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1da177e4 LT |
1 | /* |
2 | * ALPS touchpad PS/2 mouse driver | |
3 | * | |
4 | * Copyright (c) 2003 Neil Brown <neilb@cse.unsw.edu.au> | |
963f626d | 5 | * Copyright (c) 2003-2005 Peter Osterlund <petero2@telia.com> |
1da177e4 LT |
6 | * Copyright (c) 2004 Dmitry Torokhov <dtor@mail.ru> |
7 | * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz> | |
1d9f2626 | 8 | * Copyright (c) 2009 Sebastian Kapfer <sebastian_kapfer@gmx.net> |
1da177e4 LT |
9 | * |
10 | * ALPS detection, tap switching and status querying info is taken from | |
11 | * tpconfig utility (by C. Scott Ananian and Bruce Kall). | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify it | |
14 | * under the terms of the GNU General Public License version 2 as published by | |
15 | * the Free Software Foundation. | |
16 | */ | |
17 | ||
5a0e3ad6 | 18 | #include <linux/slab.h> |
1da177e4 | 19 | #include <linux/input.h> |
01ce661f | 20 | #include <linux/input/mt.h> |
1da177e4 LT |
21 | #include <linux/serio.h> |
22 | #include <linux/libps2.h> | |
23 | ||
24 | #include "psmouse.h" | |
25 | #include "alps.h" | |
26 | ||
25bded7c SF |
27 | /* |
28 | * Definitions for ALPS version 3 and 4 command mode protocol | |
29 | */ | |
01ce661f SF |
30 | #define ALPS_V3_X_MAX 2000 |
31 | #define ALPS_V3_Y_MAX 1400 | |
32 | ||
33 | #define ALPS_BITMAP_X_BITS 15 | |
34 | #define ALPS_BITMAP_Y_BITS 11 | |
35 | ||
25bded7c SF |
36 | #define ALPS_CMD_NIBBLE_10 0x01f2 |
37 | ||
38 | static const struct alps_nibble_commands alps_v3_nibble_commands[] = { | |
39 | { PSMOUSE_CMD_SETPOLL, 0x00 }, /* 0 */ | |
40 | { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */ | |
41 | { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */ | |
42 | { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */ | |
43 | { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */ | |
44 | { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */ | |
45 | { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */ | |
46 | { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */ | |
47 | { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */ | |
48 | { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */ | |
49 | { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */ | |
50 | { PSMOUSE_CMD_SETRES, 0x00 }, /* b */ | |
51 | { PSMOUSE_CMD_SETRES, 0x01 }, /* c */ | |
52 | { PSMOUSE_CMD_SETRES, 0x02 }, /* d */ | |
53 | { PSMOUSE_CMD_SETRES, 0x03 }, /* e */ | |
54 | { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ | |
55 | }; | |
56 | ||
57 | static const struct alps_nibble_commands alps_v4_nibble_commands[] = { | |
58 | { PSMOUSE_CMD_ENABLE, 0x00 }, /* 0 */ | |
59 | { PSMOUSE_CMD_RESET_DIS, 0x00 }, /* 1 */ | |
60 | { PSMOUSE_CMD_SETSCALE21, 0x00 }, /* 2 */ | |
61 | { PSMOUSE_CMD_SETRATE, 0x0a }, /* 3 */ | |
62 | { PSMOUSE_CMD_SETRATE, 0x14 }, /* 4 */ | |
63 | { PSMOUSE_CMD_SETRATE, 0x28 }, /* 5 */ | |
64 | { PSMOUSE_CMD_SETRATE, 0x3c }, /* 6 */ | |
65 | { PSMOUSE_CMD_SETRATE, 0x50 }, /* 7 */ | |
66 | { PSMOUSE_CMD_SETRATE, 0x64 }, /* 8 */ | |
67 | { PSMOUSE_CMD_SETRATE, 0xc8 }, /* 9 */ | |
68 | { ALPS_CMD_NIBBLE_10, 0x00 }, /* a */ | |
69 | { PSMOUSE_CMD_SETRES, 0x00 }, /* b */ | |
70 | { PSMOUSE_CMD_SETRES, 0x01 }, /* c */ | |
71 | { PSMOUSE_CMD_SETRES, 0x02 }, /* d */ | |
72 | { PSMOUSE_CMD_SETRES, 0x03 }, /* e */ | |
73 | { PSMOUSE_CMD_SETSCALE11, 0x00 }, /* f */ | |
74 | }; | |
75 | ||
76 | ||
71bb21b6 ML |
77 | #define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */ |
78 | #define ALPS_PASS 0x04 /* device has a pass-through port */ | |
79 | ||
80 | #define ALPS_WHEEL 0x08 /* hardware wheel present */ | |
81 | #define ALPS_FW_BK_1 0x10 /* front & back buttons present */ | |
82 | #define ALPS_FW_BK_2 0x20 /* front & back buttons present */ | |
83 | #define ALPS_FOUR_BUTTONS 0x40 /* 4 direction button present */ | |
1d9f2626 SK |
84 | #define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with |
85 | 6-byte ALPS packet */ | |
1da177e4 | 86 | |
e38de678 | 87 | static const struct alps_model_info alps_model_data[] = { |
25bded7c SF |
88 | { { 0x32, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Toshiba Salellite Pro M10 */ |
89 | { { 0x33, 0x02, 0x0a }, 0x00, ALPS_PROTO_V1, 0x88, 0xf8, 0 }, /* UMAX-530T */ | |
90 | { { 0x53, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, | |
91 | { { 0x53, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, | |
92 | { { 0x60, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, /* HP ze1115 */ | |
93 | { { 0x63, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, | |
94 | { { 0x63, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, | |
95 | { { 0x63, 0x02, 0x28 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Fujitsu Siemens S6010 */ | |
96 | { { 0x63, 0x02, 0x3c }, 0x00, ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL }, /* Toshiba Satellite S2400-103 */ | |
97 | { { 0x63, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 }, /* NEC Versa L320 */ | |
98 | { { 0x63, 0x02, 0x64 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, | |
99 | { { 0x63, 0x03, 0xc8 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D800 */ | |
100 | { { 0x73, 0x00, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT }, /* ThinkPad R61 8918-5QG */ | |
101 | { { 0x73, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, 0 }, | |
102 | { { 0x73, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Ahtec Laptop */ | |
103 | { { 0x20, 0x02, 0x0e }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* XXX */ | |
104 | { { 0x22, 0x02, 0x0a }, 0x00, ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, | |
105 | { { 0x22, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D600 */ | |
1d9f2626 | 106 | /* Dell Latitude E5500, E6400, E6500, Precision M4400 */ |
25bded7c | 107 | { { 0x62, 0x02, 0x14 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf, |
1d9f2626 | 108 | ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED }, |
25bded7c SF |
109 | { { 0x73, 0x02, 0x50 }, 0x00, ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS }, /* Dell Vostro 1400 */ |
110 | { { 0x52, 0x01, 0x14 }, 0x00, ALPS_PROTO_V2, 0xff, 0xff, | |
111 | ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED }, /* Toshiba Tecra A11-11L */ | |
112 | { { 0x73, 0x02, 0x64 }, 0x9b, ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT }, | |
113 | { { 0x73, 0x02, 0x64 }, 0x9d, ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT }, | |
114 | { { 0x73, 0x02, 0x64 }, 0x8a, ALPS_PROTO_V4, 0x8f, 0x8f, 0 }, | |
1da177e4 LT |
115 | }; |
116 | ||
117 | /* | |
118 | * XXX - this entry is suspicious. First byte has zero lower nibble, | |
119 | * which is what a normal mouse would report. Also, the value 0x0e | |
120 | * isn't valid per PS/2 spec. | |
121 | */ | |
122 | ||
d4b347b2 | 123 | /* Packet formats are described in Documentation/input/alps.txt */ |
1da177e4 | 124 | |
1d9f2626 SK |
125 | static bool alps_is_valid_first_byte(const struct alps_model_info *model, |
126 | unsigned char data) | |
127 | { | |
128 | return (data & model->mask0) == model->byte0; | |
129 | } | |
130 | ||
131 | static void alps_report_buttons(struct psmouse *psmouse, | |
132 | struct input_dev *dev1, struct input_dev *dev2, | |
133 | int left, int right, int middle) | |
134 | { | |
c91ed059 MB |
135 | struct input_dev *dev; |
136 | ||
137 | /* | |
138 | * If shared button has already been reported on the | |
139 | * other device (dev2) then this event should be also | |
140 | * sent through that device. | |
141 | */ | |
142 | dev = test_bit(BTN_LEFT, dev2->key) ? dev2 : dev1; | |
143 | input_report_key(dev, BTN_LEFT, left); | |
144 | ||
145 | dev = test_bit(BTN_RIGHT, dev2->key) ? dev2 : dev1; | |
146 | input_report_key(dev, BTN_RIGHT, right); | |
147 | ||
148 | dev = test_bit(BTN_MIDDLE, dev2->key) ? dev2 : dev1; | |
149 | input_report_key(dev, BTN_MIDDLE, middle); | |
150 | ||
151 | /* | |
152 | * Sync the _other_ device now, we'll do the first | |
153 | * device later once we report the rest of the events. | |
154 | */ | |
155 | input_sync(dev2); | |
