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98ee3771 CD |
1 | /* |
2 | * BYD TouchPad PS/2 mouse driver | |
3 | * | |
4 | * Copyright (C) 2015 Chris Diamand <chris@diamand.org> | |
82aaa086 CD |
5 | * Copyright (C) 2015 Richard Pospesel |
6 | * Copyright (C) 2015 Tai Chi Minh Ralph Eastwood | |
7 | * Copyright (C) 2015 Martin Wimpress | |
8 | * Copyright (C) 2015 Jay Kuri | |
98ee3771 CD |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License version 2 as published by | |
12 | * the Free Software Foundation. | |
13 | */ | |
14 | ||
15 | #include <linux/delay.h> | |
16 | #include <linux/input.h> | |
17 | #include <linux/libps2.h> | |
18 | #include <linux/serio.h> | |
2d5f5611 | 19 | #include <linux/slab.h> |
98ee3771 CD |
20 | |
21 | #include "psmouse.h" | |
22 | #include "byd.h" | |
23 | ||
2d5f5611 | 24 | /* PS2 Bits */ |
98ee3771 CD |
25 | #define PS2_Y_OVERFLOW BIT_MASK(7) |
26 | #define PS2_X_OVERFLOW BIT_MASK(6) | |
27 | #define PS2_Y_SIGN BIT_MASK(5) | |
28 | #define PS2_X_SIGN BIT_MASK(4) | |
29 | #define PS2_ALWAYS_1 BIT_MASK(3) | |
30 | #define PS2_MIDDLE BIT_MASK(2) | |
31 | #define PS2_RIGHT BIT_MASK(1) | |
32 | #define PS2_LEFT BIT_MASK(0) | |
33 | ||
34 | /* | |
2d5f5611 | 35 | * BYD pad constants |
98ee3771 CD |
36 | */ |
37 | ||
2d5f5611 RP |
38 | /* |
39 | * True device resolution is unknown, however experiments show the | |
40 | * resolution is about 111 units/mm. | |
41 | * Absolute coordinate packets are in the range 0-255 for both X and Y | |
42 | * we pick ABS_X/ABS_Y dimensions which are multiples of 256 and in | |
43 | * the right ballpark given the touchpad's physical dimensions and estimate | |
44 | * resolution per spec sheet, device active area dimensions are | |
45 | * 101.6 x 60.1 mm. | |
46 | */ | |
47 | #define BYD_PAD_WIDTH 11264 | |
48 | #define BYD_PAD_HEIGHT 6656 | |
49 | #define BYD_PAD_RESOLUTION 111 | |
98ee3771 | 50 | |
2d5f5611 RP |
51 | /* |
52 | * Given the above dimensions, relative packets velocity is in multiples of | |
53 | * 1 unit / 11 milliseconds. We use this dt to estimate distance traveled | |
54 | */ | |
55 | #define BYD_DT 11 | |
56 | /* Time in jiffies used to timeout various touch events (64 ms) */ | |
57 | #define BYD_TOUCH_TIMEOUT msecs_to_jiffies(64) | |
58 | ||
59 | /* BYD commands reverse engineered from windows driver */ | |
60 | ||
61 | /* | |
62 | * Swipe gesture from off-pad to on-pad | |
63 | * 0 : disable | |
64 | * 1 : enable | |
65 | */ | |
66 | #define BYD_CMD_SET_OFFSCREEN_SWIPE 0x10cc | |
67 | /* | |
68 | * Tap and drag delay time | |
69 | * 0 : disable | |
70 | * 1 - 8 : least to most delay | |
71 | */ | |
72 | #define BYD_CMD_SET_TAP_DRAG_DELAY_TIME 0x10cf | |
73 | /* | |
74 | * Physical buttons function mapping | |
75 | * 0 : enable | |
76 | * 4 : normal | |
77 | * 5 : left button custom command | |
78 | * 6 : right button custom command | |
79 | * 8 : disable | |
80 | */ | |
81 | #define BYD_CMD_SET_PHYSICAL_BUTTONS 0x10d0 | |
82 | /* | |
