Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * PS/2 mouse driver | |
3 | * | |
4 | * Copyright (c) 1999-2002 Vojtech Pavlik | |
5 | * Copyright (c) 2003-2004 Dmitry Torokhov | |
6 | */ | |
7 | ||
8 | /* | |
9 | * This program is free software; you can redistribute it and/or modify it | |
10 | * under the terms of the GNU General Public License version 2 as published by | |
11 | * the Free Software Foundation. | |
12 | */ | |
13 | ||
14 | #include <linux/delay.h> | |
15 | #include <linux/module.h> | |
16 | #include <linux/moduleparam.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/interrupt.h> | |
19 | #include <linux/input.h> | |
20 | #include <linux/serio.h> | |
21 | #include <linux/init.h> | |
22 | #include <linux/libps2.h> | |
c14471dc IM |
23 | #include <linux/mutex.h> |
24 | ||
1da177e4 LT |
25 | #include "psmouse.h" |
26 | #include "synaptics.h" | |
27 | #include "logips2pp.h" | |
28 | #include "alps.h" | |
02d7f589 | 29 | #include "lifebook.h" |
541e316a | 30 | #include "trackpoint.h" |
1da177e4 LT |
31 | |
32 | #define DRIVER_DESC "PS/2 mouse driver" | |
33 | ||
34 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>"); | |
35 | MODULE_DESCRIPTION(DRIVER_DESC); | |
36 | MODULE_LICENSE("GPL"); | |
37 | ||
dbf4ccd6 | 38 | static unsigned int psmouse_max_proto = PSMOUSE_AUTO; |
1da177e4 LT |
39 | static int psmouse_set_maxproto(const char *val, struct kernel_param *kp); |
40 | static int psmouse_get_maxproto(char *buffer, struct kernel_param *kp); | |
1da177e4 LT |
41 | #define param_check_proto_abbrev(name, p) __param_check(name, p, unsigned int) |
42 | #define param_set_proto_abbrev psmouse_set_maxproto | |
43 | #define param_get_proto_abbrev psmouse_get_maxproto | |
44 | module_param_named(proto, psmouse_max_proto, proto_abbrev, 0644); | |
dbf4ccd6 | 45 | MODULE_PARM_DESC(proto, "Highest protocol extension to probe (bare, imps, exps, any). Useful for KVM switches."); |
1da177e4 LT |
46 | |
47 | static unsigned int psmouse_resolution = 200; | |
48 | module_param_named(resolution, psmouse_resolution, uint, 0644); | |
49 | MODULE_PARM_DESC(resolution, "Resolution, in dpi."); | |
50 | ||
51 | static unsigned int psmouse_rate = 100; | |
52 | module_param_named(rate, psmouse_rate, uint, 0644); | |
53 | MODULE_PARM_DESC(rate, "Report rate, in reports per second."); | |
54 | ||
55 | static unsigned int psmouse_smartscroll = 1; | |
56 | module_param_named(smartscroll, psmouse_smartscroll, bool, 0644); | |
57 | MODULE_PARM_DESC(smartscroll, "Logitech Smartscroll autorepeat, 1 = enabled (default), 0 = disabled."); | |
58 | ||
f0d5c6f4 | 59 | static unsigned int psmouse_resetafter = 5; |
1da177e4 LT |
60 | module_param_named(resetafter, psmouse_resetafter, uint, 0644); |
61 | MODULE_PARM_DESC(resetafter, "Reset device after so many bad packets (0 = never)."); | |
62 | ||
8bd0ee93 | 63 | static unsigned int psmouse_resync_time; |
f0d5c6f4 DT |
64 | module_param_named(resync_time, psmouse_resync_time, uint, 0644); |
65 | MODULE_PARM_DESC(resync_time, "How long can mouse stay idle before forcing resync (in seconds, 0 = never)."); | |
66 | ||
cfe9e888 DT |
67 | PSMOUSE_DEFINE_ATTR(protocol, S_IWUSR | S_IRUGO, |
68 | NULL, | |
69 | psmouse_attr_show_protocol, psmouse_attr_set_protocol); | |
70 | PSMOUSE_DEFINE_ATTR(rate, S_IWUSR | S_IRUGO, | |
71 | (void *) offsetof(struct psmouse, rate), | |
72 | psmouse_show_int_attr, psmouse_attr_set_rate); | |
73 | PSMOUSE_DEFINE_ATTR(resolution, S_IWUSR | S_IRUGO, | |
74 | (void *) offsetof(struct psmouse, resolution), | |
75 | psmouse_show_int_attr, psmouse_attr_set_resolution); | |
76 | PSMOUSE_DEFINE_ATTR(resetafter, S_IWUSR | S_IRUGO, | |
77 | (void *) offsetof(struct psmouse, resetafter), | |
78 | psmouse_show_int_attr, psmouse_set_int_attr); | |
f0d5c6f4 DT |
79 | PSMOUSE_DEFINE_ATTR(resync_time, S_IWUSR | S_IRUGO, |
80 | (void *) offsetof(struct psmouse, resync_time), | |
81 | psmouse_show_int_attr, psmouse_set_int_attr); | |
cfe9e888 DT |
82 | |
83 | static struct attribute *psmouse_attributes[] = { | |
84 | &psmouse_attr_protocol.dattr.attr, | |
85 | &psmouse_attr_rate.dattr.attr, | |
86 | &psmouse_attr_resolution.dattr.attr, | |
87 | &psmouse_attr_resetafter.dattr.attr, | |
f0d5c6f4 | 88 | &psmouse_attr_resync_time.dattr.attr, |
cfe9e888 DT |
89 | NULL |
90 | }; | |
91 | ||
92 | static struct attribute_group psmouse_attribute_group = { | |
93 | .attrs = psmouse_attributes, | |
94 | }; | |
1da177e4 LT |
95 | |
96 | __obsolete_setup("psmouse_noext"); | |
97 | __obsolete_setup("psmouse_resolution="); | |
98 | __obsolete_setup("psmouse_smartscroll="); | |
99 | __obsolete_setup("psmouse_resetafter="); | |
100 | __obsolete_setup("psmouse_rate="); | |
101 | ||
04df1925 | 102 | /* |
c14471dc | 103 | * psmouse_mutex protects all operations changing state of mouse |
04df1925 DT |
104 | * (connecting, disconnecting, changing rate or resolution via |
105 | * sysfs). We could use a per-device semaphore but since there | |
106 | * rarely more than one PS/2 mouse connected and since semaphore | |
107 | * is taken in "slow" paths it is not worth it. | |
108 | */ | |
c14471dc | 109 | static DEFINE_MUTEX(psmouse_mutex); |
04df1925 | 110 | |
f0d5c6f4 DT |
111 | static struct workqueue_struct *kpsmoused_wq; |
112 | ||
dbf4ccd6 DT |
113 | struct psmouse_protocol { |
114 | enum psmouse_type type; | |
e38de678 HD |
115 | const char *name; |
116 | const char *alias; | |
dbf4ccd6 DT |
117 | int maxproto; |
118 | int (*detect)(struct psmouse *, int); | |
119 | int (*init)(struct psmouse *); | |
120 | }; | |
1da177e4 LT |
121 | |
122 | /* | |
123 | * psmouse_process_byte() analyzes the PS/2 data stream and reports | |
124 | * relevant events to the input module once full packet has arrived. | |
125 | */ | |
126 | ||
7d12e780 | 127 | static psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse) |
1da177e4 | 128 | { |
2e5b636b | 129 | struct input_dev *dev = psmouse->dev; |
1da177e4 LT |
130 | unsigned char *packet = psmouse->packet; |
131 | ||
132 | if (psmouse->pktcnt < psmouse->pktsize) | |
133 | return PSMOUSE_GOOD_DATA; | |
134 | ||
135 | /* | |
136 | * Full packet accumulated, process it | |
137 | */ | |
138 | ||
1da177e4 LT |
139 | /* |
140 | * Scroll wheel on IntelliMice, scroll buttons on NetMice | |
141 | */ | |
142 | ||
143 | if (psmouse->type == PSMOUSE_IMPS || psmouse->type == PSMOUSE_GENPS) | |
144 | input_report_rel(dev, REL_WHEEL, -(signed char) packet[3]); | |
145 | ||
146 | /* | |
147 | * Scroll wheel and buttons on IntelliMouse Explorer | |
148 | */ | |
149 | ||
150 | if (psmouse->type == PSMOUSE_IMEX) { | |
b0c9ad8e PB |
151 | switch (packet[3] & 0xC0) { |
152 | case 0x80: /* vertical scroll on IntelliMouse Explorer 4.0 */ | |
153 | input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31)); | |
154 | break; | |
155 | case 0x40: /* horizontal scroll on IntelliMouse Explorer 4.0 */ | |
