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 */
74 #define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */
75 #define ALPS_PASS 0x04 /* device has a pass-through port */
77 #define ALPS_WHEEL 0x08 /* hardware wheel present */
78 #define ALPS_FW_BK_1 0x10 /* front & back buttons present */
79 #define ALPS_FW_BK_2 0x20 /* front & back buttons present */
80 #define ALPS_FOUR_BUTTONS 0x40 /* 4 direction button present */
81 #define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with
84 static const struct alps_model_info alps_model_data[] = {
85 { { 0x32, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Toshiba Salellite Pro M10 */
86 { { 0x33, 0x02, 0x0a }, 0x00, ALPS_PROTO_V1, 0x88, 0xf8, 0 }, /* UMAX-530T */
87 { { 0x53, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
88 { { 0x53, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
89 { { 0x60, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, /* HP ze1115 */
90 { { 0x63, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
91 { { 0x63, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
92 { { 0x63, 0x02, 0x28 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Fujitsu Siemens S6010 */
93 { { 0x63, 0x02, 0x3c }, 0x00, ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL }, /* Toshiba Satellite S2400-103 */
94 { { 0x63, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 }, /* NEC Versa L320 */
95 { { 0x63, 0x02, 0x64 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
96 { { 0x63, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D800 */
97 { { 0x73, 0x00, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT }, /* ThinkPad R61 8918-5QG */
98 { { 0x73, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 },
99 { { 0x73, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Ahtec Laptop */
100 { { 0x20, 0x02, 0x0e }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* XXX */
101 { { 0x22, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT },
102 { { 0x22, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D600 */
103 /* Dell Latitude E5500, E6400, E6500, Precision M4400 */
104 { { 0x62, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf,
105 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED },
106 { { 0x73, 0x00, 0x14 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_DUALPOINT }, /* Dell XT2 */
107 { { 0x73, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS }, /* Dell Vostro 1400 */
108 { { 0x52, 0x01, 0x14 }, 0x00, ALPS_PROTO_V2, 0xff, 0xff,
109 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED }, /* Toshiba Tecra A11-11L */
110 { { 0x73, 0x02, 0x64 }, 0x8a, ALPS_PROTO_V4, 0x8f, 0x8f, 0 },
113 static void alps_set_abs_params_st(struct alps_data *priv,
114 struct input_dev *dev1);
115 static void alps_set_abs_params_mt(struct alps_data *priv,
116 struct input_dev *dev1);
119 * XXX - this entry is suspicious. First byte has zero lower nibble,
120 * which is what a normal mouse would report. Also, the value 0x0e
121 * isn't valid per PS/2 spec.
124 /* Packet formats are described in Documentation/input/alps.txt */
126 static bool alps_is_valid_first_byte(struct alps_data *priv,
129 return (data & priv->mask0) == priv->byte0;
132 static void alps_report_buttons(struct psmouse *psmouse,
133 struct input_dev *dev1, struct input_dev *dev2,
134 int left, int right, int middle)
136 struct input_dev *dev;
139 * If shared button has already been reported on the
140 * other device (dev2) then this event should be also
141 * sent through that device.
143 dev = test_bit(BTN_LEFT, dev2->key) ? dev2 : dev1;
144 input_report_key(dev, BTN_LEFT, left);
146 dev = test_bit(BTN_RIGHT, dev2->key) ? dev2 : dev1;
147 input_report_key(dev, BTN_RIGHT, right);
149 dev = test_bit(BTN_MIDDLE, dev2->key) ? dev2 : dev1;
150 input_report_key(dev, BTN_MIDDLE, middle);
153 * Sync the _other_ device now, we'll do the first
154 * device later once we report the rest of the events.
159 static void alps_process_packet_v1_v2(struct psmouse *psmouse)
161 struct alps_data *priv = psmouse->private;
162 unsigned char *packet = psmouse->packet;
163 struct input_dev *dev = psmouse->dev;
164 struct input_dev *dev2 = priv->dev2;
165 int x, y, z, ges, fin, left, right, middle;
166 int back = 0, forward = 0;
168 if (priv->proto_version == ALPS_PROTO_V1) {
169 left = packet[2] & 0x10;
170 right = packet[2] & 0x08;
172 x = packet[1] | ((packet[0] & 0x07) << 7);
173 y = packet[4] | ((packet[3] & 0x07) << 7);
176 left = packet[3] & 1;
177 right = packet[3] & 2;
178 middle = packet[3] & 4;
179 x = packet[1] | ((packet[2] & 0x78) << (7 - 3));
180 y = packet[4] | ((packet[3] & 0x70) << (7 - 4));
184 if (priv->flags & ALPS_FW_BK_1) {
185 back = packet[0] & 0x10;
186 forward = packet[2] & 4;
189 if (priv->flags & ALPS_FW_BK_2) {
190 back = packet[3] & 4;
191 forward = packet[2] & 4;
192 if ((middle = forward && back))
199 if ((priv->flags & ALPS_DUALPOINT) && z == 127) {
200 input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x));
201 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y));
203 alps_report_buttons(psmouse, dev2, dev, left, right, middle);
209 alps_report_buttons(psmouse, dev, dev2, left, right, middle);
211 /* Convert hardware tap to a reasonable Z value */
216 * A "tap and drag" operation is reported by the hardware as a transition
217 * from (!fin && ges) to (fin && ges). This should be translated to the
218 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually.
