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mfd: wm8350-i2c: Make sure the i2c regmap functions are compiled
[linux/fpc-iii.git] / drivers / input / mouse / alps.c
blob642a42f719b1033a9e067e5142e2d1b917774946
1 /*
2 * ALPS touchpad PS/2 mouse driver
3 *
4 * Copyright (c) 2003 Neil Brown <neilb@cse.unsw.edu.au>
5 * Copyright (c) 2003-2005 Peter Osterlund <petero2@telia.com>
6 * Copyright (c) 2004 Dmitry Torokhov <dtor@mail.ru>
7 * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
8 * Copyright (c) 2009 Sebastian Kapfer <sebastian_kapfer@gmx.net>
9 *
10 * ALPS detection, tap switching and status querying info is taken from
11 * tpconfig utility (by C. Scott Ananian and Bruce Kall).
12 *
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License version 2 as published by
15 * the Free Software Foundation.
16 */
17
18 #include <linux/slab.h>
19 #include <linux/input.h>
20 #include <linux/input/mt.h>
21 #include <linux/serio.h>
22 #include <linux/libps2.h>
23
24 #include "psmouse.h"
25 #include "alps.h"
26
27 /*
28 * Definitions for ALPS version 3 and 4 command mode protocol
29 */
30 #define ALPS_CMD_NIBBLE_10 0x01f2
31
32 #define ALPS_REG_BASE_RUSHMORE 0xc2c0
33 #define ALPS_REG_BASE_PINNACLE 0x0000
34
35 static const struct alps_nibble_commands alps_v3_nibble_commands[] = {
36 { PSMOUSE_CMD_SETPOLL, 0x00 }, /* 0 */
37 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */
38 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */
39 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */
40 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */
41 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */
42 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */
43 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */
44 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */
45 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */
46 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */
47 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */
48 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */
49 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */
50 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */
51 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */
52 };
53
54 static const struct alps_nibble_commands alps_v4_nibble_commands[] = {
55 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */
56 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */
57 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */
58 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */
59 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */
60 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */
61 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */
62 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */
63 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */
64 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */
65 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */
66 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */
67 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */
68 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */
69 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */
70 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */
71 };
72
73
74 #define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */
75 #define ALPS_PASS 0x04 /* device has a pass-through port */
76
77 #define ALPS_WHEEL 0x08 /* hardware wheel present */
78 #define ALPS_FW_BK_1 0x10 /* front & back buttons present */
79 #define ALPS_FW_BK_2 0x20 /* front & back buttons present */
80 #define ALPS_FOUR_BUTTONS 0x40 /* 4 direction button present */
81 #define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with
82 6-byte ALPS packet */
83
84 static const struct alps_model_info alps_model_data[] = {
85 { { 0x32, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Toshiba Salellite Pro M10 */
86 { { 0x33, 0x02, 0x0a }, 0x00, ALPS_PROTO_V1, 0x88, 0xf8, 0 }, /* UMAX-530T */
87 { { 0x53, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
88 { { 0x53, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
89 { { 0x60, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, /* HP ze1115 */
90 { { 0x63, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
91 { { 0x63, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
92 { { 0x63, 0x02, 0x28 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Fujitsu Siemens S6010 */
93 { { 0x63, 0x02, 0x3c }, 0x00, ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL }, /* Toshiba Satellite S2400-103 */
94 { { 0x63, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 }, /* NEC Versa L320 */
95 { { 0x63, 0x02, 0x64 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
96 { { 0x63, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D800 */
97 { { 0x73, 0x00, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT }, /* ThinkPad R61 8918-5QG */
98 { { 0x73, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
99 { { 0x73, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Ahtec Laptop */
100 { { 0x20, 0x02, 0x0e }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* XXX */
101 { { 0x22, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT },
102 { { 0x22, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D600 */
103 /* Dell Latitude E5500, E6400, E6500, Precision M4400 */
104 { { 0x62, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf,
105 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED },
106 { { 0x73, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS }, /* Dell Vostro 1400 */
107 { { 0x52, 0x01, 0x14 }, 0x00, ALPS_PROTO_V2, 0xff, 0xff,
108 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED }, /* Toshiba Tecra A11-11L */
109 { { 0x73, 0x02, 0x64 }, 0x8a, ALPS_PROTO_V4, 0x8f, 0x8f, 0 },
110 };
111
112 static void alps_set_abs_params_st(struct alps_data *priv,
113 struct input_dev *dev1);
114 static void alps_set_abs_params_mt(struct alps_data *priv,
115 struct input_dev *dev1);
116
117 /*
118 * XXX - this entry is suspicious. First byte has zero lower nibble,
119 * which is what a normal mouse would report. Also, the value 0x0e
120 * isn't valid per PS/2 spec.
121 */
122
123 /* Packet formats are described in Documentation/input/alps.txt */
124
125 static bool alps_is_valid_first_byte(struct alps_data *priv,
126 unsigned char data)
127 {
128 return (data & priv->mask0) == priv->byte0;
129 }
130
131 static void alps_report_buttons(struct psmouse *psmouse,
132 struct input_dev *dev1, struct input_dev *dev2,
133 int left, int right, int middle)
134 {
135 struct input_dev *dev;
136
137 /*
138 * If shared button has already been reported on the
139 * other device (dev2) then this event should be also
140 * sent through that device.
141 */
142 dev = test_bit(BTN_LEFT, dev2->key) ? dev2 : dev1;
143 input_report_key(dev, BTN_LEFT, left);
144
145 dev = test_bit(BTN_RIGHT, dev2->key) ? dev2 : dev1;
146 input_report_key(dev, BTN_RIGHT, right);
147
148 dev = test_bit(BTN_MIDDLE, dev2->key) ? dev2 : dev1;
149 input_report_key(dev, BTN_MIDDLE, middle);
150
151 /*
152 * Sync the _other_ device now, we'll do the first
153 * device later once we report the rest of the events.
154 */
155 input_sync(dev2);
156 }
157
158 static void alps_process_packet_v1_v2(struct psmouse *psmouse)
159 {
160 struct alps_data *priv = psmouse->private;
161 unsigned char *packet = psmouse->packet;
162 struct input_dev *dev = psmouse->dev;
163 struct input_dev *dev2 = priv->dev2;
164 int x, y, z, ges, fin, left, right, middle;
165 int back = 0, forward = 0;
166
167 if (priv->proto_version == ALPS_PROTO_V1) {
168 left = packet[2] & 0x10;
169 right = packet[2] & 0x08;
170 middle = 0;
171 x = packet[1] | ((packet[0] & 0x07) << 7);
172 y = packet[4] | ((packet[3] & 0x07) << 7);
173 z = packet[5];
174 } else {
175 left = packet[3] & 1;
176 right = packet[3] & 2;
177 middle = packet[3] & 4;
178 x = packet[1] | ((packet[2] & 0x78) << (7 - 3));
179 y = packet[4] | ((packet[3] & 0x70) << (7 - 4));
180 z = packet[5];
181 }
182
183 if (priv->flags & ALPS_FW_BK_1) {
184 back = packet[0] & 0x10;
185 forward = packet[2] & 4;
186 }
187
188 if (priv->flags & ALPS_FW_BK_2) {
189 back = packet[3] & 4;
190 forward = packet[2] & 4;
191 if ((middle = forward && back))
192 forward = back = 0;
193 }
194
195 ges = packet[2] & 1;
196 fin = packet[2] & 2;
197
198 if ((priv->flags & ALPS_DUALPOINT) && z == 127) {
199 input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x));
200 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y));
201
202 alps_report_buttons(psmouse, dev2, dev, left, right, middle);
203
204 input_sync(dev2);
205 return;
206 }
207
208 alps_report_buttons(psmouse, dev, dev2, left, right, middle);
209
210 /* Convert hardware tap to a reasonable Z value */
211 if (ges && !fin)
212 z = 40;
213
214 /*
215 * A "tap and drag" operation is reported by the hardware as a transition
216 * from (!fin && ges) to (fin && ges). This should be translated to the
217 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually.
