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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
[linux/fpc-iii.git] / drivers / input / mouse / alps.c
blobfb15c64ffb957f3485be2751474a76e3bccf9682
1 /*
2 * ALPS touchpad PS/2 mouse driver
3 *
4 * Copyright (c) 2003 Neil Brown <neilb@cse.unsw.edu.au>
5 * Copyright (c) 2003-2005 Peter Osterlund <petero2@telia.com>
6 * Copyright (c) 2004 Dmitry Torokhov <dtor@mail.ru>
7 * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
8 * Copyright (c) 2009 Sebastian Kapfer <sebastian_kapfer@gmx.net>
9 *
10 * ALPS detection, tap switching and status querying info is taken from
11 * tpconfig utility (by C. Scott Ananian and Bruce Kall).
12 *
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License version 2 as published by
15 * the Free Software Foundation.
16 */
17
18 #include <linux/slab.h>
19 #include <linux/input.h>
20 #include <linux/input/mt.h>
21 #include <linux/serio.h>
22 #include <linux/libps2.h>
23
24 #include "psmouse.h"
25 #include "alps.h"
26
27 /*
28 * Definitions for ALPS version 3 and 4 command mode protocol
29 */
30 #define ALPS_CMD_NIBBLE_10 0x01f2
31
32 #define ALPS_REG_BASE_RUSHMORE 0xc2c0
33 #define ALPS_REG_BASE_PINNACLE 0x0000
34
35 static const struct alps_nibble_commands alps_v3_nibble_commands[] = {
36 { PSMOUSE_CMD_SETPOLL, 0x00 }, /* 0 */
37 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */
38 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */
39 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */
40 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */
41 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */
42 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */
43 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */
44 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */
45 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */
46 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */
47 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */
48 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */
49 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */
50 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */
51 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */
52 };
53
54 static const struct alps_nibble_commands alps_v4_nibble_commands[] = {
55 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */
56 { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */
57 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */
58 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */
59 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */
60 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */
61 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */
62 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */
63 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */
64 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */
65 { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */
66 { PSMOUSE_CMD_SETRES, 0x00 }, /* b */
67 { PSMOUSE_CMD_SETRES, 0x01 }, /* c */
68 { PSMOUSE_CMD_SETRES, 0x02 }, /* d */
69 { PSMOUSE_CMD_SETRES, 0x03 }, /* e */
70 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */
71 };
72
73 static const struct alps_nibble_commands alps_v6_nibble_commands[] = {
74 { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */
75 { PSMOUSE_CMD_SETRATE, 0x0a }, /* 1 */
76 { PSMOUSE_CMD_SETRATE, 0x14 }, /* 2 */
77 { PSMOUSE_CMD_SETRATE, 0x28 }, /* 3 */
78 { PSMOUSE_CMD_SETRATE, 0x3c }, /* 4 */
79 { PSMOUSE_CMD_SETRATE, 0x50 }, /* 5 */
80 { PSMOUSE_CMD_SETRATE, 0x64 }, /* 6 */
81 { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 7 */
82 { PSMOUSE_CMD_GETID, 0x00 }, /* 8 */
83 { PSMOUSE_CMD_GETINFO, 0x00 }, /* 9 */
84 { PSMOUSE_CMD_SETRES, 0x00 }, /* a */
85 { PSMOUSE_CMD_SETRES, 0x01 }, /* b */
86 { PSMOUSE_CMD_SETRES, 0x02 }, /* c */
87 { PSMOUSE_CMD_SETRES, 0x03 }, /* d */
88 { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* e */
89 { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */
90 };
91
92
93 #define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */
94 #define ALPS_PASS 0x04 /* device has a pass-through port */
95
96 #define ALPS_WHEEL 0x08 /* hardware wheel present */
97 #define ALPS_FW_BK_1 0x10 /* front & back buttons present */
98 #define ALPS_FW_BK_2 0x20 /* front & back buttons present */
99 #define ALPS_FOUR_BUTTONS 0x40 /* 4 direction button present */
100 #define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with
101 6-byte ALPS packet */
102
103 static const struct alps_model_info alps_model_data[] = {
104 { { 0x32, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Toshiba Salellite Pro M10 */
105 { { 0x33, 0x02, 0x0a }, 0x00, ALPS_PROTO_V1, 0x88, 0xf8, 0 }, /* UMAX-530T */
106 { { 0x53, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
107 { { 0x53, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
108 { { 0x60, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, /* HP ze1115 */
109 { { 0x63, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
110 { { 0x63, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
111 { { 0x63, 0x02, 0x28 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Fujitsu Siemens S6010 */
112 { { 0x63, 0x02, 0x3c }, 0x00, ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL }, /* Toshiba Satellite S2400-103 */
113 { { 0x63, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 }, /* NEC Versa L320 */
114 { { 0x63, 0x02, 0x64 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
115 { { 0x63, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D800 */
116 { { 0x73, 0x00, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT }, /* ThinkPad R61 8918-5QG */
117 { { 0x73, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
118 { { 0x73, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Ahtec Laptop */
119 { { 0x20, 0x02, 0x0e }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* XXX */
120 { { 0x22, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT },
121 { { 0x22, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D600 */
122 /* Dell Latitude E5500, E6400, E6500, Precision M4400 */
123 { { 0x62, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf,
124 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED },
125 { { 0x73, 0x00, 0x14 }, 0x00, ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT }, /* Dell XT2 */
126 { { 0x73, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS }, /* Dell Vostro 1400 */
127 { { 0x52, 0x01, 0x14 }, 0x00, ALPS_PROTO_V2, 0xff, 0xff,
128 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED }, /* Toshiba Tecra A11-11L */
129 { { 0x73, 0x02, 0x64 }, 0x8a, ALPS_PROTO_V4, 0x8f, 0x8f, 0 },
130 };
131
132 static void alps_set_abs_params_st(struct alps_data *priv,
133 struct input_dev *dev1);
134 static void alps_set_abs_params_mt(struct alps_data *priv,
135 struct input_dev *dev1);
136
137 /*
138 * XXX - this entry is suspicious. First byte has zero lower nibble,
139 * which is what a normal mouse would report. Also, the value 0x0e
140 * isn't valid per PS/2 spec.
141 */
142
143 /* Packet formats are described in Documentation/input/alps.txt */
144
145 static bool alps_is_valid_first_byte(struct alps_data *priv,
146 unsigned char data)
147 {
148 return (data & priv->mask0) == priv->byte0;
149 }
150
151 static void alps_report_buttons(struct psmouse *psmouse,
152 struct input_dev *dev1, struct input_dev *dev2,
153 int left, int right, int middle)
154 {
155 struct input_dev *dev;
156
157 /*
158 * If shared button has already been reported on the
159 * other device (dev2) then this event should be also
160 * sent through that device.
161 */
162 dev = test_bit(BTN_LEFT, dev2->key) ? dev2 : dev1;
163 input_report_key(dev, BTN_LEFT, left);
164
165 dev = test_bit(BTN_RIGHT, dev2->key) ? dev2 : dev1;
166 input_report_key(dev, BTN_RIGHT, right);
167
168 dev = test_bit(BTN_MIDDLE, dev2->key) ? dev2 : dev1;
169 input_report_key(dev, BTN_MIDDLE, middle);
170
171 /*
172 * Sync the _other_ device now, we'll do the first
173 * device later once we report the rest of the events.
174 */
175 input_sync(dev2);
176 }
177
178 static void alps_process_packet_v1_v2(struct psmouse *psmouse)
179 {
180 struct alps_data *priv = psmouse->private;
181 unsigned char *packet = psmouse->packet;
182 struct input_dev *dev = psmouse->dev;
183 struct input_dev *dev2 = priv->dev2;
184 int x, y, z, ges, fin, left, right, middle;
185 int back = 0, forward = 0;
186
187 if (priv->proto_version == ALPS_PROTO_V1) {
188 left = packet[2] & 0x10;
189 right = packet[2] & 0x08;
190 middle = 0;
191 x = packet[1] | ((packet[0] & 0x07) << 7);
192 y = packet[4] | ((packet[3] & 0x07) << 7);
193 z = packet[5];
194 } else {
195 left = packet[3] & 1;
196 right = packet[3] & 2;
197 middle = packet[3] & 4;
198 x = packet[1] | ((packet[2] & 0x78) << (7 - 3));
199 y = packet[4] | ((packet[3] & 0x70) << (7 - 4));
200 z = packet[5];
201 }
202
203 if (priv->flags & ALPS_FW_BK_1) {
204 back = packet[0] & 0x10;
205 forward = packet[2] & 4;
206 }
207
208 if (priv->flags & ALPS_FW_BK_2) {
209 back = packet[3] & 4;
210 forward = packet[2] & 4;
211 if ((middle = forward && back))
212 forward = back = 0;
213 }
214
215 ges = packet[2] & 1;
216 fin = packet[2] & 2;
217
218 if ((priv->flags & ALPS_DUALPOINT) && z == 127) {
219 input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x));
220 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y));
221
222 alps_report_buttons(psmouse, dev2, dev, left, right, middle);
223
224 input_sync(dev2);
225 return;
226 }
227
228 alps_report_buttons(psmouse, dev, dev2, left, right, middle);
229
230 /* Convert hardware tap to a reasonable Z value */
231 if (ges && !fin)
232 z = 40;
233
234 /*
235 * A "tap and drag" operation is reported by the hardware as a transition
236 * from (!fin && ges) to (fin && ges). This should be translated to the
237 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually.
