2 * ALPS touchpad PS/2 mouse driver
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>
10 * ALPS detection, tap switching and status querying info is taken from
11 * tpconfig utility (by C. Scott Ananian and Bruce Kall).
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.
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>
28 * Definitions for ALPS version 3 and 4 command mode protocol
30 #define ALPS_V3_X_MAX 2000
31 #define ALPS_V3_Y_MAX 1400
33 #define ALPS_BITMAP_X_BITS 15
34 #define ALPS_BITMAP_Y_BITS 11
36 #define ALPS_CMD_NIBBLE_10 0x01f2
38 static const struct alps_nibble_commands alps_v3_nibble_commands
[] = {
39 { PSMOUSE_CMD_SETPOLL
, 0x00 }, /* 0 */
40 { PSMOUSE_CMD_RESET_DIS
, 0x00 }, /* 1 */
41 { PSMOUSE_CMD_SETSCALE21
, 0x00 }, /* 2 */
42 { PSMOUSE_CMD_SETRATE
, 0x0a }, /* 3 */
43 { PSMOUSE_CMD_SETRATE
, 0x14 }, /* 4 */
44 { PSMOUSE_CMD_SETRATE
, 0x28 }, /* 5 */
45 { PSMOUSE_CMD_SETRATE
, 0x3c }, /* 6 */
46 { PSMOUSE_CMD_SETRATE
, 0x50 }, /* 7 */
47 { PSMOUSE_CMD_SETRATE
, 0x64 }, /* 8 */
48 { PSMOUSE_CMD_SETRATE
, 0xc8 }, /* 9 */
49 { ALPS_CMD_NIBBLE_10
, 0x00 }, /* a */
50 { PSMOUSE_CMD_SETRES
, 0x00 }, /* b */
51 { PSMOUSE_CMD_SETRES
, 0x01 }, /* c */
52 { PSMOUSE_CMD_SETRES
, 0x02 }, /* d */
53 { PSMOUSE_CMD_SETRES
, 0x03 }, /* e */
54 { PSMOUSE_CMD_SETSCALE11
, 0x00 }, /* f */
57 static const struct alps_nibble_commands alps_v4_nibble_commands
[] = {
58 { PSMOUSE_CMD_ENABLE
, 0x00 }, /* 0 */
59 { PSMOUSE_CMD_RESET_DIS
, 0x00 }, /* 1 */
60 { PSMOUSE_CMD_SETSCALE21
, 0x00 }, /* 2 */
61 { PSMOUSE_CMD_SETRATE
, 0x0a }, /* 3 */
62 { PSMOUSE_CMD_SETRATE
, 0x14 }, /* 4 */
63 { PSMOUSE_CMD_SETRATE
, 0x28 }, /* 5 */
64 { PSMOUSE_CMD_SETRATE
, 0x3c }, /* 6 */
65 { PSMOUSE_CMD_SETRATE
, 0x50 }, /* 7 */
66 { PSMOUSE_CMD_SETRATE
, 0x64 }, /* 8 */
67 { PSMOUSE_CMD_SETRATE
, 0xc8 }, /* 9 */
68 { ALPS_CMD_NIBBLE_10
, 0x00 }, /* a */
69 { PSMOUSE_CMD_SETRES
, 0x00 }, /* b */
70 { PSMOUSE_CMD_SETRES
, 0x01 }, /* c */
71 { PSMOUSE_CMD_SETRES
, 0x02 }, /* d */
72 { PSMOUSE_CMD_SETRES
, 0x03 }, /* e */
73 { PSMOUSE_CMD_SETSCALE11
, 0x00 }, /* f */
77 #define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */
78 #define ALPS_PASS 0x04 /* device has a pass-through port */
80 #define ALPS_WHEEL 0x08 /* hardware wheel present */
81 #define ALPS_FW_BK_1 0x10 /* front & back buttons present */
82 #define ALPS_FW_BK_2 0x20 /* front & back buttons present */
83 #define ALPS_FOUR_BUTTONS 0x40 /* 4 direction button present */
84 #define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with
87 static const struct alps_model_info alps_model_data
[] = {
88 { { 0x32, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2
, 0xf8, 0xf8, ALPS_PASS
| ALPS_DUALPOINT
}, /* Toshiba Salellite Pro M10 */
89 { { 0x33, 0x02, 0x0a }, 0x00, ALPS_PROTO_V1
, 0x88, 0xf8, 0 }, /* UMAX-530T */
90 { { 0x53, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2
, 0xf8, 0xf8, 0 },
91 { { 0x53, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2
, 0xf8, 0xf8, 0 },
92 { { 0x60, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2
, 0xf8, 0xf8, 0 }, /* HP ze1115 */
93 { { 0x63, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2
, 0xf8, 0xf8, 0 },
94 { { 0x63, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2
, 0xf8, 0xf8, 0 },
95 { { 0x63, 0x02, 0x28 }, 0x00, ALPS_PROTO_V2
, 0xf8, 0xf8, ALPS_FW_BK_2
}, /* Fujitsu Siemens S6010 */
96 { { 0x63, 0x02, 0x3c }, 0x00, ALPS_PROTO_V2
, 0x8f, 0x8f, ALPS_WHEEL
}, /* Toshiba Satellite S2400-103 */
97 { { 0x63, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2
, 0xef, 0xef, ALPS_FW_BK_1
}, /* NEC Versa L320 */
98 { { 0x63, 0x02, 0x64 }, 0x00, ALPS_PROTO_V2
, 0xf8, 0xf8, 0 },
99 { { 0x63, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2
, 0xf8, 0xf8, ALPS_PASS
| ALPS_DUALPOINT
}, /* Dell Latitude D800 */
100 { { 0x73, 0x00, 0x0a }, 0x00, ALPS_PROTO_V2
, 0xf8, 0xf8, ALPS_DUALPOINT
}, /* ThinkPad R61 8918-5QG */
101 { { 0x73, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2
, 0xf8, 0xf8, 0 },
102 { { 0x73, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2
, 0xf8, 0xf8, ALPS_FW_BK_2
}, /* Ahtec Laptop */
103 { { 0x20, 0x02, 0x0e }, 0x00, ALPS_PROTO_V2
, 0xf8, 0xf8, ALPS_PASS
| ALPS_DUALPOINT
}, /* XXX */
104 { { 0x22, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2
, 0xf8, 0xf8, ALPS_PASS
| ALPS_DUALPOINT
},
105 { { 0x22, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2
, 0xff, 0xff, ALPS_PASS
| ALPS_DUALPOINT
}, /* Dell Latitude D600 */
106 /* Dell Latitude E5500, E6400, E6500, Precision M4400 */
107 { { 0x62, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2
, 0xcf, 0xcf,
108 ALPS_PASS
| ALPS_DUALPOINT
| ALPS_PS2_INTERLEAVED
},
109 { { 0x73, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2
, 0xcf, 0xcf, ALPS_FOUR_BUTTONS
}, /* Dell Vostro 1400 */
110 { { 0x52, 0x01, 0x14 }, 0x00, ALPS_PROTO_V2
, 0xff, 0xff,
111 ALPS_PASS
| ALPS_DUALPOINT
| ALPS_PS2_INTERLEAVED
}, /* Toshiba Tecra A11-11L */
112 { { 0x73, 0x02, 0x64 }, 0x9b, ALPS_PROTO_V3
, 0x8f, 0x8f, ALPS_DUALPOINT
},
113 { { 0x73, 0x02, 0x64 }, 0x9d, ALPS_PROTO_V3
, 0x8f, 0x8f, ALPS_DUALPOINT
},
114 { { 0x73, 0x02, 0x64 }, 0x8a, ALPS_PROTO_V4
, 0x8f, 0x8f, 0 },
117 static void alps_set_abs_params_st(struct alps_data
*priv
,
118 struct input_dev
*dev1
);
119 static void alps_set_abs_params_mt(struct alps_data
*priv
,
120 struct input_dev
*dev1
);
123 * XXX - this entry is suspicious. First byte has zero lower nibble,
124 * which is what a normal mouse would report. Also, the value 0x0e
125 * isn't valid per PS/2 spec.