218 */
219 if (ges && fin && !priv->prev_fin) {
220 input_report_abs(dev, ABS_X, x);
221 input_report_abs(dev, ABS_Y, y);
222 input_report_abs(dev, ABS_PRESSURE, 0);
223 input_report_key(dev, BTN_TOOL_FINGER, 0);
224 input_sync(dev);
225 }
226 priv->prev_fin = fin;
227
228 if (z > 30)
229 input_report_key(dev, BTN_TOUCH, 1);
230 if (z < 25)
231 input_report_key(dev, BTN_TOUCH, 0);
232
233 if (z > 0) {
234 input_report_abs(dev, ABS_X, x);
235 input_report_abs(dev, ABS_Y, y);
236 }
237
238 input_report_abs(dev, ABS_PRESSURE, z);
239 input_report_key(dev, BTN_TOOL_FINGER, z > 0);
240
241 if (priv->flags & ALPS_WHEEL)
242 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07));
243
244 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
245 input_report_key(dev, BTN_FORWARD, forward);
246 input_report_key(dev, BTN_BACK, back);
247 }
248
249 if (priv->flags & ALPS_FOUR_BUTTONS) {
250 input_report_key(dev, BTN_0, packet[2] & 4);
251 input_report_key(dev, BTN_1, packet[0] & 0x10);
252 input_report_key(dev, BTN_2, packet[3] & 4);
253 input_report_key(dev, BTN_3, packet[0] & 0x20);
254 }
255
256 input_sync(dev);
257 }
258
259 /*
260 * Process bitmap data from v3 and v4 protocols. Returns the number of
261 * fingers detected. A return value of 0 means at least one of the
262 * bitmaps was empty.
263 *
264 * The bitmaps don't have enough data to track fingers, so this function
265 * only generates points representing a bounding box of all contacts.
266 * These points are returned in x1, y1, x2, and y2 when the return value
267 * is greater than 0.
268 */
269 static int alps_process_bitmap(struct alps_data *priv,
270 unsigned int x_map, unsigned int y_map,
271 int *x1, int *y1, int *x2, int *y2)
272 {
273 struct alps_bitmap_point {
274 int start_bit;
275 int num_bits;
276 };
277
278 int fingers_x = 0, fingers_y = 0, fingers;
279 int i, bit, prev_bit;
280 struct alps_bitmap_point x_low = {0,}, x_high = {0,};
281 struct alps_bitmap_point y_low = {0,}, y_high = {0,};
282 struct alps_bitmap_point *point;
283
284 if (!x_map || !y_map)
285 return 0;
286
287 *x1 = *y1 = *x2 = *y2 = 0;
288
289 prev_bit = 0;
290 point = &x_low;
291 for (i = 0; x_map != 0; i++, x_map >>= 1) {
292 bit = x_map & 1;
293 if (bit) {
294 if (!prev_bit) {
295 point->start_bit = i;
296 fingers_x++;
297 }
298 point->num_bits++;
299 } else {
300 if (prev_bit)
301 point = &x_high;
302 else
303 point->num_bits = 0;
304 }
305 prev_bit = bit;
306 }
307
308 /*
309 * y bitmap is reversed for what we need (lower positions are in
310 * higher bits), so we process from the top end.
311 */
312 y_map = y_map << (sizeof(y_map) * BITS_PER_BYTE - priv->y_bits);
313 prev_bit = 0;
314 point = &y_low;
315 for (i = 0; y_map != 0; i++, y_map <<= 1) {
316 bit = y_map & (1 << (sizeof(y_map) * BITS_PER_BYTE - 1));
317 if (bit) {
318 if (!prev_bit) {
319 point->start_bit = i;
320 fingers_y++;
321 }
322 point->num_bits++;
323 } else {
324 if (prev_bit)
325 point = &y_high;
326 else
327 point->num_bits = 0;
328 }
329 prev_bit = bit;
330 }
331
332 /*
333 * Fingers can overlap, so we use the maximum count of fingers
334 * on either axis as the finger count.
335 */
336 fingers = max(fingers_x, fingers_y);
337
338 /*
339 * If total fingers is > 1 but either axis reports only a single
340 * contact, we have overlapping or adjacent fingers. For the
341 * purposes of creating a bounding box, divide the single contact
342 * (roughly) equally between the two points.
343 */
344 if (fingers > 1) {
345 if (fingers_x == 1) {
346 i = x_low.num_bits / 2;
347 x_low.num_bits = x_low.num_bits - i;
348 x_high.start_bit = x_low.start_bit + i;
349 x_high.num_bits = max(i, 1);
350 } else if (fingers_y == 1) {
351 i = y_low.num_bits / 2;
352 y_low.num_bits = y_low.num_bits - i;
353 y_high.start_bit = y_low.start_bit + i;
354 y_high.num_bits = max(i, 1);
355 }
356 }
357
358 *x1 = (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) /
359 (2 * (priv->x_bits - 1));
360 *y1 = (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) /
361 (2 * (priv->y_bits - 1));
362
363 if (fingers > 1) {
364 *x2 = (priv->x_max *
365 (2 * x_high.start_bit + x_high.num_bits - 1)) /
366 (2 * (priv->x_bits - 1));
367 *y2 = (priv->y_max *
368 (2 * y_high.start_bit + y_high.num_bits - 1)) /
369 (2 * (priv->y_bits - 1));
370 }
371
372 return fingers;
373 }
374
375 static void alps_set_slot(struct input_dev *dev, int slot, bool active,
376 int x, int y)
377 {
378 input_mt_slot(dev, slot);
379 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
380 if (active) {
381 input_report_abs(dev, ABS_MT_POSITION_X, x);
382 input_report_abs(dev, ABS_MT_POSITION_Y, y);
383 }
384 }
385
386 static void alps_report_semi_mt_data(struct input_dev *dev, int num_fingers,
387 int x1, int y1, int x2, int y2)
388 {
389 alps_set_slot(dev, 0, num_fingers != 0, x1, y1);
390 alps_set_slot(dev, 1, num_fingers == 2, x2, y2);
391 }
392
393 static void alps_process_trackstick_packet_v3(struct psmouse *psmouse)
394 {
395 struct alps_data *priv = psmouse->private;
396 unsigned char *packet = psmouse->packet;
397 struct input_dev *dev = priv->dev2;
398 int x, y, z, left, right, middle;
399
400 /* Sanity check packet */
401 if (!(packet[0] & 0x40)) {
402 psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n");
403 return;
404 }
405
406 /*
407 * There's a special packet that seems to indicate the end
408 * of a stream of trackstick data. Filter these out.
409 */
410 if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f)
411 return;
412
413 x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f));
414 y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f));
415 z = (packet[4] & 0x7c) >> 2;
416
417 /*
418 * The x and y values tend to be quite large, and when used
419 * alone the trackstick is difficult to use. Scale them down
420 * to compensate.
421 */
422 x /= 8;
423 y /= 8;
424
425 input_report_rel(dev, REL_X, x);
426 input_report_rel(dev, REL_Y, -y);
427
428 /*
429 * Most ALPS models report the trackstick buttons in the touchpad
430 * packets, but a few report them here. No reliable way has been
431 * found to differentiate between the models upfront, so we enable
432 * the quirk in response to seeing a button press in the trackstick
433 * packet.
