Merge tag 'xtensa-for-next-20141021-2' of git://github.com/jcmvbkbc/linux-xtensa...
[cascardo/linux.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
24 #include "psmouse.h"
25 #include "alps.h"
26
27 /*
28  * Definitions for ALPS version 3 and 4 command mode protocol
29  */
30 #define ALPS_CMD_NIBBLE_10      0x01f2
31
32 #define ALPS_REG_BASE_RUSHMORE  0xc2c0
33 #define ALPS_REG_BASE_PINNACLE  0x0000
34
35 static const struct alps_nibble_commands alps_v3_nibble_commands[] = {
36         { PSMOUSE_CMD_SETPOLL,          0x00 }, /* 0 */
37         { PSMOUSE_CMD_RESET_DIS,        0x00 }, /* 1 */
38         { PSMOUSE_CMD_SETSCALE21,       0x00 }, /* 2 */
39         { PSMOUSE_CMD_SETRATE,          0x0a }, /* 3 */
40         { PSMOUSE_CMD_SETRATE,          0x14 }, /* 4 */
41         { PSMOUSE_CMD_SETRATE,          0x28 }, /* 5 */
42         { PSMOUSE_CMD_SETRATE,          0x3c }, /* 6 */
43         { PSMOUSE_CMD_SETRATE,          0x50 }, /* 7 */
44         { PSMOUSE_CMD_SETRATE,          0x64 }, /* 8 */
45         { PSMOUSE_CMD_SETRATE,          0xc8 }, /* 9 */
46         { ALPS_CMD_NIBBLE_10,           0x00 }, /* a */
47         { PSMOUSE_CMD_SETRES,           0x00 }, /* b */
48         { PSMOUSE_CMD_SETRES,           0x01 }, /* c */
49         { PSMOUSE_CMD_SETRES,           0x02 }, /* d */
50         { PSMOUSE_CMD_SETRES,           0x03 }, /* e */
51         { PSMOUSE_CMD_SETSCALE11,       0x00 }, /* f */
52 };
53
54 static const struct alps_nibble_commands alps_v4_nibble_commands[] = {
55         { PSMOUSE_CMD_ENABLE,           0x00 }, /* 0 */
56         { PSMOUSE_CMD_RESET_DIS,        0x00 }, /* 1 */
57         { PSMOUSE_CMD_SETSCALE21,       0x00 }, /* 2 */
58         { PSMOUSE_CMD_SETRATE,          0x0a }, /* 3 */
59         { PSMOUSE_CMD_SETRATE,          0x14 }, /* 4 */
60         { PSMOUSE_CMD_SETRATE,          0x28 }, /* 5 */
61         { PSMOUSE_CMD_SETRATE,          0x3c }, /* 6 */
62         { PSMOUSE_CMD_SETRATE,          0x50 }, /* 7 */
63         { PSMOUSE_CMD_SETRATE,          0x64 }, /* 8 */
64         { PSMOUSE_CMD_SETRATE,          0xc8 }, /* 9 */
65         { ALPS_CMD_NIBBLE_10,           0x00 }, /* a */
66         { PSMOUSE_CMD_SETRES,           0x00 }, /* b */
67         { PSMOUSE_CMD_SETRES,           0x01 }, /* c */
68         { PSMOUSE_CMD_SETRES,           0x02 }, /* d */
69         { PSMOUSE_CMD_SETRES,           0x03 }, /* e */
70         { PSMOUSE_CMD_SETSCALE11,       0x00 }, /* f */
71 };
72
73 static const struct alps_nibble_commands alps_v6_nibble_commands[] = {
74         { PSMOUSE_CMD_ENABLE,           0x00 }, /* 0 */
75         { PSMOUSE_CMD_SETRATE,          0x0a }, /* 1 */
76         { PSMOUSE_CMD_SETRATE,          0x14 }, /* 2 */
77         { PSMOUSE_CMD_SETRATE,          0x28 }, /* 3 */
78         { PSMOUSE_CMD_SETRATE,          0x3c }, /* 4 */
79         { PSMOUSE_CMD_SETRATE,          0x50 }, /* 5 */
80         { PSMOUSE_CMD_SETRATE,          0x64 }, /* 6 */
81         { PSMOUSE_CMD_SETRATE,          0xc8 }, /* 7 */
82         { PSMOUSE_CMD_GETID,            0x00 }, /* 8 */
83         { PSMOUSE_CMD_GETINFO,          0x00 }, /* 9 */
84         { PSMOUSE_CMD_SETRES,           0x00 }, /* a */
85         { PSMOUSE_CMD_SETRES,           0x01 }, /* b */
86         { PSMOUSE_CMD_SETRES,           0x02 }, /* c */
87         { PSMOUSE_CMD_SETRES,           0x03 }, /* d */
88         { PSMOUSE_CMD_SETSCALE21,       0x00 }, /* e */
89         { PSMOUSE_CMD_SETSCALE11,       0x00 }, /* f */
90 };
91
92
93 #define ALPS_DUALPOINT          0x02    /* touchpad has trackstick */
94 #define ALPS_PASS               0x04    /* device has a pass-through port */
95
96 #define ALPS_WHEEL              0x08    /* hardware wheel present */
97 #define ALPS_FW_BK_1            0x10    /* front & back buttons present */
98 #define ALPS_FW_BK_2            0x20    /* front & back buttons present */
99 #define ALPS_FOUR_BUTTONS       0x40    /* 4 direction button present */
100 #define ALPS_PS2_INTERLEAVED    0x80    /* 3-byte PS/2 packet interleaved with
101                                            6-byte ALPS packet */
102 #define ALPS_IS_RUSHMORE        0x100   /* device is a rushmore */
103 #define ALPS_BUTTONPAD          0x200   /* device is a clickpad */
104
105 static const struct alps_model_info alps_model_data[] = {
106         { { 0x32, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT },  /* Toshiba Salellite Pro M10 */
107         { { 0x33, 0x02, 0x0a }, 0x00, ALPS_PROTO_V1, 0x88, 0xf8, 0 },                           /* UMAX-530T */
108         { { 0x53, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
109         { { 0x53, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
110         { { 0x60, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },                           /* HP ze1115 */
111         { { 0x63, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
112         { { 0x63, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
113         { { 0x63, 0x02, 0x28 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 },                /* Fujitsu Siemens S6010 */
114         { { 0x63, 0x02, 0x3c }, 0x00, ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL },                  /* Toshiba Satellite S2400-103 */
115         { { 0x63, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 },                /* NEC Versa L320 */
116         { { 0x63, 0x02, 0x64 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
117         { { 0x63, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT },  /* Dell Latitude D800 */
118         { { 0x73, 0x00, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT },              /* ThinkPad R61 8918-5QG */
119         { { 0x73, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
120         { { 0x73, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 },                /* Ahtec Laptop */
121         { { 0x20, 0x02, 0x0e }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT },  /* XXX */
122         { { 0x22, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT },
123         { { 0x22, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT },  /* Dell Latitude D600 */
124         /* Dell Latitude E5500, E6400, E6500, Precision M4400 */
125         { { 0x62, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf,
126                 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED },
127         { { 0x73, 0x00, 0x14 }, 0x00, ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT },              /* Dell XT2 */
128         { { 0x73, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS },           /* Dell Vostro 1400 */
129         { { 0x52, 0x01, 0x14 }, 0x00, ALPS_PROTO_V2, 0xff, 0xff,
130                 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED },                            /* Toshiba Tecra A11-11L */
131         { { 0x73, 0x02, 0x64 }, 0x8a, ALPS_PROTO_V4, 0x8f, 0x8f, 0 },
132 };
133
134 static void alps_set_abs_params_st(struct alps_data *priv,
135                                    struct input_dev *dev1);
136 static void alps_set_abs_params_mt(struct alps_data *priv,
137                                    struct input_dev *dev1);
138
139 /*
140  * XXX - this entry is suspicious. First byte has zero lower nibble,
141  * which is what a normal mouse would report. Also, the value 0x0e
142  * isn't valid per PS/2 spec.
143  */
144
145 /* Packet formats are described in Documentation/input/alps.txt */
146
147 static bool alps_is_valid_first_byte(struct alps_data *priv,
148                                      unsigned char data)
149 {
150         return (data & priv->mask0) == priv->byte0;
151 }
152
153 static void alps_report_buttons(struct psmouse *psmouse,
154                                 struct input_dev *dev1, struct input_dev *dev2,
155                                 int left, int right, int middle)
156 {
157         struct input_dev *dev;
158
159         /*
160          * If shared button has already been reported on the
161          * other device (dev2) then this event should be also
162          * sent through that device.
163          */
164         dev = test_bit(BTN_LEFT, dev2->key) ? dev2 : dev1;
165         input_report_key(dev, BTN_LEFT, left);
166
167         dev = test_bit(BTN_RIGHT, dev2->key) ? dev2 : dev1;
168         input_report_key(dev, BTN_RIGHT, right);
169
170         dev = test_bit(BTN_MIDDLE, dev2->key) ? dev2 : dev1;
171         input_report_key(dev, BTN_MIDDLE, middle);
172
173         /*
174          * Sync the _other_ device now, we'll do the first
175          * device later once we report the rest of the events.
176          */
177         input_sync(dev2);
178 }
179
180 static void alps_process_packet_v1_v2(struct psmouse *psmouse)
181 {
182         struct alps_data *priv = psmouse->private;
183         unsigned char *packet = psmouse->packet;
184         struct input_dev *dev = psmouse->dev;
185         struct input_dev *dev2 = priv->dev2;
186         int x, y, z, ges, fin, left, right, middle;
187         int back = 0, forward = 0;
188
189         if (priv->proto_version == ALPS_PROTO_V1) {
190                 left = packet[2] & 0x10;
191                 right = packet[2] & 0x08;
192                 middle = 0;
193                 x = packet[1] | ((packet[0] & 0x07) << 7);
194                 y = packet[4] | ((packet[3] & 0x07) << 7);
195                 z = packet[5];
196         } else {
197                 left = packet[3] & 1;
198                 right = packet[3] & 2;
199                 middle = packet[3] & 4;
200                 x = packet[1] | ((packet[2] & 0x78) << (7 - 3));
201                 y = packet[4] | ((packet[3] & 0x70) << (7 - 4));
202                 z = packet[5];
203         }
204
205         if (priv->flags & ALPS_FW_BK_1) {
206                 back = packet[0] & 0x10;
207                 forward = packet[2] & 4;
208         }
209
210         if (priv->flags & ALPS_FW_BK_2) {
211                 back = packet[3] & 4;
212                 forward = packet[2] & 4;
213                 if ((middle = forward && back))
214                         forward = back = 0;
215         }
216
217         ges = packet[2] & 1;
218         fin = packet[2] & 2;
219
220         if ((priv->flags & ALPS_DUALPOINT) && z == 127) {
221                 input_report_rel(dev2, REL_X,  (x > 383 ? (x - 768) : x));
222                 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y));
223
224                 alps_report_buttons(psmouse, dev2, dev, left, right, middle);
225
226                 input_sync(dev2);
227                 return;
228         }
229
230         alps_report_buttons(psmouse, dev, dev2, left, right, middle);
231
232         /* Convert hardware tap to a reasonable Z value */
233         if (ges && !fin)
234                 z = 40;
235
236         /*
237          * A "tap and drag" operation is reported by the hardware as a transition
238          * from (!fin && ges) to (fin && ges). This should be translated to the
239          * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually.
