Commit | Line | Data |
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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 LT |
19 | #include <linux/input.h> |
20 | #include <linux/serio.h> | |
21 | #include <linux/libps2.h> | |
22 | ||
23 | #include "psmouse.h" | |
24 | #include "alps.h" | |
25 | ||
26 | #undef DEBUG | |
27 | #ifdef DEBUG | |
28 | #define dbg(format, arg...) printk(KERN_INFO "alps.c: " format "\n", ## arg) | |
29 | #else | |
30 | #define dbg(format, arg...) do {} while (0) | |
31 | #endif | |
32 | ||
71bb21b6 ML |
33 | #define ALPS_OLDPROTO 0x01 /* old style input */ |
34 | #define ALPS_DUALPOINT 0x02 /* touchpad has trackstick */ | |
35 | #define ALPS_PASS 0x04 /* device has a pass-through port */ | |
36 | ||
37 | #define ALPS_WHEEL 0x08 /* hardware wheel present */ | |
38 | #define ALPS_FW_BK_1 0x10 /* front & back buttons present */ | |
39 | #define ALPS_FW_BK_2 0x20 /* front & back buttons present */ | |
40 | #define ALPS_FOUR_BUTTONS 0x40 /* 4 direction button present */ | |
1d9f2626 SK |
41 | #define ALPS_PS2_INTERLEAVED 0x80 /* 3-byte PS/2 packet interleaved with |
42 | 6-byte ALPS packet */ | |
1da177e4 | 43 | |
e38de678 | 44 | static const struct alps_model_info alps_model_data[] = { |
b75d1728 | 45 | { { 0x32, 0x02, 0x14 }, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Toshiba Salellite Pro M10 */ |
af27a69a | 46 | { { 0x33, 0x02, 0x0a }, 0x88, 0xf8, ALPS_OLDPROTO }, /* UMAX-530T */ |
1da177e4 LT |
47 | { { 0x53, 0x02, 0x0a }, 0xf8, 0xf8, 0 }, |
48 | { { 0x53, 0x02, 0x14 }, 0xf8, 0xf8, 0 }, | |
af27a69a | 49 | { { 0x60, 0x03, 0xc8 }, 0xf8, 0xf8, 0 }, /* HP ze1115 */ |
1da177e4 LT |
50 | { { 0x63, 0x02, 0x0a }, 0xf8, 0xf8, 0 }, |
51 | { { 0x63, 0x02, 0x14 }, 0xf8, 0xf8, 0 }, | |
af27a69a DT |
52 | { { 0x63, 0x02, 0x28 }, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Fujitsu Siemens S6010 */ |
53 | { { 0x63, 0x02, 0x3c }, 0x8f, 0x8f, ALPS_WHEEL }, /* Toshiba Satellite S2400-103 */ | |
54 | { { 0x63, 0x02, 0x50 }, 0xef, 0xef, ALPS_FW_BK_1 }, /* NEC Versa L320 */ | |
1da177e4 | 55 | { { 0x63, 0x02, 0x64 }, 0xf8, 0xf8, 0 }, |
af27a69a DT |
56 | { { 0x63, 0x03, 0xc8 }, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D800 */ |
57 | { { 0x73, 0x00, 0x0a }, 0xf8, 0xf8, ALPS_DUALPOINT }, /* ThinkPad R61 8918-5QG */ | |
1da177e4 | 58 | { { 0x73, 0x02, 0x0a }, 0xf8, 0xf8, 0 }, |
af27a69a | 59 | { { 0x73, 0x02, 0x14 }, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Ahtec Laptop */ |
1da177e4 LT |
60 | { { 0x20, 0x02, 0x0e }, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* XXX */ |
61 | { { 0x22, 0x02, 0x0a }, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, | |
62 | { { 0x22, 0x02, 0x14 }, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D600 */ | |
1d9f2626 SK |
63 | /* Dell Latitude E5500, E6400, E6500, Precision M4400 */ |
64 | { { 0x62, 0x02, 0x14 }, 0xcf, 0xcf, | |
65 | ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED }, | |
71bb21b6 | 66 | { { 0x73, 0x02, 0x50 }, 0xcf, 0xcf, ALPS_FOUR_BUTTONS }, /* Dell Vostro 1400 */ |
eb8bff85 TB |
67 | { { 0x52, 0x01, 0x14 }, 0xff, 0xff, |
68 | ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED }, /* Toshiba Tecra A11-11L */ | |
1da177e4 LT |
69 | }; |
70 | ||
71 | /* | |
72 | * XXX - this entry is suspicious. First byte has zero lower nibble, | |
73 | * which is what a normal mouse would report. Also, the value 0x0e | |
74 | * isn't valid per PS/2 spec. | |
75 | */ | |
76 | ||
77 | /* | |
1d9f2626 SK |
78 | * PS/2 packet format |
79 | * | |
80 | * byte 0: 0 0 YSGN XSGN 1 M R L | |
81 | * byte 1: X7 X6 X5 X4 X3 X2 X1 X0 | |
82 | * byte 2: Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 | |
83 | * | |
84 | * Note that the device never signals overflow condition. | |
85 | * | |
86 | * ALPS absolute Mode - new format | |
