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" |
24bf10ab | 31 | #include "touchkit_ps2.h" |
1da177e4 LT |
32 | |
33 | #define DRIVER_DESC "PS/2 mouse driver" | |
34 | ||
35 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>"); | |
36 | MODULE_DESCRIPTION(DRIVER_DESC); | |
37 | MODULE_LICENSE("GPL"); | |
38 | ||
dbf4ccd6 | 39 | static unsigned int psmouse_max_proto = PSMOUSE_AUTO; |
1da177e4 LT |
40 | static int psmouse_set_maxproto(const char *val, struct kernel_param *kp); |
41 | static int psmouse_get_maxproto(char *buffer, struct kernel_param *kp); | |
1da177e4 LT |
42 | #define param_check_proto_abbrev(name, p) __param_check(name, p, unsigned int) |
43 | #define param_set_proto_abbrev psmouse_set_maxproto | |
44 | #define param_get_proto_abbrev psmouse_get_maxproto | |
45 | module_param_named(proto, psmouse_max_proto, proto_abbrev, 0644); | |
dbf4ccd6 | 46 | MODULE_PARM_DESC(proto, "Highest protocol extension to probe (bare, imps, exps, any). Useful for KVM switches."); |
1da177e4 LT |
47 | |
48 | static unsigned int psmouse_resolution = 200; | |
49 | module_param_named(resolution, psmouse_resolution, uint, 0644); | |
50 | MODULE_PARM_DESC(resolution, "Resolution, in dpi."); | |
51 | ||
52 | static unsigned int psmouse_rate = 100; | |
53 | module_param_named(rate, psmouse_rate, uint, 0644); | |
54 | MODULE_PARM_DESC(rate, "Report rate, in reports per second."); | |
55 | ||
56 | static unsigned int psmouse_smartscroll = 1; | |
57 | module_param_named(smartscroll, psmouse_smartscroll, bool, 0644); | |
58 | MODULE_PARM_DESC(smartscroll, "Logitech Smartscroll autorepeat, 1 = enabled (default), 0 = disabled."); | |
59 | ||
f0d5c6f4 | 60 | static unsigned int psmouse_resetafter = 5; |
1da177e4 LT |
61 | module_param_named(resetafter, psmouse_resetafter, uint, 0644); |
62 | MODULE_PARM_DESC(resetafter, "Reset device after so many bad packets (0 = never)."); | |
63 | ||
8bd0ee93 | 64 | static unsigned int psmouse_resync_time; |
f0d5c6f4 DT |
65 | module_param_named(resync_time, psmouse_resync_time, uint, 0644); |
66 | MODULE_PARM_DESC(resync_time, "How long can mouse stay idle before forcing resync (in seconds, 0 = never)."); | |
67 | ||
cfe9e888 DT |
68 | PSMOUSE_DEFINE_ATTR(protocol, S_IWUSR | S_IRUGO, |
69 | NULL, | |
70 | psmouse_attr_show_protocol, psmouse_attr_set_protocol); | |
71 | PSMOUSE_DEFINE_ATTR(rate, S_IWUSR | S_IRUGO, | |
72 | (void *) offsetof(struct psmouse, rate), | |
73 | psmouse_show_int_attr, psmouse_attr_set_rate); | |
74 | PSMOUSE_DEFINE_ATTR(resolution, S_IWUSR | S_IRUGO, | |
75 | (void *) offsetof(struct psmouse, resolution), | |
76 | psmouse_show_int_attr, psmouse_attr_set_resolution); | |
77 | PSMOUSE_DEFINE_ATTR(resetafter, S_IWUSR | S_IRUGO, | |
78 | (void *) offsetof(struct psmouse, resetafter), | |
79 | psmouse_show_int_attr, psmouse_set_int_attr); | |
f0d5c6f4 DT |
80 | PSMOUSE_DEFINE_ATTR(resync_time, S_IWUSR | S_IRUGO, |
81 | (void *) offsetof(struct psmouse, resync_time), | |
82 | psmouse_show_int_attr, psmouse_set_int_attr); | |
cfe9e888 DT |
83 | |
84 | static struct attribute *psmouse_attributes[] = { | |
85 | &psmouse_attr_protocol.dattr.attr, | |
86 | &psmouse_attr_rate.dattr.attr, | |
87 | &psmouse_attr_resolution.dattr.attr, | |
88 | &psmouse_attr_resetafter.dattr.attr, | |
