Commit | Line | Data |
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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 | ||
127 | static psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse, struct pt_regs *regs) | |
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 | ||
139 | input_regs(dev, regs); | |
140 | ||
141 | /* | |
142 | * Scroll wheel on IntelliMice, scroll buttons on NetMice | |
143 | */ | |
144 | ||
145 | if (psmouse->type == PSMOUSE_IMPS || psmouse->type == PSMOUSE_GENPS) | |
146 | input_report_rel(dev, REL_WHEEL, -(signed char) packet[3]); | |
147 | ||
148 | /* | |
149 | * Scroll wheel and buttons on IntelliMouse Explorer | |
150 | */ | |
151 | ||
152 | if (psmouse->type == PSMOUSE_IMEX) { | |
b0c9ad8e PB |
153 | switch (packet[3] & 0xC0) { |
154 | case 0x80: /* vertical scroll on IntelliMouse Explorer 4.0 */ | |
155 | input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31)); | |
156 | break; | |
157 | case 0x40: /* horizontal scroll on IntelliMouse Explorer 4.0 */ | |
158 | input_report_rel(dev, REL_HWHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31)); | |
159 | break; | |
160 | case 0x00: | |
161 | case 0xC0: | |
162 | input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 8) - (int) (packet[3] & 7)); | |
163 | input_report_key(dev, BTN_SIDE, (packet[3] >> 4) & 1); | |
164 | input_report_key(dev, BTN_EXTRA, (packet[3] >> 5) & 1); | |
165 | break; | |
166 | } | |
1da177e4 LT |
167 | } |
168 | ||
169 | /* | |
170 | * Extra buttons on Genius NewNet 3D | |
171 | */ | |
172 | ||
173 | if (psmouse->type == PSMOUSE_GENPS) { | |
174 | input_report_key(dev, BTN_SIDE, (packet[0] >> 6) & 1); | |
175 | input_report_key(dev, BTN_EXTRA, (packet[0] >> 7) & 1); | |
176 | } | |
177 | ||
178 | /* | |
179 | * Extra button on ThinkingMouse | |
180 | */ | |
181 | if (psmouse->type == PSMOUSE_THINKPS) { | |
182 | input_report_key(dev, BTN_EXTRA, (packet[0] >> 3) & 1); | |
183 | /* Without this bit of weirdness moving up gives wildly high Y changes. */ | |
184 | packet[1] |= (packet[0] & 0x40) << 1; | |
185 | } | |
186 | ||
187 | /* | |
188 | * Generic PS/2 Mouse | |
189 | */ | |
190 | ||
191 | input_report_key(dev, BTN_LEFT, packet[0] & 1); | |
192 | input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1); | |
193 | input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1); | |
194 | ||
195 | input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0); | |
196 | input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0); | |
197 | ||
198 | input_sync(dev); | |
199 | ||
200 | return PSMOUSE_FULL_PACKET; | |
201 | } | |
202 | ||
203 | /* | |
f0d5c6f4 DT |
204 | * __psmouse_set_state() sets new psmouse state and resets all flags. |
205 | */ | |
206 | ||
207 | static inline void __psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state) | |
208 | { | |
209 | psmouse->state = new_state; | |
210 | psmouse->pktcnt = psmouse->out_of_sync = 0; | |
211 | psmouse->ps2dev.flags = 0; | |
212 | psmouse->last = jiffies; | |
213 | } | |
214 | ||
215 | ||
216 | /* | |
217 | * psmouse_set_state() sets new psmouse state and resets all flags and | |
218 | * counters while holding serio lock so fighting with interrupt handler | |
219 | * is not a concern. | |
220 | */ | |
221 | ||
222 | static void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state) | |
223 | { | |
224 | serio_pause_rx(psmouse->ps2dev.serio); | |
225 | __psmouse_set_state(psmouse, new_state); | |
226 | serio_continue_rx(psmouse->ps2dev.serio); | |
227 | } | |
228 | ||
229 | /* | |
230 | * psmouse_handle_byte() processes one byte of the input data stream | |
231 | * by calling corresponding protocol handler. | |
232 | */ | |
233 | ||
234 | static int psmouse_handle_byte(struct psmouse *psmouse, struct pt_regs *regs) | |
235 | { | |
236 | psmouse_ret_t rc = psmouse->protocol_handler(psmouse, regs); | |
237 | ||
238 | switch (rc) { | |
239 | case PSMOUSE_BAD_DATA: | |
240 | if (psmouse->state == PSMOUSE_ACTIVATED) { | |
241 | printk(KERN_WARNING "psmouse.c: %s at %s lost sync at byte %d\n", | |
242 | psmouse->name, psmouse->phys, psmouse->pktcnt); | |
243 | if (++psmouse->out_of_sync == psmouse->resetafter) { | |
244 | __psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
245 | printk(KERN_NOTICE "psmouse.c: issuing reconnect request\n"); | |
246 | serio_reconnect(psmouse->ps2dev.serio); | |
247 | return -1; | |
248 | } | |
249 | } | |
250 | psmouse->pktcnt = 0; | |
251 | break; | |
252 | ||
253 | case PSMOUSE_FULL_PACKET: | |
254 | psmouse->pktcnt = 0; | |
255 | if (psmouse->out_of_sync) { | |
256 | psmouse->out_of_sync = 0; | |
257 | printk(KERN_NOTICE "psmouse.c: %s at %s - driver resynched.\n", | |
258 | psmouse->name, psmouse->phys); | |
259 | } | |
260 | break; | |
261 | ||
262 | case PSMOUSE_GOOD_DATA: | |
263 | break; | |
264 | } | |
265 | return 0; | |
266 | } | |
267 | ||
268 | /* | |
269 | * psmouse_interrupt() handles incoming characters, either passing them | |
270 | * for normal processing or gathering them as command response. | |
1da177e4 LT |
271 | */ |
272 | ||
273 | static irqreturn_t psmouse_interrupt(struct serio *serio, | |
274 | unsigned char data, unsigned int flags, struct pt_regs *regs) | |
275 | { | |
276 | struct psmouse *psmouse = serio_get_drvdata(serio); | |
1da177e4 LT |
277 | |
278 | if (psmouse->state == PSMOUSE_IGNORE) | |
279 | goto out; | |
280 | ||
281 | if (flags & (SERIO_PARITY|SERIO_TIMEOUT)) { | |
282 | if (psmouse->state == PSMOUSE_ACTIVATED) | |
283 | printk(KERN_WARNING "psmouse.c: bad data from KBC -%s%s\n", | |
284 | flags & SERIO_TIMEOUT ? " timeout" : "", | |
285 | flags & SERIO_PARITY ? " bad parity" : ""); | |
286 | ps2_cmd_aborted(&psmouse->ps2dev); | |
287 | goto out; | |
288 | } | |
289 | ||
290 | if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_ACK)) | |
291 | if (ps2_handle_ack(&psmouse->ps2dev, data)) | |
292 | goto out; | |
293 | ||
294 | if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_CMD)) | |
295 | if (ps2_handle_response(&psmouse->ps2dev, data)) | |
296 | goto out; | |
297 | ||
f0d5c6f4 | 298 | if (psmouse->state <= PSMOUSE_RESYNCING) |