968ac842 DT |
87 | * |
88 | * byte 0: 1 ? ? ? 1 ? ? ? | |
1da177e4 | 89 | * byte 1: 0 x6 x5 x4 x3 x2 x1 x0 |
1d9f2626 | 90 | * byte 2: 0 x10 x9 x8 x7 ? fin ges |
968ac842 | 91 | * byte 3: 0 y9 y8 y7 1 M R L |
1da177e4 LT |
92 | * byte 4: 0 y6 y5 y4 y3 y2 y1 y0 |
93 | * byte 5: 0 z6 z5 z4 z3 z2 z1 z0 | |
94 | * | |
1d9f2626 SK |
95 | * Dualpoint device -- interleaved packet format |
96 | * | |
97 | * byte 0: 1 1 0 0 1 1 1 1 | |
98 | * byte 1: 0 x6 x5 x4 x3 x2 x1 x0 | |
99 | * byte 2: 0 x10 x9 x8 x7 0 fin ges | |
100 | * byte 3: 0 0 YSGN XSGN 1 1 1 1 | |
101 | * byte 4: X7 X6 X5 X4 X3 X2 X1 X0 | |
102 | * byte 5: Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 | |
103 | * byte 6: 0 y9 y8 y7 1 m r l | |
104 | * byte 7: 0 y6 y5 y4 y3 y2 y1 y0 | |
105 | * byte 8: 0 z6 z5 z4 z3 z2 z1 z0 | |
106 | * | |
107 | * CAPITALS = stick, miniscules = touchpad | |
108 | * | |
1da177e4 LT |
109 | * ?'s can have different meanings on different models, |
110 | * such as wheel rotation, extra buttons, stick buttons | |
111 | * on a dualpoint, etc. | |
112 | */ | |
113 | ||
1d9f2626 SK |
114 | static bool alps_is_valid_first_byte(const struct alps_model_info *model, |
115 | unsigned char data) | |
116 | { | |
117 | return (data & model->mask0) == model->byte0; | |
118 | } | |
119 | ||
120 | static void alps_report_buttons(struct psmouse *psmouse, | |
121 | struct input_dev *dev1, struct input_dev *dev2, | |
122 | int left, int right, int middle) | |
123 | { | |
c91ed059 MB |
124 | struct input_dev *dev; |
125 | ||
126 | /* | |
127 | * If shared button has already been reported on the | |
128 | * other device (dev2) then this event should be also | |
129 | * sent through that device. | |
130 | */ | |
131 | dev = test_bit(BTN_LEFT, dev2->key) ? dev2 : dev1; | |
132 | input_report_key(dev, BTN_LEFT, left); | |
133 | ||
134 | dev = test_bit(BTN_RIGHT, dev2->key) ? dev2 : dev1; | |
135 | input_report_key(dev, BTN_RIGHT, right); | |
136 | ||
137 | dev = test_bit(BTN_MIDDLE, dev2->key) ? dev2 : dev1; | |
138 | input_report_key(dev, BTN_MIDDLE, middle); | |
139 | ||
140 | /* | |
141 | * Sync the _other_ device now, we'll do the first | |
142 | * device later once we report the rest of the events. | |
143 | */ | |
144 | input_sync(dev2); | |
1d9f2626 SK |
145 | } |
146 | ||
7d12e780 | 147 | static void alps_process_packet(struct psmouse *psmouse) |
1da177e4 LT |
148 | { |
149 | struct alps_data *priv = psmouse->private; | |
71bb21b6 | 150 | const struct alps_model_info *model = priv->i; |
1da177e4 | 151 | unsigned char *packet = psmouse->packet; |
2e5b636b DT |
152 | struct input_dev *dev = psmouse->dev; |
153 | struct input_dev *dev2 = priv->dev2; | |
1da177e4 | 154 | int x, y, z, ges, fin, left, right, middle; |
c30b4c10 | 155 | int back = 0, forward = 0; |
1da177e4 | 156 | |
71bb21b6 | 157 | if (model->flags & ALPS_OLDPROTO) { |
d2f4012f YM |
158 | left = packet[2] & 0x10; |
159 | right = packet[2] & 0x08; | |
1da177e4 LT |
160 | middle = 0; |
161 | x = packet[1] | ((packet[0] & 0x07) << 7); | |
162 | y = packet[4] | ((packet[3] & 0x07) << 7); | |
163 | z = packet[5]; | |
164 | } else { | |
165 | left = packet[3] & 1; | |
166 | right = packet[3] & 2; | |
167 | middle = packet[3] & 4; | |
168 | x = packet[1] | ((packet[2] & 0x78) << (7 - 3)); | |
169 | y = packet[4] | ((packet[3] & 0x70) << (7 - 4)); | |
170 | z = packet[5]; | |
171 | } | |
172 | ||
71bb21b6 | 173 | if (model->flags & ALPS_FW_BK_1) { |
3c00bb96 LK |
174 | back = packet[0] & 0x10; |
175 | forward = packet[2] & 4; | |
c30b4c10 ICR |
176 | } |
177 | ||
71bb21b6 | 178 | if (model->flags & ALPS_FW_BK_2) { |
c30b4c10 ICR |
179 | back = packet[3] & 4; |
180 | forward = packet[2] & 4; | |
181 | if ((middle = forward && back)) | |
182 | forward = back = 0; | |
183 | } | |
184 | ||
1da177e4 LT |