220 if (ges && fin && !priv->prev_fin) {
221 input_report_abs(dev, ABS_X, x);
222 input_report_abs(dev, ABS_Y, y);
223 input_report_abs(dev, ABS_PRESSURE, 0);
224 input_report_key(dev, BTN_TOOL_FINGER, 0);
227 priv->prev_fin = fin;
230 input_report_key(dev, BTN_TOUCH, 1);
232 input_report_key(dev, BTN_TOUCH, 0);
235 input_report_abs(dev, ABS_X, x);
236 input_report_abs(dev, ABS_Y, y);
239 input_report_abs(dev, ABS_PRESSURE, z);
240 input_report_key(dev, BTN_TOOL_FINGER, z > 0);
242 if (priv->flags & ALPS_WHEEL)
243 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07));
245 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
246 input_report_key(dev, BTN_FORWARD, forward);
247 input_report_key(dev, BTN_BACK, back);
250 if (priv->flags & ALPS_FOUR_BUTTONS) {
251 input_report_key(dev, BTN_0, packet[2] & 4);
252 input_report_key(dev, BTN_1, packet[0] & 0x10);
253 input_report_key(dev, BTN_2, packet[3] & 4);
254 input_report_key(dev, BTN_3, packet[0] & 0x20);
261 * Process bitmap data from v3 and v4 protocols. Returns the number of
262 * fingers detected. A return value of 0 means at least one of the
265 * The bitmaps don't have enough data to track fingers, so this function
266 * only generates points representing a bounding box of all contacts.
267 * These points are returned in x1, y1, x2, and y2 when the return value
270 static int alps_process_bitmap(struct alps_data *priv,
271 unsigned int x_map, unsigned int y_map,
272 int *x1, int *y1, int *x2, int *y2)
274 struct alps_bitmap_point {
279 int fingers_x = 0, fingers_y = 0, fingers;
280 int i, bit, prev_bit;
281 struct alps_bitmap_point x_low = {0,}, x_high = {0,};
282 struct alps_bitmap_point y_low = {0,}, y_high = {0,};
283 struct alps_bitmap_point *point;
285 if (!x_map || !y_map)
288 *x1 = *y1 = *x2 = *y2 = 0;
292 for (i = 0; x_map != 0; i++, x_map >>= 1) {
296 point->start_bit = i;
310 * y bitmap is reversed for what we need (lower positions are in
311 * higher bits), so we process from the top end.
313 y_map = y_map << (sizeof(y_map) * BITS_PER_BYTE - priv->y_bits);
316 for (i = 0; y_map != 0; i++, y_map <<= 1) {
317 bit = y_map & (1 << (sizeof(y_map) * BITS_PER_BYTE - 1));
320 point->start_bit = i;
334 * Fingers can overlap, so we use the maximum count of fingers
335 * on either axis as the finger count.
337 fingers = max(fingers_x, fingers_y);
340 * If total fingers is > 1 but either axis reports only a single
341 * contact, we have overlapping or adjacent fingers. For the
342 * purposes of creating a bounding box, divide the single contact
343 * (roughly) equally between the two points.
346 if (fingers_x == 1) {
347 i = x_low.num_bits / 2;
348 x_low.num_bits = x_low.num_bits - i;
349 x_high.start_bit = x_low.start_bit + i;
350 x_high.num_bits = max(i, 1);
351 } else if (fingers_y == 1) {
352 i = y_low.num_bits / 2;
353 y_low.num_bits = y_low.num_bits - i;
354 y_high.start_bit = y_low.start_bit + i;
355 y_high.num_bits = max(i, 1);
359 *x1 = (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) /
360 (2 * (priv->x_bits - 1));
361 *y1 = (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) /
362 (2 * (priv->y_bits - 1));
366 (2 * x_high.start_bit + x_high.num_bits - 1)) /
367 (2 * (priv->x_bits - 1));
369 (2 * y_high.start_bit + y_high.num_bits - 1)) /
370 (2 * (priv->y_bits - 1));
376 static void alps_set_slot(struct input_dev *dev, int slot, bool active,
379 input_mt_slot(dev, slot);
380 input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
382 input_report_abs(dev, ABS_MT_POSITION_X, x);
383 input_report_abs(dev, ABS_MT_POSITION_Y, y);
387 static void alps_report_semi_mt_data(struct input_dev *dev, int num_fingers,
388 int x1, int y1, int x2, int y2)
390 alps_set_slot(dev, 0, num_fingers != 0, x1, y1);
391 alps_set_slot(dev, 1, num_fingers == 2, x2, y2);
394 static void alps_process_trackstick_packet_v3(struct psmouse *psmouse)
396 struct alps_data *priv = psmouse->private;
397 unsigned char *packet = psmouse->packet;
398 struct input_dev *dev = priv->dev2;
399 int x, y, z, left, right, middle;
401 /* Sanity check packet */
402 if (!(packet[0] & 0x40)) {
403 psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n");
408 * There's a special packet that seems to indicate the end
409 * of a stream of trackstick data. Filter these out.
