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Bluetooth: hci_uart: Use generic functionality from Broadcom module
[linux/fpc-iii.git] / drivers / input / mouse / alps.c
blob27bcdbc950c9fc2df9067504cfe055bf379eee78
1 /*
2 * ALPS touchpad PS/2 mouse driver
3 *
4 * Copyright (c) 2003 Neil Brown <neilb@cse.unsw.edu.au>
5 * Copyright (c) 2003-2005 Peter Osterlund <petero2@telia.com>
6 * Copyright (c) 2004 Dmitry Torokhov <dtor@mail.ru>
7 * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
8 * Copyright (c) 2009 Sebastian Kapfer <sebastian_kapfer@gmx.net>
9 *
10 * ALPS detection, tap switching and status querying info is taken from
11 * tpconfig utility (by C. Scott Ananian and Bruce Kall).
12 *
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License version 2 as published by
15 * the Free Software Foundation.
16 */
17
18 #include <linux/slab.h>
19 #include <linux/input.h>
20 #include <linux/input/mt.h>
21 #include <linux/serio.h>
22 #include <linux/libps2.h>
23
24 #include "psmouse.h"
25 #include "alps.h"
26
27 /*
28 * Definitions for ALPS version 3 and 4 command mode protocol
29 */
30 #define ALPS_CMD_NIBBLE_10 0x01f2
31
32 #define ALPS_REG_BASE_RUSHMORE 0xc2c0
33 #define ALPS_REG_BASE_PINNACLE 0x0000
34
35 static const struct alps_nibble_commands alps_v3_nibble_commands[] = {
36 { PSMOUSE_CMD_SETPOLL, 0x00 }, /* 0 */
37 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */
38 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */
39 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */
40 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */
41 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */
42 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */
43 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */
44 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */
45 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */
46 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */
47 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */
48 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */
49 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */
50 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */
51 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */
52 };
53
54 static const struct alps_nibble_commands alps_v4_nibble_commands[] = {
55 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */
56 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */
57 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */
58 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */
59 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */
60 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */
61 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */
62 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */
63 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */
64 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */
65 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */
66 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */
67 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */
68 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */
69 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */
70 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */
71 };
72
73 static 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
92
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 */
100 #define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with
101 6-byte ALPS packet */
102 #define ALPS_BUTTONPAD 0x200 /* device is a clickpad */
103
104 static const struct alps_model_info alps_model_data[] = {
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 */
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
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 */
130 /* Dell Latitude E5500, E6400, E6500, Precision M4400 */
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 } },
138 };
139
140 static const struct alps_protocol_info alps_v3_protocol_data = {
141 ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT
142 };
143
144 static const struct alps_protocol_info alps_v3_rushmore_data = {
145 ALPS_PROTO_V3_RUSHMORE, 0x8f, 0x8f, ALPS_DUALPOINT
146 };
147
148 static const struct alps_protocol_info alps_v5_protocol_data = {
149 ALPS_PROTO_V5, 0xc8, 0xd8, 0
150 };
151
152 static const struct alps_protocol_info alps_v7_protocol_data = {
153 ALPS_PROTO_V7, 0x48, 0x48, ALPS_DUALPOINT
154 };
155
156 static void alps_set_abs_params_st(struct alps_data *priv,
157 struct input_dev *dev1);
158 static void alps_set_abs_params_mt(struct alps_data *priv,
159 struct input_dev *dev1);
160
161 /* Packet formats are described in Documentation/input/alps.txt */
162
163 static bool alps_is_valid_first_byte(struct alps_data *priv,
164 unsigned char data)
165 {
166 return (data & priv->mask0) == priv->byte0;
167 }
168
169 static void alps_report_buttons(struct input_dev *dev1, struct input_dev *dev2,
170 int left, int right, int middle)
171 {
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 */
179 dev = (dev2 && test_bit(BTN_LEFT, dev2->key)) ? dev2 : dev1;
180 input_report_key(dev, BTN_LEFT, left);
181
182 dev = (dev2 && test_bit(BTN_RIGHT, dev2->key)) ? dev2 : dev1;
183 input_report_key(dev, BTN_RIGHT, right);
184
185 dev = (dev2 && test_bit(BTN_MIDDLE, dev2->key)) ? dev2 : dev1;
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 */
192 if (dev2)
193 input_sync(dev2);
194 }
195
196 static void alps_process_packet_v1_v2(struct psmouse *psmouse)
197 {
198 struct alps_data *priv = psmouse->private;
199 unsigned char *packet = psmouse->packet;
200 struct input_dev *dev = psmouse->dev;
201 struct input_dev *dev2 = priv->dev2;
202 int x, y, z, ges, fin, left, right, middle;
203 int back = 0, forward = 0;
204
205 if (priv->proto_version == ALPS_PROTO_V1) {
206 left = packet[2] & 0x10;
207 right = packet[2] & 0x08;
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
221 if (priv->flags & ALPS_FW_BK_1) {
222 back = packet[0] & 0x10;
223 forward = packet[2] & 4;
224 }
225
226 if (priv->flags & ALPS_FW_BK_2) {
227 back = packet[3] & 4;
228 forward = packet[2] & 4;
229 if ((middle = forward && back))
230 forward = back = 0;
231 }
232
233 ges = packet[2] & 1;
234 fin = packet[2] & 2;
235
236 if ((priv->flags & ALPS_DUALPOINT) && z == 127) {
237 input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x));
238 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y));
239
240 alps_report_buttons(dev2, dev, left, right, middle);
241
242 input_sync(dev2);
243 return;
244 }
245
246 alps_report_buttons(dev, dev2, left, right, middle);
247
248 /* Convert hardware tap to a reasonable Z value */
249 if (ges && !fin)
250 z = 40;
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
266 if (z > 30)
267 input_report_key(dev, BTN_TOUCH, 1);
268 if (z < 25)
269 input_report_key(dev, BTN_TOUCH, 0);
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
279 if (priv->flags & ALPS_WHEEL)
280 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07));
281
282 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
283 input_report_key(dev, BTN_FORWARD, forward);
284 input_report_key(dev, BTN_BACK, back);
285 }
286
287 if (priv->flags & ALPS_FOUR_BUTTONS) {
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
294 input_sync(dev);
295 }
296
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.
302 * These two points are returned in fields->mt.
303 */
304 static void alps_process_bitmap_dolphin(struct alps_data *priv,
305 struct alps_fields *fields)
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
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));
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;
341 }
342 }
343
344 static 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;
358 point->num_bits = 0;
359 (*fingers)++;
360 }
361 point->num_bits++;
362 } else {
363 if (prev_bit)
364 point = high;
365 }
366 prev_bit = bit;
367 }
368 }
369
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.
377 * These points are returned in fields->mt when the return value
378 * is greater than 0.
379 */
380 static int alps_process_bitmap(struct alps_data *priv,
381 struct alps_fields *fields)
382 {
383 int i, fingers_x = 0, fingers_y = 0, fingers;
384 struct alps_bitmap_point x_low = {0,}, x_high = {0,};
385 struct alps_bitmap_point y_low = {0,}, y_high = {0,};
386
387 if (!fields->x_map || !fields->y_map)
388 return 0;
389
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);
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 /*
400 * If an axis reports only a single contact, we have overlapping or
401 * adjacent fingers. Divide the single contact between the two points.
