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x86: cpa: move clflush_cache_range()
[wrt350n-kernel.git] / drivers / input / mouse / alps.c
blobb346a3b418ea78d60d4a129b911d7fe7a37035cb
1 /*
2 * ALPS touchpad PS/2 mouse driver
3 *
4 * Copyright (c) 2003 Neil Brown <neilb@cse.unsw.edu.au>
5 * Copyright (c) 2003-2005 Peter Osterlund <petero2@telia.com>
6 * Copyright (c) 2004 Dmitry Torokhov <dtor@mail.ru>
7 * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
8 *
9 * ALPS detection, tap switching and status querying info is taken from
10 * tpconfig utility (by C. Scott Ananian and Bruce Kall).
11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License version 2 as published by
14 * the Free Software Foundation.
15 */
16
17 #include <linux/input.h>
18 #include <linux/serio.h>
19 #include <linux/libps2.h>
20
21 #include "psmouse.h"
22 #include "alps.h"
23
24 #undef DEBUG
25 #ifdef DEBUG
26 #define dbg(format, arg...) printk(KERN_INFO "alps.c: " format "\n", ## arg)
27 #else
28 #define dbg(format, arg...) do {} while (0)
29 #endif
30
31 #define ALPS_DUALPOINT 0x01
32 #define ALPS_WHEEL 0x02
33 #define ALPS_FW_BK_1 0x04
34 #define ALPS_4BTN 0x08
35 #define ALPS_OLDPROTO 0x10
36 #define ALPS_PASS 0x20
37 #define ALPS_FW_BK_2 0x40
38
39 static const struct alps_model_info alps_model_data[] = {
40 { { 0x33, 0x02, 0x0a }, 0x88, 0xf8, ALPS_OLDPROTO }, /* UMAX-530T */
41 { { 0x53, 0x02, 0x0a }, 0xf8, 0xf8, 0 },
42 { { 0x53, 0x02, 0x14 }, 0xf8, 0xf8, 0 },
43 { { 0x60, 0x03, 0xc8 }, 0xf8, 0xf8, 0 }, /* HP ze1115 */
44 { { 0x63, 0x02, 0x0a }, 0xf8, 0xf8, 0 },
45 { { 0x63, 0x02, 0x14 }, 0xf8, 0xf8, 0 },
46 { { 0x63, 0x02, 0x28 }, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Fujitsu Siemens S6010 */
47 { { 0x63, 0x02, 0x3c }, 0x8f, 0x8f, ALPS_WHEEL }, /* Toshiba Satellite S2400-103 */
48 { { 0x63, 0x02, 0x50 }, 0xef, 0xef, ALPS_FW_BK_1 }, /* NEC Versa L320 */
49 { { 0x63, 0x02, 0x64 }, 0xf8, 0xf8, 0 },
50 { { 0x63, 0x03, 0xc8 }, 0xf8, 0xf8, ALPS_PASS }, /* Dell Latitude D800 */
51 { { 0x73, 0x00, 0x0a }, 0xf8, 0xf8, ALPS_DUALPOINT }, /* ThinkPad R61 8918-5QG */
52 { { 0x73, 0x02, 0x0a }, 0xf8, 0xf8, 0 },
53 { { 0x73, 0x02, 0x14 }, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Ahtec Laptop */
54 { { 0x20, 0x02, 0x0e }, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* XXX */
55 { { 0x22, 0x02, 0x0a }, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT },
56 { { 0x22, 0x02, 0x14 }, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D600 */
57 { { 0x73, 0x02, 0x50 }, 0xcf, 0xcf, ALPS_FW_BK_1 } /* Dell Vostro 1400 */
58 };
59
60 /*
61 * XXX - this entry is suspicious. First byte has zero lower nibble,
62 * which is what a normal mouse would report. Also, the value 0x0e
63 * isn't valid per PS/2 spec.
64 */
65
66 /*
67 * ALPS abolute Mode - new format
68 *
69 * byte 0: 1 ? ? ? 1 ? ? ?
70 * byte 1: 0 x6 x5 x4 x3 x2 x1 x0
71 * byte 2: 0 x10 x9 x8 x7 ? fin ges
72 * byte 3: 0 y9 y8 y7 1 M R L
73 * byte 4: 0 y6 y5 y4 y3 y2 y1 y0
74 * byte 5: 0 z6 z5 z4 z3 z2 z1 z0
75 *
76 * ?'s can have different meanings on different models,
77 * such as wheel rotation, extra buttons, stick buttons
78 * on a dualpoint, etc.