238 */
239 if (ges && fin && !priv->prev_fin) {
240 input_report_abs(dev, ABS_X, x);
241 input_report_abs(dev, ABS_Y, y);
242 input_report_abs(dev, ABS_PRESSURE, 0);
243 input_report_key(dev, BTN_TOOL_FINGER, 0);
244 input_sync(dev);
245 }
246 priv->prev_fin = fin;
247
248 if (z > 30)
249 input_report_key(dev, BTN_TOUCH, 1);
250 if (z < 25)
251 input_report_key(dev, BTN_TOUCH, 0);
252
253 if (z > 0) {
254 input_report_abs(dev, ABS_X, x);
255 input_report_abs(dev, ABS_Y, y);
256 }
257
258 input_report_abs(dev, ABS_PRESSURE, z);
259 input_report_key(dev, BTN_TOOL_FINGER, z > 0);
260
261 if (priv->flags & ALPS_WHEEL)
262 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07));
263
264 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
265 input_report_key(dev, BTN_FORWARD, forward);
266 input_report_key(dev, BTN_BACK, back);
267 }
268
269 if (priv->flags & ALPS_FOUR_BUTTONS) {
270 input_report_key(dev, BTN_0, packet[2] & 4);
271 input_report_key(dev, BTN_1, packet[0] & 0x10);
272 input_report_key(dev, BTN_2, packet[3] & 4);
273 input_report_key(dev, BTN_3, packet[0] & 0x20);
274 }
275
276 input_sync(dev);
277 }
278
279 /*
280 * Process bitmap data for V5 protocols. Return value is null.
281 *
282 * The bitmaps don't have enough data to track fingers, so this function
283 * only generates points representing a bounding box of at most two contacts.
284 * These two points are returned in x1, y1, x2, and y2.
285 */
286 static void alps_process_bitmap_dolphin(struct alps_data *priv,
287 struct alps_fields *fields,
288 int *x1, int *y1, int *x2, int *y2)
289 {
290 int box_middle_x, box_middle_y;
291 unsigned int x_map, y_map;
292 unsigned char start_bit, end_bit;
293 unsigned char x_msb, x_lsb, y_msb, y_lsb;
294
295 x_map = fields->x_map;
296 y_map = fields->y_map;
297
298 if (!x_map || !y_map)
299 return;
300
301 /* Get Most-significant and Least-significant bit */
302 x_msb = fls(x_map);
303 x_lsb = ffs(x_map);
304 y_msb = fls(y_map);
305 y_lsb = ffs(y_map);
306
307 /* Most-significant bit should never exceed max sensor line number */
308 if (x_msb > priv->x_bits || y_msb > priv->y_bits)
309 return;
310
311 *x1 = *y1 = *x2 = *y2 = 0;
312
313 if (fields->fingers > 1) {
314 start_bit = priv->x_bits - x_msb;
315 end_bit = priv->x_bits - x_lsb;
316 box_middle_x = (priv->x_max * (start_bit + end_bit)) /
317 (2 * (priv->x_bits - 1));
318
319 start_bit = y_lsb - 1;
320 end_bit = y_msb - 1;
321 box_middle_y = (priv->y_max * (start_bit + end_bit)) /
322 (2 * (priv->y_bits - 1));
323 *x1 = fields->x;
324 *y1 = fields->y;
325 *x2 = 2 * box_middle_x - *x1;
326 *y2 = 2 * box_middle_y - *y1;
327 }
328 }
329
330 /*
331 * Process bitmap data from v3 and v4 protocols. Returns the number of
332 * fingers detected. A return value of 0 means at least one of the
333 * bitmaps was empty.
334 *
335 * The bitmaps don't have enough data to track fingers, so this function
336 * only generates points representing a bounding box of all contacts.
337 * These points are returned in x1, y1, x2, and y2 when the return value
338 * is greater than 0.
339 */
340 static int alps_process_bitmap(struct alps_data *priv,
341 unsigned int x_map, unsigned int y_map,
342 int *x1, int *y1, int *x2, int *y2)
343 {
344 struct alps_bitmap_point {
345 int start_bit;
346 int num_bits;
347 };
348
349 int fingers_x = 0, fingers_y = 0, fingers;
350 int i, bit, prev_bit;
351 struct alps_bitmap_point x_low = {0,}, x_high = {0,};
352 struct alps_bitmap_point y_low = {0,}, y_high = {0,};
353 struct alps_bitmap_point *point;
354
355 if (!x_map || !y_map)
356 return 0;
357
358 *x1 = *y1 = *x2 = *y2 = 0;
359
360 prev_bit = 0;
361 point = &x_low;
362 for (i = 0; x_map != 0; i++, x_map >>= 1) {
363 bit = x_map & 1;
364 if (bit) {
365 if (!prev_bit) {
366 point->start_bit = i;
367 fingers_x++;
368 }
369 point->num_bits++;
370 } else {
371 if (prev_bit)
372 point = &x_high;
373 else
374 point->num_bits = 0;
375 }
376 prev_bit = bit;
377 }
378
379 /*
380 * y bitmap is reversed for what we need (lower positions are in
381 * higher bits), so we process from the top end.
382 */
383 y_map = y_map << (sizeof(y_map) * BITS_PER_BYTE - priv->y_bits);
384 prev_bit = 0;
385 point = &y_low;
386 for (i = 0; y_map != 0; i++, y_map <<= 1) {
387 bit = y_map & (1 << (sizeof(y_map) * BITS_PER_BYTE - 1));
388 if (bit) {
389 if (!prev_bit) {
390 point->start_bit = i;
391 fingers_y++;
392 }
393 point->num_bits++;
394 } else {
395 if (prev_bit)
396 point = &y_high;
397 else
398 point->num_bits = 0;
399 }
400 prev_bit = bit;
401 }
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 total fingers is > 1 but either axis reports only a single
411 * contact, we have overlapping or adjacent fingers. For the
412 * purposes of creating a bounding box, divide the single contact
413 * (roughly) equally between the two points.
414 */
415 if (fingers > 1) {
416 if (fingers_x == 1) {
417 i = x_low.num_bits / 2;
418 x_low.num_bits = x_low.num_bits - i;
419 x_high.start_bit = x_low.start_bit + i;
420 x_high.num_bits = max(i, 1);
421 } else if (fingers_y == 1) {
422 i = y_low.num_bits / 2;
423 y_low.num_bits = y_low.num_bits - i;
424 y_high.start_bit = y_low.start_bit + i;
425 y_high.num_bits = max(i, 1);
426 }
427 }
428
429 *x1 = (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) /
430 (2 * (priv->x_bits - 1));
431 *y1 = (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) /
432 (2 * (priv->y_bits - 1));
433
434 if (fingers > 1) {
435 *x2 = (priv->x_max *
436 (2 * x_high.start_bit + x_high.num_bits - 1)) /
437 (2 * (priv->x_bits - 1));
438 *y2 = (priv->y_max *
439 (2 * y_high.start_bit + y_high.num_bits - 1)) /
440 (2 * (priv->y_bits - 1));
441 }
442
443 return fingers;
444 }
445
446 static void alps_set_slot(struct input_dev *dev, int slot, bool active,
447 int x, int y)
448 {
449 input_mt_slot(dev, slot);
450 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
451 if (active) {
452 input_report_abs(dev, ABS_MT_POSITION_X, x);
453 input_report_abs(dev, ABS_MT_POSITION_Y, y);
454 }
455 }
456
457 static void alps_report_semi_mt_data(struct input_dev *dev, int num_fingers,
458 int x1, int y1, int x2, int y2)
459 {
460 alps_set_slot(dev, 0, num_fingers != 0, x1, y1);
461 alps_set_slot(dev, 1, num_fingers == 2, x2, y2);
462 }
463
464 static void alps_process_trackstick_packet_v3(struct psmouse *psmouse)
465 {
466 struct alps_data *priv = psmouse->private;
467 unsigned char *packet = psmouse->packet;
468 struct input_dev *dev = priv->dev2;
469 int x, y, z, left, right, middle;
470
471 /* Sanity check packet */
472 if (!(packet[0] & 0x40)) {
473 psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n");
474 return;
475 }
476
477 /*
478 * There's a special packet that seems to indicate the end
479 * of a stream of trackstick data. Filter these out.