185 | ges = packet[2] & 1; |
186 | fin = packet[2] & 2; | |
187 | ||
71bb21b6 | 188 | if ((model->flags & ALPS_DUALPOINT) && z == 127) { |
1da177e4 LT |
189 | input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x)); |
190 | input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y)); | |
d7ed5d88 | 191 | |
1d9f2626 | 192 | alps_report_buttons(psmouse, dev2, dev, left, right, middle); |
d7ed5d88 | 193 | |
1da177e4 LT |
194 | input_sync(dev2); |
195 | return; | |
196 | } | |
197 | ||
1d9f2626 | 198 | alps_report_buttons(psmouse, dev, dev2, left, right, middle); |
d7ed5d88 | 199 | |
1da177e4 | 200 | /* Convert hardware tap to a reasonable Z value */ |
71bb21b6 ML |
201 | if (ges && !fin) |
202 | z = 40; | |
1da177e4 LT |
203 | |
204 | /* | |
205 | * A "tap and drag" operation is reported by the hardware as a transition | |
206 | * from (!fin && ges) to (fin && ges). This should be translated to the | |
207 | * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually. | |
208 | */ | |
209 | if (ges && fin && !priv->prev_fin) { | |
210 | input_report_abs(dev, ABS_X, x); | |
211 | input_report_abs(dev, ABS_Y, y); | |
212 | input_report_abs(dev, ABS_PRESSURE, 0); | |
213 | input_report_key(dev, BTN_TOOL_FINGER, 0); | |
214 | input_sync(dev); | |
215 | } | |
216 | priv->prev_fin = fin; | |
217 | ||
71bb21b6 ML |
218 | if (z > 30) |
219 | input_report_key(dev, BTN_TOUCH, 1); | |
220 | if (z < 25) | |
221 | input_report_key(dev, BTN_TOUCH, 0); | |
1da177e4 LT |
222 | |
223 | if (z > 0) { | |
224 | input_report_abs(dev, ABS_X, x); | |
225 | input_report_abs(dev, ABS_Y, y); | |
226 | } | |
227 | ||
228 | input_report_abs(dev, ABS_PRESSURE, z); | |
229 | input_report_key(dev, BTN_TOOL_FINGER, z > 0); | |
230 | ||
71bb21b6 | 231 | if (model->flags & ALPS_WHEEL) |
e6c047b9 | 232 | input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07)); |
1da177e4 | 233 | |
71bb21b6 | 234 | if (model->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { |
c30b4c10 ICR |
235 | input_report_key(dev, BTN_FORWARD, forward); |
236 | input_report_key(dev, BTN_BACK, back); | |
1da177e4 LT |
237 | } |
238 | ||
71bb21b6 ML |
239 | if (model->flags & ALPS_FOUR_BUTTONS) { |
240 | input_report_key(dev, BTN_0, packet[2] & 4); | |
241 | input_report_key(dev, BTN_1, packet[0] & 0x10); | |
242 | input_report_key(dev, BTN_2, packet[3] & 4); | |
243 | input_report_key(dev, BTN_3, packet[0] & 0x20); | |
244 | } | |
245 | ||
1da177e4 LT |
246 | input_sync(dev); |
247 | } | |
248 | ||
1d9f2626 SK |
249 | static void alps_report_bare_ps2_packet(struct psmouse *psmouse, |
250 | unsigned char packet[], | |
251 | bool report_buttons) | |
252 | { | |
253 | struct alps_data *priv = psmouse->private; | |
254 | struct input_dev *dev2 = priv->dev2; | |
255 | ||
256 | if (report_buttons) | |
257 | alps_report_buttons(psmouse, dev2, psmouse->dev, | |
258 | packet[0] & 1, packet[0] & 2, packet[0] & 4); | |
259 | ||
260 | input_report_rel(dev2, REL_X, | |
261 | packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0); | |
262 | input_report_rel(dev2, REL_Y, | |
263 | packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0); | |
264 | ||
265 | input_sync(dev2); | |
266 | } | |
267 | ||
268 | static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse) | |
269 | { | |
270 | struct alps_data *priv = psmouse->private; | |
271 | ||
272 | if (psmouse->pktcnt < 6) | |
273 | return PSMOUSE_GOOD_DATA; | |
274 | ||
275 | if (psmouse->pktcnt == 6) { | |
276 | /* | |
277 | * Start a timer to flush the packet if it ends up last | |
278 | * 6-byte packet in the stream. Timer needs to fire | |
279 | * psmouse core times out itself. 20 ms should be enough | |
280 | * to decide if we are getting more data or not. | |
281 | */ | |
282 | mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20)); | |