1da177e4 LT |
299 | goto out; |
300 | ||
301 | if (psmouse->state == PSMOUSE_ACTIVATED && | |
302 | psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) { | |
f0d5c6f4 | 303 | printk(KERN_INFO "psmouse.c: %s at %s lost synchronization, throwing %d bytes away.\n", |
1da177e4 | 304 | psmouse->name, psmouse->phys, psmouse->pktcnt); |
f0d5c6f4 DT |
305 | psmouse->badbyte = psmouse->packet[0]; |
306 | __psmouse_set_state(psmouse, PSMOUSE_RESYNCING); | |
307 | queue_work(kpsmoused_wq, &psmouse->resync_work); | |
308 | goto out; | |
1da177e4 LT |
309 | } |
310 | ||
1da177e4 | 311 | psmouse->packet[psmouse->pktcnt++] = data; |
f0d5c6f4 DT |
312 | /* |
313 | * Check if this is a new device announcement (0xAA 0x00) | |
314 | */ | |
315 | if (unlikely(psmouse->packet[0] == PSMOUSE_RET_BAT && psmouse->pktcnt <= 2)) { | |
89c9b480 DT |
316 | if (psmouse->pktcnt == 1) { |
317 | psmouse->last = jiffies; | |
1da177e4 | 318 | goto out; |
89c9b480 | 319 | } |
1da177e4 | 320 | |
f0d5c6f4 DT |
321 | if (psmouse->packet[1] == PSMOUSE_RET_ID) { |
322 | __psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
323 | serio_reconnect(serio); | |
324 | goto out; | |
1da177e4 | 325 | } |
f0d5c6f4 DT |
326 | /* |
327 | * Not a new device, try processing first byte normally | |
328 | */ | |
329 | psmouse->pktcnt = 1; | |
330 | if (psmouse_handle_byte(psmouse, regs)) | |
331 | goto out; | |
1da177e4 | 332 | |
f0d5c6f4 DT |
333 | psmouse->packet[psmouse->pktcnt++] = data; |
334 | } | |
1da177e4 | 335 | |
f0d5c6f4 DT |
336 | /* |
337 | * See if we need to force resync because mouse was idle for too long | |
338 | */ | |
339 | if (psmouse->state == PSMOUSE_ACTIVATED && | |
340 | psmouse->pktcnt == 1 && psmouse->resync_time && | |
341 | time_after(jiffies, psmouse->last + psmouse->resync_time * HZ)) { | |
342 | psmouse->badbyte = psmouse->packet[0]; | |
343 | __psmouse_set_state(psmouse, PSMOUSE_RESYNCING); | |
344 | queue_work(kpsmoused_wq, &psmouse->resync_work); | |
345 | goto out; | |
346 | } | |
1da177e4 | 347 | |
f0d5c6f4 DT |
348 | psmouse->last = jiffies; |
349 | psmouse_handle_byte(psmouse, regs); | |
1da177e4 | 350 | |
f0d5c6f4 | 351 | out: |
1da177e4 LT |
352 | return IRQ_HANDLED; |
353 | } | |
354 | ||
355 | ||
356 | /* | |
357 | * psmouse_sliced_command() sends an extended PS/2 command to the mouse | |
358 | * using sliced syntax, understood by advanced devices, such as Logitech | |
359 | * or Synaptics touchpads. The command is encoded as: | |
360 | * 0xE6 0xE8 rr 0xE8 ss 0xE8 tt 0xE8 uu where (rr*64)+(ss*16)+(tt*4)+uu | |
361 | * is the command. | |
362 | */ | |
363 | int psmouse_sliced_command(struct psmouse *psmouse, unsigned char command) | |
364 | { | |
365 | int i; | |
366 | ||
367 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11)) | |
368 | return -1; | |
369 | ||
370 | for (i = 6; i >= 0; i -= 2) { | |
371 | unsigned char d = (command >> i) & 3; | |
372 | if (ps2_command(&psmouse->ps2dev, &d, PSMOUSE_CMD_SETRES)) | |
373 | return -1; | |
374 | } | |
375 | ||
376 | return 0; | |
377 | } | |
378 | ||
379 | ||
380 | /* | |
381 | * psmouse_reset() resets the mouse into power-on state. | |
382 | */ | |
383 | int psmouse_reset(struct psmouse *psmouse) | |
384 | { | |
385 | unsigned char param[2]; | |
386 | ||
387 | if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_RESET_BAT)) | |
388 | return -1; | |
389 | ||
390 | if (param[0] != PSMOUSE_RET_BAT && param[1] != PSMOUSE_RET_ID) | |
391 | return -1; | |
392 | ||
393 | return 0; | |
394 | } | |
395 | ||
396 | ||
397 | /* | |
398 | * Genius NetMouse magic init. | |
399 | */ | |
400 | static int genius_detect(struct psmouse *psmouse, int set_properties) | |
401 | { | |
402 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
403 | unsigned char param[4]; | |
404 | ||
405 | param[0] = 3; | |
406 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); | |
407 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
408 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
409 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
410 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); | |
411 | ||
412 | if (param[0] != 0x00 || param[1] != 0x33 || param[2] != 0x55) | |
413 | return -1; | |
414 | ||
415 | if (set_properties) { | |
2e5b636b DT |
416 | set_bit(BTN_EXTRA, psmouse->dev->keybit); |
417 | set_bit(BTN_SIDE, psmouse->dev->keybit); | |
418 | set_bit(REL_WHEEL, psmouse->dev->relbit); | |
1da177e4 LT |
419 | |
420 | psmouse->vendor = "Genius"; | |
a3f3f317 | 421 | psmouse->name = "Mouse"; |
1da177e4 LT |
422 | psmouse->pktsize = 4; |
423 | } | |
424 | ||
425 | return 0; | |
426 | } | |
427 | ||
428 | /* | |
429 | * IntelliMouse magic init. | |
430 | */ | |
431 | static int intellimouse_detect(struct psmouse *psmouse, int set_properties) | |
432 | { | |
433 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
434 | unsigned char param[2]; | |
435 | ||
436 | param[0] = 200; | |
437 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
438 | param[0] = 100; | |
439 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
440 | param[0] = 80; | |
441 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
442 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); | |
443 | ||
444 | if (param[0] != 3) | |
445 | return -1; | |
446 | ||
447 | if (set_properties) { | |
2e5b636b DT |
448 | set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
449 | set_bit(REL_WHEEL, psmouse->dev->relbit); | |
1da177e4 LT |
450 | |
451 | if (!psmouse->vendor) psmouse->vendor = "Generic"; | |
452 | if (!psmouse->name) psmouse->name = "Wheel Mouse"; | |
453 | psmouse->pktsize = 4; | |
454 | } | |
455 | ||
456 | return 0; | |
457 | } | |
458 | ||
459 | /* | |
460 | * Try IntelliMouse/Explorer magic init. | |
461 | */ | |
462 | static int im_explorer_detect(struct psmouse *psmouse, int set_properties) | |
463 | { | |
464 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
465 | unsigned char param[2]; | |
466 | ||
467 | intellimouse_detect(psmouse, 0); | |
468 | ||
469 | param[0] = 200; | |
470 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
471 | param[0] = 200; | |
