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Input: alps - report interleaved bare PS/2 packets via dev3
[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>
23
24#include "psmouse.h"
25#include "alps.h"
26
25bded7c
SF		 27/*
28 * Definitions for ALPS version 3 and 4 command mode protocol
29 */
30#define ALPS_CMD_NIBBLE_10 0x01f2
31
cd401204
KC		 32#define ALPS_REG_BASE_RUSHMORE 0xc2c0
33#define ALPS_REG_BASE_PINNACLE 0x0000
34
25bded7c
SF		 35static const struct alps_nibble_commands alps_v3_nibble_commands[] = {
36 { PSMOUSE_CMD_SETPOLL, 0x00 }, /* 0 */
37 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */
38 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */
39 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */
40 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */
41 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */
42 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */
43 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */
44 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */
45 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */
46 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */
47 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */
48 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */
49 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */
50 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */
51 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */
52};
53
54static const struct alps_nibble_commands alps_v4_nibble_commands[] = {
55 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */
56 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */
57 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */
58 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */
59 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */
60 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */
61 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */
62 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */
63 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */
64 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */
65 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */
66 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */
67 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */
68 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */
69 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */
70 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */
71};
72
95f75e91
YT		 73static const struct alps_nibble_commands alps_v6_nibble_commands[] = {
74 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */
75 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 1 */
76 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 2 */
77 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 3 */
78 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 4 */
79 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 5 */
80 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 6 */
81 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 7 */
82 { PSMOUSE_CMD_GETID, 0x00 }, /* 8 */
83 { PSMOUSE_CMD_GETINFO, 0x00 }, /* 9 */
84 { PSMOUSE_CMD_SETRES, 0x00 }, /* a */
85 { PSMOUSE_CMD_SETRES, 0x01 }, /* b */
86 { PSMOUSE_CMD_SETRES, 0x02 }, /* c */
87 { PSMOUSE_CMD_SETRES, 0x03 }, /* d */
88 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* e */
89 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */
90};
91
25bded7c 92
71bb21b6
ML		 93#define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */
94#define ALPS_PASS 0x04 /* device has a pass-through port */
95
96#define ALPS_WHEEL 0x08 /* hardware wheel present */
97#define ALPS_FW_BK_1 0x10 /* front & back buttons present */
98#define ALPS_FW_BK_2 0x20 /* front & back buttons present */
99#define ALPS_FOUR_BUTTONS 0x40 /* 4 direction button present */
1d9f2626
SK		 100#define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with
101 6-byte ALPS packet */
3808843c 102#define ALPS_BUTTONPAD 0x200 /* device is a clickpad */
1da177e4 103
e38de678 104static const struct alps_model_info alps_model_data[] = {
8326bb57
DT		 105 { { 0x32, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Toshiba Salellite Pro M10 */
106 { { 0x33, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V1, 0x88, 0xf8, 0 } }, /* UMAX-530T */
107 { { 0x53, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
108 { { 0x53, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
109 { { 0x60, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, /* HP ze1115 */
110 { { 0x63, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
111 { { 0x63, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
112 { { 0x63, 0x02, 0x28 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Fujitsu Siemens S6010 */
113 { { 0x63, 0x02, 0x3c }, 0x00, { ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL } }, /* Toshiba Satellite S2400-103 */
114 { { 0x63, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 } }, /* NEC Versa L320 */
115 { { 0x63, 0x02, 0x64 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
116 { { 0x63, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D800 */
117 { { 0x73, 0x00, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT } }, /* ThinkPad R61 8918-5QG */
118 { { 0x73, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
119 { { 0x73, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Ahtec Laptop */
626b9da0
DT		 120
121 /*
122 * XXX This entry is suspicious. First byte has zero lower nibble,
123 * which is what a normal mouse would report. Also, the value 0x0e
124 * isn't valid per PS/2 spec.
125 */
126 { { 0x20, 0x02, 0x0e }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } },
127
8326bb57
DT		 128 { { 0x22, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } },
129 { { 0x22, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D600 */
1d9f2626 130 /* Dell Latitude E5500, E6400, E6500, Precision M4400 */
8326bb57
DT		 131 { { 0x62, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf,
132 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } },
133 { { 0x73, 0x00, 0x14 }, 0x00, { ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT } }, /* Dell XT2 */
134 { { 0x73, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS } }, /* Dell Vostro 1400 */
135 { { 0x52, 0x01, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff,
136 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, /* Toshiba Tecra A11-11L */
137 { { 0x73, 0x02, 0x64 }, 0x8a, { ALPS_PROTO_V4, 0x8f, 0x8f, 0 } },
1da177e4
LT		 138};
139
3296f71c
DT		 140static const struct alps_protocol_info alps_v3_protocol_data = {
141 ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT
142};
143
144static const struct alps_protocol_info alps_v3_rushmore_data = {
145 ALPS_PROTO_V3_RUSHMORE, 0x8f, 0x8f, ALPS_DUALPOINT
146};
147
148static const struct alps_protocol_info alps_v5_protocol_data = {
149 ALPS_PROTO_V5, 0xc8, 0xd8, 0
150};
151
152static const struct alps_protocol_info alps_v7_protocol_data = {
153 ALPS_PROTO_V7, 0x48, 0x48, ALPS_DUALPOINT
154};
155
24af5cb9
KC		 156static void alps_set_abs_params_st(struct alps_data *priv,
157 struct input_dev *dev1);
158static void alps_set_abs_params_mt(struct alps_data *priv,
159 struct input_dev *dev1);
160
d4b347b2 161/* Packet formats are described in Documentation/input/alps.txt */
1da177e4 162
99df65e7 163static bool alps_is_valid_first_byte(struct alps_data *priv,
1d9f2626
SK		 164 unsigned char data)
165{
99df65e7 166 return (data & priv->mask0) == priv->byte0;
1d9f2626
SK		 167}
168
04aae283 169static void alps_report_buttons(struct input_dev *dev1, struct input_dev *dev2,
1d9f2626
SK		 170 int left, int right, int middle)
171{
c91ed059
MB		 172 struct input_dev *dev;
173
174 /*
175 * If shared button has already been reported on the
176 * other device (dev2) then this event should be also
177 * sent through that device.
178 */
04aae283 179 dev = (dev2 && test_bit(BTN_LEFT, dev2->key)) ? dev2 : dev1;
c91ed059
MB		 180 input_report_key(dev, BTN_LEFT, left);
181
04aae283 182 dev = (dev2 && test_bit(BTN_RIGHT, dev2->key)) ? dev2 : dev1;
c91ed059
MB		 183 input_report_key(dev, BTN_RIGHT, right);
184
04aae283 185 dev = (dev2 && test_bit(BTN_MIDDLE, dev2->key)) ? dev2 : dev1;
c91ed059
MB		 186 input_report_key(dev, BTN_MIDDLE, middle);
187
188 /*
189 * Sync the _other_ device now, we'll do the first
190 * device later once we report the rest of the events.
191 */
04aae283
PR		 192 if (dev2)
193 input_sync(dev2);
1d9f2626
SK		 194}
195
25bded7c 196static void alps_process_packet_v1_v2(struct psmouse *psmouse)
1da177e4
LT		 197{
198 struct alps_data *priv = psmouse->private;
199 unsigned char *packet = psmouse->packet;
2e5b636b
DT		 200 struct input_dev *dev = psmouse->dev;
201 struct input_dev *dev2 = priv->dev2;
1da177e4 202 int x, y, z, ges, fin, left, right, middle;
c30b4c10 203 int back = 0, forward = 0;
1da177e4 204
99df65e7 205 if (priv->proto_version == ALPS_PROTO_V1) {
d2f4012f
YM		 206 left = packet[2] & 0x10;
207 right = packet[2] & 0x08;
1da177e4
LT		 208 middle = 0;
209 x = packet[1] | ((packet[0] & 0x07) << 7);
210 y = packet[4] | ((packet[3] & 0x07) << 7);
211 z = packet[5];
212 } else {
213 left = packet[3] & 1;
214 right = packet[3] & 2;
215 middle = packet[3] & 4;
216 x = packet[1] | ((packet[2] & 0x78) << (7 - 3));
217 y = packet[4] | ((packet[3] & 0x70) << (7 - 4));
218 z = packet[5];
219 }
220
99df65e7 221 if (priv->flags & ALPS_FW_BK_1) {
3c00bb96
LK		 222 back = packet[0] & 0x10;
223 forward = packet[2] & 4;
c30b4c10
ICR		 224 }
225
99df65e7 226 if (priv->flags & ALPS_FW_BK_2) {
c30b4c10
ICR		 227 back = packet[3] & 4;
228 forward = packet[2] & 4;
229 if ((middle = forward && back))
230 forward = back = 0;
231 }
232
1da177e4
LT		 233 ges = packet[2] & 1;
234 fin = packet[2] & 2;
235
99df65e7 236 if ((priv->flags & ALPS_DUALPOINT) && z == 127) {
1da177e4
LT		 237 input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x));
238 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y));
d7ed5d88 239
04aae283 240 alps_report_buttons(dev2, dev, left, right, middle);
d7ed5d88 241
1da177e4
LT		 242 input_sync(dev2);
243 return;
244 }
245
04aae283 246 alps_report_buttons(dev, dev2, left, right, middle);
d7ed5d88 247
1da177e4 248 /* Convert hardware tap to a reasonable Z value */
71bb21b6
ML		 249 if (ges && !fin)
250 z = 40;
1da177e4
LT		 251
252 /*
253 * A "tap and drag" operation is reported by the hardware as a transition
254 * from (!fin && ges) to (fin && ges). This should be translated to the
255 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually.
256 */
257 if (ges && fin && !priv->prev_fin) {
258 input_report_abs(dev, ABS_X, x);
259 input_report_abs(dev, ABS_Y, y);
260 input_report_abs(dev, ABS_PRESSURE, 0);
261 input_report_key(dev, BTN_TOOL_FINGER, 0);
262 input_sync(dev);
263 }
264 priv->prev_fin = fin;
265
71bb21b6
ML		 266 if (z > 30)
267 input_report_key(dev, BTN_TOUCH, 1);
268 if (z < 25)
269 input_report_key(dev, BTN_TOUCH, 0);
1da177e4
LT		 270
271 if (z > 0) {
272 input_report_abs(dev, ABS_X, x);
273 input_report_abs(dev, ABS_Y, y);
274 }
275
276 input_report_abs(dev, ABS_PRESSURE, z);
277 input_report_key(dev, BTN_TOOL_FINGER, z > 0);
278
99df65e7 279 if (priv->flags & ALPS_WHEEL)
e6c047b9 280 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07));
1da177e4 281
99df65e7 282 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
c30b4c10
ICR		 283 input_report_key(dev, BTN_FORWARD, forward);
284 input_report_key(dev, BTN_BACK, back);
1da177e4
LT		 285 }
286
99df65e7 287 if (priv->flags & ALPS_FOUR_BUTTONS) {
71bb21b6
ML		 288 input_report_key(dev, BTN_0, packet[2] & 4);
289 input_report_key(dev, BTN_1, packet[0] & 0x10);
290 input_report_key(dev, BTN_2, packet[3] & 4);
291 input_report_key(dev, BTN_3, packet[0] & 0x20);
292 }
293
1da177e4
LT		 294 input_sync(dev);
295}
296
ee65d4b3
YT		 297/*
298 * Process bitmap data for V5 protocols. Return value is null.
299 *
300 * The bitmaps don't have enough data to track fingers, so this function
301 * only generates points representing a bounding box of at most two contacts.
