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Input: cypress_ps2 - fix trackpadi found in Dell XPS12
[mirror_ubuntu-bionic-kernel.git] / drivers / input / mouse / alps.c
CommitLineData
1da177e4
LT		 1/*
2 * ALPS touchpad PS/2 mouse driver
3 *
4 * Copyright (c) 2003 Neil Brown <neilb@cse.unsw.edu.au>
963f626d 5 * Copyright (c) 2003-2005 Peter Osterlund <petero2@telia.com>
1da177e4
LT		 6 * Copyright (c) 2004 Dmitry Torokhov <dtor@mail.ru>
7 * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
1d9f2626 8 * Copyright (c) 2009 Sebastian Kapfer <sebastian_kapfer@gmx.net>
1da177e4
LT		 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
5a0e3ad6 18#include <linux/slab.h>
1da177e4 19#include <linux/input.h>
01ce661f 20#include <linux/input/mt.h>
1da177e4
LT		 21#include <linux/serio.h>
22#include <linux/libps2.h>
23
24#include "psmouse.h"
25#include "alps.h"
26
25bded7c
SF		 27/*
28 * Definitions for ALPS version 3 and 4 command mode protocol
29 */
30#define ALPS_CMD_NIBBLE_10 0x01f2
31
cd401204
KC		 32#define ALPS_REG_BASE_RUSHMORE 0xc2c0
33#define ALPS_REG_BASE_PINNACLE 0x0000
34
25bded7c
SF		 35static const struct alps_nibble_commands alps_v3_nibble_commands[] = {
36 { PSMOUSE_CMD_SETPOLL, 0x00 }, /* 0 */
37 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */
38 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */
39 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */
40 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */
41 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */
42 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */
43 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */
44 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */
45 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */
46 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */
47 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */
48 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */
49 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */
50 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */
51 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */
52};
53
54static const struct alps_nibble_commands alps_v4_nibble_commands[] = {
55 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */
56 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */
57 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */
58 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */
59 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */
60 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */
61 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */
62 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */
63 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */
64 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */
65 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */
66 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */
67 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */
68 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */
69 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */
70 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */
71};
72
73
71bb21b6
ML		 74#define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */
75#define ALPS_PASS 0x04 /* device has a pass-through port */
76
77#define ALPS_WHEEL 0x08 /* hardware wheel present */
78#define ALPS_FW_BK_1 0x10 /* front & back buttons present */
79#define ALPS_FW_BK_2 0x20 /* front & back buttons present */
80#define ALPS_FOUR_BUTTONS 0x40 /* 4 direction button present */
1d9f2626
SK		 81#define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with
82 6-byte ALPS packet */
1da177e4 83
e38de678 84static const struct alps_model_info alps_model_data[] = {
25bded7c
SF		 85 { { 0x32, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Toshiba Salellite Pro M10 */
86 { { 0x33, 0x02, 0x0a }, 0x00, ALPS_PROTO_V1, 0x88, 0xf8, 0 }, /* UMAX-530T */
87 { { 0x53, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
88 { { 0x53, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
89 { { 0x60, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, /* HP ze1115 */
90 { { 0x63, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
91 { { 0x63, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
92 { { 0x63, 0x02, 0x28 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Fujitsu Siemens S6010 */
93 { { 0x63, 0x02, 0x3c }, 0x00, ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL }, /* Toshiba Satellite S2400-103 */
94 { { 0x63, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 }, /* NEC Versa L320 */
95 { { 0x63, 0x02, 0x64 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
96 { { 0x63, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D800 */
97 { { 0x73, 0x00, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT }, /* ThinkPad R61 8918-5QG */
98 { { 0x73, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
99 { { 0x73, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Ahtec Laptop */
100 { { 0x20, 0x02, 0x0e }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* XXX */
101 { { 0x22, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT },
102 { { 0x22, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D600 */
1d9f2626 103 /* Dell Latitude E5500, E6400, E6500, Precision M4400 */
25bded7c 104 { { 0x62, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf,
1d9f2626 105 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED },
25bded7c
SF		 106 { { 0x73, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS }, /* Dell Vostro 1400 */
107 { { 0x52, 0x01, 0x14 }, 0x00, ALPS_PROTO_V2, 0xff, 0xff,
108 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED }, /* Toshiba Tecra A11-11L */
25bded7c 109 { { 0x73, 0x02, 0x64 }, 0x8a, ALPS_PROTO_V4, 0x8f, 0x8f, 0 },
1da177e4
LT		 110};
111
24af5cb9
KC		 112static void alps_set_abs_params_st(struct alps_data *priv,
113 struct input_dev *dev1);
114static void alps_set_abs_params_mt(struct alps_data *priv,
115 struct input_dev *dev1);
116
1da177e4
LT		 117/*
118 * XXX - this entry is suspicious. First byte has zero lower nibble,
119 * which is what a normal mouse would report. Also, the value 0x0e
120 * isn't valid per PS/2 spec.
121 */
122
d4b347b2 123/* Packet formats are described in Documentation/input/alps.txt */
1da177e4 124
99df65e7 125static bool alps_is_valid_first_byte(struct alps_data *priv,
1d9f2626
SK		 126 unsigned char data)
127{
99df65e7 128 return (data & priv->mask0) == priv->byte0;
1d9f2626
SK		 129}
130
131static void alps_report_buttons(struct psmouse *psmouse,
132 struct input_dev *dev1, struct input_dev *dev2,
133 int left, int right, int middle)
134{
c91ed059
MB		 135 struct input_dev *dev;
136
137 /*
138 * If shared button has already been reported on the
139 * other device (dev2) then this event should be also
140 * sent through that device.
141 */
142 dev = test_bit(BTN_LEFT, dev2->key) ? dev2 : dev1;
143 input_report_key(dev, BTN_LEFT, left);
144
145 dev = test_bit(BTN_RIGHT, dev2->key) ? dev2 : dev1;
146 input_report_key(dev, BTN_RIGHT, right);
147
148 dev = test_bit(BTN_MIDDLE, dev2->key) ? dev2 : dev1;
149 input_report_key(dev, BTN_MIDDLE, middle);
150
151 /*
152 * Sync the _other_ device now, we'll do the first
153 * device later once we report the rest of the events.
154 */
155 input_sync(dev2);
1d9f2626
SK		 156}
157
25bded7c 158static void alps_process_packet_v1_v2(struct psmouse *psmouse)
1da177e4
LT		 159{
160 struct alps_data *priv = psmouse->private;
161 unsigned char *packet = psmouse->packet;
2e5b636b
DT		 162 struct input_dev *dev = psmouse->dev;
163 struct input_dev *dev2 = priv->dev2;
1da177e4 164 int x, y, z, ges, fin, left, right, middle;
c30b4c10 165 int back = 0, forward = 0;
1da177e4 166
99df65e7 167 if (priv->proto_version == ALPS_PROTO_V1) {
d2f4012f
YM		 168 left = packet[2] & 0x10;
169 right = packet[2] & 0x08;
1da177e4
LT		 170 middle = 0;
171 x = packet[1] | ((packet[0] & 0x07) << 7);
172 y = packet[4] | ((packet[3] & 0x07) << 7);
173 z = packet[5];
174 } else {
175 left = packet[3] & 1;
176 right = packet[3] & 2;
177 middle = packet[3] & 4;
178 x = packet[1] | ((packet[2] & 0x78) << (7 - 3));
179 y = packet[4] | ((packet[3] & 0x70) << (7 - 4));
180 z = packet[5];
181 }
182
99df65e7 183 if (priv->flags & ALPS_FW_BK_1) {
3c00bb96
LK		 184 back = packet[0] & 0x10;
185 forward = packet[2] & 4;
c30b4c10
ICR		 186 }
187
99df65e7 188 if (priv->flags & ALPS_FW_BK_2) {
c30b4c10
ICR		 189 back = packet[3] & 4;
190 forward = packet[2] & 4;
191 if ((middle = forward && back))
192 forward = back = 0;
193 }
194
1da177e4
LT		 195 ges = packet[2] & 1;
196 fin = packet[2] & 2;
197
99df65e7 198 if ((priv->flags & ALPS_DUALPOINT) && z == 127) {
1da177e4
LT		 199 input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x));
200 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y));
d7ed5d88 201
1d9f2626 202 alps_report_buttons(psmouse, dev2, dev, left, right, middle);
d7ed5d88 203
1da177e4
LT		 204 input_sync(dev2);
205 return;
206 }
207
1d9f2626 208 alps_report_buttons(psmouse, dev, dev2, left, right, middle);
d7ed5d88 209
1da177e4 210 /* Convert hardware tap to a reasonable Z value */
71bb21b6
ML		 211 if (ges && !fin)
212 z = 40;
1da177e4
LT		 213
214 /*
215 * A "tap and drag" operation is reported by the hardware as a transition
216 * from (!fin && ges) to (fin && ges). This should be translated to the
217 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually.