83 | * Absolute mode (1 byte X/Y resolution) | |
84 | * 0 : disable | |
85 | * 2 : enable | |
86 | */ | |
87 | #define BYD_CMD_SET_ABSOLUTE_MODE 0x10d1 | |
88 | /* | |
89 | * Two finger scrolling | |
90 | * 1 : vertical | |
91 | * 2 : horizontal | |
92 | * 3 : vertical + horizontal | |
93 | * 4 : disable | |
94 | */ | |
95 | #define BYD_CMD_SET_TWO_FINGER_SCROLL 0x10d2 | |
96 | /* | |
97 | * Handedness | |
98 | * 1 : right handed | |
99 | * 2 : left handed | |
100 | */ | |
101 | #define BYD_CMD_SET_HANDEDNESS 0x10d3 | |
102 | /* | |
103 | * Tap to click | |
104 | * 1 : enable | |
105 | * 2 : disable | |
106 | */ | |
107 | #define BYD_CMD_SET_TAP 0x10d4 | |
108 | /* | |
109 | * Tap and drag | |
110 | * 1 : tap and hold to drag | |
111 | * 2 : tap and hold to drag + lock | |
112 | * 3 : disable | |
113 | */ | |
114 | #define BYD_CMD_SET_TAP_DRAG 0x10d5 | |
115 | /* | |
116 | * Touch sensitivity | |
117 | * 1 - 7 : least to most sensitive | |
118 | */ | |
119 | #define BYD_CMD_SET_TOUCH_SENSITIVITY 0x10d6 | |
120 | /* | |
121 | * One finger scrolling | |
122 | * 1 : vertical | |
123 | * 2 : horizontal | |
124 | * 3 : vertical + horizontal | |
125 | * 4 : disable | |
126 | */ | |
127 | #define BYD_CMD_SET_ONE_FINGER_SCROLL 0x10d7 | |
128 | /* | |
129 | * One finger scrolling function | |
130 | * 1 : free scrolling | |
131 | * 2 : edge motion | |
132 | * 3 : free scrolling + edge motion | |
133 | * 4 : disable | |
134 | */ | |
135 | #define BYD_CMD_SET_ONE_FINGER_SCROLL_FUNC 0x10d8 | |
136 | /* | |
137 | * Sliding speed | |
138 | * 1 - 5 : slowest to fastest | |
139 | */ | |
140 | #define BYD_CMD_SET_SLIDING_SPEED 0x10da | |
141 | /* | |
142 | * Edge motion | |
143 | * 1 : disable | |
144 | * 2 : enable when dragging | |
145 | * 3 : enable when dragging and pointing | |
146 | */ | |
147 | #define BYD_CMD_SET_EDGE_MOTION 0x10db | |
148 | /* | |
149 | * Left edge region size | |
150 | * 0 - 7 : smallest to largest width | |
151 | */ | |
152 | #define BYD_CMD_SET_LEFT_EDGE_REGION 0x10dc | |
153 | /* | |
154 | * Top edge region size | |
155 | * 0 - 9 : smallest to largest height | |
156 | */ | |
157 | #define BYD_CMD_SET_TOP_EDGE_REGION 0x10dd | |
158 | /* | |
159 | * Disregard palm press as clicks | |
160 | * 1 - 6 : smallest to largest | |
161 | */ | |
162 | #define BYD_CMD_SET_PALM_CHECK 0x10de | |
163 | /* | |
164 | * Right edge region size | |
165 | * 0 - 7 : smallest to largest width | |
166 | */ | |
167 | #define BYD_CMD_SET_RIGHT_EDGE_REGION 0x10df | |
168 | /* | |
169 | * Bottom edge region size | |
170 | * 0 - 9 : smallest to largest height | |
171 | */ | |
172 | #define BYD_CMD_SET_BOTTOM_EDGE_REGION 0x10e1 | |
173 | /* | |
174 | * Multitouch gestures | |
175 | * 1 : enable | |
176 | * 2 : disable | |
177 | */ | |
178 | #define BYD_CMD_SET_MULTITOUCH 0x10e3 | |
179 | /* | |
180 | * Edge motion speed | |
181 | * 0 : control with finger pressure | |
182 | * 1 - 9 : slowest to fastest | |
183 | */ | |
184 | #define BYD_CMD_SET_EDGE_MOTION_SPEED 0x10e4 | |
