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_BUTTONPAD 0x200 /* device is a clickpad */
104 static const struct alps_model_info alps_model_data[] = {
105 { { 0x32, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Toshiba Salellite Pro M10 */
106 { { 0x33, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V1, 0x88, 0xf8, 0 } }, /* UMAX-530T */
107 { { 0x53, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
108 { { 0x53, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
109 { { 0x60, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, /* HP ze1115 */
110 { { 0x63, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
111 { { 0x63, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
112 { { 0x63, 0x02, 0x28 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Fujitsu Siemens S6010 */
113 { { 0x63, 0x02, 0x3c }, 0x00, { ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL } }, /* Toshiba Satellite S2400-103 */
114 { { 0x63, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 } }, /* NEC Versa L320 */
115 { { 0x63, 0x02, 0x64 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
116 { { 0x63, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D800 */
117 { { 0x73, 0x00, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT } }, /* ThinkPad R61 8918-5QG */
118 { { 0x73, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
119 { { 0x73, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Ahtec Laptop */
122 * XXX This entry is suspicious. First byte has zero lower nibble,
123 * which is what a normal mouse would report. Also, the value 0x0e
124 * isn't valid per PS/2 spec.
126 { { 0x20, 0x02, 0x0e }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } },
128 { { 0x22, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } },
129 { { 0x22, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D600 */
130 /* Dell Latitude E5500, E6400, E6500, Precision M4400 */
131 { { 0x62, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf,
132 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } },
133 { { 0x73, 0x00, 0x14 }, 0x00, { ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT } }, /* Dell XT2 */
134 { { 0x73, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS } }, /* Dell Vostro 1400 */
135 { { 0x52, 0x01, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff,
136 ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, /* Toshiba Tecra A11-11L */
137 { { 0x73, 0x02, 0x64 }, 0x8a, { ALPS_PROTO_V4, 0x8f, 0x8f, 0 } },
140 static const struct alps_protocol_info alps_v3_protocol_data = {
141 ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT
144 static const struct alps_protocol_info alps_v3_rushmore_data = {
145 ALPS_PROTO_V3_RUSHMORE, 0x8f, 0x8f, ALPS_DUALPOINT
148 static const struct alps_protocol_info alps_v5_protocol_data = {
149 ALPS_PROTO_V5, 0xc8, 0xd8, 0
152 static const struct alps_protocol_info alps_v7_protocol_data = {
153 ALPS_PROTO_V7, 0x48, 0x48, ALPS_DUALPOINT
156 static const struct alps_protocol_info alps_v8_protocol_data = {
157 ALPS_PROTO_V8, 0x18, 0x18, 0
160 static void alps_set_abs_params_st(struct alps_data *priv,
161 struct input_dev *dev1);
162 static void alps_set_abs_params_mt(struct alps_data *priv,
163 struct input_dev *dev1);
164 static void alps_set_abs_params_v7(struct alps_data *priv,
165 struct input_dev *dev1);
166 static void alps_set_abs_params_ss4_v2(struct alps_data *priv,
167 struct input_dev *dev1);
169 /* Packet formats are described in Documentation/input/alps.txt */
171 static bool alps_is_valid_first_byte(struct alps_data *priv,
174 return (data & priv->mask0) == priv->byte0;
177 static void alps_report_buttons(struct input_dev *dev1, struct input_dev *dev2,
178 int left, int right, int middle)
180 struct input_dev *dev;
183 * If shared button has already been reported on the
184 * other device (dev2) then this event should be also
185 * sent through that device.
187 dev = (dev2 && test_bit(BTN_LEFT, dev2->key)) ? dev2 : dev1;
188 input_report_key(dev, BTN_LEFT, left);
190 dev = (dev2 && test_bit(BTN_RIGHT, dev2->key)) ? dev2 : dev1;
191 input_report_key(dev, BTN_RIGHT, right);
193 dev = (dev2 && test_bit(BTN_MIDDLE, dev2->key)) ? dev2 : dev1;
194 input_report_key(dev, BTN_MIDDLE, middle);
197 * Sync the _other_ device now, we'll do the first
198 * device later once we report the rest of the events.
204 static void alps_process_packet_v1_v2(struct psmouse *psmouse)
206 struct alps_data *priv = psmouse->private;
207 unsigned char *packet = psmouse->packet;
208 struct input_dev *dev = psmouse->dev;
209 struct input_dev *dev2 = priv->dev2;
210 int x, y, z, ges, fin, left, right, middle;
211 int back = 0, forward = 0;
213 if (priv->proto_version == ALPS_PROTO_V1) {
214 left = packet[2] & 0x10;
215 right = packet[2] & 0x08;
217 x = packet[1] | ((packet[0] & 0x07) << 7);
218 y = packet[4] | ((packet[3] & 0x07) << 7);
221 left = packet[3] & 1;
222 right = packet[3] & 2;
223 middle = packet[3] & 4;
224 x = packet[1] | ((packet[2] & 0x78) << (7 - 3));
225 y = packet[4] | ((packet[3] & 0x70) << (7 - 4));
229 if (priv->flags & ALPS_FW_BK_1) {
230 back = packet[0] & 0x10;
231 forward = packet[2] & 4;
234 if (priv->flags & ALPS_FW_BK_2) {
235 back = packet[3] & 4;
236 forward = packet[2] & 4;
237 if ((middle = forward && back))
244 if ((priv->flags & ALPS_DUALPOINT) && z == 127) {
245 input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x));
246 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y));
248 alps_report_buttons(dev2, dev, left, right, middle);
254 /* Non interleaved V2 dualpoint has separate stick button bits */
255 if (priv->proto_version == ALPS_PROTO_V2 &&
256 priv->flags == (ALPS_PASS | ALPS_DUALPOINT)) {
257 left |= packet[0] & 1;
258 right |= packet[0] & 2;
259 middle |= packet[0] & 4;
262 alps_report_buttons(dev, dev2, left, right, middle);
264 /* Convert hardware tap to a reasonable Z value */
269 * A "tap and drag" operation is reported by the hardware as a transition
270 * from (!fin && ges) to (fin && ges). This should be translated to the
271 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually.
273 if (ges && fin && !priv->prev_fin) {
274 input_report_abs(dev, ABS_X, x);
275 input_report_abs(dev, ABS_Y, y);
276 input_report_abs(dev, ABS_PRESSURE, 0);
277 input_report_key(dev, BTN_TOOL_FINGER, 0);
280 priv->prev_fin = fin;
283 input_report_key(dev, BTN_TOUCH, 1);
285 input_report_key(dev, BTN_TOUCH, 0);
288 input_report_abs(dev, ABS_X, x);
289 input_report_abs(dev, ABS_Y, y);
292 input_report_abs(dev, ABS_PRESSURE, z);
293 input_report_key(dev, BTN_TOOL_FINGER, z > 0);
295 if (priv->flags & ALPS_WHEEL)
296 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07));
298 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
299 input_report_key(dev, BTN_FORWARD, forward);
300 input_report_key(dev, BTN_BACK, back);
303 if (priv->flags & ALPS_FOUR_BUTTONS) {
304 input_report_key(dev, BTN_0, packet[2] & 4);
305 input_report_key(dev, BTN_1, packet[0] & 0x10);
306 input_report_key(dev, BTN_2, packet[3] & 4);
307 input_report_key(dev, BTN_3, packet[0] & 0x20);
314 * Process bitmap data for V5 protocols. Return value is null.
316 * The bitmaps don't have enough data to track fingers, so this function
317 * only generates points representing a bounding box of at most two contacts.
318 * These two points are returned in fields->mt.
320 static void alps_process_bitmap_dolphin(struct alps_data *priv,
321 struct alps_fields *fields)
323 int box_middle_x, box_middle_y;
324 unsigned int x_map, y_map;
325 unsigned char start_bit, end_bit;
326 unsigned char x_msb, x_lsb, y_msb, y_lsb;
328 x_map = fields->x_map;
329 y_map = fields->y_map;
331 if (!x_map || !y_map)
334 /* Get Most-significant and Least-significant bit */
340 /* Most-significant bit should never exceed max sensor line number */
341 if (x_msb > priv->x_bits || y_msb > priv->y_bits)
344 if (fields->fingers > 1) {
345 start_bit = priv->x_bits - x_msb;
346 end_bit = priv->x_bits - x_lsb;
347 box_middle_x = (priv->x_max * (start_bit + end_bit)) /
348 (2 * (priv->x_bits - 1));
350 start_bit = y_lsb - 1;
352 box_middle_y = (priv->y_max * (start_bit + end_bit)) /
353 (2 * (priv->y_bits - 1));
354 fields->mt[0] = fields->st;
355 fields->mt[1].x = 2 * box_middle_x - fields->mt[0].x;
356 fields->mt[1].y = 2 * box_middle_y - fields->mt[0].y;
360 static void alps_get_bitmap_points(unsigned int map,
361 struct alps_bitmap_point *low,
362 struct alps_bitmap_point *high,
365 struct alps_bitmap_point *point;
366 int i, bit, prev_bit = 0;
369 for (i = 0; map != 0; i++, map >>= 1) {
373 point->start_bit = i;
387 * Process bitmap data from v3 and v4 protocols. Returns the number of
388 * fingers detected. A return value of 0 means at least one of the
391 * The bitmaps don't have enough data to track fingers, so this function
392 * only generates points representing a bounding box of all contacts.
393 * These points are returned in fields->mt when the return value
396 static int alps_process_bitmap(struct alps_data *priv,
397 struct alps_fields *fields)
399 int i, fingers_x = 0, fingers_y = 0, fingers;
400 struct alps_bitmap_point x_low = {0,}, x_high = {0,};
401 struct alps_bitmap_point y_low = {0,}, y_high = {0,};
403 if (!fields->x_map || !fields->y_map)
406 alps_get_bitmap_points(fields->x_map, &x_low, &x_high, &fingers_x);
407 alps_get_bitmap_points(fields->y_map, &y_low, &y_high, &fingers_y);
410 * Fingers can overlap, so we use the maximum count of fingers
411 * on either axis as the finger count.