1d9f2626 SK |
156 | } |
157 | ||
25bded7c | 158 | static void alps_process_packet_v1_v2(struct psmouse *psmouse) |
1da177e4 LT |
159 | { |
160 | struct alps_data *priv = psmouse->private; | |
71bb21b6 | 161 | const struct alps_model_info *model = priv->i; |
1da177e4 | 162 | unsigned char *packet = psmouse->packet; |
2e5b636b DT |
163 | struct input_dev *dev = psmouse->dev; |
164 | struct input_dev *dev2 = priv->dev2; | |
1da177e4 | 165 | int x, y, z, ges, fin, left, right, middle; |
c30b4c10 | 166 | int back = 0, forward = 0; |
1da177e4 | 167 | |
fa629ef5 | 168 | if (model->proto_version == ALPS_PROTO_V1) { |
d2f4012f YM |
169 | left = packet[2] & 0x10; |
170 | right = packet[2] & 0x08; | |
1da177e4 LT |
171 | middle = 0; |
172 | x = packet[1] | ((packet[0] & 0x07) << 7); | |
173 | y = packet[4] | ((packet[3] & 0x07) << 7); | |
174 | z = packet[5]; | |
175 | } else { | |
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)); | |
181 | z = packet[5]; | |
182 | } | |
183 | ||
71bb21b6 | 184 | if (model->flags & ALPS_FW_BK_1) { |
3c00bb96 LK |
185 | back = packet[0] & 0x10; |
186 | forward = packet[2] & 4; | |
c30b4c10 ICR |
187 | } |
188 | ||
71bb21b6 | 189 | if (model->flags & ALPS_FW_BK_2) { |
c30b4c10 ICR |
190 | back = packet[3] & 4; |
191 | forward = packet[2] & 4; | |
192 | if ((middle = forward && back)) | |
193 | forward = back = 0; | |
194 | } | |
195 | ||
1da177e4 LT |
196 | ges = packet[2] & 1; |
197 | fin = packet[2] & 2; | |
198 | ||
71bb21b6 | 199 | if ((model->flags & ALPS_DUALPOINT) && z == 127) { |
1da177e4 LT |
200 | input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x)); |
201 | input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y)); | |
d7ed5d88 | 202 | |
1d9f2626 | 203 | alps_report_buttons(psmouse, dev2, dev, left, right, middle); |
d7ed5d88 | 204 | |
1da177e4 LT |
205 | input_sync(dev2); |
206 | return; | |
207 | } | |
208 | ||
1d9f2626 | 209 | alps_report_buttons(psmouse, dev, dev2, left, right, middle); |
d7ed5d88 | 210 | |
1da177e4 | 211 | /* Convert hardware tap to a reasonable Z value */ |
71bb21b6 ML |
212 | if (ges && !fin) |
213 | z = 40; | |
1da177e4 LT |
214 | |
215 | /* | |
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. | |
219 | */ | |
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); | |
225 | input_sync(dev); | |
226 | } | |
227 | priv->prev_fin = fin; | |
228 | ||
71bb21b6 ML |
229 | if (z > 30) |
230 | input_report_key(dev, BTN_TOUCH, 1); | |
231 | if (z < 25) | |
232 | input_report_key(dev, BTN_TOUCH, 0); | |
1da177e4 LT |
233 | |
234 | if (z > 0) { | |
235 | input_report_abs(dev, ABS_X, x); | |
236 | input_report_abs(dev, ABS_Y, y); | |
237 | } | |
238 | ||
239 | input_report_abs(dev, ABS_PRESSURE, z); | |
240 | input_report_key(dev, BTN_TOOL_FINGER, z > 0); | |
241 | ||
71bb21b6 | 242 | if (model->flags & ALPS_WHEEL) |
e6c047b9 | 243 | input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07)); |
1da177e4 | 244 | |
71bb21b6 | 245 | if (model->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { |
c30b4c10 ICR |
246 | input_report_key(dev, BTN_FORWARD, forward); |
247 | input_report_key(dev, BTN_BACK, back); | |
1da177e4 LT |
248 | } |
249 | ||
71bb21b6 ML |
250 | if (model->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); | |
255 | } | |
256 | ||
1da177e4 LT |
257 | input_sync(dev); |
258 | } | |
259 | ||
01ce661f SF |
260 | /* |
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 | |
263 | * bitmaps was empty. | |
264 | * | |
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 | |
268 | * is greater than 0. | |
269 | */ | |
270 | static int alps_process_bitmap(unsigned int x_map, unsigned int y_map, | |
271 | int *x1, int *y1, int *x2, int *y2) | |
272 | { | |
273 | struct alps_bitmap_point { | |
274 | int start_bit; | |
275 | int num_bits; | |
276 | }; | |
277 | ||
278 | int fingers_x = 0, fingers_y = 0, fingers; | |
279 | int i, bit, prev_bit; | |
280 | struct alps_bitmap_point x_low = {0,}, x_high = {0,}; | |
281 | struct alps_bitmap_point y_low = {0,}, y_high = {0,}; | |
282 | struct alps_bitmap_point *point; | |
283 | ||
284 | if (!x_map || !y_map) | |
285 | return 0; | |
286 | ||
287 | *x1 = *y1 = *x2 = *y2 = 0; | |
288 | ||
289 | prev_bit = 0; | |
290 | point = &x_low; | |
291 | for (i = 0; x_map != 0; i++, x_map >>= 1) { | |
292 | bit = x_map & 1; | |
293 | if (bit) { | |
294 | if (!prev_bit) { | |
295 | point->start_bit = i; | |
296 | fingers_x++; | |
297 | } | |
298 | point->num_bits++; | |
299 | } else { | |
300 | if (prev_bit) | |
301 | point = &x_high; | |
302 | else | |
303 | point->num_bits = 0; | |
304 | } | |
305 | prev_bit = bit; | |
306 | } | |
307 | ||
308 | /* | |
309 | * y bitmap is reversed for what we need (lower positions are in | |
310 | * higher bits), so we process from the top end. | |
311 | */ | |
312 | y_map = y_map << (sizeof(y_map) * BITS_PER_BYTE - ALPS_BITMAP_Y_BITS); | |
313 | prev_bit = 0; | |
314 | point = &y_low; | |
315 | for (i = 0; y_map != 0; i++, y_map <<= 1) { | |
316 | bit = y_map & (1 << (sizeof(y_map) * BITS_PER_BYTE - 1)); | |
317 | if (bit) { | |
318 | if (!prev_bit) { | |
319 | point->start_bit = i; | |
320 | fingers_y++; | |
321 | } | |
322 | point->num_bits++; | |
323 | } else { | |
324 | if (prev_bit) | |
325 | point = &y_high; | |
326 | else | |
327 | point->num_bits = 0; | |
328 | } | |
329 | prev_bit = bit; | |
330 | } | |
331 | ||
332 | /* | |
333 | * Fingers can overlap, so we use the maximum count of fingers | |
334 | * on either axis as the finger count. | |
335 | */ | |
336 | fingers = max(fingers_x, fingers_y); | |
337 | ||
338 | /* | |
339 | * If total fingers is > 1 but either axis reports only a single | |
340 | * contact, we have overlapping or adjacent fingers. For the | |
341 | * purposes of creating a bounding box, divide the single contact | |
342 | * (roughly) equally between the two points. | |
343 | */ | |
344 | if (fingers > 1) { | |
345 | if (fingers_x == 1) { | |
346 | i = x_low.num_bits / 2; | |
347 | x_low.num_bits = x_low.num_bits - i; | |
348 | x_high.start_bit = x_low.start_bit + i; | |
349 | x_high.num_bits = max(i, 1); | |
350 | } else if (fingers_y == 1) { | |
351 | i = y_low.num_bits / 2; | |
352 | y_low.num_bits = y_low.num_bits - i; | |
353 | y_high.start_bit = y_low.start_bit + i; | |
354 | y_high.num_bits = max(i, 1); | |
355 | } | |
356 | } | |
357 | ||
358 | *x1 = (ALPS_V3_X_MAX * (2 * x_low.start_bit + x_low.num_bits - 1)) / | |
359 | (2 * (ALPS_BITMAP_X_BITS - 1)); | |
360 | *y1 = (ALPS_V3_Y_MAX * (2 * y_low.start_bit + y_low.num_bits - 1)) / | |
361 | (2 * (ALPS_BITMAP_Y_BITS - 1)); | |
362 | ||
363 | if (fingers > 1) { | |
364 | *x2 = (ALPS_V3_X_MAX * (2 * x_high.start_bit + x_high.num_bits - 1)) / | |
365 | (2 * (ALPS_BITMAP_X_BITS - 1)); | |
366 | *y2 = (ALPS_V3_Y_MAX * (2 * y_high.start_bit + y_high.num_bits - 1)) / | |
367 | (2 * (ALPS_BITMAP_Y_BITS - 1)); | |
368 | } | |
369 | ||
370 | return fingers; | |
371 | } | |
372 | ||
373 | static void alps_set_slot(struct input_dev *dev, int slot, bool active, | |
374 | int x, int y) | |
375 | { | |
376 | input_mt_slot(dev, slot); | |
377 | input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); | |
378 | if (active) { | |
379 | input_report_abs(dev, ABS_MT_POSITION_X, x); | |
380 | input_report_abs(dev, ABS_MT_POSITION_Y, y); | |
381 | } | |
382 | } | |
383 | ||
384 | static void alps_report_semi_mt_data(struct input_dev *dev, int num_fingers, | |
385 | int x1, int y1, int x2, int y2) | |
386 | { | |
387 | alps_set_slot(dev, 0, num_fingers != 0, x1, y1); | |
388 | alps_set_slot(dev, 1, num_fingers == 2, x2, y2); | |
389 | } | |
390 | ||
25bded7c SF |
391 | static void alps_process_trackstick_packet_v3(struct psmouse *psmouse) |
392 | { | |
393 | struct alps_data *priv = psmouse->private; | |
394 | unsigned char *packet = psmouse->packet; | |
395 | struct input_dev *dev = priv->dev2; | |
396 | int x, y, z, left, right, middle; | |
397 | ||
398 | /* Sanity check packet */ | |
399 | if (!(packet[0] & 0x40)) { | |
400 | psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n"); | |
401 | return; | |