f0d5c6f4 | 89 | &psmouse_attr_resync_time.dattr.attr, |
cfe9e888 DT |
90 | NULL |
91 | }; | |
92 | ||
93 | static struct attribute_group psmouse_attribute_group = { | |
94 | .attrs = psmouse_attributes, | |
95 | }; | |
1da177e4 | 96 | |
04df1925 | 97 | /* |
c14471dc | 98 | * psmouse_mutex protects all operations changing state of mouse |
04df1925 DT |
99 | * (connecting, disconnecting, changing rate or resolution via |
100 | * sysfs). We could use a per-device semaphore but since there | |
101 | * rarely more than one PS/2 mouse connected and since semaphore | |
102 | * is taken in "slow" paths it is not worth it. | |
103 | */ | |
c14471dc | 104 | static DEFINE_MUTEX(psmouse_mutex); |
04df1925 | 105 | |
f0d5c6f4 DT |
106 | static struct workqueue_struct *kpsmoused_wq; |
107 | ||
dbf4ccd6 DT |
108 | struct psmouse_protocol { |
109 | enum psmouse_type type; | |
e38de678 HD |
110 | const char *name; |
111 | const char *alias; | |
dbf4ccd6 DT |
112 | int maxproto; |
113 | int (*detect)(struct psmouse *, int); | |
114 | int (*init)(struct psmouse *); | |
115 | }; | |
1da177e4 LT |
116 | |
117 | /* | |
118 | * psmouse_process_byte() analyzes the PS/2 data stream and reports | |
119 | * relevant events to the input module once full packet has arrived. | |
120 | */ | |
121 | ||
7d12e780 | 122 | static psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse) |
1da177e4 | 123 | { |
2e5b636b | 124 | struct input_dev *dev = psmouse->dev; |
1da177e4 LT |
125 | unsigned char *packet = psmouse->packet; |
126 | ||
127 | if (psmouse->pktcnt < psmouse->pktsize) | |
128 | return PSMOUSE_GOOD_DATA; | |
129 | ||
130 | /* | |
131 | * Full packet accumulated, process it | |
132 | */ | |
133 | ||
1da177e4 LT |
134 | /* |
135 | * Scroll wheel on IntelliMice, scroll buttons on NetMice | |
136 | */ | |
137 | ||
138 | if (psmouse->type == PSMOUSE_IMPS || psmouse->type == PSMOUSE_GENPS) | |
139 | input_report_rel(dev, REL_WHEEL, -(signed char) packet[3]); | |
140 | ||
141 | /* | |
142 | * Scroll wheel and buttons on IntelliMouse Explorer | |
143 | */ | |
144 | ||
145 | if (psmouse->type == PSMOUSE_IMEX) { | |
b0c9ad8e PB |
146 | switch (packet[3] & 0xC0) { |
147 | case 0x80: /* vertical scroll on IntelliMouse Explorer 4.0 */ | |
148 | input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31)); | |
149 | break; | |
150 | case 0x40: /* horizontal scroll on IntelliMouse Explorer 4.0 */ | |
151 | input_report_rel(dev, REL_HWHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31)); | |
152 | break; | |
153 | case 0x00: | |
154 | case 0xC0: | |
155 | input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 8) - (int) (packet[3] & 7)); | |
156 | input_report_key(dev, BTN_SIDE, (packet[3] >> 4) & 1); | |
157 | input_report_key(dev, BTN_EXTRA, (packet[3] >> 5) & 1); | |
158 | break; | |
159 | } | |
1da177e4 LT |
160 | } |
161 | ||
162 | /* | |
163 | * Extra buttons on Genius NewNet 3D | |
164 | */ | |
165 | ||
166 | if (psmouse->type == PSMOUSE_GENPS) { | |
167 | input_report_key(dev, BTN_SIDE, (packet[0] >> 6) & 1); | |
168 | input_report_key(dev, BTN_EXTRA, (packet[0] >> 7) & 1); | |
169 | } | |
170 | ||
171 | /* | |
172 | * Extra button on ThinkingMouse | |
173 | */ | |
174 | if (psmouse->type == PSMOUSE_THINKPS) { | |
