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#include <linux/dmi.h>
24
25#include "psmouse.h"
26#include "alps.h"
27
28/*
29 * Definitions for ALPS version 3 and 4 command mode protocol
30 */
31#define ALPS_CMD_NIBBLE_10 0x01f2
32
33#define ALPS_REG_BASE_RUSHMORE 0xc2c0
34#define ALPS_REG_BASE_V7 0xc2c0
35#define ALPS_REG_BASE_PINNACLE 0x0000
36
37static const struct alps_nibble_commands alps_v3_nibble_commands[] = {
38 { PSMOUSE_CMD_SETPOLL, 0x00 }, /* 0 */
39 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */
40 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */
41 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */
42 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */
43 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */
44 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */
45 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */
46 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */
47 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */
48 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */
49 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */
50 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */
51 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */
52 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */
53 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */
54};
55
56static const struct alps_nibble_commands alps_v4_nibble_commands[] = {
57 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */
58 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */
59 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */
60 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */
61 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */
62 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */
63 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */
64 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */
65 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */
66 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */
67 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */
68 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */
69 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */
70 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */
71 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */
72 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */
73};
74
75static const struct alps_nibble_commands alps_v6_nibble_commands[] = {
76 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */
77 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 1 */
78 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 2 */
79 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 3 */
80 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 4 */
81 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 5 */
82 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 6 */
83 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 7 */
84 { PSMOUSE_CMD_GETID, 0x00 }, /* 8 */
85 { PSMOUSE_CMD_GETINFO, 0x00 }, /* 9 */
86 { PSMOUSE_CMD_SETRES, 0x00 }, /* a */
87 { PSMOUSE_CMD_SETRES, 0x01 }, /* b */
88 { PSMOUSE_CMD_SETRES, 0x02 }, /* c */
89 { PSMOUSE_CMD_SETRES, 0x03 }, /* d */
90 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* e */
91 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */
92};
93
94
95#define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */
96#define ALPS_PASS 0x04 /* device has a pass-through port */
97
98#define ALPS_WHEEL 0x08 /* hardware wheel present */
99#define ALPS_FW_BK_1 0x10 /* front & back buttons present */
100#define ALPS_FW_BK_2 0x20 /* front & back buttons present */
101#define ALPS_FOUR_BUTTONS 0x40 /* 4 direction button present */
102#define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with
103 6-byte ALPS packet */
104#define ALPS_STICK_BITS 0x100 /* separate stick button bits */
105#define ALPS_BUTTONPAD 0x200 /* device is a clickpad */
106#define ALPS_DUALPOINT_WITH_PRESSURE 0x400 /* device can report trackpoint pressure */
107
108static const struct alps_model_info alps_model_data[] = {
109 /*
110 * XXX This entry is suspicious. First byte has zero lower nibble,
111 * which is what a normal mouse would report. Also, the value 0x0e
112 * isn't valid per PS/2 spec.
113 */
114 { { 0x20, 0x02, 0x0e }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } },
115
116 { { 0x22, 0x02, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } },
117 { { 0x22, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D600 */
118 { { 0x32, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Toshiba Salellite Pro M10 */
119 { { 0x33, 0x02, 0x0a }, { ALPS_PROTO_V1, 0x88, 0xf8, 0 } }, /* UMAX-530T */
120 { { 0x52, 0x01, 0x14 }, { ALPS_PROTO_V2, 0xff, 0xff,
121 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, /* Toshiba Tecra A11-11L */
122 { { 0x53, 0x02, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
123 { { 0x53, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
124 { { 0x60, 0x03, 0xc8 }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, /* HP ze1115 */
125 { { 0x62, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xcf, 0xcf,
126 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, /* Dell Latitude E5500, E6400, E6500, Precision M4400 */
127 { { 0x63, 0x02, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
128 { { 0x63, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
129 { { 0x63, 0x02, 0x28 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Fujitsu Siemens S6010 */
130 { { 0x63, 0x02, 0x3c }, { ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL } }, /* Toshiba Satellite S2400-103 */
131 { { 0x63, 0x02, 0x50 }, { ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 } }, /* NEC Versa L320 */
132 { { 0x63, 0x02, 0x64 }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
133 { { 0x63, 0x03, 0xc8 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D800 */
134 { { 0x73, 0x00, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT } }, /* ThinkPad R61 8918-5QG */
135 { { 0x73, 0x00, 0x14 }, { ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT } }, /* Dell XT2 */
136 { { 0x73, 0x02, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
137 { { 0x73, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Ahtec Laptop */
138 { { 0x73, 0x02, 0x50 }, { ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS } }, /* Dell Vostro 1400 */
139};
140
141static const struct alps_protocol_info alps_v3_protocol_data = {
142 ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT | ALPS_DUALPOINT_WITH_PRESSURE
143};
144
145static const struct alps_protocol_info alps_v3_rushmore_data = {
146 ALPS_PROTO_V3_RUSHMORE, 0x8f, 0x8f, ALPS_DUALPOINT | ALPS_DUALPOINT_WITH_PRESSURE
147};
148
149static const struct alps_protocol_info alps_v4_protocol_data = {
150 ALPS_PROTO_V4, 0x8f, 0x8f, 0
151};
152
153static const struct alps_protocol_info alps_v5_protocol_data = {
154 ALPS_PROTO_V5, 0xc8, 0xd8, 0
155};
156
157static const struct alps_protocol_info alps_v7_protocol_data = {
158 ALPS_PROTO_V7, 0x48, 0x48, ALPS_DUALPOINT | ALPS_DUALPOINT_WITH_PRESSURE
159};
160
161static const struct alps_protocol_info alps_v8_protocol_data = {
162 ALPS_PROTO_V8, 0x18, 0x18, 0
163};
164
165static const struct alps_protocol_info alps_v9_protocol_data = {
166 ALPS_PROTO_V9, 0xc8, 0xc8, 0
167};
168
169/*
170 * Some v2 models report the stick buttons in separate bits
171 */
172static const struct dmi_system_id alps_dmi_has_separate_stick_buttons[] = {
173#if defined(CONFIG_DMI) && defined(CONFIG_X86)
174 {
175 /* Extrapolated from other entries */
176 .matches = {
177 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
178 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D420"),
179 },
180 },
181 {
182 /* Reported-by: Hans de Bruin <jmdebruin@xmsnet.nl> */
183 .matches = {
184 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
185 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D430"),
186 },
187 },
188 {
189 /* Reported-by: Hans de Goede <hdegoede@redhat.com> */
190 .matches = {
191 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
192 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D620"),
193 },
194 },
195 {
196 /* Extrapolated from other entries */
197 .matches = {
198 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
199 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D630"),
200 },
201 },
202#endif
203 { }
204};
205
206static void alps_set_abs_params_st(struct alps_data *priv,
207 struct input_dev *dev1);
208static void alps_set_abs_params_semi_mt(struct alps_data *priv,
209 struct input_dev *dev1);
210static void alps_set_abs_params_v7(struct alps_data *priv,
211 struct input_dev *dev1);
212static void alps_set_abs_params_ss4_v2(struct alps_data *priv,
213 struct input_dev *dev1);
214
215/* Packet formats are described in Documentation/input/devices/alps.rst */
216
217static bool alps_is_valid_first_byte(struct alps_data *priv,
218 unsigned char data)
219{
220 return (data & priv->mask0) == priv->byte0;
221}
222
223static void alps_report_buttons(struct input_dev *dev1, struct input_dev *dev2,
224 int left, int right, int middle)
225{
226 struct input_dev *dev;
227
228 /*
229 * If shared button has already been reported on the
230 * other device (dev2) then this event should be also
231 * sent through that device.
232 */
233 dev = (dev2 && test_bit(BTN_LEFT, dev2->key)) ? dev2 : dev1;
234 input_report_key(dev, BTN_LEFT, left);
235
236 dev = (dev2 && test_bit(BTN_RIGHT, dev2->key)) ? dev2 : dev1;
237 input_report_key(dev, BTN_RIGHT, right);
238
239 dev = (dev2 && test_bit(BTN_MIDDLE, dev2->key)) ? dev2 : dev1;
240 input_report_key(dev, BTN_MIDDLE, middle);
241
242 /*
243 * Sync the _other_ device now, we'll do the first
244 * device later once we report the rest of the events.
245 */
246 if (dev2)
247 input_sync(dev2);
248}
249
250static void alps_process_packet_v1_v2(struct psmouse *psmouse)
251{
252 struct alps_data *priv = psmouse->private;
253 unsigned char *packet = psmouse->packet;
254 struct input_dev *dev = psmouse->dev;
255 struct input_dev *dev2 = priv->dev2;
256 int x, y, z, ges, fin, left, right, middle;
257 int back = 0, forward = 0;
258
259 if (priv->proto_version == ALPS_PROTO_V1) {
260 left = packet[2] & 0x10;
261 right = packet[2] & 0x08;
262 middle = 0;
263 x = packet[1] | ((packet[0] & 0x07) << 7);
264 y = packet[4] | ((packet[3] & 0x07) << 7);
265 z = packet[5];
266 } else {
267 left = packet[3] & 1;
268 right = packet[3] & 2;
269 middle = packet[3] & 4;
270 x = packet[1] | ((packet[2] & 0x78) << (7 - 3));
271 y = packet[4] | ((packet[3] & 0x70) << (7 - 4));
272 z = packet[5];
273 }
274
275 if (priv->flags & ALPS_FW_BK_1) {
276 back = packet[0] & 0x10;
277 forward = packet[2] & 4;
278 }
279
280 if (priv->flags & ALPS_FW_BK_2) {
281 back = packet[3] & 4;
282 forward = packet[2] & 4;
283 if ((middle = forward && back))
284 forward = back = 0;
285 }
286
287 ges = packet[2] & 1;
288 fin = packet[2] & 2;
289
290 if ((priv->flags & ALPS_DUALPOINT) && z == 127) {
291 input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x));
292 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y));
293
294 alps_report_buttons(dev2, dev, left, right, middle);
295
296 input_sync(dev2);
297 return;
298 }
299
300 /* Some models have separate stick button bits */
301 if (priv->flags & ALPS_STICK_BITS) {
302 left |= packet[0] & 1;
303 right |= packet[0] & 2;
304 middle |= packet[0] & 4;
305 }
306
307 alps_report_buttons(dev, dev2, left, right, middle);
308
309 /* Convert hardware tap to a reasonable Z value */
310 if (ges && !fin)
311 z = 40;
312
313 /*
314 * A "tap and drag" operation is reported by the hardware as a transition
315 * from (!fin && ges) to (fin && ges). This should be translated to the
316 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually.
317 */
318 if (ges && fin && !priv->prev_fin) {
319 input_report_abs(dev, ABS_X, x);
320 input_report_abs(dev, ABS_Y, y);
321 input_report_abs(dev, ABS_PRESSURE, 0);
322 input_report_key(dev, BTN_TOOL_FINGER, 0);
323 input_sync(dev);
324 }
325 priv->prev_fin = fin;
326
327 if (z > 30)
328 input_report_key(dev, BTN_TOUCH, 1);
329 if (z < 25)
330 input_report_key(dev, BTN_TOUCH, 0);
331
332 if (z > 0) {
333 input_report_abs(dev, ABS_X, x);
334 input_report_abs(dev, ABS_Y, y);
335 }
336
337 input_report_abs(dev, ABS_PRESSURE, z);
338 input_report_key(dev, BTN_TOOL_FINGER, z > 0);
339
340 if (priv->flags & ALPS_WHEEL)
341 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07));
342
343 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
344 input_report_key(dev, BTN_FORWARD, forward);
345 input_report_key(dev, BTN_BACK, back);
346 }
347
348 if (priv->flags & ALPS_FOUR_BUTTONS) {
349 input_report_key(dev, BTN_0, packet[2] & 4);
350 input_report_key(dev, BTN_1, packet[0] & 0x10);
351 input_report_key(dev, BTN_2, packet[3] & 4);
352 input_report_key(dev, BTN_3, packet[0] & 0x20);
353 }
354
355 input_sync(dev);
356}
357
358static void alps_get_bitmap_points(unsigned int map,
359 struct alps_bitmap_point *low,
360 struct alps_bitmap_point *high,
361 int *fingers)
362{
363 struct alps_bitmap_point *point;
364 int i, bit, prev_bit = 0;
365
366 point = low;
367 for (i = 0; map != 0; i++, map >>= 1) {
368 bit = map & 1;
369 if (bit) {
370 if (!prev_bit) {
371 point->start_bit = i;
372 point->num_bits = 0;
373 (*fingers)++;
374 }
375 point->num_bits++;
376 } else {
377 if (prev_bit)
378 point = high;
379 }
380 prev_bit = bit;
381 }
382}
383
384/*
385 * Process bitmap data from semi-mt protocols. Returns the number of
386 * fingers detected. A return value of 0 means at least one of the
387 * bitmaps was empty.
388 *
389 * The bitmaps don't have enough data to track fingers, so this function
390 * only generates points representing a bounding box of all contacts.
391 * These points are returned in fields->mt when the return value
392 * is greater than 0.
393 */
394static int alps_process_bitmap(struct alps_data *priv,
395 struct alps_fields *fields)
396{
397 int i, fingers_x = 0, fingers_y = 0, fingers, closest;
398 struct alps_bitmap_point x_low = {0,}, x_high = {0,};
399 struct alps_bitmap_point y_low = {0,}, y_high = {0,};
400 struct input_mt_pos corner[4];
401
402 if (!fields->x_map || !fields->y_map)
403 return 0;
404
405 alps_get_bitmap_points(fields->x_map, &x_low, &x_high, &fingers_x);
406 alps_get_bitmap_points(fields->y_map, &y_low, &y_high, &fingers_y);
407
408 /*
409 * Fingers can overlap, so we use the maximum count of fingers
410 * on either axis as the finger count.
