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_CMD_NIBBLE_10 0x01f2
32 #define ALPS_REG_BASE_RUSHMORE 0xc2c0
33 #define ALPS_REG_BASE_PINNACLE 0x0000
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 */
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 */
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 */
93 #define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */
94 #define ALPS_PASS 0x04 /* device has a pass-through port */
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 */
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 },
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
);
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.
145 /* Packet formats are described in Documentation/input/alps.txt */
147 static bool alps_is_valid_first_byte(struct alps_data
*priv
,
150 return (data
& priv
->mask0
) == priv
->byte0
;
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
)
157 struct input_dev
*dev
;
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.
164 dev
= test_bit(BTN_LEFT
, dev2
->key
) ? dev2
: dev1
;
165 input_report_key(dev
, BTN_LEFT
, left
);
167 dev
= test_bit(BTN_RIGHT
, dev2
->key
) ? dev2
: dev1
;
168 input_report_key(dev
, BTN_RIGHT
, right
);
170 dev
= test_bit(BTN_MIDDLE
, dev2
->key
) ? dev2
: dev1
;
171 input_report_key(dev
, BTN_MIDDLE
, middle
);
174 * Sync the _other_ device now, we'll do the first
175 * device later once we report the rest of the events.
180 static void alps_process_packet_v1_v2(struct psmouse
*psmouse
)
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;
189 if (priv
->proto_version
== ALPS_PROTO_V1
) {
190 left
= packet
[2] & 0x10;
191 right
= packet
[2] & 0x08;
193 x
= packet
[1] | ((packet
[0] & 0x07) << 7);
194 y
= packet
[4] | ((packet
[3] & 0x07) << 7);
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));
205 if (priv
->flags
& ALPS_FW_BK_1
) {
206 back
= packet
[0] & 0x10;
207 forward
= packet
[2] & 4;
210 if (priv
->flags
& ALPS_FW_BK_2
) {
211 back
= packet
[3] & 4;
212 forward
= packet
[2] & 4;
213 if ((middle
= forward
&& back
))
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
));
224 alps_report_buttons(psmouse
, dev2
, dev
, left
, right
, middle
);
230 alps_report_buttons(psmouse
, dev
, dev2
, left
, right
, middle
);
232 /* Convert hardware tap to a reasonable Z value */
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.
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);
248 priv
->prev_fin
= fin
;
251 input_report_key(dev
, BTN_TOUCH
, 1);
253 input_report_key(dev
, BTN_TOUCH
, 0);
256 input_report_abs(dev
, ABS_X
, x
);
257 input_report_abs(dev
, ABS_Y
, y
);
260 input_report_abs(dev
, ABS_PRESSURE
, z
);
261 input_report_key(dev
, BTN_TOOL_FINGER
, z
> 0);
263 if (priv
->flags
& ALPS_WHEEL
)
264 input_report_rel(dev
, REL_WHEEL
, ((packet
[2] << 1) & 0x08) - ((packet
[0] >> 4) & 0x07));
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
);
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);
282 * Process bitmap data for V5 protocols. Return value is null.
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.
288 static void alps_process_bitmap_dolphin(struct alps_data
*priv
,
289 struct alps_fields
*fields
)
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
;
296 x_map
= fields
->x_map
;
297 y_map
= fields
->y_map
;
299 if (!x_map
|| !y_map
)
302 /* Get Most-significant and Least-significant bit */
308 /* Most-significant bit should never exceed max sensor line number */
309 if (x_msb
> priv
->x_bits
|| y_msb
> priv
->y_bits
)
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));
318 start_bit
= y_lsb
- 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
;
328 static void alps_get_bitmap_points(unsigned int map
,
329 struct alps_bitmap_point
*low
,
330 struct alps_bitmap_point
*high
,
333 struct alps_bitmap_point
*point
;
334 int i
, bit
, prev_bit
= 0;
337 for (i
= 0; map
!= 0; i
++, map
>>= 1) {
341 point
->start_bit
= i
;
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
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
364 static int alps_process_bitmap(struct alps_data
*priv
,
365 struct alps_fields
*fields
)
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,};
371 if (!fields
->x_map
|| !fields
->y_map
)
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
);
378 * Fingers can overlap, so we use the maximum count of fingers
379 * on either axis as the finger count.
381 fingers
= max(fingers_x
, fingers_y
);
384 * If an axis reports only a single contact, we have overlapping or
385 * adjacent fingers. Divide the single contact between the two points.
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);
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);
401 (priv
->x_max
* (2 * x_low
.start_bit
+ x_low
.num_bits
- 1)) /
402 (2 * (priv
->x_bits
- 1));
404 (priv
->y_max
* (2 * y_low
.start_bit
+ y_low
.num_bits
- 1)) /
405 (2 * (priv
->y_bits
- 1));
408 (priv
->x_max
* (2 * x_high
.start_bit
+ x_high
.num_bits
- 1)) /
409 (2 * (priv
->x_bits
- 1));
411 (priv
->y_max
* (2 * y_high
.start_bit
+ y_high
.num_bits
- 1)) /
412 (2 * (priv
->y_bits
- 1));
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
;
423 static void alps_set_slot(struct input_dev
*dev
, int slot
, int x
, int y
)
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
);
431 static void alps_report_mt_data(struct psmouse
*psmouse
, int n
)
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
];
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
);
442 input_mt_sync_frame(dev
);
445 static void alps_report_semi_mt_data(struct psmouse
*psmouse
, int fingers
)
447 struct alps_data
*priv
= psmouse
->private;
448 struct input_dev
*dev
= psmouse
->dev
;
449 struct alps_fields
*f
= &priv
->f
;
451 /* Use st data when we don't have mt data */
453 f
->mt
[0].x
= f
->st
.x
;
454 f
->mt
[0].y
= f
->st
.y
;
455 fingers
= f
->pressure
> 0 ? 1 : 0;
458 alps_report_mt_data(psmouse
, (fingers
<= 2) ? fingers
: 2);
460 input_mt_report_finger_count(dev
, fingers
);
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
);
466 input_report_abs(dev
, ABS_PRESSURE
, f
->pressure
);
471 static void alps_process_trackstick_packet_v3(struct psmouse
*psmouse
)
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
;
478 /* It should be a DualPoint when received trackstick packet */
479 if (!(priv
->flags
& ALPS_DUALPOINT
)) {
480 psmouse_warn(psmouse
,
481 "Rejected trackstick packet from non DualPoint device");
485 /* Sanity check packet */
486 if (!(packet
[0] & 0x40)) {
487 psmouse_dbg(psmouse
, "Bad trackstick packet, discarding\n");
492 * There's a special packet that seems to indicate the end
493 * of a stream of trackstick data. Filter these out.
495 if (packet
[1] == 0x7f && packet
[2] == 0x7f && packet
[4] == 0x7f)
498 x
= (s8
)(((packet
[0] & 0x20) << 2) | (packet
[1] & 0x7f));
499 y
= (s8
)(((packet
[0] & 0x10) << 3) | (packet
[2] & 0x7f));
500 z
= (packet
[4] & 0x7c) >> 2;
503 * The x and y values tend to be quite large, and when used
504 * alone the trackstick is difficult to use. Scale them down
510 input_report_rel(dev
, REL_X
, x
);
511 input_report_rel(dev
, REL_Y
, -y
);
514 * Most ALPS models report the trackstick buttons in the touchpad
515 * packets, but a few report them here. No reliable way has been
516 * found to differentiate between the models upfront, so we enable
517 * the quirk in response to seeing a button press in the trackstick
520 left
= packet
[3] & 0x01;
521 right
= packet
[3] & 0x02;
522 middle
= packet
[3] & 0x04;
524 if (!(priv
->quirks
& ALPS_QUIRK_TRACKSTICK_BUTTONS
) &&
525 (left
|| right
|| middle
))
526 priv
->quirks
|= ALPS_QUIRK_TRACKSTICK_BUTTONS
;
528 if (priv
->quirks
& ALPS_QUIRK_TRACKSTICK_BUTTONS
) {
529 input_report_key(dev
, BTN_LEFT
, left
);
530 input_report_key(dev
, BTN_RIGHT
, right
);
531 input_report_key(dev
, BTN_MIDDLE
, middle
);
538 static void alps_decode_buttons_v3(struct alps_fields
*f
, unsigned char *p
)
540 f
->left
= !!(p
[3] & 0x01);
541 f
->right
= !!(p
[3] & 0x02);
542 f
->middle
= !!(p
[3] & 0x04);
544 f
->ts_left
= !!(p
[3] & 0x10);
545 f
->ts_right
= !!(p
[3] & 0x20);
546 f
->ts_middle
= !!(p
[3] & 0x40);
549 static int alps_decode_pinnacle(struct alps_fields
*f
, unsigned char *p
,
550 struct psmouse
*psmouse
)
552 f
->first_mp
= !!(p
[4] & 0x40);
553 f
->is_mp
= !!(p
[0] & 0x40);
555 f
->fingers
= (p
[5] & 0x3) + 1;
556 f
->x_map
= ((p
[4] & 0x7e) << 8) |
557 ((p
[1] & 0x7f) << 2) |
558 ((p
[0] & 0x30) >> 4);
559 f
->y_map
= ((p
[3] & 0x70) << 4) |
560 ((p
[2] & 0x7f) << 1) |
563 f
->st
.x
= ((p
[1] & 0x7f) << 4) | ((p
[4] & 0x30) >> 2) |
564 ((p
[0] & 0x30) >> 4);
565 f
->st
.y
= ((p
[2] & 0x7f) << 4) | (p
[4] & 0x0f);
566 f
->pressure
= p
[5] & 0x7f;
568 alps_decode_buttons_v3(f
, p
);
573 static int alps_decode_rushmore(struct alps_fields
*f
, unsigned char *p
,
574 struct psmouse
*psmouse
)
576 alps_decode_pinnacle(f
, p
, psmouse
);
578 /* Rushmore's packet decode has a bit difference with Pinnacle's */
579 f
->is_mp
= !!(p
[5] & 0x40);
580 f
->fingers
= max((p
[5] & 0x3), ((p
[5] >> 2) & 0x3)) + 1;
581 f
->x_map
|= (p
[5] & 0x10) << 11;
582 f
->y_map
|= (p
[5] & 0x20) << 6;
587 static int alps_decode_dolphin(struct alps_fields
*f
, unsigned char *p
,
588 struct psmouse
*psmouse
)
591 struct alps_data
*priv
= psmouse
->private;
593 f
->first_mp
= !!(p
[0] & 0x02);
594 f
->is_mp
= !!(p
[0] & 0x20);
597 f
->st
.x
= ((p
[1] & 0x7f) | ((p
[4] & 0x0f) << 7));
598 f
->st
.y
= ((p
[2] & 0x7f) | ((p
[4] & 0xf0) << 3));
599 f
->pressure
= (p
[0] & 4) ? 0 : p
[5] & 0x7f;
600 alps_decode_buttons_v3(f
, p
);
602 f
->fingers
= ((p
[0] & 0x6) >> 1 |
605 palm_data
= (p
[1] & 0x7f) |
606 ((p
[2] & 0x7f) << 7) |
607 ((p
[4] & 0x7f) << 14) |
608 ((p
[5] & 0x7f) << 21) |
609 ((p
[3] & 0x07) << 28) |
610 (((u64
)p
[3] & 0x70) << 27) |
611 (((u64
)p
[0] & 0x01) << 34);
613 /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */
614 f
->y_map
= palm_data
& (BIT(priv
->y_bits
) - 1);
616 /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */
617 f
->x_map
= (palm_data
>> priv
->y_bits
) &
618 (BIT(priv
->x_bits
) - 1);
624 static void alps_process_touchpad_packet_v3_v5(struct psmouse
*psmouse
)
626 struct alps_data
*priv
= psmouse
->private;
627 unsigned char *packet
= psmouse
->packet
;
628 struct input_dev
*dev2
= priv
->dev2
;
629 struct alps_fields
*f
= &priv
->f
;
632 memset(f
, 0, sizeof(*f
));
634 priv
->decode_fields(f
, packet
, psmouse
);
637 * There's no single feature of touchpad position and bitmap packets
638 * that can be used to distinguish between them. We rely on the fact
639 * that a bitmap packet should always follow a position packet with
640 * bit 6 of packet[4] set.