413 fingers = max(fingers_x, fingers_y);
416 * If an axis reports only a single contact, we have overlapping or
417 * adjacent fingers. Divide the single contact between the two points.
419 if (fingers_x == 1) {
420 i = (x_low.num_bits - 1) / 2;
421 x_low.num_bits = x_low.num_bits - i;
422 x_high.start_bit = x_low.start_bit + i;
423 x_high.num_bits = max(i, 1);
425 if (fingers_y == 1) {
426 i = (y_low.num_bits - 1) / 2;
427 y_low.num_bits = y_low.num_bits - i;
428 y_high.start_bit = y_low.start_bit + i;
429 y_high.num_bits = max(i, 1);
433 (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) /
434 (2 * (priv->x_bits - 1));
436 (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) /
437 (2 * (priv->y_bits - 1));
440 (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) /
441 (2 * (priv->x_bits - 1));
443 (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) /
444 (2 * (priv->y_bits - 1));
446 /* y-bitmap order is reversed, except on rushmore */
447 if (priv->proto_version != ALPS_PROTO_V3_RUSHMORE) {
448 fields->mt[0].y = priv->y_max - fields->mt[0].y;
449 fields->mt[1].y = priv->y_max - fields->mt[1].y;
455 static void alps_set_slot(struct input_dev *dev, int slot, int x, int y)
457 input_mt_slot(dev, slot);
458 input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
459 input_report_abs(dev, ABS_MT_POSITION_X, x);
460 input_report_abs(dev, ABS_MT_POSITION_Y, y);
463 static void alps_report_mt_data(struct psmouse *psmouse, int n)
465 struct alps_data *priv = psmouse->private;
466 struct input_dev *dev = psmouse->dev;
467 struct alps_fields *f = &priv->f;
468 int i, slot[MAX_TOUCHES];
470 input_mt_assign_slots(dev, slot, f->mt, n, 0);
471 for (i = 0; i < n; i++)
472 alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y);
474 input_mt_sync_frame(dev);
477 static void alps_report_semi_mt_data(struct psmouse *psmouse, int fingers)
479 struct alps_data *priv = psmouse->private;
480 struct input_dev *dev = psmouse->dev;
481 struct alps_fields *f = &priv->f;
483 /* Use st data when we don't have mt data */
485 f->mt[0].x = f->st.x;
486 f->mt[0].y = f->st.y;
487 fingers = f->pressure > 0 ? 1 : 0;
490 alps_report_mt_data(psmouse, (fingers <= 2) ? fingers : 2);
492 input_mt_report_finger_count(dev, fingers);
494 input_report_key(dev, BTN_LEFT, f->left);
495 input_report_key(dev, BTN_RIGHT, f->right);
496 input_report_key(dev, BTN_MIDDLE, f->middle);
498 input_report_abs(dev, ABS_PRESSURE, f->pressure);
503 static void alps_process_trackstick_packet_v3(struct psmouse *psmouse)
505 struct alps_data *priv = psmouse->private;
506 unsigned char *packet = psmouse->packet;
507 struct input_dev *dev = priv->dev2;
508 int x, y, z, left, right, middle;
510 /* It should be a DualPoint when received trackstick packet */
511 if (!(priv->flags & ALPS_DUALPOINT)) {
512 psmouse_warn(psmouse,
513 "Rejected trackstick packet from non DualPoint device");
517 /* Sanity check packet */
518 if (!(packet[0] & 0x40)) {
519 psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n");
524 * There's a special packet that seems to indicate the end
525 * of a stream of trackstick data. Filter these out.
527 if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f)
530 x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f));
531 y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f));
532 z = (packet[4] & 0x7c) >> 2;
535 * The x and y values tend to be quite large, and when used
536 * alone the trackstick is difficult to use. Scale them down
542 input_report_rel(dev, REL_X, x);
543 input_report_rel(dev, REL_Y, -y);
546 * Most ALPS models report the trackstick buttons in the touchpad
547 * packets, but a few report them here. No reliable way has been
548 * found to differentiate between the models upfront, so we enable
549 * the quirk in response to seeing a button press in the trackstick
552 left = packet[3] & 0x01;
553 right = packet[3] & 0x02;
554 middle = packet[3] & 0x04;
556 if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) &&
557 (left || right || middle))
558 priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS;
560 if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) {
561 input_report_key(dev, BTN_LEFT, left);
562 input_report_key(dev, BTN_RIGHT, right);
563 input_report_key(dev, BTN_MIDDLE, middle);
570 static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p)
572 f->left = !!(p[3] & 0x01);
573 f->right = !!(p[3] & 0x02);
574 f->middle = !!(p[3] & 0x04);
576 f->ts_left = !!(p[3] & 0x10);
577 f->ts_right = !!(p[3] & 0x20);
578 f->ts_middle = !!(p[3] & 0x40);
581 static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p,
582 struct psmouse *psmouse)
584 f->first_mp = !!(p[4] & 0x40);
585 f->is_mp = !!(p[0] & 0x40);
587 f->fingers = (p[5] & 0x3) + 1;
588 f->x_map = ((p[4] & 0x7e) << 8) |
589 ((p[1] & 0x7f) << 2) |
590 ((p[0] & 0x30) >> 4);
591 f->y_map = ((p[3] & 0x70) << 4) |
592 ((p[2] & 0x7f) << 1) |
595 f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) |
596 ((p[0] & 0x30) >> 4);
597 f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f);
598 f->pressure = p[5] & 0x7f;
600 alps_decode_buttons_v3(f, p);
605 static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p,
606 struct psmouse *psmouse)
608 alps_decode_pinnacle(f, p, psmouse);
610 /* Rushmore's packet decode has a bit difference with Pinnacle's */
611 f->is_mp = !!(p[5] & 0x40);
612 f->fingers = max((p[5] & 0x3), ((p[5] >> 2) & 0x3)) + 1;
613 f->x_map |= (p[5] & 0x10) << 11;
614 f->y_map |= (p[5] & 0x20) << 6;
619 static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p,
620 struct psmouse *psmouse)
623 struct alps_data *priv = psmouse->private;
625 f->first_mp = !!(p[0] & 0x02);
626 f->is_mp = !!(p[0] & 0x20);
629 f->st.x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7));
630 f->st.y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3));
631 f->pressure = (p[0] & 4) ? 0 : p[5] & 0x7f;
632 alps_decode_buttons_v3(f, p);
634 f->fingers = ((p[0] & 0x6) >> 1 |
637 palm_data = (p[1] & 0x7f) |
638 ((p[2] & 0x7f) << 7) |
639 ((p[4] & 0x7f) << 14) |
640 ((p[5] & 0x7f) << 21) |
641 ((p[3] & 0x07) << 28) |
642 (((u64)p[3] & 0x70) << 27) |
643 (((u64)p[0] & 0x01) << 34);
645 /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */
646 f->y_map = palm_data & (BIT(priv->y_bits) - 1);
648 /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */
649 f->x_map = (palm_data >> priv->y_bits) &
650 (BIT(priv->x_bits) - 1);
656 static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse)
658 struct alps_data *priv = psmouse->private;
659 unsigned char *packet = psmouse->packet;
660 struct input_dev *dev2 = priv->dev2;
661 struct alps_fields *f = &priv->f;
664 memset(f, 0, sizeof(*f));
666 priv->decode_fields(f, packet, psmouse);
669 * There's no single feature of touchpad position and bitmap packets
670 * that can be used to distinguish between them. We rely on the fact
671 * that a bitmap packet should always follow a position packet with
672 * bit 6 of packet[4] set.
674 if (priv->multi_packet) {
676 * Sometimes a position packet will indicate a multi-packet
677 * sequence, but then what follows is another position
678 * packet. Check for this, and when it happens process the
679 * position packet as usual.
682 fingers = f->fingers;
683 if (priv->proto_version == ALPS_PROTO_V3 ||
684 priv->proto_version == ALPS_PROTO_V3_RUSHMORE) {
685 if (alps_process_bitmap(priv, f) == 0)
686 fingers = 0; /* Use st data */
688 /* Now process position packet */
689 priv->decode_fields(f, priv->multi_data,
693 * Because Dolphin uses position packet's
694 * coordinate data as Pt1 and uses it to
695 * calculate Pt2, so we need to do position
696 * packet decode first.
698 priv->decode_fields(f, priv->multi_data,
702 * Since Dolphin's finger number is reliable,
703 * there is no need to compare with bmap_fn.
705 alps_process_bitmap_dolphin(priv, f);
708 priv->multi_packet = 0;
713 * Bit 6 of byte 0 is not usually set in position packets. The only
714 * times it seems to be set is in situations where the data is
715 * suspect anyway, e.g. a palm resting flat on the touchpad. Given
716 * this combined with the fact that this bit is useful for filtering
717 * out misidentified bitmap packets, we reject anything with this
723 if (!priv->multi_packet && f->first_mp) {
724 priv->multi_packet = 1;
725 memcpy(priv->multi_data, packet, sizeof(priv->multi_data));
729 priv->multi_packet = 0;
732 * Sometimes the hardware sends a single packet with z = 0
733 * in the middle of a stream. Real releases generate packets
734 * with x, y, and z all zero, so these seem to be flukes.
737 if (f->st.x && f->st.y && !f->pressure)
740 alps_report_semi_mt_data(psmouse, fingers);
742 if ((priv->flags & ALPS_DUALPOINT) &&
743 !(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) {
744 input_report_key(dev2, BTN_LEFT, f->ts_left);
745 input_report_key(dev2, BTN_RIGHT, f->ts_right);
746 input_report_key(dev2, BTN_MIDDLE, f->ts_middle);
751 static void alps_process_packet_v3(struct psmouse *psmouse)
753 unsigned char *packet = psmouse->packet;
756 * v3 protocol packets come in three types, two representing
757 * touchpad data and one representing trackstick data.
