?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
x86/topology: Fix function name in documentation
[cris-mirror.git] / drivers / input / mouse / alps.c
blobdbe57da8c1a1ba5c9339cd6ac8596d76665c5d9f
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 #include <linux/dmi.h>
24
25 #include "psmouse.h"
26 #include "alps.h"
27
28 /*
29 * Definitions for ALPS version 3 and 4 command mode protocol
30 */
31 #define ALPS_CMD_NIBBLE_10 0x01f2
32
33 #define ALPS_REG_BASE_RUSHMORE 0xc2c0
34 #define ALPS_REG_BASE_V7 0xc2c0
35 #define ALPS_REG_BASE_PINNACLE 0x0000
36
37 static const struct alps_nibble_commands alps_v3_nibble_commands[] = {
38 { PSMOUSE_CMD_SETPOLL, 0x00 }, /* 0 */
39 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */
40 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */
41 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */
42 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */
43 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */
44 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */
45 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */
46 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */
47 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */
48 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */
49 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */
50 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */
51 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */
52 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */
53 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */
54 };
55
56 static const struct alps_nibble_commands alps_v4_nibble_commands[] = {
57 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */
58 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */
59 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */
60 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */
61 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */
62 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */
63 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */
64 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */
65 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */
66 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */
67 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */
68 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */
69 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */
70 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */
71 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */
72 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */
73 };
74
75 static const struct alps_nibble_commands alps_v6_nibble_commands[] = {
76 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */
77 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 1 */
78 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 2 */
79 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 3 */
80 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 4 */
81 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 5 */
82 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 6 */
83 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 7 */
84 { PSMOUSE_CMD_GETID, 0x00 }, /* 8 */
85 { PSMOUSE_CMD_GETINFO, 0x00 }, /* 9 */
86 { PSMOUSE_CMD_SETRES, 0x00 }, /* a */
87 { PSMOUSE_CMD_SETRES, 0x01 }, /* b */
88 { PSMOUSE_CMD_SETRES, 0x02 }, /* c */
89 { PSMOUSE_CMD_SETRES, 0x03 }, /* d */
90 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* e */
91 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */
92 };
93
94
95 #define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */
96 #define ALPS_PASS 0x04 /* device has a pass-through port */
97
98 #define ALPS_WHEEL 0x08 /* hardware wheel present */
99 #define ALPS_FW_BK_1 0x10 /* front & back buttons present */
100 #define ALPS_FW_BK_2 0x20 /* front & back buttons present */
101 #define ALPS_FOUR_BUTTONS 0x40 /* 4 direction button present */
102 #define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with
103 6-byte ALPS packet */
104 #define ALPS_STICK_BITS 0x100 /* separate stick button bits */
105 #define ALPS_BUTTONPAD 0x200 /* device is a clickpad */
106 #define ALPS_DUALPOINT_WITH_PRESSURE 0x400 /* device can report trackpoint pressure */
107
108 static const struct alps_model_info alps_model_data[] = {
109 /*
110 * XXX This entry is suspicious. First byte has zero lower nibble,
111 * which is what a normal mouse would report. Also, the value 0x0e
112 * isn't valid per PS/2 spec.
113 */
114 { { 0x20, 0x02, 0x0e }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } },
115
116 { { 0x22, 0x02, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } },
117 { { 0x22, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D600 */
118 { { 0x32, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Toshiba Salellite Pro M10 */
119 { { 0x33, 0x02, 0x0a }, { ALPS_PROTO_V1, 0x88, 0xf8, 0 } }, /* UMAX-530T */
120 { { 0x52, 0x01, 0x14 }, { ALPS_PROTO_V2, 0xff, 0xff,
121 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, /* Toshiba Tecra A11-11L */
122 { { 0x53, 0x02, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
123 { { 0x53, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
124 { { 0x60, 0x03, 0xc8 }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, /* HP ze1115 */
125 { { 0x62, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xcf, 0xcf,
126 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, /* Dell Latitude E5500, E6400, E6500, Precision M4400 */
127 { { 0x63, 0x02, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
128 { { 0x63, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
129 { { 0x63, 0x02, 0x28 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Fujitsu Siemens S6010 */
130 { { 0x63, 0x02, 0x3c }, { ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL } }, /* Toshiba Satellite S2400-103 */
131 { { 0x63, 0x02, 0x50 }, { ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 } }, /* NEC Versa L320 */
132 { { 0x63, 0x02, 0x64 }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
133 { { 0x63, 0x03, 0xc8 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D800 */
134 { { 0x73, 0x00, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT } }, /* ThinkPad R61 8918-5QG */
135 { { 0x73, 0x00, 0x14 }, { ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT } }, /* Dell XT2 */
136 { { 0x73, 0x02, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
137 { { 0x73, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Ahtec Laptop */
138 { { 0x73, 0x02, 0x50 }, { ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS } }, /* Dell Vostro 1400 */
139 };
140
141 static const struct alps_protocol_info alps_v3_protocol_data = {
142 ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT
143 };
144
145 static const struct alps_protocol_info alps_v3_rushmore_data = {
146 ALPS_PROTO_V3_RUSHMORE, 0x8f, 0x8f, ALPS_DUALPOINT
147 };
148
149 static const struct alps_protocol_info alps_v4_protocol_data = {
150 ALPS_PROTO_V4, 0x8f, 0x8f, 0
151 };
152
153 static const struct alps_protocol_info alps_v5_protocol_data = {
154 ALPS_PROTO_V5, 0xc8, 0xd8, 0
155 };
156
157 static const struct alps_protocol_info alps_v7_protocol_data = {
158 ALPS_PROTO_V7, 0x48, 0x48, ALPS_DUALPOINT
159 };
160
161 static const struct alps_protocol_info alps_v8_protocol_data = {
162 ALPS_PROTO_V8, 0x18, 0x18, 0
163 };
164
165 static const struct alps_protocol_info alps_v9_protocol_data = {
166 ALPS_PROTO_V9, 0xc8, 0xc8, 0
167 };
168
169 /*
170 * Some v2 models report the stick buttons in separate bits
171 */
172 static const struct dmi_system_id alps_dmi_has_separate_stick_buttons[] = {
173 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
174 {
175 /* Extrapolated from other entries */
176 .matches = {
177 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
178 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D420"),
179 },
180 },
181 {
182 /* Reported-by: Hans de Bruin <jmdebruin@xmsnet.nl> */
183 .matches = {
184 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
185 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D430"),
186 },
187 },
188 {
189 /* Reported-by: Hans de Goede <hdegoede@redhat.com> */
190 .matches = {
191 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
192 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D620"),
193 },
194 },
195 {
196 /* Extrapolated from other entries */
197 .matches = {
198 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
199 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D630"),
200 },
201 },
202 #endif
203 { }
204 };
205
206 static void alps_set_abs_params_st(struct alps_data *priv,
207 struct input_dev *dev1);
208 static void alps_set_abs_params_semi_mt(struct alps_data *priv,
209 struct input_dev *dev1);
210 static void alps_set_abs_params_v7(struct alps_data *priv,
211 struct input_dev *dev1);
212 static void alps_set_abs_params_ss4_v2(struct alps_data *priv,
213 struct input_dev *dev1);
214
215 /* Packet formats are described in Documentation/input/alps.txt */
216
217 static bool alps_is_valid_first_byte(struct alps_data *priv,
218 unsigned char data)
219 {
220 return (data & priv->mask0) == priv->byte0;
221 }
222
223 static void alps_report_buttons(struct input_dev *dev1, struct input_dev *dev2,
224 int left, int right, int middle)
225 {
226 struct input_dev *dev;
227
228 /*
229 * If shared button has already been reported on the
230 * other device (dev2) then this event should be also
231 * sent through that device.
232 */
233 dev = (dev2 && test_bit(BTN_LEFT, dev2->key)) ? dev2 : dev1;
234 input_report_key(dev, BTN_LEFT, left);
235
236 dev = (dev2 && test_bit(BTN_RIGHT, dev2->key)) ? dev2 : dev1;
237 input_report_key(dev, BTN_RIGHT, right);
238
239 dev = (dev2 && test_bit(BTN_MIDDLE, dev2->key)) ? dev2 : dev1;
240 input_report_key(dev, BTN_MIDDLE, middle);
241
242 /*
243 * Sync the _other_ device now, we'll do the first
244 * device later once we report the rest of the events.
245 */
246 if (dev2)
247 input_sync(dev2);
248 }
249
250 static void alps_process_packet_v1_v2(struct psmouse *psmouse)
251 {
252 struct alps_data *priv = psmouse->private;
253 unsigned char *packet = psmouse->packet;
254 struct input_dev *dev = psmouse->dev;
255 struct input_dev *dev2 = priv->dev2;
256 int x, y, z, ges, fin, left, right, middle;
257 int back = 0, forward = 0;
258
259 if (priv->proto_version == ALPS_PROTO_V1) {
260 left = packet[2] & 0x10;
261 right = packet[2] & 0x08;
262 middle = 0;
263 x = packet[1] | ((packet[0] & 0x07) << 7);
264 y = packet[4] | ((packet[3] & 0x07) << 7);
265 z = packet[5];
266 } else {
267 left = packet[3] & 1;
268 right = packet[3] & 2;
269 middle = packet[3] & 4;
270 x = packet[1] | ((packet[2] & 0x78) << (7 - 3));
271 y = packet[4] | ((packet[3] & 0x70) << (7 - 4));
272 z = packet[5];
273 }
274
275 if (priv->flags & ALPS_FW_BK_1) {
276 back = packet[0] & 0x10;
277 forward = packet[2] & 4;
278 }
279
280 if (priv->flags & ALPS_FW_BK_2) {
281 back = packet[3] & 4;
282 forward = packet[2] & 4;
283 if ((middle = forward && back))
284 forward = back = 0;
285 }
286
287 ges = packet[2] & 1;
288 fin = packet[2] & 2;
289
290 if ((priv->flags & ALPS_DUALPOINT) && z == 127) {
291 input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x));
292 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y));
293
294 alps_report_buttons(dev2, dev, left, right, middle);
295
296 input_sync(dev2);
297 return;
298 }
299
300 /* Some models have separate stick button bits */
301 if (priv->flags & ALPS_STICK_BITS) {
302 left |= packet[0] & 1;
303 right |= packet[0] & 2;
304 middle |= packet[0] & 4;
305 }
306
307 alps_report_buttons(dev, dev2, left, right, middle);
308
309 /* Convert hardware tap to a reasonable Z value */
310 if (ges && !fin)
311 z = 40;
312
313 /*
314 * A "tap and drag" operation is reported by the hardware as a transition
315 * from (!fin && ges) to (fin && ges). This should be translated to the
316 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually.
317 */
318 if (ges && fin && !priv->prev_fin) {
319 input_report_abs(dev, ABS_X, x);
320 input_report_abs(dev, ABS_Y, y);
321 input_report_abs(dev, ABS_PRESSURE, 0);
322 input_report_key(dev, BTN_TOOL_FINGER, 0);
323 input_sync(dev);
324 }
325 priv->prev_fin = fin;
326
327 if (z > 30)
328 input_report_key(dev, BTN_TOUCH, 1);
329 if (z < 25)
330 input_report_key(dev, BTN_TOUCH, 0);
331
332 if (z > 0) {
333 input_report_abs(dev, ABS_X, x);
334 input_report_abs(dev, ABS_Y, y);
335 }
336
337 input_report_abs(dev, ABS_PRESSURE, z);
338 input_report_key(dev, BTN_TOOL_FINGER, z > 0);
339
340 if (priv->flags & ALPS_WHEEL)
341 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07));
342
343 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
344 input_report_key(dev, BTN_FORWARD, forward);
345 input_report_key(dev, BTN_BACK, back);
346 }
347
348 if (priv->flags & ALPS_FOUR_BUTTONS) {
349 input_report_key(dev, BTN_0, packet[2] & 4);
350 input_report_key(dev, BTN_1, packet[0] & 0x10);
351 input_report_key(dev, BTN_2, packet[3] & 4);
352 input_report_key(dev, BTN_3, packet[0] & 0x20);
353 }
354
355 input_sync(dev);
356 }
357
358 static void alps_get_bitmap_points(unsigned int map,
359 struct alps_bitmap_point *low,
360 struct alps_bitmap_point *high,
361 int *fingers)
362 {
363 struct alps_bitmap_point *point;
364 int i, bit, prev_bit = 0;
365
366 point = low;
367 for (i = 0; map != 0; i++, map >>= 1) {
368 bit = map & 1;
369 if (bit) {
370 if (!prev_bit) {
371 point->start_bit = i;
372 point->num_bits = 0;
373 (*fingers)++;
374 }
375 point->num_bits++;
376 } else {
377 if (prev_bit)
378 point = high;
379 }
380 prev_bit = bit;
381 }
382 }
383
384 /*
385 * Process bitmap data from semi-mt protocols. Returns the number of
386 * fingers detected. A return value of 0 means at least one of the
387 * bitmaps was empty.
388 *
389 * The bitmaps don't have enough data to track fingers, so this function
390 * only generates points representing a bounding box of all contacts.
391 * These points are returned in fields->mt when the return value
392 * is greater than 0.