472 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
473 | param[0] = 80; | |
474 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
475 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); | |
476 | ||
477 | if (param[0] != 4) | |
478 | return -1; | |
479 | ||
b0c9ad8e PB |
480 | /* Magic to enable horizontal scrolling on IntelliMouse 4.0 */ |
481 | param[0] = 200; | |
482 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
483 | param[0] = 80; | |
484 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
485 | param[0] = 40; | |
486 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
487 | ||
1da177e4 | 488 | if (set_properties) { |
2e5b636b DT |
489 | set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
490 | set_bit(REL_WHEEL, psmouse->dev->relbit); | |
b0c9ad8e | 491 | set_bit(REL_HWHEEL, psmouse->dev->relbit); |
2e5b636b DT |
492 | set_bit(BTN_SIDE, psmouse->dev->keybit); |
493 | set_bit(BTN_EXTRA, psmouse->dev->keybit); | |
1da177e4 LT |
494 | |
495 | if (!psmouse->vendor) psmouse->vendor = "Generic"; | |
496 | if (!psmouse->name) psmouse->name = "Explorer Mouse"; | |
497 | psmouse->pktsize = 4; | |
498 | } | |
499 | ||
500 | return 0; | |
501 | } | |
502 | ||
503 | /* | |
504 | * Kensington ThinkingMouse / ExpertMouse magic init. | |
505 | */ | |
506 | static int thinking_detect(struct psmouse *psmouse, int set_properties) | |
507 | { | |
508 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
509 | unsigned char param[2]; | |
e38de678 | 510 | static const unsigned char seq[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20 }; |
1da177e4 LT |
511 | int i; |
512 | ||
513 | param[0] = 10; | |
514 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
515 | param[0] = 0; | |
516 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); | |
e38de678 HD |
517 | for (i = 0; i < ARRAY_SIZE(seq); i++) { |
518 | param[0] = seq[i]; | |
519 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
520 | } | |
1da177e4 LT |
521 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); |
522 | ||
523 | if (param[0] != 2) | |
524 | return -1; | |
525 | ||
526 | if (set_properties) { | |
2e5b636b | 527 | set_bit(BTN_EXTRA, psmouse->dev->keybit); |
1da177e4 LT |
528 | |
529 | psmouse->vendor = "Kensington"; | |
530 | psmouse->name = "ThinkingMouse"; | |
531 | } | |
532 | ||
533 | return 0; | |
534 | } | |
535 | ||
536 | /* | |
537 | * Bare PS/2 protocol "detection". Always succeeds. | |
538 | */ | |
539 | static int ps2bare_detect(struct psmouse *psmouse, int set_properties) | |
540 | { | |
dbf4ccd6 DT |
541 | if (set_properties) { |
542 | if (!psmouse->vendor) psmouse->vendor = "Generic"; | |
543 | if (!psmouse->name) psmouse->name = "Mouse"; | |
544 | } | |
1da177e4 LT |
545 | |
546 | return 0; | |
547 | } | |
548 | ||
dbf4ccd6 | 549 | |
1da177e4 LT |
550 | /* |
551 | * psmouse_extensions() probes for any extensions to the basic PS/2 protocol | |
552 | * the mouse may have. | |
553 | */ | |
554 | ||
555 | static int psmouse_extensions(struct psmouse *psmouse, | |
556 | unsigned int max_proto, int set_properties) | |
557 | { | |
558 | int synaptics_hardware = 0; | |
559 | ||
a15d60f8 DT |
560 | /* |
561 | * We always check for lifebook because it does not disturb mouse | |
562 | * (it only checks DMI information). | |
563 | */ | |
dbf4ccd6 | 564 | if (lifebook_detect(psmouse, set_properties) == 0) { |
a15d60f8 DT |
565 | if (max_proto > PSMOUSE_IMEX) { |
566 | if (!set_properties || lifebook_init(psmouse) == 0) | |
567 | return PSMOUSE_LIFEBOOK; | |
568 | } | |
569 | } | |
02d7f589 | 570 | |
1da177e4 LT |
571 | /* |
572 | * Try Kensington ThinkingMouse (we try first, because synaptics probe | |
573 | * upsets the thinkingmouse). | |
574 | */ | |
575 | ||
576 | if (max_proto > PSMOUSE_IMEX && thinking_detect(psmouse, set_properties) == 0) | |
577 | return PSMOUSE_THINKPS; | |
578 | ||
579 | /* | |
580 | * Try Synaptics TouchPad | |
581 | */ | |
582 | if (max_proto > PSMOUSE_PS2 && synaptics_detect(psmouse, set_properties) == 0) { | |
583 | synaptics_hardware = 1; | |
584 | ||
585 | if (max_proto > PSMOUSE_IMEX) { | |
586 | if (!set_properties || synaptics_init(psmouse) == 0) | |
587 | return PSMOUSE_SYNAPTICS; | |
588 | /* | |
589 | * Some Synaptics touchpads can emulate extended protocols (like IMPS/2). | |
590 | * Unfortunately Logitech/Genius probes confuse some firmware versions so | |
591 | * we'll have to skip them. | |
592 | */ | |
593 | max_proto = PSMOUSE_IMEX; | |
594 | } | |
595 | /* | |
596 | * Make sure that touchpad is in relative mode, gestures (taps) are enabled | |
597 | */ | |
598 | synaptics_reset(psmouse); | |
599 | } | |
600 | ||
601 | /* | |
602 | * Try ALPS TouchPad | |
603 | */ | |
604 | if (max_proto > PSMOUSE_IMEX) { | |
605 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); | |
606 | if (alps_detect(psmouse, set_properties) == 0) { | |
607 | if (!set_properties || alps_init(psmouse) == 0) | |
608 | return PSMOUSE_ALPS; | |
609 | /* | |
610 | * Init failed, try basic relative protocols | |
611 | */ | |
612 | max_proto = PSMOUSE_IMEX; | |
613 | } | |
614 | } | |
615 | ||
616 | if (max_proto > PSMOUSE_IMEX && genius_detect(psmouse, set_properties) == 0) | |
617 | return PSMOUSE_GENPS; | |
618 | ||
619 | if (max_proto > PSMOUSE_IMEX && ps2pp_init(psmouse, set_properties) == 0) | |
620 | return PSMOUSE_PS2PP; | |
621 | ||
ba44995a DT |
622 | if (max_proto > PSMOUSE_IMEX && trackpoint_detect(psmouse, set_properties) == 0) |
623 | return PSMOUSE_TRACKPOINT; | |
624 | ||
1da177e4 LT |
625 | /* |
626 | * Reset to defaults in case the device got confused by extended | |
ba44995a DT |
627 | * protocol probes. Note that we do full reset becuase some mice |
628 | * put themselves to sleep when see PSMOUSE_RESET_DIS. | |
1da177e4 | 629 | */ |
ba44995a | 630 | psmouse_reset(psmouse); |
1da177e4 LT |
631 | |
632 | if (max_proto >= PSMOUSE_IMEX && im_explorer_detect(psmouse, set_properties) == 0) | |
633 | return PSMOUSE_IMEX; | |
634 | ||
635 | if (max_proto >= PSMOUSE_IMPS && intellimouse_detect(psmouse, set_properties) == 0) | |
636 | return PSMOUSE_IMPS; | |
637 | ||
638 | /* | |