218 */
219 if (ges && fin && !priv->prev_fin) {
220 input_report_abs(dev, ABS_X, x);
221 input_report_abs(dev, ABS_Y, y);
222 input_report_abs(dev, ABS_PRESSURE, 0);
223 input_report_key(dev, BTN_TOOL_FINGER, 0);
224 input_sync(dev);
225 }
226 priv->prev_fin = fin;
227
71bb21b6
ML		 228 if (z > 30)
229 input_report_key(dev, BTN_TOUCH, 1);
230 if (z < 25)
231 input_report_key(dev, BTN_TOUCH, 0);
1da177e4
LT		 232
233 if (z > 0) {
234 input_report_abs(dev, ABS_X, x);
235 input_report_abs(dev, ABS_Y, y);
236 }
237
238 input_report_abs(dev, ABS_PRESSURE, z);
239 input_report_key(dev, BTN_TOOL_FINGER, z > 0);
240
99df65e7 241 if (priv->flags & ALPS_WHEEL)
e6c047b9 242 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07));
1da177e4 243
99df65e7 244 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
c30b4c10
ICR		 245 input_report_key(dev, BTN_FORWARD, forward);
246 input_report_key(dev, BTN_BACK, back);
1da177e4
LT		 247 }
248
99df65e7 249 if (priv->flags & ALPS_FOUR_BUTTONS) {
71bb21b6
ML		 250 input_report_key(dev, BTN_0, packet[2] & 4);
251 input_report_key(dev, BTN_1, packet[0] & 0x10);
252 input_report_key(dev, BTN_2, packet[3] & 4);
253 input_report_key(dev, BTN_3, packet[0] & 0x20);
254 }
255
1da177e4
LT		 256 input_sync(dev);
257}
258
01ce661f
SF		 259/*
260 * Process bitmap data from v3 and v4 protocols. Returns the number of
261 * fingers detected. A return value of 0 means at least one of the
262 * bitmaps was empty.
263 *
264 * The bitmaps don't have enough data to track fingers, so this function
265 * only generates points representing a bounding box of all contacts.
266 * These points are returned in x1, y1, x2, and y2 when the return value
267 * is greater than 0.
268 */
7a9f73e7
KC		 269static int alps_process_bitmap(struct alps_data *priv,
270 unsigned int x_map, unsigned int y_map,
01ce661f
SF		 271 int *x1, int *y1, int *x2, int *y2)
272{
273 struct alps_bitmap_point {
274 int start_bit;
275 int num_bits;
276 };
277
278 int fingers_x = 0, fingers_y = 0, fingers;
279 int i, bit, prev_bit;
280 struct alps_bitmap_point x_low = {0,}, x_high = {0,};
281 struct alps_bitmap_point y_low = {0,}, y_high = {0,};
282 struct alps_bitmap_point *point;
283
284 if (!x_map || !y_map)
285 return 0;
286
287 *x1 = *y1 = *x2 = *y2 = 0;
288
289 prev_bit = 0;
290 point = &x_low;
291 for (i = 0; x_map != 0; i++, x_map >>= 1) {
292 bit = x_map & 1;
293 if (bit) {
294 if (!prev_bit) {
295 point->start_bit = i;
296 fingers_x++;
297 }
298 point->num_bits++;
299 } else {
300 if (prev_bit)
301 point = &x_high;
302 else
303 point->num_bits = 0;
304 }
305 prev_bit = bit;
306 }
307
308 /*
309 * y bitmap is reversed for what we need (lower positions are in
310 * higher bits), so we process from the top end.
311 */
7a9f73e7 312 y_map = y_map << (sizeof(y_map) * BITS_PER_BYTE - priv->y_bits);
01ce661f
SF		 313 prev_bit = 0;
314 point = &y_low;
315 for (i = 0; y_map != 0; i++, y_map <<= 1) {
316 bit = y_map & (1 << (sizeof(y_map) * BITS_PER_BYTE - 1));
317 if (bit) {
318 if (!prev_bit) {
319 point->start_bit = i;
320 fingers_y++;
321 }
322 point->num_bits++;
323 } else {
324 if (prev_bit)
325 point = &y_high;
326 else
327 point->num_bits = 0;
328 }
329 prev_bit = bit;
330 }
331
332 /*
333 * Fingers can overlap, so we use the maximum count of fingers
334 * on either axis as the finger count.
335 */
336 fingers = max(fingers_x, fingers_y);
337
338 /*
339 * If total fingers is > 1 but either axis reports only a single
340 * contact, we have overlapping or adjacent fingers. For the
341 * purposes of creating a bounding box, divide the single contact
342 * (roughly) equally between the two points.
343 */
344 if (fingers > 1) {
345 if (fingers_x == 1) {
346 i = x_low.num_bits / 2;
347 x_low.num_bits = x_low.num_bits - i;
348 x_high.start_bit = x_low.start_bit + i;
349 x_high.num_bits = max(i, 1);
350 } else if (fingers_y == 1) {
351 i = y_low.num_bits / 2;
352 y_low.num_bits = y_low.num_bits - i;
353 y_high.start_bit = y_low.start_bit + i;
354 y_high.num_bits = max(i, 1);
355 }
356 }
357
7a9f73e7
KC		 358 *x1 = (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) /
359 (2 * (priv->x_bits - 1));
360 *y1 = (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) /
361 (2 * (priv->y_bits - 1));
01ce661f
SF		 362
363 if (fingers > 1) {
7a9f73e7
KC		 364 *x2 = (priv->x_max *
365 (2 * x_high.start_bit + x_high.num_bits - 1)) /
366 (2 * (priv->x_bits - 1));
367 *y2 = (priv->y_max *
368 (2 * y_high.start_bit + y_high.num_bits - 1)) /
369 (2 * (priv->y_bits - 1));
01ce661f
SF		 370 }
371
372 return fingers;
373}
374
375static void alps_set_slot(struct input_dev *dev, int slot, bool active,
376 int x, int y)
377{
378 input_mt_slot(dev, slot);
379 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
380 if (active) {
381 input_report_abs(dev, ABS_MT_POSITION_X, x);
382 input_report_abs(dev, ABS_MT_POSITION_Y, y);
383 }
384}
385
386static void alps_report_semi_mt_data(struct input_dev *dev, int num_fingers,
387 int x1, int y1, int x2, int y2)
388{
389 alps_set_slot(dev, 0, num_fingers != 0, x1, y1);
390 alps_set_slot(dev, 1, num_fingers == 2, x2, y2);
391}
392
25bded7c
SF		 393static void alps_process_trackstick_packet_v3(struct psmouse *psmouse)
394{
395 struct alps_data *priv = psmouse->private;
396 unsigned char *packet = psmouse->packet;
397 struct input_dev *dev = priv->dev2;
398 int x, y, z, left, right, middle;
399
400 /* Sanity check packet */
401 if (!(packet[0] & 0x40)) {
402 psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n");
403 return;
404 }
405
406 /*
407 * There's a special packet that seems to indicate the end
408 * of a stream of trackstick data. Filter these out.
409 */
410 if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f)
411 return;
412
413 x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f));
414 y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f));
415 z = (packet[4] & 0x7c) >> 2;
416
417 /*
418 * The x and y values tend to be quite large, and when used
419 * alone the trackstick is difficult to use. Scale them down
420 * to compensate.
