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Input: ALPS - fix trackstick button handling on V8 devices
[mirror_ubuntu-zesty-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>
073e570d 23#include <linux/dmi.h>
1da177e4
LT		 24
25#include "psmouse.h"
26#include "alps.h"
27
25bded7c
SF		 28/*
29 * Definitions for ALPS version 3 and 4 command mode protocol
30 */
31#define ALPS_CMD_NIBBLE_10 0x01f2
32
cd401204 33#define ALPS_REG_BASE_RUSHMORE 0xc2c0
dae928ec 34#define ALPS_REG_BASE_V7 0xc2c0
cd401204
KC		 35#define ALPS_REG_BASE_PINNACLE 0x0000
36
25bded7c
SF		 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
95f75e91
YT		 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
25bded7c 94
71bb21b6
ML		 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 */
1d9f2626
SK		 102#define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with
103 6-byte ALPS packet */
19556219 104#define ALPS_STICK_BITS 0x100 /* separate stick button bits */
3808843c 105#define ALPS_BUTTONPAD 0x200 /* device is a clickpad */
7ad8a106 106#define ALPS_DUALPOINT_WITH_PRESSURE 0x400 /* device can report trackpoint pressure */
1da177e4 107
e38de678 108static const struct alps_model_info alps_model_data[] = {
8326bb57
DT		 109 { { 0x32, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Toshiba Salellite Pro M10 */
110 { { 0x33, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V1, 0x88, 0xf8, 0 } }, /* UMAX-530T */
111 { { 0x53, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
112 { { 0x53, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
113 { { 0x60, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, /* HP ze1115 */
114 { { 0x63, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
115 { { 0x63, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
116 { { 0x63, 0x02, 0x28 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Fujitsu Siemens S6010 */
117 { { 0x63, 0x02, 0x3c }, 0x00, { ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL } }, /* Toshiba Satellite S2400-103 */
118 { { 0x63, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 } }, /* NEC Versa L320 */
119 { { 0x63, 0x02, 0x64 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
120 { { 0x63, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D800 */
121 { { 0x73, 0x00, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT } }, /* ThinkPad R61 8918-5QG */
122 { { 0x73, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
123 { { 0x73, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Ahtec Laptop */
626b9da0
DT		 124
125 /*
126 * XXX This entry is suspicious. First byte has zero lower nibble,
127 * which is what a normal mouse would report. Also, the value 0x0e
128 * isn't valid per PS/2 spec.
129 */
130 { { 0x20, 0x02, 0x0e }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } },
131
8326bb57
DT		 132 { { 0x22, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } },
133 { { 0x22, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D600 */
1d9f2626 134 /* Dell Latitude E5500, E6400, E6500, Precision M4400 */
8326bb57
DT		 135 { { 0x62, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf,
136 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } },
137 { { 0x73, 0x00, 0x14 }, 0x00, { ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT } }, /* Dell XT2 */
138 { { 0x73, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS } }, /* Dell Vostro 1400 */
139 { { 0x52, 0x01, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff,
140 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, /* Toshiba Tecra A11-11L */
141 { { 0x73, 0x02, 0x64 }, 0x8a, { ALPS_PROTO_V4, 0x8f, 0x8f, 0 } },
1da177e4
LT		 142};
143
3296f71c
DT		 144static const struct alps_protocol_info alps_v3_protocol_data = {
145 ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT
146};
147
148static const struct alps_protocol_info alps_v3_rushmore_data = {
149 ALPS_PROTO_V3_RUSHMORE, 0x8f, 0x8f, ALPS_DUALPOINT
150};
151
152static const struct alps_protocol_info alps_v5_protocol_data = {
153 ALPS_PROTO_V5, 0xc8, 0xd8, 0
154};
155
156static const struct alps_protocol_info alps_v7_protocol_data = {
157 ALPS_PROTO_V7, 0x48, 0x48, ALPS_DUALPOINT
158};
159
3db5b9f7
MO		 160static const struct alps_protocol_info alps_v8_protocol_data = {
161 ALPS_PROTO_V8, 0x18, 0x18, 0
162};
163
19556219
HG		 164/*
165 * Some v2 models report the stick buttons in separate bits
166 */
167static const struct dmi_system_id alps_dmi_has_separate_stick_buttons[] = {
168#if defined(CONFIG_DMI) && defined(CONFIG_X86)
169 {
170 /* Extrapolated from other entries */
171 .matches = {
172 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
173 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D420"),
174 },
175 },
176 {
177 /* Reported-by: Hans de Bruin <jmdebruin@xmsnet.nl> */
178 .matches = {
179 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
180 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D430"),
181 },
182 },
183 {
184 /* Reported-by: Hans de Goede <hdegoede@redhat.com> */
185 .matches = {
186 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
187 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D620"),
188 },
189 },
190 {
191 /* Extrapolated from other entries */
192 .matches = {
193 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
194 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D630"),
195 },
196 },
197#endif
198 { }
199};
200
24af5cb9
KC		 201static void alps_set_abs_params_st(struct alps_data *priv,
202 struct input_dev *dev1);
688ea364
HG		 203static void alps_set_abs_params_semi_mt(struct alps_data *priv,
204 struct input_dev *dev1);
8eccd393
MO		 205static void alps_set_abs_params_v7(struct alps_data *priv,
206 struct input_dev *dev1);
3db5b9f7
MO		 207static void alps_set_abs_params_ss4_v2(struct alps_data *priv,
208 struct input_dev *dev1);
24af5cb9 209
d4b347b2 210/* Packet formats are described in Documentation/input/alps.txt */
1da177e4 211
99df65e7 212static bool alps_is_valid_first_byte(struct alps_data *priv,
1d9f2626
SK		 213 unsigned char data)
214{
99df65e7 215 return (data & priv->mask0) == priv->byte0;
1d9f2626
SK		 216}
217
04aae283 218static void alps_report_buttons(struct input_dev *dev1, struct input_dev *dev2,
1d9f2626
SK		 219 int left, int right, int middle)
220{
c91ed059
MB		 221 struct input_dev *dev;
222
223 /*
224 * If shared button has already been reported on the
225 * other device (dev2) then this event should be also
226 * sent through that device.
227 */
04aae283 228 dev = (dev2 && test_bit(BTN_LEFT, dev2->key)) ? dev2 : dev1;
c91ed059
MB		 229 input_report_key(dev, BTN_LEFT, left);
230
04aae283 231 dev = (dev2 && test_bit(BTN_RIGHT, dev2->key)) ? dev2 : dev1;
c91ed059
MB		 232 input_report_key(dev, BTN_RIGHT, right);
233
04aae283 234 dev = (dev2 && test_bit(BTN_MIDDLE, dev2->key)) ? dev2 : dev1;
c91ed059
MB		 235 input_report_key(dev, BTN_MIDDLE, middle);
236
237 /*
238 * Sync the _other_ device now, we'll do the first
239 * device later once we report the rest of the events.
240 */
04aae283
PR		 241 if (dev2)
242 input_sync(dev2);
1d9f2626
SK		 243}
244
25bded7c 245static void alps_process_packet_v1_v2(struct psmouse *psmouse)
1da177e4
LT		 246{
247 struct alps_data *priv = psmouse->private;
248 unsigned char *packet = psmouse->packet;
2e5b636b
DT		 249 struct input_dev *dev = psmouse->dev;
250 struct input_dev *dev2 = priv->dev2;
1da177e4 251 int x, y, z, ges, fin, left, right, middle;
c30b4c10 252 int back = 0, forward = 0;
1da177e4 253
99df65e7 254 if (priv->proto_version == ALPS_PROTO_V1) {
d2f4012f
YM		 255 left = packet[2] & 0x10;
256 right = packet[2] & 0x08;
1da177e4
LT		 257 middle = 0;
258 x = packet[1] | ((packet[0] & 0x07) << 7);
259 y = packet[4] | ((packet[3] & 0x07) << 7);
260 z = packet[5];
261 } else {
262 left = packet[3] & 1;
263 right = packet[3] & 2;
264 middle = packet[3] & 4;
265 x = packet[1] | ((packet[2] & 0x78) << (7 - 3));
266 y = packet[4] | ((packet[3] & 0x70) << (7 - 4));
267 z = packet[5];
268 }
269
99df65e7 270 if (priv->flags & ALPS_FW_BK_1) {
3c00bb96
LK		 271 back = packet[0] & 0x10;
272 forward = packet[2] & 4;
c30b4c10
ICR		 273 }
274
99df65e7 275 if (priv->flags & ALPS_FW_BK_2) {
c30b4c10
ICR		 276 back = packet[3] & 4;
277 forward = packet[2] & 4;
278 if ((middle = forward && back))
279 forward = back = 0;
280 }
281
1da177e4
LT		 282 ges = packet[2] & 1;
283 fin = packet[2] & 2;
284
99df65e7 285 if ((priv->flags & ALPS_DUALPOINT) && z == 127) {
1da177e4
LT		 286 input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x));
287 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y));
d7ed5d88 288
04aae283 289 alps_report_buttons(dev2, dev, left, right, middle);
d7ed5d88 290
1da177e4
LT		 291 input_sync(dev2);
292 return;
293 }
294
19556219
HG		 295 /* Some models have separate stick button bits */
296 if (priv->flags & ALPS_STICK_BITS) {
92bac83d
HG		 297 left |= packet[0] & 1;
298 right |= packet[0] & 2;
299 middle |= packet[0] & 4;
300 }
301
04aae283 302 alps_report_buttons(dev, dev2, left, right, middle);
d7ed5d88 303
1da177e4 304 /* Convert hardware tap to a reasonable Z value */
71bb21b6
ML		 305 if (ges && !fin)
306 z = 40;
1da177e4
LT		 307
308 /*
309 * A "tap and drag" operation is reported by the hardware as a transition
310 * from (!fin && ges) to (fin && ges). This should be translated to the
311 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually.
312 */
313 if (ges && fin && !priv->prev_fin) {
314 input_report_abs(dev, ABS_X, x);
315 input_report_abs(dev, ABS_Y, y);
316 input_report_abs(dev, ABS_PRESSURE, 0);
317 input_report_key(dev, BTN_TOOL_FINGER, 0);
318 input_sync(dev);
319 }
320 priv->prev_fin = fin;
321
71bb21b6
ML		 322 if (z > 30)
323 input_report_key(dev, BTN_TOUCH, 1);
324 if (z < 25)
325 input_report_key(dev, BTN_TOUCH, 0);
1da177e4
LT		 326
327 if (z > 0) {
328 input_report_abs(dev, ABS_X, x);
329 input_report_abs(dev, ABS_Y, y);
330 }
331
332 input_report_abs(dev, ABS_PRESSURE, z);
333 input_report_key(dev, BTN_TOOL_FINGER, z > 0);
334
99df65e7 335 if (priv->flags & ALPS_WHEEL)
e6c047b9 336 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07));
1da177e4 337
99df65e7 338 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
c30b4c10
ICR		 339 input_report_key(dev, BTN_FORWARD, forward);
340 input_report_key(dev, BTN_BACK, back);
1da177e4
LT		 341 }
342
99df65e7 343 if (priv->flags & ALPS_FOUR_BUTTONS) {
71bb21b6
ML		 344 input_report_key(dev, BTN_0, packet[2] & 4);
345 input_report_key(dev, BTN_1, packet[0] & 0x10);
346 input_report_key(dev, BTN_2, packet[3] & 4);
347 input_report_key(dev, BTN_3, packet[0] & 0x20);
348 }
349
1da177e4
LT		 350 input_sync(dev);
351}
352
036e6c7b
HG		 353static void alps_get_bitmap_points(unsigned int map,
354 struct alps_bitmap_point *low,
355 struct alps_bitmap_point *high,
356 int *fingers)
357{
358 struct alps_bitmap_point *point;
359 int i, bit, prev_bit = 0;
360
361 point = low;
362 for (i = 0; map != 0; i++, map >>= 1) {
363 bit = map & 1;
364 if (bit) {
365 if (!prev_bit) {
366 point->start_bit = i;
105affbf 367 point->num_bits = 0;
036e6c7b
HG		 368 (*fingers)++;
369 }
370 point->num_bits++;
371 } else {
372 if (prev_bit)
373 point = high;
036e6c7b
HG		 374 }
375 prev_bit = bit;
376 }
377}
378
01ce661f 379/*
dccf1dd8 380 * Process bitmap data from semi-mt protocols. Returns the number of
01ce661f
SF		 381 * fingers detected. A return value of 0 means at least one of the
382 * bitmaps was empty.
383 *
384 * The bitmaps don't have enough data to track fingers, so this function
385 * only generates points representing a bounding box of all contacts.
02d04254 386 * These points are returned in fields->mt when the return value
01ce661f
SF		 387 * is greater than 0.
388 */
7a9f73e7 389static int alps_process_bitmap(struct alps_data *priv,
02d04254 390 struct alps_fields *fields)
01ce661f 391{
4dd26573 392 int i, fingers_x = 0, fingers_y = 0, fingers, closest;
01ce661f
SF		 393 struct alps_bitmap_point x_low = {0,}, x_high = {0,};
394 struct alps_bitmap_point y_low = {0,}, y_high = {0,};
4dd26573 395 struct input_mt_pos corner[4];
01ce661f 396
02d04254 397 if (!fields->x_map || !fields->y_map)
01ce661f
SF		 398 return 0;
399
02d04254
HG		 400 alps_get_bitmap_points(fields->x_map, &x_low, &x_high, &fingers_x);
401 alps_get_bitmap_points(fields->y_map, &y_low, &y_high, &fingers_y);
01ce661f
SF		 402
403 /*
404 * Fingers can overlap, so we use the maximum count of fingers
405 * on either axis as the finger count.
406 */
407 fingers = max(fingers_x, fingers_y);
408
409 /*
20bea68b
HG		 410 * If an axis reports only a single contact, we have overlapping or
411 * adjacent fingers. Divide the single contact between the two points.