402 | } | |
403 | ||
404 | /* | |
405 | * There's a special packet that seems to indicate the end | |
406 | * of a stream of trackstick data. Filter these out. | |
407 | */ | |
408 | if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f) | |
409 | return; | |
410 | ||
411 | x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f)); | |
412 | y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f)); | |
413 | z = (packet[4] & 0x7c) >> 2; | |
414 | ||
415 | /* | |
416 | * The x and y values tend to be quite large, and when used | |
417 | * alone the trackstick is difficult to use. Scale them down | |
418 | * to compensate. | |
419 | */ | |
420 | x /= 8; | |
421 | y /= 8; | |
422 | ||
423 | input_report_rel(dev, REL_X, x); | |
424 | input_report_rel(dev, REL_Y, -y); | |
425 | ||
426 | /* | |
427 | * Most ALPS models report the trackstick buttons in the touchpad | |
428 | * packets, but a few report them here. No reliable way has been | |
429 | * found to differentiate between the models upfront, so we enable | |
430 | * the quirk in response to seeing a button press in the trackstick | |
431 | * packet. | |
432 | */ | |
433 | left = packet[3] & 0x01; | |
434 | right = packet[3] & 0x02; | |
435 | middle = packet[3] & 0x04; | |
436 | ||
437 | if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) && | |
438 | (left || right || middle)) | |
439 | priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS; | |
440 | ||
441 | if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) { | |
442 | input_report_key(dev, BTN_LEFT, left); | |
443 | input_report_key(dev, BTN_RIGHT, right); | |
444 | input_report_key(dev, BTN_MIDDLE, middle); | |
445 | } | |
446 | ||
447 | input_sync(dev); | |
448 | return; | |
449 | } | |
450 | ||
451 | static void alps_process_touchpad_packet_v3(struct psmouse *psmouse) | |
452 | { | |
453 | struct alps_data *priv = psmouse->private; | |
454 | unsigned char *packet = psmouse->packet; | |
455 | struct input_dev *dev = psmouse->dev; | |
456 | struct input_dev *dev2 = priv->dev2; | |
457 | int x, y, z; | |
458 | int left, right, middle; | |
01ce661f SF |
459 | int x1 = 0, y1 = 0, x2 = 0, y2 = 0; |
460 | int fingers = 0, bmap_fingers; | |
461 | unsigned int x_bitmap, y_bitmap; | |
25bded7c SF |
462 | |
463 | /* | |
01ce661f SF |
464 | * There's no single feature of touchpad position and bitmap packets |
465 | * that can be used to distinguish between them. We rely on the fact | |
466 | * that a bitmap packet should always follow a position packet with | |
467 | * bit 6 of packet[4] set. | |
25bded7c SF |
468 | */ |
469 | if (priv->multi_packet) { | |
25bded7c SF |
470 | /* |
471 | * Sometimes a position packet will indicate a multi-packet | |
472 | * sequence, but then what follows is another position | |
473 | * packet. Check for this, and when it happens process the | |
474 | * position packet as usual. | |
475 | */ | |
476 | if (packet[0] & 0x40) { | |
01ce661f SF |
477 | fingers = (packet[5] & 0x3) + 1; |
478 | x_bitmap = ((packet[4] & 0x7e) << 8) | | |
479 | ((packet[1] & 0x7f) << 2) | | |
480 | ((packet[0] & 0x30) >> 4); | |
481 | y_bitmap = ((packet[3] & 0x70) << 4) | | |
482 | ((packet[2] & 0x7f) << 1) | | |
483 | (packet[4] & 0x01); | |
484 | ||
485 | bmap_fingers = alps_process_bitmap(x_bitmap, y_bitmap, | |
486 | &x1, &y1, &x2, &y2); | |
487 | ||
25bded7c | 488 | /* |
01ce661f SF |
489 | * We shouldn't report more than one finger if |
490 | * we don't have two coordinates. | |
25bded7c | 491 | */ |
01ce661f SF |
492 | if (fingers > 1 && bmap_fingers < 2) |
493 | fingers = bmap_fingers; | |
494 | ||
495 | /* Now process position packet */ | |
496 | packet = priv->multi_data; | |
497 | } else { | |
498 | priv->multi_packet = 0; | |
25bded7c SF |
499 | } |
500 | } | |
501 | ||
01ce661f SF |
502 | /* |
503 | * Bit 6 of byte 0 is not usually set in position packets. The only | |
504 | * times it seems to be set is in situations where the data is | |
505 | * suspect anyway, e.g. a palm resting flat on the touchpad. Given | |
506 | * this combined with the fact that this bit is useful for filtering | |
507 | * out misidentified bitmap packets, we reject anything with this | |
508 | * bit set. | |
509 | */ | |
510 | if (packet[0] & 0x40) | |
511 | return; | |
512 | ||
513 | if (!priv->multi_packet && (packet[4] & 0x40)) { | |
25bded7c | 514 | priv->multi_packet = 1; |
01ce661f SF |
515 | memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); |
516 | return; | |
517 | } | |
518 | ||
519 | priv->multi_packet = 0; | |
25bded7c SF |
520 | |
521 | left = packet[3] & 0x01; | |
522 | right = packet[3] & 0x02; | |
523 | middle = packet[3] & 0x04; | |
524 | ||
525 | x = ((packet[1] & 0x7f) << 4) | ((packet[4] & 0x30) >> 2) | | |
526 | ((packet[0] & 0x30) >> 4); | |
527 | y = ((packet[2] & 0x7f) << 4) | (packet[4] & 0x0f); | |
528 | z = packet[5] & 0x7f; | |
529 | ||
530 | /* | |
531 | * Sometimes the hardware sends a single packet with z = 0 | |
532 | * in the middle of a stream. Real releases generate packets | |
533 | * with x, y, and z all zero, so these seem to be flukes. | |
534 | * Ignore them. | |
535 | */ | |
536 | if (x && y && !z) | |
537 | return; | |
538 | ||
01ce661f SF |
539 | /* |
540 | * If we don't have MT data or the bitmaps were empty, we have | |
541 | * to rely on ST data. | |
542 | */ | |
543 | if (!fingers) { | |
544 | x1 = x; | |
545 | y1 = y; | |
546 | fingers = z > 0 ? 1 : 0; | |
547 | } | |
548 | ||
25bded7c SF |
549 | if (z >= 64) |
550 | input_report_key(dev, BTN_TOUCH, 1); | |
551 | else | |
552 | input_report_key(dev, BTN_TOUCH, 0); | |
553 | ||
01ce661f SF |
554 | alps_report_semi_mt_data(dev, fingers, x1, y1, x2, y2); |
555 | ||
616575c2 | 556 | input_mt_report_finger_count(dev, fingers); |
01ce661f SF |
557 | |
558 | input_report_key(dev, BTN_LEFT, left); | |
559 | input_report_key(dev, BTN_RIGHT, right); | |
560 | input_report_key(dev, BTN_MIDDLE, middle); | |
561 | ||
25bded7c SF |
562 | if (z > 0) { |
563 | input_report_abs(dev, ABS_X, x); | |
564 | input_report_abs(dev, ABS_Y, y); | |
565 | } | |
566 | input_report_abs(dev, ABS_PRESSURE, z); | |
567 | ||
25bded7c SF |
568 | input_sync(dev); |
569 | ||
570 | if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) { | |
571 | left = packet[3] & 0x10; | |
572 | right = packet[3] & 0x20; | |
573 | middle = packet[3] & 0x40; | |
574 | ||
575 | input_report_key(dev2, BTN_LEFT, left); | |
576 | input_report_key(dev2, BTN_RIGHT, right); | |
577 | input_report_key(dev2, BTN_MIDDLE, middle); | |
578 | input_sync(dev2); | |
579 | } | |
580 | } | |
581 | ||
582 | static void alps_process_packet_v3(struct psmouse *psmouse) | |
583 | { | |
584 | unsigned char *packet = psmouse->packet; | |
585 | ||
586 | /* | |
587 | * v3 protocol packets come in three types, two representing | |
588 | * touchpad data and one representing trackstick data. | |
589 | * Trackstick packets seem to be distinguished by always | |
590 | * having 0x3f in the last byte. This value has never been | |
591 | * observed in the last byte of either of the other types | |
592 | * of packets. | |
593 | */ | |
594 | if (packet[5] == 0x3f) { | |
595 | alps_process_trackstick_packet_v3(psmouse); | |
596 | return; | |
597 | } | |
598 | ||
599 | alps_process_touchpad_packet_v3(psmouse); | |
600 | } | |
601 | ||
602 | static void alps_process_packet_v4(struct psmouse *psmouse) | |
603 | { | |
3b7e09fa | 604 | struct alps_data *priv = psmouse->private; |
25bded7c SF |
605 | unsigned char *packet = psmouse->packet; |
606 | struct input_dev *dev = psmouse->dev; | |
3b7e09fa | 607 | int offset; |
25bded7c SF |
608 | int x, y, z; |
609 | int left, right; | |
3b7e09fa GP |
610 | int x1, y1, x2, y2; |
611 | int fingers = 0; | |
612 | unsigned int x_bitmap, y_bitmap; | |
613 | ||
614 | /* | |
615 | * v4 has a 6-byte encoding for bitmap data, but this data is | |
616 | * broken up between 3 normal packets. Use priv->multi_packet to | |
617 | * track our position in the bitmap packet. | |
618 | */ | |
619 | if (packet[6] & 0x40) { | |
620 | /* sync, reset position */ | |
621 | priv->multi_packet = 0; | |
