1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2 | /* |
3 | * Copyright (c) 1999-2002 Vojtech Pavlik |
4 | */ |
5 | #ifndef _INPUT_H |
6 | #define _INPUT_H |
7 | |
8 | #include <linux/time.h> |
9 | #include <linux/list.h> |
10 | #include <uapi/linux/input.h> |
11 | /* Implementation details, userspace should not care about these */ |
12 | #define ABS_MT_FIRST ABS_MT_TOUCH_MAJOR |
13 | #define ABS_MT_LAST ABS_MT_TOOL_Y |
14 | |
15 | /* |
16 | * In-kernel definitions. |
17 | */ |
18 | |
19 | #include <linux/device.h> |
20 | #include <linux/fs.h> |
21 | #include <linux/timer.h> |
22 | #include <linux/mod_devicetable.h> |
23 | |
24 | struct input_dev_poller; |
25 | |
26 | /** |
27 | * struct input_value - input value representation |
28 | * @type: type of value (EV_KEY, EV_ABS, etc) |
29 | * @code: the value code |
30 | * @value: the value |
31 | */ |
32 | struct input_value { |
33 | __u16 type; |
34 | __u16 code; |
35 | __s32 value; |
36 | }; |
37 | |
38 | enum input_clock_type { |
39 | INPUT_CLK_REAL = 0, |
40 | INPUT_CLK_MONO, |
41 | INPUT_CLK_BOOT, |
42 | INPUT_CLK_MAX |
43 | }; |
44 | |
45 | /** |
46 | * struct input_dev - represents an input device |
47 | * @name: name of the device |
48 | * @phys: physical path to the device in the system hierarchy |
49 | * @uniq: unique identification code for the device (if device has it) |
50 | * @id: id of the device (struct input_id) |
51 | * @propbit: bitmap of device properties and quirks |
52 | * @evbit: bitmap of types of events supported by the device (EV_KEY, |
53 | * EV_REL, etc.) |
54 | * @keybit: bitmap of keys/buttons this device has |
55 | * @relbit: bitmap of relative axes for the device |
56 | * @absbit: bitmap of absolute axes for the device |
57 | * @mscbit: bitmap of miscellaneous events supported by the device |
58 | * @ledbit: bitmap of leds present on the device |
59 | * @sndbit: bitmap of sound effects supported by the device |
60 | * @ffbit: bitmap of force feedback effects supported by the device |
61 | * @swbit: bitmap of switches present on the device |
62 | * @hint_events_per_packet: average number of events generated by the |
63 | * device in a packet (between EV_SYN/SYN_REPORT events). Used by |
64 | * event handlers to estimate size of the buffer needed to hold |
65 | * events. |
66 | * @keycodemax: size of keycode table |
67 | * @keycodesize: size of elements in keycode table |
68 | * @keycode: map of scancodes to keycodes for this device |
69 | * @getkeycode: optional legacy method to retrieve current keymap. |
70 | * @setkeycode: optional method to alter current keymap, used to implement |
71 | * sparse keymaps. If not supplied default mechanism will be used. |
72 | * The method is being called while holding event_lock and thus must |
73 | * not sleep |
74 | * @ff: force feedback structure associated with the device if device |
75 | * supports force feedback effects |
76 | * @poller: poller structure associated with the device if device is |
77 | * set up to use polling mode |
78 | * @repeat_key: stores key code of the last key pressed; used to implement |
79 | * software autorepeat |
80 | * @timer: timer for software autorepeat |
81 | * @rep: current values for autorepeat parameters (delay, rate) |
82 | * @mt: pointer to multitouch state |
83 | * @absinfo: array of &struct input_absinfo elements holding information |
84 | * about absolute axes (current value, min, max, flat, fuzz, |
85 | * resolution) |
86 | * @key: reflects current state of device's keys/buttons |