01ce661f 412 */
20bea68b 413 if (fingers_x == 1) {
28835f45 414 i = (x_low.num_bits - 1) / 2;
20bea68b
HG		 415 x_low.num_bits = x_low.num_bits - i;
416 x_high.start_bit = x_low.start_bit + i;
417 x_high.num_bits = max(i, 1);
418 }
419 if (fingers_y == 1) {
28835f45 420 i = (y_low.num_bits - 1) / 2;
20bea68b
HG		 421 y_low.num_bits = y_low.num_bits - i;
422 y_high.start_bit = y_low.start_bit + i;
423 y_high.num_bits = max(i, 1);
01ce661f
SF		 424 }
425
4dd26573
HG		 426 /* top-left corner */
427 corner[0].x =
02d04254
HG		 428 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) /
429 (2 * (priv->x_bits - 1));
4dd26573 430 corner[0].y =
02d04254
HG		 431 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) /
432 (2 * (priv->y_bits - 1));
01ce661f 433
4dd26573
HG		 434 /* top-right corner */
435 corner[1].x =
02d04254
HG		 436 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) /
437 (2 * (priv->x_bits - 1));
4dd26573
HG		 438 corner[1].y =
439 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) /
440 (2 * (priv->y_bits - 1));
441
442 /* bottom-right corner */
443 corner[2].x =
444 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) /
445 (2 * (priv->x_bits - 1));
446 corner[2].y =
447 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) /
448 (2 * (priv->y_bits - 1));
449
450 /* bottom-left corner */
451 corner[3].x =
452 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) /
453 (2 * (priv->x_bits - 1));
454 corner[3].y =
02d04254
HG		 455 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) /
456 (2 * (priv->y_bits - 1));
01ce661f 457
dccf1dd8
HG		 458 /* x-bitmap order is reversed on v5 touchpads */
459 if (priv->proto_version == ALPS_PROTO_V5) {
460 for (i = 0; i < 4; i++)
461 corner[i].x = priv->x_max - corner[i].x;
462 }
463
464 /* y-bitmap order is reversed on v3 and v4 touchpads */
465 if (priv->proto_version == ALPS_PROTO_V3 ||
466 priv->proto_version == ALPS_PROTO_V4) {
4dd26573
HG		 467 for (i = 0; i < 4; i++)
468 corner[i].y = priv->y_max - corner[i].y;
469 }
470
471 /*
472 * We only select a corner for the second touch once per 2 finger
473 * touch sequence to avoid the chosen corner (and thus the coordinates)
474 * jumping around when the first touch is in the middle.
475 */
476 if (priv->second_touch == -1) {
477 /* Find corner closest to our st coordinates */
478 closest = 0x7fffffff;
479 for (i = 0; i < 4; i++) {
480 int dx = fields->st.x - corner[i].x;
481 int dy = fields->st.y - corner[i].y;
482 int distance = dx * dx + dy * dy;
483
484 if (distance < closest) {
485 priv->second_touch = i;
486 closest = distance;
487 }
488 }
489 /* And select the opposite corner to use for the 2nd touch */
490 priv->second_touch = (priv->second_touch + 2) % 4;
40e8f53b
HG		 491 }
492
4dd26573
HG		 493 fields->mt[0] = fields->st;
494 fields->mt[1] = corner[priv->second_touch];
495
01ce661f
SF		 496 return fingers;
497}
498
cdf333ef 499static void alps_set_slot(struct input_dev *dev, int slot, int x, int y)
01ce661f
SF		 500{
501 input_mt_slot(dev, slot);
cdf333ef
HG		 502 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
503 input_report_abs(dev, ABS_MT_POSITION_X, x);
504 input_report_abs(dev, ABS_MT_POSITION_Y, y);
01ce661f
SF		 505}
506
cdf333ef 507static void alps_report_mt_data(struct psmouse *psmouse, int n)
01ce661f 508{
02d04254
HG		 509 struct alps_data *priv = psmouse->private;
510 struct input_dev *dev = psmouse->dev;
511 struct alps_fields *f = &priv->f;
cdf333ef
HG		 512 int i, slot[MAX_TOUCHES];
513
448c7f38 514 input_mt_assign_slots(dev, slot, f->mt, n, 0);
cdf333ef
HG		 515 for (i = 0; i < n; i++)
516 alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y);
02d04254 517
cdf333ef 518 input_mt_sync_frame(dev);
01ce661f
SF		 519}
520
68c21870
HG		 521static void alps_report_semi_mt_data(struct psmouse *psmouse, int fingers)
522{
523 struct alps_data *priv = psmouse->private;
524 struct input_dev *dev = psmouse->dev;
525 struct alps_fields *f = &priv->f;
526
527 /* Use st data when we don't have mt data */
528 if (fingers < 2) {
529 f->mt[0].x = f->st.x;
530 f->mt[0].y = f->st.y;
531 fingers = f->pressure > 0 ? 1 : 0;
4dd26573 532 priv->second_touch = -1;
68c21870
HG		 533 }
534
1662c033
HG		 535 if (fingers >= 1)
536 alps_set_slot(dev, 0, f->mt[0].x, f->mt[0].y);
537 if (fingers >= 2)
538 alps_set_slot(dev, 1, f->mt[1].x, f->mt[1].y);
539 input_mt_sync_frame(dev);
68c21870
HG		 540
541 input_mt_report_finger_count(dev, fingers);
542
543 input_report_key(dev, BTN_LEFT, f->left);
544 input_report_key(dev, BTN_RIGHT, f->right);
545 input_report_key(dev, BTN_MIDDLE, f->middle);
546
547 input_report_abs(dev, ABS_PRESSURE, f->pressure);
548
549 input_sync(dev);
550}
551
25bded7c
SF		 552static void alps_process_trackstick_packet_v3(struct psmouse *psmouse)
553{
554 struct alps_data *priv = psmouse->private;
555 unsigned char *packet = psmouse->packet;
556 struct input_dev *dev = priv->dev2;
557 int x, y, z, left, right, middle;
558
34412ba2
PR		 559 /* It should be a DualPoint when received trackstick packet */
560 if (!(priv->flags & ALPS_DUALPOINT)) {
561 psmouse_warn(psmouse,
562 "Rejected trackstick packet from non DualPoint device");
563 return;
564 }
565
25bded7c
SF		 566 /* Sanity check packet */
567 if (!(packet[0] & 0x40)) {
568 psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n");
569 return;
570 }
571
572 /*
573 * There's a special packet that seems to indicate the end
574 * of a stream of trackstick data. Filter these out.
575 */
576 if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f)
577 return;
578
579 x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f));
580 y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f));
581 z = (packet[4] & 0x7c) >> 2;
582
583 /*
584 * The x and y values tend to be quite large, and when used
585 * alone the trackstick is difficult to use. Scale them down
586 * to compensate.
587 */
588 x /= 8;
589 y /= 8;
590
591 input_report_rel(dev, REL_X, x);
592 input_report_rel(dev, REL_Y, -y);
593
594 /*
595 * Most ALPS models report the trackstick buttons in the touchpad
596 * packets, but a few report them here. No reliable way has been
597 * found to differentiate between the models upfront, so we enable
598 * the quirk in response to seeing a button press in the trackstick
599 * packet.
600 */
601 left = packet[3] & 0x01;
602 right = packet[3] & 0x02;
603 middle = packet[3] & 0x04;
604
605 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) &&
606 (left || right || middle))
607 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS;
608
609 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) {
610 input_report_key(dev, BTN_LEFT, left);
611 input_report_key(dev, BTN_RIGHT, right);
612 input_report_key(dev, BTN_MIDDLE, middle);
613 }
614
615 input_sync(dev);
616 return;
617}
618
f85e5001
KC		 619static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p)
620{
621 f->left = !!(p[3] & 0x01);
622 f->right = !!(p[3] & 0x02);
623 f->middle = !!(p[3] & 0x04);
624
625 f->ts_left = !!(p[3] & 0x10);
626 f->ts_right = !!(p[3] & 0x20);
627 f->ts_middle = !!(p[3] & 0x40);
628}
629
38c11eaa 630static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p,
ee65d4b3 631 struct psmouse *psmouse)
f85e5001
KC		 632{
633 f->first_mp = !!(p[4] & 0x40);
634 f->is_mp = !!(p[0] & 0x40);
635
a839cd57
HG		 636 if (f->is_mp) {
637 f->fingers = (p[5] & 0x3) + 1;
638 f->x_map = ((p[4] & 0x7e) << 8) |
639 ((p[1] & 0x7f) << 2) |
640 ((p[0] & 0x30) >> 4);
641 f->y_map = ((p[3] & 0x70) << 4) |
642 ((p[2] & 0x7f) << 1) |
643 (p[4] & 0x01);
644 } else {
645 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) |
646 ((p[0] & 0x30) >> 4);
647 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f);
648 f->pressure = p[5] & 0x7f;
f85e5001 649
a839cd57
HG		 650 alps_decode_buttons_v3(f, p);
651 }
38c11eaa
HG		 652
653 return 0;
f85e5001
KC		 654}
655
38c11eaa 656static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p,
ee65d4b3 657 struct psmouse *psmouse)
1302bac3 658{
aab9cf7b 659 f->first_mp = !!(p[4] & 0x40);
f105e34a 660 f->is_mp = !!(p[5] & 0x40);
aab9cf7b 661
a839cd57
HG		 662 if (f->is_mp) {
663 f->fingers = max((p[5] & 0x3), ((p[5] >> 2) & 0x3)) + 1;
664 f->x_map = ((p[5] & 0x10) << 11) |
665 ((p[4] & 0x7e) << 8) |
666 ((p[1] & 0x7f) << 2) |
667 ((p[0] & 0x30) >> 4);
668 f->y_map = ((p[5] & 0x20) << 6) |
669 ((p[3] & 0x70) << 4) |
670 ((p[2] & 0x7f) << 1) |
671 (p[4] & 0x01);
672 } else {
673 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) |
674 ((p[0] & 0x30) >> 4);
675 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f);
676 f->pressure = p[5] & 0x7f;
677
678 alps_decode_buttons_v3(f, p);
679 }
38c11eaa
HG		 680
681 return 0;
1302bac3
KC		 682}
683
38c11eaa 684static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p,
ee65d4b3 685 struct psmouse *psmouse)
75af9e56 686{
ee65d4b3
YT		 687 u64 palm_data = 0;
688 struct alps_data *priv = psmouse->private;
689
75af9e56
DT		 690 f->first_mp = !!(p[0] & 0x02);
691 f->is_mp = !!(p[0] & 0x20);
692
ee65d4b3 693 if (!f->is_mp) {
02d04254
HG		 694 f->st.x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7));
695 f->st.y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3));
696 f->pressure = (p[0] & 4) ? 0 : p[5] & 0x7f;
ee65d4b3
YT		 697 alps_decode_buttons_v3(f, p);
698 } else {
699 f->fingers = ((p[0] & 0x6) >> 1 |
75af9e56 700 (p[0] & 0x10) >> 2);
75af9e56 701
ee65d4b3
YT		 702 palm_data = (p[1] & 0x7f) |
703 ((p[2] & 0x7f) << 7) |
704 ((p[4] & 0x7f) << 14) |
705 ((p[5] & 0x7f) << 21) |
706 ((p[3] & 0x07) << 28) |
707 (((u64)p[3] & 0x70) << 27) |
708 (((u64)p[0] & 0x01) << 34);
709
710 /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */
711 f->y_map = palm_data & (BIT(priv->y_bits) - 1);
712
713 /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */
714 f->x_map = (palm_data >> priv->y_bits) &
715 (BIT(priv->x_bits) - 1);
716 }
38c11eaa
HG		 717
718 return 0;
75af9e56
DT		 719}
720
ee65d4b3 721static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse)
25bded7c
SF		 722{
723 struct alps_data *priv = psmouse->private;
724 unsigned char *packet = psmouse->packet;
25bded7c 725 struct input_dev *dev2 = priv->dev2;
02d04254
HG		 726 struct alps_fields *f = &priv->f;
727 int fingers = 0;
728
729 memset(f, 0, sizeof(*f));
f85e5001 730
02d04254 731 priv->decode_fields(f, packet, psmouse);
25bded7c
SF		 732
733 /*
01ce661f
SF		 734 * There's no single feature of touchpad position and bitmap packets
735 * that can be used to distinguish between them. We rely on the fact
736 * that a bitmap packet should always follow a position packet with
737 * bit 6 of packet[4] set.
25bded7c
SF		 738 */
739 if (priv->multi_packet) {
25bded7c
SF		 740 /*
741 * Sometimes a position packet will indicate a multi-packet
742 * sequence, but then what follows is another position
743 * packet. Check for this, and when it happens process the
744 * position packet as usual.
745 */
02d04254
HG		 746 if (f->is_mp) {
747 fingers = f->fingers;
44b77f38
HG		 748 /*
749 * Bitmap processing uses position packet's coordinate
750 * data, so we need to do decode it first.
751 */
752 priv->decode_fields(f, priv->multi_data, psmouse);
dccf1dd8
HG		 753 if (alps_process_bitmap(priv, f) == 0)
754 fingers = 0; /* Use st data */
01ce661f
SF		 755 } else {
756 priv->multi_packet = 0;
25bded7c
SF		 757 }
758 }
759
01ce661f
SF		 760 /*
761 * Bit 6 of byte 0 is not usually set in position packets. The only
762 * times it seems to be set is in situations where the data is
763 * suspect anyway, e.g. a palm resting flat on the touchpad. Given
764 * this combined with the fact that this bit is useful for filtering
765 * out misidentified bitmap packets, we reject anything with this
766 * bit set.
767 */
02d04254 768 if (f->is_mp)
01ce661f
SF		 769 return;
770
02d04254 771 if (!priv->multi_packet && f->first_mp) {
25bded7c 772 priv->multi_packet = 1;
01ce661f
SF		 773 memcpy(priv->multi_data, packet, sizeof(priv->multi_data));
774 return;
775 }
776
777 priv->multi_packet = 0;
25bded7c 778
25bded7c
SF		 779 /*
780 * Sometimes the hardware sends a single packet with z = 0
781 * in the middle of a stream. Real releases generate packets
782 * with x, y, and z all zero, so these seem to be flukes.
783 * Ignore them.
784 */
02d04254 785 if (f->st.x && f->st.y && !f->pressure)
25bded7c
SF		 786 return;
787
68c21870 788 alps_report_semi_mt_data(psmouse, fingers);
25bded7c 789
34412ba2
PR		 790 if ((priv->flags & ALPS_DUALPOINT) &&
791 !(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) {
02d04254
HG		 792 input_report_key(dev2, BTN_LEFT, f->ts_left);
793 input_report_key(dev2, BTN_RIGHT, f->ts_right);
794 input_report_key(dev2, BTN_MIDDLE, f->ts_middle);
25bded7c
SF		 795 input_sync(dev2);
796 }
797}
798
799static void alps_process_packet_v3(struct psmouse *psmouse)
800{
801 unsigned char *packet = psmouse->packet;
802
803 /*
804 * v3 protocol packets come in three types, two representing
805 * touchpad data and one representing trackstick data.
806 * Trackstick packets seem to be distinguished by always
807 * having 0x3f in the last byte. This value has never been
808 * observed in the last byte of either of the other types
809 * of packets.
