xref: /linux/drivers/hid/hid-lenovo.c (revision 7a7e0197133d18cfd9931e7d3a842d0f5730223f)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *  HID driver for Lenovo:
4  *  - ThinkPad USB Keyboard with TrackPoint (tpkbd)
5  *  - ThinkPad Compact Bluetooth Keyboard with TrackPoint (cptkbd)
6  *  - ThinkPad Compact USB Keyboard with TrackPoint (cptkbd)
7  *  - ThinkPad TrackPoint Keyboard II USB/Bluetooth (cptkbd/tpIIkbd)
8  *
9  *  Copyright (c) 2012 Bernhard Seibold
10  *  Copyright (c) 2014 Jamie Lentin <jm@lentin.co.uk>
11  *
12  * Linux IBM/Lenovo Scrollpoint mouse driver:
13  * - IBM Scrollpoint III
14  * - IBM Scrollpoint Pro
15  * - IBM Scrollpoint Optical
16  * - IBM Scrollpoint Optical 800dpi
17  * - IBM Scrollpoint Optical 800dpi Pro
18  * - Lenovo Scrollpoint Optical
19  *
20  *  Copyright (c) 2012 Peter De Wachter <pdewacht@gmail.com>
21  *  Copyright (c) 2018 Peter Ganzhorn <peter.ganzhorn@gmail.com>
22  */
23 
24 /*
25  */
26 
27 #include <linux/module.h>
28 #include <linux/sysfs.h>
29 #include <linux/device.h>
30 #include <linux/hid.h>
31 #include <linux/input.h>
32 #include <linux/leds.h>
33 #include <linux/workqueue.h>
34 
35 #include <linux/platform_profile.h>
36 
37 #include "hid-ids.h"
38 
39 /* Userspace expects F20 for mic-mute KEY_MICMUTE does not work */
40 #define LENOVO_KEY_MICMUTE KEY_F20
41 
42 /* HID raw events for ThinkPad X12 Tabs*/
43 #define TP_X12_RAW_HOTKEY_FN_F4		0x00020003
44 #define TP_X12_RAW_HOTKEY_FN_F8		0x38001003
45 #define TP_X12_RAW_HOTKEY_FN_F10	0x00000803
46 #define TP_X12_RAW_HOTKEY_FN_F12	0x00000403
47 #define TP_X12_RAW_HOTKEY_FN_SPACE	0x18001003
48 
49 struct lenovo_drvdata {
50 	u8 led_report[3]; /* Must be first for proper alignment */
51 	int led_state;
52 	struct mutex led_report_mutex;
53 	struct led_classdev led_mute;
54 	struct led_classdev led_micmute;
55 	struct work_struct fn_lock_sync_work;
56 	struct hid_device *hdev;
57 	int press_to_select;
58 	int dragging;
59 	int release_to_select;
60 	int select_right;
61 	int sensitivity;
62 	int press_speed;
63 	/* 0: Up
64 	 * 1: Down (undecided)
65 	 * 2: Scrolling
66 	 */
67 	u8 middlebutton_state;
68 	bool fn_lock;
69 	bool middleclick_workaround_cptkbd;
70 };
71 
72 #define map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c))
73 
74 #define TP10UBKBD_LED_OUTPUT_REPORT	9
75 
76 #define TP10UBKBD_FN_LOCK_LED		0x54
77 #define TP10UBKBD_MUTE_LED		0x64
78 #define TP10UBKBD_MICMUTE_LED		0x74
79 
80 #define TP10UBKBD_LED_OFF		1
81 #define TP10UBKBD_LED_ON		2
82 
83 /* Function to report raw_events as key events*/
report_key_event(struct input_dev * input,int keycode)84 static inline void report_key_event(struct input_dev *input, int keycode)
85 {
86 	input_report_key(input, keycode, 1);
87 	input_report_key(input, keycode, 0);
88 	input_sync(input);
89 }
90 
lenovo_led_set_tp10ubkbd(struct hid_device * hdev,u8 led_code,enum led_brightness value)91 static int lenovo_led_set_tp10ubkbd(struct hid_device *hdev, u8 led_code,
92 				    enum led_brightness value)
93 {
94 	struct lenovo_drvdata *data = hid_get_drvdata(hdev);
95 	int ret;
96 
97 	mutex_lock(&data->led_report_mutex);
98 
99 	data->led_report[0] = TP10UBKBD_LED_OUTPUT_REPORT;
100 	data->led_report[1] = led_code;
101 	data->led_report[2] = value ? TP10UBKBD_LED_ON : TP10UBKBD_LED_OFF;
102 	ret = hid_hw_raw_request(hdev, data->led_report[0], data->led_report, 3,
103 				 HID_OUTPUT_REPORT, HID_REQ_SET_REPORT);
104 	if (ret != 3) {
105 		if (ret != -ENODEV)
106 			hid_err(hdev, "Set LED output report error: %d\n", ret);
107 
108 		ret = ret < 0 ? ret : -EIO;
109 	} else {
110 		ret = 0;
111 	}
112 
113 	mutex_unlock(&data->led_report_mutex);
114 
115 	return ret;
116 }
117 
lenovo_tp10ubkbd_sync_fn_lock(struct work_struct * work)118 static void lenovo_tp10ubkbd_sync_fn_lock(struct work_struct *work)
119 {
120 	struct lenovo_drvdata *data =
121 		container_of(work, struct lenovo_drvdata, fn_lock_sync_work);
122 
123 	lenovo_led_set_tp10ubkbd(data->hdev, TP10UBKBD_FN_LOCK_LED,
124 				 data->fn_lock);
125 }
126 
127 static const __u8 lenovo_pro_dock_need_fixup_collection[] = {
128 	0x05, 0x88,		/* Usage Page (Vendor Usage Page 0x88)	*/
129 	0x09, 0x01,		/* Usage (Vendor Usage 0x01)		*/
130 	0xa1, 0x01,		/* Collection (Application)		*/
131 	0x85, 0x04,		/*  Report ID (4)			*/
132 	0x19, 0x00,		/*  Usage Minimum (0)			*/
133 	0x2a, 0xff, 0xff,	/*  Usage Maximum (65535)		*/
134 };
135 
136 /* Broken ThinkPad TrackPoint II collection (Bluetooth mode) */
137 static const __u8 lenovo_tpIIbtkbd_need_fixup_collection[] = {
138 	0x06, 0x00, 0xFF,	/* Usage Page (Vendor Defined 0xFF00) */
139 	0x09, 0x01,		/* Usage (0x01) */
140 	0xA1, 0x01,		/* Collection (Application) */
141 	0x85, 0x05,		/*   Report ID (5) */
142 	0x1A, 0xF1, 0x00,	/*   Usage Minimum (0xF1) */
143 	0x2A, 0xFC, 0x00,	/*   Usage Maximum (0xFC) */
144 	0x15, 0x00,		/*   Logical Minimum (0) */
145 	0x25, 0x01,		/*   Logical Maximum (1) */
146 	0x75, 0x01,		/*   Report Size (1) */
147 	0x95, 0x0D,		/*   Report Count (13) */
148 	0x81, 0x02,		/*   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position) */
149 	0x95, 0x03,		/*   Report Count (3) */
150 	0x81, 0x01,		/*   Input (Const,Array,Abs,No Wrap,Linear,Preferred State,No Null Position) */
151 };
152 
lenovo_report_fixup(struct hid_device * hdev,__u8 * rdesc,unsigned int * rsize)153 static const __u8 *lenovo_report_fixup(struct hid_device *hdev, __u8 *rdesc,
154 		unsigned int *rsize)
155 {
156 	switch (hdev->product) {
157 	case USB_DEVICE_ID_LENOVO_TPPRODOCK:
158 		/* the fixups that need to be done:
159 		 *   - get a reasonable usage max for the vendor collection
160 		 *     0x8801 from the report ID 4
161 		 */
162 		if (*rsize >= 153 &&
163 		    memcmp(&rdesc[140], lenovo_pro_dock_need_fixup_collection,
164 			  sizeof(lenovo_pro_dock_need_fixup_collection)) == 0) {
165 			rdesc[151] = 0x01;
166 			rdesc[152] = 0x00;
167 		}
168 		break;
169 	case USB_DEVICE_ID_LENOVO_TPIIBTKBD:
170 		if (*rsize >= 263 &&
171 		    memcmp(&rdesc[234], lenovo_tpIIbtkbd_need_fixup_collection,
172 			  sizeof(lenovo_tpIIbtkbd_need_fixup_collection)) == 0) {
173 			rdesc[244] = 0x00; /* usage minimum = 0x00 */
174 			rdesc[247] = 0xff; /* usage maximum = 0xff */
175 			rdesc[252] = 0xff; /* logical maximum = 0xff */
176 			rdesc[254] = 0x08; /* report size = 0x08 */
177 			rdesc[256] = 0x01; /* report count = 0x01 */
178 			rdesc[258] = 0x00; /* input = 0x00 */
179 			rdesc[260] = 0x01; /* report count (2) = 0x01 */
180 		}
181 		break;
182 	}
183 	return rdesc;
184 }
185 
lenovo_input_mapping_tpkbd(struct hid_device * hdev,struct hid_input * hi,struct hid_field * field,struct hid_usage * usage,unsigned long ** bit,int * max)186 static int lenovo_input_mapping_tpkbd(struct hid_device *hdev,
187 		struct hid_input *hi, struct hid_field *field,
188 		struct hid_usage *usage, unsigned long **bit, int *max)
189 {
190 	if (usage->hid == (HID_UP_BUTTON | 0x0010)) {
191 		/* This sub-device contains trackpoint, mark it */
192 		hid_set_drvdata(hdev, (void *)1);