421 */
422 x /= 8;
423 y /= 8;
424
425 input_report_rel(dev, REL_X, x);
426 input_report_rel(dev, REL_Y, -y);
427
428 /*
429 * Most ALPS models report the trackstick buttons in the touchpad
430 * packets, but a few report them here. No reliable way has been
431 * found to differentiate between the models upfront, so we enable
432 * the quirk in response to seeing a button press in the trackstick
433 * packet.
434 */
435 left = packet[3] & 0x01;
436 right = packet[3] & 0x02;
437 middle = packet[3] & 0x04;
438
439 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) &&
440 (left || right || middle))
441 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS;
442
443 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) {
444 input_report_key(dev, BTN_LEFT, left);
445 input_report_key(dev, BTN_RIGHT, right);
446 input_report_key(dev, BTN_MIDDLE, middle);
447 }
448
449 input_sync(dev);
450 return;
451}
452
f85e5001
KC		 453static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p)
454{
455 f->left = !!(p[3] & 0x01);
456 f->right = !!(p[3] & 0x02);
457 f->middle = !!(p[3] & 0x04);
458
459 f->ts_left = !!(p[3] & 0x10);
460 f->ts_right = !!(p[3] & 0x20);
461 f->ts_middle = !!(p[3] & 0x40);
462}
463
464static void alps_decode_pinnacle(struct alps_fields *f, unsigned char *p)
465{
466 f->first_mp = !!(p[4] & 0x40);
467 f->is_mp = !!(p[0] & 0x40);
468
469 f->fingers = (p[5] & 0x3) + 1;
470 f->x_map = ((p[4] & 0x7e) << 8) |
471 ((p[1] & 0x7f) << 2) |
472 ((p[0] & 0x30) >> 4);
473 f->y_map = ((p[3] & 0x70) << 4) |
474 ((p[2] & 0x7f) << 1) |
475 (p[4] & 0x01);
476
477 f->x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) |
478 ((p[0] & 0x30) >> 4);
479 f->y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f);
480 f->z = p[5] & 0x7f;
481
482 alps_decode_buttons_v3(f, p);
483}
484
1302bac3
KC		 485static void alps_decode_rushmore(struct alps_fields *f, unsigned char *p)
486{
487 alps_decode_pinnacle(f, p);
488
489 f->x_map |= (p[5] & 0x10) << 11;
490 f->y_map |= (p[5] & 0x20) << 6;
491}
492
25bded7c
SF		 493static void alps_process_touchpad_packet_v3(struct psmouse *psmouse)
494{
495 struct alps_data *priv = psmouse->private;
496 unsigned char *packet = psmouse->packet;
497 struct input_dev *dev = psmouse->dev;
498 struct input_dev *dev2 = priv->dev2;
01ce661f
SF		 499 int x1 = 0, y1 = 0, x2 = 0, y2 = 0;
500 int fingers = 0, bmap_fingers;
f85e5001
KC		 501 struct alps_fields f;
502
503 priv->decode_fields(&f, packet);
25bded7c
SF		 504
505 /*
01ce661f
SF		 506 * There's no single feature of touchpad position and bitmap packets
507 * that can be used to distinguish between them. We rely on the fact
508 * that a bitmap packet should always follow a position packet with
509 * bit 6 of packet[4] set.
25bded7c
SF		 510 */
511 if (priv->multi_packet) {
25bded7c
SF		 512 /*
513 * Sometimes a position packet will indicate a multi-packet
514 * sequence, but then what follows is another position
515 * packet. Check for this, and when it happens process the
516 * position packet as usual.
517 */
f85e5001
KC		 518 if (f.is_mp) {
519 fingers = f.fingers;
7a9f73e7 520 bmap_fingers = alps_process_bitmap(priv,
f85e5001 521 f.x_map, f.y_map,
01ce661f
SF		 522 &x1, &y1, &x2, &y2);
523
25bded7c 524 /*
01ce661f
SF		 525 * We shouldn't report more than one finger if
526 * we don't have two coordinates.
25bded7c 527 */
01ce661f
SF		 528 if (fingers > 1 && bmap_fingers < 2)
529 fingers = bmap_fingers;
530
531 /* Now process position packet */
f85e5001 532 priv->decode_fields(&f, priv->multi_data);
01ce661f
SF		 533 } else {
534 priv->multi_packet = 0;
25bded7c
SF		 535 }
536 }
537
01ce661f
SF		 538 /*
539 * Bit 6 of byte 0 is not usually set in position packets. The only
540 * times it seems to be set is in situations where the data is
541 * suspect anyway, e.g. a palm resting flat on the touchpad. Given
542 * this combined with the fact that this bit is useful for filtering
543 * out misidentified bitmap packets, we reject anything with this
544 * bit set.
545 */
f85e5001 546 if (f.is_mp)
01ce661f
SF		 547 return;
548
f85e5001 549 if (!priv->multi_packet && f.first_mp) {
25bded7c 550 priv->multi_packet = 1;
01ce661f
SF		 551 memcpy(priv->multi_data, packet, sizeof(priv->multi_data));
552 return;
553 }
554
555 priv->multi_packet = 0;
25bded7c 556
25bded7c
SF		 557 /*
558 * Sometimes the hardware sends a single packet with z = 0
559 * in the middle of a stream. Real releases generate packets
560 * with x, y, and z all zero, so these seem to be flukes.
561 * Ignore them.
562 */
f85e5001 563 if (f.x && f.y && !f.z)
25bded7c
SF		 564 return;
565
01ce661f
SF		 566 /*
567 * If we don't have MT data or the bitmaps were empty, we have
568 * to rely on ST data.
569 */
570 if (!fingers) {
f85e5001
KC		 571 x1 = f.x;
572 y1 = f.y;
573 fingers = f.z > 0 ? 1 : 0;
01ce661f
SF		 574 }
575
f85e5001 576 if (f.z >= 64)
25bded7c
SF		 577 input_report_key(dev, BTN_TOUCH, 1);
578 else
579 input_report_key(dev, BTN_TOUCH, 0);
580
01ce661f
SF		 581 alps_report_semi_mt_data(dev, fingers, x1, y1, x2, y2);
582
616575c2 583 input_mt_report_finger_count(dev, fingers);
01ce661f 584
f85e5001
KC		 585 input_report_key(dev, BTN_LEFT, f.left);
586 input_report_key(dev, BTN_RIGHT, f.right);
587 input_report_key(dev, BTN_MIDDLE, f.middle);
01ce661f 588
f85e5001
KC		 589 if (f.z > 0) {
590 input_report_abs(dev, ABS_X, f.x);
591 input_report_abs(dev, ABS_Y, f.y);
25bded7c 592 }
f85e5001 593 input_report_abs(dev, ABS_PRESSURE, f.z);
25bded7c 594
25bded7c
SF		 595 input_sync(dev);
596
597 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) {
f85e5001
KC		 598 input_report_key(dev2, BTN_LEFT, f.ts_left);
599 input_report_key(dev2, BTN_RIGHT, f.ts_right);
600 input_report_key(dev2, BTN_MIDDLE, f.ts_middle);
25bded7c
SF		 601 input_sync(dev2);
602 }
603}
604
605static void alps_process_packet_v3(struct psmouse *psmouse)
606{
607 unsigned char *packet = psmouse->packet;
608
609 /*
610 * v3 protocol packets come in three types, two representing
611 * touchpad data and one representing trackstick data.
612 * Trackstick packets seem to be distinguished by always
613 * having 0x3f in the last byte. This value has never been
614 * observed in the last byte of either of the other types
615 * of packets.
616 */
617 if (packet[5] == 0x3f) {
618 alps_process_trackstick_packet_v3(psmouse);
619 return;
620 }
621
622 alps_process_touchpad_packet_v3(psmouse);
623}
624
625static void alps_process_packet_v4(struct psmouse *psmouse)
626{
3b7e09fa 627 struct alps_data *priv = psmouse->private;
25bded7c
SF		 628 unsigned char *packet = psmouse->packet;
629 struct input_dev *dev = psmouse->dev;
3b7e09fa 630 int offset;
25bded7c
SF		 631 int x, y, z;
632 int left, right;
3b7e09fa
GP		 633 int x1, y1, x2, y2;
634 int fingers = 0;
635 unsigned int x_bitmap, y_bitmap;
636
637 /*
638 * v4 has a 6-byte encoding for bitmap data, but this data is
639 * broken up between 3 normal packets. Use priv->multi_packet to
640 * track our position in the bitmap packet.