02d04254 302 * These two points are returned in fields->mt.
ee65d4b3
YT		 303 */
304static void alps_process_bitmap_dolphin(struct alps_data *priv,
02d04254 305 struct alps_fields *fields)
ee65d4b3
YT		 306{
307 int box_middle_x, box_middle_y;
308 unsigned int x_map, y_map;
309 unsigned char start_bit, end_bit;
310 unsigned char x_msb, x_lsb, y_msb, y_lsb;
311
312 x_map = fields->x_map;
313 y_map = fields->y_map;
314
315 if (!x_map || !y_map)
316 return;
317
318 /* Get Most-significant and Least-significant bit */
319 x_msb = fls(x_map);
320 x_lsb = ffs(x_map);
321 y_msb = fls(y_map);
322 y_lsb = ffs(y_map);
323
324 /* Most-significant bit should never exceed max sensor line number */
325 if (x_msb > priv->x_bits || y_msb > priv->y_bits)
326 return;
327
ee65d4b3
YT		 328 if (fields->fingers > 1) {
329 start_bit = priv->x_bits - x_msb;
330 end_bit = priv->x_bits - x_lsb;
331 box_middle_x = (priv->x_max * (start_bit + end_bit)) /
332 (2 * (priv->x_bits - 1));
333
334 start_bit = y_lsb - 1;
335 end_bit = y_msb - 1;
336 box_middle_y = (priv->y_max * (start_bit + end_bit)) /
337 (2 * (priv->y_bits - 1));
02d04254
HG		 338 fields->mt[0] = fields->st;
339 fields->mt[1].x = 2 * box_middle_x - fields->mt[0].x;
340 fields->mt[1].y = 2 * box_middle_y - fields->mt[0].y;
ee65d4b3
YT		 341 }
342}
343
036e6c7b
HG		 344static void alps_get_bitmap_points(unsigned int map,
345 struct alps_bitmap_point *low,
346 struct alps_bitmap_point *high,
347 int *fingers)
348{
349 struct alps_bitmap_point *point;
350 int i, bit, prev_bit = 0;
351
352 point = low;
353 for (i = 0; map != 0; i++, map >>= 1) {
354 bit = map & 1;
355 if (bit) {
356 if (!prev_bit) {
357 point->start_bit = i;
105affbf 358 point->num_bits = 0;
036e6c7b
HG		 359 (*fingers)++;
360 }
361 point->num_bits++;
362 } else {
363 if (prev_bit)
364 point = high;
036e6c7b
HG		 365 }
366 prev_bit = bit;
367 }
368}
369
01ce661f
SF		 370/*
371 * Process bitmap data from v3 and v4 protocols. Returns the number of
372 * fingers detected. A return value of 0 means at least one of the
373 * bitmaps was empty.
374 *
375 * The bitmaps don't have enough data to track fingers, so this function
376 * only generates points representing a bounding box of all contacts.
02d04254 377 * These points are returned in fields->mt when the return value
01ce661f
SF		 378 * is greater than 0.
379 */
7a9f73e7 380static int alps_process_bitmap(struct alps_data *priv,
02d04254 381 struct alps_fields *fields)
01ce661f 382{
036e6c7b 383 int i, fingers_x = 0, fingers_y = 0, fingers;
01ce661f
SF		 384 struct alps_bitmap_point x_low = {0,}, x_high = {0,};
385 struct alps_bitmap_point y_low = {0,}, y_high = {0,};
01ce661f 386
02d04254 387 if (!fields->x_map || !fields->y_map)
01ce661f
SF		 388 return 0;
389
02d04254
HG		 390 alps_get_bitmap_points(fields->x_map, &x_low, &x_high, &fingers_x);
391 alps_get_bitmap_points(fields->y_map, &y_low, &y_high, &fingers_y);
01ce661f
SF		 392
393 /*
394 * Fingers can overlap, so we use the maximum count of fingers
395 * on either axis as the finger count.
396 */
397 fingers = max(fingers_x, fingers_y);
398
399 /*
20bea68b
HG		 400 * If an axis reports only a single contact, we have overlapping or
401 * adjacent fingers. Divide the single contact between the two points.
01ce661f 402 */
20bea68b 403 if (fingers_x == 1) {
28835f45 404 i = (x_low.num_bits - 1) / 2;
20bea68b
HG		 405 x_low.num_bits = x_low.num_bits - i;
406 x_high.start_bit = x_low.start_bit + i;
407 x_high.num_bits = max(i, 1);
408 }
409 if (fingers_y == 1) {
28835f45 410 i = (y_low.num_bits - 1) / 2;
20bea68b
HG		 411 y_low.num_bits = y_low.num_bits - i;
412 y_high.start_bit = y_low.start_bit + i;
413 y_high.num_bits = max(i, 1);
01ce661f
SF		 414 }
415
02d04254
HG		 416 fields->mt[0].x =
417 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) /
418 (2 * (priv->x_bits - 1));
419 fields->mt[0].y =
420 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) /
421 (2 * (priv->y_bits - 1));
01ce661f 422
02d04254
HG		 423 fields->mt[1].x =
424 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) /
425 (2 * (priv->x_bits - 1));
426 fields->mt[1].y =
427 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) /
428 (2 * (priv->y_bits - 1));
01ce661f 429
40e8f53b 430 /* y-bitmap order is reversed, except on rushmore */
fb2dd7a6 431 if (priv->proto_version != ALPS_PROTO_V3_RUSHMORE) {
02d04254
HG		 432 fields->mt[0].y = priv->y_max - fields->mt[0].y;
433 fields->mt[1].y = priv->y_max - fields->mt[1].y;
40e8f53b
HG		 434 }
435
01ce661f
SF		 436 return fingers;
437}
438
cdf333ef 439static void alps_set_slot(struct input_dev *dev, int slot, int x, int y)
01ce661f
SF		 440{
441 input_mt_slot(dev, slot);
cdf333ef
HG		 442 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
443 input_report_abs(dev, ABS_MT_POSITION_X, x);
444 input_report_abs(dev, ABS_MT_POSITION_Y, y);
01ce661f
SF		 445}
446
cdf333ef 447static void alps_report_mt_data(struct psmouse *psmouse, int n)
01ce661f 448{
02d04254
HG		 449 struct alps_data *priv = psmouse->private;
450 struct input_dev *dev = psmouse->dev;
451 struct alps_fields *f = &priv->f;
cdf333ef
HG		 452 int i, slot[MAX_TOUCHES];
453
448c7f38 454 input_mt_assign_slots(dev, slot, f->mt, n, 0);
cdf333ef
HG		 455 for (i = 0; i < n; i++)
456 alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y);
02d04254 457
cdf333ef 458 input_mt_sync_frame(dev);
01ce661f
SF		 459}
460
68c21870
HG		 461static void alps_report_semi_mt_data(struct psmouse *psmouse, int fingers)
462{
463 struct alps_data *priv = psmouse->private;
464 struct input_dev *dev = psmouse->dev;
465 struct alps_fields *f = &priv->f;
466
467 /* Use st data when we don't have mt data */
468 if (fingers < 2) {
469 f->mt[0].x = f->st.x;
470 f->mt[0].y = f->st.y;
471 fingers = f->pressure > 0 ? 1 : 0;
472 }
473
99d9996c 474 alps_report_mt_data(psmouse, (fingers <= 2) ? fingers : 2);
68c21870
HG		 475
476 input_mt_report_finger_count(dev, fingers);
477
478 input_report_key(dev, BTN_LEFT, f->left);
479 input_report_key(dev, BTN_RIGHT, f->right);
480 input_report_key(dev, BTN_MIDDLE, f->middle);
481
482 input_report_abs(dev, ABS_PRESSURE, f->pressure);
483
484 input_sync(dev);
485}
486
25bded7c
SF		 487static void alps_process_trackstick_packet_v3(struct psmouse *psmouse)
488{
489 struct alps_data *priv = psmouse->private;
490 unsigned char *packet = psmouse->packet;
491 struct input_dev *dev = priv->dev2;
492 int x, y, z, left, right, middle;
493
34412ba2
PR		 494 /* It should be a DualPoint when received trackstick packet */
495 if (!(priv->flags & ALPS_DUALPOINT)) {
496 psmouse_warn(psmouse,
497 "Rejected trackstick packet from non DualPoint device");
498 return;
499 }
500
25bded7c
SF		 501 /* Sanity check packet */
502 if (!(packet[0] & 0x40)) {
503 psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n");
504 return;
505 }
506
507 /*
508 * There's a special packet that seems to indicate the end
509 * of a stream of trackstick data. Filter these out.
510 */
511 if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f)
512 return;
513
514 x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f));
515 y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f));
516 z = (packet[4] & 0x7c) >> 2;
517
518 /*
519 * The x and y values tend to be quite large, and when used
520 * alone the trackstick is difficult to use. Scale them down
521 * to compensate.
522 */
523 x /= 8;
524 y /= 8;
525
526 input_report_rel(dev, REL_X, x);
527 input_report_rel(dev, REL_Y, -y);
528
529 /*
530 * Most ALPS models report the trackstick buttons in the touchpad
531 * packets, but a few report them here. No reliable way has been
532 * found to differentiate between the models upfront, so we enable
533 * the quirk in response to seeing a button press in the trackstick
534 * packet.
535 */
536 left = packet[3] & 0x01;
537 right = packet[3] & 0x02;
538 middle = packet[3] & 0x04;
539
540 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) &&
541 (left || right || middle))
542 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS;
543
544 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) {
545 input_report_key(dev, BTN_LEFT, left);
546 input_report_key(dev, BTN_RIGHT, right);
547 input_report_key(dev, BTN_MIDDLE, middle);
548 }
549
550 input_sync(dev);
551 return;
552}
553
f85e5001
KC		 554static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p)
555{
556 f->left = !!(p[3] & 0x01);
557 f->right = !!(p[3] & 0x02);
558 f->middle = !!(p[3] & 0x04);
559
560 f->ts_left = !!(p[3] & 0x10);
561 f->ts_right = !!(p[3] & 0x20);
562 f->ts_middle = !!(p[3] & 0x40);
563}
564
38c11eaa 565static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p,
ee65d4b3 566 struct psmouse *psmouse)
f85e5001
KC		 567{
568 f->first_mp = !!(p[4] & 0x40);
569 f->is_mp = !!(p[0] & 0x40);
570
571 f->fingers = (p[5] & 0x3) + 1;
572 f->x_map = ((p[4] & 0x7e) << 8) |
573 ((p[1] & 0x7f) << 2) |
574 ((p[0] & 0x30) >> 4);
575 f->y_map = ((p[3] & 0x70) << 4) |
576 ((p[2] & 0x7f) << 1) |
577 (p[4] & 0x01);
578
02d04254 579 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) |
f85e5001 580 ((p[0] & 0x30) >> 4);
02d04254
HG		 581 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f);
582 f->pressure = p[5] & 0x7f;
f85e5001
KC		 583
584 alps_decode_buttons_v3(f, p);
38c11eaa
HG		 585
586 return 0;
f85e5001
KC		 587}
588
38c11eaa 589static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p,
ee65d4b3 590 struct psmouse *psmouse)
1302bac3 591{
ee65d4b3 592 alps_decode_pinnacle(f, p, psmouse);
1302bac3 593
f105e34a
YT		 594 /* Rushmore's packet decode has a bit difference with Pinnacle's */
595 f->is_mp = !!(p[5] & 0x40);
596 f->fingers = max((p[5] & 0x3), ((p[5] >> 2) & 0x3)) + 1;
1302bac3
KC		 597 f->x_map |= (p[5] & 0x10) << 11;
598 f->y_map |= (p[5] & 0x20) << 6;
38c11eaa
HG		 599
600 return 0;
1302bac3
KC		 601}
602
38c11eaa 603static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p,
ee65d4b3 604 struct psmouse *psmouse)
75af9e56 605{
ee65d4b3
YT		 606 u64 palm_data = 0;
607 struct alps_data *priv = psmouse->private;
608
75af9e56
DT		 609 f->first_mp = !!(p[0] & 0x02);
610 f->is_mp = !!(p[0] & 0x20);
611
ee65d4b3 612 if (!f->is_mp) {
02d04254
HG		 613 f->st.x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7));
614 f->st.y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3));
615 f->pressure = (p[0] & 4) ? 0 : p[5] & 0x7f;
ee65d4b3
YT		 616 alps_decode_buttons_v3(f, p);
617 } else {
618 f->fingers = ((p[0] & 0x6) >> 1 |
75af9e56 619 (p[0] & 0x10) >> 2);
75af9e56 620
ee65d4b3
YT		 621 palm_data = (p[1] & 0x7f) |
622 ((p[2] & 0x7f) << 7) |
623 ((p[4] & 0x7f) << 14) |
624 ((p[5] & 0x7f) << 21) |
625 ((p[3] & 0x07) << 28) |
626 (((u64)p[3] & 0x70) << 27) |
627 (((u64)p[0] & 0x01) << 34);
628
629 /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */
630 f->y_map = palm_data & (BIT(priv->y_bits) - 1);
631
632 /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */
633 f->x_map = (palm_data >> priv->y_bits) &
634 (BIT(priv->x_bits) - 1);
635 }
38c11eaa
HG		 636
637 return 0;
75af9e56
DT		 638}
639
ee65d4b3 640static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse)
25bded7c
SF		 641{
642 struct alps_data *priv = psmouse->private;
643 unsigned char *packet = psmouse->packet;
25bded7c 644 struct input_dev *dev2 = priv->dev2;
02d04254
HG		 645 struct alps_fields *f = &priv->f;
646 int fingers = 0;
647
648 memset(f, 0, sizeof(*f));
f85e5001 649
02d04254 650 priv->decode_fields(f, packet, psmouse);
25bded7c
SF		 651
652 /*
01ce661f
SF		 653 * There's no single feature of touchpad position and bitmap packets
654 * that can be used to distinguish between them. We rely on the fact
655 * that a bitmap packet should always follow a position packet with
656 * bit 6 of packet[4] set.