411 */
412 fingers = max(fingers_x, fingers_y);
413
414 /*
415 * If an axis reports only a single contact, we have overlapping or
416 * adjacent fingers. Divide the single contact between the two points.
417 */
418 if (fingers_x == 1) {
419 i = (x_low.num_bits - 1) / 2;
420 x_low.num_bits = x_low.num_bits - i;
421 x_high.start_bit = x_low.start_bit + i;
422 x_high.num_bits = max(i, 1);
423 }
424 if (fingers_y == 1) {
425 i = (y_low.num_bits - 1) / 2;
426 y_low.num_bits = y_low.num_bits - i;
427 y_high.start_bit = y_low.start_bit + i;
428 y_high.num_bits = max(i, 1);
429 }
430
431 /* top-left corner */
432 corner[0].x =
433 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) /
434 (2 * (priv->x_bits - 1));
435 corner[0].y =
436 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) /
437 (2 * (priv->y_bits - 1));
438
439 /* top-right corner */
440 corner[1].x =
441 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) /
442 (2 * (priv->x_bits - 1));
443 corner[1].y =
444 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) /
445 (2 * (priv->y_bits - 1));
446
447 /* bottom-right corner */
448 corner[2].x =
449 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) /
450 (2 * (priv->x_bits - 1));
451 corner[2].y =
452 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) /
453 (2 * (priv->y_bits - 1));
454
455 /* bottom-left corner */
456 corner[3].x =
457 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) /
458 (2 * (priv->x_bits - 1));
459 corner[3].y =
460 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) /
461 (2 * (priv->y_bits - 1));
462
463 /* x-bitmap order is reversed on v5 touchpads */
464 if (priv->proto_version == ALPS_PROTO_V5) {
465 for (i = 0; i < 4; i++)
466 corner[i].x = priv->x_max - corner[i].x;
467 }
468
469 /* y-bitmap order is reversed on v3 and v4 touchpads */
470 if (priv->proto_version == ALPS_PROTO_V3 ||
471 priv->proto_version == ALPS_PROTO_V4) {
472 for (i = 0; i < 4; i++)
473 corner[i].y = priv->y_max - corner[i].y;
474 }
475
476 /*
477 * We only select a corner for the second touch once per 2 finger
478 * touch sequence to avoid the chosen corner (and thus the coordinates)
479 * jumping around when the first touch is in the middle.
480 */
481 if (priv->second_touch == -1) {
482 /* Find corner closest to our st coordinates */
483 closest = 0x7fffffff;
484 for (i = 0; i < 4; i++) {
485 int dx = fields->st.x - corner[i].x;
486 int dy = fields->st.y - corner[i].y;
487 int distance = dx * dx + dy * dy;
488
489 if (distance < closest) {
490 priv->second_touch = i;
491 closest = distance;
492 }
493 }
494 /* And select the opposite corner to use for the 2nd touch */
495 priv->second_touch = (priv->second_touch + 2) % 4;
496 }
497
498 fields->mt[0] = fields->st;
499 fields->mt[1] = corner[priv->second_touch];
500
501 return fingers;
502}
503
504static void alps_set_slot(struct input_dev *dev, int slot, int x, int y)
505{
506 input_mt_slot(dev, slot);
507 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
508 input_report_abs(dev, ABS_MT_POSITION_X, x);
509 input_report_abs(dev, ABS_MT_POSITION_Y, y);
510}
511
512static void alps_report_mt_data(struct psmouse *psmouse, int n)
513{
514 struct alps_data *priv = psmouse->private;
515 struct input_dev *dev = psmouse->dev;
516 struct alps_fields *f = &priv->f;
517 int i, slot[MAX_TOUCHES];
518
519 input_mt_assign_slots(dev, slot, f->mt, n, 0);
520 for (i = 0; i < n; i++)
521 alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y);
522
523 input_mt_sync_frame(dev);
524}
525
526static void alps_report_semi_mt_data(struct psmouse *psmouse, int fingers)
527{
528 struct alps_data *priv = psmouse->private;
529 struct input_dev *dev = psmouse->dev;
530 struct alps_fields *f = &priv->f;
531
532 /* Use st data when we don't have mt data */
533 if (fingers < 2) {
534 f->mt[0].x = f->st.x;
535 f->mt[0].y = f->st.y;
536 fingers = f->pressure > 0 ? 1 : 0;
537 priv->second_touch = -1;
538 }
539
540 if (fingers >= 1)
541 alps_set_slot(dev, 0, f->mt[0].x, f->mt[0].y);
542 if (fingers >= 2)
543 alps_set_slot(dev, 1, f->mt[1].x, f->mt[1].y);
544 input_mt_sync_frame(dev);
545
546 input_mt_report_finger_count(dev, fingers);
547
548 input_report_key(dev, BTN_LEFT, f->left);
549 input_report_key(dev, BTN_RIGHT, f->right);
550 input_report_key(dev, BTN_MIDDLE, f->middle);
551
552 input_report_abs(dev, ABS_PRESSURE, f->pressure);
553
554 input_sync(dev);
555}
556
557static void alps_process_trackstick_packet_v3(struct psmouse *psmouse)
558{
559 struct alps_data *priv = psmouse->private;
560 unsigned char *packet = psmouse->packet;
561 struct input_dev *dev = priv->dev2;
562 int x, y, z, left, right, middle;
563
564 /* It should be a DualPoint when received trackstick packet */
565 if (!(priv->flags & ALPS_DUALPOINT)) {
566 psmouse_warn(psmouse,
567 "Rejected trackstick packet from non DualPoint device");
568 return;
569 }
570
571 /* Sanity check packet */
572 if (!(packet[0] & 0x40)) {
573 psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n");
574 return;
575 }
576
577 /*
578 * There's a special packet that seems to indicate the end
579 * of a stream of trackstick data. Filter these out.
580 */
581 if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f)
582 return;
583
584 x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f));
585 y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f));
586 z = packet[4] & 0x7f;
587
588 /*
589 * The x and y values tend to be quite large, and when used
590 * alone the trackstick is difficult to use. Scale them down
591 * to compensate.
592 */
593 x /= 8;
594 y /= 8;
595
596 input_report_rel(dev, REL_X, x);
597 input_report_rel(dev, REL_Y, -y);
598 input_report_abs(dev, ABS_PRESSURE, z);
599
600 /*
601 * Most ALPS models report the trackstick buttons in the touchpad
602 * packets, but a few report them here. No reliable way has been
603 * found to differentiate between the models upfront, so we enable
604 * the quirk in response to seeing a button press in the trackstick
605 * packet.
606 */
607 left = packet[3] & 0x01;
608 right = packet[3] & 0x02;
609 middle = packet[3] & 0x04;
610
611 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) &&
612 (left || right || middle))
613 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS;
614
615 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) {
616 input_report_key(dev, BTN_LEFT, left);
617 input_report_key(dev, BTN_RIGHT, right);
618 input_report_key(dev, BTN_MIDDLE, middle);
619 }
620
621 input_sync(dev);
622 return;
623}
624
625static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p)
626{
627 f->left = !!(p[3] & 0x01);
628 f->right = !!(p[3] & 0x02);
629 f->middle = !!(p[3] & 0x04);
630
631 f->ts_left = !!(p[3] & 0x10);
632 f->ts_right = !!(p[3] & 0x20);
633 f->ts_middle = !!(p[3] & 0x40);
634}
635
636static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p,
637 struct psmouse *psmouse)
638{
639 f->first_mp = !!(p[4] & 0x40);
640 f->is_mp = !!(p[0] & 0x40);
641
642 if (f->is_mp) {
643 f->fingers = (p[5] & 0x3) + 1;
644 f->x_map = ((p[4] & 0x7e) << 8) |
645 ((p[1] & 0x7f) << 2) |
646 ((p[0] & 0x30) >> 4);
647 f->y_map = ((p[3] & 0x70) << 4) |
648 ((p[2] & 0x7f) << 1) |
649 (p[4] & 0x01);
650 } else {
651 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) |
652 ((p[0] & 0x30) >> 4);
653 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f);
654 f->pressure = p[5] & 0x7f;
655
656 alps_decode_buttons_v3(f, p);
657 }
658
659 return 0;
660}
661
662static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p,
663 struct psmouse *psmouse)
664{
665 f->first_mp = !!(p[4] & 0x40);
666 f->is_mp = !!(p[5] & 0x40);
667
668 if (f->is_mp) {
669 f->fingers = max((p[5] & 0x3), ((p[5] >> 2) & 0x3)) + 1;
670 f->x_map = ((p[5] & 0x10) << 11) |
671 ((p[4] & 0x7e) << 8) |
672 ((p[1] & 0x7f) << 2) |
673 ((p[0] & 0x30) >> 4);
674 f->y_map = ((p[5] & 0x20) << 6) |
675 ((p[3] & 0x70) << 4) |
676 ((p[2] & 0x7f) << 1) |
677 (p[4] & 0x01);
678 } else {
679 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) |
680 ((p[0] & 0x30) >> 4);
681 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f);
682 f->pressure = p[5] & 0x7f;
683
684 alps_decode_buttons_v3(f, p);
685 }
686
687 return 0;
688}
689
690static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p,
691 struct psmouse *psmouse)
692{
693 u64 palm_data = 0;
694 struct alps_data *priv = psmouse->private;
695
696 f->first_mp = !!(p[0] & 0x02);
697 f->is_mp = !!(p[0] & 0x20);
698
699 if (!f->is_mp) {
700 f->st.x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7));
701 f->st.y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3));
702 f->pressure = (p[0] & 4) ? 0 : p[5] & 0x7f;
703 alps_decode_buttons_v3(f, p);
704 } else {
705 f->fingers = ((p[0] & 0x6) >> 1 |
706 (p[0] & 0x10) >> 2);
707
708 palm_data = (p[1] & 0x7f) |
709 ((p[2] & 0x7f) << 7) |
710 ((p[4] & 0x7f) << 14) |
711 ((p[5] & 0x7f) << 21) |
712 ((p[3] & 0x07) << 28) |
713 (((u64)p[3] & 0x70) << 27) |
714 (((u64)p[0] & 0x01) << 34);
715
716 /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */
717 f->y_map = palm_data & (BIT(priv->y_bits) - 1);
718
719 /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */
720 f->x_map = (palm_data >> priv->y_bits) &
721 (BIT(priv->x_bits) - 1);
722 }
723
724 return 0;
725}
726
727static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse)
728{
729 struct alps_data *priv = psmouse->private;
730 unsigned char *packet = psmouse->packet;
731 struct input_dev *dev2 = priv->dev2;
732 struct alps_fields *f = &priv->f;
733 int fingers = 0;
734
735 memset(f, 0, sizeof(*f));
736
737 priv->decode_fields(f, packet, psmouse);
738
739 /*
740 * There's no single feature of touchpad position and bitmap packets
741 * that can be used to distinguish between them. We rely on the fact
742 * that a bitmap packet should always follow a position packet with
743 * bit 6 of packet[4] set.
744 */
745 if (priv->multi_packet) {
746 /*
747 * Sometimes a position packet will indicate a multi-packet
748 * sequence, but then what follows is another position
749 * packet. Check for this, and when it happens process the
750 * position packet as usual.
751 */
752 if (f->is_mp) {
753 fingers = f->fingers;
754 /*
755 * Bitmap processing uses position packet's coordinate
756 * data, so we need to do decode it first.
757 */
758 priv->decode_fields(f, priv->multi_data, psmouse);
759 if (alps_process_bitmap(priv, f) == 0)
760 fingers = 0; /* Use st data */
761 } else {
762 priv->multi_packet = 0;
763 }
764 }
765
766 /*
767 * Bit 6 of byte 0 is not usually set in position packets. The only
768 * times it seems to be set is in situations where the data is
769 * suspect anyway, e.g. a palm resting flat on the touchpad. Given
770 * this combined with the fact that this bit is useful for filtering
771 * out misidentified bitmap packets, we reject anything with this
772 * bit set.
773 */
774 if (f->is_mp)
775 return;
776
777 if (!priv->multi_packet && f->first_mp) {
778 priv->multi_packet = 1;
779 memcpy(priv->multi_data, packet, sizeof(priv->multi_data));
780 return;
781 }
782
783 priv->multi_packet = 0;
784
785 /*
786 * Sometimes the hardware sends a single packet with z = 0
787 * in the middle of a stream. Real releases generate packets
788 * with x, y, and z all zero, so these seem to be flukes.
789 * Ignore them.
790 */
791 if (f->st.x && f->st.y && !f->pressure)
792 return;
793
794 alps_report_semi_mt_data(psmouse, fingers);
795
796 if ((priv->flags & ALPS_DUALPOINT) &&
797 !(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) {
798 input_report_key(dev2, BTN_LEFT, f->ts_left);
799 input_report_key(dev2, BTN_RIGHT, f->ts_right);
800 input_report_key(dev2, BTN_MIDDLE, f->ts_middle);
801 input_sync(dev2);
802 }
803}
804
805static void alps_process_packet_v3(struct psmouse *psmouse)
806{
807 unsigned char *packet = psmouse->packet;
808
809 /*
810 * v3 protocol packets come in three types, two representing
811 * touchpad data and one representing trackstick data.