79 */
80
81 static void alps_process_packet(struct psmouse *psmouse)
82 {
83 struct alps_data *priv = psmouse->private;
84 unsigned char *packet = psmouse->packet;
85 struct input_dev *dev = psmouse->dev;
86 struct input_dev *dev2 = priv->dev2;
87 int x, y, z, ges, fin, left, right, middle;
88 int back = 0, forward = 0;
89
90 if ((packet[0] & 0xc8) == 0x08) { /* 3-byte PS/2 packet */
91 input_report_key(dev2, BTN_LEFT, packet[0] & 1);
92 input_report_key(dev2, BTN_RIGHT, packet[0] & 2);
93 input_report_key(dev2, BTN_MIDDLE, packet[0] & 4);
94 input_report_rel(dev2, REL_X,
95 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0);
96 input_report_rel(dev2, REL_Y,
97 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0);
98 input_sync(dev2);
99 return;
100 }
101
102 if (priv->i->flags & ALPS_OLDPROTO) {
103 left = packet[2] & 0x10;
104 right = packet[2] & 0x08;
105 middle = 0;
106 x = packet[1] | ((packet[0] & 0x07) << 7);
107 y = packet[4] | ((packet[3] & 0x07) << 7);
108 z = packet[5];
109 } else {
110 left = packet[3] & 1;
111 right = packet[3] & 2;
112 middle = packet[3] & 4;
113 x = packet[1] | ((packet[2] & 0x78) << (7 - 3));
114 y = packet[4] | ((packet[3] & 0x70) << (7 - 4));
115 z = packet[5];
116 }
117
118 if (priv->i->flags & ALPS_FW_BK_1) {
119 back = packet[2] & 4;
120 forward = packet[0] & 0x10;
121 }
122
123 if (priv->i->flags & ALPS_FW_BK_2) {
124 back = packet[3] & 4;
125 forward = packet[2] & 4;
126 if ((middle = forward && back))
127 forward = back = 0;
128 }
129
130 ges = packet[2] & 1;
131 fin = packet[2] & 2;
132
133 input_report_key(dev, BTN_LEFT, left);
134 input_report_key(dev, BTN_RIGHT, right);
135 input_report_key(dev, BTN_MIDDLE, middle);
136
137 if ((priv->i->flags & ALPS_DUALPOINT) && z == 127) {
138 input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x));
139 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y));
140 input_sync(dev);
141 input_sync(dev2);
142 return;
143 }
144
145 /* Convert hardware tap to a reasonable Z value */
146 if (ges && !fin) z = 40;
147
148 /*
149 * A "tap and drag" operation is reported by the hardware as a transition
150 * from (!fin && ges) to (fin && ges). This should be translated to the
151 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually.
152 */
153 if (ges && fin && !priv->prev_fin) {
154 input_report_abs(dev, ABS_X, x);
155 input_report_abs(dev, ABS_Y, y);
156 input_report_abs(dev, ABS_PRESSURE, 0);
157 input_report_key(dev, BTN_TOOL_FINGER, 0);
158 input_sync(dev);
159 }
160 priv->prev_fin = fin;
161
162 if (z > 30) input_report_key(dev, BTN_TOUCH, 1);
163 if (z < 25) input_report_key(dev, BTN_TOUCH, 0);
164
165 if (z > 0) {
166 input_report_abs(dev, ABS_X, x);
167 input_report_abs(dev, ABS_Y, y);
168 }
169
170 input_report_abs(dev, ABS_PRESSURE, z);
171 input_report_key(dev, BTN_TOOL_FINGER, z > 0);
172
173 if (priv->i->flags & ALPS_WHEEL)
174 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07));
175
176 if (priv->i->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
177 input_report_key(dev, BTN_FORWARD, forward);
178 input_report_key(dev, BTN_BACK, back);
179 }
180
181 input_sync(dev);
182 }
183
184 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
185 {
186 struct alps_data *priv = psmouse->private;
187
188 if ((psmouse->packet[0] & 0xc8) == 0x08) { /* PS/2 packet */
189 if (psmouse->pktcnt == 3) {
190 alps_process_packet(psmouse);
191 return PSMOUSE_FULL_PACKET;
192 }
193 return PSMOUSE_GOOD_DATA;
194 }
195
196 if ((psmouse->packet[0] & priv->i->mask0) != priv->i->byte0)
197 return PSMOUSE_BAD_DATA;
198
199 /* Bytes 2 - 6 should have 0 in the highest bit */
200 if (psmouse->pktcnt >= 2 && psmouse->pktcnt <= 6 &&
201 (psmouse->packet[psmouse->pktcnt - 1] & 0x80))
202 return PSMOUSE_BAD_DATA;
203
204 if (psmouse->pktcnt == 6) {
205 alps_process_packet(psmouse);
206 return PSMOUSE_FULL_PACKET;
207 }
208
209 return PSMOUSE_GOOD_DATA;
210 }
211
212 static const struct alps_model_info *alps_get_model(struct psmouse *psmouse, int *version)
213 {
214 struct ps2dev *ps2dev = &psmouse->ps2dev;
215 static const unsigned char rates[] = { 0, 10, 20, 40, 60, 80, 100, 200 };
216 unsigned char param[4];
217 int i;
218
219 /*
220 * First try "E6 report".