641 */
642 if (packet[6] & 0x40) {
643 /* sync, reset position */
644 priv->multi_packet = 0;
645 }
646
647 if (WARN_ON_ONCE(priv->multi_packet > 2))
648 return;
649
650 offset = 2 * priv->multi_packet;
651 priv->multi_data[offset] = packet[6];
652 priv->multi_data[offset + 1] = packet[7];
653
654 if (++priv->multi_packet > 2) {
655 priv->multi_packet = 0;
656
657 x_bitmap = ((priv->multi_data[2] & 0x1f) << 10) |
658 ((priv->multi_data[3] & 0x60) << 3) |
659 ((priv->multi_data[0] & 0x3f) << 2) |
660 ((priv->multi_data[1] & 0x60) >> 5);
661 y_bitmap = ((priv->multi_data[5] & 0x01) << 10) |
662 ((priv->multi_data[3] & 0x1f) << 5) |
663 (priv->multi_data[1] & 0x1f);
664
7a9f73e7 665 fingers = alps_process_bitmap(priv, x_bitmap, y_bitmap,
3b7e09fa
GP		 666 &x1, &y1, &x2, &y2);
667
668 /* Store MT data.*/
669 priv->fingers = fingers;
670 priv->x1 = x1;
671 priv->x2 = x2;
672 priv->y1 = y1;
673 priv->y2 = y2;
674 }
25bded7c
SF		 675
676 left = packet[4] & 0x01;
677 right = packet[4] & 0x02;
678
679 x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) |
680 ((packet[0] & 0x30) >> 4);
681 y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f);
682 z = packet[5] & 0x7f;
683
3b7e09fa
GP		 684 /*
685 * If there were no contacts in the bitmap, use ST
686 * points in MT reports.
687 * If there were two contacts or more, report MT data.
688 */
689 if (priv->fingers < 2) {
690 x1 = x;
691 y1 = y;
692 fingers = z > 0 ? 1 : 0;
693 } else {
694 fingers = priv->fingers;
695 x1 = priv->x1;
696 x2 = priv->x2;
697 y1 = priv->y1;
698 y2 = priv->y2;
699 }
700
25bded7c
SF		 701 if (z >= 64)
702 input_report_key(dev, BTN_TOUCH, 1);
703 else
704 input_report_key(dev, BTN_TOUCH, 0);
705
3b7e09fa
GP		 706 alps_report_semi_mt_data(dev, fingers, x1, y1, x2, y2);
707
616575c2 708 input_mt_report_finger_count(dev, fingers);
3b7e09fa
GP		 709
710 input_report_key(dev, BTN_LEFT, left);
711 input_report_key(dev, BTN_RIGHT, right);
712
25bded7c
SF		 713 if (z > 0) {
714 input_report_abs(dev, ABS_X, x);
715 input_report_abs(dev, ABS_Y, y);
716 }
717 input_report_abs(dev, ABS_PRESSURE, z);
718
25bded7c
SF		 719 input_sync(dev);
720}
721
1d9f2626
SK		 722static void alps_report_bare_ps2_packet(struct psmouse *psmouse,
723 unsigned char packet[],
724 bool report_buttons)
725{
726 struct alps_data *priv = psmouse->private;
727 struct input_dev *dev2 = priv->dev2;
728
729 if (report_buttons)
730 alps_report_buttons(psmouse, dev2, psmouse->dev,
731 packet[0] & 1, packet[0] & 2, packet[0] & 4);
732
733 input_report_rel(dev2, REL_X,
734 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0);
735 input_report_rel(dev2, REL_Y,
736 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0);
737
738 input_sync(dev2);
739}
740
741static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse)
742{
743 struct alps_data *priv = psmouse->private;
744
745 if (psmouse->pktcnt < 6)
746 return PSMOUSE_GOOD_DATA;
747
748 if (psmouse->pktcnt == 6) {
749 /*
750 * Start a timer to flush the packet if it ends up last
751 * 6-byte packet in the stream. Timer needs to fire
752 * psmouse core times out itself. 20 ms should be enough
753 * to decide if we are getting more data or not.
754 */
755 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20));
756 return PSMOUSE_GOOD_DATA;
757 }
758
759 del_timer(&priv->timer);
760
761 if (psmouse->packet[6] & 0x80) {
762
763 /*
764 * Highest bit is set - that means we either had
765 * complete ALPS packet and this is start of the
766 * next packet or we got garbage.
767 */
768
769 if (((psmouse->packet[3] |
770 psmouse->packet[4] |
771 psmouse->packet[5]) & 0x80) ||
99df65e7 772 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) {
b5d21704 773 psmouse_dbg(psmouse,
3b112923
AS		 774 "refusing packet %4ph (suspected interleaved ps/2)\n",
775 psmouse->packet + 3);
1d9f2626
SK		 776 return PSMOUSE_BAD_DATA;
777 }
778
24af5cb9 779 priv->process_packet(psmouse);
1d9f2626
SK		 780
781 /* Continue with the next packet */
782 psmouse->packet[0] = psmouse->packet[6];
783 psmouse->pktcnt = 1;
784
785 } else {
786
787 /*
788 * High bit is 0 - that means that we indeed got a PS/2
789 * packet in the middle of ALPS packet.
790 *
791 * There is also possibility that we got 6-byte ALPS
792 * packet followed by 3-byte packet from trackpoint. We
793 * can not distinguish between these 2 scenarios but
b5d21704 794 * because the latter is unlikely to happen in course of
1d9f2626
SK		 795 * normal operation (user would need to press all
796 * buttons on the pad and start moving trackpoint
797 * without touching the pad surface) we assume former.
798 * Even if we are wrong the wost thing that would happen
799 * the cursor would jump but we should not get protocol
b5d21704 800 * de-synchronization.
1d9f2626
SK		 801 */
802
803 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3],
804 false);
805
806 /*
807 * Continue with the standard ALPS protocol handling,
808 * but make sure we won't process it as an interleaved
809 * packet again, which may happen if all buttons are
810 * pressed. To avoid this let's reset the 4th bit which
811 * is normally 1.
812 */
813 psmouse->packet[3] = psmouse->packet[6] & 0xf7;
814 psmouse->pktcnt = 4;
815 }
816
817 return PSMOUSE_GOOD_DATA;
818}
819
820static void alps_flush_packet(unsigned long data)
821{
822 struct psmouse *psmouse = (struct psmouse *)data;
24af5cb9 823 struct alps_data *priv = psmouse->private;
1d9f2626
SK		 824
825 serio_pause_rx(psmouse->ps2dev.serio);
826
b46615fe 827 if (psmouse->pktcnt == psmouse->pktsize) {
1d9f2626
SK		 828
829 /*
830 * We did not any more data in reasonable amount of time.
831 * Validate the last 3 bytes and process as a standard
832 * ALPS packet.