240          */
241         if (ges && fin && !priv->prev_fin) {
242                 input_report_abs(dev, ABS_X, x);
243                 input_report_abs(dev, ABS_Y, y);
244                 input_report_abs(dev, ABS_PRESSURE, 0);
245                 input_report_key(dev, BTN_TOOL_FINGER, 0);
246                 input_sync(dev);
247         }
248         priv->prev_fin = fin;
249
250         if (z > 30)
251                 input_report_key(dev, BTN_TOUCH, 1);
252         if (z < 25)
253                 input_report_key(dev, BTN_TOUCH, 0);
254
255         if (z > 0) {
256                 input_report_abs(dev, ABS_X, x);
257                 input_report_abs(dev, ABS_Y, y);
258         }
259
260         input_report_abs(dev, ABS_PRESSURE, z);
261         input_report_key(dev, BTN_TOOL_FINGER, z > 0);
262
263         if (priv->flags & ALPS_WHEEL)
264                 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07));
265
266         if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
267                 input_report_key(dev, BTN_FORWARD, forward);
268                 input_report_key(dev, BTN_BACK, back);
269         }
270
271         if (priv->flags & ALPS_FOUR_BUTTONS) {
272                 input_report_key(dev, BTN_0, packet[2] & 4);
273                 input_report_key(dev, BTN_1, packet[0] & 0x10);
274                 input_report_key(dev, BTN_2, packet[3] & 4);
275                 input_report_key(dev, BTN_3, packet[0] & 0x20);
276         }
277
278         input_sync(dev);
279 }
280
281 /*
282  * Process bitmap data for V5 protocols. Return value is null.
283  *
284  * The bitmaps don't have enough data to track fingers, so this function
285  * only generates points representing a bounding box of at most two contacts.
286  * These two points are returned in fields->mt.
287  */
288 static void alps_process_bitmap_dolphin(struct alps_data *priv,
289                                         struct alps_fields *fields)
290 {
291         int box_middle_x, box_middle_y;
292         unsigned int x_map, y_map;
293         unsigned char start_bit, end_bit;
294         unsigned char x_msb, x_lsb, y_msb, y_lsb;
295
296         x_map = fields->x_map;
297         y_map = fields->y_map;
298
299         if (!x_map || !y_map)
300                 return;
301
302         /* Get Most-significant and Least-significant bit */
303         x_msb = fls(x_map);
304         x_lsb = ffs(x_map);
305         y_msb = fls(y_map);
306         y_lsb = ffs(y_map);
307
308         /* Most-significant bit should never exceed max sensor line number */
309         if (x_msb > priv->x_bits || y_msb > priv->y_bits)
310                 return;
311
312         if (fields->fingers > 1) {
313                 start_bit = priv->x_bits - x_msb;
314                 end_bit = priv->x_bits - x_lsb;
315                 box_middle_x = (priv->x_max * (start_bit + end_bit)) /
316                                 (2 * (priv->x_bits - 1));
317
318                 start_bit = y_lsb - 1;
319                 end_bit = y_msb - 1;
320                 box_middle_y = (priv->y_max * (start_bit + end_bit)) /
321                                 (2 * (priv->y_bits - 1));
322                 fields->mt[0] = fields->st;
323                 fields->mt[1].x = 2 * box_middle_x - fields->mt[0].x;
324                 fields->mt[1].y = 2 * box_middle_y - fields->mt[0].y;
325         }
326 }
327
328 static void alps_get_bitmap_points(unsigned int map,
329                                    struct alps_bitmap_point *low,
330                                    struct alps_bitmap_point *high,
331                                    int *fingers)
332 {
333         struct alps_bitmap_point *point;
334         int i, bit, prev_bit = 0;
335
336         point = low;
337         for (i = 0; map != 0; i++, map >>= 1) {
338                 bit = map & 1;
339                 if (bit) {
340                         if (!prev_bit) {
341                                 point->start_bit = i;
342                                 point->num_bits = 0;
343                                 (*fingers)++;
344                         }
345                         point->num_bits++;
346                 } else {
347                         if (prev_bit)
348                                 point = high;
349                 }
350                 prev_bit = bit;
351         }
352 }
353
354 /*
355  * Process bitmap data from v3 and v4 protocols. Returns the number of
356  * fingers detected. A return value of 0 means at least one of the
357  * bitmaps was empty.
358  *
359  * The bitmaps don't have enough data to track fingers, so this function
360  * only generates points representing a bounding box of all contacts.
361  * These points are returned in fields->mt when the return value
362  * is greater than 0.
363  */
364 static int alps_process_bitmap(struct alps_data *priv,
365                                struct alps_fields *fields)
366 {
367         int i, fingers_x = 0, fingers_y = 0, fingers;
368         struct alps_bitmap_point x_low = {0,}, x_high = {0,};
369         struct alps_bitmap_point y_low = {0,}, y_high = {0,};
370
371         if (!fields->x_map || !fields->y_map)
372                 return 0;
373
374         alps_get_bitmap_points(fields->x_map, &x_low, &x_high, &fingers_x);
375         alps_get_bitmap_points(fields->y_map, &y_low, &y_high, &fingers_y);
376
377         /*
378          * Fingers can overlap, so we use the maximum count of fingers
379          * on either axis as the finger count.
380          */
381         fingers = max(fingers_x, fingers_y);
382
383         /*
384          * If an axis reports only a single contact, we have overlapping or
385          * adjacent fingers. Divide the single contact between the two points.
386          */
387         if (fingers_x == 1) {
388                 i = (x_low.num_bits - 1) / 2;
389                 x_low.num_bits = x_low.num_bits - i;
390                 x_high.start_bit = x_low.start_bit + i;
391                 x_high.num_bits = max(i, 1);
392         }
393         if (fingers_y == 1) {
394                 i = (y_low.num_bits - 1) / 2;
395                 y_low.num_bits = y_low.num_bits - i;
396                 y_high.start_bit = y_low.start_bit + i;
397                 y_high.num_bits = max(i, 1);
398         }
399
400         fields->mt[0].x =
401                 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) /
402                 (2 * (priv->x_bits - 1));
403         fields->mt[0].y =
404                 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) /
405                 (2 * (priv->y_bits - 1));
406
407         fields->mt[1].x =
408                 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) /
409                 (2 * (priv->x_bits - 1));
410         fields->mt[1].y =
411                 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) /
412                 (2 * (priv->y_bits - 1));
413
414         /* y-bitmap order is reversed, except on rushmore */
415         if (!(priv->flags & ALPS_IS_RUSHMORE)) {
416                 fields->mt[0].y = priv->y_max - fields->mt[0].y;
417                 fields->mt[1].y = priv->y_max - fields->mt[1].y;
418         }
419
420         return fingers;
421 }
422
423 static void alps_set_slot(struct input_dev *dev, int slot, int x, int y)
424 {
425         input_mt_slot(dev, slot);
426         input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
427         input_report_abs(dev, ABS_MT_POSITION_X, x);
428         input_report_abs(dev, ABS_MT_POSITION_Y, y);
429 }
430
431 static void alps_report_mt_data(struct psmouse *psmouse, int n)
432 {
433         struct alps_data *priv = psmouse->private;
434         struct input_dev *dev = psmouse->dev;
435         struct alps_fields *f = &priv->f;
436         int i, slot[MAX_TOUCHES];
437
438         input_mt_assign_slots(dev, slot, f->mt, n);
439         for (i = 0; i < n; i++)
440                 alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y);
441
442         input_mt_sync_frame(dev);
443 }
444
445 static void alps_report_semi_mt_data(struct psmouse *psmouse, int fingers)
446 {
447         struct alps_data *priv = psmouse->private;
448         struct input_dev *dev = psmouse->dev;
449         struct alps_fields *f = &priv->f;
450
451         /* Use st data when we don't have mt data */
452         if (fingers < 2) {
453                 f->mt[0].x = f->st.x;
454                 f->mt[0].y = f->st.y;
455                 fingers = f->pressure > 0 ? 1 : 0;
456         }
457
458         alps_report_mt_data(psmouse, (fingers <= 2) ? fingers : 2);
459
460         input_mt_report_finger_count(dev, fingers);
461
462         input_report_key(dev, BTN_LEFT, f->left);
463         input_report_key(dev, BTN_RIGHT, f->right);
464         input_report_key(dev, BTN_MIDDLE, f->middle);
465
466         input_report_abs(dev, ABS_PRESSURE, f->pressure);
467
468         input_sync(dev);
469 }
470
471 static void alps_process_trackstick_packet_v3(struct psmouse *psmouse)
472 {
473         struct alps_data *priv = psmouse->private;
474         unsigned char *packet = psmouse->packet;
475         struct input_dev *dev = priv->dev2;
476         int x, y, z, left, right, middle;
477
478         /* Sanity check packet */
479         if (!(packet[0] & 0x40)) {
480                 psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n");
481                 return;
482         }
483
484         /*
485          * There's a special packet that seems to indicate the end
486          * of a stream of trackstick data. Filter these out.
487          */
488         if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f)
489                 return;
490
491         x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f));
492         y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f));
493         z = (packet[4] & 0x7c) >> 2;
494
495         /*
496          * The x and y values tend to be quite large, and when used
497          * alone the trackstick is difficult to use. Scale them down
498          * to compensate.
499          */
500         x /= 8;
501         y /= 8;
502
503         input_report_rel(dev, REL_X, x);
504         input_report_rel(dev, REL_Y, -y);
505
506         /*
507          * Most ALPS models report the trackstick buttons in the touchpad
508          * packets, but a few report them here. No reliable way has been
509          * found to differentiate between the models upfront, so we enable
510          * the quirk in response to seeing a button press in the trackstick
511          * packet.