642 if (priv
->multi_packet
) {
644 * Sometimes a position packet will indicate a multi-packet
645 * sequence, but then what follows is another position
646 * packet. Check for this, and when it happens process the
647 * position packet as usual.
650 fingers
= f
->fingers
;
651 if (priv
->proto_version
== ALPS_PROTO_V3
) {
652 if (alps_process_bitmap(priv
, f
) == 0)
653 fingers
= 0; /* Use st data */
655 /* Now process position packet */
656 priv
->decode_fields(f
, priv
->multi_data
,
660 * Because Dolphin uses position packet's
661 * coordinate data as Pt1 and uses it to
662 * calculate Pt2, so we need to do position
663 * packet decode first.
665 priv
->decode_fields(f
, priv
->multi_data
,
669 * Since Dolphin's finger number is reliable,
670 * there is no need to compare with bmap_fn.
672 alps_process_bitmap_dolphin(priv
, f
);
675 priv
->multi_packet
= 0;
680 * Bit 6 of byte 0 is not usually set in position packets. The only
681 * times it seems to be set is in situations where the data is
682 * suspect anyway, e.g. a palm resting flat on the touchpad. Given
683 * this combined with the fact that this bit is useful for filtering
684 * out misidentified bitmap packets, we reject anything with this
690 if (!priv
->multi_packet
&& f
->first_mp
) {
691 priv
->multi_packet
= 1;
692 memcpy(priv
->multi_data
, packet
, sizeof(priv
->multi_data
));
696 priv
->multi_packet
= 0;
699 * Sometimes the hardware sends a single packet with z = 0
700 * in the middle of a stream. Real releases generate packets
701 * with x, y, and z all zero, so these seem to be flukes.
704 if (f
->st
.x
&& f
->st
.y
&& !f
->pressure
)
707 alps_report_semi_mt_data(psmouse
, fingers
);
709 if ((priv
->flags
& ALPS_DUALPOINT
) &&
710 !(priv
->quirks
& ALPS_QUIRK_TRACKSTICK_BUTTONS
)) {
711 input_report_key(dev2
, BTN_LEFT
, f
->ts_left
);
712 input_report_key(dev2
, BTN_RIGHT
, f
->ts_right
);
713 input_report_key(dev2
, BTN_MIDDLE
, f
->ts_middle
);
718 static void alps_process_packet_v3(struct psmouse
*psmouse
)
720 unsigned char *packet
= psmouse
->packet
;
723 * v3 protocol packets come in three types, two representing
724 * touchpad data and one representing trackstick data.
725 * Trackstick packets seem to be distinguished by always
726 * having 0x3f in the last byte. This value has never been
727 * observed in the last byte of either of the other types
730 if (packet
[5] == 0x3f) {
731 alps_process_trackstick_packet_v3(psmouse
);
735 alps_process_touchpad_packet_v3_v5(psmouse
);
738 static void alps_process_packet_v6(struct psmouse
*psmouse
)
740 struct alps_data
*priv
= psmouse
->private;
741 unsigned char *packet
= psmouse
->packet
;
742 struct input_dev
*dev
= psmouse
->dev
;
743 struct input_dev
*dev2
= priv
->dev2
;
744 int x
, y
, z
, left
, right
, middle
;
747 * We can use Byte5 to distinguish if the packet is from Touchpad
752 if (packet
[5] == 0x7F) {
753 /* It should be a DualPoint when received Trackpoint packet */
754 if (!(priv
->flags
& ALPS_DUALPOINT
)) {
755 psmouse_warn(psmouse
,
756 "Rejected trackstick packet from non DualPoint device");
760 /* Trackpoint packet */
761 x
= packet
[1] | ((packet
[3] & 0x20) << 2);
762 y
= packet
[2] | ((packet
[3] & 0x40) << 1);
764 left
= packet
[3] & 0x01;
765 right
= packet
[3] & 0x02;
766 middle
= packet
[3] & 0x04;
768 /* To prevent the cursor jump when finger lifted */
769 if (x
== 0x7F && y
== 0x7F && z
== 0x7F)
772 /* Divide 4 since trackpoint's speed is too fast */
773 input_report_rel(dev2
, REL_X
, (char)x
/ 4);
774 input_report_rel(dev2
, REL_Y
, -((char)y
/ 4));
776 input_report_key(dev2
, BTN_LEFT
, left
);
777 input_report_key(dev2
, BTN_RIGHT
, right
);
778 input_report_key(dev2
, BTN_MIDDLE
, middle
);
784 /* Touchpad packet */
785 x
= packet
[1] | ((packet
[3] & 0x78) << 4);
786 y
= packet
[2] | ((packet
[4] & 0x78) << 4);
788 left
= packet
[3] & 0x01;
789 right
= packet
[3] & 0x02;
792 input_report_key(dev
, BTN_TOUCH
, 1);
794 input_report_key(dev
, BTN_TOUCH
, 0);
797 input_report_abs(dev
, ABS_X
, x
);
798 input_report_abs(dev
, ABS_Y
, y
);
801 input_report_abs(dev
, ABS_PRESSURE
, z
);
802 input_report_key(dev
, BTN_TOOL_FINGER
, z
> 0);
804 /* v6 touchpad does not have middle button */
805 input_report_key(dev
, BTN_LEFT
, left
);
806 input_report_key(dev
, BTN_RIGHT
, right
);
811 static void alps_process_packet_v4(struct psmouse
*psmouse
)
813 struct alps_data
*priv
= psmouse
->private;
814 unsigned char *packet
= psmouse
->packet
;
815 struct alps_fields
*f
= &priv
->f
;
819 * v4 has a 6-byte encoding for bitmap data, but this data is
820 * broken up between 3 normal packets. Use priv->multi_packet to
821 * track our position in the bitmap packet.