25bded7c
SF		 657 */
658 if (priv->multi_packet) {
25bded7c
SF		 659 /*
660 * Sometimes a position packet will indicate a multi-packet
661 * sequence, but then what follows is another position
662 * packet. Check for this, and when it happens process the
663 * position packet as usual.
664 */
02d04254
HG		 665 if (f->is_mp) {
666 fingers = f->fingers;
fb2dd7a6
DT		 667 if (priv->proto_version == ALPS_PROTO_V3 ||
668 priv->proto_version == ALPS_PROTO_V3_RUSHMORE) {
02d04254 669 if (alps_process_bitmap(priv, f) == 0)
20bea68b 670 fingers = 0; /* Use st data */
ee65d4b3
YT		 671
672 /* Now process position packet */
02d04254 673 priv->decode_fields(f, priv->multi_data,
ee65d4b3
YT		 674 psmouse);
675 } else {
676 /*
677 * Because Dolphin uses position packet's
678 * coordinate data as Pt1 and uses it to
679 * calculate Pt2, so we need to do position
680 * packet decode first.
681 */
02d04254 682 priv->decode_fields(f, priv->multi_data,
ee65d4b3
YT		 683 psmouse);
684
685 /*
686 * Since Dolphin's finger number is reliable,
687 * there is no need to compare with bmap_fn.
688 */
02d04254 689 alps_process_bitmap_dolphin(priv, f);
ee65d4b3 690 }
01ce661f
SF		 691 } else {
692 priv->multi_packet = 0;
25bded7c
SF		 693 }
694 }
695
01ce661f
SF		 696 /*
697 * Bit 6 of byte 0 is not usually set in position packets. The only
698 * times it seems to be set is in situations where the data is
699 * suspect anyway, e.g. a palm resting flat on the touchpad. Given
700 * this combined with the fact that this bit is useful for filtering
701 * out misidentified bitmap packets, we reject anything with this
702 * bit set.
703 */
02d04254 704 if (f->is_mp)
01ce661f
SF		 705 return;
706
02d04254 707 if (!priv->multi_packet && f->first_mp) {
25bded7c 708 priv->multi_packet = 1;
01ce661f
SF		 709 memcpy(priv->multi_data, packet, sizeof(priv->multi_data));
710 return;
711 }
712
713 priv->multi_packet = 0;
25bded7c 714
25bded7c
SF		 715 /*
716 * Sometimes the hardware sends a single packet with z = 0
717 * in the middle of a stream. Real releases generate packets
718 * with x, y, and z all zero, so these seem to be flukes.
719 * Ignore them.
720 */
02d04254 721 if (f->st.x && f->st.y && !f->pressure)
25bded7c
SF		 722 return;
723
68c21870 724 alps_report_semi_mt_data(psmouse, fingers);
25bded7c 725
34412ba2
PR		 726 if ((priv->flags & ALPS_DUALPOINT) &&
727 !(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) {
02d04254
HG		 728 input_report_key(dev2, BTN_LEFT, f->ts_left);
729 input_report_key(dev2, BTN_RIGHT, f->ts_right);
730 input_report_key(dev2, BTN_MIDDLE, f->ts_middle);
25bded7c
SF		 731 input_sync(dev2);
732 }
733}
734
735static void alps_process_packet_v3(struct psmouse *psmouse)
736{
737 unsigned char *packet = psmouse->packet;
738
739 /*
740 * v3 protocol packets come in three types, two representing
741 * touchpad data and one representing trackstick data.
742 * Trackstick packets seem to be distinguished by always
743 * having 0x3f in the last byte. This value has never been
744 * observed in the last byte of either of the other types
745 * of packets.
746 */
747 if (packet[5] == 0x3f) {
748 alps_process_trackstick_packet_v3(psmouse);
749 return;
750 }
751
ee65d4b3 752 alps_process_touchpad_packet_v3_v5(psmouse);
25bded7c
SF		 753}
754
95f75e91
YT		 755static void alps_process_packet_v6(struct psmouse *psmouse)
756{
757 struct alps_data *priv = psmouse->private;
758 unsigned char *packet = psmouse->packet;
759 struct input_dev *dev = psmouse->dev;
760 struct input_dev *dev2 = priv->dev2;
761 int x, y, z, left, right, middle;
762
763 /*
764 * We can use Byte5 to distinguish if the packet is from Touchpad
765 * or Trackpoint.
766 * Touchpad: 0 - 0x7E
767 * Trackpoint: 0x7F
768 */
769 if (packet[5] == 0x7F) {
770 /* It should be a DualPoint when received Trackpoint packet */
34412ba2
PR		 771 if (!(priv->flags & ALPS_DUALPOINT)) {
772 psmouse_warn(psmouse,
773 "Rejected trackstick packet from non DualPoint device");
95f75e91 774 return;
34412ba2 775 }
95f75e91
YT		 776
777 /* Trackpoint packet */
778 x = packet[1] | ((packet[3] & 0x20) << 2);
779 y = packet[2] | ((packet[3] & 0x40) << 1);
780 z = packet[4];
781 left = packet[3] & 0x01;
782 right = packet[3] & 0x02;
783 middle = packet[3] & 0x04;
784
785 /* To prevent the cursor jump when finger lifted */
786 if (x == 0x7F && y == 0x7F && z == 0x7F)
787 x = y = z = 0;
788
789 /* Divide 4 since trackpoint's speed is too fast */
790 input_report_rel(dev2, REL_X, (char)x / 4);
791 input_report_rel(dev2, REL_Y, -((char)y / 4));
792
793 input_report_key(dev2, BTN_LEFT, left);
794 input_report_key(dev2, BTN_RIGHT, right);
795 input_report_key(dev2, BTN_MIDDLE, middle);
796
797 input_sync(dev2);
798 return;
799 }
800
801 /* Touchpad packet */
802 x = packet[1] | ((packet[3] & 0x78) << 4);
803 y = packet[2] | ((packet[4] & 0x78) << 4);
804 z = packet[5];
805 left = packet[3] & 0x01;
806 right = packet[3] & 0x02;
807
808 if (z > 30)
809 input_report_key(dev, BTN_TOUCH, 1);
810 if (z < 25)
811 input_report_key(dev, BTN_TOUCH, 0);
812
813 if (z > 0) {
814 input_report_abs(dev, ABS_X, x);
815 input_report_abs(dev, ABS_Y, y);
816 }
817
818 input_report_abs(dev, ABS_PRESSURE, z);
819 input_report_key(dev, BTN_TOOL_FINGER, z > 0);
820
821 /* v6 touchpad does not have middle button */
822 input_report_key(dev, BTN_LEFT, left);
823 input_report_key(dev, BTN_RIGHT, right);
824
825 input_sync(dev);
826}
827
25bded7c
SF		 828static void alps_process_packet_v4(struct psmouse *psmouse)
829{
3b7e09fa 830 struct alps_data *priv = psmouse->private;
25bded7c 831 unsigned char *packet = psmouse->packet;
02d04254 832 struct alps_fields *f = &priv->f;
68c21870 833 int offset;
3b7e09fa
GP		 834
835 /*
836 * v4 has a 6-byte encoding for bitmap data, but this data is
837 * broken up between 3 normal packets. Use priv->multi_packet to
838 * track our position in the bitmap packet.
839 */
840 if (packet[6] & 0x40) {
841 /* sync, reset position */
842 priv->multi_packet = 0;
843 }
844
845 if (WARN_ON_ONCE(priv->multi_packet > 2))
846 return;
847
848 offset = 2 * priv->multi_packet;
849 priv->multi_data[offset] = packet[6];
850 priv->multi_data[offset + 1] = packet[7];
851
852 if (++priv->multi_packet > 2) {
853 priv->multi_packet = 0;
854
02d04254 855 f->x_map = ((priv->multi_data[2] & 0x1f) << 10) |
3b7e09fa
GP		 856 ((priv->multi_data[3] & 0x60) << 3) |
857 ((priv->multi_data[0] & 0x3f) << 2) |
858 ((priv->multi_data[1] & 0x60) >> 5);
02d04254 859 f->y_map = ((priv->multi_data[5] & 0x01) << 10) |
3b7e09fa
GP		 860 ((priv->multi_data[3] & 0x1f) << 5) |
861 (priv->multi_data[1] & 0x1f);
862
02d04254 863 f->fingers = alps_process_bitmap(priv, f);
3b7e09fa 864 }
25bded7c 865
b0cfb794
AB		 866 f->left = !!(packet[4] & 0x01);
867 f->right = !!(packet[4] & 0x02);
25bded7c 868
02d04254
HG		 869 f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) |
870 ((packet[0] & 0x30) >> 4);
871 f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f);
872 f->pressure = packet[5] & 0x7f;
25bded7c 873
68c21870 874 alps_report_semi_mt_data(psmouse, f->fingers);
25bded7c
SF		 875}
876
3808843c
YT		 877static bool alps_is_valid_package_v7(struct psmouse *psmouse)
878{
879 switch (psmouse->pktcnt) {
880 case 3:
881 return (psmouse->packet[2] & 0x40) == 0x40;
882 case 4:
883 return (psmouse->packet[3] & 0x48) == 0x48;
884 case 6:
885 return (psmouse->packet[5] & 0x40) == 0x00;
886 }
887 return true;
888}
889
890static unsigned char alps_get_packet_id_v7(char *byte)
891{
892 unsigned char packet_id;
893
894 if (byte[4] & 0x40)
895 packet_id = V7_PACKET_ID_TWO;
896 else if (byte[4] & 0x01)
897 packet_id = V7_PACKET_ID_MULTI;
898 else if ((byte[0] & 0x10) && !(byte[4] & 0x43))
899 packet_id = V7_PACKET_ID_NEW;
900 else if (byte[1] == 0x00 && byte[4] == 0x00)
901 packet_id = V7_PACKET_ID_IDLE;
902 else
903 packet_id = V7_PACKET_ID_UNKNOWN;
904
905 return packet_id;
906}
907
908static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt,
909 unsigned char *pkt,
910 unsigned char pkt_id)
911{
912 mt[0].x = ((pkt[2] & 0x80) << 4);
913 mt[0].x |= ((pkt[2] & 0x3F) << 5);
914 mt[0].x |= ((pkt[3] & 0x30) >> 1);
915 mt[0].x |= (pkt[3] & 0x07);
916 mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07);
917
918 mt[1].x = ((pkt[3] & 0x80) << 4);
919 mt[1].x |= ((pkt[4] & 0x80) << 3);
920 mt[1].x |= ((pkt[4] & 0x3F) << 4);
921 mt[1].y = ((pkt[5] & 0x80) << 3);
922 mt[1].y |= ((pkt[5] & 0x3F) << 4);
923
924 switch (pkt_id) {
925 case V7_PACKET_ID_TWO:
926 mt[1].x &= ~0x000F;
927 mt[1].y |= 0x000F;
928 break;
929
930 case V7_PACKET_ID_MULTI:
931 mt[1].x &= ~0x003F;
932 mt[1].y &= ~0x0020;
933 mt[1].y |= ((pkt[4] & 0x02) << 4);
934 mt[1].y |= 0x001F;
935 break;
936
937 case V7_PACKET_ID_NEW:
938 mt[1].x &= ~0x003F;
939 mt[1].x |= (pkt[0] & 0x20);
940 mt[1].y |= 0x000F;
941 break;
942 }
943
944 mt[0].y = 0x7FF - mt[0].y;
945 mt[1].y = 0x7FF - mt[1].y;
946}
947
948static int alps_get_mt_count(struct input_mt_pos *mt)
949{
7091c443 950 int i, fingers = 0;
3808843c 951
7091c443
HG		 952 for (i = 0; i < MAX_TOUCHES; i++) {
953 if (mt[i].x != 0 || mt[i].y != 0)
954 fingers++;
955 }
3808843c 956
7091c443 957 return fingers;
3808843c
YT		 958}
959
960static int alps_decode_packet_v7(struct alps_fields *f,
961 unsigned char *p,
962 struct psmouse *psmouse)
963{
d27eb793 964 struct alps_data *priv = psmouse->private;
3808843c
YT		 965 unsigned char pkt_id;
966
967 pkt_id = alps_get_packet_id_v7(p);
968 if (pkt_id == V7_PACKET_ID_IDLE)
969 return 0;
970 if (pkt_id == V7_PACKET_ID_UNKNOWN)
971 return -1;
8b238115
HG		 972 /*
973 * NEW packets are send to indicate a discontinuity in the finger
974 * coordinate reporting. Specifically a finger may have moved from
975 * slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for
976 * us.