758 * Trackstick packets seem to be distinguished by always
759 * having 0x3f in the last byte. This value has never been
760 * observed in the last byte of either of the other types
763 if (packet[5] == 0x3f) {
764 alps_process_trackstick_packet_v3(psmouse);
768 alps_process_touchpad_packet_v3_v5(psmouse);
771 static void alps_process_packet_v6(struct psmouse *psmouse)
773 struct alps_data *priv = psmouse->private;
774 unsigned char *packet = psmouse->packet;
775 struct input_dev *dev = psmouse->dev;
776 struct input_dev *dev2 = priv->dev2;
777 int x, y, z, left, right, middle;
780 * We can use Byte5 to distinguish if the packet is from Touchpad
785 if (packet[5] == 0x7F) {
786 /* It should be a DualPoint when received Trackpoint packet */
787 if (!(priv->flags & ALPS_DUALPOINT)) {
788 psmouse_warn(psmouse,
789 "Rejected trackstick packet from non DualPoint device");
793 /* Trackpoint packet */
794 x = packet[1] | ((packet[3] & 0x20) << 2);
795 y = packet[2] | ((packet[3] & 0x40) << 1);
797 left = packet[3] & 0x01;
798 right = packet[3] & 0x02;
799 middle = packet[3] & 0x04;
801 /* To prevent the cursor jump when finger lifted */
802 if (x == 0x7F && y == 0x7F && z == 0x7F)
805 /* Divide 4 since trackpoint's speed is too fast */
806 input_report_rel(dev2, REL_X, (char)x / 4);
807 input_report_rel(dev2, REL_Y, -((char)y / 4));
809 input_report_key(dev2, BTN_LEFT, left);
810 input_report_key(dev2, BTN_RIGHT, right);
811 input_report_key(dev2, BTN_MIDDLE, middle);
817 /* Touchpad packet */
818 x = packet[1] | ((packet[3] & 0x78) << 4);
819 y = packet[2] | ((packet[4] & 0x78) << 4);
821 left = packet[3] & 0x01;
822 right = packet[3] & 0x02;
825 input_report_key(dev, BTN_TOUCH, 1);
827 input_report_key(dev, BTN_TOUCH, 0);
830 input_report_abs(dev, ABS_X, x);
831 input_report_abs(dev, ABS_Y, y);
834 input_report_abs(dev, ABS_PRESSURE, z);
835 input_report_key(dev, BTN_TOOL_FINGER, z > 0);
837 /* v6 touchpad does not have middle button */
838 input_report_key(dev, BTN_LEFT, left);
839 input_report_key(dev, BTN_RIGHT, right);
844 static void alps_process_packet_v4(struct psmouse *psmouse)
846 struct alps_data *priv = psmouse->private;
847 unsigned char *packet = psmouse->packet;
848 struct alps_fields *f = &priv->f;
852 * v4 has a 6-byte encoding for bitmap data, but this data is
853 * broken up between 3 normal packets. Use priv->multi_packet to
854 * track our position in the bitmap packet.
856 if (packet[6] & 0x40) {
857 /* sync, reset position */
858 priv->multi_packet = 0;
861 if (WARN_ON_ONCE(priv->multi_packet > 2))
864 offset = 2 * priv->multi_packet;
865 priv->multi_data[offset] = packet[6];
866 priv->multi_data[offset + 1] = packet[7];
868 if (++priv->multi_packet > 2) {
869 priv->multi_packet = 0;
871 f->x_map = ((priv->multi_data[2] & 0x1f) << 10) |
872 ((priv->multi_data[3] & 0x60) << 3) |
873 ((priv->multi_data[0] & 0x3f) << 2) |
874 ((priv->multi_data[1] & 0x60) >> 5);
875 f->y_map = ((priv->multi_data[5] & 0x01) << 10) |
876 ((priv->multi_data[3] & 0x1f) << 5) |
877 (priv->multi_data[1] & 0x1f);
879 f->fingers = alps_process_bitmap(priv, f);
882 f->left = !!(packet[4] & 0x01);
883 f->right = !!(packet[4] & 0x02);
885 f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) |
886 ((packet[0] & 0x30) >> 4);
887 f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f);
888 f->pressure = packet[5] & 0x7f;
890 alps_report_semi_mt_data(psmouse, f->fingers);
893 static bool alps_is_valid_package_v7(struct psmouse *psmouse)
895 switch (psmouse->pktcnt) {
897 return (psmouse->packet[2] & 0x40) == 0x40;
899 return (psmouse->packet[3] & 0x48) == 0x48;
901 return (psmouse->packet[5] & 0x40) == 0x00;
906 static unsigned char alps_get_packet_id_v7(char *byte)
908 unsigned char packet_id;
911 packet_id = V7_PACKET_ID_TWO;
912 else if (byte[4] & 0x01)
913 packet_id = V7_PACKET_ID_MULTI;
914 else if ((byte[0] & 0x10) && !(byte[4] & 0x43))
915 packet_id = V7_PACKET_ID_NEW;
916 else if (byte[1] == 0x00 && byte[4] == 0x00)
917 packet_id = V7_PACKET_ID_IDLE;
919 packet_id = V7_PACKET_ID_UNKNOWN;
924 static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt,
926 unsigned char pkt_id)
928 mt[0].x = ((pkt[2] & 0x80) << 4);
929 mt[0].x |= ((pkt[2] & 0x3F) << 5);
930 mt[0].x |= ((pkt[3] & 0x30) >> 1);
931 mt[0].x |= (pkt[3] & 0x07);
932 mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07);
934 mt[1].x = ((pkt[3] & 0x80) << 4);
935 mt[1].x |= ((pkt[4] & 0x80) << 3);
936 mt[1].x |= ((pkt[4] & 0x3F) << 4);
937 mt[1].y = ((pkt[5] & 0x80) << 3);
938 mt[1].y |= ((pkt[5] & 0x3F) << 4);
941 case V7_PACKET_ID_TWO:
944 /* Detect false-postive touches where x & y report max value */
945 if (mt[1].y == 0x7ff && mt[1].x == 0xff0) {
947 /* y gets set to 0 at the end of this function */
951 case V7_PACKET_ID_MULTI:
954 mt[1].y |= ((pkt[4] & 0x02) << 4);
958 case V7_PACKET_ID_NEW:
960 mt[1].x |= (pkt[0] & 0x20);
965 mt[0].y = 0x7FF - mt[0].y;
966 mt[1].y = 0x7FF - mt[1].y;
969 static int alps_get_mt_count(struct input_mt_pos *mt)
973 for (i = 0; i < MAX_TOUCHES; i++) {
974 if (mt[i].x != 0 || mt[i].y != 0)
981 static int alps_decode_packet_v7(struct alps_fields *f,
983 struct psmouse *psmouse)
985 struct alps_data *priv = psmouse->private;
986 unsigned char pkt_id;
988 pkt_id = alps_get_packet_id_v7(p);
989 if (pkt_id == V7_PACKET_ID_IDLE)
991 if (pkt_id == V7_PACKET_ID_UNKNOWN)
994 * NEW packets are send to indicate a discontinuity in the finger
995 * coordinate reporting. Specifically a finger may have moved from
996 * slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for
999 * NEW packets have 3 problems:
1000 * 1) They do not contain middle / right button info (on non clickpads)
1001 * this can be worked around by preserving the old button state
1002 * 2) They do not contain an accurate fingercount, and they are
1003 * typically send when the number of fingers changes. We cannot use
1004 * the old finger count as that may mismatch with the amount of
1005 * touch coordinates we've available in the NEW packet
1006 * 3) Their x data for the second touch is inaccurate leading to
1007 * a possible jump of the x coordinate by 16 units when the first
1008 * non NEW packet comes in
1009 * Since problems 2 & 3 cannot be worked around, just ignore them.
