2 * ALPS touchpad PS/2 mouse driver
4 * Copyright (c) 2003 Neil Brown <neilb@cse.unsw.edu.au>
5 * Copyright (c) 2003-2005 Peter Osterlund <petero2@telia.com>
6 * Copyright (c) 2004 Dmitry Torokhov <dtor@mail.ru>
7 * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
9 * ALPS detection, tap switching and status querying info is taken from
10 * tpconfig utility (by C. Scott Ananian and Bruce Kall).
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.
17 #include <linux/input.h>
18 #include <linux/serio.h>
19 #include <linux/libps2.h>
26 #define dbg(format, arg...) printk(KERN_INFO "alps.c: " format "\n", ## arg)
28 #define dbg(format, arg...) do {} while (0)
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
39 static const struct alps_model_info alps_model_data[] = {
40 { { 0x32, 0x02, 0x14 }, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Toshiba Salellite Pro M10 */
41 { { 0x33, 0x02, 0x0a }, 0x88, 0xf8, ALPS_OLDPROTO }, /* UMAX-530T */
42 { { 0x53, 0x02, 0x0a }, 0xf8, 0xf8, 0 },
43 { { 0x53, 0x02, 0x14 }, 0xf8, 0xf8, 0 },
44 { { 0x60, 0x03, 0xc8 }, 0xf8, 0xf8, 0 }, /* HP ze1115 */
45 { { 0x63, 0x02, 0x0a }, 0xf8, 0xf8, 0 },
46 { { 0x63, 0x02, 0x14 }, 0xf8, 0xf8, 0 },
47 { { 0x63, 0x02, 0x28 }, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Fujitsu Siemens S6010 */
48 { { 0x63, 0x02, 0x3c }, 0x8f, 0x8f, ALPS_WHEEL }, /* Toshiba Satellite S2400-103 */
49 { { 0x63, 0x02, 0x50 }, 0xef, 0xef, ALPS_FW_BK_1 }, /* NEC Versa L320 */
50 { { 0x63, 0x02, 0x64 }, 0xf8, 0xf8, 0 },
51 { { 0x63, 0x03, 0xc8 }, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D800 */
52 { { 0x73, 0x00, 0x0a }, 0xf8, 0xf8, ALPS_DUALPOINT }, /* ThinkPad R61 8918-5QG */
53 { { 0x73, 0x02, 0x0a }, 0xf8, 0xf8, 0 },
54 { { 0x73, 0x02, 0x14 }, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Ahtec Laptop */
55 { { 0x20, 0x02, 0x0e }, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* XXX */
56 { { 0x22, 0x02, 0x0a }, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT },
57 { { 0x22, 0x02, 0x14 }, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D600 */
58 { { 0x62, 0x02, 0x14 }, 0xcf, 0xcf, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude E6500 */
59 { { 0x73, 0x02, 0x50 }, 0xcf, 0xcf, ALPS_FW_BK_1 }, /* Dell Vostro 1400 */
63 * XXX - this entry is suspicious. First byte has zero lower nibble,
64 * which is what a normal mouse would report. Also, the value 0x0e
65 * isn't valid per PS/2 spec.
69 * ALPS abolute Mode - new format
71 * byte 0: 1 ? ? ? 1 ? ? ?
72 * byte 1: 0 x6 x5 x4 x3 x2 x1 x0
73 * byte 2: 0 x10 x9 x8 x7 ? fin ges
74 * byte 3: 0 y9 y8 y7 1 M R L
75 * byte 4: 0 y6 y5 y4 y3 y2 y1 y0
76 * byte 5: 0 z6 z5 z4 z3 z2 z1 z0
78 * ?'s can have different meanings on different models,
79 * such as wheel rotation, extra buttons, stick buttons
80 * on a dualpoint, etc.