87 | * @led: reflects current state of device's LEDs |
88 | * @snd: reflects current state of sound effects |
89 | * @sw: reflects current state of device's switches |
90 | * @open: this method is called when the very first user calls |
91 | * input_open_device(). The driver must prepare the device |
92 | * to start generating events (start polling thread, |
93 | * request an IRQ, submit URB, etc.). The meaning of open() is |
94 | * to start providing events to the input core. |
95 | * @close: this method is called when the very last user calls |
96 | * input_close_device(). The meaning of close() is to stop |
97 | * providing events to the input core. |
98 | * @flush: purges the device. Most commonly used to get rid of force |
99 | * feedback effects loaded into the device when disconnecting |
100 | * from it |
101 | * @event: event handler for events sent _to_ the device, like EV_LED |
102 | * or EV_SND. The device is expected to carry out the requested |
103 | * action (turn on a LED, play sound, etc.) The call is protected |
104 | * by @event_lock and must not sleep |
105 | * @grab: input handle that currently has the device grabbed (via |
106 | * EVIOCGRAB ioctl). When a handle grabs a device it becomes sole |
107 | * recipient for all input events coming from the device |
108 | * @event_lock: this spinlock is taken when input core receives |
109 | * and processes a new event for the device (in input_event()). |
110 | * Code that accesses and/or modifies parameters of a device |
111 | * (such as keymap or absmin, absmax, absfuzz, etc.) after device |
112 | * has been registered with input core must take this lock. |
113 | * @mutex: serializes calls to open(), close() and flush() methods |
114 | * @users: stores number of users (input handlers) that opened this |
115 | * device. It is used by input_open_device() and input_close_device() |
116 | * to make sure that dev->open() is only called when the first |
117 | * user opens device and dev->close() is called when the very |
118 | * last user closes the device |
119 | * @going_away: marks devices that are in a middle of unregistering and |
120 | * causes input_open_device*() fail with -ENODEV. |
121 | * @dev: driver model's view of this device |
122 | * @h_list: list of input handles associated with the device. When |
123 | * accessing the list dev->mutex must be held |
124 | * @node: used to place the device onto input_dev_list |
125 | * @num_vals: number of values queued in the current frame |
126 | * @max_vals: maximum number of values queued in a frame |
127 | * @vals: array of values queued in the current frame |
128 | * @devres_managed: indicates that devices is managed with devres framework |
129 | * and needs not be explicitly unregistered or freed. |
130 | * @timestamp: storage for a timestamp set by input_set_timestamp called |
131 | * by a driver |
132 | * @inhibited: indicates that the input device is inhibited. If that is |
133 | * the case then input core ignores any events generated by the device. |
134 | * Device's close() is called when it is being inhibited and its open() |
135 | * is called when it is being uninhibited. |
136 | */ |
137 | struct input_dev { |
138 | const char *name; |
139 | const char *phys; |
140 | const char *uniq; |
141 | struct input_id id; |
142 | |
143 | unsigned long propbit[BITS_TO_LONGS(INPUT_PROP_CNT)]; |
144 | |
145 | unsigned long evbit[BITS_TO_LONGS(EV_CNT)]; |
146 | unsigned long keybit[BITS_TO_LONGS(KEY_CNT)]; |