156 | input_report_rel(dev, REL_HWHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31)); | |
157 | break; | |
158 | case 0x00: | |
159 | case 0xC0: | |
160 | input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 8) - (int) (packet[3] & 7)); | |
161 | input_report_key(dev, BTN_SIDE, (packet[3] >> 4) & 1); | |
162 | input_report_key(dev, BTN_EXTRA, (packet[3] >> 5) & 1); | |
163 | break; | |
164 | } | |
1da177e4 LT |
165 | } |
166 | ||
167 | /* | |
168 | * Extra buttons on Genius NewNet 3D | |
169 | */ | |
170 | ||
171 | if (psmouse->type == PSMOUSE_GENPS) { | |
172 | input_report_key(dev, BTN_SIDE, (packet[0] >> 6) & 1); | |
173 | input_report_key(dev, BTN_EXTRA, (packet[0] >> 7) & 1); | |
174 | } | |
175 | ||
176 | /* | |
177 | * Extra button on ThinkingMouse | |
178 | */ | |
179 | if (psmouse->type == PSMOUSE_THINKPS) { | |
180 | input_report_key(dev, BTN_EXTRA, (packet[0] >> 3) & 1); | |
181 | /* Without this bit of weirdness moving up gives wildly high Y changes. */ | |
182 | packet[1] |= (packet[0] & 0x40) << 1; | |
183 | } | |
184 | ||
185 | /* | |
186 | * Generic PS/2 Mouse | |
187 | */ | |
188 | ||
189 | input_report_key(dev, BTN_LEFT, packet[0] & 1); | |
190 | input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1); | |
191 | input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1); | |
192 | ||
193 | input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0); | |
194 | input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0); | |
195 | ||
196 | input_sync(dev); | |
197 | ||
198 | return PSMOUSE_FULL_PACKET; | |
199 | } | |
200 | ||
201 | /* | |
f0d5c6f4 DT |
202 | * __psmouse_set_state() sets new psmouse state and resets all flags. |
203 | */ | |
204 | ||
205 | static inline void __psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state) | |
206 | { | |
207 | psmouse->state = new_state; | |
208 | psmouse->pktcnt = psmouse->out_of_sync = 0; | |
209 | psmouse->ps2dev.flags = 0; | |
210 | psmouse->last = jiffies; | |
211 | } | |
212 | ||
213 | ||
214 | /* | |
215 | * psmouse_set_state() sets new psmouse state and resets all flags and | |
216 | * counters while holding serio lock so fighting with interrupt handler | |
217 | * is not a concern. | |
218 | */ | |
219 | ||
220 | static void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state) | |
221 | { | |
222 | serio_pause_rx(psmouse->ps2dev.serio); | |
223 | __psmouse_set_state(psmouse, new_state); | |
224 | serio_continue_rx(psmouse->ps2dev.serio); | |
225 | } | |
226 | ||
227 | /* | |
228 | * psmouse_handle_byte() processes one byte of the input data stream | |
229 | * by calling corresponding protocol handler. | |
230 | */ | |
231 | ||
7d12e780 | 232 | static int psmouse_handle_byte(struct psmouse *psmouse) |
f0d5c6f4 | 233 | { |
7d12e780 | 234 | psmouse_ret_t rc = psmouse->protocol_handler(psmouse); |
f0d5c6f4 DT |
235 | |
236 | switch (rc) { | |
237 | case PSMOUSE_BAD_DATA: | |
238 | if (psmouse->state == PSMOUSE_ACTIVATED) { | |
239 | printk(KERN_WARNING "psmouse.c: %s at %s lost sync at byte %d\n", | |
240 | psmouse->name, psmouse->phys, psmouse->pktcnt); | |
241 | if (++psmouse->out_of_sync == psmouse->resetafter) { | |
242 | __psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
243 | printk(KERN_NOTICE "psmouse.c: issuing reconnect request\n"); | |
244 | serio_reconnect(psmouse->ps2dev.serio); | |
245 | return -1; | |
246 | } | |
247 | } | |
248 | psmouse->pktcnt = 0; | |
249 | break; | |
250 | ||
251 | case PSMOUSE_FULL_PACKET: | |
252 | psmouse->pktcnt = 0; | |
253 | if (psmouse->out_of_sync) { | |
254 | psmouse->out_of_sync = 0; | |
255 | printk(KERN_NOTICE "psmouse.c: %s at %s - driver resynched.\n", | |
256 | psmouse->name, psmouse->phys); | |
257 | } | |
258 | break; | |
259 | ||
260 | case PSMOUSE_GOOD_DATA: | |
261 | break; | |
262 | } | |
263 | return 0; | |
264 | } | |
265 | ||
266 | /* | |
267 | * psmouse_interrupt() handles incoming characters, either passing them | |
268 | * for normal processing or gathering them as command response. | |
1da177e4 LT |
269 | */ |
270 | ||
271 | static irqreturn_t psmouse_interrupt(struct serio *serio, | |
7d12e780 | 272 | unsigned char data, unsigned int flags) |
1da177e4 LT |
273 | { |
274 | struct psmouse *psmouse = serio_get_drvdata(serio); | |
1da177e4 LT |
275 | |
276 | if (psmouse->state == PSMOUSE_IGNORE) | |
277 | goto out; | |
278 | ||
279 | if (flags & (SERIO_PARITY|SERIO_TIMEOUT)) { | |
280 | if (psmouse->state == PSMOUSE_ACTIVATED) | |
281 | printk(KERN_WARNING "psmouse.c: bad data from KBC -%s%s\n", | |
282 | flags & SERIO_TIMEOUT ? " timeout" : "", | |
283 | flags & SERIO_PARITY ? " bad parity" : ""); | |
284 | ps2_cmd_aborted(&psmouse->ps2dev); | |
285 | goto out; | |
286 | } | |
287 | ||
288 | if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_ACK)) | |
289 | if (ps2_handle_ack(&psmouse->ps2dev, data)) | |
290 | goto out; | |
291 | ||
292 | if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_CMD)) | |
293 | if (ps2_handle_response(&psmouse->ps2dev, data)) | |
294 | goto out; | |
295 | ||
f0d5c6f4 | 296 | if (psmouse->state <= PSMOUSE_RESYNCING) |
1da177e4 LT |
297 | goto out; |
298 | ||
299 | if (psmouse->state == PSMOUSE_ACTIVATED && | |
300 | psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) { | |
f0d5c6f4 | 301 | printk(KERN_INFO "psmouse.c: %s at %s lost synchronization, throwing %d bytes away.\n", |
1da177e4 | 302 | psmouse->name, psmouse->phys, psmouse->pktcnt); |
f0d5c6f4 DT |
303 | psmouse->badbyte = psmouse->packet[0]; |
304 | __psmouse_set_state(psmouse, PSMOUSE_RESYNCING); | |
305 | queue_work(kpsmoused_wq, &psmouse->resync_work); | |
306 | goto out; | |
1da177e4 LT |
307 | } |
308 | ||
1da177e4 | 309 | psmouse->packet[psmouse->pktcnt++] = data; |
f0d5c6f4 DT |
310 | /* |
311 | * Check if this is a new device announcement (0xAA 0x00) | |
312 | */ | |
313 | if (unlikely(psmouse->packet[0] == PSMOUSE_RET_BAT && psmouse->pktcnt <= 2)) { | |
89c9b480 DT |
314 | if (psmouse->pktcnt == 1) { |
315 | psmouse->last = jiffies; | |
1da177e4 | 316 | goto out; |
89c9b480 | 317 | } |
1da177e4 | 318 | |
f0d5c6f4 DT |
319 | if (psmouse->packet[1] == PSMOUSE_RET_ID) { |
320 | __psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
321 | serio_reconnect(serio); | |
322 | goto out; | |
1da177e4 | 323 | } |
f0d5c6f4 DT |
324 | /* |
325 | * Not a new device, try processing first byte normally | |
326 | */ | |
327 | psmouse->pktcnt = 1; | |
7d12e780 | 328 | if (psmouse_handle_byte(psmouse)) |
f0d5c6f4 | 329 | goto out; |
1da177e4 | 330 | |
f0d5c6f4 DT |
331 | psmouse->packet[psmouse->pktcnt++] = data; |
332 | } | |
1da177e4 | 333 | |
f0d5c6f4 DT |
334 | /* |
335 | * See if we need to force resync because mouse was idle for too long | |
336 | */ | |
337 | if (psmouse->state == PSMOUSE_ACTIVATED && | |
338 | psmouse->pktcnt == 1 && psmouse->resync_time && | |