221 * ALPS should return 0,0,10 or 0,0,100
222 */
223 param[0] = 0;
224 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES) ||
225 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
226 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
227 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11))
228 return NULL;
229
230 param[0] = param[1] = param[2] = 0xff;
231 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
232 return NULL;
233
234 dbg("E6 report: %2.2x %2.2x %2.2x", param[0], param[1], param[2]);
235
236 if (param[0] != 0 || param[1] != 0 || (param[2] != 10 && param[2] != 100))
237 return NULL;
238
239 /*
240 * Now try "E7 report". Allowed responses are in
241 * alps_model_data[].signature
242 */
243 param[0] = 0;
244 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES) ||
245 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
246 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
247 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21))
248 return NULL;
249
250 param[0] = param[1] = param[2] = 0xff;
251 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
252 return NULL;
253
254 dbg("E7 report: %2.2x %2.2x %2.2x", param[0], param[1], param[2]);
255
256 if (version) {
257 for (i = 0; i < ARRAY_SIZE(rates) && param[2] != rates[i]; i++)
258 /* empty */;
259 *version = (param[0] << 8) | (param[1] << 4) | i;
260 }
261
262 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++)
263 if (!memcmp(param, alps_model_data[i].signature,
264 sizeof(alps_model_data[i].signature)))
265 return alps_model_data + i;
266
267 return NULL;
268 }
269
270 /*
271 * For DualPoint devices select the device that should respond to
272 * subsequent commands. It looks like glidepad is behind stickpointer,
273 * I'd thought it would be other way around...
274 */
275 static int alps_passthrough_mode(struct psmouse *psmouse, int enable)
276 {
277 struct ps2dev *ps2dev = &psmouse->ps2dev;
278 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11;
279
280 if (ps2_command(ps2dev, NULL, cmd) ||
281 ps2_command(ps2dev, NULL, cmd) ||
282 ps2_command(ps2dev, NULL, cmd) ||
283 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
284 return -1;
285
286 /* we may get 3 more bytes, just ignore them */
287 ps2_drain(ps2dev, 3, 100);
288
289 return 0;
290 }
291
292 static int alps_absolute_mode(struct psmouse *psmouse)
293 {
294 struct ps2dev *ps2dev = &psmouse->ps2dev;
295
296 /* Try ALPS magic knock - 4 disable before enable */
297 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
298 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
299 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
300 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
301 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE))
302 return -1;
303
304 /*
305 * Switch mouse to poll (remote) mode so motion data will not
306 * get in our way
307 */
308 return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL);
309 }
310
311 static int alps_get_status(struct psmouse *psmouse, char *param)
312 {
313 struct ps2dev *ps2dev = &psmouse->ps2dev;
314
315 /* Get status: 0xF5 0xF5 0xF5 0xE9 */
316 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
317 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
318 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
319 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
320 return -1;
321
322 dbg("Status: %2.2x %2.2x %2.2x", param[0], param[1], param[2]);
323
324 return 0;
325 }
326
327 /*
328 * Turn touchpad tapping on or off. The sequences are:
329 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable,
330 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable.
331 * My guess that 0xE9 (GetInfo) is here as a sync point.
332 * For models that also have stickpointer (DualPoints) its tapping
333 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but
334 * we don't fiddle with it.
335 */
336 static int alps_tap_mode(struct psmouse *psmouse, int enable)
337 {
338 struct ps2dev *ps2dev = &psmouse->ps2dev;
339 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES;
340 unsigned char tap_arg = enable ? 0x0A : 0x00;
341 unsigned char param[4];
342
343 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) ||
344 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
345 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
346 ps2_command(ps2dev, &tap_arg, cmd))
347 return -1;
348
349 if (alps_get_status(psmouse, param))
350 return -1;
351
352 return 0;
353 }
354
355 /*
356 * alps_poll() - poll the touchpad for current motion packet.
357 * Used in resync.
358 */
359 static int alps_poll(struct psmouse *psmouse)
360 {
361 struct alps_data *priv = psmouse->private;
362 unsigned char buf[6];
363 int poll_failed;
364
365 if (priv->i->flags & ALPS_PASS)
366 alps_passthrough_mode(psmouse, 1);
367
368 poll_failed = ps2_command(&psmouse->ps2dev, buf,
369 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0;
370
371 if (priv->i->flags & ALPS_PASS)
372 alps_passthrough_mode(psmouse, 0);
373
374 if (poll_failed || (buf[0] & priv->i->mask0) != priv->i->byte0)
375 return -1;
376
377 if ((psmouse->badbyte & 0xc8) == 0x08) {
378 /*
379 * Poll the track stick ...
