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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
98ee3771 CD |
2 | /* |
3 | * BYD TouchPad PS/2 mouse driver | |
4 | * | |
5 | * Copyright (C) 2015 Chris Diamand <chris@diamand.org> | |
82aaa086 CD |
6 | * Copyright (C) 2015 Richard Pospesel |
7 | * Copyright (C) 2015 Tai Chi Minh Ralph Eastwood | |
8 | * Copyright (C) 2015 Martin Wimpress | |
9 | * Copyright (C) 2015 Jay Kuri | |
98ee3771 CD |
10 | */ |
11 | ||
12 | #include <linux/delay.h> | |
13 | #include <linux/input.h> | |
14 | #include <linux/libps2.h> | |
15 | #include <linux/serio.h> | |
2d5f5611 | 16 | #include <linux/slab.h> |
98ee3771 CD |
17 | |
18 | #include "psmouse.h" | |
19 | #include "byd.h" | |
20 | ||
2d5f5611 | 21 | /* PS2 Bits */ |
98ee3771 CD |
22 | #define PS2_Y_OVERFLOW BIT_MASK(7) |
23 | #define PS2_X_OVERFLOW BIT_MASK(6) | |
24 | #define PS2_Y_SIGN BIT_MASK(5) | |
25 | #define PS2_X_SIGN BIT_MASK(4) | |
26 | #define PS2_ALWAYS_1 BIT_MASK(3) | |
27 | #define PS2_MIDDLE BIT_MASK(2) | |
28 | #define PS2_RIGHT BIT_MASK(1) | |
29 | #define PS2_LEFT BIT_MASK(0) | |
30 | ||
31 | /* | |
2d5f5611 | 32 | * BYD pad constants |
98ee3771 CD |
33 | */ |
34 | ||
2d5f5611 RP |
35 | /* |
36 | * True device resolution is unknown, however experiments show the | |
37 | * resolution is about 111 units/mm. | |
38 | * Absolute coordinate packets are in the range 0-255 for both X and Y | |
39 | * we pick ABS_X/ABS_Y dimensions which are multiples of 256 and in | |
40 | * the right ballpark given the touchpad's physical dimensions and estimate | |
41 | * resolution per spec sheet, device active area dimensions are | |
42 | * 101.6 x 60.1 mm. | |
43 | */ | |
44 | #define BYD_PAD_WIDTH 11264 | |
45 | #define BYD_PAD_HEIGHT 6656 | |
46 | #define BYD_PAD_RESOLUTION 111 | |
98ee3771 | 47 | |
2d5f5611 RP |
48 | /* |
49 | * Given the above dimensions, relative packets velocity is in multiples of | |
50 | * 1 unit / 11 milliseconds. We use this dt to estimate distance traveled | |
51 | */ | |
52 | #define BYD_DT 11 | |
53 | /* Time in jiffies used to timeout various touch events (64 ms) */ | |
54 | #define BYD_TOUCH_TIMEOUT msecs_to_jiffies(64) | |
55 | ||
56 | /* BYD commands reverse engineered from windows driver */ | |
57 | ||
58 | /* | |
59 | * Swipe gesture from off-pad to on-pad | |
60 | * 0 : disable | |
61 | * 1 : enable | |
62 | */ | |
63 | #define BYD_CMD_SET_OFFSCREEN_SWIPE 0x10cc | |
64 | /* | |
65 | * Tap and drag delay time | |
66 | * 0 : disable | |
67 | * 1 - 8 : least to most delay | |
68 | */ | |
69 | #define BYD_CMD_SET_TAP_DRAG_DELAY_TIME 0x10cf | |
70 | /* | |
71 | * Physical buttons function mapping | |
72 | * 0 : enable | |
73 | * 4 : normal | |
74 | * 5 : left button custom command | |
75 | * 6 : right button custom command | |
76 | * 8 : disable | |
77 | */ | |
78 | #define BYD_CMD_SET_PHYSICAL_BUTTONS 0x10d0 | |
79 | /* | |
80 | * Absolute mode (1 byte X/Y resolution) | |
81 | * 0 : disable | |
82 | * 2 : enable | |
83 | */ | |
84 | #define BYD_CMD_SET_ABSOLUTE_MODE 0x10d1 | |
