xref: /openbmc/linux/drivers/hid/hid-input.c (revision 9ac8d3fb)
1 /*
2  *  Copyright (c) 2000-2001 Vojtech Pavlik
3  *  Copyright (c) 2006-2007 Jiri Kosina
4  *
5  *  HID to Linux Input mapping
6  */
7 
8 /*
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program; if not, write to the Free Software
21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22  *
23  * Should you need to contact me, the author, you can do so either by
24  * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
25  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
26  */
27 
28 #include <linux/module.h>
29 #include <linux/slab.h>
30 #include <linux/kernel.h>
31 
32 #include <linux/hid.h>
33 #include <linux/hid-debug.h>
34 
35 #define unk	KEY_UNKNOWN
36 
37 static const unsigned char hid_keyboard[256] = {
38 	  0,  0,  0,  0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
39 	 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44,  2,  3,
40 	  4,  5,  6,  7,  8,  9, 10, 11, 28,  1, 14, 15, 57, 12, 13, 26,
41 	 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
42 	 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
43 	105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
44 	 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
45 	191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
46 	115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
47 	122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
48 	unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
49 	unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,unk,unk,unk,
50 	unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
51 	unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
52 	 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
53 	150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
54 };
55 
56 static const struct {
57 	__s32 x;
58 	__s32 y;
59 }  hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
60 
61 #define map_abs(c)	hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c))
62 #define map_rel(c)	hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c))
63 #define map_key(c)	hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c))
64 #define map_led(c)	hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c))
65 
66 #define map_abs_clear(c)	hid_map_usage_clear(hidinput, usage, &bit, \
67 		&max, EV_ABS, (c))
68 #define map_key_clear(c)	hid_map_usage_clear(hidinput, usage, &bit, \
69 		&max, EV_KEY, (c))
70 
71 static inline int match_scancode(int code, int scancode)
72 {
73 	if (scancode == 0)
74 		return 1;
75 	return ((code & (HID_USAGE_PAGE | HID_USAGE)) == scancode);
76 }
77 
78 static inline int match_keycode(int code, int keycode)
79 {
80 	if (keycode == 0)
81 		return 1;
82 	return (code == keycode);
83 }
84 
85 static struct hid_usage *hidinput_find_key(struct hid_device *hid,
86 		int scancode, int keycode)
87 {
88 	int i, j, k;
89 	struct hid_report *report;
90 	struct hid_usage *usage;
91 
92 	for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
93 		list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
94 			for (i = 0; i < report->maxfield; i++) {
95 				for ( j = 0; j < report->field[i]->maxusage; j++) {
96 					usage = report->field[i]->usage + j;
97 					if (usage->type == EV_KEY &&
98 						match_scancode(usage->hid, scancode) &&