283 | return PSMOUSE_GOOD_DATA; | |
284 | } | |
285 | ||
286 | del_timer(&priv->timer); | |
287 | ||
288 | if (psmouse->packet[6] & 0x80) { | |
289 | ||
290 | /* | |
291 | * Highest bit is set - that means we either had | |
292 | * complete ALPS packet and this is start of the | |
293 | * next packet or we got garbage. | |
294 | */ | |
295 | ||
296 | if (((psmouse->packet[3] | | |
297 | psmouse->packet[4] | | |
298 | psmouse->packet[5]) & 0x80) || | |
299 | (!alps_is_valid_first_byte(priv->i, psmouse->packet[6]))) { | |
300 | dbg("refusing packet %x %x %x %x " | |
301 | "(suspected interleaved ps/2)\n", | |
302 | psmouse->packet[3], psmouse->packet[4], | |
303 | psmouse->packet[5], psmouse->packet[6]); | |
304 | return PSMOUSE_BAD_DATA; | |
305 | } | |
306 | ||
307 | alps_process_packet(psmouse); | |
308 | ||
309 | /* Continue with the next packet */ | |
310 | psmouse->packet[0] = psmouse->packet[6]; | |
311 | psmouse->pktcnt = 1; | |
312 | ||
313 | } else { | |
314 | ||
315 | /* | |
316 | * High bit is 0 - that means that we indeed got a PS/2 | |
317 | * packet in the middle of ALPS packet. | |
318 | * | |
319 | * There is also possibility that we got 6-byte ALPS | |
320 | * packet followed by 3-byte packet from trackpoint. We | |
321 | * can not distinguish between these 2 scenarios but | |
322 | * becase the latter is unlikely to happen in course of | |
323 | * normal operation (user would need to press all | |
324 | * buttons on the pad and start moving trackpoint | |
325 | * without touching the pad surface) we assume former. | |
326 | * Even if we are wrong the wost thing that would happen | |
327 | * the cursor would jump but we should not get protocol | |
328 | * desynchronization. | |
329 | */ | |
330 | ||
331 | alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3], | |
332 | false); | |
333 | ||
334 | /* | |
335 | * Continue with the standard ALPS protocol handling, | |
336 | * but make sure we won't process it as an interleaved | |
337 | * packet again, which may happen if all buttons are | |
338 | * pressed. To avoid this let's reset the 4th bit which | |
339 | * is normally 1. | |
340 | */ | |
341 | psmouse->packet[3] = psmouse->packet[6] & 0xf7; | |
342 | psmouse->pktcnt = 4; | |
343 | } | |
344 | ||
345 | return PSMOUSE_GOOD_DATA; | |
346 | } | |
347 | ||
348 | static void alps_flush_packet(unsigned long data) | |
349 | { | |
350 | struct psmouse *psmouse = (struct psmouse *)data; | |
351 | ||
352 | serio_pause_rx(psmouse->ps2dev.serio); | |
353 | ||
354 | if (psmouse->pktcnt == 6) { | |
355 | ||
356 | /* | |
357 | * We did not any more data in reasonable amount of time. | |
358 | * Validate the last 3 bytes and process as a standard | |
359 | * ALPS packet. | |
360 | */ | |
361 | if ((psmouse->packet[3] | | |
362 | psmouse->packet[4] | | |
363 | psmouse->packet[5]) & 0x80) { | |
364 | dbg("refusing packet %x %x %x " | |
365 | "(suspected interleaved ps/2)\n", | |
366 | psmouse->packet[3], psmouse->packet[4], | |
367 | psmouse->packet[5]); | |
368 | } else { | |
369 | alps_process_packet(psmouse); | |
370 | } | |
371 | psmouse->pktcnt = 0; | |
372 | } | |
373 | ||
374 | serio_continue_rx(psmouse->ps2dev.serio); | |
375 | } | |
376 | ||
7d12e780 | 377 | static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) |
1da177e4 LT |
378 | { |
379 | struct alps_data *priv = psmouse->private; | |
1d9f2626 | 380 | const struct alps_model_info *model = priv->i; |
1da177e4 LT |
381 | |
382 | if ((psmouse->packet[0] & 0xc8) == 0x08) { /* PS/2 packet */ | |
383 | if (psmouse->pktcnt == 3) { | |
1d9f2626 SK |
384 | alps_report_bare_ps2_packet(psmouse, psmouse->packet, |
385 | true); | |
1da177e4 LT |
386 | return PSMOUSE_FULL_PACKET; |
387 | } | |
388 | return PSMOUSE_GOOD_DATA; | |
389 | } | |
390 | ||