812 * Trackstick packets seem to be distinguished by always
813 * having 0x3f in the last byte. This value has never been
814 * observed in the last byte of either of the other types
815 * of packets.
816 */
817 if (packet[5] == 0x3f) {
818 alps_process_trackstick_packet_v3(psmouse);
819 return;
820 }
821
822 alps_process_touchpad_packet_v3_v5(psmouse);
823}
824
825static void alps_process_packet_v6(struct psmouse *psmouse)
826{
827 struct alps_data *priv = psmouse->private;
828 unsigned char *packet = psmouse->packet;
829 struct input_dev *dev = psmouse->dev;
830 struct input_dev *dev2 = priv->dev2;
831 int x, y, z;
832
833 /*
834 * We can use Byte5 to distinguish if the packet is from Touchpad
835 * or Trackpoint.
836 * Touchpad: 0 - 0x7E
837 * Trackpoint: 0x7F
838 */
839 if (packet[5] == 0x7F) {
840 /* It should be a DualPoint when received Trackpoint packet */
841 if (!(priv->flags & ALPS_DUALPOINT)) {
842 psmouse_warn(psmouse,
843 "Rejected trackstick packet from non DualPoint device");
844 return;
845 }
846
847 /* Trackpoint packet */
848 x = packet[1] | ((packet[3] & 0x20) << 2);
849 y = packet[2] | ((packet[3] & 0x40) << 1);
850 z = packet[4];
851
852 /* To prevent the cursor jump when finger lifted */
853 if (x == 0x7F && y == 0x7F && z == 0x7F)
854 x = y = z = 0;
855
856 /* Divide 4 since trackpoint's speed is too fast */
857 input_report_rel(dev2, REL_X, (char)x / 4);
858 input_report_rel(dev2, REL_Y, -((char)y / 4));
859
860 psmouse_report_standard_buttons(dev2, packet[3]);
861
862 input_sync(dev2);
863 return;
864 }
865
866 /* Touchpad packet */
867 x = packet[1] | ((packet[3] & 0x78) << 4);
868 y = packet[2] | ((packet[4] & 0x78) << 4);
869 z = packet[5];
870
871 if (z > 30)
872 input_report_key(dev, BTN_TOUCH, 1);
873 if (z < 25)
874 input_report_key(dev, BTN_TOUCH, 0);
875
876 if (z > 0) {
877 input_report_abs(dev, ABS_X, x);
878 input_report_abs(dev, ABS_Y, y);
879 }
880
881 input_report_abs(dev, ABS_PRESSURE, z);
882 input_report_key(dev, BTN_TOOL_FINGER, z > 0);
883
884 /* v6 touchpad does not have middle button */
885 packet[3] &= ~BIT(2);
886 psmouse_report_standard_buttons(dev2, packet[3]);
887
888 input_sync(dev);
889}
890
891static void alps_process_packet_v4(struct psmouse *psmouse)
892{
893 struct alps_data *priv = psmouse->private;
894 unsigned char *packet = psmouse->packet;
895 struct alps_fields *f = &priv->f;
896 int offset;
897
898 /*
899 * v4 has a 6-byte encoding for bitmap data, but this data is
900 * broken up between 3 normal packets. Use priv->multi_packet to
901 * track our position in the bitmap packet.
902 */
903 if (packet[6] & 0x40) {
904 /* sync, reset position */
905 priv->multi_packet = 0;
906 }
907
908 if (WARN_ON_ONCE(priv->multi_packet > 2))
909 return;
910
911 offset = 2 * priv->multi_packet;
912 priv->multi_data[offset] = packet[6];
913 priv->multi_data[offset + 1] = packet[7];
914
915 f->left = !!(packet[4] & 0x01);
916 f->right = !!(packet[4] & 0x02);
917
918 f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) |
919 ((packet[0] & 0x30) >> 4);
920 f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f);
921 f->pressure = packet[5] & 0x7f;
922
923 if (++priv->multi_packet > 2) {
924 priv->multi_packet = 0;
925
926 f->x_map = ((priv->multi_data[2] & 0x1f) << 10) |
927 ((priv->multi_data[3] & 0x60) << 3) |
928 ((priv->multi_data[0] & 0x3f) << 2) |
929 ((priv->multi_data[1] & 0x60) >> 5);
930 f->y_map = ((priv->multi_data[5] & 0x01) << 10) |
931 ((priv->multi_data[3] & 0x1f) << 5) |
932 (priv->multi_data[1] & 0x1f);
933
934 f->fingers = alps_process_bitmap(priv, f);
935 }
936
937 alps_report_semi_mt_data(psmouse, f->fingers);
938}
939
940static bool alps_is_valid_package_v7(struct psmouse *psmouse)
941{
942 switch (psmouse->pktcnt) {
943 case 3:
944 return (psmouse->packet[2] & 0x40) == 0x40;
945 case 4:
946 return (psmouse->packet[3] & 0x48) == 0x48;
947 case 6:
948 return (psmouse->packet[5] & 0x40) == 0x00;
949 }
950 return true;
951}
952
953static unsigned char alps_get_packet_id_v7(char *byte)
954{
955 unsigned char packet_id;
956
957 if (byte[4] & 0x40)
958 packet_id = V7_PACKET_ID_TWO;
959 else if (byte[4] & 0x01)
960 packet_id = V7_PACKET_ID_MULTI;
961 else if ((byte[0] & 0x10) && !(byte[4] & 0x43))
962 packet_id = V7_PACKET_ID_NEW;
963 else if (byte[1] == 0x00 && byte[4] == 0x00)
964 packet_id = V7_PACKET_ID_IDLE;
965 else
966 packet_id = V7_PACKET_ID_UNKNOWN;
967
968 return packet_id;
969}
970
971static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt,
972 unsigned char *pkt,
973 unsigned char pkt_id)
974{
975 mt[0].x = ((pkt[2] & 0x80) << 4);
976 mt[0].x |= ((pkt[2] & 0x3F) << 5);
977 mt[0].x |= ((pkt[3] & 0x30) >> 1);
978 mt[0].x |= (pkt[3] & 0x07);
979 mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07);
980
981 mt[1].x = ((pkt[3] & 0x80) << 4);
982 mt[1].x |= ((pkt[4] & 0x80) << 3);
983 mt[1].x |= ((pkt[4] & 0x3F) << 4);
984 mt[1].y = ((pkt[5] & 0x80) << 3);
985 mt[1].y |= ((pkt[5] & 0x3F) << 4);
986
987 switch (pkt_id) {
988 case V7_PACKET_ID_TWO:
989 mt[1].x &= ~0x000F;
990 mt[1].y |= 0x000F;
991 /* Detect false-postive touches where x & y report max value */
992 if (mt[1].y == 0x7ff && mt[1].x == 0xff0) {
993 mt[1].x = 0;
994 /* y gets set to 0 at the end of this function */
995 }
996 break;
997
998 case V7_PACKET_ID_MULTI:
999 mt[1].x &= ~0x003F;
1000 mt[1].y &= ~0x0020;
1001 mt[1].y |= ((pkt[4] & 0x02) << 4);
1002 mt[1].y |= 0x001F;
1003 break;
1004
1005 case V7_PACKET_ID_NEW:
1006 mt[1].x &= ~0x003F;
1007 mt[1].x |= (pkt[0] & 0x20);
1008 mt[1].y |= 0x000F;
1009 break;
1010 }
1011
1012 mt[0].y = 0x7FF - mt[0].y;
1013 mt[1].y = 0x7FF - mt[1].y;
1014}
1015
1016static int alps_get_mt_count(struct input_mt_pos *mt)
1017{
1018 int i, fingers = 0;
1019
1020 for (i = 0; i < MAX_TOUCHES; i++) {
1021 if (mt[i].x != 0 || mt[i].y != 0)
1022 fingers++;
1023 }
1024
1025 return fingers;
1026}
1027
1028static int alps_decode_packet_v7(struct alps_fields *f,
1029 unsigned char *p,
1030 struct psmouse *psmouse)
1031{
1032 struct alps_data *priv = psmouse->private;
1033 unsigned char pkt_id;
1034
1035 pkt_id = alps_get_packet_id_v7(p);
1036 if (pkt_id == V7_PACKET_ID_IDLE)
1037 return 0;
1038 if (pkt_id == V7_PACKET_ID_UNKNOWN)
1039 return -1;
1040 /*
1041 * NEW packets are send to indicate a discontinuity in the finger
1042 * coordinate reporting. Specifically a finger may have moved from
1043 * slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for
1044 * us.
1045 *
1046 * NEW packets have 3 problems:
1047 * 1) They do not contain middle / right button info (on non clickpads)
1048 * this can be worked around by preserving the old button state
1049 * 2) They do not contain an accurate fingercount, and they are
1050 * typically send when the number of fingers changes. We cannot use
1051 * the old finger count as that may mismatch with the amount of
1052 * touch coordinates we've available in the NEW packet
1053 * 3) Their x data for the second touch is inaccurate leading to
1054 * a possible jump of the x coordinate by 16 units when the first
1055 * non NEW packet comes in
1056 * Since problems 2 & 3 cannot be worked around, just ignore them.
1057 */
1058 if (pkt_id == V7_PACKET_ID_NEW)
1059 return 1;
1060
1061 alps_get_finger_coordinate_v7(f->mt, p, pkt_id);
1062
1063 if (pkt_id == V7_PACKET_ID_TWO)
1064 f->fingers = alps_get_mt_count(f->mt);
1065 else /* pkt_id == V7_PACKET_ID_MULTI */
1066 f->fingers = 3 + (p[5] & 0x03);
1067
1068 f->left = (p[0] & 0x80) >> 7;
1069 if (priv->flags & ALPS_BUTTONPAD) {
1070 if (p[0] & 0x20)
1071 f->fingers++;
1072 if (p[0] & 0x10)
1073 f->fingers++;
1074 } else {
1075 f->right = (p[0] & 0x20) >> 5;
1076 f->middle = (p[0] & 0x10) >> 4;
1077 }
1078
1079 /* Sometimes a single touch is reported in mt[1] rather then mt[0] */
1080 if (f->fingers == 1 && f->mt[0].x == 0 && f->mt[0].y == 0) {
1081 f->mt[0].x = f->mt[1].x;
1082 f->mt[0].y = f->mt[1].y;
1083 f->mt[1].x = 0;
1084 f->mt[1].y = 0;
1085 }
1086
1087 return 0;
1088}
1089
1090static void alps_process_trackstick_packet_v7(struct psmouse *psmouse)
1091{
1092 struct alps_data *priv = psmouse->private;
1093 unsigned char *packet = psmouse->packet;
1094 struct input_dev *dev2 = priv->dev2;
1095 int x, y, z;
1096
1097 /* It should be a DualPoint when received trackstick packet */
1098 if (!(priv->flags & ALPS_DUALPOINT)) {
1099 psmouse_warn(psmouse,
1100 "Rejected trackstick packet from non DualPoint device");
1101 return;
1102 }
1103
1104 x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2);
1105 y = (packet[3] & 0x07) | (packet[4] & 0xb8) |
1106 ((packet[3] & 0x20) << 1);
1107 z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1);
1108
1109 input_report_rel(dev2, REL_X, (char)x);
1110 input_report_rel(dev2, REL_Y, -((char)y));
1111 input_report_abs(dev2, ABS_PRESSURE, z);
1112
1113 psmouse_report_standard_buttons(dev2, packet[1]);
1114
1115 input_sync(dev2);
1116}
1117
1118static void alps_process_touchpad_packet_v7(struct psmouse *psmouse)
1119{
1120 struct alps_data *priv = psmouse->private;
1121 struct input_dev *dev = psmouse->dev;
1122 struct alps_fields *f = &priv->f;
1123
1124 memset(f, 0, sizeof(*f));
1125
1126 if (priv->decode_fields(f, psmouse->packet, psmouse))
1127 return;
1128
1129 alps_report_mt_data(psmouse, alps_get_mt_count(f->mt));
1130
1131 input_mt_report_finger_count(dev, f->fingers);
1132
1133 input_report_key(dev, BTN_LEFT, f->left);
1134 input_report_key(dev, BTN_RIGHT, f->right);
1135 input_report_key(dev, BTN_MIDDLE, f->middle);
1136
1137 input_sync(dev);
1138}
1139
1140static void alps_process_packet_v7(struct psmouse *psmouse)
1141{
1142 unsigned char *packet = psmouse->packet;
1143
1144 if (packet[0] == 0x48 && (packet[4] & 0x47) == 0x06)
1145 alps_process_trackstick_packet_v7(psmouse);
1146 else
1147 alps_process_touchpad_packet_v7(psmouse);
1148}
1149
1150static enum SS4_PACKET_ID alps_get_pkt_id_ss4_v2(unsigned char *byte)
1151{
1152 enum SS4_PACKET_ID pkt_id = SS4_PACKET_ID_IDLE;
1153
1154 switch (byte[3] & 0x30) {
1155 case 0x00:
1156 if (SS4_IS_IDLE_V2(byte)) {
1157 pkt_id = SS4_PACKET_ID_IDLE;
1158 } else {
1159 pkt_id = SS4_PACKET_ID_ONE;
1160 }
1161 break;
1162 case 0x10:
1163 /* two-finger finger positions */
1164 pkt_id = SS4_PACKET_ID_TWO;
1165 break;
1166 case 0x20:
1167 /* stick pointer */
1168 pkt_id = SS4_PACKET_ID_STICK;
1169 break;
1170 case 0x30:
1171 /* third and fourth finger positions */
1172 pkt_id = SS4_PACKET_ID_MULTI;
1173 break;
1174 }
1175
1176 return pkt_id;
1177}
1178
1179static int alps_decode_ss4_v2(struct alps_fields *f,
1180 unsigned char *p, struct psmouse *psmouse)
1181{
1182 struct alps_data *priv = psmouse->private;
1183 enum SS4_PACKET_ID pkt_id;
1184 unsigned int no_data_x, no_data_y;
1185
1186 pkt_id = alps_get_pkt_id_ss4_v2(p);
1187
1188 /* Current packet is 1Finger coordinate packet */
1189 switch (pkt_id) {
1190 case SS4_PACKET_ID_ONE:
1191 f->mt[0].x = SS4_1F_X_V2(p);
1192 f->mt[0].y = SS4_1F_Y_V2(p);
1193 f->pressure = ((SS4_1F_Z_V2(p)) * 2) & 0x7f;
1194 /*
1195 * When a button is held the device will give us events
1196 * with x, y, and pressure of 0. This causes annoying jumps
1197 * if a touch is released while the button is held.