339 | time_after(jiffies, psmouse->last + psmouse->resync_time * HZ)) { | |
340 | psmouse->badbyte = psmouse->packet[0]; | |
341 | __psmouse_set_state(psmouse, PSMOUSE_RESYNCING); | |
342 | queue_work(kpsmoused_wq, &psmouse->resync_work); | |
343 | goto out; | |
344 | } | |
1da177e4 | 345 | |
f0d5c6f4 | 346 | psmouse->last = jiffies; |
7d12e780 | 347 | psmouse_handle_byte(psmouse); |
1da177e4 | 348 | |
f0d5c6f4 | 349 | out: |
1da177e4 LT |
350 | return IRQ_HANDLED; |
351 | } | |
352 | ||
353 | ||
354 | /* | |
355 | * psmouse_sliced_command() sends an extended PS/2 command to the mouse | |
356 | * using sliced syntax, understood by advanced devices, such as Logitech | |
357 | * or Synaptics touchpads. The command is encoded as: | |
358 | * 0xE6 0xE8 rr 0xE8 ss 0xE8 tt 0xE8 uu where (rr*64)+(ss*16)+(tt*4)+uu | |
359 | * is the command. | |
360 | */ | |
361 | int psmouse_sliced_command(struct psmouse *psmouse, unsigned char command) | |
362 | { | |
363 | int i; | |
364 | ||
365 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11)) | |
366 | return -1; | |
367 | ||
368 | for (i = 6; i >= 0; i -= 2) { | |
369 | unsigned char d = (command >> i) & 3; | |
370 | if (ps2_command(&psmouse->ps2dev, &d, PSMOUSE_CMD_SETRES)) | |
371 | return -1; | |
372 | } | |
373 | ||
374 | return 0; | |
375 | } | |
376 | ||
377 | ||
378 | /* | |
379 | * psmouse_reset() resets the mouse into power-on state. | |
380 | */ | |
381 | int psmouse_reset(struct psmouse *psmouse) | |
382 | { | |
383 | unsigned char param[2]; | |
384 | ||
385 | if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_RESET_BAT)) | |
386 | return -1; | |
387 | ||
388 | if (param[0] != PSMOUSE_RET_BAT && param[1] != PSMOUSE_RET_ID) | |
389 | return -1; | |
390 | ||
391 | return 0; | |
392 | } | |
393 | ||
394 | ||
395 | /* | |
396 | * Genius NetMouse magic init. | |
397 | */ | |
398 | static int genius_detect(struct psmouse *psmouse, int set_properties) | |
399 | { | |
400 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
401 | unsigned char param[4]; | |
402 | ||
403 | param[0] = 3; | |
404 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); | |
405 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
406 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
407 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
408 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); | |
409 | ||
410 | if (param[0] != 0x00 || param[1] != 0x33 || param[2] != 0x55) | |
411 | return -1; | |
412 | ||
413 | if (set_properties) { | |
2e5b636b DT |
414 | set_bit(BTN_EXTRA, psmouse->dev->keybit); |
415 | set_bit(BTN_SIDE, psmouse->dev->keybit); | |
416 | set_bit(REL_WHEEL, psmouse->dev->relbit); | |
1da177e4 LT |
417 | |
418 | psmouse->vendor = "Genius"; | |
a3f3f317 | 419 | psmouse->name = "Mouse"; |
1da177e4 LT |
420 | psmouse->pktsize = 4; |
421 | } | |
422 | ||
423 | return 0; | |
424 | } | |
425 | ||
426 | /* | |
427 | * IntelliMouse magic init. | |
428 | */ | |
429 | static int intellimouse_detect(struct psmouse *psmouse, int set_properties) | |
430 | { | |
431 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
432 | unsigned char param[2]; | |
433 | ||
434 | param[0] = 200; | |
435 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
436 | param[0] = 100; | |
437 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
438 | param[0] = 80; | |
439 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
440 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); | |
441 | ||
442 | if (param[0] != 3) | |
443 | return -1; | |
444 | ||
445 | if (set_properties) { | |
2e5b636b DT |
446 | set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
447 | set_bit(REL_WHEEL, psmouse->dev->relbit); | |
1da177e4 LT |
448 | |
449 | if (!psmouse->vendor) psmouse->vendor = "Generic"; | |
450 | if (!psmouse->name) psmouse->name = "Wheel Mouse"; | |
451 | psmouse->pktsize = 4; | |
452 | } | |
453 | ||
454 | return 0; | |
455 | } | |
456 | ||
457 | /* | |
458 | * Try IntelliMouse/Explorer magic init. | |
459 | */ | |
460 | static int im_explorer_detect(struct psmouse *psmouse, int set_properties) | |
461 | { | |
462 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
463 | unsigned char param[2]; | |
464 | ||
465 | intellimouse_detect(psmouse, 0); | |
466 | ||
467 | param[0] = 200; | |
468 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
469 | param[0] = 200; | |
470 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
471 | param[0] = 80; | |
472 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
473 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); | |
474 | ||
475 | if (param[0] != 4) | |
476 | return -1; | |
477 | ||
b0c9ad8e PB |
478 | /* Magic to enable horizontal scrolling on IntelliMouse 4.0 */ |
479 | param[0] = 200; | |
480 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
481 | param[0] = 80; | |
482 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
483 | param[0] = 40; | |
484 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
485 | ||
1da177e4 | 486 | if (set_properties) { |
2e5b636b DT |
487 | set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
488 | set_bit(REL_WHEEL, psmouse->dev->relbit); | |
b0c9ad8e | 489 | set_bit(REL_HWHEEL, psmouse->dev->relbit); |
2e5b636b DT |
490 | set_bit(BTN_SIDE, psmouse->dev->keybit); |
491 | set_bit(BTN_EXTRA, psmouse->dev->keybit); | |
1da177e4 LT |
492 | |
493 | if (!psmouse->vendor) psmouse->vendor = "Generic"; | |
494 | if (!psmouse->name) psmouse->name = "Explorer Mouse"; | |
495 | psmouse->pktsize = 4; | |
496 | } | |
497 | ||
498 | return 0; | |
499 | } | |
500 | ||
501 | /* | |
502 | * Kensington ThinkingMouse / ExpertMouse magic init. | |
503 | */ | |
504 | static int thinking_detect(struct psmouse *psmouse, int set_properties) | |
505 | { | |
506 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
507 | unsigned char param[2]; | |
e38de678 | 508 | static const unsigned char seq[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20 }; |
1da177e4 LT |
509 | int i; |
510 | ||
511 | param[0] = 10; | |
512 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
513 | param[0] = 0; | |
514 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); | |
e38de678 HD |
515 | for (i = 0; i < ARRAY_SIZE(seq); i++) { |
516 | param[0] = seq[i]; | |
517 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
518 | } | |
1da177e4 LT |
519 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); |
520 | ||
521 | if (param[0] != 2) | |
522 | return -1; | |
523 | ||
524 | if (set_properties) { | |
2e5b636b | 525 | set_bit(BTN_EXTRA, psmouse->dev->keybit); |
1da177e4 LT |
526 | |
527 | psmouse->vendor = "Kensington"; | |
528 | psmouse->name = "ThinkingMouse"; | |
529 | } | |
530 | ||
531 | return 0; | |
532 | } | |
533 | ||
534 | /* | |
535 | * Bare PS/2 protocol "detection". Always succeeds. | |
536 | */ | |
537 | static int ps2bare_detect(struct psmouse *psmouse, int set_properties) | |