639 | * Okay, all failed, we have a standard mouse here. The number of the buttons | |
640 | * is still a question, though. We assume 3. | |
641 | */ | |
642 | ps2bare_detect(psmouse, set_properties); | |
643 | ||
644 | if (synaptics_hardware) { | |
645 | /* | |
646 | * We detected Synaptics hardware but it did not respond to IMPS/2 probes. | |
647 | * We need to reset the touchpad because if there is a track point on the | |
648 | * pass through port it could get disabled while probing for protocol | |
649 | * extensions. | |
650 | */ | |
651 | psmouse_reset(psmouse); | |
1da177e4 LT |
652 | } |
653 | ||
654 | return PSMOUSE_PS2; | |
655 | } | |
656 | ||
e38de678 | 657 | static const struct psmouse_protocol psmouse_protocols[] = { |
dbf4ccd6 DT |
658 | { |
659 | .type = PSMOUSE_PS2, | |
660 | .name = "PS/2", | |
661 | .alias = "bare", | |
662 | .maxproto = 1, | |
663 | .detect = ps2bare_detect, | |
664 | }, | |
665 | { | |
666 | .type = PSMOUSE_PS2PP, | |
667 | .name = "PS2++", | |
668 | .alias = "logitech", | |
669 | .detect = ps2pp_init, | |
670 | }, | |
671 | { | |
672 | .type = PSMOUSE_THINKPS, | |
673 | .name = "ThinkPS/2", | |
674 | .alias = "thinkps", | |
675 | .detect = thinking_detect, | |
676 | }, | |
677 | { | |
678 | .type = PSMOUSE_GENPS, | |
679 | .name = "GenPS/2", | |
680 | .alias = "genius", | |
681 | .detect = genius_detect, | |
682 | }, | |
683 | { | |
684 | .type = PSMOUSE_IMPS, | |
685 | .name = "ImPS/2", | |
686 | .alias = "imps", | |
687 | .maxproto = 1, | |
688 | .detect = intellimouse_detect, | |
689 | }, | |
690 | { | |
691 | .type = PSMOUSE_IMEX, | |
692 | .name = "ImExPS/2", | |
693 | .alias = "exps", | |
694 | .maxproto = 1, | |
695 | .detect = im_explorer_detect, | |
696 | }, | |
697 | { | |
698 | .type = PSMOUSE_SYNAPTICS, | |
699 | .name = "SynPS/2", | |
700 | .alias = "synaptics", | |
701 | .detect = synaptics_detect, | |
702 | .init = synaptics_init, | |
703 | }, | |
704 | { | |
705 | .type = PSMOUSE_ALPS, | |
706 | .name = "AlpsPS/2", | |
707 | .alias = "alps", | |
708 | .detect = alps_detect, | |
709 | .init = alps_init, | |
710 | }, | |
711 | { | |
712 | .type = PSMOUSE_LIFEBOOK, | |
713 | .name = "LBPS/2", | |
714 | .alias = "lifebook", | |
715 | .init = lifebook_init, | |
716 | }, | |
541e316a SE |
717 | { |
718 | .type = PSMOUSE_TRACKPOINT, | |
719 | .name = "TPPS/2", | |
720 | .alias = "trackpoint", | |
721 | .detect = trackpoint_detect, | |
722 | }, | |
dbf4ccd6 DT |
723 | { |
724 | .type = PSMOUSE_AUTO, | |
725 | .name = "auto", | |
726 | .alias = "any", | |
727 | .maxproto = 1, | |
728 | }, | |
729 | }; | |
730 | ||
e38de678 | 731 | static const struct psmouse_protocol *psmouse_protocol_by_type(enum psmouse_type type) |
dbf4ccd6 DT |
732 | { |
733 | int i; | |
734 | ||
735 | for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++) | |
736 | if (psmouse_protocols[i].type == type) | |
737 | return &psmouse_protocols[i]; | |
738 | ||
739 | WARN_ON(1); | |
740 | return &psmouse_protocols[0]; | |
741 | } | |
742 | ||
e38de678 | 743 | static const struct psmouse_protocol *psmouse_protocol_by_name(const char *name, size_t len) |
dbf4ccd6 | 744 | { |
e38de678 | 745 | const struct psmouse_protocol *p; |
dbf4ccd6 DT |
746 | int i; |
747 | ||
748 | for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++) { | |
749 | p = &psmouse_protocols[i]; | |
750 | ||
751 | if ((strlen(p->name) == len && !strncmp(p->name, name, len)) || | |
752 | (strlen(p->alias) == len && !strncmp(p->alias, name, len))) | |
753 | return &psmouse_protocols[i]; | |
754 | } | |
755 | ||
756 | return NULL; | |
757 | } | |
758 | ||
759 | ||
1da177e4 LT |
760 | /* |
761 | * psmouse_probe() probes for a PS/2 mouse. | |
762 | */ | |
763 | ||
764 | static int psmouse_probe(struct psmouse *psmouse) | |
765 | { | |
766 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
767 | unsigned char param[2]; | |
768 | ||
769 | /* | |
770 | * First, we check if it's a mouse. It should send 0x00 or 0x03 | |
771 | * in case of an IntelliMouse in 4-byte mode or 0x04 for IM Explorer. | |
7741e931 VP |
772 | * Sunrex K8561 IR Keyboard/Mouse reports 0xff on second and subsequent |
773 | * ID queries, probably due to a firmware bug. | |
1da177e4 LT |
774 | */ |
775 | ||
776 | param[0] = 0xa5; | |
777 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) | |
778 | return -1; | |
779 | ||
7741e931 VP |
780 | if (param[0] != 0x00 && param[0] != 0x03 && |
781 | param[0] != 0x04 && param[0] != 0xff) | |
1da177e4 LT |
782 | return -1; |
783 | ||
784 | /* | |
785 | * Then we reset and disable the mouse so that it doesn't generate events. | |
786 | */ | |
787 | ||
788 | if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_DIS)) | |
789 | printk(KERN_WARNING "psmouse.c: Failed to reset mouse on %s\n", ps2dev->serio->phys); | |
790 | ||
791 | return 0; | |
792 | } | |
793 | ||
794 | /* | |
795 | * Here we set the mouse resolution. | |
796 | */ | |
797 | ||
798 | void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution) | |
799 | { | |
e38de678 HD |
800 | static const unsigned char params[] = { 0, 1, 2, 2, 3 }; |
801 | unsigned char p; | |
1da177e4 LT |
802 | |
803 | if (resolution == 0 || resolution > 200) | |
804 | resolution = 200; | |
805 | ||
e38de678 HD |
806 | p = params[resolution / 50]; |
807 | ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES); | |
808 | psmouse->resolution = 25 << p; | |
1da177e4 LT |
809 | } |
810 | ||
811 | /* | |
812 | * Here we set the mouse report rate. | |
813 | */ | |
814 | ||
815 | static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate) | |
816 | { | |
e38de678 HD |
817 | static const unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 }; |
818 | unsigned char r; | |
1da177e4 LT |
819 | int i = 0; |
820 | ||
821 | while (rates[i] > rate) i++; | |
e38de678 HD |
822 | r = rates[i]; |
823 | ps2_command(&psmouse->ps2dev, &r, PSMOUSE_CMD_SETRATE); | |
824 | psmouse->rate = r; | |
1da177e4 LT |
825 | } |
826 | ||
827 | /* | |
828 | * psmouse_initialize() initializes the mouse to a sane state. | |
829 | */ | |
830 | ||
831 | static void psmouse_initialize(struct psmouse *psmouse) | |
832 | { | |
833 | /* | |