83 static void alps_process_packet(struct psmouse *psmouse)
85 struct alps_data *priv = psmouse->private;
86 unsigned char *packet = psmouse->packet;
87 struct input_dev *dev = psmouse->dev;
88 struct input_dev *dev2 = priv->dev2;
89 int x, y, z, ges, fin, left, right, middle;
90 int back = 0, forward = 0;
92 if ((packet[0] & 0xc8) == 0x08) { /* 3-byte PS/2 packet */
93 input_report_key(dev2, BTN_LEFT, packet[0] & 1);
94 input_report_key(dev2, BTN_RIGHT, packet[0] & 2);
95 input_report_key(dev2, BTN_MIDDLE, packet[0] & 4);
96 input_report_rel(dev2, REL_X,
97 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0);
98 input_report_rel(dev2, REL_Y,
99 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0);
104 if (priv->i->flags & ALPS_OLDPROTO) {
105 left = packet[2] & 0x10;
106 right = packet[2] & 0x08;
108 x = packet[1] | ((packet[0] & 0x07) << 7);
109 y = packet[4] | ((packet[3] & 0x07) << 7);
112 left = packet[3] & 1;
113 right = packet[3] & 2;
114 middle = packet[3] & 4;
115 x = packet[1] | ((packet[2] & 0x78) << (7 - 3));
116 y = packet[4] | ((packet[3] & 0x70) << (7 - 4));
120 if (priv->i->flags & ALPS_FW_BK_1) {
121 back = packet[0] & 0x10;
122 forward = packet[2] & 4;
125 if (priv->i->flags & ALPS_FW_BK_2) {
126 back = packet[3] & 4;
127 forward = packet[2] & 4;
128 if ((middle = forward && back))
135 if ((priv->i->flags & ALPS_DUALPOINT) && z == 127) {
136 input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x));
137 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y));
139 input_report_key(dev2, BTN_LEFT, left);
140 input_report_key(dev2, BTN_RIGHT, right);
141 input_report_key(dev2, BTN_MIDDLE, middle);
148 input_report_key(dev, BTN_LEFT, left);
149 input_report_key(dev, BTN_RIGHT, right);
150 input_report_key(dev, BTN_MIDDLE, middle);
152 /* Convert hardware tap to a reasonable Z value */
153 if (ges && !fin) z = 40;
156 * A "tap and drag" operation is reported by the hardware as a transition
157 * from (!fin && ges) to (fin && ges). This should be translated to the
158 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually.
160 if (ges && fin && !priv->prev_fin) {
161 input_report_abs(dev, ABS_X, x);
162 input_report_abs(dev, ABS_Y, y);
163 input_report_abs(dev, ABS_PRESSURE, 0);
164 input_report_key(dev, BTN_TOOL_FINGER, 0);
167 priv->prev_fin = fin;
169 if (z > 30) input_report_key(dev, BTN_TOUCH, 1);
170 if (z < 25) input_report_key(dev, BTN_TOUCH, 0);
173 input_report_abs(dev, ABS_X, x);
174 input_report_abs(dev, ABS_Y, y);
177 input_report_abs(dev, ABS_PRESSURE, z);
178 input_report_key(dev, BTN_TOOL_FINGER, z > 0);
180 if (priv->i->flags & ALPS_WHEEL)
181 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07));
183 if (priv->i->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
184 input_report_key(dev, BTN_FORWARD, forward);
185 input_report_key(dev, BTN_BACK, back);
191 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
193 struct alps_data *priv = psmouse->private;
195 if ((psmouse->packet[0] & 0xc8) == 0x08) { /* PS/2 packet */
196 if (psmouse->pktcnt == 3) {
197 alps_process_packet(psmouse);
198 return PSMOUSE_FULL_PACKET;
200 return PSMOUSE_GOOD_DATA;
203 if ((psmouse->packet[0] & priv->i->mask0) != priv->i->byte0)
204 return PSMOUSE_BAD_DATA;
206 /* Bytes 2 - 6 should have 0 in the highest bit */
207 if (psmouse->pktcnt >= 2 && psmouse->pktcnt <= 6 &&
208 (psmouse->packet[psmouse->pktcnt - 1] & 0x80))
209 return PSMOUSE_BAD_DATA;
211 if (psmouse->pktcnt == 6) {
212 alps_process_packet(psmouse);
213 return PSMOUSE_FULL_PACKET;
216 return PSMOUSE_GOOD_DATA;
219 static const struct alps_model_info *alps_get_model(struct psmouse *psmouse, int *version)
221 struct ps2dev *ps2dev = &psmouse->ps2dev;
222 static const unsigned char rates[] = { 0, 10, 20, 40, 60, 80, 100, 200 };
223 unsigned char param[4];
227 * First try "E6 report".