393 */
394 static int alps_process_bitmap(struct alps_data *priv,
395 struct alps_fields *fields)
396 {
397 int i, fingers_x = 0, fingers_y = 0, fingers, closest;
398 struct alps_bitmap_point x_low = {0,}, x_high = {0,};
399 struct alps_bitmap_point y_low = {0,}, y_high = {0,};
400 struct input_mt_pos corner[4];
401
402 if (!fields->x_map || !fields->y_map)
403 return 0;
404
405 alps_get_bitmap_points(fields->x_map, &x_low, &x_high, &fingers_x);
406 alps_get_bitmap_points(fields->y_map, &y_low, &y_high, &fingers_y);
407
408 /*
409 * Fingers can overlap, so we use the maximum count of fingers
410 * on either axis as the finger count.
411 */
412 fingers = max(fingers_x, fingers_y);
413
414 /*
415 * If an axis reports only a single contact, we have overlapping or
416 * adjacent fingers. Divide the single contact between the two points.
417 */
418 if (fingers_x == 1) {
419 i = (x_low.num_bits - 1) / 2;
420 x_low.num_bits = x_low.num_bits - i;
421 x_high.start_bit = x_low.start_bit + i;
422 x_high.num_bits = max(i, 1);
423 }
424 if (fingers_y == 1) {
425 i = (y_low.num_bits - 1) / 2;
426 y_low.num_bits = y_low.num_bits - i;
427 y_high.start_bit = y_low.start_bit + i;
428 y_high.num_bits = max(i, 1);
429 }
430
431 /* top-left corner */
432 corner[0].x =
433 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) /
434 (2 * (priv->x_bits - 1));
435 corner[0].y =
436 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) /
437 (2 * (priv->y_bits - 1));
438
439 /* top-right corner */
440 corner[1].x =
441 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) /
442 (2 * (priv->x_bits - 1));
443 corner[1].y =
444 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) /
445 (2 * (priv->y_bits - 1));
446
447 /* bottom-right corner */
448 corner[2].x =
449 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) /
450 (2 * (priv->x_bits - 1));
451 corner[2].y =
452 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) /
453 (2 * (priv->y_bits - 1));
454
455 /* bottom-left corner */
456 corner[3].x =
457 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) /
458 (2 * (priv->x_bits - 1));
459 corner[3].y =
460 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) /
461 (2 * (priv->y_bits - 1));
462
463 /* x-bitmap order is reversed on v5 touchpads */
464 if (priv->proto_version == ALPS_PROTO_V5) {
465 for (i = 0; i < 4; i++)
466 corner[i].x = priv->x_max - corner[i].x;
467 }
468
469 /* y-bitmap order is reversed on v3 and v4 touchpads */
470 if (priv->proto_version == ALPS_PROTO_V3 ||
471 priv->proto_version == ALPS_PROTO_V4) {
472 for (i = 0; i < 4; i++)
473 corner[i].y = priv->y_max - corner[i].y;
474 }
475
476 /*
477 * We only select a corner for the second touch once per 2 finger
478 * touch sequence to avoid the chosen corner (and thus the coordinates)
479 * jumping around when the first touch is in the middle.
480 */
481 if (priv->second_touch == -1) {
482 /* Find corner closest to our st coordinates */
483 closest = 0x7fffffff;
484 for (i = 0; i < 4; i++) {
485 int dx = fields->st.x - corner[i].x;
486 int dy = fields->st.y - corner[i].y;
487 int distance = dx * dx + dy * dy;
488
489 if (distance < closest) {
490 priv->second_touch = i;
491 closest = distance;
492 }
493 }
494 /* And select the opposite corner to use for the 2nd touch */
495 priv->second_touch = (priv->second_touch + 2) % 4;
496 }
497
498 fields->mt[0] = fields->st;
499 fields->mt[1] = corner[priv->second_touch];
500
501 return fingers;
502 }
503
504 static void alps_set_slot(struct input_dev *dev, int slot, int x, int y)
505 {
506 input_mt_slot(dev, slot);
507 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
508 input_report_abs(dev, ABS_MT_POSITION_X, x);
509 input_report_abs(dev, ABS_MT_POSITION_Y, y);
510 }
511
512 static void alps_report_mt_data(struct psmouse *psmouse, int n)
513 {
514 struct alps_data *priv = psmouse->private;
515 struct input_dev *dev = psmouse->dev;
516 struct alps_fields *f = &priv->f;
517 int i, slot[MAX_TOUCHES];
518
519 input_mt_assign_slots(dev, slot, f->mt, n, 0);
520 for (i = 0; i < n; i++)
521 alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y);
522
523 input_mt_sync_frame(dev);
524 }
525
526 static void alps_report_semi_mt_data(struct psmouse *psmouse, int fingers)
527 {
528 struct alps_data *priv = psmouse->private;
529 struct input_dev *dev = psmouse->dev;
530 struct alps_fields *f = &priv->f;
531
532 /* Use st data when we don't have mt data */
533 if (fingers < 2) {
534 f->mt[0].x = f->st.x;
535 f->mt[0].y = f->st.y;
536 fingers = f->pressure > 0 ? 1 : 0;
537 priv->second_touch = -1;
538 }
539
540 if (fingers >= 1)
541 alps_set_slot(dev, 0, f->mt[0].x, f->mt[0].y);
542 if (fingers >= 2)
543 alps_set_slot(dev, 1, f->mt[1].x, f->mt[1].y);
544 input_mt_sync_frame(dev);
545
546 input_mt_report_finger_count(dev, fingers);
547
548 input_report_key(dev, BTN_LEFT, f->left);
549 input_report_key(dev, BTN_RIGHT, f->right);
550 input_report_key(dev, BTN_MIDDLE, f->middle);
551
552 input_report_abs(dev, ABS_PRESSURE, f->pressure);
553
554 input_sync(dev);
555 }
556
557 static void alps_process_trackstick_packet_v3(struct psmouse *psmouse)
558 {
559 struct alps_data *priv = psmouse->private;
560 unsigned char *packet = psmouse->packet;
561 struct input_dev *dev = priv->dev2;
562 int x, y, z, left, right, middle;
563
564 /* It should be a DualPoint when received trackstick packet */
565 if (!(priv->flags & ALPS_DUALPOINT)) {
566 psmouse_warn(psmouse,
567 "Rejected trackstick packet from non DualPoint device");
568 return;
569 }
570
571 /* Sanity check packet */
572 if (!(packet[0] & 0x40)) {
573 psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n");
574 return;
575 }
576
577 /*
578 * There's a special packet that seems to indicate the end
579 * of a stream of trackstick data. Filter these out.
580 */
581 if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f)
582 return;
583
584 x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f));
585 y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f));
586 z = (packet[4] & 0x7c) >> 2;
587
588 /*
589 * The x and y values tend to be quite large, and when used
590 * alone the trackstick is difficult to use. Scale them down
591 * to compensate.
592 */
593 x /= 8;
594 y /= 8;
595
596 input_report_rel(dev, REL_X, x);
597 input_report_rel(dev, REL_Y, -y);
598
599 /*
600 * Most ALPS models report the trackstick buttons in the touchpad
601 * packets, but a few report them here. No reliable way has been
602 * found to differentiate between the models upfront, so we enable
603 * the quirk in response to seeing a button press in the trackstick
604 * packet.
605 */
606 left = packet[3] & 0x01;
607 right = packet[3] & 0x02;
608 middle = packet[3] & 0x04;
609
610 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) &&
611 (left || right || middle))
612 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS;
613
614 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) {
615 input_report_key(dev, BTN_LEFT, left);
616 input_report_key(dev, BTN_RIGHT, right);
617 input_report_key(dev, BTN_MIDDLE, middle);
618 }
619
620 input_sync(dev);
621 return;
622 }
623
624 static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p)
625 {
626 f->left = !!(p[3] & 0x01);
627 f->right = !!(p[3] & 0x02);
628 f->middle = !!(p[3] & 0x04);
629
630 f->ts_left = !!(p[3] & 0x10);
631 f->ts_right = !!(p[3] & 0x20);
632 f->ts_middle = !!(p[3] & 0x40);
633 }
634
635 static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p,
636 struct psmouse *psmouse)
637 {
638 f->first_mp = !!(p[4] & 0x40);
639 f->is_mp = !!(p[0] & 0x40);
640
641 if (f->is_mp) {
642 f->fingers = (p[5] & 0x3) + 1;
643 f->x_map = ((p[4] & 0x7e) << 8) |
644 ((p[1] & 0x7f) << 2) |
645 ((p[0] & 0x30) >> 4);
646 f->y_map = ((p[3] & 0x70) << 4) |
647 ((p[2] & 0x7f) << 1) |
648 (p[4] & 0x01);
649 } else {
650 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) |
651 ((p[0] & 0x30) >> 4);
652 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f);
653 f->pressure = p[5] & 0x7f;
654
655 alps_decode_buttons_v3(f, p);
656 }
657
658 return 0;
659 }
660
661 static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p,
662 struct psmouse *psmouse)
663 {
664 f->first_mp = !!(p[4] & 0x40);
665 f->is_mp = !!(p[5] & 0x40);
666
667 if (f->is_mp) {
668 f->fingers = max((p[5] & 0x3), ((p[5] >> 2) & 0x3)) + 1;
669 f->x_map = ((p[5] & 0x10) << 11) |
670 ((p[4] & 0x7e) << 8) |
671 ((p[1] & 0x7f) << 2) |
672 ((p[0] & 0x30) >> 4);
673 f->y_map = ((p[5] & 0x20) << 6) |
674 ((p[3] & 0x70) << 4) |
675 ((p[2] & 0x7f) << 1) |
676 (p[4] & 0x01);
677 } else {
678 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) |
679 ((p[0] & 0x30) >> 4);
680 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f);
681 f->pressure = p[5] & 0x7f;
682
683 alps_decode_buttons_v3(f, p);
684 }
685
686 return 0;
687 }
688
689 static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p,
690 struct psmouse *psmouse)
691 {
692 u64 palm_data = 0;
693 struct alps_data *priv = psmouse->private;
694
695 f->first_mp = !!(p[0] & 0x02);
696 f->is_mp = !!(p[0] & 0x20);
697
698 if (!f->is_mp) {
699 f->st.x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7));
700 f->st.y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3));
701 f->pressure = (p[0] & 4) ? 0 : p[5] & 0x7f;
702 alps_decode_buttons_v3(f, p);
703 } else {
704 f->fingers = ((p[0] & 0x6) >> 1 |
705 (p[0] & 0x10) >> 2);
706
707 palm_data = (p[1] & 0x7f) |
708 ((p[2] & 0x7f) << 7) |
709 ((p[4] & 0x7f) << 14) |
710 ((p[5] & 0x7f) << 21) |
711 ((p[3] & 0x07) << 28) |
712 (((u64)p[3] & 0x70) << 27) |
713 (((u64)p[0] & 0x01) << 34);
714
715 /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */
716 f->y_map = palm_data & (BIT(priv->y_bits) - 1);
717
718 /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */
719 f->x_map = (palm_data >> priv->y_bits) &
720 (BIT(priv->x_bits) - 1);
721 }
722
723 return 0;
724 }
725
726 static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse)
727 {
728 struct alps_data *priv = psmouse->private;
729 unsigned char *packet = psmouse->packet;
730 struct input_dev *dev2 = priv->dev2;
731 struct alps_fields *f = &priv->f;
732 int fingers = 0;
733
734 memset(f, 0, sizeof(*f));
735
736 priv->decode_fields(f, packet, psmouse);
737
738 /*
739 * There's no single feature of touchpad position and bitmap packets
740 * that can be used to distinguish between them. We rely on the fact
741 * that a bitmap packet should always follow a position packet with
742 * bit 6 of packet[4] set.
743 */
744 if (priv->multi_packet) {
745 /*
746 * Sometimes a position packet will indicate a multi-packet
747 * sequence, but then what follows is another position
748 * packet. Check for this, and when it happens process the
749 * position packet as usual.
750 */
751 if (f->is_mp) {
752 fingers = f->fingers;
753 /*
754 * Bitmap processing uses position packet's coordinate
755 * data, so we need to do decode it first.
756 */
757 priv->decode_fields(f, priv->multi_data, psmouse);
758 if (alps_process_bitmap(priv, f) == 0)
759 fingers = 0; /* Use st data */
760 } else {
761 priv->multi_packet = 0;
762 }
763 }
764
765 /*
766 * Bit 6 of byte 0 is not usually set in position packets. The only
767 * times it seems to be set is in situations where the data is
768 * suspect anyway, e.g. a palm resting flat on the touchpad. Given
769 * this combined with the fact that this bit is useful for filtering
770 * out misidentified bitmap packets, we reject anything with this
771 * bit set.
772 */
773 if (f->is_mp)
774 return;
775
776 if (!priv->multi_packet && f->first_mp) {
777 priv->multi_packet = 1;
778 memcpy(priv->multi_data, packet, sizeof(priv->multi_data));
779 return;
780 }
781
782 priv->multi_packet = 0;
783
784 /*
785 * Sometimes the hardware sends a single packet with z = 0
786 * in the middle of a stream. Real releases generate packets
787 * with x, y, and z all zero, so these seem to be flukes.
788 * Ignore them.
789 */
790 if (f->st.x && f->st.y && !f->pressure)
791 return;
792
793 alps_report_semi_mt_data(psmouse, fingers);
794
795 if ((priv->flags & ALPS_DUALPOINT) &&
796 !(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) {
797 input_report_key(dev2, BTN_LEFT, f->ts_left);
798 input_report_key(dev2, BTN_RIGHT, f->ts_right);
799 input_report_key(dev2, BTN_MIDDLE, f->ts_middle);
800 input_sync(dev2);
801 }
802 }
803
804 static void alps_process_packet_v3(struct psmouse *psmouse)
805 {
806 unsigned char *packet = psmouse->packet;
807
808 /*
809 * v3 protocol packets come in three types, two representing
810 * touchpad data and one representing trackstick data.