810 */
811 if (packet[5] == 0x3f) {
812 alps_process_trackstick_packet_v3(psmouse);
813 return;
814 }
815
ee65d4b3 816 alps_process_touchpad_packet_v3_v5(psmouse);
25bded7c
SF		 817}
818
95f75e91
YT		 819static void alps_process_packet_v6(struct psmouse *psmouse)
820{
821 struct alps_data *priv = psmouse->private;
822 unsigned char *packet = psmouse->packet;
823 struct input_dev *dev = psmouse->dev;
824 struct input_dev *dev2 = priv->dev2;
825 int x, y, z, left, right, middle;
826
827 /*
828 * We can use Byte5 to distinguish if the packet is from Touchpad
829 * or Trackpoint.
830 * Touchpad: 0 - 0x7E
831 * Trackpoint: 0x7F
832 */
833 if (packet[5] == 0x7F) {
834 /* It should be a DualPoint when received Trackpoint packet */
34412ba2
PR		 835 if (!(priv->flags & ALPS_DUALPOINT)) {
836 psmouse_warn(psmouse,
837 "Rejected trackstick packet from non DualPoint device");
95f75e91 838 return;
34412ba2 839 }
95f75e91
YT		 840
841 /* Trackpoint packet */
842 x = packet[1] | ((packet[3] & 0x20) << 2);
843 y = packet[2] | ((packet[3] & 0x40) << 1);
844 z = packet[4];
845 left = packet[3] & 0x01;
846 right = packet[3] & 0x02;
847 middle = packet[3] & 0x04;
848
849 /* To prevent the cursor jump when finger lifted */
850 if (x == 0x7F && y == 0x7F && z == 0x7F)
851 x = y = z = 0;
852
853 /* Divide 4 since trackpoint's speed is too fast */
854 input_report_rel(dev2, REL_X, (char)x / 4);
855 input_report_rel(dev2, REL_Y, -((char)y / 4));
856
857 input_report_key(dev2, BTN_LEFT, left);
858 input_report_key(dev2, BTN_RIGHT, right);
859 input_report_key(dev2, BTN_MIDDLE, middle);
860
861 input_sync(dev2);
862 return;
863 }
864
865 /* Touchpad packet */
866 x = packet[1] | ((packet[3] & 0x78) << 4);
867 y = packet[2] | ((packet[4] & 0x78) << 4);
868 z = packet[5];
869 left = packet[3] & 0x01;
870 right = packet[3] & 0x02;
871
872 if (z > 30)
873 input_report_key(dev, BTN_TOUCH, 1);
874 if (z < 25)
875 input_report_key(dev, BTN_TOUCH, 0);
876
877 if (z > 0) {
878 input_report_abs(dev, ABS_X, x);
879 input_report_abs(dev, ABS_Y, y);
880 }
881
882 input_report_abs(dev, ABS_PRESSURE, z);
883 input_report_key(dev, BTN_TOOL_FINGER, z > 0);
884
885 /* v6 touchpad does not have middle button */
886 input_report_key(dev, BTN_LEFT, left);
887 input_report_key(dev, BTN_RIGHT, right);
888
889 input_sync(dev);
890}
891
25bded7c
SF		 892static void alps_process_packet_v4(struct psmouse *psmouse)
893{
3b7e09fa 894 struct alps_data *priv = psmouse->private;
25bded7c 895 unsigned char *packet = psmouse->packet;
02d04254 896 struct alps_fields *f = &priv->f;
68c21870 897 int offset;
3b7e09fa
GP		 898
899 /*
900 * v4 has a 6-byte encoding for bitmap data, but this data is
901 * broken up between 3 normal packets. Use priv->multi_packet to
902 * track our position in the bitmap packet.
903 */
904 if (packet[6] & 0x40) {
905 /* sync, reset position */
906 priv->multi_packet = 0;
907 }
908
909 if (WARN_ON_ONCE(priv->multi_packet > 2))
910 return;
911
912 offset = 2 * priv->multi_packet;
913 priv->multi_data[offset] = packet[6];
914 priv->multi_data[offset + 1] = packet[7];
915
44b77f38
HG		 916 f->left = !!(packet[4] & 0x01);
917 f->right = !!(packet[4] & 0x02);
918
919 f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) |
920 ((packet[0] & 0x30) >> 4);
921 f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f);
922 f->pressure = packet[5] & 0x7f;
923
3b7e09fa
GP		 924 if (++priv->multi_packet > 2) {
925 priv->multi_packet = 0;
926
02d04254 927 f->x_map = ((priv->multi_data[2] & 0x1f) << 10) |
3b7e09fa
GP		 928 ((priv->multi_data[3] & 0x60) << 3) |
929 ((priv->multi_data[0] & 0x3f) << 2) |
930 ((priv->multi_data[1] & 0x60) >> 5);
02d04254 931 f->y_map = ((priv->multi_data[5] & 0x01) << 10) |
3b7e09fa
GP		 932 ((priv->multi_data[3] & 0x1f) << 5) |
933 (priv->multi_data[1] & 0x1f);
934
02d04254 935 f->fingers = alps_process_bitmap(priv, f);
3b7e09fa 936 }
25bded7c 937
68c21870 938 alps_report_semi_mt_data(psmouse, f->fingers);
25bded7c
SF		 939}
940
3808843c
YT		 941static bool alps_is_valid_package_v7(struct psmouse *psmouse)
942{
943 switch (psmouse->pktcnt) {
944 case 3:
945 return (psmouse->packet[2] & 0x40) == 0x40;
946 case 4:
947 return (psmouse->packet[3] & 0x48) == 0x48;
948 case 6:
949 return (psmouse->packet[5] & 0x40) == 0x00;
950 }
951 return true;
952}
953
954static unsigned char alps_get_packet_id_v7(char *byte)
955{
956 unsigned char packet_id;
957
958 if (byte[4] & 0x40)
959 packet_id = V7_PACKET_ID_TWO;
960 else if (byte[4] & 0x01)
961 packet_id = V7_PACKET_ID_MULTI;
962 else if ((byte[0] & 0x10) && !(byte[4] & 0x43))
963 packet_id = V7_PACKET_ID_NEW;
964 else if (byte[1] == 0x00 && byte[4] == 0x00)
965 packet_id = V7_PACKET_ID_IDLE;
966 else
967 packet_id = V7_PACKET_ID_UNKNOWN;
968
969 return packet_id;
970}
971
972static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt,
973 unsigned char *pkt,
974 unsigned char pkt_id)
975{
976 mt[0].x = ((pkt[2] & 0x80) << 4);
977 mt[0].x |= ((pkt[2] & 0x3F) << 5);
978 mt[0].x |= ((pkt[3] & 0x30) >> 1);
979 mt[0].x |= (pkt[3] & 0x07);
980 mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07);
981
982 mt[1].x = ((pkt[3] & 0x80) << 4);
983 mt[1].x |= ((pkt[4] & 0x80) << 3);
984 mt[1].x |= ((pkt[4] & 0x3F) << 4);
985 mt[1].y = ((pkt[5] & 0x80) << 3);
986 mt[1].y |= ((pkt[5] & 0x3F) << 4);
987
988 switch (pkt_id) {
989 case V7_PACKET_ID_TWO:
990 mt[1].x &= ~0x000F;
991 mt[1].y |= 0x000F;
72eceab7
HG		 992 /* Detect false-postive touches where x & y report max value */
993 if (mt[1].y == 0x7ff && mt[1].x == 0xff0) {
994 mt[1].x = 0;
995 /* y gets set to 0 at the end of this function */
996 }
3808843c
YT		 997 break;
998
999 case V7_PACKET_ID_MULTI:
1000 mt[1].x &= ~0x003F;
1001 mt[1].y &= ~0x0020;
1002 mt[1].y |= ((pkt[4] & 0x02) << 4);
1003 mt[1].y |= 0x001F;
1004 break;
1005
1006 case V7_PACKET_ID_NEW:
1007 mt[1].x &= ~0x003F;
1008 mt[1].x |= (pkt[0] & 0x20);
1009 mt[1].y |= 0x000F;
1010 break;
1011 }
1012
1013 mt[0].y = 0x7FF - mt[0].y;
1014 mt[1].y = 0x7FF - mt[1].y;
1015}
1016
1017static int alps_get_mt_count(struct input_mt_pos *mt)
1018{
7091c443 1019 int i, fingers = 0;
3808843c 1020
7091c443
HG		 1021 for (i = 0; i < MAX_TOUCHES; i++) {
1022 if (mt[i].x != 0 || mt[i].y != 0)
1023 fingers++;
1024 }
3808843c 1025
7091c443 1026 return fingers;
3808843c
YT		 1027}
1028
1029static int alps_decode_packet_v7(struct alps_fields *f,
1030 unsigned char *p,
1031 struct psmouse *psmouse)
1032{
d27eb793 1033 struct alps_data *priv = psmouse->private;
3808843c
YT		 1034 unsigned char pkt_id;
1035
1036 pkt_id = alps_get_packet_id_v7(p);
1037 if (pkt_id == V7_PACKET_ID_IDLE)
1038 return 0;
1039 if (pkt_id == V7_PACKET_ID_UNKNOWN)
1040 return -1;
8b238115
HG		 1041 /*
1042 * NEW packets are send to indicate a discontinuity in the finger
1043 * coordinate reporting. Specifically a finger may have moved from
1044 * slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for
1045 * us.
1046 *
1047 * NEW packets have 3 problems:
1048 * 1) They do not contain middle / right button info (on non clickpads)
1049 * this can be worked around by preserving the old button state
1050 * 2) They do not contain an accurate fingercount, and they are
1051 * typically send when the number of fingers changes. We cannot use
1052 * the old finger count as that may mismatch with the amount of
1053 * touch coordinates we've available in the NEW packet
1054 * 3) Their x data for the second touch is inaccurate leading to
1055 * a possible jump of the x coordinate by 16 units when the first
1056 * non NEW packet comes in
1057 * Since problems 2 & 3 cannot be worked around, just ignore them.
1058 */
1059 if (pkt_id == V7_PACKET_ID_NEW)
1060 return 1;
3808843c
YT		 1061
1062 alps_get_finger_coordinate_v7(f->mt, p, pkt_id);
1063
3808843c
YT		 1064 if (pkt_id == V7_PACKET_ID_TWO)
1065 f->fingers = alps_get_mt_count(f->mt);
8b238115 1066 else /* pkt_id == V7_PACKET_ID_MULTI */
3808843c
YT		 1067 f->fingers = 3 + (p[5] & 0x03);
1068
d27eb793
HG		 1069 f->left = (p[0] & 0x80) >> 7;
1070 if (priv->flags & ALPS_BUTTONPAD) {
1071 if (p[0] & 0x20)
1072 f->fingers++;
1073 if (p[0] & 0x10)
1074 f->fingers++;
1075 } else {
1076 f->right = (p[0] & 0x20) >> 5;
1077 f->middle = (p[0] & 0x10) >> 4;
1078 }
1079
7091c443
HG		 1080 /* Sometimes a single touch is reported in mt[1] rather then mt[0] */
1081 if (f->fingers == 1 && f->mt[0].x == 0 && f->mt[0].y == 0) {
1082 f->mt[0].x = f->mt[1].x;
1083 f->mt[0].y = f->mt[1].y;
1084 f->mt[1].x = 0;
1085 f->mt[1].y = 0;
1086 }
1087
3808843c
YT		 1088 return 0;
1089}
1090
1091static void alps_process_trackstick_packet_v7(struct psmouse *psmouse)
1092{
1093 struct alps_data *priv = psmouse->private;
1094 unsigned char *packet = psmouse->packet;
1095 struct input_dev *dev2 = priv->dev2;
1096 int x, y, z, left, right, middle;
1097
34412ba2
PR		 1098 /* It should be a DualPoint when received trackstick packet */
1099 if (!(priv->flags & ALPS_DUALPOINT)) {
1100 psmouse_warn(psmouse,
1101 "Rejected trackstick packet from non DualPoint device");
1102 return;
1103 }
1104
3808843c
YT		 1105 x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2);
1106 y = (packet[3] & 0x07) | (packet[4] & 0xb8) |
1107 ((packet[3] & 0x20) << 1);
1108 z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1);
1109
1110 left = (packet[1] & 0x01);
1111 right = (packet[1] & 0x02) >> 1;
1112 middle = (packet[1] & 0x04) >> 2;
1113
088df2cc
HG		 1114 input_report_rel(dev2, REL_X, (char)x);
1115 input_report_rel(dev2, REL_Y, -((char)y));
3808843c
YT		 1116
1117 input_report_key(dev2, BTN_LEFT, left);
1118 input_report_key(dev2, BTN_RIGHT, right);
1119 input_report_key(dev2, BTN_MIDDLE, middle);
1120
1121 input_sync(dev2);
1122}
1123
1124static void alps_process_touchpad_packet_v7(struct psmouse *psmouse)
1125{
1126 struct alps_data *priv = psmouse->private;
1127 struct input_dev *dev = psmouse->dev;
1128 struct alps_fields *f = &priv->f;
1129
1130 memset(f, 0, sizeof(*f));
1131
1132 if (priv->decode_fields(f, psmouse->packet, psmouse))
1133 return;
1134
1135 alps_report_mt_data(psmouse, alps_get_mt_count(f->mt));
1136
1137 input_mt_report_finger_count(dev, f->fingers);
1138
1139 input_report_key(dev, BTN_LEFT, f->left);
1140 input_report_key(dev, BTN_RIGHT, f->right);
1141 input_report_key(dev, BTN_MIDDLE, f->middle);
1142
1143 input_sync(dev);
1144}
1145
1146static void alps_process_packet_v7(struct psmouse *psmouse)
1147{
1148 unsigned char *packet = psmouse->packet;
1149
1150 if (packet[0] == 0x48 && (packet[4] & 0x47) == 0x06)
1151 alps_process_trackstick_packet_v7(psmouse);
1152 else
1153 alps_process_touchpad_packet_v7(psmouse);
1154}
1155
23fce365 1156static enum SS4_PACKET_ID alps_get_pkt_id_ss4_v2(unsigned char *byte)
3db5b9f7 1157{
23fce365 1158 enum SS4_PACKET_ID pkt_id = SS4_PACKET_ID_IDLE;
3db5b9f7 1159
4777ac22
BG		 1160 switch (byte[3] & 0x30) {
1161 case 0x00:
23fce365 1162 if (SS4_IS_IDLE_V2(byte)) {
4777ac22
BG		 1163 pkt_id = SS4_PACKET_ID_IDLE;
1164 } else {
1165 pkt_id = SS4_PACKET_ID_ONE;
1166 }
1167 break;
1168 case 0x10:
1169 /* two-finger finger positions */
3db5b9f7 1170 pkt_id = SS4_PACKET_ID_TWO;
4777ac22
BG		 1171 break;
1172 case 0x20:
1173 /* stick pointer */
1174 pkt_id = SS4_PACKET_ID_STICK;
1175 break;
1176 case 0x30:
1177 /* third and fourth finger positions */
3db5b9f7 1178 pkt_id = SS4_PACKET_ID_MULTI;
4777ac22 1179 break;
3db5b9f7
MO		 1180 }
1181
1182 return pkt_id;
1183}
1184
1185static int alps_decode_ss4_v2(struct alps_fields *f,
1186 unsigned char *p, struct psmouse *psmouse)
1187{
1188 struct alps_data *priv = psmouse->private;
23fce365 1189 enum SS4_PACKET_ID pkt_id;
3db5b9f7
MO		 1190 unsigned int no_data_x, no_data_y;
1191
1192 pkt_id = alps_get_pkt_id_ss4_v2(p);
1193
1194 /* Current packet is 1Finger coordinate packet */
1195 switch (pkt_id) {
1196 case SS4_PACKET_ID_ONE:
1197 f->mt[0].x = SS4_1F_X_V2(p);
1198 f->mt[0].y = SS4_1F_Y_V2(p);
1199 f->pressure = ((SS4_1F_Z_V2(p)) * 2) & 0x7f;
a8317763
BG		 1200 /*
1201 * When a button is held the device will give us events
1202 * with x, y, and pressure of 0. This causes annoying jumps
1203 * if a touch is released while the button is held.