823 if (packet
[6] & 0x40) {
824 /* sync, reset position */
825 priv
->multi_packet
= 0;
828 if (WARN_ON_ONCE(priv
->multi_packet
> 2))
831 offset
= 2 * priv
->multi_packet
;
832 priv
->multi_data
[offset
] = packet
[6];
833 priv
->multi_data
[offset
+ 1] = packet
[7];
835 if (++priv
->multi_packet
> 2) {
836 priv
->multi_packet
= 0;
838 f
->x_map
= ((priv
->multi_data
[2] & 0x1f) << 10) |
839 ((priv
->multi_data
[3] & 0x60) << 3) |
840 ((priv
->multi_data
[0] & 0x3f) << 2) |
841 ((priv
->multi_data
[1] & 0x60) >> 5);
842 f
->y_map
= ((priv
->multi_data
[5] & 0x01) << 10) |
843 ((priv
->multi_data
[3] & 0x1f) << 5) |
844 (priv
->multi_data
[1] & 0x1f);
846 f
->fingers
= alps_process_bitmap(priv
, f
);
849 f
->left
= !!(packet
[4] & 0x01);
850 f
->right
= !!(packet
[4] & 0x02);
852 f
->st
.x
= ((packet
[1] & 0x7f) << 4) | ((packet
[3] & 0x30) >> 2) |
853 ((packet
[0] & 0x30) >> 4);
854 f
->st
.y
= ((packet
[2] & 0x7f) << 4) | (packet
[3] & 0x0f);
855 f
->pressure
= packet
[5] & 0x7f;
857 alps_report_semi_mt_data(psmouse
, f
->fingers
);
860 static bool alps_is_valid_package_v7(struct psmouse
*psmouse
)
862 switch (psmouse
->pktcnt
) {
864 return (psmouse
->packet
[2] & 0x40) == 0x40;
866 return (psmouse
->packet
[3] & 0x48) == 0x48;
868 return (psmouse
->packet
[5] & 0x40) == 0x00;
873 static unsigned char alps_get_packet_id_v7(char *byte
)
875 unsigned char packet_id
;
878 packet_id
= V7_PACKET_ID_TWO
;
879 else if (byte
[4] & 0x01)
880 packet_id
= V7_PACKET_ID_MULTI
;
881 else if ((byte
[0] & 0x10) && !(byte
[4] & 0x43))
882 packet_id
= V7_PACKET_ID_NEW
;
883 else if (byte
[1] == 0x00 && byte
[4] == 0x00)
884 packet_id
= V7_PACKET_ID_IDLE
;
886 packet_id
= V7_PACKET_ID_UNKNOWN
;
891 static void alps_get_finger_coordinate_v7(struct input_mt_pos
*mt
,
893 unsigned char pkt_id
)
896 * packet-fmt b7 b6 b5 b4 b3 b2 b1 b0
897 * Byte0 TWO & MULTI L 1 R M 1 Y0-2 Y0-1 Y0-0
898 * Byte0 NEW L 1 X1-5 1 1 Y0-2 Y0-1 Y0-0
899 * Byte1 Y0-10 Y0-9 Y0-8 Y0-7 Y0-6 Y0-5 Y0-4 Y0-3
900 * Byte2 X0-11 1 X0-10 X0-9 X0-8 X0-7 X0-6 X0-5
901 * Byte3 X1-11 1 X0-4 X0-3 1 X0-2 X0-1 X0-0
902 * Byte4 TWO X1-10 TWO X1-9 X1-8 X1-7 X1-6 X1-5 X1-4
903 * Byte4 MULTI X1-10 TWO X1-9 X1-8 X1-7 X1-6 Y1-5 1
904 * Byte4 NEW X1-10 TWO X1-9 X1-8 X1-7 X1-6 0 0
905 * Byte5 TWO & NEW Y1-10 0 Y1-9 Y1-8 Y1-7 Y1-6 Y1-5 Y1-4
906 * Byte5 MULTI Y1-10 0 Y1-9 Y1-8 Y1-7 Y1-6 F-1 F-0
908 * R / M: Non-clickpads: Right / Middle button
909 * Clickpads: When > 2 fingers are down, and some fingers
910 * are in the button area, then the 2 coordinates reported
911 * are for fingers outside the button area and these report
912 * extra fingers being present in the right / left button
913 * area. Note these fingers are not added to the F field!
914 * so if a TWO packet is received and R = 1 then there are
915 * 3 fingers down, etc.
916 * TWO: 1: Two touches present, byte 0/4/5 are in TWO fmt
917 * 0: If byte 4 bit 0 is 1, then byte 0/4/5 are in MULTI fmt
918 * otherwise byte 0 bit 4 must be set and byte 0/4/5 are
920 * F: Number of fingers - 3, 0 means 3 fingers, 1 means 4 ...
923 mt
[0].x
= ((pkt
[2] & 0x80) << 4);
924 mt
[0].x
|= ((pkt
[2] & 0x3F) << 5);
925 mt
[0].x
|= ((pkt
[3] & 0x30) >> 1);
926 mt
[0].x
|= (pkt
[3] & 0x07);
927 mt
[0].y
= (pkt
[1] << 3) | (pkt
[0] & 0x07);
929 mt
[1].x
= ((pkt
[3] & 0x80) << 4);
930 mt
[1].x
|= ((pkt
[4] & 0x80) << 3);
931 mt
[1].x
|= ((pkt
[4] & 0x3F) << 4);
932 mt
[1].y
= ((pkt
[5] & 0x80) << 3);
933 mt
[1].y
|= ((pkt
[5] & 0x3F) << 4);
936 case V7_PACKET_ID_TWO
:
941 case V7_PACKET_ID_MULTI
:
944 mt
[1].y
|= ((pkt
[4] & 0x02) << 4);
948 case V7_PACKET_ID_NEW
:
950 mt
[1].x
|= (pkt
[0] & 0x20);
955 mt
[0].y
= 0x7FF - mt
[0].y
;
956 mt
[1].y
= 0x7FF - mt
[1].y
;
959 static int alps_get_mt_count(struct input_mt_pos
*mt
)
963 for (i
= 0; i
< MAX_TOUCHES
; i
++) {
964 if (mt
[i
].x
!= 0 || mt
[i
].y
!= 0)
971 static int alps_decode_packet_v7(struct alps_fields
*f
,
973 struct psmouse
*psmouse
)
975 struct alps_data
*priv
= psmouse
->private;
976 unsigned char pkt_id
;
978 pkt_id
= alps_get_packet_id_v7(p
);
979 if (pkt_id
== V7_PACKET_ID_IDLE
)
981 if (pkt_id
== V7_PACKET_ID_UNKNOWN
)
984 * NEW packets are send to indicate a discontinuity in the finger
985 * coordinate reporting. Specifically a finger may have moved from
986 * slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for
989 * NEW packets have 3 problems:
990 * 1) They do not contain middle / right button info (on non clickpads)
991 * this can be worked around by preserving the old button state
992 * 2) They do not contain an accurate fingercount, and they are
993 * typically send when the number of fingers changes. We cannot use
994 * the old finger count as that may mismatch with the amount of
995 * touch coordinates we've available in the NEW packet
996 * 3) Their x data for the second touch is inaccurate leading to
997 * a possible jump of the x coordinate by 16 units when the first
998 * non NEW packet comes in
999 * Since problems 2 & 3 cannot be worked around, just ignore them.
1001 if (pkt_id
== V7_PACKET_ID_NEW
)
1004 alps_get_finger_coordinate_v7(f
->mt
, p
, pkt_id
);
1006 if (pkt_id
== V7_PACKET_ID_TWO
)
1007 f
->fingers
= alps_get_mt_count(f
->mt
);
1008 else /* pkt_id == V7_PACKET_ID_MULTI */
1009 f
->fingers
= 3 + (p
[5] & 0x03);
1011 f
->left
= (p
[0] & 0x80) >> 7;
1012 if (priv
->flags
& ALPS_BUTTONPAD
) {
1018 f
->right
= (p
[0] & 0x20) >> 5;
1019 f
->middle
= (p
[0] & 0x10) >> 4;
1022 /* Sometimes a single touch is reported in mt[1] rather then mt[0] */
1023 if (f
->fingers
== 1 && f
->mt
[0].x
== 0 && f
->mt
[0].y
== 0) {
1024 f
->mt
[0].x
= f
->mt
[1].x
;
1025 f
->mt
[0].y
= f
->mt
[1].y
;
1033 static void alps_process_trackstick_packet_v7(struct psmouse
*psmouse
)
1035 struct alps_data
*priv
= psmouse
->private;
1036 unsigned char *packet
= psmouse
->packet
;
1037 struct input_dev
*dev2
= priv
->dev2
;
1038 int x
, y
, z
, left
, right
, middle
;
1040 /* It should be a DualPoint when received trackstick packet */
1041 if (!(priv
->flags
& ALPS_DUALPOINT
)) {
1042 psmouse_warn(psmouse
,
1043 "Rejected trackstick packet from non DualPoint device");
1048 * b7 b6 b5 b4 b3 b2 b1 b0
1049 * Byte0 0 1 0 0 1 0 0 0
1050 * Byte1 1 1 * * 1 M R L
1051 * Byte2 X7 1 X5 X4 X3 X2 X1 X0
1052 * Byte3 Z6 1 Y6 X6 1 Y2 Y1 Y0
1053 * Byte4 Y7 0 Y5 Y4 Y3 1 1 0
1054 * Byte5 T&P 0 Z5 Z4 Z3 Z2 Z1 Z0
1055 * M / R / L: Middle / Right / Left button
1058 x
= ((packet
[2] & 0xbf)) | ((packet
[3] & 0x10) << 2);
1059 y
= (packet
[3] & 0x07) | (packet
[4] & 0xb8) |
1060 ((packet
[3] & 0x20) << 1);
1061 z
= (packet
[5] & 0x3f) | ((packet
[3] & 0x80) >> 1);
1063 left
= (packet
[1] & 0x01);
1064 right
= (packet
[1] & 0x02) >> 1;
1065 middle
= (packet
[1] & 0x04) >> 2;
1067 /* Divide 2 since trackpoint's speed is too fast */
1068 input_report_rel(dev2
, REL_X
, (char)x
/ 2);
1069 input_report_rel(dev2
, REL_Y
, -((char)y
/ 2));
1071 input_report_key(dev2
, BTN_LEFT
, left
);
1072 input_report_key(dev2
, BTN_RIGHT
, right
);
1073 input_report_key(dev2
, BTN_MIDDLE
, middle
);
1078 static void alps_process_touchpad_packet_v7(struct psmouse
*psmouse
)
1080 struct alps_data
*priv
= psmouse
->private;
1081 struct input_dev
*dev
= psmouse
->dev
;
1082 struct alps_fields
*f
= &priv
->f
;
1084 memset(f
, 0, sizeof(*f
));
1086 if (priv
->decode_fields(f
, psmouse
->packet
, psmouse
))
1089 alps_report_mt_data(psmouse
, alps_get_mt_count(f
->mt
));
1091 input_mt_report_finger_count(dev
, f
->fingers
);
1093 input_report_key(dev
, BTN_LEFT
, f
->left
);
1094 input_report_key(dev
, BTN_RIGHT
, f
->right
);
1095 input_report_key(dev
, BTN_MIDDLE
, f
->middle
);
1100 static void alps_process_packet_v7(struct psmouse
*psmouse
)
1102 unsigned char *packet
= psmouse
->packet
;
1104 if (packet
[0] == 0x48 && (packet
[4] & 0x47) == 0x06)
1105 alps_process_trackstick_packet_v7(psmouse
);
1107 alps_process_touchpad_packet_v7(psmouse
);
1110 static void alps_report_bare_ps2_packet(struct psmouse
*psmouse
,
1111 unsigned char packet
[],
1112 bool report_buttons
)
1114 struct alps_data
*priv
= psmouse
->private;
1115 struct input_dev
*dev2
= priv
->dev2
;
1118 alps_report_buttons(psmouse
, dev2
, psmouse
->dev
,
1119 packet
[0] & 1, packet
[0] & 2, packet
[0] & 4);
1121 input_report_rel(dev2
, REL_X
,
1122 packet
[1] ? packet
[1] - ((packet
[0] << 4) & 0x100) : 0);
1123 input_report_rel(dev2
, REL_Y
,
1124 packet
[2] ? ((packet
[0] << 3) & 0x100) - packet
[2] : 0);
1129 static psmouse_ret_t
alps_handle_interleaved_ps2(struct psmouse
*psmouse
)
1131 struct alps_data
*priv
= psmouse
->private;
1133 if (psmouse
->pktcnt
< 6)
1134 return PSMOUSE_GOOD_DATA
;
1136 if (psmouse
->pktcnt
== 6) {
1138 * Start a timer to flush the packet if it ends up last
1139 * 6-byte packet in the stream. Timer needs to fire
1140 * psmouse core times out itself. 20 ms should be enough
1141 * to decide if we are getting more data or not.