811 * Trackstick packets seem to be distinguished by always
812 * having 0x3f in the last byte. This value has never been
813 * observed in the last byte of either of the other types
814 * of packets.
815 */
816 if (packet[5] == 0x3f) {
817 alps_process_trackstick_packet_v3(psmouse);
818 return;
819 }
820
821 alps_process_touchpad_packet_v3_v5(psmouse);
822 }
823
824 static void alps_process_packet_v6(struct psmouse *psmouse)
825 {
826 struct alps_data *priv = psmouse->private;
827 unsigned char *packet = psmouse->packet;
828 struct input_dev *dev = psmouse->dev;
829 struct input_dev *dev2 = priv->dev2;
830 int x, y, z, left, right, middle;
831
832 /*
833 * We can use Byte5 to distinguish if the packet is from Touchpad
834 * or Trackpoint.
835 * Touchpad: 0 - 0x7E
836 * Trackpoint: 0x7F
837 */
838 if (packet[5] == 0x7F) {
839 /* It should be a DualPoint when received Trackpoint packet */
840 if (!(priv->flags & ALPS_DUALPOINT)) {
841 psmouse_warn(psmouse,
842 "Rejected trackstick packet from non DualPoint device");
843 return;
844 }
845
846 /* Trackpoint packet */
847 x = packet[1] | ((packet[3] & 0x20) << 2);
848 y = packet[2] | ((packet[3] & 0x40) << 1);
849 z = packet[4];
850 left = packet[3] & 0x01;
851 right = packet[3] & 0x02;
852 middle = packet[3] & 0x04;
853
854 /* To prevent the cursor jump when finger lifted */
855 if (x == 0x7F && y == 0x7F && z == 0x7F)
856 x = y = z = 0;
857
858 /* Divide 4 since trackpoint's speed is too fast */
859 input_report_rel(dev2, REL_X, (char)x / 4);
860 input_report_rel(dev2, REL_Y, -((char)y / 4));
861
862 input_report_key(dev2, BTN_LEFT, left);
863 input_report_key(dev2, BTN_RIGHT, right);
864 input_report_key(dev2, BTN_MIDDLE, middle);
865
866 input_sync(dev2);
867 return;
868 }
869
870 /* Touchpad packet */
871 x = packet[1] | ((packet[3] & 0x78) << 4);
872 y = packet[2] | ((packet[4] & 0x78) << 4);
873 z = packet[5];
874 left = packet[3] & 0x01;
875 right = packet[3] & 0x02;
876
877 if (z > 30)
878 input_report_key(dev, BTN_TOUCH, 1);
879 if (z < 25)
880 input_report_key(dev, BTN_TOUCH, 0);
881
882 if (z > 0) {
883 input_report_abs(dev, ABS_X, x);
884 input_report_abs(dev, ABS_Y, y);
885 }
886
887 input_report_abs(dev, ABS_PRESSURE, z);
888 input_report_key(dev, BTN_TOOL_FINGER, z > 0);
889
890 /* v6 touchpad does not have middle button */
891 input_report_key(dev, BTN_LEFT, left);
892 input_report_key(dev, BTN_RIGHT, right);
893
894 input_sync(dev);
895 }
896
897 static void alps_process_packet_v4(struct psmouse *psmouse)
898 {
899 struct alps_data *priv = psmouse->private;
900 unsigned char *packet = psmouse->packet;
901 struct alps_fields *f = &priv->f;
902 int offset;
903
904 /*
905 * v4 has a 6-byte encoding for bitmap data, but this data is
906 * broken up between 3 normal packets. Use priv->multi_packet to
907 * track our position in the bitmap packet.
908 */
909 if (packet[6] & 0x40) {
910 /* sync, reset position */
911 priv->multi_packet = 0;
912 }
913
914 if (WARN_ON_ONCE(priv->multi_packet > 2))
915 return;
916
917 offset = 2 * priv->multi_packet;
918 priv->multi_data[offset] = packet[6];
919 priv->multi_data[offset + 1] = packet[7];
920
921 f->left = !!(packet[4] & 0x01);
922 f->right = !!(packet[4] & 0x02);
923
924 f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) |
925 ((packet[0] & 0x30) >> 4);
926 f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f);
927 f->pressure = packet[5] & 0x7f;
928
929 if (++priv->multi_packet > 2) {
930 priv->multi_packet = 0;
931
932 f->x_map = ((priv->multi_data[2] & 0x1f) << 10) |
933 ((priv->multi_data[3] & 0x60) << 3) |
934 ((priv->multi_data[0] & 0x3f) << 2) |
935 ((priv->multi_data[1] & 0x60) >> 5);
936 f->y_map = ((priv->multi_data[5] & 0x01) << 10) |
937 ((priv->multi_data[3] & 0x1f) << 5) |
938 (priv->multi_data[1] & 0x1f);
939
940 f->fingers = alps_process_bitmap(priv, f);
941 }
942
943 alps_report_semi_mt_data(psmouse, f->fingers);
944 }
945
946 static bool alps_is_valid_package_v7(struct psmouse *psmouse)
947 {
948 switch (psmouse->pktcnt) {
949 case 3:
950 return (psmouse->packet[2] & 0x40) == 0x40;
951 case 4:
952 return (psmouse->packet[3] & 0x48) == 0x48;
953 case 6:
954 return (psmouse->packet[5] & 0x40) == 0x00;
955 }
956 return true;
957 }
958
959 static unsigned char alps_get_packet_id_v7(char *byte)
960 {
961 unsigned char packet_id;
962
963 if (byte[4] & 0x40)
964 packet_id = V7_PACKET_ID_TWO;
965 else if (byte[4] & 0x01)
966 packet_id = V7_PACKET_ID_MULTI;
967 else if ((byte[0] & 0x10) && !(byte[4] & 0x43))
968 packet_id = V7_PACKET_ID_NEW;
969 else if (byte[1] == 0x00 && byte[4] == 0x00)
970 packet_id = V7_PACKET_ID_IDLE;
971 else
972 packet_id = V7_PACKET_ID_UNKNOWN;
973
974 return packet_id;
975 }
976
977 static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt,
978 unsigned char *pkt,
979 unsigned char pkt_id)
980 {
981 mt[0].x = ((pkt[2] & 0x80) << 4);
982 mt[0].x |= ((pkt[2] & 0x3F) << 5);
983 mt[0].x |= ((pkt[3] & 0x30) >> 1);
984 mt[0].x |= (pkt[3] & 0x07);
985 mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07);
986
987 mt[1].x = ((pkt[3] & 0x80) << 4);
988 mt[1].x |= ((pkt[4] & 0x80) << 3);
989 mt[1].x |= ((pkt[4] & 0x3F) << 4);
990 mt[1].y = ((pkt[5] & 0x80) << 3);
991 mt[1].y |= ((pkt[5] & 0x3F) << 4);
992
993 switch (pkt_id) {
994 case V7_PACKET_ID_TWO:
995 mt[1].x &= ~0x000F;
996 mt[1].y |= 0x000F;
997 /* Detect false-postive touches where x & y report max value */
998 if (mt[1].y == 0x7ff && mt[1].x == 0xff0) {
999 mt[1].x = 0;
1000 /* y gets set to 0 at the end of this function */
1001 }
1002 break;
1003
1004 case V7_PACKET_ID_MULTI:
1005 mt[1].x &= ~0x003F;
1006 mt[1].y &= ~0x0020;
1007 mt[1].y |= ((pkt[4] & 0x02) << 4);
1008 mt[1].y |= 0x001F;
1009 break;
1010
1011 case V7_PACKET_ID_NEW:
1012 mt[1].x &= ~0x003F;
1013 mt[1].x |= (pkt[0] & 0x20);
1014 mt[1].y |= 0x000F;
1015 break;
1016 }
1017
1018 mt[0].y = 0x7FF - mt[0].y;
1019 mt[1].y = 0x7FF - mt[1].y;
1020 }
1021
1022 static int alps_get_mt_count(struct input_mt_pos *mt)
1023 {
1024 int i, fingers = 0;
1025
1026 for (i = 0; i < MAX_TOUCHES; i++) {
1027 if (mt[i].x != 0 || mt[i].y != 0)
1028 fingers++;
1029 }
1030
1031 return fingers;
1032 }
1033
1034 static int alps_decode_packet_v7(struct alps_fields *f,
1035 unsigned char *p,
1036 struct psmouse *psmouse)
1037 {
1038 struct alps_data *priv = psmouse->private;
1039 unsigned char pkt_id;
1040
1041 pkt_id = alps_get_packet_id_v7(p);
1042 if (pkt_id == V7_PACKET_ID_IDLE)
1043 return 0;
1044 if (pkt_id == V7_PACKET_ID_UNKNOWN)
1045 return -1;
1046 /*
1047 * NEW packets are send to indicate a discontinuity in the finger
1048 * coordinate reporting. Specifically a finger may have moved from
1049 * slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for
1050 * us.
1051 *
1052 * NEW packets have 3 problems:
1053 * 1) They do not contain middle / right button info (on non clickpads)
1054 * this can be worked around by preserving the old button state
1055 * 2) They do not contain an accurate fingercount, and they are
1056 * typically send when the number of fingers changes. We cannot use
1057 * the old finger count as that may mismatch with the amount of
1058 * touch coordinates we've available in the NEW packet
1059 * 3) Their x data for the second touch is inaccurate leading to
1060 * a possible jump of the x coordinate by 16 units when the first
1061 * non NEW packet comes in
1062 * Since problems 2 & 3 cannot be worked around, just ignore them.
1063 */
1064 if (pkt_id == V7_PACKET_ID_NEW)
1065 return 1;
1066
1067 alps_get_finger_coordinate_v7(f->mt, p, pkt_id);
1068
1069 if (pkt_id == V7_PACKET_ID_TWO)
1070 f->fingers = alps_get_mt_count(f->mt);
1071 else /* pkt_id == V7_PACKET_ID_MULTI */
1072 f->fingers = 3 + (p[5] & 0x03);
1073
1074 f->left = (p[0] & 0x80) >> 7;
1075 if (priv->flags & ALPS_BUTTONPAD) {
1076 if (p[0] & 0x20)
1077 f->fingers++;
1078 if (p[0] & 0x10)
1079 f->fingers++;
1080 } else {
1081 f->right = (p[0] & 0x20) >> 5;
1082 f->middle = (p[0] & 0x10) >> 4;
1083 }
1084
1085 /* Sometimes a single touch is reported in mt[1] rather then mt[0] */
1086 if (f->fingers == 1 && f->mt[0].x == 0 && f->mt[0].y == 0) {
1087 f->mt[0].x = f->mt[1].x;
1088 f->mt[0].y = f->mt[1].y;
1089 f->mt[1].x = 0;
1090 f->mt[1].y = 0;
1091 }
1092
1093 return 0;
1094 }
1095
1096 static void alps_process_trackstick_packet_v7(struct psmouse *psmouse)
1097 {
1098 struct alps_data *priv = psmouse->private;
1099 unsigned char *packet = psmouse->packet;
1100 struct input_dev *dev2 = priv->dev2;
1101 int x, y, z, left, right, middle;
1102
1103 /* It should be a DualPoint when received trackstick packet */
1104 if (!(priv->flags & ALPS_DUALPOINT)) {
1105 psmouse_warn(psmouse,
1106 "Rejected trackstick packet from non DualPoint device");
1107 return;
1108 }
1109
1110 x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2);
1111 y = (packet[3] & 0x07) | (packet[4] & 0xb8) |
1112 ((packet[3] & 0x20) << 1);
1113 z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1);
1114
1115 left = (packet[1] & 0x01);
1116 right = (packet[1] & 0x02) >> 1;
1117 middle = (packet[1] & 0x04) >> 2;
1118
1119 input_report_rel(dev2, REL_X, (char)x);
1120 input_report_rel(dev2, REL_Y, -((char)y));
1121
1122 input_report_key(dev2, BTN_LEFT, left);
1123 input_report_key(dev2, BTN_RIGHT, right);
1124 input_report_key(dev2, BTN_MIDDLE, middle);
1125
1126 input_sync(dev2);
1127 }
1128
1129 static void alps_process_touchpad_packet_v7(struct psmouse *psmouse)
1130 {
1131 struct alps_data *priv = psmouse->private;
1132 struct input_dev *dev = psmouse->dev;
1133 struct alps_fields *f = &priv->f;
1134
1135 memset(f, 0, sizeof(*f));
1136
1137 if (priv->decode_fields(f, psmouse->packet, psmouse))
1138 return;
1139
1140 alps_report_mt_data(psmouse, alps_get_mt_count(f->mt));
1141
1142 input_mt_report_finger_count(dev, f->fingers);
1143
1144 input_report_key(dev, BTN_LEFT, f->left);
1145 input_report_key(dev, BTN_RIGHT, f->right);
1146 input_report_key(dev, BTN_MIDDLE, f->middle);
1147
1148 input_sync(dev);
1149 }
1150
1151 static void alps_process_packet_v7(struct psmouse *psmouse)
1152 {
1153 unsigned char *packet = psmouse->packet;
1154
1155 if (packet[0] == 0x48 && (packet[4] & 0x47) == 0x06)
1156 alps_process_trackstick_packet_v7(psmouse);
1157 else
1158 alps_process_touchpad_packet_v7(psmouse);
1159 }
1160
1161 static enum SS4_PACKET_ID alps_get_pkt_id_ss4_v2(unsigned char *byte)
1162 {
1163 enum SS4_PACKET_ID pkt_id = SS4_PACKET_ID_IDLE;
1164
1165 switch (byte[3] & 0x30) {
1166 case 0x00:
1167 if (SS4_IS_IDLE_V2(byte)) {
1168 pkt_id = SS4_PACKET_ID_IDLE;
1169 } else {
1170 pkt_id = SS4_PACKET_ID_ONE;
1171 }
1172 break;
1173 case 0x10:
1174 /* two-finger finger positions */
1175 pkt_id = SS4_PACKET_ID_TWO;
1176 break;
1177 case 0x20:
1178 /* stick pointer */
1179 pkt_id = SS4_PACKET_ID_STICK;
1180 break;
1181 case 0x30:
1182 /* third and fourth finger positions */
1183 pkt_id = SS4_PACKET_ID_MULTI;
1184 break;
1185 }
1186
1187 return pkt_id;
1188 }
1189
1190 static int alps_decode_ss4_v2(struct alps_fields *f,
1191 unsigned char *p, struct psmouse *psmouse)
1192 {
1193 struct alps_data *priv = psmouse->private;
1194 enum SS4_PACKET_ID pkt_id;
1195 unsigned int no_data_x, no_data_y;
1196
1197 pkt_id = alps_get_pkt_id_ss4_v2(p);
1198
1199 /* Current packet is 1Finger coordinate packet */
1200 switch (pkt_id) {
1201 case SS4_PACKET_ID_ONE:
1202 f->mt[0].x = SS4_1F_X_V2(p);
1203 f->mt[0].y = SS4_1F_Y_V2(p);
1204 f->pressure = ((SS4_1F_Z_V2(p)) * 2) & 0x7f;
1205 /*
1206 * When a button is held the device will give us events
1207 * with x, y, and pressure of 0. This causes annoying jumps
1208 * if a touch is released while the button is held.