99 						match_keycode(usage->code, keycode))
100 						return usage;
101 				}
102 			}
103 		}
104 	}
105 	return NULL;
106 }
107 
108 static int hidinput_getkeycode(struct input_dev *dev, int scancode,
109 				int *keycode)
110 {
111 	struct hid_device *hid = input_get_drvdata(dev);
112 	struct hid_usage *usage;
113 
114 	usage = hidinput_find_key(hid, scancode, 0);
115 	if (usage) {
116 		*keycode = usage->code;
117 		return 0;
118 	}
119 	return -EINVAL;
120 }
121 
122 static int hidinput_setkeycode(struct input_dev *dev, int scancode,
123 				int keycode)
124 {
125 	struct hid_device *hid = input_get_drvdata(dev);
126 	struct hid_usage *usage;
127 	int old_keycode;
128 
129 	if (keycode < 0 || keycode > KEY_MAX)
130 		return -EINVAL;
131 
132 	usage = hidinput_find_key(hid, scancode, 0);
133 	if (usage) {
134 		old_keycode = usage->code;
135 		usage->code = keycode;
136 
137 		clear_bit(old_keycode, dev->keybit);
138 		set_bit(usage->code, dev->keybit);
139 		dbg_hid(KERN_DEBUG "Assigned keycode %d to HID usage code %x\n", keycode, scancode);
140 		/* Set the keybit for the old keycode if the old keycode is used
141 		 * by another key */
142 		if (hidinput_find_key (hid, 0, old_keycode))
143 			set_bit(old_keycode, dev->keybit);
144 
145 		return 0;
146 	}
147 
148 	return -EINVAL;
149 }
150 
151 
152 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
153 				     struct hid_usage *usage)
154 {
155 	struct input_dev *input = hidinput->input;
156 	struct hid_device *device = input_get_drvdata(input);
157 	int max = 0, code;
158 	unsigned long *bit = NULL;
159 
160 	field->hidinput = hidinput;
161 
162 	dbg_hid("Mapping: ");
163 	hid_resolv_usage(usage->hid);
164 	dbg_hid_line(" ---> ");
165 
166 	if (field->flags & HID_MAIN_ITEM_CONSTANT)
167 		goto ignore;
168 
169 	/* only LED usages are supported in output fields */
170 	if (field->report_type == HID_OUTPUT_REPORT &&
171 			(usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
172 		dbg_hid_line(" [non-LED output field] ");
173 		goto ignore;
174 	}
175 
176 	if (device->driver->input_mapping) {
177 		int ret = device->driver->input_mapping(device, hidinput, field,
178 				usage, &bit, &max);
179 		if (ret > 0)
180 			goto mapped;
181 		if (ret < 0)
182 			goto ignore;
183 	}
184 
185 	switch (usage->hid & HID_USAGE_PAGE) {
186 	case HID_UP_UNDEFINED:
187 		goto ignore;
188 
189 	case HID_UP_KEYBOARD:
190 		set_bit(EV_REP, input->evbit);
191 
192 		if ((usage->hid & HID_USAGE) < 256) {
193 			if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
194 			map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
195 		} else
196 			map_key(KEY_UNKNOWN);
197 
198 		break;
199 
200 	case HID_UP_BUTTON:
201 		code = ((usage->hid - 1) & 0xf);
202 
203 		switch (field->application) {
204 		case HID_GD_MOUSE:
205 		case HID_GD_POINTER:  code += 0x110; break;
206 		case HID_GD_JOYSTICK: code += 0x120; break;
207 		case HID_GD_GAMEPAD:  code += 0x130; break;
208 		default:
209 			switch (field->physical) {
210 			case HID_GD_MOUSE:
211 			case HID_GD_POINTER:  code += 0x110; break;
212 			case HID_GD_JOYSTICK: code += 0x120; break;
213 			case HID_GD_GAMEPAD:  code += 0x130; break;
214 			default:              code += 0x100;
215 			}
216 		}
217 
218 		map_key(code);
219 		break;
220 
221 	case HID_UP_SIMULATION:
222 		switch (usage->hid & 0xffff) {