1198 * Handle this by claiming zero contacts.
1199 */
1200 f->fingers = f->pressure > 0 ? 1 : 0;
1201 f->first_mp = 0;
1202 f->is_mp = 0;
1203 break;
1204
1205 case SS4_PACKET_ID_TWO:
1206 if (priv->flags & ALPS_BUTTONPAD) {
1207 if (IS_SS4PLUS_DEV(priv->dev_id)) {
1208 f->mt[0].x = SS4_PLUS_BTL_MF_X_V2(p, 0);
1209 f->mt[1].x = SS4_PLUS_BTL_MF_X_V2(p, 1);
1210 } else {
1211 f->mt[0].x = SS4_BTL_MF_X_V2(p, 0);
1212 f->mt[1].x = SS4_BTL_MF_X_V2(p, 1);
1213 }
1214 f->mt[0].y = SS4_BTL_MF_Y_V2(p, 0);
1215 f->mt[1].y = SS4_BTL_MF_Y_V2(p, 1);
1216 } else {
1217 if (IS_SS4PLUS_DEV(priv->dev_id)) {
1218 f->mt[0].x = SS4_PLUS_STD_MF_X_V2(p, 0);
1219 f->mt[1].x = SS4_PLUS_STD_MF_X_V2(p, 1);
1220 } else {
1221 f->mt[0].x = SS4_STD_MF_X_V2(p, 0);
1222 f->mt[1].x = SS4_STD_MF_X_V2(p, 1);
1223 }
1224 f->mt[0].y = SS4_STD_MF_Y_V2(p, 0);
1225 f->mt[1].y = SS4_STD_MF_Y_V2(p, 1);
1226 }
1227 f->pressure = SS4_MF_Z_V2(p, 0) ? 0x30 : 0;
1228
1229 if (SS4_IS_MF_CONTINUE(p)) {
1230 f->first_mp = 1;
1231 } else {
1232 f->fingers = 2;
1233 f->first_mp = 0;
1234 }
1235 f->is_mp = 0;
1236
1237 break;
1238
1239 case SS4_PACKET_ID_MULTI:
1240 if (priv->flags & ALPS_BUTTONPAD) {
1241 if (IS_SS4PLUS_DEV(priv->dev_id)) {
1242 f->mt[2].x = SS4_PLUS_BTL_MF_X_V2(p, 0);
1243 f->mt[3].x = SS4_PLUS_BTL_MF_X_V2(p, 1);
1244 no_data_x = SS4_PLUS_MFPACKET_NO_AX_BL;
1245 } else {
1246 f->mt[2].x = SS4_BTL_MF_X_V2(p, 0);
1247 f->mt[3].x = SS4_BTL_MF_X_V2(p, 1);
1248 no_data_x = SS4_MFPACKET_NO_AX_BL;
1249 }
1250 no_data_y = SS4_MFPACKET_NO_AY_BL;
1251
1252 f->mt[2].y = SS4_BTL_MF_Y_V2(p, 0);
1253 f->mt[3].y = SS4_BTL_MF_Y_V2(p, 1);
1254 } else {
1255 if (IS_SS4PLUS_DEV(priv->dev_id)) {
1256 f->mt[2].x = SS4_PLUS_STD_MF_X_V2(p, 0);
1257 f->mt[3].x = SS4_PLUS_STD_MF_X_V2(p, 1);
1258 no_data_x = SS4_PLUS_MFPACKET_NO_AX;
1259 } else {
1260 f->mt[2].x = SS4_STD_MF_X_V2(p, 0);
1261 f->mt[3].x = SS4_STD_MF_X_V2(p, 1);
1262 no_data_x = SS4_MFPACKET_NO_AX;
1263 }
1264 no_data_y = SS4_MFPACKET_NO_AY;
1265
1266 f->mt[2].y = SS4_STD_MF_Y_V2(p, 0);
1267 f->mt[3].y = SS4_STD_MF_Y_V2(p, 1);
1268 }
1269
1270 f->first_mp = 0;
1271 f->is_mp = 1;
1272
1273 if (SS4_IS_5F_DETECTED(p)) {
1274 f->fingers = 5;
1275 } else if (f->mt[3].x == no_data_x &&
1276 f->mt[3].y == no_data_y) {
1277 f->mt[3].x = 0;
1278 f->mt[3].y = 0;
1279 f->fingers = 3;
1280 } else {
1281 f->fingers = 4;
1282 }
1283 break;
1284
1285 case SS4_PACKET_ID_STICK:
1286 /*
1287 * x, y, and pressure are decoded in
1288 * alps_process_packet_ss4_v2()
1289 */
1290 f->first_mp = 0;
1291 f->is_mp = 0;
1292 break;
1293
1294 case SS4_PACKET_ID_IDLE:
1295 default:
1296 memset(f, 0, sizeof(struct alps_fields));
1297 break;
1298 }
1299
1300 /* handle buttons */
1301 if (pkt_id == SS4_PACKET_ID_STICK) {
1302 f->ts_left = !!(SS4_BTN_V2(p) & 0x01);
1303 f->ts_right = !!(SS4_BTN_V2(p) & 0x02);
1304 f->ts_middle = !!(SS4_BTN_V2(p) & 0x04);
1305 } else {
1306 f->left = !!(SS4_BTN_V2(p) & 0x01);
1307 if (!(priv->flags & ALPS_BUTTONPAD)) {
1308 f->right = !!(SS4_BTN_V2(p) & 0x02);
1309 f->middle = !!(SS4_BTN_V2(p) & 0x04);
1310 }
1311 }
1312
1313 return 0;
1314}
1315
1316static void alps_process_packet_ss4_v2(struct psmouse *psmouse)
1317{
1318 struct alps_data *priv = psmouse->private;
1319 unsigned char *packet = psmouse->packet;
1320 struct input_dev *dev = psmouse->dev;
1321 struct input_dev *dev2 = priv->dev2;
1322 struct alps_fields *f = &priv->f;
1323
1324 memset(f, 0, sizeof(struct alps_fields));
1325 priv->decode_fields(f, packet, psmouse);
1326 if (priv->multi_packet) {
1327 /*
1328 * Sometimes the first packet will indicate a multi-packet
1329 * sequence, but sometimes the next multi-packet would not
1330 * come. Check for this, and when it happens process the
1331 * position packet as usual.
1332 */
1333 if (f->is_mp) {
1334 /* Now process the 1st packet */
1335 priv->decode_fields(f, priv->multi_data, psmouse);
1336 } else {
1337 priv->multi_packet = 0;
1338 }
1339 }
1340
1341 /*
1342 * "f.is_mp" would always be '0' after merging the 1st and 2nd packet.
1343 * When it is set, it means 2nd packet comes without 1st packet come.
1344 */
1345 if (f->is_mp)
1346 return;
1347
1348 /* Save the first packet */
1349 if (!priv->multi_packet && f->first_mp) {
1350 priv->multi_packet = 1;
1351 memcpy(priv->multi_data, packet, sizeof(priv->multi_data));
1352 return;
1353 }
1354
1355 priv->multi_packet = 0;
1356
1357 /* Report trackstick */
1358 if (alps_get_pkt_id_ss4_v2(packet) == SS4_PACKET_ID_STICK) {
1359 if (!(priv->flags & ALPS_DUALPOINT)) {
1360 psmouse_warn(psmouse,
1361 "Rejected trackstick packet from non DualPoint device");
1362 return;
1363 }
1364
1365 input_report_rel(dev2, REL_X, SS4_TS_X_V2(packet));
1366 input_report_rel(dev2, REL_Y, SS4_TS_Y_V2(packet));
1367 input_report_abs(dev2, ABS_PRESSURE, SS4_TS_Z_V2(packet));
1368
1369 input_report_key(dev2, BTN_LEFT, f->ts_left);
1370 input_report_key(dev2, BTN_RIGHT, f->ts_right);
1371 input_report_key(dev2, BTN_MIDDLE, f->ts_middle);
1372
1373 input_sync(dev2);
1374 return;
1375 }
1376
1377 /* Report touchpad */
1378 alps_report_mt_data(psmouse, (f->fingers <= 4) ? f->fingers : 4);
1379
1380 input_mt_report_finger_count(dev, f->fingers);
1381
1382 input_report_key(dev, BTN_LEFT, f->left);
1383 input_report_key(dev, BTN_RIGHT, f->right);
1384 input_report_key(dev, BTN_MIDDLE, f->middle);
1385
1386 input_report_abs(dev, ABS_PRESSURE, f->pressure);
1387 input_sync(dev);
1388}
1389
1390static bool alps_is_valid_package_ss4_v2(struct psmouse *psmouse)
1391{
1392 if (psmouse->pktcnt == 4 && ((psmouse->packet[3] & 0x08) != 0x08))
1393 return false;
1394 if (psmouse->pktcnt == 6 && ((psmouse->packet[5] & 0x10) != 0x0))
1395 return false;
1396 return true;
1397}
1398
1399static DEFINE_MUTEX(alps_mutex);
1400
1401static void alps_register_bare_ps2_mouse(struct work_struct *work)
1402{
1403 struct alps_data *priv =
1404 container_of(work, struct alps_data, dev3_register_work.work);
1405 struct psmouse *psmouse = priv->psmouse;
1406 struct input_dev *dev3;
1407 int error = 0;
1408
1409 mutex_lock(&alps_mutex);
1410
1411 if (priv->dev3)
1412 goto out;
1413
1414 dev3 = input_allocate_device();
1415 if (!dev3) {
1416 psmouse_err(psmouse, "failed to allocate secondary device\n");
1417 error = -ENOMEM;
1418 goto out;
1419 }
1420
1421 snprintf(priv->phys3, sizeof(priv->phys3), "%s/%s",
1422 psmouse->ps2dev.serio->phys,
1423 (priv->dev2 ? "input2" : "input1"));
1424 dev3->phys = priv->phys3;
1425
1426 /*
1427 * format of input device name is: "protocol vendor name"
1428 * see function psmouse_switch_protocol() in psmouse-base.c
1429 */
1430 dev3->name = "PS/2 ALPS Mouse";
1431
1432 dev3->id.bustype = BUS_I8042;
1433 dev3->id.vendor = 0x0002;
1434 dev3->id.product = PSMOUSE_PS2;
1435 dev3->id.version = 0x0000;
1436 dev3->dev.parent = &psmouse->ps2dev.serio->dev;
1437
1438 input_set_capability(dev3, EV_REL, REL_X);
1439 input_set_capability(dev3, EV_REL, REL_Y);
1440 input_set_capability(dev3, EV_KEY, BTN_LEFT);
1441 input_set_capability(dev3, EV_KEY, BTN_RIGHT);
1442 input_set_capability(dev3, EV_KEY, BTN_MIDDLE);
1443
1444 __set_bit(INPUT_PROP_POINTER, dev3->propbit);
1445
1446 error = input_register_device(dev3);
1447 if (error) {
1448 psmouse_err(psmouse,
1449 "failed to register secondary device: %d\n",
1450 error);
1451 input_free_device(dev3);
1452 goto out;
1453 }
1454
1455 priv->dev3 = dev3;
1456
1457out:
1458 /*
1459 * Save the error code so that we can detect that we
1460 * already tried to create the device.
1461 */
1462 if (error)
1463 priv->dev3 = ERR_PTR(error);
1464
1465 mutex_unlock(&alps_mutex);
1466}
1467
1468static void alps_report_bare_ps2_packet(struct psmouse *psmouse,
1469 unsigned char packet[],
1470 bool report_buttons)
1471{
1472 struct alps_data *priv = psmouse->private;
1473 struct input_dev *dev, *dev2 = NULL;
1474
1475 /* Figure out which device to use to report the bare packet */
1476 if (priv->proto_version == ALPS_PROTO_V2 &&
1477 (priv->flags & ALPS_DUALPOINT)) {
1478 /* On V2 devices the DualPoint Stick reports bare packets */
1479 dev = priv->dev2;
1480 dev2 = psmouse->dev;
1481 } else if (unlikely(IS_ERR_OR_NULL(priv->dev3))) {
1482 /* Register dev3 mouse if we received PS/2 packet first time */
1483 if (!IS_ERR(priv->dev3))
1484 psmouse_queue_work(psmouse, &priv->dev3_register_work,
1485 0);
1486 return;
1487 } else {
1488 dev = priv->dev3;
1489 }
1490
1491 if (report_buttons)
1492 alps_report_buttons(dev, dev2,
1493 packet[0] & 1, packet[0] & 2, packet[0] & 4);
1494
1495 psmouse_report_standard_motion(dev, packet);
1496
1497 input_sync(dev);
1498}
1499
1500static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse)
1501{
1502 struct alps_data *priv = psmouse->private;
1503
1504 if (psmouse->pktcnt < 6)
1505 return PSMOUSE_GOOD_DATA;
1506
1507 if (psmouse->pktcnt == 6) {
1508 /*
1509 * Start a timer to flush the packet if it ends up last
1510 * 6-byte packet in the stream. Timer needs to fire
1511 * psmouse core times out itself. 20 ms should be enough
1512 * to decide if we are getting more data or not.