1204 * Handle this by claiming zero contacts.
1205 */
1206 f->fingers = f->pressure > 0 ? 1 : 0;
3db5b9f7
MO		 1207 f->first_mp = 0;
1208 f->is_mp = 0;
1209 break;
1210
1211 case SS4_PACKET_ID_TWO:
1212 if (priv->flags & ALPS_BUTTONPAD) {
1213 f->mt[0].x = SS4_BTL_MF_X_V2(p, 0);
1214 f->mt[0].y = SS4_BTL_MF_Y_V2(p, 0);
1215 f->mt[1].x = SS4_BTL_MF_X_V2(p, 1);
1216 f->mt[1].y = SS4_BTL_MF_Y_V2(p, 1);
1217 } else {
1218 f->mt[0].x = SS4_STD_MF_X_V2(p, 0);
1219 f->mt[0].y = SS4_STD_MF_Y_V2(p, 0);
1220 f->mt[1].x = SS4_STD_MF_X_V2(p, 1);
1221 f->mt[1].y = SS4_STD_MF_Y_V2(p, 1);
1222 }
1223 f->pressure = SS4_MF_Z_V2(p, 0) ? 0x30 : 0;
1224
1225 if (SS4_IS_MF_CONTINUE(p)) {
1226 f->first_mp = 1;
1227 } else {
1228 f->fingers = 2;
1229 f->first_mp = 0;
1230 }
1231 f->is_mp = 0;
1232
1233 break;
1234
1235 case SS4_PACKET_ID_MULTI:
1236 if (priv->flags & ALPS_BUTTONPAD) {
1237 f->mt[2].x = SS4_BTL_MF_X_V2(p, 0);
1238 f->mt[2].y = SS4_BTL_MF_Y_V2(p, 0);
1239 f->mt[3].x = SS4_BTL_MF_X_V2(p, 1);
1240 f->mt[3].y = SS4_BTL_MF_Y_V2(p, 1);
1241 no_data_x = SS4_MFPACKET_NO_AX_BL;
1242 no_data_y = SS4_MFPACKET_NO_AY_BL;
1243 } else {
1244 f->mt[2].x = SS4_STD_MF_X_V2(p, 0);
1245 f->mt[2].y = SS4_STD_MF_Y_V2(p, 0);
1246 f->mt[3].x = SS4_STD_MF_X_V2(p, 1);
1247 f->mt[3].y = SS4_STD_MF_Y_V2(p, 1);
1248 no_data_x = SS4_MFPACKET_NO_AX;
1249 no_data_y = SS4_MFPACKET_NO_AY;
1250 }
1251
1252 f->first_mp = 0;
1253 f->is_mp = 1;
1254
1255 if (SS4_IS_5F_DETECTED(p)) {
1256 f->fingers = 5;
1257 } else if (f->mt[3].x == no_data_x &&
1258 f->mt[3].y == no_data_y) {
1259 f->mt[3].x = 0;
1260 f->mt[3].y = 0;
1261 f->fingers = 3;
1262 } else {
1263 f->fingers = 4;
1264 }
1265 break;
1266
4777ac22 1267 case SS4_PACKET_ID_STICK:
7229c58c
PD		 1268 /*
1269 * x, y, and pressure are decoded in
1270 * alps_process_packet_ss4_v2()
1271 */
1272 f->first_mp = 0;
1273 f->is_mp = 0;
4777ac22
BG		 1274 break;
1275
3db5b9f7
MO		 1276 case SS4_PACKET_ID_IDLE:
1277 default:
1278 memset(f, 0, sizeof(struct alps_fields));
1279 break;
1280 }
1281
4777ac22
BG		 1282 /* handle buttons */
1283 if (pkt_id == SS4_PACKET_ID_STICK) {
1284 f->ts_left = !!(SS4_BTN_V2(p) & 0x01);
7f3298f8
MO		 1285 f->ts_right = !!(SS4_BTN_V2(p) & 0x02);
1286 f->ts_middle = !!(SS4_BTN_V2(p) & 0x04);
4777ac22
BG		 1287 } else {
1288 f->left = !!(SS4_BTN_V2(p) & 0x01);
1289 if (!(priv->flags & ALPS_BUTTONPAD)) {
1290 f->right = !!(SS4_BTN_V2(p) & 0x02);
1291 f->middle = !!(SS4_BTN_V2(p) & 0x04);
1292 }
3db5b9f7
MO		 1293 }
1294
1295 return 0;
1296}
1297
1298static void alps_process_packet_ss4_v2(struct psmouse *psmouse)
1299{
1300 struct alps_data *priv = psmouse->private;
1301 unsigned char *packet = psmouse->packet;
1302 struct input_dev *dev = psmouse->dev;
4777ac22 1303 struct input_dev *dev2 = priv->dev2;
3db5b9f7
MO		 1304 struct alps_fields *f = &priv->f;
1305
1306 memset(f, 0, sizeof(struct alps_fields));
1307 priv->decode_fields(f, packet, psmouse);
1308 if (priv->multi_packet) {
1309 /*
1310 * Sometimes the first packet will indicate a multi-packet
1311 * sequence, but sometimes the next multi-packet would not
1312 * come. Check for this, and when it happens process the
1313 * position packet as usual.
1314 */
1315 if (f->is_mp) {
1316 /* Now process the 1st packet */
1317 priv->decode_fields(f, priv->multi_data, psmouse);
1318 } else {
1319 priv->multi_packet = 0;
1320 }
1321 }
1322
1323 /*
1324 * "f.is_mp" would always be '0' after merging the 1st and 2nd packet.
1325 * When it is set, it means 2nd packet comes without 1st packet come.
1326 */
1327 if (f->is_mp)
1328 return;
1329
1330 /* Save the first packet */
1331 if (!priv->multi_packet && f->first_mp) {
1332 priv->multi_packet = 1;
1333 memcpy(priv->multi_data, packet, sizeof(priv->multi_data));
1334 return;
1335 }
1336
1337 priv->multi_packet = 0;
1338
864db929
PD		 1339 /* Report trackstick */
1340 if (alps_get_pkt_id_ss4_v2(packet) == SS4_PACKET_ID_STICK) {
7229c58c
PD		 1341 if (!(priv->flags & ALPS_DUALPOINT)) {
1342 psmouse_warn(psmouse,
1343 "Rejected trackstick packet from non DualPoint device");
1344 return;
864db929 1345 }
7229c58c 1346
23fce365
PD		 1347 input_report_rel(dev2, REL_X, SS4_TS_X_V2(packet));
1348 input_report_rel(dev2, REL_Y, SS4_TS_Y_V2(packet));
1349 input_report_abs(dev2, ABS_PRESSURE, SS4_TS_Z_V2(packet));
7229c58c
PD		 1350
1351 input_report_key(dev2, BTN_LEFT, f->ts_left);
1352 input_report_key(dev2, BTN_RIGHT, f->ts_right);
1353 input_report_key(dev2, BTN_MIDDLE, f->ts_middle);
1354
1355 input_sync(dev2);
864db929
PD		 1356 return;
1357 }
1358
1359 /* Report touchpad */
3db5b9f7
MO		 1360 alps_report_mt_data(psmouse, (f->fingers <= 4) ? f->fingers : 4);
1361
1362 input_mt_report_finger_count(dev, f->fingers);
1363
1364 input_report_key(dev, BTN_LEFT, f->left);
1365 input_report_key(dev, BTN_RIGHT, f->right);
1366 input_report_key(dev, BTN_MIDDLE, f->middle);
1367
1368 input_report_abs(dev, ABS_PRESSURE, f->pressure);
1369 input_sync(dev);
1370}
1371
1372static bool alps_is_valid_package_ss4_v2(struct psmouse *psmouse)
1373{
1374 if (psmouse->pktcnt == 4 && ((psmouse->packet[3] & 0x08) != 0x08))
1375 return false;
1376 if (psmouse->pktcnt == 6 && ((psmouse->packet[5] & 0x10) != 0x0))
1377 return false;
1378 return true;
1379}
1380
04aae283
PR		 1381static DEFINE_MUTEX(alps_mutex);
1382
1383static void alps_register_bare_ps2_mouse(struct work_struct *work)
1384{
1385 struct alps_data *priv =
1386 container_of(work, struct alps_data, dev3_register_work.work);
1387 struct psmouse *psmouse = priv->psmouse;
1388 struct input_dev *dev3;
1389 int error = 0;
1390
1391 mutex_lock(&alps_mutex);
1392
1393 if (priv->dev3)
1394 goto out;
1395
1396 dev3 = input_allocate_device();
1397 if (!dev3) {
1398 psmouse_err(psmouse, "failed to allocate secondary device\n");
1399 error = -ENOMEM;
1400 goto out;
1401 }
1402
1403 snprintf(priv->phys3, sizeof(priv->phys3), "%s/%s",
1404 psmouse->ps2dev.serio->phys,
1405 (priv->dev2 ? "input2" : "input1"));
1406 dev3->phys = priv->phys3;
1407
1408 /*
1409 * format of input device name is: "protocol vendor name"
1410 * see function psmouse_switch_protocol() in psmouse-base.c
1411 */
1412 dev3->name = "PS/2 ALPS Mouse";
1413
1414 dev3->id.bustype = BUS_I8042;
1415 dev3->id.vendor = 0x0002;
1416 dev3->id.product = PSMOUSE_PS2;
1417 dev3->id.version = 0x0000;
1418 dev3->dev.parent = &psmouse->ps2dev.serio->dev;
1419
1420 input_set_capability(dev3, EV_REL, REL_X);
1421 input_set_capability(dev3, EV_REL, REL_Y);
1422 input_set_capability(dev3, EV_KEY, BTN_LEFT);
1423 input_set_capability(dev3, EV_KEY, BTN_RIGHT);
1424 input_set_capability(dev3, EV_KEY, BTN_MIDDLE);
1425
1426 __set_bit(INPUT_PROP_POINTER, dev3->propbit);
1427
1428 error = input_register_device(dev3);
1429 if (error) {
1430 psmouse_err(psmouse,
1431 "failed to register secondary device: %d\n",
1432 error);
1433 input_free_device(dev3);
1434 goto out;
1435 }
1436
1437 priv->dev3 = dev3;
1438
1439out:
1440 /*
1441 * Save the error code so that we can detect that we
1442 * already tried to create the device.
1443 */
1444 if (error)
1445 priv->dev3 = ERR_PTR(error);
1446
1447 mutex_unlock(&alps_mutex);
1448}
1449
59c30afb 1450static void alps_report_bare_ps2_packet(struct psmouse *psmouse,
1d9f2626
SK		 1451 unsigned char packet[],
1452 bool report_buttons)
1453{
59c30afb 1454 struct alps_data *priv = psmouse->private;
6bcca19f 1455 struct input_dev *dev, *dev2 = NULL;
59c30afb 1456
e3a79212
HG		 1457 /* Figure out which device to use to report the bare packet */
1458 if (priv->proto_version == ALPS_PROTO_V2 &&
1459 (priv->flags & ALPS_DUALPOINT)) {
1460 /* On V2 devices the DualPoint Stick reports bare packets */
1461 dev = priv->dev2;
6bcca19f 1462 dev2 = psmouse->dev;
e3a79212 1463 } else if (unlikely(IS_ERR_OR_NULL(priv->dev3))) {
59c30afb
HG		 1464 /* Register dev3 mouse if we received PS/2 packet first time */
1465 if (!IS_ERR(priv->dev3))
1466 psmouse_queue_work(psmouse, &priv->dev3_register_work,
1467 0);
1468 return;
1469 } else {
1470 dev = priv->dev3;
1471 }
1472
1d9f2626 1473 if (report_buttons)
6bcca19f 1474 alps_report_buttons(dev, dev2,
1d9f2626
SK		 1475 packet[0] & 1, packet[0] & 2, packet[0] & 4);
1476
04aae283 1477 input_report_rel(dev, REL_X,
1d9f2626 1478 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0);
04aae283 1479 input_report_rel(dev, REL_Y,
1d9f2626
SK		 1480 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0);
1481
04aae283 1482 input_sync(dev);
1d9f2626
SK		 1483}
1484
1485static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse)
1486{
1487 struct alps_data *priv = psmouse->private;
1488
1489 if (psmouse->pktcnt < 6)
1490 return PSMOUSE_GOOD_DATA;
1491
1492 if (psmouse->pktcnt == 6) {
1493 /*
1494 * Start a timer to flush the packet if it ends up last
1495 * 6-byte packet in the stream. Timer needs to fire
1496 * psmouse core times out itself. 20 ms should be enough
1497 * to decide if we are getting more data or not.
1498 */
1499 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20));
1500 return PSMOUSE_GOOD_DATA;
1501 }
1502
1503 del_timer(&priv->timer);
1504
1505 if (psmouse->packet[6] & 0x80) {
1506
1507 /*
1508 * Highest bit is set - that means we either had
1509 * complete ALPS packet and this is start of the
1510 * next packet or we got garbage.
1511 */
1512
1513 if (((psmouse->packet[3] |
1514 psmouse->packet[4] |
1515 psmouse->packet[5]) & 0x80) ||
99df65e7 1516 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) {
b5d21704 1517 psmouse_dbg(psmouse,
3b112923
AS		 1518 "refusing packet %4ph (suspected interleaved ps/2)\n",
1519 psmouse->packet + 3);
1d9f2626
SK		 1520 return PSMOUSE_BAD_DATA;
1521 }
1522
24af5cb9 1523 priv->process_packet(psmouse);
1d9f2626
SK		 1524
1525 /* Continue with the next packet */
1526 psmouse->packet[0] = psmouse->packet[6];
1527 psmouse->pktcnt = 1;
1528
1529 } else {
1530
1531 /*
1532 * High bit is 0 - that means that we indeed got a PS/2
1533 * packet in the middle of ALPS packet.