977 *
978 * NEW packets have 3 problems:
979 * 1) They do not contain middle / right button info (on non clickpads)
980 * this can be worked around by preserving the old button state
981 * 2) They do not contain an accurate fingercount, and they are
982 * typically send when the number of fingers changes. We cannot use
983 * the old finger count as that may mismatch with the amount of
984 * touch coordinates we've available in the NEW packet
985 * 3) Their x data for the second touch is inaccurate leading to
986 * a possible jump of the x coordinate by 16 units when the first
987 * non NEW packet comes in
988 * Since problems 2 & 3 cannot be worked around, just ignore them.
989 */
990 if (pkt_id == V7_PACKET_ID_NEW)
991 return 1;
3808843c
YT		 992
993 alps_get_finger_coordinate_v7(f->mt, p, pkt_id);
994
3808843c
YT		 995 if (pkt_id == V7_PACKET_ID_TWO)
996 f->fingers = alps_get_mt_count(f->mt);
8b238115 997 else /* pkt_id == V7_PACKET_ID_MULTI */
3808843c
YT		 998 f->fingers = 3 + (p[5] & 0x03);
999
d27eb793
HG		 1000 f->left = (p[0] & 0x80) >> 7;
1001 if (priv->flags & ALPS_BUTTONPAD) {
1002 if (p[0] & 0x20)
1003 f->fingers++;
1004 if (p[0] & 0x10)
1005 f->fingers++;
1006 } else {
1007 f->right = (p[0] & 0x20) >> 5;
1008 f->middle = (p[0] & 0x10) >> 4;
1009 }
1010
7091c443
HG		 1011 /* Sometimes a single touch is reported in mt[1] rather then mt[0] */
1012 if (f->fingers == 1 && f->mt[0].x == 0 && f->mt[0].y == 0) {
1013 f->mt[0].x = f->mt[1].x;
1014 f->mt[0].y = f->mt[1].y;
1015 f->mt[1].x = 0;
1016 f->mt[1].y = 0;
1017 }
1018
3808843c
YT		 1019 return 0;
1020}
1021
1022static void alps_process_trackstick_packet_v7(struct psmouse *psmouse)
1023{
1024 struct alps_data *priv = psmouse->private;
1025 unsigned char *packet = psmouse->packet;
1026 struct input_dev *dev2 = priv->dev2;
1027 int x, y, z, left, right, middle;
1028
34412ba2
PR		 1029 /* It should be a DualPoint when received trackstick packet */
1030 if (!(priv->flags & ALPS_DUALPOINT)) {
1031 psmouse_warn(psmouse,
1032 "Rejected trackstick packet from non DualPoint device");
1033 return;
1034 }
1035
3808843c
YT		 1036 x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2);
1037 y = (packet[3] & 0x07) | (packet[4] & 0xb8) |
1038 ((packet[3] & 0x20) << 1);
1039 z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1);
1040
1041 left = (packet[1] & 0x01);
1042 right = (packet[1] & 0x02) >> 1;
1043 middle = (packet[1] & 0x04) >> 2;
1044
1045 /* Divide 2 since trackpoint's speed is too fast */
1046 input_report_rel(dev2, REL_X, (char)x / 2);
1047 input_report_rel(dev2, REL_Y, -((char)y / 2));
1048
1049 input_report_key(dev2, BTN_LEFT, left);
1050 input_report_key(dev2, BTN_RIGHT, right);
1051 input_report_key(dev2, BTN_MIDDLE, middle);
1052
1053 input_sync(dev2);
1054}
1055
1056static void alps_process_touchpad_packet_v7(struct psmouse *psmouse)
1057{
1058 struct alps_data *priv = psmouse->private;
1059 struct input_dev *dev = psmouse->dev;
1060 struct alps_fields *f = &priv->f;
1061
1062 memset(f, 0, sizeof(*f));
1063
1064 if (priv->decode_fields(f, psmouse->packet, psmouse))
1065 return;
1066
1067 alps_report_mt_data(psmouse, alps_get_mt_count(f->mt));
1068
1069 input_mt_report_finger_count(dev, f->fingers);
1070
1071 input_report_key(dev, BTN_LEFT, f->left);
1072 input_report_key(dev, BTN_RIGHT, f->right);
1073 input_report_key(dev, BTN_MIDDLE, f->middle);
1074
1075 input_sync(dev);
1076}
1077
1078static void alps_process_packet_v7(struct psmouse *psmouse)
1079{
1080 unsigned char *packet = psmouse->packet;
1081
1082 if (packet[0] == 0x48 && (packet[4] & 0x47) == 0x06)
1083 alps_process_trackstick_packet_v7(psmouse);
1084 else
1085 alps_process_touchpad_packet_v7(psmouse);
1086}
1087
04aae283
PR		 1088static DEFINE_MUTEX(alps_mutex);
1089
1090static void alps_register_bare_ps2_mouse(struct work_struct *work)
1091{
1092 struct alps_data *priv =
1093 container_of(work, struct alps_data, dev3_register_work.work);
1094 struct psmouse *psmouse = priv->psmouse;
1095 struct input_dev *dev3;
1096 int error = 0;
1097
1098 mutex_lock(&alps_mutex);
1099
1100 if (priv->dev3)
1101 goto out;
1102
1103 dev3 = input_allocate_device();
1104 if (!dev3) {
1105 psmouse_err(psmouse, "failed to allocate secondary device\n");
1106 error = -ENOMEM;
1107 goto out;
1108 }
1109
1110 snprintf(priv->phys3, sizeof(priv->phys3), "%s/%s",
1111 psmouse->ps2dev.serio->phys,
1112 (priv->dev2 ? "input2" : "input1"));
1113 dev3->phys = priv->phys3;
1114
1115 /*
1116 * format of input device name is: "protocol vendor name"
1117 * see function psmouse_switch_protocol() in psmouse-base.c
1118 */
1119 dev3->name = "PS/2 ALPS Mouse";
1120
1121 dev3->id.bustype = BUS_I8042;
1122 dev3->id.vendor = 0x0002;
1123 dev3->id.product = PSMOUSE_PS2;
1124 dev3->id.version = 0x0000;
1125 dev3->dev.parent = &psmouse->ps2dev.serio->dev;
1126
1127 input_set_capability(dev3, EV_REL, REL_X);
1128 input_set_capability(dev3, EV_REL, REL_Y);
1129 input_set_capability(dev3, EV_KEY, BTN_LEFT);
1130 input_set_capability(dev3, EV_KEY, BTN_RIGHT);
1131 input_set_capability(dev3, EV_KEY, BTN_MIDDLE);
1132
1133 __set_bit(INPUT_PROP_POINTER, dev3->propbit);
1134
1135 error = input_register_device(dev3);
1136 if (error) {
1137 psmouse_err(psmouse,
1138 "failed to register secondary device: %d\n",
1139 error);
1140 input_free_device(dev3);
1141 goto out;
1142 }
1143
1144 priv->dev3 = dev3;
1145
1146out:
1147 /*
1148 * Save the error code so that we can detect that we
1149 * already tried to create the device.
1150 */
1151 if (error)
1152 priv->dev3 = ERR_PTR(error);
1153
1154 mutex_unlock(&alps_mutex);
1155}
1156
59c30afb 1157static void alps_report_bare_ps2_packet(struct psmouse *psmouse,
1d9f2626
SK		 1158 unsigned char packet[],
1159 bool report_buttons)
1160{
59c30afb
HG		 1161 struct alps_data *priv = psmouse->private;
1162 struct input_dev *dev;
1163
1164 if (unlikely(IS_ERR_OR_NULL(priv->dev3))) {
1165 /* Register dev3 mouse if we received PS/2 packet first time */
1166 if (!IS_ERR(priv->dev3))
1167 psmouse_queue_work(psmouse, &priv->dev3_register_work,
1168 0);
1169 return;
1170 } else {
1171 dev = priv->dev3;
1172 }
1173
1d9f2626 1174 if (report_buttons)
04aae283 1175 alps_report_buttons(dev, NULL,
1d9f2626
SK		 1176 packet[0] & 1, packet[0] & 2, packet[0] & 4);
1177
04aae283 1178 input_report_rel(dev, REL_X,
1d9f2626 1179 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0);
04aae283 1180 input_report_rel(dev, REL_Y,
1d9f2626
SK		 1181 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0);
1182
04aae283 1183 input_sync(dev);
1d9f2626
SK		 1184}
1185
1186static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse)
1187{
1188 struct alps_data *priv = psmouse->private;
1189
1190 if (psmouse->pktcnt < 6)
1191 return PSMOUSE_GOOD_DATA;
1192
1193 if (psmouse->pktcnt == 6) {
1194 /*
1195 * Start a timer to flush the packet if it ends up last
1196 * 6-byte packet in the stream. Timer needs to fire
1197 * psmouse core times out itself. 20 ms should be enough
1198 * to decide if we are getting more data or not.
1199 */
1200 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20));
1201 return PSMOUSE_GOOD_DATA;
1202 }
1203
1204 del_timer(&priv->timer);
1205
1206 if (psmouse->packet[6] & 0x80) {
1207
1208 /*
1209 * Highest bit is set - that means we either had
1210 * complete ALPS packet and this is start of the
1211 * next packet or we got garbage.
1212 */
1213
1214 if (((psmouse->packet[3] |
1215 psmouse->packet[4] |
1216 psmouse->packet[5]) & 0x80) ||
99df65e7 1217 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) {
b5d21704 1218 psmouse_dbg(psmouse,
3b112923
AS		 1219 "refusing packet %4ph (suspected interleaved ps/2)\n",
1220 psmouse->packet + 3);
1d9f2626
SK		 1221 return PSMOUSE_BAD_DATA;
1222 }
1223
24af5cb9 1224 priv->process_packet(psmouse);
1d9f2626
SK		 1225
1226 /* Continue with the next packet */
1227 psmouse->packet[0] = psmouse->packet[6];
1228 psmouse->pktcnt = 1;
1229
1230 } else {
1231
1232 /*
1233 * High bit is 0 - that means that we indeed got a PS/2
1234 * packet in the middle of ALPS packet.
1235 *
1236 * There is also possibility that we got 6-byte ALPS
1237 * packet followed by 3-byte packet from trackpoint. We
1238 * can not distinguish between these 2 scenarios but
b5d21704 1239 * because the latter is unlikely to happen in course of
1d9f2626
SK		 1240 * normal operation (user would need to press all
1241 * buttons on the pad and start moving trackpoint
1242 * without touching the pad surface) we assume former.
1243 * Even if we are wrong the wost thing that would happen
1244 * the cursor would jump but we should not get protocol
b5d21704 1245 * de-synchronization.
1d9f2626
SK		 1246 */
1247
59c30afb
HG		 1248 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3],
1249 false);
1d9f2626
SK		 1250
1251 /*
1252 * Continue with the standard ALPS protocol handling,
1253 * but make sure we won't process it as an interleaved
1254 * packet again, which may happen if all buttons are
1255 * pressed. To avoid this let's reset the 4th bit which
1256 * is normally 1.