411 if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f)
414 x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f));
415 y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f));
416 z = (packet[4] & 0x7c) >> 2;
419 * The x and y values tend to be quite large, and when used
420 * alone the trackstick is difficult to use. Scale them down
426 input_report_rel(dev, REL_X, x);
427 input_report_rel(dev, REL_Y, -y);
430 * Most ALPS models report the trackstick buttons in the touchpad
431 * packets, but a few report them here. No reliable way has been
432 * found to differentiate between the models upfront, so we enable
433 * the quirk in response to seeing a button press in the trackstick
436 left = packet[3] & 0x01;
437 right = packet[3] & 0x02;
438 middle = packet[3] & 0x04;
440 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) &&
441 (left || right || middle))
442 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS;
444 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) {
445 input_report_key(dev, BTN_LEFT, left);
446 input_report_key(dev, BTN_RIGHT, right);
447 input_report_key(dev, BTN_MIDDLE, middle);
454 static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p)
456 f->left = !!(p[3] & 0x01);
457 f->right = !!(p[3] & 0x02);
458 f->middle = !!(p[3] & 0x04);
460 f->ts_left = !!(p[3] & 0x10);
461 f->ts_right = !!(p[3] & 0x20);
462 f->ts_middle = !!(p[3] & 0x40);
465 static void alps_decode_pinnacle(struct alps_fields *f, unsigned char *p)
467 f->first_mp = !!(p[4] & 0x40);
468 f->is_mp = !!(p[0] & 0x40);
470 f->fingers = (p[5] & 0x3) + 1;
471 f->x_map = ((p[4] & 0x7e) << 8) |
472 ((p[1] & 0x7f) << 2) |
473 ((p[0] & 0x30) >> 4);
474 f->y_map = ((p[3] & 0x70) << 4) |
475 ((p[2] & 0x7f) << 1) |
478 f->x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) |
479 ((p[0] & 0x30) >> 4);
480 f->y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f);
483 alps_decode_buttons_v3(f, p);
486 static void alps_decode_rushmore(struct alps_fields *f, unsigned char *p)
488 alps_decode_pinnacle(f, p);
490 f->x_map |= (p[5] & 0x10) << 11;
491 f->y_map |= (p[5] & 0x20) << 6;
494 static void alps_decode_dolphin(struct alps_fields *f, unsigned char *p)
496 f->first_mp = !!(p[0] & 0x02);
497 f->is_mp = !!(p[0] & 0x20);
499 f->fingers = ((p[0] & 0x6) >> 1 |
501 f->x_map = ((p[2] & 0x60) >> 5) |
502 ((p[4] & 0x7f) << 2) |
503 ((p[5] & 0x7f) << 9) |
504 ((p[3] & 0x07) << 16) |
505 ((p[3] & 0x70) << 15) |
506 ((p[0] & 0x01) << 22);
507 f->y_map = (p[1] & 0x7f) |
508 ((p[2] & 0x1f) << 7);
510 f->x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7));
511 f->y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3));
512 f->z = (p[0] & 4) ? 0 : p[5] & 0x7f;
514 alps_decode_buttons_v3(f, p);
517 static void alps_process_touchpad_packet_v3(struct psmouse *psmouse)
519 struct alps_data *priv = psmouse->private;
520 unsigned char *packet = psmouse->packet;
521 struct input_dev *dev = psmouse->dev;
522 struct input_dev *dev2 = priv->dev2;
523 int x1 = 0, y1 = 0, x2 = 0, y2 = 0;
524 int fingers = 0, bmap_fingers;
525 struct alps_fields f;
527 priv->decode_fields(&f, packet);
530 * There's no single feature of touchpad position and bitmap packets
531 * that can be used to distinguish between them. We rely on the fact
532 * that a bitmap packet should always follow a position packet with
533 * bit 6 of packet[4] set.
535 if (priv->multi_packet) {
537 * Sometimes a position packet will indicate a multi-packet
538 * sequence, but then what follows is another position
539 * packet. Check for this, and when it happens process the
540 * position packet as usual.
544 bmap_fingers = alps_process_bitmap(priv,
549 * We shouldn't report more than one finger if
550 * we don't have two coordinates.
552 if (fingers > 1 && bmap_fingers < 2)
553 fingers = bmap_fingers;
555 /* Now process position packet */
556 priv->decode_fields(&f, priv->multi_data);
558 priv->multi_packet = 0;
563 * Bit 6 of byte 0 is not usually set in position packets. The only
564 * times it seems to be set is in situations where the data is
565 * suspect anyway, e.g. a palm resting flat on the touchpad. Given
566 * this combined with the fact that this bit is useful for filtering
567 * out misidentified bitmap packets, we reject anything with this
573 if (!priv->multi_packet && f.first_mp) {
574 priv->multi_packet = 1;
575 memcpy(priv->multi_data, packet, sizeof(priv->multi_data));
579 priv->multi_packet = 0;
582 * Sometimes the hardware sends a single packet with z = 0
583 * in the middle of a stream. Real releases generate packets
584 * with x, y, and z all zero, so these seem to be flukes.
587 if (f.x && f.y && !f.z)
591 * If we don't have MT data or the bitmaps were empty, we have
592 * to rely on ST data.
597 fingers = f.z > 0 ? 1 : 0;
601 input_report_key(dev, BTN_TOUCH, 1);
603 input_report_key(dev, BTN_TOUCH, 0);
605 alps_report_semi_mt_data(dev, fingers, x1, y1, x2, y2);
607 input_mt_report_finger_count(dev, fingers);
609 input_report_key(dev, BTN_LEFT, f.left);
610 input_report_key(dev, BTN_RIGHT, f.right);
611 input_report_key(dev, BTN_MIDDLE, f.middle);
614 input_report_abs(dev, ABS_X, f.x);
615 input_report_abs(dev, ABS_Y, f.y);
617 input_report_abs(dev, ABS_PRESSURE, f.z);
621 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) {
622 input_report_key(dev2, BTN_LEFT, f.ts_left);
623 input_report_key(dev2, BTN_RIGHT, f.ts_right);
624 input_report_key(dev2, BTN_MIDDLE, f.ts_middle);
629 static void alps_process_packet_v3(struct psmouse *psmouse)
631 unsigned char *packet = psmouse->packet;
634 * v3 protocol packets come in three types, two representing
635 * touchpad data and one representing trackstick data.