1534 *
1535 * There is also possibility that we got 6-byte ALPS
1536 * packet followed by 3-byte packet from trackpoint. We
1537 * can not distinguish between these 2 scenarios but
b5d21704 1538 * because the latter is unlikely to happen in course of
1d9f2626
SK		 1539 * normal operation (user would need to press all
1540 * buttons on the pad and start moving trackpoint
1541 * without touching the pad surface) we assume former.
1542 * Even if we are wrong the wost thing that would happen
1543 * the cursor would jump but we should not get protocol
b5d21704 1544 * de-synchronization.
1d9f2626
SK		 1545 */
1546
59c30afb
HG		 1547 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3],
1548 false);
1d9f2626
SK		 1549
1550 /*
1551 * Continue with the standard ALPS protocol handling,
1552 * but make sure we won't process it as an interleaved
1553 * packet again, which may happen if all buttons are
1554 * pressed. To avoid this let's reset the 4th bit which
1555 * is normally 1.
1556 */
1557 psmouse->packet[3] = psmouse->packet[6] & 0xf7;
1558 psmouse->pktcnt = 4;
1559 }
1560
1561 return PSMOUSE_GOOD_DATA;
1562}
1563
1564static void alps_flush_packet(unsigned long data)
1565{
1566 struct psmouse *psmouse = (struct psmouse *)data;
24af5cb9 1567 struct alps_data *priv = psmouse->private;
1d9f2626
SK		 1568
1569 serio_pause_rx(psmouse->ps2dev.serio);
1570
b46615fe 1571 if (psmouse->pktcnt == psmouse->pktsize) {
1d9f2626
SK		 1572
1573 /*
1574 * We did not any more data in reasonable amount of time.
1575 * Validate the last 3 bytes and process as a standard
1576 * ALPS packet.
1577 */
1578 if ((psmouse->packet[3] |
1579 psmouse->packet[4] |
1580 psmouse->packet[5]) & 0x80) {
b5d21704 1581 psmouse_dbg(psmouse,
3b112923
AS		 1582 "refusing packet %3ph (suspected interleaved ps/2)\n",
1583 psmouse->packet + 3);
1d9f2626 1584 } else {
24af5cb9 1585 priv->process_packet(psmouse);
1d9f2626
SK		 1586 }
1587 psmouse->pktcnt = 0;
1588 }
1589
1590 serio_continue_rx(psmouse->ps2dev.serio);
1591}
1592
7d12e780 1593static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
1da177e4
LT		 1594{
1595 struct alps_data *priv = psmouse->private;
1596
4ab8f7f3
PR		 1597 /*
1598 * Check if we are dealing with a bare PS/2 packet, presumably from
1599 * a device connected to the external PS/2 port. Because bare PS/2
1600 * protocol does not have enough constant bits to self-synchronize
1601 * properly we only do this if the device is fully synchronized.
3db5b9f7 1602 * Can not distinguish V8's first byte from PS/2 packet's
4ab8f7f3 1603 */
3db5b9f7
MO		 1604 if (priv->proto_version != ALPS_PROTO_V8 &&
1605 !psmouse->out_of_sync_cnt &&
1606 (psmouse->packet[0] & 0xc8) == 0x08) {
1607
1da177e4 1608 if (psmouse->pktcnt == 3) {
59c30afb
HG		 1609 alps_report_bare_ps2_packet(psmouse, psmouse->packet,
1610 true);
1da177e4
LT		 1611 return PSMOUSE_FULL_PACKET;
1612 }
1613 return PSMOUSE_GOOD_DATA;
1614 }
1615
1d9f2626
SK		 1616 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */
1617
99df65e7 1618 if ((priv->flags & ALPS_PS2_INTERLEAVED) &&
1d9f2626
SK		 1619 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) {
1620 return alps_handle_interleaved_ps2(psmouse);
1621 }
1622
99df65e7 1623 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) {
b5d21704
DT		 1624 psmouse_dbg(psmouse,
1625 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n",
99df65e7 1626 psmouse->packet[0], priv->mask0, priv->byte0);
1da177e4 1627 return PSMOUSE_BAD_DATA;
1d9f2626 1628 }
1da177e4 1629
b46615fe 1630 /* Bytes 2 - pktsize should have 0 in the highest bit */
a7ef82ae 1631 if (priv->proto_version < ALPS_PROTO_V5 &&
75af9e56 1632 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize &&
1d9f2626 1633 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) {
b5d21704
DT		 1634 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
1635 psmouse->pktcnt - 1,
1636 psmouse->packet[psmouse->pktcnt - 1]);
a7ef82ae 1637
fb2dd7a6 1638 if (priv->proto_version == ALPS_PROTO_V3_RUSHMORE &&
a7ef82ae
PR		 1639 psmouse->pktcnt == psmouse->pktsize) {
1640 /*
1641 * Some Dell boxes, such as Latitude E6440 or E7440
1642 * with closed lid, quite often smash last byte of
1643 * otherwise valid packet with 0xff. Given that the
1644 * next packet is very likely to be valid let's
1645 * report PSMOUSE_FULL_PACKET but not process data,
1646 * rather than reporting PSMOUSE_BAD_DATA and
1647 * filling the logs.
1648 */
1649 return PSMOUSE_FULL_PACKET;
1650 }
1651
1da177e4 1652 return PSMOUSE_BAD_DATA;
1d9f2626 1653 }
1da177e4 1654
3db5b9f7
MO		 1655 if ((priv->proto_version == ALPS_PROTO_V7 &&
1656 !alps_is_valid_package_v7(psmouse)) ||
1657 (priv->proto_version == ALPS_PROTO_V8 &&
1658 !alps_is_valid_package_ss4_v2(psmouse))) {
3808843c
YT		 1659 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
1660 psmouse->pktcnt - 1,
1661 psmouse->packet[psmouse->pktcnt - 1]);
1662 return PSMOUSE_BAD_DATA;
1663 }
1664
b46615fe 1665 if (psmouse->pktcnt == psmouse->pktsize) {
24af5cb9 1666 priv->process_packet(psmouse);
1da177e4
LT		 1667 return PSMOUSE_FULL_PACKET;
1668 }
1669
1670 return PSMOUSE_GOOD_DATA;
1671}
1672
25bded7c
SF		 1673static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble)
1674{
1675 struct ps2dev *ps2dev = &psmouse->ps2dev;
1676 struct alps_data *priv = psmouse->private;
1677 int command;
1678 unsigned char *param;
1679 unsigned char dummy[4];
1680
1681 BUG_ON(nibble > 0xf);
1682
1683 command = priv->nibble_commands[nibble].command;
1684 param = (command & 0x0f00) ?
1685 dummy : (unsigned char *)&priv->nibble_commands[nibble].data;
1686
1687 if (ps2_command(ps2dev, param, command))
1688 return -1;
1689
1690 return 0;
1691}
1692
1693static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr)
1694{
1695 struct ps2dev *ps2dev = &psmouse->ps2dev;
1696 struct alps_data *priv = psmouse->private;
1697 int i, nibble;
1698
1699 if (ps2_command(ps2dev, NULL, priv->addr_command))
1700 return -1;
1701
1702 for (i = 12; i >= 0; i -= 4) {
1703 nibble = (addr >> i) & 0xf;
1704 if (alps_command_mode_send_nibble(psmouse, nibble))
1705 return -1;
1706 }
1707
1708 return 0;
1709}
1710
1711static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
1712{
1713 struct ps2dev *ps2dev = &psmouse->ps2dev;
1714 unsigned char param[4];
1715
1716 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1717 return -1;
1718
1719 /*
1720 * The address being read is returned in the first two bytes
1721 * of the result. Check that this address matches the expected
1722 * address.
1723 */
1724 if (addr != ((param[0] << 8) | param[1]))
1725 return -1;
1726
1727 return param[2];
1728}
1729
1730static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
1731{
1732 if (alps_command_mode_set_addr(psmouse, addr))
1733 return -1;
1734 return __alps_command_mode_read_reg(psmouse, addr);
1735}
1736
1737static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value)
1738{
1739 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf))
1740 return -1;
1741 if (alps_command_mode_send_nibble(psmouse, value & 0xf))
1742 return -1;
1743 return 0;
1744}
1745
1746static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr,
1747 u8 value)
1748{
1749 if (alps_command_mode_set_addr(psmouse, addr))
1750 return -1;
1751 return __alps_command_mode_write_reg(psmouse, value);
1752}
1753
24ba9707
KC		 1754static int alps_rpt_cmd(struct psmouse *psmouse, int init_command,
1755 int repeated_command, unsigned char *param)
1756{
1757 struct ps2dev *ps2dev = &psmouse->ps2dev;
1758
1759 param[0] = 0;
1760 if (init_command && ps2_command(ps2dev, param, init_command))
1761 return -EIO;
1762
1763 if (ps2_command(ps2dev, NULL, repeated_command) ||
1764 ps2_command(ps2dev, NULL, repeated_command) ||
1765 ps2_command(ps2dev, NULL, repeated_command))
1766 return -EIO;
1767
1768 param[0] = param[1] = param[2] = 0xff;
1769 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1770 return -EIO;
1771
39fbe585
DT		 1772 psmouse_dbg(psmouse, "%2.2X report: %3ph\n",
1773 repeated_command, param);
24ba9707
KC		 1774 return 0;
1775}
1776
3808843c
YT		 1777static bool alps_check_valid_firmware_id(unsigned char id[])
1778{
1779 if (id[0] == 0x73)
1780 return true;
1781
1782 if (id[0] == 0x88 &&
1783 (id[1] == 0x07 ||
1784 id[1] == 0x08 ||
1785 (id[1] & 0xf0) == 0xb0 ||
1786 (id[1] & 0xf0) == 0xc0)) {
1787 return true;
1788 }
1789
1790 return false;
1791}
1792
d18e53fc 1793static int alps_enter_command_mode(struct psmouse *psmouse)
25bded7c
SF		 1794{
1795 unsigned char param[4];
25bded7c 1796
24ba9707 1797 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) {
25bded7c
SF		 1798 psmouse_err(psmouse, "failed to enter command mode\n");
1799 return -1;
1800 }
1801
3808843c 1802 if (!alps_check_valid_firmware_id(param)) {
25bded7c 1803 psmouse_dbg(psmouse,
24ba9707 1804 "unknown response while entering command mode\n");
25bded7c
SF		 1805 return -1;
1806 }
25bded7c
SF		 1807 return 0;
1808}
1809
1810static inline int alps_exit_command_mode(struct psmouse *psmouse)
1811{
1812 struct ps2dev *ps2dev = &psmouse->ps2dev;
1813 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM))
1814 return -1;
1815 return 0;
1816}
1817
1da177e4
LT		 1818/*
1819 * For DualPoint devices select the device that should respond to
1820 * subsequent commands. It looks like glidepad is behind stickpointer,
1821 * I'd thought it would be other way around...
1822 */
25bded7c 1823static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable)
1da177e4
LT		 1824{
1825 struct ps2dev *ps2dev = &psmouse->ps2dev;
1da177e4
LT		 1826 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11;
1827
1828 if (ps2_command(ps2dev, NULL, cmd) ||
1829 ps2_command(ps2dev, NULL, cmd) ||
1830 ps2_command(ps2dev, NULL, cmd) ||
1831 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1832 return -1;
1833
1834 /* we may get 3 more bytes, just ignore them */
c611763d 1835 ps2_drain(ps2dev, 3, 100);
1da177e4
LT		 1836
1837 return 0;
1838}
1839
25bded7c 1840static int alps_absolute_mode_v1_v2(struct psmouse *psmouse)
1da177e4
LT		 1841{
1842 struct ps2dev *ps2dev = &psmouse->ps2dev;
1843
1844 /* Try ALPS magic knock - 4 disable before enable */
1845 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1846 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1847 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1848 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1849 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE))
1850 return -1;
1851
1852 /*
1853 * Switch mouse to poll (remote) mode so motion data will not
1854 * get in our way
1855 */
1856 return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL);
1857}
1858
95f75e91
YT		 1859static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word)
1860{
1861 int i, nibble;
1862
1863 /*
1864 * b0-b11 are valid bits, send sequence is inverse.
1865 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1
1866 */
1867 for (i = 0; i <= 8; i += 4) {
1868 nibble = (word >> i) & 0xf;
1869 if (alps_command_mode_send_nibble(psmouse, nibble))
1870 return -1;
1871 }
1872
1873 return 0;
1874}
1875
1876static int alps_monitor_mode_write_reg(struct psmouse *psmouse,
1877 u16 addr, u16 value)
1878{
1879 struct ps2dev *ps2dev = &psmouse->ps2dev;
1880
1881 /* 0x0A0 is the command to write the word */
1882 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) ||
1883 alps_monitor_mode_send_word(psmouse, 0x0A0) ||
1884 alps_monitor_mode_send_word(psmouse, addr) ||
1885 alps_monitor_mode_send_word(psmouse, value) ||
1886 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1887 return -1;
1888
1889 return 0;
1890}
1891
1892static int alps_monitor_mode(struct psmouse *psmouse, bool enable)
1893{
1894 struct ps2dev *ps2dev = &psmouse->ps2dev;
1895
1896 if (enable) {
1897 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */
1898 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
1899 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) ||
1900 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1901 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1902 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
1903 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1904 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
1905 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO))
1906 return -1;
1907 } else {
1908 /* EC to exit monitor mode */
1909 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP))
1910 return -1;
1911 }
1912
1913 return 0;
1914}
1915
1916static int alps_absolute_mode_v6(struct psmouse *psmouse)
1917{
1918 u16 reg_val = 0x181;
1919 int ret = -1;
1920
1921 /* enter monitor mode, to write the register */
1922 if (alps_monitor_mode(psmouse, true))
1923 return -1;
1924
1925 ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val);
1926
1927 if (alps_monitor_mode(psmouse, false))
1928 ret = -1;
1929
1930 return ret;
1931}
1932
1da177e4
LT		 1933static int alps_get_status(struct psmouse *psmouse, char *param)
1934{
1da177e4 1935 /* Get status: 0xF5 0xF5 0xF5 0xE9 */
24ba9707 1936 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param))
1da177e4
LT		 1937 return -1;
1938
1da177e4
LT		 1939 return 0;
1940}
1941
1942/*
1943 * Turn touchpad tapping on or off. The sequences are:
1944 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable,
1945 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable.
1946 * My guess that 0xE9 (GetInfo) is here as a sync point.
1947 * For models that also have stickpointer (DualPoints) its tapping
1948 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but
1949 * we don't fiddle with it.