1209 * Handle this by claiming zero contacts.
1210 */
1211 f->fingers = f->pressure > 0 ? 1 : 0;
1212 f->first_mp = 0;
1213 f->is_mp = 0;
1214 break;
1215
1216 case SS4_PACKET_ID_TWO:
1217 if (priv->flags & ALPS_BUTTONPAD) {
1218 if (IS_SS4PLUS_DEV(priv->dev_id)) {
1219 f->mt[0].x = SS4_PLUS_BTL_MF_X_V2(p, 0);
1220 f->mt[1].x = SS4_PLUS_BTL_MF_X_V2(p, 1);
1221 } else {
1222 f->mt[0].x = SS4_BTL_MF_X_V2(p, 0);
1223 f->mt[1].x = SS4_BTL_MF_X_V2(p, 1);
1224 }
1225 f->mt[0].y = SS4_BTL_MF_Y_V2(p, 0);
1226 f->mt[1].y = SS4_BTL_MF_Y_V2(p, 1);
1227 } else {
1228 if (IS_SS4PLUS_DEV(priv->dev_id)) {
1229 f->mt[0].x = SS4_PLUS_STD_MF_X_V2(p, 0);
1230 f->mt[1].x = SS4_PLUS_STD_MF_X_V2(p, 1);
1231 } else {
1232 f->mt[0].x = SS4_STD_MF_X_V2(p, 0);
1233 f->mt[1].x = SS4_STD_MF_X_V2(p, 1);
1234 }
1235 f->mt[0].y = SS4_STD_MF_Y_V2(p, 0);
1236 f->mt[1].y = SS4_STD_MF_Y_V2(p, 1);
1237 }
1238 f->pressure = SS4_MF_Z_V2(p, 0) ? 0x30 : 0;
1239
1240 if (SS4_IS_MF_CONTINUE(p)) {
1241 f->first_mp = 1;
1242 } else {
1243 f->fingers = 2;
1244 f->first_mp = 0;
1245 }
1246 f->is_mp = 0;
1247
1248 break;
1249
1250 case SS4_PACKET_ID_MULTI:
1251 if (priv->flags & ALPS_BUTTONPAD) {
1252 if (IS_SS4PLUS_DEV(priv->dev_id)) {
1253 f->mt[2].x = SS4_PLUS_BTL_MF_X_V2(p, 0);
1254 f->mt[3].x = SS4_PLUS_BTL_MF_X_V2(p, 1);
1255 no_data_x = SS4_PLUS_MFPACKET_NO_AX_BL;
1256 } else {
1257 f->mt[2].x = SS4_BTL_MF_X_V2(p, 0);
1258 f->mt[3].x = SS4_BTL_MF_X_V2(p, 1);
1259 no_data_x = SS4_MFPACKET_NO_AX_BL;
1260 }
1261 no_data_y = SS4_MFPACKET_NO_AY_BL;
1262
1263 f->mt[2].y = SS4_BTL_MF_Y_V2(p, 0);
1264 f->mt[3].y = SS4_BTL_MF_Y_V2(p, 1);
1265 } else {
1266 if (IS_SS4PLUS_DEV(priv->dev_id)) {
1267 f->mt[2].x = SS4_PLUS_STD_MF_X_V2(p, 0);
1268 f->mt[3].x = SS4_PLUS_STD_MF_X_V2(p, 1);
1269 no_data_x = SS4_PLUS_MFPACKET_NO_AX;
1270 } else {
1271 f->mt[2].x = SS4_STD_MF_X_V2(p, 0);
1272 f->mt[3].x = SS4_STD_MF_X_V2(p, 1);
1273 no_data_x = SS4_MFPACKET_NO_AX;
1274 }
1275 no_data_y = SS4_MFPACKET_NO_AY;
1276
1277 f->mt[2].y = SS4_STD_MF_Y_V2(p, 0);
1278 f->mt[3].y = SS4_STD_MF_Y_V2(p, 1);
1279 }
1280
1281 f->first_mp = 0;
1282 f->is_mp = 1;
1283
1284 if (SS4_IS_5F_DETECTED(p)) {
1285 f->fingers = 5;
1286 } else if (f->mt[3].x == no_data_x &&
1287 f->mt[3].y == no_data_y) {
1288 f->mt[3].x = 0;
1289 f->mt[3].y = 0;
1290 f->fingers = 3;
1291 } else {
1292 f->fingers = 4;
1293 }
1294 break;
1295
1296 case SS4_PACKET_ID_STICK:
1297 /*
1298 * x, y, and pressure are decoded in
1299 * alps_process_packet_ss4_v2()
1300 */
1301 f->first_mp = 0;
1302 f->is_mp = 0;
1303 break;
1304
1305 case SS4_PACKET_ID_IDLE:
1306 default:
1307 memset(f, 0, sizeof(struct alps_fields));
1308 break;
1309 }
1310
1311 /* handle buttons */
1312 if (pkt_id == SS4_PACKET_ID_STICK) {
1313 f->ts_left = !!(SS4_BTN_V2(p) & 0x01);
1314 f->ts_right = !!(SS4_BTN_V2(p) & 0x02);
1315 f->ts_middle = !!(SS4_BTN_V2(p) & 0x04);
1316 } else {
1317 f->left = !!(SS4_BTN_V2(p) & 0x01);
1318 if (!(priv->flags & ALPS_BUTTONPAD)) {
1319 f->right = !!(SS4_BTN_V2(p) & 0x02);
1320 f->middle = !!(SS4_BTN_V2(p) & 0x04);
1321 }
1322 }
1323
1324 return 0;
1325 }
1326
1327 static void alps_process_packet_ss4_v2(struct psmouse *psmouse)
1328 {
1329 struct alps_data *priv = psmouse->private;
1330 unsigned char *packet = psmouse->packet;
1331 struct input_dev *dev = psmouse->dev;
1332 struct input_dev *dev2 = priv->dev2;
1333 struct alps_fields *f = &priv->f;
1334
1335 memset(f, 0, sizeof(struct alps_fields));
1336 priv->decode_fields(f, packet, psmouse);
1337 if (priv->multi_packet) {
1338 /*
1339 * Sometimes the first packet will indicate a multi-packet
1340 * sequence, but sometimes the next multi-packet would not
1341 * come. Check for this, and when it happens process the
1342 * position packet as usual.
1343 */
1344 if (f->is_mp) {
1345 /* Now process the 1st packet */
1346 priv->decode_fields(f, priv->multi_data, psmouse);
1347 } else {
1348 priv->multi_packet = 0;
1349 }
1350 }
1351
1352 /*
1353 * "f.is_mp" would always be '0' after merging the 1st and 2nd packet.
1354 * When it is set, it means 2nd packet comes without 1st packet come.
1355 */
1356 if (f->is_mp)
1357 return;
1358
1359 /* Save the first packet */
1360 if (!priv->multi_packet && f->first_mp) {
1361 priv->multi_packet = 1;
1362 memcpy(priv->multi_data, packet, sizeof(priv->multi_data));
1363 return;
1364 }
1365
1366 priv->multi_packet = 0;
1367
1368 /* Report trackstick */
1369 if (alps_get_pkt_id_ss4_v2(packet) == SS4_PACKET_ID_STICK) {
1370 if (!(priv->flags & ALPS_DUALPOINT)) {
1371 psmouse_warn(psmouse,
1372 "Rejected trackstick packet from non DualPoint device");
1373 return;
1374 }
1375
1376 input_report_rel(dev2, REL_X, SS4_TS_X_V2(packet));
1377 input_report_rel(dev2, REL_Y, SS4_TS_Y_V2(packet));
1378 input_report_abs(dev2, ABS_PRESSURE, SS4_TS_Z_V2(packet));
1379
1380 input_report_key(dev2, BTN_LEFT, f->ts_left);
1381 input_report_key(dev2, BTN_RIGHT, f->ts_right);
1382 input_report_key(dev2, BTN_MIDDLE, f->ts_middle);
1383
1384 input_sync(dev2);
1385 return;
1386 }
1387
1388 /* Report touchpad */
1389 alps_report_mt_data(psmouse, (f->fingers <= 4) ? f->fingers : 4);
1390
1391 input_mt_report_finger_count(dev, f->fingers);
1392
1393 input_report_key(dev, BTN_LEFT, f->left);
1394 input_report_key(dev, BTN_RIGHT, f->right);
1395 input_report_key(dev, BTN_MIDDLE, f->middle);
1396
1397 input_report_abs(dev, ABS_PRESSURE, f->pressure);
1398 input_sync(dev);
1399 }
1400
1401 static bool alps_is_valid_package_ss4_v2(struct psmouse *psmouse)
1402 {
1403 if (psmouse->pktcnt == 4 && ((psmouse->packet[3] & 0x08) != 0x08))
1404 return false;
1405 if (psmouse->pktcnt == 6 && ((psmouse->packet[5] & 0x10) != 0x0))
1406 return false;
1407 return true;
1408 }
1409
1410 static DEFINE_MUTEX(alps_mutex);
1411
1412 static void alps_register_bare_ps2_mouse(struct work_struct *work)
1413 {
1414 struct alps_data *priv =
1415 container_of(work, struct alps_data, dev3_register_work.work);
1416 struct psmouse *psmouse = priv->psmouse;
1417 struct input_dev *dev3;
1418 int error = 0;
1419
1420 mutex_lock(&alps_mutex);
1421
1422 if (priv->dev3)
1423 goto out;
1424
1425 dev3 = input_allocate_device();
1426 if (!dev3) {
1427 psmouse_err(psmouse, "failed to allocate secondary device\n");
1428 error = -ENOMEM;
1429 goto out;
1430 }
1431
1432 snprintf(priv->phys3, sizeof(priv->phys3), "%s/%s",
1433 psmouse->ps2dev.serio->phys,
1434 (priv->dev2 ? "input2" : "input1"));
1435 dev3->phys = priv->phys3;
1436
1437 /*
1438 * format of input device name is: "protocol vendor name"
1439 * see function psmouse_switch_protocol() in psmouse-base.c
1440 */
1441 dev3->name = "PS/2 ALPS Mouse";
1442
1443 dev3->id.bustype = BUS_I8042;
1444 dev3->id.vendor = 0x0002;
1445 dev3->id.product = PSMOUSE_PS2;
1446 dev3->id.version = 0x0000;
1447 dev3->dev.parent = &psmouse->ps2dev.serio->dev;
1448
1449 input_set_capability(dev3, EV_REL, REL_X);
1450 input_set_capability(dev3, EV_REL, REL_Y);
1451 input_set_capability(dev3, EV_KEY, BTN_LEFT);
1452 input_set_capability(dev3, EV_KEY, BTN_RIGHT);
1453 input_set_capability(dev3, EV_KEY, BTN_MIDDLE);
1454
1455 __set_bit(INPUT_PROP_POINTER, dev3->propbit);
1456
1457 error = input_register_device(dev3);
1458 if (error) {
1459 psmouse_err(psmouse,
1460 "failed to register secondary device: %d\n",
1461 error);
1462 input_free_device(dev3);
1463 goto out;
1464 }
1465
1466 priv->dev3 = dev3;
1467
1468 out:
1469 /*
1470 * Save the error code so that we can detect that we
1471 * already tried to create the device.