223 		case 0xba: map_abs(ABS_RUDDER);   break;
224 		case 0xbb: map_abs(ABS_THROTTLE); break;
225 		case 0xc4: map_abs(ABS_GAS);      break;
226 		case 0xc5: map_abs(ABS_BRAKE);    break;
227 		case 0xc8: map_abs(ABS_WHEEL);    break;
228 		default:   goto ignore;
229 		}
230 		break;
231 
232 	case HID_UP_GENDESK:
233 		if ((usage->hid & 0xf0) == 0x80) {	/* SystemControl */
234 			switch (usage->hid & 0xf) {
235 			case 0x1: map_key_clear(KEY_POWER);  break;
236 			case 0x2: map_key_clear(KEY_SLEEP);  break;
237 			case 0x3: map_key_clear(KEY_WAKEUP); break;
238 			default: goto unknown;
239 			}
240 			break;
241 		}
242 
243 		if ((usage->hid & 0xf0) == 0x90) {	/* D-pad */
244 			switch (usage->hid) {
245 			case HID_GD_UP:	   usage->hat_dir = 1; break;
246 			case HID_GD_DOWN:  usage->hat_dir = 5; break;
247 			case HID_GD_RIGHT: usage->hat_dir = 3; break;
248 			case HID_GD_LEFT:  usage->hat_dir = 7; break;
249 			default: goto unknown;
250 			}
251 			if (field->dpad) {
252 				map_abs(field->dpad);
253 				goto ignore;
254 			}
255 			map_abs(ABS_HAT0X);
256 			break;
257 		}
258 
259 		switch (usage->hid) {
260 		/* These usage IDs map directly to the usage codes. */
261 		case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
262 		case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
263 		case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
264 			if (field->flags & HID_MAIN_ITEM_RELATIVE)
265 				map_rel(usage->hid & 0xf);
266 			else
267 				map_abs(usage->hid & 0xf);
268 			break;
269 
270 		case HID_GD_HATSWITCH:
271 			usage->hat_min = field->logical_minimum;
272 			usage->hat_max = field->logical_maximum;
273 			map_abs(ABS_HAT0X);
274 			break;
275 
276 		case HID_GD_START:	map_key_clear(BTN_START);	break;
277 		case HID_GD_SELECT:	map_key_clear(BTN_SELECT);	break;
278 
279 		default: goto unknown;
280 		}
281 
282 		break;
283 
284 	case HID_UP_LED:
285 		switch (usage->hid & 0xffff) {		      /* HID-Value:                   */
286 		case 0x01:  map_led (LED_NUML);     break;    /*   "Num Lock"                 */
287 		case 0x02:  map_led (LED_CAPSL);    break;    /*   "Caps Lock"                */
288 		case 0x03:  map_led (LED_SCROLLL);  break;    /*   "Scroll Lock"              */
289 		case 0x04:  map_led (LED_COMPOSE);  break;    /*   "Compose"                  */
290 		case 0x05:  map_led (LED_KANA);     break;    /*   "Kana"                     */
291 		case 0x27:  map_led (LED_SLEEP);    break;    /*   "Stand-By"                 */
292 		case 0x4c:  map_led (LED_SUSPEND);  break;    /*   "System Suspend"           */
293 		case 0x09:  map_led (LED_MUTE);     break;    /*   "Mute"                     */
294 		case 0x4b:  map_led (LED_MISC);     break;    /*   "Generic Indicator"        */
295 		case 0x19:  map_led (LED_MAIL);     break;    /*   "Message Waiting"          */
296 		case 0x4d:  map_led (LED_CHARGING); break;    /*   "External Power Connected" */
297 
298 		default: goto ignore;
299 		}
300 		break;
301 
302 	case HID_UP_DIGITIZER:
303 		switch (usage->hid & 0xff) {
304 		case 0x30: /* TipPressure */
305 			if (!test_bit(BTN_TOUCH, input->keybit)) {
306 				device->quirks |= HID_QUIRK_NOTOUCH;
307 				set_bit(EV_KEY, input->evbit);
308 				set_bit(BTN_TOUCH, input->keybit);
309 			}
310 			map_abs_clear(ABS_PRESSURE);