480 */
481 if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f)
482 return;
483
484 x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f));
485 y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f));
486 z = (packet[4] & 0x7c) >> 2;
487
488 /*
489 * The x and y values tend to be quite large, and when used
490 * alone the trackstick is difficult to use. Scale them down
491 * to compensate.
492 */
493 x /= 8;
494 y /= 8;
495
496 input_report_rel(dev, REL_X, x);
497 input_report_rel(dev, REL_Y, -y);
498
499 /*
500 * Most ALPS models report the trackstick buttons in the touchpad
501 * packets, but a few report them here. No reliable way has been
502 * found to differentiate between the models upfront, so we enable
503 * the quirk in response to seeing a button press in the trackstick
504 * packet.
505 */
506 left = packet[3] & 0x01;
507 right = packet[3] & 0x02;
508 middle = packet[3] & 0x04;
509
510 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) &&
511 (left || right || middle))
512 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS;
513
514 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) {
515 input_report_key(dev, BTN_LEFT, left);
516 input_report_key(dev, BTN_RIGHT, right);
517 input_report_key(dev, BTN_MIDDLE, middle);
518 }
519
520 input_sync(dev);
521 return;
522 }
523
524 static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p)
525 {
526 f->left = !!(p[3] & 0x01);
527 f->right = !!(p[3] & 0x02);
528 f->middle = !!(p[3] & 0x04);
529
530 f->ts_left = !!(p[3] & 0x10);
531 f->ts_right = !!(p[3] & 0x20);
532 f->ts_middle = !!(p[3] & 0x40);
533 }
534
535 static void alps_decode_pinnacle(struct alps_fields *f, unsigned char *p,
536 struct psmouse *psmouse)
537 {
538 f->first_mp = !!(p[4] & 0x40);
539 f->is_mp = !!(p[0] & 0x40);
540
541 f->fingers = (p[5] & 0x3) + 1;
542 f->x_map = ((p[4] & 0x7e) << 8) |
543 ((p[1] & 0x7f) << 2) |
544 ((p[0] & 0x30) >> 4);
545 f->y_map = ((p[3] & 0x70) << 4) |
546 ((p[2] & 0x7f) << 1) |
547 (p[4] & 0x01);
548
549 f->x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) |
550 ((p[0] & 0x30) >> 4);
551 f->y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f);
552 f->z = p[5] & 0x7f;
553
554 alps_decode_buttons_v3(f, p);
555 }
556
557 static void alps_decode_rushmore(struct alps_fields *f, unsigned char *p,
558 struct psmouse *psmouse)
559 {
560 alps_decode_pinnacle(f, p, psmouse);
561
562 f->x_map |= (p[5] & 0x10) << 11;
563 f->y_map |= (p[5] & 0x20) << 6;
564 }
565
566 static void alps_decode_dolphin(struct alps_fields *f, unsigned char *p,
567 struct psmouse *psmouse)
568 {
569 u64 palm_data = 0;
570 struct alps_data *priv = psmouse->private;
571
572 f->first_mp = !!(p[0] & 0x02);
573 f->is_mp = !!(p[0] & 0x20);
574
575 if (!f->is_mp) {
576 f->x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7));
577 f->y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3));
578 f->z = (p[0] & 4) ? 0 : p[5] & 0x7f;
579 alps_decode_buttons_v3(f, p);
580 } else {
581 f->fingers = ((p[0] & 0x6) >> 1 |
582 (p[0] & 0x10) >> 2);
583
584 palm_data = (p[1] & 0x7f) |
585 ((p[2] & 0x7f) << 7) |
586 ((p[4] & 0x7f) << 14) |
587 ((p[5] & 0x7f) << 21) |
588 ((p[3] & 0x07) << 28) |
589 (((u64)p[3] & 0x70) << 27) |
590 (((u64)p[0] & 0x01) << 34);
591
592 /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */
593 f->y_map = palm_data & (BIT(priv->y_bits) - 1);
594
595 /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */
596 f->x_map = (palm_data >> priv->y_bits) &
597 (BIT(priv->x_bits) - 1);
598 }
599 }
600
601 static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse)
602 {
603 struct alps_data *priv = psmouse->private;
604 unsigned char *packet = psmouse->packet;
605 struct input_dev *dev = psmouse->dev;
606 struct input_dev *dev2 = priv->dev2;
607 int x1 = 0, y1 = 0, x2 = 0, y2 = 0;
608 int fingers = 0, bmap_fn;
609 struct alps_fields f = {0};
610
611 priv->decode_fields(&f, packet, psmouse);
612
613 /*
614 * There's no single feature of touchpad position and bitmap packets
615 * that can be used to distinguish between them. We rely on the fact
616 * that a bitmap packet should always follow a position packet with
617 * bit 6 of packet[4] set.
618 */
619 if (priv->multi_packet) {
620 /*
621 * Sometimes a position packet will indicate a multi-packet
622 * sequence, but then what follows is another position
623 * packet. Check for this, and when it happens process the
624 * position packet as usual.
625 */
626 if (f.is_mp) {
627 fingers = f.fingers;
628 if (priv->proto_version == ALPS_PROTO_V3) {
629 bmap_fn = alps_process_bitmap(priv, f.x_map,
630 f.y_map, &x1, &y1,
631 &x2, &y2);
632
633 /*
634 * We shouldn't report more than one finger if
635 * we don't have two coordinates.
636 */
637 if (fingers > 1 && bmap_fn < 2)
638 fingers = bmap_fn;
639
640 /* Now process position packet */
641 priv->decode_fields(&f, priv->multi_data,
642 psmouse);
643 } else {
644 /*
645 * Because Dolphin uses position packet's
646 * coordinate data as Pt1 and uses it to
647 * calculate Pt2, so we need to do position
648 * packet decode first.
649 */
650 priv->decode_fields(&f, priv->multi_data,
651 psmouse);
652
653 /*
654 * Since Dolphin's finger number is reliable,
655 * there is no need to compare with bmap_fn.
656 */
657 alps_process_bitmap_dolphin(priv, &f, &x1, &y1,
658 &x2, &y2);
659 }
660 } else {
661 priv->multi_packet = 0;
662 }
663 }
664
665 /*
666 * Bit 6 of byte 0 is not usually set in position packets. The only
667 * times it seems to be set is in situations where the data is
668 * suspect anyway, e.g. a palm resting flat on the touchpad. Given
669 * this combined with the fact that this bit is useful for filtering
670 * out misidentified bitmap packets, we reject anything with this
671 * bit set.
672 */
673 if (f.is_mp)
674 return;
675
676 if (!priv->multi_packet && f.first_mp) {
677 priv->multi_packet = 1;
678 memcpy(priv->multi_data, packet, sizeof(priv->multi_data));
679 return;
680 }
681
682 priv->multi_packet = 0;
683
684 /*
685 * Sometimes the hardware sends a single packet with z = 0
686 * in the middle of a stream. Real releases generate packets
687 * with x, y, and z all zero, so these seem to be flukes.
688 * Ignore them.
689 */
690 if (f.x && f.y && !f.z)
691 return;
692
693 /*
694 * If we don't have MT data or the bitmaps were empty, we have
695 * to rely on ST data.
696 */
697 if (!fingers) {
698 x1 = f.x;
699 y1 = f.y;
700 fingers = f.z > 0 ? 1 : 0;
701 }
702
703 if (f.z >= 64)
704 input_report_key(dev, BTN_TOUCH, 1);
705 else
706 input_report_key(dev, BTN_TOUCH, 0);
707
708 alps_report_semi_mt_data(dev, fingers, x1, y1, x2, y2);
709
710 input_mt_report_finger_count(dev, fingers);
711
712 input_report_key(dev, BTN_LEFT, f.left);
713 input_report_key(dev, BTN_RIGHT, f.right);
714 input_report_key(dev, BTN_MIDDLE, f.middle);
715
716 if (f.z > 0) {
717 input_report_abs(dev, ABS_X, f.x);
718 input_report_abs(dev, ABS_Y, f.y);
719 }
720 input_report_abs(dev, ABS_PRESSURE, f.z);
721
722 input_sync(dev);
723
724 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) {
725 input_report_key(dev2, BTN_LEFT, f.ts_left);
726 input_report_key(dev2, BTN_RIGHT, f.ts_right);
727 input_report_key(dev2, BTN_MIDDLE, f.ts_middle);
728 input_sync(dev2);
729 }
730 }
731
732 static void alps_process_packet_v3(struct psmouse *psmouse)
733 {
734 unsigned char *packet = psmouse->packet;
735
736 /*
737 * v3 protocol packets come in three types, two representing
738 * touchpad data and one representing trackstick data.
739 * Trackstick packets seem to be distinguished by always
740 * having 0x3f in the last byte. This value has never been
741 * observed in the last byte of either of the other types
742 * of packets.