128 /* Packet formats are described in Documentation/input/alps.txt */
130 static bool alps_is_valid_first_byte(struct alps_data
*priv
,
133 return (data
& priv
->mask0
) == priv
->byte0
;
136 static void alps_report_buttons(struct psmouse
*psmouse
,
137 struct input_dev
*dev1
, struct input_dev
*dev2
,
138 int left
, int right
, int middle
)
140 struct input_dev
*dev
;
143 * If shared button has already been reported on the
144 * other device (dev2) then this event should be also
145 * sent through that device.
147 dev
= test_bit(BTN_LEFT
, dev2
->key
) ? dev2
: dev1
;
148 input_report_key(dev
, BTN_LEFT
, left
);
150 dev
= test_bit(BTN_RIGHT
, dev2
->key
) ? dev2
: dev1
;
151 input_report_key(dev
, BTN_RIGHT
, right
);
153 dev
= test_bit(BTN_MIDDLE
, dev2
->key
) ? dev2
: dev1
;
154 input_report_key(dev
, BTN_MIDDLE
, middle
);
157 * Sync the _other_ device now, we'll do the first
158 * device later once we report the rest of the events.
163 static void alps_process_packet_v1_v2(struct psmouse
*psmouse
)
165 struct alps_data
*priv
= psmouse
->private;
166 unsigned char *packet
= psmouse
->packet
;
167 struct input_dev
*dev
= psmouse
->dev
;
168 struct input_dev
*dev2
= priv
->dev2
;
169 int x
, y
, z
, ges
, fin
, left
, right
, middle
;
170 int back
= 0, forward
= 0;
172 if (priv
->proto_version
== ALPS_PROTO_V1
) {
173 left
= packet
[2] & 0x10;
174 right
= packet
[2] & 0x08;
176 x
= packet
[1] | ((packet
[0] & 0x07) << 7);
177 y
= packet
[4] | ((packet
[3] & 0x07) << 7);
180 left
= packet
[3] & 1;
181 right
= packet
[3] & 2;
182 middle
= packet
[3] & 4;
183 x
= packet
[1] | ((packet
[2] & 0x78) << (7 - 3));
184 y
= packet
[4] | ((packet
[3] & 0x70) << (7 - 4));
188 if (priv
->flags
& ALPS_FW_BK_1
) {
189 back
= packet
[0] & 0x10;
190 forward
= packet
[2] & 4;
193 if (priv
->flags
& ALPS_FW_BK_2
) {
194 back
= packet
[3] & 4;
195 forward
= packet
[2] & 4;
196 if ((middle
= forward
&& back
))
203 if ((priv
->flags
& ALPS_DUALPOINT
) && z
== 127) {
204 input_report_rel(dev2
, REL_X
, (x
> 383 ? (x
- 768) : x
));
205 input_report_rel(dev2
, REL_Y
, -(y
> 255 ? (y
- 512) : y
));
207 alps_report_buttons(psmouse
, dev2
, dev
, left
, right
, middle
);
213 alps_report_buttons(psmouse
, dev
, dev2
, left
, right
, middle
);
215 /* Convert hardware tap to a reasonable Z value */
220 * A "tap and drag" operation is reported by the hardware as a transition
221 * from (!fin && ges) to (fin && ges). This should be translated to the
222 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually.
224 if (ges
&& fin
&& !priv
->prev_fin
) {
225 input_report_abs(dev
, ABS_X
, x
);
226 input_report_abs(dev
, ABS_Y
, y
);
227 input_report_abs(dev
, ABS_PRESSURE
, 0);
228 input_report_key(dev
, BTN_TOOL_FINGER
, 0);
231 priv
->prev_fin
= fin
;
234 input_report_key(dev
, BTN_TOUCH
, 1);
236 input_report_key(dev
, BTN_TOUCH
, 0);
239 input_report_abs(dev
, ABS_X
, x
);
240 input_report_abs(dev
, ABS_Y
, y
);
243 input_report_abs(dev
, ABS_PRESSURE
, z
);
244 input_report_key(dev
, BTN_TOOL_FINGER
, z
> 0);
246 if (priv
->flags
& ALPS_WHEEL
)
247 input_report_rel(dev
, REL_WHEEL
, ((packet
[2] << 1) & 0x08) - ((packet
[0] >> 4) & 0x07));
249 if (priv
->flags
& (ALPS_FW_BK_1
| ALPS_FW_BK_2
)) {
250 input_report_key(dev
, BTN_FORWARD
, forward
);
251 input_report_key(dev
, BTN_BACK
, back
);
254 if (priv
->flags
& ALPS_FOUR_BUTTONS
) {
255 input_report_key(dev
, BTN_0
, packet
[2] & 4);
256 input_report_key(dev
, BTN_1
, packet
[0] & 0x10);
257 input_report_key(dev
, BTN_2
, packet
[3] & 4);
258 input_report_key(dev
, BTN_3
, packet
[0] & 0x20);
265 * Process bitmap data from v3 and v4 protocols. Returns the number of
266 * fingers detected. A return value of 0 means at least one of the
269 * The bitmaps don't have enough data to track fingers, so this function
270 * only generates points representing a bounding box of all contacts.
271 * These points are returned in x1, y1, x2, and y2 when the return value
274 static int alps_process_bitmap(unsigned int x_map
, unsigned int y_map
,
275 int *x1
, int *y1
, int *x2
, int *y2
)
277 struct alps_bitmap_point
{
282 int fingers_x
= 0, fingers_y
= 0, fingers
;
283 int i
, bit
, prev_bit
;
284 struct alps_bitmap_point x_low
= {0,}, x_high
= {0,};
285 struct alps_bitmap_point y_low
= {0,}, y_high
= {0,};
286 struct alps_bitmap_point
*point
;
288 if (!x_map
|| !y_map
)
291 *x1
= *y1
= *x2
= *y2
= 0;
295 for (i
= 0; x_map
!= 0; i
++, x_map
>>= 1) {
299 point
->start_bit
= i
;
313 * y bitmap is reversed for what we need (lower positions are in
314 * higher bits), so we process from the top end.
316 y_map
= y_map
<< (sizeof(y_map
) * BITS_PER_BYTE
- ALPS_BITMAP_Y_BITS
);
319 for (i
= 0; y_map
!= 0; i
++, y_map
<<= 1) {
320 bit
= y_map
& (1 << (sizeof(y_map
) * BITS_PER_BYTE
- 1));
323 point
->start_bit
= i
;
337 * Fingers can overlap, so we use the maximum count of fingers
338 * on either axis as the finger count.