193 		map_key_clear(LENOVO_KEY_MICMUTE);
194 		return 1;
195 	}
196 	return 0;
197 }
198 
lenovo_input_mapping_cptkbd(struct hid_device * hdev,struct hid_input * hi,struct hid_field * field,struct hid_usage * usage,unsigned long ** bit,int * max)199 static int lenovo_input_mapping_cptkbd(struct hid_device *hdev,
200 		struct hid_input *hi, struct hid_field *field,
201 		struct hid_usage *usage, unsigned long **bit, int *max)
202 {
203 	/* HID_UP_LNVENDOR = USB, HID_UP_MSVENDOR = BT */
204 	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR ||
205 	    (usage->hid & HID_USAGE_PAGE) == HID_UP_LNVENDOR) {
206 		switch (usage->hid & HID_USAGE) {
207 		case 0x00f1: /* Fn-F4: Mic mute */
208 			map_key_clear(LENOVO_KEY_MICMUTE);
209 			return 1;
210 		case 0x00f2: /* Fn-F5: Brightness down */
211 			map_key_clear(KEY_BRIGHTNESSDOWN);
212 			return 1;
213 		case 0x00f3: /* Fn-F6: Brightness up */
214 			map_key_clear(KEY_BRIGHTNESSUP);
215 			return 1;
216 		case 0x00f4: /* Fn-F7: External display (projector) */
217 			map_key_clear(KEY_SWITCHVIDEOMODE);
218 			return 1;
219 		case 0x00f5: /* Fn-F8: Wireless */
220 			map_key_clear(KEY_WLAN);
221 			return 1;
222 		case 0x00f6: /* Fn-F9: Control panel */
223 			map_key_clear(KEY_CONFIG);
224 			return 1;
225 		case 0x00f8: /* Fn-F11: View open applications (3 boxes) */
226 			map_key_clear(KEY_SCALE);
227 			return 1;
228 		case 0x00f9: /* Fn-F12: Open My computer (6 boxes) USB-only */
229 			/* NB: This mapping is invented in raw_event below */
230 			map_key_clear(KEY_FILE);
231 			return 1;
232 		case 0x00fa: /* Fn-Esc: Fn-lock toggle */
233 			map_key_clear(KEY_FN_ESC);
234 			return 1;
235 		case 0x00fb: /* Middle mouse button (in native mode) */
236 			map_key_clear(BTN_MIDDLE);
237 			return 1;
238 		}
239 	}
240 
241 	/* Compatibility middle/wheel mappings should be ignored */
242 	if (usage->hid == HID_GD_WHEEL)
243 		return -1;
244 	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON &&
245 			(usage->hid & HID_USAGE) == 0x003)
246 		return -1;
247 	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER &&
248 			(usage->hid & HID_USAGE) == 0x238)
249 		return -1;
250 
251 	/* Map wheel emulation reports: 0xffa1 = USB, 0xff10 = BT */
252 	if ((usage->hid & HID_USAGE_PAGE) == 0xff100000 ||
253 	    (usage->hid & HID_USAGE_PAGE) == 0xffa10000) {
254 		field->flags |= HID_MAIN_ITEM_RELATIVE | HID_MAIN_ITEM_VARIABLE;
255 		field->logical_minimum = -127;
256 		field->logical_maximum = 127;
257 
258 		switch (usage->hid & HID_USAGE) {
259 		case 0x0000:
260 			hid_map_usage(hi, usage, bit, max, EV_REL, REL_HWHEEL);
261 			return 1;
262 		case 0x0001:
263 			hid_map_usage(hi, usage, bit, max, EV_REL, REL_WHEEL);
264 			return 1;
265 		default:
266 			return -1;
267 		}
268 	}
269 
270 	return 0;
271 }
272 
lenovo_input_mapping_tpIIkbd(struct hid_device * hdev,struct hid_input * hi,struct hid_field * field,struct hid_usage * usage,unsigned long ** bit,int * max)273 static int lenovo_input_mapping_tpIIkbd(struct hid_device *hdev,
274 		struct hid_input *hi, struct hid_field *field,
275 		struct hid_usage *usage, unsigned long **bit, int *max)
276 {
277 	/*
278 	 * 0xff0a0000 = USB, HID_UP_MSVENDOR = BT.
279 	 *
280 	 * In BT mode, there are two HID_UP_MSVENDOR pages.
281 	 * Use only the page that contains report ID == 5.
282 	 */
283 	if (((usage->hid & HID_USAGE_PAGE) == 0xff0a0000 ||
284 	    (usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR) &&
285 	    field->report->id == 5) {
286 		switch (usage->hid & HID_USAGE) {
287 		case 0x00bb: /* Fn-F4: Mic mute */
288 			map_key_clear(LENOVO_KEY_MICMUTE);
289 			return 1;
290 		case 0x00c3: /* Fn-F5: Brightness down */
291 			map_key_clear(KEY_BRIGHTNESSDOWN);
292 			return 1;
293 		case 0x00c4: /* Fn-F6: Brightness up */
294 			map_key_clear(KEY_BRIGHTNESSUP);
295 			return 1;
296 		case 0x00c1: /* Fn-F8: Notification center */
297 			map_key_clear(KEY_NOTIFICATION_CENTER);
298 			return 1;
299 		case 0x00bc: /* Fn-F9: Control panel */
300 			map_key_clear(KEY_CONFIG);
301 			return 1;
302 		case 0x00b6: /* Fn-F10: Bluetooth */
303 			map_key_clear(KEY_BLUETOOTH);
304 			return 1;
305 		case 0x00b7: /* Fn-F11: Keyboard config */
306 			map_key_clear(KEY_KEYBOARD);
307 			return 1;
308 		case 0x00b8: /* Fn-F12: User function */
309 			map_key_clear(KEY_PROG1);
310 			return 1;
311 		case 0x00b9: /* Fn-PrtSc: Snipping tool */
312 			map_key_clear(KEY_SELECTIVE_SCREENSHOT);
313 			return 1;
314 		case 0x00b5: /* Fn-Esc: Fn-lock toggle */
315 			map_key_clear(KEY_FN_ESC);
316 			return 1;
317 		}
318 	}
319 
320 	if ((usage->hid & HID_USAGE_PAGE) == 0xffa00000) {
321 		switch (usage->hid & HID_USAGE) {
322 		case 0x00fb: /* Middle mouse (in native USB mode) */
323 			map_key_clear(BTN_MIDDLE);
324 			return 1;
325 		}
326 	}
327 
328 	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR &&
329 	    field->report->id == 21) {
330 		switch (usage->hid & HID_USAGE) {
331 		case 0x0004: /* Middle mouse (in native Bluetooth mode) */
332 			map_key_clear(BTN_MIDDLE);
333 			return 1;
334 		}
335 	}
336 
337 	/* Compatibility middle/wheel mappings should be ignored */
338 	if (usage->hid == HID_GD_WHEEL)
339 		return -1;
340 	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON &&
341 			(usage->hid & HID_USAGE) == 0x003)
342 		return -1;
343 	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER &&
344 			(usage->hid & HID_USAGE) == 0x238)
345 		return -1;
346 
347 	/* Map wheel emulation reports: 0xff10 */
348 	if ((usage->hid & HID_USAGE_PAGE) == 0xff100000) {
349 		field->flags |= HID_MAIN_ITEM_RELATIVE | HID_MAIN_ITEM_VARIABLE;
350 		field->logical_minimum = -127;
351 		field->logical_maximum = 127;
352 
353 		switch (usage->hid & HID_USAGE) {
354 		case 0x0000:
355 			hid_map_usage(hi, usage, bit, max, EV_REL, REL_HWHEEL);
356 			return 1;
357 		case 0x0001:
358 			hid_map_usage(hi, usage, bit, max, EV_REL, REL_WHEEL);
359 			return 1;
360 		default:
361 			return -1;
362 		}
363 	}
364 
365 	return 0;
366 }
367 
lenovo_input_mapping_scrollpoint(struct hid_device * hdev,struct hid_input * hi,struct hid_field * field,struct hid_usage * usage,unsigned long ** bit,int * max)368 static int lenovo_input_mapping_scrollpoint(struct hid_device *hdev,
369 		struct hid_input *hi, struct hid_field *field,
370 		struct hid_usage *usage, unsigned long **bit, int *max)
371 {
372 	if (usage->hid == HID_GD_Z) {
373 		hid_map_usage(hi, usage, bit, max, EV_REL, REL_HWHEEL);
374 		return 1;
375 	}
376 	return 0;
377 }
378 
lenovo_input_mapping_tp10_ultrabook_kbd(struct hid_device * hdev,struct hid_input * hi,struct hid_field * field,struct hid_usage * usage,unsigned long ** bit,int * max)379 static int lenovo_input_mapping_tp10_ultrabook_kbd(struct hid_device *hdev,
380 		struct hid_input *hi, struct hid_field *field,
381 		struct hid_usage *usage, unsigned long **bit, int *max)
382 {
383 	/*
384 	 * The ThinkPad 10 Ultrabook Keyboard uses 0x000c0001 usage for
385 	 * a bunch of keys which have no standard consumer page code.