85 | /* | |
86 | * Two finger scrolling | |
87 | * 1 : vertical | |
88 | * 2 : horizontal | |
89 | * 3 : vertical + horizontal | |
90 | * 4 : disable | |
91 | */ | |
92 | #define BYD_CMD_SET_TWO_FINGER_SCROLL 0x10d2 | |
93 | /* | |
94 | * Handedness | |
95 | * 1 : right handed | |
96 | * 2 : left handed | |
97 | */ | |
98 | #define BYD_CMD_SET_HANDEDNESS 0x10d3 | |
99 | /* | |
100 | * Tap to click | |
101 | * 1 : enable | |
102 | * 2 : disable | |
103 | */ | |
104 | #define BYD_CMD_SET_TAP 0x10d4 | |
105 | /* | |
106 | * Tap and drag | |
107 | * 1 : tap and hold to drag | |
108 | * 2 : tap and hold to drag + lock | |
109 | * 3 : disable | |
110 | */ | |
111 | #define BYD_CMD_SET_TAP_DRAG 0x10d5 | |
112 | /* | |
113 | * Touch sensitivity | |
114 | * 1 - 7 : least to most sensitive | |
115 | */ | |
116 | #define BYD_CMD_SET_TOUCH_SENSITIVITY 0x10d6 | |
117 | /* | |
118 | * One finger scrolling | |
119 | * 1 : vertical | |
120 | * 2 : horizontal | |
121 | * 3 : vertical + horizontal | |
122 | * 4 : disable | |
123 | */ | |
124 | #define BYD_CMD_SET_ONE_FINGER_SCROLL 0x10d7 | |
125 | /* | |
126 | * One finger scrolling function | |
127 | * 1 : free scrolling | |
128 | * 2 : edge motion | |
129 | * 3 : free scrolling + edge motion | |
130 | * 4 : disable | |
131 | */ | |
132 | #define BYD_CMD_SET_ONE_FINGER_SCROLL_FUNC 0x10d8 | |
133 | /* | |
134 | * Sliding speed | |
135 | * 1 - 5 : slowest to fastest | |
136 | */ | |
137 | #define BYD_CMD_SET_SLIDING_SPEED 0x10da | |
138 | /* | |
139 | * Edge motion | |
140 | * 1 : disable | |
141 | * 2 : enable when dragging | |
142 | * 3 : enable when dragging and pointing | |
143 | */ | |
144 | #define BYD_CMD_SET_EDGE_MOTION 0x10db | |
145 | /* | |
146 | * Left edge region size | |
147 | * 0 - 7 : smallest to largest width | |
148 | */ | |
149 | #define BYD_CMD_SET_LEFT_EDGE_REGION 0x10dc | |
150 | /* | |
151 | * Top edge region size | |
152 | * 0 - 9 : smallest to largest height | |
153 | */ | |
154 | #define BYD_CMD_SET_TOP_EDGE_REGION 0x10dd | |
155 | /* | |
156 | * Disregard palm press as clicks | |
157 | * 1 - 6 : smallest to largest | |
158 | */ | |
159 | #define BYD_CMD_SET_PALM_CHECK 0x10de | |
160 | /* | |
161 | * Right edge region size | |
162 | * 0 - 7 : smallest to largest width | |
163 | */ | |
164 | #define BYD_CMD_SET_RIGHT_EDGE_REGION 0x10df | |
165 | /* | |
166 | * Bottom edge region size | |
167 | * 0 - 9 : smallest to largest height | |
168 | */ | |
169 | #define BYD_CMD_SET_BOTTOM_EDGE_REGION 0x10e1 | |
170 | /* | |
171 | * Multitouch gestures | |
172 | * 1 : enable | |
173 | * 2 : disable | |
174 | */ | |
175 | #define BYD_CMD_SET_MULTITOUCH 0x10e3 | |
176 | /* | |
177 | * Edge motion speed | |
178 | * 0 : control with finger pressure | |
179 | * 1 - 9 : slowest to fastest | |
180 | */ | |
181 | #define BYD_CMD_SET_EDGE_MOTION_SPEED 0x10e4 | |
182 | /* | |
183 | * Two finger scolling function | |
184 | * 0 : free scrolling | |
185 | * 1 : free scrolling (with momentum) | |
186 | * 2 : edge motion | |