185 | /* | |
186 | * Two finger scolling function | |
187 | * 0 : free scrolling | |
188 | * 1 : free scrolling (with momentum) | |
189 | * 2 : edge motion | |
190 | * 3 : free scrolling (with momentum) + edge motion | |
191 | * 4 : disable | |
192 | */ | |
193 | #define BYD_CMD_SET_TWO_FINGER_SCROLL_FUNC 0x10e5 | |
194 | ||
195 | /* | |
196 | * The touchpad generates a mixture of absolute and relative packets, indicated | |
197 | * by the the last byte of each packet being set to one of the following: | |
198 | */ | |
199 | #define BYD_PACKET_ABSOLUTE 0xf8 | |
200 | #define BYD_PACKET_RELATIVE 0x00 | |
201 | /* Multitouch gesture packets */ | |
202 | #define BYD_PACKET_PINCH_IN 0xd8 | |
203 | #define BYD_PACKET_PINCH_OUT 0x28 | |
204 | #define BYD_PACKET_ROTATE_CLOCKWISE 0x29 | |
205 | #define BYD_PACKET_ROTATE_ANTICLOCKWISE 0xd7 | |
206 | #define BYD_PACKET_TWO_FINGER_SCROLL_RIGHT 0x2a | |
207 | #define BYD_PACKET_TWO_FINGER_SCROLL_DOWN 0x2b | |
208 | #define BYD_PACKET_TWO_FINGER_SCROLL_UP 0xd5 | |
209 | #define BYD_PACKET_TWO_FINGER_SCROLL_LEFT 0xd6 | |
210 | #define BYD_PACKET_THREE_FINGER_SWIPE_RIGHT 0x2c | |
211 | #define BYD_PACKET_THREE_FINGER_SWIPE_DOWN 0x2d | |
212 | #define BYD_PACKET_THREE_FINGER_SWIPE_UP 0xd3 | |
213 | #define BYD_PACKET_THREE_FINGER_SWIPE_LEFT 0xd4 | |
214 | #define BYD_PACKET_FOUR_FINGER_DOWN 0x33 | |
215 | #define BYD_PACKET_FOUR_FINGER_UP 0xcd | |
216 | #define BYD_PACKET_REGION_SCROLL_RIGHT 0x35 | |
217 | #define BYD_PACKET_REGION_SCROLL_DOWN 0x36 | |
218 | #define BYD_PACKET_REGION_SCROLL_UP 0xca | |
219 | #define BYD_PACKET_REGION_SCROLL_LEFT 0xcb | |
220 | #define BYD_PACKET_RIGHT_CORNER_CLICK 0xd2 | |
221 | #define BYD_PACKET_LEFT_CORNER_CLICK 0x2e | |
222 | #define BYD_PACKET_LEFT_AND_RIGHT_CORNER_CLICK 0x2f | |
223 | #define BYD_PACKET_ONTO_PAD_SWIPE_RIGHT 0x37 | |
224 | #define BYD_PACKET_ONTO_PAD_SWIPE_DOWN 0x30 | |
225 | #define BYD_PACKET_ONTO_PAD_SWIPE_UP 0xd0 | |
226 | #define BYD_PACKET_ONTO_PAD_SWIPE_LEFT 0xc9 | |
227 | ||
228 | struct byd_data { | |
229 | struct timer_list timer; | |
230 | s32 abs_x; | |
231 | s32 abs_y; | |
232 | typeof(jiffies) last_touch_time; | |
233 | bool btn_left; | |
234 | bool btn_right; | |
235 | bool touch; | |
236 | }; | |
237 | ||
238 | static void byd_report_input(struct psmouse *psmouse) | |
98ee3771 | 239 | { |
2d5f5611 RP |
240 | struct byd_data *priv = psmouse->private; |
241 | struct input_dev *dev = psmouse->dev; | |
98ee3771 | 242 | |
2d5f5611 RP |
243 | input_report_key(dev, BTN_TOUCH, priv->touch); |
244 | input_report_key(dev, BTN_TOOL_FINGER, priv->touch); | |
98ee3771 | 245 | |
2d5f5611 RP |
246 | input_report_abs(dev, ABS_X, priv->abs_x); |
247 | input_report_abs(dev, ABS_Y, priv->abs_y); | |
248 | input_report_key(dev, BTN_LEFT, priv->btn_left); | |
249 | input_report_key(dev, BTN_RIGHT, priv->btn_right); | |
98ee3771 | 250 | |
2d5f5611 RP |
251 | input_sync(dev); |
252 | } | |
98ee3771 | 253 | |
2d5f5611 RP |
254 | static void byd_clear_touch(unsigned long data) |