402 */
403 if (fingers_x == 1) {
404 i = (x_low.num_bits - 1) / 2;
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) {
410 i = (y_low.num_bits - 1) / 2;
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);
414 }
415
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));
422
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));
429
430 /* y-bitmap order is reversed, except on rushmore */
431 if (priv->proto_version != ALPS_PROTO_V3_RUSHMORE) {
432 fields->mt[0].y = priv->y_max - fields->mt[0].y;
433 fields->mt[1].y = priv->y_max - fields->mt[1].y;
434 }
435
436 return fingers;
437 }
438
439 static void alps_set_slot(struct input_dev *dev, int slot, int x, int y)
440 {
441 input_mt_slot(dev, slot);
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);
445 }
446
447 static void alps_report_mt_data(struct psmouse *psmouse, int n)
448 {
449 struct alps_data *priv = psmouse->private;
450 struct input_dev *dev = psmouse->dev;
451 struct alps_fields *f = &priv->f;
452 int i, slot[MAX_TOUCHES];
453
454 input_mt_assign_slots(dev, slot, f->mt, n, 0);
455 for (i = 0; i < n; i++)
456 alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y);
457
458 input_mt_sync_frame(dev);
459 }
460
461 static 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
474 alps_report_mt_data(psmouse, (fingers <= 2) ? fingers : 2);
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
487 static 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
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
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
554 static 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
565 static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p,
566 struct psmouse *psmouse)
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
579 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) |
580 ((p[0] & 0x30) >> 4);
581 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f);
582 f->pressure = p[5] & 0x7f;
583
584 alps_decode_buttons_v3(f, p);
585
586 return 0;
587 }
588
589 static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p,
590 struct psmouse *psmouse)
591 {
592 alps_decode_pinnacle(f, p, psmouse);
593
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;
597 f->x_map |= (p[5] & 0x10) << 11;
598 f->y_map |= (p[5] & 0x20) << 6;
599
600 return 0;
601 }
602
603 static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p,
604 struct psmouse *psmouse)
605 {
606 u64 palm_data = 0;
607 struct alps_data *priv = psmouse->private;
608
609 f->first_mp = !!(p[0] & 0x02);
610 f->is_mp = !!(p[0] & 0x20);
611
612 if (!f->is_mp) {
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;
616 alps_decode_buttons_v3(f, p);
617 } else {
618 f->fingers = ((p[0] & 0x6) >> 1 |
619 (p[0] & 0x10) >> 2);
620
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 }
636
637 return 0;
638 }
639
640 static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse)
641 {
642 struct alps_data *priv = psmouse->private;
643 unsigned char *packet = psmouse->packet;
644 struct input_dev *dev2 = priv->dev2;
645 struct alps_fields *f = &priv->f;
646 int fingers = 0;
647
648 memset(f, 0, sizeof(*f));
649
650 priv->decode_fields(f, packet, psmouse);
651
652 /*
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.
657 */
658 if (priv->multi_packet) {
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 */
665 if (f->is_mp) {
666 fingers = f->fingers;
667 if (priv->proto_version == ALPS_PROTO_V3 ||
668 priv->proto_version == ALPS_PROTO_V3_RUSHMORE) {
669 if (alps_process_bitmap(priv, f) == 0)
670 fingers = 0; /* Use st data */
671
672 /* Now process position packet */
673 priv->decode_fields(f, priv->multi_data,
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 */
682 priv->decode_fields(f, priv->multi_data,
683 psmouse);
684
685 /*
686 * Since Dolphin's finger number is reliable,
687 * there is no need to compare with bmap_fn.
688 */
689 alps_process_bitmap_dolphin(priv, f);
690 }
691 } else {
692 priv->multi_packet = 0;
693 }
694 }
695
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 */
704 if (f->is_mp)
705 return;
706
707 if (!priv->multi_packet && f->first_mp) {
708 priv->multi_packet = 1;
709 memcpy(priv->multi_data, packet, sizeof(priv->multi_data));
710 return;
711 }
712
713 priv->multi_packet = 0;
714
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 */
721 if (f->st.x && f->st.y && !f->pressure)
722 return;
723
724 alps_report_semi_mt_data(psmouse, fingers);
725
726 if ((priv->flags & ALPS_DUALPOINT) &&
727 !(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) {
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);
731 input_sync(dev2);
732 }
733 }
734
735 static 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
752 alps_process_touchpad_packet_v3_v5(psmouse);
753 }
754
755 static 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 */
771 if (!(priv->flags & ALPS_DUALPOINT)) {
772 psmouse_warn(psmouse,
773 "Rejected trackstick packet from non DualPoint device");
774 return;
775 }
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
828 static void alps_process_packet_v4(struct psmouse *psmouse)
829 {
830 struct alps_data *priv = psmouse->private;
831 unsigned char *packet = psmouse->packet;
832 struct alps_fields *f = &priv->f;
833 int offset;
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
855 f->x_map = ((priv->multi_data[2] & 0x1f) << 10) |
856 ((priv->multi_data[3] & 0x60) << 3) |
857 ((priv->multi_data[0] & 0x3f) << 2) |
858 ((priv->multi_data[1] & 0x60) >> 5);
859 f->y_map = ((priv->multi_data[5] & 0x01) << 10) |
860 ((priv->multi_data[3] & 0x1f) << 5) |
861 (priv->multi_data[1] & 0x1f);
862
863 f->fingers = alps_process_bitmap(priv, f);
864 }
865
866 f->left = !!(packet[4] & 0x01);
867 f->right = !!(packet[4] & 0x02);
868
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;
873
874 alps_report_semi_mt_data(psmouse, f->fingers);
875 }
876
877 static 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
890 static 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
908 static 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
948 static int alps_get_mt_count(struct input_mt_pos *mt)
949 {
950 int i, fingers = 0;
951
952 for (i = 0; i < MAX_TOUCHES; i++) {
953 if (mt[i].x != 0 || mt[i].y != 0)
954 fingers++;
955 }
956
957 return fingers;
958 }
959
960 static int alps_decode_packet_v7(struct alps_fields *f,
961 unsigned char *p,
962 struct psmouse *psmouse)
963 {
964 struct alps_data *priv = psmouse->private;
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;
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;
992
993 alps_get_finger_coordinate_v7(f->mt, p, pkt_id);
994
995 if (pkt_id == V7_PACKET_ID_TWO)
996 f->fingers = alps_get_mt_count(f->mt);
997 else /* pkt_id == V7_PACKET_ID_MULTI */
998 f->fingers = 3 + (p[5] & 0x03);
999
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
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
1019 return 0;
1020 }
1021
1022 static 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
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
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
1056 static 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
1078 static 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
1088 static DEFINE_MUTEX(alps_mutex);
1089
1090 static 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
1146 out:
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
1157 static void alps_report_bare_ps2_packet(struct psmouse *psmouse,
1158 unsigned char packet[],
1159 bool report_buttons)
1160 {
1161 struct alps_data *priv = psmouse->private;
1162 struct input_dev *dev;
1163
1164 /* Figure out which device to use to report the bare packet */
1165 if (priv->proto_version == ALPS_PROTO_V2 &&
1166 (priv->flags & ALPS_DUALPOINT)) {
1167 /* On V2 devices the DualPoint Stick reports bare packets */
1168 dev = priv->dev2;
1169 } else if (unlikely(IS_ERR_OR_NULL(priv->dev3))) {
1170 /* Register dev3 mouse if we received PS/2 packet first time */
1171 if (!IS_ERR(priv->dev3))
1172 psmouse_queue_work(psmouse, &priv->dev3_register_work,
1173 0);
1174 return;
1175 } else {
1176 dev = priv->dev3;
1177 }
1178
1179 if (report_buttons)
1180 alps_report_buttons(dev, NULL,
1181 packet[0] & 1, packet[0] & 2, packet[0] & 4);
1182
1183 input_report_rel(dev, REL_X,
1184 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0);
1185 input_report_rel(dev, REL_Y,
1186 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0);
1187
1188 input_sync(dev);
1189 }
1190
1191 static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse)
1192 {
1193 struct alps_data *priv = psmouse->private;
1194
1195 if (psmouse->pktcnt < 6)
1196 return PSMOUSE_GOOD_DATA;
1197
1198 if (psmouse->pktcnt == 6) {
1199 /*
1200 * Start a timer to flush the packet if it ends up last
1201 * 6-byte packet in the stream. Timer needs to fire
1202 * psmouse core times out itself. 20 ms should be enough
1203 * to decide if we are getting more data or not.