1257 */
1258 psmouse->packet[3] = psmouse->packet[6] & 0xf7;
1259 psmouse->pktcnt = 4;
1260 }
1261
1262 return PSMOUSE_GOOD_DATA;
1263}
1264
1265static void alps_flush_packet(unsigned long data)
1266{
1267 struct psmouse *psmouse = (struct psmouse *)data;
24af5cb9 1268 struct alps_data *priv = psmouse->private;
1d9f2626
SK		 1269
1270 serio_pause_rx(psmouse->ps2dev.serio);
1271
b46615fe 1272 if (psmouse->pktcnt == psmouse->pktsize) {
1d9f2626
SK		 1273
1274 /*
1275 * We did not any more data in reasonable amount of time.
1276 * Validate the last 3 bytes and process as a standard
1277 * ALPS packet.
1278 */
1279 if ((psmouse->packet[3] |
1280 psmouse->packet[4] |
1281 psmouse->packet[5]) & 0x80) {
b5d21704 1282 psmouse_dbg(psmouse,
3b112923
AS		 1283 "refusing packet %3ph (suspected interleaved ps/2)\n",
1284 psmouse->packet + 3);
1d9f2626 1285 } else {
24af5cb9 1286 priv->process_packet(psmouse);
1d9f2626
SK		 1287 }
1288 psmouse->pktcnt = 0;
1289 }
1290
1291 serio_continue_rx(psmouse->ps2dev.serio);
1292}
1293
7d12e780 1294static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
1da177e4
LT		 1295{
1296 struct alps_data *priv = psmouse->private;
1297
4ab8f7f3
PR		 1298 /*
1299 * Check if we are dealing with a bare PS/2 packet, presumably from
1300 * a device connected to the external PS/2 port. Because bare PS/2
1301 * protocol does not have enough constant bits to self-synchronize
1302 * properly we only do this if the device is fully synchronized.
1303 */
1304 if (!psmouse->out_of_sync_cnt && (psmouse->packet[0] & 0xc8) == 0x08) {
1da177e4 1305 if (psmouse->pktcnt == 3) {
59c30afb
HG		 1306 alps_report_bare_ps2_packet(psmouse, psmouse->packet,
1307 true);
1da177e4
LT		 1308 return PSMOUSE_FULL_PACKET;
1309 }
1310 return PSMOUSE_GOOD_DATA;
1311 }
1312
1d9f2626
SK		 1313 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */
1314
99df65e7 1315 if ((priv->flags & ALPS_PS2_INTERLEAVED) &&
1d9f2626
SK		 1316 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) {
1317 return alps_handle_interleaved_ps2(psmouse);
1318 }
1319
99df65e7 1320 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) {
b5d21704
DT		 1321 psmouse_dbg(psmouse,
1322 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n",
99df65e7 1323 psmouse->packet[0], priv->mask0, priv->byte0);
1da177e4 1324 return PSMOUSE_BAD_DATA;
1d9f2626 1325 }
1da177e4 1326
b46615fe 1327 /* Bytes 2 - pktsize should have 0 in the highest bit */
a7ef82ae 1328 if (priv->proto_version < ALPS_PROTO_V5 &&
75af9e56 1329 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize &&
1d9f2626 1330 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) {
b5d21704
DT		 1331 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
1332 psmouse->pktcnt - 1,
1333 psmouse->packet[psmouse->pktcnt - 1]);
a7ef82ae 1334
fb2dd7a6 1335 if (priv->proto_version == ALPS_PROTO_V3_RUSHMORE &&
a7ef82ae
PR		 1336 psmouse->pktcnt == psmouse->pktsize) {
1337 /*
1338 * Some Dell boxes, such as Latitude E6440 or E7440
1339 * with closed lid, quite often smash last byte of
1340 * otherwise valid packet with 0xff. Given that the
1341 * next packet is very likely to be valid let's
1342 * report PSMOUSE_FULL_PACKET but not process data,
1343 * rather than reporting PSMOUSE_BAD_DATA and
1344 * filling the logs.
1345 */
1346 return PSMOUSE_FULL_PACKET;
1347 }
1348
1da177e4 1349 return PSMOUSE_BAD_DATA;
1d9f2626 1350 }
1da177e4 1351
3808843c
YT		 1352 if (priv->proto_version == ALPS_PROTO_V7 &&
1353 !alps_is_valid_package_v7(psmouse)) {
1354 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
1355 psmouse->pktcnt - 1,
1356 psmouse->packet[psmouse->pktcnt - 1]);
1357 return PSMOUSE_BAD_DATA;
1358 }
1359
b46615fe 1360 if (psmouse->pktcnt == psmouse->pktsize) {
24af5cb9 1361 priv->process_packet(psmouse);
1da177e4
LT		 1362 return PSMOUSE_FULL_PACKET;
1363 }
1364
1365 return PSMOUSE_GOOD_DATA;
1366}
1367
25bded7c
SF		 1368static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble)
1369{
1370 struct ps2dev *ps2dev = &psmouse->ps2dev;
1371 struct alps_data *priv = psmouse->private;
1372 int command;
1373 unsigned char *param;
1374 unsigned char dummy[4];
1375
1376 BUG_ON(nibble > 0xf);
1377
1378 command = priv->nibble_commands[nibble].command;
1379 param = (command & 0x0f00) ?
1380 dummy : (unsigned char *)&priv->nibble_commands[nibble].data;
1381
1382 if (ps2_command(ps2dev, param, command))
1383 return -1;
1384
1385 return 0;
1386}
1387
1388static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr)
1389{
1390 struct ps2dev *ps2dev = &psmouse->ps2dev;
1391 struct alps_data *priv = psmouse->private;
1392 int i, nibble;
1393
1394 if (ps2_command(ps2dev, NULL, priv->addr_command))
1395 return -1;
1396
1397 for (i = 12; i >= 0; i -= 4) {
1398 nibble = (addr >> i) & 0xf;
1399 if (alps_command_mode_send_nibble(psmouse, nibble))
1400 return -1;
1401 }
1402
1403 return 0;
1404}
1405
1406static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
1407{
1408 struct ps2dev *ps2dev = &psmouse->ps2dev;
1409 unsigned char param[4];
1410
1411 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1412 return -1;
1413
1414 /*
1415 * The address being read is returned in the first two bytes
1416 * of the result. Check that this address matches the expected
1417 * address.
1418 */
1419 if (addr != ((param[0] << 8) | param[1]))
1420 return -1;
1421
1422 return param[2];
1423}
1424
1425static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
1426{
1427 if (alps_command_mode_set_addr(psmouse, addr))
1428 return -1;
1429 return __alps_command_mode_read_reg(psmouse, addr);
1430}
1431
1432static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value)
1433{
1434 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf))
1435 return -1;
1436 if (alps_command_mode_send_nibble(psmouse, value & 0xf))
1437 return -1;
1438 return 0;
1439}
1440
1441static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr,
1442 u8 value)
1443{
1444 if (alps_command_mode_set_addr(psmouse, addr))
1445 return -1;
1446 return __alps_command_mode_write_reg(psmouse, value);
1447}
1448
24ba9707
KC		 1449static int alps_rpt_cmd(struct psmouse *psmouse, int init_command,
1450 int repeated_command, unsigned char *param)
1451{
1452 struct ps2dev *ps2dev = &psmouse->ps2dev;
1453
1454 param[0] = 0;
1455 if (init_command && ps2_command(ps2dev, param, init_command))
1456 return -EIO;
1457
1458 if (ps2_command(ps2dev, NULL, repeated_command) ||
1459 ps2_command(ps2dev, NULL, repeated_command) ||
1460 ps2_command(ps2dev, NULL, repeated_command))
1461 return -EIO;
1462
1463 param[0] = param[1] = param[2] = 0xff;
1464 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1465 return -EIO;
1466
39fbe585
DT		 1467 psmouse_dbg(psmouse, "%2.2X report: %3ph\n",
1468 repeated_command, param);
24ba9707
KC		 1469 return 0;
1470}
1471
3808843c
YT		 1472static bool alps_check_valid_firmware_id(unsigned char id[])
1473{
1474 if (id[0] == 0x73)
1475 return true;
1476
1477 if (id[0] == 0x88 &&
1478 (id[1] == 0x07 ||
1479 id[1] == 0x08 ||
1480 (id[1] & 0xf0) == 0xb0 ||
1481 (id[1] & 0xf0) == 0xc0)) {
1482 return true;
1483 }
1484
1485 return false;
1486}
1487
d18e53fc 1488static int alps_enter_command_mode(struct psmouse *psmouse)
25bded7c
SF		 1489{
1490 unsigned char param[4];
25bded7c 1491
24ba9707 1492 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) {
25bded7c
SF		 1493 psmouse_err(psmouse, "failed to enter command mode\n");
1494 return -1;
1495 }
1496
3808843c 1497 if (!alps_check_valid_firmware_id(param)) {
25bded7c 1498 psmouse_dbg(psmouse,
24ba9707 1499 "unknown response while entering command mode\n");
25bded7c
SF		 1500 return -1;
1501 }
25bded7c
SF		 1502 return 0;
1503}
1504
1505static inline int alps_exit_command_mode(struct psmouse *psmouse)
1506{
1507 struct ps2dev *ps2dev = &psmouse->ps2dev;
1508 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM))
1509 return -1;
1510 return 0;
1511}
1512
1da177e4
LT		 1513/*
1514 * For DualPoint devices select the device that should respond to
1515 * subsequent commands. It looks like glidepad is behind stickpointer,
1516 * I'd thought it would be other way around...
1517 */
25bded7c 1518static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable)
1da177e4
LT		 1519{
1520 struct ps2dev *ps2dev = &psmouse->ps2dev;
1da177e4
LT		 1521 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11;
1522
1523 if (ps2_command(ps2dev, NULL, cmd) ||
1524 ps2_command(ps2dev, NULL, cmd) ||
1525 ps2_command(ps2dev, NULL, cmd) ||
1526 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1527 return -1;
1528
1529 /* we may get 3 more bytes, just ignore them */
c611763d 1530 ps2_drain(ps2dev, 3, 100);
1da177e4
LT		 1531
1532 return 0;
1533}
1534
25bded7c 1535static int alps_absolute_mode_v1_v2(struct psmouse *psmouse)
1da177e4
LT		 1536{
1537 struct ps2dev *ps2dev = &psmouse->ps2dev;
1538
1539 /* Try ALPS magic knock - 4 disable before enable */
1540 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1541 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1542 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1543 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1544 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE))
1545 return -1;
1546
1547 /*
1548 * Switch mouse to poll (remote) mode so motion data will not
1549 * get in our way
1550 */
1551 return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL);
1552}
1553
95f75e91
YT		 1554static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word)
1555{
1556 int i, nibble;
1557
1558 /*
1559 * b0-b11 are valid bits, send sequence is inverse.
1560 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1
1561 */
1562 for (i = 0; i <= 8; i += 4) {
1563 nibble = (word >> i) & 0xf;
1564 if (alps_command_mode_send_nibble(psmouse, nibble))
1565 return -1;
1566 }
1567
1568 return 0;
1569}
1570
1571static int alps_monitor_mode_write_reg(struct psmouse *psmouse,
1572 u16 addr, u16 value)
1573{
1574 struct ps2dev *ps2dev = &psmouse->ps2dev;
1575
1576 /* 0x0A0 is the command to write the word */
1577 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) ||
1578 alps_monitor_mode_send_word(psmouse, 0x0A0) ||
1579 alps_monitor_mode_send_word(psmouse, addr) ||
1580 alps_monitor_mode_send_word(psmouse, value) ||
1581 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1582 return -1;
1583
1584 return 0;
1585}
1586
1587static int alps_monitor_mode(struct psmouse *psmouse, bool enable)
1588{
1589 struct ps2dev *ps2dev = &psmouse->ps2dev;
1590
1591 if (enable) {
1592 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */
1593 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
1594 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) ||
1595 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1596 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1597 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
1598 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1599 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
1600 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO))
1601 return -1;
1602 } else {
1603 /* EC to exit monitor mode */
1604 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP))
1605 return -1;
1606 }
1607
1608 return 0;
1609}
1610
1611static int alps_absolute_mode_v6(struct psmouse *psmouse)
1612{
1613 u16 reg_val = 0x181;
1614 int ret = -1;
1615
1616 /* enter monitor mode, to write the register */
1617 if (alps_monitor_mode(psmouse, true))
1618 return -1;
1619
1620 ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val);
1621
1622 if (alps_monitor_mode(psmouse, false))
1623 ret = -1;
1624
1625 return ret;
1626}
1627
1da177e4
LT		 1628static int alps_get_status(struct psmouse *psmouse, char *param)
1629{
1da177e4 1630 /* Get status: 0xF5 0xF5 0xF5 0xE9 */
24ba9707 1631 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param))
1da177e4
LT		 1632 return -1;
1633
1da177e4
LT		 1634 return 0;
1635}
1636
1637/*
1638 * Turn touchpad tapping on or off. The sequences are:
1639 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable,
1640 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable.