255 | { | |
256 | struct psmouse *psmouse = (struct psmouse *)data; | |
257 | struct byd_data *priv = psmouse->private; | |
98ee3771 | 258 | |
2d5f5611 RP |
259 | serio_pause_rx(psmouse->ps2dev.serio); |
260 | priv->touch = false; | |
98ee3771 | 261 | |
2d5f5611 RP |
262 | byd_report_input(psmouse); |
263 | ||
264 | serio_continue_rx(psmouse->ps2dev.serio); | |
265 | ||
266 | /* | |
267 | * Move cursor back to center of pad when we lose touch - this | |
268 | * specifically improves user experience when moving cursor with one | |
269 | * finger, and pressing a button with another. | |
270 | */ | |
271 | priv->abs_x = BYD_PAD_WIDTH / 2; | |
272 | priv->abs_y = BYD_PAD_HEIGHT / 2; | |
98ee3771 CD |
273 | } |
274 | ||
275 | static psmouse_ret_t byd_process_byte(struct psmouse *psmouse) | |
276 | { | |
2d5f5611 | 277 | struct byd_data *priv = psmouse->private; |
98ee3771 CD |
278 | u8 *pkt = psmouse->packet; |
279 | ||
280 | if (psmouse->pktcnt > 0 && !(pkt[0] & PS2_ALWAYS_1)) { | |
281 | psmouse_warn(psmouse, "Always_1 bit not 1. pkt[0] = %02x\n", | |
282 | pkt[0]); | |
283 | return PSMOUSE_BAD_DATA; | |
284 | } | |
285 | ||
286 | if (psmouse->pktcnt < psmouse->pktsize) | |
287 | return PSMOUSE_GOOD_DATA; | |
288 | ||
289 | /* Otherwise, a full packet has been received */ | |
290 | switch (pkt[3]) { | |
2d5f5611 RP |
291 | case BYD_PACKET_ABSOLUTE: |
292 | /* Only use absolute packets for the start of movement. */ | |
293 | if (!priv->touch) { | |
294 | /* needed to detect tap */ | |
295 | typeof(jiffies) tap_time = | |
296 | priv->last_touch_time + BYD_TOUCH_TIMEOUT; | |
297 | priv->touch = time_after(jiffies, tap_time); | |
298 | ||
299 | /* init abs position */ | |
300 | priv->abs_x = pkt[1] * (BYD_PAD_WIDTH / 256); | |
301 | priv->abs_y = (255 - pkt[2]) * (BYD_PAD_HEIGHT / 256); | |
302 | } | |
303 | break; | |
304 | case BYD_PACKET_RELATIVE: { | |
98ee3771 CD |
305 | /* Standard packet */ |
306 | /* Sign-extend if a sign bit is set. */ | |
2d5f5611 RP |
307 | u32 signx = pkt[0] & PS2_X_SIGN ? ~0xFF : 0; |
308 | u32 signy = pkt[0] & PS2_Y_SIGN ? ~0xFF : 0; | |
309 | s32 dx = signx | (int) pkt[1]; | |
310 | s32 dy = signy | (int) pkt[2]; | |
98ee3771 | 311 | |
2d5f5611 RP |
312 | /* Update position based on velocity */ |
313 | priv->abs_x += dx * BYD_DT; | |
314 | priv->abs_y -= dy * BYD_DT; | |
98ee3771 | 315 | |
2d5f5611 | 316 | priv->touch = true; |
98ee3771 CD |
317 | break; |
318 | } | |
98ee3771 CD |
319 | default: |
320 | psmouse_warn(psmouse, | |
321 | "Unrecognized Z: pkt = %02x %02x %02x %02x\n", | |
322 | psmouse->packet[0], psmouse->packet[1], | |
323 | psmouse->packet[2], psmouse->packet[3]); | |
324 | return PSMOUSE_BAD_DATA; | |
325 | } | |
326 | ||
2d5f5611 RP |
327 | priv->btn_left = pkt[0] & PS2_LEFT; |
328 | priv->btn_right = pkt[0] & PS2_RIGHT; | |
98ee3771 | 329 | |
2d5f5611 | 330 | byd_report_input(psmouse); |
98ee3771 | 331 | |
2d5f5611 RP |
332 | /* Reset time since last touch. */ |
333 | if (priv->touch) { | |
