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_IS_RUSHMORE 0x100 /* device is a rushmore */
103 #define ALPS_BUTTONPAD 0x200 /* device is a clickpad */
104
105 static const struct alps_model_info alps_model_data[] = {
106 { { 0x32, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Toshiba Salellite Pro M10 */
107 { { 0x33, 0x02, 0x0a }, 0x00, ALPS_PROTO_V1, 0x88, 0xf8, 0 }, /* UMAX-530T */
108 { { 0x53, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
109 { { 0x53, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
110 { { 0x60, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, /* HP ze1115 */
111 { { 0x63, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
112 { { 0x63, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
113 { { 0x63, 0x02, 0x28 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Fujitsu Siemens S6010 */
114 { { 0x63, 0x02, 0x3c }, 0x00, ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL }, /* Toshiba Satellite S2400-103 */
115 { { 0x63, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 }, /* NEC Versa L320 */
116 { { 0x63, 0x02, 0x64 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
117 { { 0x63, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D800 */
118 { { 0x73, 0x00, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT }, /* ThinkPad R61 8918-5QG */
119 { { 0x73, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
120 { { 0x73, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Ahtec Laptop */
121 { { 0x20, 0x02, 0x0e }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* XXX */
122 { { 0x22, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT },
123 { { 0x22, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D600 */
124 /* Dell Latitude E5500, E6400, E6500, Precision M4400 */
125 { { 0x62, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf,
126 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED },
127 { { 0x73, 0x00, 0x14 }, 0x00, ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT }, /* Dell XT2 */
128 { { 0x73, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS }, /* Dell Vostro 1400 */
129 { { 0x52, 0x01, 0x14 }, 0x00, ALPS_PROTO_V2, 0xff, 0xff,
130 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED }, /* Toshiba Tecra A11-11L */
131 { { 0x73, 0x02, 0x64 }, 0x8a, ALPS_PROTO_V4, 0x8f, 0x8f, 0 },
132 };
133
134 static void alps_set_abs_params_st(struct alps_data *priv,
135 struct input_dev *dev1);
136 static void alps_set_abs_params_mt(struct alps_data *priv,
137 struct input_dev *dev1);
138
139 /*
140 * XXX - this entry is suspicious. First byte has zero lower nibble,
141 * which is what a normal mouse would report. Also, the value 0x0e
142 * isn't valid per PS/2 spec.
143 */
144
145 /* Packet formats are described in Documentation/input/alps.txt */
146
alps_is_valid_first_byte(struct alps_data * priv,unsigned char data)147 static bool alps_is_valid_first_byte(struct alps_data *priv,
148 unsigned char data)
149 {
150 return (data & priv->mask0) == priv->byte0;
151 }
152
alps_report_buttons(struct psmouse * psmouse,struct input_dev * dev1,struct input_dev * dev2,int left,int right,int middle)153 static void alps_report_buttons(struct psmouse *psmouse,
154 struct input_dev *dev1, struct input_dev *dev2,
155 int left, int right, int middle)
156 {
157 struct input_dev *dev;
158
159 /*
160 * If shared button has already been reported on the
161 * other device (dev2) then this event should be also
162 * sent through that device.
163 */
164 dev = test_bit(BTN_LEFT, dev2->key) ? dev2 : dev1;
165 input_report_key(dev, BTN_LEFT, left);
166
167 dev = test_bit(BTN_RIGHT, dev2->key) ? dev2 : dev1;
168 input_report_key(dev, BTN_RIGHT, right);
169
170 dev = test_bit(BTN_MIDDLE, dev2->key) ? dev2 : dev1;
171 input_report_key(dev, BTN_MIDDLE, middle);
172
173 /*
174 * Sync the _other_ device now, we'll do the first
175 * device later once we report the rest of the events.
176 */
177 input_sync(dev2);
178 }
179
alps_process_packet_v1_v2(struct psmouse * psmouse)180 static void alps_process_packet_v1_v2(struct psmouse *psmouse)
181 {
182 struct alps_data *priv = psmouse->private;
183 unsigned char *packet = psmouse->packet;
184 struct input_dev *dev = psmouse->dev;
185 struct input_dev *dev2 = priv->dev2;
186 int x, y, z, ges, fin, left, right, middle;
187 int back = 0, forward = 0;
188
189 if (priv->proto_version == ALPS_PROTO_V1) {
190 left = packet[2] & 0x10;
191 right = packet[2] & 0x08;
192 middle = 0;
193 x = packet[1] | ((packet[0] & 0x07) << 7);
194 y = packet[4] | ((packet[3] & 0x07) << 7);
195 z = packet[5];
196 } else {
197 left = packet[3] & 1;
198 right = packet[3] & 2;
199 middle = packet[3] & 4;
200 x = packet[1] | ((packet[2] & 0x78) << (7 - 3));
201 y = packet[4] | ((packet[3] & 0x70) << (7 - 4));
202 z = packet[5];
203 }
204
205 if (priv->flags & ALPS_FW_BK_1) {
206 back = packet[0] & 0x10;
207 forward = packet[2] & 4;
208 }
209
210 if (priv->flags & ALPS_FW_BK_2) {
211 back = packet[3] & 4;
212 forward = packet[2] & 4;
213 if ((middle = forward && back))
214 forward = back = 0;
215 }
216
217 ges = packet[2] & 1;
218 fin = packet[2] & 2;
219
220 if ((priv->flags & ALPS_DUALPOINT) && z == 127) {
221 input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x));
222 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y));
223
224 alps_report_buttons(psmouse, dev2, dev, left, right, middle);
225
226 input_sync(dev2);
227 return;
228 }
229
230 alps_report_buttons(psmouse, dev, dev2, left, right, middle);
231
232 /* Convert hardware tap to a reasonable Z value */
233 if (ges && !fin)
234 z = 40;
235
236 /*
237 * A "tap and drag" operation is reported by the hardware as a transition
238 * from (!fin && ges) to (fin && ges). This should be translated to the
239 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually.
240 */
241 if (ges && fin && !priv->prev_fin) {
242 input_report_abs(dev, ABS_X, x);
243 input_report_abs(dev, ABS_Y, y);
244 input_report_abs(dev, ABS_PRESSURE, 0);
245 input_report_key(dev, BTN_TOOL_FINGER, 0);
246 input_sync(dev);
247 }
248 priv->prev_fin = fin;
249
250 if (z > 30)
251 input_report_key(dev, BTN_TOUCH, 1);
252 if (z < 25)
253 input_report_key(dev, BTN_TOUCH, 0);
254
255 if (z > 0) {
256 input_report_abs(dev, ABS_X, x);
257 input_report_abs(dev, ABS_Y, y);
258 }
259
260 input_report_abs(dev, ABS_PRESSURE, z);
261 input_report_key(dev, BTN_TOOL_FINGER, z > 0);
262
263 if (priv->flags & ALPS_WHEEL)
264 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07));
265
266 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
267 input_report_key(dev, BTN_FORWARD, forward);
268 input_report_key(dev, BTN_BACK, back);
269 }
270
271 if (priv->flags & ALPS_FOUR_BUTTONS) {
272 input_report_key(dev, BTN_0, packet[2] & 4);
273 input_report_key(dev, BTN_1, packet[0] & 0x10);
274 input_report_key(dev, BTN_2, packet[3] & 4);
275 input_report_key(dev, BTN_3, packet[0] & 0x20);
276 }
277
278 input_sync(dev);
279 }
280
281 /*
282 * Process bitmap data for V5 protocols. Return value is null.
283 *
284 * The bitmaps don't have enough data to track fingers, so this function
285 * only generates points representing a bounding box of at most two contacts.
286 * These two points are returned in fields->mt.
287 */
alps_process_bitmap_dolphin(struct alps_data * priv,struct alps_fields * fields)288 static void alps_process_bitmap_dolphin(struct alps_data *priv,
289 struct alps_fields *fields)
290 {
291 int box_middle_x, box_middle_y;
292 unsigned int x_map, y_map;
293 unsigned char start_bit, end_bit;
294 unsigned char x_msb, x_lsb, y_msb, y_lsb;
295
296 x_map = fields->x_map;
297 y_map = fields->y_map;
298
299 if (!x_map || !y_map)
300 return;
301
302 /* Get Most-significant and Least-significant bit */
303 x_msb = fls(x_map);
304 x_lsb = ffs(x_map);
305 y_msb = fls(y_map);
306 y_lsb = ffs(y_map);
307
308 /* Most-significant bit should never exceed max sensor line number */
309 if (x_msb > priv->x_bits || y_msb > priv->y_bits)
310 return;
311
312 if (fields->fingers > 1) {
313 start_bit = priv->x_bits - x_msb;
314 end_bit = priv->x_bits - x_lsb;
315 box_middle_x = (priv->x_max * (start_bit + end_bit)) /
316 (2 * (priv->x_bits - 1));
317
318 start_bit = y_lsb - 1;
319 end_bit = y_msb - 1;
320 box_middle_y = (priv->y_max * (start_bit + end_bit)) /
321 (2 * (priv->y_bits - 1));
322 fields->mt[0] = fields->st;
323 fields->mt[1].x = 2 * box_middle_x - fields->mt[0].x;
324 fields->mt[1].y = 2 * box_middle_y - fields->mt[0].y;
325 }
326 }
327
alps_get_bitmap_points(unsigned int map,struct alps_bitmap_point * low,struct alps_bitmap_point * high,int * fingers)328 static void alps_get_bitmap_points(unsigned int map,
329 struct alps_bitmap_point *low,
330 struct alps_bitmap_point *high,
331 int *fingers)
332 {
333 struct alps_bitmap_point *point;
334 int i, bit, prev_bit = 0;
335
336 point = low;
337 for (i = 0; map != 0; i++, map >>= 1) {
338 bit = map & 1;
339 if (bit) {
340 if (!prev_bit) {
341 point->start_bit = i;
342 point->num_bits = 0;
343 (*fingers)++;
344 }
345 point->num_bits++;
346 } else {
347 if (prev_bit)
348 point = high;
349 }
350 prev_bit = bit;
351 }
352 }
353
354 /*
355 * Process bitmap data from v3 and v4 protocols. Returns the number of
356 * fingers detected. A return value of 0 means at least one of the
357 * bitmaps was empty.
358 *
359 * The bitmaps don't have enough data to track fingers, so this function
360 * only generates points representing a bounding box of all contacts.
361 * These points are returned in fields->mt when the return value
362 * is greater than 0.