512          */
513         left = packet[3] & 0x01;
514         right = packet[3] & 0x02;
515         middle = packet[3] & 0x04;
516
517         if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) &&
518             (left || right || middle))
519                 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS;
520
521         if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) {
522                 input_report_key(dev, BTN_LEFT, left);
523                 input_report_key(dev, BTN_RIGHT, right);
524                 input_report_key(dev, BTN_MIDDLE, middle);
525         }
526
527         input_sync(dev);
528         return;
529 }
530
531 static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p)
532 {
533         f->left = !!(p[3] & 0x01);
534         f->right = !!(p[3] & 0x02);
535         f->middle = !!(p[3] & 0x04);
536
537         f->ts_left = !!(p[3] & 0x10);
538         f->ts_right = !!(p[3] & 0x20);
539         f->ts_middle = !!(p[3] & 0x40);
540 }
541
542 static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p,
543                                  struct psmouse *psmouse)
544 {
545         f->first_mp = !!(p[4] & 0x40);
546         f->is_mp = !!(p[0] & 0x40);
547
548         f->fingers = (p[5] & 0x3) + 1;
549         f->x_map = ((p[4] & 0x7e) << 8) |
550                    ((p[1] & 0x7f) << 2) |
551                    ((p[0] & 0x30) >> 4);
552         f->y_map = ((p[3] & 0x70) << 4) |
553                    ((p[2] & 0x7f) << 1) |
554                    (p[4] & 0x01);
555
556         f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) |
557                ((p[0] & 0x30) >> 4);
558         f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f);
559         f->pressure = p[5] & 0x7f;
560
561         alps_decode_buttons_v3(f, p);
562
563         return 0;
564 }
565
566 static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p,
567                                  struct psmouse *psmouse)
568 {
569         alps_decode_pinnacle(f, p, psmouse);
570
571         /* Rushmore's packet decode has a bit difference with Pinnacle's */
572         f->is_mp = !!(p[5] & 0x40);
573         f->fingers = max((p[5] & 0x3), ((p[5] >> 2) & 0x3)) + 1;
574         f->x_map |= (p[5] & 0x10) << 11;
575         f->y_map |= (p[5] & 0x20) << 6;
576
577         return 0;
578 }
579
580 static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p,
581                                 struct psmouse *psmouse)
582 {
583         u64 palm_data = 0;
584         struct alps_data *priv = psmouse->private;
585
586         f->first_mp = !!(p[0] & 0x02);
587         f->is_mp = !!(p[0] & 0x20);
588
589         if (!f->is_mp) {
590                 f->st.x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7));
591                 f->st.y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3));
592                 f->pressure = (p[0] & 4) ? 0 : p[5] & 0x7f;
593                 alps_decode_buttons_v3(f, p);
594         } else {
595                 f->fingers = ((p[0] & 0x6) >> 1 |
596                      (p[0] & 0x10) >> 2);
597
598                 palm_data = (p[1] & 0x7f) |
599                             ((p[2] & 0x7f) << 7) |
600                             ((p[4] & 0x7f) << 14) |
601                             ((p[5] & 0x7f) << 21) |
602                             ((p[3] & 0x07) << 28) |
603                             (((u64)p[3] & 0x70) << 27) |
604                             (((u64)p[0] & 0x01) << 34);
605
606                 /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */
607                 f->y_map = palm_data & (BIT(priv->y_bits) - 1);
608
609                 /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */
610                 f->x_map = (palm_data >> priv->y_bits) &
611                            (BIT(priv->x_bits) - 1);
612         }
613
614         return 0;
615 }
616
617 static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse)
618 {
619         struct alps_data *priv = psmouse->private;
620         unsigned char *packet = psmouse->packet;
621         struct input_dev *dev2 = priv->dev2;
622         struct alps_fields *f = &priv->f;
623         int fingers = 0;
624
625         memset(f, 0, sizeof(*f));
626
627         priv->decode_fields(f, packet, psmouse);
628
629         /*
630          * There's no single feature of touchpad position and bitmap packets
631          * that can be used to distinguish between them. We rely on the fact
632          * that a bitmap packet should always follow a position packet with
633          * bit 6 of packet[4] set.
634          */
635         if (priv->multi_packet) {
636                 /*
637                  * Sometimes a position packet will indicate a multi-packet
638                  * sequence, but then what follows is another position
639                  * packet. Check for this, and when it happens process the
640                  * position packet as usual.
641                  */
642                 if (f->is_mp) {
643                         fingers = f->fingers;
644                         if (priv->proto_version == ALPS_PROTO_V3) {
645                                 if (alps_process_bitmap(priv, f) == 0)
646                                         fingers = 0; /* Use st data */
647
648                                 /* Now process position packet */
649                                 priv->decode_fields(f, priv->multi_data,
650                                                     psmouse);
651                         } else {
652                                 /*
653                                  * Because Dolphin uses position packet's
654                                  * coordinate data as Pt1 and uses it to
655                                  * calculate Pt2, so we need to do position
656                                  * packet decode first.
657                                  */
658                                 priv->decode_fields(f, priv->multi_data,
659                                                     psmouse);
660
661                                 /*
662                                  * Since Dolphin's finger number is reliable,
663                                  * there is no need to compare with bmap_fn.
664                                  */
665                                 alps_process_bitmap_dolphin(priv, f);
666                         }
667                 } else {
668                         priv->multi_packet = 0;
669                 }
670         }
671
672         /*
673          * Bit 6 of byte 0 is not usually set in position packets. The only
674          * times it seems to be set is in situations where the data is
675          * suspect anyway, e.g. a palm resting flat on the touchpad. Given
676          * this combined with the fact that this bit is useful for filtering
677          * out misidentified bitmap packets, we reject anything with this
678          * bit set.
679          */
680         if (f->is_mp)
681                 return;
682
683         if (!priv->multi_packet && f->first_mp) {
684                 priv->multi_packet = 1;
685                 memcpy(priv->multi_data, packet, sizeof(priv->multi_data));
686                 return;
687         }
688
689         priv->multi_packet = 0;
690
691         /*
692          * Sometimes the hardware sends a single packet with z = 0
693          * in the middle of a stream. Real releases generate packets
694          * with x, y, and z all zero, so these seem to be flukes.
695          * Ignore them.
696          */
697         if (f->st.x && f->st.y && !f->pressure)
698                 return;
699
700         alps_report_semi_mt_data(psmouse, fingers);
701
702         if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) {
703                 input_report_key(dev2, BTN_LEFT, f->ts_left);
704                 input_report_key(dev2, BTN_RIGHT, f->ts_right);
705                 input_report_key(dev2, BTN_MIDDLE, f->ts_middle);
706                 input_sync(dev2);
707         }
708 }
709
710 static void alps_process_packet_v3(struct psmouse *psmouse)
711 {
712         unsigned char *packet = psmouse->packet;
713
714         /*
715          * v3 protocol packets come in three types, two representing
716          * touchpad data and one representing trackstick data.
717          * Trackstick packets seem to be distinguished by always
718          * having 0x3f in the last byte. This value has never been
719          * observed in the last byte of either of the other types
720          * of packets.
721          */
722         if (packet[5] == 0x3f) {
723                 alps_process_trackstick_packet_v3(psmouse);
724                 return;
725         }
726
727         alps_process_touchpad_packet_v3_v5(psmouse);
728 }
729
730 static void alps_process_packet_v6(struct psmouse *psmouse)
731 {
732         struct alps_data *priv = psmouse->private;
733         unsigned char *packet = psmouse->packet;
734         struct input_dev *dev = psmouse->dev;
735         struct input_dev *dev2 = priv->dev2;
736         int x, y, z, left, right, middle;
737
738         /*
739          * We can use Byte5 to distinguish if the packet is from Touchpad
740          * or Trackpoint.
741          * Touchpad:    0 - 0x7E
742          * Trackpoint:  0x7F
743          */
744         if (packet[5] == 0x7F) {
745                 /* It should be a DualPoint when received Trackpoint packet */
746                 if (!(priv->flags & ALPS_DUALPOINT))
747                         return;
748
749                 /* Trackpoint packet */
750                 x = packet[1] | ((packet[3] & 0x20) << 2);
751                 y = packet[2] | ((packet[3] & 0x40) << 1);
752                 z = packet[4];
753                 left = packet[3] & 0x01;
754                 right = packet[3] & 0x02;
755                 middle = packet[3] & 0x04;
756
757                 /* To prevent the cursor jump when finger lifted */
758                 if (x == 0x7F && y == 0x7F && z == 0x7F)
759                         x = y = z = 0;
760
761                 /* Divide 4 since trackpoint's speed is too fast */
762                 input_report_rel(dev2, REL_X, (char)x / 4);
763                 input_report_rel(dev2, REL_Y, -((char)y / 4));
764
765                 input_report_key(dev2, BTN_LEFT, left);
766                 input_report_key(dev2, BTN_RIGHT, right);
767                 input_report_key(dev2, BTN_MIDDLE, middle);
768
769                 input_sync(dev2);
770                 return;
771         }
772
773         /* Touchpad packet */
774         x = packet[1] | ((packet[3] & 0x78) << 4);
775         y = packet[2] | ((packet[4] & 0x78) << 4);
776         z = packet[5];
777         left = packet[3] & 0x01;
778         right = packet[3] & 0x02;
779
780         if (z > 30)
781                 input_report_key(dev, BTN_TOUCH, 1);
782         if (z < 25)
783                 input_report_key(dev, BTN_TOUCH, 0);
784
785         if (z > 0) {
786                 input_report_abs(dev, ABS_X, x);
787                 input_report_abs(dev, ABS_Y, y);
788         }
789
790         input_report_abs(dev, ABS_PRESSURE, z);
791         input_report_key(dev, BTN_TOOL_FINGER, z > 0);
792
793         /* v6 touchpad does not have middle button */
794         input_report_key(dev, BTN_LEFT, left);
795         input_report_key(dev, BTN_RIGHT, right);
796
797         input_sync(dev);
798 }
799
800 static void alps_process_packet_v4(struct psmouse *psmouse)
801 {
802         struct alps_data *priv = psmouse->private;
803         unsigned char *packet = psmouse->packet;
804         struct alps_fields *f = &priv->f;
805         int offset;
806
807         /*
808          * v4 has a 6-byte encoding for bitmap data, but this data is
809          * broken up between 3 normal packets. Use priv->multi_packet to
810          * track our position in the bitmap packet.