743 */
744 if (packet[5] == 0x3f) {
745 alps_process_trackstick_packet_v3(psmouse);
746 return;
747 }
748
749 alps_process_touchpad_packet_v3_v5(psmouse);
750 }
751
752 static void alps_process_packet_v6(struct psmouse *psmouse)
753 {
754 struct alps_data *priv = psmouse->private;
755 unsigned char *packet = psmouse->packet;
756 struct input_dev *dev = psmouse->dev;
757 struct input_dev *dev2 = priv->dev2;
758 int x, y, z, left, right, middle;
759
760 /*
761 * We can use Byte5 to distinguish if the packet is from Touchpad
762 * or Trackpoint.
763 * Touchpad: 0 - 0x7E
764 * Trackpoint: 0x7F
765 */
766 if (packet[5] == 0x7F) {
767 /* It should be a DualPoint when received Trackpoint packet */
768 if (!(priv->flags & ALPS_DUALPOINT))
769 return;
770
771 /* Trackpoint packet */
772 x = packet[1] | ((packet[3] & 0x20) << 2);
773 y = packet[2] | ((packet[3] & 0x40) << 1);
774 z = packet[4];
775 left = packet[3] & 0x01;
776 right = packet[3] & 0x02;
777 middle = packet[3] & 0x04;
778
779 /* To prevent the cursor jump when finger lifted */
780 if (x == 0x7F && y == 0x7F && z == 0x7F)
781 x = y = z = 0;
782
783 /* Divide 4 since trackpoint's speed is too fast */
784 input_report_rel(dev2, REL_X, (char)x / 4);
785 input_report_rel(dev2, REL_Y, -((char)y / 4));
786
787 input_report_key(dev2, BTN_LEFT, left);
788 input_report_key(dev2, BTN_RIGHT, right);
789 input_report_key(dev2, BTN_MIDDLE, middle);
790
791 input_sync(dev2);
792 return;
793 }
794
795 /* Touchpad packet */
796 x = packet[1] | ((packet[3] & 0x78) << 4);
797 y = packet[2] | ((packet[4] & 0x78) << 4);
798 z = packet[5];
799 left = packet[3] & 0x01;
800 right = packet[3] & 0x02;
801
802 if (z > 30)
803 input_report_key(dev, BTN_TOUCH, 1);
804 if (z < 25)
805 input_report_key(dev, BTN_TOUCH, 0);
806
807 if (z > 0) {
808 input_report_abs(dev, ABS_X, x);
809 input_report_abs(dev, ABS_Y, y);
810 }
811
812 input_report_abs(dev, ABS_PRESSURE, z);
813 input_report_key(dev, BTN_TOOL_FINGER, z > 0);
814
815 /* v6 touchpad does not have middle button */
816 input_report_key(dev, BTN_LEFT, left);
817 input_report_key(dev, BTN_RIGHT, right);
818
819 input_sync(dev);
820 }
821
822 static void alps_process_packet_v4(struct psmouse *psmouse)
823 {
824 struct alps_data *priv = psmouse->private;
825 unsigned char *packet = psmouse->packet;
826 struct input_dev *dev = psmouse->dev;
827 int offset;
828 int x, y, z;
829 int left, right;
830 int x1, y1, x2, y2;
831 int fingers = 0;
832 unsigned int x_bitmap, y_bitmap;
833
834 /*
835 * v4 has a 6-byte encoding for bitmap data, but this data is
836 * broken up between 3 normal packets. Use priv->multi_packet to
837 * track our position in the bitmap packet.
838 */
839 if (packet[6] & 0x40) {
840 /* sync, reset position */
841 priv->multi_packet = 0;
842 }
843
844 if (WARN_ON_ONCE(priv->multi_packet > 2))
845 return;
846
847 offset = 2 * priv->multi_packet;
848 priv->multi_data[offset] = packet[6];
849 priv->multi_data[offset + 1] = packet[7];
850
851 if (++priv->multi_packet > 2) {
852 priv->multi_packet = 0;
853
854 x_bitmap = ((priv->multi_data[2] & 0x1f) << 10) |
855 ((priv->multi_data[3] & 0x60) << 3) |
856 ((priv->multi_data[0] & 0x3f) << 2) |
857 ((priv->multi_data[1] & 0x60) >> 5);
858 y_bitmap = ((priv->multi_data[5] & 0x01) << 10) |
859 ((priv->multi_data[3] & 0x1f) << 5) |
860 (priv->multi_data[1] & 0x1f);
861
862 fingers = alps_process_bitmap(priv, x_bitmap, y_bitmap,
863 &x1, &y1, &x2, &y2);
864
865 /* Store MT data.*/
866 priv->fingers = fingers;
867 priv->x1 = x1;
868 priv->x2 = x2;
869 priv->y1 = y1;
870 priv->y2 = y2;
871 }
872
873 left = packet[4] & 0x01;
874 right = packet[4] & 0x02;
875
876 x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) |
877 ((packet[0] & 0x30) >> 4);
878 y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f);
879 z = packet[5] & 0x7f;
880
881 /*
882 * If there were no contacts in the bitmap, use ST
883 * points in MT reports.
884 * If there were two contacts or more, report MT data.
885 */
886 if (priv->fingers < 2) {
887 x1 = x;
888 y1 = y;
889 fingers = z > 0 ? 1 : 0;
890 } else {
891 fingers = priv->fingers;
892 x1 = priv->x1;
893 x2 = priv->x2;
894 y1 = priv->y1;
895 y2 = priv->y2;
896 }
897
898 if (z >= 64)
899 input_report_key(dev, BTN_TOUCH, 1);
900 else
901 input_report_key(dev, BTN_TOUCH, 0);
902
903 alps_report_semi_mt_data(dev, fingers, x1, y1, x2, y2);
904
905 input_mt_report_finger_count(dev, fingers);
906
907 input_report_key(dev, BTN_LEFT, left);
908 input_report_key(dev, BTN_RIGHT, right);
909
910 if (z > 0) {
911 input_report_abs(dev, ABS_X, x);
912 input_report_abs(dev, ABS_Y, y);
913 }
914 input_report_abs(dev, ABS_PRESSURE, z);
915
916 input_sync(dev);
917 }
918
919 static void alps_report_bare_ps2_packet(struct psmouse *psmouse,
920 unsigned char packet[],
921 bool report_buttons)
922 {
923 struct alps_data *priv = psmouse->private;
924 struct input_dev *dev2 = priv->dev2;
925
926 if (report_buttons)
927 alps_report_buttons(psmouse, dev2, psmouse->dev,
928 packet[0] & 1, packet[0] & 2, packet[0] & 4);
929
930 input_report_rel(dev2, REL_X,
931 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0);
932 input_report_rel(dev2, REL_Y,
933 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0);
934
935 input_sync(dev2);
936 }
937
938 static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse)
939 {
940 struct alps_data *priv = psmouse->private;
941
942 if (psmouse->pktcnt < 6)
943 return PSMOUSE_GOOD_DATA;
944
945 if (psmouse->pktcnt == 6) {
946 /*
947 * Start a timer to flush the packet if it ends up last
948 * 6-byte packet in the stream. Timer needs to fire
949 * psmouse core times out itself. 20 ms should be enough
950 * to decide if we are getting more data or not.
951 */
952 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20));
953 return PSMOUSE_GOOD_DATA;
954 }
955
956 del_timer(&priv->timer);
957
958 if (psmouse->packet[6] & 0x80) {
959
960 /*
961 * Highest bit is set - that means we either had
962 * complete ALPS packet and this is start of the
963 * next packet or we got garbage.
964 */
965
966 if (((psmouse->packet[3] |
967 psmouse->packet[4] |
968 psmouse->packet[5]) & 0x80) ||
969 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) {
970 psmouse_dbg(psmouse,
971 "refusing packet %4ph (suspected interleaved ps/2)\n",
972 psmouse->packet + 3);
973 return PSMOUSE_BAD_DATA;
974 }
975
976 priv->process_packet(psmouse);
977
978 /* Continue with the next packet */
979 psmouse->packet[0] = psmouse->packet[6];
980 psmouse->pktcnt = 1;
981
982 } else {
983
984 /*
985 * High bit is 0 - that means that we indeed got a PS/2
986 * packet in the middle of ALPS packet.
987 *
988 * There is also possibility that we got 6-byte ALPS
989 * packet followed by 3-byte packet from trackpoint. We
990 * can not distinguish between these 2 scenarios but
991 * because the latter is unlikely to happen in course of
992 * normal operation (user would need to press all
993 * buttons on the pad and start moving trackpoint
994 * without touching the pad surface) we assume former.
995 * Even if we are wrong the wost thing that would happen
996 * the cursor would jump but we should not get protocol
997 * de-synchronization.
998 */
999
1000 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3],
1001 false);
1002
1003 /*
1004 * Continue with the standard ALPS protocol handling,
1005 * but make sure we won't process it as an interleaved
1006 * packet again, which may happen if all buttons are
1007 * pressed. To avoid this let's reset the 4th bit which
1008 * is normally 1.