147 | unsigned long relbit[BITS_TO_LONGS(REL_CNT)]; |
148 | unsigned long absbit[BITS_TO_LONGS(ABS_CNT)]; |
149 | unsigned long mscbit[BITS_TO_LONGS(MSC_CNT)]; |
150 | unsigned long ledbit[BITS_TO_LONGS(LED_CNT)]; |
151 | unsigned long sndbit[BITS_TO_LONGS(SND_CNT)]; |
152 | unsigned long ffbit[BITS_TO_LONGS(FF_CNT)]; |
153 | unsigned long swbit[BITS_TO_LONGS(SW_CNT)]; |
154 | |
155 | unsigned int hint_events_per_packet; |
156 | |
157 | unsigned int keycodemax; |
158 | unsigned int keycodesize; |
159 | void *keycode; |
160 | |
161 | int (*setkeycode)(struct input_dev *dev, |
162 | const struct input_keymap_entry *ke, |
163 | unsigned int *old_keycode); |
164 | int (*getkeycode)(struct input_dev *dev, |
165 | struct input_keymap_entry *ke); |
166 | |
167 | struct ff_device *ff; |
168 | |
169 | struct input_dev_poller *poller; |
170 | |
171 | unsigned int repeat_key; |
172 | struct timer_list timer; |
173 | |
174 | int rep[REP_CNT]; |
175 | |
176 | struct input_mt *mt; |
177 | |
178 | struct input_absinfo *absinfo; |
179 | |
180 | unsigned long key[BITS_TO_LONGS(KEY_CNT)]; |
181 | unsigned long led[BITS_TO_LONGS(LED_CNT)]; |
182 | unsigned long snd[BITS_TO_LONGS(SND_CNT)]; |
183 | unsigned long sw[BITS_TO_LONGS(SW_CNT)]; |
184 | |
185 | int (*open)(struct input_dev *dev); |
186 | void (*close)(struct input_dev *dev); |
187 | int (*flush)(struct input_dev *dev, struct file *file); |
188 | int (*event)(struct input_dev *dev, unsigned int type, unsigned int code, int value); |
189 | |
190 | struct input_handle __rcu *grab; |
191 | |
192 | spinlock_t event_lock; |
193 | struct mutex mutex; |
194 | |
195 | unsigned int users; |
196 | bool going_away; |
197 | |
198 | struct device dev; |
199 | |
200 | struct list_head h_list; |
201 | struct list_head node; |
202 | |
203 | unsigned int num_vals; |
204 | unsigned int max_vals; |
205 | struct input_value *vals; |
206 | |
207 | bool devres_managed; |
208 | |
209 | ktime_t timestamp[INPUT_CLK_MAX]; |
210 | |
211 | bool inhibited; |
212 | }; |
213 | #define to_input_dev(d) container_of(d, struct input_dev, dev) |
214 | |
215 | /* |
216 | * Verify that we are in sync with input_device_id mod_devicetable.h #defines |
217 | */ |
218 | |
219 | #if EV_MAX != INPUT_DEVICE_ID_EV_MAX |
220 | #error "EV_MAX and INPUT_DEVICE_ID_EV_MAX do not match" |
221 | #endif |
222 | |
223 | #if KEY_MIN_INTERESTING != INPUT_DEVICE_ID_KEY_MIN_INTERESTING |
224 | #error "KEY_MIN_INTERESTING and INPUT_DEVICE_ID_KEY_MIN_INTERESTING do not match" |
225 | #endif |
226 | |
227 | #if KEY_MAX != INPUT_DEVICE_ID_KEY_MAX |
228 | #error "KEY_MAX and INPUT_DEVICE_ID_KEY_MAX do not match" |
229 | #endif |
230 | |
231 | #if REL_MAX != INPUT_DEVICE_ID_REL_MAX |
232 | #error "REL_MAX and INPUT_DEVICE_ID_REL_MAX do not match" |
233 | #endif |
234 | |
235 | #if ABS_MAX != INPUT_DEVICE_ID_ABS_MAX |
236 | #error "ABS_MAX and INPUT_DEVICE_ID_ABS_MAX do not match" |
237 | #endif |
238 | |
239 | #if MSC_MAX != INPUT_DEVICE_ID_MSC_MAX |
240 | #error "MSC_MAX and INPUT_DEVICE_ID_MSC_MAX do not match" |
241 | #endif |
242 | |
243 | #if LED_MAX != INPUT_DEVICE_ID_LED_MAX |
244 | #error "LED_MAX and INPUT_DEVICE_ID_LED_MAX do not match" |
245 | #endif |
246 | |
247 | #if SND_MAX != INPUT_DEVICE_ID_SND_MAX |
248 | #error "SND_MAX and INPUT_DEVICE_ID_SND_MAX do not match" |
249 | #endif |
250 | |
251 | #if FF_MAX != INPUT_DEVICE_ID_FF_MAX |
252 | #error "FF_MAX and INPUT_DEVICE_ID_FF_MAX do not match" |
253 | #endif |
254 | |
255 | #if SW_MAX != INPUT_DEVICE_ID_SW_MAX |