386 	 */
387 	if (usage->hid == 0x000c0001) {
388 		switch (usage->usage_index) {
389 		case 8: /* Fn-Esc: Fn-lock toggle */
390 			map_key_clear(KEY_FN_ESC);
391 			return 1;
392 		case 9: /* Fn-F4: Mic mute */
393 			map_key_clear(LENOVO_KEY_MICMUTE);
394 			return 1;
395 		case 10: /* Fn-F7: Control panel */
396 			map_key_clear(KEY_CONFIG);
397 			return 1;
398 		case 11: /* Fn-F8: Search (magnifier glass) */
399 			map_key_clear(KEY_SEARCH);
400 			return 1;
401 		case 12: /* Fn-F10: Open My computer (6 boxes) */
402 			map_key_clear(KEY_FILE);
403 			return 1;
404 		}
405 	}
406 
407 	/*
408 	 * The Ultrabook Keyboard sends a spurious F23 key-press when resuming
409 	 * from suspend and it does not actually have a F23 key, ignore it.
410 	 */
411 	if (usage->hid == 0x00070072)
412 		return -1;
413 
414 	return 0;
415 }
416 
lenovo_input_mapping_x1_tab_kbd(struct hid_device * hdev,struct hid_input * hi,struct hid_field * field,struct hid_usage * usage,unsigned long ** bit,int * max)417 static int lenovo_input_mapping_x1_tab_kbd(struct hid_device *hdev,
418 		struct hid_input *hi, struct hid_field *field,
419 		struct hid_usage *usage, unsigned long **bit, int *max)
420 {
421 	/*
422 	 * The ThinkPad X1 Tablet Thin Keyboard uses 0x000c0001 usage for
423 	 * a bunch of keys which have no standard consumer page code.
424 	 */
425 	if (usage->hid == 0x000c0001) {
426 		switch (usage->usage_index) {
427 		case 0: /* Fn-F10: Enable/disable bluetooth */
428 			map_key_clear(KEY_BLUETOOTH);
429 			return 1;
430 		case 1: /* Fn-F11: Keyboard settings */
431 			map_key_clear(KEY_KEYBOARD);
432 			return 1;
433 		case 2: /* Fn-F12: User function / Cortana */
434 			map_key_clear(KEY_MACRO1);
435 			return 1;
436 		case 3: /* Fn-PrtSc: Snipping tool */
437 			map_key_clear(KEY_SELECTIVE_SCREENSHOT);
438 			return 1;
439 		case 8: /* Fn-Esc: Fn-lock toggle */
440 			map_key_clear(KEY_FN_ESC);
441 			return 1;
442 		case 9: /* Fn-F4: Mute/unmute microphone */
443 			map_key_clear(KEY_MICMUTE);
444 			return 1;
445 		case 10: /* Fn-F9: Settings */
446 			map_key_clear(KEY_CONFIG);
447 			return 1;
448 		case 13: /* Fn-F7: Manage external displays */
449 			map_key_clear(KEY_SWITCHVIDEOMODE);
450 			return 1;
451 		case 14: /* Fn-F8: Enable/disable wifi */
452 			map_key_clear(KEY_WLAN);
453 			return 1;
454 		}
455 	}
456 
457 	if (usage->hid == (HID_UP_KEYBOARD | 0x009a)) {
458 		map_key_clear(KEY_SYSRQ);
459 		return 1;
460 	}
461 
462 	return 0;
463 }
464 
lenovo_input_mapping(struct hid_device * hdev,struct hid_input * hi,struct hid_field * field,struct hid_usage * usage,unsigned long ** bit,int * max)465 static int lenovo_input_mapping(struct hid_device *hdev,
466 		struct hid_input *hi, struct hid_field *field,
467 		struct hid_usage *usage, unsigned long **bit, int *max)
468 {
469 	switch (hdev->product) {
470 	case USB_DEVICE_ID_LENOVO_TPKBD:
471 		return lenovo_input_mapping_tpkbd(hdev, hi, field,
472 							usage, bit, max);
473 	case USB_DEVICE_ID_LENOVO_CUSBKBD:
474 	case USB_DEVICE_ID_LENOVO_CBTKBD:
475 		return lenovo_input_mapping_cptkbd(hdev, hi, field,
476 							usage, bit, max);
477 	case USB_DEVICE_ID_LENOVO_TPIIUSBKBD:
478 	case USB_DEVICE_ID_LENOVO_TPIIBTKBD:
479 		return lenovo_input_mapping_tpIIkbd(hdev, hi, field,
480 							usage, bit, max);
481 	case USB_DEVICE_ID_IBM_SCROLLPOINT_III:
482 	case USB_DEVICE_ID_IBM_SCROLLPOINT_PRO:
483 	case USB_DEVICE_ID_IBM_SCROLLPOINT_OPTICAL:
484 	case USB_DEVICE_ID_IBM_SCROLLPOINT_800DPI_OPTICAL:
485 	case USB_DEVICE_ID_IBM_SCROLLPOINT_800DPI_OPTICAL_PRO:
486 	case USB_DEVICE_ID_LENOVO_SCROLLPOINT_OPTICAL:
487 		return lenovo_input_mapping_scrollpoint(hdev, hi, field,
488 							usage, bit, max);
489 	case USB_DEVICE_ID_LENOVO_TP10UBKBD:
490 		return lenovo_input_mapping_tp10_ultrabook_kbd(hdev, hi, field,
491 							       usage, bit, max);
492 	case USB_DEVICE_ID_LENOVO_X12_TAB:
493 	case USB_DEVICE_ID_LENOVO_X12_TAB2:
494 	case USB_DEVICE_ID_LENOVO_X1_TAB:
495 	case USB_DEVICE_ID_LENOVO_X1_TAB3:
496 		return lenovo_input_mapping_x1_tab_kbd(hdev, hi, field, usage, bit, max);
497 	default:
498 		return 0;
499 	}
500 }
501 
502 #undef map_key_clear
503 
504 /* Send a config command to the keyboard */
lenovo_send_cmd_cptkbd(struct hid_device * hdev,unsigned char byte2,unsigned char byte3)505 static int lenovo_send_cmd_cptkbd(struct hid_device *hdev,
506 			unsigned char byte2, unsigned char byte3)
507 {
508 	int ret;
509 	unsigned char *buf;
510 
511 	buf = kzalloc(3, GFP_KERNEL);
512 	if (!buf)
513 		return -ENOMEM;
514 
515 	/*
516 	 * Feature report 0x13 is used for USB,
517 	 * output report 0x18 is used for Bluetooth.
518 	 * buf[0] is ignored by hid_hw_raw_request.