1d9f2626 SK |
391 | /* Check for PS/2 packet stuffed in the middle of ALPS packet. */ |
392 | ||
393 | if ((model->flags & ALPS_PS2_INTERLEAVED) && | |
394 | psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) { | |
395 | return alps_handle_interleaved_ps2(psmouse); | |
396 | } | |
397 | ||
398 | if (!alps_is_valid_first_byte(model, psmouse->packet[0])) { | |
399 | dbg("refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n", | |
400 | psmouse->packet[0], model->mask0, model->byte0); | |
1da177e4 | 401 | return PSMOUSE_BAD_DATA; |
1d9f2626 | 402 | } |
1da177e4 LT |
403 | |
404 | /* Bytes 2 - 6 should have 0 in the highest bit */ | |
405 | if (psmouse->pktcnt >= 2 && psmouse->pktcnt <= 6 && | |
1d9f2626 SK |
406 | (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) { |
407 | dbg("refusing packet[%i] = %x\n", | |
408 | psmouse->pktcnt - 1, psmouse->packet[psmouse->pktcnt - 1]); | |
1da177e4 | 409 | return PSMOUSE_BAD_DATA; |
1d9f2626 | 410 | } |
1da177e4 LT |
411 | |
412 | if (psmouse->pktcnt == 6) { | |
7d12e780 | 413 | alps_process_packet(psmouse); |
1da177e4 LT |
414 | return PSMOUSE_FULL_PACKET; |
415 | } | |
416 | ||
417 | return PSMOUSE_GOOD_DATA; | |
418 | } | |
419 | ||
e38de678 | 420 | static const struct alps_model_info *alps_get_model(struct psmouse *psmouse, int *version) |
1da177e4 LT |
421 | { |
422 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
e38de678 | 423 | static const unsigned char rates[] = { 0, 10, 20, 40, 60, 80, 100, 200 }; |
1da177e4 LT |
424 | unsigned char param[4]; |
425 | int i; | |
426 | ||
427 | /* | |
428 | * First try "E6 report". | |
429 | * ALPS should return 0,0,10 or 0,0,100 | |
430 | */ | |
431 | param[0] = 0; | |
432 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES) || | |
433 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || | |
434 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || | |
435 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11)) | |
436 | return NULL; | |
437 | ||
438 | param[0] = param[1] = param[2] = 0xff; | |
439 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) | |
440 | return NULL; | |
441 | ||
442 | dbg("E6 report: %2.2x %2.2x %2.2x", param[0], param[1], param[2]); | |
443 | ||
444 | if (param[0] != 0 || param[1] != 0 || (param[2] != 10 && param[2] != 100)) | |
445 | return NULL; | |
446 | ||
447 | /* | |
448 | * Now try "E7 report". Allowed responses are in | |
449 | * alps_model_data[].signature | |
450 | */ | |
451 | param[0] = 0; | |
452 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES) || | |
453 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || | |
454 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || | |
455 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21)) | |
456 | return NULL; | |
457 | ||
458 | param[0] = param[1] = param[2] = 0xff; | |
459 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) | |
460 | return NULL; | |
461 | ||
462 | dbg("E7 report: %2.2x %2.2x %2.2x", param[0], param[1], param[2]); | |
463 | ||
1e0c5b12 DT |
464 | if (version) { |
465 | for (i = 0; i < ARRAY_SIZE(rates) && param[2] != rates[i]; i++) | |
466 | /* empty */; | |
467 | *version = (param[0] << 8) | (param[1] << 4) | i; | |
468 | } | |
1da177e4 LT |
469 | |
470 | for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) | |
1e0c5b12 DT |
471 | if (!memcmp(param, alps_model_data[i].signature, |
472 | sizeof(alps_model_data[i].signature))) | |
1da177e4 LT |
473 | return alps_model_data + i; |
474 | ||
475 | return NULL; | |
476 | } | |
477 | ||
478 | /* | |
479 | * For DualPoint devices select the device that should respond to | |
480 | * subsequent commands. It looks like glidepad is behind stickpointer, | |
481 | * I'd thought it would be other way around... | |
482 | */ | |