175 | input_report_key(dev, BTN_EXTRA, (packet[0] >> 3) & 1); | |
176 | /* Without this bit of weirdness moving up gives wildly high Y changes. */ | |
177 | packet[1] |= (packet[0] & 0x40) << 1; | |
178 | } | |
179 | ||
180 | /* | |
181 | * Generic PS/2 Mouse | |
182 | */ | |
183 | ||
184 | input_report_key(dev, BTN_LEFT, packet[0] & 1); | |
185 | input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1); | |
186 | input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1); | |
187 | ||
188 | input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0); | |
189 | input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0); | |
190 | ||
191 | input_sync(dev); | |
192 | ||
193 | return PSMOUSE_FULL_PACKET; | |
194 | } | |
195 | ||
196 | /* | |
f0d5c6f4 DT |
197 | * __psmouse_set_state() sets new psmouse state and resets all flags. |
198 | */ | |
199 | ||
200 | static inline void __psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state) | |
201 | { | |
202 | psmouse->state = new_state; | |
203 | psmouse->pktcnt = psmouse->out_of_sync = 0; | |
204 | psmouse->ps2dev.flags = 0; | |
205 | psmouse->last = jiffies; | |
206 | } | |
207 | ||
208 | ||
209 | /* | |
210 | * psmouse_set_state() sets new psmouse state and resets all flags and | |
211 | * counters while holding serio lock so fighting with interrupt handler | |
212 | * is not a concern. | |
213 | */ | |
214 | ||
215 | static void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state) | |
216 | { | |
217 | serio_pause_rx(psmouse->ps2dev.serio); | |
218 | __psmouse_set_state(psmouse, new_state); | |
219 | serio_continue_rx(psmouse->ps2dev.serio); | |
220 | } | |
221 | ||
222 | /* | |
223 | * psmouse_handle_byte() processes one byte of the input data stream | |
224 | * by calling corresponding protocol handler. | |
225 | */ | |
226 | ||
7d12e780 | 227 | static int psmouse_handle_byte(struct psmouse *psmouse) |
f0d5c6f4 | 228 | { |
7d12e780 | 229 | psmouse_ret_t rc = psmouse->protocol_handler(psmouse); |
f0d5c6f4 DT |
230 | |
231 | switch (rc) { | |
232 | case PSMOUSE_BAD_DATA: | |
233 | if (psmouse->state == PSMOUSE_ACTIVATED) { | |
234 | printk(KERN_WARNING "psmouse.c: %s at %s lost sync at byte %d\n", | |
235 | psmouse->name, psmouse->phys, psmouse->pktcnt); | |
236 | if (++psmouse->out_of_sync == psmouse->resetafter) { | |
237 | __psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
238 | printk(KERN_NOTICE "psmouse.c: issuing reconnect request\n"); | |
239 | serio_reconnect(psmouse->ps2dev.serio); | |
240 | return -1; | |
241 | } | |
242 | } | |
243 | psmouse->pktcnt = 0; | |
244 | break; | |
245 | ||
246 | case PSMOUSE_FULL_PACKET: | |
247 | psmouse->pktcnt = 0; | |
248 | if (psmouse->out_of_sync) { | |
249 | psmouse->out_of_sync = 0; | |
250 | printk(KERN_NOTICE "psmouse.c: %s at %s - driver resynched.\n", | |
251 | psmouse->name, psmouse->phys); | |
252 | } | |
253 | break; | |
254 | ||
255 | case PSMOUSE_GOOD_DATA: | |
256 | break; | |
257 | } | |
258 | return 0; | |
259 | } | |
260 | ||
261 | /* | |
262 | * psmouse_interrupt() handles incoming characters, either passing them | |
263 | * for normal processing or gathering them as command response. | |
1da177e4 LT |
264 | */ |
265 | ||
266 | static irqreturn_t psmouse_interrupt(struct serio *serio, | |