256 | #error "SW_MAX and INPUT_DEVICE_ID_SW_MAX do not match" |
257 | #endif |
258 | |
259 | #if INPUT_PROP_MAX != INPUT_DEVICE_ID_PROP_MAX |
260 | #error "INPUT_PROP_MAX and INPUT_DEVICE_ID_PROP_MAX do not match" |
261 | #endif |
262 | |
263 | #define INPUT_DEVICE_ID_MATCH_DEVICE \ |
264 | (INPUT_DEVICE_ID_MATCH_BUS | INPUT_DEVICE_ID_MATCH_VENDOR | INPUT_DEVICE_ID_MATCH_PRODUCT) |
265 | #define INPUT_DEVICE_ID_MATCH_DEVICE_AND_VERSION \ |
266 | (INPUT_DEVICE_ID_MATCH_DEVICE | INPUT_DEVICE_ID_MATCH_VERSION) |
267 | |
268 | struct input_handle; |
269 | |
270 | /** |
271 | * struct input_handler - implements one of interfaces for input devices |
272 | * @private: driver-specific data |
273 | * @event: event handler. This method is being called by input core with |
274 | * interrupts disabled and dev->event_lock spinlock held and so |
275 | * it may not sleep |
276 | * @events: event sequence handler. This method is being called by |
277 | * input core with interrupts disabled and dev->event_lock |
278 | * spinlock held and so it may not sleep |
279 | * @filter: similar to @event; separates normal event handlers from |
280 | * "filters". |
281 | * @match: called after comparing device's id with handler's id_table |
282 | * to perform fine-grained matching between device and handler |
283 | * @connect: called when attaching a handler to an input device |
284 | * @disconnect: disconnects a handler from input device |
285 | * @start: starts handler for given handle. This function is called by |
286 | * input core right after connect() method and also when a process |
287 | * that "grabbed" a device releases it |
288 | * @legacy_minors: set to %true by drivers using legacy minor ranges |
289 | * @minor: beginning of range of 32 legacy minors for devices this driver |
290 | * can provide |
291 | * @name: name of the handler, to be shown in /proc/bus/input/handlers |
292 | * @id_table: pointer to a table of input_device_ids this driver can |
293 | * handle |
294 | * @h_list: list of input handles associated with the handler |
295 | * @node: for placing the driver onto input_handler_list |
296 | * |
297 | * Input handlers attach to input devices and create input handles. There |
298 | * are likely several handlers attached to any given input device at the |
299 | * same time. All of them will get their copy of input event generated by |
300 | * the device. |
301 | * |
302 | * The very same structure is used to implement input filters. Input core |
303 | * allows filters to run first and will not pass event to regular handlers |
304 | * if any of the filters indicate that the event should be filtered (by |
305 | * returning %true from their filter() method). |
306 | * |
307 | * Note that input core serializes calls to connect() and disconnect() |
308 | * methods. |
309 | */ |
310 | struct input_handler { |
311 | |
312 | void *private; |
313 | |
314 | void (*event)(struct input_handle *handle, unsigned int type, unsigned int code, int value); |
315 | void (*events)(struct input_handle *handle, |
316 | const struct input_value *vals, unsigned int count); |
317 | bool (*filter)(struct input_handle *handle, unsigned int type, unsigned int code, int value); |
318 | bool (*match)(struct input_handler *handler, struct input_dev *dev); |
319 | int (*connect)(struct input_handler *handler, struct input_dev *dev, const struct input_device_id *id); |
320 | void (*disconnect)(struct input_handle *handle); |
321 | void (*start)(struct input_handle *handle); |