1011 if (pkt_id == V7_PACKET_ID_NEW)
1014 alps_get_finger_coordinate_v7(f->mt, p, pkt_id);
1016 if (pkt_id == V7_PACKET_ID_TWO)
1017 f->fingers = alps_get_mt_count(f->mt);
1018 else /* pkt_id == V7_PACKET_ID_MULTI */
1019 f->fingers = 3 + (p[5] & 0x03);
1021 f->left = (p[0] & 0x80) >> 7;
1022 if (priv->flags & ALPS_BUTTONPAD) {
1028 f->right = (p[0] & 0x20) >> 5;
1029 f->middle = (p[0] & 0x10) >> 4;
1032 /* Sometimes a single touch is reported in mt[1] rather then mt[0] */
1033 if (f->fingers == 1 && f->mt[0].x == 0 && f->mt[0].y == 0) {
1034 f->mt[0].x = f->mt[1].x;
1035 f->mt[0].y = f->mt[1].y;
1043 static void alps_process_trackstick_packet_v7(struct psmouse *psmouse)
1045 struct alps_data *priv = psmouse->private;
1046 unsigned char *packet = psmouse->packet;
1047 struct input_dev *dev2 = priv->dev2;
1048 int x, y, z, left, right, middle;
1050 /* It should be a DualPoint when received trackstick packet */
1051 if (!(priv->flags & ALPS_DUALPOINT)) {
1052 psmouse_warn(psmouse,
1053 "Rejected trackstick packet from non DualPoint device");
1057 x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2);
1058 y = (packet[3] & 0x07) | (packet[4] & 0xb8) |
1059 ((packet[3] & 0x20) << 1);
1060 z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1);
1062 left = (packet[1] & 0x01);
1063 right = (packet[1] & 0x02) >> 1;
1064 middle = (packet[1] & 0x04) >> 2;
1066 input_report_rel(dev2, REL_X, (char)x);
1067 input_report_rel(dev2, REL_Y, -((char)y));
1069 input_report_key(dev2, BTN_LEFT, left);
1070 input_report_key(dev2, BTN_RIGHT, right);
1071 input_report_key(dev2, BTN_MIDDLE, middle);
1076 static void alps_process_touchpad_packet_v7(struct psmouse *psmouse)
1078 struct alps_data *priv = psmouse->private;
1079 struct input_dev *dev = psmouse->dev;
1080 struct alps_fields *f = &priv->f;
1082 memset(f, 0, sizeof(*f));
1084 if (priv->decode_fields(f, psmouse->packet, psmouse))
1087 alps_report_mt_data(psmouse, alps_get_mt_count(f->mt));
1089 input_mt_report_finger_count(dev, f->fingers);
1091 input_report_key(dev, BTN_LEFT, f->left);
1092 input_report_key(dev, BTN_RIGHT, f->right);
1093 input_report_key(dev, BTN_MIDDLE, f->middle);
1098 static void alps_process_packet_v7(struct psmouse *psmouse)
1100 unsigned char *packet = psmouse->packet;
1102 if (packet[0] == 0x48 && (packet[4] & 0x47) == 0x06)
1103 alps_process_trackstick_packet_v7(psmouse);
1105 alps_process_touchpad_packet_v7(psmouse);
1108 static unsigned char alps_get_pkt_id_ss4_v2(unsigned char *byte)
1110 unsigned char pkt_id = SS4_PACKET_ID_IDLE;
1112 if (byte[0] == 0x18 && byte[1] == 0x10 && byte[2] == 0x00 &&
1113 (byte[3] & 0x88) == 0x08 && byte[4] == 0x10 && byte[5] == 0x00) {
1114 pkt_id = SS4_PACKET_ID_IDLE;
1115 } else if (!(byte[3] & 0x10)) {
1116 pkt_id = SS4_PACKET_ID_ONE;
1117 } else if (!(byte[3] & 0x20)) {
1118 pkt_id = SS4_PACKET_ID_TWO;
1120 pkt_id = SS4_PACKET_ID_MULTI;
1126 static int alps_decode_ss4_v2(struct alps_fields *f,
1127 unsigned char *p, struct psmouse *psmouse)
1129 struct alps_data *priv = psmouse->private;
1130 unsigned char pkt_id;
1131 unsigned int no_data_x, no_data_y;
1133 pkt_id = alps_get_pkt_id_ss4_v2(p);
1135 /* Current packet is 1Finger coordinate packet */
1137 case SS4_PACKET_ID_ONE:
1138 f->mt[0].x = SS4_1F_X_V2(p);
1139 f->mt[0].y = SS4_1F_Y_V2(p);
1140 f->pressure = ((SS4_1F_Z_V2(p)) * 2) & 0x7f;
1146 case SS4_PACKET_ID_TWO:
1147 if (priv->flags & ALPS_BUTTONPAD) {
1148 f->mt[0].x = SS4_BTL_MF_X_V2(p, 0);
1149 f->mt[0].y = SS4_BTL_MF_Y_V2(p, 0);
1150 f->mt[1].x = SS4_BTL_MF_X_V2(p, 1);
1151 f->mt[1].y = SS4_BTL_MF_Y_V2(p, 1);
1153 f->mt[0].x = SS4_STD_MF_X_V2(p, 0);
1154 f->mt[0].y = SS4_STD_MF_Y_V2(p, 0);
1155 f->mt[1].x = SS4_STD_MF_X_V2(p, 1);
1156 f->mt[1].y = SS4_STD_MF_Y_V2(p, 1);
1158 f->pressure = SS4_MF_Z_V2(p, 0) ? 0x30 : 0;
1160 if (SS4_IS_MF_CONTINUE(p)) {
1170 case SS4_PACKET_ID_MULTI:
1171 if (priv->flags & ALPS_BUTTONPAD) {
1172 f->mt[2].x = SS4_BTL_MF_X_V2(p, 0);
1173 f->mt[2].y = SS4_BTL_MF_Y_V2(p, 0);
1174 f->mt[3].x = SS4_BTL_MF_X_V2(p, 1);
1175 f->mt[3].y = SS4_BTL_MF_Y_V2(p, 1);
1176 no_data_x = SS4_MFPACKET_NO_AX_BL;
1177 no_data_y = SS4_MFPACKET_NO_AY_BL;
1179 f->mt[2].x = SS4_STD_MF_X_V2(p, 0);
1180 f->mt[2].y = SS4_STD_MF_Y_V2(p, 0);
1181 f->mt[3].x = SS4_STD_MF_X_V2(p, 1);
1182 f->mt[3].y = SS4_STD_MF_Y_V2(p, 1);
1183 no_data_x = SS4_MFPACKET_NO_AX;
1184 no_data_y = SS4_MFPACKET_NO_AY;
1190 if (SS4_IS_5F_DETECTED(p)) {
1192 } else if (f->mt[3].x == no_data_x &&
1193 f->mt[3].y == no_data_y) {
1202 case SS4_PACKET_ID_IDLE:
1204 memset(f, 0, sizeof(struct alps_fields));
1208 f->left = !!(SS4_BTN_V2(p) & 0x01);
1209 if (!(priv->flags & ALPS_BUTTONPAD)) {
1210 f->right = !!(SS4_BTN_V2(p) & 0x02);
1211 f->middle = !!(SS4_BTN_V2(p) & 0x04);
1217 static void alps_process_packet_ss4_v2(struct psmouse *psmouse)
1219 struct alps_data *priv = psmouse->private;
1220 unsigned char *packet = psmouse->packet;
1221 struct input_dev *dev = psmouse->dev;
1222 struct alps_fields *f = &priv->f;
1224 memset(f, 0, sizeof(struct alps_fields));
1225 priv->decode_fields(f, packet, psmouse);
1226 if (priv->multi_packet) {
1228 * Sometimes the first packet will indicate a multi-packet
1229 * sequence, but sometimes the next multi-packet would not
1230 * come. Check for this, and when it happens process the
1231 * position packet as usual.
1234 /* Now process the 1st packet */
1235 priv->decode_fields(f, priv->multi_data, psmouse);
1237 priv->multi_packet = 0;
1242 * "f.is_mp" would always be '0' after merging the 1st and 2nd packet.
1243 * When it is set, it means 2nd packet comes without 1st packet come.
1248 /* Save the first packet */
1249 if (!priv->multi_packet && f->first_mp) {
1250 priv->multi_packet = 1;
1251 memcpy(priv->multi_data, packet, sizeof(priv->multi_data));
1255 priv->multi_packet = 0;
1257 alps_report_mt_data(psmouse, (f->fingers <= 4) ? f->fingers : 4);
1259 input_mt_report_finger_count(dev, f->fingers);
1261 input_report_key(dev, BTN_LEFT, f->left);
1262 input_report_key(dev, BTN_RIGHT, f->right);
1263 input_report_key(dev, BTN_MIDDLE, f->middle);
1265 input_report_abs(dev, ABS_PRESSURE, f->pressure);
1269 static bool alps_is_valid_package_ss4_v2(struct psmouse *psmouse)
1271 if (psmouse->pktcnt == 4 && ((psmouse->packet[3] & 0x08) != 0x08))
1273 if (psmouse->pktcnt == 6 && ((psmouse->packet[5] & 0x10) != 0x0))
1278 static DEFINE_MUTEX(alps_mutex);
1280 static void alps_register_bare_ps2_mouse(struct work_struct *work)
1282 struct alps_data *priv =
1283 container_of(work, struct alps_data, dev3_register_work.work);
1284 struct psmouse *psmouse = priv->psmouse;
1285 struct input_dev *dev3;
1288 mutex_lock(&alps_mutex);
1293 dev3 = input_allocate_device();
1295 psmouse_err(psmouse, "failed to allocate secondary device\n");
1300 snprintf(priv->phys3, sizeof(priv->phys3), "%s/%s",
1301 psmouse->ps2dev.serio->phys,
1302 (priv->dev2 ? "input2" : "input1"));
1303 dev3->phys = priv->phys3;
1306 * format of input device name is: "protocol vendor name"
1307 * see function psmouse_switch_protocol() in psmouse-base.c
1309 dev3->name = "PS/2 ALPS Mouse";
1311 dev3->id.bustype = BUS_I8042;
1312 dev3->id.vendor = 0x0002;
1313 dev3->id.product = PSMOUSE_PS2;
1314 dev3->id.version = 0x0000;
1315 dev3->dev.parent = &psmouse->ps2dev.serio->dev;
1317 input_set_capability(dev3, EV_REL, REL_X);
1318 input_set_capability(dev3, EV_REL, REL_Y);
1319 input_set_capability(dev3, EV_KEY, BTN_LEFT);
1320 input_set_capability(dev3, EV_KEY, BTN_RIGHT);
1321 input_set_capability(dev3, EV_KEY, BTN_MIDDLE);
1323 __set_bit(INPUT_PROP_POINTER, dev3->propbit);
1325 error = input_register_device(dev3);
1327 psmouse_err(psmouse,
1328 "failed to register secondary device: %d\n",
1330 input_free_device(dev3);
1338 * Save the error code so that we can detect that we
1339 * already tried to create the device.
1342 priv->dev3 = ERR_PTR(error);
1344 mutex_unlock(&alps_mutex);
1347 static void alps_report_bare_ps2_packet(struct psmouse *psmouse,
1348 unsigned char packet[],
1349 bool report_buttons)
1351 struct alps_data *priv = psmouse->private;
1352 struct input_dev *dev, *dev2 = NULL;
1354 /* Figure out which device to use to report the bare packet */
1355 if (priv->proto_version == ALPS_PROTO_V2 &&
1356 (priv->flags & ALPS_DUALPOINT)) {
1357 /* On V2 devices the DualPoint Stick reports bare packets */
1359 dev2 = psmouse->dev;
1360 } else if (unlikely(IS_ERR_OR_NULL(priv->dev3))) {
1361 /* Register dev3 mouse if we received PS/2 packet first time */
1362 if (!IS_ERR(priv->dev3))
1363 psmouse_queue_work(psmouse, &priv->dev3_register_work,
1371 alps_report_buttons(dev, dev2,
1372 packet[0] & 1, packet[0] & 2, packet[0] & 4);
1374 input_report_rel(dev, REL_X,
1375 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0);
1376 input_report_rel(dev, REL_Y,
1377 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0);
1382 static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse)
1384 struct alps_data *priv = psmouse->private;
1386 if (psmouse->pktcnt < 6)
1387 return PSMOUSE_GOOD_DATA;
1389 if (psmouse->pktcnt == 6) {
1391 * Start a timer to flush the packet if it ends up last
1392 * 6-byte packet in the stream. Timer needs to fire
1393 * psmouse core times out itself. 20 ms should be enough
1394 * to decide if we are getting more data or not.