1950 */
1951static int alps_tap_mode(struct psmouse *psmouse, int enable)
1952{
1953 struct ps2dev *ps2dev = &psmouse->ps2dev;
1954 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES;
1955 unsigned char tap_arg = enable ? 0x0A : 0x00;
1956 unsigned char param[4];
1957
1958 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) ||
1959 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1960 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1961 ps2_command(ps2dev, &tap_arg, cmd))
1962 return -1;
1963
1964 if (alps_get_status(psmouse, param))
1965 return -1;
1966
1967 return 0;
1968}
1969
f0d5c6f4
DT		 1970/*
1971 * alps_poll() - poll the touchpad for current motion packet.
1972 * Used in resync.
1973 */
1974static int alps_poll(struct psmouse *psmouse)
1975{
1976 struct alps_data *priv = psmouse->private;
b46615fe 1977 unsigned char buf[sizeof(psmouse->packet)];
b7802c5c 1978 bool poll_failed;
f0d5c6f4 1979
99df65e7 1980 if (priv->flags & ALPS_PASS)
25bded7c 1981 alps_passthrough_mode_v2(psmouse, true);
f0d5c6f4
DT		 1982
1983 poll_failed = ps2_command(&psmouse->ps2dev, buf,
1984 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0;
1985
99df65e7 1986 if (priv->flags & ALPS_PASS)
25bded7c 1987 alps_passthrough_mode_v2(psmouse, false);
f0d5c6f4 1988
99df65e7 1989 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0)
f0d5c6f4
DT		 1990 return -1;
1991
1992 if ((psmouse->badbyte & 0xc8) == 0x08) {
1993/*
1994 * Poll the track stick ...
1995 */
1996 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8)))
1997 return -1;
1998 }
1999
2000 memcpy(psmouse->packet, buf, sizeof(buf));
2001 return 0;
2002}
2003
25bded7c 2004static int alps_hw_init_v1_v2(struct psmouse *psmouse)
1da177e4
LT		 2005{
2006 struct alps_data *priv = psmouse->private;
f3a5c73d 2007
99df65e7 2008 if ((priv->flags & ALPS_PASS) &&
25bded7c 2009 alps_passthrough_mode_v2(psmouse, true)) {
1da177e4 2010 return -1;
b7802c5c 2011 }
1da177e4 2012
b7802c5c 2013 if (alps_tap_mode(psmouse, true)) {
b5d21704 2014 psmouse_warn(psmouse, "Failed to enable hardware tapping\n");
1da177e4 2015 return -1;
963f626d 2016 }
1da177e4 2017
25bded7c 2018 if (alps_absolute_mode_v1_v2(psmouse)) {
b5d21704 2019 psmouse_err(psmouse, "Failed to enable absolute mode\n");
1da177e4
LT		 2020 return -1;
2021 }
2022
99df65e7 2023 if ((priv->flags & ALPS_PASS) &&
25bded7c 2024 alps_passthrough_mode_v2(psmouse, false)) {
1da177e4 2025 return -1;
b7802c5c 2026 }
1da177e4 2027
1e0c5b12
DT		 2028 /* ALPS needs stream mode, otherwise it won't report any data */
2029 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) {
b5d21704 2030 psmouse_err(psmouse, "Failed to enable stream mode\n");
1e0c5b12
DT		 2031 return -1;
2032 }
2033
2034 return 0;
2035}
2036
95f75e91
YT		 2037static int alps_hw_init_v6(struct psmouse *psmouse)
2038{
2039 unsigned char param[2] = {0xC8, 0x14};
2040
2041 /* Enter passthrough mode to let trackpoint enter 6byte raw mode */
2042 if (alps_passthrough_mode_v2(psmouse, true))
2043 return -1;
2044
2045 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
2046 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
2047 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
2048 ps2_command(&psmouse->ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
2049 ps2_command(&psmouse->ps2dev, &param[1], PSMOUSE_CMD_SETRATE))
2050 return -1;
2051
2052 if (alps_passthrough_mode_v2(psmouse, false))
2053 return -1;
2054
2055 if (alps_absolute_mode_v6(psmouse)) {
2056 psmouse_err(psmouse, "Failed to enable absolute mode\n");
2057 return -1;
2058 }
2059
2060 return 0;
2061}
2062
25bded7c 2063/*
cd401204 2064 * Enable or disable passthrough mode to the trackstick.
25bded7c 2065 */
cd401204
KC		 2066static int alps_passthrough_mode_v3(struct psmouse *psmouse,
2067 int reg_base, bool enable)
25bded7c 2068{
cd401204 2069 int reg_val, ret = -1;
25bded7c 2070
d18e53fc 2071 if (alps_enter_command_mode(psmouse))
25bded7c
SF		 2072 return -1;
2073
cd401204
KC		 2074 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008);
2075 if (reg_val == -1)
2076 goto error;
2077
25bded7c
SF		 2078 if (enable)
2079 reg_val |= 0x01;
2080 else
2081 reg_val &= ~0x01;
2082
cd401204 2083 ret = __alps_command_mode_write_reg(psmouse, reg_val);
25bded7c 2084
cd401204
KC		 2085error:
2086 if (alps_exit_command_mode(psmouse))
2087 ret = -1;
2088 return ret;
25bded7c
SF		 2089}
2090
2091/* Must be in command mode when calling this function */
2092static int alps_absolute_mode_v3(struct psmouse *psmouse)
2093{
2094 int reg_val;
2095
2096 reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
2097 if (reg_val == -1)
2098 return -1;
2099
2100 reg_val |= 0x06;
2101 if (__alps_command_mode_write_reg(psmouse, reg_val))
2102 return -1;
2103
2104 return 0;
2105}
2106
dae928ec 2107static int alps_probe_trackstick_v3_v7(struct psmouse *psmouse, int reg_base)
25bded7c 2108{
cd401204 2109 int ret = -EIO, reg_val;
25bded7c 2110
d18e53fc 2111 if (alps_enter_command_mode(psmouse))
25bded7c
SF		 2112 goto error;
2113
cd401204 2114 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08);
25bded7c
SF		 2115 if (reg_val == -1)
2116 goto error;
cd401204
KC		 2117
2118 /* bit 7: trackstick is present */
2119 ret = reg_val & 0x80 ? 0 : -ENODEV;
2120
2121error:
2122 alps_exit_command_mode(psmouse);
2123 return ret;
2124}
2125
2126static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base)
2127{
2128 struct ps2dev *ps2dev = &psmouse->ps2dev;
2129 int ret = 0;
2130 unsigned char param[4];
2131
2132 if (alps_passthrough_mode_v3(psmouse, reg_base, true))
2133 return -EIO;
2134
2135 /*
2136 * E7 report for the trackstick
2137 *
2138 * There have been reports of failures to seem to trace back
2139 * to the above trackstick check failing. When these occur
2140 * this E7 report fails, so when that happens we continue
2141 * with the assumption that there isn't a trackstick after
2142 * all.
2143 */
2144 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) {
a09221e8 2145 psmouse_warn(psmouse, "Failed to initialize trackstick (E7 report failed)\n");
cd401204
KC		 2146 ret = -ENODEV;
2147 } else {
39fbe585 2148 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param);
25bded7c
SF		 2149
2150 /*
cd401204
KC		 2151 * Not sure what this does, but it is absolutely
2152 * essential. Without it, the touchpad does not
2153 * work at all and the trackstick just emits normal
2154 * PS/2 packets.
25bded7c 2155 */
cd401204
KC		 2156 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
2157 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
2158 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
2159 alps_command_mode_send_nibble(psmouse, 0x9) ||
2160 alps_command_mode_send_nibble(psmouse, 0x4)) {
2161 psmouse_err(psmouse,
2162 "Error sending magic E6 sequence\n");
2163 ret = -EIO;
2164 goto error;
25bded7c
SF		 2165 }
2166
cd401204
KC		 2167 /*
2168 * This ensures the trackstick packets are in the format
2169 * supported by this driver. If bit 1 isn't set the packet
2170 * format is different.
2171 */
d18e53fc 2172 if (alps_enter_command_mode(psmouse) ||
cd401204
KC		 2173 alps_command_mode_write_reg(psmouse,
2174 reg_base + 0x08, 0x82) ||
2175 alps_exit_command_mode(psmouse))
2176 ret = -EIO;
25bded7c
SF		 2177 }
2178
cd401204
KC		 2179error:
2180 if (alps_passthrough_mode_v3(psmouse, reg_base, false))
2181 ret = -EIO;
2182
2183 return ret;
2184}
2185
2186static int alps_hw_init_v3(struct psmouse *psmouse)
2187{
4b1af853 2188 struct alps_data *priv = psmouse->private;
cd401204
KC		 2189 struct ps2dev *ps2dev = &psmouse->ps2dev;
2190 int reg_val;
2191 unsigned char param[4];
2192
4b1af853 2193 if ((priv->flags & ALPS_DUALPOINT) &&
cd401204
KC		 2194 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO)
2195 goto error;
2196
d18e53fc 2197 if (alps_enter_command_mode(psmouse) ||
cd401204 2198 alps_absolute_mode_v3(psmouse)) {
25bded7c
SF		 2199 psmouse_err(psmouse, "Failed to enter absolute mode\n");
2200 goto error;
2201 }
2202
2203 reg_val = alps_command_mode_read_reg(psmouse, 0x0006);
2204 if (reg_val == -1)
2205 goto error;
2206 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
2207 goto error;
2208
2209 reg_val = alps_command_mode_read_reg(psmouse, 0x0007);
2210 if (reg_val == -1)
2211 goto error;
2212 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
2213 goto error;
2214
2215 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1)
2216 goto error;
2217 if (__alps_command_mode_write_reg(psmouse, 0x04))
2218 goto error;
2219
2220 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1)
2221 goto error;
2222 if (__alps_command_mode_write_reg(psmouse, 0x03))
2223 goto error;
2224
2225 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1)
2226 goto error;
2227 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03))
2228 goto error;
2229
2230 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1)
2231 goto error;
2232 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04))
2233 goto error;
2234
25bded7c
SF		 2235 alps_exit_command_mode(psmouse);
2236
2237 /* Set rate and enable data reporting */
2238 param[0] = 0x64;
2239 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
2240 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
2241 psmouse_err(psmouse, "Failed to enable data reporting\n");
2242 return -1;
2243 }
2244
2245 return 0;
2246
25bded7c
SF		 2247error:
2248 /*
2249 * Leaving the touchpad in command mode will essentially render
2250 * it unusable until the machine reboots, so exit it here just
2251 * to be safe
2252 */
2253 alps_exit_command_mode(psmouse);
2254 return -1;
2255}
2256
f3f33c67
HG		 2257static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch)
2258{
2259 int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys;
2260 struct alps_data *priv = psmouse->private;
2261
2262 reg = alps_command_mode_read_reg(psmouse, reg_pitch);
2263 if (reg < 0)
2264 return reg;
2265
2266 x_pitch = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */
2267 x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */
2268
2269 y_pitch = (char)reg >> 4; /* sign extend upper 4 bits */
2270 y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */
2271
2272 reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1);
2273 if (reg < 0)
2274 return reg;
2275
2276 x_electrode = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */
2277 x_electrode = 17 + x_electrode;
2278
2279 y_electrode = (char)reg >> 4; /* sign extend upper 4 bits */
2280 y_electrode = 13 + y_electrode;
2281
2282 x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */
2283 y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */
2284
2285 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */
2286 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */
2287
2288 psmouse_dbg(psmouse,
2289 "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n",
2290 x_pitch, y_pitch, x_electrode, y_electrode,
2291 x_phys / 10, y_phys / 10, priv->x_res, priv->y_res);
2292
2293 return 0;
2294}
2295
1302bac3
KC		 2296static int alps_hw_init_rushmore_v3(struct psmouse *psmouse)
2297{
cd401204 2298 struct alps_data *priv = psmouse->private;
1302bac3
KC		 2299 struct ps2dev *ps2dev = &psmouse->ps2dev;
2300 int reg_val, ret = -1;
2301
cd401204
KC		 2302 if (priv->flags & ALPS_DUALPOINT) {
2303 reg_val = alps_setup_trackstick_v3(psmouse,
2304 ALPS_REG_BASE_RUSHMORE);
2305 if (reg_val == -EIO)
2306 goto error;
cd401204
KC		 2307 }
2308
d18e53fc 2309 if (alps_enter_command_mode(psmouse) ||
1302bac3
KC		 2310 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 ||
2311 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00))
2312 goto error;
2313
f3f33c67
HG		 2314 if (alps_get_v3_v7_resolution(psmouse, 0xc2da))
2315 goto error;
2316
1302bac3
KC		 2317 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6);
2318 if (reg_val == -1)
2319 goto error;
2320 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd))
2321 goto error;
2322
2323 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64))
2324 goto error;
2325
2326 /* enter absolute mode */
2327 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4);
2328 if (reg_val == -1)
2329 goto error;
2330 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02))
2331 goto error;
2332
2333 alps_exit_command_mode(psmouse);
2334 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
2335
2336error:
2337 alps_exit_command_mode(psmouse);
2338 return ret;
2339}
2340
25bded7c
SF		 2341/* Must be in command mode when calling this function */
2342static int alps_absolute_mode_v4(struct psmouse *psmouse)
2343{
2344 int reg_val;
2345
2346 reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
2347 if (reg_val == -1)
2348 return -1;
2349
2350 reg_val |= 0x02;
2351 if (__alps_command_mode_write_reg(psmouse, reg_val))
2352 return -1;
2353
2354 return 0;
2355}
2356
2357static int alps_hw_init_v4(struct psmouse *psmouse)
2358{
25bded7c
SF		 2359 struct ps2dev *ps2dev = &psmouse->ps2dev;
2360 unsigned char param[4];
2361
d18e53fc 2362 if (alps_enter_command_mode(psmouse))
25bded7c
SF		 2363 goto error;
2364
2365 if (alps_absolute_mode_v4(psmouse)) {
2366 psmouse_err(psmouse, "Failed to enter absolute mode\n");
2367 goto error;
2368 }
2369
2370 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c))
2371 goto error;
2372
2373 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03))
2374 goto error;
2375
2376 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03))
2377 goto error;
2378
2379 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15))
2380 goto error;
2381
2382 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01))
2383 goto error;
2384
2385 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03))
2386 goto error;
2387
2388 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03))
2389 goto error;
2390
2391 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03))
2392 goto error;
2393
2394 alps_exit_command_mode(psmouse);
2395
2396 /*
2397 * This sequence changes the output from a 9-byte to an
2398 * 8-byte format. All the same data seems to be present,
2399 * just in a more compact format.