1641 * My guess that 0xE9 (GetInfo) is here as a sync point.
1642 * For models that also have stickpointer (DualPoints) its tapping
1643 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but
1644 * we don't fiddle with it.
1645 */
1646static int alps_tap_mode(struct psmouse *psmouse, int enable)
1647{
1648 struct ps2dev *ps2dev = &psmouse->ps2dev;
1649 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES;
1650 unsigned char tap_arg = enable ? 0x0A : 0x00;
1651 unsigned char param[4];
1652
1653 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) ||
1654 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1655 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1656 ps2_command(ps2dev, &tap_arg, cmd))
1657 return -1;
1658
1659 if (alps_get_status(psmouse, param))
1660 return -1;
1661
1662 return 0;
1663}
1664
f0d5c6f4
DT		 1665/*
1666 * alps_poll() - poll the touchpad for current motion packet.
1667 * Used in resync.
1668 */
1669static int alps_poll(struct psmouse *psmouse)
1670{
1671 struct alps_data *priv = psmouse->private;
b46615fe 1672 unsigned char buf[sizeof(psmouse->packet)];
b7802c5c 1673 bool poll_failed;
f0d5c6f4 1674
99df65e7 1675 if (priv->flags & ALPS_PASS)
25bded7c 1676 alps_passthrough_mode_v2(psmouse, true);
f0d5c6f4
DT		 1677
1678 poll_failed = ps2_command(&psmouse->ps2dev, buf,
1679 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0;
1680
99df65e7 1681 if (priv->flags & ALPS_PASS)
25bded7c 1682 alps_passthrough_mode_v2(psmouse, false);
f0d5c6f4 1683
99df65e7 1684 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0)
f0d5c6f4
DT		 1685 return -1;
1686
1687 if ((psmouse->badbyte & 0xc8) == 0x08) {
1688/*
1689 * Poll the track stick ...
1690 */
1691 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8)))
1692 return -1;
1693 }
1694
1695 memcpy(psmouse->packet, buf, sizeof(buf));
1696 return 0;
1697}
1698
25bded7c 1699static int alps_hw_init_v1_v2(struct psmouse *psmouse)
1da177e4
LT		 1700{
1701 struct alps_data *priv = psmouse->private;
f3a5c73d 1702
99df65e7 1703 if ((priv->flags & ALPS_PASS) &&
25bded7c 1704 alps_passthrough_mode_v2(psmouse, true)) {
1da177e4 1705 return -1;
b7802c5c 1706 }
1da177e4 1707
b7802c5c 1708 if (alps_tap_mode(psmouse, true)) {
b5d21704 1709 psmouse_warn(psmouse, "Failed to enable hardware tapping\n");
1da177e4 1710 return -1;
963f626d 1711 }
1da177e4 1712
25bded7c 1713 if (alps_absolute_mode_v1_v2(psmouse)) {
b5d21704 1714 psmouse_err(psmouse, "Failed to enable absolute mode\n");
1da177e4
LT		 1715 return -1;
1716 }
1717
99df65e7 1718 if ((priv->flags & ALPS_PASS) &&
25bded7c 1719 alps_passthrough_mode_v2(psmouse, false)) {
1da177e4 1720 return -1;
b7802c5c 1721 }
1da177e4 1722
1e0c5b12
DT		 1723 /* ALPS needs stream mode, otherwise it won't report any data */
1724 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) {
b5d21704 1725 psmouse_err(psmouse, "Failed to enable stream mode\n");
1e0c5b12
DT		 1726 return -1;
1727 }
1728
1729 return 0;
1730}
1731
95f75e91
YT		 1732static int alps_hw_init_v6(struct psmouse *psmouse)
1733{
1734 unsigned char param[2] = {0xC8, 0x14};
1735
1736 /* Enter passthrough mode to let trackpoint enter 6byte raw mode */
1737 if (alps_passthrough_mode_v2(psmouse, true))
1738 return -1;
1739
1740 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1741 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1742 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1743 ps2_command(&psmouse->ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
1744 ps2_command(&psmouse->ps2dev, &param[1], PSMOUSE_CMD_SETRATE))
1745 return -1;
1746
1747 if (alps_passthrough_mode_v2(psmouse, false))
1748 return -1;
1749
1750 if (alps_absolute_mode_v6(psmouse)) {
1751 psmouse_err(psmouse, "Failed to enable absolute mode\n");
1752 return -1;
1753 }
1754
1755 return 0;
1756}
1757
25bded7c 1758/*
cd401204 1759 * Enable or disable passthrough mode to the trackstick.
25bded7c 1760 */
cd401204
KC		 1761static int alps_passthrough_mode_v3(struct psmouse *psmouse,
1762 int reg_base, bool enable)
25bded7c 1763{
cd401204 1764 int reg_val, ret = -1;
25bded7c 1765
d18e53fc 1766 if (alps_enter_command_mode(psmouse))
25bded7c
SF		 1767 return -1;
1768
cd401204
KC		 1769 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008);
1770 if (reg_val == -1)
1771 goto error;
1772
25bded7c
SF		 1773 if (enable)
1774 reg_val |= 0x01;
1775 else
1776 reg_val &= ~0x01;
1777
cd401204 1778 ret = __alps_command_mode_write_reg(psmouse, reg_val);
25bded7c 1779
cd401204
KC		 1780error:
1781 if (alps_exit_command_mode(psmouse))
1782 ret = -1;
1783 return ret;
25bded7c
SF		 1784}
1785
1786/* Must be in command mode when calling this function */
1787static int alps_absolute_mode_v3(struct psmouse *psmouse)
1788{
1789 int reg_val;
1790
1791 reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
1792 if (reg_val == -1)
1793 return -1;
1794
1795 reg_val |= 0x06;
1796 if (__alps_command_mode_write_reg(psmouse, reg_val))
1797 return -1;
1798
1799 return 0;
1800}
1801
cd401204 1802static int alps_probe_trackstick_v3(struct psmouse *psmouse, int reg_base)
25bded7c 1803{
cd401204 1804 int ret = -EIO, reg_val;
25bded7c 1805
d18e53fc 1806 if (alps_enter_command_mode(psmouse))
25bded7c
SF		 1807 goto error;
1808
cd401204 1809 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08);
25bded7c
SF		 1810 if (reg_val == -1)
1811 goto error;
cd401204
KC		 1812
1813 /* bit 7: trackstick is present */
1814 ret = reg_val & 0x80 ? 0 : -ENODEV;
1815
1816error:
1817 alps_exit_command_mode(psmouse);
1818 return ret;
1819}
1820
1821static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base)
1822{
1823 struct ps2dev *ps2dev = &psmouse->ps2dev;
1824 int ret = 0;
1825 unsigned char param[4];
1826
1827 if (alps_passthrough_mode_v3(psmouse, reg_base, true))
1828 return -EIO;
1829
1830 /*
1831 * E7 report for the trackstick
1832 *
1833 * There have been reports of failures to seem to trace back
1834 * to the above trackstick check failing. When these occur
1835 * this E7 report fails, so when that happens we continue
1836 * with the assumption that there isn't a trackstick after
1837 * all.
1838 */
1839 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) {
a09221e8 1840 psmouse_warn(psmouse, "Failed to initialize trackstick (E7 report failed)\n");
cd401204
KC		 1841 ret = -ENODEV;
1842 } else {
39fbe585 1843 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param);
25bded7c
SF		 1844
1845 /*
cd401204
KC		 1846 * Not sure what this does, but it is absolutely
1847 * essential. Without it, the touchpad does not
1848 * work at all and the trackstick just emits normal
1849 * PS/2 packets.
25bded7c 1850 */
cd401204
KC		 1851 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1852 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1853 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1854 alps_command_mode_send_nibble(psmouse, 0x9) ||
1855 alps_command_mode_send_nibble(psmouse, 0x4)) {
1856 psmouse_err(psmouse,
1857 "Error sending magic E6 sequence\n");
1858 ret = -EIO;
1859 goto error;
25bded7c
SF		 1860 }
1861
cd401204
KC		 1862 /*
1863 * This ensures the trackstick packets are in the format
1864 * supported by this driver. If bit 1 isn't set the packet
1865 * format is different.