434 */
435 left = packet[3] & 0x01;
436 right = packet[3] & 0x02;
437 middle = packet[3] & 0x04;
438
439 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) &&
440 (left || right || middle))
441 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS;
442
443 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) {
444 input_report_key(dev, BTN_LEFT, left);
445 input_report_key(dev, BTN_RIGHT, right);
446 input_report_key(dev, BTN_MIDDLE, middle);
447 }
448
449 input_sync(dev);
450 return;
451 }
452
453 static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p)
454 {
455 f->left = !!(p[3] & 0x01);
456 f->right = !!(p[3] & 0x02);
457 f->middle = !!(p[3] & 0x04);
458
459 f->ts_left = !!(p[3] & 0x10);
460 f->ts_right = !!(p[3] & 0x20);
461 f->ts_middle = !!(p[3] & 0x40);
462 }
463
464 static void alps_decode_pinnacle(struct alps_fields *f, unsigned char *p)
465 {
466 f->first_mp = !!(p[4] & 0x40);
467 f->is_mp = !!(p[0] & 0x40);
468
469 f->fingers = (p[5] & 0x3) + 1;
470 f->x_map = ((p[4] & 0x7e) << 8) |
471 ((p[1] & 0x7f) << 2) |
472 ((p[0] & 0x30) >> 4);
473 f->y_map = ((p[3] & 0x70) << 4) |
474 ((p[2] & 0x7f) << 1) |
475 (p[4] & 0x01);
476
477 f->x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) |
478 ((p[0] & 0x30) >> 4);
479 f->y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f);
480 f->z = p[5] & 0x7f;
481
482 alps_decode_buttons_v3(f, p);
483 }
484
485 static void alps_decode_rushmore(struct alps_fields *f, unsigned char *p)
486 {
487 alps_decode_pinnacle(f, p);
488
489 f->x_map |= (p[5] & 0x10) << 11;
490 f->y_map |= (p[5] & 0x20) << 6;
491 }
492
493 static void alps_decode_dolphin(struct alps_fields *f, unsigned char *p)
494 {
495 f->first_mp = !!(p[0] & 0x02);
496 f->is_mp = !!(p[0] & 0x20);
497
498 f->fingers = ((p[0] & 0x6) >> 1 |
499 (p[0] & 0x10) >> 2);
500 f->x_map = ((p[2] & 0x60) >> 5) |
501 ((p[4] & 0x7f) << 2) |
502 ((p[5] & 0x7f) << 9) |
503 ((p[3] & 0x07) << 16) |
504 ((p[3] & 0x70) << 15) |
505 ((p[0] & 0x01) << 22);
506 f->y_map = (p[1] & 0x7f) |
507 ((p[2] & 0x1f) << 7);
508
509 f->x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7));
510 f->y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3));
511 f->z = (p[0] & 4) ? 0 : p[5] & 0x7f;
512
513 alps_decode_buttons_v3(f, p);
514 }
515
516 static void alps_process_touchpad_packet_v3(struct psmouse *psmouse)
517 {
518 struct alps_data *priv = psmouse->private;
519 unsigned char *packet = psmouse->packet;
520 struct input_dev *dev = psmouse->dev;
521 struct input_dev *dev2 = priv->dev2;
522 int x1 = 0, y1 = 0, x2 = 0, y2 = 0;
523 int fingers = 0, bmap_fingers;
524 struct alps_fields f;
525
526 priv->decode_fields(&f, packet);
527
528 /*
529 * There's no single feature of touchpad position and bitmap packets
530 * that can be used to distinguish between them. We rely on the fact
531 * that a bitmap packet should always follow a position packet with
532 * bit 6 of packet[4] set.
533 */
534 if (priv->multi_packet) {
535 /*
536 * Sometimes a position packet will indicate a multi-packet
537 * sequence, but then what follows is another position
538 * packet. Check for this, and when it happens process the
539 * position packet as usual.
540 */
541 if (f.is_mp) {
542 fingers = f.fingers;
543 bmap_fingers = alps_process_bitmap(priv,
544 f.x_map, f.y_map,
545 &x1, &y1, &x2, &y2);
546
547 /*
548 * We shouldn't report more than one finger if
549 * we don't have two coordinates.
550 */
551 if (fingers > 1 && bmap_fingers < 2)
552 fingers = bmap_fingers;
553
554 /* Now process position packet */
555 priv->decode_fields(&f, priv->multi_data);
556 } else {
557 priv->multi_packet = 0;
558 }
559 }
560
561 /*
562 * Bit 6 of byte 0 is not usually set in position packets. The only
563 * times it seems to be set is in situations where the data is
564 * suspect anyway, e.g. a palm resting flat on the touchpad. Given
565 * this combined with the fact that this bit is useful for filtering
566 * out misidentified bitmap packets, we reject anything with this
567 * bit set.
568 */
569 if (f.is_mp)
570 return;
571
572 if (!priv->multi_packet && f.first_mp) {
573 priv->multi_packet = 1;
574 memcpy(priv->multi_data, packet, sizeof(priv->multi_data));
575 return;
576 }
577
578 priv->multi_packet = 0;
579
580 /*
581 * Sometimes the hardware sends a single packet with z = 0
582 * in the middle of a stream. Real releases generate packets
583 * with x, y, and z all zero, so these seem to be flukes.
584 * Ignore them.
585 */
586 if (f.x && f.y && !f.z)
587 return;
588
589 /*
590 * If we don't have MT data or the bitmaps were empty, we have
591 * to rely on ST data.
592 */
593 if (!fingers) {
594 x1 = f.x;
595 y1 = f.y;
596 fingers = f.z > 0 ? 1 : 0;
597 }
598
599 if (f.z >= 64)
600 input_report_key(dev, BTN_TOUCH, 1);
601 else
602 input_report_key(dev, BTN_TOUCH, 0);
603
604 alps_report_semi_mt_data(dev, fingers, x1, y1, x2, y2);
605
606 input_mt_report_finger_count(dev, fingers);
607
608 input_report_key(dev, BTN_LEFT, f.left);
609 input_report_key(dev, BTN_RIGHT, f.right);
610 input_report_key(dev, BTN_MIDDLE, f.middle);
611
612 if (f.z > 0) {
613 input_report_abs(dev, ABS_X, f.x);
614 input_report_abs(dev, ABS_Y, f.y);
615 }
616 input_report_abs(dev, ABS_PRESSURE, f.z);
617
618 input_sync(dev);
619
620 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) {
621 input_report_key(dev2, BTN_LEFT, f.ts_left);
622 input_report_key(dev2, BTN_RIGHT, f.ts_right);
623 input_report_key(dev2, BTN_MIDDLE, f.ts_middle);
624 input_sync(dev2);
625 }
626 }
627
628 static void alps_process_packet_v3(struct psmouse *psmouse)
629 {
630 unsigned char *packet = psmouse->packet;
631
632 /*
633 * v3 protocol packets come in three types, two representing
634 * touchpad data and one representing trackstick data.
635 * Trackstick packets seem to be distinguished by always
636 * having 0x3f in the last byte. This value has never been
637 * observed in the last byte of either of the other types
638 * of packets.