1009 */
1010 psmouse->packet[3] = psmouse->packet[6] & 0xf7;
1011 psmouse->pktcnt = 4;
1012 }
1013
1014 return PSMOUSE_GOOD_DATA;
1015 }
1016
1017 static void alps_flush_packet(unsigned long data)
1018 {
1019 struct psmouse *psmouse = (struct psmouse *)data;
1020 struct alps_data *priv = psmouse->private;
1021
1022 serio_pause_rx(psmouse->ps2dev.serio);
1023
1024 if (psmouse->pktcnt == psmouse->pktsize) {
1025
1026 /*
1027 * We did not any more data in reasonable amount of time.
1028 * Validate the last 3 bytes and process as a standard
1029 * ALPS packet.
1030 */
1031 if ((psmouse->packet[3] |
1032 psmouse->packet[4] |
1033 psmouse->packet[5]) & 0x80) {
1034 psmouse_dbg(psmouse,
1035 "refusing packet %3ph (suspected interleaved ps/2)\n",
1036 psmouse->packet + 3);
1037 } else {
1038 priv->process_packet(psmouse);
1039 }
1040 psmouse->pktcnt = 0;
1041 }
1042
1043 serio_continue_rx(psmouse->ps2dev.serio);
1044 }
1045
1046 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
1047 {
1048 struct alps_data *priv = psmouse->private;
1049
1050 if ((psmouse->packet[0] & 0xc8) == 0x08) { /* PS/2 packet */
1051 if (psmouse->pktcnt == 3) {
1052 alps_report_bare_ps2_packet(psmouse, psmouse->packet,
1053 true);
1054 return PSMOUSE_FULL_PACKET;
1055 }
1056 return PSMOUSE_GOOD_DATA;
1057 }
1058
1059 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */
1060
1061 if ((priv->flags & ALPS_PS2_INTERLEAVED) &&
1062 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) {
1063 return alps_handle_interleaved_ps2(psmouse);
1064 }
1065
1066 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) {
1067 psmouse_dbg(psmouse,
1068 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n",
1069 psmouse->packet[0], priv->mask0, priv->byte0);
1070 return PSMOUSE_BAD_DATA;
1071 }
1072
1073 /* Bytes 2 - pktsize should have 0 in the highest bit */
1074 if ((priv->proto_version < ALPS_PROTO_V5) &&
1075 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize &&
1076 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) {
1077 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
1078 psmouse->pktcnt - 1,
1079 psmouse->packet[psmouse->pktcnt - 1]);
1080 return PSMOUSE_BAD_DATA;
1081 }
1082
1083 if (psmouse->pktcnt == psmouse->pktsize) {
1084 priv->process_packet(psmouse);
1085 return PSMOUSE_FULL_PACKET;
1086 }
1087
1088 return PSMOUSE_GOOD_DATA;
1089 }
1090
1091 static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble)
1092 {
1093 struct ps2dev *ps2dev = &psmouse->ps2dev;
1094 struct alps_data *priv = psmouse->private;
1095 int command;
1096 unsigned char *param;
1097 unsigned char dummy[4];
1098
1099 BUG_ON(nibble > 0xf);
1100
1101 command = priv->nibble_commands[nibble].command;
1102 param = (command & 0x0f00) ?
1103 dummy : (unsigned char *)&priv->nibble_commands[nibble].data;
1104
1105 if (ps2_command(ps2dev, param, command))
1106 return -1;
1107
1108 return 0;
1109 }
1110
1111 static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr)
1112 {
1113 struct ps2dev *ps2dev = &psmouse->ps2dev;
1114 struct alps_data *priv = psmouse->private;
1115 int i, nibble;
1116
1117 if (ps2_command(ps2dev, NULL, priv->addr_command))
1118 return -1;
1119
1120 for (i = 12; i >= 0; i -= 4) {
1121 nibble = (addr >> i) & 0xf;
1122 if (alps_command_mode_send_nibble(psmouse, nibble))
1123 return -1;
1124 }
1125
1126 return 0;
1127 }
1128
1129 static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
1130 {
1131 struct ps2dev *ps2dev = &psmouse->ps2dev;
1132 unsigned char param[4];
1133
1134 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1135 return -1;
1136
1137 /*
1138 * The address being read is returned in the first two bytes
1139 * of the result. Check that this address matches the expected
1140 * address.
1141 */
1142 if (addr != ((param[0] << 8) | param[1]))
1143 return -1;
1144
1145 return param[2];
1146 }
1147
1148 static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
1149 {
1150 if (alps_command_mode_set_addr(psmouse, addr))
1151 return -1;
1152 return __alps_command_mode_read_reg(psmouse, addr);
1153 }
1154
1155 static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value)
1156 {
1157 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf))
1158 return -1;
1159 if (alps_command_mode_send_nibble(psmouse, value & 0xf))
1160 return -1;
1161 return 0;
1162 }
1163
1164 static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr,
1165 u8 value)
1166 {
1167 if (alps_command_mode_set_addr(psmouse, addr))
1168 return -1;
1169 return __alps_command_mode_write_reg(psmouse, value);
1170 }
1171
1172 static int alps_rpt_cmd(struct psmouse *psmouse, int init_command,
1173 int repeated_command, unsigned char *param)
1174 {
1175 struct ps2dev *ps2dev = &psmouse->ps2dev;
1176
1177 param[0] = 0;
1178 if (init_command && ps2_command(ps2dev, param, init_command))
1179 return -EIO;
1180
1181 if (ps2_command(ps2dev, NULL, repeated_command) ||
1182 ps2_command(ps2dev, NULL, repeated_command) ||
1183 ps2_command(ps2dev, NULL, repeated_command))
1184 return -EIO;
1185
1186 param[0] = param[1] = param[2] = 0xff;
1187 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1188 return -EIO;
1189
1190 psmouse_dbg(psmouse, "%2.2X report: %3ph\n",
1191 repeated_command, param);
1192 return 0;
1193 }
1194
1195 static int alps_enter_command_mode(struct psmouse *psmouse)
1196 {
1197 unsigned char param[4];
1198
1199 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) {
1200 psmouse_err(psmouse, "failed to enter command mode\n");
1201 return -1;
1202 }
1203
1204 if ((param[0] != 0x88 || (param[1] != 0x07 && param[1] != 0x08)) &&
1205 param[0] != 0x73) {
1206 psmouse_dbg(psmouse,
1207 "unknown response while entering command mode\n");
1208 return -1;
1209 }
1210 return 0;
1211 }
1212
1213 static inline int alps_exit_command_mode(struct psmouse *psmouse)
1214 {
1215 struct ps2dev *ps2dev = &psmouse->ps2dev;
1216 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM))
1217 return -1;
1218 return 0;
1219 }
1220
1221 /*
1222 * For DualPoint devices select the device that should respond to
1223 * subsequent commands. It looks like glidepad is behind stickpointer,
1224 * I'd thought it would be other way around...
1225 */
1226 static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable)
1227 {
1228 struct ps2dev *ps2dev = &psmouse->ps2dev;
1229 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11;
1230
1231 if (ps2_command(ps2dev, NULL, cmd) ||
1232 ps2_command(ps2dev, NULL, cmd) ||
1233 ps2_command(ps2dev, NULL, cmd) ||
1234 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1235 return -1;
1236
1237 /* we may get 3 more bytes, just ignore them */
1238 ps2_drain(ps2dev, 3, 100);
1239
1240 return 0;
1241 }
1242
1243 static int alps_absolute_mode_v1_v2(struct psmouse *psmouse)
1244 {
1245 struct ps2dev *ps2dev = &psmouse->ps2dev;
1246
1247 /* Try ALPS magic knock - 4 disable before enable */
1248 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1249 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1250 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1251 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1252 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE))
1253 return -1;
1254
1255 /*
1256 * Switch mouse to poll (remote) mode so motion data will not
1257 * get in our way
1258 */
1259 return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL);
1260 }
1261
1262 static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word)
1263 {
1264 int i, nibble;
1265
1266 /*
1267 * b0-b11 are valid bits, send sequence is inverse.