834 | * We set the mouse into streaming mode. | |
835 | */ | |
836 | ||
837 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM); | |
838 | ||
839 | /* | |
840 | * We set the mouse report rate, resolution and scaling. | |
841 | */ | |
842 | ||
843 | if (psmouse_max_proto != PSMOUSE_PS2) { | |
844 | psmouse->set_rate(psmouse, psmouse->rate); | |
845 | psmouse->set_resolution(psmouse, psmouse->resolution); | |
846 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
847 | } | |
848 | } | |
849 | ||
1da177e4 LT |
850 | /* |
851 | * psmouse_activate() enables the mouse so that we get motion reports from it. | |
852 | */ | |
853 | ||
854 | static void psmouse_activate(struct psmouse *psmouse) | |
855 | { | |
856 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE)) | |
857 | printk(KERN_WARNING "psmouse.c: Failed to enable mouse on %s\n", | |
858 | psmouse->ps2dev.serio->phys); | |
859 | ||
860 | psmouse_set_state(psmouse, PSMOUSE_ACTIVATED); | |
861 | } | |
862 | ||
863 | ||
864 | /* | |
865 | * psmouse_deactivate() puts the mouse into poll mode so that we don't get motion | |
866 | * reports from it unless we explicitely request it. | |
867 | */ | |
868 | ||
869 | static void psmouse_deactivate(struct psmouse *psmouse) | |
870 | { | |
871 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE)) | |
872 | printk(KERN_WARNING "psmouse.c: Failed to deactivate mouse on %s\n", | |
873 | psmouse->ps2dev.serio->phys); | |
874 | ||
875 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
876 | } | |
877 | ||
f0d5c6f4 DT |
878 | /* |
879 | * psmouse_poll() - default poll hanlder. Everyone except for ALPS uses it. | |
880 | */ | |
881 | ||
882 | static int psmouse_poll(struct psmouse *psmouse) | |
883 | { | |
884 | return ps2_command(&psmouse->ps2dev, psmouse->packet, | |
885 | PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)); | |
886 | } | |
887 | ||
888 | ||
889 | /* | |
890 | * psmouse_resync() attempts to re-validate current protocol. | |
891 | */ | |
892 | ||
893 | static void psmouse_resync(void *p) | |
894 | { | |
895 | struct psmouse *psmouse = p, *parent = NULL; | |
896 | struct serio *serio = psmouse->ps2dev.serio; | |
897 | psmouse_ret_t rc = PSMOUSE_GOOD_DATA; | |
898 | int failed = 0, enabled = 0; | |
899 | int i; | |
900 | ||
c14471dc | 901 | mutex_lock(&psmouse_mutex); |
f0d5c6f4 DT |
902 | |
903 | if (psmouse->state != PSMOUSE_RESYNCING) | |
904 | goto out; | |
905 | ||
906 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
907 | parent = serio_get_drvdata(serio->parent); | |
908 | psmouse_deactivate(parent); | |
909 | } | |
910 | ||
911 | /* | |
912 | * Some mice don't ACK commands sent while they are in the middle of | |
913 | * transmitting motion packet. To avoid delay we use ps2_sendbyte() | |
914 | * instead of ps2_command() which would wait for 200ms for an ACK | |
915 | * that may never come. | |
916 | * As an additional quirk ALPS touchpads may not only forget to ACK | |
917 | * disable command but will stop reporting taps, so if we see that | |
918 | * mouse at least once ACKs disable we will do full reconnect if ACK | |
919 | * is missing. | |
920 | */ | |
921 | psmouse->num_resyncs++; | |
922 | ||
923 | if (ps2_sendbyte(&psmouse->ps2dev, PSMOUSE_CMD_DISABLE, 20)) { | |
924 | if (psmouse->num_resyncs < 3 || psmouse->acks_disable_command) | |
925 | failed = 1; | |
926 | } else | |
927 | psmouse->acks_disable_command = 1; | |
928 | ||
929 | /* | |
930 | * Poll the mouse. If it was reset the packet will be shorter than | |
931 | * psmouse->pktsize and ps2_command will fail. We do not expect and | |
932 | * do not handle scenario when mouse "upgrades" its protocol while | |
933 | * disconnected since it would require additional delay. If we ever | |
934 | * see a mouse that does it we'll adjust the code. | |
935 | */ | |
936 | if (!failed) { | |
937 | if (psmouse->poll(psmouse)) | |
938 | failed = 1; | |
939 | else { | |
940 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
941 | for (i = 0; i < psmouse->pktsize; i++) { | |
942 | psmouse->pktcnt++; | |
943 | rc = psmouse->protocol_handler(psmouse, NULL); | |
944 | if (rc != PSMOUSE_GOOD_DATA) | |
945 | break; | |
946 | } | |
947 | if (rc != PSMOUSE_FULL_PACKET) | |
948 | failed = 1; | |
949 | psmouse_set_state(psmouse, PSMOUSE_RESYNCING); | |
950 | } | |
951 | } | |
952 | /* | |
953 | * Now try to enable mouse. We try to do that even if poll failed and also | |
954 | * repeat our attempts 5 times, otherwise we may be left out with disabled | |
955 | * mouse. | |
956 | */ | |
957 | for (i = 0; i < 5; i++) { | |
958 | if (!ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { | |
959 | enabled = 1; | |
960 | break; | |
961 | } | |
962 | msleep(200); | |
963 | } | |
964 | ||
965 | if (!enabled) { | |
966 | printk(KERN_WARNING "psmouse.c: failed to re-enable mouse on %s\n", | |
967 | psmouse->ps2dev.serio->phys); | |
968 | failed = 1; | |
969 | } | |
970 | ||
971 | if (failed) { | |
972 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
973 | printk(KERN_INFO "psmouse.c: resync failed, issuing reconnect request\n"); | |
974 | serio_reconnect(serio); | |
975 | } else | |
976 | psmouse_set_state(psmouse, PSMOUSE_ACTIVATED); | |
977 | ||
978 | if (parent) | |
979 | psmouse_activate(parent); | |
980 | out: | |
c14471dc | 981 | mutex_unlock(&psmouse_mutex); |
f0d5c6f4 | 982 | } |
1da177e4 LT |
983 | |
984 | /* | |
985 | * psmouse_cleanup() resets the mouse into power-on state. | |
986 | */ | |
987 | ||
988 | static void psmouse_cleanup(struct serio *serio) | |
989 | { | |
990 | struct psmouse *psmouse = serio_get_drvdata(serio); | |
991 | ||
992 | psmouse_reset(psmouse); | |
993 | } | |
994 | ||
995 | /* | |
996 | * psmouse_disconnect() closes and frees. | |
997 | */ | |
998 | ||
999 | static void psmouse_disconnect(struct serio *serio) | |
1000 | { | |
04df1925 DT |
1001 | struct psmouse *psmouse, *parent = NULL; |
1002 | ||
1003 | psmouse = serio_get_drvdata(serio); | |
1da177e4 | 1004 | |
cfe9e888 | 1005 | sysfs_remove_group(&serio->dev.kobj, &psmouse_attribute_group); |
1da177e4 | 1006 | |
c14471dc | 1007 | mutex_lock(&psmouse_mutex); |
04df1925 | 1008 | |