1866 */
d18e53fc 1867 if (alps_enter_command_mode(psmouse) ||
cd401204
KC		 1868 alps_command_mode_write_reg(psmouse,
1869 reg_base + 0x08, 0x82) ||
1870 alps_exit_command_mode(psmouse))
1871 ret = -EIO;
25bded7c
SF		 1872 }
1873
cd401204
KC		 1874error:
1875 if (alps_passthrough_mode_v3(psmouse, reg_base, false))
1876 ret = -EIO;
1877
1878 return ret;
1879}
1880
1881static int alps_hw_init_v3(struct psmouse *psmouse)
1882{
1883 struct ps2dev *ps2dev = &psmouse->ps2dev;
1884 int reg_val;
1885 unsigned char param[4];
1886
1887 reg_val = alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE);
1888 if (reg_val == -EIO)
1889 goto error;
39fbe585 1890
cd401204
KC		 1891 if (reg_val == 0 &&
1892 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO)
1893 goto error;
1894
d18e53fc 1895 if (alps_enter_command_mode(psmouse) ||
cd401204 1896 alps_absolute_mode_v3(psmouse)) {
25bded7c
SF		 1897 psmouse_err(psmouse, "Failed to enter absolute mode\n");
1898 goto error;
1899 }
1900
1901 reg_val = alps_command_mode_read_reg(psmouse, 0x0006);
1902 if (reg_val == -1)
1903 goto error;
1904 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
1905 goto error;
1906
1907 reg_val = alps_command_mode_read_reg(psmouse, 0x0007);
1908 if (reg_val == -1)
1909 goto error;
1910 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
1911 goto error;
1912
1913 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1)
1914 goto error;
1915 if (__alps_command_mode_write_reg(psmouse, 0x04))
1916 goto error;
1917
1918 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1)
1919 goto error;
1920 if (__alps_command_mode_write_reg(psmouse, 0x03))
1921 goto error;
1922
1923 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1)
1924 goto error;
1925 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03))
1926 goto error;
1927
1928 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1)
1929 goto error;
1930 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04))
1931 goto error;
1932
25bded7c
SF		 1933 alps_exit_command_mode(psmouse);
1934
1935 /* Set rate and enable data reporting */
1936 param[0] = 0x64;
1937 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
1938 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
1939 psmouse_err(psmouse, "Failed to enable data reporting\n");
1940 return -1;
1941 }
1942
1943 return 0;
1944
25bded7c
SF		 1945error:
1946 /*
1947 * Leaving the touchpad in command mode will essentially render
1948 * it unusable until the machine reboots, so exit it here just
1949 * to be safe
1950 */
1951 alps_exit_command_mode(psmouse);
1952 return -1;
1953}
1954
f3f33c67
HG		 1955static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch)
1956{
1957 int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys;
1958 struct alps_data *priv = psmouse->private;
1959
1960 reg = alps_command_mode_read_reg(psmouse, reg_pitch);
1961 if (reg < 0)
1962 return reg;
1963
1964 x_pitch = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */
1965 x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */
1966
1967 y_pitch = (char)reg >> 4; /* sign extend upper 4 bits */
1968 y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */
1969
1970 reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1);
1971 if (reg < 0)
1972 return reg;
1973
1974 x_electrode = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */
1975 x_electrode = 17 + x_electrode;
1976
1977 y_electrode = (char)reg >> 4; /* sign extend upper 4 bits */
1978 y_electrode = 13 + y_electrode;
1979
1980 x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */
1981 y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */
1982
1983 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */
1984 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */
1985
1986 psmouse_dbg(psmouse,
1987 "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n",
1988 x_pitch, y_pitch, x_electrode, y_electrode,
1989 x_phys / 10, y_phys / 10, priv->x_res, priv->y_res);
1990
1991 return 0;
1992}
1993
1302bac3
KC		 1994static int alps_hw_init_rushmore_v3(struct psmouse *psmouse)
1995{
cd401204 1996 struct alps_data *priv = psmouse->private;
1302bac3
KC		 1997 struct ps2dev *ps2dev = &psmouse->ps2dev;
1998 int reg_val, ret = -1;
1999
cd401204
KC		 2000 if (priv->flags & ALPS_DUALPOINT) {
2001 reg_val = alps_setup_trackstick_v3(psmouse,
2002 ALPS_REG_BASE_RUSHMORE);
2003 if (reg_val == -EIO)
2004 goto error;
cd401204
KC		 2005 }
2006
d18e53fc 2007 if (alps_enter_command_mode(psmouse) ||
1302bac3
KC		 2008 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 ||
2009 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00))
2010 goto error;
2011
f3f33c67
HG		 2012 if (alps_get_v3_v7_resolution(psmouse, 0xc2da))
2013 goto error;
2014
1302bac3
KC		 2015 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6);
2016 if (reg_val == -1)
2017 goto error;
2018 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd))
2019 goto error;
2020
2021 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64))
2022 goto error;
2023
2024 /* enter absolute mode */
2025 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4);
2026 if (reg_val == -1)
2027 goto error;
2028 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02))
2029 goto error;
2030
2031 alps_exit_command_mode(psmouse);
2032 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
2033
2034error:
2035 alps_exit_command_mode(psmouse);
2036 return ret;
2037}
2038
25bded7c
SF		 2039/* Must be in command mode when calling this function */
2040static int alps_absolute_mode_v4(struct psmouse *psmouse)
2041{
2042 int reg_val;
2043
2044 reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
2045 if (reg_val == -1)
2046 return -1;
2047
2048 reg_val |= 0x02;
2049 if (__alps_command_mode_write_reg(psmouse, reg_val))
2050 return -1;
2051
2052 return 0;
2053}
2054
2055static int alps_hw_init_v4(struct psmouse *psmouse)
2056{
25bded7c
SF		 2057 struct ps2dev *ps2dev = &psmouse->ps2dev;
2058 unsigned char param[4];
2059
d18e53fc 2060 if (alps_enter_command_mode(psmouse))
25bded7c
SF		 2061 goto error;
2062
2063 if (alps_absolute_mode_v4(psmouse)) {
2064 psmouse_err(psmouse, "Failed to enter absolute mode\n");
2065 goto error;
2066 }
2067
2068 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c))
2069 goto error;
2070
2071 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03))
2072 goto error;
2073
2074 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03))
2075 goto error;
2076
2077 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15))
2078 goto error;
2079
2080 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01))
2081 goto error;
2082
2083 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03))
2084 goto error;
2085
2086 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03))
2087 goto error;
2088
2089 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03))
2090 goto error;
2091
2092 alps_exit_command_mode(psmouse);
2093
2094 /*
2095 * This sequence changes the output from a 9-byte to an
2096 * 8-byte format. All the same data seems to be present,
2097 * just in a more compact format.
2098 */
2099 param[0] = 0xc8;
2100 param[1] = 0x64;
2101 param[2] = 0x50;
2102 if (ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
2103 ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE) ||
2104 ps2_command(ps2dev, &param[2], PSMOUSE_CMD_SETRATE) ||
2105 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID))
2106 return -1;
2107
2108 /* Set rate and enable data reporting */
2109 param[0] = 0x64;
2110 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
2111 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
2112 psmouse_err(psmouse, "Failed to enable data reporting\n");
2113 return -1;
2114 }
2115
2116 return 0;
2117
2118error:
2119 /*
2120 * Leaving the touchpad in command mode will essentially render
2121 * it unusable until the machine reboots, so exit it here just
2122 * to be safe
2123 */
2124 alps_exit_command_mode(psmouse);
2125 return -1;
2126}
2127
ee65d4b3
YT		 2128static int alps_dolphin_get_device_area(struct psmouse *psmouse,
2129 struct alps_data *priv)
2130{
2131 struct ps2dev *ps2dev = &psmouse->ps2dev;
2132 unsigned char param[4] = {0};
2133 int num_x_electrode, num_y_electrode;
2134
2135 if (alps_enter_command_mode(psmouse))
2136 return -1;
2137
2138 param[0] = 0x0a;
2139 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
2140 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
2141 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
2142 ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
2143 ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE))
2144 return -1;
2145
2146 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
2147 return -1;
2148
2149 /*
2150 * Dolphin's sensor line number is not fixed. It can be calculated
2151 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET.
2152 * Further more, we can get device's x_max and y_max by multiplying
2153 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE.
2154 *
2155 * e.g. When we get register's sensor_x = 11 & sensor_y = 8,
2156 * real sensor line number X = 11 + 8 = 19, and
2157 * real sensor line number Y = 8 + 1 = 9.
2158 * So, x_max = (19 - 1) * 64 = 1152, and
2159 * y_max = (9 - 1) * 64 = 512.
2160 */
2161 num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F);
2162 num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F);
2163 priv->x_bits = num_x_electrode;
2164 priv->y_bits = num_y_electrode;
2165 priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE;
2166 priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE;
2167
2168 if (alps_exit_command_mode(psmouse))
2169 return -1;
2170
2171 return 0;
2172}
2173
75af9e56
DT		 2174static int alps_hw_init_dolphin_v1(struct psmouse *psmouse)
2175{
2176 struct ps2dev *ps2dev = &psmouse->ps2dev;
2177 unsigned char param[2];
2178
2179 /* This is dolphin "v1" as empirically defined by florin9doi */
2180 param[0] = 0x64;
2181 param[1] = 0x28;
2182
2183 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
2184 ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
2185 ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE))
2186 return -1;
2187
2188 return 0;
2189}
2190
3808843c
YT		 2191static int alps_hw_init_v7(struct psmouse *psmouse)
2192{
2193 struct ps2dev *ps2dev = &psmouse->ps2dev;
2194 int reg_val, ret = -1;
2195
2196 if (alps_enter_command_mode(psmouse) ||
2197 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1)
2198 goto error;
2199
f3f33c67
HG		 2200 if (alps_get_v3_v7_resolution(psmouse, 0xc397))
2201 goto error;
2202
3808843c
YT		 2203 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64))
2204 goto error;
2205
2206 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4);
2207 if (reg_val == -1)
2208 goto error;
2209 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02))
2210 goto error;
2211
2212 alps_exit_command_mode(psmouse);
2213 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
2214
2215error:
2216 alps_exit_command_mode(psmouse);
2217 return ret;
2218}
2219
3296f71c
DT		 2220static int alps_set_protocol(struct psmouse *psmouse,
2221 struct alps_data *priv,
2222 const struct alps_protocol_info *protocol)
25bded7c 2223{
3296f71c
DT		 2224 psmouse->private = priv;
2225
2226 setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse);
2227
2228 priv->proto_version = protocol->version;
2229 priv->byte0 = protocol->byte0;
2230 priv->mask0 = protocol->mask0;
2231 priv->flags = protocol->flags;
f673ceb1 2232
7a9f73e7
KC		 2233 priv->x_max = 2000;
2234 priv->y_max = 1400;
2235 priv->x_bits = 15;
2236 priv->y_bits = 11;
2237
99df65e7 2238 switch (priv->proto_version) {
25bded7c
SF		 2239 case ALPS_PROTO_V1:
2240 case ALPS_PROTO_V2:
24af5cb9
KC		 2241 priv->hw_init = alps_hw_init_v1_v2;
2242 priv->process_packet = alps_process_packet_v1_v2;
2243 priv->set_abs_params = alps_set_abs_params_st;
95f75e91
YT		 2244 priv->x_max = 1023;
2245 priv->y_max = 767;
25bded7c 2246 break;
fb2dd7a6 2247
25bded7c 2248 case ALPS_PROTO_V3:
24af5cb9
KC		 2249 priv->hw_init = alps_hw_init_v3;
2250 priv->process_packet = alps_process_packet_v3;
2251 priv->set_abs_params = alps_set_abs_params_mt;
f85e5001 2252 priv->decode_fields = alps_decode_pinnacle;
50e8b216
KC		 2253 priv->nibble_commands = alps_v3_nibble_commands;
2254 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
25bded7c 2255 break;
fb2dd7a6
DT		 2256
2257 case ALPS_PROTO_V3_RUSHMORE:
2258 priv->hw_init = alps_hw_init_rushmore_v3;
2259 priv->process_packet = alps_process_packet_v3;
2260 priv->set_abs_params = alps_set_abs_params_mt;
2261 priv->decode_fields = alps_decode_rushmore;
2262 priv->nibble_commands = alps_v3_nibble_commands;
2263 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2264 priv->x_bits = 16;
2265 priv->y_bits = 12;
3296f71c
DT		 2266
2267 if (alps_probe_trackstick_v3(psmouse,
2268 ALPS_REG_BASE_RUSHMORE) < 0)
2269 priv->flags &= ~ALPS_DUALPOINT;
2270
fb2dd7a6
DT		 2271 break;
2272
25bded7c 2273 case ALPS_PROTO_V4:
24af5cb9
KC		 2274 priv->hw_init = alps_hw_init_v4;
2275 priv->process_packet = alps_process_packet_v4;
2276 priv->set_abs_params = alps_set_abs_params_mt;
50e8b216
KC		 2277 priv->nibble_commands = alps_v4_nibble_commands;
2278 priv->addr_command = PSMOUSE_CMD_DISABLE;
25bded7c 2279 break;
3296f71c 2280
75af9e56
DT		 2281 case ALPS_PROTO_V5:
2282 priv->hw_init = alps_hw_init_dolphin_v1;
ee65d4b3 2283 priv->process_packet = alps_process_touchpad_packet_v3_v5;
75af9e56
DT		 2284 priv->decode_fields = alps_decode_dolphin;
2285 priv->set_abs_params = alps_set_abs_params_mt;
2286 priv->nibble_commands = alps_v3_nibble_commands;
2287 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
75af9e56
DT		 2288 priv->x_bits = 23;
2289 priv->y_bits = 12;
c164c147
DT		 2290
2291 if (alps_dolphin_get_device_area(psmouse, priv))
2292 return -EIO;
2293
75af9e56 2294 break;
3296f71c 2295
95f75e91
YT		 2296 case ALPS_PROTO_V6:
2297 priv->hw_init = alps_hw_init_v6;
2298 priv->process_packet = alps_process_packet_v6;
2299 priv->set_abs_params = alps_set_abs_params_st;
2300 priv->nibble_commands = alps_v6_nibble_commands;
2301 priv->x_max = 2047;
2302 priv->y_max = 1535;
2303 break;
3296f71c 2304
3808843c
YT		 2305 case ALPS_PROTO_V7:
2306 priv->hw_init = alps_hw_init_v7;
2307 priv->process_packet = alps_process_packet_v7;
2308 priv->decode_fields = alps_decode_packet_v7;
2309 priv->set_abs_params = alps_set_abs_params_mt;
2310 priv->nibble_commands = alps_v3_nibble_commands;
2311 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
c164c147
DT		 2312 priv->x_max = 0xfff;
2313 priv->y_max = 0x7ff;
3808843c
YT		 2314
2315 if (priv->fw_ver[1] != 0xba)
2316 priv->flags |= ALPS_BUTTONPAD;
3296f71c 2317
3808843c 2318 break;
25bded7c 2319 }
3296f71c
DT		 2320
2321 return 0;
25bded7c
SF		 2322}
2323
3296f71c
DT		 2324static const struct alps_protocol_info *alps_match_table(unsigned char *e7,
2325 unsigned char *ec)
2e992cc0 2326{
b5d6b851 2327 const struct alps_model_info *model;
2e992cc0
KC		 2328 int i;
2329
b5d6b851
KC		 2330 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) {
2331 model = &alps_model_data[i];
2332
2333 if (!memcmp(e7, model->signature, sizeof(model->signature)) &&
2334 (!model->command_mode_resp ||
2335 model->command_mode_resp == ec[2])) {
2336
3296f71c 2337 return &model->protocol_info;
b5d6b851
KC		 2338 }
2339 }
2340
3296f71c 2341 return NULL;
b5d6b851
KC		 2342}
2343
2344static int alps_identify(struct psmouse *psmouse, struct alps_data *priv)
2345{
3296f71c 2346 const struct alps_protocol_info *protocol;
b5d6b851 2347 unsigned char e6[4], e7[4], ec[4];
a09221e8 2348 int error;
b5d6b851 2349
2e992cc0
KC		 2350 /*
2351 * First try "E6 report".