322 | |
323 | bool legacy_minors; |
324 | int minor; |
325 | const char *name; |
326 | |
327 | const struct input_device_id *id_table; |
328 | |
329 | struct list_head h_list; |
330 | struct list_head node; |
331 | }; |
332 | |
333 | /** |
334 | * struct input_handle - links input device with an input handler |
335 | * @private: handler-specific data |
336 | * @open: counter showing whether the handle is 'open', i.e. should deliver |
337 | * events from its device |
338 | * @name: name given to the handle by handler that created it |
339 | * @dev: input device the handle is attached to |
340 | * @handler: handler that works with the device through this handle |
341 | * @d_node: used to put the handle on device's list of attached handles |
342 | * @h_node: used to put the handle on handler's list of handles from which |
343 | * it gets events |
344 | */ |
345 | struct input_handle { |
346 | |
347 | void *private; |
348 | |
349 | int open; |
350 | const char *name; |
351 | |
352 | struct input_dev *dev; |
353 | struct input_handler *handler; |
354 | |
355 | struct list_head d_node; |
356 | struct list_head h_node; |
357 | }; |
358 | |
359 | struct input_dev __must_check *input_allocate_device(void); |
360 | struct input_dev __must_check *devm_input_allocate_device(struct device *); |
361 | void input_free_device(struct input_dev *dev); |
362 | |
363 | static inline struct input_dev *input_get_device(struct input_dev *dev) |
364 | { |
365 | return dev ? to_input_dev(get_device(&dev->dev)) : NULL; |
366 | } |
367 | |
368 | static inline void input_put_device(struct input_dev *dev) |
369 | { |
370 | if (dev) |
371 | put_device(dev: &dev->dev); |
372 | } |
373 | |
374 | static inline void *input_get_drvdata(struct input_dev *dev) |
375 | { |
376 | return dev_get_drvdata(dev: &dev->dev); |
377 | } |
378 | |
379 | static inline void input_set_drvdata(struct input_dev *dev, void *data) |
380 | { |
381 | dev_set_drvdata(dev: &dev->dev, data); |
382 | } |
383 | |
384 | int __must_check input_register_device(struct input_dev *); |
385 | void input_unregister_device(struct input_dev *); |
386 | |
387 | void input_reset_device(struct input_dev *); |
388 | |
389 | int input_setup_polling(struct input_dev *dev, |
390 | void (*poll_fn)(struct input_dev *dev)); |
391 | void input_set_poll_interval(struct input_dev *dev, unsigned int interval); |
392 | void input_set_min_poll_interval(struct input_dev *dev, unsigned int interval); |
393 | void input_set_max_poll_interval(struct input_dev *dev, unsigned int interval); |
394 | int input_get_poll_interval(struct input_dev *dev); |
395 | |
396 | int __must_check input_register_handler(struct input_handler *); |
397 | void input_unregister_handler(struct input_handler *); |
398 | |
399 | int __must_check input_get_new_minor(int legacy_base, unsigned int legacy_num, |
400 | bool allow_dynamic); |
401 | void input_free_minor(unsigned int minor); |
402 | |
403 | int input_handler_for_each_handle(struct input_handler *, void *data, |
404 | int (*fn)(struct input_handle *, void *)); |
405 | |
406 | int input_register_handle(struct input_handle *); |
407 | void input_unregister_handle(struct input_handle *); |
408 | |
409 | int input_grab_device(struct input_handle *); |
410 | void input_release_device(struct input_handle *); |
411 | |
412 | int input_open_device(struct input_handle *); |
413 | void input_close_device(struct input_handle *); |
414 | |
415 | int input_flush_device(struct input_handle *handle, struct file *file); |