833 */
834 if ((psmouse->packet[3] |
835 psmouse->packet[4] |
836 psmouse->packet[5]) & 0x80) {
b5d21704 837 psmouse_dbg(psmouse,
3b112923
AS		 838 "refusing packet %3ph (suspected interleaved ps/2)\n",
839 psmouse->packet + 3);
1d9f2626 840 } else {
24af5cb9 841 priv->process_packet(psmouse);
1d9f2626
SK		 842 }
843 psmouse->pktcnt = 0;
844 }
845
846 serio_continue_rx(psmouse->ps2dev.serio);
847}
848
7d12e780 849static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
1da177e4
LT		 850{
851 struct alps_data *priv = psmouse->private;
852
853 if ((psmouse->packet[0] & 0xc8) == 0x08) { /* PS/2 packet */
854 if (psmouse->pktcnt == 3) {
1d9f2626
SK		 855 alps_report_bare_ps2_packet(psmouse, psmouse->packet,
856 true);
1da177e4
LT		 857 return PSMOUSE_FULL_PACKET;
858 }
859 return PSMOUSE_GOOD_DATA;
860 }
861
1d9f2626
SK		 862 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */
863
99df65e7 864 if ((priv->flags & ALPS_PS2_INTERLEAVED) &&
1d9f2626
SK		 865 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) {
866 return alps_handle_interleaved_ps2(psmouse);
867 }
868
99df65e7 869 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) {
b5d21704
DT		 870 psmouse_dbg(psmouse,
871 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n",
99df65e7 872 psmouse->packet[0], priv->mask0, priv->byte0);
1da177e4 873 return PSMOUSE_BAD_DATA;
1d9f2626 874 }
1da177e4 875
b46615fe
SF		 876 /* Bytes 2 - pktsize should have 0 in the highest bit */
877 if (psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize &&
1d9f2626 878 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) {
b5d21704
DT		 879 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
880 psmouse->pktcnt - 1,
881 psmouse->packet[psmouse->pktcnt - 1]);
1da177e4 882 return PSMOUSE_BAD_DATA;
1d9f2626 883 }
1da177e4 884
b46615fe 885 if (psmouse->pktcnt == psmouse->pktsize) {
24af5cb9 886 priv->process_packet(psmouse);
1da177e4
LT		 887 return PSMOUSE_FULL_PACKET;
888 }
889
890 return PSMOUSE_GOOD_DATA;
891}
892
25bded7c
SF		 893static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble)
894{
895 struct ps2dev *ps2dev = &psmouse->ps2dev;
896 struct alps_data *priv = psmouse->private;
897 int command;
898 unsigned char *param;
899 unsigned char dummy[4];
900
901 BUG_ON(nibble > 0xf);
902
903 command = priv->nibble_commands[nibble].command;
904 param = (command & 0x0f00) ?
905 dummy : (unsigned char *)&priv->nibble_commands[nibble].data;
906
907 if (ps2_command(ps2dev, param, command))
908 return -1;
909
910 return 0;
911}
912
913static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr)
914{
915 struct ps2dev *ps2dev = &psmouse->ps2dev;
916 struct alps_data *priv = psmouse->private;
917 int i, nibble;
918
919 if (ps2_command(ps2dev, NULL, priv->addr_command))
920 return -1;
921
922 for (i = 12; i >= 0; i -= 4) {
923 nibble = (addr >> i) & 0xf;
924 if (alps_command_mode_send_nibble(psmouse, nibble))
925 return -1;
926 }
927
928 return 0;
929}
930
931static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
932{
933 struct ps2dev *ps2dev = &psmouse->ps2dev;
934 unsigned char param[4];
935
936 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
937 return -1;
938
939 /*
940 * The address being read is returned in the first two bytes
941 * of the result. Check that this address matches the expected
942 * address.
943 */
944 if (addr != ((param[0] << 8) | param[1]))
945 return -1;
946
947 return param[2];
948}
949
950static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
951{
952 if (alps_command_mode_set_addr(psmouse, addr))
953 return -1;
954 return __alps_command_mode_read_reg(psmouse, addr);
955}
956
957static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value)
958{
959 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf))
960 return -1;
961 if (alps_command_mode_send_nibble(psmouse, value & 0xf))
962 return -1;
963 return 0;
964}
965
966static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr,
967 u8 value)
968{
969 if (alps_command_mode_set_addr(psmouse, addr))
970 return -1;
971 return __alps_command_mode_write_reg(psmouse, value);
972}
973
24ba9707
KC		 974static int alps_rpt_cmd(struct psmouse *psmouse, int init_command,
975 int repeated_command, unsigned char *param)
976{
977 struct ps2dev *ps2dev = &psmouse->ps2dev;
978
979 param[0] = 0;
980 if (init_command && ps2_command(ps2dev, param, init_command))
981 return -EIO;
982
983 if (ps2_command(ps2dev, NULL, repeated_command) ||
984 ps2_command(ps2dev, NULL, repeated_command) ||
985 ps2_command(ps2dev, NULL, repeated_command))
986 return -EIO;
987
988 param[0] = param[1] = param[2] = 0xff;
989 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
990 return -EIO;
991
992 psmouse_dbg(psmouse, "%2.2X report: %2.2x %2.2x %2.2x\n",
993 repeated_command, param[0], param[1], param[2]);
994 return 0;
995}
996
25bded7c
SF		 997static int alps_enter_command_mode(struct psmouse *psmouse,
998 unsigned char *resp)
999{
1000 unsigned char param[4];
25bded7c 1001
24ba9707 1002 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) {
25bded7c
SF		 1003 psmouse_err(psmouse, "failed to enter command mode\n");
1004 return -1;
1005 }
1006
56fd340e 1007 if (param[0] != 0x88 || (param[1] != 0x07 && param[1] != 0x08)) {
25bded7c 1008 psmouse_dbg(psmouse,
24ba9707 1009 "unknown response while entering command mode\n");
25bded7c
SF		 1010 return -1;
1011 }
1012
1013 if (resp)
1014 *resp = param[2];
1015 return 0;
1016}
1017
1018static inline int alps_exit_command_mode(struct psmouse *psmouse)
1019{
1020 struct ps2dev *ps2dev = &psmouse->ps2dev;
1021 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM))
1022 return -1;
1023 return 0;
1024}
1025
1da177e4
LT		 1026/*
1027 * For DualPoint devices select the device that should respond to
1028 * subsequent commands. It looks like glidepad is behind stickpointer,
1029 * I'd thought it would be other way around...
1030 */
25bded7c 1031static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable)
1da177e4
LT		 1032{
1033 struct ps2dev *ps2dev = &psmouse->ps2dev;
1da177e4
LT		 1034 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11;
1035
1036 if (ps2_command(ps2dev, NULL, cmd) ||
1037 ps2_command(ps2dev, NULL, cmd) ||
1038 ps2_command(ps2dev, NULL, cmd) ||
1039 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1040 return -1;
1041
1042 /* we may get 3 more bytes, just ignore them */
c611763d 1043 ps2_drain(ps2dev, 3, 100);
1da177e4
LT		 1044
1045 return 0;
1046}
1047
25bded7c 1048static int alps_absolute_mode_v1_v2(struct psmouse *psmouse)
1da177e4
LT		 1049{
1050 struct ps2dev *ps2dev = &psmouse->ps2dev;
1051
1052 /* Try ALPS magic knock - 4 disable before enable */
1053 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1054 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1055 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1056 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1057 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE))
1058 return -1;
1059
1060 /*
1061 * Switch mouse to poll (remote) mode so motion data will not
1062 * get in our way
1063 */
1064 return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL);
1065}
1066
1067static int alps_get_status(struct psmouse *psmouse, char *param)
1068{
1da177e4 1069 /* Get status: 0xF5 0xF5 0xF5 0xE9 */
24ba9707 1070 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param))
1da177e4
LT		 1071 return -1;
1072
1da177e4
LT		 1073 return 0;
1074}
1075
1076/*
1077 * Turn touchpad tapping on or off. The sequences are:
1078 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable,
1079 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable.
1080 * My guess that 0xE9 (GetInfo) is here as a sync point.
1081 * For models that also have stickpointer (DualPoints) its tapping
1082 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but
1083 * we don't fiddle with it.
1084 */
1085static int alps_tap_mode(struct psmouse *psmouse, int enable)
1086{
1087 struct ps2dev *ps2dev = &psmouse->ps2dev;
1088 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES;
1089 unsigned char tap_arg = enable ? 0x0A : 0x00;
1090 unsigned char param[4];
1091
1092 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) ||
1093 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1094 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1095 ps2_command(ps2dev, &tap_arg, cmd))
1096 return -1;
1097
1098 if (alps_get_status(psmouse, param))
1099 return -1;
1100
1101 return 0;
1102}
1103
f0d5c6f4
DT		 1104/*
1105 * alps_poll() - poll the touchpad for current motion packet.
1106 * Used in resync.
1107 */
1108static int alps_poll(struct psmouse *psmouse)
1109{
1110 struct alps_data *priv = psmouse->private;
b46615fe 1111 unsigned char buf[sizeof(psmouse->packet)];
b7802c5c 1112 bool poll_failed;
f0d5c6f4 1113
99df65e7 1114 if (priv->flags & ALPS_PASS)
25bded7c 1115 alps_passthrough_mode_v2(psmouse, true);
f0d5c6f4
DT		 1116
1117 poll_failed = ps2_command(&psmouse->ps2dev, buf,
1118 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0;
1119
99df65e7 1120 if (priv->flags & ALPS_PASS)
25bded7c 1121 alps_passthrough_mode_v2(psmouse, false);
f0d5c6f4 1122
99df65e7 1123 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0)
f0d5c6f4
DT		 1124 return -1;
1125
1126 if ((psmouse->badbyte & 0xc8) == 0x08) {
1127/*
1128 * Poll the track stick ...