1204 */
1205 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20));
1206 return PSMOUSE_GOOD_DATA;
1207 }
1208
1209 del_timer(&priv->timer);
1210
1211 if (psmouse->packet[6] & 0x80) {
1212
1213 /*
1214 * Highest bit is set - that means we either had
1215 * complete ALPS packet and this is start of the
1216 * next packet or we got garbage.
1217 */
1218
1219 if (((psmouse->packet[3] |
1220 psmouse->packet[4] |
1221 psmouse->packet[5]) & 0x80) ||
1222 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) {
1223 psmouse_dbg(psmouse,
1224 "refusing packet %4ph (suspected interleaved ps/2)\n",
1225 psmouse->packet + 3);
1226 return PSMOUSE_BAD_DATA;
1227 }
1228
1229 priv->process_packet(psmouse);
1230
1231 /* Continue with the next packet */
1232 psmouse->packet[0] = psmouse->packet[6];
1233 psmouse->pktcnt = 1;
1234
1235 } else {
1236
1237 /*
1238 * High bit is 0 - that means that we indeed got a PS/2
1239 * packet in the middle of ALPS packet.
1240 *
1241 * There is also possibility that we got 6-byte ALPS
1242 * packet followed by 3-byte packet from trackpoint. We
1243 * can not distinguish between these 2 scenarios but
1244 * because the latter is unlikely to happen in course of
1245 * normal operation (user would need to press all
1246 * buttons on the pad and start moving trackpoint
1247 * without touching the pad surface) we assume former.
1248 * Even if we are wrong the wost thing that would happen
1249 * the cursor would jump but we should not get protocol
1250 * de-synchronization.
1251 */
1252
1253 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3],
1254 false);
1255
1256 /*
1257 * Continue with the standard ALPS protocol handling,
1258 * but make sure we won't process it as an interleaved
1259 * packet again, which may happen if all buttons are
1260 * pressed. To avoid this let's reset the 4th bit which
1261 * is normally 1.
1262 */
1263 psmouse->packet[3] = psmouse->packet[6] & 0xf7;
1264 psmouse->pktcnt = 4;
1265 }
1266
1267 return PSMOUSE_GOOD_DATA;
1268 }
1269
1270 static void alps_flush_packet(unsigned long data)
1271 {
1272 struct psmouse *psmouse = (struct psmouse *)data;
1273 struct alps_data *priv = psmouse->private;
1274
1275 serio_pause_rx(psmouse->ps2dev.serio);
1276
1277 if (psmouse->pktcnt == psmouse->pktsize) {
1278
1279 /*
1280 * We did not any more data in reasonable amount of time.
1281 * Validate the last 3 bytes and process as a standard
1282 * ALPS packet.
1283 */
1284 if ((psmouse->packet[3] |
1285 psmouse->packet[4] |
1286 psmouse->packet[5]) & 0x80) {
1287 psmouse_dbg(psmouse,
1288 "refusing packet %3ph (suspected interleaved ps/2)\n",
1289 psmouse->packet + 3);
1290 } else {
1291 priv->process_packet(psmouse);
1292 }
1293 psmouse->pktcnt = 0;
1294 }
1295
1296 serio_continue_rx(psmouse->ps2dev.serio);
1297 }
1298
1299 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
1300 {
1301 struct alps_data *priv = psmouse->private;
1302
1303 /*
1304 * Check if we are dealing with a bare PS/2 packet, presumably from
1305 * a device connected to the external PS/2 port. Because bare PS/2
1306 * protocol does not have enough constant bits to self-synchronize
1307 * properly we only do this if the device is fully synchronized.
1308 */
1309 if (!psmouse->out_of_sync_cnt && (psmouse->packet[0] & 0xc8) == 0x08) {
1310 if (psmouse->pktcnt == 3) {
1311 alps_report_bare_ps2_packet(psmouse, psmouse->packet,
1312 true);
1313 return PSMOUSE_FULL_PACKET;
1314 }
1315 return PSMOUSE_GOOD_DATA;
1316 }
1317
1318 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */
1319
1320 if ((priv->flags & ALPS_PS2_INTERLEAVED) &&
1321 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) {
1322 return alps_handle_interleaved_ps2(psmouse);
1323 }
1324
1325 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) {
1326 psmouse_dbg(psmouse,
1327 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n",
1328 psmouse->packet[0], priv->mask0, priv->byte0);
1329 return PSMOUSE_BAD_DATA;
1330 }
1331
1332 /* Bytes 2 - pktsize should have 0 in the highest bit */
1333 if (priv->proto_version < ALPS_PROTO_V5 &&
1334 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize &&
1335 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) {
1336 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
1337 psmouse->pktcnt - 1,
1338 psmouse->packet[psmouse->pktcnt - 1]);
1339
1340 if (priv->proto_version == ALPS_PROTO_V3_RUSHMORE &&
1341 psmouse->pktcnt == psmouse->pktsize) {
1342 /*
1343 * Some Dell boxes, such as Latitude E6440 or E7440
1344 * with closed lid, quite often smash last byte of
1345 * otherwise valid packet with 0xff. Given that the
1346 * next packet is very likely to be valid let's
1347 * report PSMOUSE_FULL_PACKET but not process data,
1348 * rather than reporting PSMOUSE_BAD_DATA and
1349 * filling the logs.
1350 */
1351 return PSMOUSE_FULL_PACKET;
1352 }
1353
1354 return PSMOUSE_BAD_DATA;
1355 }
1356
1357 if (priv->proto_version == ALPS_PROTO_V7 &&
1358 !alps_is_valid_package_v7(psmouse)) {
1359 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
1360 psmouse->pktcnt - 1,
1361 psmouse->packet[psmouse->pktcnt - 1]);
1362 return PSMOUSE_BAD_DATA;
1363 }
1364
1365 if (psmouse->pktcnt == psmouse->pktsize) {
1366 priv->process_packet(psmouse);
1367 return PSMOUSE_FULL_PACKET;
1368 }
1369
1370 return PSMOUSE_GOOD_DATA;
1371 }
1372
1373 static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble)
1374 {
1375 struct ps2dev *ps2dev = &psmouse->ps2dev;
1376 struct alps_data *priv = psmouse->private;
1377 int command;
1378 unsigned char *param;
1379 unsigned char dummy[4];
1380
1381 BUG_ON(nibble > 0xf);
1382
1383 command = priv->nibble_commands[nibble].command;
1384 param = (command & 0x0f00) ?