311 			break;
312 
313 		case 0x32: /* InRange */
314 			switch (field->physical & 0xff) {
315 			case 0x21: map_key(BTN_TOOL_MOUSE); break;
316 			case 0x22: map_key(BTN_TOOL_FINGER); break;
317 			default: map_key(BTN_TOOL_PEN); break;
318 			}
319 			break;
320 
321 		case 0x3c: /* Invert */
322 			map_key_clear(BTN_TOOL_RUBBER);
323 			break;
324 
325 		case 0x33: /* Touch */
326 		case 0x42: /* TipSwitch */
327 		case 0x43: /* TipSwitch2 */
328 			device->quirks &= ~HID_QUIRK_NOTOUCH;
329 			map_key_clear(BTN_TOUCH);
330 			break;
331 
332 		case 0x44: /* BarrelSwitch */
333 			map_key_clear(BTN_STYLUS);
334 			break;
335 
336 		default:  goto unknown;
337 		}
338 		break;
339 
340 	case HID_UP_CONSUMER:	/* USB HUT v1.1, pages 56-62 */
341 		switch (usage->hid & HID_USAGE) {
342 		case 0x000: goto ignore;
343 		case 0x034: map_key_clear(KEY_SLEEP);		break;
344 		case 0x036: map_key_clear(BTN_MISC);		break;
345 
346 		case 0x040: map_key_clear(KEY_MENU);		break;
347 		case 0x045: map_key_clear(KEY_RADIO);		break;
348 
349 		case 0x083: map_key_clear(KEY_LAST);		break;
350 		case 0x088: map_key_clear(KEY_PC);		break;
351 		case 0x089: map_key_clear(KEY_TV);		break;
352 		case 0x08a: map_key_clear(KEY_WWW);		break;
353 		case 0x08b: map_key_clear(KEY_DVD);		break;
354 		case 0x08c: map_key_clear(KEY_PHONE);		break;
355 		case 0x08d: map_key_clear(KEY_PROGRAM);		break;
356 		case 0x08e: map_key_clear(KEY_VIDEOPHONE);	break;
357 		case 0x08f: map_key_clear(KEY_GAMES);		break;
358 		case 0x090: map_key_clear(KEY_MEMO);		break;
359 		case 0x091: map_key_clear(KEY_CD);		break;
360 		case 0x092: map_key_clear(KEY_VCR);		break;
361 		case 0x093: map_key_clear(KEY_TUNER);		break;
362 		case 0x094: map_key_clear(KEY_EXIT);		break;
363 		case 0x095: map_key_clear(KEY_HELP);		break;
364 		case 0x096: map_key_clear(KEY_TAPE);		break;
365 		case 0x097: map_key_clear(KEY_TV2);		break;
366 		case 0x098: map_key_clear(KEY_SAT);		break;
367 		case 0x09a: map_key_clear(KEY_PVR);		break;
368 
369 		case 0x09c: map_key_clear(KEY_CHANNELUP);	break;
370 		case 0x09d: map_key_clear(KEY_CHANNELDOWN);	break;
371 		case 0x0a0: map_key_clear(KEY_VCR2);		break;
372 
373 		case 0x0b0: map_key_clear(KEY_PLAY);		break;
374 		case 0x0b1: map_key_clear(KEY_PAUSE);		break;
375 		case 0x0b2: map_key_clear(KEY_RECORD);		break;
376 		case 0x0b3: map_key_clear(KEY_FASTFORWARD);	break;
377 		case 0x0b4: map_key_clear(KEY_REWIND);		break;
378 		case 0x0b5: map_key_clear(KEY_NEXTSONG);	break;
379 		case 0x0b6: map_key_clear(KEY_PREVIOUSSONG);	break;
380 		case 0x0b7: map_key_clear(KEY_STOPCD);		break;
381 		case 0x0b8: map_key_clear(KEY_EJECTCD);		break;
382 		case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT);	break;
383 
384 		case 0x0cd: map_key_clear(KEY_PLAYPAUSE);	break;
385 		case 0x0e0: map_abs_clear(ABS_VOLUME);		break;
386 		case 0x0e2: map_key_clear(KEY_MUTE);		break;
387 		case 0x0e5: map_key_clear(KEY_BASSBOOST);	break;
388 		case 0x0e9: map_key_clear(KEY_VOLUMEUP);	break;
389 		case 0x0ea: map_key_clear(KEY_VOLUMEDOWN);	break;
390 
391 		case 0x182: map_key_clear(KEY_BOOKMARKS);	break;
392 		case 0x183: map_key_clear(KEY_CONFIG);		break;
393 		case 0x184: map_key_clear(KEY_WORDPROCESSOR);	break;
394 		case 0x185: map_key_clear(KEY_EDITOR);		break;
395 		case 0x186: map_key_clear(KEY_SPREADSHEET);	break;