340 fingers
= max(fingers_x
, fingers_y
);
343 * If total fingers is > 1 but either axis reports only a single
344 * contact, we have overlapping or adjacent fingers. For the
345 * purposes of creating a bounding box, divide the single contact
346 * (roughly) equally between the two points.
349 if (fingers_x
== 1) {
350 i
= x_low
.num_bits
/ 2;
351 x_low
.num_bits
= x_low
.num_bits
- i
;
352 x_high
.start_bit
= x_low
.start_bit
+ i
;
353 x_high
.num_bits
= max(i
, 1);
354 } else if (fingers_y
== 1) {
355 i
= y_low
.num_bits
/ 2;
356 y_low
.num_bits
= y_low
.num_bits
- i
;
357 y_high
.start_bit
= y_low
.start_bit
+ i
;
358 y_high
.num_bits
= max(i
, 1);
362 *x1
= (ALPS_V3_X_MAX
* (2 * x_low
.start_bit
+ x_low
.num_bits
- 1)) /
363 (2 * (ALPS_BITMAP_X_BITS
- 1));
364 *y1
= (ALPS_V3_Y_MAX
* (2 * y_low
.start_bit
+ y_low
.num_bits
- 1)) /
365 (2 * (ALPS_BITMAP_Y_BITS
- 1));
368 *x2
= (ALPS_V3_X_MAX
* (2 * x_high
.start_bit
+ x_high
.num_bits
- 1)) /
369 (2 * (ALPS_BITMAP_X_BITS
- 1));
370 *y2
= (ALPS_V3_Y_MAX
* (2 * y_high
.start_bit
+ y_high
.num_bits
- 1)) /
371 (2 * (ALPS_BITMAP_Y_BITS
- 1));
377 static void alps_set_slot(struct input_dev
*dev
, int slot
, bool active
,
380 input_mt_slot(dev
, slot
);
381 input_mt_report_slot_state(dev
, MT_TOOL_FINGER
, active
);
383 input_report_abs(dev
, ABS_MT_POSITION_X
, x
);
384 input_report_abs(dev
, ABS_MT_POSITION_Y
, y
);
388 static void alps_report_semi_mt_data(struct input_dev
*dev
, int num_fingers
,
389 int x1
, int y1
, int x2
, int y2
)
391 alps_set_slot(dev
, 0, num_fingers
!= 0, x1
, y1
);
392 alps_set_slot(dev
, 1, num_fingers
== 2, x2
, y2
);
395 static void alps_process_trackstick_packet_v3(struct psmouse
*psmouse
)
397 struct alps_data
*priv
= psmouse
->private;
398 unsigned char *packet
= psmouse
->packet
;
399 struct input_dev
*dev
= priv
->dev2
;
400 int x
, y
, z
, left
, right
, middle
;
402 /* Sanity check packet */
403 if (!(packet
[0] & 0x40)) {
404 psmouse_dbg(psmouse
, "Bad trackstick packet, discarding\n");
409 * There's a special packet that seems to indicate the end
410 * of a stream of trackstick data. Filter these out.
412 if (packet
[1] == 0x7f && packet
[2] == 0x7f && packet
[4] == 0x7f)
415 x
= (s8
)(((packet
[0] & 0x20) << 2) | (packet
[1] & 0x7f));
416 y
= (s8
)(((packet
[0] & 0x10) << 3) | (packet
[2] & 0x7f));
417 z
= (packet
[4] & 0x7c) >> 2;
420 * The x and y values tend to be quite large, and when used
421 * alone the trackstick is difficult to use. Scale them down
427 input_report_rel(dev
, REL_X
, x
);
428 input_report_rel(dev
, REL_Y
, -y
);
431 * Most ALPS models report the trackstick buttons in the touchpad
432 * packets, but a few report them here. No reliable way has been
433 * found to differentiate between the models upfront, so we enable
434 * the quirk in response to seeing a button press in the trackstick
437 left
= packet
[3] & 0x01;
438 right
= packet
[3] & 0x02;
439 middle
= packet
[3] & 0x04;
441 if (!(priv
->quirks
& ALPS_QUIRK_TRACKSTICK_BUTTONS
) &&
442 (left
|| right
|| middle
))
443 priv
->quirks
|= ALPS_QUIRK_TRACKSTICK_BUTTONS
;
445 if (priv
->quirks
& ALPS_QUIRK_TRACKSTICK_BUTTONS
) {
446 input_report_key(dev
, BTN_LEFT
, left
);
447 input_report_key(dev
, BTN_RIGHT
, right
);
448 input_report_key(dev
, BTN_MIDDLE
, middle
);
455 static void alps_process_touchpad_packet_v3(struct psmouse
*psmouse
)
457 struct alps_data
*priv
= psmouse
->private;
458 unsigned char *packet
= psmouse
->packet
;
459 struct input_dev
*dev
= psmouse
->dev
;
460 struct input_dev
*dev2
= priv
->dev2
;
462 int left
, right
, middle
;
463 int x1
= 0, y1
= 0, x2
= 0, y2
= 0;
464 int fingers
= 0, bmap_fingers
;
465 unsigned int x_bitmap
, y_bitmap
;
468 * There's no single feature of touchpad position and bitmap packets
469 * that can be used to distinguish between them. We rely on the fact
470 * that a bitmap packet should always follow a position packet with
471 * bit 6 of packet[4] set.
473 if (priv
->multi_packet
) {
475 * Sometimes a position packet will indicate a multi-packet
476 * sequence, but then what follows is another position
477 * packet. Check for this, and when it happens process the
478 * position packet as usual.
480 if (packet
[0] & 0x40) {
481 fingers
= (packet
[5] & 0x3) + 1;
482 x_bitmap
= ((packet
[4] & 0x7e) << 8) |
483 ((packet
[1] & 0x7f) << 2) |
484 ((packet
[0] & 0x30) >> 4);
485 y_bitmap
= ((packet
[3] & 0x70) << 4) |
486 ((packet
[2] & 0x7f) << 1) |
489 bmap_fingers
= alps_process_bitmap(x_bitmap
, y_bitmap
,
493 * We shouldn't report more than one finger if
494 * we don't have two coordinates.
496 if (fingers
> 1 && bmap_fingers
< 2)
497 fingers
= bmap_fingers
;
499 /* Now process position packet */
500 packet
= priv
->multi_data
;
502 priv
->multi_packet
= 0;
507 * Bit 6 of byte 0 is not usually set in position packets. The only
508 * times it seems to be set is in situations where the data is
509 * suspect anyway, e.g. a palm resting flat on the touchpad. Given
510 * this combined with the fact that this bit is useful for filtering
511 * out misidentified bitmap packets, we reject anything with this
514 if (packet
[0] & 0x40)
517 if (!priv
->multi_packet
&& (packet
[4] & 0x40)) {
518 priv
->multi_packet
= 1;
519 memcpy(priv
->multi_data
, packet
, sizeof(priv
->multi_data
));
523 priv
->multi_packet
= 0;
525 left
= packet
[3] & 0x01;
526 right
= packet
[3] & 0x02;
527 middle
= packet
[3] & 0x04;
529 x
= ((packet
[1] & 0x7f) << 4) | ((packet
[4] & 0x30) >> 2) |
530 ((packet
[0] & 0x30) >> 4);
531 y
= ((packet
[2] & 0x7f) << 4) | (packet
[4] & 0x0f);
532 z
= packet
[5] & 0x7f;
535 * Sometimes the hardware sends a single packet with z = 0
536 * in the middle of a stream. Real releases generate packets
537 * with x, y, and z all zero, so these seem to be flukes.