b7802c5c | 483 | static int alps_passthrough_mode(struct psmouse *psmouse, bool enable) |
1da177e4 LT |
484 | { |
485 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
1da177e4 LT |
486 | int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11; |
487 | ||
488 | if (ps2_command(ps2dev, NULL, cmd) || | |
489 | ps2_command(ps2dev, NULL, cmd) || | |
490 | ps2_command(ps2dev, NULL, cmd) || | |
491 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) | |
492 | return -1; | |
493 | ||
494 | /* we may get 3 more bytes, just ignore them */ | |
c611763d | 495 | ps2_drain(ps2dev, 3, 100); |
1da177e4 LT |
496 | |
497 | return 0; | |
498 | } | |
499 | ||
500 | static int alps_absolute_mode(struct psmouse *psmouse) | |
501 | { | |
502 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
503 | ||
504 | /* Try ALPS magic knock - 4 disable before enable */ | |
505 | if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || | |
506 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || | |
507 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || | |
508 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || | |
509 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) | |
510 | return -1; | |
511 | ||
512 | /* | |
513 | * Switch mouse to poll (remote) mode so motion data will not | |
514 | * get in our way | |
515 | */ | |
516 | return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL); | |
517 | } | |
518 | ||
519 | static int alps_get_status(struct psmouse *psmouse, char *param) | |
520 | { | |
521 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
522 | ||
523 | /* Get status: 0xF5 0xF5 0xF5 0xE9 */ | |
524 | if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || | |
525 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || | |
526 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || | |
527 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) | |
528 | return -1; | |
529 | ||
530 | dbg("Status: %2.2x %2.2x %2.2x", param[0], param[1], param[2]); | |
531 | ||
532 | return 0; | |
533 | } | |
534 | ||
535 | /* | |
536 | * Turn touchpad tapping on or off. The sequences are: | |
537 | * 0xE9 0xF5 0xF5 0xF3 0x0A to enable, | |
538 | * 0xE9 0xF5 0xF5 0xE8 0x00 to disable. | |
539 | * My guess that 0xE9 (GetInfo) is here as a sync point. | |
540 | * For models that also have stickpointer (DualPoints) its tapping | |
541 | * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but | |
542 | * we don't fiddle with it. | |
543 | */ | |
544 | static int alps_tap_mode(struct psmouse *psmouse, int enable) | |
545 | { | |
546 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
547 | int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES; | |
548 | unsigned char tap_arg = enable ? 0x0A : 0x00; | |
549 | unsigned char param[4]; | |
550 | ||
551 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) || | |
552 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || | |
553 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || | |
554 | ps2_command(ps2dev, &tap_arg, cmd)) | |
555 | return -1; | |
556 | ||
557 | if (alps_get_status(psmouse, param)) | |
558 | return -1; | |
559 | ||
560 | return 0; | |
561 | } | |
562 | ||
f0d5c6f4 DT |
563 | /* |
564 | * alps_poll() - poll the touchpad for current motion packet. | |
565 | * Used in resync. | |
566 | */ | |
567 | static int alps_poll(struct psmouse *psmouse) | |
568 | { | |
569 | struct alps_data *priv = psmouse->private; | |
570 | unsigned char buf[6]; | |
b7802c5c | 571 | bool poll_failed; |
f0d5c6f4 DT |
572 | |
573 | if (priv->i->flags & ALPS_PASS) | |
b7802c5c | 574 | alps_passthrough_mode(psmouse, true); |
f0d5c6f4 DT |
575 | |
576 | poll_failed = ps2_command(&psmouse->ps2dev, buf, | |
577 | PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0; | |
578 | ||
579 | if (priv->i->flags & ALPS_PASS) | |