1da177e4 LT |
1009 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); |
1010 | ||
f0d5c6f4 | 1011 | /* make sure we don't have a resync in progress */ |
c14471dc | 1012 | mutex_unlock(&psmouse_mutex); |
f0d5c6f4 | 1013 | flush_workqueue(kpsmoused_wq); |
c14471dc | 1014 | mutex_lock(&psmouse_mutex); |
f0d5c6f4 | 1015 | |
1da177e4 LT |
1016 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { |
1017 | parent = serio_get_drvdata(serio->parent); | |
04df1925 | 1018 | psmouse_deactivate(parent); |
1da177e4 LT |
1019 | } |
1020 | ||
1021 | if (psmouse->disconnect) | |
1022 | psmouse->disconnect(psmouse); | |
1023 | ||
04df1925 DT |
1024 | if (parent && parent->pt_deactivate) |
1025 | parent->pt_deactivate(parent); | |
1026 | ||
1da177e4 LT |
1027 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); |
1028 | ||
1da177e4 LT |
1029 | serio_close(serio); |
1030 | serio_set_drvdata(serio, NULL); | |
2e5b636b | 1031 | input_unregister_device(psmouse->dev); |
1da177e4 | 1032 | kfree(psmouse); |
04df1925 DT |
1033 | |
1034 | if (parent) | |
1035 | psmouse_activate(parent); | |
1036 | ||
c14471dc | 1037 | mutex_unlock(&psmouse_mutex); |
1da177e4 LT |
1038 | } |
1039 | ||
e38de678 | 1040 | static int psmouse_switch_protocol(struct psmouse *psmouse, const struct psmouse_protocol *proto) |
dbf4ccd6 | 1041 | { |
2e5b636b | 1042 | struct input_dev *input_dev = psmouse->dev; |
dbf4ccd6 | 1043 | |
2e5b636b DT |
1044 | input_dev->private = psmouse; |
1045 | input_dev->cdev.dev = &psmouse->ps2dev.serio->dev; | |
dbf4ccd6 | 1046 | |
2e5b636b DT |
1047 | input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL); |
1048 | input_dev->keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT); | |
1049 | input_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y); | |
dbf4ccd6 DT |
1050 | |
1051 | psmouse->set_rate = psmouse_set_rate; | |
1052 | psmouse->set_resolution = psmouse_set_resolution; | |
f0d5c6f4 | 1053 | psmouse->poll = psmouse_poll; |
dbf4ccd6 DT |
1054 | psmouse->protocol_handler = psmouse_process_byte; |
1055 | psmouse->pktsize = 3; | |
1056 | ||
1057 | if (proto && (proto->detect || proto->init)) { | |
1058 | if (proto->detect && proto->detect(psmouse, 1) < 0) | |
1059 | return -1; | |
1060 | ||
1061 | if (proto->init && proto->init(psmouse) < 0) | |
1062 | return -1; | |
1063 | ||
1064 | psmouse->type = proto->type; | |
1065 | } | |
1066 | else | |
1067 | psmouse->type = psmouse_extensions(psmouse, psmouse_max_proto, 1); | |
1068 | ||
f0d5c6f4 DT |
1069 | /* |
1070 | * If mouse's packet size is 3 there is no point in polling the | |
1071 | * device in hopes to detect protocol reset - we won't get less | |
1072 | * than 3 bytes response anyhow. | |
1073 | */ | |
1074 | if (psmouse->pktsize == 3) | |
1075 | psmouse->resync_time = 0; | |
1076 | ||
1077 | /* | |
1078 | * Some smart KVMs fake response to POLL command returning just | |
1079 | * 3 bytes and messing up our resync logic, so if initial poll | |
1080 | * fails we won't try polling the device anymore. Hopefully | |
1081 | * such KVM will maintain initially selected protocol. | |
1082 | */ | |
1083 | if (psmouse->resync_time && psmouse->poll(psmouse)) | |
1084 | psmouse->resync_time = 0; | |
1085 | ||
08ffce45 DT |
1086 | snprintf(psmouse->devname, sizeof(psmouse->devname), "%s %s %s", |
1087 | psmouse_protocol_by_type(psmouse->type)->name, psmouse->vendor, psmouse->name); | |
dbf4ccd6 | 1088 | |
2e5b636b DT |
1089 | input_dev->name = psmouse->devname; |
1090 | input_dev->phys = psmouse->phys; | |
1091 | input_dev->id.bustype = BUS_I8042; | |
1092 | input_dev->id.vendor = 0x0002; | |
1093 | input_dev->id.product = psmouse->type; | |
1094 | input_dev->id.version = psmouse->model; | |
dbf4ccd6 DT |
1095 | |
1096 | return 0; | |
1097 | } | |
1098 | ||
1da177e4 LT |
1099 | /* |
1100 | * psmouse_connect() is a callback from the serio module when | |
1101 | * an unhandled serio port is found. | |
1102 | */ | |
1103 | static int psmouse_connect(struct serio *serio, struct serio_driver *drv) | |
1104 | { | |
1105 | struct psmouse *psmouse, *parent = NULL; | |
2e5b636b DT |
1106 | struct input_dev *input_dev; |
1107 | int retval = -ENOMEM; | |
1da177e4 | 1108 | |
c14471dc | 1109 | mutex_lock(&psmouse_mutex); |
04df1925 | 1110 | |
1da177e4 LT |
1111 | /* |
1112 | * If this is a pass-through port deactivate parent so the device | |
1113 | * connected to this port can be successfully identified | |
1114 | */ | |
1115 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1116 | parent = serio_get_drvdata(serio->parent); | |
1117 | psmouse_deactivate(parent); | |
1118 | } | |
1119 | ||
2e5b636b DT |
1120 | psmouse = kzalloc(sizeof(struct psmouse), GFP_KERNEL); |
1121 | input_dev = input_allocate_device(); | |
1122 | if (!psmouse || !input_dev) | |
1da177e4 | 1123 | goto out; |
1da177e4 | 1124 | |
1da177e4 | 1125 | ps2_init(&psmouse->ps2dev, serio); |
f0d5c6f4 | 1126 | INIT_WORK(&psmouse->resync_work, psmouse_resync, psmouse); |
2e5b636b | 1127 | psmouse->dev = input_dev; |
08ffce45 | 1128 | snprintf(psmouse->phys, sizeof(psmouse->phys), "%s/input0", serio->phys); |
dbf4ccd6 | 1129 | |
1da177e4 LT |
1130 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); |
1131 | ||
1132 | serio_set_drvdata(serio, psmouse); | |
1133 | ||
1134 | retval = serio_open(serio, drv); | |
2e5b636b | 1135 | if (retval) |
1da177e4 | 1136 | goto out; |
1da177e4 LT |
1137 | |
1138 | if (psmouse_probe(psmouse) < 0) { | |
1139 | serio_close(serio); | |
1da177e4 LT |
1140 | retval = -ENODEV; |
1141 | goto out; | |
1142 | } | |
1143 | ||
1144 | psmouse->rate = psmouse_rate; | |
1145 | psmouse->resolution = psmouse_resolution; | |
1146 | psmouse->resetafter = psmouse_resetafter; | |
f0d5c6f4 | 1147 | psmouse->resync_time = parent ? 0 : psmouse_resync_time; |
1da177e4 | 1148 | psmouse->smartscroll = psmouse_smartscroll; |
1da177e4 | 1149 | |
dbf4ccd6 | 1150 | psmouse_switch_protocol(psmouse, NULL); |
1da177e4 | 1151 | |
1da177e4 | 1152 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); |
1da177e4 LT |
1153 | psmouse_initialize(psmouse); |
1154 | ||
2e5b636b DT |
1155 | input_register_device(psmouse->dev); |