228 * ALPS should return 0,0,10 or 0,0,100
231 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES) ||
232 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
233 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
234 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11))
237 param[0] = param[1] = param[2] = 0xff;
238 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
241 dbg("E6 report: %2.2x %2.2x %2.2x", param[0], param[1], param[2]);
243 if (param[0] != 0 || param[1] != 0 || (param[2] != 10 && param[2] != 100))
247 * Now try "E7 report". Allowed responses are in
248 * alps_model_data[].signature
251 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES) ||
252 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
253 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
254 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21))
257 param[0] = param[1] = param[2] = 0xff;
258 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
261 dbg("E7 report: %2.2x %2.2x %2.2x", param[0], param[1], param[2]);
264 for (i = 0; i < ARRAY_SIZE(rates) && param[2] != rates[i]; i++)
266 *version = (param[0] << 8) | (param[1] << 4) | i;
269 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++)
270 if (!memcmp(param, alps_model_data[i].signature,
271 sizeof(alps_model_data[i].signature)))
272 return alps_model_data + i;
278 * For DualPoint devices select the device that should respond to
279 * subsequent commands. It looks like glidepad is behind stickpointer,
280 * I'd thought it would be other way around...
282 static int alps_passthrough_mode(struct psmouse *psmouse, int enable)
284 struct ps2dev *ps2dev = &psmouse->ps2dev;
285 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11;
287 if (ps2_command(ps2dev, NULL, cmd) ||
288 ps2_command(ps2dev, NULL, cmd) ||
289 ps2_command(ps2dev, NULL, cmd) ||
290 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
293 /* we may get 3 more bytes, just ignore them */
294 ps2_drain(ps2dev, 3, 100);
299 static int alps_absolute_mode(struct psmouse *psmouse)
301 struct ps2dev *ps2dev = &psmouse->ps2dev;
303 /* Try ALPS magic knock - 4 disable before enable */
304 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
305 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
306 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
307 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
308 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE))
312 * Switch mouse to poll (remote) mode so motion data will not
315 return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL);
318 static int alps_get_status(struct psmouse *psmouse, char *param)
320 struct ps2dev *ps2dev = &psmouse->ps2dev;
322 /* Get status: 0xF5 0xF5 0xF5 0xE9 */
323 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
324 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
325 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
326 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
329 dbg("Status: %2.2x %2.2x %2.2x", param[0], param[1], param[2]);
335 * Turn touchpad tapping on or off. The sequences are:
336 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable,
337 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable.
338 * My guess that 0xE9 (GetInfo) is here as a sync point.
339 * For models that also have stickpointer (DualPoints) its tapping
340 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but
341 * we don't fiddle with it.
343 static int alps_tap_mode(struct psmouse *psmouse, int enable)
345 struct ps2dev *ps2dev = &psmouse->ps2dev;
346 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES;
347 unsigned char tap_arg = enable ? 0x0A : 0x00;
348 unsigned char param[4];
350 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) ||
351 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
352 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
353 ps2_command(ps2dev, &tap_arg, cmd))
356 if (alps_get_status(psmouse, param))
363 * alps_poll() - poll the touchpad for current motion packet.
366 static int alps_poll(struct psmouse *psmouse)
368 struct alps_data *priv = psmouse->private;
369 unsigned char buf[6];
372 if (priv->i->flags & ALPS_PASS)
373 alps_passthrough_mode(psmouse, 1);
375 poll_failed = ps2_command(&psmouse->ps2dev, buf,
376 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0;
378 if (priv->i->flags & ALPS_PASS)
379 alps_passthrough_mode(psmouse, 0);
381 if (poll_failed || (buf[0] & priv->i->mask0) != priv->i->byte0)
384 if ((psmouse->badbyte & 0xc8) == 0x08) {
386 * Poll the track stick ...