b7802c5c | 580 | alps_passthrough_mode(psmouse, false); |
f0d5c6f4 DT |
581 | |
582 | if (poll_failed || (buf[0] & priv->i->mask0) != priv->i->byte0) | |
583 | return -1; | |
584 | ||
585 | if ((psmouse->badbyte & 0xc8) == 0x08) { | |
586 | /* | |
587 | * Poll the track stick ... | |
588 | */ | |
589 | if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8))) | |
590 | return -1; | |
591 | } | |
592 | ||
593 | memcpy(psmouse->packet, buf, sizeof(buf)); | |
594 | return 0; | |
595 | } | |
596 | ||
71bb21b6 | 597 | static int alps_hw_init(struct psmouse *psmouse) |
1da177e4 LT |
598 | { |
599 | struct alps_data *priv = psmouse->private; | |
71bb21b6 | 600 | const struct alps_model_info *model = priv->i; |
f3a5c73d | 601 | |
71bb21b6 | 602 | if ((model->flags & ALPS_PASS) && |
b7802c5c | 603 | alps_passthrough_mode(psmouse, true)) { |
1da177e4 | 604 | return -1; |
b7802c5c | 605 | } |
1da177e4 | 606 | |
b7802c5c | 607 | if (alps_tap_mode(psmouse, true)) { |
1e0c5b12 | 608 | printk(KERN_WARNING "alps.c: Failed to enable hardware tapping\n"); |
1da177e4 | 609 | return -1; |
963f626d | 610 | } |
1da177e4 LT |
611 | |
612 | if (alps_absolute_mode(psmouse)) { | |
1e0c5b12 | 613 | printk(KERN_ERR "alps.c: Failed to enable absolute mode\n"); |
1da177e4 LT |
614 | return -1; |
615 | } | |
616 | ||
71bb21b6 | 617 | if ((model->flags & ALPS_PASS) && |
b7802c5c | 618 | alps_passthrough_mode(psmouse, false)) { |
1da177e4 | 619 | return -1; |
b7802c5c | 620 | } |
1da177e4 | 621 | |
1e0c5b12 DT |
622 | /* ALPS needs stream mode, otherwise it won't report any data */ |
623 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) { | |
624 | printk(KERN_ERR "alps.c: Failed to enable stream mode\n"); | |
625 | return -1; | |
626 | } | |
627 | ||
628 | return 0; | |
629 | } | |
630 | ||
631 | static int alps_reconnect(struct psmouse *psmouse) | |
632 | { | |
71bb21b6 ML |
633 | const struct alps_model_info *model; |
634 | ||
1e0c5b12 DT |
635 | psmouse_reset(psmouse); |
636 | ||
71bb21b6 ML |
637 | model = alps_get_model(psmouse, NULL); |
638 | if (!model) | |
1e0c5b12 DT |
639 | return -1; |
640 | ||
71bb21b6 | 641 | return alps_hw_init(psmouse); |
1da177e4 LT |
642 | } |
643 | ||
644 | static void alps_disconnect(struct psmouse *psmouse) | |
645 | { | |
646 | struct alps_data *priv = psmouse->private; | |
2e5b636b | 647 | |
1da177e4 | 648 | psmouse_reset(psmouse); |
1d9f2626 | 649 | del_timer_sync(&priv->timer); |
2e5b636b | 650 | input_unregister_device(priv->dev2); |
1da177e4 LT |
651 | kfree(priv); |
652 | } | |
653 | ||
654 | int alps_init(struct psmouse *psmouse) | |
655 | { | |
656 | struct alps_data *priv; | |
71bb21b6 | 657 | const struct alps_model_info *model; |
2e5b636b | 658 | struct input_dev *dev1 = psmouse->dev, *dev2; |
1da177e4 LT |
659 | int version; |
660 | ||
f42649e8 | 661 | priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL); |
2e5b636b DT |
662 | dev2 = input_allocate_device(); |
663 | if (!priv || !dev2) | |
1da177e4 | 664 | goto init_fail; |
2e5b636b DT |
665 | |
666 | priv->dev2 = dev2; | |
1d9f2626 SK |
667 | setup_timer(&priv->timer, alps_flush_packet, (unsigned long)psmouse); |
668 | ||
1e0c5b12 | 669 | psmouse->private = priv; |
1da177e4 | 670 | |
71bb21b6 ML |
671 | model = alps_get_model(psmouse, &version); |
672 | if (!model) | |
673 | goto init_fail; | |
674 | ||
675 | priv->i = model; | |
676 | ||
677 | if (alps_hw_init(psmouse)) | |
1da177e4 LT |
678 | goto init_fail; |
679 | ||
7105d2ea DT |
680 | /* |
681 | * Undo part of setup done for us by psmouse core since touchpad | |
682 | * is not a relative device. | |
683 | */ | |
684 | __clear_bit(EV_REL, dev1->evbit); | |
685 | __clear_bit(REL_X, dev1->relbit); | |
686 | __clear_bit(REL_Y, dev1->relbit); | |
687 | ||
688 | /* | |
689 | * Now set up our capabilities. | |