1156 | ||
1da177e4 LT |
1157 | if (parent && parent->pt_activate) |
1158 | parent->pt_activate(parent); | |
1159 | ||
cfe9e888 | 1160 | sysfs_create_group(&serio->dev.kobj, &psmouse_attribute_group); |
1da177e4 LT |
1161 | |
1162 | psmouse_activate(psmouse); | |
1163 | ||
1164 | retval = 0; | |
1165 | ||
1166 | out: | |
2e5b636b DT |
1167 | if (retval) { |
1168 | serio_set_drvdata(serio, NULL); | |
1169 | input_free_device(input_dev); | |
1170 | kfree(psmouse); | |
1171 | } | |
1172 | ||
04df1925 | 1173 | /* If this is a pass-through port the parent needs to be re-activated */ |
1da177e4 LT |
1174 | if (parent) |
1175 | psmouse_activate(parent); | |
1176 | ||
c14471dc | 1177 | mutex_unlock(&psmouse_mutex); |
1da177e4 LT |
1178 | return retval; |
1179 | } | |
1180 | ||
1181 | ||
1182 | static int psmouse_reconnect(struct serio *serio) | |
1183 | { | |
1184 | struct psmouse *psmouse = serio_get_drvdata(serio); | |
1185 | struct psmouse *parent = NULL; | |
1186 | struct serio_driver *drv = serio->drv; | |
1187 | int rc = -1; | |
1188 | ||
1189 | if (!drv || !psmouse) { | |
1190 | printk(KERN_DEBUG "psmouse: reconnect request, but serio is disconnected, ignoring...\n"); | |
1191 | return -1; | |
1192 | } | |
1193 | ||
c14471dc | 1194 | mutex_lock(&psmouse_mutex); |
04df1925 | 1195 | |
1da177e4 LT |
1196 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { |
1197 | parent = serio_get_drvdata(serio->parent); | |
1198 | psmouse_deactivate(parent); | |
1199 | } | |
1200 | ||
1201 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); | |
1202 | ||
1203 | if (psmouse->reconnect) { | |
1204 | if (psmouse->reconnect(psmouse)) | |
1205 | goto out; | |
1206 | } else if (psmouse_probe(psmouse) < 0 || | |
1207 | psmouse->type != psmouse_extensions(psmouse, psmouse_max_proto, 0)) | |
1208 | goto out; | |
1209 | ||
1210 | /* ok, the device type (and capabilities) match the old one, | |
1211 | * we can continue using it, complete intialization | |
1212 | */ | |
1213 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
1214 | ||
1215 | psmouse_initialize(psmouse); | |
1216 | ||
1217 | if (parent && parent->pt_activate) | |
1218 | parent->pt_activate(parent); | |
1219 | ||
1220 | psmouse_activate(psmouse); | |
1221 | rc = 0; | |
1222 | ||
1223 | out: | |
1224 | /* If this is a pass-through port the parent waits to be activated */ | |
1225 | if (parent) | |
1226 | psmouse_activate(parent); | |
1227 | ||
c14471dc | 1228 | mutex_unlock(&psmouse_mutex); |
1da177e4 LT |
1229 | return rc; |
1230 | } | |
1231 | ||
1232 | static struct serio_device_id psmouse_serio_ids[] = { | |
1233 | { | |
1234 | .type = SERIO_8042, | |
1235 | .proto = SERIO_ANY, | |
1236 | .id = SERIO_ANY, | |
1237 | .extra = SERIO_ANY, | |
1238 | }, | |
1239 | { | |
1240 | .type = SERIO_PS_PSTHRU, | |
1241 | .proto = SERIO_ANY, | |
1242 | .id = SERIO_ANY, | |
1243 | .extra = SERIO_ANY, | |
1244 | }, | |
1245 | { 0 } | |
1246 | }; | |
1247 | ||
1248 | MODULE_DEVICE_TABLE(serio, psmouse_serio_ids); | |
1249 | ||
1250 | static struct serio_driver psmouse_drv = { | |
1251 | .driver = { | |
1252 | .name = "psmouse", | |
1253 | }, | |
1254 | .description = DRIVER_DESC, | |
1255 | .id_table = psmouse_serio_ids, | |
1256 | .interrupt = psmouse_interrupt, | |
1257 | .connect = psmouse_connect, | |
1258 | .reconnect = psmouse_reconnect, | |
1259 | .disconnect = psmouse_disconnect, | |
1260 | .cleanup = psmouse_cleanup, | |
1261 | }; | |
1262 | ||
cfe9e888 DT |
1263 | ssize_t psmouse_attr_show_helper(struct device *dev, struct device_attribute *devattr, |
1264 | char *buf) | |
1da177e4 LT |
1265 | { |
1266 | struct serio *serio = to_serio_port(dev); | |
cfe9e888 DT |
1267 | struct psmouse_attribute *attr = to_psmouse_attr(devattr); |
1268 | struct psmouse *psmouse; | |
1da177e4 LT |
1269 | int retval; |
1270 | ||
1271 | retval = serio_pin_driver(serio); | |
1272 | if (retval) | |
1273 | return retval; | |
1274 | ||
1275 | if (serio->drv != &psmouse_drv) { | |
1276 | retval = -ENODEV; | |
1277 | goto out; | |
1278 | } | |
1279 | ||
cfe9e888 DT |
1280 | psmouse = serio_get_drvdata(serio); |
1281 | ||
1282 | retval = attr->show(psmouse, attr->data, buf); | |
1da177e4 LT |
1283 | |
1284 | out: | |
1285 | serio_unpin_driver(serio); | |
1286 | return retval; | |
1287 | } | |
1288 | ||
cfe9e888 DT |
1289 | ssize_t psmouse_attr_set_helper(struct device *dev, struct device_attribute *devattr, |
1290 | const char *buf, size_t count) | |
1da177e4 LT |
1291 | { |
1292 | struct serio *serio = to_serio_port(dev); | |
cfe9e888 DT |
1293 | struct psmouse_attribute *attr = to_psmouse_attr(devattr); |
1294 | struct psmouse *psmouse, *parent = NULL; | |
1da177e4 LT |
1295 | int retval; |
1296 | ||
1297 | retval = serio_pin_driver(serio); | |
1298 | if (retval) | |
1299 | return retval; | |
1300 | ||
1301 | if (serio->drv != &psmouse_drv) { | |
1302 | retval = -ENODEV; | |
04df1925 DT |
1303 | goto out_unpin; |
1304 | } | |
1305 | ||
c14471dc | 1306 | retval = mutex_lock_interruptible(&psmouse_mutex); |
04df1925 DT |
1307 | if (retval) |
1308 | goto out_unpin; | |
1309 | ||
cfe9e888 DT |
1310 | psmouse = serio_get_drvdata(serio); |
1311 | ||
04df1925 DT |
1312 | if (psmouse->state == PSMOUSE_IGNORE) { |
1313 | retval = -ENODEV; | |
c14471dc | 1314 | goto out_unlock; |
1da177e4 LT |
1315 | } |
1316 | ||
1317 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1318 | parent = serio_get_drvdata(serio->parent); | |
1319 | psmouse_deactivate(parent); | |
1320 | } | |
dbf4ccd6 | 1321 | |
1da177e4 LT |
1322 | psmouse_deactivate(psmouse); |
1323 | ||
cfe9e888 | 1324 | retval = attr->set(psmouse, attr->data, buf, count); |
1da177e4 | 1325 | |
dbf4ccd6 DT |
1326 | if (retval != -ENODEV) |
1327 | psmouse_activate(psmouse); | |
1328 | ||
1da177e4 LT |
1329 | if (parent) |
1330 | psmouse_activate(parent); | |
1331 | ||
c14471dc IM |
1332 | out_unlock: |
1333 | mutex_unlock(&psmouse_mutex); | |
04df1925 | 1334 | out_unpin: |
1da177e4 LT |
1335 | serio_unpin_driver(serio); |
1336 | return retval; | |
1337 | } | |
1338 | ||
cfe9e888 DT |
1339 | static ssize_t psmouse_show_int_attr(struct psmouse *psmouse, void *offset, char *buf) |