639 */
640 if (packet[5] == 0x3f) {
641 alps_process_trackstick_packet_v3(psmouse);
642 return;
643 }
644
645 alps_process_touchpad_packet_v3(psmouse);
646 }
647
648 static void alps_process_packet_v4(struct psmouse *psmouse)
649 {
650 struct alps_data *priv = psmouse->private;
651 unsigned char *packet = psmouse->packet;
652 struct input_dev *dev = psmouse->dev;
653 int offset;
654 int x, y, z;
655 int left, right;
656 int x1, y1, x2, y2;
657 int fingers = 0;
658 unsigned int x_bitmap, y_bitmap;
659
660 /*
661 * v4 has a 6-byte encoding for bitmap data, but this data is
662 * broken up between 3 normal packets. Use priv->multi_packet to
663 * track our position in the bitmap packet.
664 */
665 if (packet[6] & 0x40) {
666 /* sync, reset position */
667 priv->multi_packet = 0;
668 }
669
670 if (WARN_ON_ONCE(priv->multi_packet > 2))
671 return;
672
673 offset = 2 * priv->multi_packet;
674 priv->multi_data[offset] = packet[6];
675 priv->multi_data[offset + 1] = packet[7];
676
677 if (++priv->multi_packet > 2) {
678 priv->multi_packet = 0;
679
680 x_bitmap = ((priv->multi_data[2] & 0x1f) << 10) |
681 ((priv->multi_data[3] & 0x60) << 3) |
682 ((priv->multi_data[0] & 0x3f) << 2) |
683 ((priv->multi_data[1] & 0x60) >> 5);
684 y_bitmap = ((priv->multi_data[5] & 0x01) << 10) |
685 ((priv->multi_data[3] & 0x1f) << 5) |
686 (priv->multi_data[1] & 0x1f);
687
688 fingers = alps_process_bitmap(priv, x_bitmap, y_bitmap,
689 &x1, &y1, &x2, &y2);
690
691 /* Store MT data.*/
692 priv->fingers = fingers;
693 priv->x1 = x1;
694 priv->x2 = x2;
695 priv->y1 = y1;
696 priv->y2 = y2;
697 }
698
699 left = packet[4] & 0x01;
700 right = packet[4] & 0x02;
701
702 x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) |
703 ((packet[0] & 0x30) >> 4);
704 y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f);
705 z = packet[5] & 0x7f;
706
707 /*
708 * If there were no contacts in the bitmap, use ST
709 * points in MT reports.
710 * If there were two contacts or more, report MT data.
711 */
712 if (priv->fingers < 2) {
713 x1 = x;
714 y1 = y;
715 fingers = z > 0 ? 1 : 0;
716 } else {
717 fingers = priv->fingers;
718 x1 = priv->x1;
719 x2 = priv->x2;
720 y1 = priv->y1;
721 y2 = priv->y2;
722 }
723
724 if (z >= 64)
725 input_report_key(dev, BTN_TOUCH, 1);
726 else
727 input_report_key(dev, BTN_TOUCH, 0);
728
729 alps_report_semi_mt_data(dev, fingers, x1, y1, x2, y2);
730
731 input_mt_report_finger_count(dev, fingers);
732
733 input_report_key(dev, BTN_LEFT, left);
734 input_report_key(dev, BTN_RIGHT, right);
735
736 if (z > 0) {
737 input_report_abs(dev, ABS_X, x);
738 input_report_abs(dev, ABS_Y, y);
739 }
740 input_report_abs(dev, ABS_PRESSURE, z);
741
742 input_sync(dev);
743 }
744
745 static void alps_report_bare_ps2_packet(struct psmouse *psmouse,
746 unsigned char packet[],
747 bool report_buttons)
748 {
749 struct alps_data *priv = psmouse->private;
750 struct input_dev *dev2 = priv->dev2;
751
752 if (report_buttons)
753 alps_report_buttons(psmouse, dev2, psmouse->dev,
754 packet[0] & 1, packet[0] & 2, packet[0] & 4);
755
756 input_report_rel(dev2, REL_X,
757 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0);
758 input_report_rel(dev2, REL_Y,
759 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0);
760
761 input_sync(dev2);
762 }
763
764 static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse)
765 {
766 struct alps_data *priv = psmouse->private;
767
768 if (psmouse->pktcnt < 6)
769 return PSMOUSE_GOOD_DATA;
770
771 if (psmouse->pktcnt == 6) {
772 /*
773 * Start a timer to flush the packet if it ends up last
774 * 6-byte packet in the stream. Timer needs to fire
775 * psmouse core times out itself. 20 ms should be enough
776 * to decide if we are getting more data or not.
777 */
778 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20));
779 return PSMOUSE_GOOD_DATA;
780 }
781
782 del_timer(&priv->timer);
783
784 if (psmouse->packet[6] & 0x80) {
785
786 /*
787 * Highest bit is set - that means we either had
788 * complete ALPS packet and this is start of the
789 * next packet or we got garbage.
790 */
791
792 if (((psmouse->packet[3] |
793 psmouse->packet[4] |
794 psmouse->packet[5]) & 0x80) ||
795 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) {
796 psmouse_dbg(psmouse,
797 "refusing packet %4ph (suspected interleaved ps/2)\n",
798 psmouse->packet + 3);
799 return PSMOUSE_BAD_DATA;
800 }
801
802 priv->process_packet(psmouse);
803
804 /* Continue with the next packet */
805 psmouse->packet[0] = psmouse->packet[6];
806 psmouse->pktcnt = 1;
807
808 } else {
809
810 /*
811 * High bit is 0 - that means that we indeed got a PS/2
812 * packet in the middle of ALPS packet.
813 *
814 * There is also possibility that we got 6-byte ALPS
815 * packet followed by 3-byte packet from trackpoint. We
816 * can not distinguish between these 2 scenarios but
817 * because the latter is unlikely to happen in course of
818 * normal operation (user would need to press all
819 * buttons on the pad and start moving trackpoint
820 * without touching the pad surface) we assume former.
821 * Even if we are wrong the wost thing that would happen
822 * the cursor would jump but we should not get protocol
823 * de-synchronization.
824 */
825
826 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3],
827 false);
828
829 /*
830 * Continue with the standard ALPS protocol handling,
831 * but make sure we won't process it as an interleaved
832 * packet again, which may happen if all buttons are
833 * pressed. To avoid this let's reset the 4th bit which
834 * is normally 1.
835 */
836 psmouse->packet[3] = psmouse->packet[6] & 0xf7;
837 psmouse->pktcnt = 4;
838 }
839
840 return PSMOUSE_GOOD_DATA;
841 }
842
843 static void alps_flush_packet(unsigned long data)
844 {
845 struct psmouse *psmouse = (struct psmouse *)data;
846 struct alps_data *priv = psmouse->private;
847
848 serio_pause_rx(psmouse->ps2dev.serio);
849
850 if (psmouse->pktcnt == psmouse->pktsize) {
851
852 /*
853 * We did not any more data in reasonable amount of time.
854 * Validate the last 3 bytes and process as a standard
855 * ALPS packet.
856 */
857 if ((psmouse->packet[3] |
858 psmouse->packet[4] |
859 psmouse->packet[5]) & 0x80) {
860 psmouse_dbg(psmouse,
861 "refusing packet %3ph (suspected interleaved ps/2)\n",
862 psmouse->packet + 3);
863 } else {
864 priv->process_packet(psmouse);
865 }
866 psmouse->pktcnt = 0;
867 }
868
869 serio_continue_rx(psmouse->ps2dev.serio);
870 }
871
872 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
873 {
874 struct alps_data *priv = psmouse->private;
875
876 /*
877 * Check if we are dealing with a bare PS/2 packet, presumably from
878 * a device connected to the external PS/2 port. Because bare PS/2
879 * protocol does not have enough constant bits to self-synchronize
880 * properly we only do this if the device is fully synchronized.