396 		case 0x187: map_key_clear(KEY_GRAPHICSEDITOR);	break;
397 		case 0x188: map_key_clear(KEY_PRESENTATION);	break;
398 		case 0x189: map_key_clear(KEY_DATABASE);	break;
399 		case 0x18a: map_key_clear(KEY_MAIL);		break;
400 		case 0x18b: map_key_clear(KEY_NEWS);		break;
401 		case 0x18c: map_key_clear(KEY_VOICEMAIL);	break;
402 		case 0x18d: map_key_clear(KEY_ADDRESSBOOK);	break;
403 		case 0x18e: map_key_clear(KEY_CALENDAR);	break;
404 		case 0x191: map_key_clear(KEY_FINANCE);		break;
405 		case 0x192: map_key_clear(KEY_CALC);		break;
406 		case 0x194: map_key_clear(KEY_FILE);		break;
407 		case 0x196: map_key_clear(KEY_WWW);		break;
408 		case 0x19c: map_key_clear(KEY_LOGOFF);		break;
409 		case 0x19e: map_key_clear(KEY_COFFEE);		break;
410 		case 0x1a6: map_key_clear(KEY_HELP);		break;
411 		case 0x1a7: map_key_clear(KEY_DOCUMENTS);	break;
412 		case 0x1ab: map_key_clear(KEY_SPELLCHECK);	break;
413 		case 0x1b6: map_key_clear(KEY_MEDIA);		break;
414 		case 0x1b7: map_key_clear(KEY_SOUND);		break;
415 		case 0x1bc: map_key_clear(KEY_MESSENGER);	break;
416 		case 0x1bd: map_key_clear(KEY_INFO);		break;
417 		case 0x201: map_key_clear(KEY_NEW);		break;
418 		case 0x202: map_key_clear(KEY_OPEN);		break;
419 		case 0x203: map_key_clear(KEY_CLOSE);		break;
420 		case 0x204: map_key_clear(KEY_EXIT);		break;
421 		case 0x207: map_key_clear(KEY_SAVE);		break;
422 		case 0x208: map_key_clear(KEY_PRINT);		break;
423 		case 0x209: map_key_clear(KEY_PROPS);		break;
424 		case 0x21a: map_key_clear(KEY_UNDO);		break;
425 		case 0x21b: map_key_clear(KEY_COPY);		break;
426 		case 0x21c: map_key_clear(KEY_CUT);		break;
427 		case 0x21d: map_key_clear(KEY_PASTE);		break;
428 		case 0x21f: map_key_clear(KEY_FIND);		break;
429 		case 0x221: map_key_clear(KEY_SEARCH);		break;
430 		case 0x222: map_key_clear(KEY_GOTO);		break;
431 		case 0x223: map_key_clear(KEY_HOMEPAGE);	break;
432 		case 0x224: map_key_clear(KEY_BACK);		break;
433 		case 0x225: map_key_clear(KEY_FORWARD);		break;
434 		case 0x226: map_key_clear(KEY_STOP);		break;
435 		case 0x227: map_key_clear(KEY_REFRESH);		break;
436 		case 0x22a: map_key_clear(KEY_BOOKMARKS);	break;
437 		case 0x22d: map_key_clear(KEY_ZOOMIN);		break;
438 		case 0x22e: map_key_clear(KEY_ZOOMOUT);		break;
439 		case 0x22f: map_key_clear(KEY_ZOOMRESET);	break;
440 		case 0x233: map_key_clear(KEY_SCROLLUP);	break;
441 		case 0x234: map_key_clear(KEY_SCROLLDOWN);	break;
442 		case 0x238: map_rel(REL_HWHEEL);		break;
443 		case 0x25f: map_key_clear(KEY_CANCEL);		break;
444 		case 0x279: map_key_clear(KEY_REDO);		break;
445 
446 		case 0x289: map_key_clear(KEY_REPLY);		break;
447 		case 0x28b: map_key_clear(KEY_FORWARDMAIL);	break;
448 		case 0x28c: map_key_clear(KEY_SEND);		break;
449 
450 		default:    goto ignore;
451 		}
452 		break;
453 
454 	case HID_UP_HPVENDOR:	/* Reported on a Dutch layout HP5308 */
455 		set_bit(EV_REP, input->evbit);
456 		switch (usage->hid & HID_USAGE) {
457 		case 0x021: map_key_clear(KEY_PRINT);           break;
458 		case 0x070: map_key_clear(KEY_HP);		break;
459 		case 0x071: map_key_clear(KEY_CAMERA);		break;
460 		case 0x072: map_key_clear(KEY_SOUND);		break;
461 		case 0x073: map_key_clear(KEY_QUESTION);	break;
462 		case 0x080: map_key_clear(KEY_EMAIL);		break;
463 		case 0x081: map_key_clear(KEY_CHAT);		break;