1385 dummy : (unsigned char *)&priv->nibble_commands[nibble].data;
1386
1387 if (ps2_command(ps2dev, param, command))
1388 return -1;
1389
1390 return 0;
1391 }
1392
1393 static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr)
1394 {
1395 struct ps2dev *ps2dev = &psmouse->ps2dev;
1396 struct alps_data *priv = psmouse->private;
1397 int i, nibble;
1398
1399 if (ps2_command(ps2dev, NULL, priv->addr_command))
1400 return -1;
1401
1402 for (i = 12; i >= 0; i -= 4) {
1403 nibble = (addr >> i) & 0xf;
1404 if (alps_command_mode_send_nibble(psmouse, nibble))
1405 return -1;
1406 }
1407
1408 return 0;
1409 }
1410
1411 static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
1412 {
1413 struct ps2dev *ps2dev = &psmouse->ps2dev;
1414 unsigned char param[4];
1415
1416 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1417 return -1;
1418
1419 /*
1420 * The address being read is returned in the first two bytes
1421 * of the result. Check that this address matches the expected
1422 * address.
1423 */
1424 if (addr != ((param[0] << 8) | param[1]))
1425 return -1;
1426
1427 return param[2];
1428 }
1429
1430 static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
1431 {
1432 if (alps_command_mode_set_addr(psmouse, addr))
1433 return -1;
1434 return __alps_command_mode_read_reg(psmouse, addr);
1435 }
1436
1437 static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value)
1438 {
1439 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf))
1440 return -1;
1441 if (alps_command_mode_send_nibble(psmouse, value & 0xf))
1442 return -1;
1443 return 0;
1444 }
1445
1446 static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr,
1447 u8 value)
1448 {
1449 if (alps_command_mode_set_addr(psmouse, addr))
1450 return -1;
1451 return __alps_command_mode_write_reg(psmouse, value);
1452 }
1453
1454 static int alps_rpt_cmd(struct psmouse *psmouse, int init_command,
1455 int repeated_command, unsigned char *param)
1456 {
1457 struct ps2dev *ps2dev = &psmouse->ps2dev;
1458
1459 param[0] = 0;
1460 if (init_command && ps2_command(ps2dev, param, init_command))
1461 return -EIO;
1462
1463 if (ps2_command(ps2dev, NULL, repeated_command) ||
1464 ps2_command(ps2dev, NULL, repeated_command) ||
1465 ps2_command(ps2dev, NULL, repeated_command))
1466 return -EIO;
1467
1468 param[0] = param[1] = param[2] = 0xff;
1469 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1470 return -EIO;
1471
1472 psmouse_dbg(psmouse, "%2.2X report: %3ph\n",
1473 repeated_command, param);
1474 return 0;
1475 }
1476
1477 static bool alps_check_valid_firmware_id(unsigned char id[])
1478 {
1479 if (id[0] == 0x73)
1480 return true;
1481
1482 if (id[0] == 0x88 &&
1483 (id[1] == 0x07 ||
1484 id[1] == 0x08 ||
1485 (id[1] & 0xf0) == 0xb0 ||
1486 (id[1] & 0xf0) == 0xc0)) {
1487 return true;
1488 }
1489
1490 return false;
1491 }
1492
1493 static int alps_enter_command_mode(struct psmouse *psmouse)
1494 {
1495 unsigned char param[4];
1496
1497 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) {
1498 psmouse_err(psmouse, "failed to enter command mode\n");
1499 return -1;
1500 }
1501
1502 if (!alps_check_valid_firmware_id(param)) {
1503 psmouse_dbg(psmouse,
1504 "unknown response while entering command mode\n");
1505 return -1;
1506 }
1507 return 0;
1508 }
1509
1510 static inline int alps_exit_command_mode(struct psmouse *psmouse)
1511 {
1512 struct ps2dev *ps2dev = &psmouse->ps2dev;
1513 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM))
1514 return -1;
1515 return 0;
1516 }
1517
1518 /*
1519 * For DualPoint devices select the device that should respond to
1520 * subsequent commands. It looks like glidepad is behind stickpointer,
1521 * I'd thought it would be other way around...
1522 */
1523 static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable)
1524 {
1525 struct ps2dev *ps2dev = &psmouse->ps2dev;
1526 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11;
1527
1528 if (ps2_command(ps2dev, NULL, cmd) ||
1529 ps2_command(ps2dev, NULL, cmd) ||
1530 ps2_command(ps2dev, NULL, cmd) ||
1531 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1532 return -1;
1533
1534 /* we may get 3 more bytes, just ignore them */
1535 ps2_drain(ps2dev, 3, 100);
1536
1537 return 0;
1538 }
1539
1540 static int alps_absolute_mode_v1_v2(struct psmouse *psmouse)
1541 {
1542 struct ps2dev *ps2dev = &psmouse->ps2dev;
1543
1544 /* Try ALPS magic knock - 4 disable before enable */
1545 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1546 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1547 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1548 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1549 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE))
1550 return -1;
1551
1552 /*
1553 * Switch mouse to poll (remote) mode so motion data will not
1554 * get in our way
1555 */
1556 return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL);
1557 }
1558
1559 static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word)
1560 {
1561 int i, nibble;
1562
1563 /*
1564 * b0-b11 are valid bits, send sequence is inverse.
1565 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1
1566 */
1567 for (i = 0; i <= 8; i += 4) {
1568 nibble = (word >> i) & 0xf;
1569 if (alps_command_mode_send_nibble(psmouse, nibble))
1570 return -1;
1571 }
1572
1573 return 0;
1574 }
1575
1576 static int alps_monitor_mode_write_reg(struct psmouse *psmouse,
1577 u16 addr, u16 value)
1578 {
1579 struct ps2dev *ps2dev = &psmouse->ps2dev;
1580
1581 /* 0x0A0 is the command to write the word */
1582 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) ||
1583 alps_monitor_mode_send_word(psmouse, 0x0A0) ||
1584 alps_monitor_mode_send_word(psmouse, addr) ||
1585 alps_monitor_mode_send_word(psmouse, value) ||
1586 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1587 return -1;
1588
1589 return 0;
1590 }
1591
1592 static int alps_monitor_mode(struct psmouse *psmouse, bool enable)
1593 {
1594 struct ps2dev *ps2dev = &psmouse->ps2dev;
1595
1596 if (enable) {
1597 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */
1598 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
1599 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) ||
1600 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1601 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1602 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
1603 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1604 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
1605 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO))
1606 return -1;
1607 } else {
1608 /* EC to exit monitor mode */
1609 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP))
1610 return -1;
1611 }
1612
1613 return 0;
1614 }
1615
1616 static int alps_absolute_mode_v6(struct psmouse *psmouse)
1617 {
1618 u16 reg_val = 0x181;
1619 int ret = -1;
1620
1621 /* enter monitor mode, to write the register */
1622 if (alps_monitor_mode(psmouse, true))
1623 return -1;
1624
1625 ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val);
1626
1627 if (alps_monitor_mode(psmouse, false))
1628 ret = -1;
1629
1630 return ret;
1631 }
1632
1633 static int alps_get_status(struct psmouse *psmouse, char *param)
1634 {
1635 /* Get status: 0xF5 0xF5 0xF5 0xE9 */
1636 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param))
1637 return -1;
1638
1639 return 0;
1640 }
1641
1642 /*
1643 * Turn touchpad tapping on or off. The sequences are:
1644 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable,
1645 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable.
1646 * My guess that 0xE9 (GetInfo) is here as a sync point.
1647 * For models that also have stickpointer (DualPoints) its tapping
1648 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but
1649 * we don't fiddle with it.
1650 */
1651 static int alps_tap_mode(struct psmouse *psmouse, int enable)
1652 {
1653 struct ps2dev *ps2dev = &psmouse->ps2dev;
1654 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES;
1655 unsigned char tap_arg = enable ? 0x0A : 0x00;
1656 unsigned char param[4];
1657
1658 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) ||
1659 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1660 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1661 ps2_command(ps2dev, &tap_arg, cmd))
1662 return -1;
1663
1664 if (alps_get_status(psmouse, param))
1665 return -1;
1666
1667 return 0;
1668 }
1669
1670 /*
1671 * alps_poll() - poll the touchpad for current motion packet.