1340 | { | |
1341 | unsigned long *field = (unsigned long *)((char *)psmouse + (size_t)offset); | |
1342 | ||
1343 | return sprintf(buf, "%lu\n", *field); | |
1344 | } | |
1345 | ||
1346 | static ssize_t psmouse_set_int_attr(struct psmouse *psmouse, void *offset, const char *buf, size_t count) | |
1347 | { | |
1348 | unsigned long *field = (unsigned long *)((char *)psmouse + (size_t)offset); | |
1349 | unsigned long value; | |
1350 | char *rest; | |
1351 | ||
1352 | value = simple_strtoul(buf, &rest, 10); | |
1353 | if (*rest) | |
1354 | return -EINVAL; | |
1355 | ||
1356 | *field = value; | |
1357 | ||
1358 | return count; | |
1359 | } | |
1360 | ||
1361 | static ssize_t psmouse_attr_show_protocol(struct psmouse *psmouse, void *data, char *buf) | |
dbf4ccd6 DT |
1362 | { |
1363 | return sprintf(buf, "%s\n", psmouse_protocol_by_type(psmouse->type)->name); | |
1364 | } | |
1365 | ||
cfe9e888 | 1366 | static ssize_t psmouse_attr_set_protocol(struct psmouse *psmouse, void *data, const char *buf, size_t count) |
dbf4ccd6 DT |
1367 | { |
1368 | struct serio *serio = psmouse->ps2dev.serio; | |
1369 | struct psmouse *parent = NULL; | |
2e5b636b | 1370 | struct input_dev *new_dev; |
e38de678 | 1371 | const struct psmouse_protocol *proto; |
dbf4ccd6 DT |
1372 | int retry = 0; |
1373 | ||
1374 | if (!(proto = psmouse_protocol_by_name(buf, count))) | |
1375 | return -EINVAL; | |
1376 | ||
1377 | if (psmouse->type == proto->type) | |
1378 | return count; | |
1379 | ||
2e5b636b DT |
1380 | if (!(new_dev = input_allocate_device())) |
1381 | return -ENOMEM; | |
1382 | ||
dbf4ccd6 DT |
1383 | while (serio->child) { |
1384 | if (++retry > 3) { | |
1385 | printk(KERN_WARNING "psmouse: failed to destroy child port, protocol change aborted.\n"); | |
2e5b636b | 1386 | input_free_device(new_dev); |
dbf4ccd6 DT |
1387 | return -EIO; |
1388 | } | |
1389 | ||
c14471dc | 1390 | mutex_unlock(&psmouse_mutex); |
dbf4ccd6 DT |
1391 | serio_unpin_driver(serio); |
1392 | serio_unregister_child_port(serio); | |
1393 | serio_pin_driver_uninterruptible(serio); | |
c14471dc | 1394 | mutex_lock(&psmouse_mutex); |
dbf4ccd6 | 1395 | |
2e5b636b DT |
1396 | if (serio->drv != &psmouse_drv) { |
1397 | input_free_device(new_dev); | |
dbf4ccd6 | 1398 | return -ENODEV; |
2e5b636b | 1399 | } |
dbf4ccd6 | 1400 | |
2e5b636b DT |
1401 | if (psmouse->type == proto->type) { |
1402 | input_free_device(new_dev); | |
dbf4ccd6 | 1403 | return count; /* switched by other thread */ |
2e5b636b | 1404 | } |
dbf4ccd6 DT |
1405 | } |
1406 | ||
1407 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1408 | parent = serio_get_drvdata(serio->parent); | |
1409 | if (parent->pt_deactivate) | |
1410 | parent->pt_deactivate(parent); | |
1411 | } | |
1412 | ||
1413 | if (psmouse->disconnect) | |
1414 | psmouse->disconnect(psmouse); | |
1415 | ||
1416 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
2e5b636b | 1417 | input_unregister_device(psmouse->dev); |
dbf4ccd6 | 1418 | |
2e5b636b | 1419 | psmouse->dev = new_dev; |
dbf4ccd6 DT |
1420 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); |
1421 | ||
1422 | if (psmouse_switch_protocol(psmouse, proto) < 0) { | |
1423 | psmouse_reset(psmouse); | |
1424 | /* default to PSMOUSE_PS2 */ | |
1425 | psmouse_switch_protocol(psmouse, &psmouse_protocols[0]); | |
1426 | } | |
1427 | ||
1428 | psmouse_initialize(psmouse); | |
1429 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
1430 | ||
2e5b636b | 1431 | input_register_device(psmouse->dev); |
dbf4ccd6 DT |
1432 | |
1433 | if (parent && parent->pt_activate) | |
1434 | parent->pt_activate(parent); | |
1435 | ||
1436 | return count; | |
1437 | } | |
1438 | ||
cfe9e888 | 1439 | static ssize_t psmouse_attr_set_rate(struct psmouse *psmouse, void *data, const char *buf, size_t count) |
1da177e4 LT |
1440 | { |
1441 | unsigned long value; | |
1442 | char *rest; | |
1443 | ||
1444 | value = simple_strtoul(buf, &rest, 10); | |
1445 | if (*rest) | |
1446 | return -EINVAL; | |
1447 | ||
1448 | psmouse->set_rate(psmouse, value); | |
1449 | return count; | |
1450 | } | |
1451 | ||
cfe9e888 | 1452 | static ssize_t psmouse_attr_set_resolution(struct psmouse *psmouse, void *data, const char *buf, size_t count) |
1da177e4 LT |
1453 | { |
1454 | unsigned long value; | |
1455 | char *rest; | |
1456 | ||
1457 | value = simple_strtoul(buf, &rest, 10); | |
1458 | if (*rest) | |
1459 | return -EINVAL; | |
1460 | ||
1461 | psmouse->set_resolution(psmouse, value); | |
1462 | return count; | |
1463 | } | |
1464 | ||
1da177e4 LT |
1465 | |
1466 | static int psmouse_set_maxproto(const char *val, struct kernel_param *kp) | |
1467 | { | |
e38de678 | 1468 | const struct psmouse_protocol *proto; |
1da177e4 LT |
1469 | |
1470 | if (!val) | |
1471 | return -EINVAL; | |
1472 | ||
dbf4ccd6 | 1473 | proto = psmouse_protocol_by_name(val, strlen(val)); |
1da177e4 | 1474 | |
dbf4ccd6 DT |
1475 | if (!proto || !proto->maxproto) |
1476 | return -EINVAL; | |
1da177e4 | 1477 | |
dbf4ccd6 | 1478 | *((unsigned int *)kp->arg) = proto->type; |
1da177e4 | 1479 | |
541e316a | 1480 | return 0; |
1da177e4 LT |
1481 | } |
1482 | ||
1483 | static int psmouse_get_maxproto(char *buffer, struct kernel_param *kp) | |
1484 | { | |
dbf4ccd6 DT |
1485 | int type = *((unsigned int *)kp->arg); |
1486 | ||
1487 | return sprintf(buffer, "%s\n", psmouse_protocol_by_type(type)->name); | |
1da177e4 LT |
1488 | } |
1489 | ||
1490 | static int __init psmouse_init(void) | |
1491 | { | |
f0d5c6f4 DT |
1492 | kpsmoused_wq = create_singlethread_workqueue("kpsmoused"); |
1493 | if (!kpsmoused_wq) { | |
1494 | printk(KERN_ERR "psmouse: failed to create kpsmoused workqueue\n"); | |
1495 | return -ENOMEM; | |
1496 | } | |
1497 | ||
1da177e4 | 1498 | serio_register_driver(&psmouse_drv); |
f0d5c6f4 | 1499 | |
1da177e4 LT |
1500 | return 0; |
1501 | } | |
1502 | ||
1503 | static void __exit psmouse_exit(void) | |
1504 | { | |
1505 | serio_unregister_driver(&psmouse_drv); | |
f0d5c6f4 | 1506 | destroy_workqueue(kpsmoused_wq); |
1da177e4 LT |
1507 | } |
1508 | ||
1509 | module_init(psmouse_init); | |
1510 | module_exit(psmouse_exit); |