363 */
alps_process_bitmap(struct alps_data * priv,struct alps_fields * fields)364 static int alps_process_bitmap(struct alps_data *priv,
365 struct alps_fields *fields)
366 {
367 int i, fingers_x = 0, fingers_y = 0, fingers;
368 struct alps_bitmap_point x_low = {0,}, x_high = {0,};
369 struct alps_bitmap_point y_low = {0,}, y_high = {0,};
370
371 if (!fields->x_map || !fields->y_map)
372 return 0;
373
374 alps_get_bitmap_points(fields->x_map, &x_low, &x_high, &fingers_x);
375 alps_get_bitmap_points(fields->y_map, &y_low, &y_high, &fingers_y);
376
377 /*
378 * Fingers can overlap, so we use the maximum count of fingers
379 * on either axis as the finger count.
380 */
381 fingers = max(fingers_x, fingers_y);
382
383 /*
384 * If an axis reports only a single contact, we have overlapping or
385 * adjacent fingers. Divide the single contact between the two points.
386 */
387 if (fingers_x == 1) {
388 i = (x_low.num_bits - 1) / 2;
389 x_low.num_bits = x_low.num_bits - i;
390 x_high.start_bit = x_low.start_bit + i;
391 x_high.num_bits = max(i, 1);
392 }
393 if (fingers_y == 1) {
394 i = (y_low.num_bits - 1) / 2;
395 y_low.num_bits = y_low.num_bits - i;
396 y_high.start_bit = y_low.start_bit + i;
397 y_high.num_bits = max(i, 1);
398 }
399
400 fields->mt[0].x =
401 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) /
402 (2 * (priv->x_bits - 1));
403 fields->mt[0].y =
404 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) /
405 (2 * (priv->y_bits - 1));
406
407 fields->mt[1].x =
408 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) /
409 (2 * (priv->x_bits - 1));
410 fields->mt[1].y =
411 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) /
412 (2 * (priv->y_bits - 1));
413
414 /* y-bitmap order is reversed, except on rushmore */
415 if (!(priv->flags & ALPS_IS_RUSHMORE)) {
416 fields->mt[0].y = priv->y_max - fields->mt[0].y;
417 fields->mt[1].y = priv->y_max - fields->mt[1].y;
418 }
419
420 return fingers;
421 }
422
alps_set_slot(struct input_dev * dev,int slot,int x,int y)423 static void alps_set_slot(struct input_dev *dev, int slot, int x, int y)
424 {
425 input_mt_slot(dev, slot);
426 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
427 input_report_abs(dev, ABS_MT_POSITION_X, x);
428 input_report_abs(dev, ABS_MT_POSITION_Y, y);
429 }
430
alps_report_mt_data(struct psmouse * psmouse,int n)431 static void alps_report_mt_data(struct psmouse *psmouse, int n)
432 {
433 struct alps_data *priv = psmouse->private;
434 struct input_dev *dev = psmouse->dev;
435 struct alps_fields *f = &priv->f;
436 int i, slot[MAX_TOUCHES];
437
438 input_mt_assign_slots(dev, slot, f->mt, n);
439 for (i = 0; i < n; i++)
440 alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y);
441
442 input_mt_sync_frame(dev);
443 }
444
alps_report_semi_mt_data(struct psmouse * psmouse,int fingers)445 static void alps_report_semi_mt_data(struct psmouse *psmouse, int fingers)
446 {
447 struct alps_data *priv = psmouse->private;
448 struct input_dev *dev = psmouse->dev;
449 struct alps_fields *f = &priv->f;
450
451 /* Use st data when we don't have mt data */
452 if (fingers < 2) {
453 f->mt[0].x = f->st.x;
454 f->mt[0].y = f->st.y;
455 fingers = f->pressure > 0 ? 1 : 0;
456 }
457
458 alps_report_mt_data(psmouse, (fingers <= 2) ? fingers : 2);
459
460 input_mt_report_finger_count(dev, fingers);
461
462 input_report_key(dev, BTN_LEFT, f->left);
463 input_report_key(dev, BTN_RIGHT, f->right);
464 input_report_key(dev, BTN_MIDDLE, f->middle);
465
466 input_report_abs(dev, ABS_PRESSURE, f->pressure);
467
468 input_sync(dev);
469 }
470
alps_process_trackstick_packet_v3(struct psmouse * psmouse)471 static void alps_process_trackstick_packet_v3(struct psmouse *psmouse)
472 {
473 struct alps_data *priv = psmouse->private;
474 unsigned char *packet = psmouse->packet;
475 struct input_dev *dev = priv->dev2;
476 int x, y, z, left, right, middle;
477
478 /* Sanity check packet */
479 if (!(packet[0] & 0x40)) {
480 psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n");
481 return;
482 }
483
484 /*
485 * There's a special packet that seems to indicate the end
486 * of a stream of trackstick data. Filter these out.
487 */
488 if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f)
489 return;
490
491 x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f));
492 y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f));
493 z = (packet[4] & 0x7c) >> 2;
494
495 /*
496 * The x and y values tend to be quite large, and when used
497 * alone the trackstick is difficult to use. Scale them down
498 * to compensate.
499 */
500 x /= 8;
501 y /= 8;
502
503 input_report_rel(dev, REL_X, x);
504 input_report_rel(dev, REL_Y, -y);
505
506 /*
507 * Most ALPS models report the trackstick buttons in the touchpad
508 * packets, but a few report them here. No reliable way has been
509 * found to differentiate between the models upfront, so we enable
510 * the quirk in response to seeing a button press in the trackstick
511 * packet.
512 */
513 left = packet[3] & 0x01;
514 right = packet[3] & 0x02;
515 middle = packet[3] & 0x04;
516
517 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) &&
518 (left || right || middle))
519 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS;
520
521 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) {
522 input_report_key(dev, BTN_LEFT, left);
523 input_report_key(dev, BTN_RIGHT, right);
524 input_report_key(dev, BTN_MIDDLE, middle);
525 }
526
527 input_sync(dev);
528 return;
529 }
530
alps_decode_buttons_v3(struct alps_fields * f,unsigned char * p)531 static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p)
532 {
533 f->left = !!(p[3] & 0x01);
534 f->right = !!(p[3] & 0x02);
535 f->middle = !!(p[3] & 0x04);
536
537 f->ts_left = !!(p[3] & 0x10);
538 f->ts_right = !!(p[3] & 0x20);
539 f->ts_middle = !!(p[3] & 0x40);
540 }
541
alps_decode_pinnacle(struct alps_fields * f,unsigned char * p,struct psmouse * psmouse)542 static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p,
543 struct psmouse *psmouse)
544 {
545 f->first_mp = !!(p[4] & 0x40);
546 f->is_mp = !!(p[0] & 0x40);
547
548 f->fingers = (p[5] & 0x3) + 1;
549 f->x_map = ((p[4] & 0x7e) << 8) |
550 ((p[1] & 0x7f) << 2) |
551 ((p[0] & 0x30) >> 4);
552 f->y_map = ((p[3] & 0x70) << 4) |
553 ((p[2] & 0x7f) << 1) |
554 (p[4] & 0x01);
555
556 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) |
557 ((p[0] & 0x30) >> 4);
558 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f);
559 f->pressure = p[5] & 0x7f;
560
561 alps_decode_buttons_v3(f, p);
562
563 return 0;
564 }
565
alps_decode_rushmore(struct alps_fields * f,unsigned char * p,struct psmouse * psmouse)566 static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p,
567 struct psmouse *psmouse)
568 {
569 alps_decode_pinnacle(f, p, psmouse);
570
571 /* Rushmore's packet decode has a bit difference with Pinnacle's */
572 f->is_mp = !!(p[5] & 0x40);
573 f->fingers = max((p[5] & 0x3), ((p[5] >> 2) & 0x3)) + 1;
574 f->x_map |= (p[5] & 0x10) << 11;
575 f->y_map |= (p[5] & 0x20) << 6;
576
577 return 0;
578 }
579
alps_decode_dolphin(struct alps_fields * f,unsigned char * p,struct psmouse * psmouse)580 static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p,
581 struct psmouse *psmouse)
582 {
583 u64 palm_data = 0;
584 struct alps_data *priv = psmouse->private;
585
586 f->first_mp = !!(p[0] & 0x02);
587 f->is_mp = !!(p[0] & 0x20);
588
589 if (!f->is_mp) {
590 f->st.x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7));
591 f->st.y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3));
592 f->pressure = (p[0] & 4) ? 0 : p[5] & 0x7f;
593 alps_decode_buttons_v3(f, p);
594 } else {
595 f->fingers = ((p[0] & 0x6) >> 1 |
596 (p[0] & 0x10) >> 2);
597
598 palm_data = (p[1] & 0x7f) |
599 ((p[2] & 0x7f) << 7) |
600 ((p[4] & 0x7f) << 14) |
601 ((p[5] & 0x7f) << 21) |
602 ((p[3] & 0x07) << 28) |
603 (((u64)p[3] & 0x70) << 27) |
604 (((u64)p[0] & 0x01) << 34);
605
606 /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */
607 f->y_map = palm_data & (BIT(priv->y_bits) - 1);
608
609 /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */
610 f->x_map = (palm_data >> priv->y_bits) &
611 (BIT(priv->x_bits) - 1);
612 }
613
614 return 0;
615 }
616
alps_process_touchpad_packet_v3_v5(struct psmouse * psmouse)617 static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse)
618 {
619 struct alps_data *priv = psmouse->private;
620 unsigned char *packet = psmouse->packet;
621 struct input_dev *dev2 = priv->dev2;
622 struct alps_fields *f = &priv->f;
623 int fingers = 0;
624
625 memset(f, 0, sizeof(*f));
626
627 priv->decode_fields(f, packet, psmouse);
628
629 /*
630 * There's no single feature of touchpad position and bitmap packets
631 * that can be used to distinguish between them. We rely on the fact
632 * that a bitmap packet should always follow a position packet with
633 * bit 6 of packet[4] set.
634 */
635 if (priv->multi_packet) {
636 /*
637 * Sometimes a position packet will indicate a multi-packet
638 * sequence, but then what follows is another position
639 * packet. Check for this, and when it happens process the
640 * position packet as usual.
641 */
642 if (f->is_mp) {
643 fingers = f->fingers;
644 if (priv->proto_version == ALPS_PROTO_V3) {
645 if (alps_process_bitmap(priv, f) == 0)
646 fingers = 0; /* Use st data */
647
648 /* Now process position packet */
649 priv->decode_fields(f, priv->multi_data,
650 psmouse);
651 } else {
652 /*
653 * Because Dolphin uses position packet's
654 * coordinate data as Pt1 and uses it to
655 * calculate Pt2, so we need to do position
656 * packet decode first.