544 * If we don't have MT data or the bitmaps were empty, we have
545 * to rely on ST data.
550 fingers
= z
> 0 ? 1 : 0;
554 input_report_key(dev
, BTN_TOUCH
, 1);
556 input_report_key(dev
, BTN_TOUCH
, 0);
558 alps_report_semi_mt_data(dev
, fingers
, x1
, y1
, x2
, y2
);
560 input_mt_report_finger_count(dev
, fingers
);
562 input_report_key(dev
, BTN_LEFT
, left
);
563 input_report_key(dev
, BTN_RIGHT
, right
);
564 input_report_key(dev
, BTN_MIDDLE
, middle
);
567 input_report_abs(dev
, ABS_X
, x
);
568 input_report_abs(dev
, ABS_Y
, y
);
570 input_report_abs(dev
, ABS_PRESSURE
, z
);
574 if (!(priv
->quirks
& ALPS_QUIRK_TRACKSTICK_BUTTONS
)) {
575 left
= packet
[3] & 0x10;
576 right
= packet
[3] & 0x20;
577 middle
= packet
[3] & 0x40;
579 input_report_key(dev2
, BTN_LEFT
, left
);
580 input_report_key(dev2
, BTN_RIGHT
, right
);
581 input_report_key(dev2
, BTN_MIDDLE
, middle
);
586 static void alps_process_packet_v3(struct psmouse
*psmouse
)
588 unsigned char *packet
= psmouse
->packet
;
591 * v3 protocol packets come in three types, two representing
592 * touchpad data and one representing trackstick data.
593 * Trackstick packets seem to be distinguished by always
594 * having 0x3f in the last byte. This value has never been
595 * observed in the last byte of either of the other types
598 if (packet
[5] == 0x3f) {
599 alps_process_trackstick_packet_v3(psmouse
);
603 alps_process_touchpad_packet_v3(psmouse
);
606 static void alps_process_packet_v4(struct psmouse
*psmouse
)
608 struct alps_data
*priv
= psmouse
->private;
609 unsigned char *packet
= psmouse
->packet
;
610 struct input_dev
*dev
= psmouse
->dev
;
616 unsigned int x_bitmap
, y_bitmap
;
619 * v4 has a 6-byte encoding for bitmap data, but this data is
620 * broken up between 3 normal packets. Use priv->multi_packet to
621 * track our position in the bitmap packet.
623 if (packet
[6] & 0x40) {
624 /* sync, reset position */
625 priv
->multi_packet
= 0;
628 if (WARN_ON_ONCE(priv
->multi_packet
> 2))
631 offset
= 2 * priv
->multi_packet
;
632 priv
->multi_data
[offset
] = packet
[6];
633 priv
->multi_data
[offset
+ 1] = packet
[7];
635 if (++priv
->multi_packet
> 2) {
636 priv
->multi_packet
= 0;
638 x_bitmap
= ((priv
->multi_data
[2] & 0x1f) << 10) |
639 ((priv
->multi_data
[3] & 0x60) << 3) |
640 ((priv
->multi_data
[0] & 0x3f) << 2) |
641 ((priv
->multi_data
[1] & 0x60) >> 5);
642 y_bitmap
= ((priv
->multi_data
[5] & 0x01) << 10) |
643 ((priv
->multi_data
[3] & 0x1f) << 5) |
644 (priv
->multi_data
[1] & 0x1f);
646 fingers
= alps_process_bitmap(x_bitmap
, y_bitmap
,
650 priv
->fingers
= fingers
;
657 left
= packet
[4] & 0x01;
658 right
= packet
[4] & 0x02;
660 x
= ((packet
[1] & 0x7f) << 4) | ((packet
[3] & 0x30) >> 2) |
661 ((packet
[0] & 0x30) >> 4);
662 y
= ((packet
[2] & 0x7f) << 4) | (packet
[3] & 0x0f);
663 z
= packet
[5] & 0x7f;
666 * If there were no contacts in the bitmap, use ST
667 * points in MT reports.
668 * If there were two contacts or more, report MT data.
670 if (priv
->fingers
< 2) {
673 fingers
= z
> 0 ? 1 : 0;
675 fingers
= priv
->fingers
;
683 input_report_key(dev
, BTN_TOUCH
, 1);
685 input_report_key(dev
, BTN_TOUCH
, 0);
687 alps_report_semi_mt_data(dev
, fingers
, x1
, y1
, x2
, y2
);
689 input_mt_report_finger_count(dev
, fingers
);
691 input_report_key(dev
, BTN_LEFT
, left
);
692 input_report_key(dev
, BTN_RIGHT
, right
);
695 input_report_abs(dev
, ABS_X
, x
);
696 input_report_abs(dev
, ABS_Y
, y
);
698 input_report_abs(dev
, ABS_PRESSURE
, z
);
703 static void alps_report_bare_ps2_packet(struct psmouse
*psmouse
,
704 unsigned char packet
[],
707 struct alps_data
*priv
= psmouse
->private;
708 struct input_dev
*dev2
= priv
->dev2
;
711 alps_report_buttons(psmouse
, dev2
, psmouse
->dev
,
712 packet
[0] & 1, packet
[0] & 2, packet
[0] & 4);
714 input_report_rel(dev2
, REL_X
,
715 packet
[1] ? packet
[1] - ((packet
[0] << 4) & 0x100) : 0);
716 input_report_rel(dev2
, REL_Y
,
717 packet
[2] ? ((packet
[0] << 3) & 0x100) - packet
[2] : 0);
722 static psmouse_ret_t
alps_handle_interleaved_ps2(struct psmouse
*psmouse
)
724 struct alps_data
*priv
= psmouse
->private;
726 if (psmouse
->pktcnt
< 6)
727 return PSMOUSE_GOOD_DATA
;
729 if (psmouse
->pktcnt
== 6) {
731 * Start a timer to flush the packet if it ends up last
732 * 6-byte packet in the stream. Timer needs to fire
733 * psmouse core times out itself. 20 ms should be enough
734 * to decide if we are getting more data or not.
736 mod_timer(&priv
->timer
, jiffies
+ msecs_to_jiffies(20));
737 return PSMOUSE_GOOD_DATA
;
740 del_timer(&priv
->timer
);
742 if (psmouse
->packet
[6] & 0x80) {
745 * Highest bit is set - that means we either had
746 * complete ALPS packet and this is start of the
747 * next packet or we got garbage.
750 if (((psmouse
->packet
[3] |
752 psmouse
->packet
[5]) & 0x80) ||
753 (!alps_is_valid_first_byte(priv
, psmouse
->packet
[6]))) {
755 "refusing packet %4ph (suspected interleaved ps/2)\n",
756 psmouse
->packet
+ 3);
757 return PSMOUSE_BAD_DATA
;
760 priv
->process_packet(psmouse
);
762 /* Continue with the next packet */
763 psmouse
->packet
[0] = psmouse
->packet
[6];
769 * High bit is 0 - that means that we indeed got a PS/2
770 * packet in the middle of ALPS packet.