187 | * 3 : free scrolling (with momentum) + edge motion | |
188 | * 4 : disable | |
189 | */ | |
190 | #define BYD_CMD_SET_TWO_FINGER_SCROLL_FUNC 0x10e5 | |
191 | ||
192 | /* | |
193 | * The touchpad generates a mixture of absolute and relative packets, indicated | |
194 | * by the the last byte of each packet being set to one of the following: | |
195 | */ | |
196 | #define BYD_PACKET_ABSOLUTE 0xf8 | |
197 | #define BYD_PACKET_RELATIVE 0x00 | |
198 | /* Multitouch gesture packets */ | |
199 | #define BYD_PACKET_PINCH_IN 0xd8 | |
200 | #define BYD_PACKET_PINCH_OUT 0x28 | |
201 | #define BYD_PACKET_ROTATE_CLOCKWISE 0x29 | |
202 | #define BYD_PACKET_ROTATE_ANTICLOCKWISE 0xd7 | |
203 | #define BYD_PACKET_TWO_FINGER_SCROLL_RIGHT 0x2a | |
204 | #define BYD_PACKET_TWO_FINGER_SCROLL_DOWN 0x2b | |
205 | #define BYD_PACKET_TWO_FINGER_SCROLL_UP 0xd5 | |
206 | #define BYD_PACKET_TWO_FINGER_SCROLL_LEFT 0xd6 | |
207 | #define BYD_PACKET_THREE_FINGER_SWIPE_RIGHT 0x2c | |
208 | #define BYD_PACKET_THREE_FINGER_SWIPE_DOWN 0x2d | |
209 | #define BYD_PACKET_THREE_FINGER_SWIPE_UP 0xd3 | |
210 | #define BYD_PACKET_THREE_FINGER_SWIPE_LEFT 0xd4 | |
211 | #define BYD_PACKET_FOUR_FINGER_DOWN 0x33 | |
212 | #define BYD_PACKET_FOUR_FINGER_UP 0xcd | |
213 | #define BYD_PACKET_REGION_SCROLL_RIGHT 0x35 | |
214 | #define BYD_PACKET_REGION_SCROLL_DOWN 0x36 | |
215 | #define BYD_PACKET_REGION_SCROLL_UP 0xca | |
216 | #define BYD_PACKET_REGION_SCROLL_LEFT 0xcb | |
217 | #define BYD_PACKET_RIGHT_CORNER_CLICK 0xd2 | |
218 | #define BYD_PACKET_LEFT_CORNER_CLICK 0x2e | |
219 | #define BYD_PACKET_LEFT_AND_RIGHT_CORNER_CLICK 0x2f | |
220 | #define BYD_PACKET_ONTO_PAD_SWIPE_RIGHT 0x37 | |
221 | #define BYD_PACKET_ONTO_PAD_SWIPE_DOWN 0x30 | |
222 | #define BYD_PACKET_ONTO_PAD_SWIPE_UP 0xd0 | |
223 | #define BYD_PACKET_ONTO_PAD_SWIPE_LEFT 0xc9 | |
224 | ||
225 | struct byd_data { | |
226 | struct timer_list timer; | |
ce23cbc8 | 227 | struct psmouse *psmouse; |
2d5f5611 RP |
228 | s32 abs_x; |
229 | s32 abs_y; | |
230 | typeof(jiffies) last_touch_time; | |
231 | bool btn_left; | |
232 | bool btn_right; | |
233 | bool touch; | |
234 | }; | |
235 | ||
236 | static void byd_report_input(struct psmouse *psmouse) | |
98ee3771 | 237 | { |
2d5f5611 RP |
238 | struct byd_data *priv = psmouse->private; |
239 | struct input_dev *dev = psmouse->dev; | |
98ee3771 | 240 | |
2d5f5611 RP |
241 | input_report_key(dev, BTN_TOUCH, priv->touch); |
242 | input_report_key(dev, BTN_TOOL_FINGER, priv->touch); | |
98ee3771 | 243 | |
2d5f5611 RP |
244 | input_report_abs(dev, ABS_X, priv->abs_x); |
245 | input_report_abs(dev, ABS_Y, priv->abs_y); | |
246 | input_report_key(dev, BTN_LEFT, priv->btn_left); | |
247 | input_report_key(dev, BTN_RIGHT, priv->btn_right); | |
98ee3771 | 248 | |
2d5f5611 RP |
249 | input_sync(dev); |
250 | } | |
98ee3771 | 251 | |
ce23cbc8 | 252 | static void byd_clear_touch(struct timer_list *t) |
2d5f5611 | 253 | { |
ce23cbc8 KC |
254 | struct byd_data *priv = from_timer(priv, t, timer); |
255 | struct psmouse *psmouse = priv->psmouse; | |
98ee3771 | 256 | |
