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 { { 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, 0x02, 0x0a }, 0xf8, 0xf8, 0 },
52 { { 0x73, 0x02, 0x14 }, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Ahtec Laptop */
53 { { 0x20, 0x02, 0x0e }, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* XXX */
54 { { 0x22, 0x02, 0x0a }, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT },
55 { { 0x22, 0x02, 0x14 }, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D600 */
59 * XXX - this entry is suspicious. First byte has zero lower nibble,
60 * which is what a normal mouse would report. Also, the value 0x0e
61 * isn't valid per PS/2 spec.
65 * ALPS abolute Mode - new format
67 * byte 0: 1 ? ? ? 1 ? ? ?
68 * byte 1: 0 x6 x5 x4 x3 x2 x1 x0
69 * byte 2: 0 x10 x9 x8 x7 ? fin ges
70 * byte 3: 0 y9 y8 y7 1 M R L
71 * byte 4: 0 y6 y5 y4 y3 y2 y1 y0
72 * byte 5: 0 z6 z5 z4 z3 z2 z1 z0
74 * ?'s can have different meanings on different models,
75 * such as wheel rotation, extra buttons, stick buttons
76 * on a dualpoint, etc.
79 static void alps_process_packet(struct psmouse *psmouse)
81 struct alps_data *priv = psmouse->private;
82 unsigned char *packet = psmouse->packet;
83 struct input_dev *dev = psmouse->dev;
84 struct input_dev *dev2 = priv->dev2;
85 int x, y, z, ges, fin, left, right, middle;
86 int back = 0, forward = 0;
88 if ((packet[0] & 0xc8) == 0x08) { /* 3-byte PS/2 packet */
89 input_report_key(dev2, BTN_LEFT, packet[0] & 1);
90 input_report_key(dev2, BTN_RIGHT, packet[0] & 2);
91 input_report_key(dev2, BTN_MIDDLE, packet[0] & 4);
92 input_report_rel(dev2, REL_X,
93 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0);
94 input_report_rel(dev2, REL_Y,
95 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0);
100 if (priv->i->flags & ALPS_OLDPROTO) {
101 left = packet[2] & 0x10;
102 right = packet[2] & 0x08;
104 x = packet[1] | ((packet[0] & 0x07) << 7);
105 y = packet[4] | ((packet[3] & 0x07) << 7);
108 left = packet[3] & 1;
109 right = packet[3] & 2;
110 middle = packet[3] & 4;
111 x = packet[1] | ((packet[2] & 0x78) << (7 - 3));
112 y = packet[4] | ((packet[3] & 0x70) << (7 - 4));
116 if (priv->i->flags & ALPS_FW_BK_1) {
117 back = packet[2] & 4;
118 forward = packet[0] & 0x10;
121 if (priv->i->flags & ALPS_FW_BK_2) {
122 back = packet[3] & 4;
123 forward = packet[2] & 4;
124 if ((middle = forward && back))
131 input_report_key(dev, BTN_LEFT, left);
132 input_report_key(dev, BTN_RIGHT, right);
133 input_report_key(dev, BTN_MIDDLE, middle);
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));
143 /* Convert hardware tap to a reasonable Z value */
144 if (ges && !fin) z = 40;
147 * A "tap and drag" operation is reported by the hardware as a transition
148 * from (!fin && ges) to (fin && ges). This should be translated to the
149 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually.
151 if (ges && fin && !priv->prev_fin) {
152 input_report_abs(dev, ABS_X, x);
153 input_report_abs(dev, ABS_Y, y);
154 input_report_abs(dev, ABS_PRESSURE, 0);
155 input_report_key(dev, BTN_TOOL_FINGER, 0);
158 priv->prev_fin = fin;
160 if (z > 30) input_report_key(dev, BTN_TOUCH, 1);
161 if (z < 25) input_report_key(dev, BTN_TOUCH, 0);
164 input_report_abs(dev, ABS_X, x);
165 input_report_abs(dev, ABS_Y, y);
168 input_report_abs(dev, ABS_PRESSURE, z);
169 input_report_key(dev, BTN_TOOL_FINGER, z > 0);
171 if (priv->i->flags & ALPS_WHEEL)
172 input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07));
174 if (priv->i->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
175 input_report_key(dev, BTN_FORWARD, forward);
176 input_report_key(dev, BTN_BACK, back);
182 static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
184 struct alps_data *priv = psmouse->private;
186 if ((psmouse->packet[0] & 0xc8) == 0x08) { /* PS/2 packet */
187 if (psmouse->pktcnt == 3) {
188 alps_process_packet(psmouse);
189 return PSMOUSE_FULL_PACKET;
191 return PSMOUSE_GOOD_DATA;
194 if ((psmouse->packet[0] & priv->i->mask0) != priv->i->byte0)
195 return PSMOUSE_BAD_DATA;
197 /* Bytes 2 - 6 should have 0 in the highest bit */
198 if (psmouse->pktcnt >= 2 && psmouse->pktcnt <= 6 &&
199 (psmouse->packet[psmouse->pktcnt - 1] & 0x80))
200 return PSMOUSE_BAD_DATA;
202 if (psmouse->pktcnt == 6) {
203 alps_process_packet(psmouse);
204 return PSMOUSE_FULL_PACKET;
207 return PSMOUSE_GOOD_DATA;
210 static const struct alps_model_info *alps_get_model(struct psmouse *psmouse, int *version)
212 struct ps2dev *ps2dev = &psmouse->ps2dev;
213 static const unsigned char rates[] = { 0, 10, 20, 40, 60, 80, 100, 200 };
214 unsigned char param[4];
218 * First try "E6 report".