881 */
882 if (!psmouse->out_of_sync_cnt && (psmouse->packet[0] & 0xc8) == 0x08) {
883 if (psmouse->pktcnt == 3) {
884 alps_report_bare_ps2_packet(psmouse, psmouse->packet,
885 true);
886 return PSMOUSE_FULL_PACKET;
887 }
888 return PSMOUSE_GOOD_DATA;
889 }
890
891 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */
892
893 if ((priv->flags & ALPS_PS2_INTERLEAVED) &&
894 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) {
895 return alps_handle_interleaved_ps2(psmouse);
896 }
897
898 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) {
899 psmouse_dbg(psmouse,
900 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n",
901 psmouse->packet[0], priv->mask0, priv->byte0);
902 return PSMOUSE_BAD_DATA;
903 }
904
905 /* Bytes 2 - pktsize should have 0 in the highest bit */
906 if (priv->proto_version != ALPS_PROTO_V5 &&
907 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize &&
908 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) {
909 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
910 psmouse->pktcnt - 1,
911 psmouse->packet[psmouse->pktcnt - 1]);
912
913 if (priv->proto_version == ALPS_PROTO_V3 &&
914 psmouse->pktcnt == psmouse->pktsize) {
915 /*
916 * Some Dell boxes, such as Latitude E6440 or E7440
917 * with closed lid, quite often smash last byte of
918 * otherwise valid packet with 0xff. Given that the
919 * next packet is very likely to be valid let's
920 * report PSMOUSE_FULL_PACKET but not process data,
921 * rather than reporting PSMOUSE_BAD_DATA and
922 * filling the logs.
923 */
924 return PSMOUSE_FULL_PACKET;
925 }
926
927 return PSMOUSE_BAD_DATA;
928 }
929
930 if (psmouse->pktcnt == psmouse->pktsize) {
931 priv->process_packet(psmouse);
932 return PSMOUSE_FULL_PACKET;
933 }
934
935 return PSMOUSE_GOOD_DATA;
936 }
937
938 static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble)
939 {
940 struct ps2dev *ps2dev = &psmouse->ps2dev;
941 struct alps_data *priv = psmouse->private;
942 int command;
943 unsigned char *param;
944 unsigned char dummy[4];
945
946 BUG_ON(nibble > 0xf);
947
948 command = priv->nibble_commands[nibble].command;
949 param = (command & 0x0f00) ?
950 dummy : (unsigned char *)&priv->nibble_commands[nibble].data;
951
952 if (ps2_command(ps2dev, param, command))
953 return -1;
954
955 return 0;
956 }
957
958 static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr)
959 {
960 struct ps2dev *ps2dev = &psmouse->ps2dev;
961 struct alps_data *priv = psmouse->private;
962 int i, nibble;
963
964 if (ps2_command(ps2dev, NULL, priv->addr_command))
965 return -1;
966
967 for (i = 12; i >= 0; i -= 4) {
968 nibble = (addr >> i) & 0xf;
969 if (alps_command_mode_send_nibble(psmouse, nibble))
970 return -1;
971 }
972
973 return 0;
974 }
975
976 static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
977 {
978 struct ps2dev *ps2dev = &psmouse->ps2dev;
979 unsigned char param[4];
980
981 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
982 return -1;
983
984 /*
985 * The address being read is returned in the first two bytes
986 * of the result. Check that this address matches the expected
987 * address.
988 */
989 if (addr != ((param[0] << 8) | param[1]))
990 return -1;
991
992 return param[2];
993 }
994
995 static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
996 {
997 if (alps_command_mode_set_addr(psmouse, addr))
998 return -1;
999 return __alps_command_mode_read_reg(psmouse, addr);
1000 }
1001
1002 static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value)
1003 {
1004 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf))
1005 return -1;
1006 if (alps_command_mode_send_nibble(psmouse, value & 0xf))
1007 return -1;
1008 return 0;
1009 }
1010
1011 static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr,
1012 u8 value)
1013 {
1014 if (alps_command_mode_set_addr(psmouse, addr))
1015 return -1;
1016 return __alps_command_mode_write_reg(psmouse, value);
1017 }
1018
1019 static int alps_rpt_cmd(struct psmouse *psmouse, int init_command,
1020 int repeated_command, unsigned char *param)
1021 {
1022 struct ps2dev *ps2dev = &psmouse->ps2dev;
1023
1024 param[0] = 0;
1025 if (init_command && ps2_command(ps2dev, param, init_command))
1026 return -EIO;
1027
1028 if (ps2_command(ps2dev, NULL, repeated_command) ||
1029 ps2_command(ps2dev, NULL, repeated_command) ||
1030 ps2_command(ps2dev, NULL, repeated_command))
1031 return -EIO;
1032
1033 param[0] = param[1] = param[2] = 0xff;
1034 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1035 return -EIO;
1036
1037 psmouse_dbg(psmouse, "%2.2X report: %3ph\n",
1038 repeated_command, param);
1039 return 0;
1040 }
1041
1042 static int alps_enter_command_mode(struct psmouse *psmouse)
1043 {
1044 unsigned char param[4];
1045
1046 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) {
1047 psmouse_err(psmouse, "failed to enter command mode\n");
1048 return -1;
1049 }
1050
1051 if ((param[0] != 0x88 || (param[1] != 0x07 && param[1] != 0x08)) &&
1052 param[0] != 0x73) {
1053 psmouse_dbg(psmouse,
1054 "unknown response while entering command mode\n");
1055 return -1;
1056 }
1057 return 0;
1058 }
1059
1060 static inline int alps_exit_command_mode(struct psmouse *psmouse)
1061 {
1062 struct ps2dev *ps2dev = &psmouse->ps2dev;
1063 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM))
1064 return -1;
1065 return 0;
1066 }
1067
1068 /*
1069 * For DualPoint devices select the device that should respond to
1070 * subsequent commands. It looks like glidepad is behind stickpointer,
1071 * I'd thought it would be other way around...
1072 */
1073 static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable)
1074 {
1075 struct ps2dev *ps2dev = &psmouse->ps2dev;
1076 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11;
1077
1078 if (ps2_command(ps2dev, NULL, cmd) ||
1079 ps2_command(ps2dev, NULL, cmd) ||
1080 ps2_command(ps2dev, NULL, cmd) ||
1081 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1082 return -1;
1083
1084 /* we may get 3 more bytes, just ignore them */
1085 ps2_drain(ps2dev, 3, 100);
1086
1087 return 0;
1088 }
1089
1090 static int alps_absolute_mode_v1_v2(struct psmouse *psmouse)
1091 {
1092 struct ps2dev *ps2dev = &psmouse->ps2dev;
1093
1094 /* Try ALPS magic knock - 4 disable before enable */
1095 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1096 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1097 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1098 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1099 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE))
1100 return -1;
1101
1102 /*
1103 * Switch mouse to poll (remote) mode so motion data will not
1104 * get in our way
1105 */
1106 return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL);
1107 }
1108
1109 static int alps_get_status(struct psmouse *psmouse, char *param)
1110 {
1111 /* Get status: 0xF5 0xF5 0xF5 0xE9 */
1112 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param))
1113 return -1;
1114
1115 return 0;
1116 }
1117
1118 /*
1119 * Turn touchpad tapping on or off. The sequences are:
1120 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable,
1121 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable.
1122 * My guess that 0xE9 (GetInfo) is here as a sync point.
1123 * For models that also have stickpointer (DualPoints) its tapping
1124 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but
1125 * we don't fiddle with it.