2d5f5611 RP |
257 | serio_pause_rx(psmouse->ps2dev.serio); |
258 | priv->touch = false; | |
98ee3771 | 259 | |
2d5f5611 RP |
260 | byd_report_input(psmouse); |
261 | ||
262 | serio_continue_rx(psmouse->ps2dev.serio); | |
263 | ||
264 | /* | |
265 | * Move cursor back to center of pad when we lose touch - this | |
266 | * specifically improves user experience when moving cursor with one | |
267 | * finger, and pressing a button with another. | |
268 | */ | |
269 | priv->abs_x = BYD_PAD_WIDTH / 2; | |
270 | priv->abs_y = BYD_PAD_HEIGHT / 2; | |
98ee3771 CD |
271 | } |
272 | ||
273 | static psmouse_ret_t byd_process_byte(struct psmouse *psmouse) | |
274 | { | |
2d5f5611 | 275 | struct byd_data *priv = psmouse->private; |
98ee3771 CD |
276 | u8 *pkt = psmouse->packet; |
277 | ||
278 | if (psmouse->pktcnt > 0 && !(pkt[0] & PS2_ALWAYS_1)) { | |
279 | psmouse_warn(psmouse, "Always_1 bit not 1. pkt[0] = %02x\n", | |
280 | pkt[0]); | |
281 | return PSMOUSE_BAD_DATA; | |
282 | } | |
283 | ||
284 | if (psmouse->pktcnt < psmouse->pktsize) | |
285 | return PSMOUSE_GOOD_DATA; | |
286 | ||
287 | /* Otherwise, a full packet has been received */ | |
288 | switch (pkt[3]) { | |
2d5f5611 RP |
289 | case BYD_PACKET_ABSOLUTE: |
290 | /* Only use absolute packets for the start of movement. */ | |
291 | if (!priv->touch) { | |
292 | /* needed to detect tap */ | |
293 | typeof(jiffies) tap_time = | |
294 | priv->last_touch_time + BYD_TOUCH_TIMEOUT; | |
295 | priv->touch = time_after(jiffies, tap_time); | |
296 | ||
297 | /* init abs position */ | |
298 | priv->abs_x = pkt[1] * (BYD_PAD_WIDTH / 256); | |
299 | priv->abs_y = (255 - pkt[2]) * (BYD_PAD_HEIGHT / 256); | |
300 | } | |
301 | break; | |
302 | case BYD_PACKET_RELATIVE: { | |
98ee3771 CD |
303 | /* Standard packet */ |
304 | /* Sign-extend if a sign bit is set. */ | |
2d5f5611 RP |
305 | u32 signx = pkt[0] & PS2_X_SIGN ? ~0xFF : 0; |
306 | u32 signy = pkt[0] & PS2_Y_SIGN ? ~0xFF : 0; | |
307 | s32 dx = signx | (int) pkt[1]; | |
308 | s32 dy = signy | (int) pkt[2]; | |
98ee3771 | 309 | |
2d5f5611 RP |
310 | /* Update position based on velocity */ |
311 | priv->abs_x += dx * BYD_DT; | |
312 | priv->abs_y -= dy * BYD_DT; | |
98ee3771 | 313 | |
2d5f5611 | 314 | priv->touch = true; |
98ee3771 CD |
315 | break; |
316 | } | |
98ee3771 CD |
317 | default: |
318 | psmouse_warn(psmouse, | |
319 | "Unrecognized Z: pkt = %02x %02x %02x %02x\n", | |
320 | psmouse->packet[0], psmouse->packet[1], | |
321 | psmouse->packet[2], psmouse->packet[3]); | |
322 | return PSMOUSE_BAD_DATA; | |
323 | } | |
324 | ||
2d5f5611 RP |
325 | priv->btn_left = pkt[0] & PS2_LEFT; |
326 | priv->btn_right = pkt[0] & PS2_RIGHT; | |
98ee3771 | 327 | |
2d5f5611 | 328 | byd_report_input(psmouse); |
98ee3771 | 329 | |
2d5f5611 RP |
330 | /* Reset time since last touch. */ |
331 | if (priv->touch) { | |
332 | priv->last_touch_time = jiffies; | |
333 | mod_timer(&priv->timer, jiffies + BYD_TOUCH_TIMEOUT); | |
98ee3771 | 334 | } |
98ee3771 | 335 | |
2d5f5611 | 336 | return PSMOUSE_FULL_PACKET; |
98ee3771 CD |