1396 mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20));
1397 return PSMOUSE_GOOD_DATA;
1400 del_timer(&priv->timer);
1402 if (psmouse->packet[6] & 0x80) {
1405 * Highest bit is set - that means we either had
1406 * complete ALPS packet and this is start of the
1407 * next packet or we got garbage.
1410 if (((psmouse->packet[3] |
1411 psmouse->packet[4] |
1412 psmouse->packet[5]) & 0x80) ||
1413 (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) {
1414 psmouse_dbg(psmouse,
1415 "refusing packet %4ph (suspected interleaved ps/2)\n",
1416 psmouse->packet + 3);
1417 return PSMOUSE_BAD_DATA;
1420 priv->process_packet(psmouse);
1422 /* Continue with the next packet */
1423 psmouse->packet[0] = psmouse->packet[6];
1424 psmouse->pktcnt = 1;
1429 * High bit is 0 - that means that we indeed got a PS/2
1430 * packet in the middle of ALPS packet.
1432 * There is also possibility that we got 6-byte ALPS
1433 * packet followed by 3-byte packet from trackpoint. We
1434 * can not distinguish between these 2 scenarios but
1435 * because the latter is unlikely to happen in course of
1436 * normal operation (user would need to press all
1437 * buttons on the pad and start moving trackpoint
1438 * without touching the pad surface) we assume former.
1439 * Even if we are wrong the wost thing that would happen
1440 * the cursor would jump but we should not get protocol
1441 * de-synchronization.
1444 alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3],
1448 * Continue with the standard ALPS protocol handling,
1449 * but make sure we won't process it as an interleaved
1450 * packet again, which may happen if all buttons are
1451 * pressed. To avoid this let's reset the 4th bit which
1454 psmouse->packet[3] = psmouse->packet[6] & 0xf7;
1455 psmouse->pktcnt = 4;
1458 return PSMOUSE_GOOD_DATA;
1461 static void alps_flush_packet(unsigned long data)
1463 struct psmouse *psmouse = (struct psmouse *)data;
1464 struct alps_data *priv = psmouse->private;
1466 serio_pause_rx(psmouse->ps2dev.serio);
1468 if (psmouse->pktcnt == psmouse->pktsize) {
1471 * We did not any more data in reasonable amount of time.
1472 * Validate the last 3 bytes and process as a standard
1475 if ((psmouse->packet[3] |
1476 psmouse->packet[4] |
1477 psmouse->packet[5]) & 0x80) {
1478 psmouse_dbg(psmouse,
1479 "refusing packet %3ph (suspected interleaved ps/2)\n",
1480 psmouse->packet + 3);
1482 priv->process_packet(psmouse);
1484 psmouse->pktcnt = 0;
1487 serio_continue_rx(psmouse->ps2dev.serio);
1490 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
1492 struct alps_data *priv = psmouse->private;
1495 * Check if we are dealing with a bare PS/2 packet, presumably from
1496 * a device connected to the external PS/2 port. Because bare PS/2
1497 * protocol does not have enough constant bits to self-synchronize
1498 * properly we only do this if the device is fully synchronized.
1499 * Can not distinguish V8's first byte from PS/2 packet's
1501 if (priv->proto_version != ALPS_PROTO_V8 &&
1502 !psmouse->out_of_sync_cnt &&
1503 (psmouse->packet[0] & 0xc8) == 0x08) {
1505 if (psmouse->pktcnt == 3) {
1506 alps_report_bare_ps2_packet(psmouse, psmouse->packet,
1508 return PSMOUSE_FULL_PACKET;
1510 return PSMOUSE_GOOD_DATA;
1513 /* Check for PS/2 packet stuffed in the middle of ALPS packet. */
1515 if ((priv->flags & ALPS_PS2_INTERLEAVED) &&
1516 psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) {
1517 return alps_handle_interleaved_ps2(psmouse);
1520 if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) {
1521 psmouse_dbg(psmouse,
1522 "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n",
1523 psmouse->packet[0], priv->mask0, priv->byte0);
1524 return PSMOUSE_BAD_DATA;
1527 /* Bytes 2 - pktsize should have 0 in the highest bit */
1528 if (priv->proto_version < ALPS_PROTO_V5 &&
1529 psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize &&
1530 (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) {
1531 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
1532 psmouse->pktcnt - 1,
1533 psmouse->packet[psmouse->pktcnt - 1]);
1535 if (priv->proto_version == ALPS_PROTO_V3_RUSHMORE &&
1536 psmouse->pktcnt == psmouse->pktsize) {
1538 * Some Dell boxes, such as Latitude E6440 or E7440
1539 * with closed lid, quite often smash last byte of
1540 * otherwise valid packet with 0xff. Given that the
1541 * next packet is very likely to be valid let's
1542 * report PSMOUSE_FULL_PACKET but not process data,
1543 * rather than reporting PSMOUSE_BAD_DATA and
1546 return PSMOUSE_FULL_PACKET;
1549 return PSMOUSE_BAD_DATA;
1552 if ((priv->proto_version == ALPS_PROTO_V7 &&
1553 !alps_is_valid_package_v7(psmouse)) ||
1554 (priv->proto_version == ALPS_PROTO_V8 &&
1555 !alps_is_valid_package_ss4_v2(psmouse))) {
1556 psmouse_dbg(psmouse, "refusing packet[%i] = %x\n",
1557 psmouse->pktcnt - 1,
1558 psmouse->packet[psmouse->pktcnt - 1]);
1559 return PSMOUSE_BAD_DATA;
1562 if (psmouse->pktcnt == psmouse->pktsize) {
1563 priv->process_packet(psmouse);
1564 return PSMOUSE_FULL_PACKET;
1567 return PSMOUSE_GOOD_DATA;
1570 static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble)
1572 struct ps2dev *ps2dev = &psmouse->ps2dev;
1573 struct alps_data *priv = psmouse->private;
1575 unsigned char *param;
1576 unsigned char dummy[4];
1578 BUG_ON(nibble > 0xf);
1580 command = priv->nibble_commands[nibble].command;
1581 param = (command & 0x0f00) ?
1582 dummy : (unsigned char *)&priv->nibble_commands[nibble].data;
1584 if (ps2_command(ps2dev, param, command))
1590 static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr)
1592 struct ps2dev *ps2dev = &psmouse->ps2dev;
1593 struct alps_data *priv = psmouse->private;
1596 if (ps2_command(ps2dev, NULL, priv->addr_command))
1599 for (i = 12; i >= 0; i -= 4) {
1600 nibble = (addr >> i) & 0xf;
1601 if (alps_command_mode_send_nibble(psmouse, nibble))
1608 static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
1610 struct ps2dev *ps2dev = &psmouse->ps2dev;
1611 unsigned char param[4];
1613 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1617 * The address being read is returned in the first two bytes
1618 * of the result. Check that this address matches the expected
1621 if (addr != ((param[0] << 8) | param[1]))
1627 static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr)
1629 if (alps_command_mode_set_addr(psmouse, addr))
1631 return __alps_command_mode_read_reg(psmouse, addr);
1634 static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value)
1636 if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf))
1638 if (alps_command_mode_send_nibble(psmouse, value & 0xf))
1643 static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr,
1646 if (alps_command_mode_set_addr(psmouse, addr))
1648 return __alps_command_mode_write_reg(psmouse, value);
1651 static int alps_rpt_cmd(struct psmouse *psmouse, int init_command,
1652 int repeated_command, unsigned char *param)
1654 struct ps2dev *ps2dev = &psmouse->ps2dev;
1657 if (init_command && ps2_command(ps2dev, param, init_command))
1660 if (ps2_command(ps2dev, NULL, repeated_command) ||
1661 ps2_command(ps2dev, NULL, repeated_command) ||
1662 ps2_command(ps2dev, NULL, repeated_command))
1665 param[0] = param[1] = param[2] = 0xff;
1666 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
1669 psmouse_dbg(psmouse, "%2.2X report: %3ph\n",
1670 repeated_command, param);
1674 static bool alps_check_valid_firmware_id(unsigned char id[])
1679 if (id[0] == 0x88 &&
1682 (id[1] & 0xf0) == 0xb0 ||
1683 (id[1] & 0xf0) == 0xc0)) {
1690 static int alps_enter_command_mode(struct psmouse *psmouse)
1692 unsigned char param[4];
1694 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) {
1695 psmouse_err(psmouse, "failed to enter command mode\n");
1699 if (!alps_check_valid_firmware_id(param)) {
1700 psmouse_dbg(psmouse,
1701 "unknown response while entering command mode\n");
1707 static inline int alps_exit_command_mode(struct psmouse *psmouse)
1709 struct ps2dev *ps2dev = &psmouse->ps2dev;
1710 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM))
1716 * For DualPoint devices select the device that should respond to
1717 * subsequent commands. It looks like glidepad is behind stickpointer,
1718 * I'd thought it would be other way around...