622 | } | |
623 | ||
624 | if (WARN_ON_ONCE(priv->multi_packet > 2)) | |
625 | return; | |
626 | ||
627 | offset = 2 * priv->multi_packet; | |
628 | priv->multi_data[offset] = packet[6]; | |
629 | priv->multi_data[offset + 1] = packet[7]; | |
630 | ||
631 | if (++priv->multi_packet > 2) { | |
632 | priv->multi_packet = 0; | |
633 | ||
634 | x_bitmap = ((priv->multi_data[2] & 0x1f) << 10) | | |
635 | ((priv->multi_data[3] & 0x60) << 3) | | |
636 | ((priv->multi_data[0] & 0x3f) << 2) | | |
637 | ((priv->multi_data[1] & 0x60) >> 5); | |
638 | y_bitmap = ((priv->multi_data[5] & 0x01) << 10) | | |
639 | ((priv->multi_data[3] & 0x1f) << 5) | | |
640 | (priv->multi_data[1] & 0x1f); | |
641 | ||
642 | fingers = alps_process_bitmap(x_bitmap, y_bitmap, | |
643 | &x1, &y1, &x2, &y2); | |
644 | ||
645 | /* Store MT data.*/ | |
646 | priv->fingers = fingers; | |
647 | priv->x1 = x1; | |
648 | priv->x2 = x2; | |
649 | priv->y1 = y1; | |
650 | priv->y2 = y2; | |
651 | } | |
25bded7c SF |
652 | |
653 | left = packet[4] & 0x01; | |
654 | right = packet[4] & 0x02; | |
655 | ||
656 | x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) | | |
657 | ((packet[0] & 0x30) >> 4); | |
658 | y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f); | |
659 | z = packet[5] & 0x7f; | |
660 | ||
3b7e09fa GP |
661 | /* |
662 | * If there were no contacts in the bitmap, use ST | |
663 | * points in MT reports. | |
664 | * If there were two contacts or more, report MT data. | |
665 | */ | |
666 | if (priv->fingers < 2) { | |
667 | x1 = x; | |
668 | y1 = y; | |
669 | fingers = z > 0 ? 1 : 0; | |
670 | } else { | |
671 | fingers = priv->fingers; | |
672 | x1 = priv->x1; | |
673 | x2 = priv->x2; | |
674 | y1 = priv->y1; | |
675 | y2 = priv->y2; | |
676 | } | |
677 | ||
25bded7c SF |
678 | if (z >= 64) |
679 | input_report_key(dev, BTN_TOUCH, 1); | |
680 | else | |
681 | input_report_key(dev, BTN_TOUCH, 0); | |
682 | ||
3b7e09fa GP |
683 | alps_report_semi_mt_data(dev, fingers, x1, y1, x2, y2); |
684 | ||
616575c2 | 685 | input_mt_report_finger_count(dev, fingers); |
3b7e09fa GP |
686 | |
687 | input_report_key(dev, BTN_LEFT, left); | |
688 | input_report_key(dev, BTN_RIGHT, right); | |
689 | ||
25bded7c SF |
690 | if (z > 0) { |
691 | input_report_abs(dev, ABS_X, x); | |
692 | input_report_abs(dev, ABS_Y, y); | |
693 | } | |
694 | input_report_abs(dev, ABS_PRESSURE, z); | |
695 | ||
25bded7c SF |
696 | input_sync(dev); |
697 | } | |
698 | ||
699 | static void alps_process_packet(struct psmouse *psmouse) | |
700 | { | |
701 | struct alps_data *priv = psmouse->private; | |
702 | const struct alps_model_info *model = priv->i; | |
703 | ||
704 | switch (model->proto_version) { | |
705 | case ALPS_PROTO_V1: | |
706 | case ALPS_PROTO_V2: | |
707 | alps_process_packet_v1_v2(psmouse); | |
708 | break; | |
709 | case ALPS_PROTO_V3: | |
710 | alps_process_packet_v3(psmouse); | |
711 | break; | |
712 | case ALPS_PROTO_V4: | |
713 | alps_process_packet_v4(psmouse); | |
714 | break; | |
715 | } | |
716 | } | |
717 | ||
1d9f2626 SK |
718 | static void alps_report_bare_ps2_packet(struct psmouse *psmouse, |
719 | unsigned char packet[], | |
720 | bool report_buttons) | |
721 | { | |
722 | struct alps_data *priv = psmouse->private; | |
723 | struct input_dev *dev2 = priv->dev2; | |
724 | ||
725 | if (report_buttons) | |
726 | alps_report_buttons(psmouse, dev2, psmouse->dev, | |
727 | packet[0] & 1, packet[0] & 2, packet[0] & 4); | |
728 | ||
729 | input_report_rel(dev2, REL_X, | |
730 | packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0); | |
731 | input_report_rel(dev2, REL_Y, | |
732 | packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0); | |
733 | ||
734 | input_sync(dev2); | |
735 | } | |
736 | ||
737 | static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse) | |
738 | { | |
739 | struct alps_data *priv = psmouse->private; | |
740 | ||
741 | if (psmouse->pktcnt < 6) | |
742 | return PSMOUSE_GOOD_DATA; | |
743 | ||
744 | if (psmouse->pktcnt == 6) { | |
745 | /* | |
746 | * Start a timer to flush the packet if it ends up last | |
747 | * 6-byte packet in the stream. Timer needs to fire | |
748 | * psmouse core times out itself. 20 ms should be enough | |
749 | * to decide if we are getting more data or not. | |
750 | */ | |
751 | mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20)); | |
752 | return PSMOUSE_GOOD_DATA; | |
753 | } | |
754 | ||
755 | del_timer(&priv->timer); | |
756 | ||
757 | if (psmouse->packet[6] & 0x80) { | |
758 | ||
759 | /* | |
760 | * Highest bit is set - that means we either had | |
761 | * complete ALPS packet and this is start of the | |
762 | * next packet or we got garbage. | |
763 | */ | |
764 | ||
765 | if (((psmouse->packet[3] | | |
766 | psmouse->packet[4] | | |
767 | psmouse->packet[5]) & 0x80) || | |
768 | (!alps_is_valid_first_byte(priv->i, psmouse->packet[6]))) { | |
b5d21704 | 769 | psmouse_dbg(psmouse, |
3b112923 AS |
770 | "refusing packet %4ph (suspected interleaved ps/2)\n", |
771 | psmouse->packet + 3); | |
1d9f2626 SK |
772 | return PSMOUSE_BAD_DATA; |
773 | } | |
774 | ||
775 | alps_process_packet(psmouse); | |
776 | ||
777 | /* Continue with the next packet */ | |
778 | psmouse->packet[0] = psmouse->packet[6]; | |
779 | psmouse->pktcnt = 1; | |
780 | ||
781 | } else { | |
782 | ||
783 | /* | |
784 | * High bit is 0 - that means that we indeed got a PS/2 | |
785 | * packet in the middle of ALPS packet. | |
786 | * | |
787 | * There is also possibility that we got 6-byte ALPS | |
788 | * packet followed by 3-byte packet from trackpoint. We | |
789 | * can not distinguish between these 2 scenarios but | |
b5d21704 | 790 | * because the latter is unlikely to happen in course of |
1d9f2626 SK |
791 | * normal operation (user would need to press all |
792 | * buttons on the pad and start moving trackpoint | |
793 | * without touching the pad surface) we assume former. | |
794 | * Even if we are wrong the wost thing that would happen | |
795 | * the cursor would jump but we should not get protocol | |
b5d21704 | 796 | * de-synchronization. |
1d9f2626 SK |
797 | */ |
798 | ||
799 | alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3], | |
800 | false); | |
801 | ||
802 | /* | |
803 | * Continue with the standard ALPS protocol handling, | |
804 | * but make sure we won't process it as an interleaved | |
805 | * packet again, which may happen if all buttons are | |
806 | * pressed. To avoid this let's reset the 4th bit which | |
807 | * is normally 1. | |
808 | */ | |
809 | psmouse->packet[3] = psmouse->packet[6] & 0xf7; | |
810 | psmouse->pktcnt = 4; | |
811 | } | |
812 | ||
813 | return PSMOUSE_GOOD_DATA; | |
814 | } | |
815 | ||
816 | static void alps_flush_packet(unsigned long data) | |
817 | { | |
818 | struct psmouse *psmouse = (struct psmouse *)data; | |
819 | ||
820 | serio_pause_rx(psmouse->ps2dev.serio); | |
821 | ||
b46615fe | 822 | if (psmouse->pktcnt == psmouse->pktsize) { |
1d9f2626 SK |
823 | |
824 | /* | |
825 | * We did not any more data in reasonable amount of time. | |
826 | * Validate the last 3 bytes and process as a standard | |
827 | * ALPS packet. | |
828 | */ | |
829 | if ((psmouse->packet[3] | | |
830 | psmouse->packet[4] | | |
831 | psmouse->packet[5]) & 0x80) { | |
b5d21704 | 832 | psmouse_dbg(psmouse, |
3b112923 AS |
833 | "refusing packet %3ph (suspected interleaved ps/2)\n", |
834 | psmouse->packet + 3); | |
1d9f2626 SK |
835 | } else { |
836 | alps_process_packet(psmouse); | |
837 | } | |
838 | psmouse->pktcnt = 0; | |
839 | } | |
840 | ||
841 | serio_continue_rx(psmouse->ps2dev.serio); | |
842 | } | |
843 | ||
7d12e780 | 844 | static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) |
1da177e4 LT |
845 | { |
846 | struct alps_data *priv = psmouse->private; | |
1d9f2626 | 847 | const struct alps_model_info *model = priv->i; |
1da177e4 LT |
848 | |
849 | if ((psmouse->packet[0] & 0xc8) == 0x08) { /* PS/2 packet */ | |
850 | if (psmouse->pktcnt == 3) { | |
1d9f2626 SK |
851 | alps_report_bare_ps2_packet(psmouse, psmouse->packet, |
852 | true); | |
1da177e4 LT |