690 | */ | |
7b19ada2 JS |
691 | dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY); |
692 | dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH); | |
693 | dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER); | |
71bb21b6 ML |
694 | dev1->keybit[BIT_WORD(BTN_LEFT)] |= |
695 | BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); | |
1da177e4 | 696 | |
7b19ada2 | 697 | dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS); |
2e5b636b DT |
698 | input_set_abs_params(dev1, ABS_X, 0, 1023, 0, 0); |
699 | input_set_abs_params(dev1, ABS_Y, 0, 767, 0, 0); | |
700 | input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); | |
1da177e4 | 701 | |
71bb21b6 | 702 | if (model->flags & ALPS_WHEEL) { |
7b19ada2 JS |
703 | dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL); |
704 | dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL); | |
1da177e4 LT |
705 | } |
706 | ||
71bb21b6 | 707 | if (model->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { |
7b19ada2 JS |
708 | dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD); |
709 | dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK); | |
1da177e4 LT |
710 | } |
711 | ||
71bb21b6 ML |
712 | if (model->flags & ALPS_FOUR_BUTTONS) { |
713 | dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0); | |
714 | dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1); | |
715 | dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2); | |
716 | dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3); | |
717 | } else { | |
718 | dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE); | |
719 | } | |
720 | ||
08ffce45 | 721 | snprintf(priv->phys, sizeof(priv->phys), "%s/input1", psmouse->ps2dev.serio->phys); |
2e5b636b | 722 | dev2->phys = priv->phys; |
71bb21b6 | 723 | dev2->name = (model->flags & ALPS_DUALPOINT) ? "DualPoint Stick" : "PS/2 Mouse"; |
2e5b636b DT |
724 | dev2->id.bustype = BUS_I8042; |
725 | dev2->id.vendor = 0x0002; | |
726 | dev2->id.product = PSMOUSE_ALPS; | |
727 | dev2->id.version = 0x0000; | |
1db3a345 | 728 | dev2->dev.parent = &psmouse->ps2dev.serio->dev; |
1da177e4 | 729 | |
7b19ada2 | 730 | dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); |
71bb21b6 ML |
731 | dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); |
732 | dev2->keybit[BIT_WORD(BTN_LEFT)] = | |
733 | BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); | |
1da177e4 | 734 | |
f42649e8 DT |
735 | if (input_register_device(priv->dev2)) |
736 | goto init_fail; | |
1da177e4 LT |
737 | |
738 | psmouse->protocol_handler = alps_process_byte; | |
f0d5c6f4 | 739 | psmouse->poll = alps_poll; |
1da177e4 LT |
740 | psmouse->disconnect = alps_disconnect; |
741 | psmouse->reconnect = alps_reconnect; | |
742 | psmouse->pktsize = 6; | |
743 | ||
f0d5c6f4 DT |
744 | /* We are having trouble resyncing ALPS touchpads so disable it for now */ |
745 | psmouse->resync_time = 0; | |
746 | ||
1da177e4 LT |
747 | return 0; |
748 | ||
749 | init_fail: | |
f42649e8 | 750 | psmouse_reset(psmouse); |
2e5b636b | 751 | input_free_device(dev2); |
1da177e4 | 752 | kfree(priv); |
1e0c5b12 | 753 | psmouse->private = NULL; |
1da177e4 LT |
754 | return -1; |
755 | } | |
756 | ||
b7802c5c | 757 | int alps_detect(struct psmouse *psmouse, bool set_properties) |
1da177e4 LT |
758 | { |
759 | int version; | |
e38de678 | 760 | const struct alps_model_info *model; |
1da177e4 | 761 | |
f42649e8 DT |
762 | model = alps_get_model(psmouse, &version); |
763 | if (!model) | |
1da177e4 LT |
764 | return -1; |
765 | ||
766 | if (set_properties) { | |
767 | psmouse->vendor = "ALPS"; | |
968ac842 DT |
768 | psmouse->name = model->flags & ALPS_DUALPOINT ? |
769 | "DualPoint TouchPad" : "GlidePoint"; | |
1da177e4 LT |
770 | psmouse->model = version; |
771 | } | |
772 | return 0; | |
773 | } | |
774 |