1126 */
1127 static int alps_tap_mode(struct psmouse *psmouse, int enable)
1128 {
1129 struct ps2dev *ps2dev = &psmouse->ps2dev;
1130 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES;
1131 unsigned char tap_arg = enable ? 0x0A : 0x00;
1132 unsigned char param[4];
1133
1134 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) ||
1135 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1136 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1137 ps2_command(ps2dev, &tap_arg, cmd))
1138 return -1;
1139
1140 if (alps_get_status(psmouse, param))
1141 return -1;
1142
1143 return 0;
1144 }
1145
1146 /*
1147 * alps_poll() - poll the touchpad for current motion packet.
1148 * Used in resync.
1149 */
1150 static int alps_poll(struct psmouse *psmouse)
1151 {
1152 struct alps_data *priv = psmouse->private;
1153 unsigned char buf[sizeof(psmouse->packet)];
1154 bool poll_failed;
1155
1156 if (priv->flags & ALPS_PASS)
1157 alps_passthrough_mode_v2(psmouse, true);
1158
1159 poll_failed = ps2_command(&psmouse->ps2dev, buf,
1160 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0;
1161
1162 if (priv->flags & ALPS_PASS)
1163 alps_passthrough_mode_v2(psmouse, false);
1164
1165 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0)
1166 return -1;
1167
1168 if ((psmouse->badbyte & 0xc8) == 0x08) {
1169 /*
1170 * Poll the track stick ...
1171 */
1172 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8)))
1173 return -1;
1174 }
1175
1176 memcpy(psmouse->packet, buf, sizeof(buf));
1177 return 0;
1178 }
1179
1180 static int alps_hw_init_v1_v2(struct psmouse *psmouse)
1181 {
1182 struct alps_data *priv = psmouse->private;
1183
1184 if ((priv->flags & ALPS_PASS) &&
1185 alps_passthrough_mode_v2(psmouse, true)) {
1186 return -1;
1187 }
1188
1189 if (alps_tap_mode(psmouse, true)) {
1190 psmouse_warn(psmouse, "Failed to enable hardware tapping\n");
1191 return -1;
1192 }
1193
1194 if (alps_absolute_mode_v1_v2(psmouse)) {
1195 psmouse_err(psmouse, "Failed to enable absolute mode\n");
1196 return -1;
1197 }
1198
1199 if ((priv->flags & ALPS_PASS) &&
1200 alps_passthrough_mode_v2(psmouse, false)) {
1201 return -1;
1202 }
1203
1204 /* ALPS needs stream mode, otherwise it won't report any data */
1205 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) {
1206 psmouse_err(psmouse, "Failed to enable stream mode\n");
1207 return -1;
1208 }
1209
1210 return 0;
1211 }
1212
1213 /*
1214 * Enable or disable passthrough mode to the trackstick.
1215 */
1216 static int alps_passthrough_mode_v3(struct psmouse *psmouse,
1217 int reg_base, bool enable)
1218 {
1219 int reg_val, ret = -1;
1220
1221 if (alps_enter_command_mode(psmouse))
1222 return -1;
1223
1224 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008);
1225 if (reg_val == -1)
1226 goto error;
1227
1228 if (enable)
1229 reg_val |= 0x01;
1230 else
1231 reg_val &= ~0x01;
1232
1233 ret = __alps_command_mode_write_reg(psmouse, reg_val);
1234
1235 error:
1236 if (alps_exit_command_mode(psmouse))
1237 ret = -1;
1238 return ret;
1239 }
1240
1241 /* Must be in command mode when calling this function */
1242 static int alps_absolute_mode_v3(struct psmouse *psmouse)
1243 {
1244 int reg_val;
1245
1246 reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
1247 if (reg_val == -1)
1248 return -1;
1249
1250 reg_val |= 0x06;
1251 if (__alps_command_mode_write_reg(psmouse, reg_val))
1252 return -1;
1253
1254 return 0;
1255 }
1256
1257 static int alps_probe_trackstick_v3(struct psmouse *psmouse, int reg_base)
1258 {
1259 int ret = -EIO, reg_val;
1260
1261 if (alps_enter_command_mode(psmouse))
1262 goto error;
1263
1264 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08);
1265 if (reg_val == -1)
1266 goto error;
1267
1268 /* bit 7: trackstick is present */
1269 ret = reg_val & 0x80 ? 0 : -ENODEV;
1270
1271 error:
1272 alps_exit_command_mode(psmouse);
1273 return ret;
1274 }
1275
1276 static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base)
1277 {
1278 struct ps2dev *ps2dev = &psmouse->ps2dev;
1279 int ret = 0;
1280 unsigned char param[4];
1281
1282 if (alps_passthrough_mode_v3(psmouse, reg_base, true))
1283 return -EIO;
1284
1285 /*
1286 * E7 report for the trackstick
1287 *
1288 * There have been reports of failures to seem to trace back
1289 * to the above trackstick check failing. When these occur
1290 * this E7 report fails, so when that happens we continue
1291 * with the assumption that there isn't a trackstick after
1292 * all.
1293 */
1294 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) {
1295 psmouse_warn(psmouse, "trackstick E7 report failed\n");
1296 ret = -ENODEV;
1297 } else {
1298 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param);
1299
1300 /*
1301 * Not sure what this does, but it is absolutely
1302 * essential. Without it, the touchpad does not
1303 * work at all and the trackstick just emits normal
1304 * PS/2 packets.
1305 */
1306 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1307 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1308 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1309 alps_command_mode_send_nibble(psmouse, 0x9) ||
1310 alps_command_mode_send_nibble(psmouse, 0x4)) {
1311 psmouse_err(psmouse,
1312 "Error sending magic E6 sequence\n");
1313 ret = -EIO;
1314 goto error;
1315 }
1316
1317 /*
1318 * This ensures the trackstick packets are in the format
1319 * supported by this driver. If bit 1 isn't set the packet
1320 * format is different.