7d12e780 | 267 | unsigned char data, unsigned int flags) |
1da177e4 LT |
268 | { |
269 | struct psmouse *psmouse = serio_get_drvdata(serio); | |
1da177e4 LT |
270 | |
271 | if (psmouse->state == PSMOUSE_IGNORE) | |
272 | goto out; | |
273 | ||
274 | if (flags & (SERIO_PARITY|SERIO_TIMEOUT)) { | |
275 | if (psmouse->state == PSMOUSE_ACTIVATED) | |
276 | printk(KERN_WARNING "psmouse.c: bad data from KBC -%s%s\n", | |
277 | flags & SERIO_TIMEOUT ? " timeout" : "", | |
278 | flags & SERIO_PARITY ? " bad parity" : ""); | |
279 | ps2_cmd_aborted(&psmouse->ps2dev); | |
280 | goto out; | |
281 | } | |
282 | ||
283 | if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_ACK)) | |
284 | if (ps2_handle_ack(&psmouse->ps2dev, data)) | |
285 | goto out; | |
286 | ||
287 | if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_CMD)) | |
288 | if (ps2_handle_response(&psmouse->ps2dev, data)) | |
289 | goto out; | |
290 | ||
f0d5c6f4 | 291 | if (psmouse->state <= PSMOUSE_RESYNCING) |
1da177e4 LT |
292 | goto out; |
293 | ||
294 | if (psmouse->state == PSMOUSE_ACTIVATED && | |
295 | psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) { | |
f0d5c6f4 | 296 | printk(KERN_INFO "psmouse.c: %s at %s lost synchronization, throwing %d bytes away.\n", |
1da177e4 | 297 | psmouse->name, psmouse->phys, psmouse->pktcnt); |
f0d5c6f4 DT |
298 | psmouse->badbyte = psmouse->packet[0]; |
299 | __psmouse_set_state(psmouse, PSMOUSE_RESYNCING); | |
300 | queue_work(kpsmoused_wq, &psmouse->resync_work); | |
301 | goto out; | |
1da177e4 LT |
302 | } |
303 | ||
1da177e4 | 304 | psmouse->packet[psmouse->pktcnt++] = data; |
f0d5c6f4 DT |
305 | /* |
306 | * Check if this is a new device announcement (0xAA 0x00) | |
307 | */ | |
308 | if (unlikely(psmouse->packet[0] == PSMOUSE_RET_BAT && psmouse->pktcnt <= 2)) { | |
89c9b480 DT |
309 | if (psmouse->pktcnt == 1) { |
310 | psmouse->last = jiffies; | |
1da177e4 | 311 | goto out; |
89c9b480 | 312 | } |
1da177e4 | 313 | |
f0d5c6f4 DT |
314 | if (psmouse->packet[1] == PSMOUSE_RET_ID) { |
315 | __psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
316 | serio_reconnect(serio); | |
317 | goto out; | |
1da177e4 | 318 | } |
f0d5c6f4 DT |
319 | /* |
320 | * Not a new device, try processing first byte normally | |
321 | */ | |
322 | psmouse->pktcnt = 1; | |
7d12e780 | 323 | if (psmouse_handle_byte(psmouse)) |
f0d5c6f4 | 324 | goto out; |
1da177e4 | 325 | |
f0d5c6f4 DT |
326 | psmouse->packet[psmouse->pktcnt++] = data; |
327 | } | |
1da177e4 | 328 | |
f0d5c6f4 DT |
329 | /* |
330 | * See if we need to force resync because mouse was idle for too long | |
331 | */ | |
332 | if (psmouse->state == PSMOUSE_ACTIVATED && | |
333 | psmouse->pktcnt == 1 && psmouse->resync_time && | |
334 | time_after(jiffies, psmouse->last + psmouse->resync_time * HZ)) { | |
335 | psmouse->badbyte = psmouse->packet[0]; | |
336 | __psmouse_set_state(psmouse, PSMOUSE_RESYNCING); | |
337 | queue_work(kpsmoused_wq, &psmouse->resync_work); | |
338 | goto out; | |
339 | } | |
1da177e4 | 340 | |
f0d5c6f4 | 341 | psmouse->last = jiffies; |
7d12e780 | 342 | psmouse_handle_byte(psmouse); |
1da177e4 | 343 | |
f0d5c6f4 | 344 | out: |
1da177e4 LT |
345 | return IRQ_HANDLED; |
346 | } | |
347 | ||
348 | ||
349 | /* | |
