymap_entry *ke); |
1da177e4 | 150 | |
509ca1a9 AH |
151 | struct ff_device *ff; |
152 | ||
1da177e4 LT |
153 | unsigned int repeat_key; |
154 | struct timer_list timer; | |
155 | ||
d31b2865 | 156 | int rep[REP_CNT]; |
1da177e4 | 157 | |
8d18fba2 | 158 | struct input_mt *mt; |
40d007e7 | 159 | |
d31b2865 DM |
160 | struct input_absinfo *absinfo; |
161 | ||
7b19ada2 JS |
162 | unsigned long key[BITS_TO_LONGS(KEY_CNT)]; |
163 | unsigned long led[BITS_TO_LONGS(LED_CNT)]; | |
164 | unsigned long snd[BITS_TO_LONGS(SND_CNT)]; | |
165 | unsigned long sw[BITS_TO_LONGS(SW_CNT)]; | |
1da177e4 | 166 | |
1da177e4 LT |
167 | int (*open)(struct input_dev *dev); |
168 | void (*close)(struct input_dev *dev); | |
1da177e4 LT |
169 | int (*flush)(struct input_dev *dev, struct file *file); |
170 | int (*event)(struct input_dev *dev, unsigned int type, unsigned int code, int value); | |
1da177e4 | 171 | |
2be85279 | 172 | struct input_handle __rcu *grab; |
0fbf87ca | 173 | |
8006479c DT |
174 | spinlock_t event_lock; |
175 | struct mutex mutex; | |
176 | ||
0fbf87ca | 177 | unsigned int users; |
ffd0db97 | 178 | bool going_away; |
0fbf87ca | 179 | |
9657d75c | 180 | struct device dev; |
1da177e4 LT |
181 | |
182 | struct list_head h_list; | |
183 | struct list_head node; | |
4369c64c HR |
184 | |
185 | unsigned int num_vals; | |
186 | unsigned int max_vals; | |
187 | struct input_value *vals; | |
2be975c6 DT |
188 | |
189 | bool devres_managed; | |
1da177e4 | 190 | }; |
9657d75c | 191 | #define to_input_dev(d) container_of(d, struct input_dev, dev) |
1da177e4 | 192 | |
ddc5d341 DT |
193 | /* |
194 | * Verify that we are in sync with input_device_id mod_devicetable.h #defines | |
195 | */ | |
196 | ||
197 | #if EV_MAX != INPUT_DEVICE_ID_EV_MAX | |
198 | #error "EV_MAX and INPUT_DEVICE_ID_EV_MAX do not match" | |
199 | #endif | |
200 | ||
dc24f0e7 SR |
201 | #if KEY_MIN_INTERESTING != INPUT_DEVICE_ID_KEY_MIN_INTERESTING |
202 | #error "KEY_MIN_INTERESTING and INPUT_DEVICE_ID_KEY_MIN_INTERESTING do not match" | |
203 | #endif | |
204 | ||
ddc5d341 DT |
205 | #if KEY_MAX != INPUT_DEVICE_ID_KEY_MAX |
206 | #error "KEY_MAX and INPUT_DEVICE_ID_KEY_MAX do not match" | |
207 | #endif | |
208 | ||
209 | #if REL_MAX != INPUT_DEVICE_ID_REL_MAX | |
210 | #error "REL_MAX and INPUT_DEVICE_ID_REL_MAX do not match" | |
211 | #endif | |
212 | ||
213 | #if ABS_MAX != INPUT_DEVICE_ID_ABS_MAX | |
214 | #error "ABS_MAX and INPUT_DEVICE_ID_ABS_MAX do not match" | |
215 | #endif | |
216 | ||
217 | #if MSC_MAX != INPUT_DEVICE_ID_MSC_MAX | |
218 | #error "MSC_MAX and INPUT_DEVICE_ID_MSC_MAX do not match" | |
219 | #endif | |
220 | ||
221 | #if LED_MAX != INPUT_DEVICE_ID_LED_MAX | |
222 | #error "LED_MAX and INPUT_DEVICE_ID_LED_MAX do not match" | |
223 | #endif | |
224 | ||
225 | #if SND_MAX != INPUT_DEVICE_ID_SND_MAX | |
226 | #error "SND_MAX and INPUT_DEVICE_ID_SND_MAX do not match" | |
227 | #endif | |
228 | ||
229 | #if FF_MAX != INPUT_DEVICE_ID_FF_MAX | |
230 | #error "FF_MAX and INPUT_DEVICE_ID_FF_MAX do not match" | |
231 | #endif | |
232 | ||
233 | #if SW_MAX != INPUT_DEVICE_ID_SW_MAX | |
234 | #error "SW_MAX and INPUT_DEVICE_ID_SW_MAX do not match" | |
235 | #endif | |
236 | ||
8724ecb0 DT |
237 | #if INPUT_PROP_MAX != INPUT_DEVICE_ID_PROP_MAX |
238 | #error "INPUT_PROP_MAX and INPUT_DEVICE_ID_PROP_MAX do not match" | |
239 | #endif | |
240 | ||
ddc5d341 | 241 | #define INPUT_DEVICE_ID_MATCH_DEVICE \ |
1da177e4 | 242 | (INPUT_DEVICE_ID_MATCH_BUS | INPUT_DEVICE_ID_MATCH_VENDOR | INPUT_DEVICE_ID_MATCH_PRODUCT) |
ddc5d341 | 243 | #define INPUT_DEVICE_ID_MATCH_DEVICE_AND_VERSION \ |