1129 */
1130 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8)))
1131 return -1;
1132 }
1133
1134 memcpy(psmouse->packet, buf, sizeof(buf));
1135 return 0;
1136}
1137
25bded7c 1138static int alps_hw_init_v1_v2(struct psmouse *psmouse)
1da177e4
LT		 1139{
1140 struct alps_data *priv = psmouse->private;
f3a5c73d 1141
99df65e7 1142 if ((priv->flags & ALPS_PASS) &&
25bded7c 1143 alps_passthrough_mode_v2(psmouse, true)) {
1da177e4 1144 return -1;
b7802c5c 1145 }
1da177e4 1146
b7802c5c 1147 if (alps_tap_mode(psmouse, true)) {
b5d21704 1148 psmouse_warn(psmouse, "Failed to enable hardware tapping\n");
1da177e4 1149 return -1;
963f626d 1150 }
1da177e4 1151
25bded7c 1152 if (alps_absolute_mode_v1_v2(psmouse)) {
b5d21704 1153 psmouse_err(psmouse, "Failed to enable absolute mode\n");
1da177e4
LT		 1154 return -1;
1155 }
1156
99df65e7 1157 if ((priv->flags & ALPS_PASS) &&
25bded7c 1158 alps_passthrough_mode_v2(psmouse, false)) {
1da177e4 1159 return -1;
b7802c5c 1160 }
1da177e4 1161
1e0c5b12
DT		 1162 /* ALPS needs stream mode, otherwise it won't report any data */
1163 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) {
b5d21704 1164 psmouse_err(psmouse, "Failed to enable stream mode\n");
1e0c5b12
DT		 1165 return -1;
1166 }
1167
1168 return 0;
1169}
1170
25bded7c 1171/*
cd401204 1172 * Enable or disable passthrough mode to the trackstick.
25bded7c 1173 */
cd401204
KC		 1174static int alps_passthrough_mode_v3(struct psmouse *psmouse,
1175 int reg_base, bool enable)
25bded7c 1176{
cd401204 1177 int reg_val, ret = -1;
25bded7c 1178
cd401204 1179 if (alps_enter_command_mode(psmouse, NULL))
25bded7c
SF		 1180 return -1;
1181
cd401204
KC		 1182 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008);
1183 if (reg_val == -1)
1184 goto error;
1185
25bded7c
SF		 1186 if (enable)
1187 reg_val |= 0x01;
1188 else
1189 reg_val &= ~0x01;
1190
cd401204 1191 ret = __alps_command_mode_write_reg(psmouse, reg_val);
25bded7c 1192
cd401204
KC		 1193error:
1194 if (alps_exit_command_mode(psmouse))
1195 ret = -1;
1196 return ret;
25bded7c
SF		 1197}
1198
1199/* Must be in command mode when calling this function */
1200static int alps_absolute_mode_v3(struct psmouse *psmouse)
1201{
1202 int reg_val;
1203
1204 reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
1205 if (reg_val == -1)
1206 return -1;
1207
1208 reg_val |= 0x06;
1209 if (__alps_command_mode_write_reg(psmouse, reg_val))
1210 return -1;
1211
1212 return 0;
1213}
1214
cd401204 1215static int alps_probe_trackstick_v3(struct psmouse *psmouse, int reg_base)
25bded7c 1216{
cd401204 1217 int ret = -EIO, reg_val;
25bded7c 1218
25bded7c
SF		 1219 if (alps_enter_command_mode(psmouse, NULL))
1220 goto error;
1221
cd401204 1222 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08);
25bded7c
SF		 1223 if (reg_val == -1)
1224 goto error;
cd401204
KC		 1225
1226 /* bit 7: trackstick is present */
1227 ret = reg_val & 0x80 ? 0 : -ENODEV;
1228
1229error:
1230 alps_exit_command_mode(psmouse);
1231 return ret;
1232}
1233
1234static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base)
1235{
1236 struct ps2dev *ps2dev = &psmouse->ps2dev;
1237 int ret = 0;
1238 unsigned char param[4];
1239
1240 if (alps_passthrough_mode_v3(psmouse, reg_base, true))
1241 return -EIO;
1242
1243 /*
1244 * E7 report for the trackstick
1245 *
1246 * There have been reports of failures to seem to trace back
1247 * to the above trackstick check failing. When these occur
1248 * this E7 report fails, so when that happens we continue
1249 * with the assumption that there isn't a trackstick after
1250 * all.
1251 */
1252 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) {
1253 psmouse_warn(psmouse, "trackstick E7 report failed\n");
1254 ret = -ENODEV;
1255 } else {
1256 psmouse_dbg(psmouse,
1257 "trackstick E7 report: %2.2x %2.2x %2.2x\n",
1258 param[0], param[1], param[2]);
25bded7c
SF		 1259
1260 /*
cd401204
KC		 1261 * Not sure what this does, but it is absolutely
1262 * essential. Without it, the touchpad does not
1263 * work at all and the trackstick just emits normal
1264 * PS/2 packets.
25bded7c 1265 */
cd401204
KC		 1266 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1267 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1268 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1269 alps_command_mode_send_nibble(psmouse, 0x9) ||
1270 alps_command_mode_send_nibble(psmouse, 0x4)) {
1271 psmouse_err(psmouse,
1272 "Error sending magic E6 sequence\n");
1273 ret = -EIO;
1274 goto error;
25bded7c
SF		 1275 }
1276
cd401204
KC		 1277 /*
1278 * This ensures the trackstick packets are in the format
1279 * supported by this driver. If bit 1 isn't set the packet
1280 * format is different.