636 * Trackstick packets seem to be distinguished by always
637 * having 0x3f in the last byte. This value has never been
638 * observed in the last byte of either of the other types
641 if (packet[5] == 0x3f) {
642 alps_process_trackstick_packet_v3(psmouse);
646 alps_process_touchpad_packet_v3(psmouse);
649 static void alps_process_packet_v4(struct psmouse *psmouse)
651 struct alps_data *priv = psmouse->private;
652 unsigned char *packet = psmouse->packet;
653 struct input_dev *dev = psmouse->dev;
659 unsigned int x_bitmap, y_bitmap;
662 * v4 has a 6-byte encoding for bitmap data, but this data is
663 * broken up between 3 normal packets. Use priv->multi_packet to
664 * track our position in the bitmap packet.
666 if (packet[6] & 0x40) {
667 /* sync, reset position */
668 priv->multi_packet = 0;
671 if (WARN_ON_ONCE(priv->multi_packet > 2))
674 offset = 2 * priv->multi_packet;
675 priv->multi_data[offset] = packet[6];
676 priv->multi_data[offset + 1] = packet[7];
678 if (++priv->multi_packet > 2) {
679 priv->multi_packet = 0;
681 x_bitmap = ((priv->multi_data[2] & 0x1f) << 10) |
682 ((priv->multi_data[3] & 0x60) << 3) |
683 ((priv->multi_data[0] & 0x3f) << 2) |
684 ((priv->multi_data[1] & 0x60) >> 5);
685 y_bitmap = ((priv->multi_data[5] & 0x01) << 10) |
686 ((priv->multi_data[3] & 0x1f) << 5) |
687 (priv->multi_data[1] & 0x1f);
689 fingers = alps_process_bitmap(priv, x_bitmap, y_bitmap,
693 priv->fingers = fingers;
700 left = packet[4] & 0x01;
701 right = packet[4] & 0x02;
703 x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) |
704 ((packet[0] & 0x30) >> 4);
705 y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f);
706 z = packet[5] & 0x7f;
709 * If there were no contacts in the bitmap, use ST
710 * points in MT reports.
711 * If there were two contacts or more, report MT data.
713 if (priv->fingers < 2) {
716 fingers = z > 0 ? 1 : 0;
718 fingers = priv->fingers;
726 input_report_key(dev, BTN_TOUCH, 1);
728 input_report_key(dev, BTN_TOUCH, 0);
730 alps_report_semi_mt_data(dev, fingers, x1, y1, x2, y2);
732 input_mt_report_finger_count(dev, fingers);
734 input_report_key(dev, BTN_LEFT, left);
735 input_report_key(dev, BTN_RIGHT, right);
738 input_report_abs(dev, ABS_X, x);
739 input_report_abs(dev, ABS_Y, y);
741 input_report_abs(dev, ABS_PRESSURE, z);
746 static void alps_report_bare_ps2_packet(struct psmouse *psmouse,
747 unsigned char packet[],
750 struct alps_data *priv = psmouse->private;
751 struct input_dev *dev2 = priv->dev2;
754 alps_report_buttons(psmouse, dev2, psmouse->dev,
755 packet[0] & 1, packet[0] & 2, packet[0] & 4);
757 input_report_rel(dev2, REL_X,
758 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0);
759 input_report_rel(dev2, REL_Y,
760 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0);
765 static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse)
767 struct alps_data *priv = psmouse->private;
769 if (psmouse->pktcnt < 6)
770 return PSMOUSE_GOOD_DATA;
772 if (psmouse->pktcnt == 6) {
774 * Start a timer to flush the packet if it ends up last
775 * 6-byte packet in the stream. Timer needs to fire
776 * psmouse core times out itself. 20 ms should be enough
777 * to decide if we are getting more data or not.
779 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20));
780 return PSMOUSE_GOOD_DATA;
783 del_timer(&priv->timer);
785 if (psmouse->packet[6] & 0x80) {
788 * Highest bit is set - that means we either had
789 * complete ALPS packet and this is start of the
790 * next packet or we got garbage.
793 if (((psmouse->packet[3] |
795 psmouse->packet[5]) & 0x80) ||
796 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) {
798 "refusing packet %4ph (suspected interleaved ps/2)\n",
799 psmouse->packet + 3);
800 return PSMOUSE_BAD_DATA;
803 priv->process_packet(psmouse);
805 /* Continue with the next packet */
806 psmouse->packet[0] = psmouse->packet[6];
812 * High bit is 0 - that means that we indeed got a PS/2
813 * packet in the middle of ALPS packet.
815 * There is also possibility that we got 6-byte ALPS
816 * packet followed by 3-byte packet from trackpoint. We
817 * can not distinguish between these 2 scenarios but
818 * because the latter is unlikely to happen in course of
819 * normal operation (user would need to press all
820 * buttons on the pad and start moving trackpoint
821 * without touching the pad surface) we assume former.
822 * Even if we are wrong the wost thing that would happen
823 * the cursor would jump but we should not get protocol
824 * de-synchronization.
827 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3],
831 * Continue with the standard ALPS protocol handling,
832 * but make sure we won't process it as an interleaved
833 * packet again, which may happen if all buttons are
834 * pressed. To avoid this let's reset the 4th bit which
837 psmouse->packet[3] = psmouse->packet[6] & 0xf7;
841 return PSMOUSE_GOOD_DATA;
844 static void alps_flush_packet(unsigned long data)
846 struct psmouse *psmouse = (struct psmouse *)data;
847 struct alps_data *priv = psmouse->private;
849 serio_pause_rx(psmouse->ps2dev.serio);
851 if (psmouse->pktcnt == psmouse->pktsize) {
854 * We did not any more data in reasonable amount of time.