1268 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1
1269 */
1270 for (i = 0; i <= 8; i += 4) {
1271 nibble = (word >> i) & 0xf;
1272 if (alps_command_mode_send_nibble(psmouse, nibble))
1273 return -1;
1274 }
1275
1276 return 0;
1277 }
1278
1279 static int alps_monitor_mode_write_reg(struct psmouse *psmouse,
1280 u16 addr, u16 value)
1281 {
1282 struct ps2dev *ps2dev = &psmouse->ps2dev;
1283
1284 /* 0x0A0 is the command to write the word */
1285 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) ||
1286 alps_monitor_mode_send_word(psmouse, 0x0A0) ||
1287 alps_monitor_mode_send_word(psmouse, addr) ||
1288 alps_monitor_mode_send_word(psmouse, value) ||
1289 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1290 return -1;
1291
1292 return 0;
1293 }
1294
1295 static int alps_monitor_mode(struct psmouse *psmouse, bool enable)
1296 {
1297 struct ps2dev *ps2dev = &psmouse->ps2dev;
1298
1299 if (enable) {
1300 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */
1301 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
1302 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) ||
1303 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1304 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1305 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
1306 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1307 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
1308 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO))
1309 return -1;
1310 } else {
1311 /* EC to exit monitor mode */
1312 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP))
1313 return -1;
1314 }
1315
1316 return 0;
1317 }
1318
1319 static int alps_absolute_mode_v6(struct psmouse *psmouse)
1320 {
1321 u16 reg_val = 0x181;
1322 int ret = -1;
1323
1324 /* enter monitor mode, to write the register */
1325 if (alps_monitor_mode(psmouse, true))
1326 return -1;
1327
1328 ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val);
1329
1330 if (alps_monitor_mode(psmouse, false))
1331 ret = -1;
1332
1333 return ret;
1334 }
1335
1336 static int alps_get_status(struct psmouse *psmouse, char *param)
1337 {
1338 /* Get status: 0xF5 0xF5 0xF5 0xE9 */
1339 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param))
1340 return -1;
1341
1342 return 0;
1343 }
1344
1345 /*
1346 * Turn touchpad tapping on or off. The sequences are:
1347 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable,
1348 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable.
1349 * My guess that 0xE9 (GetInfo) is here as a sync point.
1350 * For models that also have stickpointer (DualPoints) its tapping
1351 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but
1352 * we don't fiddle with it.
1353 */
1354 static int alps_tap_mode(struct psmouse *psmouse, int enable)
1355 {
1356 struct ps2dev *ps2dev = &psmouse->ps2dev;
1357 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES;
1358 unsigned char tap_arg = enable ? 0x0A : 0x00;
1359 unsigned char param[4];
1360
1361 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) ||
1362 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1363 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1364 ps2_command(ps2dev, &tap_arg, cmd))
1365 return -1;
1366
1367 if (alps_get_status(psmouse, param))
1368 return -1;
1369
1370 return 0;
1371 }
1372
1373 /*
1374 * alps_poll() - poll the touchpad for current motion packet.
1375 * Used in resync.
1376 */
1377 static int alps_poll(struct psmouse *psmouse)
1378 {
1379 struct alps_data *priv = psmouse->private;
1380 unsigned char buf[sizeof(psmouse->packet)];
1381 bool poll_failed;
1382
1383 if (priv->flags & ALPS_PASS)
1384 alps_passthrough_mode_v2(psmouse, true);
1385
1386 poll_failed = ps2_command(&psmouse->ps2dev, buf,
1387 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0;
1388
1389 if (priv->flags & ALPS_PASS)
1390 alps_passthrough_mode_v2(psmouse, false);
1391
1392 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0)
1393 return -1;
1394
1395 if ((psmouse->badbyte & 0xc8) == 0x08) {
1396 /*
1397 * Poll the track stick ...
1398 */
1399 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8)))
1400 return -1;
1401 }
1402
1403 memcpy(psmouse->packet, buf, sizeof(buf));
1404 return 0;
1405 }
1406
1407 static int alps_hw_init_v1_v2(struct psmouse *psmouse)
1408 {
1409 struct alps_data *priv = psmouse->private;
1410
1411 if ((priv->flags & ALPS_PASS) &&
1412 alps_passthrough_mode_v2(psmouse, true)) {
1413 return -1;
1414 }
1415
1416 if (alps_tap_mode(psmouse, true)) {
1417 psmouse_warn(psmouse, "Failed to enable hardware tapping\n");
1418 return -1;
1419 }
1420
1421 if (alps_absolute_mode_v1_v2(psmouse)) {
1422 psmouse_err(psmouse, "Failed to enable absolute mode\n");
1423 return -1;
1424 }
1425
1426 if ((priv->flags & ALPS_PASS) &&
1427 alps_passthrough_mode_v2(psmouse, false)) {
1428 return -1;
1429 }
1430
1431 /* ALPS needs stream mode, otherwise it won't report any data */
1432 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) {
1433 psmouse_err(psmouse, "Failed to enable stream mode\n");
1434 return -1;
1435 }
1436
1437 return 0;
1438 }
1439
1440 static int alps_hw_init_v6(struct psmouse *psmouse)
1441 {
1442 unsigned char param[2] = {0xC8, 0x14};
1443
1444 /* Enter passthrough mode to let trackpoint enter 6byte raw mode */
1445 if (alps_passthrough_mode_v2(psmouse, true))
1446 return -1;
1447
1448 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1449 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1450 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1451 ps2_command(&psmouse->ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
1452 ps2_command(&psmouse->ps2dev, &param[1], PSMOUSE_CMD_SETRATE))
1453 return -1;
1454
1455 if (alps_passthrough_mode_v2(psmouse, false))
1456 return -1;
1457
1458 if (alps_absolute_mode_v6(psmouse)) {
1459 psmouse_err(psmouse, "Failed to enable absolute mode\n");
1460 return -1;
1461 }
1462
1463 return 0;
1464 }
1465
1466 /*
1467 * Enable or disable passthrough mode to the trackstick.
1468 */
1469 static int alps_passthrough_mode_v3(struct psmouse *psmouse,
1470 int reg_base, bool enable)
1471 {
1472 int reg_val, ret = -1;
1473
1474 if (alps_enter_command_mode(psmouse))
1475 return -1;
1476
1477 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008);
1478 if (reg_val == -1)
1479 goto error;
1480
1481 if (enable)
1482 reg_val |= 0x01;
1483 else
1484 reg_val &= ~0x01;
1485
1486 ret = __alps_command_mode_write_reg(psmouse, reg_val);
1487
1488 error:
1489 if (alps_exit_command_mode(psmouse))
1490 ret = -1;
1491 return ret;
1492 }
1493
1494 /* Must be in command mode when calling this function */
1495 static int alps_absolute_mode_v3(struct psmouse *psmouse)
1496 {
1497 int reg_val;
1498
1499 reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
1500 if (reg_val == -1)
1501 return -1;
1502
1503 reg_val |= 0x06;
1504 if (__alps_command_mode_write_reg(psmouse, reg_val))
1505 return -1;
1506
1507 return 0;
1508 }
1509
1510 static int alps_probe_trackstick_v3(struct psmouse *psmouse, int reg_base)
1511 {
1512 int ret = -EIO, reg_val;
1513
1514 if (alps_enter_command_mode(psmouse))
1515 goto error;
1516
1517 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08);
1518 if (reg_val == -1)
1519 goto error;
1520
1521 /* bit 7: trackstick is present */
1522 ret = reg_val & 0x80 ? 0 : -ENODEV;
1523
1524 error:
1525 alps_exit_command_mode(psmouse);
1526 return ret;
1527 }
1528
1529 static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base)
1530 {
1531 struct ps2dev *ps2dev = &psmouse->ps2dev;
1532 int ret = 0;
1533 unsigned char param[4];
1534
1535 if (alps_passthrough_mode_v3(psmouse, reg_base, true))
1536 return -EIO;
1537
1538 /*
1539 * E7 report for the trackstick
1540 *
1541 * There have been reports of failures to seem to trace back
1542 * to the above trackstick check failing. When these occur
1543 * this E7 report fails, so when that happens we continue
1544 * with the assumption that there isn't a trackstick after
1545 * all.
1546 */
1547 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) {
1548 psmouse_warn(psmouse, "trackstick E7 report failed\n");
1549 ret = -ENODEV;
1550 } else {
1551 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param);
1552
1553 /*
1554 * Not sure what this does, but it is absolutely
1555 * essential. Without it, the touchpad does not
1556 * work at all and the trackstick just emits normal
1557 * PS/2 packets.
1558 */
1559 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1560 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1561 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1562 alps_command_mode_send_nibble(psmouse, 0x9) ||
1563 alps_command_mode_send_nibble(psmouse, 0x4)) {
1564 psmouse_err(psmouse,
1565 "Error sending magic E6 sequence\n");
1566 ret = -EIO;
1567 goto error;
1568 }
1569
1570 /*
1571 * This ensures the trackstick packets are in the format
1572 * supported by this driver. If bit 1 isn't set the packet
1573 * format is different.