519 	 */
520 	buf[0] = 0x18;
521 	buf[1] = byte2;
522 	buf[2] = byte3;
523 
524 	switch (hdev->product) {
525 	case USB_DEVICE_ID_LENOVO_CUSBKBD:
526 	case USB_DEVICE_ID_LENOVO_TPIIUSBKBD:
527 		ret = hid_hw_raw_request(hdev, 0x13, buf, 3,
528 					HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
529 		break;
530 	case USB_DEVICE_ID_LENOVO_CBTKBD:
531 	case USB_DEVICE_ID_LENOVO_TPIIBTKBD:
532 		ret = hid_hw_output_report(hdev, buf, 3);
533 		break;
534 	default:
535 		ret = -EINVAL;
536 		break;
537 	}
538 
539 	kfree(buf);
540 
541 	return ret < 0 ? ret : 0; /* BT returns 0, USB returns sizeof(buf) */
542 }
543 
lenovo_features_set_cptkbd(struct hid_device * hdev)544 static void lenovo_features_set_cptkbd(struct hid_device *hdev)
545 {
546 	int ret;
547 	struct lenovo_drvdata *cptkbd_data = hid_get_drvdata(hdev);
548 
549 	/*
550 	 * Tell the keyboard a driver understands it, and turn F7, F9, F11 into
551 	 * regular keys
552 	 */
553 	ret = lenovo_send_cmd_cptkbd(hdev, 0x01, 0x03);
554 	if (ret)
555 		hid_warn(hdev, "Failed to switch F7/9/11 mode: %d\n", ret);
556 
557 	/* Switch middle button to native mode */
558 	ret = lenovo_send_cmd_cptkbd(hdev, 0x09, 0x01);
559 	if (ret)
560 		hid_warn(hdev, "Failed to switch middle button: %d\n", ret);
561 
562 	ret = lenovo_send_cmd_cptkbd(hdev, 0x05, cptkbd_data->fn_lock);
563 	if (ret)
564 		hid_err(hdev, "Fn-lock setting failed: %d\n", ret);
565 
566 	ret = lenovo_send_cmd_cptkbd(hdev, 0x02, cptkbd_data->sensitivity);
567 	if (ret)
568 		hid_err(hdev, "Sensitivity setting failed: %d\n", ret);
569 }
570 
attr_fn_lock_show(struct device * dev,struct device_attribute * attr,char * buf)571 static ssize_t attr_fn_lock_show(struct device *dev,
572 		struct device_attribute *attr,
573 		char *buf)
574 {
575 	struct hid_device *hdev = to_hid_device(dev);
576 	struct lenovo_drvdata *data = hid_get_drvdata(hdev);
577 
578 	return sysfs_emit(buf, "%u\n", data->fn_lock);
579 }
580 
attr_fn_lock_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)581 static ssize_t attr_fn_lock_store(struct device *dev,
582 		struct device_attribute *attr,
583 		const char *buf,
584 		size_t count)
585 {
586 	struct hid_device *hdev = to_hid_device(dev);
587 	struct lenovo_drvdata *data = hid_get_drvdata(hdev);
588 	int value, ret;
589 
590 	if (kstrtoint(buf, 10, &value))
591 		return -EINVAL;
592 	if (value < 0 || value > 1)
593 		return -EINVAL;
594 
595 	data->fn_lock = !!value;
596 
597 	switch (hdev->product) {
598 	case USB_DEVICE_ID_LENOVO_CUSBKBD:
599 	case USB_DEVICE_ID_LENOVO_CBTKBD:
600 	case USB_DEVICE_ID_LENOVO_TPIIUSBKBD:
601 	case USB_DEVICE_ID_LENOVO_TPIIBTKBD:
602 		lenovo_features_set_cptkbd(hdev);
603 		break;
604 	case USB_DEVICE_ID_LENOVO_X12_TAB:
605 	case USB_DEVICE_ID_LENOVO_X12_TAB2:
606 	case USB_DEVICE_ID_LENOVO_TP10UBKBD:
607 	case USB_DEVICE_ID_LENOVO_X1_TAB:
608 	case USB_DEVICE_ID_LENOVO_X1_TAB3:
609 		ret = lenovo_led_set_tp10ubkbd(hdev, TP10UBKBD_FN_LOCK_LED, value);
610 		if (ret)
611 			return ret;
612 		break;
613 	}
614 
615 	return count;
616 }
617 
attr_sensitivity_show_cptkbd(struct device * dev,struct device_attribute * attr,char * buf)618 static ssize_t attr_sensitivity_show_cptkbd(struct device *dev,
619 		struct device_attribute *attr,
620 		char *buf)
621 {
622 	struct hid_device *hdev = to_hid_device(dev);
623 	struct lenovo_drvdata *cptkbd_data = hid_get_drvdata(hdev);
624 
625 	return sysfs_emit(buf, "%u\n", cptkbd_data->sensitivity);
626 }
627 
attr_sensitivity_store_cptkbd(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)628 static ssize_t attr_sensitivity_store_cptkbd(struct device *dev,
629 		struct device_attribute *attr,
630 		const char *buf,
631 		size_t count)
632 {
633 	struct hid_device *hdev = to_hid_device(dev);
634 	struct lenovo_drvdata *cptkbd_data = hid_get_drvdata(hdev);
635 	int value;
636 
637 	if (kstrtoint(buf, 10, &value) || value < 1 || value > 255)
638 		return -EINVAL;
639 
640 	cptkbd_data->sensitivity = value;
641 	lenovo_features_set_cptkbd(hdev);
642 
643 	return count;
644 }
645 
attr_middleclick_workaround_show_cptkbd(struct device * dev,struct device_attribute * attr,char * buf)646 static ssize_t attr_middleclick_workaround_show_cptkbd(struct device *dev,
647 		struct device_attribute *attr,
648 		char *buf)
649 {
650 	struct hid_device *hdev = to_hid_device(dev);
651 	struct lenovo_drvdata *cptkbd_data = hid_get_drvdata(hdev);
652 
653 	return sysfs_emit(buf, "%u\n",
654 			  cptkbd_data->middleclick_workaround_cptkbd);
655 }
656 
attr_middleclick_workaround_store_cptkbd(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)657 static ssize_t attr_middleclick_workaround_store_cptkbd(struct device *dev,
658 		struct device_attribute *attr,
659 		const char *buf,
660 		size_t count)
661 {
662 	struct hid_device *hdev = to_hid_device(dev);
663 	struct lenovo_drvdata *cptkbd_data = hid_get_drvdata(hdev);
664 	int value;
665 
666 	if (kstrtoint(buf, 10, &value))
667 		return -EINVAL;
668 	if (value < 0 || value > 1)
669 		return -EINVAL;
670 
671 	cptkbd_data->middleclick_workaround_cptkbd = !!value;
672 
673 	return count;
674 }
675 
676 
677 static struct device_attribute dev_attr_fn_lock =
678 	__ATTR(fn_lock, S_IWUSR | S_IRUGO,
679 			attr_fn_lock_show,
680 			attr_fn_lock_store);
681 
682 static struct device_attribute dev_attr_sensitivity_cptkbd =
683 	__ATTR(sensitivity, S_IWUSR | S_IRUGO,
684 			attr_sensitivity_show_cptkbd,
685 			attr_sensitivity_store_cptkbd);
686 
687 static struct device_attribute dev_attr_middleclick_workaround_cptkbd =
688 	__ATTR(middleclick_workaround, S_IWUSR | S_IRUGO,
689 			attr_middleclick_workaround_show_cptkbd,
690 			attr_middleclick_workaround_store_cptkbd);
691 
692 
693 static struct attribute *lenovo_attributes_cptkbd[] = {
694 	&dev_attr_fn_lock.attr,
695 	&dev_attr_sensitivity_cptkbd.attr,
696 	&dev_attr_middleclick_workaround_cptkbd.attr,
697 	NULL
698 };
699 
700 static const struct attribute_group lenovo_attr_group_cptkbd = {
701 	.attrs = lenovo_attributes_cptkbd,
702 };
703 
704 /* Function to handle Lenovo Thinkpad TAB X12's HID raw inputs for fn keys*/
lenovo_raw_event_TP_X12_tab(struct hid_device * hdev,u32 raw_data)705 static int lenovo_raw_event_TP_X12_tab(struct hid_device *hdev, u32 raw_data)
706 {
707 	struct hid_input *hidinput;
708 	struct input_dev *input = NULL;
709 
710 	/* Iterate through all associated input devices */
711 	list_for_each_entry(hidinput, &hdev->inputs, list) {
712 		input = hidinput->input;
713 		if (!input)
714 			continue;
715 
716 		switch (raw_data) {
717 			/* fn-F20 being used here for MIC mute*/
718 		case TP_X12_RAW_HOTKEY_FN_F4:
719 			report_key_event(input, LENOVO_KEY_MICMUTE);
720 			return 1;
721 		/* Power-mode or Airplane mode will be called based on the device*/
722 		case TP_X12_RAW_HOTKEY_FN_F8:
723 			/*
724 			 * TP X12 TAB uses Fn-F8 calls Airplanemode
725 			 * Whereas TP X12 TAB2 uses Fn-F8 for toggling
726 			 * Power modes
727 			 */
728 			if (hdev->product == USB_DEVICE_ID_LENOVO_X12_TAB) {
729 				report_key_event(input, KEY_RFKILL);
730 				return 1;
731 			}
732 			platform_profile_cycle();
733 			return 1;
734 		case TP_X12_RAW_HOTKEY_FN_F10:
735 			/* TAB1 has PICKUP Phone and TAB2 use Snipping tool*/
736 			(hdev->product == USB_DEVICE_ID_LENOVO_X12_TAB) ?
737 			report_key_event(input, KEY_PICKUP_PHONE) :
738 			report_key_event(input, KEY_SELECTIVE_SCREENSHOT);
739 			return 1;
740 		case TP_X12_RAW_HOTKEY_FN_F12:
741 			/* BookMarks/STAR key*/
742 			report_key_event(input, KEY_BOOKMARKS);
743 			return 1;
744 		case TP_X12_RAW_HOTKEY_FN_SPACE:
745 			/* Keyboard LED backlight toggle*/
746 			report_key_event(input, KEY_KBDILLUMTOGGLE);
747 			return 1;
748 		default:
749 			break;
750 		}
751 	}
752 	return 0;
753 }
754 
lenovo_raw_event(struct hid_device * hdev,struct hid_report * report,u8 * data,int size)755 static int lenovo_raw_event(struct hid_device *hdev,
756 			struct hid_report *report, u8 *data, int size)
757 {
758 	/*
759 	 * Compact USB keyboard's Fn-F12 report holds down many other keys, and
760 	 * its own key is outside the usage page range. Remove extra
761 	 * keypresses and remap to inside usage page.