1720 static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable)
1722 struct ps2dev *ps2dev = &psmouse->ps2dev;
1723 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11;
1725 if (ps2_command(ps2dev, NULL, cmd) ||
1726 ps2_command(ps2dev, NULL, cmd) ||
1727 ps2_command(ps2dev, NULL, cmd) ||
1728 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1731 /* we may get 3 more bytes, just ignore them */
1732 ps2_drain(ps2dev, 3, 100);
1737 static int alps_absolute_mode_v1_v2(struct psmouse *psmouse)
1739 struct ps2dev *ps2dev = &psmouse->ps2dev;
1741 /* Try ALPS magic knock - 4 disable before enable */
1742 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1743 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1744 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1745 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1746 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE))
1750 * Switch mouse to poll (remote) mode so motion data will not
1753 return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL);
1756 static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word)
1761 * b0-b11 are valid bits, send sequence is inverse.
1762 * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1
1764 for (i = 0; i <= 8; i += 4) {
1765 nibble = (word >> i) & 0xf;
1766 if (alps_command_mode_send_nibble(psmouse, nibble))
1773 static int alps_monitor_mode_write_reg(struct psmouse *psmouse,
1774 u16 addr, u16 value)
1776 struct ps2dev *ps2dev = &psmouse->ps2dev;
1778 /* 0x0A0 is the command to write the word */
1779 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) ||
1780 alps_monitor_mode_send_word(psmouse, 0x0A0) ||
1781 alps_monitor_mode_send_word(psmouse, addr) ||
1782 alps_monitor_mode_send_word(psmouse, value) ||
1783 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
1789 static int alps_monitor_mode(struct psmouse *psmouse, bool enable)
1791 struct ps2dev *ps2dev = &psmouse->ps2dev;
1794 /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */
1795 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
1796 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) ||
1797 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1798 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1799 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
1800 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1801 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
1802 ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO))
1805 /* EC to exit monitor mode */
1806 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP))
1813 static int alps_absolute_mode_v6(struct psmouse *psmouse)
1815 u16 reg_val = 0x181;
1818 /* enter monitor mode, to write the register */
1819 if (alps_monitor_mode(psmouse, true))
1822 ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val);
1824 if (alps_monitor_mode(psmouse, false))
1830 static int alps_get_status(struct psmouse *psmouse, char *param)
1832 /* Get status: 0xF5 0xF5 0xF5 0xE9 */
1833 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param))
1840 * Turn touchpad tapping on or off. The sequences are:
1841 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable,
1842 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable.
1843 * My guess that 0xE9 (GetInfo) is here as a sync point.
1844 * For models that also have stickpointer (DualPoints) its tapping
1845 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but
1846 * we don't fiddle with it.
1848 static int alps_tap_mode(struct psmouse *psmouse, int enable)
1850 struct ps2dev *ps2dev = &psmouse->ps2dev;
1851 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES;
1852 unsigned char tap_arg = enable ? 0x0A : 0x00;
1853 unsigned char param[4];
1855 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) ||
1856 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1857 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
1858 ps2_command(ps2dev, &tap_arg, cmd))
1861 if (alps_get_status(psmouse, param))
1868 * alps_poll() - poll the touchpad for current motion packet.
1871 static int alps_poll(struct psmouse *psmouse)
1873 struct alps_data *priv = psmouse->private;
1874 unsigned char buf[sizeof(psmouse->packet)];
1877 if (priv->flags & ALPS_PASS)
1878 alps_passthrough_mode_v2(psmouse, true);
1880 poll_failed = ps2_command(&psmouse->ps2dev, buf,
1881 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0;
1883 if (priv->flags & ALPS_PASS)
1884 alps_passthrough_mode_v2(psmouse, false);
1886 if (poll_failed || (buf[0] & priv->mask0) != priv->byte0)
1889 if ((psmouse->badbyte & 0xc8) == 0x08) {
1891 * Poll the track stick ...
1893 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8)))
1897 memcpy(psmouse->packet, buf, sizeof(buf));
1901 static int alps_hw_init_v1_v2(struct psmouse *psmouse)
1903 struct alps_data *priv = psmouse->private;
1905 if ((priv->flags & ALPS_PASS) &&
1906 alps_passthrough_mode_v2(psmouse, true)) {
1910 if (alps_tap_mode(psmouse, true)) {
1911 psmouse_warn(psmouse, "Failed to enable hardware tapping\n");
1915 if (alps_absolute_mode_v1_v2(psmouse)) {
1916 psmouse_err(psmouse, "Failed to enable absolute mode\n");
1920 if ((priv->flags & ALPS_PASS) &&
1921 alps_passthrough_mode_v2(psmouse, false)) {
1925 /* ALPS needs stream mode, otherwise it won't report any data */
1926 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) {
1927 psmouse_err(psmouse, "Failed to enable stream mode\n");
1934 static int alps_hw_init_v6(struct psmouse *psmouse)
1936 unsigned char param[2] = {0xC8, 0x14};
1938 /* Enter passthrough mode to let trackpoint enter 6byte raw mode */
1939 if (alps_passthrough_mode_v2(psmouse, true))
1942 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1943 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1944 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
1945 ps2_command(&psmouse->ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) ||
1946 ps2_command(&psmouse->ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE))
1949 if (alps_passthrough_mode_v2(psmouse, false))
1952 if (alps_absolute_mode_v6(psmouse)) {
1953 psmouse_err(psmouse, "Failed to enable absolute mode\n");
1961 * Enable or disable passthrough mode to the trackstick.
1963 static int alps_passthrough_mode_v3(struct psmouse *psmouse,
1964 int reg_base, bool enable)
1966 int reg_val, ret = -1;
1968 if (alps_enter_command_mode(psmouse))
1971 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008);
1980 ret = __alps_command_mode_write_reg(psmouse, reg_val);
1983 if (alps_exit_command_mode(psmouse))
1988 /* Must be in command mode when calling this function */
1989 static int alps_absolute_mode_v3(struct psmouse *psmouse)
1993 reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
1998 if (__alps_command_mode_write_reg(psmouse, reg_val))
2004 static int alps_probe_trackstick_v3(struct psmouse *psmouse, int reg_base)
2006 int ret = -EIO, reg_val;
2008 if (alps_enter_command_mode(psmouse))
2011 reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08);
2015 /* bit 7: trackstick is present */
2016 ret = reg_val & 0x80 ? 0 : -ENODEV;
2019 alps_exit_command_mode(psmouse);
2023 static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base)
2025 struct ps2dev *ps2dev = &psmouse->ps2dev;
2027 unsigned char param[4];
2029 if (alps_passthrough_mode_v3(psmouse, reg_base, true))
2033 * E7 report for the trackstick
2035 * There have been reports of failures to seem to trace back
2036 * to the above trackstick check failing. When these occur
2037 * this E7 report fails, so when that happens we continue
2038 * with the assumption that there isn't a trackstick after
2041 if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) {
2042 psmouse_warn(psmouse, "Failed to initialize trackstick (E7 report failed)\n");
2045 psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param);
2048 * Not sure what this does, but it is absolutely
2049 * essential. Without it, the touchpad does not
2050 * work at all and the trackstick just emits normal
2053 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
2054 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
2055 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
2056 alps_command_mode_send_nibble(psmouse, 0x9) ||
2057 alps_command_mode_send_nibble(psmouse, 0x4)) {
2058 psmouse_err(psmouse,
2059 "Error sending magic E6 sequence\n");
2065 * This ensures the trackstick packets are in the format
2066 * supported by this driver. If bit 1 isn't set the packet
2067 * format is different.
2069 if (alps_enter_command_mode(psmouse) ||
2070 alps_command_mode_write_reg(psmouse,
2071 reg_base + 0x08, 0x82) ||
2072 alps_exit_command_mode(psmouse))
2077 if (alps_passthrough_mode_v3(psmouse, reg_base, false))
2083 static int alps_hw_init_v3(struct psmouse *psmouse)
2085 struct ps2dev *ps2dev = &psmouse->ps2dev;
2087 unsigned char param[4];
2089 reg_val = alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE);
2090 if (reg_val == -EIO)
2094 alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO)
2097 if (alps_enter_command_mode(psmouse) ||
2098 alps_absolute_mode_v3(psmouse)) {
2099 psmouse_err(psmouse, "Failed to enter absolute mode\n");
2103 reg_val = alps_command_mode_read_reg(psmouse, 0x0006);
2106 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
2109 reg_val = alps_command_mode_read_reg(psmouse, 0x0007);
2112 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01))
2115 if (alps_command_mode_read_reg(psmouse, 0x0144) == -1)
2117 if (__alps_command_mode_write_reg(psmouse, 0x04))
2120 if (alps_command_mode_read_reg(psmouse, 0x0159) == -1)
2122 if (__alps_command_mode_write_reg(psmouse, 0x03))
2125 if (alps_command_mode_read_reg(psmouse, 0x0163) == -1)
2127 if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03))
2130 if (alps_command_mode_read_reg(psmouse, 0x0162) == -1)
2132 if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04))
2135 alps_exit_command_mode(psmouse);
2137 /* Set rate and enable data reporting */
2139 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
2140 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
2141 psmouse_err(psmouse, "Failed to enable data reporting\n");
2149 * Leaving the touchpad in command mode will essentially render
2150 * it unusable until the machine reboots, so exit it here just
2153 alps_exit_command_mode(psmouse);
2157 static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch)
2159 int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys;
2160 struct alps_data *priv = psmouse->private;
2162 reg = alps_command_mode_read_reg(psmouse, reg_pitch);
2166 x_pitch = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */
2167 x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */
2169 y_pitch = (char)reg >> 4; /* sign extend upper 4 bits */
2170 y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */
2172 reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1);
2176 x_electrode = (char)(reg << 4) >> 4; /* sign extend lower 4 bits */
2177 x_electrode = 17 + x_electrode;
2179 y_electrode = (char)reg >> 4; /* sign extend upper 4 bits */
2180 y_electrode = 13 + y_electrode;
2182 x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */
2183 y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */
2185 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */
2186 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */
2188 psmouse_dbg(psmouse,
2189 "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n",
2190 x_pitch, y_pitch, x_electrode, y_electrode,
2191 x_phys / 10, y_phys / 10, priv->x_res, priv->y_res);
2196 static int alps_hw_init_rushmore_v3(struct psmouse *psmouse)
2198 struct alps_data *priv = psmouse->private;
2199 struct ps2dev *ps2dev = &psmouse->ps2dev;
2200 int reg_val, ret = -1;
2202 if (priv->flags & ALPS_DUALPOINT) {
2203 reg_val = alps_setup_trackstick_v3(psmouse,
2204 ALPS_REG_BASE_RUSHMORE);
2205 if (reg_val == -EIO)
2209 if (alps_enter_command_mode(psmouse) ||
2210 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 ||
2211 alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00))
2214 if (alps_get_v3_v7_resolution(psmouse, 0xc2da))
2217 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6);
2220 if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd))
2223 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64))
2226 /* enter absolute mode */
2227 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4);
2230 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02))
2233 alps_exit_command_mode(psmouse);
2234 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
2237 alps_exit_command_mode(psmouse);
2241 /* Must be in command mode when calling this function */
2242 static int alps_absolute_mode_v4(struct psmouse *psmouse)
2246 reg_val = alps_command_mode_read_reg(psmouse, 0x0004);
2251 if (__alps_command_mode_write_reg(psmouse, reg_val))
2257 static int alps_hw_init_v4(struct psmouse *psmouse)
2259 struct ps2dev *ps2dev = &psmouse->ps2dev;
2260 unsigned char param[4];
2262 if (alps_enter_command_mode(psmouse))
2265 if (alps_absolute_mode_v4(psmouse)) {
2266 psmouse_err(psmouse, "Failed to enter absolute mode\n");
2270 if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c))
2273 if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03))
2276 if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03))
2279 if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15))
2282 if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01))
2285 if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03))
2288 if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03))
2291 if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03))
2294 alps_exit_command_mode(psmouse);
2297 * This sequence changes the output from a 9-byte to an
2298 * 8-byte format. All the same data seems to be present,
2299 * just in a more compact format.