853 | return PSMOUSE_FULL_PACKET; |
854 | } | |
855 | return PSMOUSE_GOOD_DATA; | |
856 | } | |
857 | ||
1d9f2626 SK |
858 | /* Check for PS/2 packet stuffed in the middle of ALPS packet. */ |
859 | ||
860 | if ((model->flags & ALPS_PS2_INTERLEAVED) && | |
861 | psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) { | |
862 | return alps_handle_interleaved_ps2(psmouse); | |
863 | } | |
864 | ||
865 | if (!alps_is_valid_first_byte(model, psmouse->packet[0])) { | |
b5d21704 DT |
866 | psmouse_dbg(psmouse, |
867 | "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n", | |
868 | psmouse->packet[0], model->mask0, model->byte0); | |
1da177e4 | 869 | return PSMOUSE_BAD_DATA; |
1d9f2626 | 870 | } |
1da177e4 | 871 | |
b46615fe SF |
872 | /* Bytes 2 - pktsize should have 0 in the highest bit */ |
873 | if (psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize && | |
1d9f2626 | 874 | (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) { |
b5d21704 DT |
875 | psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", |
876 | psmouse->pktcnt - 1, | |
877 | psmouse->packet[psmouse->pktcnt - 1]); | |
1da177e4 | 878 | return PSMOUSE_BAD_DATA; |
1d9f2626 | 879 | } |
1da177e4 | 880 | |
b46615fe | 881 | if (psmouse->pktcnt == psmouse->pktsize) { |
7d12e780 | 882 | alps_process_packet(psmouse); |
1da177e4 LT |
883 | return PSMOUSE_FULL_PACKET; |
884 | } | |
885 | ||
886 | return PSMOUSE_GOOD_DATA; | |
887 | } | |
888 | ||
25bded7c SF |
889 | static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble) |
890 | { | |
891 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
892 | struct alps_data *priv = psmouse->private; | |
893 | int command; | |
894 | unsigned char *param; | |
895 | unsigned char dummy[4]; | |
896 | ||
897 | BUG_ON(nibble > 0xf); | |
898 | ||
899 | command = priv->nibble_commands[nibble].command; | |
900 | param = (command & 0x0f00) ? | |
901 | dummy : (unsigned char *)&priv->nibble_commands[nibble].data; | |
902 | ||
903 | if (ps2_command(ps2dev, param, command)) | |
904 | return -1; | |
905 | ||
906 | return 0; | |
907 | } | |
908 | ||
909 | static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr) | |
910 | { | |
911 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
912 | struct alps_data *priv = psmouse->private; | |
913 | int i, nibble; | |
914 | ||
915 | if (ps2_command(ps2dev, NULL, priv->addr_command)) | |
916 | return -1; | |
917 | ||
918 | for (i = 12; i >= 0; i -= 4) { | |
919 | nibble = (addr >> i) & 0xf; | |
920 | if (alps_command_mode_send_nibble(psmouse, nibble)) | |
921 | return -1; | |
922 | } | |
923 | ||
924 | return 0; | |
925 | } | |
926 | ||
927 | static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr) | |
928 | { | |
929 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
930 | unsigned char param[4]; | |
931 | ||
932 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) | |
933 | return -1; | |
934 | ||
935 | /* | |
936 | * The address being read is returned in the first two bytes | |
937 | * of the result. Check that this address matches the expected | |
938 | * address. | |
939 | */ | |
940 | if (addr != ((param[0] << 8) | param[1])) | |
941 | return -1; | |
942 | ||
943 | return param[2]; | |
944 | } | |
945 | ||
946 | static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr) | |
947 | { | |
948 | if (alps_command_mode_set_addr(psmouse, addr)) | |
949 | return -1; | |
950 | return __alps_command_mode_read_reg(psmouse, addr); | |
951 | } | |
952 | ||
953 | static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value) | |
954 | { | |
955 | if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf)) | |
956 | return -1; | |
957 | if (alps_command_mode_send_nibble(psmouse, value & 0xf)) | |
958 | return -1; | |
959 | return 0; | |
960 | } | |
961 | ||
962 | static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr, | |
963 | u8 value) | |
964 | { | |
965 | if (alps_command_mode_set_addr(psmouse, addr)) | |
966 | return -1; | |
967 | return __alps_command_mode_write_reg(psmouse, value); | |
968 | } | |
969 | ||
970 | static int alps_enter_command_mode(struct psmouse *psmouse, | |
971 | unsigned char *resp) | |
972 | { | |
973 | unsigned char param[4]; | |
974 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
975 | ||
976 | if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || | |
977 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || | |
978 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || | |
979 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) { | |
980 | psmouse_err(psmouse, "failed to enter command mode\n"); | |
981 | return -1; | |
982 | } | |
983 | ||
984 | if (param[0] != 0x88 && param[1] != 0x07) { | |
985 | psmouse_dbg(psmouse, | |
986 | "unknown response while entering command mode: %2.2x %2.2x %2.2x\n", | |
987 | param[0], param[1], param[2]); | |
988 | return -1; | |
989 | } | |
990 | ||
991 | if (resp) | |
992 | *resp = param[2]; | |
993 | return 0; | |
994 | } | |
995 | ||
996 | static inline int alps_exit_command_mode(struct psmouse *psmouse) | |
997 | { | |
998 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
999 | if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) | |
1000 | return -1; | |
1001 | return 0; | |
1002 | } | |
1003 | ||
e38de678 | 1004 | static const struct alps_model_info *alps_get_model(struct psmouse *psmouse, int *version) |
1da177e4 LT |
1005 | { |
1006 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
e38de678 | 1007 | static const unsigned char rates[] = { 0, 10, 20, 40, 60, 80, 100, 200 }; |
1da177e4 | 1008 | unsigned char param[4]; |
25bded7c | 1009 | const struct alps_model_info *model = NULL; |
1da177e4 LT |
1010 | int i; |
1011 | ||
1012 | /* | |
1013 | * First try "E6 report". | |
99c90ab3 AI |
1014 | * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed. |
1015 | * The bits 0-2 of the first byte will be 1s if some buttons are | |
1016 | * pressed. | |
1da177e4 LT |
1017 | */ |
1018 | param[0] = 0; | |
1019 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES) || | |
1020 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || | |
1021 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || | |
1022 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11)) | |
1023 | return NULL; | |
1024 | ||
1025 | param[0] = param[1] = param[2] = 0xff; | |
1026 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) | |
1027 | return NULL; | |
1028 | ||
b5d21704 DT |
1029 | psmouse_dbg(psmouse, "E6 report: %2.2x %2.2x %2.2x", |
1030 | param[0], param[1], param[2]); | |
1da177e4 | 1031 | |
99c90ab3 AI |
1032 | if ((param[0] & 0xf8) != 0 || param[1] != 0 || |
1033 | (param[2] != 10 && param[2] != 100)) | |
1da177e4 LT |
1034 | return NULL; |
1035 | ||
1036 | /* | |
1037 | * Now try "E7 report". Allowed responses are in | |
1038 | * alps_model_data[].signature | |
1039 | */ | |
1040 | param[0] = 0; | |
1041 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES) || | |
1042 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || | |
1043 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || | |
1044 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21)) | |
1045 | return NULL; | |
1046 | ||
1047 | param[0] = param[1] = param[2] = 0xff; | |
1048 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) | |
1049 | return NULL; | |
1050 | ||
b5d21704 DT |
1051 | psmouse_dbg(psmouse, "E7 report: %2.2x %2.2x %2.2x", |
1052 | param[0], param[1], param[2]); | |
1da177e4 | 1053 | |
1e0c5b12 DT |
1054 | if (version) { |
1055 | for (i = 0; i < ARRAY_SIZE(rates) && param[2] != rates[i]; i++) | |
1056 | /* empty */; | |
1057 | *version = (param[0] << 8) | (param[1] << 4) | i; | |
1058 | } | |
1da177e4 | 1059 | |
25bded7c | 1060 | for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) { |
1e0c5b12 | 1061 | if (!memcmp(param, alps_model_data[i].signature, |
25bded7c SF |
1062 | sizeof(alps_model_data[i].signature))) { |
1063 | model = alps_model_data + i; | |
1064 | break; | |
1065 | } | |
1066 | } | |
1da177e4 | 1067 | |
25bded7c SF |
1068 | if (model && model->proto_version > ALPS_PROTO_V2) { |
1069 | /* | |