538 | { | |
dbf4ccd6 DT |
539 | if (set_properties) { |
540 | if (!psmouse->vendor) psmouse->vendor = "Generic"; | |
541 | if (!psmouse->name) psmouse->name = "Mouse"; | |
542 | } | |
1da177e4 LT |
543 | |
544 | return 0; | |
545 | } | |
546 | ||
dbf4ccd6 | 547 | |
1da177e4 LT |
548 | /* |
549 | * psmouse_extensions() probes for any extensions to the basic PS/2 protocol | |
550 | * the mouse may have. | |
551 | */ | |
552 | ||
553 | static int psmouse_extensions(struct psmouse *psmouse, | |
554 | unsigned int max_proto, int set_properties) | |
555 | { | |
556 | int synaptics_hardware = 0; | |
557 | ||
a15d60f8 DT |
558 | /* |
559 | * We always check for lifebook because it does not disturb mouse | |
560 | * (it only checks DMI information). | |
561 | */ | |
dbf4ccd6 | 562 | if (lifebook_detect(psmouse, set_properties) == 0) { |
a15d60f8 DT |
563 | if (max_proto > PSMOUSE_IMEX) { |
564 | if (!set_properties || lifebook_init(psmouse) == 0) | |
565 | return PSMOUSE_LIFEBOOK; | |
566 | } | |
567 | } | |
02d7f589 | 568 | |
1da177e4 LT |
569 | /* |
570 | * Try Kensington ThinkingMouse (we try first, because synaptics probe | |
571 | * upsets the thinkingmouse). | |
572 | */ | |
573 | ||
574 | if (max_proto > PSMOUSE_IMEX && thinking_detect(psmouse, set_properties) == 0) | |
575 | return PSMOUSE_THINKPS; | |
576 | ||
577 | /* | |
578 | * Try Synaptics TouchPad | |
579 | */ | |
580 | if (max_proto > PSMOUSE_PS2 && synaptics_detect(psmouse, set_properties) == 0) { | |
581 | synaptics_hardware = 1; | |
582 | ||
583 | if (max_proto > PSMOUSE_IMEX) { | |
584 | if (!set_properties || synaptics_init(psmouse) == 0) | |
585 | return PSMOUSE_SYNAPTICS; | |
586 | /* | |
587 | * Some Synaptics touchpads can emulate extended protocols (like IMPS/2). | |
588 | * Unfortunately Logitech/Genius probes confuse some firmware versions so | |
589 | * we'll have to skip them. | |
590 | */ | |
591 | max_proto = PSMOUSE_IMEX; | |
592 | } | |
593 | /* | |
594 | * Make sure that touchpad is in relative mode, gestures (taps) are enabled | |
595 | */ | |
596 | synaptics_reset(psmouse); | |
597 | } | |
598 | ||
599 | /* | |
600 | * Try ALPS TouchPad | |
601 | */ | |
602 | if (max_proto > PSMOUSE_IMEX) { | |
603 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); | |
604 | if (alps_detect(psmouse, set_properties) == 0) { | |
605 | if (!set_properties || alps_init(psmouse) == 0) | |
606 | return PSMOUSE_ALPS; | |
607 | /* | |
608 | * Init failed, try basic relative protocols | |
609 | */ | |
610 | max_proto = PSMOUSE_IMEX; | |
611 | } | |
612 | } | |
613 | ||
614 | if (max_proto > PSMOUSE_IMEX && genius_detect(psmouse, set_properties) == 0) | |
615 | return PSMOUSE_GENPS; | |
616 | ||
617 | if (max_proto > PSMOUSE_IMEX && ps2pp_init(psmouse, set_properties) == 0) | |
618 | return PSMOUSE_PS2PP; | |
619 | ||
ba44995a DT |
620 | if (max_proto > PSMOUSE_IMEX && trackpoint_detect(psmouse, set_properties) == 0) |
621 | return PSMOUSE_TRACKPOINT; | |
622 | ||
1da177e4 LT |
623 | /* |
624 | * Reset to defaults in case the device got confused by extended | |
ba44995a DT |
625 | * protocol probes. Note that we do full reset becuase some mice |
626 | * put themselves to sleep when see PSMOUSE_RESET_DIS. | |
1da177e4 | 627 | */ |
ba44995a | 628 | psmouse_reset(psmouse); |
1da177e4 LT |
629 | |
630 | if (max_proto >= PSMOUSE_IMEX && im_explorer_detect(psmouse, set_properties) == 0) | |
631 | return PSMOUSE_IMEX; | |
632 | ||
633 | if (max_proto >= PSMOUSE_IMPS && intellimouse_detect(psmouse, set_properties) == 0) | |
634 | return PSMOUSE_IMPS; | |
635 | ||
636 | /* | |
637 | * Okay, all failed, we have a standard mouse here. The number of the buttons | |
638 | * is still a question, though. We assume 3. | |
639 | */ | |
640 | ps2bare_detect(psmouse, set_properties); | |
641 | ||
642 | if (synaptics_hardware) { | |
643 | /* | |
644 | * We detected Synaptics hardware but it did not respond to IMPS/2 probes. | |
645 | * We need to reset the touchpad because if there is a track point on the | |
646 | * pass through port it could get disabled while probing for protocol | |
647 | * extensions. | |
648 | */ | |
649 | psmouse_reset(psmouse); | |
1da177e4 LT |
650 | } |
651 | ||
652 | return PSMOUSE_PS2; | |
653 | } | |
654 | ||
e38de678 | 655 | static const struct psmouse_protocol psmouse_protocols[] = { |
dbf4ccd6 DT |
656 | { |
657 | .type = PSMOUSE_PS2, | |
658 | .name = "PS/2", | |
659 | .alias = "bare", | |
660 | .maxproto = 1, | |
661 | .detect = ps2bare_detect, | |
662 | }, | |
663 | { | |
664 | .type = PSMOUSE_PS2PP, | |
665 | .name = "PS2++", | |
666 | .alias = "logitech", | |
667 | .detect = ps2pp_init, | |
668 | }, | |
669 | { | |
670 | .type = PSMOUSE_THINKPS, | |
671 | .name = "ThinkPS/2", | |
672 | .alias = "thinkps", | |
673 | .detect = thinking_detect, | |
674 | }, | |
675 | { | |
676 | .type = PSMOUSE_GENPS, | |
677 | .name = "GenPS/2", | |
678 | .alias = "genius", | |
679 | .detect = genius_detect, | |
680 | }, | |
681 | { | |
682 | .type = PSMOUSE_IMPS, | |
683 | .name = "ImPS/2", | |
684 | .alias = "imps", | |
685 | .maxproto = 1, | |
686 | .detect = intellimouse_detect, | |
687 | }, | |
688 | { | |
689 | .type = PSMOUSE_IMEX, | |
690 | .name = "ImExPS/2", | |
691 | .alias = "exps", | |
692 | .maxproto = 1, | |
693 | .detect = im_explorer_detect, | |
694 | }, | |
695 | { | |
696 | .type = PSMOUSE_SYNAPTICS, | |
697 | .name = "SynPS/2", | |
698 | .alias = "synaptics", | |
699 | .detect = synaptics_detect, | |
700 | .init = synaptics_init, | |
701 | }, | |
702 | { | |
703 | .type = PSMOUSE_ALPS, | |
704 | .name = "AlpsPS/2", | |
705 | .alias = "alps", | |
706 | .detect = alps_detect, | |
707 | .init = alps_init, | |
708 | }, | |
709 | { | |
710 | .type = PSMOUSE_LIFEBOOK, | |
711 | .name = "LBPS/2", | |
712 | .alias = "lifebook", | |
713 | .init = lifebook_init, | |
714 | }, | |
541e316a SE |
715 | { |
716 | .type = PSMOUSE_TRACKPOINT, | |
717 | .name = "TPPS/2", | |
718 | .alias = "trackpoint", | |
719 | .detect = trackpoint_detect, | |
720 | }, | |
dbf4ccd6 DT |
721 | { |
722 | .type = PSMOUSE_AUTO, | |
723 | .name = "auto", | |
724 | .alias = "any", | |
725 | .maxproto = 1, | |
726 | }, | |
727 | }; | |
728 | ||
e38de678 | 729 | static const struct psmouse_protocol *psmouse_protocol_by_type(enum psmouse_type type) |
dbf4ccd6 DT |
730 | { |
731 | int i; | |
732 | ||
733 | for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++) | |
734 | if (psmouse_protocols[i].type == type) | |
735 | return &psmouse_protocols[i]; | |
736 | ||
737 | WARN_ON(1); | |
738 | return &psmouse_protocols[0]; | |
739 | } | |
740 | ||
e38de678 | 741 | static const struct psmouse_protocol *psmouse_protocol_by_name(const char *name, size_t len) |
dbf4ccd6 | 742 | { |
e38de678 | 743 | const struct psmouse_protocol *p; |
dbf4ccd6 DT |
744 | int i; |
745 | ||