762 	 */
763 	if (unlikely(hdev->product == USB_DEVICE_ID_LENOVO_CUSBKBD
764 			&& size == 3
765 			&& data[0] == 0x15
766 			&& data[1] == 0x94
767 			&& data[2] == 0x01)) {
768 		data[1] = 0x00;
769 		data[2] = 0x01;
770 	}
771 
772 	/*
773 	 * Lenovo TP X12 Tab KBD's Fn+XX is HID raw data defined. Report ID is 0x03
774 	 * e.g.: Raw data received for MIC mute is 0x00020003.
775 	 */
776 	if (unlikely((hdev->product == USB_DEVICE_ID_LENOVO_X12_TAB
777 			|| hdev->product == USB_DEVICE_ID_LENOVO_X12_TAB2)
778 			&& size >= 3 && report->id == 0x03))
779 		return lenovo_raw_event_TP_X12_tab(hdev, le32_to_cpu(*(__le32 *)data));
780 
781 	return 0;
782 }
783 
lenovo_event_tp10ubkbd(struct hid_device * hdev,struct hid_field * field,struct hid_usage * usage,__s32 value)784 static int lenovo_event_tp10ubkbd(struct hid_device *hdev,
785 		struct hid_field *field, struct hid_usage *usage, __s32 value)
786 {
787 	struct lenovo_drvdata *data = hid_get_drvdata(hdev);
788 
789 	if (usage->type == EV_KEY && usage->code == KEY_FN_ESC && value == 1) {
790 		/*
791 		 * The user has toggled the Fn-lock state. Toggle our own
792 		 * cached value of it and sync our value to the keyboard to
793 		 * ensure things are in sync (the sycning should be a no-op).
794 		 */
795 		data->fn_lock = !data->fn_lock;
796 		schedule_work(&data->fn_lock_sync_work);
797 	}
798 
799 	return 0;
800 }
801 
lenovo_event_cptkbd(struct hid_device * hdev,struct hid_field * field,struct hid_usage * usage,__s32 value)802 static int lenovo_event_cptkbd(struct hid_device *hdev,
803 		struct hid_field *field, struct hid_usage *usage, __s32 value)
804 {
805 	struct lenovo_drvdata *cptkbd_data = hid_get_drvdata(hdev);
806 
807 	if (cptkbd_data->middleclick_workaround_cptkbd) {
808 		/* "wheel" scroll events */
809 		if (usage->type == EV_REL && (usage->code == REL_WHEEL ||
810 				usage->code == REL_HWHEEL)) {
811 			/* Scroll events disable middle-click event */
812 			cptkbd_data->middlebutton_state = 2;
813 			return 0;
814 		}
815 
816 		/* Middle click events */
817 		if (usage->type == EV_KEY && usage->code == BTN_MIDDLE) {
818 			if (value == 1) {
819 				cptkbd_data->middlebutton_state = 1;
820 			} else if (value == 0) {
821 				if (cptkbd_data->middlebutton_state == 1) {
822 					/* No scrolling inbetween, send middle-click */
823 					input_event(field->hidinput->input,
824 						EV_KEY, BTN_MIDDLE, 1);
825 					input_sync(field->hidinput->input);
826 					input_event(field->hidinput->input,
827 						EV_KEY, BTN_MIDDLE, 0);
828 					input_sync(field->hidinput->input);
829 				}
830 				cptkbd_data->middlebutton_state = 0;
831 			}
832 			return 1;
833 		}
834 	}
835 
836 	if (usage->type == EV_KEY && usage->code == KEY_FN_ESC && value == 1) {
837 		/*
838 		 * The user has toggled the Fn-lock state. Toggle our own
839 		 * cached value of it and sync our value to the keyboard to
840 		 * ensure things are in sync (the syncing should be a no-op).
841 		 */
842 		cptkbd_data->fn_lock = !cptkbd_data->fn_lock;
843 	}
844 
845 	return 0;
846 }
847 
lenovo_event(struct hid_device * hdev,struct hid_field * field,struct hid_usage * usage,__s32 value)848 static int lenovo_event(struct hid_device *hdev, struct hid_field *field,
849 		struct hid_usage *usage, __s32 value)
850 {
851 	if (!hid_get_drvdata(hdev))
852 		return 0;
853 
854 	switch (hdev->product) {
855 	case USB_DEVICE_ID_LENOVO_CUSBKBD:
856 	case USB_DEVICE_ID_LENOVO_CBTKBD:
857 	case USB_DEVICE_ID_LENOVO_TPIIUSBKBD:
858 	case USB_DEVICE_ID_LENOVO_TPIIBTKBD:
859 		return lenovo_event_cptkbd(hdev, field, usage, value);
860 	case USB_DEVICE_ID_LENOVO_X12_TAB:
861 	case USB_DEVICE_ID_LENOVO_X12_TAB2:
862 	case USB_DEVICE_ID_LENOVO_TP10UBKBD:
863 	case USB_DEVICE_ID_LENOVO_X1_TAB:
864 	case USB_DEVICE_ID_LENOVO_X1_TAB3:
865 		return lenovo_event_tp10ubkbd(hdev, field, usage, value);
866 	default:
867 		return 0;
868 	}
869 }
870 
lenovo_features_set_tpkbd(struct hid_device * hdev)871 static int lenovo_features_set_tpkbd(struct hid_device *hdev)
872 {
873 	struct hid_report *report;
874 	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
875 
876 	report = hdev->report_enum[HID_FEATURE_REPORT].report_id_hash[4];
877 
878 	report->field[0]->value[0]  = data_pointer->press_to_select   ? 0x01 : 0x02;
879 	report->field[0]->value[0] |= data_pointer->dragging          ? 0x04 : 0x08;
880 	report->field[0]->value[0] |= data_pointer->release_to_select ? 0x10 : 0x20;
881 	report->field[0]->value[0] |= data_pointer->select_right      ? 0x80 : 0x40;
882 	report->field[1]->value[0] = 0x03; // unknown setting, imitate windows driver
883 	report->field[2]->value[0] = data_pointer->sensitivity;
884 	report->field[3]->value[0] = data_pointer->press_speed;
885 
886 	hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
887 	return 0;
888 }
889 
attr_press_to_select_show_tpkbd(struct device * dev,struct device_attribute * attr,char * buf)890 static ssize_t attr_press_to_select_show_tpkbd(struct device *dev,
891 		struct device_attribute *attr,
892 		char *buf)
893 {
894 	struct hid_device *hdev = to_hid_device(dev);
895 	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
896 
897 	return sysfs_emit(buf, "%u\n", data_pointer->press_to_select);
898 }
899 
attr_press_to_select_store_tpkbd(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)900 static ssize_t attr_press_to_select_store_tpkbd(struct device *dev,
901 		struct device_attribute *attr,
902 		const char *buf,
903 		size_t count)
904 {
905 	struct hid_device *hdev = to_hid_device(dev);
906 	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
907 	int value;
908 
909 	if (kstrtoint(buf, 10, &value))
910 		return -EINVAL;
911 	if (value < 0 || value > 1)
912 		return -EINVAL;
913 
914 	data_pointer->press_to_select = value;
915 	lenovo_features_set_tpkbd(hdev);
916 
917 	return count;
918 }
919 
attr_dragging_show_tpkbd(struct device * dev,struct device_attribute * attr,char * buf)920 static ssize_t attr_dragging_show_tpkbd(struct device *dev,
921 		struct device_attribute *attr,
922 		char *buf)
923 {
924 	struct hid_device *hdev = to_hid_device(dev);
925 	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
926 
927 	return sysfs_emit(buf, "%u\n", data_pointer->dragging);
928 }
929 
attr_dragging_store_tpkbd(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)930 static ssize_t attr_dragging_store_tpkbd(struct device *dev,
931 		struct device_attribute *attr,
932 		const char *buf,
933 		size_t count)
934 {
935 	struct hid_device *hdev = to_hid_device(dev);
936 	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
937 	int value;
938 
939 	if (kstrtoint(buf, 10, &value))
940 		return -EINVAL;
941 	if (value < 0 || value > 1)
942 		return -EINVAL;
943 
944 	data_pointer->dragging = value;
945 	lenovo_features_set_tpkbd(hdev);
946 
947 	return count;
948 }
949 
attr_release_to_select_show_tpkbd(struct device * dev,struct device_attribute * attr,char * buf)950 static ssize_t attr_release_to_select_show_tpkbd(struct device *dev,
951 		struct device_attribute *attr,
952 		char *buf)
953 {
954 	struct hid_device *hdev = to_hid_device(dev);
955 	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
956 
957 	return sysfs_emit(buf, "%u\n", data_pointer->release_to_select);
958 }
959 
attr_release_to_select_store_tpkbd(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)960 static ssize_t attr_release_to_select_store_tpkbd(struct device *dev,
961 		struct device_attribute *attr,
962 		const char *buf,
963 		size_t count)
964 {
965 	struct hid_device *hdev = to_hid_device(dev);
966 	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
967 	int value;
968 
969 	if (kstrtoint(buf, 10, &value))
970 		return -EINVAL;
971 	if (value < 0 || value > 1)
972 		return -EINVAL;
973 
974 	data_pointer->release_to_select = value;
975 	lenovo_features_set_tpkbd(hdev);
976 
977 	return count;
978 }
979 
attr_select_right_show_tpkbd(struct device * dev,struct device_attribute * attr,char * buf)980 static ssize_t attr_select_right_show_tpkbd(struct device *dev,
981 		struct device_attribute *attr,