811          */
812         if (packet[6] & 0x40) {
813                 /* sync, reset position */
814                 priv->multi_packet = 0;
815         }
816
817         if (WARN_ON_ONCE(priv->multi_packet > 2))
818                 return;
819
820         offset = 2 * priv->multi_packet;
821         priv->multi_data[offset] = packet[6];
822         priv->multi_data[offset + 1] = packet[7];
823
824         if (++priv->multi_packet > 2) {
825                 priv->multi_packet = 0;
826
827                 f->x_map = ((priv->multi_data[2] & 0x1f) << 10) |
828                            ((priv->multi_data[3] & 0x60) << 3) |
829                            ((priv->multi_data[0] & 0x3f) << 2) |
830                            ((priv->multi_data[1] & 0x60) >> 5);
831                 f->y_map = ((priv->multi_data[5] & 0x01) << 10) |
832                            ((priv->multi_data[3] & 0x1f) << 5) |
833                             (priv->multi_data[1] & 0x1f);
834
835                 f->fingers = alps_process_bitmap(priv, f);
836         }
837
838         f->left = !!(packet[4] & 0x01);
839         f->right = !!(packet[4] & 0x02);
840
841         f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) |
842                   ((packet[0] & 0x30) >> 4);
843         f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f);
844         f->pressure = packet[5] & 0x7f;
845
846         alps_report_semi_mt_data(psmouse, f->fingers);
847 }
848
849 static bool alps_is_valid_package_v7(struct psmouse *psmouse)
850 {
851         switch (psmouse->pktcnt) {
852         case 3:
853                 return (psmouse->packet[2] & 0x40) == 0x40;
854         case 4:
855                 return (psmouse->packet[3] & 0x48) == 0x48;
856         case 6:
857                 return (psmouse->packet[5] & 0x40) == 0x00;
858         }
859         return true;
860 }
861
862 static unsigned char alps_get_packet_id_v7(char *byte)
863 {
864         unsigned char packet_id;
865
866         if (byte[4] & 0x40)
867                 packet_id = V7_PACKET_ID_TWO;
868         else if (byte[4] & 0x01)
869                 packet_id = V7_PACKET_ID_MULTI;
870         else if ((byte[0] & 0x10) && !(byte[4] & 0x43))
871                 packet_id = V7_PACKET_ID_NEW;
872         else if (byte[1] == 0x00 && byte[4] == 0x00)
873                 packet_id = V7_PACKET_ID_IDLE;
874         else
875                 packet_id = V7_PACKET_ID_UNKNOWN;
876
877         return packet_id;
878 }
879
880 static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt,
881                                           unsigned char *pkt,
882                                           unsigned char pkt_id)
883 {
884         mt[0].x = ((pkt[2] & 0x80) << 4);
885         mt[0].x |= ((pkt[2] & 0x3F) << 5);
886         mt[0].x |= ((pkt[3] & 0x30) >> 1);
887         mt[0].x |= (pkt[3] & 0x07);
888         mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07);
889
890         mt[1].x = ((pkt[3] & 0x80) << 4);
891         mt[1].x |= ((pkt[4] & 0x80) << 3);
892         mt[1].x |= ((pkt[4] & 0x3F) << 4);
893         mt[1].y = ((pkt[5] & 0x80) << 3);
894         mt[1].y |= ((pkt[5] & 0x3F) << 4);
895
896         switch (pkt_id) {
897         case V7_PACKET_ID_TWO:
898                 mt[1].x &= ~0x000F;
899                 mt[1].y |= 0x000F;
900                 break;
901
902         case V7_PACKET_ID_MULTI:
903                 mt[1].x &= ~0x003F;
904                 mt[1].y &= ~0x0020;
905                 mt[1].y |= ((pkt[4] & 0x02) << 4);
906                 mt[1].y |= 0x001F;
907                 break;
908
909         case V7_PACKET_ID_NEW:
910                 mt[1].x &= ~0x003F;
911                 mt[1].x |= (pkt[0] & 0x20);
912                 mt[1].y |= 0x000F;
913                 break;
914         }
915
916         mt[0].y = 0x7FF - mt[0].y;
917         mt[1].y = 0x7FF - mt[1].y;
918 }
919
920 static int alps_get_mt_count(struct input_mt_pos *mt)
921 {
922         int i;
923
924         for (i = 0; i < MAX_TOUCHES && mt[i].x != 0 && mt[i].y != 0; i++)
925                 /* empty */;
926
927         return i;
928 }
929
930 static int alps_decode_packet_v7(struct alps_fields *f,
931                                   unsigned char *p,
932                                   struct psmouse *psmouse)
933 {
934         unsigned char pkt_id;
935
936         pkt_id = alps_get_packet_id_v7(p);
937         if (pkt_id == V7_PACKET_ID_IDLE)
938                 return 0;
939         if (pkt_id == V7_PACKET_ID_UNKNOWN)
940                 return -1;
941
942         alps_get_finger_coordinate_v7(f->mt, p, pkt_id);
943
944         if (pkt_id == V7_PACKET_ID_TWO || pkt_id == V7_PACKET_ID_MULTI) {
945                 f->left = (p[0] & 0x80) >> 7;
946                 f->right = (p[0] & 0x20) >> 5;
947                 f->middle = (p[0] & 0x10) >> 4;
948         }
949
950         if (pkt_id == V7_PACKET_ID_TWO)
951                 f->fingers = alps_get_mt_count(f->mt);
952         else if (pkt_id == V7_PACKET_ID_MULTI)
953                 f->fingers = 3 + (p[5] & 0x03);
954
955         return 0;
956 }
957
958 static void alps_process_trackstick_packet_v7(struct psmouse *psmouse)
959 {
960         struct alps_data *priv = psmouse->private;
961         unsigned char *packet = psmouse->packet;
962         struct input_dev *dev2 = priv->dev2;
963         int x, y, z, left, right, middle;
964
965         /*
966          *        b7 b6 b5 b4 b3 b2 b1 b0
967          * Byte0   0  1  0  0  1  0  0  0
968          * Byte1   1  1  *  *  1  M  R  L
969          * Byte2  X7  1 X5 X4 X3 X2 X1 X0
970          * Byte3  Z6  1 Y6 X6  1 Y2 Y1 Y0
971          * Byte4  Y7  0 Y5 Y4 Y3  1  1  0
972          * Byte5 T&P  0 Z5 Z4 Z3 Z2 Z1 Z0
973          * M / R / L: Middle / Right / Left button
974          */
975
976         x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2);
977         y = (packet[3] & 0x07) | (packet[4] & 0xb8) |
978             ((packet[3] & 0x20) << 1);
979         z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1);
980
981         left = (packet[1] & 0x01);
982         right = (packet[1] & 0x02) >> 1;
983         middle = (packet[1] & 0x04) >> 2;
984
985         /* Divide 2 since trackpoint's speed is too fast */
986         input_report_rel(dev2, REL_X, (char)x / 2);
987         input_report_rel(dev2, REL_Y, -((char)y / 2));
988
989         input_report_key(dev2, BTN_LEFT, left);
990         input_report_key(dev2, BTN_RIGHT, right);
991         input_report_key(dev2, BTN_MIDDLE, middle);
992
993         input_sync(dev2);
994 }
995
996 static void alps_process_touchpad_packet_v7(struct psmouse *psmouse)
997 {
998         struct alps_data *priv = psmouse->private;
999         struct input_dev *dev = psmouse->dev;
1000         struct alps_fields *f = &priv->f;
1001
1002         memset(f, 0, sizeof(*f));
1003
1004         if (priv->decode_fields(f, psmouse->packet, psmouse))
1005                 return;
1006
1007         alps_report_mt_data(psmouse, alps_get_mt_count(f->mt));
1008
1009         input_mt_report_finger_count(dev, f->fingers);
1010
1011         input_report_key(dev, BTN_LEFT, f->left);
1012         input_report_key(dev, BTN_RIGHT, f->right);
1013         input_report_key(dev, BTN_MIDDLE, f->middle);
1014
1015         input_sync(dev);
1016 }
1017
1018 static void alps_process_packet_v7(struct psmouse *psmouse)
1019 {
1020         unsigned char *packet = psmouse->packet;
1021
1022         if (packet[0] == 0x48 && (packet[4] & 0x47) == 0x06)
1023                 alps_process_trackstick_packet_v7(psmouse);
1024         else
1025                 alps_process_touchpad_packet_v7(psmouse);
1026 }
1027
1028 static void alps_report_bare_ps2_packet(struct psmouse *psmouse,
1029                                         unsigned char packet[],
1030                                         bool report_buttons)
1031 {
1032         struct alps_data *priv = psmouse->private;
1033         struct input_dev *dev2 = priv->dev2;
1034
1035         if (report_buttons)
1036                 alps_report_buttons(psmouse, dev2, psmouse->dev,
1037                                 packet[0] & 1, packet[0] & 2, packet[0] & 4);
1038
1039         input_report_rel(dev2, REL_X,
1040                 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0);
1041         input_report_rel(dev2, REL_Y,
1042                 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0);
1043
1044         input_sync(dev2);
1045 }
1046
1047 static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse)
1048 {
1049         struct alps_data *priv = psmouse->private;
1050
1051         if (psmouse->pktcnt < 6)
1052                 return PSMOUSE_GOOD_DATA;
1053
1054         if (psmouse->pktcnt == 6) {
1055                 /*
1056                  * Start a timer to flush the packet if it ends up last
1057                  * 6-byte packet in the stream. Timer needs to fire
1058                  * psmouse core times out itself. 20 ms should be enough
1059                  * to decide if we are getting more data or not.
1060                  */
1061                 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20));
1062                 return PSMOUSE_GOOD_DATA;
1063         }
1064
1065         del_timer(&priv->timer);
1066
1067         if (psmouse->packet[6] & 0x80) {
1068
1069                 /*
1070                  * Highest bit is set - that means we either had
1071                  * complete ALPS packet and this is start of the
1072                  * next packet or we got garbage.
1073                  */
1074
1075                 if (((psmouse->packet[3] |
1076                       psmouse->packet[4] |
1077                       psmouse->packet[5]) & 0x80) ||
1078                     (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) {
1079                         psmouse_dbg(psmouse,
1080                                     "refusing packet %4ph (suspected interleaved ps/2)\n",
1081                                     psmouse->packet + 3);
1082                         return PSMOUSE_BAD_DATA;
1083                 }
1084
1085                 priv->process_packet(psmouse);
1086
1087                 /* Continue with the next packet */
1088                 psmouse->packet[0] = psmouse->packet[6];
1089                 psmouse->pktcnt = 1;
1090
1091         } else {
1092
1093                 /*
1094                  * High bit is 0 - that means that we indeed got a PS/2
1095                  * packet in the middle of ALPS packet.
1096                  *
1097                  * There is also possibility that we got 6-byte ALPS
1098                  * packet followed  by 3-byte packet from trackpoint. We
1099                  * can not distinguish between these 2 scenarios but
1100                  * because the latter is unlikely to happen in course of
1101                  * normal operation (user would need to press all
1102                  * buttons on the pad and start moving trackpoint
1103                  * without touching the pad surface) we assume former.