746 | for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++) { | |
747 | p = &psmouse_protocols[i]; | |
748 | ||
749 | if ((strlen(p->name) == len && !strncmp(p->name, name, len)) || | |
750 | (strlen(p->alias) == len && !strncmp(p->alias, name, len))) | |
751 | return &psmouse_protocols[i]; | |
752 | } | |
753 | ||
754 | return NULL; | |
755 | } | |
756 | ||
757 | ||
1da177e4 LT |
758 | /* |
759 | * psmouse_probe() probes for a PS/2 mouse. | |
760 | */ | |
761 | ||
762 | static int psmouse_probe(struct psmouse *psmouse) | |
763 | { | |
764 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
765 | unsigned char param[2]; | |
766 | ||
767 | /* | |
768 | * First, we check if it's a mouse. It should send 0x00 or 0x03 | |
769 | * in case of an IntelliMouse in 4-byte mode or 0x04 for IM Explorer. | |
7741e931 VP |
770 | * Sunrex K8561 IR Keyboard/Mouse reports 0xff on second and subsequent |
771 | * ID queries, probably due to a firmware bug. | |
1da177e4 LT |
772 | */ |
773 | ||
774 | param[0] = 0xa5; | |
775 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) | |
776 | return -1; | |
777 | ||
7741e931 VP |
778 | if (param[0] != 0x00 && param[0] != 0x03 && |
779 | param[0] != 0x04 && param[0] != 0xff) | |
1da177e4 LT |
780 | return -1; |
781 | ||
782 | /* | |
783 | * Then we reset and disable the mouse so that it doesn't generate events. | |
784 | */ | |
785 | ||
786 | if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_DIS)) | |
787 | printk(KERN_WARNING "psmouse.c: Failed to reset mouse on %s\n", ps2dev->serio->phys); | |
788 | ||
789 | return 0; | |
790 | } | |
791 | ||
792 | /* | |
793 | * Here we set the mouse resolution. | |
794 | */ | |
795 | ||
796 | void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution) | |
797 | { | |
e38de678 HD |
798 | static const unsigned char params[] = { 0, 1, 2, 2, 3 }; |
799 | unsigned char p; | |
1da177e4 LT |
800 | |
801 | if (resolution == 0 || resolution > 200) | |
802 | resolution = 200; | |
803 | ||
e38de678 HD |
804 | p = params[resolution / 50]; |
805 | ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES); | |
806 | psmouse->resolution = 25 << p; | |
1da177e4 LT |
807 | } |
808 | ||
809 | /* | |
810 | * Here we set the mouse report rate. | |
811 | */ | |
812 | ||
813 | static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate) | |
814 | { | |
e38de678 HD |
815 | static const unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 }; |
816 | unsigned char r; | |
1da177e4 LT |
817 | int i = 0; |
818 | ||
819 | while (rates[i] > rate) i++; | |
e38de678 HD |
820 | r = rates[i]; |
821 | ps2_command(&psmouse->ps2dev, &r, PSMOUSE_CMD_SETRATE); | |
822 | psmouse->rate = r; | |
1da177e4 LT |
823 | } |
824 | ||
825 | /* | |
826 | * psmouse_initialize() initializes the mouse to a sane state. | |
827 | */ | |
828 | ||
829 | static void psmouse_initialize(struct psmouse *psmouse) | |
830 | { | |
831 | /* | |
832 | * We set the mouse into streaming mode. | |
833 | */ | |
834 | ||
835 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM); | |
836 | ||
837 | /* | |
838 | * We set the mouse report rate, resolution and scaling. | |
839 | */ | |
840 | ||
841 | if (psmouse_max_proto != PSMOUSE_PS2) { | |
842 | psmouse->set_rate(psmouse, psmouse->rate); | |
843 | psmouse->set_resolution(psmouse, psmouse->resolution); | |
844 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
845 | } | |
846 | } | |
847 | ||
1da177e4 LT |
848 | /* |
849 | * psmouse_activate() enables the mouse so that we get motion reports from it. | |
850 | */ | |
851 | ||
852 | static void psmouse_activate(struct psmouse *psmouse) | |
853 | { | |
854 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE)) | |
855 | printk(KERN_WARNING "psmouse.c: Failed to enable mouse on %s\n", | |
856 | psmouse->ps2dev.serio->phys); | |
857 | ||
858 | psmouse_set_state(psmouse, PSMOUSE_ACTIVATED); | |
859 | } | |
860 | ||
861 | ||
862 | /* | |
863 | * psmouse_deactivate() puts the mouse into poll mode so that we don't get motion | |
864 | * reports from it unless we explicitely request it. | |
865 | */ | |
866 | ||
867 | static void psmouse_deactivate(struct psmouse *psmouse) | |
868 | { | |
869 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE)) | |
870 | printk(KERN_WARNING "psmouse.c: Failed to deactivate mouse on %s\n", | |
871 | psmouse->ps2dev.serio->phys); | |
872 | ||
873 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
874 | } | |
875 | ||
f0d5c6f4 DT |
876 | /* |
877 | * psmouse_poll() - default poll hanlder. Everyone except for ALPS uses it. | |
878 | */ | |
879 | ||
880 | static int psmouse_poll(struct psmouse *psmouse) | |
881 | { | |
882 | return ps2_command(&psmouse->ps2dev, psmouse->packet, | |
883 | PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)); | |
884 | } | |
885 | ||
886 | ||
887 | /* | |
888 | * psmouse_resync() attempts to re-validate current protocol. | |
889 | */ | |
890 | ||
891 | static void psmouse_resync(void *p) | |
892 | { | |
893 | struct psmouse *psmouse = p, *parent = NULL; | |
894 | struct serio *serio = psmouse->ps2dev.serio; | |
895 | psmouse_ret_t rc = PSMOUSE_GOOD_DATA; | |
896 | int failed = 0, enabled = 0; | |
897 | int i; | |
898 | ||
c14471dc | 899 | mutex_lock(&psmouse_mutex); |
f0d5c6f4 DT |
900 | |
901 | if (psmouse->state != PSMOUSE_RESYNCING) | |
902 | goto out; | |
903 | ||
904 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
905 | parent = serio_get_drvdata(serio->parent); | |
906 | psmouse_deactivate(parent); | |
907 | } | |
908 | ||
909 | /* | |
910 | * Some mice don't ACK commands sent while they are in the middle of | |
911 | * transmitting motion packet. To avoid delay we use ps2_sendbyte() | |
912 | * instead of ps2_command() which would wait for 200ms for an ACK | |
913 | * that may never come. | |
914 | * As an additional quirk ALPS touchpads may not only forget to ACK | |
915 | * disable command but will stop reporting taps, so if we see that | |
916 | * mouse at least once ACKs disable we will do full reconnect if ACK | |
917 | * is missing. | |
918 | */ | |
919 | psmouse->num_resyncs++; | |
920 | ||
921 | if (ps2_sendbyte(&psmouse->ps2dev, PSMOUSE_CMD_DISABLE, 20)) { | |
922 | if (psmouse->num_resyncs < 3 || psmouse->acks_disable_command) | |
923 | failed = 1; | |
924 | } else | |
925 | psmouse->acks_disable_command = 1; | |
926 | ||
927 | /* | |
928 | * Poll the mouse. If it was reset the packet will be shorter than | |
929 | * psmouse->pktsize and ps2_command will fail. We do not expect and | |
930 | * do not handle scenario when mouse "upgrades" its protocol while | |
931 | * disconnected since it would require additional delay. If we ever | |
932 | * see a mouse that does it we'll adjust the code. | |
933 | */ | |
934 | if (!failed) { | |
935 | if (psmouse->poll(psmouse)) | |
936 | failed = 1; | |
937 | else { | |
938 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