464 		case 0x082: map_key_clear(KEY_SEARCH);		break;
465 		case 0x083: map_key_clear(KEY_CONNECT);	        break;
466 		case 0x084: map_key_clear(KEY_FINANCE);		break;
467 		case 0x085: map_key_clear(KEY_SPORT);		break;
468 		case 0x086: map_key_clear(KEY_SHOP);	        break;
469 		default:    goto ignore;
470 		}
471 		break;
472 
473 	case HID_UP_MSVENDOR:
474 		goto ignore;
475 
476 	case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
477 		set_bit(EV_REP, input->evbit);
478 		goto ignore;
479 
480 	case HID_UP_LOGIVENDOR:
481 		goto ignore;
482 
483 	case HID_UP_PID:
484 		switch (usage->hid & HID_USAGE) {
485 		case 0xa4: map_key_clear(BTN_DEAD);	break;
486 		default: goto ignore;
487 		}
488 		break;
489 
490 	default:
491 	unknown:
492 		if (field->report_size == 1) {
493 			if (field->report->type == HID_OUTPUT_REPORT) {
494 				map_led(LED_MISC);
495 				break;
496 			}
497 			map_key(BTN_MISC);
498 			break;
499 		}
500 		if (field->flags & HID_MAIN_ITEM_RELATIVE) {
501 			map_rel(REL_MISC);
502 			break;
503 		}
504 		map_abs(ABS_MISC);
505 		break;
506 	}
507 
508 mapped:
509 	if (device->driver->input_mapped && device->driver->input_mapped(device,
510 				hidinput, field, usage, &bit, &max) < 0)
511 		goto ignore;
512 
513 	set_bit(usage->type, input->evbit);
514 
515 	while (usage->code <= max && test_and_set_bit(usage->code, bit))
516 		usage->code = find_next_zero_bit(bit, max + 1, usage->code);
517 
518 	if (usage->code > max)
519 		goto ignore;
520 
521 
522 	if (usage->type == EV_ABS) {
523 
524 		int a = field->logical_minimum;
525 		int b = field->logical_maximum;
526 
527 		if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
528 			a = field->logical_minimum = 0;
529 			b = field->logical_maximum = 255;
530 		}
531 
532 		if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
533 			input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
534 		else	input_set_abs_params(input, usage->code, a, b, 0, 0);
535 
536 	}
537 
538 	if (usage->type == EV_ABS &&
539 	    (usage->hat_min < usage->hat_max || usage->hat_dir)) {
540 		int i;
541 		for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
542 			input_set_abs_params(input, i, -1, 1, 0, 0);
543 			set_bit(i, input->absbit);
544 		}
545 		if (usage->hat_dir && !field->dpad)
546 			field->dpad = usage->code;
547 	}
548 
549 	/* for those devices which produce Consumer volume usage as relative,
550 	 * we emulate pressing volumeup/volumedown appropriate number of times
551 	 * in hidinput_hid_event()
552 	 */
553 	if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
554 			(usage->code == ABS_VOLUME)) {
555 		set_bit(KEY_VOLUMEUP, input->keybit);
556 		set_bit(KEY_VOLUMEDOWN, input->keybit);
557 	}
558 
559 	if (usage->type == EV_KEY) {
560 		set_bit(EV_MSC, input->evbit);
561 		set_bit(MSC_SCAN, input->mscbit);
562 	}
563 
564 	hid_resolv_event(usage->type, usage->code);
565 
566 	dbg_hid_line("\n");
567 
568 	return;
569 
570 ignore:
571 	dbg_hid_line("IGNORED\n");
572 	return;
573 }
574 
575 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
576 {
577 	struct input_dev *input;
578 	unsigned *quirks = &hid->quirks;
579 
580 	if (!field->hidinput)
581 		return;
582 
583 	input = field->hidinput->input;
584 
585 	if (!usage->type)
586 		return;
587 
588 	if (usage->hat_min < usage->hat_max || usage->hat_dir) {