1104                  * Even if we are wrong the wost thing that would happen
1105                  * the cursor would jump but we should not get protocol
1106                  * de-synchronization.
1107                  */
1108
1109                 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3],
1110                                             false);
1111
1112                 /*
1113                  * Continue with the standard ALPS protocol handling,
1114                  * but make sure we won't process it as an interleaved
1115                  * packet again, which may happen if all buttons are
1116                  * pressed. To avoid this let's reset the 4th bit which
1117                  * is normally 1.
1118                  */
1119                 psmouse->packet[3] = psmouse->packet[6] & 0xf7;
1120                 psmouse->pktcnt = 4;
1121         }
1122
1123         return PSMOUSE_GOOD_DATA;
1124 }
1125
1126 static void alps_flush_packet(unsigned long data)
1127 {
1128         struct psmouse *psmouse = (struct psmouse *)data;
1129         struct alps_data *priv = psmouse->private;
1130
1131         serio_pause_rx(psmouse->ps2dev.serio);
1132
1133         if (psmouse->pktcnt == psmouse->pktsize) {
1134
1135                 /*
1136                  * We did not any more data in reasonable amount of time.
1137                  * Validate the last 3 bytes and process as a standard
1138                  * ALPS packet.
1139                  */
1140                 if ((psmouse->packet[3] |
1141                      psmouse->packet[4] |
1142                      psmouse->packet[5]) & 0x80) {
1143                         psmouse_dbg(psmouse,
1144                                     "refusing packet %3ph (suspected interleaved ps/2)\n",
1145                                     psmouse->packet + 3);
1146                 } else {
1147                         priv->process_packet(psmouse);
1148                 }
1149                 psmouse->pktcnt = 0;
1150         }
1151
1152         serio_continue_rx(psmouse->ps2dev.serio);
1153 }
1154
1155 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
1156 {
1157         struct alps_data *priv = psmouse->private;
1158
1159         if ((psmouse->packet[0] & 0xc8) == 0x08) { /* PS/2 packet */
1160                 if (psmouse->pktcnt == 3) {
1161                         alps_report_bare_ps2_packet(psmouse, psmouse->packet,
1162                                                     true);
1163                         return PSMOUSE_FULL_PACKET;
1164                 }
1165                 return PSMOUSE_GOOD_DATA;
1166         }
1167
1168         /* Check for PS/2 packet stuffed in the middle of ALPS packet. */
1169
1170         if ((priv->flags & ALPS_PS2_INTERLEAVED) &&
1171             psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) {
1172                 return alps_handle_interleaved_ps2(psmouse);
1173         }
1174
1175         if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) {
1176                 psmouse_dbg(psmouse,
1177                             "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n",
1178                             psmouse->packet[0], priv->mask0, priv->byte0);
1179                 return PSMOUSE_BAD_DATA;
1180         }
1181
1182         /* Bytes 2 - pktsize should have 0 in the highest bit */
1183         if ((priv->proto_version < ALPS_PROTO_V5) &&
1184             psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize &&
1185             (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) {
1186                 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
1187                             psmouse->pktcnt - 1,
1188                             psmouse->packet[psmouse->pktcnt - 1]);
1189                 return PSMOUSE_BAD_DATA;
1190         }
1191
1192         if (priv->proto_version == ALPS_PROTO_V7 &&
1193             !alps_is_valid_package_v7(psmouse)) {
1194                 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
1195                             psmouse->pktcnt - 1,
1196                             psmouse->packet[psmouse->pktcnt - 1]);
1197                 return PSMOUSE_BAD_DATA;
1198         }
1199
1200         if (psmouse->pktcnt == psmouse->pktsize) {
1201                 priv->process_packet(psmouse);
1202                 return PSMOUSE_FULL_PACKET;
1203         }
1204
1205         return PSMOUSE_GOOD_DATA;
1206 }
1207
1208 static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble)
1209 {
1210         struct ps2dev *ps2dev = &psmouse->ps2dev;
1211         struct alps_data *priv = psmouse->private;
1212         int command;
1213         unsigned char *param;
1214         unsigned char dummy[4];
1215
1216         BUG_ON(nibble > 0xf);
1217
1218         command = priv->nibble_commands[nibble].command;
1219         param = (command & 0x0f00) ?
1220                 dummy : (unsigned char *)&priv->nibble_commands[nibble].data;
1221
1222         if (ps2_command(ps2dev, param, command))
1223                 return -1;
1224
1225         return 0;
1226 }
1227
1228 static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr)
1229 {
1230         struct ps2dev *ps2dev = &psmouse->ps2dev;
1231         struct alps_data *priv = psmouse->private;
1232         int i, nibble;
1233
1234         if (ps2_command(ps2dev, NULL, priv->addr_command))
1235                 return -1;
1236
1237         for (i = 12; i >= 0; i -= 4) {
1238                 nibble = (addr >> i) & 0xf;
1239                 if (alps_command_mode_send_nibble(psmouse, nibble))
1240                         return -1;
1241         }
1242
1243         return 0;
1244 }
1245
1246 static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
1247 {
1248         struct ps2dev *ps2dev = &psmouse->ps2dev;
1249         unsigned char param[4];
1250
1251         if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1252                 return -1;
1253
1254         /*
1255          * The address being read is returned in the first two bytes
1256          * of the result. Check that this address matches the expected
1257          * address.
1258          */
1259         if (addr != ((param[0] << 8) | param[1]))
1260                 return -1;
1261
1262         return param[2];
1263 }
1264
1265 static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
1266 {
1267         if (alps_command_mode_set_addr(psmouse, addr))
1268                 return -1;
1269         return __alps_command_mode_read_reg(psmouse, addr);
1270 }
1271
1272 static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value)
1273 {
1274         if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf))
1275                 return -1;
1276         if (alps_command_mode_send_nibble(psmouse, value & 0xf))
1277                 return -1;
1278         return 0;
1279 }
1280
1281 static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr,
1282                                        u8 value)
1283 {
1284         if (alps_command_mode_set_addr(psmouse, addr))
1285                 return -1;
1286         return __alps_command_mode_write_reg(psmouse, value);
1287 }
1288
1289 static int alps_rpt_cmd(struct psmouse *psmouse, int init_command,
1290                         int repeated_command, unsigned char *param)
1291 {
1292         struct ps2dev *ps2dev = &psmouse->ps2dev;
1293
1294         param[0] = 0;
1295         if (init_command && ps2_command(ps2dev, param, init_command))
1296                 return -EIO;
1297
1298         if (ps2_command(ps2dev,  NULL, repeated_command) ||
1299             ps2_command(ps2dev,  NULL, repeated_command) ||
1300             ps2_command(ps2dev,  NULL, repeated_command))
1301                 return -EIO;
1302
1303         param[0] = param[1] = param[2] = 0xff;
1304         if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1305                 return -EIO;
1306
1307         psmouse_dbg(psmouse, "%2.2X report: %3ph\n",
1308                     repeated_command, param);
1309         return 0;
1310 }
1311
1312 static bool alps_check_valid_firmware_id(unsigned char id[])
1313 {
1314         if (id[0] == 0x73)
1315                 return true;
1316
1317         if (id[0] == 0x88 &&
1318             (id[1] == 0x07 ||
1319              id[1] == 0x08 ||
1320              (id[1] & 0xf0) == 0xb0 ||
1321              (id[1] & 0xf0) == 0xc0)) {
1322                 return true;
1323         }
1324
1325         return false;
1326 }
1327
1328 static int alps_enter_command_mode(struct psmouse *psmouse)
1329 {
1330         unsigned char param[4];
1331
1332         if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) {
1333                 psmouse_err(psmouse, "failed to enter command mode\n");
1334                 return -1;
1335         }
1336
1337         if (!alps_check_valid_firmware_id(param)) {
1338                 psmouse_dbg(psmouse,
1339                             "unknown response while entering command mode\n");
1340                 return -1;
1341         }
1342         return 0;
1343 }
1344
1345 static inline int alps_exit_command_mode(struct psmouse *psmouse)
1346 {
1347         struct ps2dev *ps2dev = &psmouse->ps2dev;
1348         if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM))
1349                 return -1;
1350         return 0;
1351 }
1352
1353 /*
1354  * For DualPoint devices select the device that should respond to
1355  * subsequent commands. It looks like glidepad is behind stickpointer,
1356  * I'd thought it would be other way around...
1357  */
1358 static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable)
1359 {
1360         struct ps2dev *ps2dev = &psmouse->ps2dev;
1361         int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11;
1362
1363         if (ps2_command(ps2dev, NULL, cmd) ||
1364             ps2_command(ps2dev, NULL, cmd) ||
1365             ps2_command(ps2dev, NULL, cmd) ||
1366             ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1367                 return -1;
1368
1369         /* we may get 3 more bytes, just ignore them */
1370         ps2_drain(ps2dev, 3, 100);
1371
1372         return 0;
1373 }
1374
1375 static int alps_absolute_mode_v1_v2(struct psmouse *psmouse)
1376 {
1377         struct ps2dev *ps2dev = &psmouse->ps2dev;
1378
1379         /* Try ALPS magic knock - 4 disable before enable */
1380         if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1381             ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1382             ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1383             ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1384             ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE))
1385                 return -1;
1386
1387         /*
1388          * Switch mouse to poll (remote) mode so motion data will not
1389          * get in our way
1390          */
1391         return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL);
1392 }
1393
1394 static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word)
1395 {
1396         int i, nibble;
1397
1398         /*
1399          * b0-b11 are valid bits, send sequence is inverse.