855 * Validate the last 3 bytes and process as a standard
858 if ((psmouse->packet[3] |
860 psmouse->packet[5]) & 0x80) {
862 "refusing packet %3ph (suspected interleaved ps/2)\n",
863 psmouse->packet + 3);
865 priv->process_packet(psmouse);
870 serio_continue_rx(psmouse->ps2dev.serio);
873 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
875 struct alps_data *priv = psmouse->private;
877 if ((psmouse->packet[0] & 0xc8) == 0x08) { /* PS/2 packet */
878 if (psmouse->pktcnt == 3) {
879 alps_report_bare_ps2_packet(psmouse, psmouse->packet,
881 return PSMOUSE_FULL_PACKET;
883 return PSMOUSE_GOOD_DATA;
886 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */
888 if ((priv->flags & ALPS_PS2_INTERLEAVED) &&
889 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) {
890 return alps_handle_interleaved_ps2(psmouse);
893 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) {
895 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n",
896 psmouse->packet[0], priv->mask0, priv->byte0);
897 return PSMOUSE_BAD_DATA;
900 /* Bytes 2 - pktsize should have 0 in the highest bit */
901 if (priv->proto_version != ALPS_PROTO_V5 &&
902 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize &&
903 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) {
904 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
906 psmouse->packet[psmouse->pktcnt - 1]);
907 return PSMOUSE_BAD_DATA;
910 if (psmouse->pktcnt == psmouse->pktsize) {
911 priv->process_packet(psmouse);
912 return PSMOUSE_FULL_PACKET;
915 return PSMOUSE_GOOD_DATA;
918 static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble)
920 struct ps2dev *ps2dev = &psmouse->ps2dev;
921 struct alps_data *priv = psmouse->private;
923 unsigned char *param;
924 unsigned char dummy[4];
926 BUG_ON(nibble > 0xf);
928 command = priv->nibble_commands[nibble].command;
929 param = (command & 0x0f00) ?
930 dummy : (unsigned char *)&priv->nibble_commands[nibble].data;
932 if (ps2_command(ps2dev, param, command))
938 static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr)
940 struct ps2dev *ps2dev = &psmouse->ps2dev;
941 struct alps_data *priv = psmouse->private;
944 if (ps2_command(ps2dev, NULL, priv->addr_command))
947 for (i = 12; i >= 0; i -= 4) {
948 nibble = (addr >> i) & 0xf;
949 if (alps_command_mode_send_nibble(psmouse, nibble))
956 static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
958 struct ps2dev *ps2dev = &psmouse->ps2dev;
959 unsigned char param[4];
961 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
965 * The address being read is returned in the first two bytes
966 * of the result. Check that this address matches the expected
969 if (addr != ((param[0] << 8) | param[1]))
975 static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
977 if (alps_command_mode_set_addr(psmouse, addr))
979 return __alps_command_mode_read_reg(psmouse, addr);
982 static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value)
984 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf))
986 if (alps_command_mode_send_nibble(psmouse, value & 0xf))
991 static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr,
994 if (alps_command_mode_set_addr(psmouse, addr))
996 return __alps_command_mode_write_reg(psmouse, value);
999 static int alps_rpt_cmd(struct psmouse *psmouse, int init_command,
1000 int repeated_command, unsigned char *param)
1002 struct ps2dev *ps2dev = &psmouse->ps2dev;
1005 if (init_command && ps2_command(ps2dev, param, init_command))
1008 if (ps2_command(ps2dev, NULL, repeated_command) ||
1009 ps2_command(ps2dev, NULL, repeated_command) ||
1010 ps2_command(ps2dev, NULL, repeated_command))
1013 param[0] = param[1] = param[2] = 0xff;
1014 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1017 psmouse_dbg(psmouse, "%2.2X report: %3ph\n",
1018 repeated_command, param);
1022 static int alps_enter_command_mode(struct psmouse *psmouse)
1024 unsigned char param[4];
1026 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) {
1027 psmouse_err(psmouse, "failed to enter command mode\n");
1031 if ((param[0] != 0x88 || (param[1] != 0x07 && param[1] != 0x08)) &&
1033 psmouse_dbg(psmouse,
1034 "unknown response while entering command mode\n");
1040 static inline int alps_exit_command_mode(struct psmouse *psmouse)
1042 struct ps2dev *ps2dev = &psmouse->ps2dev;
1043 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM))
1049 * For DualPoint devices select the device that should respond to
1050 * subsequent commands. It looks like glidepad is behind stickpointer,
1051 * I'd thought it would be other way around...
1053 static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable)
1055 struct ps2dev *ps2dev = &psmouse->ps2dev;
1056 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11;
1058 if (ps2_command(ps2dev, NULL, cmd) ||
1059 ps2_command(ps2dev, NULL, cmd) ||
1060 ps2_command(ps2dev, NULL, cmd) ||
1061 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1064 /* we may get 3 more bytes, just ignore them */
1065 ps2_drain(ps2dev, 3, 100);
1070 static int alps_absolute_mode_v1_v2(struct psmouse *psmouse)
1072 struct ps2dev *ps2dev = &psmouse->ps2dev;
1074 /* Try ALPS magic knock - 4 disable before enable */
1075 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1076 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1077 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1078 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1079 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE))
1083 * Switch mouse to poll (remote) mode so motion data will not
1086 return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL);
1089 static int alps_get_status(struct psmouse *psmouse, char *param)
1091 /* Get status: 0xF5 0xF5 0xF5 0xE9 */
1092 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param))
1099 * Turn touchpad tapping on or off. The sequences are:
1100 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable,
1101 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable.