1143 mod_timer(&priv
->timer
, jiffies
+ msecs_to_jiffies(20));
1144 return PSMOUSE_GOOD_DATA
;
1147 del_timer(&priv
->timer
);
1149 if (psmouse
->packet
[6] & 0x80) {
1152 * Highest bit is set - that means we either had
1153 * complete ALPS packet and this is start of the
1154 * next packet or we got garbage.
1157 if (((psmouse
->packet
[3] |
1158 psmouse
->packet
[4] |
1159 psmouse
->packet
[5]) & 0x80) ||
1160 (!alps_is_valid_first_byte(priv
, psmouse
->packet
[6]))) {
1161 psmouse_dbg(psmouse
,
1162 "refusing packet %4ph (suspected interleaved ps/2)\n",
1163 psmouse
->packet
+ 3);
1164 return PSMOUSE_BAD_DATA
;
1167 priv
->process_packet(psmouse
);
1169 /* Continue with the next packet */
1170 psmouse
->packet
[0] = psmouse
->packet
[6];
1171 psmouse
->pktcnt
= 1;
1176 * High bit is 0 - that means that we indeed got a PS/2
1177 * packet in the middle of ALPS packet.
1179 * There is also possibility that we got 6-byte ALPS
1180 * packet followed by 3-byte packet from trackpoint. We
1181 * can not distinguish between these 2 scenarios but
1182 * because the latter is unlikely to happen in course of
1183 * normal operation (user would need to press all
1184 * buttons on the pad and start moving trackpoint
1185 * without touching the pad surface) we assume former.
1186 * Even if we are wrong the wost thing that would happen
1187 * the cursor would jump but we should not get protocol
1188 * de-synchronization.
1191 alps_report_bare_ps2_packet(psmouse
, &psmouse
->packet
[3],
1195 * Continue with the standard ALPS protocol handling,
1196 * but make sure we won't process it as an interleaved
1197 * packet again, which may happen if all buttons are
1198 * pressed. To avoid this let's reset the 4th bit which
1201 psmouse
->packet
[3] = psmouse
->packet
[6] & 0xf7;
1202 psmouse
->pktcnt
= 4;
1205 return PSMOUSE_GOOD_DATA
;
1208 static void alps_flush_packet(unsigned long data
)
1210 struct psmouse
*psmouse
= (struct psmouse
*)data
;
1211 struct alps_data
*priv
= psmouse
->private;
1213 serio_pause_rx(psmouse
->ps2dev
.serio
);
1215 if (psmouse
->pktcnt
== psmouse
->pktsize
) {
1218 * We did not any more data in reasonable amount of time.
1219 * Validate the last 3 bytes and process as a standard
1222 if ((psmouse
->packet
[3] |
1223 psmouse
->packet
[4] |
1224 psmouse
->packet
[5]) & 0x80) {
1225 psmouse_dbg(psmouse
,
1226 "refusing packet %3ph (suspected interleaved ps/2)\n",
1227 psmouse
->packet
+ 3);
1229 priv
->process_packet(psmouse
);
1231 psmouse
->pktcnt
= 0;
1234 serio_continue_rx(psmouse
->ps2dev
.serio
);
1237 static psmouse_ret_t
alps_process_byte(struct psmouse
*psmouse
)
1239 struct alps_data
*priv
= psmouse
->private;
1242 * Check if we are dealing with a bare PS/2 packet, presumably from
1243 * a device connected to the external PS/2 port. Because bare PS/2
1244 * protocol does not have enough constant bits to self-synchronize
1245 * properly we only do this if the device is fully synchronized.
1247 if (!psmouse
->out_of_sync_cnt
&& (psmouse
->packet
[0] & 0xc8) == 0x08) {
1248 if (psmouse
->pktcnt
== 3) {
1249 alps_report_bare_ps2_packet(psmouse
, psmouse
->packet
,
1251 return PSMOUSE_FULL_PACKET
;
1253 return PSMOUSE_GOOD_DATA
;
1256 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */
1258 if ((priv
->flags
& ALPS_PS2_INTERLEAVED
) &&
1259 psmouse
->pktcnt
>= 4 && (psmouse
->packet
[3] & 0x0f) == 0x0f) {
1260 return alps_handle_interleaved_ps2(psmouse
);
1263 if (!alps_is_valid_first_byte(priv
, psmouse
->packet
[0])) {
1264 psmouse_dbg(psmouse
,
1265 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n",
1266 psmouse
->packet
[0], priv
->mask0
, priv
->byte0
);
1267 return PSMOUSE_BAD_DATA
;
1270 /* Bytes 2 - pktsize should have 0 in the highest bit */
1271 if (priv
->proto_version
< ALPS_PROTO_V5
&&
1272 psmouse
->pktcnt
>= 2 && psmouse
->pktcnt
<= psmouse
->pktsize
&&
1273 (psmouse
->packet
[psmouse
->pktcnt
- 1] & 0x80)) {
1274 psmouse_dbg(psmouse
, "refusing packet[%i] = %x\n",
1275 psmouse
->pktcnt
- 1,
1276 psmouse
->packet
[psmouse
->pktcnt
- 1]);
1278 if (priv
->proto_version
== ALPS_PROTO_V3
&&
1279 psmouse
->pktcnt
== psmouse
->pktsize
) {
1281 * Some Dell boxes, such as Latitude E6440 or E7440
1282 * with closed lid, quite often smash last byte of
1283 * otherwise valid packet with 0xff. Given that the
1284 * next packet is very likely to be valid let's
1285 * report PSMOUSE_FULL_PACKET but not process data,
1286 * rather than reporting PSMOUSE_BAD_DATA and
1289 return PSMOUSE_FULL_PACKET
;
1292 return PSMOUSE_BAD_DATA
;
1295 if (priv
->proto_version
== ALPS_PROTO_V7
&&
1296 !alps_is_valid_package_v7(psmouse
)) {
1297 psmouse_dbg(psmouse
, "refusing packet[%i] = %x\n",
1298 psmouse
->pktcnt
- 1,
1299 psmouse
->packet
[psmouse
->pktcnt
- 1]);
1300 return PSMOUSE_BAD_DATA
;
1303 if (psmouse
->pktcnt
== psmouse
->pktsize
) {
1304 priv
->process_packet(psmouse
);
1305 return PSMOUSE_FULL_PACKET
;
1308 return PSMOUSE_GOOD_DATA
;
1311 static int alps_command_mode_send_nibble(struct psmouse
*psmouse
, int nibble
)
1313 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
1314 struct alps_data
*priv
= psmouse
->private;
1316 unsigned char *param
;
1317 unsigned char dummy
[4];
1319 BUG_ON(nibble
> 0xf);
1321 command
= priv
->nibble_commands
[nibble
].command
;
1322 param
= (command
& 0x0f00) ?