1574 */
1575 if (alps_enter_command_mode(psmouse) ||
1576 alps_command_mode_write_reg(psmouse,
1577 reg_base + 0x08, 0x82) ||
1578 alps_exit_command_mode(psmouse))
1579 ret = -EIO;
1580 }
1581
1582 error:
1583 if (alps_passthrough_mode_v3(psmouse, reg_base, false))
1584 ret = -EIO;
1585
1586 return ret;
1587 }
1588
1589 static int alps_hw_init_v3(struct psmouse *psmouse)
1590 {
1591 struct ps2dev *ps2dev = &psmouse->ps2dev;
1592 int reg_val;
1593 unsigned char param[4];
1594
1595 reg_val = alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE);
1596 if (reg_val == -EIO)
1597 goto error;
1598
1599 if (reg_val == 0 &&
1600 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO)
1601 goto error;
1602
1603 if (alps_enter_command_mode(psmouse) ||
1604 alps_absolute_mode_v3(psmouse)) {
1605 psmouse_err(psmouse, "Failed to enter absolute mode\n");
1606 goto error;
1607 }
1608
1609 reg_val = alps_command_mode_read_reg(psmouse, 0x0006);
1610 if (reg_val == -1)
1611 goto error;
1612 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
1613 goto error;
1614
1615 reg_val = alps_command_mode_read_reg(psmouse, 0x0007);
1616 if (reg_val == -1)
1617 goto error;
1618 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
1619 goto error;
1620
1621 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1)
1622 goto error;
1623 if (__alps_command_mode_write_reg(psmouse, 0x04))
1624 goto error;
1625
1626 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1)
1627 goto error;
1628 if (__alps_command_mode_write_reg(psmouse, 0x03))
1629 goto error;
1630
1631 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1)
1632 goto error;
1633 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03))
1634 goto error;
1635
1636 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1)
1637 goto error;
1638 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04))
1639 goto error;
1640
1641 alps_exit_command_mode(psmouse);
1642
1643 /* Set rate and enable data reporting */
1644 param[0] = 0x64;
1645 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
1646 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
1647 psmouse_err(psmouse, "Failed to enable data reporting\n");
1648 return -1;
1649 }
1650
1651 return 0;
1652
1653 error:
1654 /*
1655 * Leaving the touchpad in command mode will essentially render
1656 * it unusable until the machine reboots, so exit it here just
1657 * to be safe
1658 */
1659 alps_exit_command_mode(psmouse);
1660 return -1;
1661 }
1662
1663 static int alps_hw_init_rushmore_v3(struct psmouse *psmouse)
1664 {
1665 struct alps_data *priv = psmouse->private;
1666 struct ps2dev *ps2dev = &psmouse->ps2dev;
1667 int reg_val, ret = -1;
1668
1669 if (priv->flags & ALPS_DUALPOINT) {
1670 reg_val = alps_setup_trackstick_v3(psmouse,
1671 ALPS_REG_BASE_RUSHMORE);
1672 if (reg_val == -EIO)
1673 goto error;
1674 if (reg_val == -ENODEV)
1675 priv->flags &= ~ALPS_DUALPOINT;
1676 }
1677
1678 if (alps_enter_command_mode(psmouse) ||
1679 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 ||
1680 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00))
1681 goto error;
1682
1683 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6);
1684 if (reg_val == -1)
1685 goto error;
1686 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd))
1687 goto error;
1688
1689 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64))
1690 goto error;
1691
1692 /* enter absolute mode */
1693 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4);
1694 if (reg_val == -1)
1695 goto error;
1696 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02))
1697 goto error;
1698
1699 alps_exit_command_mode(psmouse);
1700 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
1701
1702 error:
1703 alps_exit_command_mode(psmouse);
1704 return ret;
1705 }
1706
1707 /* Must be in command mode when calling this function */
1708 static int alps_absolute_mode_v4(struct psmouse *psmouse)
1709 {
1710 int reg_val;
1711
1712 reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
1713 if (reg_val == -1)
1714 return -1;
1715
1716 reg_val |= 0x02;
1717 if (__alps_command_mode_write_reg(psmouse, reg_val))
1718 return -1;
1719
1720 return 0;
1721 }
1722
1723 static int alps_hw_init_v4(struct psmouse *psmouse)
1724 {
1725 struct ps2dev *ps2dev = &psmouse->ps2dev;
1726 unsigned char param[4];
1727
1728 if (alps_enter_command_mode(psmouse))
1729 goto error;
1730
1731 if (alps_absolute_mode_v4(psmouse)) {
1732 psmouse_err(psmouse, "Failed to enter absolute mode\n");
1733 goto error;
1734 }
1735
1736 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c))
1737 goto error;
1738
1739 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03))
1740 goto error;
1741
1742 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03))
1743 goto error;
1744
1745 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15))
1746 goto error;
1747
1748 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01))
1749 goto error;
1750
1751 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03))
1752 goto error;
1753
1754 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03))
1755 goto error;
1756
1757 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03))
1758 goto error;
1759
1760 alps_exit_command_mode(psmouse);
1761
1762 /*
1763 * This sequence changes the output from a 9-byte to an
1764 * 8-byte format. All the same data seems to be present,
1765 * just in a more compact format.
1766 */
1767 param[0] = 0xc8;
1768 param[1] = 0x64;
1769 param[2] = 0x50;
1770 if (ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
1771 ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE) ||
1772 ps2_command(ps2dev, &param[2], PSMOUSE_CMD_SETRATE) ||
1773 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID))
1774 return -1;
1775
1776 /* Set rate and enable data reporting */
1777 param[0] = 0x64;
1778 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
1779 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
1780 psmouse_err(psmouse, "Failed to enable data reporting\n");
1781 return -1;
1782 }
1783
1784 return 0;
1785
1786 error:
1787 /*
1788 * Leaving the touchpad in command mode will essentially render
1789 * it unusable until the machine reboots, so exit it here just
1790 * to be safe
1791 */
1792 alps_exit_command_mode(psmouse);
1793 return -1;
1794 }
1795
1796 static int alps_dolphin_get_device_area(struct psmouse *psmouse,
1797 struct alps_data *priv)
1798 {
1799 struct ps2dev *ps2dev = &psmouse->ps2dev;
1800 unsigned char param[4] = {0};
1801 int num_x_electrode, num_y_electrode;
1802
1803 if (alps_enter_command_mode(psmouse))
1804 return -1;
1805
1806 param[0] = 0x0a;
1807 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
1808 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
1809 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
1810 ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
1811 ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE))
1812 return -1;
1813
1814 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1815 return -1;
1816
1817 /*
1818 * Dolphin's sensor line number is not fixed. It can be calculated
1819 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET.
1820 * Further more, we can get device's x_max and y_max by multiplying
1821 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE.
1822 *
1823 * e.g. When we get register's sensor_x = 11 & sensor_y = 8,
1824 * real sensor line number X = 11 + 8 = 19, and
1825 * real sensor line number Y = 8 + 1 = 9.
1826 * So, x_max = (19 - 1) * 64 = 1152, and
1827 * y_max = (9 - 1) * 64 = 512.
1828 */
1829 num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F);
1830 num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F);
1831 priv->x_bits = num_x_electrode;
1832 priv->y_bits = num_y_electrode;
1833 priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE;
1834 priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE;
1835
1836 if (alps_exit_command_mode(psmouse))
1837 return -1;
1838
1839 return 0;
1840 }
1841
1842 static int alps_hw_init_dolphin_v1(struct psmouse *psmouse)
1843 {
1844 struct ps2dev *ps2dev = &psmouse->ps2dev;
1845 unsigned char param[2];
1846
1847 /* This is dolphin "v1" as empirically defined by florin9doi */
1848 param[0] = 0x64;
1849 param[1] = 0x28;
1850
1851 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
1852 ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
1853 ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE))
1854 return -1;
1855
1856 return 0;
1857 }
1858
1859 static void alps_set_defaults(struct alps_data *priv)
1860 {
1861 priv->byte0 = 0x8f;
1862 priv->mask0 = 0x8f;
1863 priv->flags = ALPS_DUALPOINT;
1864
1865 priv->x_max = 2000;
1866 priv->y_max = 1400;
1867 priv->x_bits = 15;
1868 priv->y_bits = 11;
1869
1870 switch (priv->proto_version) {
1871 case ALPS_PROTO_V1:
1872 case ALPS_PROTO_V2:
1873 priv->hw_init = alps_hw_init_v1_v2;
1874 priv->process_packet = alps_process_packet_v1_v2;
1875 priv->set_abs_params = alps_set_abs_params_st;
1876 priv->x_max = 1023;
1877 priv->y_max = 767;
1878 break;
1879 case ALPS_PROTO_V3:
1880 priv->hw_init = alps_hw_init_v3;
1881 priv->process_packet = alps_process_packet_v3;
1882 priv->set_abs_params = alps_set_abs_params_mt;
1883 priv->decode_fields = alps_decode_pinnacle;
1884 priv->nibble_commands = alps_v3_nibble_commands;
1885 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
1886 break;
1887 case ALPS_PROTO_V4:
1888 priv->hw_init = alps_hw_init_v4;
1889 priv->process_packet = alps_process_packet_v4;
1890 priv->set_abs_params = alps_set_abs_params_mt;
1891 priv->nibble_commands = alps_v4_nibble_commands;
1892 priv->addr_command = PSMOUSE_CMD_DISABLE;
1893 break;
1894 case ALPS_PROTO_V5:
1895 priv->hw_init = alps_hw_init_dolphin_v1;
1896 priv->process_packet = alps_process_touchpad_packet_v3_v5;
1897 priv->decode_fields = alps_decode_dolphin;
1898 priv->set_abs_params = alps_set_abs_params_mt;
1899 priv->nibble_commands = alps_v3_nibble_commands;
1900 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
1901 priv->byte0 = 0xc8;
1902 priv->mask0 = 0xd8;
1903 priv->flags = 0;
1904 priv->x_max = 1360;
1905 priv->y_max = 660;
1906 priv->x_bits = 23;
1907 priv->y_bits = 12;
1908 break;
1909 case ALPS_PROTO_V6:
1910 priv->hw_init = alps_hw_init_v6;
1911 priv->process_packet = alps_process_packet_v6;
1912 priv->set_abs_params = alps_set_abs_params_st;
1913 priv->nibble_commands = alps_v6_nibble_commands;
1914 priv->x_max = 2047;
1915 priv->y_max = 1535;
1916 break;
1917 }
1918 }
1919
1920 static int alps_match_table(struct psmouse *psmouse, struct alps_data *priv,
1921 unsigned char *e7, unsigned char *ec)
1922 {
1923 const struct alps_model_info *model;
1924 int i;
1925
1926 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) {
1927 model = &alps_model_data[i];
1928
1929 if (!memcmp(e7, model->signature, sizeof(model->signature)) &&
1930 (!model->command_mode_resp ||
1931 model->command_mode_resp == ec[2])) {
1932
1933 priv->proto_version = model->proto_version;
1934 alps_set_defaults(priv);
1935
1936 priv->flags = model->flags;
1937 priv->byte0 = model->byte0;
1938 priv->mask0 = model->mask0;
1939
1940 return 0;
1941 }
1942 }
1943
1944 return -EINVAL;
1945 }
1946
1947 static int alps_identify(struct psmouse *psmouse, struct alps_data *priv)
1948 {
1949 unsigned char e6[4], e7[4], ec[4];
1950
1951 /*
1952 * First try "E6 report".