939 | for (i = 0; i < psmouse->pktsize; i++) { | |
940 | psmouse->pktcnt++; | |
7d12e780 | 941 | rc = psmouse->protocol_handler(psmouse); |
f0d5c6f4 DT |
942 | if (rc != PSMOUSE_GOOD_DATA) |
943 | break; | |
944 | } | |
945 | if (rc != PSMOUSE_FULL_PACKET) | |
946 | failed = 1; | |
947 | psmouse_set_state(psmouse, PSMOUSE_RESYNCING); | |
948 | } | |
949 | } | |
950 | /* | |
951 | * Now try to enable mouse. We try to do that even if poll failed and also | |
952 | * repeat our attempts 5 times, otherwise we may be left out with disabled | |
953 | * mouse. | |
954 | */ | |
955 | for (i = 0; i < 5; i++) { | |
956 | if (!ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { | |
957 | enabled = 1; | |
958 | break; | |
959 | } | |
960 | msleep(200); | |
961 | } | |
962 | ||
963 | if (!enabled) { | |
964 | printk(KERN_WARNING "psmouse.c: failed to re-enable mouse on %s\n", | |
965 | psmouse->ps2dev.serio->phys); | |
966 | failed = 1; | |
967 | } | |
968 | ||
969 | if (failed) { | |
970 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
971 | printk(KERN_INFO "psmouse.c: resync failed, issuing reconnect request\n"); | |
972 | serio_reconnect(serio); | |
973 | } else | |
974 | psmouse_set_state(psmouse, PSMOUSE_ACTIVATED); | |
975 | ||
976 | if (parent) | |
977 | psmouse_activate(parent); | |
978 | out: | |
c14471dc | 979 | mutex_unlock(&psmouse_mutex); |
f0d5c6f4 | 980 | } |
1da177e4 LT |
981 | |
982 | /* | |
983 | * psmouse_cleanup() resets the mouse into power-on state. | |
984 | */ | |
985 | ||
986 | static void psmouse_cleanup(struct serio *serio) | |
987 | { | |
988 | struct psmouse *psmouse = serio_get_drvdata(serio); | |
989 | ||
990 | psmouse_reset(psmouse); | |
991 | } | |
992 | ||
993 | /* | |
994 | * psmouse_disconnect() closes and frees. | |
995 | */ | |
996 | ||
997 | static void psmouse_disconnect(struct serio *serio) | |
998 | { | |
04df1925 DT |
999 | struct psmouse *psmouse, *parent = NULL; |
1000 | ||
1001 | psmouse = serio_get_drvdata(serio); | |
1da177e4 | 1002 | |
cfe9e888 | 1003 | sysfs_remove_group(&serio->dev.kobj, &psmouse_attribute_group); |
1da177e4 | 1004 | |
c14471dc | 1005 | mutex_lock(&psmouse_mutex); |
04df1925 | 1006 | |
1da177e4 LT |
1007 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); |
1008 | ||
f0d5c6f4 | 1009 | /* make sure we don't have a resync in progress */ |
c14471dc | 1010 | mutex_unlock(&psmouse_mutex); |
f0d5c6f4 | 1011 | flush_workqueue(kpsmoused_wq); |
c14471dc | 1012 | mutex_lock(&psmouse_mutex); |
f0d5c6f4 | 1013 | |
1da177e4 LT |
1014 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { |
1015 | parent = serio_get_drvdata(serio->parent); | |
04df1925 | 1016 | psmouse_deactivate(parent); |
1da177e4 LT |
1017 | } |
1018 | ||
1019 | if (psmouse->disconnect) | |
1020 | psmouse->disconnect(psmouse); | |
1021 | ||
04df1925 DT |
1022 | if (parent && parent->pt_deactivate) |
1023 | parent->pt_deactivate(parent); | |
1024 | ||
1da177e4 LT |
1025 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); |
1026 | ||
1da177e4 LT |
1027 | serio_close(serio); |
1028 | serio_set_drvdata(serio, NULL); | |
2e5b636b | 1029 | input_unregister_device(psmouse->dev); |
1da177e4 | 1030 | kfree(psmouse); |
04df1925 DT |
1031 | |
1032 | if (parent) | |
1033 | psmouse_activate(parent); | |
1034 | ||
c14471dc | 1035 | mutex_unlock(&psmouse_mutex); |
1da177e4 LT |
1036 | } |
1037 | ||
e38de678 | 1038 | static int psmouse_switch_protocol(struct psmouse *psmouse, const struct psmouse_protocol *proto) |
dbf4ccd6 | 1039 | { |
2e5b636b | 1040 | struct input_dev *input_dev = psmouse->dev; |
dbf4ccd6 | 1041 | |
2e5b636b DT |
1042 | input_dev->private = psmouse; |
1043 | input_dev->cdev.dev = &psmouse->ps2dev.serio->dev; | |
dbf4ccd6 | 1044 | |
2e5b636b DT |
1045 | input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL); |
1046 | input_dev->keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT); | |
1047 | input_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y); | |
dbf4ccd6 DT |
1048 | |
1049 | psmouse->set_rate = psmouse_set_rate; | |
1050 | psmouse->set_resolution = psmouse_set_resolution; | |
f0d5c6f4 | 1051 | psmouse->poll = psmouse_poll; |
dbf4ccd6 DT |
1052 | psmouse->protocol_handler = psmouse_process_byte; |
1053 | psmouse->pktsize = 3; | |
1054 | ||
1055 | if (proto && (proto->detect || proto->init)) { | |
1056 | if (proto->detect && proto->detect(psmouse, 1) < 0) | |
1057 | return -1; | |
1058 | ||
1059 | if (proto->init && proto->init(psmouse) < 0) | |
1060 | return -1; | |
1061 | ||
1062 | psmouse->type = proto->type; | |
1063 | } | |
1064 | else | |
1065 | psmouse->type = psmouse_extensions(psmouse, psmouse_max_proto, 1); | |
1066 | ||
f0d5c6f4 DT |
1067 | /* |
1068 | * If mouse's packet size is 3 there is no point in polling the | |
1069 | * device in hopes to detect protocol reset - we won't get less | |
1070 | * than 3 bytes response anyhow. | |
1071 | */ | |
1072 | if (psmouse->pktsize == 3) | |
1073 | psmouse->resync_time = 0; | |
1074 | ||
1075 | /* | |
1076 | * Some smart KVMs fake response to POLL command returning just | |
1077 | * 3 bytes and messing up our resync logic, so if initial poll | |
1078 | * fails we won't try polling the device anymore. Hopefully | |
1079 | * such KVM will maintain initially selected protocol. | |
1080 | */ | |
1081 | if (psmouse->resync_time && psmouse->poll(psmouse)) | |
1082 | psmouse->resync_time = 0; | |
1083 | ||
08ffce45 DT |
1084 | snprintf(psmouse->devname, sizeof(psmouse->devname), "%s %s %s", |
1085 | psmouse_protocol_by_type(psmouse->type)->name, psmouse->vendor, psmouse->name); | |
dbf4ccd6 | 1086 | |
2e5b636b DT |
1087 | input_dev->name = psmouse->devname; |
1088 | input_dev->phys = psmouse->phys; | |
1089 | input_dev->id.bustype = BUS_I8042; | |
1090 | input_dev->id.vendor = 0x0002; | |
1091 | input_dev->id.product = psmouse->type; | |
1092 | input_dev->id.version = psmouse->model; | |
dbf4ccd6 DT |
1093 | |
1094 | return 0; | |
1095 | } | |
1096 | ||
1da177e4 LT |
1097 | /* |
1098 | * psmouse_connect() is a callback from the serio module when | |
1099 | * an unhandled serio port is found. | |
1100 | */ | |
1101 | static int psmouse_connect(struct serio *serio, struct serio_driver *drv) | |
1102 | { | |
1103 | struct psmouse *psmouse, *parent = NULL; | |
2e5b636b DT |
1104 | struct input_dev *input_dev; |
1105 | int retval = -ENOMEM; | |
1da177e4 | 1106 | |
c14471dc | 1107 | mutex_lock(&psmouse_mutex); |
04df1925 | 1108 | |
1da177e4 LT |
1109 | /* |
1110 | * If this is a pass-through port deactivate parent so the device | |
1111 | * connected to this port can be successfully identified | |
1112 | */ | |
1113 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1114 | parent = serio_get_drvdata(serio->parent); | |
1115 | psmouse_deactivate(parent); | |
1116 | } | |
1117 | ||
2e5b636b DT |