1472 */
1473 if (error)
1474 priv->dev3 = ERR_PTR(error);
1475
1476 mutex_unlock(&alps_mutex);
1477 }
1478
1479 static void alps_report_bare_ps2_packet(struct psmouse *psmouse,
1480 unsigned char packet[],
1481 bool report_buttons)
1482 {
1483 struct alps_data *priv = psmouse->private;
1484 struct input_dev *dev, *dev2 = NULL;
1485
1486 /* Figure out which device to use to report the bare packet */
1487 if (priv->proto_version == ALPS_PROTO_V2 &&
1488 (priv->flags & ALPS_DUALPOINT)) {
1489 /* On V2 devices the DualPoint Stick reports bare packets */
1490 dev = priv->dev2;
1491 dev2 = psmouse->dev;
1492 } else if (unlikely(IS_ERR_OR_NULL(priv->dev3))) {
1493 /* Register dev3 mouse if we received PS/2 packet first time */
1494 if (!IS_ERR(priv->dev3))
1495 psmouse_queue_work(psmouse, &priv->dev3_register_work,
1496 0);
1497 return;
1498 } else {
1499 dev = priv->dev3;
1500 }
1501
1502 if (report_buttons)
1503 alps_report_buttons(dev, dev2,
1504 packet[0] & 1, packet[0] & 2, packet[0] & 4);
1505
1506 input_report_rel(dev, REL_X,
1507 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0);
1508 input_report_rel(dev, REL_Y,
1509 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0);
1510
1511 input_sync(dev);
1512 }
1513
1514 static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse)
1515 {
1516 struct alps_data *priv = psmouse->private;
1517
1518 if (psmouse->pktcnt < 6)
1519 return PSMOUSE_GOOD_DATA;
1520
1521 if (psmouse->pktcnt == 6) {
1522 /*
1523 * Start a timer to flush the packet if it ends up last
1524 * 6-byte packet in the stream. Timer needs to fire
1525 * psmouse core times out itself. 20 ms should be enough
1526 * to decide if we are getting more data or not.
1527 */
1528 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20));
1529 return PSMOUSE_GOOD_DATA;
1530 }
1531
1532 del_timer(&priv->timer);
1533
1534 if (psmouse->packet[6] & 0x80) {
1535
1536 /*
1537 * Highest bit is set - that means we either had
1538 * complete ALPS packet and this is start of the
1539 * next packet or we got garbage.
1540 */
1541
1542 if (((psmouse->packet[3] |
1543 psmouse->packet[4] |
1544 psmouse->packet[5]) & 0x80) ||
1545 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) {
1546 psmouse_dbg(psmouse,
1547 "refusing packet %4ph (suspected interleaved ps/2)\n",
1548 psmouse->packet + 3);
1549 return PSMOUSE_BAD_DATA;
1550 }
1551
1552 priv->process_packet(psmouse);
1553
1554 /* Continue with the next packet */
1555 psmouse->packet[0] = psmouse->packet[6];
1556 psmouse->pktcnt = 1;
1557
1558 } else {
1559
1560 /*
1561 * High bit is 0 - that means that we indeed got a PS/2
1562 * packet in the middle of ALPS packet.
1563 *
1564 * There is also possibility that we got 6-byte ALPS
1565 * packet followed by 3-byte packet from trackpoint. We
1566 * can not distinguish between these 2 scenarios but
1567 * because the latter is unlikely to happen in course of
1568 * normal operation (user would need to press all
1569 * buttons on the pad and start moving trackpoint
1570 * without touching the pad surface) we assume former.
1571 * Even if we are wrong the wost thing that would happen
1572 * the cursor would jump but we should not get protocol
1573 * de-synchronization.
1574 */
1575
1576 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3],
1577 false);
1578
1579 /*
1580 * Continue with the standard ALPS protocol handling,
1581 * but make sure we won't process it as an interleaved
1582 * packet again, which may happen if all buttons are
1583 * pressed. To avoid this let's reset the 4th bit which
1584 * is normally 1.
1585 */
1586 psmouse->packet[3] = psmouse->packet[6] & 0xf7;
1587 psmouse->pktcnt = 4;
1588 }
1589
1590 return PSMOUSE_GOOD_DATA;
1591 }
1592
1593 static void alps_flush_packet(struct timer_list *t)
1594 {
1595 struct alps_data *priv = from_timer(priv, t, timer);
1596 struct psmouse *psmouse = priv->psmouse;
1597
1598 serio_pause_rx(psmouse->ps2dev.serio);
1599
1600 if (psmouse->pktcnt == psmouse->pktsize) {
1601
1602 /*
1603 * We did not any more data in reasonable amount of time.
1604 * Validate the last 3 bytes and process as a standard
1605 * ALPS packet.
1606 */
1607 if ((psmouse->packet[3] |
1608 psmouse->packet[4] |
1609 psmouse->packet[5]) & 0x80) {
1610 psmouse_dbg(psmouse,
1611 "refusing packet %3ph (suspected interleaved ps/2)\n",
1612 psmouse->packet + 3);
1613 } else {
1614 priv->process_packet(psmouse);
1615 }
1616 psmouse->pktcnt = 0;
1617 }
1618
1619 serio_continue_rx(psmouse->ps2dev.serio);
1620 }
1621
1622 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
1623 {
1624 struct alps_data *priv = psmouse->private;
1625
1626 /*
1627 * Check if we are dealing with a bare PS/2 packet, presumably from
1628 * a device connected to the external PS/2 port. Because bare PS/2
1629 * protocol does not have enough constant bits to self-synchronize
1630 * properly we only do this if the device is fully synchronized.
1631 * Can not distinguish V8's first byte from PS/2 packet's
1632 */
1633 if (priv->proto_version != ALPS_PROTO_V8 &&
1634 !psmouse->out_of_sync_cnt &&
1635 (psmouse->packet[0] & 0xc8) == 0x08) {
1636
1637 if (psmouse->pktcnt == 3) {
1638 alps_report_bare_ps2_packet(psmouse, psmouse->packet,
1639 true);
1640 return PSMOUSE_FULL_PACKET;
1641 }
1642 return PSMOUSE_GOOD_DATA;
1643 }
1644
1645 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */
1646
1647 if ((priv->flags & ALPS_PS2_INTERLEAVED) &&
1648 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) {
1649 return alps_handle_interleaved_ps2(psmouse);
1650 }
1651
1652 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) {
1653 psmouse_dbg(psmouse,
1654 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n",
1655 psmouse->packet[0], priv->mask0, priv->byte0);
1656 return PSMOUSE_BAD_DATA;
1657 }
1658
1659 /* Bytes 2 - pktsize should have 0 in the highest bit */
1660 if (priv->proto_version < ALPS_PROTO_V5 &&
1661 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize &&
1662 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) {
1663 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
1664 psmouse->pktcnt - 1,
1665 psmouse->packet[psmouse->pktcnt - 1]);
1666
1667 if (priv->proto_version == ALPS_PROTO_V3_RUSHMORE &&
1668 psmouse->pktcnt == psmouse->pktsize) {
1669 /*
1670 * Some Dell boxes, such as Latitude E6440 or E7440
1671 * with closed lid, quite often smash last byte of
1672 * otherwise valid packet with 0xff. Given that the
1673 * next packet is very likely to be valid let's
1674 * report PSMOUSE_FULL_PACKET but not process data,
1675 * rather than reporting PSMOUSE_BAD_DATA and
1676 * filling the logs.
1677 */
1678 return PSMOUSE_FULL_PACKET;
1679 }
1680
1681 return PSMOUSE_BAD_DATA;
1682 }
1683
1684 if ((priv->proto_version == ALPS_PROTO_V7 &&
1685 !alps_is_valid_package_v7(psmouse)) ||
1686 (priv->proto_version == ALPS_PROTO_V8 &&
1687 !alps_is_valid_package_ss4_v2(psmouse))) {
1688 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
1689 psmouse->pktcnt - 1,
1690 psmouse->packet[psmouse->pktcnt - 1]);
1691 return PSMOUSE_BAD_DATA;
1692 }
1693
1694 if (psmouse->pktcnt == psmouse->pktsize) {
1695 priv->process_packet(psmouse);
1696 return PSMOUSE_FULL_PACKET;
1697 }
1698
1699 return PSMOUSE_GOOD_DATA;
1700 }
1701
1702 static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble)
1703 {
1704 struct ps2dev *ps2dev = &psmouse->ps2dev;
1705 struct alps_data *priv = psmouse->private;
1706 int command;
1707 unsigned char *param;
1708 unsigned char dummy[4];
1709
1710 BUG_ON(nibble > 0xf);
1711
1712 command = priv->nibble_commands[nibble].command;
1713 param = (command & 0x0f00) ?
1714 dummy : (unsigned char *)&priv->nibble_commands[nibble].data;
1715
1716 if (ps2_command(ps2dev, param, command))
1717 return -1;
1718
1719 return 0;
1720 }
1721
1722 static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr)
1723 {
1724 struct ps2dev *ps2dev = &psmouse->ps2dev;
1725 struct alps_data *priv = psmouse->private;
1726 int i, nibble;
1727
1728 if (ps2_command(ps2dev, NULL, priv->addr_command))
1729 return -1;
1730
1731 for (i = 12; i >= 0; i -= 4) {
1732 nibble = (addr >> i) & 0xf;
1733 if (alps_command_mode_send_nibble(psmouse, nibble))
1734 return -1;
1735 }
1736
1737 return 0;
1738 }
1739
1740 static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
1741 {
1742 struct ps2dev *ps2dev = &psmouse->ps2dev;
1743 unsigned char param[4];
1744
1745 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1746 return -1;
1747
1748 /*
1749 * The address being read is returned in the first two bytes
1750 * of the result. Check that this address matches the expected
1751 * address.
1752 */
1753 if (addr != ((param[0] << 8) | param[1]))
1754 return -1;
1755
1756 return param[2];
1757 }
1758
1759 static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
1760 {
1761 if (alps_command_mode_set_addr(psmouse, addr))
1762 return -1;
1763 return __alps_command_mode_read_reg(psmouse, addr);
1764 }
1765
1766 static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value)
1767 {
1768 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf))
1769 return -1;
1770 if (alps_command_mode_send_nibble(psmouse, value & 0xf))
1771 return -1;
1772 return 0;
1773 }
1774
1775 static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr,
1776 u8 value)
1777 {
1778 if (alps_command_mode_set_addr(psmouse, addr))
1779 return -1;
1780 return __alps_command_mode_write_reg(psmouse, value);
1781 }
1782
1783 static int alps_rpt_cmd(struct psmouse *psmouse, int init_command,
1784 int repeated_command, unsigned char *param)
1785 {
1786 struct ps2dev *ps2dev = &psmouse->ps2dev;
1787
1788 param[0] = 0;
1789 if (init_command && ps2_command(ps2dev, param, init_command))
1790 return -EIO;
1791
1792 if (ps2_command(ps2dev, NULL, repeated_command) ||
1793 ps2_command(ps2dev, NULL, repeated_command) ||
1794 ps2_command(ps2dev, NULL, repeated_command))
1795 return -EIO;
1796
1797 param[0] = param[1] = param[2] = 0xff;
1798 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1799 return -EIO;
1800
1801 psmouse_dbg(psmouse, "%2.2X report: %3ph\n",
1802 repeated_command, param);
1803 return 0;
1804 }
1805
1806 static bool alps_check_valid_firmware_id(unsigned char id[])
1807 {
1808 if (id[0] == 0x73)
1809 return true;
1810
1811 if (id[0] == 0x88 &&
1812 (id[1] == 0x07 ||
1813 id[1] == 0x08 ||
1814 (id[1] & 0xf0) == 0xb0 ||
1815 (id[1] & 0xf0) == 0xc0)) {
1816 return true;
1817 }
1818
1819 return false;
1820 }
1821
1822 static int alps_enter_command_mode(struct psmouse *psmouse)
1823 {
1824 unsigned char param[4];
1825
1826 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) {
1827 psmouse_err(psmouse, "failed to enter command mode\n");
1828 return -1;
1829 }
1830
1831 if (!alps_check_valid_firmware_id(param)) {
1832 psmouse_dbg(psmouse,
1833 "unknown response while entering command mode\n");
1834 return -1;
1835 }
1836 return 0;
1837 }
1838
1839 static inline int alps_exit_command_mode(struct psmouse *psmouse)
1840 {
1841 struct ps2dev *ps2dev = &psmouse->ps2dev;
1842 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM))
1843 return -1;
1844 return 0;
1845 }
1846
1847 /*
1848 * For DualPoint devices select the device that should respond to
1849 * subsequent commands. It looks like glidepad is behind stickpointer,
1850 * I'd thought it would be other way around...
1851 */
1852 static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable)
1853 {
1854 struct ps2dev *ps2dev = &psmouse->ps2dev;
1855 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11;
1856
1857 if (ps2_command(ps2dev, NULL, cmd) ||
1858 ps2_command(ps2dev, NULL, cmd) ||
1859 ps2_command(ps2dev, NULL, cmd) ||
1860 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1861 return -1;
1862
1863 /* we may get 3 more bytes, just ignore them */
1864 ps2_drain(ps2dev, 3, 100);
1865
1866 return 0;
1867 }
1868
1869 static int alps_absolute_mode_v1_v2(struct psmouse *psmouse)
1870 {
1871 struct ps2dev *ps2dev = &psmouse->ps2dev;
1872
1873 /* Try ALPS magic knock - 4 disable before enable */
1874 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1875 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1876 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1877 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1878 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE))
1879 return -1;
1880
1881 /*
1882 * Switch mouse to poll (remote) mode so motion data will not
1883 * get in our way
1884 */
1885 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL);
1886 }
1887
1888 static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word)
1889 {
1890 int i, nibble;
1891
1892 /*
1893 * b0-b11 are valid bits, send sequence is inverse.