416 | |
417 | void input_set_timestamp(struct input_dev *dev, ktime_t timestamp); |
418 | ktime_t *input_get_timestamp(struct input_dev *dev); |
419 | |
420 | void input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value); |
421 | void input_inject_event(struct input_handle *handle, unsigned int type, unsigned int code, int value); |
422 | |
423 | static inline void input_report_key(struct input_dev *dev, unsigned int code, int value) |
424 | { |
425 | input_event(dev, EV_KEY, code, value: !!value); |
426 | } |
427 | |
428 | static inline void input_report_rel(struct input_dev *dev, unsigned int code, int value) |
429 | { |
430 | input_event(dev, EV_REL, code, value); |
431 | } |
432 | |
433 | static inline void input_report_abs(struct input_dev *dev, unsigned int code, int value) |
434 | { |
435 | input_event(dev, EV_ABS, code, value); |
436 | } |
437 | |
438 | static inline void input_report_ff_status(struct input_dev *dev, unsigned int code, int value) |
439 | { |
440 | input_event(dev, EV_FF_STATUS, code, value); |
441 | } |
442 | |
443 | static inline void input_report_switch(struct input_dev *dev, unsigned int code, int value) |
444 | { |
445 | input_event(dev, EV_SW, code, value: !!value); |
446 | } |
447 | |
448 | static inline void input_sync(struct input_dev *dev) |
449 | { |
450 | input_event(dev, EV_SYN, SYN_REPORT, value: 0); |
451 | } |
452 | |
453 | static inline void input_mt_sync(struct input_dev *dev) |
454 | { |
455 | input_event(dev, EV_SYN, SYN_MT_REPORT, value: 0); |
456 | } |
457 | |
458 | void input_set_capability(struct input_dev *dev, unsigned int type, unsigned int code); |
459 | |
460 | /** |
461 | * input_set_events_per_packet - tell handlers about the driver event rate |
462 | * @dev: the input device used by the driver |
463 | * @n_events: the average number of events between calls to input_sync() |
464 | * |
465 | * If the event rate sent from a device is unusually large, use this |
466 | * function to set the expected event rate. This will allow handlers |
467 | * to set up an appropriate buffer size for the event stream, in order |
468 | * to minimize information loss. |
469 | */ |
470 | static inline void input_set_events_per_packet(struct input_dev *dev, int n_events) |
471 | { |
472 | dev->hint_events_per_packet = n_events; |
473 | } |
474 | |
475 | void input_alloc_absinfo(struct input_dev *dev); |
476 | void input_set_abs_params(struct input_dev *dev, unsigned int axis, |
477 | int min, int max, int fuzz, int flat); |
478 | void input_copy_abs(struct input_dev *dst, unsigned int dst_axis, |
479 | const struct input_dev *src, unsigned int src_axis); |
480 | |
481 | #define INPUT_GENERATE_ABS_ACCESSORS(_suffix, _item) \ |
482 | static inline int input_abs_get_##_suffix(struct input_dev *dev, \ |
483 | unsigned int axis) \ |
484 | { \ |
485 | return dev->absinfo ? dev->absinfo[axis]._item : 0; \ |
486 | } \ |
487 | \ |
488 | static inline void input_abs_set_##_suffix(struct input_dev *dev, \ |
489 | unsigned int axis, int val) \ |
490 | { \ |
491 | input_alloc_absinfo(dev); \ |
492 | if (dev->absinfo) \ |
493 | dev->absinfo[axis]._item = val; \ |
494 | } |
495 | |
496 | INPUT_GENERATE_ABS_ACCESSORS(val, value) |
497 | INPUT_GENERATE_ABS_ACCESSORS(min, minimum) |
498 | INPUT_GENERATE_ABS_ACCESSORS(max, maximum) |
499 | INPUT_GENERATE_ABS_ACCESSORS(fuzz, fuzz) |
500 | INPUT_GENERATE_ABS_ACCESSORS(flat, flat) |
501 | INPUT_GENERATE_ABS_ACCESSORS(res, resolution) |
502 | |