1118 | psmouse = kzalloc(sizeof(struct psmouse), GFP_KERNEL); |
1119 | input_dev = input_allocate_device(); | |
1120 | if (!psmouse || !input_dev) | |
1da177e4 | 1121 | goto out; |
1da177e4 | 1122 | |
1da177e4 | 1123 | ps2_init(&psmouse->ps2dev, serio); |
f0d5c6f4 | 1124 | INIT_WORK(&psmouse->resync_work, psmouse_resync, psmouse); |
2e5b636b | 1125 | psmouse->dev = input_dev; |
08ffce45 | 1126 | snprintf(psmouse->phys, sizeof(psmouse->phys), "%s/input0", serio->phys); |
dbf4ccd6 | 1127 | |
1da177e4 LT |
1128 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); |
1129 | ||
1130 | serio_set_drvdata(serio, psmouse); | |
1131 | ||
1132 | retval = serio_open(serio, drv); | |
2e5b636b | 1133 | if (retval) |
1da177e4 | 1134 | goto out; |
1da177e4 LT |
1135 | |
1136 | if (psmouse_probe(psmouse) < 0) { | |
1137 | serio_close(serio); | |
1da177e4 LT |
1138 | retval = -ENODEV; |
1139 | goto out; | |
1140 | } | |
1141 | ||
1142 | psmouse->rate = psmouse_rate; | |
1143 | psmouse->resolution = psmouse_resolution; | |
1144 | psmouse->resetafter = psmouse_resetafter; | |
f0d5c6f4 | 1145 | psmouse->resync_time = parent ? 0 : psmouse_resync_time; |
1da177e4 | 1146 | psmouse->smartscroll = psmouse_smartscroll; |
1da177e4 | 1147 | |
dbf4ccd6 | 1148 | psmouse_switch_protocol(psmouse, NULL); |
1da177e4 | 1149 | |
1da177e4 | 1150 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); |
1da177e4 LT |
1151 | psmouse_initialize(psmouse); |
1152 | ||
2e5b636b DT |
1153 | input_register_device(psmouse->dev); |
1154 | ||
1da177e4 LT |
1155 | if (parent && parent->pt_activate) |
1156 | parent->pt_activate(parent); | |
1157 | ||
cfe9e888 | 1158 | sysfs_create_group(&serio->dev.kobj, &psmouse_attribute_group); |
1da177e4 LT |
1159 | |
1160 | psmouse_activate(psmouse); | |
1161 | ||
1162 | retval = 0; | |
1163 | ||
1164 | out: | |
2e5b636b DT |
1165 | if (retval) { |
1166 | serio_set_drvdata(serio, NULL); | |
1167 | input_free_device(input_dev); | |
1168 | kfree(psmouse); | |
1169 | } | |
1170 | ||
04df1925 | 1171 | /* If this is a pass-through port the parent needs to be re-activated */ |
1da177e4 LT |
1172 | if (parent) |
1173 | psmouse_activate(parent); | |
1174 | ||
c14471dc | 1175 | mutex_unlock(&psmouse_mutex); |
1da177e4 LT |
1176 | return retval; |
1177 | } | |
1178 | ||
1179 | ||
1180 | static int psmouse_reconnect(struct serio *serio) | |
1181 | { | |
1182 | struct psmouse *psmouse = serio_get_drvdata(serio); | |
1183 | struct psmouse *parent = NULL; | |
1184 | struct serio_driver *drv = serio->drv; | |
1185 | int rc = -1; | |
1186 | ||
1187 | if (!drv || !psmouse) { | |
1188 | printk(KERN_DEBUG "psmouse: reconnect request, but serio is disconnected, ignoring...\n"); | |
1189 | return -1; | |
1190 | } | |
1191 | ||
c14471dc | 1192 | mutex_lock(&psmouse_mutex); |
04df1925 | 1193 | |
1da177e4 LT |
1194 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { |
1195 | parent = serio_get_drvdata(serio->parent); | |
1196 | psmouse_deactivate(parent); | |
1197 | } | |
1198 | ||
1199 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); | |
1200 | ||
1201 | if (psmouse->reconnect) { | |
1202 | if (psmouse->reconnect(psmouse)) | |
1203 | goto out; | |
1204 | } else if (psmouse_probe(psmouse) < 0 || | |
1205 | psmouse->type != psmouse_extensions(psmouse, psmouse_max_proto, 0)) | |
1206 | goto out; | |
1207 | ||
1208 | /* ok, the device type (and capabilities) match the old one, | |
1209 | * we can continue using it, complete intialization | |
1210 | */ | |
1211 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
1212 | ||
1213 | psmouse_initialize(psmouse); | |
1214 | ||
1215 | if (parent && parent->pt_activate) | |
1216 | parent->pt_activate(parent); | |
1217 | ||
1218 | psmouse_activate(psmouse); | |
1219 | rc = 0; | |
1220 | ||
1221 | out: | |
1222 | /* If this is a pass-through port the parent waits to be activated */ | |
1223 | if (parent) | |
1224 | psmouse_activate(parent); | |
1225 | ||
c14471dc | 1226 | mutex_unlock(&psmouse_mutex); |
1da177e4 LT |
1227 | return rc; |
1228 | } | |
1229 | ||
1230 | static struct serio_device_id psmouse_serio_ids[] = { | |
1231 | { | |
1232 | .type = SERIO_8042, | |
1233 | .proto = SERIO_ANY, | |
1234 | .id = SERIO_ANY, | |
1235 | .extra = SERIO_ANY, | |
1236 | }, | |
1237 | { | |
1238 | .type = SERIO_PS_PSTHRU, | |
1239 | .proto = SERIO_ANY, | |
1240 | .id = SERIO_ANY, | |
1241 | .extra = SERIO_ANY, | |
1242 | }, | |
1243 | { 0 } | |
1244 | }; | |
1245 | ||
1246 | MODULE_DEVICE_TABLE(serio, psmouse_serio_ids); | |
1247 | ||
1248 | static struct serio_driver psmouse_drv = { | |
1249 | .driver = { | |
1250 | .name = "psmouse", | |
1251 | }, | |
1252 | .description = DRIVER_DESC, | |
1253 | .id_table = psmouse_serio_ids, | |
1254 | .interrupt = psmouse_interrupt, | |
1255 | .connect = psmouse_connect, | |
1256 | .reconnect = psmouse_reconnect, | |
1257 | .disconnect = psmouse_disconnect, | |
1258 | .cleanup = psmouse_cleanup, | |
1259 | }; | |
1260 | ||
cfe9e888 DT |
1261 | ssize_t psmouse_attr_show_helper(struct device *dev, struct device_attribute *devattr, |
1262 | char *buf) | |
1da177e4 LT |
1263 | { |
1264 | struct serio *serio = to_serio_port(dev); | |
cfe9e888 DT |
1265 | struct psmouse_attribute *attr = to_psmouse_attr(devattr); |
1266 | struct psmouse *psmouse; | |
1da177e4 LT |
1267 | int retval; |
1268 | ||
1269 | retval = serio_pin_driver(serio); | |
1270 | if (retval) | |
1271 | return retval; | |
1272 | ||
1273 | if (serio->drv != &psmouse_drv) { | |
1274 | retval = -ENODEV; | |
1275 | goto out; | |
1276 | } | |
1277 | ||
cfe9e888 DT |
1278 | psmouse = serio_get_drvdata(serio); |
1279 | ||
1280 | retval = attr->show(psmouse, attr->data, buf); | |
1da177e4 LT |
1281 | |
1282 | out: | |
1283 | serio_unpin_driver(serio); | |
1284 | return retval; | |
1285 | } | |
1286 | ||
cfe9e888 DT |
1287 | ssize_t psmouse_attr_set_helper(struct device *dev, struct device_attribute *devattr, |
1288 | const char *buf, size_t count) | |
1da177e4 LT |
1289 | { |
1290 | struct serio *serio = to_serio_port(dev); | |
cfe9e888 DT |
1291 | struct psmouse_attribute *attr = to_psmouse_attr(devattr); |
1292 | struct psmouse *psmouse, *parent = NULL; | |
1da177e4 LT |
1293 | int retval; |
1294 | ||
1295 | retval = serio_pin_driver(serio); | |
1296 | if (retval) | |
1297 | return retval; | |
1298 | ||
1299 | if (serio->drv != &psmouse_drv) { | |
1300 | retval = -ENODEV; | |
04df1925 DT |
1301 | goto out_unpin; |
1302 | } | |
1303 | ||
c14471dc | 1304 | retval = mutex_lock_interruptible(&psmouse_mutex); |
04df1925 DT |
1305 | if (retval) |
1306 | goto out_unpin; | |
1307 | ||
cfe9e888 DT |
1308 | psmouse = serio_get_drvdata(serio); |
1309 | ||
04df1925 DT |
1310 | if (psmouse->state == PSMOUSE_IGNORE) { |
1311 | retval = -ENODEV; | |
c14471dc | 1312 | goto out_unlock; |
1da177e4 LT |
1313 | } |
1314 | ||
1315 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1316 | parent = serio_get_drvdata(serio->parent); | |
