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