1323 dummy
: (unsigned char *)&priv
->nibble_commands
[nibble
].data
;
1325 if (ps2_command(ps2dev
, param
, command
))
1331 static int alps_command_mode_set_addr(struct psmouse
*psmouse
, int addr
)
1333 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
1334 struct alps_data
*priv
= psmouse
->private;
1337 if (ps2_command(ps2dev
, NULL
, priv
->addr_command
))
1340 for (i
= 12; i
>= 0; i
-= 4) {
1341 nibble
= (addr
>> i
) & 0xf;
1342 if (alps_command_mode_send_nibble(psmouse
, nibble
))
1349 static int __alps_command_mode_read_reg(struct psmouse
*psmouse
, int addr
)
1351 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
1352 unsigned char param
[4];
1354 if (ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETINFO
))
1358 * The address being read is returned in the first two bytes
1359 * of the result. Check that this address matches the expected
1362 if (addr
!= ((param
[0] << 8) | param
[1]))
1368 static int alps_command_mode_read_reg(struct psmouse
*psmouse
, int addr
)
1370 if (alps_command_mode_set_addr(psmouse
, addr
))
1372 return __alps_command_mode_read_reg(psmouse
, addr
);
1375 static int __alps_command_mode_write_reg(struct psmouse
*psmouse
, u8 value
)
1377 if (alps_command_mode_send_nibble(psmouse
, (value
>> 4) & 0xf))
1379 if (alps_command_mode_send_nibble(psmouse
, value
& 0xf))
1384 static int alps_command_mode_write_reg(struct psmouse
*psmouse
, int addr
,
1387 if (alps_command_mode_set_addr(psmouse
, addr
))
1389 return __alps_command_mode_write_reg(psmouse
, value
);
1392 static int alps_rpt_cmd(struct psmouse
*psmouse
, int init_command
,
1393 int repeated_command
, unsigned char *param
)
1395 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
1398 if (init_command
&& ps2_command(ps2dev
, param
, init_command
))
1401 if (ps2_command(ps2dev
, NULL
, repeated_command
) ||
1402 ps2_command(ps2dev
, NULL
, repeated_command
) ||
1403 ps2_command(ps2dev
, NULL
, repeated_command
))
1406 param
[0] = param
[1] = param
[2] = 0xff;
1407 if (ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETINFO
))
1410 psmouse_dbg(psmouse
, "%2.2X report: %3ph\n",
1411 repeated_command
, param
);
1415 static bool alps_check_valid_firmware_id(unsigned char id
[])
1420 if (id
[0] == 0x88 &&
1423 (id
[1] & 0xf0) == 0xb0 ||
1424 (id
[1] & 0xf0) == 0xc0)) {
1431 static int alps_enter_command_mode(struct psmouse
*psmouse
)
1433 unsigned char param
[4];
1435 if (alps_rpt_cmd(psmouse
, 0, PSMOUSE_CMD_RESET_WRAP
, param
)) {
1436 psmouse_err(psmouse
, "failed to enter command mode\n");
1440 if (!alps_check_valid_firmware_id(param
)) {
1441 psmouse_dbg(psmouse
,
1442 "unknown response while entering command mode\n");
1448 static inline int alps_exit_command_mode(struct psmouse
*psmouse
)
1450 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
1451 if (ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSTREAM
))
1457 * For DualPoint devices select the device that should respond to
1458 * subsequent commands. It looks like glidepad is behind stickpointer,
1459 * I'd thought it would be other way around...
1461 static int alps_passthrough_mode_v2(struct psmouse
*psmouse
, bool enable
)
1463 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
1464 int cmd
= enable
? PSMOUSE_CMD_SETSCALE21
: PSMOUSE_CMD_SETSCALE11
;
1466 if (ps2_command(ps2dev
, NULL
, cmd
) ||
1467 ps2_command(ps2dev
, NULL
, cmd
) ||
1468 ps2_command(ps2dev
, NULL
, cmd
) ||
1469 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_DISABLE
))
1472 /* we may get 3 more bytes, just ignore them */
1473 ps2_drain(ps2dev
, 3, 100);
1478 static int alps_absolute_mode_v1_v2(struct psmouse
*psmouse
)
1480 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
1482 /* Try ALPS magic knock - 4 disable before enable */
1483 if (ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_DISABLE
) ||
1484 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_DISABLE
) ||
1485 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_DISABLE
) ||
1486 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_DISABLE
) ||
1487 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_ENABLE
))
1491 * Switch mouse to poll (remote) mode so motion data will not
1494 return ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_SETPOLL
);
1497 static int alps_monitor_mode_send_word(struct psmouse
*psmouse
, u16 word
)
1502 * b0-b11 are valid bits, send sequence is inverse.
1503 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1
1505 for (i
= 0; i
<= 8; i
+= 4) {
1506 nibble
= (word
>> i
) & 0xf;
1507 if (alps_command_mode_send_nibble(psmouse
, nibble
))
1514 static int alps_monitor_mode_write_reg(struct psmouse
*psmouse
,
1515 u16 addr
, u16 value
)
1517 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
1519 /* 0x0A0 is the command to write the word */
1520 if (ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_ENABLE
) ||
1521 alps_monitor_mode_send_word(psmouse
, 0x0A0) ||
1522 alps_monitor_mode_send_word(psmouse
, addr
) ||
1523 alps_monitor_mode_send_word(psmouse
, value
) ||
1524 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_DISABLE
))
1530 static int alps_monitor_mode(struct psmouse
*psmouse
, bool enable
)
1532 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
1535 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */
1536 if (ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_RESET_WRAP
) ||
1537 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_GETINFO
) ||
1538 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_DISABLE
) ||
1539 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_DISABLE
) ||
1540 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE21
) ||
1541 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
) ||
1542 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE21
) ||
1543 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_GETINFO
))
1546 /* EC to exit monitor mode */
1547 if (ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_RESET_WRAP
))
1554 static int alps_absolute_mode_v6(struct psmouse
*psmouse
)
1556 u16 reg_val
= 0x181;
1559 /* enter monitor mode, to write the register */
1560 if (alps_monitor_mode(psmouse
, true))
1563 ret
= alps_monitor_mode_write_reg(psmouse
, 0x000, reg_val
);
1565 if (alps_monitor_mode(psmouse
, false))
1571 static int alps_get_status(struct psmouse
*psmouse
, char *param
)
1573 /* Get status: 0xF5 0xF5 0xF5 0xE9 */
1574 if (alps_rpt_cmd(psmouse
, 0, PSMOUSE_CMD_DISABLE
, param
))
1581 * Turn touchpad tapping on or off. The sequences are:
1582 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable,
1583 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable.
1584 * My guess that 0xE9 (GetInfo) is here as a sync point.
1585 * For models that also have stickpointer (DualPoints) its tapping
1586 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but
1587 * we don't fiddle with it.
1589 static int alps_tap_mode(struct psmouse
*psmouse
, int enable
)
1591 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
1592 int cmd
= enable
? PSMOUSE_CMD_SETRATE
: PSMOUSE_CMD_SETRES
;
1593 unsigned char tap_arg
= enable
? 0x0A : 0x00;
1594 unsigned char param
[4];
1596 if (ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETINFO
) ||
1597 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_DISABLE
) ||
1598 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_DISABLE
) ||
1599 ps2_command(ps2dev
, &tap_arg
, cmd
))
1602 if (alps_get_status(psmouse
, param
))
1609 * alps_poll() - poll the touchpad for current motion packet.
1612 static int alps_poll(struct psmouse
*psmouse
)
1614 struct alps_data
*priv
= psmouse
->private;
1615 unsigned char buf
[sizeof(psmouse
->packet
)];
1618 if (priv
->flags
& ALPS_PASS
)
1619 alps_passthrough_mode_v2(psmouse
, true);
1621 poll_failed
= ps2_command(&psmouse
->ps2dev
, buf
,
1622 PSMOUSE_CMD_POLL
| (psmouse
->pktsize
<< 8)) < 0;
1624 if (priv
->flags
& ALPS_PASS
)
1625 alps_passthrough_mode_v2(psmouse
, false);
1627 if (poll_failed
|| (buf
[0] & priv
->mask0
) != priv
->byte0
)
1630 if ((psmouse
->badbyte
& 0xc8) == 0x08) {
1632 * Poll the track stick ...
1634 if (ps2_command(&psmouse
->ps2dev
, buf
, PSMOUSE_CMD_POLL
| (3 << 8)))
1638 memcpy(psmouse
->packet
, buf
, sizeof(buf
));
1642 static int alps_hw_init_v1_v2(struct psmouse
*psmouse
)
1644 struct alps_data
*priv
= psmouse
->private;
1646 if ((priv
->flags
& ALPS_PASS
) &&
1647 alps_passthrough_mode_v2(psmouse
, true)) {
1651 if (alps_tap_mode(psmouse
, true)) {
1652 psmouse_warn(psmouse
, "Failed to enable hardware tapping\n");
1656 if (alps_absolute_mode_v1_v2(psmouse
)) {
1657 psmouse_err(psmouse
, "Failed to enable absolute mode\n");
1661 if ((priv
->flags
& ALPS_PASS
) &&
1662 alps_passthrough_mode_v2(psmouse
, false)) {
1666 /* ALPS needs stream mode, otherwise it won't report any data */
1667 if (ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_SETSTREAM
)) {
1668 psmouse_err(psmouse
, "Failed to enable stream mode\n");
1675 static int alps_hw_init_v6(struct psmouse
*psmouse
)
1677 unsigned char param
[2] = {0xC8, 0x14};
1679 /* Enter passthrough mode to let trackpoint enter 6byte raw mode */
1680 if (alps_passthrough_mode_v2(psmouse
, true))
1683 if (ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
) ||
1684 ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
) ||
1685 ps2_command(&psmouse
->ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
) ||
1686 ps2_command(&psmouse
->ps2dev
, ¶m
[0], PSMOUSE_CMD_SETRATE
) ||
1687 ps2_command(&psmouse
->ps2dev
, ¶m
[1], PSMOUSE_CMD_SETRATE
))
1690 if (alps_passthrough_mode_v2(psmouse
, false))
1693 if (alps_absolute_mode_v6(psmouse
)) {
1694 psmouse_err(psmouse
, "Failed to enable absolute mode\n");
1702 * Enable or disable passthrough mode to the trackstick.