1317 | psmouse_deactivate(parent); | |
1318 | } | |
dbf4ccd6 | 1319 | |
1da177e4 LT |
1320 | psmouse_deactivate(psmouse); |
1321 | ||
cfe9e888 | 1322 | retval = attr->set(psmouse, attr->data, buf, count); |
1da177e4 | 1323 | |
dbf4ccd6 DT |
1324 | if (retval != -ENODEV) |
1325 | psmouse_activate(psmouse); | |
1326 | ||
1da177e4 LT |
1327 | if (parent) |
1328 | psmouse_activate(parent); | |
1329 | ||
c14471dc IM |
1330 | out_unlock: |
1331 | mutex_unlock(&psmouse_mutex); | |
04df1925 | 1332 | out_unpin: |
1da177e4 LT |
1333 | serio_unpin_driver(serio); |
1334 | return retval; | |
1335 | } | |
1336 | ||
cfe9e888 DT |
1337 | static ssize_t psmouse_show_int_attr(struct psmouse *psmouse, void *offset, char *buf) |
1338 | { | |
1339 | unsigned long *field = (unsigned long *)((char *)psmouse + (size_t)offset); | |
1340 | ||
1341 | return sprintf(buf, "%lu\n", *field); | |
1342 | } | |
1343 | ||
1344 | static ssize_t psmouse_set_int_attr(struct psmouse *psmouse, void *offset, const char *buf, size_t count) | |
1345 | { | |
1346 | unsigned long *field = (unsigned long *)((char *)psmouse + (size_t)offset); | |
1347 | unsigned long value; | |
1348 | char *rest; | |
1349 | ||
1350 | value = simple_strtoul(buf, &rest, 10); | |
1351 | if (*rest) | |
1352 | return -EINVAL; | |
1353 | ||
1354 | *field = value; | |
1355 | ||
1356 | return count; | |
1357 | } | |
1358 | ||
1359 | static ssize_t psmouse_attr_show_protocol(struct psmouse *psmouse, void *data, char *buf) | |
dbf4ccd6 DT |
1360 | { |
1361 | return sprintf(buf, "%s\n", psmouse_protocol_by_type(psmouse->type)->name); | |
1362 | } | |
1363 | ||
cfe9e888 | 1364 | static ssize_t psmouse_attr_set_protocol(struct psmouse *psmouse, void *data, const char *buf, size_t count) |
dbf4ccd6 DT |
1365 | { |
1366 | struct serio *serio = psmouse->ps2dev.serio; | |
1367 | struct psmouse *parent = NULL; | |
2e5b636b | 1368 | struct input_dev *new_dev; |
e38de678 | 1369 | const struct psmouse_protocol *proto; |
dbf4ccd6 DT |
1370 | int retry = 0; |
1371 | ||
1372 | if (!(proto = psmouse_protocol_by_name(buf, count))) | |
1373 | return -EINVAL; | |
1374 | ||
1375 | if (psmouse->type == proto->type) | |
1376 | return count; | |
1377 | ||
2e5b636b DT |
1378 | if (!(new_dev = input_allocate_device())) |
1379 | return -ENOMEM; | |
1380 | ||
dbf4ccd6 DT |
1381 | while (serio->child) { |
1382 | if (++retry > 3) { | |
1383 | printk(KERN_WARNING "psmouse: failed to destroy child port, protocol change aborted.\n"); | |
2e5b636b | 1384 | input_free_device(new_dev); |
dbf4ccd6 DT |
1385 | return -EIO; |
1386 | } | |
1387 | ||
c14471dc | 1388 | mutex_unlock(&psmouse_mutex); |
dbf4ccd6 DT |
1389 | serio_unpin_driver(serio); |
1390 | serio_unregister_child_port(serio); | |
1391 | serio_pin_driver_uninterruptible(serio); | |
c14471dc | 1392 | mutex_lock(&psmouse_mutex); |
dbf4ccd6 | 1393 | |
2e5b636b DT |
1394 | if (serio->drv != &psmouse_drv) { |
1395 | input_free_device(new_dev); | |
dbf4ccd6 | 1396 | return -ENODEV; |
2e5b636b | 1397 | } |
dbf4ccd6 | 1398 | |
2e5b636b DT |
1399 | if (psmouse->type == proto->type) { |
1400 | input_free_device(new_dev); | |
dbf4ccd6 | 1401 | return count; /* switched by other thread */ |
2e5b636b | 1402 | } |
dbf4ccd6 DT |
1403 | } |
1404 | ||
1405 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1406 | parent = serio_get_drvdata(serio->parent); | |
1407 | if (parent->pt_deactivate) | |
1408 | parent->pt_deactivate(parent); | |
1409 | } | |
1410 | ||
1411 | if (psmouse->disconnect) | |
1412 | psmouse->disconnect(psmouse); | |
1413 | ||
1414 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
2e5b636b | 1415 | input_unregister_device(psmouse->dev); |
dbf4ccd6 | 1416 | |
2e5b636b | 1417 | psmouse->dev = new_dev; |
dbf4ccd6 DT |
1418 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); |
1419 | ||
1420 | if (psmouse_switch_protocol(psmouse, proto) < 0) { | |
1421 | psmouse_reset(psmouse); | |
1422 | /* default to PSMOUSE_PS2 */ | |
1423 | psmouse_switch_protocol(psmouse, &psmouse_protocols[0]); | |
1424 | } | |
1425 | ||
1426 | psmouse_initialize(psmouse); | |
1427 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
1428 | ||
2e5b636b | 1429 | input_register_device(psmouse->dev); |
dbf4ccd6 DT |
1430 | |
1431 | if (parent && parent->pt_activate) | |
1432 | parent->pt_activate(parent); | |
1433 | ||
1434 | return count; | |
1435 | } | |
1436 | ||
cfe9e888 | 1437 | static ssize_t psmouse_attr_set_rate(struct psmouse *psmouse, void *data, const char *buf, size_t count) |
1da177e4 LT |
1438 | { |
1439 | unsigned long value; | |
1440 | char *rest; | |
1441 | ||
1442 | value = simple_strtoul(buf, &rest, 10); | |
1443 | if (*rest) | |
1444 | return -EINVAL; | |
1445 | ||
1446 | psmouse->set_rate(psmouse, value); | |
1447 | return count; | |
1448 | } | |
1449 | ||
cfe9e888 | 1450 | static ssize_t psmouse_attr_set_resolution(struct psmouse *psmouse, void *data, const char *buf, size_t count) |
1da177e4 LT |
1451 | { |
1452 | unsigned long value; | |
1453 | char *rest; | |
1454 | ||
1455 | value = simple_strtoul(buf, &rest, 10); | |
1456 | if (*rest) | |
1457 | return -EINVAL; | |
1458 | ||
1459 | psmouse->set_resolution(psmouse, value); | |
1460 | return count; | |
1461 | } | |
1462 | ||
1da177e4 LT |
1463 | |
1464 | static int psmouse_set_maxproto(const char *val, struct kernel_param *kp) | |
1465 | { | |
e38de678 | 1466 | const struct psmouse_protocol *proto; |
1da177e4 LT |
1467 | |
1468 | if (!val) | |
1469 | return -EINVAL; | |
1470 | ||
dbf4ccd6 | 1471 | proto = psmouse_protocol_by_name(val, strlen(val)); |
1da177e4 | 1472 | |
dbf4ccd6 DT |
1473 | if (!proto || !proto->maxproto) |
1474 | return -EINVAL; | |
1da177e4 | 1475 | |
dbf4ccd6 | 1476 | *((unsigned int *)kp->arg) = proto->type; |
1da177e4 | 1477 | |
541e316a | 1478 | return 0; |
1da177e4 LT |
1479 | } |
1480 | ||
1481 | static int psmouse_get_maxproto(char *buffer, struct kernel_param *kp) | |
1482 | { | |
dbf4ccd6 DT |
1483 | int type = *((unsigned int *)kp->arg); |
1484 | ||
1485 | return sprintf(buffer, "%s\n", psmouse_protocol_by_type(type)->name); | |
1da177e4 LT |
1486 | } |
1487 | ||
1488 | static int __init psmouse_init(void) | |
1489 | { | |
f0d5c6f4 DT |
1490 | kpsmoused_wq = create_singlethread_workqueue("kpsmoused"); |
1491 | if (!kpsmoused_wq) { | |
1492 | printk(KERN_ERR "psmouse: failed to create kpsmoused workqueue\n"); | |
1493 | return -ENOMEM; | |
1494 | } | |
1495 | ||
1da177e4 | 1496 | serio_register_driver(&psmouse_drv); |
f0d5c6f4 | 1497 | |
1da177e4 LT |
1498 | return 0; |
1499 | } | |
1500 | ||
1501 | static void __exit psmouse_exit(void) | |
1502 | { | |
1503 | serio_unregister_driver(&psmouse_drv); | |
f0d5c6f4 | 1504 | destroy_workqueue(kpsmoused_wq); |
1da177e4 LT |
1505 | } |
1506 | ||
1507 | module_init(psmouse_init); | |
1508 | module_exit(psmouse_exit); |