982 		char *buf)
983 {
984 	struct hid_device *hdev = to_hid_device(dev);
985 	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
986 
987 	return sysfs_emit(buf, "%u\n", data_pointer->select_right);
988 }
989 
attr_select_right_store_tpkbd(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)990 static ssize_t attr_select_right_store_tpkbd(struct device *dev,
991 		struct device_attribute *attr,
992 		const char *buf,
993 		size_t count)
994 {
995 	struct hid_device *hdev = to_hid_device(dev);
996 	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
997 	int value;
998 
999 	if (kstrtoint(buf, 10, &value))
1000 		return -EINVAL;
1001 	if (value < 0 || value > 1)
1002 		return -EINVAL;
1003 
1004 	data_pointer->select_right = value;
1005 	lenovo_features_set_tpkbd(hdev);
1006 
1007 	return count;
1008 }
1009 
attr_sensitivity_show_tpkbd(struct device * dev,struct device_attribute * attr,char * buf)1010 static ssize_t attr_sensitivity_show_tpkbd(struct device *dev,
1011 		struct device_attribute *attr,
1012 		char *buf)
1013 {
1014 	struct hid_device *hdev = to_hid_device(dev);
1015 	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
1016 
1017 	return sysfs_emit(buf, "%u\n", data_pointer->sensitivity);
1018 }
1019 
attr_sensitivity_store_tpkbd(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1020 static ssize_t attr_sensitivity_store_tpkbd(struct device *dev,
1021 		struct device_attribute *attr,
1022 		const char *buf,
1023 		size_t count)
1024 {
1025 	struct hid_device *hdev = to_hid_device(dev);
1026 	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
1027 	int value;
1028 
1029 	if (kstrtoint(buf, 10, &value) || value < 1 || value > 255)
1030 		return -EINVAL;
1031 
1032 	data_pointer->sensitivity = value;
1033 	lenovo_features_set_tpkbd(hdev);
1034 
1035 	return count;
1036 }
1037 
attr_press_speed_show_tpkbd(struct device * dev,struct device_attribute * attr,char * buf)1038 static ssize_t attr_press_speed_show_tpkbd(struct device *dev,
1039 		struct device_attribute *attr,
1040 		char *buf)
1041 {
1042 	struct hid_device *hdev = to_hid_device(dev);
1043 	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
1044 
1045 	return sysfs_emit(buf, "%u\n", data_pointer->press_speed);
1046 }
1047 
attr_press_speed_store_tpkbd(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1048 static ssize_t attr_press_speed_store_tpkbd(struct device *dev,
1049 		struct device_attribute *attr,
1050 		const char *buf,
1051 		size_t count)
1052 {
1053 	struct hid_device *hdev = to_hid_device(dev);
1054 	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
1055 	int value;
1056 
1057 	if (kstrtoint(buf, 10, &value) || value < 1 || value > 255)
1058 		return -EINVAL;
1059 
1060 	data_pointer->press_speed = value;
1061 	lenovo_features_set_tpkbd(hdev);
1062 
1063 	return count;
1064 }
1065 
1066 static struct device_attribute dev_attr_press_to_select_tpkbd =
1067 	__ATTR(press_to_select, S_IWUSR | S_IRUGO,
1068 			attr_press_to_select_show_tpkbd,
1069 			attr_press_to_select_store_tpkbd);
1070 
1071 static struct device_attribute dev_attr_dragging_tpkbd =
1072 	__ATTR(dragging, S_IWUSR | S_IRUGO,
1073 			attr_dragging_show_tpkbd,
1074 			attr_dragging_store_tpkbd);
1075 
1076 static struct device_attribute dev_attr_release_to_select_tpkbd =
1077 	__ATTR(release_to_select, S_IWUSR | S_IRUGO,
1078 			attr_release_to_select_show_tpkbd,
1079 			attr_release_to_select_store_tpkbd);
1080 
1081 static struct device_attribute dev_attr_select_right_tpkbd =
1082 	__ATTR(select_right, S_IWUSR | S_IRUGO,
1083 			attr_select_right_show_tpkbd,
1084 			attr_select_right_store_tpkbd);
1085 
1086 static struct device_attribute dev_attr_sensitivity_tpkbd =
1087 	__ATTR(sensitivity, S_IWUSR | S_IRUGO,
1088 			attr_sensitivity_show_tpkbd,
1089 			attr_sensitivity_store_tpkbd);
1090 
1091 static struct device_attribute dev_attr_press_speed_tpkbd =
1092 	__ATTR(press_speed, S_IWUSR | S_IRUGO,
1093 			attr_press_speed_show_tpkbd,
1094 			attr_press_speed_store_tpkbd);
1095 
1096 static struct attribute *lenovo_attributes_tpkbd[] = {
1097 	&dev_attr_press_to_select_tpkbd.attr,
1098 	&dev_attr_dragging_tpkbd.attr,
1099 	&dev_attr_release_to_select_tpkbd.attr,
1100 	&dev_attr_select_right_tpkbd.attr,
1101 	&dev_attr_sensitivity_tpkbd.attr,
1102 	&dev_attr_press_speed_tpkbd.attr,
1103 	NULL
1104 };
1105 
1106 static const struct attribute_group lenovo_attr_group_tpkbd = {
1107 	.attrs = lenovo_attributes_tpkbd,
1108 };
1109 
lenovo_led_set_tpkbd(struct hid_device * hdev)1110 static void lenovo_led_set_tpkbd(struct hid_device *hdev)
1111 {
1112 	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
1113 	struct hid_report *report;
1114 
1115 	report = hdev->report_enum[HID_OUTPUT_REPORT].report_id_hash[3];
1116 	report->field[0]->value[0] = (data_pointer->led_state >> 0) & 1;
1117 	report->field[0]->value[1] = (data_pointer->led_state >> 1) & 1;
1118 	hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
1119 }
1120 
lenovo_led_brightness_set(struct led_classdev * led_cdev,enum led_brightness value)1121 static int lenovo_led_brightness_set(struct led_classdev *led_cdev,
1122 			enum led_brightness value)
1123 {
1124 	struct device *dev = led_cdev->dev->parent;
1125 	struct hid_device *hdev = to_hid_device(dev);
1126 	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
1127 	static const u8 tp10ubkbd_led[] = { TP10UBKBD_MUTE_LED, TP10UBKBD_MICMUTE_LED };
1128 	int led_nr = 0;
1129 	int ret = 0;
1130 
1131 	if (led_cdev == &data_pointer->led_micmute)
1132 		led_nr = 1;
1133 
1134 	if (value == LED_OFF)
1135 		data_pointer->led_state &= ~(1 << led_nr);
1136 	else
1137 		data_pointer->led_state |= 1 << led_nr;
1138 
1139 	switch (hdev->product) {
1140 	case USB_DEVICE_ID_LENOVO_TPKBD:
1141 		lenovo_led_set_tpkbd(hdev);
1142 		break;
1143 	case USB_DEVICE_ID_LENOVO_X12_TAB:
1144 	case USB_DEVICE_ID_LENOVO_X12_TAB2:
1145 	case USB_DEVICE_ID_LENOVO_TP10UBKBD:
1146 	case USB_DEVICE_ID_LENOVO_X1_TAB:
1147 	case USB_DEVICE_ID_LENOVO_X1_TAB3:
1148 		ret = lenovo_led_set_tp10ubkbd(hdev, tp10ubkbd_led[led_nr], value);
1149 		break;
1150 	}
1151 
1152 	return ret;
1153 }
1154 
lenovo_register_leds(struct hid_device * hdev)1155 static int lenovo_register_leds(struct hid_device *hdev)
1156 {
1157 	struct lenovo_drvdata *data = hid_get_drvdata(hdev);
1158 	size_t name_sz = strlen(dev_name(&hdev->dev)) + 16;
1159 	char *name_mute, *name_micm;
1160 	int ret;
1161 
1162 	name_mute = devm_kzalloc(&hdev->dev, name_sz, GFP_KERNEL);
1163 	name_micm = devm_kzalloc(&hdev->dev, name_sz, GFP_KERNEL);
1164 	if (name_mute == NULL || name_micm == NULL) {
1165 		hid_err(hdev, "Could not allocate memory for led data\n");
1166 		return -ENOMEM;
1167 	}
1168 	snprintf(name_mute, name_sz, "%s:amber:mute", dev_name(&hdev->dev));
1169 	snprintf(name_micm, name_sz, "%s:amber:micmute", dev_name(&hdev->dev));
1170 
1171 	data->led_mute.name = name_mute;
1172 	data->led_mute.default_trigger = "audio-mute";
1173 	data->led_mute.brightness_set_blocking = lenovo_led_brightness_set;
1174 	data->led_mute.max_brightness = 1;
1175 	data->led_mute.flags = LED_HW_PLUGGABLE;
1176 	data->led_mute.dev = &hdev->dev;
1177 	ret = led_classdev_register(&hdev->dev, &data->led_mute);
1178 	if (ret < 0)
1179 		return ret;
1180 
1181 	data->led_micmute.name = name_micm;
1182 	data->led_micmute.default_trigger = "audio-micmute";
1183 	data->led_micmute.brightness_set_blocking = lenovo_led_brightness_set;
1184 	data->led_micmute.max_brightness = 1;
1185 	data->led_micmute.flags = LED_HW_PLUGGABLE;
1186 	data->led_micmute.dev = &hdev->dev;
1187 	ret = led_classdev_register(&hdev->dev, &data->led_micmute);
1188 	if (ret < 0) {
1189 		led_classdev_unregister(&data->led_mute);
1190 		return ret;
1191 	}
1192 
1193 	return 0;
1194 }
1195 
lenovo_probe_tpkbd(struct hid_device * hdev)1196 static int lenovo_probe_tpkbd(struct hid_device *hdev)
1197 {
1198 	struct lenovo_drvdata *data_pointer;
1199 	int i, ret;
1200 
1201 	/*
1202 	 * Only register extra settings against subdevice where input_mapping
1203 	 * set drvdata to 1, i.e. the trackpoint.