1704 static int alps_passthrough_mode_v3(struct psmouse
*psmouse
,
1705 int reg_base
, bool enable
)
1707 int reg_val
, ret
= -1;
1709 if (alps_enter_command_mode(psmouse
))
1712 reg_val
= alps_command_mode_read_reg(psmouse
, reg_base
+ 0x0008);
1721 ret
= __alps_command_mode_write_reg(psmouse
, reg_val
);
1724 if (alps_exit_command_mode(psmouse
))
1729 /* Must be in command mode when calling this function */
1730 static int alps_absolute_mode_v3(struct psmouse
*psmouse
)
1734 reg_val
= alps_command_mode_read_reg(psmouse
, 0x0004);
1739 if (__alps_command_mode_write_reg(psmouse
, reg_val
))
1745 static int alps_probe_trackstick_v3(struct psmouse
*psmouse
, int reg_base
)
1747 int ret
= -EIO
, reg_val
;
1749 if (alps_enter_command_mode(psmouse
))
1752 reg_val
= alps_command_mode_read_reg(psmouse
, reg_base
+ 0x08);
1756 /* bit 7: trackstick is present */
1757 ret
= reg_val
& 0x80 ? 0 : -ENODEV
;
1760 alps_exit_command_mode(psmouse
);
1764 static int alps_setup_trackstick_v3(struct psmouse
*psmouse
, int reg_base
)
1766 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
1768 unsigned char param
[4];
1770 if (alps_passthrough_mode_v3(psmouse
, reg_base
, true))
1774 * E7 report for the trackstick
1776 * There have been reports of failures to seem to trace back
1777 * to the above trackstick check failing. When these occur
1778 * this E7 report fails, so when that happens we continue
1779 * with the assumption that there isn't a trackstick after
1782 if (alps_rpt_cmd(psmouse
, 0, PSMOUSE_CMD_SETSCALE21
, param
)) {
1783 psmouse_warn(psmouse
, "trackstick E7 report failed\n");
1786 psmouse_dbg(psmouse
, "trackstick E7 report: %3ph\n", param
);
1789 * Not sure what this does, but it is absolutely
1790 * essential. Without it, the touchpad does not
1791 * work at all and the trackstick just emits normal
1794 if (ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
) ||
1795 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
) ||
1796 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSCALE11
) ||
1797 alps_command_mode_send_nibble(psmouse
, 0x9) ||
1798 alps_command_mode_send_nibble(psmouse
, 0x4)) {
1799 psmouse_err(psmouse
,
1800 "Error sending magic E6 sequence\n");
1806 * This ensures the trackstick packets are in the format
1807 * supported by this driver. If bit 1 isn't set the packet
1808 * format is different.
1810 if (alps_enter_command_mode(psmouse
) ||
1811 alps_command_mode_write_reg(psmouse
,
1812 reg_base
+ 0x08, 0x82) ||
1813 alps_exit_command_mode(psmouse
))
1818 if (alps_passthrough_mode_v3(psmouse
, reg_base
, false))
1824 static int alps_hw_init_v3(struct psmouse
*psmouse
)
1826 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
1828 unsigned char param
[4];
1830 reg_val
= alps_probe_trackstick_v3(psmouse
, ALPS_REG_BASE_PINNACLE
);
1831 if (reg_val
== -EIO
)
1835 alps_setup_trackstick_v3(psmouse
, ALPS_REG_BASE_PINNACLE
) == -EIO
)
1838 if (alps_enter_command_mode(psmouse
) ||
1839 alps_absolute_mode_v3(psmouse
)) {
1840 psmouse_err(psmouse
, "Failed to enter absolute mode\n");
1844 reg_val
= alps_command_mode_read_reg(psmouse
, 0x0006);
1847 if (__alps_command_mode_write_reg(psmouse
, reg_val
| 0x01))
1850 reg_val
= alps_command_mode_read_reg(psmouse
, 0x0007);
1853 if (__alps_command_mode_write_reg(psmouse
, reg_val
| 0x01))
1856 if (alps_command_mode_read_reg(psmouse
, 0x0144) == -1)
1858 if (__alps_command_mode_write_reg(psmouse
, 0x04))
1861 if (alps_command_mode_read_reg(psmouse
, 0x0159) == -1)
1863 if (__alps_command_mode_write_reg(psmouse
, 0x03))
1866 if (alps_command_mode_read_reg(psmouse
, 0x0163) == -1)
1868 if (alps_command_mode_write_reg(psmouse
, 0x0163, 0x03))
1871 if (alps_command_mode_read_reg(psmouse
, 0x0162) == -1)
1873 if (alps_command_mode_write_reg(psmouse
, 0x0162, 0x04))
1876 alps_exit_command_mode(psmouse
);
1878 /* Set rate and enable data reporting */
1880 if (ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
) ||
1881 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_ENABLE
)) {
1882 psmouse_err(psmouse
, "Failed to enable data reporting\n");
1890 * Leaving the touchpad in command mode will essentially render
1891 * it unusable until the machine reboots, so exit it here just
1894 alps_exit_command_mode(psmouse
);
1898 static int alps_get_v3_v7_resolution(struct psmouse
*psmouse
, int reg_pitch
)
1900 int reg
, x_pitch
, y_pitch
, x_electrode
, y_electrode
, x_phys
, y_phys
;
1901 struct alps_data
*priv
= psmouse
->private;
1903 reg
= alps_command_mode_read_reg(psmouse
, reg_pitch
);
1907 x_pitch
= (char)(reg
<< 4) >> 4; /* sign extend lower 4 bits */
1908 x_pitch
= 50 + 2 * x_pitch
; /* In 0.1 mm units */
1910 y_pitch
= (char)reg
>> 4; /* sign extend upper 4 bits */
1911 y_pitch
= 36 + 2 * y_pitch
; /* In 0.1 mm units */
1913 reg
= alps_command_mode_read_reg(psmouse
, reg_pitch
+ 1);
1917 x_electrode
= (char)(reg
<< 4) >> 4; /* sign extend lower 4 bits */
1918 x_electrode
= 17 + x_electrode
;
1920 y_electrode
= (char)reg
>> 4; /* sign extend upper 4 bits */
1921 y_electrode
= 13 + y_electrode
;
1923 x_phys
= x_pitch
* (x_electrode
- 1); /* In 0.1 mm units */
1924 y_phys
= y_pitch
* (y_electrode
- 1); /* In 0.1 mm units */
1926 priv
->x_res
= priv
->x_max
* 10 / x_phys
; /* units / mm */
1927 priv
->y_res
= priv
->y_max
* 10 / y_phys
; /* units / mm */
1929 psmouse_dbg(psmouse
,
1930 "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n",
1931 x_pitch
, y_pitch
, x_electrode
, y_electrode
,
1932 x_phys
/ 10, y_phys
/ 10, priv
->x_res
, priv
->y_res
);
1937 static int alps_hw_init_rushmore_v3(struct psmouse
*psmouse
)
1939 struct alps_data
*priv
= psmouse
->private;
1940 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
1941 int reg_val
, ret
= -1;
1943 if (priv
->flags
& ALPS_DUALPOINT
) {
1944 reg_val
= alps_setup_trackstick_v3(psmouse
,
1945 ALPS_REG_BASE_RUSHMORE
);
1946 if (reg_val
== -EIO
)
1948 if (reg_val
== -ENODEV
)
1949 priv
->flags
&= ~ALPS_DUALPOINT
;
1952 if (alps_enter_command_mode(psmouse
) ||
1953 alps_command_mode_read_reg(psmouse
, 0xc2d9) == -1 ||
1954 alps_command_mode_write_reg(psmouse
, 0xc2cb, 0x00))
1957 if (alps_get_v3_v7_resolution(psmouse
, 0xc2da))
1960 reg_val
= alps_command_mode_read_reg(psmouse
, 0xc2c6);
1963 if (__alps_command_mode_write_reg(psmouse
, reg_val
& 0xfd))
1966 if (alps_command_mode_write_reg(psmouse
, 0xc2c9, 0x64))
1969 /* enter absolute mode */
1970 reg_val
= alps_command_mode_read_reg(psmouse
, 0xc2c4);
1973 if (__alps_command_mode_write_reg(psmouse
, reg_val
| 0x02))
1976 alps_exit_command_mode(psmouse
);
1977 return ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_ENABLE
);
1980 alps_exit_command_mode(psmouse
);
1984 /* Must be in command mode when calling this function */
1985 static int alps_absolute_mode_v4(struct psmouse
*psmouse
)
1989 reg_val
= alps_command_mode_read_reg(psmouse
, 0x0004);
1994 if (__alps_command_mode_write_reg(psmouse
, reg_val
))
2000 static int alps_hw_init_v4(struct psmouse
*psmouse
)
2002 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
2003 unsigned char param
[4];
2005 if (alps_enter_command_mode(psmouse
))
2008 if (alps_absolute_mode_v4(psmouse
)) {
2009 psmouse_err(psmouse
, "Failed to enter absolute mode\n");
2013 if (alps_command_mode_write_reg(psmouse
, 0x0007, 0x8c))
2016 if (alps_command_mode_write_reg(psmouse
, 0x0149, 0x03))
2019 if (alps_command_mode_write_reg(psmouse
, 0x0160, 0x03))
2022 if (alps_command_mode_write_reg(psmouse
, 0x017f, 0x15))
2025 if (alps_command_mode_write_reg(psmouse
, 0x0151, 0x01))
2028 if (alps_command_mode_write_reg(psmouse
, 0x0168, 0x03))
2031 if (alps_command_mode_write_reg(psmouse
, 0x014a, 0x03))
2034 if (alps_command_mode_write_reg(psmouse
, 0x0161, 0x03))
2037 alps_exit_command_mode(psmouse
);
2040 * This sequence changes the output from a 9-byte to an
2041 * 8-byte format. All the same data seems to be present,
2042 * just in a more compact format.