350 | * psmouse_sliced_command() sends an extended PS/2 command to the mouse | |
351 | * using sliced syntax, understood by advanced devices, such as Logitech | |
352 | * or Synaptics touchpads. The command is encoded as: | |
353 | * 0xE6 0xE8 rr 0xE8 ss 0xE8 tt 0xE8 uu where (rr*64)+(ss*16)+(tt*4)+uu | |
354 | * is the command. | |
355 | */ | |
356 | int psmouse_sliced_command(struct psmouse *psmouse, unsigned char command) | |
357 | { | |
358 | int i; | |
359 | ||
360 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11)) | |
361 | return -1; | |
362 | ||
363 | for (i = 6; i >= 0; i -= 2) { | |
364 | unsigned char d = (command >> i) & 3; | |
365 | if (ps2_command(&psmouse->ps2dev, &d, PSMOUSE_CMD_SETRES)) | |
366 | return -1; | |
367 | } | |
368 | ||
369 | return 0; | |
370 | } | |
371 | ||
372 | ||
373 | /* | |
374 | * psmouse_reset() resets the mouse into power-on state. | |
375 | */ | |
376 | int psmouse_reset(struct psmouse *psmouse) | |
377 | { | |
378 | unsigned char param[2]; | |
379 | ||
380 | if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_RESET_BAT)) | |
381 | return -1; | |
382 | ||
383 | if (param[0] != PSMOUSE_RET_BAT && param[1] != PSMOUSE_RET_ID) | |
384 | return -1; | |
385 | ||
386 | return 0; | |
387 | } | |
388 | ||
389 | ||
390 | /* | |
391 | * Genius NetMouse magic init. | |
392 | */ | |
393 | static int genius_detect(struct psmouse *psmouse, int set_properties) | |
394 | { | |
395 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
396 | unsigned char param[4]; | |
397 | ||
398 | param[0] = 3; | |
399 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); | |
400 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
401 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
402 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
403 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); | |
404 | ||
405 | if (param[0] != 0x00 || param[1] != 0x33 || param[2] != 0x55) | |
406 | return -1; | |
407 | ||
408 | if (set_properties) { | |
2e5b636b DT |
409 | set_bit(BTN_EXTRA, psmouse->dev->keybit); |
410 | set_bit(BTN_SIDE, psmouse->dev->keybit); | |
411 | set_bit(REL_WHEEL, psmouse->dev->relbit); | |
1da177e4 LT |
412 | |
413 | psmouse->vendor = "Genius"; | |
a3f3f317 | 414 | psmouse->name = "Mouse"; |
1da177e4 LT |
415 | psmouse->pktsize = 4; |
416 | } | |
417 | ||
418 | return 0; | |
419 | } | |
420 | ||
421 | /* | |
422 | * IntelliMouse magic init. | |
423 | */ | |
424 | static int intellimouse_detect(struct psmouse *psmouse, int set_properties) | |
425 | { | |
426 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
427 | unsigned char param[2]; | |
428 | ||
429 | param[0] = 200; | |
430 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
431 | param[0] = 100; | |
432 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
433 | param[0] = 80; | |
434 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
435 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); | |
436 | ||
437 | if (param[0] != 3) | |
438 | return -1; | |
439 | ||
440 | if (set_properties) { | |
2e5b636b DT |
441 | set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
442 | set_bit(REL_WHEEL, psmouse->dev->relbit); | |
1da177e4 LT |
443 | |
444 | if (!psmouse->vendor) psmouse->vendor = "Generic"; | |