772 * There is also possibility that we got 6-byte ALPS
773 * packet followed by 3-byte packet from trackpoint. We
774 * can not distinguish between these 2 scenarios but
775 * because the latter is unlikely to happen in course of
776 * normal operation (user would need to press all
777 * buttons on the pad and start moving trackpoint
778 * without touching the pad surface) we assume former.
779 * Even if we are wrong the wost thing that would happen
780 * the cursor would jump but we should not get protocol
781 * de-synchronization.
784 alps_report_bare_ps2_packet(psmouse
, &psmouse
->packet
[3],
788 * Continue with the standard ALPS protocol handling,
789 * but make sure we won't process it as an interleaved
790 * packet again, which may happen if all buttons are
791 * pressed. To avoid this let's reset the 4th bit which
794 psmouse
->packet
[3] = psmouse
->packet
[6] & 0xf7;
798 return PSMOUSE_GOOD_DATA
;
801 static void alps_flush_packet(unsigned long data
)
803 struct psmouse
*psmouse
= (struct psmouse
*)data
;
804 struct alps_data
*priv
= psmouse
->private;
806 serio_pause_rx(psmouse
->ps2dev
.serio
);
808 if (psmouse
->pktcnt
== psmouse
->pktsize
) {
811 * We did not any more data in reasonable amount of time.
812 * Validate the last 3 bytes and process as a standard
815 if ((psmouse
->packet
[3] |
817 psmouse
->packet
[5]) & 0x80) {
819 "refusing packet %3ph (suspected interleaved ps/2)\n",
820 psmouse
->packet
+ 3);
822 priv
->process_packet(psmouse
);
827 serio_continue_rx(psmouse
->ps2dev
.serio
);
830 static psmouse_ret_t
alps_process_byte(struct psmouse
*psmouse
)
832 struct alps_data
*priv
= psmouse
->private;
834 if ((psmouse
->packet
[0] & 0xc8) == 0x08) { /* PS/2 packet */
835 if (psmouse
->pktcnt
== 3) {
836 alps_report_bare_ps2_packet(psmouse
, psmouse
->packet
,
838 return PSMOUSE_FULL_PACKET
;
840 return PSMOUSE_GOOD_DATA
;
843 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */
845 if ((priv
->flags
& ALPS_PS2_INTERLEAVED
) &&
846 psmouse
->pktcnt
>= 4 && (psmouse
->packet
[3] & 0x0f) == 0x0f) {
847 return alps_handle_interleaved_ps2(psmouse
);
850 if (!alps_is_valid_first_byte(priv
, psmouse
->packet
[0])) {
852 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n",
853 psmouse
->packet
[0], priv
->mask0
, priv
->byte0
);
854 return PSMOUSE_BAD_DATA
;
857 /* Bytes 2 - pktsize should have 0 in the highest bit */
858 if (psmouse
->pktcnt
>= 2 && psmouse
->pktcnt
<= psmouse
->pktsize
&&
859 (psmouse
->packet
[psmouse
->pktcnt
- 1] & 0x80)) {
860 psmouse_dbg(psmouse
, "refusing packet[%i] = %x\n",
862 psmouse
->packet
[psmouse
->pktcnt
- 1]);
863 return PSMOUSE_BAD_DATA
;
866 if (psmouse
->pktcnt
== psmouse
->pktsize
) {
867 priv
->process_packet(psmouse
);
868 return PSMOUSE_FULL_PACKET
;
871 return PSMOUSE_GOOD_DATA
;
874 static int alps_command_mode_send_nibble(struct psmouse
*psmouse
, int nibble
)
876 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
877 struct alps_data
*priv
= psmouse
->private;
879 unsigned char *param
;
880 unsigned char dummy
[4];
882 BUG_ON(nibble
> 0xf);
884 command
= priv
->nibble_commands
[nibble
].command
;
885 param
= (command
& 0x0f00) ?
886 dummy
: (unsigned char *)&priv
->nibble_commands
[nibble
].data
;
888 if (ps2_command(ps2dev
, param
, command
))
894 static int alps_command_mode_set_addr(struct psmouse
*psmouse
, int addr
)
896 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
897 struct alps_data
*priv
= psmouse
->private;
900 if (ps2_command(ps2dev
, NULL
, priv
->addr_command
))
903 for (i
= 12; i
>= 0; i
-= 4) {
904 nibble
= (addr
>> i
) & 0xf;
905 if (alps_command_mode_send_nibble(psmouse
, nibble
))
912 static int __alps_command_mode_read_reg(struct psmouse
*psmouse
, int addr
)
914 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
915 unsigned char param
[4];
917 if (ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETINFO
))
921 * The address being read is returned in the first two bytes
922 * of the result. Check that this address matches the expected
925 if (addr
!= ((param
[0] << 8) | param
[1]))
931 static int alps_command_mode_read_reg(struct psmouse
*psmouse
, int addr
)
933 if (alps_command_mode_set_addr(psmouse
, addr
))
935 return __alps_command_mode_read_reg(psmouse
, addr
);
938 static int __alps_command_mode_write_reg(struct psmouse
*psmouse
, u8 value
)
940 if (alps_command_mode_send_nibble(psmouse
, (value
>> 4) & 0xf))
942 if (alps_command_mode_send_nibble(psmouse
, value
& 0xf))
947 static int alps_command_mode_write_reg(struct psmouse
*psmouse
, int addr
,
950 if (alps_command_mode_set_addr(psmouse
, addr
))
952 return __alps_command_mode_write_reg(psmouse
, value
);
955 static int alps_rpt_cmd(struct psmouse
*psmouse
, int init_command
,
956 int repeated_command
, unsigned char *param
)
958 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
961 if (init_command
&& ps2_command(ps2dev
, param
, init_command
))
964 if (ps2_command(ps2dev
, NULL
, repeated_command
) ||
965 ps2_command(ps2dev
, NULL
, repeated_command
) ||
966 ps2_command(ps2dev
, NULL
, repeated_command
))
969 param
[0] = param
[1] = param
[2] = 0xff;
970 if (ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETINFO
))
973 psmouse_dbg(psmouse
, "%2.2X report: %2.2x %2.2x %2.2x\n",
974 repeated_command
, param
[0], param
[1], param
[2]);
978 static int alps_enter_command_mode(struct psmouse
*psmouse
,
981 unsigned char param
[4];
983 if (alps_rpt_cmd(psmouse
, 0, PSMOUSE_CMD_RESET_WRAP
, param
)) {
984 psmouse_err(psmouse
, "failed to enter command mode\n");
988 if (param
[0] != 0x88 && param
[1] != 0x07) {
990 "unknown response while entering command mode\n");
999 static inline int alps_exit_command_mode(struct psmouse
*psmouse
)
1001 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
1002 if (ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSTREAM
))
1008 * For DualPoint devices select the device that should respond to
1009 * subsequent commands. It looks like glidepad is behind stickpointer,
1010 * I'd thought it would be other way around...