1281 */
1282 if (alps_enter_command_mode(psmouse, NULL) ||
1283 alps_command_mode_write_reg(psmouse,
1284 reg_base + 0x08, 0x82) ||
1285 alps_exit_command_mode(psmouse))
1286 ret = -EIO;
25bded7c
SF		 1287 }
1288
cd401204
KC		 1289error:
1290 if (alps_passthrough_mode_v3(psmouse, reg_base, false))
1291 ret = -EIO;
1292
1293 return ret;
1294}
1295
1296static int alps_hw_init_v3(struct psmouse *psmouse)
1297{
1298 struct ps2dev *ps2dev = &psmouse->ps2dev;
1299 int reg_val;
1300 unsigned char param[4];
1301
1302 reg_val = alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE);
1303 if (reg_val == -EIO)
1304 goto error;
1305 if (reg_val == 0 &&
1306 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO)
1307 goto error;
1308
1309 if (alps_enter_command_mode(psmouse, NULL) ||
1310 alps_absolute_mode_v3(psmouse)) {
25bded7c
SF		 1311 psmouse_err(psmouse, "Failed to enter absolute mode\n");
1312 goto error;
1313 }
1314
1315 reg_val = alps_command_mode_read_reg(psmouse, 0x0006);
1316 if (reg_val == -1)
1317 goto error;
1318 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
1319 goto error;
1320
1321 reg_val = alps_command_mode_read_reg(psmouse, 0x0007);
1322 if (reg_val == -1)
1323 goto error;
1324 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
1325 goto error;
1326
1327 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1)
1328 goto error;
1329 if (__alps_command_mode_write_reg(psmouse, 0x04))
1330 goto error;
1331
1332 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1)
1333 goto error;
1334 if (__alps_command_mode_write_reg(psmouse, 0x03))
1335 goto error;
1336
1337 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1)
1338 goto error;
1339 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03))
1340 goto error;
1341
1342 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1)
1343 goto error;
1344 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04))
1345 goto error;
1346
25bded7c
SF		 1347 alps_exit_command_mode(psmouse);
1348
1349 /* Set rate and enable data reporting */
1350 param[0] = 0x64;
1351 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
1352 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
1353 psmouse_err(psmouse, "Failed to enable data reporting\n");
1354 return -1;
1355 }
1356
1357 return 0;
1358
25bded7c
SF		 1359error:
1360 /*
1361 * Leaving the touchpad in command mode will essentially render
1362 * it unusable until the machine reboots, so exit it here just
1363 * to be safe
1364 */
1365 alps_exit_command_mode(psmouse);
1366 return -1;
1367}
1368
1302bac3
KC		 1369static int alps_hw_init_rushmore_v3(struct psmouse *psmouse)
1370{
cd401204 1371 struct alps_data *priv = psmouse->private;
1302bac3
KC		 1372 struct ps2dev *ps2dev = &psmouse->ps2dev;
1373 int reg_val, ret = -1;
1374
cd401204
KC		 1375 if (priv->flags & ALPS_DUALPOINT) {
1376 reg_val = alps_setup_trackstick_v3(psmouse,
1377 ALPS_REG_BASE_RUSHMORE);
1378 if (reg_val == -EIO)
1379 goto error;
1380 if (reg_val == -ENODEV)
1381 priv->flags &= ~ALPS_DUALPOINT;
1382 }
1383
1302bac3
KC		 1384 if (alps_enter_command_mode(psmouse, NULL) ||
1385 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 ||
1386 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00))
1387 goto error;
1388
1389 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6);
1390 if (reg_val == -1)
1391 goto error;
1392 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd))
1393 goto error;
1394
1395 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64))
1396 goto error;
1397
1398 /* enter absolute mode */
1399 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4);
1400 if (reg_val == -1)
1401 goto error;
1402 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02))
1403 goto error;
1404
1405 alps_exit_command_mode(psmouse);
1406 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
1407
1408error:
1409 alps_exit_command_mode(psmouse);
1410 return ret;
1411}
1412
25bded7c
SF		 1413/* Must be in command mode when calling this function */
1414static int alps_absolute_mode_v4(struct psmouse *psmouse)
1415{
1416 int reg_val;
1417
1418 reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
1419 if (reg_val == -1)
1420 return -1;
1421
1422 reg_val |= 0x02;
1423 if (__alps_command_mode_write_reg(psmouse, reg_val))
1424 return -1;
1425
1426 return 0;
1427}
1428
1429static int alps_hw_init_v4(struct psmouse *psmouse)
1430{
25bded7c
SF		 1431 struct ps2dev *ps2dev = &psmouse->ps2dev;
1432 unsigned char param[4];
1433
25bded7c
SF		 1434 if (alps_enter_command_mode(psmouse, NULL))
1435 goto error;
1436
1437 if (alps_absolute_mode_v4(psmouse)) {
1438 psmouse_err(psmouse, "Failed to enter absolute mode\n");
1439 goto error;
1440 }
1441
1442 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c))
1443 goto error;
1444
1445 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03))
1446 goto error;
1447
1448 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03))
1449 goto error;
1450
1451 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15))
1452 goto error;
1453
1454 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01))
1455 goto error;
1456
1457 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03))
1458 goto error;
1459
1460 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03))
1461 goto error;
1462
1463 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03))
1464 goto error;
1465
1466 alps_exit_command_mode(psmouse);
1467
1468 /*
1469 * This sequence changes the output from a 9-byte to an
1470 * 8-byte format. All the same data seems to be present,
1471 * just in a more compact format.
1472 */
1473 param[0] = 0xc8;
1474 param[1] = 0x64;
1475 param[2] = 0x50;
1476 if (ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
1477 ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE) ||
1478 ps2_command(ps2dev, &param[2], PSMOUSE_CMD_SETRATE) ||
1479 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID))
1480 return -1;
1481
1482 /* Set rate and enable data reporting */
1483 param[0] = 0x64;
1484 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
1485 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
1486 psmouse_err(psmouse, "Failed to enable data reporting\n");
1487 return -1;
1488 }
1489
1490 return 0;
1491
1492error:
1493 /*
1494 * Leaving the touchpad in command mode will essentially render
1495 * it unusable until the machine reboots, so exit it here just
1496 * to be safe
1497 */
1498 alps_exit_command_mode(psmouse);
1499 return -1;
1500}
1501
24af5cb9 1502static void alps_set_defaults(struct alps_data *priv)
25bded7c 1503{
f673ceb1
KC		 1504 priv->byte0 = 0x8f;
1505 priv->mask0 = 0x8f;
1506 priv->flags = ALPS_DUALPOINT;
1507
7a9f73e7
KC		 1508 priv->x_max = 2000;
1509 priv->y_max = 1400;
1510 priv->x_bits = 15;
1511 priv->y_bits = 11;
1512
99df65e7 1513 switch (priv->proto_version) {
25bded7c
SF		 1514 case ALPS_PROTO_V1:
1515 case ALPS_PROTO_V2:
24af5cb9
KC		 1516 priv->hw_init = alps_hw_init_v1_v2;
1517 priv->process_packet = alps_process_packet_v1_v2;
1518 priv->set_abs_params = alps_set_abs_params_st;
25bded7c
SF		 1519 break;
1520 case ALPS_PROTO_V3:
24af5cb9
KC		 1521 priv->hw_init = alps_hw_init_v3;
1522 priv->process_packet = alps_process_packet_v3;
1523 priv->set_abs_params = alps_set_abs_params_mt;
f85e5001 1524 priv->decode_fields = alps_decode_pinnacle;
50e8b216
KC		 1525 priv->nibble_commands = alps_v3_nibble_commands;
1526 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
25bded7c
SF		 1527 break;
1528 case ALPS_PROTO_V4:
24af5cb9
KC		 1529 priv->hw_init = alps_hw_init_v4;
1530 priv->process_packet = alps_process_packet_v4;
1531 priv->set_abs_params = alps_set_abs_params_mt;
50e8b216
KC		 1532 priv->nibble_commands = alps_v4_nibble_commands;
1533 priv->addr_command = PSMOUSE_CMD_DISABLE;
25bded7c
SF		 1534 break;
1535 }
25bded7c
SF		 1536}
1537
b5d6b851
KC		 1538static int alps_match_table(struct psmouse *psmouse, struct alps_data *priv,
1539 unsigned char *e7, unsigned char *ec)
2e992cc0 1540{
b5d6b851 1541 const struct alps_model_info *model;
2e992cc0
KC		 1542 int i;
1543
b5d6b851
KC		 1544 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) {
1545 model = &alps_model_data[i];
1546
1547 if (!memcmp(e7, model->signature, sizeof(model->signature)) &&
1548 (!model->command_mode_resp ||
1549 model->command_mode_resp == ec[2])) {
1550
1551 priv->proto_version = model->proto_version;
24af5cb9
KC		 1552 alps_set_defaults(priv);
1553
b5d6b851
KC		 1554 priv->flags = model->flags;
1555 priv->byte0 = model->byte0;
1556 priv->mask0 = model->mask0;
1557
1558 return 0;
1559 }
1560 }
1561
1562 return -EINVAL;
1563}
1564
1565static int alps_identify(struct psmouse *psmouse, struct alps_data *priv)
1566{
1567 unsigned char e6[4], e7[4], ec[4];
1568
2e992cc0
KC		 1569 /*
1570 * First try "E6 report".
1571 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed.
1572 * The bits 0-2 of the first byte will be 1s if some buttons are
1573 * pressed.
1574 */
b5d6b851
KC		 1575 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
1576 PSMOUSE_CMD_SETSCALE11, e6))
1577 return -EIO;
2e992cc0 1578
b5d6b851
KC		 1579 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100))
1580 return -EINVAL;
2e992cc0
KC		 1581
1582 /*
b5d6b851
KC		 1583 * Now get the "E7" and "EC" reports. These will uniquely identify
1584 * most ALPS touchpads.