1513 */
1514 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20));
1515 return PSMOUSE_GOOD_DATA;
1516 }
1517
1518 del_timer(&priv->timer);
1519
1520 if (psmouse->packet[6] & 0x80) {
1521
1522 /*
1523 * Highest bit is set - that means we either had
1524 * complete ALPS packet and this is start of the
1525 * next packet or we got garbage.
1526 */
1527
1528 if (((psmouse->packet[3] |
1529 psmouse->packet[4] |
1530 psmouse->packet[5]) & 0x80) ||
1531 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) {
1532 psmouse_dbg(psmouse,
1533 "refusing packet %4ph (suspected interleaved ps/2)\n",
1534 psmouse->packet + 3);
1535 return PSMOUSE_BAD_DATA;
1536 }
1537
1538 priv->process_packet(psmouse);
1539
1540 /* Continue with the next packet */
1541 psmouse->packet[0] = psmouse->packet[6];
1542 psmouse->pktcnt = 1;
1543
1544 } else {
1545
1546 /*
1547 * High bit is 0 - that means that we indeed got a PS/2
1548 * packet in the middle of ALPS packet.
1549 *
1550 * There is also possibility that we got 6-byte ALPS
1551 * packet followed by 3-byte packet from trackpoint. We
1552 * can not distinguish between these 2 scenarios but
1553 * because the latter is unlikely to happen in course of
1554 * normal operation (user would need to press all
1555 * buttons on the pad and start moving trackpoint
1556 * without touching the pad surface) we assume former.
1557 * Even if we are wrong the wost thing that would happen
1558 * the cursor would jump but we should not get protocol
1559 * de-synchronization.
1560 */
1561
1562 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3],
1563 false);
1564
1565 /*
1566 * Continue with the standard ALPS protocol handling,
1567 * but make sure we won't process it as an interleaved
1568 * packet again, which may happen if all buttons are
1569 * pressed. To avoid this let's reset the 4th bit which
1570 * is normally 1.
1571 */
1572 psmouse->packet[3] = psmouse->packet[6] & 0xf7;
1573 psmouse->pktcnt = 4;
1574 }
1575
1576 return PSMOUSE_GOOD_DATA;
1577}
1578
1579static void alps_flush_packet(struct timer_list *t)
1580{
1581 struct alps_data *priv = from_timer(priv, t, timer);
1582 struct psmouse *psmouse = priv->psmouse;
1583
1584 serio_pause_rx(psmouse->ps2dev.serio);
1585
1586 if (psmouse->pktcnt == psmouse->pktsize) {
1587
1588 /*
1589 * We did not any more data in reasonable amount of time.
1590 * Validate the last 3 bytes and process as a standard
1591 * ALPS packet.
1592 */
1593 if ((psmouse->packet[3] |
1594 psmouse->packet[4] |
1595 psmouse->packet[5]) & 0x80) {
1596 psmouse_dbg(psmouse,
1597 "refusing packet %3ph (suspected interleaved ps/2)\n",
1598 psmouse->packet + 3);
1599 } else {
1600 priv->process_packet(psmouse);
1601 }
1602 psmouse->pktcnt = 0;
1603 }
1604
1605 serio_continue_rx(psmouse->ps2dev.serio);
1606}
1607
1608static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
1609{
1610 struct alps_data *priv = psmouse->private;
1611
1612 /*
1613 * Check if we are dealing with a bare PS/2 packet, presumably from
1614 * a device connected to the external PS/2 port. Because bare PS/2
1615 * protocol does not have enough constant bits to self-synchronize
1616 * properly we only do this if the device is fully synchronized.
1617 * Can not distinguish V8's first byte from PS/2 packet's
1618 */
1619 if (priv->proto_version != ALPS_PROTO_V8 &&
1620 !psmouse->out_of_sync_cnt &&
1621 (psmouse->packet[0] & 0xc8) == 0x08) {
1622
1623 if (psmouse->pktcnt == 3) {
1624 alps_report_bare_ps2_packet(psmouse, psmouse->packet,
1625 true);
1626 return PSMOUSE_FULL_PACKET;
1627 }
1628 return PSMOUSE_GOOD_DATA;
1629 }
1630
1631 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */
1632
1633 if ((priv->flags & ALPS_PS2_INTERLEAVED) &&
1634 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) {
1635 return alps_handle_interleaved_ps2(psmouse);
1636 }
1637
1638 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) {
1639 psmouse_dbg(psmouse,
1640 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n",
1641 psmouse->packet[0], priv->mask0, priv->byte0);
1642 return PSMOUSE_BAD_DATA;
1643 }
1644
1645 /* Bytes 2 - pktsize should have 0 in the highest bit */
1646 if (priv->proto_version < ALPS_PROTO_V5 &&
1647 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize &&
1648 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) {
1649 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
1650 psmouse->pktcnt - 1,
1651 psmouse->packet[psmouse->pktcnt - 1]);
1652
1653 if (priv->proto_version == ALPS_PROTO_V3_RUSHMORE &&
1654 psmouse->pktcnt == psmouse->pktsize) {
1655 /*
1656 * Some Dell boxes, such as Latitude E6440 or E7440
1657 * with closed lid, quite often smash last byte of
1658 * otherwise valid packet with 0xff. Given that the
1659 * next packet is very likely to be valid let's
1660 * report PSMOUSE_FULL_PACKET but not process data,
1661 * rather than reporting PSMOUSE_BAD_DATA and
1662 * filling the logs.
1663 */
1664 return PSMOUSE_FULL_PACKET;
1665 }
1666
1667 return PSMOUSE_BAD_DATA;
1668 }
1669
1670 if ((priv->proto_version == ALPS_PROTO_V7 &&
1671 !alps_is_valid_package_v7(psmouse)) ||
1672 (priv->proto_version == ALPS_PROTO_V8 &&
1673 !alps_is_valid_package_ss4_v2(psmouse))) {
1674 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
1675 psmouse->pktcnt - 1,
1676 psmouse->packet[psmouse->pktcnt - 1]);
1677 return PSMOUSE_BAD_DATA;
1678 }
1679
1680 if (psmouse->pktcnt == psmouse->pktsize) {
1681 priv->process_packet(psmouse);
1682 return PSMOUSE_FULL_PACKET;
1683 }
1684
1685 return PSMOUSE_GOOD_DATA;
1686}
1687
1688static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble)
1689{
1690 struct ps2dev *ps2dev = &psmouse->ps2dev;
1691 struct alps_data *priv = psmouse->private;
1692 int command;
1693 unsigned char *param;
1694 unsigned char dummy[4];
1695
1696 BUG_ON(nibble > 0xf);
1697
1698 command = priv->nibble_commands[nibble].command;
1699 param = (command & 0x0f00) ?
1700 dummy : (unsigned char *)&priv->nibble_commands[nibble].data;
1701
1702 if (ps2_command(ps2dev, param, command))
1703 return -1;
1704
1705 return 0;
1706}
1707
1708static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr)
1709{
1710 struct ps2dev *ps2dev = &psmouse->ps2dev;
1711 struct alps_data *priv = psmouse->private;
1712 int i, nibble;
1713
1714 if (ps2_command(ps2dev, NULL, priv->addr_command))
1715 return -1;
1716
1717 for (i = 12; i >= 0; i -= 4) {
1718 nibble = (addr >> i) & 0xf;
1719 if (alps_command_mode_send_nibble(psmouse, nibble))
1720 return -1;
1721 }
1722
1723 return 0;
1724}
1725
1726static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
1727{
1728 struct ps2dev *ps2dev = &psmouse->ps2dev;
1729 unsigned char param[4];
1730
1731 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1732 return -1;
1733
1734 /*
1735 * The address being read is returned in the first two bytes
1736 * of the result. Check that this address matches the expected
1737 * address.
1738 */
1739 if (addr != ((param[0] << 8) | param[1]))
1740 return -1;
1741
1742 return param[2];
1743}
1744
1745static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
1746{
1747 if (alps_command_mode_set_addr(psmouse, addr))
1748 return -1;
1749 return __alps_command_mode_read_reg(psmouse, addr);
1750}
1751
1752static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value)
1753{
1754 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf))
1755 return -1;
1756 if (alps_command_mode_send_nibble(psmouse, value & 0xf))
1757 return -1;
1758 return 0;
1759}
1760
1761static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr,
1762 u8 value)
1763{
1764 if (alps_command_mode_set_addr(psmouse, addr))
1765 return -1;
1766 return __alps_command_mode_write_reg(psmouse, value);
1767}
1768
1769static int alps_rpt_cmd(struct psmouse *psmouse, int init_command,
1770 int repeated_command, unsigned char *param)
1771{
1772 struct ps2dev *ps2dev = &psmouse->ps2dev;
1773
1774 param[0] = 0;
1775 if (init_command && ps2_command(ps2dev, param, init_command))
1776 return -EIO;
1777
1778 if (ps2_command(ps2dev, NULL, repeated_command) ||
1779 ps2_command(ps2dev, NULL, repeated_command) ||
1780 ps2_command(ps2dev, NULL, repeated_command))
1781 return -EIO;
1782
1783 param[0] = param[1] = param[2] = 0xff;
1784 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1785 return -EIO;
1786
1787 psmouse_dbg(psmouse, "%2.2X report: %3ph\n",
1788 repeated_command, param);
1789 return 0;
1790}
1791
1792static bool alps_check_valid_firmware_id(unsigned char id[])
1793{
1794 if (id[0] == 0x73)
1795 return true;
1796
1797 if (id[0] == 0x88 &&
1798 (id[1] == 0x07 ||
1799 id[1] == 0x08 ||
1800 (id[1] & 0xf0) == 0xb0 ||
1801 (id[1] & 0xf0) == 0xc0)) {
1802 return true;
1803 }
1804
1805 return false;
1806}
1807
1808static int alps_enter_command_mode(struct psmouse *psmouse)
1809{
1810 unsigned char param[4];
1811
1812 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) {
1813 psmouse_err(psmouse, "failed to enter command mode\n");
1814 return -1;
1815 }
1816
1817 if (!alps_check_valid_firmware_id(param)) {
1818 psmouse_dbg(psmouse,
1819 "unknown response while entering command mode\n");
1820 return -1;
1821 }
1822 return 0;
1823}
1824
1825static inline int alps_exit_command_mode(struct psmouse *psmouse)
1826{
1827 struct ps2dev *ps2dev = &psmouse->ps2dev;
1828 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM))
1829 return -1;
1830 return 0;
1831}
1832
1833/*
1834 * For DualPoint devices select the device that should respond to
1835 * subsequent commands. It looks like glidepad is behind stickpointer,
1836 * I'd thought it would be other way around...
1837 */
1838static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable)
1839{
1840 struct ps2dev *ps2dev = &psmouse->ps2dev;
1841 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11;
1842
1843 if (ps2_command(ps2dev, NULL, cmd) ||
1844 ps2_command(ps2dev, NULL, cmd) ||
1845 ps2_command(ps2dev, NULL, cmd) ||
1846 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1847 return -1;
1848
1849 /* we may get 3 more bytes, just ignore them */
1850 ps2_drain(ps2dev, 3, 100);
1851
1852 return 0;
1853}
1854
1855static int alps_absolute_mode_v1_v2(struct psmouse *psmouse)
1856{
1857 struct ps2dev *ps2dev = &psmouse->ps2dev;
1858
1859 /* Try ALPS magic knock - 4 disable before enable */
1860 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1861 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1862 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1863 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1864 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE))
1865 return -1;
1866
1867 /*
1868 * Switch mouse to poll (remote) mode so motion data will not
1869 * get in our way
1870 */
1871 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL);
1872}
1873
1874static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word)
1875{
1876 int i, nibble;
1877
1878 /*
1879 * b0-b11 are valid bits, send sequence is inverse.
1880 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1
1881 */
1882 for (i = 0; i <= 8; i += 4) {
1883 nibble = (word >> i) & 0xf;
1884 if (alps_command_mode_send_nibble(psmouse, nibble))
1885 return -1;
1886 }
1887
1888 return 0;
1889}
1890
1891static int alps_monitor_mode_write_reg(struct psmouse *psmouse,
1892 u16 addr, u16 value)
1893{
1894 struct ps2dev *ps2dev = &psmouse->ps2dev;
1895
1896 /* 0x0A0 is the command to write the word */
1897 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) ||
1898 alps_monitor_mode_send_word(psmouse, 0x0A0) ||
1899 alps_monitor_mode_send_word(psmouse, addr) ||
1900 alps_monitor_mode_send_word(psmouse, value) ||
1901 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1902 return -1;
1903
1904 return 0;
1905}
1906
1907static int alps_monitor_mode(struct psmouse *psmouse, bool enable)
1908{
1909 struct ps2dev *ps2dev = &psmouse->ps2dev;
1910
1911 if (enable) {
1912 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */
1913 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
1914 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) ||
1915 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1916 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1917 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
1918 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1919 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
1920 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO))
1921 return -1;
1922 } else {
1923 /* EC to exit monitor mode */
1924 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP))
1925 return -1;
1926 }
1927
1928 return 0;
1929}
1930
1931static int alps_absolute_mode_v6(struct psmouse *psmouse)
1932{
1933 u16 reg_val = 0x181;
1934 int ret = -1;
1935
1936 /* enter monitor mode, to write the register */
1937 if (alps_monitor_mode(psmouse, true))
1938 return -1;
1939
1940 ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val);
1941
1942 if (alps_monitor_mode(psmouse, false))
1943 ret = -1;
1944
1945 return ret;
1946}
1947
1948static int alps_get_status(struct psmouse *psmouse, char *param)
1949{
1950 /* Get status: 0xF5 0xF5 0xF5 0xE9 */
1951 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param))
1952 return -1;
1953
1954 return 0;
1955}
1956
1957/*
1958 * Turn touchpad tapping on or off. The sequences are:
1959 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable,
1960 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable.