2047 if (ps2_command(ps2dev
, ¶m
[0], PSMOUSE_CMD_SETRATE
) ||
2048 ps2_command(ps2dev
, ¶m
[1], PSMOUSE_CMD_SETRATE
) ||
2049 ps2_command(ps2dev
, ¶m
[2], PSMOUSE_CMD_SETRATE
) ||
2050 ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETID
))
2053 /* Set rate and enable data reporting */
2055 if (ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRATE
) ||
2056 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_ENABLE
)) {
2057 psmouse_err(psmouse
, "Failed to enable data reporting\n");
2065 * Leaving the touchpad in command mode will essentially render
2066 * it unusable until the machine reboots, so exit it here just
2069 alps_exit_command_mode(psmouse
);
2073 static int alps_dolphin_get_device_area(struct psmouse
*psmouse
,
2074 struct alps_data
*priv
)
2076 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
2077 unsigned char param
[4] = {0};
2078 int num_x_electrode
, num_y_electrode
;
2080 if (alps_enter_command_mode(psmouse
))
2084 if (ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_RESET_WRAP
) ||
2085 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETPOLL
) ||
2086 ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETPOLL
) ||
2087 ps2_command(ps2dev
, ¶m
[0], PSMOUSE_CMD_SETRATE
) ||
2088 ps2_command(ps2dev
, ¶m
[0], PSMOUSE_CMD_SETRATE
))
2091 if (ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETINFO
))
2095 * Dolphin's sensor line number is not fixed. It can be calculated
2096 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET.
2097 * Further more, we can get device's x_max and y_max by multiplying
2098 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE.
2100 * e.g. When we get register's sensor_x = 11 & sensor_y = 8,
2101 * real sensor line number X = 11 + 8 = 19, and
2102 * real sensor line number Y = 8 + 1 = 9.
2103 * So, x_max = (19 - 1) * 64 = 1152, and
2104 * y_max = (9 - 1) * 64 = 512.
2106 num_x_electrode
= DOLPHIN_PROFILE_XOFFSET
+ (param
[2] & 0x0F);
2107 num_y_electrode
= DOLPHIN_PROFILE_YOFFSET
+ ((param
[2] >> 4) & 0x0F);
2108 priv
->x_bits
= num_x_electrode
;
2109 priv
->y_bits
= num_y_electrode
;
2110 priv
->x_max
= (num_x_electrode
- 1) * DOLPHIN_COUNT_PER_ELECTRODE
;
2111 priv
->y_max
= (num_y_electrode
- 1) * DOLPHIN_COUNT_PER_ELECTRODE
;
2113 if (alps_exit_command_mode(psmouse
))
2119 static int alps_hw_init_dolphin_v1(struct psmouse
*psmouse
)
2121 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
2122 unsigned char param
[2];
2124 /* This is dolphin "v1" as empirically defined by florin9doi */
2128 if (ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_SETSTREAM
) ||
2129 ps2_command(ps2dev
, ¶m
[0], PSMOUSE_CMD_SETRATE
) ||
2130 ps2_command(ps2dev
, ¶m
[1], PSMOUSE_CMD_SETRATE
))
2136 static int alps_hw_init_v7(struct psmouse
*psmouse
)
2138 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
2139 int reg_val
, ret
= -1;
2141 if (alps_enter_command_mode(psmouse
) ||
2142 alps_command_mode_read_reg(psmouse
, 0xc2d9) == -1)
2145 if (alps_get_v3_v7_resolution(psmouse
, 0xc397))
2148 if (alps_command_mode_write_reg(psmouse
, 0xc2c9, 0x64))
2151 reg_val
= alps_command_mode_read_reg(psmouse
, 0xc2c4);
2154 if (__alps_command_mode_write_reg(psmouse
, reg_val
| 0x02))
2157 alps_exit_command_mode(psmouse
);
2158 return ps2_command(ps2dev
, NULL
, PSMOUSE_CMD_ENABLE
);
2161 alps_exit_command_mode(psmouse
);
2165 static void alps_set_defaults(struct alps_data
*priv
)
2169 priv
->flags
= ALPS_DUALPOINT
;
2176 switch (priv
->proto_version
) {
2179 priv
->hw_init
= alps_hw_init_v1_v2
;
2180 priv
->process_packet
= alps_process_packet_v1_v2
;
2181 priv
->set_abs_params
= alps_set_abs_params_st
;
2186 priv
->hw_init
= alps_hw_init_v3
;
2187 priv
->process_packet
= alps_process_packet_v3
;
2188 priv
->set_abs_params
= alps_set_abs_params_mt
;
2189 priv
->decode_fields
= alps_decode_pinnacle
;
2190 priv
->nibble_commands
= alps_v3_nibble_commands
;
2191 priv
->addr_command
= PSMOUSE_CMD_RESET_WRAP
;
2194 priv
->hw_init
= alps_hw_init_v4
;
2195 priv
->process_packet
= alps_process_packet_v4
;
2196 priv
->set_abs_params
= alps_set_abs_params_mt
;
2197 priv
->nibble_commands
= alps_v4_nibble_commands
;
2198 priv
->addr_command
= PSMOUSE_CMD_DISABLE
;
2201 priv
->hw_init
= alps_hw_init_dolphin_v1
;
2202 priv
->process_packet
= alps_process_touchpad_packet_v3_v5
;
2203 priv
->decode_fields
= alps_decode_dolphin
;
2204 priv
->set_abs_params
= alps_set_abs_params_mt
;
2205 priv
->nibble_commands
= alps_v3_nibble_commands
;
2206 priv
->addr_command
= PSMOUSE_CMD_RESET_WRAP
;
2216 priv
->hw_init
= alps_hw_init_v6
;
2217 priv
->process_packet
= alps_process_packet_v6
;
2218 priv
->set_abs_params
= alps_set_abs_params_st
;
2219 priv
->nibble_commands
= alps_v6_nibble_commands
;
2224 priv
->hw_init
= alps_hw_init_v7
;
2225 priv
->process_packet
= alps_process_packet_v7
;
2226 priv
->decode_fields
= alps_decode_packet_v7
;
2227 priv
->set_abs_params
= alps_set_abs_params_mt
;
2228 priv
->nibble_commands
= alps_v3_nibble_commands
;
2229 priv
->addr_command
= PSMOUSE_CMD_RESET_WRAP
;
2230 priv
->x_max
= 0xfff;
2231 priv
->y_max
= 0x7ff;
2235 if (priv
->fw_ver
[1] != 0xba)
2236 priv
->flags
|= ALPS_BUTTONPAD
;
2241 static int alps_match_table(struct psmouse
*psmouse
, struct alps_data
*priv
,
2242 unsigned char *e7
, unsigned char *ec
)
2244 const struct alps_model_info
*model
;
2247 for (i
= 0; i
< ARRAY_SIZE(alps_model_data
); i
++) {
2248 model
= &alps_model_data
[i
];
2250 if (!memcmp(e7
, model
->signature
, sizeof(model
->signature
)) &&
2251 (!model
->command_mode_resp
||
2252 model
->command_mode_resp
== ec
[2])) {
2254 priv
->proto_version
= model
->proto_version
;
2255 alps_set_defaults(priv
);
2257 priv
->flags
= model
->flags
;
2258 priv
->byte0
= model
->byte0
;
2259 priv
->mask0
= model
->mask0
;
2268 static int alps_identify(struct psmouse
*psmouse
, struct alps_data
*priv
)
2270 unsigned char e6
[4], e7
[4], ec
[4];
2273 * First try "E6 report".
2274 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed.
2275 * The bits 0-2 of the first byte will be 1s if some buttons are
2278 if (alps_rpt_cmd(psmouse
, PSMOUSE_CMD_SETRES
,
2279 PSMOUSE_CMD_SETSCALE11
, e6
))
2282 if ((e6
[0] & 0xf8) != 0 || e6
[1] != 0 || (e6
[2] != 10 && e6
[2] != 100))
2286 * Now get the "E7" and "EC" reports. These will uniquely identify
2287 * most ALPS touchpads.