1102 * My guess that 0xE9 (GetInfo) is here as a sync point.
1103 * For models that also have stickpointer (DualPoints) its tapping
1104 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but
1105 * we don't fiddle with it.
1107 static int alps_tap_mode(struct psmouse *psmouse, int enable)
1109 struct ps2dev *ps2dev = &psmouse->ps2dev;
1110 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES;
1111 unsigned char tap_arg = enable ? 0x0A : 0x00;
1112 unsigned char param[4];
1114 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) ||
1115 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1116 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1117 ps2_command(ps2dev, &tap_arg, cmd))
1120 if (alps_get_status(psmouse, param))
1127 * alps_poll() - poll the touchpad for current motion packet.
1130 static int alps_poll(struct psmouse *psmouse)
1132 struct alps_data *priv = psmouse->private;
1133 unsigned char buf[sizeof(psmouse->packet)];
1136 if (priv->flags & ALPS_PASS)
1137 alps_passthrough_mode_v2(psmouse, true);
1139 poll_failed = ps2_command(&psmouse->ps2dev, buf,
1140 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0;
1142 if (priv->flags & ALPS_PASS)
1143 alps_passthrough_mode_v2(psmouse, false);
1145 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0)
1148 if ((psmouse->badbyte & 0xc8) == 0x08) {
1150 * Poll the track stick ...
1152 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8)))
1156 memcpy(psmouse->packet, buf, sizeof(buf));
1160 static int alps_hw_init_v1_v2(struct psmouse *psmouse)
1162 struct alps_data *priv = psmouse->private;
1164 if ((priv->flags & ALPS_PASS) &&
1165 alps_passthrough_mode_v2(psmouse, true)) {
1169 if (alps_tap_mode(psmouse, true)) {
1170 psmouse_warn(psmouse, "Failed to enable hardware tapping\n");
1174 if (alps_absolute_mode_v1_v2(psmouse)) {
1175 psmouse_err(psmouse, "Failed to enable absolute mode\n");
1179 if ((priv->flags & ALPS_PASS) &&
1180 alps_passthrough_mode_v2(psmouse, false)) {
1184 /* ALPS needs stream mode, otherwise it won't report any data */
1185 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) {
1186 psmouse_err(psmouse, "Failed to enable stream mode\n");
1194 * Enable or disable passthrough mode to the trackstick.
1196 static int alps_passthrough_mode_v3(struct psmouse *psmouse,
1197 int reg_base, bool enable)
1199 int reg_val, ret = -1;
1201 if (alps_enter_command_mode(psmouse))
1204 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008);
1213 ret = __alps_command_mode_write_reg(psmouse, reg_val);
1216 if (alps_exit_command_mode(psmouse))
1221 /* Must be in command mode when calling this function */
1222 static int alps_absolute_mode_v3(struct psmouse *psmouse)
1226 reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
1231 if (__alps_command_mode_write_reg(psmouse, reg_val))
1237 static int alps_probe_trackstick_v3(struct psmouse *psmouse, int reg_base)
1239 int ret = -EIO, reg_val;
1241 if (alps_enter_command_mode(psmouse))
1244 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08);
1248 /* bit 7: trackstick is present */
1249 ret = reg_val & 0x80 ? 0 : -ENODEV;
1252 alps_exit_command_mode(psmouse);
1256 static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base)
1258 struct ps2dev *ps2dev = &psmouse->ps2dev;
1260 unsigned char param[4];
1262 if (alps_passthrough_mode_v3(psmouse, reg_base, true))
1266 * E7 report for the trackstick
1268 * There have been reports of failures to seem to trace back
1269 * to the above trackstick check failing. When these occur
1270 * this E7 report fails, so when that happens we continue
1271 * with the assumption that there isn't a trackstick after
1274 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) {
1275 psmouse_warn(psmouse, "trackstick E7 report failed\n");
1278 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param);
1281 * Not sure what this does, but it is absolutely
1282 * essential. Without it, the touchpad does not
1283 * work at all and the trackstick just emits normal
1286 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1287 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1288 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1289 alps_command_mode_send_nibble(psmouse, 0x9) ||
1290 alps_command_mode_send_nibble(psmouse, 0x4)) {
1291 psmouse_err(psmouse,
1292 "Error sending magic E6 sequence\n");
1298 * This ensures the trackstick packets are in the format
1299 * supported by this driver. If bit 1 isn't set the packet
1300 * format is different.
