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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/input/mouse/alps.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/input/mouse/alps.c')
-rw-r--r--drivers/input/mouse/alps.c477
1 files changed, 477 insertions, 0 deletions
diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
new file mode 100644
index 000000000000..1f85a9718c89
--- /dev/null
+++ b/drivers/input/mouse/alps.c
@@ -0,0 +1,477 @@
1/*
2 * ALPS touchpad PS/2 mouse driver
3 *
4 * Copyright (c) 2003 Neil Brown <neilb@cse.unsw.edu.au>
5 * Copyright (c) 2003 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 0x04
34#define ALPS_4BTN 0x08
35#define ALPS_OLDPROTO 0x10
36#define ALPS_PASS 0x20
37
38static struct alps_model_info alps_model_data[] = {
39 { { 0x33, 0x02, 0x0a }, 0x88, 0xf8, ALPS_OLDPROTO }, /* UMAX-530T */
40 { { 0x53, 0x02, 0x0a }, 0xf8, 0xf8, 0 },
41 { { 0x53, 0x02, 0x14 }, 0xf8, 0xf8, 0 },
42 { { 0x63, 0x02, 0x0a }, 0xf8, 0xf8, 0 },
43 { { 0x63, 0x02, 0x14 }, 0xf8, 0xf8, 0 },
44 { { 0x63, 0x02, 0x28 }, 0xf8, 0xf8, 0 },
45 { { 0x63, 0x02, 0x3c }, 0x8f, 0x8f, ALPS_WHEEL }, /* Toshiba Satellite S2400-103 */
46 { { 0x63, 0x02, 0x50 }, 0xef, 0xef, ALPS_FW_BK }, /* NEC Versa L320 */
47 { { 0x63, 0x02, 0x64 }, 0xf8, 0xf8, 0 },
48 { { 0x63, 0x03, 0xc8 }, 0xf8, 0xf8, ALPS_PASS }, /* Dell Latitude D800 */
49 { { 0x73, 0x02, 0x0a }, 0xf8, 0xf8, 0 },
50 { { 0x73, 0x02, 0x14 }, 0xf8, 0xf8, 0 },
51 { { 0x20, 0x02, 0x0e }, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* XXX */
52 { { 0x22, 0x02, 0x0a }, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT },
53 { { 0x22, 0x02, 0x14 }, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D600 */
54};
55
56/*
57 * XXX - this entry is suspicious. First byte has zero lower nibble,
58 * which is what a normal mouse would report. Also, the value 0x0e
59 * isn't valid per PS/2 spec.
60 */
61
62/*
63 * ALPS abolute Mode - new format
64 *
65 * byte 0: 1 ? ? ? 1 ? ? ?
66 * byte 1: 0 x6 x5 x4 x3 x2 x1 x0
67 * byte 2: 0 x10 x9 x8 x7 ? fin ges
68 * byte 3: 0 y9 y8 y7 1 M R L
69 * byte 4: 0 y6 y5 y4 y3 y2 y1 y0
70 * byte 5: 0 z6 z5 z4 z3 z2 z1 z0
71 *
72 * ?'s can have different meanings on different models,
73 * such as wheel rotation, extra buttons, stick buttons
74 * on a dualpoint, etc.
75 */
76
77static void alps_process_packet(struct psmouse *psmouse, struct pt_regs *regs)
78{
79 struct alps_data *priv = psmouse->private;
80 unsigned char *packet = psmouse->packet;
81 struct input_dev *dev = &psmouse->dev;
82 struct input_dev *dev2 = &priv->dev2;
83 int x, y, z, ges, fin, left, right, middle;
84
85 input_regs(dev, regs);
86
87 if ((packet[0] & 0xc8) == 0x08) { /* 3-byte PS/2 packet */
88 input_report_key(dev2, BTN_LEFT, packet[0] & 1);
89 input_report_key(dev2, BTN_RIGHT, packet[0] & 2);
90 input_report_key(dev2, BTN_MIDDLE, packet[0] & 4);
91 input_report_rel(dev2, REL_X,
92 packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0);
93 input_report_rel(dev2, REL_Y,
94 packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0);
95 input_sync(dev2);
96 return;
97 }
98
99 if (priv->i->flags & ALPS_OLDPROTO) {
100 left = packet[2] & 0x08;
101 right = packet[2] & 0x10;
102 middle = 0;
103 x = packet[1] | ((packet[0] & 0x07) << 7);
104 y = packet[4] | ((packet[3] & 0x07) << 7);
105 z = packet[5];
106 } else {
107 left = packet[3] & 1;
108 right = packet[3] & 2;
109 middle = packet[3] & 4;
110 x = packet[1] | ((packet[2] & 0x78) << (7 - 3));
111 y = packet[4] | ((packet[3] & 0x70) << (7 - 4));
112 z = packet[5];
113 }
114
115 ges = packet[2] & 1;
116 fin = packet[2] & 2;
117
118 input_report_key(dev, BTN_LEFT, left);
119 input_report_key(dev, BTN_RIGHT, right);
120 input_report_key(dev, BTN_MIDDLE, middle);
121
122 if ((priv->i->flags & ALPS_DUALPOINT) && z == 127) {
123 input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x));
124 input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y));
125 input_sync(dev);
126 input_sync(dev2);
127 return;
128 }
129
130 /* Convert hardware tap to a reasonable Z value */
131 if (ges && !fin) z = 40;
132
133 /*
134 * A "tap and drag" operation is reported by the hardware as a transition
135 * from (!fin && ges) to (fin && ges). This should be translated to the
136 * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually.