657 */
658 priv->decode_fields(f, priv->multi_data,
659 psmouse);
660
661 /*
662 * Since Dolphin's finger number is reliable,
663 * there is no need to compare with bmap_fn.
664 */
665 alps_process_bitmap_dolphin(priv, f);
666 }
667 } else {
668 priv->multi_packet = 0;
669 }
670 }
671
672 /*
673 * Bit 6 of byte 0 is not usually set in position packets. The only
674 * times it seems to be set is in situations where the data is
675 * suspect anyway, e.g. a palm resting flat on the touchpad. Given
676 * this combined with the fact that this bit is useful for filtering
677 * out misidentified bitmap packets, we reject anything with this
678 * bit set.
679 */
680 if (f->is_mp)
681 return;
682
683 if (!priv->multi_packet && f->first_mp) {
684 priv->multi_packet = 1;
685 memcpy(priv->multi_data, packet, sizeof(priv->multi_data));
686 return;
687 }
688
689 priv->multi_packet = 0;
690
691 /*
692 * Sometimes the hardware sends a single packet with z = 0
693 * in the middle of a stream. Real releases generate packets
694 * with x, y, and z all zero, so these seem to be flukes.
695 * Ignore them.
696 */
697 if (f->st.x && f->st.y && !f->pressure)
698 return;
699
700 alps_report_semi_mt_data(psmouse, fingers);
701
702 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) {
703 input_report_key(dev2, BTN_LEFT, f->ts_left);
704 input_report_key(dev2, BTN_RIGHT, f->ts_right);
705 input_report_key(dev2, BTN_MIDDLE, f->ts_middle);
706 input_sync(dev2);
707 }
708 }
709
alps_process_packet_v3(struct psmouse * psmouse)710 static void alps_process_packet_v3(struct psmouse *psmouse)
711 {
712 unsigned char *packet = psmouse->packet;
713
714 /*
715 * v3 protocol packets come in three types, two representing
716 * touchpad data and one representing trackstick data.
717 * Trackstick packets seem to be distinguished by always
718 * having 0x3f in the last byte. This value has never been
719 * observed in the last byte of either of the other types
720 * of packets.
721 */
722 if (packet[5] == 0x3f) {
723 alps_process_trackstick_packet_v3(psmouse);
724 return;
725 }
726
727 alps_process_touchpad_packet_v3_v5(psmouse);
728 }
729
alps_process_packet_v6(struct psmouse * psmouse)730 static void alps_process_packet_v6(struct psmouse *psmouse)
731 {
732 struct alps_data *priv = psmouse->private;
733 unsigned char *packet = psmouse->packet;
734 struct input_dev *dev = psmouse->dev;
735 struct input_dev *dev2 = priv->dev2;
736 int x, y, z, left, right, middle;
737
738 /*
739 * We can use Byte5 to distinguish if the packet is from Touchpad
740 * or Trackpoint.
741 * Touchpad: 0 - 0x7E
742 * Trackpoint: 0x7F
743 */
744 if (packet[5] == 0x7F) {
745 /* It should be a DualPoint when received Trackpoint packet */
746 if (!(priv->flags & ALPS_DUALPOINT))
747 return;
748
749 /* Trackpoint packet */
750 x = packet[1] | ((packet[3] & 0x20) << 2);
751 y = packet[2] | ((packet[3] & 0x40) << 1);
752 z = packet[4];
753 left = packet[3] & 0x01;
754 right = packet[3] & 0x02;
755 middle = packet[3] & 0x04;
756
757 /* To prevent the cursor jump when finger lifted */
758 if (x == 0x7F && y == 0x7F && z == 0x7F)
759 x = y = z = 0;
760
761 /* Divide 4 since trackpoint's speed is too fast */
762 input_report_rel(dev2, REL_X, (char)x / 4);
763 input_report_rel(dev2, REL_Y, -((char)y / 4));
764
765 input_report_key(dev2, BTN_LEFT, left);
766 input_report_key(dev2, BTN_RIGHT, right);
767 input_report_key(dev2, BTN_MIDDLE, middle);
768
769 input_sync(dev2);
770 return;
771 }
772
773 /* Touchpad packet */
774 x = packet[1] | ((packet[3] & 0x78) << 4);
775 y = packet[2] | ((packet[4] & 0x78) << 4);
776 z = packet[5];
777 left = packet[3] & 0x01;
778 right = packet[3] & 0x02;
779
780 if (z > 30)
781 input_report_key(dev, BTN_TOUCH, 1);
782 if (z < 25)
783 input_report_key(dev, BTN_TOUCH, 0);
784
785 if (z > 0) {
786 input_report_abs(dev, ABS_X, x);
787 input_report_abs(dev, ABS_Y, y);
788 }
789
790 input_report_abs(dev, ABS_PRESSURE, z);
791 input_report_key(dev, BTN_TOOL_FINGER, z > 0);
792
793 /* v6 touchpad does not have middle button */
794 input_report_key(dev, BTN_LEFT, left);
795 input_report_key(dev, BTN_RIGHT, right);
796
797 input_sync(dev);
798 }
799
alps_process_packet_v4(struct psmouse * psmouse)800 static void alps_process_packet_v4(struct psmouse *psmouse)
801 {
802 struct alps_data *priv = psmouse->private;
803 unsigned char *packet = psmouse->packet;
804 struct alps_fields *f = &priv->f;
805 int offset;
806
807 /*
808 * v4 has a 6-byte encoding for bitmap data, but this data is
809 * broken up between 3 normal packets. Use priv->multi_packet to
810 * track our position in the bitmap packet.
811 */
812 if (packet[6] & 0x40) {
813 /* sync, reset position */
814 priv->multi_packet = 0;
815 }
816
817 if (WARN_ON_ONCE(priv->multi_packet > 2))
818 return;
819
820 offset = 2 * priv->multi_packet;
821 priv->multi_data[offset] = packet[6];
822 priv->multi_data[offset + 1] = packet[7];
823
824 if (++priv->multi_packet > 2) {
825 priv->multi_packet = 0;
826
827 f->x_map = ((priv->multi_data[2] & 0x1f) << 10) |
828 ((priv->multi_data[3] & 0x60) << 3) |
829 ((priv->multi_data[0] & 0x3f) << 2) |
830 ((priv->multi_data[1] & 0x60) >> 5);
831 f->y_map = ((priv->multi_data[5] & 0x01) << 10) |
832 ((priv->multi_data[3] & 0x1f) << 5) |
833 (priv->multi_data[1] & 0x1f);
834
835 f->fingers = alps_process_bitmap(priv, f);
836 }
837
838 f->left = !!(packet[4] & 0x01);
839 f->right = !!(packet[4] & 0x02);
840
841 f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) |
842 ((packet[0] & 0x30) >> 4);
843 f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f);
844 f->pressure = packet[5] & 0x7f;
845
846 alps_report_semi_mt_data(psmouse, f->fingers);
847 }
848
alps_is_valid_package_v7(struct psmouse * psmouse)849 static bool alps_is_valid_package_v7(struct psmouse *psmouse)
850 {
851 switch (psmouse->pktcnt) {
852 case 3:
853 return (psmouse->packet[2] & 0x40) == 0x40;
854 case 4:
855 return (psmouse->packet[3] & 0x48) == 0x48;
856 case 6:
857 return (psmouse->packet[5] & 0x40) == 0x00;
858 }
859 return true;
860 }
861
alps_get_packet_id_v7(char * byte)862 static unsigned char alps_get_packet_id_v7(char *byte)
863 {
864 unsigned char packet_id;
865
866 if (byte[4] & 0x40)
867 packet_id = V7_PACKET_ID_TWO;
868 else if (byte[4] & 0x01)
869 packet_id = V7_PACKET_ID_MULTI;
870 else if ((byte[0] & 0x10) && !(byte[4] & 0x43))
871 packet_id = V7_PACKET_ID_NEW;
872 else if (byte[1] == 0x00 && byte[4] == 0x00)
873 packet_id = V7_PACKET_ID_IDLE;
874 else
875 packet_id = V7_PACKET_ID_UNKNOWN;
876
877 return packet_id;
878 }
879
alps_get_finger_coordinate_v7(struct input_mt_pos * mt,unsigned char * pkt,unsigned char pkt_id)880 static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt,
881 unsigned char *pkt,
882 unsigned char pkt_id)
883 {
884 mt[0].x = ((pkt[2] & 0x80) << 4);
885 mt[0].x |= ((pkt[2] & 0x3F) << 5);
886 mt[0].x |= ((pkt[3] & 0x30) >> 1);
887 mt[0].x |= (pkt[3] & 0x07);
888 mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07);
889
890 mt[1].x = ((pkt[3] & 0x80) << 4);
891 mt[1].x |= ((pkt[4] & 0x80) << 3);
892 mt[1].x |= ((pkt[4] & 0x3F) << 4);
893 mt[1].y = ((pkt[5] & 0x80) << 3);
894 mt[1].y |= ((pkt[5] & 0x3F) << 4);
895
896 switch (pkt_id) {
897 case V7_PACKET_ID_TWO:
898 mt[1].x &= ~0x000F;
899 mt[1].y |= 0x000F;
900 break;
901
902 case V7_PACKET_ID_MULTI:
903 mt[1].x &= ~0x003F;
904 mt[1].y &= ~0x0020;
905 mt[1].y |= ((pkt[4] & 0x02) << 4);
906 mt[1].y |= 0x001F;
907 break;
908
909 case V7_PACKET_ID_NEW:
910 mt[1].x &= ~0x003F;
911 mt[1].x |= (pkt[0] & 0x20);
912 mt[1].y |= 0x000F;
913 break;
914 }
915
916 mt[0].y = 0x7FF - mt[0].y;
917 mt[1].y = 0x7FF - mt[1].y;
918 }
919
alps_get_mt_count(struct input_mt_pos * mt)920 static int alps_get_mt_count(struct input_mt_pos *mt)
921 {
922 int i, fingers = 0;
923
924 for (i = 0; i < MAX_TOUCHES; i++) {
925 if (mt[i].x != 0 || mt[i].y != 0)
926 fingers++;
927 }
928
929 return fingers;
930 }
931
alps_decode_packet_v7(struct alps_fields * f,unsigned char * p,struct psmouse * psmouse)932 static int alps_decode_packet_v7(struct alps_fields *f,
933 unsigned char *p,
934 struct psmouse *psmouse)
935 {
936 struct alps_data *priv = psmouse->private;
937 unsigned char pkt_id;
938
939 pkt_id = alps_get_packet_id_v7(p);
940 if (pkt_id == V7_PACKET_ID_IDLE)
941 return 0;
942 if (pkt_id == V7_PACKET_ID_UNKNOWN)
943 return -1;
944 /*
945 * NEW packets are send to indicate a discontinuity in the finger
946 * coordinate reporting. Specifically a finger may have moved from
947 * slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for
948 * us.