503 | int input_scancode_to_scalar(const struct input_keymap_entry *ke, |
504 | unsigned int *scancode); |
505 | |
506 | int input_get_keycode(struct input_dev *dev, struct input_keymap_entry *ke); |
507 | int input_set_keycode(struct input_dev *dev, |
508 | const struct input_keymap_entry *ke); |
509 | |
510 | bool input_match_device_id(const struct input_dev *dev, |
511 | const struct input_device_id *id); |
512 | |
513 | void input_enable_softrepeat(struct input_dev *dev, int delay, int period); |
514 | |
515 | bool input_device_enabled(struct input_dev *dev); |
516 | |
517 | extern struct class input_class; |
518 | |
519 | /** |
520 | * struct ff_device - force-feedback part of an input device |
521 | * @upload: Called to upload an new effect into device |
522 | * @erase: Called to erase an effect from device |
523 | * @playback: Called to request device to start playing specified effect |
524 | * @set_gain: Called to set specified gain |
525 | * @set_autocenter: Called to auto-center device |
526 | * @destroy: called by input core when parent input device is being |
527 | * destroyed |
528 | * @private: driver-specific data, will be freed automatically |
529 | * @ffbit: bitmap of force feedback capabilities truly supported by |
530 | * device (not emulated like ones in input_dev->ffbit) |
531 | * @mutex: mutex for serializing access to the device |
532 | * @max_effects: maximum number of effects supported by device |
533 | * @effects: pointer to an array of effects currently loaded into device |
534 | * @effect_owners: array of effect owners; when file handle owning |
535 | * an effect gets closed the effect is automatically erased |
536 | * |
537 | * Every force-feedback device must implement upload() and playback() |
538 | * methods; erase() is optional. set_gain() and set_autocenter() need |
539 | * only be implemented if driver sets up FF_GAIN and FF_AUTOCENTER |
540 | * bits. |
541 | * |
542 | * Note that playback(), set_gain() and set_autocenter() are called with |
543 | * dev->event_lock spinlock held and interrupts off and thus may not |
544 | * sleep. |
545 | */ |
546 | struct ff_device { |
547 | int (*upload)(struct input_dev *dev, struct ff_effect *effect, |
548 | struct ff_effect *old); |
549 | int (*erase)(struct input_dev *dev, int effect_id); |
550 | |
551 | int (*playback)(struct input_dev *dev, int effect_id, int value); |
552 | void (*set_gain)(struct input_dev *dev, u16 gain); |
553 | void (*set_autocenter)(struct input_dev *dev, u16 magnitude); |
554 | |
555 | void (*destroy)(struct ff_device *); |
556 | |
557 | void *private; |
558 | |
559 | unsigned long ffbit[BITS_TO_LONGS(FF_CNT)]; |
560 | |
561 | struct mutex mutex; |
562 | |
563 | int max_effects; |
564 | struct ff_effect *effects; |
565 | struct file *effect_owners[]; |
566 | }; |
567 | |
568 | int input_ff_create(struct input_dev *dev, unsigned int max_effects); |
569 | void input_ff_destroy(struct input_dev *dev); |
570 | |
571 | int input_ff_event(struct input_dev *dev, unsigned int type, unsigned int code, int value); |
572 | |
573 | int input_ff_upload(struct input_dev *dev, struct ff_effect *effect, struct file *file); |
574 | int input_ff_erase(struct input_dev *dev, int effect_id, struct file *file); |
575 | int input_ff_flush(struct input_dev *dev, struct file *file); |
576 | |
577 | int input_ff_create_memless(struct input_dev *dev, void *data, |
578 | int (*play_effect)(struct input_dev *, void *, struct ff_effect *)); |
579 | |
580 | #endif |
581 | |