1204 	 */
1205 	if (!hid_get_drvdata(hdev))
1206 		return 0;
1207 
1208 	hid_set_drvdata(hdev, NULL);
1209 
1210 	/* Validate required reports. */
1211 	for (i = 0; i < 4; i++) {
1212 		if (!hid_validate_values(hdev, HID_FEATURE_REPORT, 4, i, 1))
1213 			return -ENODEV;
1214 	}
1215 	if (!hid_validate_values(hdev, HID_OUTPUT_REPORT, 3, 0, 2))
1216 		return -ENODEV;
1217 
1218 	ret = sysfs_create_group(&hdev->dev.kobj, &lenovo_attr_group_tpkbd);
1219 	if (ret)
1220 		hid_warn(hdev, "Could not create sysfs group: %d\n", ret);
1221 
1222 	data_pointer = devm_kzalloc(&hdev->dev,
1223 				    sizeof(struct lenovo_drvdata),
1224 				    GFP_KERNEL);
1225 	if (data_pointer == NULL) {
1226 		hid_err(hdev, "Could not allocate memory for driver data\n");
1227 		ret = -ENOMEM;
1228 		goto err;
1229 	}
1230 
1231 	// set same default values as windows driver
1232 	data_pointer->sensitivity = 0xa0;
1233 	data_pointer->press_speed = 0x38;
1234 
1235 	hid_set_drvdata(hdev, data_pointer);
1236 
1237 	ret = lenovo_register_leds(hdev);
1238 	if (ret)
1239 		goto err;
1240 
1241 	lenovo_features_set_tpkbd(hdev);
1242 
1243 	return 0;
1244 err:
1245 	sysfs_remove_group(&hdev->dev.kobj, &lenovo_attr_group_tpkbd);
1246 	return ret;
1247 }
1248 
lenovo_probe_cptkbd(struct hid_device * hdev)1249 static int lenovo_probe_cptkbd(struct hid_device *hdev)
1250 {
1251 	int ret;
1252 	struct lenovo_drvdata *cptkbd_data;
1253 
1254 	/* All the custom action happens on the USBMOUSE device for USB */
1255 	if (((hdev->product == USB_DEVICE_ID_LENOVO_CUSBKBD) ||
1256 	    (hdev->product == USB_DEVICE_ID_LENOVO_TPIIUSBKBD)) &&
1257 	    hdev->type != HID_TYPE_USBMOUSE) {
1258 		hid_dbg(hdev, "Ignoring keyboard half of device\n");
1259 		return 0;
1260 	}
1261 
1262 	cptkbd_data = devm_kzalloc(&hdev->dev,
1263 					sizeof(*cptkbd_data),
1264 					GFP_KERNEL);
1265 	if (cptkbd_data == NULL) {
1266 		hid_err(hdev, "can't alloc keyboard descriptor\n");
1267 		return -ENOMEM;
1268 	}
1269 	hid_set_drvdata(hdev, cptkbd_data);
1270 
1271 	/* Set keyboard settings to known state */
1272 	cptkbd_data->middlebutton_state = 0;
1273 	cptkbd_data->fn_lock = true;
1274 	cptkbd_data->sensitivity = 0x05;
1275 	cptkbd_data->middleclick_workaround_cptkbd = true;
1276 	lenovo_features_set_cptkbd(hdev);
1277 
1278 	ret = sysfs_create_group(&hdev->dev.kobj, &lenovo_attr_group_cptkbd);
1279 	if (ret)
1280 		hid_warn(hdev, "Could not create sysfs group: %d\n", ret);
1281 
1282 	return 0;
1283 }
1284 
1285 static struct attribute *lenovo_attributes_tp10ubkbd[] = {
1286 	&dev_attr_fn_lock.attr,
1287 	NULL
1288 };
1289 
1290 static const struct attribute_group lenovo_attr_group_tp10ubkbd = {
1291 	.attrs = lenovo_attributes_tp10ubkbd,
1292 };
1293 
lenovo_probe_tp10ubkbd(struct hid_device * hdev)1294 static int lenovo_probe_tp10ubkbd(struct hid_device *hdev)
1295 {
1296 	struct hid_report_enum *rep_enum;
1297 	struct lenovo_drvdata *data;
1298 	struct hid_report *rep;
1299 	bool found;
1300 	int ret;
1301 
1302 	/*
1303 	 * The LEDs and the Fn-lock functionality use output report 9,
1304 	 * with an application of 0xffa0001, add the LEDs on the interface
1305 	 * with this output report.
1306 	 */
1307 	found = false;
1308 	rep_enum = &hdev->report_enum[HID_OUTPUT_REPORT];
1309 	list_for_each_entry(rep, &rep_enum->report_list, list) {
1310 		if (rep->application == 0xffa00001)
1311 			found = true;
1312 	}
1313 	if (!found)
1314 		return 0;
1315 
1316 	data = devm_kzalloc(&hdev->dev, sizeof(*data), GFP_KERNEL);
1317 	if (!data)
1318 		return -ENOMEM;
1319 
1320 	mutex_init(&data->led_report_mutex);
1321 	INIT_WORK(&data->fn_lock_sync_work, lenovo_tp10ubkbd_sync_fn_lock);
1322 	data->hdev = hdev;
1323 
1324 	hid_set_drvdata(hdev, data);
1325 
1326 	/*
1327 	 * The Thinkpad 10 ultrabook USB kbd dock's Fn-lock defaults to on.
1328 	 * We cannot read the state, only set it, so we force it to on here
1329 	 * (which should be a no-op) to make sure that our state matches the
1330 	 * keyboard's FN-lock state. This is the same as what Windows does.
1331 	 *
1332 	 * For X12 TAB and TAB2, the default windows behaviour Fn-lock Off.
1333 	 * Adding additional check to ensure the behaviour in case of
1334 	 * Thinkpad X12 Tabs.