1302 if (alps_enter_command_mode(psmouse) ||
1303 alps_command_mode_write_reg(psmouse,
1304 reg_base + 0x08, 0x82) ||
1305 alps_exit_command_mode(psmouse))
1310 if (alps_passthrough_mode_v3(psmouse, reg_base, false))
1316 static int alps_hw_init_v3(struct psmouse *psmouse)
1318 struct ps2dev *ps2dev = &psmouse->ps2dev;
1320 unsigned char param[4];
1322 reg_val = alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE);
1323 if (reg_val == -EIO)
1327 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO)
1330 if (alps_enter_command_mode(psmouse) ||
1331 alps_absolute_mode_v3(psmouse)) {
1332 psmouse_err(psmouse, "Failed to enter absolute mode\n");
1336 reg_val = alps_command_mode_read_reg(psmouse, 0x0006);
1339 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
1342 reg_val = alps_command_mode_read_reg(psmouse, 0x0007);
1345 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
1348 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1)
1350 if (__alps_command_mode_write_reg(psmouse, 0x04))
1353 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1)
1355 if (__alps_command_mode_write_reg(psmouse, 0x03))
1358 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1)
1360 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03))
1363 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1)
1365 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04))
1368 alps_exit_command_mode(psmouse);
1370 /* Set rate and enable data reporting */
1372 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
1373 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
1374 psmouse_err(psmouse, "Failed to enable data reporting\n");
1382 * Leaving the touchpad in command mode will essentially render
1383 * it unusable until the machine reboots, so exit it here just
1386 alps_exit_command_mode(psmouse);
1390 static int alps_hw_init_rushmore_v3(struct psmouse *psmouse)
1392 struct alps_data *priv = psmouse->private;
1393 struct ps2dev *ps2dev = &psmouse->ps2dev;
1394 int reg_val, ret = -1;
1396 if (priv->flags & ALPS_DUALPOINT) {
1397 reg_val = alps_setup_trackstick_v3(psmouse,
1398 ALPS_REG_BASE_RUSHMORE);
1399 if (reg_val == -EIO)
1401 if (reg_val == -ENODEV)
1402 priv->flags &= ~ALPS_DUALPOINT;
1405 if (alps_enter_command_mode(psmouse) ||
1406 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 ||
1407 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00))
1410 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6);
1413 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd))
1416 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64))
1419 /* enter absolute mode */
1420 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4);
1423 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02))
1426 alps_exit_command_mode(psmouse);
1427 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
1430 alps_exit_command_mode(psmouse);
1434 /* Must be in command mode when calling this function */
1435 static int alps_absolute_mode_v4(struct psmouse *psmouse)
1439 reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
1444 if (__alps_command_mode_write_reg(psmouse, reg_val))
1450 static int alps_hw_init_v4(struct psmouse *psmouse)
1452 struct ps2dev *ps2dev = &psmouse->ps2dev;
1453 unsigned char param[4];
1455 if (alps_enter_command_mode(psmouse))
1458 if (alps_absolute_mode_v4(psmouse)) {
1459 psmouse_err(psmouse, "Failed to enter absolute mode\n");
1463 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c))
1466 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03))
1469 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03))
1472 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15))
1475 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01))
1478 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03))
1481 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03))
1484 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03))
1487 alps_exit_command_mode(psmouse);
1490 * This sequence changes the output from a 9-byte to an
1491 * 8-byte format. All the same data seems to be present,
1492 * just in a more compact format.
1497 if (ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) ||
1498 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE) ||
1499 ps2_command(ps2dev, ¶m[2], PSMOUSE_CMD_SETRATE) ||
1500 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID))
1503 /* Set rate and enable data reporting */
1505 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
1506 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
1507 psmouse_err(psmouse, "Failed to enable data reporting\n");
1515 * Leaving the touchpad in command mode will essentially render
1516 * it unusable until the machine reboots, so exit it here just
1519 alps_exit_command_mode(psmouse);
1523 static int alps_hw_init_dolphin_v1(struct psmouse *psmouse)
1525 struct ps2dev *ps2dev = &psmouse->ps2dev;
1526 unsigned char param[2];
1528 /* This is dolphin "v1" as empirically defined by florin9doi */
1532 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
1533 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) ||
1534 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE))
1540 static void alps_set_defaults(struct alps_data *priv)
1544 priv->flags = ALPS_DUALPOINT;
1551 switch (priv->proto_version) {
1554 priv->hw_init = alps_hw_init_v1_v2;
1555 priv->process_packet = alps_process_packet_v1_v2;
1556 priv->set_abs_params = alps_set_abs_params_st;
1559 priv->hw_init = alps_hw_init_v3;
1560 priv->process_packet = alps_process_packet_v3;
1561 priv->set_abs_params = alps_set_abs_params_mt;
1562 priv->decode_fields = alps_decode_pinnacle;
1563 priv->nibble_commands = alps_v3_nibble_commands;
1564 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
1567 priv->hw_init = alps_hw_init_v4;
1568 priv->process_packet = alps_process_packet_v4;
1569 priv->set_abs_params = alps_set_abs_params_mt;
1570 priv->nibble_commands = alps_v4_nibble_commands;
1571 priv->addr_command = PSMOUSE_CMD_DISABLE;
1574 priv->hw_init = alps_hw_init_dolphin_v1;
1575 priv->process_packet = alps_process_packet_v3;
1576 priv->decode_fields = alps_decode_dolphin;
1577 priv->set_abs_params = alps_set_abs_params_mt;
1578 priv->nibble_commands = alps_v3_nibble_commands;
1579 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
1591 static int alps_match_table(struct psmouse *psmouse, struct alps_data *priv,
1592 unsigned char *e7, unsigned char *ec)
1594 const struct alps_model_info *model;
1597 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) {
1598 model = &alps_model_data[i];
1600 if (!memcmp(e7, model->signature, sizeof(model->signature)) &&
1601 (!model->command_mode_resp ||
1602 model->command_mode_resp == ec[2])) {
1604 priv->proto_version = model->proto_version;
1605 alps_set_defaults(priv);
1607 priv->flags = model->flags;
1608 priv->byte0 = model->byte0;
1609 priv->mask0 = model->mask0;
1618 static int alps_identify(struct psmouse *psmouse, struct alps_data *priv)
1620 unsigned char e6[4], e7[4], ec[4];
1623 * First try "E6 report".
1624 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed.
1625 * The bits 0-2 of the first byte will be 1s if some buttons are
1628 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
1629 PSMOUSE_CMD_SETSCALE11, e6))
1632 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100))
1636 * Now get the "E7" and "EC" reports. These will uniquely identify
1637 * most ALPS touchpads.