1012 static int alps_passthrough_mode_v2(struct psmouse
*psmouse
, bool enable
)
1014 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
1015 int cmd
= enable
? PSMOUSE_CMD_SETSCALE21
: PSMOUSE_CMD_SETSCALE11
;
1017 if (ps2_command(ps2dev
, NULL
, cmd
) ||
1018 ps2_command(ps2dev
, NULL
, cmd
) ||
1019 ps2_command(ps2dev
, NULL
, cmd
) ||
1020 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_DISABLE
))
1023 /* we may get 3 more bytes, just ignore them */
1024 ps2_drain(ps2dev
, 3, 100);
1029 static int alps_absolute_mode_v1_v2(struct psmouse
*psmouse
)
1031 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
1033 /* Try ALPS magic knock - 4 disable before enable */
1034 if (ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_DISABLE
) ||
1035 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_DISABLE
) ||
1036 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_DISABLE
) ||
1037 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_DISABLE
) ||
1038 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_ENABLE
))
1042 * Switch mouse to poll (remote) mode so motion data will not
1045 return ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_SETPOLL
);
1048 static int alps_get_status(struct psmouse
*psmouse
, char *param
)
1050 /* Get status: 0xF5 0xF5 0xF5 0xE9 */
1051 if (alps_rpt_cmd(psmouse
, 0, PSMOUSE_CMD_DISABLE
, param
))
1058 * Turn touchpad tapping on or off. The sequences are:
1059 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable,
1060 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable.
1061 * My guess that 0xE9 (GetInfo) is here as a sync point.
1062 * For models that also have stickpointer (DualPoints) its tapping
1063 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but
1064 * we don't fiddle with it.
1066 static int alps_tap_mode(struct psmouse
*psmouse
, int enable
)
1068 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
1069 int cmd
= enable
? PSMOUSE_CMD_SETRATE
: PSMOUSE_CMD_SETRES
;
1070 unsigned char tap_arg
= enable
? 0x0A : 0x00;
1071 unsigned char param
[4];
1073 if (ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETINFO
) ||
1074 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_DISABLE
) ||
1075 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_DISABLE
) ||
1076 ps2_command(ps2dev
, &tap_arg
, cmd
))
1079 if (alps_get_status(psmouse
, param
))
1086 * alps_poll() - poll the touchpad for current motion packet.
1089 static int alps_poll(struct psmouse
*psmouse
)
1091 struct alps_data
*priv
= psmouse
->private;
1092 unsigned char buf
[sizeof(psmouse
->packet
)];
1095 if (priv
->flags
& ALPS_PASS
)
1096 alps_passthrough_mode_v2(psmouse
, true);
1098 poll_failed
= ps2_command(&psmouse
->ps2dev
, buf
,
1099 PSMOUSE_CMD_POLL
| (psmouse
->pktsize
<< 8)) < 0;
1101 if (priv
->flags
& ALPS_PASS
)
1102 alps_passthrough_mode_v2(psmouse
, false);
1104 if (poll_failed
|| (buf
[0] & priv
->mask0
) != priv
->byte0
)
1107 if ((psmouse
->badbyte
& 0xc8) == 0x08) {
1109 * Poll the track stick ...
1111 if (ps2_command(&psmouse
->ps2dev
, buf
, PSMOUSE_CMD_POLL
| (3 << 8)))
1115 memcpy(psmouse
->packet
, buf
, sizeof(buf
));
1119 static int alps_hw_init_v1_v2(struct psmouse
*psmouse
)
1121 struct alps_data
*priv
= psmouse
->private;
1123 if ((priv
->flags
& ALPS_PASS
) &&
1124 alps_passthrough_mode_v2(psmouse
, true)) {
1128 if (alps_tap_mode(psmouse
, true)) {
1129 psmouse_warn(psmouse
, "Failed to enable hardware tapping\n");
1133 if (alps_absolute_mode_v1_v2(psmouse
)) {
1134 psmouse_err(psmouse
, "Failed to enable absolute mode\n");
1138 if ((priv
->flags
& ALPS_PASS
) &&
1139 alps_passthrough_mode_v2(psmouse
, false)) {
1143 /* ALPS needs stream mode, otherwise it won't report any data */
1144 if (ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_SETSTREAM
)) {
1145 psmouse_err(psmouse
, "Failed to enable stream mode\n");
1153 * Enable or disable passthrough mode to the trackstick. Must be in
1154 * command mode when calling this function.
1156 static int alps_passthrough_mode_v3(struct psmouse
*psmouse
, bool enable
)
1160 reg_val
= alps_command_mode_read_reg(psmouse
, 0x0008);
1169 if (__alps_command_mode_write_reg(psmouse
, reg_val
))
1175 /* Must be in command mode when calling this function */
1176 static int alps_absolute_mode_v3(struct psmouse
*psmouse
)
1180 reg_val
= alps_command_mode_read_reg(psmouse
, 0x0004);
1185 if (__alps_command_mode_write_reg(psmouse
, reg_val
))
1191 static int alps_hw_init_v3(struct psmouse
*psmouse
)
1193 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
1195 unsigned char param
[4];
1197 if (alps_enter_command_mode(psmouse
, NULL
))
1200 /* Check for trackstick */
1201 reg_val
= alps_command_mode_read_reg(psmouse
, 0x0008);
1204 if (reg_val
& 0x80) {
1205 if (alps_passthrough_mode_v3(psmouse
, true))
1207 if (alps_exit_command_mode(psmouse
))
1211 * E7 report for the trackstick
1213 * There have been reports of failures to seem to trace back
1214 * to the above trackstick check failing. When these occur
1215 * this E7 report fails, so when that happens we continue
1216 * with the assumption that there isn't a trackstick after
1220 if (ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE21
) ||
1221 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE21
) ||
1222 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE21
) ||
1223 ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETINFO
)) {
1224 psmouse_warn(psmouse
, "trackstick E7 report failed\n");
1226 psmouse_dbg(psmouse
,
1227 "trackstick E7 report: %2.2x %2.2x %2.2x\n",
1228 param
[0], param
[1], param
[2]);
1231 * Not sure what this does, but it is absolutely
1232 * essential. Without it, the touchpad does not
1233 * work at all and the trackstick just emits normal
1236 if (ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
) ||
1237 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
) ||
1238 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
) ||
1239 alps_command_mode_send_nibble(psmouse
, 0x9) ||
1240 alps_command_mode_send_nibble(psmouse
, 0x4)) {
1241 psmouse_err(psmouse
,
1242 "Error sending magic E6 sequence\n");
1243 goto error_passthrough
;
1247 if (alps_enter_command_mode(psmouse
, NULL
))
1248 goto error_passthrough
;
1249 if (alps_passthrough_mode_v3(psmouse
, false))
1253 if (alps_absolute_mode_v3(psmouse
)) {
1254 psmouse_err(psmouse
, "Failed to enter absolute mode\n");
1258 reg_val
= alps_command_mode_read_reg(psmouse
, 0x0006);
1261 if (__alps_command_mode_write_reg(psmouse
, reg_val
| 0x01))
1264 reg_val
= alps_command_mode_read_reg(psmouse
, 0x0007);
1267 if (__alps_command_mode_write_reg(psmouse
, reg_val
| 0x01))
1270 if (alps_command_mode_read_reg(psmouse
, 0x0144) == -1)
1272 if (__alps_command_mode_write_reg(psmouse
, 0x04))
1275 if (alps_command_mode_read_reg(psmouse
, 0x0159) == -1)
1277 if (__alps_command_mode_write_reg(psmouse
, 0x03))
1280 if (alps_command_mode_read_reg(psmouse
, 0x0163) == -1)
1282 if (alps_command_mode_write_reg(psmouse
, 0x0163, 0x03))
1285 if (alps_command_mode_read_reg(psmouse
, 0x0162) == -1)
1287 if (alps_command_mode_write_reg(psmouse
, 0x0162, 0x04))
1291 * This ensures the trackstick packets are in the format
1292 * supported by this driver. If bit 1 isn't set the packet
1293 * format is different.