1321 */
1322 if (alps_enter_command_mode(psmouse) ||
1323 alps_command_mode_write_reg(psmouse,
1324 reg_base + 0x08, 0x82) ||
1325 alps_exit_command_mode(psmouse))
1326 ret = -EIO;
1327 }
1328
1329 error:
1330 if (alps_passthrough_mode_v3(psmouse, reg_base, false))
1331 ret = -EIO;
1332
1333 return ret;
1334 }
1335
1336 static int alps_hw_init_v3(struct psmouse *psmouse)
1337 {
1338 struct ps2dev *ps2dev = &psmouse->ps2dev;
1339 int reg_val;
1340 unsigned char param[4];
1341
1342 reg_val = alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE);
1343 if (reg_val == -EIO)
1344 goto error;
1345
1346 if (reg_val == 0 &&
1347 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO)
1348 goto error;
1349
1350 if (alps_enter_command_mode(psmouse) ||
1351 alps_absolute_mode_v3(psmouse)) {
1352 psmouse_err(psmouse, "Failed to enter absolute mode\n");
1353 goto error;
1354 }
1355
1356 reg_val = alps_command_mode_read_reg(psmouse, 0x0006);
1357 if (reg_val == -1)
1358 goto error;
1359 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
1360 goto error;
1361
1362 reg_val = alps_command_mode_read_reg(psmouse, 0x0007);
1363 if (reg_val == -1)
1364 goto error;
1365 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
1366 goto error;
1367
1368 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1)
1369 goto error;
1370 if (__alps_command_mode_write_reg(psmouse, 0x04))
1371 goto error;
1372
1373 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1)
1374 goto error;
1375 if (__alps_command_mode_write_reg(psmouse, 0x03))
1376 goto error;
1377
1378 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1)
1379 goto error;
1380 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03))
1381 goto error;
1382
1383 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1)
1384 goto error;
1385 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04))
1386 goto error;
1387
1388 alps_exit_command_mode(psmouse);
1389
1390 /* Set rate and enable data reporting */
1391 param[0] = 0x64;
1392 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
1393 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
1394 psmouse_err(psmouse, "Failed to enable data reporting\n");
1395 return -1;
1396 }
1397
1398 return 0;
1399
1400 error:
1401 /*
1402 * Leaving the touchpad in command mode will essentially render
1403 * it unusable until the machine reboots, so exit it here just
1404 * to be safe
1405 */
1406 alps_exit_command_mode(psmouse);
1407 return -1;
1408 }
1409
1410 static int alps_hw_init_rushmore_v3(struct psmouse *psmouse)
1411 {
1412 struct alps_data *priv = psmouse->private;
1413 struct ps2dev *ps2dev = &psmouse->ps2dev;
1414 int reg_val, ret = -1;
1415
1416 if (priv->flags & ALPS_DUALPOINT) {
1417 reg_val = alps_setup_trackstick_v3(psmouse,
1418 ALPS_REG_BASE_RUSHMORE);
1419 if (reg_val == -EIO)
1420 goto error;
1421 if (reg_val == -ENODEV)
1422 priv->flags &= ~ALPS_DUALPOINT;
1423 }
1424
1425 if (alps_enter_command_mode(psmouse) ||
1426 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 ||
1427 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00))
1428 goto error;
1429
1430 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6);
1431 if (reg_val == -1)
1432 goto error;
1433 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd))
1434 goto error;
1435
1436 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64))
1437 goto error;
1438
1439 /* enter absolute mode */
1440 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4);
1441 if (reg_val == -1)
1442 goto error;
1443 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02))
1444 goto error;
1445
1446 alps_exit_command_mode(psmouse);
1447 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
1448
1449 error:
1450 alps_exit_command_mode(psmouse);
1451 return ret;
1452 }
1453
1454 /* Must be in command mode when calling this function */
1455 static int alps_absolute_mode_v4(struct psmouse *psmouse)
1456 {
1457 int reg_val;
1458
1459 reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
1460 if (reg_val == -1)
1461 return -1;
1462
1463 reg_val |= 0x02;
1464 if (__alps_command_mode_write_reg(psmouse, reg_val))
1465 return -1;
1466
1467 return 0;
1468 }
1469
1470 static int alps_hw_init_v4(struct psmouse *psmouse)
1471 {
1472 struct ps2dev *ps2dev = &psmouse->ps2dev;
1473 unsigned char param[4];
1474
1475 if (alps_enter_command_mode(psmouse))
1476 goto error;
1477
1478 if (alps_absolute_mode_v4(psmouse)) {
1479 psmouse_err(psmouse, "Failed to enter absolute mode\n");
1480 goto error;
1481 }
1482
1483 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c))
1484 goto error;
1485
1486 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03))
1487 goto error;
1488
1489 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03))
1490 goto error;
1491
1492 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15))
1493 goto error;
1494
1495 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01))
1496 goto error;
1497
1498 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03))
1499 goto error;
1500
1501 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03))
1502 goto error;
1503
1504 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03))
1505 goto error;
1506
1507 alps_exit_command_mode(psmouse);
1508
1509 /*
1510 * This sequence changes the output from a 9-byte to an
1511 * 8-byte format. All the same data seems to be present,
1512 * just in a more compact format.
1513 */
1514 param[0] = 0xc8;
1515 param[1] = 0x64;
1516 param[2] = 0x50;
1517 if (ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
1518 ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE) ||
1519 ps2_command(ps2dev, &param[2], PSMOUSE_CMD_SETRATE) ||
1520 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID))
1521 return -1;
1522
1523 /* Set rate and enable data reporting */
1524 param[0] = 0x64;
1525 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
1526 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
1527 psmouse_err(psmouse, "Failed to enable data reporting\n");
1528 return -1;
1529 }
1530
1531 return 0;
1532
1533 error:
1534 /*
1535 * Leaving the touchpad in command mode will essentially render
1536 * it unusable until the machine reboots, so exit it here just
1537 * to be safe
1538 */
1539 alps_exit_command_mode(psmouse);
1540 return -1;
1541 }
1542
1543 static int alps_hw_init_dolphin_v1(struct psmouse *psmouse)
1544 {
1545 struct ps2dev *ps2dev = &psmouse->ps2dev;
1546 unsigned char param[2];
1547
1548 /* This is dolphin "v1" as empirically defined by florin9doi */
1549 param[0] = 0x64;
1550 param[1] = 0x28;
1551
1552 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
1553 ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
1554 ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE))
1555 return -1;
1556
1557 return 0;
1558 }
1559
1560 static void alps_set_defaults(struct alps_data *priv)
1561 {
1562 priv->byte0 = 0x8f;
1563 priv->mask0 = 0x8f;
1564 priv->flags = ALPS_DUALPOINT;
1565
1566 priv->x_max = 2000;
1567 priv->y_max = 1400;
1568 priv->x_bits = 15;
1569 priv->y_bits = 11;
1570
1571 switch (priv->proto_version) {
1572 case ALPS_PROTO_V1:
1573 case ALPS_PROTO_V2:
1574 priv->hw_init = alps_hw_init_v1_v2;
1575 priv->process_packet = alps_process_packet_v1_v2;
1576 priv->set_abs_params = alps_set_abs_params_st;
1577 break;
1578 case ALPS_PROTO_V3:
1579 priv->hw_init = alps_hw_init_v3;
1580 priv->process_packet = alps_process_packet_v3;
1581 priv->set_abs_params = alps_set_abs_params_mt;
1582 priv->decode_fields = alps_decode_pinnacle;
1583 priv->nibble_commands = alps_v3_nibble_commands;
1584 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
1585 break;
1586 case ALPS_PROTO_V4:
1587 priv->hw_init = alps_hw_init_v4;
1588 priv->process_packet = alps_process_packet_v4;
1589 priv->set_abs_params = alps_set_abs_params_mt;
1590 priv->nibble_commands = alps_v4_nibble_commands;
1591 priv->addr_command = PSMOUSE_CMD_DISABLE;
1592 break;
1593 case ALPS_PROTO_V5:
1594 priv->hw_init = alps_hw_init_dolphin_v1;
1595 priv->process_packet = alps_process_packet_v3;
1596 priv->decode_fields = alps_decode_dolphin;
1597 priv->set_abs_params = alps_set_abs_params_mt;
1598 priv->nibble_commands = alps_v3_nibble_commands;
1599 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
1600 priv->byte0 = 0xc8;
1601 priv->mask0 = 0xc8;
1602 priv->flags = 0;
1603 priv->x_max = 1360;
1604 priv->y_max = 660;
1605 priv->x_bits = 23;
1606 priv->y_bits = 12;
1607 break;
1608 }
1609 }
1610
1611 static int alps_match_table(struct psmouse *psmouse, struct alps_data *priv,
1612 unsigned char *e7, unsigned char *ec)
1613 {
1614 const struct alps_model_info *model;
1615 int i;
1616
1617 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) {
1618 model = &alps_model_data[i];
1619
1620 if (!memcmp(e7, model->signature, sizeof(model->signature)) &&
1621 (!model->command_mode_resp ||
1622 model->command_mode_resp == ec[2])) {
1623
1624 priv->proto_version = model->proto_version;
1625 alps_set_defaults(priv);
1626
1627 priv->flags = model->flags;
1628 priv->byte0 = model->byte0;
1629 priv->mask0 = model->mask0;
1630
1631 return 0;
1632 }
1633 }
1634
1635 return -EINVAL;
1636 }
1637
1638 static int alps_identify(struct psmouse *psmouse, struct alps_data *priv)
1639 {
1640 unsigned char e6[4], e7[4], ec[4];
1641
1642 /*
1643 * First try "E6 report".