1953 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed.
1954 * The bits 0-2 of the first byte will be 1s if some buttons are
1955 * pressed.
1956 */
1957 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
1958 PSMOUSE_CMD_SETSCALE11, e6))
1959 return -EIO;
1960
1961 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100))
1962 return -EINVAL;
1963
1964 /*
1965 * Now get the "E7" and "EC" reports. These will uniquely identify
1966 * most ALPS touchpads.
1967 */
1968 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
1969 PSMOUSE_CMD_SETSCALE21, e7) ||
1970 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
1971 PSMOUSE_CMD_RESET_WRAP, ec) ||
1972 alps_exit_command_mode(psmouse))
1973 return -EIO;
1974
1975 if (alps_match_table(psmouse, priv, e7, ec) == 0) {
1976 return 0;
1977 } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 &&
1978 ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) {
1979 priv->proto_version = ALPS_PROTO_V5;
1980 alps_set_defaults(priv);
1981 if (alps_dolphin_get_device_area(psmouse, priv))
1982 return -EIO;
1983 else
1984 return 0;
1985 } else if (ec[0] == 0x88 && ec[1] == 0x08) {
1986 priv->proto_version = ALPS_PROTO_V3;
1987 alps_set_defaults(priv);
1988
1989 priv->hw_init = alps_hw_init_rushmore_v3;
1990 priv->decode_fields = alps_decode_rushmore;
1991 priv->x_bits = 16;
1992 priv->y_bits = 12;
1993
1994 /* hack to make addr_command, nibble_command available */
1995 psmouse->private = priv;
1996
1997 if (alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_RUSHMORE))
1998 priv->flags &= ~ALPS_DUALPOINT;
1999
2000 return 0;
2001 } else if (ec[0] == 0x88 && ec[1] == 0x07 &&
2002 ec[2] >= 0x90 && ec[2] <= 0x9d) {
2003 priv->proto_version = ALPS_PROTO_V3;
2004 alps_set_defaults(priv);
2005
2006 return 0;
2007 }
2008
2009 psmouse_info(psmouse,
2010 "Unknown ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec);
2011
2012 return -EINVAL;
2013 }
2014
2015 static int alps_reconnect(struct psmouse *psmouse)
2016 {
2017 struct alps_data *priv = psmouse->private;
2018
2019 psmouse_reset(psmouse);
2020
2021 if (alps_identify(psmouse, priv) < 0)
2022 return -1;
2023
2024 return priv->hw_init(psmouse);
2025 }
2026
2027 static void alps_disconnect(struct psmouse *psmouse)
2028 {
2029 struct alps_data *priv = psmouse->private;
2030
2031 psmouse_reset(psmouse);
2032 del_timer_sync(&priv->timer);
2033 input_unregister_device(priv->dev2);
2034 kfree(priv);
2035 }
2036
2037 static void alps_set_abs_params_st(struct alps_data *priv,
2038 struct input_dev *dev1)
2039 {
2040 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0);
2041 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0);
2042 }
2043
2044 static void alps_set_abs_params_mt(struct alps_data *priv,
2045 struct input_dev *dev1)
2046 {
2047 set_bit(INPUT_PROP_SEMI_MT, dev1->propbit);
2048 input_mt_init_slots(dev1, 2, 0);
2049 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0);
2050 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0);
2051
2052 set_bit(BTN_TOOL_DOUBLETAP, dev1->keybit);
2053 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit);
2054 set_bit(BTN_TOOL_QUADTAP, dev1->keybit);
2055
2056 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0);
2057 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0);
2058 }
2059
2060 int alps_init(struct psmouse *psmouse)
2061 {
2062 struct alps_data *priv;
2063 struct input_dev *dev1 = psmouse->dev, *dev2;
2064
2065 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL);
2066 dev2 = input_allocate_device();
2067 if (!priv || !dev2)
2068 goto init_fail;
2069
2070 priv->dev2 = dev2;
2071 setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse);
2072
2073 psmouse->private = priv;
2074
2075 psmouse_reset(psmouse);
2076
2077 if (alps_identify(psmouse, priv) < 0)
2078 goto init_fail;
2079
2080 if (priv->hw_init(psmouse))
2081 goto init_fail;
2082
2083 /*
2084 * Undo part of setup done for us by psmouse core since touchpad
2085 * is not a relative device.
2086 */
2087 __clear_bit(EV_REL, dev1->evbit);
2088 __clear_bit(REL_X, dev1->relbit);
2089 __clear_bit(REL_Y, dev1->relbit);
2090
2091 /*
2092 * Now set up our capabilities.
2093 */
2094 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY);
2095 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH);
2096 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER);
2097 dev1->keybit[BIT_WORD(BTN_LEFT)] |=
2098 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
2099
2100 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS);
2101
2102 priv->set_abs_params(priv, dev1);
2103 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
2104
2105 if (priv->flags & ALPS_WHEEL) {
2106 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL);
2107 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL);
2108 }
2109
2110 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
2111 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD);
2112 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK);
2113 }
2114
2115 if (priv->flags & ALPS_FOUR_BUTTONS) {
2116 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0);
2117 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1);
2118 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2);
2119 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3);
2120 } else {
2121 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE);
2122 }
2123
2124 snprintf(priv->phys, sizeof(priv->phys), "%s/input1", psmouse->ps2dev.serio->phys);
2125 dev2->phys = priv->phys;
2126 dev2->name = (priv->flags & ALPS_DUALPOINT) ?
2127 "DualPoint Stick" : "ALPS PS/2 Device";
2128 dev2->id.bustype = BUS_I8042;
2129 dev2->id.vendor = 0x0002;
2130 dev2->id.product = PSMOUSE_ALPS;
2131 dev2->id.version = 0x0000;
2132 dev2->dev.parent = &psmouse->ps2dev.serio->dev;
2133
2134 dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
2135 dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
2136 dev2->keybit[BIT_WORD(BTN_LEFT)] =
2137 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
2138
2139 if (input_register_device(priv->dev2))
2140 goto init_fail;
2141
2142 psmouse->protocol_handler = alps_process_byte;
2143 psmouse->poll = alps_poll;
2144 psmouse->disconnect = alps_disconnect;
2145 psmouse->reconnect = alps_reconnect;
2146 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6;
2147
2148 /* We are having trouble resyncing ALPS touchpads so disable it for now */
2149 psmouse->resync_time = 0;
2150
2151 return 0;
2152
2153 init_fail:
2154 psmouse_reset(psmouse);
2155 input_free_device(dev2);
2156 kfree(priv);
2157 psmouse->private = NULL;
2158 return -1;
2159 }
2160
2161 int alps_detect(struct psmouse *psmouse, bool set_properties)
2162 {
2163 struct alps_data dummy;
2164
2165 if (alps_identify(psmouse, &dummy) < 0)
2166 return -1;
2167
2168 if (set_properties) {
2169 psmouse->vendor = "ALPS";
2170 psmouse->name = dummy.flags & ALPS_DUALPOINT ?
2171 "DualPoint TouchPad" : "GlidePoint";
2172 psmouse->model = dummy.proto_version << 8;
2173 }
2174 return 0;
2175 }
2176
Linux with added FPC-III support