1400          * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1
1401          */
1402         for (i = 0; i <= 8; i += 4) {
1403                 nibble = (word >> i) & 0xf;
1404                 if (alps_command_mode_send_nibble(psmouse, nibble))
1405                         return -1;
1406         }
1407
1408         return 0;
1409 }
1410
1411 static int alps_monitor_mode_write_reg(struct psmouse *psmouse,
1412                                        u16 addr, u16 value)
1413 {
1414         struct ps2dev *ps2dev = &psmouse->ps2dev;
1415
1416         /* 0x0A0 is the command to write the word */
1417         if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) ||
1418             alps_monitor_mode_send_word(psmouse, 0x0A0) ||
1419             alps_monitor_mode_send_word(psmouse, addr) ||
1420             alps_monitor_mode_send_word(psmouse, value) ||
1421             ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1422                 return -1;
1423
1424         return 0;
1425 }
1426
1427 static int alps_monitor_mode(struct psmouse *psmouse, bool enable)
1428 {
1429         struct ps2dev *ps2dev = &psmouse->ps2dev;
1430
1431         if (enable) {
1432                 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */
1433                 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
1434                     ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) ||
1435                     ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1436                     ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1437                     ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
1438                     ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1439                     ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
1440                     ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO))
1441                         return -1;
1442         } else {
1443                 /* EC to exit monitor mode */
1444                 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP))
1445                         return -1;
1446         }
1447
1448         return 0;
1449 }
1450
1451 static int alps_absolute_mode_v6(struct psmouse *psmouse)
1452 {
1453         u16 reg_val = 0x181;
1454         int ret = -1;
1455
1456         /* enter monitor mode, to write the register */
1457         if (alps_monitor_mode(psmouse, true))
1458                 return -1;
1459
1460         ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val);
1461
1462         if (alps_monitor_mode(psmouse, false))
1463                 ret = -1;
1464
1465         return ret;
1466 }
1467
1468 static int alps_get_status(struct psmouse *psmouse, char *param)
1469 {
1470         /* Get status: 0xF5 0xF5 0xF5 0xE9 */
1471         if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param))
1472                 return -1;
1473
1474         return 0;
1475 }
1476
1477 /*
1478  * Turn touchpad tapping on or off. The sequences are:
1479  * 0xE9 0xF5 0xF5 0xF3 0x0A to enable,
1480  * 0xE9 0xF5 0xF5 0xE8 0x00 to disable.
1481  * My guess that 0xE9 (GetInfo) is here as a sync point.
1482  * For models that also have stickpointer (DualPoints) its tapping
1483  * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but
1484  * we don't fiddle with it.
1485  */
1486 static int alps_tap_mode(struct psmouse *psmouse, int enable)
1487 {
1488         struct ps2dev *ps2dev = &psmouse->ps2dev;
1489         int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES;
1490         unsigned char tap_arg = enable ? 0x0A : 0x00;
1491         unsigned char param[4];
1492
1493         if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) ||
1494             ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1495             ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1496             ps2_command(ps2dev, &tap_arg, cmd))
1497                 return -1;
1498
1499         if (alps_get_status(psmouse, param))
1500                 return -1;
1501
1502         return 0;
1503 }
1504
1505 /*
1506  * alps_poll() - poll the touchpad for current motion packet.
1507  * Used in resync.
1508  */
1509 static int alps_poll(struct psmouse *psmouse)
1510 {
1511         struct alps_data *priv = psmouse->private;
1512         unsigned char buf[sizeof(psmouse->packet)];
1513         bool poll_failed;
1514
1515         if (priv->flags & ALPS_PASS)
1516                 alps_passthrough_mode_v2(psmouse, true);
1517
1518         poll_failed = ps2_command(&psmouse->ps2dev, buf,
1519                                   PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0;
1520
1521         if (priv->flags & ALPS_PASS)
1522                 alps_passthrough_mode_v2(psmouse, false);
1523
1524         if (poll_failed || (buf[0] & priv->mask0) != priv->byte0)
1525                 return -1;
1526
1527         if ((psmouse->badbyte & 0xc8) == 0x08) {
1528 /*
1529  * Poll the track stick ...
1530  */
1531                 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8)))
1532                         return -1;
1533         }
1534
1535         memcpy(psmouse->packet, buf, sizeof(buf));
1536         return 0;
1537 }
1538
1539 static int alps_hw_init_v1_v2(struct psmouse *psmouse)
1540 {
1541         struct alps_data *priv = psmouse->private;
1542
1543         if ((priv->flags & ALPS_PASS) &&
1544             alps_passthrough_mode_v2(psmouse, true)) {
1545                 return -1;
1546         }
1547
1548         if (alps_tap_mode(psmouse, true)) {
1549                 psmouse_warn(psmouse, "Failed to enable hardware tapping\n");
1550                 return -1;
1551         }
1552
1553         if (alps_absolute_mode_v1_v2(psmouse)) {
1554                 psmouse_err(psmouse, "Failed to enable absolute mode\n");
1555                 return -1;
1556         }
1557
1558         if ((priv->flags & ALPS_PASS) &&
1559             alps_passthrough_mode_v2(psmouse, false)) {
1560                 return -1;
1561         }
1562
1563         /* ALPS needs stream mode, otherwise it won't report any data */
1564         if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) {
1565                 psmouse_err(psmouse, "Failed to enable stream mode\n");
1566                 return -1;
1567         }
1568
1569         return 0;
1570 }
1571
1572 static int alps_hw_init_v6(struct psmouse *psmouse)
1573 {
1574         unsigned char param[2] = {0xC8, 0x14};
1575
1576         /* Enter passthrough mode to let trackpoint enter 6byte raw mode */
1577         if (alps_passthrough_mode_v2(psmouse, true))
1578                 return -1;
1579
1580         if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1581             ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1582             ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1583             ps2_command(&psmouse->ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
1584             ps2_command(&psmouse->ps2dev, &param[1], PSMOUSE_CMD_SETRATE))
1585                 return -1;
1586
1587         if (alps_passthrough_mode_v2(psmouse, false))
1588                 return -1;
1589
1590         if (alps_absolute_mode_v6(psmouse)) {
1591                 psmouse_err(psmouse, "Failed to enable absolute mode\n");
1592                 return -1;
1593         }
1594
1595         return 0;
1596 }
1597
1598 /*
1599  * Enable or disable passthrough mode to the trackstick.
1600  */
1601 static int alps_passthrough_mode_v3(struct psmouse *psmouse,
1602                                     int reg_base, bool enable)
1603 {
1604         int reg_val, ret = -1;
1605
1606         if (alps_enter_command_mode(psmouse))
1607                 return -1;
1608
1609         reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008);
1610         if (reg_val == -1)
1611                 goto error;
1612
1613         if (enable)
1614                 reg_val |= 0x01;
1615         else
1616                 reg_val &= ~0x01;
1617
1618         ret = __alps_command_mode_write_reg(psmouse, reg_val);
1619
1620 error:
1621         if (alps_exit_command_mode(psmouse))
1622                 ret = -1;
1623         return ret;
1624 }
1625
1626 /* Must be in command mode when calling this function */
1627 static int alps_absolute_mode_v3(struct psmouse *psmouse)
1628 {
1629         int reg_val;
1630
1631         reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
1632         if (reg_val == -1)
1633                 return -1;
1634
1635         reg_val |= 0x06;
1636         if (__alps_command_mode_write_reg(psmouse, reg_val))
1637                 return -1;
1638
1639         return 0;
1640 }
1641
1642 static int alps_probe_trackstick_v3(struct psmouse *psmouse, int reg_base)
1643 {
1644         int ret = -EIO, reg_val;
1645
1646         if (alps_enter_command_mode(psmouse))
1647                 goto error;
1648
1649         reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08);
1650         if (reg_val == -1)
1651                 goto error;
1652
1653         /* bit 7: trackstick is present */
1654         ret = reg_val & 0x80 ? 0 : -ENODEV;
1655
1656 error:
1657         alps_exit_command_mode(psmouse);
1658         return ret;
1659 }
1660
1661 static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base)
1662 {
1663         struct ps2dev *ps2dev = &psmouse->ps2dev;
1664         int ret = 0;
1665         unsigned char param[4];
1666
1667         if (alps_passthrough_mode_v3(psmouse, reg_base, true))
1668                 return -EIO;
1669
1670         /*
1671          * E7 report for the trackstick
1672          *
1673          * There have been reports of failures to seem to trace back
1674          * to the above trackstick check failing. When these occur
1675          * this E7 report fails, so when that happens we continue
1676          * with the assumption that there isn't a trackstick after
1677          * all.
1678          */
1679         if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) {
1680                 psmouse_warn(psmouse, "trackstick E7 report failed\n");
1681                 ret = -ENODEV;
1682         } else {
1683                 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param);
1684
1685                 /*
1686                  * Not sure what this does, but it is absolutely
1687                  * essential. Without it, the touchpad does not
1688                  * work at all and the trackstick just emits normal
1689                  * PS/2 packets.
1690                  */
1691                 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1692                     ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1693                     ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1694                     alps_command_mode_send_nibble(psmouse, 0x9) ||
1695                     alps_command_mode_send_nibble(psmouse, 0x4)) {
1696                         psmouse_err(psmouse,
1697                                     "Error sending magic E6 sequence\n");
1698                         ret = -EIO;
1699                         goto error;
1700                 }
1701
1702                 /*
1703                  * This ensures the trackstick packets are in the format
1704                  * supported by this driver. If bit 1 isn't set the packet
1705                  * format is different.