219 * ALPS should return 0,0,10 or 0,0,100
222 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES) ||
223 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
224 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
225 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11))
228 param[0] = param[1] = param[2] = 0xff;
229 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
232 dbg("E6 report: %2.2x %2.2x %2.2x", param[0], param[1], param[2]);
234 if (param[0] != 0 || param[1] != 0 || (param[2] != 10 && param[2] != 100))
238 * Now try "E7 report". Allowed responses are in
239 * alps_model_data[].signature
242 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES) ||
243 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
244 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
245 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21))
248 param[0] = param[1] = param[2] = 0xff;
249 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
252 dbg("E7 report: %2.2x %2.2x %2.2x", param[0], param[1], param[2]);
254 for (i = 0; i < ARRAY_SIZE(rates) && param[2] != rates[i]; i++);
255 *version = (param[0] << 8) | (param[1] << 4) | i;
257 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++)
258 if (!memcmp(param, alps_model_data[i].signature, sizeof(alps_model_data[i].signature)))
259 return alps_model_data + i;
265 * For DualPoint devices select the device that should respond to
266 * subsequent commands. It looks like glidepad is behind stickpointer,
267 * I'd thought it would be other way around...
269 static int alps_passthrough_mode(struct psmouse *psmouse, int enable)
271 struct ps2dev *ps2dev = &psmouse->ps2dev;
272 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11;
274 if (ps2_command(ps2dev, NULL, cmd) ||
275 ps2_command(ps2dev, NULL, cmd) ||
276 ps2_command(ps2dev, NULL, cmd) ||
277 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
280 /* we may get 3 more bytes, just ignore them */
281 ps2_drain(ps2dev, 3, 100);
286 static int alps_absolute_mode(struct psmouse *psmouse)
288 struct ps2dev *ps2dev = &psmouse->ps2dev;
290 /* Try ALPS magic knock - 4 disable before enable */
291 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
292 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
293 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
294 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
295 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE))
299 * Switch mouse to poll (remote) mode so motion data will not
302 return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL);
305 static int alps_get_status(struct psmouse *psmouse, char *param)
307 struct ps2dev *ps2dev = &psmouse->ps2dev;
309 /* Get status: 0xF5 0xF5 0xF5 0xE9 */
310 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
311 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
312 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
313 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
316 dbg("Status: %2.2x %2.2x %2.2x", param[0], param[1], param[2]);
322 * Turn touchpad tapping on or off. The sequences are:
323 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable,
324 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable.
325 * My guess that 0xE9 (GetInfo) is here as a sync point.
326 * For models that also have stickpointer (DualPoints) its tapping
327 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but
328 * we don't fiddle with it.
330 static int alps_tap_mode(struct psmouse *psmouse, int enable)
332 struct ps2dev *ps2dev = &psmouse->ps2dev;
333 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES;
334 unsigned char tap_arg = enable ? 0x0A : 0x00;
335 unsigned char param[4];
337 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) ||
338 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
339 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
340 ps2_command(ps2dev, &tap_arg, cmd))
343 if (alps_get_status(psmouse, param))
350 * alps_poll() - poll the touchpad for current motion packet.
353 static int alps_poll(struct psmouse *psmouse)
355 struct alps_data *priv = psmouse->private;
356 unsigned char buf[6];
359 if (priv->i->flags & ALPS_PASS)
360 alps_passthrough_mode(psmouse, 1);
362 poll_failed = ps2_command(&psmouse->ps2dev, buf,
363 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0;
365 if (priv->i->flags & ALPS_PASS)
366 alps_passthrough_mode(psmouse, 0);
368 if (poll_failed || (buf[0] & priv->i->mask0) != priv->i->byte0)
371 if ((psmouse->badbyte & 0xc8) == 0x08) {
373 * Poll the track stick ...