1672 * Used in resync.
1673 */
1674 static int alps_poll(struct psmouse *psmouse)
1675 {
1676 struct alps_data *priv = psmouse->private;
1677 unsigned char buf[sizeof(psmouse->packet)];
1678 bool poll_failed;
1679
1680 if (priv->flags & ALPS_PASS)
1681 alps_passthrough_mode_v2(psmouse, true);
1682
1683 poll_failed = ps2_command(&psmouse->ps2dev, buf,
1684 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0;
1685
1686 if (priv->flags & ALPS_PASS)
1687 alps_passthrough_mode_v2(psmouse, false);
1688
1689 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0)
1690 return -1;
1691
1692 if ((psmouse->badbyte & 0xc8) == 0x08) {
1693 /*
1694 * Poll the track stick ...
1695 */
1696 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8)))
1697 return -1;
1698 }
1699
1700 memcpy(psmouse->packet, buf, sizeof(buf));
1701 return 0;
1702 }
1703
1704 static int alps_hw_init_v1_v2(struct psmouse *psmouse)
1705 {
1706 struct alps_data *priv = psmouse->private;
1707
1708 if ((priv->flags & ALPS_PASS) &&
1709 alps_passthrough_mode_v2(psmouse, true)) {
1710 return -1;
1711 }
1712
1713 if (alps_tap_mode(psmouse, true)) {
1714 psmouse_warn(psmouse, "Failed to enable hardware tapping\n");
1715 return -1;
1716 }
1717
1718 if (alps_absolute_mode_v1_v2(psmouse)) {
1719 psmouse_err(psmouse, "Failed to enable absolute mode\n");
1720 return -1;
1721 }
1722
1723 if ((priv->flags & ALPS_PASS) &&
1724 alps_passthrough_mode_v2(psmouse, false)) {
1725 return -1;
1726 }
1727
1728 /* ALPS needs stream mode, otherwise it won't report any data */
1729 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) {
1730 psmouse_err(psmouse, "Failed to enable stream mode\n");
1731 return -1;
1732 }
1733
1734 return 0;
1735 }
1736
1737 static int alps_hw_init_v6(struct psmouse *psmouse)
1738 {
1739 unsigned char param[2] = {0xC8, 0x14};
1740
1741 /* Enter passthrough mode to let trackpoint enter 6byte raw mode */
1742 if (alps_passthrough_mode_v2(psmouse, true))
1743 return -1;
1744
1745 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1746 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1747 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1748 ps2_command(&psmouse->ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
1749 ps2_command(&psmouse->ps2dev, &param[1], PSMOUSE_CMD_SETRATE))
1750 return -1;
1751
1752 if (alps_passthrough_mode_v2(psmouse, false))
1753 return -1;
1754
1755 if (alps_absolute_mode_v6(psmouse)) {
1756 psmouse_err(psmouse, "Failed to enable absolute mode\n");
1757 return -1;
1758 }
1759
1760 return 0;
1761 }
1762
1763 /*
1764 * Enable or disable passthrough mode to the trackstick.
1765 */
1766 static int alps_passthrough_mode_v3(struct psmouse *psmouse,
1767 int reg_base, bool enable)
1768 {
1769 int reg_val, ret = -1;
1770
1771 if (alps_enter_command_mode(psmouse))
1772 return -1;
1773
1774 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008);
1775 if (reg_val == -1)
1776 goto error;
1777
1778 if (enable)
1779 reg_val |= 0x01;
1780 else
1781 reg_val &= ~0x01;
1782
1783 ret = __alps_command_mode_write_reg(psmouse, reg_val);
1784
1785 error:
1786 if (alps_exit_command_mode(psmouse))
1787 ret = -1;
1788 return ret;
1789 }
1790
1791 /* Must be in command mode when calling this function */
1792 static int alps_absolute_mode_v3(struct psmouse *psmouse)
1793 {
1794 int reg_val;
1795
1796 reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
1797 if (reg_val == -1)
1798 return -1;
1799
1800 reg_val |= 0x06;
1801 if (__alps_command_mode_write_reg(psmouse, reg_val))
1802 return -1;
1803
1804 return 0;
1805 }
1806
1807 static int alps_probe_trackstick_v3(struct psmouse *psmouse, int reg_base)
1808 {
1809 int ret = -EIO, reg_val;
1810
1811 if (alps_enter_command_mode(psmouse))
1812 goto error;
1813
1814 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08);
1815 if (reg_val == -1)
1816 goto error;
1817
1818 /* bit 7: trackstick is present */
1819 ret = reg_val & 0x80 ? 0 : -ENODEV;
1820
1821 error:
1822 alps_exit_command_mode(psmouse);
1823 return ret;
1824 }
1825
1826 static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base)
1827 {
1828 struct ps2dev *ps2dev = &psmouse->ps2dev;
1829 int ret = 0;
1830 unsigned char param[4];
1831
1832 if (alps_passthrough_mode_v3(psmouse, reg_base, true))
1833 return -EIO;
1834
1835 /*
1836 * E7 report for the trackstick
1837 *
1838 * There have been reports of failures to seem to trace back
1839 * to the above trackstick check failing. When these occur
1840 * this E7 report fails, so when that happens we continue
1841 * with the assumption that there isn't a trackstick after
1842 * all.
1843 */
1844 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) {
1845 psmouse_warn(psmouse, "Failed to initialize trackstick (E7 report failed)\n");
1846 ret = -ENODEV;
1847 } else {
1848 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param);
1849
1850 /*
1851 * Not sure what this does, but it is absolutely
1852 * essential. Without it, the touchpad does not
1853 * work at all and the trackstick just emits normal
1854 * PS/2 packets.
1855 */
1856 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1857 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1858 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1859 alps_command_mode_send_nibble(psmouse, 0x9) ||
1860 alps_command_mode_send_nibble(psmouse, 0x4)) {
1861 psmouse_err(psmouse,
1862 "Error sending magic E6 sequence\n");
1863 ret = -EIO;
1864 goto error;
1865 }
1866
1867 /*
1868 * This ensures the trackstick packets are in the format
1869 * supported by this driver. If bit 1 isn't set the packet
1870 * format is different.