337 | } |
338 | ||
2d5f5611 | 339 | static int byd_reset_touchpad(struct psmouse *psmouse) |
98ee3771 CD |
340 | { |
341 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
342 | u8 param[4]; | |
2d5f5611 RP |
343 | size_t i; |
344 | ||
08d6ac9e | 345 | static const struct { |
98ee3771 CD |
346 | u16 command; |
347 | u8 arg; | |
348 | } seq[] = { | |
2d5f5611 RP |
349 | /* |
350 | * Intellimouse initialization sequence, to get 4-byte instead | |
351 | * of 3-byte packets. | |
352 | */ | |
98ee3771 CD |
353 | { PSMOUSE_CMD_SETRATE, 0xC8 }, |
354 | { PSMOUSE_CMD_SETRATE, 0x64 }, | |
355 | { PSMOUSE_CMD_SETRATE, 0x50 }, | |
356 | { PSMOUSE_CMD_GETID, 0 }, | |
2d5f5611 RP |
357 | { PSMOUSE_CMD_ENABLE, 0 }, |
358 | /* | |
359 | * BYD-specific initialization, which enables absolute mode and | |
360 | * (if desired), the touchpad's built-in gesture detection. | |
361 | */ | |
362 | { 0x10E2, 0x00 }, | |
363 | { 0x10E0, 0x02 }, | |
364 | /* The touchpad should reply with 4 seemingly-random bytes */ | |
365 | { 0x14E0, 0x01 }, | |
366 | /* Pairs of parameters and values. */ | |
367 | { BYD_CMD_SET_HANDEDNESS, 0x01 }, | |
368 | { BYD_CMD_SET_PHYSICAL_BUTTONS, 0x04 }, | |
369 | { BYD_CMD_SET_TAP, 0x02 }, | |
370 | { BYD_CMD_SET_ONE_FINGER_SCROLL, 0x04 }, | |
371 | { BYD_CMD_SET_ONE_FINGER_SCROLL_FUNC, 0x04 }, | |
372 | { BYD_CMD_SET_EDGE_MOTION, 0x01 }, | |
373 | { BYD_CMD_SET_PALM_CHECK, 0x00 }, | |
374 | { BYD_CMD_SET_MULTITOUCH, 0x02 }, | |
375 | { BYD_CMD_SET_TWO_FINGER_SCROLL, 0x04 }, | |
376 | { BYD_CMD_SET_TWO_FINGER_SCROLL_FUNC, 0x04 }, | |
377 | { BYD_CMD_SET_LEFT_EDGE_REGION, 0x00 }, | |
378 | { BYD_CMD_SET_TOP_EDGE_REGION, 0x00 }, | |
379 | { BYD_CMD_SET_RIGHT_EDGE_REGION, 0x00 }, | |
380 | { BYD_CMD_SET_BOTTOM_EDGE_REGION, 0x00 }, | |
381 | { BYD_CMD_SET_ABSOLUTE_MODE, 0x02 }, | |
382 | /* Finalize initialization. */ | |
383 | { 0x10E0, 0x00 }, | |
384 | { 0x10E2, 0x01 }, | |
98ee3771 CD |
385 | }; |
386 | ||
98ee3771 | 387 | for (i = 0; i < ARRAY_SIZE(seq); ++i) { |
2d5f5611 | 388 | memset(param, 0, sizeof(param)); |
98ee3771 CD |
389 | param[0] = seq[i].arg; |
390 | if (ps2_command(ps2dev, param, seq[i].command)) | |
2d5f5611 | 391 | return -EIO; |
98ee3771 CD |
392 | } |
393 | ||
2d5f5611 | 394 | psmouse_set_state(psmouse, PSMOUSE_ACTIVATED); |
98ee3771 CD |
395 | return 0; |
396 | } | |
397 | ||
398 | static int byd_reconnect(struct psmouse *psmouse) | |
399 | { | |
400 | int retry = 0, error = 0; | |
401 | ||
402 | psmouse_dbg(psmouse, "Reconnect\n"); | |
403 | do { | |
404 | psmouse_reset(psmouse); | |
405 | if (retry) | |
406 | ssleep(1); | |
407 | error = byd_detect(psmouse, 0); | |
408 | } while (error && ++retry < 3); | |
409 | ||
410 | if (error) | |
411 | return error; | |
412 | ||
413 | psmouse_dbg(psmouse, "Reconnected after %d attempts\n", retry); | |
414 | ||
415 | error = byd_reset_touchpad(psmouse); | |
416 | if (error) { | |
417 | psmouse_err(psmouse, "Unable to initialize device\n"); | |
418 | return error; | |
419 | } | |
420 | ||
421 | return 0; | |
422 | } | |