949 *
950 * NEW packets have 3 problems:
951 * 1) They do not contain middle / right button info (on non clickpads)
952 * this can be worked around by preserving the old button state
953 * 2) They do not contain an accurate fingercount, and they are
954 * typically send when the number of fingers changes. We cannot use
955 * the old finger count as that may mismatch with the amount of
956 * touch coordinates we've available in the NEW packet
957 * 3) Their x data for the second touch is inaccurate leading to
958 * a possible jump of the x coordinate by 16 units when the first
959 * non NEW packet comes in
960 * Since problems 2 & 3 cannot be worked around, just ignore them.
961 */
962 if (pkt_id == V7_PACKET_ID_NEW)
963 return 1;
964
965 alps_get_finger_coordinate_v7(f->mt, p, pkt_id);
966
967 if (pkt_id == V7_PACKET_ID_TWO)
968 f->fingers = alps_get_mt_count(f->mt);
969 else /* pkt_id == V7_PACKET_ID_MULTI */
970 f->fingers = 3 + (p[5] & 0x03);
971
972 f->left = (p[0] & 0x80) >> 7;
973 if (priv->flags & ALPS_BUTTONPAD) {
974 if (p[0] & 0x20)
975 f->fingers++;
976 if (p[0] & 0x10)
977 f->fingers++;
978 } else {
979 f->right = (p[0] & 0x20) >> 5;
980 f->middle = (p[0] & 0x10) >> 4;
981 }
982
983 /* Sometimes a single touch is reported in mt[1] rather then mt[0] */
984 if (f->fingers == 1 && f->mt[0].x == 0 && f->mt[0].y == 0) {
985 f->mt[0].x = f->mt[1].x;
986 f->mt[0].y = f->mt[1].y;
987 f->mt[1].x = 0;
988 f->mt[1].y = 0;
989 }
990
991 return 0;
992 }
993
alps_process_trackstick_packet_v7(struct psmouse * psmouse)994 static void alps_process_trackstick_packet_v7(struct psmouse *psmouse)
995 {
996 struct alps_data *priv = psmouse->private;
997 unsigned char *packet = psmouse->packet;
998 struct input_dev *dev2 = priv->dev2;
999 int x, y, z, left, right, middle;
1000
1001 /*
1002 * b7 b6 b5 b4 b3 b2 b1 b0
1003 * Byte0 0 1 0 0 1 0 0 0
1004 * Byte1 1 1 * * 1 M R L
1005 * Byte2 X7 1 X5 X4 X3 X2 X1 X0
1006 * Byte3 Z6 1 Y6 X6 1 Y2 Y1 Y0
1007 * Byte4 Y7 0 Y5 Y4 Y3 1 1 0
1008 * Byte5 T&P 0 Z5 Z4 Z3 Z2 Z1 Z0
1009 * M / R / L: Middle / Right / Left button
1010 */
1011
1012 x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2);
1013 y = (packet[3] & 0x07) | (packet[4] & 0xb8) |
1014 ((packet[3] & 0x20) << 1);
1015 z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1);
1016
1017 left = (packet[1] & 0x01);
1018 right = (packet[1] & 0x02) >> 1;
1019 middle = (packet[1] & 0x04) >> 2;
1020
1021 /* Divide 2 since trackpoint's speed is too fast */
1022 input_report_rel(dev2, REL_X, (char)x / 2);
1023 input_report_rel(dev2, REL_Y, -((char)y / 2));
1024
1025 input_report_key(dev2, BTN_LEFT, left);
1026 input_report_key(dev2, BTN_RIGHT, right);
1027 input_report_key(dev2, BTN_MIDDLE, middle);
1028
1029 input_sync(dev2);
1030 }
1031
alps_process_touchpad_packet_v7(struct psmouse * psmouse)1032 static void alps_process_touchpad_packet_v7(struct psmouse *psmouse)
1033 {
1034 struct alps_data *priv = psmouse->private;
1035 struct input_dev *dev = psmouse->dev;
1036 struct alps_fields *f = &priv->f;
1037
1038 memset(f, 0, sizeof(*f));
1039
1040 if (priv->decode_fields(f, psmouse->packet, psmouse))
1041 return;
1042
1043 alps_report_mt_data(psmouse, alps_get_mt_count(f->mt));
1044
1045 input_mt_report_finger_count(dev, f->fingers);
1046
1047 input_report_key(dev, BTN_LEFT, f->left);
1048 input_report_key(dev, BTN_RIGHT, f->right);
1049 input_report_key(dev, BTN_MIDDLE, f->middle);
1050
1051 input_sync(dev);
1052 }
1053
alps_process_packet_v7(struct psmouse * psmouse)1054 static void alps_process_packet_v7(struct psmouse *psmouse)
1055 {
1056 unsigned char *packet = psmouse->packet;
1057
1058 if (packet[0] == 0x48 && (packet[4] & 0x47) == 0x06)
1059 alps_process_trackstick_packet_v7(psmouse);
1060 else
1061 alps_process_touchpad_packet_v7(psmouse);
1062 }
1063
alps_report_bare_ps2_packet(struct psmouse * psmouse,unsigned char packet[],bool report_buttons)1064 static void alps_report_bare_ps2_packet(struct psmouse *psmouse,
1065 unsigned char packet[],
1066 bool report_buttons)
1067 {
1068 struct alps_data *priv = psmouse->private;
1069 struct input_dev *dev2 = priv->dev2;
1070
1071 if (report_buttons)
1072 alps_report_buttons(psmouse, dev2, psmouse->dev,
1073 packet[0] & 1, packet[0] & 2, packet[0] & 4);
1074
1075 input_report_rel(dev2, REL_X,
1076 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0);
1077 input_report_rel(dev2, REL_Y,
1078 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0);
1079
1080 input_sync(dev2);
1081 }
1082
alps_handle_interleaved_ps2(struct psmouse * psmouse)1083 static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse)
1084 {
1085 struct alps_data *priv = psmouse->private;
1086
1087 if (psmouse->pktcnt < 6)
1088 return PSMOUSE_GOOD_DATA;
1089
1090 if (psmouse->pktcnt == 6) {
1091 /*
1092 * Start a timer to flush the packet if it ends up last
1093 * 6-byte packet in the stream. Timer needs to fire
1094 * psmouse core times out itself. 20 ms should be enough
1095 * to decide if we are getting more data or not.
1096 */
1097 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20));
1098 return PSMOUSE_GOOD_DATA;
1099 }
1100
1101 del_timer(&priv->timer);
1102
1103 if (psmouse->packet[6] & 0x80) {
1104
1105 /*
1106 * Highest bit is set - that means we either had
1107 * complete ALPS packet and this is start of the
1108 * next packet or we got garbage.
1109 */
1110
1111 if (((psmouse->packet[3] |
1112 psmouse->packet[4] |
1113 psmouse->packet[5]) & 0x80) ||
1114 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) {
1115 psmouse_dbg(psmouse,
1116 "refusing packet %4ph (suspected interleaved ps/2)\n",
1117 psmouse->packet + 3);
1118 return PSMOUSE_BAD_DATA;
1119 }
1120
1121 priv->process_packet(psmouse);
1122
1123 /* Continue with the next packet */
1124 psmouse->packet[0] = psmouse->packet[6];
1125 psmouse->pktcnt = 1;
1126
1127 } else {
1128
1129 /*
1130 * High bit is 0 - that means that we indeed got a PS/2
1131 * packet in the middle of ALPS packet.
1132 *
1133 * There is also possibility that we got 6-byte ALPS
1134 * packet followed by 3-byte packet from trackpoint. We
1135 * can not distinguish between these 2 scenarios but
1136 * because the latter is unlikely to happen in course of
1137 * normal operation (user would need to press all
1138 * buttons on the pad and start moving trackpoint
1139 * without touching the pad surface) we assume former.
1140 * Even if we are wrong the wost thing that would happen
1141 * the cursor would jump but we should not get protocol
1142 * de-synchronization.
1143 */
1144
1145 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3],
1146 false);
1147
1148 /*
1149 * Continue with the standard ALPS protocol handling,
1150 * but make sure we won't process it as an interleaved
1151 * packet again, which may happen if all buttons are
1152 * pressed. To avoid this let's reset the 4th bit which
1153 * is normally 1.
1154 */
1155 psmouse->packet[3] = psmouse->packet[6] & 0xf7;
1156 psmouse->pktcnt = 4;
1157 }
1158
1159 return PSMOUSE_GOOD_DATA;
1160 }
1161
alps_flush_packet(unsigned long data)1162 static void alps_flush_packet(unsigned long data)
1163 {
1164 struct psmouse *psmouse = (struct psmouse *)data;
1165 struct alps_data *priv = psmouse->private;
1166
1167 serio_pause_rx(psmouse->ps2dev.serio);
1168
1169 if (psmouse->pktcnt == psmouse->pktsize) {
1170
1171 /*
1172 * We did not any more data in reasonable amount of time.
1173 * Validate the last 3 bytes and process as a standard
1174 * ALPS packet.
1175 */
1176 if ((psmouse->packet[3] |
1177 psmouse->packet[4] |
1178 psmouse->packet[5]) & 0x80) {
1179 psmouse_dbg(psmouse,
1180 "refusing packet %3ph (suspected interleaved ps/2)\n",
1181 psmouse->packet + 3);
1182 } else {
1183 priv->process_packet(psmouse);
1184 }
1185 psmouse->pktcnt = 0;
1186 }
1187
1188 serio_continue_rx(psmouse->ps2dev.serio);
1189 }
1190
alps_process_byte(struct psmouse * psmouse)1191 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
1192 {
1193 struct alps_data *priv = psmouse->private;
1194
1195 /*
1196 * Check if we are dealing with a bare PS/2 packet, presumably from
1197 * a device connected to the external PS/2 port. Because bare PS/2
1198 * protocol does not have enough constant bits to self-synchronize
1199 * properly we only do this if the device is fully synchronized.