334 | priv->last_touch_time = jiffies; | |
335 | mod_timer(&priv->timer, jiffies + BYD_TOUCH_TIMEOUT); | |
98ee3771 | 336 | } |
98ee3771 | 337 | |
2d5f5611 | 338 | return PSMOUSE_FULL_PACKET; |
98ee3771 CD |
339 | } |
340 | ||
2d5f5611 | 341 | static int byd_reset_touchpad(struct psmouse *psmouse) |
98ee3771 CD |
342 | { |
343 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
344 | u8 param[4]; | |
2d5f5611 RP |
345 | size_t i; |
346 | ||
98ee3771 CD |
347 | const struct { |
348 | u16 command; | |
349 | u8 arg; | |
350 | } seq[] = { | |
2d5f5611 RP |
351 | /* |
352 | * Intellimouse initialization sequence, to get 4-byte instead | |
353 | * of 3-byte packets. | |
354 | */ | |
98ee3771 CD |
355 | { PSMOUSE_CMD_SETRATE, 0xC8 }, |
356 | { PSMOUSE_CMD_SETRATE, 0x64 }, | |
357 | { PSMOUSE_CMD_SETRATE, 0x50 }, | |
358 | { PSMOUSE_CMD_GETID, 0 }, | |
2d5f5611 RP |
359 | { PSMOUSE_CMD_ENABLE, 0 }, |
360 | /* | |
361 | * BYD-specific initialization, which enables absolute mode and | |
362 | * (if desired), the touchpad's built-in gesture detection. | |
363 | */ | |
364 | { 0x10E2, 0x00 }, | |
365 | { 0x10E0, 0x02 }, | |
366 | /* The touchpad should reply with 4 seemingly-random bytes */ | |
367 | { 0x14E0, 0x01 }, | |
368 | /* Pairs of parameters and values. */ | |
369 | { BYD_CMD_SET_HANDEDNESS, 0x01 }, | |
370 | { BYD_CMD_SET_PHYSICAL_BUTTONS, 0x04 }, | |
371 | { BYD_CMD_SET_TAP, 0x02 }, | |
372 | { BYD_CMD_SET_ONE_FINGER_SCROLL, 0x04 }, | |
373 | { BYD_CMD_SET_ONE_FINGER_SCROLL_FUNC, 0x04 }, | |
374 | { BYD_CMD_SET_EDGE_MOTION, 0x01 }, | |
375 | { BYD_CMD_SET_PALM_CHECK, 0x00 }, | |
376 | { BYD_CMD_SET_MULTITOUCH, 0x02 }, | |
377 | { BYD_CMD_SET_TWO_FINGER_SCROLL, 0x04 }, | |
378 | { BYD_CMD_SET_TWO_FINGER_SCROLL_FUNC, 0x04 }, | |
379 | { BYD_CMD_SET_LEFT_EDGE_REGION, 0x00 }, | |
380 | { BYD_CMD_SET_TOP_EDGE_REGION, 0x00 }, | |
381 | { BYD_CMD_SET_RIGHT_EDGE_REGION, 0x00 }, | |
382 | { BYD_CMD_SET_BOTTOM_EDGE_REGION, 0x00 }, | |
383 | { BYD_CMD_SET_ABSOLUTE_MODE, 0x02 }, | |
384 | /* Finalize initialization. */ | |
385 | { 0x10E0, 0x00 }, | |
386 | { 0x10E2, 0x01 }, | |
98ee3771 CD |
387 | }; |
388 | ||
98ee3771 | 389 | for (i = 0; i < ARRAY_SIZE(seq); ++i) { |
2d5f5611 | 390 | memset(param, 0, sizeof(param)); |
98ee3771 CD |
391 | param[0] = seq[i].arg; |
392 | if (ps2_command(ps2dev, param, seq[i].command)) | |
2d5f5611 | 393 | return -EIO; |
98ee3771 CD |
394 | } |
395 | ||
2d5f5611 | 396 | psmouse_set_state(psmouse, PSMOUSE_ACTIVATED); |
98ee3771 CD |
397 | return 0; |
398 | } | |
399 | ||
400 | static int byd_reconnect(struct psmouse *psmouse) | |
401 | { | |
402 | int retry = 0, error = 0; | |
403 | ||
404 | psmouse_dbg(psmouse, "Reconnect\n"); | |
405 | do { | |
406 | psmouse_reset(psmouse); | |
407 | if (retry) | |
408 | ssleep(1); | |
409 | error = byd_detect(psmouse, 0); | |
410 | } while (error && ++retry < 3); | |
411 | ||
412 | if (error) | |
413 | return error; | |
414 | ||
415 | psmouse_dbg(psmouse, "Reconnected after %d attempts\n", retry); | |