2400 */
2401 param[0] = 0xc8;
2402 param[1] = 0x64;
2403 param[2] = 0x50;
2404 if (ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
2405 ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE) ||
2406 ps2_command(ps2dev, &param[2], PSMOUSE_CMD_SETRATE) ||
2407 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID))
2408 return -1;
2409
2410 /* Set rate and enable data reporting */
2411 param[0] = 0x64;
2412 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
2413 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
2414 psmouse_err(psmouse, "Failed to enable data reporting\n");
2415 return -1;
2416 }
2417
2418 return 0;
2419
2420error:
2421 /*
2422 * Leaving the touchpad in command mode will essentially render
2423 * it unusable until the machine reboots, so exit it here just
2424 * to be safe
2425 */
2426 alps_exit_command_mode(psmouse);
2427 return -1;
2428}
2429
3db5b9f7
MO		 2430static int alps_get_otp_values_ss4_v2(struct psmouse *psmouse,
2431 unsigned char index, unsigned char otp[])
2432{
2433 struct ps2dev *ps2dev = &psmouse->ps2dev;
2434
2435 switch (index) {
2436 case 0:
2437 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
2438 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
2439 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO))
2440 return -1;
2441
2442 break;
2443
2444 case 1:
2445 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
2446 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
2447 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO))
2448 return -1;
2449
2450 break;
2451 }
2452
2453 return 0;
2454}
2455
07f19e3d
FW		 2456static int alps_update_device_area_ss4_v2(unsigned char otp[][4],
2457 struct alps_data *priv)
3db5b9f7
MO		 2458{
2459 int num_x_electrode;
2460 int num_y_electrode;
2461 int x_pitch, y_pitch, x_phys, y_phys;
2462
697bbb36
MO		 2463 if (IS_SS4PLUS_DEV(priv->dev_id)) {
2464 num_x_electrode =
2465 SS4PLUS_NUMSENSOR_XOFFSET + (otp[0][2] & 0x0F);
2466 num_y_electrode =
2467 SS4PLUS_NUMSENSOR_YOFFSET + ((otp[0][2] >> 4) & 0x0F);
3db5b9f7 2468
697bbb36
MO		 2469 priv->x_max =
2470 (num_x_electrode - 1) * SS4PLUS_COUNT_PER_ELECTRODE;
2471 priv->y_max =
2472 (num_y_electrode - 1) * SS4PLUS_COUNT_PER_ELECTRODE;
3db5b9f7 2473
697bbb36
MO		 2474 x_pitch = (otp[0][1] & 0x0F) + SS4PLUS_MIN_PITCH_MM;
2475 y_pitch = ((otp[0][1] >> 4) & 0x0F) + SS4PLUS_MIN_PITCH_MM;
2476
2477 } else {
2478 num_x_electrode =
2479 SS4_NUMSENSOR_XOFFSET + (otp[1][0] & 0x0F);
2480 num_y_electrode =
2481 SS4_NUMSENSOR_YOFFSET + ((otp[1][0] >> 4) & 0x0F);
2482
2483 priv->x_max =
2484 (num_x_electrode - 1) * SS4_COUNT_PER_ELECTRODE;
2485 priv->y_max =
2486 (num_y_electrode - 1) * SS4_COUNT_PER_ELECTRODE;
2487
2488 x_pitch = ((otp[1][2] >> 2) & 0x07) + SS4_MIN_PITCH_MM;
2489 y_pitch = ((otp[1][2] >> 5) & 0x07) + SS4_MIN_PITCH_MM;
2490 }
3db5b9f7
MO		 2491
2492 x_phys = x_pitch * (num_x_electrode - 1); /* In 0.1 mm units */
2493 y_phys = y_pitch * (num_y_electrode - 1); /* In 0.1 mm units */
2494
2495 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */
2496 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */
2497
2498 return 0;
2499}
2500
07f19e3d
FW		 2501static int alps_update_btn_info_ss4_v2(unsigned char otp[][4],
2502 struct alps_data *priv)
3db5b9f7 2503{
3db5b9f7
MO		 2504 unsigned char is_btnless;
2505
697bbb36
MO		 2506 if (IS_SS4PLUS_DEV(priv->dev_id))
2507 is_btnless = (otp[1][0] >> 1) & 0x01;
2508 else
2509 is_btnless = (otp[1][1] >> 3) & 0x01;
3db5b9f7
MO		 2510
2511 if (is_btnless)
2512 priv->flags |= ALPS_BUTTONPAD;
2513
2514 return 0;
2515}
2516
697bbb36
MO		 2517static int alps_update_dual_info_ss4_v2(unsigned char otp[][4],
2518 struct alps_data *priv)
2519{
2520 bool is_dual = false;
2521
2522 if (IS_SS4PLUS_DEV(priv->dev_id))
2523 is_dual = (otp[0][0] >> 4) & 0x01;
2524
2525 if (is_dual)
2526 priv->flags |= ALPS_DUALPOINT |
2527 ALPS_DUALPOINT_WITH_PRESSURE;
2528
2529 return 0;
2530}
2531
3db5b9f7
MO		 2532static int alps_set_defaults_ss4_v2(struct psmouse *psmouse,
2533 struct alps_data *priv)
2534{
2535 unsigned char otp[2][4];
2536
2537 memset(otp, 0, sizeof(otp));
2538
2539 if (alps_get_otp_values_ss4_v2(psmouse, 0, &otp[0][0]) ||
2540 alps_get_otp_values_ss4_v2(psmouse, 1, &otp[1][0]))
2541 return -1;
2542
2543 alps_update_device_area_ss4_v2(otp, priv);
2544
2545 alps_update_btn_info_ss4_v2(otp, priv);
2546
697bbb36
MO		 2547 alps_update_dual_info_ss4_v2(otp, priv);
2548
3db5b9f7
MO		 2549 return 0;
2550}
2551
ee65d4b3
YT		 2552static int alps_dolphin_get_device_area(struct psmouse *psmouse,
2553 struct alps_data *priv)
2554{
2555 struct ps2dev *ps2dev = &psmouse->ps2dev;
2556 unsigned char param[4] = {0};
2557 int num_x_electrode, num_y_electrode;
2558
2559 if (alps_enter_command_mode(psmouse))
2560 return -1;
2561
2562 param[0] = 0x0a;
2563 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
2564 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
2565 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
2566 ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
2567 ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE))
2568 return -1;
2569
2570 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
2571 return -1;
2572
2573 /*
2574 * Dolphin's sensor line number is not fixed. It can be calculated
2575 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET.
2576 * Further more, we can get device's x_max and y_max by multiplying
2577 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE.
2578 *
2579 * e.g. When we get register's sensor_x = 11 & sensor_y = 8,
2580 * real sensor line number X = 11 + 8 = 19, and
2581 * real sensor line number Y = 8 + 1 = 9.
2582 * So, x_max = (19 - 1) * 64 = 1152, and
2583 * y_max = (9 - 1) * 64 = 512.
2584 */
2585 num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F);
2586 num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F);
2587 priv->x_bits = num_x_electrode;
2588 priv->y_bits = num_y_electrode;
2589 priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE;
2590 priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE;
2591
2592 if (alps_exit_command_mode(psmouse))
2593 return -1;
2594
2595 return 0;
2596}
2597
75af9e56
DT		 2598static int alps_hw_init_dolphin_v1(struct psmouse *psmouse)
2599{
2600 struct ps2dev *ps2dev = &psmouse->ps2dev;
2601 unsigned char param[2];
2602
2603 /* This is dolphin "v1" as empirically defined by florin9doi */
2604 param[0] = 0x64;
2605 param[1] = 0x28;
2606
2607 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
2608 ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
2609 ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE))
2610 return -1;
2611
2612 return 0;
2613}
2614
3808843c
YT		 2615static int alps_hw_init_v7(struct psmouse *psmouse)
2616{
2617 struct ps2dev *ps2dev = &psmouse->ps2dev;
2618 int reg_val, ret = -1;
2619
2620 if (alps_enter_command_mode(psmouse) ||
2621 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1)
2622 goto error;
2623
f3f33c67
HG		 2624 if (alps_get_v3_v7_resolution(psmouse, 0xc397))
2625 goto error;
2626
3808843c
YT		 2627 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64))
2628 goto error;
2629
2630 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4);
2631 if (reg_val == -1)
2632 goto error;
2633 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02))
2634 goto error;
2635
2636 alps_exit_command_mode(psmouse);
2637 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
2638
2639error:
2640 alps_exit_command_mode(psmouse);
2641 return ret;
2642}
2643
3db5b9f7
MO		 2644static int alps_hw_init_ss4_v2(struct psmouse *psmouse)
2645{
2646 struct ps2dev *ps2dev = &psmouse->ps2dev;
2647 char param[2] = {0x64, 0x28};
2648 int ret = -1;
2649
2650 /* enter absolute mode */
2651 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
2652 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
2653 ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
2654 ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE)) {
2655 goto error;
2656 }
2657
2658 /* T.B.D. Decread noise packet number, delete in the future */
2659 if (alps_exit_command_mode(psmouse) ||
2660 alps_enter_command_mode(psmouse) ||
2661 alps_command_mode_write_reg(psmouse, 0x001D, 0x20)) {
2662 goto error;
2663 }
2664 alps_exit_command_mode(psmouse);
2665
2666 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
2667
2668error:
2669 alps_exit_command_mode(psmouse);
2670 return ret;
2671}
2672
3296f71c
DT		 2673static int alps_set_protocol(struct psmouse *psmouse,
2674 struct alps_data *priv,
2675 const struct alps_protocol_info *protocol)
25bded7c 2676{
3296f71c
DT		 2677 psmouse->private = priv;
2678
2679 setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse);
2680
2681 priv->proto_version = protocol->version;
2682 priv->byte0 = protocol->byte0;
2683 priv->mask0 = protocol->mask0;
2684 priv->flags = protocol->flags;
f673ceb1 2685
7a9f73e7
KC		 2686 priv->x_max = 2000;
2687 priv->y_max = 1400;
2688 priv->x_bits = 15;
2689 priv->y_bits = 11;
2690
99df65e7 2691 switch (priv->proto_version) {
25bded7c
SF		 2692 case ALPS_PROTO_V1:
2693 case ALPS_PROTO_V2:
24af5cb9
KC		 2694 priv->hw_init = alps_hw_init_v1_v2;
2695 priv->process_packet = alps_process_packet_v1_v2;
2696 priv->set_abs_params = alps_set_abs_params_st;
95f75e91
YT		 2697 priv->x_max = 1023;
2698 priv->y_max = 767;
19556219
HG		 2699 if (dmi_check_system(alps_dmi_has_separate_stick_buttons))
2700 priv->flags |= ALPS_STICK_BITS;
25bded7c 2701 break;
fb2dd7a6 2702
25bded7c 2703 case ALPS_PROTO_V3:
24af5cb9
KC		 2704 priv->hw_init = alps_hw_init_v3;
2705 priv->process_packet = alps_process_packet_v3;
688ea364 2706 priv->set_abs_params = alps_set_abs_params_semi_mt;
f85e5001 2707 priv->decode_fields = alps_decode_pinnacle;
50e8b216
KC		 2708 priv->nibble_commands = alps_v3_nibble_commands;
2709 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
4b1af853
PR		 2710
2711 if (alps_probe_trackstick_v3_v7(psmouse,
2712 ALPS_REG_BASE_PINNACLE) < 0)
2713 priv->flags &= ~ALPS_DUALPOINT;
2714
25bded7c 2715 break;
fb2dd7a6
DT		 2716
2717 case ALPS_PROTO_V3_RUSHMORE:
2718 priv->hw_init = alps_hw_init_rushmore_v3;
2719 priv->process_packet = alps_process_packet_v3;
688ea364 2720 priv->set_abs_params = alps_set_abs_params_semi_mt;
fb2dd7a6
DT		 2721 priv->decode_fields = alps_decode_rushmore;
2722 priv->nibble_commands = alps_v3_nibble_commands;
2723 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2724 priv->x_bits = 16;
2725 priv->y_bits = 12;
3296f71c 2726
dae928ec
PR		 2727 if (alps_probe_trackstick_v3_v7(psmouse,
2728 ALPS_REG_BASE_RUSHMORE) < 0)
3296f71c
DT		 2729 priv->flags &= ~ALPS_DUALPOINT;
2730
fb2dd7a6
DT		 2731 break;
2732
25bded7c 2733 case ALPS_PROTO_V4:
24af5cb9
KC		 2734 priv->hw_init = alps_hw_init_v4;
2735 priv->process_packet = alps_process_packet_v4;
688ea364 2736 priv->set_abs_params = alps_set_abs_params_semi_mt;
50e8b216
KC		 2737 priv->nibble_commands = alps_v4_nibble_commands;
2738 priv->addr_command = PSMOUSE_CMD_DISABLE;
25bded7c 2739 break;
3296f71c 2740
75af9e56
DT		 2741 case ALPS_PROTO_V5:
2742 priv->hw_init = alps_hw_init_dolphin_v1;
ee65d4b3 2743 priv->process_packet = alps_process_touchpad_packet_v3_v5;
75af9e56 2744 priv->decode_fields = alps_decode_dolphin;
688ea364 2745 priv->set_abs_params = alps_set_abs_params_semi_mt;
75af9e56
DT		 2746 priv->nibble_commands = alps_v3_nibble_commands;
2747 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
75af9e56
DT		 2748 priv->x_bits = 23;
2749 priv->y_bits = 12;
c164c147
DT		 2750
2751 if (alps_dolphin_get_device_area(psmouse, priv))
2752 return -EIO;
2753
75af9e56 2754 break;
3296f71c 2755
95f75e91
YT		 2756 case ALPS_PROTO_V6:
2757 priv->hw_init = alps_hw_init_v6;
2758 priv->process_packet = alps_process_packet_v6;
2759 priv->set_abs_params = alps_set_abs_params_st;
2760 priv->nibble_commands = alps_v6_nibble_commands;
2761 priv->x_max = 2047;
2762 priv->y_max = 1535;
2763 break;
3296f71c 2764
3808843c
YT		 2765 case ALPS_PROTO_V7:
2766 priv->hw_init = alps_hw_init_v7;
2767 priv->process_packet = alps_process_packet_v7;
2768 priv->decode_fields = alps_decode_packet_v7;
8eccd393 2769 priv->set_abs_params = alps_set_abs_params_v7;
3808843c
YT		 2770 priv->nibble_commands = alps_v3_nibble_commands;
2771 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
c164c147
DT		 2772 priv->x_max = 0xfff;
2773 priv->y_max = 0x7ff;
3808843c
YT		 2774
2775 if (priv->fw_ver[1] != 0xba)
2776 priv->flags |= ALPS_BUTTONPAD;
3296f71c 2777
dae928ec
PR		 2778 if (alps_probe_trackstick_v3_v7(psmouse, ALPS_REG_BASE_V7) < 0)
2779 priv->flags &= ~ALPS_DUALPOINT;
2780
3808843c 2781 break;
3db5b9f7
MO		 2782
2783 case ALPS_PROTO_V8:
2784 priv->hw_init = alps_hw_init_ss4_v2;
2785 priv->process_packet = alps_process_packet_ss4_v2;
2786 priv->decode_fields = alps_decode_ss4_v2;
2787 priv->set_abs_params = alps_set_abs_params_ss4_v2;
2788 priv->nibble_commands = alps_v3_nibble_commands;
2789 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2790
2791 if (alps_set_defaults_ss4_v2(psmouse, priv))
2792 return -EIO;
2793
2794 break;
25bded7c 2795 }
3296f71c
DT		 2796
2797 return 0;
25bded7c
SF		 2798}
2799
3296f71c
DT		 2800static const struct alps_protocol_info *alps_match_table(unsigned char *e7,
2801 unsigned char *ec)
2e992cc0 2802{
b5d6b851 2803 const struct alps_model_info *model;
2e992cc0
KC		 2804 int i;
2805
b5d6b851
KC		 2806 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) {
2807 model = &alps_model_data[i];
2808
2809 if (!memcmp(e7, model->signature, sizeof(model->signature)) &&
2810 (!model->command_mode_resp ||
2811 model->command_mode_resp == ec[2])) {
2812
3296f71c 2813 return &model->protocol_info;
b5d6b851
KC		 2814 }
2815 }
2816
3296f71c 2817 return NULL;
b5d6b851
KC		 2818}
2819
2820static int alps_identify(struct psmouse *psmouse, struct alps_data *priv)
2821{
3296f71c 2822 const struct alps_protocol_info *protocol;
b5d6b851 2823 unsigned char e6[4], e7[4], ec[4];
a09221e8 2824 int error;
b5d6b851 2825
2e992cc0
KC		 2826 /*
2827 * First try "E6 report".