1200 */
1201 if (!psmouse->out_of_sync_cnt && (psmouse->packet[0] & 0xc8) == 0x08) {
1202 if (psmouse->pktcnt == 3) {
1203 alps_report_bare_ps2_packet(psmouse, psmouse->packet,
1204 true);
1205 return PSMOUSE_FULL_PACKET;
1206 }
1207 return PSMOUSE_GOOD_DATA;
1208 }
1209
1210 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */
1211
1212 if ((priv->flags & ALPS_PS2_INTERLEAVED) &&
1213 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) {
1214 return alps_handle_interleaved_ps2(psmouse);
1215 }
1216
1217 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) {
1218 psmouse_dbg(psmouse,
1219 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n",
1220 psmouse->packet[0], priv->mask0, priv->byte0);
1221 return PSMOUSE_BAD_DATA;
1222 }
1223
1224 /* Bytes 2 - pktsize should have 0 in the highest bit */
1225 if (priv->proto_version < ALPS_PROTO_V5 &&
1226 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize &&
1227 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) {
1228 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
1229 psmouse->pktcnt - 1,
1230 psmouse->packet[psmouse->pktcnt - 1]);
1231
1232 if (priv->proto_version == ALPS_PROTO_V3 &&
1233 psmouse->pktcnt == psmouse->pktsize) {
1234 /*
1235 * Some Dell boxes, such as Latitude E6440 or E7440
1236 * with closed lid, quite often smash last byte of
1237 * otherwise valid packet with 0xff. Given that the
1238 * next packet is very likely to be valid let's
1239 * report PSMOUSE_FULL_PACKET but not process data,
1240 * rather than reporting PSMOUSE_BAD_DATA and
1241 * filling the logs.
1242 */
1243 return PSMOUSE_FULL_PACKET;
1244 }
1245
1246 return PSMOUSE_BAD_DATA;
1247 }
1248
1249 if (priv->proto_version == ALPS_PROTO_V7 &&
1250 !alps_is_valid_package_v7(psmouse)) {
1251 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
1252 psmouse->pktcnt - 1,
1253 psmouse->packet[psmouse->pktcnt - 1]);
1254 return PSMOUSE_BAD_DATA;
1255 }
1256
1257 if (psmouse->pktcnt == psmouse->pktsize) {
1258 priv->process_packet(psmouse);
1259 return PSMOUSE_FULL_PACKET;
1260 }
1261
1262 return PSMOUSE_GOOD_DATA;
1263 }
1264
alps_command_mode_send_nibble(struct psmouse * psmouse,int nibble)1265 static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble)
1266 {
1267 struct ps2dev *ps2dev = &psmouse->ps2dev;
1268 struct alps_data *priv = psmouse->private;
1269 int command;
1270 unsigned char *param;
1271 unsigned char dummy[4];
1272
1273 BUG_ON(nibble > 0xf);
1274
1275 command = priv->nibble_commands[nibble].command;
1276 param = (command & 0x0f00) ?
1277 dummy : (unsigned char *)&priv->nibble_commands[nibble].data;
1278
1279 if (ps2_command(ps2dev, param, command))
1280 return -1;
1281
1282 return 0;
1283 }
1284
alps_command_mode_set_addr(struct psmouse * psmouse,int addr)1285 static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr)
1286 {
1287 struct ps2dev *ps2dev = &psmouse->ps2dev;
1288 struct alps_data *priv = psmouse->private;
1289 int i, nibble;
1290
1291 if (ps2_command(ps2dev, NULL, priv->addr_command))
1292 return -1;
1293
1294 for (i = 12; i >= 0; i -= 4) {
1295 nibble = (addr >> i) & 0xf;
1296 if (alps_command_mode_send_nibble(psmouse, nibble))
1297 return -1;
1298 }
1299
1300 return 0;
1301 }
1302
__alps_command_mode_read_reg(struct psmouse * psmouse,int addr)1303 static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
1304 {
1305 struct ps2dev *ps2dev = &psmouse->ps2dev;
1306 unsigned char param[4];
1307
1308 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1309 return -1;
1310
1311 /*
1312 * The address being read is returned in the first two bytes
1313 * of the result. Check that this address matches the expected
1314 * address.
1315 */
1316 if (addr != ((param[0] << 8) | param[1]))
1317 return -1;
1318
1319 return param[2];
1320 }
1321
alps_command_mode_read_reg(struct psmouse * psmouse,int addr)1322 static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
1323 {
1324 if (alps_command_mode_set_addr(psmouse, addr))
1325 return -1;
1326 return __alps_command_mode_read_reg(psmouse, addr);
1327 }
1328
__alps_command_mode_write_reg(struct psmouse * psmouse,u8 value)1329 static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value)
1330 {
1331 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf))
1332 return -1;
1333 if (alps_command_mode_send_nibble(psmouse, value & 0xf))
1334 return -1;
1335 return 0;
1336 }
1337
alps_command_mode_write_reg(struct psmouse * psmouse,int addr,u8 value)1338 static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr,
1339 u8 value)
1340 {
1341 if (alps_command_mode_set_addr(psmouse, addr))
1342 return -1;
1343 return __alps_command_mode_write_reg(psmouse, value);
1344 }
1345
alps_rpt_cmd(struct psmouse * psmouse,int init_command,int repeated_command,unsigned char * param)1346 static int alps_rpt_cmd(struct psmouse *psmouse, int init_command,
1347 int repeated_command, unsigned char *param)
1348 {
1349 struct ps2dev *ps2dev = &psmouse->ps2dev;
1350
1351 param[0] = 0;
1352 if (init_command && ps2_command(ps2dev, param, init_command))
1353 return -EIO;
1354
1355 if (ps2_command(ps2dev, NULL, repeated_command) ||
1356 ps2_command(ps2dev, NULL, repeated_command) ||
1357 ps2_command(ps2dev, NULL, repeated_command))
1358 return -EIO;
1359
1360 param[0] = param[1] = param[2] = 0xff;
1361 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1362 return -EIO;
1363
1364 psmouse_dbg(psmouse, "%2.2X report: %3ph\n",
1365 repeated_command, param);
1366 return 0;
1367 }
1368
alps_check_valid_firmware_id(unsigned char id[])1369 static bool alps_check_valid_firmware_id(unsigned char id[])
1370 {
1371 if (id[0] == 0x73)
1372 return true;
1373
1374 if (id[0] == 0x88 &&
1375 (id[1] == 0x07 ||
1376 id[1] == 0x08 ||
1377 (id[1] & 0xf0) == 0xb0 ||
1378 (id[1] & 0xf0) == 0xc0)) {
1379 return true;
1380 }
1381
1382 return false;
1383 }
1384
alps_enter_command_mode(struct psmouse * psmouse)1385 static int alps_enter_command_mode(struct psmouse *psmouse)
1386 {
1387 unsigned char param[4];
1388
1389 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) {
1390 psmouse_err(psmouse, "failed to enter command mode\n");
1391 return -1;
1392 }
1393
1394 if (!alps_check_valid_firmware_id(param)) {
1395 psmouse_dbg(psmouse,
1396 "unknown response while entering command mode\n");
1397 return -1;
1398 }
1399 return 0;
1400 }
1401
alps_exit_command_mode(struct psmouse * psmouse)1402 static inline int alps_exit_command_mode(struct psmouse *psmouse)
1403 {
1404 struct ps2dev *ps2dev = &psmouse->ps2dev;
1405 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM))
1406 return -1;
1407 return 0;
1408 }
1409
1410 /*
1411 * For DualPoint devices select the device that should respond to
1412 * subsequent commands. It looks like glidepad is behind stickpointer,
1413 * I'd thought it would be other way around...
1414 */
alps_passthrough_mode_v2(struct psmouse * psmouse,bool enable)1415 static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable)
1416 {
1417 struct ps2dev *ps2dev = &psmouse->ps2dev;
1418 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11;
1419
1420 if (ps2_command(ps2dev, NULL, cmd) ||
1421 ps2_command(ps2dev, NULL, cmd) ||
1422 ps2_command(ps2dev, NULL, cmd) ||
1423 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1424 return -1;
1425
1426 /* we may get 3 more bytes, just ignore them */
1427 ps2_drain(ps2dev, 3, 100);
1428
1429 return 0;
1430 }
1431
alps_absolute_mode_v1_v2(struct psmouse * psmouse)1432 static int alps_absolute_mode_v1_v2(struct psmouse *psmouse)
1433 {
1434 struct ps2dev *ps2dev = &psmouse->ps2dev;
1435
1436 /* Try ALPS magic knock - 4 disable before enable */
1437 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1438 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1439 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1440 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1441 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE))
1442 return -1;
1443
1444 /*
1445 * Switch mouse to poll (remote) mode so motion data will not
1446 * get in our way
1447 */
1448 return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL);
1449 }
1450
alps_monitor_mode_send_word(struct psmouse * psmouse,u16 word)1451 static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word)
1452 {
1453 int i, nibble;
1454
1455 /*
1456 * b0-b11 are valid bits, send sequence is inverse.
1457 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1
1458 */
1459 for (i = 0; i <= 8; i += 4) {
1460 nibble = (word >> i) & 0xf;
1461 if (alps_command_mode_send_nibble(psmouse, nibble))
1462 return -1;
1463 }
1464
1465 return 0;
1466 }
1467
alps_monitor_mode_write_reg(struct psmouse * psmouse,u16 addr,u16 value)1468 static int alps_monitor_mode_write_reg(struct psmouse *psmouse,
1469 u16 addr, u16 value)
1470 {
1471 struct ps2dev *ps2dev = &psmouse->ps2dev;
1472
1473 /* 0x0A0 is the command to write the word */
1474 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) ||
1475 alps_monitor_mode_send_word(psmouse, 0x0A0) ||
1476 alps_monitor_mode_send_word(psmouse, addr) ||
1477 alps_monitor_mode_send_word(psmouse, value) ||
1478 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1479 return -1;
1480
1481 return 0;
1482 }
1483
alps_monitor_mode(struct psmouse * psmouse,bool enable)1484 static int alps_monitor_mode(struct psmouse *psmouse, bool enable)
1485 {
1486 struct ps2dev *ps2dev = &psmouse->ps2dev;
1487
1488 if (enable) {
1489 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */
1490 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
1491 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) ||
1492 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1493 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1494 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
1495 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1496 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
1497 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO))
1498 return -1;
1499 } else {
1500 /* EC to exit monitor mode */
1501 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP))
1502 return -1;
1503 }
1504
1505 return 0;
1506 }
1507
alps_absolute_mode_v6(struct psmouse * psmouse)1508 static int alps_absolute_mode_v6(struct psmouse *psmouse)
1509 {
1510 u16 reg_val = 0x181;
1511 int ret = -1;
1512
1513 /* enter monitor mode, to write the register */
1514 if (alps_monitor_mode(psmouse, true))
1515 return -1;
1516
1517 ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val);
1518
1519 if (alps_monitor_mode(psmouse, false))
1520 ret = -1;
1521
1522 return ret;
1523 }
1524
alps_get_status(struct psmouse * psmouse,char * param)1525 static int alps_get_status(struct psmouse *psmouse, char *param)
1526 {
1527 /* Get status: 0xF5 0xF5 0xF5 0xE9 */
1528 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param))
1529 return -1;
1530
1531 return 0;
1532 }
1533
1534 /*
1535 * Turn touchpad tapping on or off. The sequences are:
1536 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable,
1537 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable.