375 if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8)))
379 memcpy(psmouse->packet, buf, sizeof(buf));
383 static int alps_reconnect(struct psmouse *psmouse)
385 struct alps_data *priv = psmouse->private;
388 psmouse_reset(psmouse);
390 if (!(priv->i = alps_get_model(psmouse, &version)))
393 if ((priv->i->flags & ALPS_PASS) && alps_passthrough_mode(psmouse, 1))
396 if (alps_tap_mode(psmouse, 1)) {
397 printk(KERN_WARNING "alps.c: Failed to reenable hardware tapping\n");
401 if (alps_absolute_mode(psmouse)) {
402 printk(KERN_ERR "alps.c: Failed to reenable absolute mode\n");
406 if ((priv->i->flags & ALPS_PASS) && alps_passthrough_mode(psmouse, 0))
412 static void alps_disconnect(struct psmouse *psmouse)
414 struct alps_data *priv = psmouse->private;
416 psmouse_reset(psmouse);
417 input_unregister_device(priv->dev2);
421 int alps_init(struct psmouse *psmouse)
423 struct alps_data *priv;
424 struct input_dev *dev1 = psmouse->dev, *dev2;
427 priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL);
428 dev2 = input_allocate_device();
434 priv->i = alps_get_model(psmouse, &version);
438 if ((priv->i->flags & ALPS_PASS) && alps_passthrough_mode(psmouse, 1))
441 if (alps_tap_mode(psmouse, 1))
442 printk(KERN_WARNING "alps.c: Failed to enable hardware tapping\n");
444 if (alps_absolute_mode(psmouse)) {
445 printk(KERN_ERR "alps.c: Failed to enable absolute mode\n");
449 if ((priv->i->flags & ALPS_PASS) && alps_passthrough_mode(psmouse, 0))
452 dev1->evbit[LONG(EV_KEY)] |= BIT(EV_KEY);
453 dev1->keybit[LONG(BTN_TOUCH)] |= BIT(BTN_TOUCH);
454 dev1->keybit[LONG(BTN_TOOL_FINGER)] |= BIT(BTN_TOOL_FINGER);
455 dev1->keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
457 dev1->evbit[LONG(EV_ABS)] |= BIT(EV_ABS);
458 input_set_abs_params(dev1, ABS_X, 0, 1023, 0, 0);
459 input_set_abs_params(dev1, ABS_Y, 0, 767, 0, 0);
460 input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0);
462 if (priv->i->flags & ALPS_WHEEL) {
463 dev1->evbit[LONG(EV_REL)] |= BIT(EV_REL);
464 dev1->relbit[LONG(REL_WHEEL)] |= BIT(REL_WHEEL);
467 if (priv->i->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) {
468 dev1->keybit[LONG(BTN_FORWARD)] |= BIT(BTN_FORWARD);
469 dev1->keybit[LONG(BTN_BACK)] |= BIT(BTN_BACK);
472 snprintf(priv->phys, sizeof(priv->phys), "%s/input1", psmouse->ps2dev.serio->phys);
473 dev2->phys = priv->phys;
474 dev2->name = (priv->i->flags & ALPS_DUALPOINT) ? "DualPoint Stick" : "PS/2 Mouse";
475 dev2->id.bustype = BUS_I8042;
476 dev2->id.vendor = 0x0002;
477 dev2->id.product = PSMOUSE_ALPS;
478 dev2->id.version = 0x0000;
480 dev2->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
481 dev2->relbit[LONG(REL_X)] |= BIT(REL_X) | BIT(REL_Y);
482 dev2->keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
484 if (input_register_device(priv->dev2))
487 psmouse->protocol_handler = alps_process_byte;
488 psmouse->poll = alps_poll;
489 psmouse->disconnect = alps_disconnect;
490 psmouse->reconnect = alps_reconnect;
491 psmouse->pktsize = 6;
493 /* We are having trouble resyncing ALPS touchpads so disable it for now */
494 psmouse->resync_time = 0;
496 psmouse->private = priv;
500 psmouse_reset(psmouse);
501 input_free_device(dev2);
506 int alps_detect(struct psmouse *psmouse, int set_properties)
509 const struct alps_model_info *model;
511 model = alps_get_model(psmouse, &version);
515 if (set_properties) {
516 psmouse->vendor = "ALPS";
517 psmouse->name = model->flags & ALPS_DUALPOINT ?
518 "DualPoint TouchPad" : "GlidePoint";
519 psmouse->model = version;