416 | ||
417 | error = byd_reset_touchpad(psmouse); | |
418 | if (error) { | |
419 | psmouse_err(psmouse, "Unable to initialize device\n"); | |
420 | return error; | |
421 | } | |
422 | ||
423 | return 0; | |
424 | } | |
425 | ||
2d5f5611 RP |
426 | static void byd_disconnect(struct psmouse *psmouse) |
427 | { | |
428 | struct byd_data *priv = psmouse->private; | |
429 | ||
430 | if (priv) { | |
431 | del_timer(&priv->timer); | |
432 | kfree(psmouse->private); | |
433 | psmouse->private = NULL; | |
434 | } | |
435 | } | |
436 | ||
437 | int byd_detect(struct psmouse *psmouse, bool set_properties) | |
438 | { | |
439 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
440 | u8 param[4] = {0x03, 0x00, 0x00, 0x00}; | |
441 | ||
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_SETRES)) | |
449 | return -1; | |
450 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) | |
451 | return -1; | |
452 | ||
453 | if (param[1] != 0x03 || param[2] != 0x64) | |
454 | return -ENODEV; | |
455 | ||
456 | psmouse_dbg(psmouse, "BYD touchpad detected\n"); | |
457 | ||
458 | if (set_properties) { | |
459 | psmouse->vendor = "BYD"; | |
460 | psmouse->name = "TouchPad"; | |
461 | } | |
462 | ||
463 | return 0; | |
464 | } | |
465 | ||
98ee3771 CD |
466 | int byd_init(struct psmouse *psmouse) |
467 | { | |
468 | struct input_dev *dev = psmouse->dev; | |
2d5f5611 | 469 | struct byd_data *priv; |
98ee3771 CD |
470 | |
471 | if (psmouse_reset(psmouse)) | |
472 | return -EIO; | |
473 | ||
474 | if (byd_reset_touchpad(psmouse)) | |
475 | return -EIO; | |
476 | ||
2d5f5611 RP |
477 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); |
478 | if (!priv) | |
479 | return -ENOMEM; | |
480 | ||
2d5f5611 RP |
481 | setup_timer(&priv->timer, byd_clear_touch, (unsigned long) psmouse); |
482 | ||
483 | psmouse->private = priv; | |
484 | psmouse->disconnect = byd_disconnect; | |
98ee3771 CD |
485 | psmouse->reconnect = byd_reconnect; |
486 | psmouse->protocol_handler = byd_process_byte; | |
487 | psmouse->pktsize = 4; | |
488 | psmouse->resync_time = 0; | |
489 | ||
2d5f5611 RP |
490 | __set_bit(INPUT_PROP_POINTER, dev->propbit); |
491 | /* Touchpad */ | |
492 | __set_bit(BTN_TOUCH, dev->keybit); | |
493 | __set_bit(BTN_TOOL_FINGER, dev->keybit); | |
494 | /* Buttons */ | |
495 | __set_bit(BTN_LEFT, dev->keybit); | |
496 | __set_bit(BTN_RIGHT, dev->keybit); | |
497 | __clear_bit(BTN_MIDDLE, dev->keybit); | |
498 | ||
499 | /* Absolute position */ | |
500 | __set_bit(EV_ABS, dev->evbit); | |
501 | input_set_abs_params(dev, ABS_X, 0, BYD_PAD_WIDTH, 0, 0); | |
502 | input_set_abs_params(dev, ABS_Y, 0, BYD_PAD_HEIGHT, 0, 0); | |
503 | input_abs_set_res(dev, ABS_X, BYD_PAD_RESOLUTION); | |
504 | input_abs_set_res(dev, ABS_Y, BYD_PAD_RESOLUTION); | |
505 | /* No relative support */ | |
506 | __clear_bit(EV_REL, dev->evbit); | |
507 | __clear_bit(REL_X, dev->relbit); | |
508 | __clear_bit(REL_Y, dev->relbit); | |
98ee3771 CD |
509 | |
510 | return 0; | |
511 | } |