1706                  */
1707                 if (alps_enter_command_mode(psmouse) ||
1708                     alps_command_mode_write_reg(psmouse,
1709                                                 reg_base + 0x08, 0x82) ||
1710                     alps_exit_command_mode(psmouse))
1711                         ret = -EIO;
1712         }
1713
1714 error:
1715         if (alps_passthrough_mode_v3(psmouse, reg_base, false))
1716                 ret = -EIO;
1717
1718         return ret;
1719 }
1720
1721 static int alps_hw_init_v3(struct psmouse *psmouse)
1722 {
1723         struct ps2dev *ps2dev = &psmouse->ps2dev;
1724         int reg_val;
1725         unsigned char param[4];
1726
1727         reg_val = alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE);
1728         if (reg_val == -EIO)
1729                 goto error;
1730
1731         if (reg_val == 0 &&
1732             alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO)
1733                 goto error;
1734
1735         if (alps_enter_command_mode(psmouse) ||
1736             alps_absolute_mode_v3(psmouse)) {
1737                 psmouse_err(psmouse, "Failed to enter absolute mode\n");
1738                 goto error;
1739         }
1740
1741         reg_val = alps_command_mode_read_reg(psmouse, 0x0006);
1742         if (reg_val == -1)
1743                 goto error;
1744         if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
1745                 goto error;
1746
1747         reg_val = alps_command_mode_read_reg(psmouse, 0x0007);
1748         if (reg_val == -1)
1749                 goto error;
1750         if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
1751                 goto error;
1752
1753         if (alps_command_mode_read_reg(psmouse, 0x0144) == -1)
1754                 goto error;
1755         if (__alps_command_mode_write_reg(psmouse, 0x04))
1756                 goto error;
1757
1758         if (alps_command_mode_read_reg(psmouse, 0x0159) == -1)
1759                 goto error;
1760         if (__alps_command_mode_write_reg(psmouse, 0x03))
1761                 goto error;
1762
1763         if (alps_command_mode_read_reg(psmouse, 0x0163) == -1)
1764                 goto error;
1765         if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03))
1766                 goto error;
1767
1768         if (alps_command_mode_read_reg(psmouse, 0x0162) == -1)
1769                 goto error;
1770         if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04))
1771                 goto error;
1772
1773         alps_exit_command_mode(psmouse);
1774
1775         /* Set rate and enable data reporting */
1776         param[0] = 0x64;
1777         if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
1778             ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
1779                 psmouse_err(psmouse, "Failed to enable data reporting\n");
1780                 return -1;
1781         }
1782
1783         return 0;
1784
1785 error:
1786         /*
1787          * Leaving the touchpad in command mode will essentially render
1788          * it unusable until the machine reboots, so exit it here just
1789          * to be safe
1790          */
1791         alps_exit_command_mode(psmouse);
1792         return -1;
1793 }
1794
1795 static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch)
1796 {
1797         int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys;
1798         struct alps_data *priv = psmouse->private;
1799
1800         reg = alps_command_mode_read_reg(psmouse, reg_pitch);
1801         if (reg < 0)
1802                 return reg;
1803
1804         x_pitch = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */
1805         x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */
1806
1807         y_pitch = (char)reg >> 4; /* sign extend upper 4 bits */
1808         y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */
1809
1810         reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1);
1811         if (reg < 0)
1812                 return reg;
1813
1814         x_electrode = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */
1815         x_electrode = 17 + x_electrode;
1816
1817         y_electrode = (char)reg >> 4; /* sign extend upper 4 bits */
1818         y_electrode = 13 + y_electrode;
1819
1820         x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */
1821         y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */
1822
1823         priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */
1824         priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */
1825
1826         psmouse_dbg(psmouse,
1827                     "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n",
1828                     x_pitch, y_pitch, x_electrode, y_electrode,
1829                     x_phys / 10, y_phys / 10, priv->x_res, priv->y_res);
1830
1831         return 0;
1832 }
1833
1834 static int alps_hw_init_rushmore_v3(struct psmouse *psmouse)
1835 {
1836         struct alps_data *priv = psmouse->private;
1837         struct ps2dev *ps2dev = &psmouse->ps2dev;
1838         int reg_val, ret = -1;
1839
1840         if (priv->flags & ALPS_DUALPOINT) {
1841                 reg_val = alps_setup_trackstick_v3(psmouse,
1842                                                    ALPS_REG_BASE_RUSHMORE);
1843                 if (reg_val == -EIO)
1844                         goto error;
1845                 if (reg_val == -ENODEV)
1846                         priv->flags &= ~ALPS_DUALPOINT;
1847         }
1848
1849         if (alps_enter_command_mode(psmouse) ||
1850             alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 ||
1851             alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00))
1852                 goto error;
1853
1854         if (alps_get_v3_v7_resolution(psmouse, 0xc2da))
1855                 goto error;
1856
1857         reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6);
1858         if (reg_val == -1)
1859                 goto error;
1860         if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd))
1861                 goto error;
1862
1863         if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64))
1864                 goto error;
1865
1866         /* enter absolute mode */
1867         reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4);
1868         if (reg_val == -1)
1869                 goto error;
1870         if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02))
1871                 goto error;
1872
1873         alps_exit_command_mode(psmouse);
1874         return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
1875
1876 error:
1877         alps_exit_command_mode(psmouse);
1878         return ret;
1879 }
1880
1881 /* Must be in command mode when calling this function */
1882 static int alps_absolute_mode_v4(struct psmouse *psmouse)
1883 {
1884         int reg_val;
1885
1886         reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
1887         if (reg_val == -1)
1888                 return -1;
1889
1890         reg_val |= 0x02;
1891         if (__alps_command_mode_write_reg(psmouse, reg_val))
1892                 return -1;
1893
1894         return 0;
1895 }
1896
1897 static int alps_hw_init_v4(struct psmouse *psmouse)
1898 {
1899         struct ps2dev *ps2dev = &psmouse->ps2dev;
1900         unsigned char param[4];
1901
1902         if (alps_enter_command_mode(psmouse))
1903                 goto error;
1904
1905         if (alps_absolute_mode_v4(psmouse)) {
1906                 psmouse_err(psmouse, "Failed to enter absolute mode\n");
1907                 goto error;
1908         }
1909
1910         if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c))
1911                 goto error;
1912
1913         if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03))
1914                 goto error;
1915
1916         if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03))
1917                 goto error;
1918
1919         if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15))
1920                 goto error;
1921
1922         if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01))
1923                 goto error;
1924
1925         if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03))
1926                 goto error;
1927
1928         if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03))
1929                 goto error;
1930
1931         if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03))
1932                 goto error;
1933
1934         alps_exit_command_mode(psmouse);
1935
1936         /*
1937          * This sequence changes the output from a 9-byte to an
1938          * 8-byte format. All the same data seems to be present,
1939          * just in a more compact format.
1940          */
1941         param[0] = 0xc8;
1942         param[1] = 0x64;
1943         param[2] = 0x50;
1944         if (ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
1945             ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE) ||
1946             ps2_command(ps2dev, &param[2], PSMOUSE_CMD_SETRATE) ||
1947             ps2_command(ps2dev, param, PSMOUSE_CMD_GETID))
1948                 return -1;
1949
1950         /* Set rate and enable data reporting */
1951         param[0] = 0x64;
1952         if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
1953             ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
1954                 psmouse_err(psmouse, "Failed to enable data reporting\n");
1955                 return -1;
1956         }
1957
1958         return 0;
1959
1960 error:
1961         /*
1962          * Leaving the touchpad in command mode will essentially render
1963          * it unusable until the machine reboots, so exit it here just
1964          * to be safe
1965          */
1966         alps_exit_command_mode(psmouse);
1967         return -1;
1968 }
1969
1970 static int alps_dolphin_get_device_area(struct psmouse *psmouse,
1971                                         struct alps_data *priv)
1972 {
1973         struct ps2dev *ps2dev = &psmouse->ps2dev;
1974         unsigned char param[4] = {0};
1975         int num_x_electrode, num_y_electrode;
1976
1977         if (alps_enter_command_mode(psmouse))
1978                 return -1;
1979
1980         param[0] = 0x0a;
1981         if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
1982             ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
1983             ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
1984             ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
1985             ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE))
1986                 return -1;
1987
1988         if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1989                 return -1;
1990
1991         /*
1992          * Dolphin's sensor line number is not fixed. It can be calculated
1993          * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET.
1994          * Further more, we can get device's x_max and y_max by multiplying
1995          * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE.
1996          *
1997          * e.g. When we get register's sensor_x = 11 & sensor_y = 8,
1998          *      real sensor line number X = 11 + 8 = 19, and
1999          *      real sensor line number Y = 8 + 1 = 9.
2000          *      So, x_max = (19 - 1) * 64 = 1152, and
2001          *          y_max = (9 - 1) * 64 = 512.
2002          */
2003         num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F);
2004         num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F);
2005         priv->x_bits = num_x_electrode;
2006         priv->y_bits = num_y_electrode;
2007         priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE;
2008         priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE;
2009
2010         if (alps_exit_command_mode(psmouse))
2011                 return -1;
2012
2013         return 0;
2014 }
2015
2016 static int alps_hw_init_dolphin_v1(struct psmouse *psmouse)
2017 {
2018         struct ps2dev *ps2dev = &psmouse->ps2dev;
2019         unsigned char param[2];
2020
2021         /* This is dolphin "v1" as empirically defined by florin9doi */
2022         param[0] = 0x64;
2023         param[1] = 0x28;
2024
2025         if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
2026             ps2_command(ps2dev, &param[0], PSMOUSE_CMD_SETRATE) ||
2027             ps2_command(ps2dev, &param[1], PSMOUSE_CMD_SETRATE))
2028                 return -1;
2029
2030         return 0;
2031 }
2032
2033 static int alps_hw_init_v7(struct psmouse *psmouse)
2034 {
2035         struct ps2dev *ps2dev = &psmouse->ps2dev;
2036         int reg_val, ret = -1;
2037
2038         if (alps_enter_command_mode(psmouse) ||
2039             alps_command_mode_read_reg(psmouse, 0xc2d9) == -1)
2040                 goto error;
2041
2042         if (alps_get_v3_v7_resolution(psmouse, 0xc397))
2043                 goto error;
2044
2045         if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64))
2046                 goto error;
2047
2048         reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4);
2049         if (reg_val == -1)
2050                 goto error;
2051         if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02))
2052                 goto error;
2053
2054         alps_exit_command_mode(psmouse);
2055         return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
2056
2057 error:
2058         alps_exit_command_mode(psmouse);
2059         return ret;
2060 }
2061
2062 static void alps_set_defaults(struct alps_data *priv)
2063 {
2064         priv->byte0 = 0x8f;
2065         priv->mask0 = 0x8f;
2066         priv->flags = ALPS_DUALPOINT;
2067
2068         priv->x_max = 2000;
2069         priv->y_max = 1400;
2070         priv->x_bits = 15;
2071         priv->y_bits = 11;
2072
2073         switch (priv->proto_version) {
2074         case ALPS_PROTO_V1:
2075         case ALPS_PROTO_V2:
2076                 priv->hw_init = alps_hw_init_v1_v2;
2077                 priv->process_packet = alps_process_packet_v1_v2;
2078                 priv->set_abs_params = alps_set_abs_params_st;
2079                 priv->x_max = 1023;
2080                 priv->y_max = 767;
2081                 break;
2082         case ALPS_PROTO_V3:
2083                 priv->hw_init = alps_hw_init_v3;
2084                 priv->process_packet = alps_process_packet_v3;
2085                 priv->set_abs_params = alps_set_abs_params_mt;
2086                 priv->decode_fields = alps_decode_pinnacle;
2087                 priv->nibble_commands = alps_v3_nibble_commands;
2088                 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2089                 break;
2090         case ALPS_PROTO_V4:
2091                 priv->hw_init = alps_hw_init_v4;
2092                 priv->process_packet = alps_process_packet_v4;
2093                 priv->set_abs_params = alps_set_abs_params_mt;
2094                 priv->nibble_commands = alps_v4_nibble_commands;
2095                 priv->addr_command = PSMOUSE_CMD_DISABLE;
2096                 break;
2097         case ALPS_PROTO_V5:
2098                 priv->hw_init = alps_hw_init_dolphin_v1;
2099                 priv->process_packet = alps_process_touchpad_packet_v3_v5;
2100                 priv->decode_fields = alps_decode_dolphin;
2101                 priv->set_abs_params = alps_set_abs_params_mt;
2102                 priv->nibble_commands = alps_v3_nibble_commands;
2103                 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2104                 priv->byte0 = 0xc8;
2105                 priv->mask0 = 0xd8;
2106                 priv->flags = 0;
2107                 priv->x_max = 1360;
2108                 priv->y_max = 660;
2109                 priv->x_bits = 23;
2110                 priv->y_bits = 12;
2111                 break;
2112         case ALPS_PROTO_V6:
2113                 priv->hw_init = alps_hw_init_v6;
2114                 priv->process_packet = alps_process_packet_v6;
2115                 priv->set_abs_params = alps_set_abs_params_st;
2116                 priv->nibble_commands = alps_v6_nibble_commands;
2117                 priv->x_max = 2047;
2118                 priv->y_max = 1535;
2119                 break;
2120         case ALPS_PROTO_V7:
2121                 priv->hw_init = alps_hw_init_v7;
2122                 priv->process_packet = alps_process_packet_v7;
2123                 priv->decode_fields = alps_decode_packet_v7;
2124                 priv->set_abs_params = alps_set_abs_params_mt;
2125                 priv->nibble_commands = alps_v3_nibble_commands;
2126                 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2127                 priv->x_max = 0xfff;
2128                 priv->y_max = 0x7ff;
2129                 priv->byte0 = 0x48;
2130                 priv->mask0 = 0x48;
2131
2132                 if (priv->fw_ver[1] != 0xba)
2133                         priv->flags |= ALPS_BUTTONPAD;
2134                 break;
2135         }
2136 }
2137
2138 static int alps_match_table(struct psmouse *psmouse, struct alps_data *priv,
2139                             unsigned char *e7, unsigned char *ec)
2140 {
2141         const struct alps_model_info *model;
2142         int i;
2143
2144         for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) {
2145                 model = &alps_model_data[i];
2146
2147                 if (!memcmp(e7, model->signature, sizeof(model->signature)) &&
2148                     (!model->command_mode_resp ||
2149                      model->command_mode_resp == ec[2])) {
2150
2151                         priv->proto_version = model->proto_version;
2152                         alps_set_defaults(priv);
2153
2154                         priv->flags = model->flags;
2155                         priv->byte0 = model->byte0;
2156                         priv->mask0 = model->mask0;
2157
2158                         return 0;
2159                 }
2160         }
2161
2162         return -EINVAL;
2163 }
2164
2165 static int alps_identify(struct psmouse *psmouse, struct alps_data *priv)
2166 {
2167         unsigned char e6[4], e7[4], ec[4];
2168
2169         /*
2170          * First try "E6 report".