2e992cc0 1585 */
b5d6b851
KC		 1586 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
1587 PSMOUSE_CMD_SETSCALE21, e7) ||
1588 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
1589 PSMOUSE_CMD_RESET_WRAP, ec) ||
1590 alps_exit_command_mode(psmouse))
1591 return -EIO;
2e992cc0 1592
f673ceb1 1593 if (alps_match_table(psmouse, priv, e7, ec) == 0) {
1302bac3
KC		 1594 return 0;
1595 } else if (ec[0] == 0x88 && ec[1] == 0x08) {
1596 priv->proto_version = ALPS_PROTO_V3;
1597 alps_set_defaults(priv);
1598
1599 priv->hw_init = alps_hw_init_rushmore_v3;
1600 priv->decode_fields = alps_decode_rushmore;
1601 priv->x_bits = 16;
1602 priv->y_bits = 12;
1603
cd401204
KC		 1604 /* hack to make addr_command, nibble_command available */
1605 psmouse->private = priv;
1606
1607 if (alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_RUSHMORE))
1608 priv->flags &= ~ALPS_DUALPOINT;
1609
f673ceb1
KC		 1610 return 0;
1611 } else if (ec[0] == 0x88 && ec[1] == 0x07 &&
1612 ec[2] >= 0x90 && ec[2] <= 0x9d) {
1613 priv->proto_version = ALPS_PROTO_V3;
1614 alps_set_defaults(priv);
1615
b5d6b851 1616 return 0;
f673ceb1 1617 }
2e992cc0 1618
b5d6b851
KC		 1619 psmouse_info(psmouse,
1620 "Unknown ALPS touchpad: E7=%2.2x %2.2x %2.2x, EC=%2.2x %2.2x %2.2x\n",
1621 e7[0], e7[1], e7[2], ec[0], ec[1], ec[2]);
2e992cc0 1622
b5d6b851 1623 return -EINVAL;
2e992cc0
KC		 1624}
1625
1e0c5b12
DT		 1626static int alps_reconnect(struct psmouse *psmouse)
1627{
b5d6b851 1628 struct alps_data *priv = psmouse->private;
71bb21b6 1629
1e0c5b12
DT		 1630 psmouse_reset(psmouse);
1631
b5d6b851 1632 if (alps_identify(psmouse, priv) < 0)
1e0c5b12
DT		 1633 return -1;
1634
24af5cb9 1635 return priv->hw_init(psmouse);
1da177e4
LT		 1636}
1637
1638static void alps_disconnect(struct psmouse *psmouse)
1639{
1640 struct alps_data *priv = psmouse->private;
2e5b636b 1641
1da177e4 1642 psmouse_reset(psmouse);
1d9f2626 1643 del_timer_sync(&priv->timer);
2e5b636b 1644 input_unregister_device(priv->dev2);
1da177e4
LT		 1645 kfree(priv);
1646}
1647
24af5cb9
KC		 1648static void alps_set_abs_params_st(struct alps_data *priv,
1649 struct input_dev *dev1)
1650{
1651 input_set_abs_params(dev1, ABS_X, 0, 1023, 0, 0);
1652 input_set_abs_params(dev1, ABS_Y, 0, 767, 0, 0);
1653}
1654
1655static void alps_set_abs_params_mt(struct alps_data *priv,
1656 struct input_dev *dev1)
1657{
1658 set_bit(INPUT_PROP_SEMI_MT, dev1->propbit);
1659 input_mt_init_slots(dev1, 2, 0);
7a9f73e7
KC		 1660 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0);
1661 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0);
24af5cb9
KC		 1662
1663 set_bit(BTN_TOOL_DOUBLETAP, dev1->keybit);
1664 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit);
1665 set_bit(BTN_TOOL_QUADTAP, dev1->keybit);
1666
7a9f73e7
KC		 1667 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0);
1668 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0);
24af5cb9
KC		 1669}
1670
1da177e4
LT		 1671int alps_init(struct psmouse *psmouse)
1672{
1673 struct alps_data *priv;
2e5b636b 1674 struct input_dev *dev1 = psmouse->dev, *dev2;
1da177e4 1675
f42649e8 1676 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL);
2e5b636b
DT		 1677 dev2 = input_allocate_device();
1678 if (!priv || !dev2)
1da177e4 1679 goto init_fail;
2e5b636b
DT		 1680
1681 priv->dev2 = dev2;
1d9f2626
SK		 1682 setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse);
1683
1e0c5b12 1684 psmouse->private = priv;
1da177e4 1685
25bded7c
SF		 1686 psmouse_reset(psmouse);
1687
b5d6b851 1688 if (alps_identify(psmouse, priv) < 0)
71bb21b6
ML		 1689 goto init_fail;
1690
24af5cb9 1691 if (priv->hw_init(psmouse))
1da177e4
LT		 1692 goto init_fail;
1693
7105d2ea
DT		 1694 /*
1695 * Undo part of setup done for us by psmouse core since touchpad
1696 * is not a relative device.
1697 */
1698 __clear_bit(EV_REL, dev1->evbit);
1699 __clear_bit(REL_X, dev1->relbit);
1700 __clear_bit(REL_Y, dev1->relbit);
1701
1702 /*
1703 * Now set up our capabilities.
1704 */
7b19ada2
JS		 1705 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY);
1706 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH);
1707 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER);
71bb21b6
ML		 1708 dev1->keybit[BIT_WORD(BTN_LEFT)] |=
1709 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
1da177e4 1710
7b19ada2 1711 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS);
25bded7c 1712
24af5cb9 1713 priv->set_abs_params(priv, dev1);
2e5b636b 1714 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
1da177e4 1715
99df65e7 1716 if (priv->flags & ALPS_WHEEL) {
7b19ada2
JS		 1717 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL);
1718 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL);
1da177e4
LT		 1719 }
1720
99df65e7 1721 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
7b19ada2
JS		 1722 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD);
1723 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK);
1da177e4
LT		 1724 }
1725
99df65e7 1726 if (priv->flags & ALPS_FOUR_BUTTONS) {
71bb21b6
ML		 1727 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0);
1728 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1);
1729 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2);
1730 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3);
1731 } else {
1732 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE);
1733 }
1734
08ffce45 1735 snprintf(priv->phys, sizeof(priv->phys), "%s/input1", psmouse->ps2dev.serio->phys);
2e5b636b 1736 dev2->phys = priv->phys;
99df65e7
KC		 1737 dev2->name = (priv->flags & ALPS_DUALPOINT) ?
1738 "DualPoint Stick" : "PS/2 Mouse";
2e5b636b
DT		 1739 dev2->id.bustype = BUS_I8042;
1740 dev2->id.vendor = 0x0002;
1741 dev2->id.product = PSMOUSE_ALPS;
1742 dev2->id.version = 0x0000;
1db3a345 1743 dev2->dev.parent = &psmouse->ps2dev.serio->dev;
1da177e4 1744
7b19ada2 1745 dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
71bb21b6
ML		 1746 dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
1747 dev2->keybit[BIT_WORD(BTN_LEFT)] =
1748 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
1da177e4 1749
f42649e8
DT		 1750 if (input_register_device(priv->dev2))
1751 goto init_fail;
1da177e4
LT		 1752
1753 psmouse->protocol_handler = alps_process_byte;
f0d5c6f4 1754 psmouse->poll = alps_poll;
1da177e4
LT		 1755 psmouse->disconnect = alps_disconnect;
1756 psmouse->reconnect = alps_reconnect;
99df65e7 1757 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6;
1da177e4 1758
f0d5c6f4
DT		 1759 /* We are having trouble resyncing ALPS touchpads so disable it for now */
1760 psmouse->resync_time = 0;
1761
1da177e4
LT		 1762 return 0;
1763
1764init_fail:
f42649e8 1765 psmouse_reset(psmouse);
2e5b636b 1766 input_free_device(dev2);
1da177e4 1767 kfree(priv);
1e0c5b12 1768 psmouse->private = NULL;
1da177e4
LT		 1769 return -1;
1770}
1771
b7802c5c 1772int alps_detect(struct psmouse *psmouse, bool set_properties)
1da177e4 1773{
b5d6b851 1774 struct alps_data dummy;
1da177e4 1775
b5d6b851 1776 if (alps_identify(psmouse, &dummy) < 0)
1da177e4
LT		 1777 return -1;
1778
1779 if (set_properties) {
1780 psmouse->vendor = "ALPS";
b5d6b851 1781 psmouse->name = dummy.flags & ALPS_DUALPOINT ?
968ac842 1782 "DualPoint TouchPad" : "GlidePoint";
b5d6b851 1783 psmouse->model = dummy.proto_version << 8;
1da177e4
LT		 1784 }
1785 return 0;
1786}
1787
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