1961 * My guess that 0xE9 (GetInfo) is here as a sync point.
1962 * For models that also have stickpointer (DualPoints) its tapping
1963 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but
1964 * we don't fiddle with it.
1965 */
1966static int alps_tap_mode(struct psmouse *psmouse, int enable)
1967{
1968 struct ps2dev *ps2dev = &psmouse->ps2dev;
1969 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES;
1970 unsigned char tap_arg = enable ? 0x0A : 0x00;
1971 unsigned char param[4];
1972
1973 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) ||
1974 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1975 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1976 ps2_command(ps2dev, &tap_arg, cmd))
1977 return -1;
1978
1979 if (alps_get_status(psmouse, param))
1980 return -1;
1981
1982 return 0;
1983}
1984
1985/*
1986 * alps_poll() - poll the touchpad for current motion packet.
1987 * Used in resync.
1988 */
1989static int alps_poll(struct psmouse *psmouse)
1990{
1991 struct alps_data *priv = psmouse->private;
1992 unsigned char buf[sizeof(psmouse->packet)];
1993 bool poll_failed;
1994
1995 if (priv->flags & ALPS_PASS)
1996 alps_passthrough_mode_v2(psmouse, true);
1997
1998 poll_failed = ps2_command(&psmouse->ps2dev, buf,
1999 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0;
2000
2001 if (priv->flags & ALPS_PASS)
2002 alps_passthrough_mode_v2(psmouse, false);
2003
2004 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0)
2005 return -1;
2006
2007 if ((psmouse->badbyte & 0xc8) == 0x08) {
2008/*
2009 * Poll the track stick ...
2010 */
2011 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8)))
2012 return -1;
2013 }
2014
2015 memcpy(psmouse->packet, buf, sizeof(buf));
2016 return 0;
2017}
2018
2019static int alps_hw_init_v1_v2(struct psmouse *psmouse)
2020{
2021 struct alps_data *priv = psmouse->private;
2022
2023 if ((priv->flags & ALPS_PASS) &&
2024 alps_passthrough_mode_v2(psmouse, true)) {
2025 return -1;
2026 }
2027
2028 if (alps_tap_mode(psmouse, true)) {
2029 psmouse_warn(psmouse, "Failed to enable hardware tapping\n");
2030 return -1;
2031 }
2032
2033 if (alps_absolute_mode_v1_v2(psmouse)) {
2034 psmouse_err(psmouse, "Failed to enable absolute mode\n");
2035 return -1;
2036 }
2037
2038 if ((priv->flags & ALPS_PASS) &&
2039 alps_passthrough_mode_v2(psmouse, false)) {
2040 return -1;
2041 }
2042
2043 /* ALPS needs stream mode, otherwise it won't report any data */
2044 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) {
2045 psmouse_err(psmouse, "Failed to enable stream mode\n");
2046 return -1;
2047 }
2048
2049 return 0;
2050}
2051
2052/* Must be in passthrough mode when calling this function */
2053static int alps_trackstick_enter_extended_mode_v3_v6(struct psmouse *psmouse)
2054{
2055 unsigned char param[2] = {0xC8, 0x14};
2056
2057 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
2058 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
2059 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
2060 ps2_command(&psmouse->ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
2061 ps2_command(&psmouse->ps2dev, &param[1], PSMOUSE_CMD_SETRATE))
2062 return -1;
2063
2064 return 0;
2065}
2066
2067static int alps_hw_init_v6(struct psmouse *psmouse)
2068{
2069 int ret;
2070
2071 /* Enter passthrough mode to let trackpoint enter 6byte raw mode */
2072 if (alps_passthrough_mode_v2(psmouse, true))
2073 return -1;
2074
2075 ret = alps_trackstick_enter_extended_mode_v3_v6(psmouse);
2076
2077 if (alps_passthrough_mode_v2(psmouse, false))
2078 return -1;
2079
2080 if (ret)
2081 return ret;
2082
2083 if (alps_absolute_mode_v6(psmouse)) {
2084 psmouse_err(psmouse, "Failed to enable absolute mode\n");
2085 return -1;
2086 }
2087
2088 return 0;
2089}
2090
2091/*
2092 * Enable or disable passthrough mode to the trackstick.
2093 */
2094static int alps_passthrough_mode_v3(struct psmouse *psmouse,
2095 int reg_base, bool enable)
2096{
2097 int reg_val, ret = -1;
2098
2099 if (alps_enter_command_mode(psmouse))
2100 return -1;
2101
2102 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008);
2103 if (reg_val == -1)
2104 goto error;
2105
2106 if (enable)
2107 reg_val |= 0x01;
2108 else
2109 reg_val &= ~0x01;
2110
2111 ret = __alps_command_mode_write_reg(psmouse, reg_val);
2112
2113error:
2114 if (alps_exit_command_mode(psmouse))
2115 ret = -1;
2116 return ret;
2117}
2118
2119/* Must be in command mode when calling this function */
2120static int alps_absolute_mode_v3(struct psmouse *psmouse)
2121{
2122 int reg_val;
2123
2124 reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
2125 if (reg_val == -1)
2126 return -1;
2127
2128 reg_val |= 0x06;
2129 if (__alps_command_mode_write_reg(psmouse, reg_val))
2130 return -1;
2131
2132 return 0;
2133}
2134
2135static int alps_probe_trackstick_v3_v7(struct psmouse *psmouse, int reg_base)
2136{
2137 int ret = -EIO, reg_val;
2138
2139 if (alps_enter_command_mode(psmouse))
2140 goto error;
2141
2142 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08);
2143 if (reg_val == -1)
2144 goto error;
2145
2146 /* bit 7: trackstick is present */
2147 ret = reg_val & 0x80 ? 0 : -ENODEV;
2148
2149error:
2150 alps_exit_command_mode(psmouse);
2151 return ret;
2152}
2153
2154static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base)
2155{
2156 int ret = 0;
2157 int reg_val;
2158 unsigned char param[4];
2159
2160 /*
2161 * We need to configure trackstick to report data for touchpad in
2162 * extended format. And also we need to tell touchpad to expect data
2163 * from trackstick in extended format. Without this configuration
2164 * trackstick packets sent from touchpad are in basic format which is
2165 * different from what we expect.
2166 */
2167
2168 if (alps_passthrough_mode_v3(psmouse, reg_base, true))
2169 return -EIO;
2170
2171 /*
2172 * E7 report for the trackstick
2173 *
2174 * There have been reports of failures to seem to trace back
2175 * to the above trackstick check failing. When these occur
2176 * this E7 report fails, so when that happens we continue
2177 * with the assumption that there isn't a trackstick after
2178 * all.
2179 */
2180 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) {
2181 psmouse_warn(psmouse, "Failed to initialize trackstick (E7 report failed)\n");
2182 ret = -ENODEV;
2183 } else {
2184 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param);
2185 if (alps_trackstick_enter_extended_mode_v3_v6(psmouse)) {
2186 psmouse_err(psmouse, "Failed to enter into trackstick extended mode\n");
2187 ret = -EIO;
2188 }
2189 }
2190
2191 if (alps_passthrough_mode_v3(psmouse, reg_base, false))
2192 return -EIO;
2193
2194 if (ret)
2195 return ret;
2196
2197 if (alps_enter_command_mode(psmouse))
2198 return -EIO;
2199
2200 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08);
2201 if (reg_val == -1) {
2202 ret = -EIO;
2203 } else {
2204 /*
2205 * Tell touchpad that trackstick is now in extended mode.
2206 * If bit 1 isn't set the packet format is different.
2207 */
2208 reg_val |= BIT(1);
2209 if (__alps_command_mode_write_reg(psmouse, reg_val))
2210 ret = -EIO;
2211 }
2212
2213 if (alps_exit_command_mode(psmouse))
2214 return -EIO;
2215
2216 return ret;
2217}
2218
2219static int alps_hw_init_v3(struct psmouse *psmouse)
2220{
2221 struct alps_data *priv = psmouse->private;
2222 struct ps2dev *ps2dev = &psmouse->ps2dev;
2223 int reg_val;
2224 unsigned char param[4];
2225
2226 if ((priv->flags & ALPS_DUALPOINT) &&
2227 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO)
2228 goto error;
2229
2230 if (alps_enter_command_mode(psmouse) ||
2231 alps_absolute_mode_v3(psmouse)) {
2232 psmouse_err(psmouse, "Failed to enter absolute mode\n");
2233 goto error;
2234 }
2235
2236 reg_val = alps_command_mode_read_reg(psmouse, 0x0006);
2237 if (reg_val == -1)
2238 goto error;
2239 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
2240 goto error;
2241
2242 reg_val = alps_command_mode_read_reg(psmouse, 0x0007);
2243 if (reg_val == -1)
2244 goto error;
2245 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
2246 goto error;
2247
2248 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1)
2249 goto error;
2250 if (__alps_command_mode_write_reg(psmouse, 0x04))
2251 goto error;
2252
2253 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1)
2254 goto error;
2255 if (__alps_command_mode_write_reg(psmouse, 0x03))
2256 goto error;
2257
2258 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1)
2259 goto error;
2260 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03))
2261 goto error;
2262
2263 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1)
2264 goto error;
2265 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04))
2266 goto error;
2267
2268 alps_exit_command_mode(psmouse);
2269
2270 /* Set rate and enable data reporting */
2271 param[0] = 0x64;
2272 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
2273 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
2274 psmouse_err(psmouse, "Failed to enable data reporting\n");
2275 return -1;
2276 }
2277
2278 return 0;
2279
2280error:
2281 /*
2282 * Leaving the touchpad in command mode will essentially render
2283 * it unusable until the machine reboots, so exit it here just
2284 * to be safe
2285 */
2286 alps_exit_command_mode(psmouse);
2287 return -1;
2288}
2289
2290static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch)
2291{
2292 int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys;
2293 struct alps_data *priv = psmouse->private;
2294
2295 reg = alps_command_mode_read_reg(psmouse, reg_pitch);
2296 if (reg < 0)
2297 return reg;
2298
2299 x_pitch = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */
2300 x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */
2301
2302 y_pitch = (char)reg >> 4; /* sign extend upper 4 bits */
2303 y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */
2304
2305 reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1);
2306 if (reg < 0)
2307 return reg;
2308
2309 x_electrode = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */
2310 x_electrode = 17 + x_electrode;
2311
2312 y_electrode = (char)reg >> 4; /* sign extend upper 4 bits */
2313 y_electrode = 13 + y_electrode;
2314
2315 x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */
2316 y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */
2317
2318 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */
2319 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */
2320
2321 psmouse_dbg(psmouse,
2322 "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n",
2323 x_pitch, y_pitch, x_electrode, y_electrode,
2324 x_phys / 10, y_phys / 10, priv->x_res, priv->y_res);
2325
2326 return 0;
2327}
2328
2329static int alps_hw_init_rushmore_v3(struct psmouse *psmouse)
2330{
2331 struct alps_data *priv = psmouse->private;
2332 struct ps2dev *ps2dev = &psmouse->ps2dev;
2333 int reg_val, ret = -1;
2334
2335 if (priv->flags & ALPS_DUALPOINT) {
2336 reg_val = alps_setup_trackstick_v3(psmouse,
2337 ALPS_REG_BASE_RUSHMORE);
2338 if (reg_val == -EIO)
2339 goto error;
2340 }
2341
2342 if (alps_enter_command_mode(psmouse) ||
2343 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 ||
2344 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00))
2345 goto error;
2346
2347 if (alps_get_v3_v7_resolution(psmouse, 0xc2da))
2348 goto error;
2349
2350 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6);
2351 if (reg_val == -1)
2352 goto error;
2353 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd))
2354 goto error;
2355
2356 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64))
2357 goto error;
2358
2359 /* enter absolute mode */
2360 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4);
2361 if (reg_val == -1)
2362 goto error;
2363 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02))
2364 goto error;
2365
2366 alps_exit_command_mode(psmouse);
2367 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
2368
2369error:
2370 alps_exit_command_mode(psmouse);
2371 return ret;
2372}
2373
2374/* Must be in command mode when calling this function */
2375static int alps_absolute_mode_v4(struct psmouse *psmouse)
2376{
2377 int reg_val;
2378
2379 reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
2380 if (reg_val == -1)
2381 return -1;
2382
2383 reg_val |= 0x02;
2384 if (__alps_command_mode_write_reg(psmouse, reg_val))
2385 return -1;
2386
2387 return 0;
2388}
2389
2390static int alps_hw_init_v4(struct psmouse *psmouse)
2391{
2392 struct ps2dev *ps2dev = &psmouse->ps2dev;
2393 unsigned char param[4];
2394
2395 if (alps_enter_command_mode(psmouse))
2396 goto error;
2397
2398 if (alps_absolute_mode_v4(psmouse)) {
2399 psmouse_err(psmouse, "Failed to enter absolute mode\n");
2400 goto error;
2401 }
2402
2403 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c))
2404 goto error;
2405
2406 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03))
2407 goto error;
2408
2409 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03))
2410 goto error;
2411
2412 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15))
2413 goto error;
2414
2415 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01))
2416 goto error;
2417
2418 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03))
2419 goto error;
2420
2421 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03))
2422 goto error;
2423
2424 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03))
2425 goto error;
2426
2427 alps_exit_command_mode(psmouse);
2428
2429 /*
2430 * This sequence changes the output from a 9-byte to an
2431 * 8-byte format. All the same data seems to be present,
2432 * just in a more compact format.