1070 | * Need to check command mode response to identify | |
1071 | * model | |
1072 | */ | |
1073 | model = NULL; | |
1074 | if (alps_enter_command_mode(psmouse, param)) { | |
1075 | psmouse_warn(psmouse, | |
1076 | "touchpad failed to enter command mode\n"); | |
1077 | } else { | |
1078 | for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) { | |
1079 | if (alps_model_data[i].proto_version > ALPS_PROTO_V2 && | |
1080 | alps_model_data[i].command_mode_resp == param[0]) { | |
1081 | model = alps_model_data + i; | |
1082 | break; | |
1083 | } | |
1084 | } | |
1085 | alps_exit_command_mode(psmouse); | |
1086 | ||
1087 | if (!model) | |
1088 | psmouse_dbg(psmouse, | |
1089 | "Unknown command mode response %2.2x\n", | |
1090 | param[0]); | |
1091 | } | |
1092 | } | |
1093 | ||
1094 | return model; | |
1da177e4 LT |
1095 | } |
1096 | ||
1097 | /* | |
1098 | * For DualPoint devices select the device that should respond to | |
1099 | * subsequent commands. It looks like glidepad is behind stickpointer, | |
1100 | * I'd thought it would be other way around... | |
1101 | */ | |
25bded7c | 1102 | static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable) |
1da177e4 LT |
1103 | { |
1104 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
1da177e4 LT |
1105 | int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11; |
1106 | ||
1107 | if (ps2_command(ps2dev, NULL, cmd) || | |
1108 | ps2_command(ps2dev, NULL, cmd) || | |
1109 | ps2_command(ps2dev, NULL, cmd) || | |
1110 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) | |
1111 | return -1; | |
1112 | ||
1113 | /* we may get 3 more bytes, just ignore them */ | |
c611763d | 1114 | ps2_drain(ps2dev, 3, 100); |
1da177e4 LT |
1115 | |
1116 | return 0; | |
1117 | } | |
1118 | ||
25bded7c | 1119 | static int alps_absolute_mode_v1_v2(struct psmouse *psmouse) |
1da177e4 LT |
1120 | { |
1121 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
1122 | ||
1123 | /* Try ALPS magic knock - 4 disable before enable */ | |
1124 | if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || | |
1125 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || | |
1126 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || | |
1127 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || | |
1128 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) | |
1129 | return -1; | |
1130 | ||
1131 | /* | |
1132 | * Switch mouse to poll (remote) mode so motion data will not | |
1133 | * get in our way | |
1134 | */ | |
1135 | return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL); | |
1136 | } | |
1137 | ||
1138 | static int alps_get_status(struct psmouse *psmouse, char *param) | |
1139 | { | |
1140 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
1141 | ||
1142 | /* Get status: 0xF5 0xF5 0xF5 0xE9 */ | |
1143 | if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || | |
1144 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || | |
1145 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || | |
1146 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) | |
1147 | return -1; | |
1148 | ||
b5d21704 DT |
1149 | psmouse_dbg(psmouse, "Status: %2.2x %2.2x %2.2x", |
1150 | param[0], param[1], param[2]); | |
1da177e4 LT |
1151 | |
1152 | return 0; | |
1153 | } | |
1154 | ||
1155 | /* | |
1156 | * Turn touchpad tapping on or off. The sequences are: | |
1157 | * 0xE9 0xF5 0xF5 0xF3 0x0A to enable, | |
1158 | * 0xE9 0xF5 0xF5 0xE8 0x00 to disable. | |
1159 | * My guess that 0xE9 (GetInfo) is here as a sync point. | |
1160 | * For models that also have stickpointer (DualPoints) its tapping | |
1161 | * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but | |
1162 | * we don't fiddle with it. | |
1163 | */ | |
1164 | static int alps_tap_mode(struct psmouse *psmouse, int enable) | |
1165 | { | |
1166 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
1167 | int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES; | |
1168 | unsigned char tap_arg = enable ? 0x0A : 0x00; | |
1169 | unsigned char param[4]; | |
1170 | ||
1171 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) || | |
1172 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || | |
1173 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || | |
1174 | ps2_command(ps2dev, &tap_arg, cmd)) | |
1175 | return -1; | |
1176 | ||
1177 | if (alps_get_status(psmouse, param)) | |
1178 | return -1; | |
1179 | ||
1180 | return 0; | |
1181 | } | |
1182 | ||
f0d5c6f4 DT |
1183 | /* |
1184 | * alps_poll() - poll the touchpad for current motion packet. | |
1185 | * Used in resync. | |
1186 | */ | |
1187 | static int alps_poll(struct psmouse *psmouse) | |
1188 | { | |
1189 | struct alps_data *priv = psmouse->private; | |
b46615fe | 1190 | unsigned char buf[sizeof(psmouse->packet)]; |
b7802c5c | 1191 | bool poll_failed; |
f0d5c6f4 DT |
1192 | |
1193 | if (priv->i->flags & ALPS_PASS) | |
25bded7c | 1194 | alps_passthrough_mode_v2(psmouse, true); |
f0d5c6f4 DT |
1195 | |
1196 | poll_failed = ps2_command(&psmouse->ps2dev, buf, | |
1197 | PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0; | |
1198 | ||
1199 | if (priv->i->flags & ALPS_PASS) | |
25bded7c | 1200 | alps_passthrough_mode_v2(psmouse, false); |
f0d5c6f4 DT |
1201 | |
1202 | if (poll_failed || (buf[0] & priv->i->mask0) != priv->i->byte0) | |
1203 | return -1; | |
1204 | ||
1205 | if ((psmouse->badbyte & 0xc8) == 0x08) { | |
1206 | /* | |
1207 | * Poll the track stick ... | |
1208 | */ | |
1209 | if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8))) | |
1210 | return -1; | |
1211 | } | |
1212 | ||
1213 | memcpy(psmouse->packet, buf, sizeof(buf)); | |
1214 | return 0; | |
1215 | } | |
1216 | ||
25bded7c | 1217 | static int alps_hw_init_v1_v2(struct psmouse *psmouse) |
1da177e4 LT |
1218 | { |
1219 | struct alps_data *priv = psmouse->private; | |
71bb21b6 | 1220 | const struct alps_model_info *model = priv->i; |
f3a5c73d | 1221 | |
71bb21b6 | 1222 | if ((model->flags & ALPS_PASS) && |
25bded7c | 1223 | alps_passthrough_mode_v2(psmouse, true)) { |
1da177e4 | 1224 | return -1; |
b7802c5c | 1225 | } |
1da177e4 | 1226 | |
b7802c5c | 1227 | if (alps_tap_mode(psmouse, true)) { |
b5d21704 | 1228 | psmouse_warn(psmouse, "Failed to enable hardware tapping\n"); |
1da177e4 | 1229 | return -1; |
963f626d | 1230 | } |
1da177e4 | 1231 | |
25bded7c | 1232 | if (alps_absolute_mode_v1_v2(psmouse)) { |
b5d21704 | 1233 | psmouse_err(psmouse, "Failed to enable absolute mode\n"); |
1da177e4 LT |
1234 | return -1; |
1235 | } | |
1236 | ||
71bb21b6 | 1237 | if ((model->flags & ALPS_PASS) && |
25bded7c | 1238 | alps_passthrough_mode_v2(psmouse, false)) { |
1da177e4 | 1239 | return -1; |
b7802c5c | 1240 | } |
1da177e4 | 1241 | |
1e0c5b12 DT |
1242 | /* ALPS needs stream mode, otherwise it won't report any data */ |
1243 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) { | |
b5d21704 | 1244 | psmouse_err(psmouse, "Failed to enable stream mode\n"); |
1e0c5b12 DT |
1245 | return -1; |
1246 | } | |
1247 | ||
1248 | return 0; | |
1249 | } | |
1250 | ||
25bded7c SF |
1251 | /* |
1252 | * Enable or disable passthrough mode to the trackstick. Must be in | |
1253 | * command mode when calling this function. | |
1254 | */ | |
1255 | static int alps_passthrough_mode_v3(struct psmouse *psmouse, bool enable) | |
1256 | { | |
1257 | int reg_val; | |
1258 | ||
1259 | reg_val = alps_command_mode_read_reg(psmouse, 0x0008); | |
1260 | if (reg_val == -1) | |
1261 | return -1; | |
1262 | ||
1263 | if (enable) | |
1264 | reg_val |= 0x01; | |
1265 | else | |
1266 | reg_val &= ~0x01; | |
1267 | ||
1268 | if (__alps_command_mode_write_reg(psmouse, reg_val)) | |
1269 | return -1; | |
1270 | ||
1271 | return 0; | |
1272 | } | |
1273 | ||
1274 | /* Must be in command mode when calling this function */ | |
1275 | static int alps_absolute_mode_v3(struct psmouse *psmouse) | |
1276 | { | |
1277 | int reg_val; | |
1278 | ||
1279 | reg_val = alps_command_mode_read_reg(psmouse, 0x0004); | |
1280 | if (reg_val == -1) | |
1281 | return -1; | |
1282 | ||
1283 | reg_val |= 0x06; | |
1284 | if (__alps_command_mode_write_reg(psmouse, reg_val)) | |