137 */
138 if (ges && fin && !priv->prev_fin) {
139 input_report_abs(dev, ABS_X, x);
140 input_report_abs(dev, ABS_Y, y);
141 input_report_abs(dev, ABS_PRESSURE, 0);
142 input_report_key(dev, BTN_TOOL_FINGER, 0);
143 input_sync(dev);
144 }
145 priv->prev_fin = fin;
146
147 if (z > 30) input_report_key(dev, BTN_TOUCH, 1);
148 if (z < 25) input_report_key(dev, BTN_TOUCH, 0);
149
150 if (z > 0) {
151 input_report_abs(dev, ABS_X, x);
152 input_report_abs(dev, ABS_Y, y);
153 }
154
155 input_report_abs(dev, ABS_PRESSURE, z);
156 input_report_key(dev, BTN_TOOL_FINGER, z > 0);
157
158
159 if (priv->i->flags & ALPS_WHEEL)
160 input_report_rel(dev, REL_WHEEL, ((packet[0] >> 4) & 0x07) | ((packet[2] >> 2) & 0x08));
161
162 if (priv->i->flags & ALPS_FW_BK) {
163 input_report_key(dev, BTN_FORWARD, packet[0] & 0x10);
164 input_report_key(dev, BTN_BACK, packet[2] & 0x04);
165 }
166
167 input_sync(dev);
168}
169
170static psmouse_ret_t alps_process_byte(struct psmouse *psmouse, struct pt_regs *regs)
171{
172 struct alps_data *priv = psmouse->private;
173
174 if ((psmouse->packet[0] & 0xc8) == 0x08) { /* PS/2 packet */
175 if (psmouse->pktcnt == 3) {
176 alps_process_packet(psmouse, regs);
177 return PSMOUSE_FULL_PACKET;
178 }
179 return PSMOUSE_GOOD_DATA;
180 }
181
182 if ((psmouse->packet[0] & priv->i->mask0) != priv->i->byte0)
183 return PSMOUSE_BAD_DATA;
184
185 /* Bytes 2 - 6 should have 0 in the highest bit */
186 if (psmouse->pktcnt >= 2 && psmouse->pktcnt <= 6 &&
187 (psmouse->packet[psmouse->pktcnt - 1] & 0x80))
188 return PSMOUSE_BAD_DATA;
189
190 if (psmouse->pktcnt == 6) {
191 alps_process_packet(psmouse, regs);
192 return PSMOUSE_FULL_PACKET;
193 }
194
195 return PSMOUSE_GOOD_DATA;
196}
197
198static struct alps_model_info *alps_get_model(struct psmouse *psmouse, int *version)
199{
200 struct ps2dev *ps2dev = &psmouse->ps2dev;
201 unsigned char rates[] = { 0, 10, 20, 40, 60, 80, 100, 200 };
202 unsigned char param[4];
203 int i;
204
205 /*
206 * First try "E6 report".