1538 * My guess that 0xE9 (GetInfo) is here as a sync point.
1539 * For models that also have stickpointer (DualPoints) its tapping
1540 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but
1541 * we don't fiddle with it.
1542 */
alps_tap_mode(struct psmouse * psmouse,int enable)1543 static int alps_tap_mode(struct psmouse *psmouse, int enable)
1544 {
1545 struct ps2dev *ps2dev = &psmouse->ps2dev;
1546 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES;
1547 unsigned char tap_arg = enable ? 0x0A : 0x00;
1548 unsigned char param[4];
1549
1550 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) ||
1551 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1552 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1553 ps2_command(ps2dev, &tap_arg, cmd))
1554 return -1;
1555
1556 if (alps_get_status(psmouse, param))
1557 return -1;
1558
1559 return 0;
1560 }
1561
1562 /*
1563 * alps_poll() - poll the touchpad for current motion packet.
1564 * Used in resync.
1565 */
alps_poll(struct psmouse * psmouse)1566 static int alps_poll(struct psmouse *psmouse)
1567 {
1568 struct alps_data *priv = psmouse->private;
1569 unsigned char buf[sizeof(psmouse->packet)];
1570 bool poll_failed;
1571
1572 if (priv->flags & ALPS_PASS)
1573 alps_passthrough_mode_v2(psmouse, true);
1574
1575 poll_failed = ps2_command(&psmouse->ps2dev, buf,
1576 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0;
1577
1578 if (priv->flags & ALPS_PASS)
1579 alps_passthrough_mode_v2(psmouse, false);
1580
1581 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0)
1582 return -1;
1583
1584 if ((psmouse->badbyte & 0xc8) == 0x08) {
1585 /*
1586 * Poll the track stick ...
1587 */
1588 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8)))
1589 return -1;
1590 }
1591
1592 memcpy(psmouse->packet, buf, sizeof(buf));
1593 return 0;
1594 }
1595
alps_hw_init_v1_v2(struct psmouse * psmouse)1596 static int alps_hw_init_v1_v2(struct psmouse *psmouse)
1597 {
1598 struct alps_data *priv = psmouse->private;
1599
1600 if ((priv->flags & ALPS_PASS) &&
1601 alps_passthrough_mode_v2(psmouse, true)) {
1602 return -1;
1603 }
1604
1605 if (alps_tap_mode(psmouse, true)) {
1606 psmouse_warn(psmouse, "Failed to enable hardware tapping\n");
1607 return -1;
1608 }
1609
1610 if (alps_absolute_mode_v1_v2(psmouse)) {
1611 psmouse_err(psmouse, "Failed to enable absolute mode\n");
1612 return -1;
1613 }
1614
1615 if ((priv->flags & ALPS_PASS) &&
1616 alps_passthrough_mode_v2(psmouse, false)) {
1617 return -1;
1618 }
1619
1620 /* ALPS needs stream mode, otherwise it won't report any data */
1621 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) {
1622 psmouse_err(psmouse, "Failed to enable stream mode\n");
1623 return -1;
1624 }
1625
1626 return 0;
1627 }
1628
alps_hw_init_v6(struct psmouse * psmouse)1629 static int alps_hw_init_v6(struct psmouse *psmouse)
1630 {
1631 unsigned char param[2] = {0xC8, 0x14};
1632
1633 /* Enter passthrough mode to let trackpoint enter 6byte raw mode */
1634 if (alps_passthrough_mode_v2(psmouse, true))
1635 return -1;
1636
1637 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1638 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1639 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1640 ps2_command(&psmouse->ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) ||
1641 ps2_command(&psmouse->ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE))
1642 return -1;
1643
1644 if (alps_passthrough_mode_v2(psmouse, false))
1645 return -1;
1646
1647 if (alps_absolute_mode_v6(psmouse)) {
1648 psmouse_err(psmouse, "Failed to enable absolute mode\n");
1649 return -1;
1650 }
1651
1652 return 0;
1653 }
1654
1655 /*
1656 * Enable or disable passthrough mode to the trackstick.
1657 */
alps_passthrough_mode_v3(struct psmouse * psmouse,int reg_base,bool enable)1658 static int alps_passthrough_mode_v3(struct psmouse *psmouse,
1659 int reg_base, bool enable)
1660 {
1661 int reg_val, ret = -1;
1662
1663 if (alps_enter_command_mode(psmouse))
1664 return -1;
1665
1666 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008);
1667 if (reg_val == -1)
1668 goto error;
1669
1670 if (enable)
1671 reg_val |= 0x01;
1672 else
1673 reg_val &= ~0x01;
1674
1675 ret = __alps_command_mode_write_reg(psmouse, reg_val);
1676
1677 error:
1678 if (alps_exit_command_mode(psmouse))
1679 ret = -1;
1680 return ret;
1681 }
1682
1683 /* Must be in command mode when calling this function */
alps_absolute_mode_v3(struct psmouse * psmouse)1684 static int alps_absolute_mode_v3(struct psmouse *psmouse)
1685 {
1686 int reg_val;
1687
1688 reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
1689 if (reg_val == -1)
1690 return -1;
1691
1692 reg_val |= 0x06;
1693 if (__alps_command_mode_write_reg(psmouse, reg_val))
1694 return -1;
1695
1696 return 0;
1697 }
1698
alps_probe_trackstick_v3(struct psmouse * psmouse,int reg_base)1699 static int alps_probe_trackstick_v3(struct psmouse *psmouse, int reg_base)
1700 {
1701 int ret = -EIO, reg_val;
1702
1703 if (alps_enter_command_mode(psmouse))
1704 goto error;
1705
1706 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08);
1707 if (reg_val == -1)
1708 goto error;
1709
1710 /* bit 7: trackstick is present */
1711 ret = reg_val & 0x80 ? 0 : -ENODEV;
1712
1713 error:
1714 alps_exit_command_mode(psmouse);
1715 return ret;
1716 }
1717
alps_setup_trackstick_v3(struct psmouse * psmouse,int reg_base)1718 static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base)
1719 {
1720 struct ps2dev *ps2dev = &psmouse->ps2dev;
1721 int ret = 0;
1722 unsigned char param[4];
1723
1724 if (alps_passthrough_mode_v3(psmouse, reg_base, true))
1725 return -EIO;
1726
1727 /*
1728 * E7 report for the trackstick
1729 *
1730 * There have been reports of failures to seem to trace back
1731 * to the above trackstick check failing. When these occur
1732 * this E7 report fails, so when that happens we continue
1733 * with the assumption that there isn't a trackstick after
1734 * all.
1735 */
1736 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) {
1737 psmouse_warn(psmouse, "trackstick E7 report failed\n");
1738 ret = -ENODEV;
1739 } else {
1740 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param);
1741
1742 /*
1743 * Not sure what this does, but it is absolutely
1744 * essential. Without it, the touchpad does not
1745 * work at all and the trackstick just emits normal
1746 * PS/2 packets.
1747 */
1748 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1749 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1750 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1751 alps_command_mode_send_nibble(psmouse, 0x9) ||
1752 alps_command_mode_send_nibble(psmouse, 0x4)) {
1753 psmouse_err(psmouse,
1754 "Error sending magic E6 sequence\n");
1755 ret = -EIO;
1756 goto error;
1757 }
1758
1759 /*
1760 * This ensures the trackstick packets are in the format
1761 * supported by this driver. If bit 1 isn't set the packet
1762 * format is different.