589 		int hat_dir = usage->hat_dir;
590 		if (!hat_dir)
591 			hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
592 		if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
593 		input_event(input, usage->type, usage->code    , hid_hat_to_axis[hat_dir].x);
594                 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
595                 return;
596         }
597 
598 	if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
599 		*quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
600 		return;
601 	}
602 
603 	if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
604 		if (value) {
605 			input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
606 			return;
607 		}
608 		input_event(input, usage->type, usage->code, 0);
609 		input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
610 		return;
611 	}
612 
613 	if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
614 		int a = field->logical_minimum;
615 		int b = field->logical_maximum;
616 		input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
617 	}
618 
619 	if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
620 		dbg_hid("Maximum Effects - %d\n",value);
621 		return;
622 	}
623 
624 	if (usage->hid == (HID_UP_PID | 0x7fUL)) {
625 		dbg_hid("PID Pool Report\n");
626 		return;
627 	}
628 
629 	if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
630 		return;
631 
632 	if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
633 			(usage->code == ABS_VOLUME)) {
634 		int count = abs(value);
635 		int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
636 		int i;
637 
638 		for (i = 0; i < count; i++) {
639 			input_event(input, EV_KEY, direction, 1);
640 			input_sync(input);
641 			input_event(input, EV_KEY, direction, 0);
642 			input_sync(input);
643 		}
644 		return;
645 	}
646 
647 	/* report the usage code as scancode if the key status has changed */
648 	if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value)
649 		input_event(input, EV_MSC, MSC_SCAN, usage->hid);
650 
651 	input_event(input, usage->type, usage->code, value);
652 
653 	if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
654 		input_event(input, usage->type, usage->code, 0);
655 }
656 
657 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
658 {
659 	struct hid_input *hidinput;
660 
661 	list_for_each_entry(hidinput, &hid->inputs, list)
662 		input_sync(hidinput->input);
663 }
664 EXPORT_SYMBOL_GPL(hidinput_report_event);
665 
666 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
667 {
668 	struct hid_report *report;
669 	int i, j;
670 
671 	list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
672 		for (i = 0; i < report->maxfield; i++) {
673 			*field = report->field[i];
674 			for (j = 0; j < (*field)->maxusage; j++)
675 				if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
676 					return j;
677 		}
678 	}
679 	return -1;
680 }
681 EXPORT_SYMBOL_GPL(hidinput_find_field);
682 
683 static int hidinput_open(struct input_dev *dev)
684 {
685 	struct hid_device *hid = input_get_drvdata(dev);
686 
687 	return hid->ll_driver->open(hid);
688 }
689 
690 static void hidinput_close(struct input_dev *dev)
691 {
692 	struct hid_device *hid = input_get_drvdata(dev);
693 
694 	hid->ll_driver->close(hid);
695 }
696 
697 /*
698  * Register the input device; print a message.