423 | ||
2d5f5611 RP |
424 | static void byd_disconnect(struct psmouse *psmouse) |
425 | { | |
426 | struct byd_data *priv = psmouse->private; | |
427 | ||
428 | if (priv) { | |
429 | del_timer(&priv->timer); | |
430 | kfree(psmouse->private); | |
431 | psmouse->private = NULL; | |
432 | } | |
433 | } | |
434 | ||
435 | int byd_detect(struct psmouse *psmouse, bool set_properties) | |
436 | { | |
437 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
438 | u8 param[4] = {0x03, 0x00, 0x00, 0x00}; | |
439 | ||
440 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES)) | |
441 | return -1; | |
442 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES)) | |
443 | return -1; | |
444 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES)) | |
445 | return -1; | |
446 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES)) | |
447 | return -1; | |
448 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) | |
449 | return -1; | |
450 | ||
451 | if (param[1] != 0x03 || param[2] != 0x64) | |
452 | return -ENODEV; | |
453 | ||
454 | psmouse_dbg(psmouse, "BYD touchpad detected\n"); | |
455 | ||
456 | if (set_properties) { | |
457 | psmouse->vendor = "BYD"; | |
458 | psmouse->name = "TouchPad"; | |
459 | } | |
460 | ||
461 | return 0; | |
462 | } | |
463 | ||
98ee3771 CD |
464 | int byd_init(struct psmouse *psmouse) |
465 | { | |
466 | struct input_dev *dev = psmouse->dev; | |
2d5f5611 | 467 | struct byd_data *priv; |
98ee3771 CD |
468 | |
469 | if (psmouse_reset(psmouse)) | |
470 | return -EIO; | |
471 | ||
472 | if (byd_reset_touchpad(psmouse)) | |
473 | return -EIO; | |
474 | ||
2d5f5611 RP |
475 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); |
476 | if (!priv) | |
477 | return -ENOMEM; | |
478 | ||
ce23cbc8 KC |
479 | priv->psmouse = psmouse; |
480 | timer_setup(&priv->timer, byd_clear_touch, 0); | |
2d5f5611 RP |
481 | |
482 | psmouse->private = priv; | |
483 | psmouse->disconnect = byd_disconnect; | |
98ee3771 CD |
484 | psmouse->reconnect = byd_reconnect; |
485 | psmouse->protocol_handler = byd_process_byte; | |
486 | psmouse->pktsize = 4; | |
487 | psmouse->resync_time = 0; | |
488 | ||
2d5f5611 RP |
489 | __set_bit(INPUT_PROP_POINTER, dev->propbit); |
490 | /* Touchpad */ | |
491 | __set_bit(BTN_TOUCH, dev->keybit); | |
492 | __set_bit(BTN_TOOL_FINGER, dev->keybit); | |
493 | /* Buttons */ | |
494 | __set_bit(BTN_LEFT, dev->keybit); | |
495 | __set_bit(BTN_RIGHT, dev->keybit); | |
496 | __clear_bit(BTN_MIDDLE, dev->keybit); | |
497 | ||
498 | /* Absolute position */ | |
499 | __set_bit(EV_ABS, dev->evbit); | |
500 | input_set_abs_params(dev, ABS_X, 0, BYD_PAD_WIDTH, 0, 0); | |
501 | input_set_abs_params(dev, ABS_Y, 0, BYD_PAD_HEIGHT, 0, 0); | |
502 | input_abs_set_res(dev, ABS_X, BYD_PAD_RESOLUTION); | |
503 | input_abs_set_res(dev, ABS_Y, BYD_PAD_RESOLUTION); | |
504 | /* No relative support */ | |
505 | __clear_bit(EV_REL, dev->evbit); | |
506 | __clear_bit(REL_X, dev->relbit); | |
507 | __clear_bit(REL_Y, dev->relbit); | |
98ee3771 CD |
508 | |
509 | return 0; | |
510 | } |