2304 if (ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) ||
2305 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE) ||
2306 ps2_command(ps2dev, ¶m[2], PSMOUSE_CMD_SETRATE) ||
2307 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID))
2310 /* Set rate and enable data reporting */
2312 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) ||
2313 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
2314 psmouse_err(psmouse, "Failed to enable data reporting\n");
2322 * Leaving the touchpad in command mode will essentially render
2323 * it unusable until the machine reboots, so exit it here just
2326 alps_exit_command_mode(psmouse);
2330 static int alps_get_otp_values_ss4_v2(struct psmouse *psmouse,
2331 unsigned char index, unsigned char otp[])
2333 struct ps2dev *ps2dev = &psmouse->ps2dev;
2337 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
2338 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
2339 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO))
2345 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
2346 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
2347 ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO))
2356 static int alps_update_device_area_ss4_v2(unsigned char otp[][4],
2357 struct alps_data *priv)
2359 int num_x_electrode;
2360 int num_y_electrode;
2361 int x_pitch, y_pitch, x_phys, y_phys;
2363 num_x_electrode = SS4_NUMSENSOR_XOFFSET + (otp[1][0] & 0x0F);
2364 num_y_electrode = SS4_NUMSENSOR_YOFFSET + ((otp[1][0] >> 4) & 0x0F);
2366 priv->x_max = (num_x_electrode - 1) * SS4_COUNT_PER_ELECTRODE;
2367 priv->y_max = (num_y_electrode - 1) * SS4_COUNT_PER_ELECTRODE;
2369 x_pitch = ((otp[1][2] >> 2) & 0x07) + SS4_MIN_PITCH_MM;
2370 y_pitch = ((otp[1][2] >> 5) & 0x07) + SS4_MIN_PITCH_MM;
2372 x_phys = x_pitch * (num_x_electrode - 1); /* In 0.1 mm units */
2373 y_phys = y_pitch * (num_y_electrode - 1); /* In 0.1 mm units */
2375 priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */
2376 priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */
2381 static int alps_update_btn_info_ss4_v2(unsigned char otp[][4],
2382 struct alps_data *priv)
2384 unsigned char is_btnless;
2386 is_btnless = (otp[1][1] >> 3) & 0x01;
2389 priv->flags |= ALPS_BUTTONPAD;
2394 static int alps_set_defaults_ss4_v2(struct psmouse *psmouse,
2395 struct alps_data *priv)
2397 unsigned char otp[2][4];
2399 memset(otp, 0, sizeof(otp));
2401 if (alps_get_otp_values_ss4_v2(psmouse, 0, &otp[0][0]) ||
2402 alps_get_otp_values_ss4_v2(psmouse, 1, &otp[1][0]))
2405 alps_update_device_area_ss4_v2(otp, priv);
2407 alps_update_btn_info_ss4_v2(otp, priv);
2412 static int alps_dolphin_get_device_area(struct psmouse *psmouse,
2413 struct alps_data *priv)
2415 struct ps2dev *ps2dev = &psmouse->ps2dev;
2416 unsigned char param[4] = {0};
2417 int num_x_electrode, num_y_electrode;
2419 if (alps_enter_command_mode(psmouse))
2423 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) ||
2424 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
2425 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) ||
2426 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) ||
2427 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE))
2430 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
2434 * Dolphin's sensor line number is not fixed. It can be calculated
2435 * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET.
2436 * Further more, we can get device's x_max and y_max by multiplying
2437 * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE.
2439 * e.g. When we get register's sensor_x = 11 & sensor_y = 8,
2440 * real sensor line number X = 11 + 8 = 19, and
2441 * real sensor line number Y = 8 + 1 = 9.
2442 * So, x_max = (19 - 1) * 64 = 1152, and
2443 * y_max = (9 - 1) * 64 = 512.
2445 num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F);
2446 num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F);
2447 priv->x_bits = num_x_electrode;
2448 priv->y_bits = num_y_electrode;
2449 priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE;
2450 priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE;
2452 if (alps_exit_command_mode(psmouse))
2458 static int alps_hw_init_dolphin_v1(struct psmouse *psmouse)
2460 struct ps2dev *ps2dev = &psmouse->ps2dev;
2461 unsigned char param[2];
2463 /* This is dolphin "v1" as empirically defined by florin9doi */
2467 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
2468 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) ||
2469 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE))
2475 static int alps_hw_init_v7(struct psmouse *psmouse)
2477 struct ps2dev *ps2dev = &psmouse->ps2dev;
2478 int reg_val, ret = -1;
2480 if (alps_enter_command_mode(psmouse) ||
2481 alps_command_mode_read_reg(psmouse, 0xc2d9) == -1)
2484 if (alps_get_v3_v7_resolution(psmouse, 0xc397))
2487 if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64))
2490 reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4);
2493 if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02))
2496 alps_exit_command_mode(psmouse);
2497 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
2500 alps_exit_command_mode(psmouse);
2504 static int alps_hw_init_ss4_v2(struct psmouse *psmouse)
2506 struct ps2dev *ps2dev = &psmouse->ps2dev;
2507 char param[2] = {0x64, 0x28};
2510 /* enter absolute mode */
2511 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
2512 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) ||
2513 ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) ||
2514 ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) {
2518 /* T.B.D. Decread noise packet number, delete in the future */
2519 if (alps_exit_command_mode(psmouse) ||
2520 alps_enter_command_mode(psmouse) ||
2521 alps_command_mode_write_reg(psmouse, 0x001D, 0x20)) {
2524 alps_exit_command_mode(psmouse);
2526 return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE);
2529 alps_exit_command_mode(psmouse);
2533 static int alps_set_protocol(struct psmouse *psmouse,
2534 struct alps_data *priv,
2535 const struct alps_protocol_info *protocol)
2537 psmouse->private = priv;
2539 setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse);
2541 priv->proto_version = protocol->version;
2542 priv->byte0 = protocol->byte0;
2543 priv->mask0 = protocol->mask0;
2544 priv->flags = protocol->flags;
2551 switch (priv->proto_version) {
2554 priv->hw_init = alps_hw_init_v1_v2;
2555 priv->process_packet = alps_process_packet_v1_v2;
2556 priv->set_abs_params = alps_set_abs_params_st;
2562 priv->hw_init = alps_hw_init_v3;
2563 priv->process_packet = alps_process_packet_v3;
2564 priv->set_abs_params = alps_set_abs_params_mt;
2565 priv->decode_fields = alps_decode_pinnacle;
2566 priv->nibble_commands = alps_v3_nibble_commands;
2567 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2570 case ALPS_PROTO_V3_RUSHMORE:
2571 priv->hw_init = alps_hw_init_rushmore_v3;
2572 priv->process_packet = alps_process_packet_v3;
2573 priv->set_abs_params = alps_set_abs_params_mt;
2574 priv->decode_fields = alps_decode_rushmore;
2575 priv->nibble_commands = alps_v3_nibble_commands;
2576 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2580 if (alps_probe_trackstick_v3(psmouse,
2581 ALPS_REG_BASE_RUSHMORE) < 0)
2582 priv->flags &= ~ALPS_DUALPOINT;
2587 priv->hw_init = alps_hw_init_v4;
2588 priv->process_packet = alps_process_packet_v4;
2589 priv->set_abs_params = alps_set_abs_params_mt;
2590 priv->nibble_commands = alps_v4_nibble_commands;
2591 priv->addr_command = PSMOUSE_CMD_DISABLE;
2595 priv->hw_init = alps_hw_init_dolphin_v1;
2596 priv->process_packet = alps_process_touchpad_packet_v3_v5;
2597 priv->decode_fields = alps_decode_dolphin;
2598 priv->set_abs_params = alps_set_abs_params_mt;
2599 priv->nibble_commands = alps_v3_nibble_commands;
2600 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2604 if (alps_dolphin_get_device_area(psmouse, priv))
2610 priv->hw_init = alps_hw_init_v6;
2611 priv->process_packet = alps_process_packet_v6;
2612 priv->set_abs_params = alps_set_abs_params_st;
2613 priv->nibble_commands = alps_v6_nibble_commands;
2619 priv->hw_init = alps_hw_init_v7;
2620 priv->process_packet = alps_process_packet_v7;
2621 priv->decode_fields = alps_decode_packet_v7;
2622 priv->set_abs_params = alps_set_abs_params_v7;
2623 priv->nibble_commands = alps_v3_nibble_commands;
2624 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2625 priv->x_max = 0xfff;
2626 priv->y_max = 0x7ff;
2628 if (priv->fw_ver[1] != 0xba)
2629 priv->flags |= ALPS_BUTTONPAD;
2634 priv->hw_init = alps_hw_init_ss4_v2;
2635 priv->process_packet = alps_process_packet_ss4_v2;
2636 priv->decode_fields = alps_decode_ss4_v2;
2637 priv->set_abs_params = alps_set_abs_params_ss4_v2;
2638 priv->nibble_commands = alps_v3_nibble_commands;
2639 priv->addr_command = PSMOUSE_CMD_RESET_WRAP;
2641 if (alps_set_defaults_ss4_v2(psmouse, priv))
2650 static const struct alps_protocol_info *alps_match_table(unsigned char *e7,
2653 const struct alps_model_info *model;
2656 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) {
2657 model = &alps_model_data[i];
2659 if (!memcmp(e7, model->signature, sizeof(model->signature)) &&
2660 (!model->command_mode_resp ||
2661 model->command_mode_resp == ec[2])) {
2663 return &model->protocol_info;
2670 static int alps_identify(struct psmouse *psmouse, struct alps_data *priv)
2672 const struct alps_protocol_info *protocol;
2673 unsigned char e6[4], e7[4], ec[4];
2677 * First try "E6 report".