1335 	 */
1336 
1337 	data->fn_lock = !(hdev->product == USB_DEVICE_ID_LENOVO_X12_TAB ||
1338 			hdev->product == USB_DEVICE_ID_LENOVO_X12_TAB2);
1339 
1340 	lenovo_led_set_tp10ubkbd(hdev, TP10UBKBD_FN_LOCK_LED, data->fn_lock);
1341 
1342 	ret = sysfs_create_group(&hdev->dev.kobj, &lenovo_attr_group_tp10ubkbd);
1343 	if (ret)
1344 		return ret;
1345 
1346 	ret = lenovo_register_leds(hdev);
1347 	if (ret)
1348 		goto err;
1349 
1350 	return 0;
1351 err:
1352 	sysfs_remove_group(&hdev->dev.kobj, &lenovo_attr_group_tp10ubkbd);
1353 	return ret;
1354 }
1355 
lenovo_probe(struct hid_device * hdev,const struct hid_device_id * id)1356 static int lenovo_probe(struct hid_device *hdev,
1357 		const struct hid_device_id *id)
1358 {
1359 	int ret;
1360 
1361 	ret = hid_parse(hdev);
1362 	if (ret) {
1363 		hid_err(hdev, "hid_parse failed\n");
1364 		goto err;
1365 	}
1366 
1367 	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1368 	if (ret) {
1369 		hid_err(hdev, "hid_hw_start failed\n");
1370 		goto err;
1371 	}
1372 
1373 	switch (hdev->product) {
1374 	case USB_DEVICE_ID_LENOVO_TPKBD:
1375 		ret = lenovo_probe_tpkbd(hdev);
1376 		break;
1377 	case USB_DEVICE_ID_LENOVO_CUSBKBD:
1378 	case USB_DEVICE_ID_LENOVO_CBTKBD:
1379 	case USB_DEVICE_ID_LENOVO_TPIIUSBKBD:
1380 	case USB_DEVICE_ID_LENOVO_TPIIBTKBD:
1381 		ret = lenovo_probe_cptkbd(hdev);
1382 		break;
1383 	case USB_DEVICE_ID_LENOVO_X12_TAB:
1384 	case USB_DEVICE_ID_LENOVO_X12_TAB2:
1385 	case USB_DEVICE_ID_LENOVO_TP10UBKBD:
1386 	case USB_DEVICE_ID_LENOVO_X1_TAB:
1387 	case USB_DEVICE_ID_LENOVO_X1_TAB3:
1388 		ret = lenovo_probe_tp10ubkbd(hdev);
1389 		break;
1390 	default:
1391 		ret = 0;
1392 		break;
1393 	}
1394 	if (ret)
1395 		goto err_hid;
1396 
1397 	return 0;
1398 err_hid:
1399 	hid_hw_stop(hdev);
1400 err:
1401 	return ret;
1402 }
1403 
1404 #ifdef CONFIG_PM
lenovo_reset_resume(struct hid_device * hdev)1405 static int lenovo_reset_resume(struct hid_device *hdev)
1406 {
1407 	switch (hdev->product) {
1408 	case USB_DEVICE_ID_LENOVO_CUSBKBD:
1409 	case USB_DEVICE_ID_LENOVO_TPIIUSBKBD:
1410 		if (hdev->type == HID_TYPE_USBMOUSE)
1411 			lenovo_features_set_cptkbd(hdev);
1412 
1413 		break;
1414 	default:
1415 		break;
1416 	}
1417 
1418 	return 0;
1419 }
1420 #endif
1421 
lenovo_remove_tpkbd(struct hid_device * hdev)1422 static void lenovo_remove_tpkbd(struct hid_device *hdev)
1423 {
1424 	struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
1425 
1426 	/*
1427 	 * Only the trackpoint half of the keyboard has drvdata and stuff that
1428 	 * needs unregistering.
1429 	 */
1430 	if (data_pointer == NULL)
1431 		return;
1432 
1433 	sysfs_remove_group(&hdev->dev.kobj,
1434 			&lenovo_attr_group_tpkbd);
1435 
1436 	led_classdev_unregister(&data_pointer->led_micmute);
1437 	led_classdev_unregister(&data_pointer->led_mute);
1438 }
1439 
lenovo_remove_cptkbd(struct hid_device * hdev)1440 static void lenovo_remove_cptkbd(struct hid_device *hdev)
1441 {
1442 	sysfs_remove_group(&hdev->dev.kobj,
1443 			&lenovo_attr_group_cptkbd);
1444 }
1445 
lenovo_remove_tp10ubkbd(struct hid_device * hdev)1446 static void lenovo_remove_tp10ubkbd(struct hid_device *hdev)
1447 {
1448 	struct lenovo_drvdata *data = hid_get_drvdata(hdev);
1449 
1450 	if (data == NULL)
1451 		return;
1452 
1453 	led_classdev_unregister(&data->led_micmute);
1454 	led_classdev_unregister(&data->led_mute);
1455 
1456 	sysfs_remove_group(&hdev->dev.kobj, &lenovo_attr_group_tp10ubkbd);
1457 	cancel_work_sync(&data->fn_lock_sync_work);
1458 }
1459 
lenovo_remove(struct hid_device * hdev)1460 static void lenovo_remove(struct hid_device *hdev)
1461 {
1462 	switch (hdev->product) {
1463 	case USB_DEVICE_ID_LENOVO_TPKBD:
1464 		lenovo_remove_tpkbd(hdev);
1465 		break;
1466 	case USB_DEVICE_ID_LENOVO_CUSBKBD:
1467 	case USB_DEVICE_ID_LENOVO_CBTKBD:
1468 	case USB_DEVICE_ID_LENOVO_TPIIUSBKBD:
1469 	case USB_DEVICE_ID_LENOVO_TPIIBTKBD:
1470 		lenovo_remove_cptkbd(hdev);
1471 		break;
1472 	case USB_DEVICE_ID_LENOVO_X12_TAB:
1473 	case USB_DEVICE_ID_LENOVO_X12_TAB2:
1474 	case USB_DEVICE_ID_LENOVO_TP10UBKBD:
1475 	case USB_DEVICE_ID_LENOVO_X1_TAB:
1476 	case USB_DEVICE_ID_LENOVO_X1_TAB3:
1477 		lenovo_remove_tp10ubkbd(hdev);
1478 		break;
1479 	}
1480 
1481 	hid_hw_stop(hdev);
1482 }
1483 
lenovo_input_configured(struct hid_device * hdev,struct hid_input * hi)1484 static int lenovo_input_configured(struct hid_device *hdev,
1485 		struct hid_input *hi)
1486 {
1487 	switch (hdev->product) {
1488 		case USB_DEVICE_ID_LENOVO_TPKBD:
1489 		case USB_DEVICE_ID_LENOVO_CUSBKBD:
1490 		case USB_DEVICE_ID_LENOVO_CBTKBD:
1491 		case USB_DEVICE_ID_LENOVO_TPIIUSBKBD:
1492 		case USB_DEVICE_ID_LENOVO_TPIIBTKBD:
1493 			if (test_bit(EV_REL, hi->input->evbit)) {
1494 				/* set only for trackpoint device */
1495 				__set_bit(INPUT_PROP_POINTER, hi->input->propbit);
1496 				__set_bit(INPUT_PROP_POINTING_STICK,
1497 						hi->input->propbit);
1498 			}
1499 			break;
1500 	}
1501 
1502 	return 0;
1503 }
1504 
1505 
1506 static const struct hid_device_id lenovo_devices[] = {
1507 	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) },
1508 	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_CUSBKBD) },
1509 	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPIIUSBKBD) },
1510 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_CBTKBD) },
1511 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPIIBTKBD) },
1512 	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPPRODOCK) },
1513 	{ HID_USB_DEVICE(USB_VENDOR_ID_IBM, USB_DEVICE_ID_IBM_SCROLLPOINT_III) },
1514 	{ HID_USB_DEVICE(USB_VENDOR_ID_IBM, USB_DEVICE_ID_IBM_SCROLLPOINT_PRO) },
1515 	{ HID_USB_DEVICE(USB_VENDOR_ID_IBM, USB_DEVICE_ID_IBM_SCROLLPOINT_OPTICAL) },
1516 	{ HID_USB_DEVICE(USB_VENDOR_ID_IBM, USB_DEVICE_ID_IBM_SCROLLPOINT_800DPI_OPTICAL) },
1517 	{ HID_USB_DEVICE(USB_VENDOR_ID_IBM, USB_DEVICE_ID_IBM_SCROLLPOINT_800DPI_OPTICAL_PRO) },
1518 	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_SCROLLPOINT_OPTICAL) },
1519 	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TP10UBKBD) },
1520 	/*
1521 	 * Note bind to the HID_GROUP_GENERIC group, so that we only bind to the keyboard
1522 	 * part, while letting hid-multitouch.c handle the touchpad and trackpoint.
1523 	 */
1524 	{ HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
1525 		     USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_X1_TAB) },
1526 	{ HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
1527 		     USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_X1_TAB3) },
1528 	{ HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
1529 		     USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_X12_TAB) },
1530 	{ HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
1531 		     USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_X12_TAB2) },
1532 	{ }
1533 };
1534 
1535 MODULE_DEVICE_TABLE(hid, lenovo_devices);
1536 
1537 static struct hid_driver lenovo_driver = {
1538 	.name = "lenovo",
1539 	.id_table = lenovo_devices,
1540 	.input_configured = lenovo_input_configured,
1541 	.input_mapping = lenovo_input_mapping,
1542 	.probe = lenovo_probe,
1543 	.remove = lenovo_remove,
1544 	.raw_event = lenovo_raw_event,
1545 	.event = lenovo_event,
1546 	.report_fixup = lenovo_report_fixup,
1547 #ifdef CONFIG_PM
1548 	.reset_resume = lenovo_reset_resume,
1549 #endif
1550 };
1551 module_hid_driver(lenovo_driver);
1552 
1553 MODULE_DESCRIPTION("HID driver for IBM/Lenovo");
1554 MODULE_LICENSE("GPL");
1555