207 * ALPS should return 0,0,10 or 0,0,100
208 */
209 param[0] = 0;
210 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES) ||
211 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
212 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
213 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11))
214 return NULL;
215
216 param[0] = param[1] = param[2] = 0xff;
217 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
218 return NULL;
219
220 dbg("E6 report: %2.2x %2.2x %2.2x", param[0], param[1], param[2]);
221
222 if (param[0] != 0 || param[1] != 0 || (param[2] != 10 && param[2] != 100))
223 return NULL;
224
225 /*
226 * Now try "E7 report". Allowed responses are in
227 * alps_model_data[].signature
228 */
229 param[0] = 0;
230 if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES) ||
231 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
232 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) ||
233 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21))
234 return NULL;
235
236 param[0] = param[1] = param[2] = 0xff;
237 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
238 return NULL;
239
240 dbg("E7 report: %2.2x %2.2x %2.2x", param[0], param[1], param[2]);
241
242 for (i = 0; i < ARRAY_SIZE(rates) && param[2] != rates[i]; i++);
243 *version = (param[0] << 8) | (param[1] << 4) | i;
244
245 for (i = 0; i < ARRAY_SIZE(alps_model_data); i++)
246 if (!memcmp(param, alps_model_data[i].signature, sizeof(alps_model_data[i].signature)))
247 return alps_model_data + i;
248
249 return NULL;
250}
251
252/*
253 * For DualPoint devices select the device that should respond to
254 * subsequent commands. It looks like glidepad is behind stickpointer,
255 * I'd thought it would be other way around...
256 */
257static int alps_passthrough_mode(struct psmouse *psmouse, int enable)
258{
259 struct ps2dev *ps2dev = &psmouse->ps2dev;
260 unsigned char param[3];
261 int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11;
262
263 if (ps2_command(ps2dev, NULL, cmd) ||
264 ps2_command(ps2dev, NULL, cmd) ||
265 ps2_command(ps2dev, NULL, cmd) ||
266 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
267 return -1;
268
269 /* we may get 3 more bytes, just ignore them */
270 ps2_command(ps2dev, param, 0x0300);
271
272 return 0;
273}
274
275static int alps_absolute_mode(struct psmouse *psmouse)
276{
277 struct ps2dev *ps2dev = &psmouse->ps2dev;
278
279 /* Try ALPS magic knock - 4 disable before enable */
280 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
281 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
282 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
283 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
284 ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE))
285 return -1;
286
287 /*
288 * Switch mouse to poll (remote) mode so motion data will not
289 * get in our way
290 */
291 return ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL);
292}
293
294static int alps_get_status(struct psmouse *psmouse, char *param)
295{
296 struct ps2dev *ps2dev = &psmouse->ps2dev;
297
298 /* Get status: 0xF5 0xF5 0xF5 0xE9 */
299 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
300 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
301 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
302 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
303 return -1;
304
305 dbg("Status: %2.2x %2.2x %2.2x", param[0], param[1], param[2]);
306
307 return 0;
308}
309
310/*
311 * Turn touchpad tapping on or off. The sequences are:
312 * 0xE9 0xF5 0xF5 0xF3 0x0A to enable,
313 * 0xE9 0xF5 0xF5 0xE8 0x00 to disable.
314 * My guess that 0xE9 (GetInfo) is here as a sync point.
315 * For models that also have stickpointer (DualPoints) its tapping
316 * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but
317 * we don't fiddle with it.
318 */
319static int alps_tap_mode(struct psmouse *psmouse, int enable)
320{
321 struct ps2dev *ps2dev = &psmouse->ps2dev;
322 int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES;
323 unsigned char tap_arg = enable ? 0x0A : 0x00;
324 unsigned char param[4];
325
326 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) ||
327 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
328 ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
329 ps2_command(ps2dev, &tap_arg, cmd))