1871 */
1872 if (alps_enter_command_mode(psmouse) ||
1873 alps_command_mode_write_reg(psmouse,
1874 reg_base + 0x08, 0x82) ||
1875 alps_exit_command_mode(psmouse))
1876 ret = -EIO;
1877 }
1878
1879 error:
1880 if (alps_passthrough_mode_v3(psmouse, reg_base, false))
1881 ret = -EIO;
1882
1883 return ret;
1884 }
1885
1886 static int alps_hw_init_v3(struct psmouse *psmouse)
1887 {
1888 struct ps2dev *ps2dev = &psmouse->ps2dev;
1889 int reg_val;
1890 unsigned char param[4];
1891
1892 reg_val = alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE);
1893 if (reg_val == -EIO)
1894 goto error;
1895
1896 if (reg_val == 0 &&
1897 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO)
1898 goto error;
1899
1900 if (alps_enter_command_mode(psmouse) ||
1901 alps_absolute_mode_v3(psmouse)) {
1902 psmouse_err(psmouse, "Failed to enter absolute mode\n");
1903 goto error;
1904 }
1905
1906 reg_val = alps_command_mode_read_reg(psmouse, 0x0006);
1907 if (reg_val == -1)
1908 goto error;
1909 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
1910 goto error;
1911
1912 reg_val = alps_command_mode_read_reg(psmouse, 0x0007);
1913 if (reg_val == -1)
1914 goto error;
1915 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
1916 goto error;
1917
1918 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1)
1919 goto error;
1920 if (__alps_command_mode_write_reg(psmouse, 0x04))
1921 goto error;
1922
1923 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1)
1924 goto error;
1925 if (__alps_command_mode_write_reg(psmouse, 0x03))
1926 goto error;
1927
1928 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1)
1929 goto error;
1930 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03))
1931 goto error;
1932
1933 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1)
1934 goto error;
1935 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04))
1936 goto error;
1937
1938 alps_exit_command_mode(psmouse);
1939
1940 /* Set rate and enable data reporting */
1941 param[0] = 0x64;
1942 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
1943 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
1944 psmouse_err(psmouse, "Failed to enable data reporting\n");
1945 return -1;
1946 }
1947
1948 return 0;
1949
1950 error:
1951 /*
1952 * Leaving the touchpad in command mode will essentially render
1953 * it unusable until the machine reboots, so exit it here just
1954 * to be safe
1955 */
1956 alps_exit_command_mode(psmouse);
1957 return -1;
1958 }
1959
1960 static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch)
1961 {
1962 int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys;
1963 struct alps_data *priv = psmouse->private;
1964
1965 reg = alps_command_mode_read_reg(psmouse, reg_pitch);
1966 if (reg < 0)
1967 return reg;
1968
1969 x_pitch = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */
1970 x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */
1971
1972 y_pitch = (char)reg >> 4; /* sign extend upper 4 bits */
1973 y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */
1974
1975 reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1);
1976 if (reg < 0)
1977 return reg;
1978
1979 x_electrode = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */
1980 x_electrode = 17 + x_electrode;
1981
1982 y_electrode = (char)reg >> 4; /* sign extend upper 4 bits */
1983 y_electrode = 13 + y_electrode;
1984
1985 x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */
1986 y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */
1987
1988 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */
1989 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */
1990
1991 psmouse_dbg(psmouse,
1992 "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n",
1993 x_pitch, y_pitch, x_electrode, y_electrode,
1994 x_phys / 10, y_phys / 10, priv->x_res, priv->y_res);
1995
1996 return 0;
1997 }
1998
1999 static int alps_hw_init_rushmore_v3(struct psmouse *psmouse)
2000 {
2001 struct alps_data *priv = psmouse->private;
2002 struct ps2dev *ps2dev = &psmouse->ps2dev;
2003 int reg_val, ret = -1;
2004
2005 if (priv->flags & ALPS_DUALPOINT) {
2006 reg_val = alps_setup_trackstick_v3(psmouse,
2007 ALPS_REG_BASE_RUSHMORE);
2008 if (reg_val == -EIO)
2009 goto error;
2010 }
2011
2012 if (alps_enter_command_mode(psmouse) ||
2013 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 ||
2014 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00))
2015 goto error;
2016
2017 if (alps_get_v3_v7_resolution(psmouse, 0xc2da))
2018 goto error;
2019
2020 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6);
2021 if (reg_val == -1)
2022 goto error;
2023 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd))
2024 goto error;
2025
2026 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64))
2027 goto error;
2028
2029 /* enter absolute mode */
2030 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4);
2031 if (reg_val == -1)
2032 goto error;
2033 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02))
2034 goto error;
2035
2036 alps_exit_command_mode(psmouse);
2037 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
2038
2039 error:
2040 alps_exit_command_mode(psmouse);
2041 return ret;
2042 }
2043
2044 /* Must be in command mode when calling this function */
2045 static int alps_absolute_mode_v4(struct psmouse *psmouse)
2046 {
2047 int reg_val;
2048
2049 reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
2050 if (reg_val == -1)
2051 return -1;
2052
2053 reg_val |= 0x02;
2054 if (__alps_command_mode_write_reg(psmouse, reg_val))
2055 return -1;
2056
2057 return 0;
2058 }
2059
2060 static int alps_hw_init_v4(struct psmouse *psmouse)
2061 {
2062 struct ps2dev *ps2dev = &psmouse->ps2dev;
2063 unsigned char param[4];
2064
2065 if (alps_enter_command_mode(psmouse))
2066 goto error;
2067
2068 if (alps_absolute_mode_v4(psmouse)) {
2069 psmouse_err(psmouse, "Failed to enter absolute mode\n");
2070 goto error;
2071 }
2072
2073 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c))
2074 goto error;
2075
2076 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03))
2077 goto error;
2078
2079 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03))
2080 goto error;
2081
2082 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15))
2083 goto error;
2084
2085 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01))
2086 goto error;
2087
2088 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03))
2089 goto error;
2090
2091 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03))
2092 goto error;
2093
2094 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03))
2095 goto error;
2096
2097 alps_exit_command_mode(psmouse);
2098
2099 /*
2100 * This sequence changes the output from a 9-byte to an
2101 * 8-byte format. All the same data seems to be present,
2102 * just in a more compact format.
2103 */
2104 param[0] = 0xc8;
2105 param[1] = 0x64;
2106 param[2] = 0x50;
2107 if (ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
2108 ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE) ||
2109 ps2_command(ps2dev, &param[2], PSMOUSE_CMD_SETRATE) ||
2110 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID))
2111 return -1;
2112
2113 /* Set rate and enable data reporting */
2114 param[0] = 0x64;
2115 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
2116 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
2117 psmouse_err(psmouse, "Failed to enable data reporting\n");
2118 return -1;
2119 }
2120
2121 return 0;
2122
2123 error:
2124 /*
2125 * Leaving the touchpad in command mode will essentially render
2126 * it unusable until the machine reboots, so exit it here just
2127 * to be safe
2128 */
2129 alps_exit_command_mode(psmouse);
2130 return -1;
2131 }
2132
2133 static int alps_dolphin_get_device_area(struct psmouse *psmouse,
2134 struct alps_data *priv)
2135 {
2136 struct ps2dev *ps2dev = &psmouse->ps2dev;
2137 unsigned char param[4] = {0};
2138 int num_x_electrode, num_y_electrode;
2139
2140 if (alps_enter_command_mode(psmouse))
2141 return -1;
2142
2143 param[0] = 0x0a;
2144 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
2145 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
2146 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
2147 ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
2148 ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE))
2149 return -1;
2150
2151 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
2152 return -1;
2153
2154 /*
2155 * Dolphin's sensor line number is not fixed. It can be calculated
2156 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET.
2157 * Further more, we can get device's x_max and y_max by multiplying
2158 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE.
2159 *
2160 * e.g. When we get register's sensor_x = 11 & sensor_y = 8,
2161 * real sensor line number X = 11 + 8 = 19, and
2162 * real sensor line number Y = 8 + 1 = 9.
2163 * So, x_max = (19 - 1) * 64 = 1152, and
2164 * y_max = (9 - 1) * 64 = 512.