1644 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed.
1645 * The bits 0-2 of the first byte will be 1s if some buttons are
1646 * pressed.
1647 */
1648 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
1649 PSMOUSE_CMD_SETSCALE11, e6))
1650 return -EIO;
1651
1652 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100))
1653 return -EINVAL;
1654
1655 /*
1656 * Now get the "E7" and "EC" reports. These will uniquely identify
1657 * most ALPS touchpads.
1658 */
1659 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
1660 PSMOUSE_CMD_SETSCALE21, e7) ||
1661 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
1662 PSMOUSE_CMD_RESET_WRAP, ec) ||
1663 alps_exit_command_mode(psmouse))
1664 return -EIO;
1665
1666 if (alps_match_table(psmouse, priv, e7, ec) == 0) {
1667 return 0;
1668 } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 &&
1669 ec[0] == 0x73 && ec[1] == 0x01) {
1670 priv->proto_version = ALPS_PROTO_V5;
1671 alps_set_defaults(priv);
1672
1673 return 0;
1674 } else if (ec[0] == 0x88 && ec[1] == 0x08) {
1675 priv->proto_version = ALPS_PROTO_V3;
1676 alps_set_defaults(priv);
1677
1678 priv->hw_init = alps_hw_init_rushmore_v3;
1679 priv->decode_fields = alps_decode_rushmore;
1680 priv->x_bits = 16;
1681 priv->y_bits = 12;
1682
1683 /* hack to make addr_command, nibble_command available */
1684 psmouse->private = priv;
1685
1686 if (alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_RUSHMORE))
1687 priv->flags &= ~ALPS_DUALPOINT;
1688
1689 return 0;
1690 } else if (ec[0] == 0x88 && ec[1] == 0x07 &&
1691 ec[2] >= 0x90 && ec[2] <= 0x9d) {
1692 priv->proto_version = ALPS_PROTO_V3;
1693 alps_set_defaults(priv);
1694
1695 return 0;
1696 }
1697
1698 psmouse_info(psmouse,
1699 "Unknown ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec);
1700
1701 return -EINVAL;
1702 }
1703
1704 static int alps_reconnect(struct psmouse *psmouse)
1705 {
1706 struct alps_data *priv = psmouse->private;
1707
1708 psmouse_reset(psmouse);
1709
1710 if (alps_identify(psmouse, priv) < 0)
1711 return -1;
1712
1713 return priv->hw_init(psmouse);
1714 }
1715
1716 static void alps_disconnect(struct psmouse *psmouse)
1717 {
1718 struct alps_data *priv = psmouse->private;
1719
1720 psmouse_reset(psmouse);
1721 del_timer_sync(&priv->timer);
1722 input_unregister_device(priv->dev2);
1723 kfree(priv);
1724 }
1725
1726 static void alps_set_abs_params_st(struct alps_data *priv,
1727 struct input_dev *dev1)
1728 {
1729 input_set_abs_params(dev1, ABS_X, 0, 1023, 0, 0);
1730 input_set_abs_params(dev1, ABS_Y, 0, 767, 0, 0);
1731 }
1732
1733 static void alps_set_abs_params_mt(struct alps_data *priv,
1734 struct input_dev *dev1)
1735 {
1736 set_bit(INPUT_PROP_SEMI_MT, dev1->propbit);
1737 input_mt_init_slots(dev1, 2, 0);
1738 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0);
1739 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0);
1740
1741 set_bit(BTN_TOOL_DOUBLETAP, dev1->keybit);
1742 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit);
1743 set_bit(BTN_TOOL_QUADTAP, dev1->keybit);
1744
1745 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0);
1746 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0);
1747 }
1748
1749 int alps_init(struct psmouse *psmouse)
1750 {
1751 struct alps_data *priv;
1752 struct input_dev *dev1 = psmouse->dev, *dev2;
1753
1754 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL);
1755 dev2 = input_allocate_device();
1756 if (!priv || !dev2)
1757 goto init_fail;
1758
1759 priv->dev2 = dev2;
1760 setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse);
1761
1762 psmouse->private = priv;
1763
1764 psmouse_reset(psmouse);
1765
1766 if (alps_identify(psmouse, priv) < 0)
1767 goto init_fail;
1768
1769 if (priv->hw_init(psmouse))
1770 goto init_fail;
1771
1772 /*
1773 * Undo part of setup done for us by psmouse core since touchpad
1774 * is not a relative device.
1775 */
1776 __clear_bit(EV_REL, dev1->evbit);
1777 __clear_bit(REL_X, dev1->relbit);
1778 __clear_bit(REL_Y, dev1->relbit);
1779
1780 /*
1781 * Now set up our capabilities.
1782 */
1783 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY);
1784 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH);
1785 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER);
1786 dev1->keybit[BIT_WORD(BTN_LEFT)] |=
1787 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
1788
1789 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS);
1790
1791 priv->set_abs_params(priv, dev1);
1792 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
1793
1794 if (priv->flags & ALPS_WHEEL) {
1795 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL);
1796 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL);
1797 }
1798
1799 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
1800 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD);
1801 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK);
1802 }
1803
1804 if (priv->flags & ALPS_FOUR_BUTTONS) {
1805 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0);
1806 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1);
1807 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2);
1808 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3);
1809 } else {
1810 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE);
1811 }
1812
1813 snprintf(priv->phys, sizeof(priv->phys), "%s/input1", psmouse->ps2dev.serio->phys);
1814 dev2->phys = priv->phys;
1815 dev2->name = (priv->flags & ALPS_DUALPOINT) ?
1816 "DualPoint Stick" : "PS/2 Mouse";
1817 dev2->id.bustype = BUS_I8042;
1818 dev2->id.vendor = 0x0002;
1819 dev2->id.product = PSMOUSE_ALPS;
1820 dev2->id.version = 0x0000;
1821 dev2->dev.parent = &psmouse->ps2dev.serio->dev;
1822
1823 dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
1824 dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
1825 dev2->keybit[BIT_WORD(BTN_LEFT)] =
1826 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
1827
1828 if (input_register_device(priv->dev2))
1829 goto init_fail;
1830
1831 psmouse->protocol_handler = alps_process_byte;
1832 psmouse->poll = alps_poll;
1833 psmouse->disconnect = alps_disconnect;
1834 psmouse->reconnect = alps_reconnect;
1835 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6;
1836
1837 /* We are having trouble resyncing ALPS touchpads so disable it for now */
1838 psmouse->resync_time = 0;
1839
1840 /* Allow 2 invalid packets without resetting device */
1841 psmouse->resetafter = psmouse->pktsize * 2;
1842
1843 return 0;
1844
1845 init_fail:
1846 psmouse_reset(psmouse);
1847 input_free_device(dev2);
1848 kfree(priv);
1849 psmouse->private = NULL;
1850 return -1;
1851 }
1852
1853 int alps_detect(struct psmouse *psmouse, bool set_properties)
1854 {
1855 struct alps_data dummy;
1856
1857 if (alps_identify(psmouse, &dummy) < 0)
1858 return -1;
1859
1860 if (set_properties) {
1861 psmouse->vendor = "ALPS";
1862 psmouse->name = dummy.flags & ALPS_DUALPOINT ?
1863 "DualPoint TouchPad" : "GlidePoint";
1864 psmouse->model = dummy.proto_version << 8;
1865 }
1866 return 0;
1867 }
1868
Linux with added FPC-III support