2171          * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed.
2172          * The bits 0-2 of the first byte will be 1s if some buttons are
2173          * pressed.
2174          */
2175         if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
2176                          PSMOUSE_CMD_SETSCALE11, e6))
2177                 return -EIO;
2178
2179         if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100))
2180                 return -EINVAL;
2181
2182         /*
2183          * Now get the "E7" and "EC" reports.  These will uniquely identify
2184          * most ALPS touchpads.
2185          */
2186         if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
2187                          PSMOUSE_CMD_SETSCALE21, e7) ||
2188             alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
2189                          PSMOUSE_CMD_RESET_WRAP, ec) ||
2190             alps_exit_command_mode(psmouse))
2191                 return -EIO;
2192
2193         /* Save the Firmware version */
2194         memcpy(priv->fw_ver, ec, 3);
2195
2196         if (alps_match_table(psmouse, priv, e7, ec) == 0) {
2197                 return 0;
2198         } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 &&
2199                    ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) {
2200                 priv->proto_version = ALPS_PROTO_V5;
2201                 alps_set_defaults(priv);
2202                 if (alps_dolphin_get_device_area(psmouse, priv))
2203                         return -EIO;
2204                 else
2205                         return 0;
2206         } else if (ec[0] == 0x88 &&
2207                    ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) {
2208                 priv->proto_version = ALPS_PROTO_V7;
2209                 alps_set_defaults(priv);
2210
2211                 return 0;
2212         } else if (ec[0] == 0x88 && ec[1] == 0x08) {
2213                 priv->proto_version = ALPS_PROTO_V3;
2214                 alps_set_defaults(priv);
2215
2216                 priv->hw_init = alps_hw_init_rushmore_v3;
2217                 priv->decode_fields = alps_decode_rushmore;
2218                 priv->x_bits = 16;
2219                 priv->y_bits = 12;
2220                 priv->flags |= ALPS_IS_RUSHMORE;
2221
2222                 /* hack to make addr_command, nibble_command available */
2223                 psmouse->private = priv;
2224
2225                 if (alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_RUSHMORE))
2226                         priv->flags &= ~ALPS_DUALPOINT;
2227
2228                 return 0;
2229         } else if (ec[0] == 0x88 && ec[1] == 0x07 &&
2230                    ec[2] >= 0x90 && ec[2] <= 0x9d) {
2231                 priv->proto_version = ALPS_PROTO_V3;
2232                 alps_set_defaults(priv);
2233
2234                 return 0;
2235         }
2236
2237         psmouse_dbg(psmouse,
2238                     "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec);
2239
2240         return -EINVAL;
2241 }
2242
2243 static int alps_reconnect(struct psmouse *psmouse)
2244 {
2245         struct alps_data *priv = psmouse->private;
2246
2247         psmouse_reset(psmouse);
2248
2249         if (alps_identify(psmouse, priv) < 0)
2250                 return -1;
2251
2252         return priv->hw_init(psmouse);
2253 }
2254
2255 static void alps_disconnect(struct psmouse *psmouse)
2256 {
2257         struct alps_data *priv = psmouse->private;
2258
2259         psmouse_reset(psmouse);
2260         del_timer_sync(&priv->timer);
2261         input_unregister_device(priv->dev2);
2262         kfree(priv);
2263 }
2264
2265 static void alps_set_abs_params_st(struct alps_data *priv,
2266                                    struct input_dev *dev1)
2267 {
2268         input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0);
2269         input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0);
2270 }
2271
2272 static void alps_set_abs_params_mt(struct alps_data *priv,
2273                                    struct input_dev *dev1)
2274 {
2275         input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0);
2276         input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0);
2277
2278         input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res);
2279         input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res);
2280
2281         input_mt_init_slots(dev1, MAX_TOUCHES, INPUT_MT_POINTER |
2282                 INPUT_MT_DROP_UNUSED | INPUT_MT_TRACK | INPUT_MT_SEMI_MT);
2283
2284         set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit);
2285         set_bit(BTN_TOOL_QUADTAP, dev1->keybit);
2286
2287         /* V7 is real multi-touch */
2288         if (priv->proto_version == ALPS_PROTO_V7)
2289                 clear_bit(INPUT_PROP_SEMI_MT, dev1->propbit);
2290 }
2291
2292 int alps_init(struct psmouse *psmouse)
2293 {
2294         struct alps_data *priv;
2295         struct input_dev *dev1 = psmouse->dev, *dev2;
2296
2297         priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL);
2298         dev2 = input_allocate_device();
2299         if (!priv || !dev2)
2300                 goto init_fail;
2301
2302         priv->dev2 = dev2;
2303         setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse);
2304
2305         psmouse->private = priv;
2306
2307         psmouse_reset(psmouse);
2308
2309         if (alps_identify(psmouse, priv) < 0)
2310                 goto init_fail;
2311
2312         if (priv->hw_init(psmouse))
2313                 goto init_fail;
2314
2315         /*
2316          * Undo part of setup done for us by psmouse core since touchpad
2317          * is not a relative device.
2318          */
2319         __clear_bit(EV_REL, dev1->evbit);
2320         __clear_bit(REL_X, dev1->relbit);
2321         __clear_bit(REL_Y, dev1->relbit);
2322
2323         /*
2324          * Now set up our capabilities.
2325          */
2326         dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY);
2327         dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH);
2328         dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER);
2329         dev1->keybit[BIT_WORD(BTN_LEFT)] |=
2330                 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
2331
2332         dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS);
2333
2334         priv->set_abs_params(priv, dev1);
2335         /* No pressure on V7 */
2336         if (priv->proto_version != ALPS_PROTO_V7)
2337                 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
2338
2339         if (priv->flags & ALPS_WHEEL) {
2340                 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL);
2341                 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL);
2342         }
2343
2344         if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
2345                 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD);
2346                 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK);
2347         }
2348
2349         if (priv->flags & ALPS_FOUR_BUTTONS) {
2350                 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0);
2351                 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1);
2352                 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2);
2353                 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3);
2354         } else if (priv->flags & ALPS_BUTTONPAD) {
2355                 set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit);
2356                 clear_bit(BTN_RIGHT, dev1->keybit);
2357         } else {
2358                 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE);
2359         }
2360
2361         snprintf(priv->phys, sizeof(priv->phys), "%s/input1", psmouse->ps2dev.serio->phys);
2362         dev2->phys = priv->phys;
2363         dev2->name = (priv->flags & ALPS_DUALPOINT) ?
2364                      "DualPoint Stick" : "ALPS PS/2 Device";
2365         dev2->id.bustype = BUS_I8042;
2366         dev2->id.vendor  = 0x0002;
2367         dev2->id.product = PSMOUSE_ALPS;
2368         dev2->id.version = 0x0000;
2369         dev2->dev.parent = &psmouse->ps2dev.serio->dev;
2370
2371         dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
2372         dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
2373         dev2->keybit[BIT_WORD(BTN_LEFT)] =
2374                 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
2375
2376         __set_bit(INPUT_PROP_POINTER, dev2->propbit);
2377         if (priv->flags & ALPS_DUALPOINT)
2378                 __set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit);
2379
2380         if (input_register_device(priv->dev2))
2381                 goto init_fail;
2382
2383         psmouse->protocol_handler = alps_process_byte;
2384         psmouse->poll = alps_poll;
2385         psmouse->disconnect = alps_disconnect;
2386         psmouse->reconnect = alps_reconnect;
2387         psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6;
2388
2389         /* We are having trouble resyncing ALPS touchpads so disable it for now */
2390         psmouse->resync_time = 0;
2391
2392         return 0;
2393
2394 init_fail:
2395         psmouse_reset(psmouse);
2396         input_free_device(dev2);
2397         kfree(priv);
2398         psmouse->private = NULL;
2399         return -1;
2400 }
2401
2402 int alps_detect(struct psmouse *psmouse, bool set_properties)
2403 {
2404         struct alps_data dummy;
2405
2406         if (alps_identify(psmouse, &dummy) < 0)
2407                 return -1;
2408
2409         if (set_properties) {
2410                 psmouse->vendor = "ALPS";
2411                 psmouse->name = dummy.flags & ALPS_DUALPOINT ?
2412                                 "DualPoint TouchPad" : "GlidePoint";
2413                 psmouse->model = dummy.proto_version << 8;
2414         }
2415         return 0;
2416 }
2417