1295 if (alps_command_mode_write_reg(psmouse
, 0x0008, 0x82))
1298 alps_exit_command_mode(psmouse
);
1300 /* Set rate and enable data reporting */
1302 if (ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
) ||
1303 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_ENABLE
)) {
1304 psmouse_err(psmouse
, "Failed to enable data reporting\n");
1311 /* Something failed while in passthrough mode, so try to get out */
1312 if (!alps_enter_command_mode(psmouse
, NULL
))
1313 alps_passthrough_mode_v3(psmouse
, false);
1316 * Leaving the touchpad in command mode will essentially render
1317 * it unusable until the machine reboots, so exit it here just
1320 alps_exit_command_mode(psmouse
);
1324 /* Must be in command mode when calling this function */
1325 static int alps_absolute_mode_v4(struct psmouse
*psmouse
)
1329 reg_val
= alps_command_mode_read_reg(psmouse
, 0x0004);
1334 if (__alps_command_mode_write_reg(psmouse
, reg_val
))
1340 static int alps_hw_init_v4(struct psmouse
*psmouse
)
1342 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
1343 unsigned char param
[4];
1345 if (alps_enter_command_mode(psmouse
, NULL
))
1348 if (alps_absolute_mode_v4(psmouse
)) {
1349 psmouse_err(psmouse
, "Failed to enter absolute mode\n");
1353 if (alps_command_mode_write_reg(psmouse
, 0x0007, 0x8c))
1356 if (alps_command_mode_write_reg(psmouse
, 0x0149, 0x03))
1359 if (alps_command_mode_write_reg(psmouse
, 0x0160, 0x03))
1362 if (alps_command_mode_write_reg(psmouse
, 0x017f, 0x15))
1365 if (alps_command_mode_write_reg(psmouse
, 0x0151, 0x01))
1368 if (alps_command_mode_write_reg(psmouse
, 0x0168, 0x03))
1371 if (alps_command_mode_write_reg(psmouse
, 0x014a, 0x03))
1374 if (alps_command_mode_write_reg(psmouse
, 0x0161, 0x03))
1377 alps_exit_command_mode(psmouse
);
1380 * This sequence changes the output from a 9-byte to an
1381 * 8-byte format. All the same data seems to be present,
1382 * just in a more compact format.
1387 if (ps2_command(ps2dev
, ¶m
[0], PSMOUSE_CMD_SETRATE
) ||
1388 ps2_command(ps2dev
, ¶m
[1], PSMOUSE_CMD_SETRATE
) ||
1389 ps2_command(ps2dev
, ¶m
[2], PSMOUSE_CMD_SETRATE
) ||
1390 ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETID
))
1393 /* Set rate and enable data reporting */
1395 if (ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
) ||
1396 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_ENABLE
)) {
1397 psmouse_err(psmouse
, "Failed to enable data reporting\n");
1405 * Leaving the touchpad in command mode will essentially render
1406 * it unusable until the machine reboots, so exit it here just
1409 alps_exit_command_mode(psmouse
);
1413 static void alps_set_defaults(struct alps_data
*priv
)
1415 switch (priv
->proto_version
) {
1418 priv
->hw_init
= alps_hw_init_v1_v2
;
1419 priv
->process_packet
= alps_process_packet_v1_v2
;
1420 priv
->set_abs_params
= alps_set_abs_params_st
;
1423 priv
->hw_init
= alps_hw_init_v3
;
1424 priv
->process_packet
= alps_process_packet_v3
;
1425 priv
->set_abs_params
= alps_set_abs_params_mt
;
1426 priv
->nibble_commands
= alps_v3_nibble_commands
;
1427 priv
->addr_command
= PSMOUSE_CMD_RESET_WRAP
;
1430 priv
->hw_init
= alps_hw_init_v4
;
1431 priv
->process_packet
= alps_process_packet_v4
;
1432 priv
->set_abs_params
= alps_set_abs_params_mt
;
1433 priv
->nibble_commands
= alps_v4_nibble_commands
;
1434 priv
->addr_command
= PSMOUSE_CMD_DISABLE
;
1439 static int alps_match_table(struct psmouse
*psmouse
, struct alps_data
*priv
,
1440 unsigned char *e7
, unsigned char *ec
)
1442 const struct alps_model_info
*model
;
1445 for (i
= 0; i
< ARRAY_SIZE(alps_model_data
); i
++) {
1446 model
= &alps_model_data
[i
];
1448 if (!memcmp(e7
, model
->signature
, sizeof(model
->signature
)) &&
1449 (!model
->command_mode_resp
||
1450 model
->command_mode_resp
== ec
[2])) {
1452 priv
->proto_version
= model
->proto_version
;
1453 alps_set_defaults(priv
);
1455 priv
->flags
= model
->flags
;
1456 priv
->byte0
= model
->byte0
;
1457 priv
->mask0
= model
->mask0
;
1466 static int alps_identify(struct psmouse
*psmouse
, struct alps_data
*priv
)
1468 unsigned char e6
[4], e7
[4], ec
[4];
1471 * First try "E6 report".
1472 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed.
1473 * The bits 0-2 of the first byte will be 1s if some buttons are
1476 if (alps_rpt_cmd(psmouse
, PSMOUSE_CMD_SETRES
,
1477 PSMOUSE_CMD_SETSCALE11
, e6
))
1480 if ((e6
[0] & 0xf8) != 0 || e6
[1] != 0 || (e6
[2] != 10 && e6
[2] != 100))
1484 * Now get the "E7" and "EC" reports. These will uniquely identify
1485 * most ALPS touchpads.