1763 */
1764 if (alps_enter_command_mode(psmouse) ||
1765 alps_command_mode_write_reg(psmouse,
1766 reg_base + 0x08, 0x82) ||
1767 alps_exit_command_mode(psmouse))
1768 ret = -EIO;
1769 }
1770
1771 error:
1772 if (alps_passthrough_mode_v3(psmouse, reg_base, false))
1773 ret = -EIO;
1774
1775 return ret;
1776 }
1777
alps_hw_init_v3(struct psmouse * psmouse)1778 static int alps_hw_init_v3(struct psmouse *psmouse)
1779 {
1780 struct ps2dev *ps2dev = &psmouse->ps2dev;
1781 int reg_val;
1782 unsigned char param[4];
1783
1784 reg_val = alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE);
1785 if (reg_val == -EIO)
1786 goto error;
1787
1788 if (reg_val == 0 &&
1789 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO)
1790 goto error;
1791
1792 if (alps_enter_command_mode(psmouse) ||
1793 alps_absolute_mode_v3(psmouse)) {
1794 psmouse_err(psmouse, "Failed to enter absolute mode\n");
1795 goto error;
1796 }
1797
1798 reg_val = alps_command_mode_read_reg(psmouse, 0x0006);
1799 if (reg_val == -1)
1800 goto error;
1801 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
1802 goto error;
1803
1804 reg_val = alps_command_mode_read_reg(psmouse, 0x0007);
1805 if (reg_val == -1)
1806 goto error;
1807 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
1808 goto error;
1809
1810 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1)
1811 goto error;
1812 if (__alps_command_mode_write_reg(psmouse, 0x04))
1813 goto error;
1814
1815 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1)
1816 goto error;
1817 if (__alps_command_mode_write_reg(psmouse, 0x03))
1818 goto error;
1819
1820 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1)
1821 goto error;
1822 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03))
1823 goto error;
1824
1825 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1)
1826 goto error;
1827 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04))
1828 goto error;
1829
1830 alps_exit_command_mode(psmouse);
1831
1832 /* Set rate and enable data reporting */
1833 param[0] = 0x64;
1834 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
1835 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
1836 psmouse_err(psmouse, "Failed to enable data reporting\n");
1837 return -1;
1838 }
1839
1840 return 0;
1841
1842 error:
1843 /*
1844 * Leaving the touchpad in command mode will essentially render
1845 * it unusable until the machine reboots, so exit it here just
1846 * to be safe
1847 */
1848 alps_exit_command_mode(psmouse);
1849 return -1;
1850 }
1851
alps_get_v3_v7_resolution(struct psmouse * psmouse,int reg_pitch)1852 static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch)
1853 {
1854 int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys;
1855 struct alps_data *priv = psmouse->private;
1856
1857 reg = alps_command_mode_read_reg(psmouse, reg_pitch);
1858 if (reg < 0)
1859 return reg;
1860
1861 x_pitch = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */
1862 x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */
1863
1864 y_pitch = (char)reg >> 4; /* sign extend upper 4 bits */
1865 y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */
1866
1867 reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1);
1868 if (reg < 0)
1869 return reg;
1870
1871 x_electrode = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */
1872 x_electrode = 17 + x_electrode;
1873
1874 y_electrode = (char)reg >> 4; /* sign extend upper 4 bits */
1875 y_electrode = 13 + y_electrode;
1876
1877 x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */
1878 y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */
1879
1880 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */
1881 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */
1882
1883 psmouse_dbg(psmouse,
1884 "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n",
1885 x_pitch, y_pitch, x_electrode, y_electrode,
1886 x_phys / 10, y_phys / 10, priv->x_res, priv->y_res);
1887
1888 return 0;
1889 }
1890
alps_hw_init_rushmore_v3(struct psmouse * psmouse)1891 static int alps_hw_init_rushmore_v3(struct psmouse *psmouse)
1892 {
1893 struct alps_data *priv = psmouse->private;
1894 struct ps2dev *ps2dev = &psmouse->ps2dev;
1895 int reg_val, ret = -1;
1896
1897 if (priv->flags & ALPS_DUALPOINT) {
1898 reg_val = alps_setup_trackstick_v3(psmouse,
1899 ALPS_REG_BASE_RUSHMORE);
1900 if (reg_val == -EIO)
1901 goto error;
1902 if (reg_val == -ENODEV)
1903 priv->flags &= ~ALPS_DUALPOINT;
1904 }
1905
1906 if (alps_enter_command_mode(psmouse) ||
1907 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 ||
1908 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00))
1909 goto error;
1910
1911 if (alps_get_v3_v7_resolution(psmouse, 0xc2da))
1912 goto error;
1913
1914 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6);
1915 if (reg_val == -1)
1916 goto error;
1917 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd))
1918 goto error;
1919
1920 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64))
1921 goto error;
1922
1923 /* enter absolute mode */
1924 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4);
1925 if (reg_val == -1)
1926 goto error;
1927 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02))
1928 goto error;
1929
1930 alps_exit_command_mode(psmouse);
1931 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
1932
1933 error:
1934 alps_exit_command_mode(psmouse);
1935 return ret;
1936 }
1937
1938 /* Must be in command mode when calling this function */
alps_absolute_mode_v4(struct psmouse * psmouse)1939 static int alps_absolute_mode_v4(struct psmouse *psmouse)
1940 {
1941 int reg_val;
1942
1943 reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
1944 if (reg_val == -1)
1945 return -1;
1946
1947 reg_val |= 0x02;
1948 if (__alps_command_mode_write_reg(psmouse, reg_val))
1949 return -1;
1950
1951 return 0;
1952 }
1953
alps_hw_init_v4(struct psmouse * psmouse)1954 static int alps_hw_init_v4(struct psmouse *psmouse)
1955 {
1956 struct ps2dev *ps2dev = &psmouse->ps2dev;
1957 unsigned char param[4];
1958
1959 if (alps_enter_command_mode(psmouse))
1960 goto error;
1961
1962 if (alps_absolute_mode_v4(psmouse)) {
1963 psmouse_err(psmouse, "Failed to enter absolute mode\n");
1964 goto error;
1965 }
1966
1967 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c))
1968 goto error;
1969
1970 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03))
1971 goto error;
1972
1973 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03))
1974 goto error;
1975
1976 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15))
1977 goto error;
1978
1979 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01))
1980 goto error;
1981
1982 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03))
1983 goto error;
1984
1985 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03))
1986 goto error;
1987
1988 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03))
1989 goto error;
1990
1991 alps_exit_command_mode(psmouse);
1992
1993 /*
1994 * This sequence changes the output from a 9-byte to an
1995 * 8-byte format. All the same data seems to be present,
1996 * just in a more compact format.
1997 */
1998 param[0] = 0xc8;
1999 param[1] = 0x64;
2000 param[2] = 0x50;
2001 if (ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) ||
2002 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE) ||
2003 ps2_command(ps2dev, ¶m[2], PSMOUSE_CMD_SETRATE) ||
2004 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID))
2005 return -1;
2006
2007 /* Set rate and enable data reporting */
2008 param[0] = 0x64;
2009 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
2010 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
2011 psmouse_err(psmouse, "Failed to enable data reporting\n");
2012 return -1;
2013 }
2014
2015 return 0;
2016
2017 error:
2018 /*
2019 * Leaving the touchpad in command mode will essentially render
2020 * it unusable until the machine reboots, so exit it here just
2021 * to be safe
2022 */
2023 alps_exit_command_mode(psmouse);
2024 return -1;
2025 }
2026
alps_dolphin_get_device_area(struct psmouse * psmouse,struct alps_data * priv)2027 static int alps_dolphin_get_device_area(struct psmouse *psmouse,
2028 struct alps_data *priv)
2029 {
2030 struct ps2dev *ps2dev = &psmouse->ps2dev;
2031 unsigned char param[4] = {0};
2032 int num_x_electrode, num_y_electrode;
2033
2034 if (alps_enter_command_mode(psmouse))
2035 return -1;
2036
2037 param[0] = 0x0a;
2038 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
2039 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
2040 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
2041 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) ||
2042 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE))
2043 return -1;
2044
2045 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
2046 return -1;
2047
2048 /*
2049 * Dolphin's sensor line number is not fixed. It can be calculated
2050 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET.
2051 * Further more, we can get device's x_max and y_max by multiplying
2052 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE.
2053 *
2054 * e.g. When we get register's sensor_x = 11 & sensor_y = 8,
2055 * real sensor line number X = 11 + 8 = 19, and
2056 * real sensor line number Y = 8 + 1 = 9.
2057 * So, x_max = (19 - 1) * 64 = 1152, and
2058 * y_max = (9 - 1) * 64 = 512.
2059 */
2060 num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F);
2061 num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F);
2062 priv->x_bits = num_x_electrode;
2063 priv->y_bits = num_y_electrode;
2064 priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE;
2065 priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE;
2066
2067 if (alps_exit_command_mode(psmouse))
2068 return -1;
2069
2070 return 0;
2071 }
2072
alps_hw_init_dolphin_v1(struct psmouse * psmouse)2073 static int alps_hw_init_dolphin_v1(struct psmouse *psmouse)
2074 {
2075 struct ps2dev *ps2dev = &psmouse->ps2dev;
2076 unsigned char param[2];
2077
2078 /* This is dolphin "v1" as empirically defined by florin9doi */
2079 param[0] = 0x64;
2080 param[1] = 0x28;
2081
2082 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
2083 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) ||
2084 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE))
2085 return -1;
2086
2087 return 0;
2088 }
2089
alps_hw_init_v7(struct psmouse * psmouse)2090 static int alps_hw_init_v7(struct psmouse *psmouse)
2091 {
2092 struct ps2dev *ps2dev = &psmouse->ps2dev;
2093 int reg_val, ret = -1;
2094
2095 if (alps_enter_command_mode(psmouse) ||
2096 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1)
2097 goto error;
2098
2099 if (alps_get_v3_v7_resolution(psmouse, 0xc397))
2100 goto error;
2101
2102 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64))
2103 goto error;
2104
2105 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4);
2106 if (reg_val == -1)
2107 goto error;
2108 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02))
2109 goto error;
2110
2111 alps_exit_command_mode(psmouse);
2112 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
2113
2114 error:
2115 alps_exit_command_mode(psmouse);
2116 return ret;
2117 }
2118
alps_set_defaults(struct alps_data * priv)2119 static void alps_set_defaults(struct alps_data *priv)
2120 {
2121 priv->byte0 = 0x8f;
2122 priv->mask0 = 0x8f;
2123 priv->flags = ALPS_DUALPOINT;
2124
2125 priv->x_max = 2000;
2126 priv->y_max = 1400;
2127 priv->x_bits = 15;
2128 priv->y_bits = 11;
2129
2130 switch (priv->proto_version) {
2131 case ALPS_PROTO_V1:
2132 case ALPS_PROTO_V2:
2133 priv->hw_init = alps_hw_init_v1_v2;
2134 priv->process_packet = alps_process_packet_v1_v2;
2135 priv->set_abs_params = alps_set_abs_params_st;
2136 priv->x_max = 1023;
2137 priv->y_max = 767;
2138 break;
2139 case ALPS_PROTO_V3:
2140 priv->hw_init = alps_hw_init_v3;
2141 priv->process_packet = alps_process_packet_v3;
2142 priv->set_abs_params = alps_set_abs_params_mt;
2143 priv->decode_fields = alps_decode_pinnacle;
2144 priv->nibble_commands = alps_v3_nibble_commands;
2145 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2146 break;
2147 case ALPS_PROTO_V4:
2148 priv->hw_init = alps_hw_init_v4;
2149 priv->process_packet = alps_process_packet_v4;
2150 priv->set_abs_params = alps_set_abs_params_mt;
2151 priv->nibble_commands = alps_v4_nibble_commands;
2152 priv->addr_command = PSMOUSE_CMD_DISABLE;
2153 break;
2154 case ALPS_PROTO_V5:
2155 priv->hw_init = alps_hw_init_dolphin_v1;
2156 priv->process_packet = alps_process_touchpad_packet_v3_v5;
2157 priv->decode_fields = alps_decode_dolphin;
2158 priv->set_abs_params = alps_set_abs_params_mt;
2159 priv->nibble_commands = alps_v3_nibble_commands;
2160 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2161 priv->byte0 = 0xc8;
2162 priv->mask0 = 0xd8;
2163 priv->flags = 0;
2164 priv->x_max = 1360;
2165 priv->y_max = 660;
2166 priv->x_bits = 23;
2167 priv->y_bits = 12;
2168 break;
2169 case ALPS_PROTO_V6:
2170 priv->hw_init = alps_hw_init_v6;
2171 priv->process_packet = alps_process_packet_v6;
2172 priv->set_abs_params = alps_set_abs_params_st;
2173 priv->nibble_commands = alps_v6_nibble_commands;
2174 priv->x_max = 2047;
2175 priv->y_max = 1535;
2176 break;
2177 case ALPS_PROTO_V7:
2178 priv->hw_init = alps_hw_init_v7;
2179 priv->process_packet = alps_process_packet_v7;
2180 priv->decode_fields = alps_decode_packet_v7;
2181 priv->set_abs_params = alps_set_abs_params_mt;
2182 priv->nibble_commands = alps_v3_nibble_commands;
2183 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2184 priv->x_max = 0xfff;
2185 priv->y_max = 0x7ff;
2186 priv->byte0 = 0x48;
2187 priv->mask0 = 0x48;
2188
2189 if (priv->fw_ver[1] != 0xba)
2190 priv->flags |= ALPS_BUTTONPAD;
2191 break;
2192 }
2193 }
2194
alps_match_table(struct psmouse * psmouse,struct alps_data * priv,unsigned char * e7,unsigned char * ec)2195 static int alps_match_table(struct psmouse *psmouse, struct alps_data *priv,
2196 unsigned char *e7, unsigned char *ec)
2197 {
2198 const struct alps_model_info *model;
2199 int i;
2200
2201 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) {
2202 model = &alps_model_data[i];
2203
2204 if (!memcmp(e7, model->signature, sizeof(model->signature)) &&
2205 (!model->command_mode_resp ||
2206 model->command_mode_resp == ec[2])) {
2207
2208 priv->proto_version = model->proto_version;
2209 alps_set_defaults(priv);
2210
2211 priv->flags = model->flags;
2212 priv->byte0 = model->byte0;
2213 priv->mask0 = model->mask0;
2214
2215 return 0;
2216 }
2217 }
2218
2219 return -EINVAL;
2220 }
2221
alps_identify(struct psmouse * psmouse,struct alps_data * priv)2222 static int alps_identify(struct psmouse *psmouse, struct alps_data *priv)
2223 {
2224 unsigned char e6[4], e7[4], ec[4];
2225
2226 /*
2227 * First try "E6 report".