2433 */
2434 param[0] = 0xc8;
2435 param[1] = 0x64;
2436 param[2] = 0x50;
2437 if (ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
2438 ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE) ||
2439 ps2_command(ps2dev, &param[2], PSMOUSE_CMD_SETRATE) ||
2440 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID))
2441 return -1;
2442
2443 /* Set rate and enable data reporting */
2444 param[0] = 0x64;
2445 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
2446 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
2447 psmouse_err(psmouse, "Failed to enable data reporting\n");
2448 return -1;
2449 }
2450
2451 return 0;
2452
2453error:
2454 /*
2455 * Leaving the touchpad in command mode will essentially render
2456 * it unusable until the machine reboots, so exit it here just
2457 * to be safe
2458 */
2459 alps_exit_command_mode(psmouse);
2460 return -1;
2461}
2462
2463static int alps_get_otp_values_ss4_v2(struct psmouse *psmouse,
2464 unsigned char index, unsigned char otp[])
2465{
2466 struct ps2dev *ps2dev = &psmouse->ps2dev;
2467
2468 switch (index) {
2469 case 0:
2470 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
2471 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
2472 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO))
2473 return -1;
2474
2475 break;
2476
2477 case 1:
2478 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
2479 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
2480 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO))
2481 return -1;
2482
2483 break;
2484 }
2485
2486 return 0;
2487}
2488
2489static int alps_update_device_area_ss4_v2(unsigned char otp[][4],
2490 struct alps_data *priv)
2491{
2492 int num_x_electrode;
2493 int num_y_electrode;
2494 int x_pitch, y_pitch, x_phys, y_phys;
2495
2496 if (IS_SS4PLUS_DEV(priv->dev_id)) {
2497 num_x_electrode =
2498 SS4PLUS_NUMSENSOR_XOFFSET + (otp[0][2] & 0x0F);
2499 num_y_electrode =
2500 SS4PLUS_NUMSENSOR_YOFFSET + ((otp[0][2] >> 4) & 0x0F);
2501
2502 priv->x_max =
2503 (num_x_electrode - 1) * SS4PLUS_COUNT_PER_ELECTRODE;
2504 priv->y_max =
2505 (num_y_electrode - 1) * SS4PLUS_COUNT_PER_ELECTRODE;
2506
2507 x_pitch = (otp[0][1] & 0x0F) + SS4PLUS_MIN_PITCH_MM;
2508 y_pitch = ((otp[0][1] >> 4) & 0x0F) + SS4PLUS_MIN_PITCH_MM;
2509
2510 } else {
2511 num_x_electrode =
2512 SS4_NUMSENSOR_XOFFSET + (otp[1][0] & 0x0F);
2513 num_y_electrode =
2514 SS4_NUMSENSOR_YOFFSET + ((otp[1][0] >> 4) & 0x0F);
2515
2516 priv->x_max =
2517 (num_x_electrode - 1) * SS4_COUNT_PER_ELECTRODE;
2518 priv->y_max =
2519 (num_y_electrode - 1) * SS4_COUNT_PER_ELECTRODE;
2520
2521 x_pitch = ((otp[1][2] >> 2) & 0x07) + SS4_MIN_PITCH_MM;
2522 y_pitch = ((otp[1][2] >> 5) & 0x07) + SS4_MIN_PITCH_MM;
2523 }
2524
2525 x_phys = x_pitch * (num_x_electrode - 1); /* In 0.1 mm units */
2526 y_phys = y_pitch * (num_y_electrode - 1); /* In 0.1 mm units */
2527
2528 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */
2529 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */
2530
2531 return 0;
2532}
2533
2534static int alps_update_btn_info_ss4_v2(unsigned char otp[][4],
2535 struct alps_data *priv)
2536{
2537 unsigned char is_btnless;
2538
2539 if (IS_SS4PLUS_DEV(priv->dev_id))
2540 is_btnless = (otp[1][0] >> 1) & 0x01;
2541 else
2542 is_btnless = (otp[1][1] >> 3) & 0x01;
2543
2544 if (is_btnless)
2545 priv->flags |= ALPS_BUTTONPAD;
2546
2547 return 0;
2548}
2549
2550static int alps_update_dual_info_ss4_v2(unsigned char otp[][4],
2551 struct alps_data *priv,
2552 struct psmouse *psmouse)
2553{
2554 bool is_dual = false;
2555 int reg_val = 0;
2556 struct ps2dev *ps2dev = &psmouse->ps2dev;
2557
2558 if (IS_SS4PLUS_DEV(priv->dev_id)) {
2559 is_dual = (otp[0][0] >> 4) & 0x01;
2560
2561 if (!is_dual) {
2562 /* For support TrackStick of Thinkpad L/E series */
2563 if (alps_exit_command_mode(psmouse) == 0 &&
2564 alps_enter_command_mode(psmouse) == 0) {
2565 reg_val = alps_command_mode_read_reg(psmouse,
2566 0xD7);
2567 }
2568 alps_exit_command_mode(psmouse);
2569 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
2570
2571 if (reg_val == 0x0C || reg_val == 0x1D)
2572 is_dual = true;
2573 }
2574 }
2575
2576 if (is_dual)
2577 priv->flags |= ALPS_DUALPOINT |
2578 ALPS_DUALPOINT_WITH_PRESSURE;
2579
2580 return 0;
2581}
2582
2583static int alps_set_defaults_ss4_v2(struct psmouse *psmouse,
2584 struct alps_data *priv)
2585{
2586 unsigned char otp[2][4];
2587
2588 memset(otp, 0, sizeof(otp));
2589
2590 if (alps_get_otp_values_ss4_v2(psmouse, 1, &otp[1][0]) ||
2591 alps_get_otp_values_ss4_v2(psmouse, 0, &otp[0][0]))
2592 return -1;
2593
2594 alps_update_device_area_ss4_v2(otp, priv);
2595
2596 alps_update_btn_info_ss4_v2(otp, priv);
2597
2598 alps_update_dual_info_ss4_v2(otp, priv, psmouse);
2599
2600 return 0;
2601}
2602
2603static int alps_dolphin_get_device_area(struct psmouse *psmouse,
2604 struct alps_data *priv)
2605{
2606 struct ps2dev *ps2dev = &psmouse->ps2dev;
2607 unsigned char param[4] = {0};
2608 int num_x_electrode, num_y_electrode;
2609
2610 if (alps_enter_command_mode(psmouse))
2611 return -1;
2612
2613 param[0] = 0x0a;
2614 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
2615 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
2616 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
2617 ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
2618 ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE))
2619 return -1;
2620
2621 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
2622 return -1;
2623
2624 /*
2625 * Dolphin's sensor line number is not fixed. It can be calculated
2626 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET.
2627 * Further more, we can get device's x_max and y_max by multiplying
2628 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE.
2629 *
2630 * e.g. When we get register's sensor_x = 11 & sensor_y = 8,
2631 * real sensor line number X = 11 + 8 = 19, and
2632 * real sensor line number Y = 8 + 1 = 9.
2633 * So, x_max = (19 - 1) * 64 = 1152, and
2634 * y_max = (9 - 1) * 64 = 512.
2635 */
2636 num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F);
2637 num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F);
2638 priv->x_bits = num_x_electrode;
2639 priv->y_bits = num_y_electrode;
2640 priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE;
2641 priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE;
2642
2643 if (alps_exit_command_mode(psmouse))
2644 return -1;
2645
2646 return 0;
2647}
2648
2649static int alps_hw_init_dolphin_v1(struct psmouse *psmouse)
2650{
2651 struct ps2dev *ps2dev = &psmouse->ps2dev;
2652 unsigned char param[2];
2653
2654 /* This is dolphin "v1" as empirically defined by florin9doi */
2655 param[0] = 0x64;
2656 param[1] = 0x28;
2657
2658 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
2659 ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
2660 ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE))
2661 return -1;
2662
2663 return 0;
2664}
2665
2666static int alps_hw_init_v7(struct psmouse *psmouse)
2667{
2668 struct ps2dev *ps2dev = &psmouse->ps2dev;
2669 int reg_val, ret = -1;
2670
2671 if (alps_enter_command_mode(psmouse) ||
2672 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1)
2673 goto error;
2674
2675 if (alps_get_v3_v7_resolution(psmouse, 0xc397))
2676 goto error;
2677
2678 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64))
2679 goto error;
2680
2681 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4);
2682 if (reg_val == -1)
2683 goto error;
2684 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02))
2685 goto error;
2686
2687 alps_exit_command_mode(psmouse);
2688 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
2689
2690error:
2691 alps_exit_command_mode(psmouse);
2692 return ret;
2693}
2694
2695static int alps_hw_init_ss4_v2(struct psmouse *psmouse)
2696{
2697 struct ps2dev *ps2dev = &psmouse->ps2dev;
2698 char param[2] = {0x64, 0x28};
2699 int ret = -1;
2700
2701 /* enter absolute mode */
2702 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
2703 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
2704 ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
2705 ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE)) {
2706 goto error;
2707 }
2708
2709 /* T.B.D. Decread noise packet number, delete in the future */
2710 if (alps_exit_command_mode(psmouse) ||
2711 alps_enter_command_mode(psmouse) ||
2712 alps_command_mode_write_reg(psmouse, 0x001D, 0x20)) {
2713 goto error;
2714 }
2715 alps_exit_command_mode(psmouse);
2716
2717 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
2718
2719error:
2720 alps_exit_command_mode(psmouse);
2721 return ret;
2722}
2723
2724static int alps_set_protocol(struct psmouse *psmouse,
2725 struct alps_data *priv,
2726 const struct alps_protocol_info *protocol)
2727{
2728 psmouse->private = priv;
2729
2730 timer_setup(&priv->timer, alps_flush_packet, 0);
2731
2732 priv->proto_version = protocol->version;
2733 priv->byte0 = protocol->byte0;
2734 priv->mask0 = protocol->mask0;
2735 priv->flags = protocol->flags;
2736
2737 priv->x_max = 2000;
2738 priv->y_max = 1400;
2739 priv->x_bits = 15;
2740 priv->y_bits = 11;
2741
2742 switch (priv->proto_version) {
2743 case ALPS_PROTO_V1:
2744 case ALPS_PROTO_V2:
2745 priv->hw_init = alps_hw_init_v1_v2;
2746 priv->process_packet = alps_process_packet_v1_v2;
2747 priv->set_abs_params = alps_set_abs_params_st;
2748 priv->x_max = 1023;
2749 priv->y_max = 767;
2750 if (dmi_check_system(alps_dmi_has_separate_stick_buttons))
2751 priv->flags |= ALPS_STICK_BITS;
2752 break;
2753
2754 case ALPS_PROTO_V3:
2755 priv->hw_init = alps_hw_init_v3;
2756 priv->process_packet = alps_process_packet_v3;
2757 priv->set_abs_params = alps_set_abs_params_semi_mt;
2758 priv->decode_fields = alps_decode_pinnacle;
2759 priv->nibble_commands = alps_v3_nibble_commands;
2760 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2761
2762 if (alps_probe_trackstick_v3_v7(psmouse,
2763 ALPS_REG_BASE_PINNACLE) < 0)
2764 priv->flags &= ~ALPS_DUALPOINT;
2765
2766 break;
2767
2768 case ALPS_PROTO_V3_RUSHMORE:
2769 priv->hw_init = alps_hw_init_rushmore_v3;
2770 priv->process_packet = alps_process_packet_v3;
2771 priv->set_abs_params = alps_set_abs_params_semi_mt;
2772 priv->decode_fields = alps_decode_rushmore;
2773 priv->nibble_commands = alps_v3_nibble_commands;
2774 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2775 priv->x_bits = 16;
2776 priv->y_bits = 12;
2777
2778 if (alps_probe_trackstick_v3_v7(psmouse,
2779 ALPS_REG_BASE_RUSHMORE) < 0)
2780 priv->flags &= ~ALPS_DUALPOINT;
2781
2782 break;
2783
2784 case ALPS_PROTO_V4:
2785 priv->hw_init = alps_hw_init_v4;
2786 priv->process_packet = alps_process_packet_v4;
2787 priv->set_abs_params = alps_set_abs_params_semi_mt;
2788 priv->nibble_commands = alps_v4_nibble_commands;
2789 priv->addr_command = PSMOUSE_CMD_DISABLE;
2790 break;
2791
2792 case ALPS_PROTO_V5:
2793 priv->hw_init = alps_hw_init_dolphin_v1;
2794 priv->process_packet = alps_process_touchpad_packet_v3_v5;
2795 priv->decode_fields = alps_decode_dolphin;
2796 priv->set_abs_params = alps_set_abs_params_semi_mt;
2797 priv->nibble_commands = alps_v3_nibble_commands;
2798 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2799 priv->x_bits = 23;
2800 priv->y_bits = 12;
2801
2802 if (alps_dolphin_get_device_area(psmouse, priv))
2803 return -EIO;
2804
2805 break;
2806
2807 case ALPS_PROTO_V6:
2808 priv->hw_init = alps_hw_init_v6;
2809 priv->process_packet = alps_process_packet_v6;
2810 priv->set_abs_params = alps_set_abs_params_st;
2811 priv->nibble_commands = alps_v6_nibble_commands;
2812 priv->x_max = 2047;
2813 priv->y_max = 1535;
2814 break;
2815
2816 case ALPS_PROTO_V7:
2817 priv->hw_init = alps_hw_init_v7;
2818 priv->process_packet = alps_process_packet_v7;
2819 priv->decode_fields = alps_decode_packet_v7;
2820 priv->set_abs_params = alps_set_abs_params_v7;
2821 priv->nibble_commands = alps_v3_nibble_commands;
2822 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2823 priv->x_max = 0xfff;
2824 priv->y_max = 0x7ff;
2825
2826 if (priv->fw_ver[1] != 0xba)
2827 priv->flags |= ALPS_BUTTONPAD;
2828
2829 if (alps_probe_trackstick_v3_v7(psmouse, ALPS_REG_BASE_V7) < 0)
2830 priv->flags &= ~ALPS_DUALPOINT;
2831
2832 break;
2833
2834 case ALPS_PROTO_V8:
2835 priv->hw_init = alps_hw_init_ss4_v2;
2836 priv->process_packet = alps_process_packet_ss4_v2;
2837 priv->decode_fields = alps_decode_ss4_v2;
2838 priv->set_abs_params = alps_set_abs_params_ss4_v2;
2839 priv->nibble_commands = alps_v3_nibble_commands;
2840 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2841
2842 if (alps_set_defaults_ss4_v2(psmouse, priv))
2843 return -EIO;
2844
2845 break;
2846 }
2847
2848 return 0;
2849}
2850
2851static const struct alps_protocol_info *alps_match_table(unsigned char *e7,
2852 unsigned char *ec)
2853{
2854 const struct alps_model_info *model;
2855 int i;
2856
2857 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) {
2858 model = &alps_model_data[i];
2859
2860 if (!memcmp(e7, model->signature, sizeof(model->signature)))
2861 return &model->protocol_info;
2862 }
2863
2864 return NULL;
2865}
2866
2867static int alps_identify(struct psmouse *psmouse, struct alps_data *priv)
2868{
2869 const struct alps_protocol_info *protocol;
2870 unsigned char e6[4], e7[4], ec[4];
2871 int error;
2872
2873 /*
2874 * First try "E6 report".