380 */
381 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8)))
382 return -1;
383 }
384
385 memcpy(psmouse->packet, buf, sizeof(buf));
386 return 0;
387 }
388
389 static int alps_hw_init(struct psmouse *psmouse, int *version)
390 {
391 struct alps_data *priv = psmouse->private;
392
393 priv->i = alps_get_model(psmouse, version);
394 if (!priv->i)
395 return -1;
396
397 if ((priv->i->flags & ALPS_PASS) && alps_passthrough_mode(psmouse, 1))
398 return -1;
399
400 if (alps_tap_mode(psmouse, 1)) {
401 printk(KERN_WARNING "alps.c: Failed to enable hardware tapping\n");
402 return -1;
403 }
404
405 if (alps_absolute_mode(psmouse)) {
406 printk(KERN_ERR "alps.c: Failed to enable absolute mode\n");
407 return -1;
408 }
409
410 if ((priv->i->flags & ALPS_PASS) && alps_passthrough_mode(psmouse, 0))
411 return -1;
412
413 /* ALPS needs stream mode, otherwise it won't report any data */
414 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) {
415 printk(KERN_ERR "alps.c: Failed to enable stream mode\n");
416 return -1;
417 }
418
419 return 0;
420 }
421
422 static int alps_reconnect(struct psmouse *psmouse)
423 {
424 psmouse_reset(psmouse);
425
426 if (alps_hw_init(psmouse, NULL))
427 return -1;
428
429 return 0;
430 }
431
432 static void alps_disconnect(struct psmouse *psmouse)
433 {
434 struct alps_data *priv = psmouse->private;
435
436 psmouse_reset(psmouse);
437 input_unregister_device(priv->dev2);
438 kfree(priv);
439 }
440
441 int alps_init(struct psmouse *psmouse)
442 {
443 struct alps_data *priv;
444 struct input_dev *dev1 = psmouse->dev, *dev2;
445 int version;
446
447 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL);
448 dev2 = input_allocate_device();
449 if (!priv || !dev2)
450 goto init_fail;
451
452 priv->dev2 = dev2;
453 psmouse->private = priv;
454
455 if (alps_hw_init(psmouse, &version))
456 goto init_fail;
457
458 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY);
459 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH);
460 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER);
461 dev1->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_LEFT) |
462 BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
463
464 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS);
465 input_set_abs_params(dev1, ABS_X, 0, 1023, 0, 0);
466 input_set_abs_params(dev1, ABS_Y, 0, 767, 0, 0);
467 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
468
469 if (priv->i->flags & ALPS_WHEEL) {
470 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL);
471 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL);
472 }
473
474 if (priv->i->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
475 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD);
476 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK);
477 }
478
479 snprintf(priv->phys, sizeof(priv->phys), "%s/input1", psmouse->ps2dev.serio->phys);
480 dev2->phys = priv->phys;
481 dev2->name = (priv->i->flags & ALPS_DUALPOINT) ? "DualPoint Stick" : "PS/2 Mouse";
482 dev2->id.bustype = BUS_I8042;
483 dev2->id.vendor = 0x0002;
484 dev2->id.product = PSMOUSE_ALPS;
485 dev2->id.version = 0x0000;
486
487 dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
488 dev2->relbit[BIT_WORD(REL_X)] |= BIT_MASK(REL_X) | BIT_MASK(REL_Y);
489 dev2->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_LEFT) |
490 BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
491
492 if (input_register_device(priv->dev2))
493 goto init_fail;
494
495 psmouse->protocol_handler = alps_process_byte;
496 psmouse->poll = alps_poll;
497 psmouse->disconnect = alps_disconnect;
498 psmouse->reconnect = alps_reconnect;
499 psmouse->pktsize = 6;
500
501 /* We are having trouble resyncing ALPS touchpads so disable it for now */
502 psmouse->resync_time = 0;
503
504 return 0;
505
506 init_fail:
507 psmouse_reset(psmouse);
508 input_free_device(dev2);
509 kfree(priv);
510 psmouse->private = NULL;
511 return -1;
512 }
513
514 int alps_detect(struct psmouse *psmouse, int set_properties)
515 {
516 int version;
517 const struct alps_model_info *model;
518
519 model = alps_get_model(psmouse, &version);
520 if (!model)
521 return -1;
522
523 if (set_properties) {
524 psmouse->vendor = "ALPS";
525 psmouse->name = model->flags & ALPS_DUALPOINT ?
526 "DualPoint TouchPad" : "GlidePoint";
527 psmouse->model = version;
528 }
529 return 0;
530 }
531
WRT350N Kernel Patches