388 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8)))
392 memcpy(psmouse->packet, buf, sizeof(buf));
396 static int alps_hw_init(struct psmouse *psmouse, int *version)
398 struct alps_data *priv = psmouse->private;
400 priv->i = alps_get_model(psmouse, version);
404 if ((priv->i->flags & ALPS_PASS) && alps_passthrough_mode(psmouse, 1))
407 if (alps_tap_mode(psmouse, 1)) {
408 printk(KERN_WARNING "alps.c: Failed to enable hardware tapping\n");
412 if (alps_absolute_mode(psmouse)) {
413 printk(KERN_ERR "alps.c: Failed to enable absolute mode\n");
417 if ((priv->i->flags & ALPS_PASS) && alps_passthrough_mode(psmouse, 0))
420 /* ALPS needs stream mode, otherwise it won't report any data */
421 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) {
422 printk(KERN_ERR "alps.c: Failed to enable stream mode\n");
429 static int alps_reconnect(struct psmouse *psmouse)
431 psmouse_reset(psmouse);
433 if (alps_hw_init(psmouse, NULL))
439 static void alps_disconnect(struct psmouse *psmouse)
441 struct alps_data *priv = psmouse->private;
443 psmouse_reset(psmouse);
444 input_unregister_device(priv->dev2);
448 int alps_init(struct psmouse *psmouse)
450 struct alps_data *priv;
451 struct input_dev *dev1 = psmouse->dev, *dev2;
454 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL);
455 dev2 = input_allocate_device();
460 psmouse->private = priv;
462 if (alps_hw_init(psmouse, &version))
465 dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY);
466 dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH);
467 dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER);
468 dev1->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_LEFT) |
469 BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
471 dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS);
472 input_set_abs_params(dev1, ABS_X, 0, 1023, 0, 0);
473 input_set_abs_params(dev1, ABS_Y, 0, 767, 0, 0);
474 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
476 if (priv->i->flags & ALPS_WHEEL) {
477 dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL);
478 dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL);
481 if (priv->i->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
482 dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD);
483 dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK);
486 snprintf(priv->phys, sizeof(priv->phys), "%s/input1", psmouse->ps2dev.serio->phys);
487 dev2->phys = priv->phys;
488 dev2->name = (priv->i->flags & ALPS_DUALPOINT) ? "DualPoint Stick" : "PS/2 Mouse";
489 dev2->id.bustype = BUS_I8042;
490 dev2->id.vendor = 0x0002;
491 dev2->id.product = PSMOUSE_ALPS;
492 dev2->id.version = 0x0000;
493 dev2->dev.parent = &psmouse->ps2dev.serio->dev;
495 dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
496 dev2->relbit[BIT_WORD(REL_X)] |= BIT_MASK(REL_X) | BIT_MASK(REL_Y);
497 dev2->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_LEFT) |
498 BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
500 if (input_register_device(priv->dev2))
503 psmouse->protocol_handler = alps_process_byte;
504 psmouse->poll = alps_poll;
505 psmouse->disconnect = alps_disconnect;
506 psmouse->reconnect = alps_reconnect;
507 psmouse->pktsize = 6;
509 /* We are having trouble resyncing ALPS touchpads so disable it for now */
510 psmouse->resync_time = 0;
515 psmouse_reset(psmouse);
516 input_free_device(dev2);
518 psmouse->private = NULL;
522 int alps_detect(struct psmouse *psmouse, int set_properties)
525 const struct alps_model_info *model;
527 model = alps_get_model(psmouse, &version);
531 if (set_properties) {
532 psmouse->vendor = "ALPS";
533 psmouse->name = model->flags & ALPS_DUALPOINT ?
534 "DualPoint TouchPad" : "GlidePoint";
535 psmouse->model = version;