2678 * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed.
2679 * The bits 0-2 of the first byte will be 1s if some buttons are
2682 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
2683 PSMOUSE_CMD_SETSCALE11, e6))
2686 if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100))
2690 * Now get the "E7" and "EC" reports. These will uniquely identify
2691 * most ALPS touchpads.
2693 if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
2694 PSMOUSE_CMD_SETSCALE21, e7) ||
2695 alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES,
2696 PSMOUSE_CMD_RESET_WRAP, ec) ||
2697 alps_exit_command_mode(psmouse))
2700 protocol = alps_match_table(e7, ec);
2702 if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 &&
2703 ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) {
2704 protocol = &alps_v5_protocol_data;
2705 } else if (ec[0] == 0x88 &&
2706 ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) {
2707 protocol = &alps_v7_protocol_data;
2708 } else if (ec[0] == 0x88 && ec[1] == 0x08) {
2709 protocol = &alps_v3_rushmore_data;
2710 } else if (ec[0] == 0x88 && ec[1] == 0x07 &&
2711 ec[2] >= 0x90 && ec[2] <= 0x9d) {
2712 protocol = &alps_v3_protocol_data;
2713 } else if (e7[0] == 0x73 && e7[1] == 0x03 &&
2714 e7[2] == 0x14 && ec[1] == 0x02) {
2715 protocol = &alps_v8_protocol_data;
2717 psmouse_dbg(psmouse,
2718 "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec);
2724 /* Save the Firmware version */
2725 memcpy(priv->fw_ver, ec, 3);
2726 error = alps_set_protocol(psmouse, priv, protocol);
2734 static int alps_reconnect(struct psmouse *psmouse)
2736 struct alps_data *priv = psmouse->private;
2738 psmouse_reset(psmouse);
2740 if (alps_identify(psmouse, priv) < 0)
2743 return priv->hw_init(psmouse);
2746 static void alps_disconnect(struct psmouse *psmouse)
2748 struct alps_data *priv = psmouse->private;
2750 psmouse_reset(psmouse);
2751 del_timer_sync(&priv->timer);
2753 input_unregister_device(priv->dev2);
2754 if (!IS_ERR_OR_NULL(priv->dev3))
2755 input_unregister_device(priv->dev3);
2759 static void alps_set_abs_params_st(struct alps_data *priv,
2760 struct input_dev *dev1)
2762 input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0);
2763 input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0);
2764 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
2767 static void alps_set_abs_params_mt_common(struct alps_data *priv,
2768 struct input_dev *dev1)
2770 input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0);
2771 input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0);
2773 input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res);
2774 input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res);
2776 set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit);
2777 set_bit(BTN_TOOL_QUADTAP, dev1->keybit);
2780 static void alps_set_abs_params_mt(struct alps_data *priv,
2781 struct input_dev *dev1)
2783 alps_set_abs_params_mt_common(priv, dev1);
2784 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
2786 input_mt_init_slots(dev1, MAX_TOUCHES,
2787 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED |
2788 INPUT_MT_TRACK | INPUT_MT_SEMI_MT);
2791 static void alps_set_abs_params_v7(struct alps_data *priv,
2792 struct input_dev *dev1)
2794 alps_set_abs_params_mt_common(priv, dev1);
2795 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit);
2797 input_mt_init_slots(dev1, MAX_TOUCHES,
2798 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED |
2801 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit);
2804 static void alps_set_abs_params_ss4_v2(struct alps_data *priv,
2805 struct input_dev *dev1)
2807 alps_set_abs_params_mt_common(priv, dev1);
2808 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
2809 set_bit(BTN_TOOL_QUINTTAP, dev1->keybit);
2811 input_mt_init_slots(dev1, MAX_TOUCHES,
2812 INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED |
2816 int alps_init(struct psmouse *psmouse)
2818 struct alps_data *priv = psmouse->private;
2819 struct input_dev *dev1 = psmouse->dev;
2822 error = priv->hw_init(psmouse);
2827 * Undo part of setup done for us by psmouse core since touchpad
2828 * is not a relative device.
2830 __clear_bit(EV_REL, dev1->evbit);
2831 __clear_bit(REL_X, dev1->relbit);
2832 __clear_bit(REL_Y, dev1->relbit);
2835 * Now set up our capabilities.
2837 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY);
2838 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH);
2839 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER);
2840 dev1->keybit[BIT_WORD(BTN_LEFT)] |=
2841 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
2843 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS);
2845 priv->set_abs_params(priv, dev1);
2847 if (priv->flags & ALPS_WHEEL) {
2848 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL);
2849 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL);
2852 if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
2853 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD);
2854 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK);
2857 if (priv->flags & ALPS_FOUR_BUTTONS) {
2858 dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0);
2859 dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1);
2860 dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2);
2861 dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3);
2862 } else if (priv->flags & ALPS_BUTTONPAD) {
2863 set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit);
2864 clear_bit(BTN_RIGHT, dev1->keybit);
2866 dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE);
2869 if (priv->flags & ALPS_DUALPOINT) {
2870 struct input_dev *dev2;
2872 dev2 = input_allocate_device();
2874 psmouse_err(psmouse,
2875 "failed to allocate trackstick device\n");
2880 snprintf(priv->phys2, sizeof(priv->phys2), "%s/input1",
2881 psmouse->ps2dev.serio->phys);
2882 dev2->phys = priv->phys2;
2885 * format of input device name is: "protocol vendor name"
2886 * see function psmouse_switch_protocol() in psmouse-base.c
2888 dev2->name = "AlpsPS/2 ALPS DualPoint Stick";
2890 dev2->id.bustype = BUS_I8042;
2891 dev2->id.vendor = 0x0002;
2892 dev2->id.product = PSMOUSE_ALPS;
2893 dev2->id.version = priv->proto_version;
2894 dev2->dev.parent = &psmouse->ps2dev.serio->dev;
2896 input_set_capability(dev2, EV_REL, REL_X);
2897 input_set_capability(dev2, EV_REL, REL_Y);
2898 input_set_capability(dev2, EV_KEY, BTN_LEFT);
2899 input_set_capability(dev2, EV_KEY, BTN_RIGHT);
2900 input_set_capability(dev2, EV_KEY, BTN_MIDDLE);
2902 __set_bit(INPUT_PROP_POINTER, dev2->propbit);
2903 __set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit);
2905 error = input_register_device(dev2);
2907 psmouse_err(psmouse,
2908 "failed to register trackstick device: %d\n",
2910 input_free_device(dev2);
2917 priv->psmouse = psmouse;
2919 INIT_DELAYED_WORK(&priv->dev3_register_work,
2920 alps_register_bare_ps2_mouse);
2922 psmouse->protocol_handler = alps_process_byte;
2923 psmouse->poll = alps_poll;
2924 psmouse->disconnect = alps_disconnect;
2925 psmouse->reconnect = alps_reconnect;
2926 psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6;
2928 /* We are having trouble resyncing ALPS touchpads so disable it for now */
2929 psmouse->resync_time = 0;
2931 /* Allow 2 invalid packets without resetting device */
2932 psmouse->resetafter = psmouse->pktsize * 2;
2937 psmouse_reset(psmouse);
2939 * Even though we did not allocate psmouse->private we do free
2942 kfree(psmouse->private);
2943 psmouse->private = NULL;
2947 int alps_detect(struct psmouse *psmouse, bool set_properties)
2949 struct alps_data *priv;
2952 error = alps_identify(psmouse, NULL);
2957 * Reset the device to make sure it is fully operational:
2958 * on some laptops, like certain Dell Latitudes, we may
2959 * fail to properly detect presence of trackstick if device
2960 * has not been reset.
2962 psmouse_reset(psmouse);
2964 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL);
2968 error = alps_identify(psmouse, priv);
2974 if (set_properties) {
2975 psmouse->vendor = "ALPS";
2976 psmouse->name = priv->flags & ALPS_DUALPOINT ?
2977 "DualPoint TouchPad" : "GlidePoint";
2978 psmouse->model = priv->proto_version;
2981 * Destroy alps_data structure we allocated earlier since
2982 * this was just a "trial run". Otherwise we'll keep it
2983 * to be used by alps_init() which has to be called if
2984 * we succeed and set_properties is true.
2987 psmouse->private = NULL;