445 | if (!psmouse->name) psmouse->name = "Wheel Mouse"; | |
446 | psmouse->pktsize = 4; | |
447 | } | |
448 | ||
449 | return 0; | |
450 | } | |
451 | ||
452 | /* | |
453 | * Try IntelliMouse/Explorer magic init. | |
454 | */ | |
455 | static int im_explorer_detect(struct psmouse *psmouse, int set_properties) | |
456 | { | |
457 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
458 | unsigned char param[2]; | |
459 | ||
460 | intellimouse_detect(psmouse, 0); | |
461 | ||
462 | param[0] = 200; | |
463 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
464 | param[0] = 200; | |
465 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
466 | param[0] = 80; | |
467 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
468 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); | |
469 | ||
470 | if (param[0] != 4) | |
471 | return -1; | |
472 | ||
b0c9ad8e PB |
473 | /* Magic to enable horizontal scrolling on IntelliMouse 4.0 */ |
474 | param[0] = 200; | |
475 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
476 | param[0] = 80; | |
477 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
478 | param[0] = 40; | |
479 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
480 | ||
1da177e4 | 481 | if (set_properties) { |
2e5b636b DT |
482 | set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
483 | set_bit(REL_WHEEL, psmouse->dev->relbit); | |
b0c9ad8e | 484 | set_bit(REL_HWHEEL, psmouse->dev->relbit); |
2e5b636b DT |
485 | set_bit(BTN_SIDE, psmouse->dev->keybit); |
486 | set_bit(BTN_EXTRA, psmouse->dev->keybit); | |
1da177e4 LT |
487 | |
488 | if (!psmouse->vendor) psmouse->vendor = "Generic"; | |
489 | if (!psmouse->name) psmouse->name = "Explorer Mouse"; | |
490 | psmouse->pktsize = 4; | |
491 | } | |
492 | ||
493 | return 0; | |
494 | } | |
495 | ||
496 | /* | |
497 | * Kensington ThinkingMouse / ExpertMouse magic init. | |
498 | */ | |
499 | static int thinking_detect(struct psmouse *psmouse, int set_properties) | |
500 | { | |
501 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
502 | unsigned char param[2]; | |
e38de678 | 503 | static const unsigned char seq[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20 }; |
1da177e4 LT |
504 | int i; |
505 | ||
506 | param[0] = 10; | |
507 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
508 | param[0] = 0; | |
509 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); | |
e38de678 HD |
510 | for (i = 0; i < ARRAY_SIZE(seq); i++) { |
511 | param[0] = seq[i]; | |
512 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
513 | } | |
1da177e4 LT |
514 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); |
515 | ||
516 | if (param[0] != 2) | |
517 | return -1; | |
518 | ||
519 | if (set_properties) { | |
2e5b636b | 520 | set_bit(BTN_EXTRA, psmouse->dev->keybit); |
1da177e4 LT |
521 | |
522 | psmouse->vendor = "Kensington"; | |
523 | psmouse->name = "ThinkingMouse"; | |
524 | } | |
525 | ||
526 | return 0; | |
527 | } | |
528 | ||
529 | /* | |
530 | * Bare PS/2 protocol "detection". Always succeeds. | |
531 | */ | |
532 | static int ps2bare_detect(struct psmouse *psmouse, int set_properties) | |
533 | { | |
dbf4ccd6 DT |
534 | if (set_properties) { |
535 | if (!psmouse->vendor) psmouse->vendor = "Generic"; | |
536 | if (!psmouse->name) psmouse->name = "Mouse"; | |