1da177e4 LT |
244 | (INPUT_DEVICE_ID_MATCH_DEVICE | INPUT_DEVICE_ID_MATCH_VERSION) |
245 | ||
1da177e4 LT |
246 | struct input_handle; |
247 | ||
c7e8dc6e DT |
248 | /** |
249 | * struct input_handler - implements one of interfaces for input devices | |
250 | * @private: driver-specific data | |
8006479c DT |
251 | * @event: event handler. This method is being called by input core with |
252 | * interrupts disabled and dev->event_lock spinlock held and so | |
253 | * it may not sleep | |
4369c64c HR |
254 | * @events: event sequence handler. This method is being called by |
255 | * input core with interrupts disabled and dev->event_lock | |
256 | * spinlock held and so it may not sleep | |
ef7995f4 DT |
257 | * @filter: similar to @event; separates normal event handlers from |
258 | * "filters". | |
0b7024ac DT |
259 | * @match: called after comparing device's id with handler's id_table |
260 | * to perform fine-grained matching between device and handler | |
c7e8dc6e DT |
261 | * @connect: called when attaching a handler to an input device |
262 | * @disconnect: disconnects a handler from input device | |
263 | * @start: starts handler for given handle. This function is called by | |
264 | * input core right after connect() method and also when a process | |
265 | * that "grabbed" a device releases it | |
7f8d4cad DT |
266 | * @legacy_minors: set to %true by drivers using legacy minor ranges |
267 | * @minor: beginning of range of 32 legacy minors for devices this driver | |
c7e8dc6e DT |
268 | * can provide |
269 | * @name: name of the handler, to be shown in /proc/bus/input/handlers | |
270 | * @id_table: pointer to a table of input_device_ids this driver can | |
271 | * handle | |
c7e8dc6e DT |
272 | * @h_list: list of input handles associated with the handler |
273 | * @node: for placing the driver onto input_handler_list | |
8006479c DT |
274 | * |
275 | * Input handlers attach to input devices and create input handles. There | |
276 | * are likely several handlers attached to any given input device at the | |
277 | * same time. All of them will get their copy of input event generated by | |
278 | * the device. | |
279 | * | |
ef7995f4 DT |
280 | * The very same structure is used to implement input filters. Input core |
281 | * allows filters to run first and will not pass event to regular handlers | |
282 | * if any of the filters indicate that the event should be filtered (by | |
283 | * returning %true from their filter() method). | |
284 | * | |
8006479c DT |
285 | * Note that input core serializes calls to connect() and disconnect() |
286 | * methods. | |
c7e8dc6e | 287 | */ |
1da177e4 LT |
288 | struct input_handler { |
289 | ||
290 | void *private; | |
291 | ||
292 | void (*event)(struct input_handle *handle, unsigned int type, unsigned int code, int value); | |
4369c64c HR |
293 | void (*events)(struct input_handle *handle, |
294 | const struct input_value *vals, unsigned int count); | |
ef7995f4 | 295 | bool (*filter)(struct input_handle *handle, unsigned int type, unsigned int code, int value); |
0b7024ac | 296 | bool (*match)(struct input_handler *handler, struct input_dev *dev); |
5b2a0826 | 297 | int (*connect)(struct input_handler *handler, struct input_dev *dev, const struct input_device_id *id); |
1da177e4 | 298 | void (*disconnect)(struct input_handle *handle); |
c7e8dc6e | 299 | void (*start)(struct input_handle *handle); |
1da177e4 | 300 | |
7f8d4cad | 301 | bool legacy_minors; |
1da177e4 | 302 | int minor; |
66e66118 | 303 | const char *name; |
1da177e4 | 304 | |