330 return -1;
331
332 if (alps_get_status(psmouse, param))
333 return -1;
334
335 return 0;
336}
337
338static int alps_reconnect(struct psmouse *psmouse)
339{
340 struct alps_data *priv = psmouse->private;
341 unsigned char param[4];
342 int version;
343
344 if (!(priv->i = alps_get_model(psmouse, &version)))
345 return -1;
346
347 if (priv->i->flags & ALPS_PASS && alps_passthrough_mode(psmouse, 1))
348 return -1;
349
350 if (alps_get_status(psmouse, param))
351 return -1;
352
353 if (param[0] & 0x04)
354 alps_tap_mode(psmouse, 1);
355
356 if (alps_absolute_mode(psmouse)) {
357 printk(KERN_ERR "alps.c: Failed to enable absolute mode\n");
358 return -1;
359 }
360
361 if (priv->i->flags == ALPS_PASS && alps_passthrough_mode(psmouse, 0))
362 return -1;
363
364 return 0;
365}
366
367static void alps_disconnect(struct psmouse *psmouse)
368{
369 struct alps_data *priv = psmouse->private;
370 psmouse_reset(psmouse);
371 input_unregister_device(&priv->dev2);
372 kfree(priv);
373}
374
375int alps_init(struct psmouse *psmouse)
376{
377 struct alps_data *priv;
378 unsigned char param[4];
379 int version;
380
381 psmouse->private = priv = kmalloc(sizeof(struct alps_data), GFP_KERNEL);
382 if (!priv)
383 goto init_fail;
384 memset(priv, 0, sizeof(struct alps_data));
385
386 if (!(priv->i = alps_get_model(psmouse, &version)))
387 goto init_fail;
388
389 if ((priv->i->flags & ALPS_PASS) && alps_passthrough_mode(psmouse, 1))
390 goto init_fail;
391
392 if (alps_get_status(psmouse, param)) {
393 printk(KERN_ERR "alps.c: touchpad status report request failed\n");
394 goto init_fail;
395 }
396
397 if (param[0] & 0x04) {
398 printk(KERN_INFO " Enabling hardware tapping\n");
399 if (alps_tap_mode(psmouse, 1))
400 printk(KERN_WARNING "alps.c: Failed to enable hardware tapping\n");
401 }
402
403 if (alps_absolute_mode(psmouse)) {
404 printk(KERN_ERR "alps.c: Failed to enable absolute mode\n");
405 goto init_fail;
406 }
407
408 if ((priv->i->flags & ALPS_PASS) && alps_passthrough_mode(psmouse, 0))
409 goto init_fail;
410
411 psmouse->dev.evbit[LONG(EV_KEY)] |= BIT(EV_KEY);
412 psmouse->dev.keybit[LONG(BTN_TOUCH)] |= BIT(BTN_TOUCH);
413 psmouse->dev.keybit[LONG(BTN_TOOL_FINGER)] |= BIT(BTN_TOOL_FINGER);
414 psmouse->dev.keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
415
416 psmouse->dev.evbit[LONG(EV_ABS)] |= BIT(EV_ABS);
417 input_set_abs_params(&psmouse->dev, ABS_X, 0, 1023, 0, 0);
418 input_set_abs_params(&psmouse->dev, ABS_Y, 0, 767, 0, 0);
419 input_set_abs_params(&psmouse->dev, ABS_PRESSURE, 0, 127, 0, 0);
420
421 if (priv->i->flags & ALPS_WHEEL) {
422 psmouse->dev.evbit[LONG(EV_REL)] |= BIT(EV_REL);
423 psmouse->dev.relbit[LONG(REL_WHEEL)] |= BIT(REL_WHEEL);
424 }
425
426 if (priv->i->flags & ALPS_FW_BK) {
427 psmouse->dev.keybit[LONG(BTN_FORWARD)] |= BIT(BTN_FORWARD);
428 psmouse->dev.keybit[LONG(BTN_BACK)] |= BIT(BTN_BACK);
429 }
430
431 sprintf(priv->phys, "%s/input1", psmouse->ps2dev.serio->phys);
432 priv->dev2.phys = priv->phys;
433 priv->dev2.name = (priv->i->flags & ALPS_DUALPOINT) ? "DualPoint Stick" : "PS/2 Mouse";
434 priv->dev2.id.bustype = BUS_I8042;
435 priv->dev2.id.vendor = 0x0002;
436 priv->dev2.id.product = PSMOUSE_ALPS;
437 priv->dev2.id.version = 0x0000;
438
439 priv->dev2.evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
440 priv->dev2.relbit[LONG(REL_X)] |= BIT(REL_X) | BIT(REL_Y);
441 priv->dev2.keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
442
443 input_register_device(&priv->dev2);
444
445 printk(KERN_INFO "input: %s on %s\n", priv->dev2.name, psmouse->ps2dev.serio->phys);
446
447 psmouse->protocol_handler = alps_process_byte;
448 psmouse->disconnect = alps_disconnect;
449 psmouse->reconnect = alps_reconnect;
450 psmouse->pktsize = 6;
451
452 return 0;
453
454init_fail:
455 kfree(priv);
456 return -1;
457}
458
459int alps_detect(struct psmouse *psmouse, int set_properties)
460{
461 int version;
462 struct alps_model_info *model;
463
464 if (!(model = alps_get_model(psmouse, &version)))
465 return -1;
466
467 if (set_properties) {
468 psmouse->vendor = "ALPS";
469 if (model->flags & ALPS_DUALPOINT)
470 psmouse->name = "DualPoint TouchPad";
471 else
472 psmouse->name = "GlidePoint";
473 psmouse->model = version;
474 }
475 return 0;
476}
477
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-07 09:48:21 -0500