1285 | return -1; | |
1286 | ||
1287 | return 0; | |
1288 | } | |
1289 | ||
1290 | static int alps_hw_init_v3(struct psmouse *psmouse) | |
1291 | { | |
1292 | struct alps_data *priv = psmouse->private; | |
1293 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
1294 | int reg_val; | |
1295 | unsigned char param[4]; | |
1296 | ||
1297 | priv->nibble_commands = alps_v3_nibble_commands; | |
1298 | priv->addr_command = PSMOUSE_CMD_RESET_WRAP; | |
1299 | ||
1300 | if (alps_enter_command_mode(psmouse, NULL)) | |
1301 | goto error; | |
1302 | ||
1303 | /* Check for trackstick */ | |
1304 | reg_val = alps_command_mode_read_reg(psmouse, 0x0008); | |
1305 | if (reg_val == -1) | |
1306 | goto error; | |
1307 | if (reg_val & 0x80) { | |
1308 | if (alps_passthrough_mode_v3(psmouse, true)) | |
1309 | goto error; | |
1310 | if (alps_exit_command_mode(psmouse)) | |
1311 | goto error; | |
1312 | ||
1313 | /* | |
1314 | * E7 report for the trackstick | |
1315 | * | |
1316 | * There have been reports of failures to seem to trace back | |
1317 | * to the above trackstick check failing. When these occur | |
1318 | * this E7 report fails, so when that happens we continue | |
1319 | * with the assumption that there isn't a trackstick after | |
1320 | * all. | |
1321 | */ | |
1322 | param[0] = 0x64; | |
1323 | if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || | |
1324 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || | |
1325 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || | |
1326 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) { | |
1327 | psmouse_warn(psmouse, "trackstick E7 report failed\n"); | |
1328 | } else { | |
1329 | psmouse_dbg(psmouse, | |
1330 | "trackstick E7 report: %2.2x %2.2x %2.2x\n", | |
1331 | param[0], param[1], param[2]); | |
1332 | ||
1333 | /* | |
1334 | * Not sure what this does, but it is absolutely | |
1335 | * essential. Without it, the touchpad does not | |
1336 | * work at all and the trackstick just emits normal | |
1337 | * PS/2 packets. | |
1338 | */ | |
1339 | if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || | |
1340 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || | |
1341 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || | |
1342 | alps_command_mode_send_nibble(psmouse, 0x9) || | |
1343 | alps_command_mode_send_nibble(psmouse, 0x4)) { | |
1344 | psmouse_err(psmouse, | |
1345 | "Error sending magic E6 sequence\n"); | |
1346 | goto error_passthrough; | |
1347 | } | |
1348 | } | |
1349 | ||
1350 | if (alps_enter_command_mode(psmouse, NULL)) | |
1351 | goto error_passthrough; | |
1352 | if (alps_passthrough_mode_v3(psmouse, false)) | |
1353 | goto error; | |
1354 | } | |
1355 | ||
1356 | if (alps_absolute_mode_v3(psmouse)) { | |
1357 | psmouse_err(psmouse, "Failed to enter absolute mode\n"); | |
1358 | goto error; | |
1359 | } | |
1360 | ||
1361 | reg_val = alps_command_mode_read_reg(psmouse, 0x0006); | |
1362 | if (reg_val == -1) | |
1363 | goto error; | |
1364 | if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) | |
1365 | goto error; | |
1366 | ||
1367 | reg_val = alps_command_mode_read_reg(psmouse, 0x0007); | |
1368 | if (reg_val == -1) | |
1369 | goto error; | |
1370 | if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) | |
1371 | goto error; | |
1372 | ||
1373 | if (alps_command_mode_read_reg(psmouse, 0x0144) == -1) | |
1374 | goto error; | |
1375 | if (__alps_command_mode_write_reg(psmouse, 0x04)) | |
1376 | goto error; | |
1377 | ||
1378 | if (alps_command_mode_read_reg(psmouse, 0x0159) == -1) | |
1379 | goto error; | |
1380 | if (__alps_command_mode_write_reg(psmouse, 0x03)) | |
1381 | goto error; | |
1382 | ||
1383 | if (alps_command_mode_read_reg(psmouse, 0x0163) == -1) | |
1384 | goto error; | |
1385 | if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03)) | |
1386 | goto error; | |
1387 | ||
1388 | if (alps_command_mode_read_reg(psmouse, 0x0162) == -1) | |
1389 | goto error; | |
1390 | if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04)) | |
1391 | goto error; | |
1392 | ||
1393 | /* | |
1394 | * This ensures the trackstick packets are in the format | |
1395 | * supported by this driver. If bit 1 isn't set the packet | |
1396 | * format is different. | |
1397 | */ | |
1398 | if (alps_command_mode_write_reg(psmouse, 0x0008, 0x82)) | |
1399 | goto error; | |
1400 | ||
1401 | alps_exit_command_mode(psmouse); | |
1402 | ||
1403 | /* Set rate and enable data reporting */ | |
1404 | param[0] = 0x64; | |
1405 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || | |
1406 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { | |
1407 | psmouse_err(psmouse, "Failed to enable data reporting\n"); | |
1408 | return -1; | |
1409 | } | |
1410 | ||
1411 | return 0; | |
1412 | ||
1413 | error_passthrough: | |
1414 | /* Something failed while in passthrough mode, so try to get out */ | |
1415 | if (!alps_enter_command_mode(psmouse, NULL)) | |
1416 | alps_passthrough_mode_v3(psmouse, false); | |
1417 | error: | |
1418 | /* | |
1419 | * Leaving the touchpad in command mode will essentially render | |
1420 | * it unusable until the machine reboots, so exit it here just | |
1421 | * to be safe | |
1422 | */ | |
1423 | alps_exit_command_mode(psmouse); | |
1424 | return -1; | |
1425 | } | |
1426 | ||
1427 | /* Must be in command mode when calling this function */ | |
1428 | static int alps_absolute_mode_v4(struct psmouse *psmouse) | |
1429 | { | |
1430 | int reg_val; | |
1431 | ||
1432 | reg_val = alps_command_mode_read_reg(psmouse, 0x0004); | |
1433 | if (reg_val == -1) | |
1434 | return -1; | |
1435 | ||
1436 | reg_val |= 0x02; | |
1437 | if (__alps_command_mode_write_reg(psmouse, reg_val)) | |
1438 | return -1; | |
1439 | ||
1440 | return 0; | |
1441 | } | |
1442 | ||
1443 | static int alps_hw_init_v4(struct psmouse *psmouse) | |
1444 | { | |
1445 | struct alps_data *priv = psmouse->private; | |
1446 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
1447 | unsigned char param[4]; | |
1448 | ||
1449 | priv->nibble_commands = alps_v4_nibble_commands; | |
1450 | priv->addr_command = PSMOUSE_CMD_DISABLE; | |
1451 | ||
1452 | if (alps_enter_command_mode(psmouse, NULL)) | |
1453 | goto error; | |
1454 | ||
1455 | if (alps_absolute_mode_v4(psmouse)) { | |
1456 | psmouse_err(psmouse, "Failed to enter absolute mode\n"); | |
1457 | goto error; | |
1458 | } | |
1459 | ||
1460 | if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c)) | |
1461 | goto error; | |
1462 | ||
1463 | if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03)) | |
1464 | goto error; | |
1465 | ||
1466 | if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03)) | |
1467 | goto error; | |
1468 | ||
1469 | if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15)) | |
1470 | goto error; | |
1471 | ||
1472 | if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01)) | |
1473 | goto error; | |
1474 | ||
1475 | if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03)) | |
1476 | goto error; | |
1477 | ||
1478 | if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03)) | |
1479 | goto error; | |
1480 | ||
1481 | if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03)) | |
1482 | goto error; | |
1483 | ||
1484 | alps_exit_command_mode(psmouse); | |
1485 | ||
1486 | /* | |
1487 | * This sequence changes the output from a 9-byte to an | |
1488 | * 8-byte format. All the same data seems to be present, | |
1489 | * just in a more compact format. | |
1490 | */ | |
1491 | param[0] = 0xc8; | |
1492 | param[1] = 0x64; | |
1493 | param[2] = 0x50; | |
1494 | if (ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || | |
1495 | ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE) || | |
1496 | ps2_command(ps2dev, ¶m[2], PSMOUSE_CMD_SETRATE) || | |
1497 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) | |
1498 | return -1; | |
1499 | ||
1500 | /* Set rate and enable data reporting */ | |
1501 | param[0] = 0x64; | |
1502 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || | |
1503 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { | |
1504 | psmouse_err(psmouse, "Failed to enable data reporting\n"); | |
1505 | return -1; | |
1506 | } | |
1507 | ||
1508 | return 0; | |
1509 | ||
1510 | error: | |
1511 | /* | |
1512 | * Leaving the touchpad in command mode will essentially render | |
1513 | * it unusable until the machine reboots, so exit it here just | |
1514 | * to be safe | |
1515 | */ | |
1516 | alps_exit_command_mode(psmouse); | |
1517 | return -1; | |
1518 | } | |
1519 | ||
1520 | static int alps_hw_init(struct psmouse *psmouse) | |
1521 | { | |
1522 | struct alps_data *priv = psmouse->private; | |
1523 | const struct alps_model_info *model = priv->i; | |
1524 | int ret = -1; | |
1525 | ||
1526 | switch (model->proto_version) { | |
1527 | case ALPS_PROTO_V1: | |
1528 | case ALPS_PROTO_V2: | |
1529 | ret = alps_hw_init_v1_v2(psmouse); | |
1530 | break; | |
1531 | case ALPS_PROTO_V3: | |
1532 | ret = alps_hw_init_v3(psmouse); | |
1533 | break; | |
1534 | case ALPS_PROTO_V4: | |
1535 | ret = alps_hw_init_v4(psmouse); | |
1536 | break; | |
1537 | } | |
1538 | ||
1539 | return ret; | |
1540 | } | |
1541 | ||
1e0c5b12 DT |
1542 | static int alps_reconnect(struct psmouse *psmouse) |
1543 | { | |
71bb21b6 ML |
1544 | const struct alps_model_info *model; |
1545 | ||
1e0c5b12 DT |
1546 | psmouse_reset(psmouse); |
1547 | ||
71bb21b6 ML |
1548 | model = alps_get_model(psmouse, NULL); |
1549 | if (!model) | |
1e0c5b12 DT |
1550 | return -1; |
1551 | ||
71bb21b6 | 1552 | return alps_hw_init(psmouse); |
1da177e4 LT |
1553 | } |
1554 | ||
1555 | static void alps_disconnect(struct psmouse *psmouse) | |
1556 | { | |
1557 | struct alps_data *priv = psmouse->private; | |
2e5b636b | 1558 | |
1da177e4 | 1559 | psmouse_reset(psmouse); |
1d9f2626 | 1560 | del_timer_sync(&priv->timer); |
2e5b636b | 1561 | input_unregister_device(priv->dev2); |
1da177e4 LT |
1562 | kfree(priv); |
1563 | } | |
1564 | ||
1565 | int alps_init(struct psmouse *psmouse) | |
1566 | { | |
1567 | struct alps_data *priv; | |
71bb21b6 | 1568 | const struct alps_model_info *model; |
2e5b636b | 1569 | struct input_dev *dev1 = psmouse->dev, *dev2; |
1da177e4 LT |
1570 | int version; |
1571 | ||
f42649e8 | 1572 | priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL); |
2e5b636b DT |
1573 | dev2 = input_allocate_device(); |
1574 | if (!priv || !dev2) | |
1da177e4 | 1575 | goto init_fail; |
2e5b636b DT |
1576 | |
1577 | priv->dev2 = dev2; | |
1d9f2626 SK |
1578 | setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse); |
1579 | ||
1e0c5b12 | 1580 | psmouse->private = priv; |
1da177e4 | 1581 | |
25bded7c SF |
1582 | psmouse_reset(psmouse); |
1583 | ||
71bb21b6 ML |
1584 | model = alps_get_model(psmouse, &version); |
1585 | if (!model) | |
1586 | goto init_fail; | |
1587 | ||
1588 | priv->i = model; | |
1589 | ||
1590 | if (alps_hw_init(psmouse)) | |
1da177e4 LT |
1591 | goto init_fail; |
1592 | ||
7105d2ea DT |
1593 | /* |
1594 | * Undo part of setup done for us by psmouse core since touchpad | |
1595 | * is not a relative device. | |
1596 | */ | |
1597 | __clear_bit(EV_REL, dev1->evbit); | |
1598 | __clear_bit(REL_X, dev1->relbit); | |
1599 | __clear_bit(REL_Y, dev1->relbit); | |
1600 | ||
1601 | /* | |
1602 | * Now set up our capabilities. | |
1603 | */ | |
7b19ada2 JS |
1604 | dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY); |
1605 | dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH); | |
1606 | dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER); | |
71bb21b6 ML |
1607 | dev1->keybit[BIT_WORD(BTN_LEFT)] |= |
1608 | BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); | |
1da177e4 | 1609 | |
7b19ada2 | 1610 | dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS); |
25bded7c SF |
1611 | |
1612 | switch (model->proto_version) { | |
1613 | case ALPS_PROTO_V1: | |
1614 | case ALPS_PROTO_V2: | |
1615 | input_set_abs_params(dev1, ABS_X, 0, 1023, 0, 0); | |
1616 | input_set_abs_params(dev1, ABS_Y, 0, 767, 0, 0); | |
1617 | break; | |
1618 | case ALPS_PROTO_V3: | |
3b7e09fa | 1619 | case ALPS_PROTO_V4: |
01ce661f | 1620 | set_bit(INPUT_PROP_SEMI_MT, dev1->propbit); |
b4adbbef | 1621 | input_mt_init_slots(dev1, 2, 0); |
01ce661f SF |
1622 | input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, ALPS_V3_X_MAX, 0, 0); |
1623 | input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, ALPS_V3_Y_MAX, 0, 0); | |
1624 | ||
1625 | set_bit(BTN_TOOL_DOUBLETAP, dev1->keybit); | |
1626 | set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit); | |
1627 | set_bit(BTN_TOOL_QUADTAP, dev1->keybit); | |
3b7e09fa | 1628 | |
01ce661f SF |
1629 | input_set_abs_params(dev1, ABS_X, 0, ALPS_V3_X_MAX, 0, 0); |
1630 | input_set_abs_params(dev1, ABS_Y, 0, ALPS_V3_Y_MAX, 0, 0); | |
25bded7c SF |
1631 | break; |
1632 | } | |
1633 | ||
2e5b636b | 1634 | input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); |
1da177e4 | 1635 | |
71bb21b6 | 1636 | if (model->flags & ALPS_WHEEL) { |
7b19ada2 JS |
1637 | dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL); |
1638 | dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL); | |
1da177e4 LT |
1639 | } |
1640 | ||
71bb21b6 | 1641 | if (model->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { |
7b19ada2 JS |
1642 | dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD); |
1643 | dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK); | |
1da177e4 LT |
1644 | } |
1645 | ||
71bb21b6 ML |
1646 | if (model->flags & ALPS_FOUR_BUTTONS) { |
1647 | dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0); | |
1648 | dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1); | |
1649 | dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2); | |
1650 | dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3); | |
1651 | } else { | |
1652 | dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE); | |
1653 | } | |
1654 | ||
08ffce45 | 1655 | snprintf(priv->phys, sizeof(priv->phys), "%s/input1", psmouse->ps2dev.serio->phys); |
2e5b636b | 1656 | dev2->phys = priv->phys; |
71bb21b6 | 1657 | dev2->name = (model->flags & ALPS_DUALPOINT) ? "DualPoint Stick" : "PS/2 Mouse"; |
2e5b636b DT |
1658 | dev2->id.bustype = BUS_I8042; |
1659 | dev2->id.vendor = 0x0002; | |
1660 | dev2->id.product = PSMOUSE_ALPS; | |
1661 | dev2->id.version = 0x0000; | |
1db3a345 | 1662 | dev2->dev.parent = &psmouse->ps2dev.serio->dev; |
1da177e4 | 1663 | |
7b19ada2 | 1664 | dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); |
71bb21b6 ML |
1665 | dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); |
1666 | dev2->keybit[BIT_WORD(BTN_LEFT)] = | |
1667 | BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); | |
1da177e4 | 1668 | |
f42649e8 DT |
1669 | if (input_register_device(priv->dev2)) |
1670 | goto init_fail; | |
1da177e4 LT |
1671 | |
1672 | psmouse->protocol_handler = alps_process_byte; | |
f0d5c6f4 | 1673 | psmouse->poll = alps_poll; |
1da177e4 LT |
1674 | psmouse->disconnect = alps_disconnect; |
1675 | psmouse->reconnect = alps_reconnect; | |
25bded7c | 1676 | psmouse->pktsize = model->proto_version == ALPS_PROTO_V4 ? 8 : 6; |
1da177e4 | 1677 | |
f0d5c6f4 DT |
1678 | /* We are having trouble resyncing ALPS touchpads so disable it for now */ |
1679 | psmouse->resync_time = 0; | |
1680 | ||
1da177e4 LT |
1681 | return 0; |
1682 | ||
1683 | init_fail: | |
f42649e8 | 1684 | psmouse_reset(psmouse); |
2e5b636b | 1685 | input_free_device(dev2); |
1da177e4 | 1686 | kfree(priv); |
1e0c5b12 | 1687 | psmouse->private = NULL; |
1da177e4 LT |
1688 | return -1; |
1689 | } | |
1690 | ||
b7802c5c | 1691 | int alps_detect(struct psmouse *psmouse, bool set_properties) |
1da177e4 LT |
1692 | { |
1693 | int version; | |
e38de678 | 1694 | const struct alps_model_info *model; |
1da177e4 | 1695 | |
f42649e8 DT |
1696 | model = alps_get_model(psmouse, &version); |
1697 | if (!model) | |
1da177e4 LT |
1698 | return -1; |
1699 | ||
1700 | if (set_properties) { | |
1701 | psmouse->vendor = "ALPS"; | |
968ac842 DT |
1702 | psmouse->name = model->flags & ALPS_DUALPOINT ? |
1703 | "DualPoint TouchPad" : "GlidePoint"; | |
1da177e4 LT |
1704 | psmouse->model = version; |
1705 | } | |
1706 | return 0; | |
1707 | } | |
1708 |