66e66118 | 305 | const struct input_device_id *id_table; |
1da177e4 LT |
306 | |
307 | struct list_head h_list; | |
308 | struct list_head node; | |
309 | }; | |
310 | ||
8006479c DT |
311 | /** |
312 | * struct input_handle - links input device with an input handler | |
313 | * @private: handler-specific data | |
314 | * @open: counter showing whether the handle is 'open', i.e. should deliver | |
315 | * events from its device | |
316 | * @name: name given to the handle by handler that created it | |
317 | * @dev: input device the handle is attached to | |
318 | * @handler: handler that works with the device through this handle | |
319 | * @d_node: used to put the handle on device's list of attached handles | |
320 | * @h_node: used to put the handle on handler's list of handles from which | |
321 | * it gets events | |
322 | */ | |
1da177e4 LT |
323 | struct input_handle { |
324 | ||
325 | void *private; | |
326 | ||
327 | int open; | |
66e66118 | 328 | const char *name; |
1da177e4 LT |
329 | |
330 | struct input_dev *dev; | |
331 | struct input_handler *handler; | |
332 | ||
333 | struct list_head d_node; | |
334 | struct list_head h_node; | |
335 | }; | |
336 | ||
2be975c6 DT |
337 | struct input_dev __must_check *input_allocate_device(void); |
338 | struct input_dev __must_check *devm_input_allocate_device(struct device *); | |
f60d2b11 | 339 | void input_free_device(struct input_dev *dev); |
d19fbe8a | 340 | |
d19fbe8a DT |
341 | static inline struct input_dev *input_get_device(struct input_dev *dev) |
342 | { | |
a7097ff8 | 343 | return dev ? to_input_dev(get_device(&dev->dev)) : NULL; |
d19fbe8a DT |
344 | } |
345 | ||
346 | static inline void input_put_device(struct input_dev *dev) | |
347 | { | |
a7097ff8 DT |
348 | if (dev) |
349 | put_device(&dev->dev); | |
d19fbe8a DT |
350 | } |
351 | ||
3abccf36 DT |
352 | static inline void *input_get_drvdata(struct input_dev *dev) |
353 | { | |
3797fec1 | 354 | return dev_get_drvdata(&dev->dev); |
3abccf36 DT |
355 | } |
356 | ||
357 | static inline void input_set_drvdata(struct input_dev *dev, void *data) | |
358 | { | |
3797fec1 | 359 | dev_set_drvdata(&dev->dev, data); |
3abccf36 DT |
360 | } |
361 | ||
501cc54c | 362 | int __must_check input_register_device(struct input_dev *); |
1da177e4 LT |
363 | void input_unregister_device(struct input_dev *); |
364 | ||
b50b5216 DT |
365 | void input_reset_device(struct input_dev *); |
366 | ||
501cc54c | 367 | int __must_check input_register_handler(struct input_handler *); |
1da177e4 LT |
368 | void input_unregister_handler(struct input_handler *); |
369 | ||
7f8d4cad DT |
370 | int __must_check input_get_new_minor(int legacy_base, unsigned int legacy_num, |
371 | bool allow_dynamic); | |
372 | void input_free_minor(unsigned int minor); | |
373 | ||
66d2a595 DT |
374 | int input_handler_for_each_handle(struct input_handler *, void *data, |
375 | int (*fn)(struct input_handle *, void *)); | |
376 | ||
5b2a0826 DT |
377 | int input_register_handle(struct input_handle *); |
378 | void input_unregister_handle(struct input_handle *); | |
379 | ||
1da177e4 LT |
380 | int input_grab_device(struct input_handle *); |
381 | void input_release_device(struct input_handle *); | |
382 | ||
383 | int input_open_device(struct input_handle *); | |
384 | void input_close_device(struct input_handle *); | |
385 | ||
b50b5216 | 386 | int input_flush_device(struct input_handle *handle, struct file *file); |
1da177e4 LT |
387 | |
388 | void input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value); | |
0e739d28 | 389 | void input_inject_event(struct input_handle *handle, unsigned int type, unsigned int code, int value); |