2875 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed.
2876 * The bits 0-2 of the first byte will be 1s if some buttons are
2877 * pressed.
2878 */
2879 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
2880 PSMOUSE_CMD_SETSCALE11, e6))
2881 return -EIO;
2882
2883 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100))
2884 return -EINVAL;
2885
2886 /*
2887 * Now get the "E7" and "EC" reports. These will uniquely identify
2888 * most ALPS touchpads.
2889 */
2890 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
2891 PSMOUSE_CMD_SETSCALE21, e7) ||
2892 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
2893 PSMOUSE_CMD_RESET_WRAP, ec) ||
2894 alps_exit_command_mode(psmouse))
2895 return -EIO;
2896
2897 protocol = alps_match_table(e7, ec);
2898 if (!protocol) {
2899 if (e7[0] == 0x73 && e7[1] == 0x02 && e7[2] == 0x64 &&
2900 ec[2] == 0x8a) {
2901 protocol = &alps_v4_protocol_data;
2902 } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 &&
2903 ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) {
2904 protocol = &alps_v5_protocol_data;
2905 } else if (ec[0] == 0x88 &&
2906 ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) {
2907 protocol = &alps_v7_protocol_data;
2908 } else if (ec[0] == 0x88 && ec[1] == 0x08) {
2909 protocol = &alps_v3_rushmore_data;
2910 } else if (ec[0] == 0x88 && ec[1] == 0x07 &&
2911 ec[2] >= 0x90 && ec[2] <= 0x9d) {
2912 protocol = &alps_v3_protocol_data;
2913 } else if (e7[0] == 0x73 && e7[1] == 0x03 &&
2914 (e7[2] == 0x14 || e7[2] == 0x28)) {
2915 protocol = &alps_v8_protocol_data;
2916 } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0xc8) {
2917 protocol = &alps_v9_protocol_data;
2918 psmouse_warn(psmouse,
2919 "Unsupported ALPS V9 touchpad: E7=%3ph, EC=%3ph\n",
2920 e7, ec);
2921 return -EINVAL;
2922 } else {
2923 psmouse_dbg(psmouse,
2924 "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec);
2925 return -EINVAL;
2926 }
2927 }
2928
2929 if (priv) {
2930 /* Save Device ID and Firmware version */
2931 memcpy(priv->dev_id, e7, 3);
2932 memcpy(priv->fw_ver, ec, 3);
2933 error = alps_set_protocol(psmouse, priv, protocol);
2934 if (error)
2935 return error;
2936 }
2937
2938 return 0;
2939}
2940
2941static int alps_reconnect(struct psmouse *psmouse)
2942{
2943 struct alps_data *priv = psmouse->private;
2944
2945 psmouse_reset(psmouse);
2946
2947 if (alps_identify(psmouse, priv) < 0)
2948 return -1;
2949
2950 return priv->hw_init(psmouse);
2951}
2952
2953static void alps_disconnect(struct psmouse *psmouse)
2954{
2955 struct alps_data *priv = psmouse->private;
2956
2957 psmouse_reset(psmouse);
2958 del_timer_sync(&priv->timer);
2959 if (priv->dev2)
2960 input_unregister_device(priv->dev2);
2961 if (!IS_ERR_OR_NULL(priv->dev3))
2962 input_unregister_device(priv->dev3);
2963 kfree(priv);
2964}
2965
2966static void alps_set_abs_params_st(struct alps_data *priv,
2967 struct input_dev *dev1)
2968{
2969 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0);
2970 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0);
2971 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
2972}
2973
2974static void alps_set_abs_params_mt_common(struct alps_data *priv,
2975 struct input_dev *dev1)
2976{
2977 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0);
2978 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0);
2979
2980 input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res);
2981 input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res);
2982
2983 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit);
2984 set_bit(BTN_TOOL_QUADTAP, dev1->keybit);
2985}
2986
2987static void alps_set_abs_params_semi_mt(struct alps_data *priv,
2988 struct input_dev *dev1)
2989{
2990 alps_set_abs_params_mt_common(priv, dev1);
2991 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
2992
2993 input_mt_init_slots(dev1, MAX_TOUCHES,
2994 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED |
2995 INPUT_MT_SEMI_MT);
2996}
2997
2998static void alps_set_abs_params_v7(struct alps_data *priv,
2999 struct input_dev *dev1)
3000{
3001 alps_set_abs_params_mt_common(priv, dev1);
3002 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit);
3003
3004 input_mt_init_slots(dev1, MAX_TOUCHES,
3005 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED |
3006 INPUT_MT_TRACK);
3007
3008 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit);
3009}
3010
3011static void alps_set_abs_params_ss4_v2(struct alps_data *priv,
3012 struct input_dev *dev1)
3013{
3014 alps_set_abs_params_mt_common(priv, dev1);
3015 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
3016 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit);
3017
3018 input_mt_init_slots(dev1, MAX_TOUCHES,
3019 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED |
3020 INPUT_MT_TRACK);
3021}
3022
3023int alps_init(struct psmouse *psmouse)
3024{
3025 struct alps_data *priv = psmouse->private;
3026 struct input_dev *dev1 = psmouse->dev;
3027 int error;
3028
3029 error = priv->hw_init(psmouse);
3030 if (error)
3031 goto init_fail;
3032
3033 /*
3034 * Undo part of setup done for us by psmouse core since touchpad
3035 * is not a relative device.
3036 */
3037 __clear_bit(EV_REL, dev1->evbit);
3038 __clear_bit(REL_X, dev1->relbit);
3039 __clear_bit(REL_Y, dev1->relbit);
3040
3041 /*
3042 * Now set up our capabilities.
3043 */
3044 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY);
3045 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH);
3046 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER);
3047 dev1->keybit[BIT_WORD(BTN_LEFT)] |=
3048 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
3049
3050 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS);
3051
3052 priv->set_abs_params(priv, dev1);
3053
3054 if (priv->flags & ALPS_WHEEL) {
3055 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL);
3056 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL);
3057 }
3058
3059 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
3060 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD);
3061 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK);
3062 }
3063
3064 if (priv->flags & ALPS_FOUR_BUTTONS) {
3065 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0);
3066 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1);
3067 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2);
3068 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3);
3069 } else if (priv->flags & ALPS_BUTTONPAD) {
3070 set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit);
3071 clear_bit(BTN_RIGHT, dev1->keybit);
3072 } else {
3073 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE);
3074 }
3075
3076 if (priv->flags & ALPS_DUALPOINT) {
3077 struct input_dev *dev2;
3078
3079 dev2 = input_allocate_device();
3080 if (!dev2) {
3081 psmouse_err(psmouse,
3082 "failed to allocate trackstick device\n");
3083 error = -ENOMEM;
3084 goto init_fail;
3085 }
3086
3087 snprintf(priv->phys2, sizeof(priv->phys2), "%s/input1",
3088 psmouse->ps2dev.serio->phys);
3089 dev2->phys = priv->phys2;
3090
3091 /*
3092 * format of input device name is: "protocol vendor name"
3093 * see function psmouse_switch_protocol() in psmouse-base.c
3094 */
3095 dev2->name = "AlpsPS/2 ALPS DualPoint Stick";
3096
3097 dev2->id.bustype = BUS_I8042;
3098 dev2->id.vendor = 0x0002;
3099 dev2->id.product = PSMOUSE_ALPS;
3100 dev2->id.version = priv->proto_version;
3101 dev2->dev.parent = &psmouse->ps2dev.serio->dev;
3102
3103 input_set_capability(dev2, EV_REL, REL_X);
3104 input_set_capability(dev2, EV_REL, REL_Y);
3105 if (priv->flags & ALPS_DUALPOINT_WITH_PRESSURE) {
3106 input_set_capability(dev2, EV_ABS, ABS_PRESSURE);
3107 input_set_abs_params(dev2, ABS_PRESSURE, 0, 127, 0, 0);
3108 }
3109 input_set_capability(dev2, EV_KEY, BTN_LEFT);
3110 input_set_capability(dev2, EV_KEY, BTN_RIGHT);
3111 input_set_capability(dev2, EV_KEY, BTN_MIDDLE);
3112
3113 __set_bit(INPUT_PROP_POINTER, dev2->propbit);
3114 __set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit);
3115
3116 error = input_register_device(dev2);
3117 if (error) {
3118 psmouse_err(psmouse,
3119 "failed to register trackstick device: %d\n",
3120 error);
3121 input_free_device(dev2);
3122 goto init_fail;
3123 }
3124
3125 priv->dev2 = dev2;
3126 }
3127
3128 priv->psmouse = psmouse;
3129
3130 INIT_DELAYED_WORK(&priv->dev3_register_work,
3131 alps_register_bare_ps2_mouse);
3132
3133 psmouse->protocol_handler = alps_process_byte;
3134 psmouse->poll = alps_poll;
3135 psmouse->disconnect = alps_disconnect;
3136 psmouse->reconnect = alps_reconnect;
3137 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6;
3138
3139 /* We are having trouble resyncing ALPS touchpads so disable it for now */
3140 psmouse->resync_time = 0;
3141
3142 /* Allow 2 invalid packets without resetting device */
3143 psmouse->resetafter = psmouse->pktsize * 2;
3144
3145 return 0;
3146
3147init_fail:
3148 psmouse_reset(psmouse);
3149 /*
3150 * Even though we did not allocate psmouse->private we do free
3151 * it here.
3152 */
3153 kfree(psmouse->private);
3154 psmouse->private = NULL;
3155 return error;
3156}
3157
3158int alps_detect(struct psmouse *psmouse, bool set_properties)
3159{
3160 struct alps_data *priv;
3161 int error;
3162
3163 error = alps_identify(psmouse, NULL);
3164 if (error)
3165 return error;
3166
3167 /*
3168 * Reset the device to make sure it is fully operational:
3169 * on some laptops, like certain Dell Latitudes, we may
3170 * fail to properly detect presence of trackstick if device
3171 * has not been reset.
3172 */
3173 psmouse_reset(psmouse);
3174
3175 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL);
3176 if (!priv)
3177 return -ENOMEM;
3178
3179 error = alps_identify(psmouse, priv);
3180 if (error) {
3181 kfree(priv);
3182 return error;
3183 }
3184
3185 if (set_properties) {
3186 psmouse->vendor = "ALPS";
3187 psmouse->name = priv->flags & ALPS_DUALPOINT ?
3188 "DualPoint TouchPad" : "GlidePoint";
3189 psmouse->model = priv->proto_version;
3190 } else {
3191 /*
3192 * Destroy alps_data structure we allocated earlier since
3193 * this was just a "trial run". Otherwise we'll keep it
3194 * to be used by alps_init() which has to be called if
3195 * we succeed and set_properties is true.
3196 */
3197 kfree(priv);
3198 psmouse->private = NULL;
3199 }
3200
3201 return 0;
3202}
3203
3204