699  * Configure the input layer interface
700  * Read all reports and initialize the absolute field values.
701  */
702 
703 int hidinput_connect(struct hid_device *hid, unsigned int force)
704 {
705 	struct hid_report *report;
706 	struct hid_input *hidinput = NULL;
707 	struct input_dev *input_dev;
708 	int i, j, k;
709 	int max_report_type = HID_OUTPUT_REPORT;
710 
711 	INIT_LIST_HEAD(&hid->inputs);
712 
713 	if (!force) {
714 		for (i = 0; i < hid->maxcollection; i++) {
715 			struct hid_collection *col = &hid->collection[i];
716 			if (col->type == HID_COLLECTION_APPLICATION ||
717 					col->type == HID_COLLECTION_PHYSICAL)
718 				if (IS_INPUT_APPLICATION(col->usage))
719 					break;
720 		}
721 
722 		if (i == hid->maxcollection)
723 			return -1;
724 	}
725 
726 	if (hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
727 		max_report_type = HID_INPUT_REPORT;
728 
729 	for (k = HID_INPUT_REPORT; k <= max_report_type; k++)
730 		list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
731 
732 			if (!report->maxfield)
733 				continue;
734 
735 			if (!hidinput) {
736 				hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
737 				input_dev = input_allocate_device();
738 				if (!hidinput || !input_dev) {
739 					kfree(hidinput);
740 					input_free_device(input_dev);
741 					err_hid("Out of memory during hid input probe");
742 					goto out_unwind;
743 				}
744 
745 				input_set_drvdata(input_dev, hid);
746 				input_dev->event =
747 					hid->ll_driver->hidinput_input_event;
748 				input_dev->open = hidinput_open;
749 				input_dev->close = hidinput_close;
750 				input_dev->setkeycode = hidinput_setkeycode;
751 				input_dev->getkeycode = hidinput_getkeycode;
752 
753 				input_dev->name = hid->name;
754 				input_dev->phys = hid->phys;
755 				input_dev->uniq = hid->uniq;
756 				input_dev->id.bustype = hid->bus;
757 				input_dev->id.vendor  = hid->vendor;
758 				input_dev->id.product = hid->product;
759 				input_dev->id.version = hid->version;
760 				input_dev->dev.parent = hid->dev.parent;
761 				hidinput->input = input_dev;
762 				list_add_tail(&hidinput->list, &hid->inputs);
763 			}
764 
765 			for (i = 0; i < report->maxfield; i++)
766 				for (j = 0; j < report->field[i]->maxusage; j++)
767 					hidinput_configure_usage(hidinput, report->field[i],
768 								 report->field[i]->usage + j);
769 
770 			if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
771 				/* This will leave hidinput NULL, so that it
772 				 * allocates another one if we have more inputs on
773 				 * the same interface. Some devices (e.g. Happ's
774 				 * UGCI) cram a lot of unrelated inputs into the
775 				 * same interface. */
776 				hidinput->report = report;
777 				if (input_register_device(hidinput->input))
778 					goto out_cleanup;
779 				hidinput = NULL;
780 			}
781 		}
782 
783 	if (hidinput && input_register_device(hidinput->input))
784 		goto out_cleanup;
785 
786 	return 0;
787 
788 out_cleanup:
789 	input_free_device(hidinput->input);
790 	kfree(hidinput);
791 out_unwind:
792 	/* unwind the ones we already registered */
793 	hidinput_disconnect(hid);
794 
795 	return -1;
796 }
797 EXPORT_SYMBOL_GPL(hidinput_connect);
798 
799 void hidinput_disconnect(struct hid_device *hid)
800 {
801 	struct hid_input *hidinput, *next;
802 
803 	list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
804 		list_del(&hidinput->list);
805 		input_unregister_device(hidinput->input);
806 		kfree(hidinput);
807 	}
808 }
809 EXPORT_SYMBOL_GPL(hidinput_disconnect);
810 
811