2828 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed.
2829 * The bits 0-2 of the first byte will be 1s if some buttons are
2830 * pressed.
2831 */
b5d6b851
KC		 2832 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
2833 PSMOUSE_CMD_SETSCALE11, e6))
2834 return -EIO;
2e992cc0 2835
b5d6b851
KC		 2836 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100))
2837 return -EINVAL;
2e992cc0
KC		 2838
2839 /*
b5d6b851
KC		 2840 * Now get the "E7" and "EC" reports. These will uniquely identify
2841 * most ALPS touchpads.
2e992cc0 2842 */
b5d6b851
KC		 2843 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
2844 PSMOUSE_CMD_SETSCALE21, e7) ||
2845 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
2846 PSMOUSE_CMD_RESET_WRAP, ec) ||
2847 alps_exit_command_mode(psmouse))
2848 return -EIO;
2e992cc0 2849
3296f71c
DT		 2850 protocol = alps_match_table(e7, ec);
2851 if (!protocol) {
2852 if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 &&
2853 ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) {
2854 protocol = &alps_v5_protocol_data;
2855 } else if (ec[0] == 0x88 &&
2856 ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) {
2857 protocol = &alps_v7_protocol_data;
2858 } else if (ec[0] == 0x88 && ec[1] == 0x08) {
2859 protocol = &alps_v3_rushmore_data;
2860 } else if (ec[0] == 0x88 && ec[1] == 0x07 &&
2861 ec[2] >= 0x90 && ec[2] <= 0x9d) {
2862 protocol = &alps_v3_protocol_data;
3db5b9f7 2863 } else if (e7[0] == 0x73 && e7[1] == 0x03 &&
697bbb36 2864 (e7[2] == 0x14 || e7[2] == 0x28)) {
aeaa881f 2865 protocol = &alps_v8_protocol_data;
3296f71c
DT		 2866 } else {
2867 psmouse_dbg(psmouse,
2868 "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec);
2869 return -EINVAL;
2870 }
f673ceb1 2871 }
2e992cc0 2872
a09221e8 2873 if (priv) {
697bbb36
MO		 2874 /* Save Device ID and Firmware version */
2875 memcpy(priv->dev_id, e7, 3);
a09221e8
DT		 2876 memcpy(priv->fw_ver, ec, 3);
2877 error = alps_set_protocol(psmouse, priv, protocol);
2878 if (error)
2879 return error;
2880 }
2e992cc0 2881
a09221e8 2882 return 0;
2e992cc0
KC		 2883}
2884
1e0c5b12
DT		 2885static int alps_reconnect(struct psmouse *psmouse)
2886{
b5d6b851 2887 struct alps_data *priv = psmouse->private;
71bb21b6 2888
1e0c5b12
DT		 2889 psmouse_reset(psmouse);
2890
b5d6b851 2891 if (alps_identify(psmouse, priv) < 0)
1e0c5b12
DT		 2892 return -1;
2893
24af5cb9 2894 return priv->hw_init(psmouse);
1da177e4
LT		 2895}
2896
2897static void alps_disconnect(struct psmouse *psmouse)
2898{
2899 struct alps_data *priv = psmouse->private;
2e5b636b 2900
1da177e4 2901 psmouse_reset(psmouse);
1d9f2626 2902 del_timer_sync(&priv->timer);
04aae283
PR		 2903 if (priv->dev2)
2904 input_unregister_device(priv->dev2);
2905 if (!IS_ERR_OR_NULL(priv->dev3))
2906 input_unregister_device(priv->dev3);
1da177e4
LT		 2907 kfree(priv);
2908}
2909
24af5cb9
KC		 2910static void alps_set_abs_params_st(struct alps_data *priv,
2911 struct input_dev *dev1)
2912{
95f75e91
YT		 2913 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0);
2914 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0);
8eccd393 2915 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
24af5cb9
KC		 2916}
2917
8eccd393
MO		 2918static void alps_set_abs_params_mt_common(struct alps_data *priv,
2919 struct input_dev *dev1)
24af5cb9 2920{
7a9f73e7
KC		 2921 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0);
2922 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0);
24af5cb9 2923
f3f33c67
HG		 2924 input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res);
2925 input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res);
2926
24af5cb9
KC		 2927 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit);
2928 set_bit(BTN_TOOL_QUADTAP, dev1->keybit);
8eccd393
MO		 2929}
2930
688ea364
HG		 2931static void alps_set_abs_params_semi_mt(struct alps_data *priv,
2932 struct input_dev *dev1)
8eccd393
MO		 2933{
2934 alps_set_abs_params_mt_common(priv, dev1);
2935 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
2936
2937 input_mt_init_slots(dev1, MAX_TOUCHES,
2938 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED |
1662c033 2939 INPUT_MT_SEMI_MT);
8eccd393
MO		 2940}
2941
2942static void alps_set_abs_params_v7(struct alps_data *priv,
2943 struct input_dev *dev1)
2944{
2945 alps_set_abs_params_mt_common(priv, dev1);
8d289842 2946 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit);
3808843c 2947
3db5b9f7
MO		 2948 input_mt_init_slots(dev1, MAX_TOUCHES,
2949 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED |
2950 INPUT_MT_TRACK);
2951
2952 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit);
2953}
2954
2955static void alps_set_abs_params_ss4_v2(struct alps_data *priv,
2956 struct input_dev *dev1)
2957{
2958 alps_set_abs_params_mt_common(priv, dev1);
2959 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
2960 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit);
3808843c 2961
8eccd393
MO		 2962 input_mt_init_slots(dev1, MAX_TOUCHES,
2963 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED |
2964 INPUT_MT_TRACK);
24af5cb9
KC		 2965}
2966
1da177e4
LT		 2967int alps_init(struct psmouse *psmouse)
2968{
a09221e8 2969 struct alps_data *priv = psmouse->private;
04aae283 2970 struct input_dev *dev1 = psmouse->dev;
a09221e8 2971 int error;
1da177e4 2972
a09221e8
DT		 2973 error = priv->hw_init(psmouse);
2974 if (error)
1da177e4
LT		 2975 goto init_fail;
2976
7105d2ea
DT		 2977 /*
2978 * Undo part of setup done for us by psmouse core since touchpad
2979 * is not a relative device.
2980 */
2981 __clear_bit(EV_REL, dev1->evbit);
2982 __clear_bit(REL_X, dev1->relbit);
2983 __clear_bit(REL_Y, dev1->relbit);
2984
2985 /*
2986 * Now set up our capabilities.
2987 */
7b19ada2
JS		 2988 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY);
2989 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH);
2990 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER);
71bb21b6
ML		 2991 dev1->keybit[BIT_WORD(BTN_LEFT)] |=
2992 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
1da177e4 2993
7b19ada2 2994 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS);
25bded7c 2995
24af5cb9 2996 priv->set_abs_params(priv, dev1);
1da177e4 2997
99df65e7 2998 if (priv->flags & ALPS_WHEEL) {
7b19ada2
JS		 2999 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL);
3000 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL);
1da177e4
LT		 3001 }
3002
99df65e7 3003 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
7b19ada2
JS		 3004 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD);
3005 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK);
1da177e4
LT		 3006 }
3007
99df65e7 3008 if (priv->flags & ALPS_FOUR_BUTTONS) {
71bb21b6
ML		 3009 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0);
3010 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1);
3011 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2);
3012 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3);
3808843c
YT		 3013 } else if (priv->flags & ALPS_BUTTONPAD) {
3014 set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit);
3015 clear_bit(BTN_RIGHT, dev1->keybit);
71bb21b6
ML		 3016 } else {
3017 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE);
3018 }
3019
dfba8600 3020 if (priv->flags & ALPS_DUALPOINT) {
04aae283
PR		 3021 struct input_dev *dev2;
3022
3023 dev2 = input_allocate_device();
3024 if (!dev2) {
3025 psmouse_err(psmouse,
3026 "failed to allocate trackstick device\n");
3027 error = -ENOMEM;
3028 goto init_fail;
3029 }
3030
3031 snprintf(priv->phys2, sizeof(priv->phys2), "%s/input1",
3032 psmouse->ps2dev.serio->phys);
3033 dev2->phys = priv->phys2;
3034
dfba8600
PR		 3035 /*
3036 * format of input device name is: "protocol vendor name"
3037 * see function psmouse_switch_protocol() in psmouse-base.c
3038 */
3039 dev2->name = "AlpsPS/2 ALPS DualPoint Stick";
04aae283
PR		 3040
3041 dev2->id.bustype = BUS_I8042;
3042 dev2->id.vendor = 0x0002;
dfba8600
PR		 3043 dev2->id.product = PSMOUSE_ALPS;
3044 dev2->id.version = priv->proto_version;
04aae283 3045 dev2->dev.parent = &psmouse->ps2dev.serio->dev;
1da177e4 3046
04aae283
PR		 3047 input_set_capability(dev2, EV_REL, REL_X);
3048 input_set_capability(dev2, EV_REL, REL_Y);
7ad8a106
BG		 3049 if (priv->flags & ALPS_DUALPOINT_WITH_PRESSURE) {
3050 input_set_capability(dev2, EV_ABS, ABS_PRESSURE);
3051 input_set_abs_params(dev2, ABS_PRESSURE, 0, 127, 0, 0);
3052 }
04aae283
PR		 3053 input_set_capability(dev2, EV_KEY, BTN_LEFT);
3054 input_set_capability(dev2, EV_KEY, BTN_RIGHT);
3055 input_set_capability(dev2, EV_KEY, BTN_MIDDLE);
1da177e4 3056
04aae283 3057 __set_bit(INPUT_PROP_POINTER, dev2->propbit);
7611392f
HG		 3058 __set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit);
3059
04aae283
PR		 3060 error = input_register_device(dev2);
3061 if (error) {
3062 psmouse_err(psmouse,
3063 "failed to register trackstick device: %d\n",
3064 error);
3065 input_free_device(dev2);
3066 goto init_fail;
3067 }
3068
3069 priv->dev2 = dev2;
3070 }
3071
3072 priv->psmouse = psmouse;
3073
3074 INIT_DELAYED_WORK(&priv->dev3_register_work,
3075 alps_register_bare_ps2_mouse);
1da177e4
LT		 3076
3077 psmouse->protocol_handler = alps_process_byte;
f0d5c6f4 3078 psmouse->poll = alps_poll;
1da177e4
LT		 3079 psmouse->disconnect = alps_disconnect;
3080 psmouse->reconnect = alps_reconnect;
99df65e7 3081 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6;
1da177e4 3082
f0d5c6f4
DT		 3083 /* We are having trouble resyncing ALPS touchpads so disable it for now */
3084 psmouse->resync_time = 0;
3085
9d720b34
PR		 3086 /* Allow 2 invalid packets without resetting device */
3087 psmouse->resetafter = psmouse->pktsize * 2;
3088
1da177e4
LT		 3089 return 0;
3090
3091init_fail:
f42649e8 3092 psmouse_reset(psmouse);
a09221e8
DT		 3093 /*
3094 * Even though we did not allocate psmouse->private we do free
3095 * it here.
3096 */
3097 kfree(psmouse->private);
1e0c5b12 3098 psmouse->private = NULL;
a09221e8 3099 return error;
1da177e4
LT		 3100}
3101
b7802c5c 3102int alps_detect(struct psmouse *psmouse, bool set_properties)
1da177e4 3103{
a09221e8
DT		 3104 struct alps_data *priv;
3105 int error;
1da177e4 3106
a09221e8
DT		 3107 error = alps_identify(psmouse, NULL);
3108 if (error)
3109 return error;
3110
3111 /*
3112 * Reset the device to make sure it is fully operational:
3113 * on some laptops, like certain Dell Latitudes, we may
3114 * fail to properly detect presence of trackstick if device
3115 * has not been reset.
3116 */
3117 psmouse_reset(psmouse);
3118
3119 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL);
3120 if (!priv)
3121 return -ENOMEM;
3122
3123 error = alps_identify(psmouse, priv);
93050db2
DT		 3124 if (error) {
3125 kfree(priv);
a09221e8 3126 return error;
93050db2 3127 }
1da177e4
LT		 3128
3129 if (set_properties) {
3130 psmouse->vendor = "ALPS";
a09221e8 3131 psmouse->name = priv->flags & ALPS_DUALPOINT ?
968ac842 3132 "DualPoint TouchPad" : "GlidePoint";
a09221e8
DT		 3133 psmouse->model = priv->proto_version;
3134 } else {
3135 /*
3136 * Destroy alps_data structure we allocated earlier since
3137 * this was just a "trial run". Otherwise we'll keep it
3138 * to be used by alps_init() which has to be called if
3139 * we succeed and set_properties is true.
3140 */
3141 kfree(priv);
3142 psmouse->private = NULL;
1da177e4 3143 }
a09221e8 3144
1da177e4
LT		 3145 return 0;
3146}
3147
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