2228 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed.
2229 * The bits 0-2 of the first byte will be 1s if some buttons are
2230 * pressed.
2231 */
2232 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
2233 PSMOUSE_CMD_SETSCALE11, e6))
2234 return -EIO;
2235
2236 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100))
2237 return -EINVAL;
2238
2239 /*
2240 * Now get the "E7" and "EC" reports. These will uniquely identify
2241 * most ALPS touchpads.
2242 */
2243 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
2244 PSMOUSE_CMD_SETSCALE21, e7) ||
2245 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
2246 PSMOUSE_CMD_RESET_WRAP, ec) ||
2247 alps_exit_command_mode(psmouse))
2248 return -EIO;
2249
2250 /* Save the Firmware version */
2251 memcpy(priv->fw_ver, ec, 3);
2252
2253 if (alps_match_table(psmouse, priv, e7, ec) == 0) {
2254 return 0;
2255 } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 &&
2256 ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) {
2257 priv->proto_version = ALPS_PROTO_V5;
2258 alps_set_defaults(priv);
2259 if (alps_dolphin_get_device_area(psmouse, priv))
2260 return -EIO;
2261 else
2262 return 0;
2263 } else if (ec[0] == 0x88 &&
2264 ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) {
2265 priv->proto_version = ALPS_PROTO_V7;
2266 alps_set_defaults(priv);
2267
2268 return 0;
2269 } else if (ec[0] == 0x88 && ec[1] == 0x08) {
2270 priv->proto_version = ALPS_PROTO_V3;
2271 alps_set_defaults(priv);
2272
2273 priv->hw_init = alps_hw_init_rushmore_v3;
2274 priv->decode_fields = alps_decode_rushmore;
2275 priv->x_bits = 16;
2276 priv->y_bits = 12;
2277 priv->flags |= ALPS_IS_RUSHMORE;
2278
2279 /* hack to make addr_command, nibble_command available */
2280 psmouse->private = priv;
2281
2282 if (alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_RUSHMORE))
2283 priv->flags &= ~ALPS_DUALPOINT;
2284
2285 return 0;
2286 } else if (ec[0] == 0x88 && ec[1] == 0x07 &&
2287 ec[2] >= 0x90 && ec[2] <= 0x9d) {
2288 priv->proto_version = ALPS_PROTO_V3;
2289 alps_set_defaults(priv);
2290
2291 return 0;
2292 }
2293
2294 psmouse_dbg(psmouse,
2295 "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec);
2296
2297 return -EINVAL;
2298 }
2299
alps_reconnect(struct psmouse * psmouse)2300 static int alps_reconnect(struct psmouse *psmouse)
2301 {
2302 struct alps_data *priv = psmouse->private;
2303
2304 psmouse_reset(psmouse);
2305
2306 if (alps_identify(psmouse, priv) < 0)
2307 return -1;
2308
2309 return priv->hw_init(psmouse);
2310 }
2311
alps_disconnect(struct psmouse * psmouse)2312 static void alps_disconnect(struct psmouse *psmouse)
2313 {
2314 struct alps_data *priv = psmouse->private;
2315
2316 psmouse_reset(psmouse);
2317 del_timer_sync(&priv->timer);
2318 input_unregister_device(priv->dev2);
2319 kfree(priv);
2320 }
2321
alps_set_abs_params_st(struct alps_data * priv,struct input_dev * dev1)2322 static void alps_set_abs_params_st(struct alps_data *priv,
2323 struct input_dev *dev1)
2324 {
2325 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0);
2326 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0);
2327 }
2328
alps_set_abs_params_mt(struct alps_data * priv,struct input_dev * dev1)2329 static void alps_set_abs_params_mt(struct alps_data *priv,
2330 struct input_dev *dev1)
2331 {
2332 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0);
2333 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0);
2334
2335 input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res);
2336 input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res);
2337
2338 input_mt_init_slots(dev1, MAX_TOUCHES, INPUT_MT_POINTER |
2339 INPUT_MT_DROP_UNUSED | INPUT_MT_TRACK | INPUT_MT_SEMI_MT);
2340
2341 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit);
2342 set_bit(BTN_TOOL_QUADTAP, dev1->keybit);
2343
2344 /* V7 is real multi-touch */
2345 if (priv->proto_version == ALPS_PROTO_V7)
2346 clear_bit(INPUT_PROP_SEMI_MT, dev1->propbit);
2347 }
2348
alps_init(struct psmouse * psmouse)2349 int alps_init(struct psmouse *psmouse)
2350 {
2351 struct alps_data *priv;
2352 struct input_dev *dev1 = psmouse->dev, *dev2;
2353
2354 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL);
2355 dev2 = input_allocate_device();
2356 if (!priv || !dev2)
2357 goto init_fail;
2358
2359 priv->dev2 = dev2;
2360 setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse);
2361
2362 psmouse->private = priv;
2363
2364 psmouse_reset(psmouse);
2365
2366 if (alps_identify(psmouse, priv) < 0)
2367 goto init_fail;
2368
2369 if (priv->hw_init(psmouse))
2370 goto init_fail;
2371
2372 /*
2373 * Undo part of setup done for us by psmouse core since touchpad
2374 * is not a relative device.
2375 */
2376 __clear_bit(EV_REL, dev1->evbit);
2377 __clear_bit(REL_X, dev1->relbit);
2378 __clear_bit(REL_Y, dev1->relbit);
2379
2380 /*
2381 * Now set up our capabilities.
2382 */
2383 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY);
2384 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH);
2385 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER);
2386 dev1->keybit[BIT_WORD(BTN_LEFT)] |=
2387 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
2388
2389 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS);
2390
2391 priv->set_abs_params(priv, dev1);
2392 /* No pressure on V7 */
2393 if (priv->proto_version != ALPS_PROTO_V7)
2394 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
2395
2396 if (priv->flags & ALPS_WHEEL) {
2397 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL);
2398 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL);
2399 }
2400
2401 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
2402 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD);
2403 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK);
2404 }
2405
2406 if (priv->flags & ALPS_FOUR_BUTTONS) {
2407 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0);
2408 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1);
2409 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2);
2410 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3);
2411 } else if (priv->flags & ALPS_BUTTONPAD) {
2412 set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit);
2413 clear_bit(BTN_RIGHT, dev1->keybit);
2414 } else {
2415 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE);
2416 }
2417
2418 snprintf(priv->phys, sizeof(priv->phys), "%s/input1", psmouse->ps2dev.serio->phys);
2419 dev2->phys = priv->phys;
2420 dev2->name = (priv->flags & ALPS_DUALPOINT) ?
2421 "DualPoint Stick" : "ALPS PS/2 Device";
2422 dev2->id.bustype = BUS_I8042;
2423 dev2->id.vendor = 0x0002;
2424 dev2->id.product = PSMOUSE_ALPS;
2425 dev2->id.version = 0x0000;
2426 dev2->dev.parent = &psmouse->ps2dev.serio->dev;
2427
2428 dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
2429 dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
2430 dev2->keybit[BIT_WORD(BTN_LEFT)] =
2431 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
2432
2433 __set_bit(INPUT_PROP_POINTER, dev2->propbit);
2434 if (priv->flags & ALPS_DUALPOINT)
2435 __set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit);
2436
2437 if (input_register_device(priv->dev2))
2438 goto init_fail;
2439
2440 psmouse->protocol_handler = alps_process_byte;
2441 psmouse->poll = alps_poll;
2442 psmouse->disconnect = alps_disconnect;
2443 psmouse->reconnect = alps_reconnect;
2444 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6;
2445
2446 /* We are having trouble resyncing ALPS touchpads so disable it for now */
2447 psmouse->resync_time = 0;
2448
2449 /* Allow 2 invalid packets without resetting device */
2450 psmouse->resetafter = psmouse->pktsize * 2;
2451
2452 return 0;
2453
2454 init_fail:
2455 psmouse_reset(psmouse);
2456 input_free_device(dev2);
2457 kfree(priv);
2458 psmouse->private = NULL;
2459 return -1;
2460 }
2461
alps_detect(struct psmouse * psmouse,bool set_properties)2462 int alps_detect(struct psmouse *psmouse, bool set_properties)
2463 {
2464 struct alps_data dummy;
2465
2466 if (alps_identify(psmouse, &dummy) < 0)
2467 return -1;
2468
2469 if (set_properties) {
2470 psmouse->vendor = "ALPS";
2471 psmouse->name = dummy.flags & ALPS_DUALPOINT ?
2472 "DualPoint TouchPad" : "GlidePoint";
2473 psmouse->model = dummy.proto_version << 8;
2474 }
2475 return 0;
2476 }
2477
2478