1639 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
1640 PSMOUSE_CMD_SETSCALE21, e7) ||
1641 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
1642 PSMOUSE_CMD_RESET_WRAP, ec) ||
1643 alps_exit_command_mode(psmouse))
1646 if (alps_match_table(psmouse, priv, e7, ec) == 0) {
1648 } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 &&
1649 ec[0] == 0x73 && ec[1] == 0x01) {
1650 priv->proto_version = ALPS_PROTO_V5;
1651 alps_set_defaults(priv);
1654 } else if (ec[0] == 0x88 && ec[1] == 0x08) {
1655 priv->proto_version = ALPS_PROTO_V3;
1656 alps_set_defaults(priv);
1658 priv->hw_init = alps_hw_init_rushmore_v3;
1659 priv->decode_fields = alps_decode_rushmore;
1663 /* hack to make addr_command, nibble_command available */
1664 psmouse->private = priv;
1666 if (alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_RUSHMORE))
1667 priv->flags &= ~ALPS_DUALPOINT;
1670 } else if (ec[0] == 0x88 && ec[1] == 0x07 &&
1671 ec[2] >= 0x90 && ec[2] <= 0x9d) {
1672 priv->proto_version = ALPS_PROTO_V3;
1673 alps_set_defaults(priv);
1678 psmouse_info(psmouse,
1679 "Unknown ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec);
1684 static int alps_reconnect(struct psmouse *psmouse)
1686 struct alps_data *priv = psmouse->private;
1688 psmouse_reset(psmouse);
1690 if (alps_identify(psmouse, priv) < 0)
1693 return priv->hw_init(psmouse);
1696 static void alps_disconnect(struct psmouse *psmouse)
1698 struct alps_data *priv = psmouse->private;
1700 psmouse_reset(psmouse);
1701 del_timer_sync(&priv->timer);
1702 input_unregister_device(priv->dev2);
1706 static void alps_set_abs_params_st(struct alps_data *priv,
1707 struct input_dev *dev1)
1709 input_set_abs_params(dev1, ABS_X, 0, 1023, 0, 0);
1710 input_set_abs_params(dev1, ABS_Y, 0, 767, 0, 0);
1713 static void alps_set_abs_params_mt(struct alps_data *priv,
1714 struct input_dev *dev1)
1716 set_bit(INPUT_PROP_SEMI_MT, dev1->propbit);
1717 input_mt_init_slots(dev1, 2, 0);
1718 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0);
1719 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0);
1721 set_bit(BTN_TOOL_DOUBLETAP, dev1->keybit);
1722 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit);
1723 set_bit(BTN_TOOL_QUADTAP, dev1->keybit);
1725 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0);
1726 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0);
1729 int alps_init(struct psmouse *psmouse)
1731 struct alps_data *priv;
1732 struct input_dev *dev1 = psmouse->dev, *dev2;
1734 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL);
1735 dev2 = input_allocate_device();
1740 setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse);
1742 psmouse->private = priv;
1744 psmouse_reset(psmouse);
1746 if (alps_identify(psmouse, priv) < 0)
1749 if (priv->hw_init(psmouse))
1753 * Undo part of setup done for us by psmouse core since touchpad
1754 * is not a relative device.
1756 __clear_bit(EV_REL, dev1->evbit);
1757 __clear_bit(REL_X, dev1->relbit);
1758 __clear_bit(REL_Y, dev1->relbit);
1761 * Now set up our capabilities.
1763 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY);
1764 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH);
1765 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER);
1766 dev1->keybit[BIT_WORD(BTN_LEFT)] |=
1767 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
1769 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS);
1771 priv->set_abs_params(priv, dev1);
1772 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
1774 if (priv->flags & ALPS_WHEEL) {
1775 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL);
1776 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL);
1779 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
1780 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD);
1781 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK);
1784 if (priv->flags & ALPS_FOUR_BUTTONS) {
1785 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0);
1786 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1);
1787 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2);
1788 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3);
1790 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE);
1793 snprintf(priv->phys, sizeof(priv->phys), "%s/input1", psmouse->ps2dev.serio->phys);
1794 dev2->phys = priv->phys;
1795 dev2->name = (priv->flags & ALPS_DUALPOINT) ?
1796 "DualPoint Stick" : "PS/2 Mouse";
1797 dev2->id.bustype = BUS_I8042;
1798 dev2->id.vendor = 0x0002;
1799 dev2->id.product = PSMOUSE_ALPS;
1800 dev2->id.version = 0x0000;
1801 dev2->dev.parent = &psmouse->ps2dev.serio->dev;
1803 dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
1804 dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
1805 dev2->keybit[BIT_WORD(BTN_LEFT)] =
1806 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
1808 if (input_register_device(priv->dev2))
1811 psmouse->protocol_handler = alps_process_byte;
1812 psmouse->poll = alps_poll;
1813 psmouse->disconnect = alps_disconnect;
1814 psmouse->reconnect = alps_reconnect;
1815 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6;
1817 /* We are having trouble resyncing ALPS touchpads so disable it for now */
1818 psmouse->resync_time = 0;
1823 psmouse_reset(psmouse);
1824 input_free_device(dev2);
1826 psmouse->private = NULL;
1830 int alps_detect(struct psmouse *psmouse, bool set_properties)
1832 struct alps_data dummy;
1834 if (alps_identify(psmouse, &dummy) < 0)
1837 if (set_properties) {
1838 psmouse->vendor = "ALPS";
1839 psmouse->name = dummy.flags & ALPS_DUALPOINT ?
1840 "DualPoint TouchPad" : "GlidePoint";
1841 psmouse->model = dummy.proto_version << 8;