2352 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed.
2353 * The bits 0-2 of the first byte will be 1s if some buttons are
2354 * pressed.
2355 */
b5d6b851
KC		 2356 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
2357 PSMOUSE_CMD_SETSCALE11, e6))
2358 return -EIO;
2e992cc0 2359
b5d6b851
KC		 2360 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100))
2361 return -EINVAL;
2e992cc0
KC		 2362
2363 /*
b5d6b851
KC		 2364 * Now get the "E7" and "EC" reports. These will uniquely identify
2365 * most ALPS touchpads.
2e992cc0 2366 */
b5d6b851
KC		 2367 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
2368 PSMOUSE_CMD_SETSCALE21, e7) ||
2369 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
2370 PSMOUSE_CMD_RESET_WRAP, ec) ||
2371 alps_exit_command_mode(psmouse))
2372 return -EIO;
2e992cc0 2373
3296f71c
DT		 2374 protocol = alps_match_table(e7, ec);
2375 if (!protocol) {
2376 if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 &&
2377 ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) {
2378 protocol = &alps_v5_protocol_data;
2379 } else if (ec[0] == 0x88 &&
2380 ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) {
2381 protocol = &alps_v7_protocol_data;
2382 } else if (ec[0] == 0x88 && ec[1] == 0x08) {
2383 protocol = &alps_v3_rushmore_data;
2384 } else if (ec[0] == 0x88 && ec[1] == 0x07 &&
2385 ec[2] >= 0x90 && ec[2] <= 0x9d) {
2386 protocol = &alps_v3_protocol_data;
2387 } else {
2388 psmouse_dbg(psmouse,
2389 "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec);
2390 return -EINVAL;
2391 }
f673ceb1 2392 }
2e992cc0 2393
a09221e8
DT		 2394 if (priv) {
2395 /* Save the Firmware version */
2396 memcpy(priv->fw_ver, ec, 3);
2397 error = alps_set_protocol(psmouse, priv, protocol);
2398 if (error)
2399 return error;
2400 }
2e992cc0 2401
a09221e8 2402 return 0;
2e992cc0
KC		 2403}
2404
1e0c5b12
DT		 2405static int alps_reconnect(struct psmouse *psmouse)
2406{
b5d6b851 2407 struct alps_data *priv = psmouse->private;
71bb21b6 2408
1e0c5b12
DT		 2409 psmouse_reset(psmouse);
2410
b5d6b851 2411 if (alps_identify(psmouse, priv) < 0)
1e0c5b12
DT		 2412 return -1;
2413
24af5cb9 2414 return priv->hw_init(psmouse);
1da177e4
LT		 2415}
2416
2417static void alps_disconnect(struct psmouse *psmouse)
2418{
2419 struct alps_data *priv = psmouse->private;
2e5b636b 2420
1da177e4 2421 psmouse_reset(psmouse);
1d9f2626 2422 del_timer_sync(&priv->timer);
04aae283
PR		 2423 if (priv->dev2)
2424 input_unregister_device(priv->dev2);
2425 if (!IS_ERR_OR_NULL(priv->dev3))
2426 input_unregister_device(priv->dev3);
1da177e4
LT		 2427 kfree(priv);
2428}
2429
24af5cb9
KC		 2430static void alps_set_abs_params_st(struct alps_data *priv,
2431 struct input_dev *dev1)
2432{
95f75e91
YT		 2433 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0);
2434 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0);
24af5cb9
KC		 2435}
2436
2437static void alps_set_abs_params_mt(struct alps_data *priv,
2438 struct input_dev *dev1)
2439{
7a9f73e7
KC		 2440 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0);
2441 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0);
24af5cb9 2442
f3f33c67
HG		 2443 input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res);
2444 input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res);
2445
cdf333ef
HG		 2446 input_mt_init_slots(dev1, MAX_TOUCHES, INPUT_MT_POINTER |
2447 INPUT_MT_DROP_UNUSED | INPUT_MT_TRACK | INPUT_MT_SEMI_MT);
2448
24af5cb9
KC		 2449 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit);
2450 set_bit(BTN_TOOL_QUADTAP, dev1->keybit);
3808843c
YT		 2451
2452 /* V7 is real multi-touch */
2453 if (priv->proto_version == ALPS_PROTO_V7)
2454 clear_bit(INPUT_PROP_SEMI_MT, dev1->propbit);
24af5cb9
KC		 2455}
2456
1da177e4
LT		 2457int alps_init(struct psmouse *psmouse)
2458{
a09221e8 2459 struct alps_data *priv = psmouse->private;
04aae283 2460 struct input_dev *dev1 = psmouse->dev;
a09221e8 2461 int error;
1da177e4 2462
a09221e8
DT		 2463 error = priv->hw_init(psmouse);
2464 if (error)
1da177e4
LT		 2465 goto init_fail;
2466
7105d2ea
DT		 2467 /*
2468 * Undo part of setup done for us by psmouse core since touchpad
2469 * is not a relative device.
2470 */
2471 __clear_bit(EV_REL, dev1->evbit);
2472 __clear_bit(REL_X, dev1->relbit);
2473 __clear_bit(REL_Y, dev1->relbit);
2474
2475 /*
2476 * Now set up our capabilities.
2477 */
7b19ada2
JS		 2478 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY);
2479 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH);
2480 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER);
71bb21b6
ML		 2481 dev1->keybit[BIT_WORD(BTN_LEFT)] |=
2482 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
1da177e4 2483
7b19ada2 2484 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS);
25bded7c 2485
24af5cb9 2486 priv->set_abs_params(priv, dev1);
3808843c
YT		 2487 /* No pressure on V7 */
2488 if (priv->proto_version != ALPS_PROTO_V7)
2489 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
1da177e4 2490
99df65e7 2491 if (priv->flags & ALPS_WHEEL) {
7b19ada2
JS		 2492 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL);
2493 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL);
1da177e4
LT		 2494 }
2495
99df65e7 2496 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
7b19ada2
JS		 2497 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD);
2498 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK);
1da177e4
LT		 2499 }
2500
99df65e7 2501 if (priv->flags & ALPS_FOUR_BUTTONS) {
71bb21b6
ML		 2502 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0);
2503 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1);
2504 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2);
2505 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3);
3808843c
YT		 2506 } else if (priv->flags & ALPS_BUTTONPAD) {
2507 set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit);
2508 clear_bit(BTN_RIGHT, dev1->keybit);
71bb21b6
ML		 2509 } else {
2510 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE);
2511 }
2512
dfba8600 2513 if (priv->flags & ALPS_DUALPOINT) {
04aae283
PR		 2514 struct input_dev *dev2;
2515
2516 dev2 = input_allocate_device();
2517 if (!dev2) {
2518 psmouse_err(psmouse,
2519 "failed to allocate trackstick device\n");
2520 error = -ENOMEM;
2521 goto init_fail;
2522 }
2523
2524 snprintf(priv->phys2, sizeof(priv->phys2), "%s/input1",
2525 psmouse->ps2dev.serio->phys);
2526 dev2->phys = priv->phys2;
2527
dfba8600
PR		 2528 /*
2529 * format of input device name is: "protocol vendor name"
2530 * see function psmouse_switch_protocol() in psmouse-base.c
2531 */
2532 dev2->name = "AlpsPS/2 ALPS DualPoint Stick";
04aae283
PR		 2533
2534 dev2->id.bustype = BUS_I8042;
2535 dev2->id.vendor = 0x0002;
dfba8600
PR		 2536 dev2->id.product = PSMOUSE_ALPS;
2537 dev2->id.version = priv->proto_version;
04aae283 2538 dev2->dev.parent = &psmouse->ps2dev.serio->dev;
1da177e4 2539
04aae283
PR		 2540 input_set_capability(dev2, EV_REL, REL_X);
2541 input_set_capability(dev2, EV_REL, REL_Y);
2542 input_set_capability(dev2, EV_KEY, BTN_LEFT);
2543 input_set_capability(dev2, EV_KEY, BTN_RIGHT);
2544 input_set_capability(dev2, EV_KEY, BTN_MIDDLE);
1da177e4 2545
04aae283 2546 __set_bit(INPUT_PROP_POINTER, dev2->propbit);
7611392f
HG		 2547 __set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit);
2548
04aae283
PR		 2549 error = input_register_device(dev2);
2550 if (error) {
2551 psmouse_err(psmouse,
2552 "failed to register trackstick device: %d\n",
2553 error);
2554 input_free_device(dev2);
2555 goto init_fail;
2556 }
2557
2558 priv->dev2 = dev2;
2559 }
2560
2561 priv->psmouse = psmouse;
2562
2563 INIT_DELAYED_WORK(&priv->dev3_register_work,
2564 alps_register_bare_ps2_mouse);
1da177e4
LT		 2565
2566 psmouse->protocol_handler = alps_process_byte;
f0d5c6f4 2567 psmouse->poll = alps_poll;
1da177e4
LT		 2568 psmouse->disconnect = alps_disconnect;
2569 psmouse->reconnect = alps_reconnect;
99df65e7 2570 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6;
1da177e4 2571
f0d5c6f4
DT		 2572 /* We are having trouble resyncing ALPS touchpads so disable it for now */
2573 psmouse->resync_time = 0;
2574
9d720b34
PR		 2575 /* Allow 2 invalid packets without resetting device */
2576 psmouse->resetafter = psmouse->pktsize * 2;
2577
1da177e4
LT		 2578 return 0;
2579
2580init_fail:
f42649e8 2581 psmouse_reset(psmouse);
a09221e8
DT		 2582 /*
2583 * Even though we did not allocate psmouse->private we do free
2584 * it here.
2585 */
2586 kfree(psmouse->private);
1e0c5b12 2587 psmouse->private = NULL;
a09221e8 2588 return error;
1da177e4
LT		 2589}
2590
b7802c5c 2591int alps_detect(struct psmouse *psmouse, bool set_properties)
1da177e4 2592{
a09221e8
DT		 2593 struct alps_data *priv;
2594 int error;
1da177e4 2595
a09221e8
DT		 2596 error = alps_identify(psmouse, NULL);
2597 if (error)
2598 return error;
2599
2600 /*
2601 * Reset the device to make sure it is fully operational:
2602 * on some laptops, like certain Dell Latitudes, we may
2603 * fail to properly detect presence of trackstick if device
2604 * has not been reset.
2605 */
2606 psmouse_reset(psmouse);
2607
2608 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL);
2609 if (!priv)
2610 return -ENOMEM;
2611
2612 error = alps_identify(psmouse, priv);
93050db2
DT		 2613 if (error) {
2614 kfree(priv);
a09221e8 2615 return error;
93050db2 2616 }
1da177e4
LT		 2617
2618 if (set_properties) {
2619 psmouse->vendor = "ALPS";
a09221e8 2620 psmouse->name = priv->flags & ALPS_DUALPOINT ?
968ac842 2621 "DualPoint TouchPad" : "GlidePoint";
a09221e8
DT		 2622 psmouse->model = priv->proto_version;
2623 } else {
2624 /*
2625 * Destroy alps_data structure we allocated earlier since
2626 * this was just a "trial run". Otherwise we'll keep it
2627 * to be used by alps_init() which has to be called if
2628 * we succeed and set_properties is true.
2629 */
2630 kfree(priv);
2631 psmouse->private = NULL;
1da177e4 2632 }
a09221e8 2633
1da177e4
LT		 2634 return 0;
2635}
2636
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