1894 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1
1895 */
1896 for (i = 0; i <= 8; i += 4) {
1897 nibble = (word >> i) & 0xf;
1898 if (alps_command_mode_send_nibble(psmouse, nibble))
1899 return -1;
1900 }
1901
1902 return 0;
1903 }
1904
1905 static int alps_monitor_mode_write_reg(struct psmouse *psmouse,
1906 u16 addr, u16 value)
1907 {
1908 struct ps2dev *ps2dev = &psmouse->ps2dev;
1909
1910 /* 0x0A0 is the command to write the word */
1911 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) ||
1912 alps_monitor_mode_send_word(psmouse, 0x0A0) ||
1913 alps_monitor_mode_send_word(psmouse, addr) ||
1914 alps_monitor_mode_send_word(psmouse, value) ||
1915 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1916 return -1;
1917
1918 return 0;
1919 }
1920
1921 static int alps_monitor_mode(struct psmouse *psmouse, bool enable)
1922 {
1923 struct ps2dev *ps2dev = &psmouse->ps2dev;
1924
1925 if (enable) {
1926 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */
1927 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
1928 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) ||
1929 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1930 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1931 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
1932 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1933 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
1934 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO))
1935 return -1;
1936 } else {
1937 /* EC to exit monitor mode */
1938 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP))
1939 return -1;
1940 }
1941
1942 return 0;
1943 }
1944
1945 static int alps_absolute_mode_v6(struct psmouse *psmouse)
1946 {
1947 u16 reg_val = 0x181;
1948 int ret = -1;
1949
1950 /* enter monitor mode, to write the register */
1951 if (alps_monitor_mode(psmouse, true))
1952 return -1;
1953
1954 ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val);
1955
1956 if (alps_monitor_mode(psmouse, false))
1957 ret = -1;
1958
1959 return ret;
1960 }
1961
1962 static int alps_get_status(struct psmouse *psmouse, char *param)
1963 {
1964 /* Get status: 0xF5 0xF5 0xF5 0xE9 */
1965 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param))
1966 return -1;
1967
1968 return 0;
1969 }
1970
1971 /*
1972 * Turn touchpad tapping on or off. The sequences are:
1973 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable,
1974 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable.
1975 * My guess that 0xE9 (GetInfo) is here as a sync point.
1976 * For models that also have stickpointer (DualPoints) its tapping
1977 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but
1978 * we don't fiddle with it.
1979 */
1980 static int alps_tap_mode(struct psmouse *psmouse, int enable)
1981 {
1982 struct ps2dev *ps2dev = &psmouse->ps2dev;
1983 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES;
1984 unsigned char tap_arg = enable ? 0x0A : 0x00;
1985 unsigned char param[4];
1986
1987 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) ||
1988 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1989 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1990 ps2_command(ps2dev, &tap_arg, cmd))
1991 return -1;
1992
1993 if (alps_get_status(psmouse, param))
1994 return -1;
1995
1996 return 0;
1997 }
1998
1999 /*
2000 * alps_poll() - poll the touchpad for current motion packet.
2001 * Used in resync.
2002 */
2003 static int alps_poll(struct psmouse *psmouse)
2004 {
2005 struct alps_data *priv = psmouse->private;
2006 unsigned char buf[sizeof(psmouse->packet)];
2007 bool poll_failed;
2008
2009 if (priv->flags & ALPS_PASS)
2010 alps_passthrough_mode_v2(psmouse, true);
2011
2012 poll_failed = ps2_command(&psmouse->ps2dev, buf,
2013 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0;
2014
2015 if (priv->flags & ALPS_PASS)
2016 alps_passthrough_mode_v2(psmouse, false);
2017
2018 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0)
2019 return -1;
2020
2021 if ((psmouse->badbyte & 0xc8) == 0x08) {
2022 /*
2023 * Poll the track stick ...
2024 */
2025 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8)))
2026 return -1;
2027 }
2028
2029 memcpy(psmouse->packet, buf, sizeof(buf));
2030 return 0;
2031 }
2032
2033 static int alps_hw_init_v1_v2(struct psmouse *psmouse)
2034 {
2035 struct alps_data *priv = psmouse->private;
2036
2037 if ((priv->flags & ALPS_PASS) &&
2038 alps_passthrough_mode_v2(psmouse, true)) {
2039 return -1;
2040 }
2041
2042 if (alps_tap_mode(psmouse, true)) {
2043 psmouse_warn(psmouse, "Failed to enable hardware tapping\n");
2044 return -1;
2045 }
2046
2047 if (alps_absolute_mode_v1_v2(psmouse)) {
2048 psmouse_err(psmouse, "Failed to enable absolute mode\n");
2049 return -1;
2050 }
2051
2052 if ((priv->flags & ALPS_PASS) &&
2053 alps_passthrough_mode_v2(psmouse, false)) {
2054 return -1;
2055 }
2056
2057 /* ALPS needs stream mode, otherwise it won't report any data */
2058 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) {
2059 psmouse_err(psmouse, "Failed to enable stream mode\n");
2060 return -1;
2061 }
2062
2063 return 0;
2064 }
2065
2066 static int alps_hw_init_v6(struct psmouse *psmouse)
2067 {
2068 unsigned char param[2] = {0xC8, 0x14};
2069
2070 /* Enter passthrough mode to let trackpoint enter 6byte raw mode */
2071 if (alps_passthrough_mode_v2(psmouse, true))
2072 return -1;
2073
2074 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
2075 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
2076 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
2077 ps2_command(&psmouse->ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
2078 ps2_command(&psmouse->ps2dev, &param[1], PSMOUSE_CMD_SETRATE))
2079 return -1;
2080
2081 if (alps_passthrough_mode_v2(psmouse, false))
2082 return -1;
2083
2084 if (alps_absolute_mode_v6(psmouse)) {
2085 psmouse_err(psmouse, "Failed to enable absolute mode\n");
2086 return -1;
2087 }
2088
2089 return 0;
2090 }
2091
2092 /*
2093 * Enable or disable passthrough mode to the trackstick.
2094 */
2095 static int alps_passthrough_mode_v3(struct psmouse *psmouse,
2096 int reg_base, bool enable)
2097 {
2098 int reg_val, ret = -1;
2099
2100 if (alps_enter_command_mode(psmouse))
2101 return -1;
2102
2103 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008);
2104 if (reg_val == -1)
2105 goto error;
2106
2107 if (enable)
2108 reg_val |= 0x01;
2109 else
2110 reg_val &= ~0x01;
2111
2112 ret = __alps_command_mode_write_reg(psmouse, reg_val);
2113
2114 error:
2115 if (alps_exit_command_mode(psmouse))
2116 ret = -1;
2117 return ret;
2118 }
2119
2120 /* Must be in command mode when calling this function */
2121 static int alps_absolute_mode_v3(struct psmouse *psmouse)
2122 {
2123 int reg_val;
2124
2125 reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
2126 if (reg_val == -1)
2127 return -1;
2128
2129 reg_val |= 0x06;
2130 if (__alps_command_mode_write_reg(psmouse, reg_val))
2131 return -1;
2132
2133 return 0;
2134 }
2135
2136 static int alps_probe_trackstick_v3_v7(struct psmouse *psmouse, int reg_base)
2137 {
2138 int ret = -EIO, reg_val;
2139
2140 if (alps_enter_command_mode(psmouse))
2141 goto error;
2142
2143 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08);
2144 if (reg_val == -1)
2145 goto error;
2146
2147 /* bit 7: trackstick is present */
2148 ret = reg_val & 0x80 ? 0 : -ENODEV;
2149
2150 error:
2151 alps_exit_command_mode(psmouse);
2152 return ret;
2153 }
2154
2155 static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base)
2156 {
2157 struct ps2dev *ps2dev = &psmouse->ps2dev;
2158 int ret = 0;
2159 unsigned char param[4];
2160
2161 if (alps_passthrough_mode_v3(psmouse, reg_base, true))
2162 return -EIO;
2163
2164 /*
2165 * E7 report for the trackstick
2166 *
2167 * There have been reports of failures to seem to trace back
2168 * to the above trackstick check failing. When these occur
2169 * this E7 report fails, so when that happens we continue
2170 * with the assumption that there isn't a trackstick after
2171 * all.
2172 */
2173 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) {
2174 psmouse_warn(psmouse, "Failed to initialize trackstick (E7 report failed)\n");
2175 ret = -ENODEV;
2176 } else {
2177 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param);
2178
2179 /*
2180 * Not sure what this does, but it is absolutely
2181 * essential. Without it, the touchpad does not
2182 * work at all and the trackstick just emits normal
2183 * PS/2 packets.
2184 */
2185 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
2186 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
2187 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
2188 alps_command_mode_send_nibble(psmouse, 0x9) ||
2189 alps_command_mode_send_nibble(psmouse, 0x4)) {
2190 psmouse_err(psmouse,
2191 "Error sending magic E6 sequence\n");
2192 ret = -EIO;
2193 goto error;
2194 }
2195
2196 /*
2197 * This ensures the trackstick packets are in the format
2198 * supported by this driver. If bit 1 isn't set the packet
2199 * format is different.
2200 */
2201 if (alps_enter_command_mode(psmouse) ||
2202 alps_command_mode_write_reg(psmouse,
2203 reg_base + 0x08, 0x82) ||
2204 alps_exit_command_mode(psmouse))
2205 ret = -EIO;
2206 }
2207
2208 error:
2209 if (alps_passthrough_mode_v3(psmouse, reg_base, false))
2210 ret = -EIO;
2211
2212 return ret;
2213 }
2214
2215 static int alps_hw_init_v3(struct psmouse *psmouse)
2216 {
2217 struct alps_data *priv = psmouse->private;
2218 struct ps2dev *ps2dev = &psmouse->ps2dev;
2219 int reg_val;
2220 unsigned char param[4];
2221
2222 if ((priv->flags & ALPS_DUALPOINT) &&
2223 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO)
2224 goto error;
2225
2226 if (alps_enter_command_mode(psmouse) ||
2227 alps_absolute_mode_v3(psmouse)) {
2228 psmouse_err(psmouse, "Failed to enter absolute mode\n");
2229 goto error;
2230 }
2231
2232 reg_val = alps_command_mode_read_reg(psmouse, 0x0006);
2233 if (reg_val == -1)
2234 goto error;
2235 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
2236 goto error;
2237
2238 reg_val = alps_command_mode_read_reg(psmouse, 0x0007);
2239 if (reg_val == -1)
2240 goto error;
2241 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
2242 goto error;
2243
2244 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1)
2245 goto error;
2246 if (__alps_command_mode_write_reg(psmouse, 0x04))
2247 goto error;
2248
2249 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1)
2250 goto error;
2251 if (__alps_command_mode_write_reg(psmouse, 0x03))
2252 goto error;
2253
2254 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1)
2255 goto error;
2256 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03))
2257 goto error;
2258
2259 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1)
2260 goto error;
2261 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04))
2262 goto error;
2263
2264 alps_exit_command_mode(psmouse);
2265
2266 /* Set rate and enable data reporting */
2267 param[0] = 0x64;
2268 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
2269 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
2270 psmouse_err(psmouse, "Failed to enable data reporting\n");
2271 return -1;
2272 }
2273
2274 return 0;
2275
2276 error:
2277 /*
2278 * Leaving the touchpad in command mode will essentially render
2279 * it unusable until the machine reboots, so exit it here just
2280 * to be safe
2281 */
2282 alps_exit_command_mode(psmouse);
2283 return -1;
2284 }
2285
2286 static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch)
2287 {
2288 int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys;
2289 struct alps_data *priv = psmouse->private;
2290
2291 reg = alps_command_mode_read_reg(psmouse, reg_pitch);
2292 if (reg < 0)
2293 return reg;
2294
2295 x_pitch = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */
2296 x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */
2297
2298 y_pitch = (char)reg >> 4; /* sign extend upper 4 bits */
2299 y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */
2300
2301 reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1);
2302 if (reg < 0)
2303 return reg;
2304
2305 x_electrode = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */
2306 x_electrode = 17 + x_electrode;
2307
2308 y_electrode = (char)reg >> 4; /* sign extend upper 4 bits */
2309 y_electrode = 13 + y_electrode;
2310
2311 x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */
2312 y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */
2313
2314 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */
2315 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */
2316
2317 psmouse_dbg(psmouse,
2318 "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n",
2319 x_pitch, y_pitch, x_electrode, y_electrode,
2320 x_phys / 10, y_phys / 10, priv->x_res, priv->y_res);
2321
2322 return 0;
2323 }
2324
2325 static int alps_hw_init_rushmore_v3(struct psmouse *psmouse)
2326 {
2327 struct alps_data *priv = psmouse->private;
2328 struct ps2dev *ps2dev = &psmouse->ps2dev;
2329 int reg_val, ret = -1;
2330
2331 if (priv->flags & ALPS_DUALPOINT) {
2332 reg_val = alps_setup_trackstick_v3(psmouse,
2333 ALPS_REG_BASE_RUSHMORE);
2334 if (reg_val == -EIO)
2335 goto error;
2336 }
2337
2338 if (alps_enter_command_mode(psmouse) ||
2339 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 ||
2340 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00))
2341 goto error;
2342
2343 if (alps_get_v3_v7_resolution(psmouse, 0xc2da))
2344 goto error;
2345
2346 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6);
2347 if (reg_val == -1)
2348 goto error;
2349 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd))
2350 goto error;
2351
2352 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64))
2353 goto error;
2354
2355 /* enter absolute mode */
2356 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4);
2357 if (reg_val == -1)
2358 goto error;
2359 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02))
2360 goto error;
2361
2362 alps_exit_command_mode(psmouse);
2363 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
2364
2365 error:
2366 alps_exit_command_mode(psmouse);
2367 return ret;
2368 }
2369
2370 /* Must be in command mode when calling this function */
2371 static int alps_absolute_mode_v4(struct psmouse *psmouse)
2372 {
2373 int reg_val;
2374
2375 reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
2376 if (reg_val == -1)
2377 return -1;
2378
2379 reg_val |= 0x02;
2380 if (__alps_command_mode_write_reg(psmouse, reg_val))
2381 return -1;
2382
2383 return 0;
2384 }
2385
2386 static int alps_hw_init_v4(struct psmouse *psmouse)
2387 {
2388 struct ps2dev *ps2dev = &psmouse->ps2dev;
2389 unsigned char param[4];
2390
2391 if (alps_enter_command_mode(psmouse))
2392 goto error;
2393
2394 if (alps_absolute_mode_v4(psmouse)) {
2395 psmouse_err(psmouse, "Failed to enter absolute mode\n");
2396 goto error;
2397 }
2398
2399 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c))
2400 goto error;
2401
2402 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03))
2403 goto error;
2404
2405 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03))
2406 goto error;
2407
2408 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15))
2409 goto error;
2410
2411 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01))
2412 goto error;
2413
2414 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03))
2415 goto error;
2416
2417 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03))
2418 goto error;
2419
2420 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03))
2421 goto error;
2422
2423 alps_exit_command_mode(psmouse);
2424
2425 /*
2426 * This sequence changes the output from a 9-byte to an
2427 * 8-byte format. All the same data seems to be present,
2428 * just in a more compact format.