2165 */
2166 num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F);
2167 num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F);
2168 priv->x_bits = num_x_electrode;
2169 priv->y_bits = num_y_electrode;
2170 priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE;
2171 priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE;
2172
2173 if (alps_exit_command_mode(psmouse))
2174 return -1;
2175
2176 return 0;
2177 }
2178
2179 static int alps_hw_init_dolphin_v1(struct psmouse *psmouse)
2180 {
2181 struct ps2dev *ps2dev = &psmouse->ps2dev;
2182 unsigned char param[2];
2183
2184 /* This is dolphin "v1" as empirically defined by florin9doi */
2185 param[0] = 0x64;
2186 param[1] = 0x28;
2187
2188 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
2189 ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
2190 ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE))
2191 return -1;
2192
2193 return 0;
2194 }
2195
2196 static int alps_hw_init_v7(struct psmouse *psmouse)
2197 {
2198 struct ps2dev *ps2dev = &psmouse->ps2dev;
2199 int reg_val, ret = -1;
2200
2201 if (alps_enter_command_mode(psmouse) ||
2202 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1)
2203 goto error;
2204
2205 if (alps_get_v3_v7_resolution(psmouse, 0xc397))
2206 goto error;
2207
2208 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64))
2209 goto error;
2210
2211 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4);
2212 if (reg_val == -1)
2213 goto error;
2214 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02))
2215 goto error;
2216
2217 alps_exit_command_mode(psmouse);
2218 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
2219
2220 error:
2221 alps_exit_command_mode(psmouse);
2222 return ret;
2223 }
2224
2225 static int alps_set_protocol(struct psmouse *psmouse,
2226 struct alps_data *priv,
2227 const struct alps_protocol_info *protocol)
2228 {
2229 psmouse->private = priv;
2230
2231 setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse);
2232
2233 priv->proto_version = protocol->version;
2234 priv->byte0 = protocol->byte0;
2235 priv->mask0 = protocol->mask0;
2236 priv->flags = protocol->flags;
2237
2238 priv->x_max = 2000;
2239 priv->y_max = 1400;
2240 priv->x_bits = 15;
2241 priv->y_bits = 11;
2242
2243 switch (priv->proto_version) {
2244 case ALPS_PROTO_V1:
2245 case ALPS_PROTO_V2:
2246 priv->hw_init = alps_hw_init_v1_v2;
2247 priv->process_packet = alps_process_packet_v1_v2;
2248 priv->set_abs_params = alps_set_abs_params_st;
2249 priv->x_max = 1023;
2250 priv->y_max = 767;
2251 break;
2252
2253 case ALPS_PROTO_V3:
2254 priv->hw_init = alps_hw_init_v3;
2255 priv->process_packet = alps_process_packet_v3;
2256 priv->set_abs_params = alps_set_abs_params_mt;
2257 priv->decode_fields = alps_decode_pinnacle;
2258 priv->nibble_commands = alps_v3_nibble_commands;
2259 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2260 break;
2261
2262 case ALPS_PROTO_V3_RUSHMORE:
2263 priv->hw_init = alps_hw_init_rushmore_v3;
2264 priv->process_packet = alps_process_packet_v3;
2265 priv->set_abs_params = alps_set_abs_params_mt;
2266 priv->decode_fields = alps_decode_rushmore;
2267 priv->nibble_commands = alps_v3_nibble_commands;
2268 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2269 priv->x_bits = 16;
2270 priv->y_bits = 12;
2271
2272 if (alps_probe_trackstick_v3(psmouse,
2273 ALPS_REG_BASE_RUSHMORE) < 0)
2274 priv->flags &= ~ALPS_DUALPOINT;
2275
2276 break;
2277
2278 case ALPS_PROTO_V4:
2279 priv->hw_init = alps_hw_init_v4;
2280 priv->process_packet = alps_process_packet_v4;
2281 priv->set_abs_params = alps_set_abs_params_mt;
2282 priv->nibble_commands = alps_v4_nibble_commands;
2283 priv->addr_command = PSMOUSE_CMD_DISABLE;
2284 break;
2285
2286 case ALPS_PROTO_V5:
2287 priv->hw_init = alps_hw_init_dolphin_v1;
2288 priv->process_packet = alps_process_touchpad_packet_v3_v5;
2289 priv->decode_fields = alps_decode_dolphin;
2290 priv->set_abs_params = alps_set_abs_params_mt;
2291 priv->nibble_commands = alps_v3_nibble_commands;
2292 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2293 priv->x_bits = 23;
2294 priv->y_bits = 12;
2295
2296 if (alps_dolphin_get_device_area(psmouse, priv))
2297 return -EIO;
2298
2299 break;
2300
2301 case ALPS_PROTO_V6:
2302 priv->hw_init = alps_hw_init_v6;
2303 priv->process_packet = alps_process_packet_v6;
2304 priv->set_abs_params = alps_set_abs_params_st;
2305 priv->nibble_commands = alps_v6_nibble_commands;
2306 priv->x_max = 2047;
2307 priv->y_max = 1535;
2308 break;
2309
2310 case ALPS_PROTO_V7:
2311 priv->hw_init = alps_hw_init_v7;
2312 priv->process_packet = alps_process_packet_v7;
2313 priv->decode_fields = alps_decode_packet_v7;
2314 priv->set_abs_params = alps_set_abs_params_mt;
2315 priv->nibble_commands = alps_v3_nibble_commands;
2316 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2317 priv->x_max = 0xfff;
2318 priv->y_max = 0x7ff;
2319
2320 if (priv->fw_ver[1] != 0xba)
2321 priv->flags |= ALPS_BUTTONPAD;
2322
2323 break;
2324 }
2325
2326 return 0;
2327 }
2328
2329 static const struct alps_protocol_info *alps_match_table(unsigned char *e7,
2330 unsigned char *ec)
2331 {
2332 const struct alps_model_info *model;
2333 int i;
2334
2335 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) {
2336 model = &alps_model_data[i];
2337
2338 if (!memcmp(e7, model->signature, sizeof(model->signature)) &&
2339 (!model->command_mode_resp ||
2340 model->command_mode_resp == ec[2])) {
2341
2342 return &model->protocol_info;
2343 }
2344 }
2345
2346 return NULL;
2347 }
2348
2349 static int alps_identify(struct psmouse *psmouse, struct alps_data *priv)
2350 {
2351 const struct alps_protocol_info *protocol;
2352 unsigned char e6[4], e7[4], ec[4];
2353 int error;
2354
2355 /*
2356 * First try "E6 report".
2357 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed.
2358 * The bits 0-2 of the first byte will be 1s if some buttons are
2359 * pressed.
2360 */
2361 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
2362 PSMOUSE_CMD_SETSCALE11, e6))
2363 return -EIO;
2364
2365 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100))
2366 return -EINVAL;
2367
2368 /*
2369 * Now get the "E7" and "EC" reports. These will uniquely identify
2370 * most ALPS touchpads.