1da177e4 LT |
390 | |
391 | static inline void input_report_key(struct input_dev *dev, unsigned int code, int value) | |
392 | { | |
393 | input_event(dev, EV_KEY, code, !!value); | |
394 | } | |
395 | ||
396 | static inline void input_report_rel(struct input_dev *dev, unsigned int code, int value) | |
397 | { | |
398 | input_event(dev, EV_REL, code, value); | |
399 | } | |
400 | ||
401 | static inline void input_report_abs(struct input_dev *dev, unsigned int code, int value) | |
402 | { | |
403 | input_event(dev, EV_ABS, code, value); | |
404 | } | |
405 | ||
1da177e4 LT |
406 | static inline void input_report_ff_status(struct input_dev *dev, unsigned int code, int value) |
407 | { | |
408 | input_event(dev, EV_FF_STATUS, code, value); | |
409 | } | |
410 | ||
31581066 RP |
411 | static inline void input_report_switch(struct input_dev *dev, unsigned int code, int value) |
412 | { | |
413 | input_event(dev, EV_SW, code, !!value); | |
414 | } | |
415 | ||
1da177e4 LT |
416 | static inline void input_sync(struct input_dev *dev) |
417 | { | |
418 | input_event(dev, EV_SYN, SYN_REPORT, 0); | |
1da177e4 LT |
419 | } |
420 | ||
5e5ee686 HR |
421 | static inline void input_mt_sync(struct input_dev *dev) |
422 | { | |
423 | input_event(dev, EV_SYN, SYN_MT_REPORT, 0); | |
424 | } | |
425 | ||
534565f2 DT |
426 | void input_set_capability(struct input_dev *dev, unsigned int type, unsigned int code); |
427 | ||
63a6404d HR |
428 | /** |
429 | * input_set_events_per_packet - tell handlers about the driver event rate | |
430 | * @dev: the input device used by the driver | |
431 | * @n_events: the average number of events between calls to input_sync() | |
432 | * | |
433 | * If the event rate sent from a device is unusually large, use this | |
434 | * function to set the expected event rate. This will allow handlers | |
435 | * to set up an appropriate buffer size for the event stream, in order | |
436 | * to minimize information loss. | |
437 | */ | |
438 | static inline void input_set_events_per_packet(struct input_dev *dev, int n_events) | |
439 | { | |
440 | dev->hint_events_per_packet = n_events; | |
441 | } | |
442 | ||
d31b2865 DM |
443 | void input_alloc_absinfo(struct input_dev *dev); |
444 | void input_set_abs_params(struct input_dev *dev, unsigned int axis, | |
445 | int min, int max, int fuzz, int flat); | |
1da177e4 | 446 | |
7957e9c4 DM |
447 | #define INPUT_GENERATE_ABS_ACCESSORS(_suffix, _item) \ |
448 | static inline int input_abs_get_##_suffix(struct input_dev *dev, \ | |
449 | unsigned int axis) \ | |
450 | { \ | |
d31b2865 | 451 | return dev->absinfo ? dev->absinfo[axis]._item : 0; \ |
7957e9c4 DM |
452 | } \ |
453 | \ | |
454 | static inline void input_abs_set_##_suffix(struct input_dev *dev, \ | |
455 | unsigned int axis, int val) \ | |
456 | { \ | |
d31b2865 DM |
457 | input_alloc_absinfo(dev); \ |
458 | if (dev->absinfo) \ | |
459 | dev->absinfo[axis]._item = val; \ | |
7957e9c4 DM |
460 | } |
461 | ||
d31b2865 DM |
462 | INPUT_GENERATE_ABS_ACCESSORS(val, value) |
463 | INPUT_GENERATE_ABS_ACCESSORS(min, minimum) | |
464 | INPUT_GENERATE_ABS_ACCESSORS(max, maximum) | |
7957e9c4 DM |
465 | INPUT_GENERATE_ABS_ACCESSORS(fuzz, fuzz) |
466 | INPUT_GENERATE_ABS_ACCESSORS(flat, flat) | |
d31b2865 | 467 | INPUT_GENERATE_ABS_ACCESSORS(res, resolution) |
7957e9c4 | 468 | |
8613e4c2 MCC |
469 | int input_scancode_to_scalar(const struct input_keymap_entry *ke, |
470 | unsigned int *scancode); | |
471 | ||
472 | int input_get_keycode(struct input_dev *dev, struct input_keymap_entry *ke); | |