2429 */
2430 param[0] = 0xc8;
2431 param[1] = 0x64;
2432 param[2] = 0x50;
2433 if (ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
2434 ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE) ||
2435 ps2_command(ps2dev, &param[2], PSMOUSE_CMD_SETRATE) ||
2436 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID))
2437 return -1;
2438
2439 /* Set rate and enable data reporting */
2440 param[0] = 0x64;
2441 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
2442 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
2443 psmouse_err(psmouse, "Failed to enable data reporting\n");
2444 return -1;
2445 }
2446
2447 return 0;
2448
2449 error:
2450 /*
2451 * Leaving the touchpad in command mode will essentially render
2452 * it unusable until the machine reboots, so exit it here just
2453 * to be safe
2454 */
2455 alps_exit_command_mode(psmouse);
2456 return -1;
2457 }
2458
2459 static int alps_get_otp_values_ss4_v2(struct psmouse *psmouse,
2460 unsigned char index, unsigned char otp[])
2461 {
2462 struct ps2dev *ps2dev = &psmouse->ps2dev;
2463
2464 switch (index) {
2465 case 0:
2466 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
2467 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
2468 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO))
2469 return -1;
2470
2471 break;
2472
2473 case 1:
2474 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
2475 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
2476 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO))
2477 return -1;
2478
2479 break;
2480 }
2481
2482 return 0;
2483 }
2484
2485 static int alps_update_device_area_ss4_v2(unsigned char otp[][4],
2486 struct alps_data *priv)
2487 {
2488 int num_x_electrode;
2489 int num_y_electrode;
2490 int x_pitch, y_pitch, x_phys, y_phys;
2491
2492 if (IS_SS4PLUS_DEV(priv->dev_id)) {
2493 num_x_electrode =
2494 SS4PLUS_NUMSENSOR_XOFFSET + (otp[0][2] & 0x0F);
2495 num_y_electrode =
2496 SS4PLUS_NUMSENSOR_YOFFSET + ((otp[0][2] >> 4) & 0x0F);
2497
2498 priv->x_max =
2499 (num_x_electrode - 1) * SS4PLUS_COUNT_PER_ELECTRODE;
2500 priv->y_max =
2501 (num_y_electrode - 1) * SS4PLUS_COUNT_PER_ELECTRODE;
2502
2503 x_pitch = (otp[0][1] & 0x0F) + SS4PLUS_MIN_PITCH_MM;
2504 y_pitch = ((otp[0][1] >> 4) & 0x0F) + SS4PLUS_MIN_PITCH_MM;
2505
2506 } else {
2507 num_x_electrode =
2508 SS4_NUMSENSOR_XOFFSET + (otp[1][0] & 0x0F);
2509 num_y_electrode =
2510 SS4_NUMSENSOR_YOFFSET + ((otp[1][0] >> 4) & 0x0F);
2511
2512 priv->x_max =
2513 (num_x_electrode - 1) * SS4_COUNT_PER_ELECTRODE;
2514 priv->y_max =
2515 (num_y_electrode - 1) * SS4_COUNT_PER_ELECTRODE;
2516
2517 x_pitch = ((otp[1][2] >> 2) & 0x07) + SS4_MIN_PITCH_MM;
2518 y_pitch = ((otp[1][2] >> 5) & 0x07) + SS4_MIN_PITCH_MM;
2519 }
2520
2521 x_phys = x_pitch * (num_x_electrode - 1); /* In 0.1 mm units */
2522 y_phys = y_pitch * (num_y_electrode - 1); /* In 0.1 mm units */
2523
2524 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */
2525 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */
2526
2527 return 0;
2528 }
2529
2530 static int alps_update_btn_info_ss4_v2(unsigned char otp[][4],
2531 struct alps_data *priv)
2532 {
2533 unsigned char is_btnless;
2534
2535 if (IS_SS4PLUS_DEV(priv->dev_id))
2536 is_btnless = (otp[1][0] >> 1) & 0x01;
2537 else
2538 is_btnless = (otp[1][1] >> 3) & 0x01;
2539
2540 if (is_btnless)
2541 priv->flags |= ALPS_BUTTONPAD;
2542
2543 return 0;
2544 }
2545
2546 static int alps_update_dual_info_ss4_v2(unsigned char otp[][4],
2547 struct alps_data *priv)
2548 {
2549 bool is_dual = false;
2550
2551 if (IS_SS4PLUS_DEV(priv->dev_id))
2552 is_dual = (otp[0][0] >> 4) & 0x01;
2553
2554 if (is_dual)
2555 priv->flags |= ALPS_DUALPOINT |
2556 ALPS_DUALPOINT_WITH_PRESSURE;
2557
2558 return 0;
2559 }
2560
2561 static int alps_set_defaults_ss4_v2(struct psmouse *psmouse,
2562 struct alps_data *priv)
2563 {
2564 unsigned char otp[2][4];
2565
2566 memset(otp, 0, sizeof(otp));
2567
2568 if (alps_get_otp_values_ss4_v2(psmouse, 1, &otp[1][0]) ||
2569 alps_get_otp_values_ss4_v2(psmouse, 0, &otp[0][0]))
2570 return -1;
2571
2572 alps_update_device_area_ss4_v2(otp, priv);
2573
2574 alps_update_btn_info_ss4_v2(otp, priv);
2575
2576 alps_update_dual_info_ss4_v2(otp, priv);
2577
2578 return 0;
2579 }
2580
2581 static int alps_dolphin_get_device_area(struct psmouse *psmouse,
2582 struct alps_data *priv)
2583 {
2584 struct ps2dev *ps2dev = &psmouse->ps2dev;
2585 unsigned char param[4] = {0};
2586 int num_x_electrode, num_y_electrode;
2587
2588 if (alps_enter_command_mode(psmouse))
2589 return -1;
2590
2591 param[0] = 0x0a;
2592 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
2593 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
2594 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
2595 ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
2596 ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE))
2597 return -1;
2598
2599 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
2600 return -1;
2601
2602 /*
2603 * Dolphin's sensor line number is not fixed. It can be calculated
2604 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET.
2605 * Further more, we can get device's x_max and y_max by multiplying
2606 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE.
2607 *
2608 * e.g. When we get register's sensor_x = 11 & sensor_y = 8,
2609 * real sensor line number X = 11 + 8 = 19, and
2610 * real sensor line number Y = 8 + 1 = 9.
2611 * So, x_max = (19 - 1) * 64 = 1152, and
2612 * y_max = (9 - 1) * 64 = 512.
2613 */
2614 num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F);
2615 num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F);
2616 priv->x_bits = num_x_electrode;
2617 priv->y_bits = num_y_electrode;
2618 priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE;
2619 priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE;
2620
2621 if (alps_exit_command_mode(psmouse))
2622 return -1;
2623
2624 return 0;
2625 }
2626
2627 static int alps_hw_init_dolphin_v1(struct psmouse *psmouse)
2628 {
2629 struct ps2dev *ps2dev = &psmouse->ps2dev;
2630 unsigned char param[2];
2631
2632 /* This is dolphin "v1" as empirically defined by florin9doi */
2633 param[0] = 0x64;
2634 param[1] = 0x28;
2635
2636 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
2637 ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
2638 ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE))
2639 return -1;
2640
2641 return 0;
2642 }
2643
2644 static int alps_hw_init_v7(struct psmouse *psmouse)
2645 {
2646 struct ps2dev *ps2dev = &psmouse->ps2dev;
2647 int reg_val, ret = -1;
2648
2649 if (alps_enter_command_mode(psmouse) ||
2650 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1)
2651 goto error;
2652
2653 if (alps_get_v3_v7_resolution(psmouse, 0xc397))
2654 goto error;
2655
2656 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64))
2657 goto error;
2658
2659 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4);
2660 if (reg_val == -1)
2661 goto error;
2662 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02))
2663 goto error;
2664
2665 alps_exit_command_mode(psmouse);
2666 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
2667
2668 error:
2669 alps_exit_command_mode(psmouse);
2670 return ret;
2671 }
2672
2673 static int alps_hw_init_ss4_v2(struct psmouse *psmouse)
2674 {
2675 struct ps2dev *ps2dev = &psmouse->ps2dev;
2676 char param[2] = {0x64, 0x28};
2677 int ret = -1;
2678
2679 /* enter absolute mode */
2680 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
2681 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
2682 ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
2683 ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE)) {
2684 goto error;
2685 }
2686
2687 /* T.B.D. Decread noise packet number, delete in the future */
2688 if (alps_exit_command_mode(psmouse) ||
2689 alps_enter_command_mode(psmouse) ||
2690 alps_command_mode_write_reg(psmouse, 0x001D, 0x20)) {
2691 goto error;
2692 }
2693 alps_exit_command_mode(psmouse);
2694
2695 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
2696
2697 error:
2698 alps_exit_command_mode(psmouse);
2699 return ret;
2700 }
2701
2702 static int alps_set_protocol(struct psmouse *psmouse,
2703 struct alps_data *priv,
2704 const struct alps_protocol_info *protocol)
2705 {
2706 psmouse->private = priv;
2707
2708 timer_setup(&priv->timer, alps_flush_packet, 0);
2709
2710 priv->proto_version = protocol->version;
2711 priv->byte0 = protocol->byte0;
2712 priv->mask0 = protocol->mask0;
2713 priv->flags = protocol->flags;
2714
2715 priv->x_max = 2000;
2716 priv->y_max = 1400;
2717 priv->x_bits = 15;
2718 priv->y_bits = 11;
2719
2720 switch (priv->proto_version) {
2721 case ALPS_PROTO_V1:
2722 case ALPS_PROTO_V2:
2723 priv->hw_init = alps_hw_init_v1_v2;
2724 priv->process_packet = alps_process_packet_v1_v2;
2725 priv->set_abs_params = alps_set_abs_params_st;
2726 priv->x_max = 1023;
2727 priv->y_max = 767;
2728 if (dmi_check_system(alps_dmi_has_separate_stick_buttons))
2729 priv->flags |= ALPS_STICK_BITS;
2730 break;
2731
2732 case ALPS_PROTO_V3:
2733 priv->hw_init = alps_hw_init_v3;
2734 priv->process_packet = alps_process_packet_v3;
2735 priv->set_abs_params = alps_set_abs_params_semi_mt;
2736 priv->decode_fields = alps_decode_pinnacle;
2737 priv->nibble_commands = alps_v3_nibble_commands;
2738 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2739
2740 if (alps_probe_trackstick_v3_v7(psmouse,
2741 ALPS_REG_BASE_PINNACLE) < 0)
2742 priv->flags &= ~ALPS_DUALPOINT;
2743
2744 break;
2745
2746 case ALPS_PROTO_V3_RUSHMORE:
2747 priv->hw_init = alps_hw_init_rushmore_v3;
2748 priv->process_packet = alps_process_packet_v3;
2749 priv->set_abs_params = alps_set_abs_params_semi_mt;
2750 priv->decode_fields = alps_decode_rushmore;
2751 priv->nibble_commands = alps_v3_nibble_commands;
2752 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2753 priv->x_bits = 16;
2754 priv->y_bits = 12;
2755
2756 if (alps_probe_trackstick_v3_v7(psmouse,
2757 ALPS_REG_BASE_RUSHMORE) < 0)
2758 priv->flags &= ~ALPS_DUALPOINT;
2759
2760 break;
2761
2762 case ALPS_PROTO_V4:
2763 priv->hw_init = alps_hw_init_v4;
2764 priv->process_packet = alps_process_packet_v4;
2765 priv->set_abs_params = alps_set_abs_params_semi_mt;
2766 priv->nibble_commands = alps_v4_nibble_commands;
2767 priv->addr_command = PSMOUSE_CMD_DISABLE;
2768 break;
2769
2770 case ALPS_PROTO_V5:
2771 priv->hw_init = alps_hw_init_dolphin_v1;
2772 priv->process_packet = alps_process_touchpad_packet_v3_v5;
2773 priv->decode_fields = alps_decode_dolphin;
2774 priv->set_abs_params = alps_set_abs_params_semi_mt;
2775 priv->nibble_commands = alps_v3_nibble_commands;
2776 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2777 priv->x_bits = 23;
2778 priv->y_bits = 12;
2779
2780 if (alps_dolphin_get_device_area(psmouse, priv))
2781 return -EIO;
2782
2783 break;
2784
2785 case ALPS_PROTO_V6:
2786 priv->hw_init = alps_hw_init_v6;
2787 priv->process_packet = alps_process_packet_v6;
2788 priv->set_abs_params = alps_set_abs_params_st;
2789 priv->nibble_commands = alps_v6_nibble_commands;
2790 priv->x_max = 2047;
2791 priv->y_max = 1535;
2792 break;
2793
2794 case ALPS_PROTO_V7:
2795 priv->hw_init = alps_hw_init_v7;
2796 priv->process_packet = alps_process_packet_v7;
2797 priv->decode_fields = alps_decode_packet_v7;
2798 priv->set_abs_params = alps_set_abs_params_v7;
2799 priv->nibble_commands = alps_v3_nibble_commands;
2800 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2801 priv->x_max = 0xfff;
2802 priv->y_max = 0x7ff;
2803
2804 if (priv->fw_ver[1] != 0xba)
2805 priv->flags |= ALPS_BUTTONPAD;
2806
2807 if (alps_probe_trackstick_v3_v7(psmouse, ALPS_REG_BASE_V7) < 0)
2808 priv->flags &= ~ALPS_DUALPOINT;
2809
2810 break;
2811
2812 case ALPS_PROTO_V8:
2813 priv->hw_init = alps_hw_init_ss4_v2;
2814 priv->process_packet = alps_process_packet_ss4_v2;
2815 priv->decode_fields = alps_decode_ss4_v2;
2816 priv->set_abs_params = alps_set_abs_params_ss4_v2;
2817 priv->nibble_commands = alps_v3_nibble_commands;
2818 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2819
2820 if (alps_set_defaults_ss4_v2(psmouse, priv))
2821 return -EIO;
2822
2823 break;
2824 }
2825
2826 return 0;
2827 }
2828
2829 static const struct alps_protocol_info *alps_match_table(unsigned char *e7,
2830 unsigned char *ec)
2831 {
2832 const struct alps_model_info *model;
2833 int i;
2834
2835 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) {
2836 model = &alps_model_data[i];
2837
2838 if (!memcmp(e7, model->signature, sizeof(model->signature)))
2839 return &model->protocol_info;
2840 }
2841
2842 return NULL;
2843 }
2844
2845 static int alps_identify(struct psmouse *psmouse, struct alps_data *priv)
2846 {
2847 const struct alps_protocol_info *protocol;
2848 unsigned char e6[4], e7[4], ec[4];
2849 int error;
2850
2851 /*
2852 * First try "E6 report".