1487 if (alps_rpt_cmd(psmouse
, PSMOUSE_CMD_SETRES
,
1488 PSMOUSE_CMD_SETSCALE21
, e7
) ||
1489 alps_rpt_cmd(psmouse
, PSMOUSE_CMD_SETRES
,
1490 PSMOUSE_CMD_RESET_WRAP
, ec
) ||
1491 alps_exit_command_mode(psmouse
))
1494 if (alps_match_table(psmouse
, priv
, e7
, ec
) == 0)
1497 psmouse_info(psmouse
,
1498 "Unknown ALPS touchpad: E7=%2.2x %2.2x %2.2x, EC=%2.2x %2.2x %2.2x\n",
1499 e7
[0], e7
[1], e7
[2], ec
[0], ec
[1], ec
[2]);
1504 static int alps_reconnect(struct psmouse
*psmouse
)
1506 struct alps_data
*priv
= psmouse
->private;
1508 psmouse_reset(psmouse
);
1510 if (alps_identify(psmouse
, priv
) < 0)
1513 return priv
->hw_init(psmouse
);
1516 static void alps_disconnect(struct psmouse
*psmouse
)
1518 struct alps_data
*priv
= psmouse
->private;
1520 psmouse_reset(psmouse
);
1521 del_timer_sync(&priv
->timer
);
1522 input_unregister_device(priv
->dev2
);
1526 static void alps_set_abs_params_st(struct alps_data
*priv
,
1527 struct input_dev
*dev1
)
1529 input_set_abs_params(dev1
, ABS_X
, 0, 1023, 0, 0);
1530 input_set_abs_params(dev1
, ABS_Y
, 0, 767, 0, 0);
1533 static void alps_set_abs_params_mt(struct alps_data
*priv
,
1534 struct input_dev
*dev1
)
1536 set_bit(INPUT_PROP_SEMI_MT
, dev1
->propbit
);
1537 input_mt_init_slots(dev1
, 2, 0);
1538 input_set_abs_params(dev1
, ABS_MT_POSITION_X
, 0, ALPS_V3_X_MAX
, 0, 0);
1539 input_set_abs_params(dev1
, ABS_MT_POSITION_Y
, 0, ALPS_V3_Y_MAX
, 0, 0);
1541 set_bit(BTN_TOOL_DOUBLETAP
, dev1
->keybit
);
1542 set_bit(BTN_TOOL_TRIPLETAP
, dev1
->keybit
);
1543 set_bit(BTN_TOOL_QUADTAP
, dev1
->keybit
);
1545 input_set_abs_params(dev1
, ABS_X
, 0, ALPS_V3_X_MAX
, 0, 0);
1546 input_set_abs_params(dev1
, ABS_Y
, 0, ALPS_V3_Y_MAX
, 0, 0);
1549 int alps_init(struct psmouse
*psmouse
)
1551 struct alps_data
*priv
;
1552 struct input_dev
*dev1
= psmouse
->dev
, *dev2
;
1554 priv
= kzalloc(sizeof(struct alps_data
), GFP_KERNEL
);
1555 dev2
= input_allocate_device();
1560 setup_timer(&priv
->timer
, alps_flush_packet
, (unsigned long)psmouse
);
1562 psmouse
->private = priv
;
1564 psmouse_reset(psmouse
);
1566 if (alps_identify(psmouse
, priv
) < 0)
1569 if (priv
->hw_init(psmouse
))
1573 * Undo part of setup done for us by psmouse core since touchpad
1574 * is not a relative device.
1576 __clear_bit(EV_REL
, dev1
->evbit
);
1577 __clear_bit(REL_X
, dev1
->relbit
);
1578 __clear_bit(REL_Y
, dev1
->relbit
);
1581 * Now set up our capabilities.
1583 dev1
->evbit
[BIT_WORD(EV_KEY
)] |= BIT_MASK(EV_KEY
);
1584 dev1
->keybit
[BIT_WORD(BTN_TOUCH
)] |= BIT_MASK(BTN_TOUCH
);
1585 dev1
->keybit
[BIT_WORD(BTN_TOOL_FINGER
)] |= BIT_MASK(BTN_TOOL_FINGER
);
1586 dev1
->keybit
[BIT_WORD(BTN_LEFT
)] |=
1587 BIT_MASK(BTN_LEFT
) | BIT_MASK(BTN_RIGHT
);
1589 dev1
->evbit
[BIT_WORD(EV_ABS
)] |= BIT_MASK(EV_ABS
);
1591 priv
->set_abs_params(priv
, dev1
);
1592 input_set_abs_params(dev1
, ABS_PRESSURE
, 0, 127, 0, 0);
1594 if (priv
->flags
& ALPS_WHEEL
) {
1595 dev1
->evbit
[BIT_WORD(EV_REL
)] |= BIT_MASK(EV_REL
);
1596 dev1
->relbit
[BIT_WORD(REL_WHEEL
)] |= BIT_MASK(REL_WHEEL
);
1599 if (priv
->flags
& (ALPS_FW_BK_1
| ALPS_FW_BK_2
)) {
1600 dev1
->keybit
[BIT_WORD(BTN_FORWARD
)] |= BIT_MASK(BTN_FORWARD
);
1601 dev1
->keybit
[BIT_WORD(BTN_BACK
)] |= BIT_MASK(BTN_BACK
);
1604 if (priv
->flags
& ALPS_FOUR_BUTTONS
) {
1605 dev1
->keybit
[BIT_WORD(BTN_0
)] |= BIT_MASK(BTN_0
);
1606 dev1
->keybit
[BIT_WORD(BTN_1
)] |= BIT_MASK(BTN_1
);
1607 dev1
->keybit
[BIT_WORD(BTN_2
)] |= BIT_MASK(BTN_2
);
1608 dev1
->keybit
[BIT_WORD(BTN_3
)] |= BIT_MASK(BTN_3
);
1610 dev1
->keybit
[BIT_WORD(BTN_MIDDLE
)] |= BIT_MASK(BTN_MIDDLE
);
1613 snprintf(priv
->phys
, sizeof(priv
->phys
), "%s/input1", psmouse
->ps2dev
.serio
->phys
);
1614 dev2
->phys
= priv
->phys
;
1615 dev2
->name
= (priv
->flags
& ALPS_DUALPOINT
) ?
1616 "DualPoint Stick" : "PS/2 Mouse";
1617 dev2
->id
.bustype
= BUS_I8042
;
1618 dev2
->id
.vendor
= 0x0002;
1619 dev2
->id
.product
= PSMOUSE_ALPS
;
1620 dev2
->id
.version
= 0x0000;
1621 dev2
->dev
.parent
= &psmouse
->ps2dev
.serio
->dev
;
1623 dev2
->evbit
[0] = BIT_MASK(EV_KEY
) | BIT_MASK(EV_REL
);
1624 dev2
->relbit
[BIT_WORD(REL_X
)] = BIT_MASK(REL_X
) | BIT_MASK(REL_Y
);
1625 dev2
->keybit
[BIT_WORD(BTN_LEFT
)] =
1626 BIT_MASK(BTN_LEFT
) | BIT_MASK(BTN_MIDDLE
) | BIT_MASK(BTN_RIGHT
);
1628 if (input_register_device(priv
->dev2
))
1631 psmouse
->protocol_handler
= alps_process_byte
;
1632 psmouse
->poll
= alps_poll
;
1633 psmouse
->disconnect
= alps_disconnect
;
1634 psmouse
->reconnect
= alps_reconnect
;
1635 psmouse
->pktsize
= priv
->proto_version
== ALPS_PROTO_V4
? 8 : 6;
1637 /* We are having trouble resyncing ALPS touchpads so disable it for now */
1638 psmouse
->resync_time
= 0;
1643 psmouse_reset(psmouse
);
1644 input_free_device(dev2
);
1646 psmouse
->private = NULL
;
1650 int alps_detect(struct psmouse
*psmouse
, bool set_properties
)
1652 struct alps_data dummy
;
1654 if (alps_identify(psmouse
, &dummy
) < 0)
1657 if (set_properties
) {
1658 psmouse
->vendor
= "ALPS";
1659 psmouse
->name
= dummy
.flags
& ALPS_DUALPOINT
?
1660 "DualPoint TouchPad" : "GlidePoint";
1661 psmouse
->model
= dummy
.proto_version
<< 8;