58b93995 | 473 | int input_set_keycode(struct input_dev *dev, |
8613e4c2 | 474 | const struct input_keymap_entry *ke); |
f4f37c8e | 475 | |
55dfce87 DT |
476 | bool input_match_device_id(const struct input_dev *dev, |
477 | const struct input_device_id *id); | |
478 | ||
027c71bb PG |
479 | void input_enable_softrepeat(struct input_dev *dev, int delay, int period); |
480 | ||
ea9f240b | 481 | extern struct class input_class; |
1da177e4 | 482 | |
509ca1a9 AH |
483 | /** |
484 | * struct ff_device - force-feedback part of an input device | |
485 | * @upload: Called to upload an new effect into device | |
486 | * @erase: Called to erase an effect from device | |
487 | * @playback: Called to request device to start playing specified effect | |
488 | * @set_gain: Called to set specified gain | |
489 | * @set_autocenter: Called to auto-center device | |
490 | * @destroy: called by input core when parent input device is being | |
491 | * destroyed | |
492 | * @private: driver-specific data, will be freed automatically | |
493 | * @ffbit: bitmap of force feedback capabilities truly supported by | |
494 | * device (not emulated like ones in input_dev->ffbit) | |
495 | * @mutex: mutex for serializing access to the device | |
496 | * @max_effects: maximum number of effects supported by device | |
497 | * @effects: pointer to an array of effects currently loaded into device | |
498 | * @effect_owners: array of effect owners; when file handle owning | |
8006479c | 499 | * an effect gets closed the effect is automatically erased |
509ca1a9 AH |
500 | * |
501 | * Every force-feedback device must implement upload() and playback() | |
502 | * methods; erase() is optional. set_gain() and set_autocenter() need | |
503 | * only be implemented if driver sets up FF_GAIN and FF_AUTOCENTER | |
504 | * bits. | |
bf3204cb DT |
505 | * |
506 | * Note that playback(), set_gain() and set_autocenter() are called with | |
507 | * dev->event_lock spinlock held and interrupts off and thus may not | |
508 | * sleep. | |
509ca1a9 AH |
509 | */ |
510 | struct ff_device { | |
511 | int (*upload)(struct input_dev *dev, struct ff_effect *effect, | |
512 | struct ff_effect *old); | |
513 | int (*erase)(struct input_dev *dev, int effect_id); | |
514 | ||
515 | int (*playback)(struct input_dev *dev, int effect_id, int value); | |
516 | void (*set_gain)(struct input_dev *dev, u16 gain); | |
517 | void (*set_autocenter)(struct input_dev *dev, u16 magnitude); | |
518 | ||
519 | void (*destroy)(struct ff_device *); | |
520 | ||
521 | void *private; | |
522 | ||
7b19ada2 | 523 | unsigned long ffbit[BITS_TO_LONGS(FF_CNT)]; |
509ca1a9 AH |
524 | |
525 | struct mutex mutex; | |
526 | ||
527 | int max_effects; | |
528 | struct ff_effect *effects; | |
529 | struct file *effect_owners[]; | |
530 | }; | |
531 | ||
05be8b81 | 532 | int input_ff_create(struct input_dev *dev, unsigned int max_effects); |
509ca1a9 AH |
533 | void input_ff_destroy(struct input_dev *dev); |
534 | ||
535 | int input_ff_event(struct input_dev *dev, unsigned int type, unsigned int code, int value); | |
536 | ||
537 | int input_ff_upload(struct input_dev *dev, struct ff_effect *effect, struct file *file); | |
538 | int input_ff_erase(struct input_dev *dev, int effect_id, struct file *file); | |
e8b95728 | 539 | int input_ff_flush(struct input_dev *dev, struct file *file); |
509ca1a9 | 540 | |
7d928a2b AH |
541 | int input_ff_create_memless(struct input_dev *dev, void *data, |
542 | int (*play_effect)(struct input_dev *, void *, struct ff_effect *)); | |
543 | ||
1da177e4 | 544 | #endif |