2853 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed.
2854 * The bits 0-2 of the first byte will be 1s if some buttons are
2855 * pressed.
2856 */
2857 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
2858 PSMOUSE_CMD_SETSCALE11, e6))
2859 return -EIO;
2860
2861 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100))
2862 return -EINVAL;
2863
2864 /*
2865 * Now get the "E7" and "EC" reports. These will uniquely identify
2866 * most ALPS touchpads.
2867 */
2868 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
2869 PSMOUSE_CMD_SETSCALE21, e7) ||
2870 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
2871 PSMOUSE_CMD_RESET_WRAP, ec) ||
2872 alps_exit_command_mode(psmouse))
2873 return -EIO;
2874
2875 protocol = alps_match_table(e7, ec);
2876 if (!protocol) {
2877 if (e7[0] == 0x73 && e7[1] == 0x02 && e7[2] == 0x64 &&
2878 ec[2] == 0x8a) {
2879 protocol = &alps_v4_protocol_data;
2880 } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 &&
2881 ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) {
2882 protocol = &alps_v5_protocol_data;
2883 } else if (ec[0] == 0x88 &&
2884 ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) {
2885 protocol = &alps_v7_protocol_data;
2886 } else if (ec[0] == 0x88 && ec[1] == 0x08) {
2887 protocol = &alps_v3_rushmore_data;
2888 } else if (ec[0] == 0x88 && ec[1] == 0x07 &&
2889 ec[2] >= 0x90 && ec[2] <= 0x9d) {
2890 protocol = &alps_v3_protocol_data;
2891 } else if (e7[0] == 0x73 && e7[1] == 0x03 &&
2892 (e7[2] == 0x14 || e7[2] == 0x28)) {
2893 protocol = &alps_v8_protocol_data;
2894 } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0xc8) {
2895 protocol = &alps_v9_protocol_data;
2896 psmouse_warn(psmouse,
2897 "Unsupported ALPS V9 touchpad: E7=%3ph, EC=%3ph\n",
2898 e7, ec);
2899 return -EINVAL;
2900 } else {
2901 psmouse_dbg(psmouse,
2902 "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec);
2903 return -EINVAL;
2904 }
2905 }
2906
2907 if (priv) {
2908 /* Save Device ID and Firmware version */
2909 memcpy(priv->dev_id, e7, 3);
2910 memcpy(priv->fw_ver, ec, 3);
2911 error = alps_set_protocol(psmouse, priv, protocol);
2912 if (error)
2913 return error;
2914 }
2915
2916 return 0;
2917 }
2918
2919 static int alps_reconnect(struct psmouse *psmouse)
2920 {
2921 struct alps_data *priv = psmouse->private;
2922
2923 psmouse_reset(psmouse);
2924
2925 if (alps_identify(psmouse, priv) < 0)
2926 return -1;
2927
2928 return priv->hw_init(psmouse);
2929 }
2930
2931 static void alps_disconnect(struct psmouse *psmouse)
2932 {
2933 struct alps_data *priv = psmouse->private;
2934
2935 psmouse_reset(psmouse);
2936 del_timer_sync(&priv->timer);
2937 if (priv->dev2)
2938 input_unregister_device(priv->dev2);
2939 if (!IS_ERR_OR_NULL(priv->dev3))
2940 input_unregister_device(priv->dev3);
2941 kfree(priv);
2942 }
2943
2944 static void alps_set_abs_params_st(struct alps_data *priv,
2945 struct input_dev *dev1)
2946 {
2947 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0);
2948 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0);
2949 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
2950 }
2951
2952 static void alps_set_abs_params_mt_common(struct alps_data *priv,
2953 struct input_dev *dev1)
2954 {
2955 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0);
2956 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0);
2957
2958 input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res);
2959 input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res);
2960
2961 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit);
2962 set_bit(BTN_TOOL_QUADTAP, dev1->keybit);
2963 }
2964
2965 static void alps_set_abs_params_semi_mt(struct alps_data *priv,
2966 struct input_dev *dev1)
2967 {
2968 alps_set_abs_params_mt_common(priv, dev1);
2969 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
2970
2971 input_mt_init_slots(dev1, MAX_TOUCHES,
2972 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED |
2973 INPUT_MT_SEMI_MT);
2974 }
2975
2976 static void alps_set_abs_params_v7(struct alps_data *priv,
2977 struct input_dev *dev1)
2978 {
2979 alps_set_abs_params_mt_common(priv, dev1);
2980 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit);
2981
2982 input_mt_init_slots(dev1, MAX_TOUCHES,
2983 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED |
2984 INPUT_MT_TRACK);
2985
2986 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit);
2987 }
2988
2989 static void alps_set_abs_params_ss4_v2(struct alps_data *priv,
2990 struct input_dev *dev1)
2991 {
2992 alps_set_abs_params_mt_common(priv, dev1);
2993 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
2994 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit);
2995
2996 input_mt_init_slots(dev1, MAX_TOUCHES,
2997 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED |
2998 INPUT_MT_TRACK);
2999 }
3000
3001 int alps_init(struct psmouse *psmouse)
3002 {
3003 struct alps_data *priv = psmouse->private;
3004 struct input_dev *dev1 = psmouse->dev;
3005 int error;
3006
3007 error = priv->hw_init(psmouse);
3008 if (error)
3009 goto init_fail;
3010
3011 /*
3012 * Undo part of setup done for us by psmouse core since touchpad
3013 * is not a relative device.
3014 */
3015 __clear_bit(EV_REL, dev1->evbit);
3016 __clear_bit(REL_X, dev1->relbit);
3017 __clear_bit(REL_Y, dev1->relbit);
3018
3019 /*
3020 * Now set up our capabilities.
3021 */
3022 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY);
3023 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH);
3024 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER);
3025 dev1->keybit[BIT_WORD(BTN_LEFT)] |=
3026 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
3027
3028 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS);
3029
3030 priv->set_abs_params(priv, dev1);
3031
3032 if (priv->flags & ALPS_WHEEL) {
3033 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL);
3034 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL);
3035 }
3036
3037 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
3038 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD);
3039 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK);
3040 }
3041
3042 if (priv->flags & ALPS_FOUR_BUTTONS) {
3043 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0);
3044 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1);
3045 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2);
3046 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3);
3047 } else if (priv->flags & ALPS_BUTTONPAD) {
3048 set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit);
3049 clear_bit(BTN_RIGHT, dev1->keybit);
3050 } else {
3051 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE);
3052 }
3053
3054 if (priv->flags & ALPS_DUALPOINT) {
3055 struct input_dev *dev2;
3056
3057 dev2 = input_allocate_device();
3058 if (!dev2) {
3059 psmouse_err(psmouse,
3060 "failed to allocate trackstick device\n");
3061 error = -ENOMEM;
3062 goto init_fail;
3063 }
3064
3065 snprintf(priv->phys2, sizeof(priv->phys2), "%s/input1",
3066 psmouse->ps2dev.serio->phys);
3067 dev2->phys = priv->phys2;
3068
3069 /*
3070 * format of input device name is: "protocol vendor name"
3071 * see function psmouse_switch_protocol() in psmouse-base.c
3072 */
3073 dev2->name = "AlpsPS/2 ALPS DualPoint Stick";
3074
3075 dev2->id.bustype = BUS_I8042;
3076 dev2->id.vendor = 0x0002;
3077 dev2->id.product = PSMOUSE_ALPS;
3078 dev2->id.version = priv->proto_version;
3079 dev2->dev.parent = &psmouse->ps2dev.serio->dev;
3080
3081 input_set_capability(dev2, EV_REL, REL_X);
3082 input_set_capability(dev2, EV_REL, REL_Y);
3083 if (priv->flags & ALPS_DUALPOINT_WITH_PRESSURE) {
3084 input_set_capability(dev2, EV_ABS, ABS_PRESSURE);
3085 input_set_abs_params(dev2, ABS_PRESSURE, 0, 127, 0, 0);
3086 }
3087 input_set_capability(dev2, EV_KEY, BTN_LEFT);
3088 input_set_capability(dev2, EV_KEY, BTN_RIGHT);
3089 input_set_capability(dev2, EV_KEY, BTN_MIDDLE);
3090
3091 __set_bit(INPUT_PROP_POINTER, dev2->propbit);
3092 __set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit);
3093
3094 error = input_register_device(dev2);
3095 if (error) {
3096 psmouse_err(psmouse,
3097 "failed to register trackstick device: %d\n",
3098 error);
3099 input_free_device(dev2);
3100 goto init_fail;
3101 }
3102
3103 priv->dev2 = dev2;
3104 }
3105
3106 priv->psmouse = psmouse;
3107
3108 INIT_DELAYED_WORK(&priv->dev3_register_work,
3109 alps_register_bare_ps2_mouse);
3110
3111 psmouse->protocol_handler = alps_process_byte;
3112 psmouse->poll = alps_poll;
3113 psmouse->disconnect = alps_disconnect;
3114 psmouse->reconnect = alps_reconnect;
3115 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6;
3116
3117 /* We are having trouble resyncing ALPS touchpads so disable it for now */
3118 psmouse->resync_time = 0;
3119
3120 /* Allow 2 invalid packets without resetting device */
3121 psmouse->resetafter = psmouse->pktsize * 2;
3122
3123 return 0;
3124
3125 init_fail:
3126 psmouse_reset(psmouse);
3127 /*
3128 * Even though we did not allocate psmouse->private we do free
3129 * it here.
3130 */
3131 kfree(psmouse->private);
3132 psmouse->private = NULL;
3133 return error;
3134 }
3135
3136 int alps_detect(struct psmouse *psmouse, bool set_properties)
3137 {
3138 struct alps_data *priv;
3139 int error;
3140
3141 error = alps_identify(psmouse, NULL);
3142 if (error)
3143 return error;
3144
3145 /*
3146 * Reset the device to make sure it is fully operational:
3147 * on some laptops, like certain Dell Latitudes, we may
3148 * fail to properly detect presence of trackstick if device
3149 * has not been reset.
3150 */
3151 psmouse_reset(psmouse);
3152
3153 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL);
3154 if (!priv)
3155 return -ENOMEM;
3156
3157 error = alps_identify(psmouse, priv);
3158 if (error) {
3159 kfree(priv);
3160 return error;
3161 }
3162
3163 if (set_properties) {
3164 psmouse->vendor = "ALPS";
3165 psmouse->name = priv->flags & ALPS_DUALPOINT ?
3166 "DualPoint TouchPad" : "GlidePoint";
3167 psmouse->model = priv->proto_version;
3168 } else {
3169 /*
3170 * Destroy alps_data structure we allocated earlier since
3171 * this was just a "trial run". Otherwise we'll keep it
3172 * to be used by alps_init() which has to be called if
3173 * we succeed and set_properties is true.
3174 */
3175 kfree(priv);
3176 psmouse->private = NULL;
3177 }
3178
3179 return 0;
3180 }
3181
CRIS linux kernel tree