2289 if (alps_rpt_cmd(psmouse
, PSMOUSE_CMD_SETRES
,
2290 PSMOUSE_CMD_SETSCALE21
, e7
) ||
2291 alps_rpt_cmd(psmouse
, PSMOUSE_CMD_SETRES
,
2292 PSMOUSE_CMD_RESET_WRAP
, ec
) ||
2293 alps_exit_command_mode(psmouse
))
2296 /* Save the Firmware version */
2297 memcpy(priv
->fw_ver
, ec
, 3);
2299 if (alps_match_table(psmouse
, priv
, e7
, ec
) == 0) {
2301 } else if (e7
[0] == 0x73 && e7
[1] == 0x03 && e7
[2] == 0x50 &&
2302 ec
[0] == 0x73 && (ec
[1] == 0x01 || ec
[1] == 0x02)) {
2303 priv
->proto_version
= ALPS_PROTO_V5
;
2304 alps_set_defaults(priv
);
2305 if (alps_dolphin_get_device_area(psmouse
, priv
))
2309 } else if (ec
[0] == 0x88 &&
2310 ((ec
[1] & 0xf0) == 0xb0 || (ec
[1] & 0xf0) == 0xc0)) {
2311 priv
->proto_version
= ALPS_PROTO_V7
;
2312 alps_set_defaults(priv
);
2315 } else if (ec
[0] == 0x88 && ec
[1] == 0x08) {
2316 priv
->proto_version
= ALPS_PROTO_V3
;
2317 alps_set_defaults(priv
);
2319 priv
->hw_init
= alps_hw_init_rushmore_v3
;
2320 priv
->decode_fields
= alps_decode_rushmore
;
2323 priv
->flags
|= ALPS_IS_RUSHMORE
;
2325 /* hack to make addr_command, nibble_command available */
2326 psmouse
->private = priv
;
2328 if (alps_probe_trackstick_v3(psmouse
, ALPS_REG_BASE_RUSHMORE
))
2329 priv
->flags
&= ~ALPS_DUALPOINT
;
2332 } else if (ec
[0] == 0x88 && ec
[1] == 0x07 &&
2333 ec
[2] >= 0x90 && ec
[2] <= 0x9d) {
2334 priv
->proto_version
= ALPS_PROTO_V3
;
2335 alps_set_defaults(priv
);
2340 psmouse_dbg(psmouse
,
2341 "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7
, ec
);
2346 static int alps_reconnect(struct psmouse
*psmouse
)
2348 struct alps_data
*priv
= psmouse
->private;
2350 psmouse_reset(psmouse
);
2352 if (alps_identify(psmouse
, priv
) < 0)
2355 return priv
->hw_init(psmouse
);
2358 static void alps_disconnect(struct psmouse
*psmouse
)
2360 struct alps_data
*priv
= psmouse
->private;
2362 psmouse_reset(psmouse
);
2363 del_timer_sync(&priv
->timer
);
2364 input_unregister_device(priv
->dev2
);
2368 static void alps_set_abs_params_st(struct alps_data
*priv
,
2369 struct input_dev
*dev1
)
2371 input_set_abs_params(dev1
, ABS_X
, 0, priv
->x_max
, 0, 0);
2372 input_set_abs_params(dev1
, ABS_Y
, 0, priv
->y_max
, 0, 0);
2375 static void alps_set_abs_params_mt(struct alps_data
*priv
,
2376 struct input_dev
*dev1
)
2378 input_set_abs_params(dev1
, ABS_MT_POSITION_X
, 0, priv
->x_max
, 0, 0);
2379 input_set_abs_params(dev1
, ABS_MT_POSITION_Y
, 0, priv
->y_max
, 0, 0);
2381 input_abs_set_res(dev1
, ABS_MT_POSITION_X
, priv
->x_res
);
2382 input_abs_set_res(dev1
, ABS_MT_POSITION_Y
, priv
->y_res
);
2384 input_mt_init_slots(dev1
, MAX_TOUCHES
, INPUT_MT_POINTER
|
2385 INPUT_MT_DROP_UNUSED
| INPUT_MT_TRACK
| INPUT_MT_SEMI_MT
);
2387 set_bit(BTN_TOOL_TRIPLETAP
, dev1
->keybit
);
2388 set_bit(BTN_TOOL_QUADTAP
, dev1
->keybit
);
2390 /* V7 is real multi-touch */
2391 if (priv
->proto_version
== ALPS_PROTO_V7
)
2392 clear_bit(INPUT_PROP_SEMI_MT
, dev1
->propbit
);
2395 int alps_init(struct psmouse
*psmouse
)
2397 struct alps_data
*priv
;
2398 struct input_dev
*dev1
= psmouse
->dev
, *dev2
;
2400 priv
= kzalloc(sizeof(struct alps_data
), GFP_KERNEL
);
2401 dev2
= input_allocate_device();
2406 setup_timer(&priv
->timer
, alps_flush_packet
, (unsigned long)psmouse
);
2408 psmouse
->private = priv
;
2410 psmouse_reset(psmouse
);
2412 if (alps_identify(psmouse
, priv
) < 0)
2415 if (priv
->hw_init(psmouse
))
2419 * Undo part of setup done for us by psmouse core since touchpad
2420 * is not a relative device.
2422 __clear_bit(EV_REL
, dev1
->evbit
);
2423 __clear_bit(REL_X
, dev1
->relbit
);
2424 __clear_bit(REL_Y
, dev1
->relbit
);
2427 * Now set up our capabilities.
2429 dev1
->evbit
[BIT_WORD(EV_KEY
)] |= BIT_MASK(EV_KEY
);
2430 dev1
->keybit
[BIT_WORD(BTN_TOUCH
)] |= BIT_MASK(BTN_TOUCH
);
2431 dev1
->keybit
[BIT_WORD(BTN_TOOL_FINGER
)] |= BIT_MASK(BTN_TOOL_FINGER
);
2432 dev1
->keybit
[BIT_WORD(BTN_LEFT
)] |=
2433 BIT_MASK(BTN_LEFT
) | BIT_MASK(BTN_RIGHT
);
2435 dev1
->evbit
[BIT_WORD(EV_ABS
)] |= BIT_MASK(EV_ABS
);
2437 priv
->set_abs_params(priv
, dev1
);
2438 /* No pressure on V7 */
2439 if (priv
->proto_version
!= ALPS_PROTO_V7
)
2440 input_set_abs_params(dev1
, ABS_PRESSURE
, 0, 127, 0, 0);
2442 if (priv
->flags
& ALPS_WHEEL
) {
2443 dev1
->evbit
[BIT_WORD(EV_REL
)] |= BIT_MASK(EV_REL
);
2444 dev1
->relbit
[BIT_WORD(REL_WHEEL
)] |= BIT_MASK(REL_WHEEL
);
2447 if (priv
->flags
& (ALPS_FW_BK_1
| ALPS_FW_BK_2
)) {
2448 dev1
->keybit
[BIT_WORD(BTN_FORWARD
)] |= BIT_MASK(BTN_FORWARD
);
2449 dev1
->keybit
[BIT_WORD(BTN_BACK
)] |= BIT_MASK(BTN_BACK
);
2452 if (priv
->flags
& ALPS_FOUR_BUTTONS
) {
2453 dev1
->keybit
[BIT_WORD(BTN_0
)] |= BIT_MASK(BTN_0
);
2454 dev1
->keybit
[BIT_WORD(BTN_1
)] |= BIT_MASK(BTN_1
);
2455 dev1
->keybit
[BIT_WORD(BTN_2
)] |= BIT_MASK(BTN_2
);
2456 dev1
->keybit
[BIT_WORD(BTN_3
)] |= BIT_MASK(BTN_3
);
2457 } else if (priv
->flags
& ALPS_BUTTONPAD
) {
2458 set_bit(INPUT_PROP_BUTTONPAD
, dev1
->propbit
);
2459 clear_bit(BTN_RIGHT
, dev1
->keybit
);
2461 dev1
->keybit
[BIT_WORD(BTN_MIDDLE
)] |= BIT_MASK(BTN_MIDDLE
);
2464 if (priv
->flags
& ALPS_DUALPOINT
) {
2466 * format of input device name is: "protocol vendor name"
2467 * see function psmouse_switch_protocol() in psmouse-base.c
2469 dev2
->name
= "AlpsPS/2 ALPS DualPoint Stick";
2470 dev2
->id
.product
= PSMOUSE_ALPS
;
2471 dev2
->id
.version
= priv
->proto_version
;
2473 dev2
->name
= "PS/2 ALPS Mouse";
2474 dev2
->id
.product
= PSMOUSE_PS2
;
2475 dev2
->id
.version
= 0x0000;
2478 snprintf(priv
->phys
, sizeof(priv
->phys
), "%s/input1", psmouse
->ps2dev
.serio
->phys
);
2479 dev2
->phys
= priv
->phys
;
2480 dev2
->id
.bustype
= BUS_I8042
;
2481 dev2
->id
.vendor
= 0x0002;
2482 dev2
->dev
.parent
= &psmouse
->ps2dev
.serio
->dev
;
2484 dev2
->evbit
[0] = BIT_MASK(EV_KEY
) | BIT_MASK(EV_REL
);
2485 dev2
->relbit
[BIT_WORD(REL_X
)] = BIT_MASK(REL_X
) | BIT_MASK(REL_Y
);
2486 dev2
->keybit
[BIT_WORD(BTN_LEFT
)] =
2487 BIT_MASK(BTN_LEFT
) | BIT_MASK(BTN_MIDDLE
) | BIT_MASK(BTN_RIGHT
);
2489 __set_bit(INPUT_PROP_POINTER
, dev2
->propbit
);
2490 if (priv
->flags
& ALPS_DUALPOINT
)
2491 __set_bit(INPUT_PROP_POINTING_STICK
, dev2
->propbit
);
2493 if (input_register_device(priv
->dev2
))
2496 psmouse
->protocol_handler
= alps_process_byte
;
2497 psmouse
->poll
= alps_poll
;
2498 psmouse
->disconnect
= alps_disconnect
;
2499 psmouse
->reconnect
= alps_reconnect
;
2500 psmouse
->pktsize
= priv
->proto_version
== ALPS_PROTO_V4
? 8 : 6;
2502 /* We are having trouble resyncing ALPS touchpads so disable it for now */
2503 psmouse
->resync_time
= 0;
2505 /* Allow 2 invalid packets without resetting device */
2506 psmouse
->resetafter
= psmouse
->pktsize
* 2;
2511 psmouse_reset(psmouse
);
2512 input_free_device(dev2
);
2514 psmouse
->private = NULL
;
2518 int alps_detect(struct psmouse
*psmouse
, bool set_properties
)
2520 struct alps_data dummy
;
2522 if (alps_identify(psmouse
, &dummy
) < 0)
2525 if (set_properties
) {
2526 psmouse
->vendor
= "ALPS";
2527 psmouse
->name
= dummy
.flags
& ALPS_DUALPOINT
?
2528 "DualPoint TouchPad" : "GlidePoint";
2529 psmouse
->model
= dummy
.proto_version
<< 8;