2371 */
2372 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
2373 PSMOUSE_CMD_SETSCALE21, e7) ||
2374 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
2375 PSMOUSE_CMD_RESET_WRAP, ec) ||
2376 alps_exit_command_mode(psmouse))
2377 return -EIO;
2378
2379 protocol = alps_match_table(e7, ec);
2380 if (!protocol) {
2381 if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 &&
2382 ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) {
2383 protocol = &alps_v5_protocol_data;
2384 } else if (ec[0] == 0x88 &&
2385 ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) {
2386 protocol = &alps_v7_protocol_data;
2387 } else if (ec[0] == 0x88 && ec[1] == 0x08) {
2388 protocol = &alps_v3_rushmore_data;
2389 } else if (ec[0] == 0x88 && ec[1] == 0x07 &&
2390 ec[2] >= 0x90 && ec[2] <= 0x9d) {
2391 protocol = &alps_v3_protocol_data;
2392 } else {
2393 psmouse_dbg(psmouse,
2394 "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec);
2395 return -EINVAL;
2396 }
2397 }
2398
2399 if (priv) {
2400 /* Save the Firmware version */
2401 memcpy(priv->fw_ver, ec, 3);
2402 error = alps_set_protocol(psmouse, priv, protocol);
2403 if (error)
2404 return error;
2405 }
2406
2407 return 0;
2408 }
2409
2410 static int alps_reconnect(struct psmouse *psmouse)
2411 {
2412 struct alps_data *priv = psmouse->private;
2413
2414 psmouse_reset(psmouse);
2415
2416 if (alps_identify(psmouse, priv) < 0)
2417 return -1;
2418
2419 return priv->hw_init(psmouse);
2420 }
2421
2422 static void alps_disconnect(struct psmouse *psmouse)
2423 {
2424 struct alps_data *priv = psmouse->private;
2425
2426 psmouse_reset(psmouse);
2427 del_timer_sync(&priv->timer);
2428 if (priv->dev2)
2429 input_unregister_device(priv->dev2);
2430 if (!IS_ERR_OR_NULL(priv->dev3))
2431 input_unregister_device(priv->dev3);
2432 kfree(priv);
2433 }
2434
2435 static void alps_set_abs_params_st(struct alps_data *priv,
2436 struct input_dev *dev1)
2437 {
2438 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0);
2439 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0);
2440 }
2441
2442 static void alps_set_abs_params_mt(struct alps_data *priv,
2443 struct input_dev *dev1)
2444 {
2445 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0);
2446 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0);
2447
2448 input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res);
2449 input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res);
2450
2451 input_mt_init_slots(dev1, MAX_TOUCHES, INPUT_MT_POINTER |
2452 INPUT_MT_DROP_UNUSED | INPUT_MT_TRACK | INPUT_MT_SEMI_MT);
2453
2454 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit);
2455 set_bit(BTN_TOOL_QUADTAP, dev1->keybit);
2456
2457 /* V7 is real multi-touch */
2458 if (priv->proto_version == ALPS_PROTO_V7)
2459 clear_bit(INPUT_PROP_SEMI_MT, dev1->propbit);
2460 }
2461
2462 int alps_init(struct psmouse *psmouse)
2463 {
2464 struct alps_data *priv = psmouse->private;
2465 struct input_dev *dev1 = psmouse->dev;
2466 int error;
2467
2468 error = priv->hw_init(psmouse);
2469 if (error)
2470 goto init_fail;
2471
2472 /*
2473 * Undo part of setup done for us by psmouse core since touchpad
2474 * is not a relative device.
2475 */
2476 __clear_bit(EV_REL, dev1->evbit);
2477 __clear_bit(REL_X, dev1->relbit);
2478 __clear_bit(REL_Y, dev1->relbit);
2479
2480 /*
2481 * Now set up our capabilities.
2482 */
2483 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY);
2484 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH);
2485 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER);
2486 dev1->keybit[BIT_WORD(BTN_LEFT)] |=
2487 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
2488
2489 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS);
2490
2491 priv->set_abs_params(priv, dev1);
2492 /* No pressure on V7 */
2493 if (priv->proto_version != ALPS_PROTO_V7)
2494 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
2495
2496 if (priv->flags & ALPS_WHEEL) {
2497 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL);
2498 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL);
2499 }
2500
2501 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
2502 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD);
2503 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK);
2504 }
2505
2506 if (priv->flags & ALPS_FOUR_BUTTONS) {
2507 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0);
2508 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1);
2509 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2);
2510 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3);
2511 } else if (priv->flags & ALPS_BUTTONPAD) {
2512 set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit);
2513 clear_bit(BTN_RIGHT, dev1->keybit);
2514 } else {
2515 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE);
2516 }
2517
2518 if (priv->flags & ALPS_DUALPOINT) {
2519 struct input_dev *dev2;
2520
2521 dev2 = input_allocate_device();
2522 if (!dev2) {
2523 psmouse_err(psmouse,
2524 "failed to allocate trackstick device\n");
2525 error = -ENOMEM;
2526 goto init_fail;
2527 }
2528
2529 snprintf(priv->phys2, sizeof(priv->phys2), "%s/input1",
2530 psmouse->ps2dev.serio->phys);
2531 dev2->phys = priv->phys2;
2532
2533 /*
2534 * format of input device name is: "protocol vendor name"
2535 * see function psmouse_switch_protocol() in psmouse-base.c
2536 */
2537 dev2->name = "AlpsPS/2 ALPS DualPoint Stick";
2538
2539 dev2->id.bustype = BUS_I8042;
2540 dev2->id.vendor = 0x0002;
2541 dev2->id.product = PSMOUSE_ALPS;
2542 dev2->id.version = priv->proto_version;
2543 dev2->dev.parent = &psmouse->ps2dev.serio->dev;
2544
2545 input_set_capability(dev2, EV_REL, REL_X);
2546 input_set_capability(dev2, EV_REL, REL_Y);
2547 input_set_capability(dev2, EV_KEY, BTN_LEFT);
2548 input_set_capability(dev2, EV_KEY, BTN_RIGHT);
2549 input_set_capability(dev2, EV_KEY, BTN_MIDDLE);
2550
2551 __set_bit(INPUT_PROP_POINTER, dev2->propbit);
2552 __set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit);
2553
2554 error = input_register_device(dev2);
2555 if (error) {
2556 psmouse_err(psmouse,
2557 "failed to register trackstick device: %d\n",
2558 error);
2559 input_free_device(dev2);
2560 goto init_fail;
2561 }
2562
2563 priv->dev2 = dev2;
2564 }
2565
2566 priv->psmouse = psmouse;
2567
2568 INIT_DELAYED_WORK(&priv->dev3_register_work,
2569 alps_register_bare_ps2_mouse);
2570
2571 psmouse->protocol_handler = alps_process_byte;
2572 psmouse->poll = alps_poll;
2573 psmouse->disconnect = alps_disconnect;
2574 psmouse->reconnect = alps_reconnect;
2575 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6;
2576
2577 /* We are having trouble resyncing ALPS touchpads so disable it for now */
2578 psmouse->resync_time = 0;
2579
2580 /* Allow 2 invalid packets without resetting device */
2581 psmouse->resetafter = psmouse->pktsize * 2;
2582
2583 return 0;
2584
2585 init_fail:
2586 psmouse_reset(psmouse);
2587 /*
2588 * Even though we did not allocate psmouse->private we do free
2589 * it here.
2590 */
2591 kfree(psmouse->private);
2592 psmouse->private = NULL;
2593 return error;
2594 }
2595
2596 int alps_detect(struct psmouse *psmouse, bool set_properties)
2597 {
2598 struct alps_data *priv;
2599 int error;
2600
2601 error = alps_identify(psmouse, NULL);
2602 if (error)
2603 return error;
2604
2605 /*
2606 * Reset the device to make sure it is fully operational:
2607 * on some laptops, like certain Dell Latitudes, we may
2608 * fail to properly detect presence of trackstick if device
2609 * has not been reset.
2610 */
2611 psmouse_reset(psmouse);
2612
2613 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL);
2614 if (!priv)
2615 return -ENOMEM;
2616
2617 error = alps_identify(psmouse, priv);
2618 if (error) {
2619 kfree(priv);
2620 return error;
2621 }
2622
2623 if (set_properties) {
2624 psmouse->vendor = "ALPS";
2625 psmouse->name = priv->flags & ALPS_DUALPOINT ?
2626 "DualPoint TouchPad" : "GlidePoint";
2627 psmouse->model = priv->proto_version;
2628 } else {
2629 /*
2630 * Destroy alps_data structure we allocated earlier since
2631 * this was just a "trial run". Otherwise we'll keep it
2632 * to be used by alps_init() which has to be called if
2633 * we succeed and set_properties is true.
2634 */
2635 kfree(priv);
2636 psmouse->private = NULL;
2637 }
2638
2639 return 0;
2640 }
2641
Linux with added FPC-III support