537 | } | |
1da177e4 LT |
538 | |
539 | return 0; | |
540 | } | |
541 | ||
dbf4ccd6 | 542 | |
1da177e4 LT |
543 | /* |
544 | * psmouse_extensions() probes for any extensions to the basic PS/2 protocol | |
545 | * the mouse may have. | |
546 | */ | |
547 | ||
548 | static int psmouse_extensions(struct psmouse *psmouse, | |
549 | unsigned int max_proto, int set_properties) | |
550 | { | |
551 | int synaptics_hardware = 0; | |
552 | ||
a15d60f8 DT |
553 | /* |
554 | * We always check for lifebook because it does not disturb mouse | |
555 | * (it only checks DMI information). | |
556 | */ | |
dbf4ccd6 | 557 | if (lifebook_detect(psmouse, set_properties) == 0) { |
a15d60f8 DT |
558 | if (max_proto > PSMOUSE_IMEX) { |
559 | if (!set_properties || lifebook_init(psmouse) == 0) | |
560 | return PSMOUSE_LIFEBOOK; | |
561 | } | |
562 | } | |
02d7f589 | 563 | |
1da177e4 LT |
564 | /* |
565 | * Try Kensington ThinkingMouse (we try first, because synaptics probe | |
566 | * upsets the thinkingmouse). | |
567 | */ | |
568 | ||
569 | if (max_proto > PSMOUSE_IMEX && thinking_detect(psmouse, set_properties) == 0) | |
570 | return PSMOUSE_THINKPS; | |
571 | ||
572 | /* | |
573 | * Try Synaptics TouchPad | |
574 | */ | |
575 | if (max_proto > PSMOUSE_PS2 && synaptics_detect(psmouse, set_properties) == 0) { | |
576 | synaptics_hardware = 1; | |
577 | ||
578 | if (max_proto > PSMOUSE_IMEX) { | |
579 | if (!set_properties || synaptics_init(psmouse) == 0) | |
580 | return PSMOUSE_SYNAPTICS; | |
581 | /* | |
582 | * Some Synaptics touchpads can emulate extended protocols (like IMPS/2). | |
583 | * Unfortunately Logitech/Genius probes confuse some firmware versions so | |
584 | * we'll have to skip them. | |
585 | */ | |
586 | max_proto = PSMOUSE_IMEX; | |
587 | } | |
588 | /* | |
589 | * Make sure that touchpad is in relative mode, gestures (taps) are enabled | |
590 | */ | |
591 | synaptics_reset(psmouse); | |
592 | } | |
593 | ||
594 | /* | |
595 | * Try ALPS TouchPad | |
596 | */ | |
597 | if (max_proto > PSMOUSE_IMEX) { | |
598 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); | |
599 | if (alps_detect(psmouse, set_properties) == 0) { | |
600 | if (!set_properties || alps_init(psmouse) == 0) | |
601 | return PSMOUSE_ALPS; | |
602 | /* | |
603 | * Init failed, try basic relative protocols | |
604 | */ | |
605 | max_proto = PSMOUSE_IMEX; | |
606 | } | |
607 | } | |
608 | ||
24bf10ab SL |
609 | if (max_proto > PSMOUSE_IMEX) { |
610 | ||
611 | if (genius_detect(psmouse, set_properties) == 0) | |
612 | return PSMOUSE_GENPS; | |
613 | ||
614 | if (ps2pp_init(psmouse, set_properties) == 0) | |
615 | return PSMOUSE_PS2PP; | |
1da177e4 | 616 | |
24bf10ab SL |
617 | if (trackpoint_detect(psmouse, set_properties) == 0) |
618 | return PSMOUSE_TRACKPOINT; | |
1da177e4 | 619 | |
24bf10ab SL |
620 | if (touchkit_ps2_detect(psmouse, set_properties) == 0) |
621 | return PSMOUSE_TOUCHKIT_PS2; | |
622 | } | |
ba44995a | 623 | |
1da177e4 LT |
624 | /* |
625 | * Reset to defaults in case the device got confused by extended | |
ba44995a DT |
626 | * protocol probes. Note that we do full reset becuase some mice |
627 | * put themselves to sleep when see PSMOUSE_RESET_DIS. | |
1da177e4 | 628 | */ |
ba44995a | 629 | psmouse_reset(psmouse); |
1da177e4 LT |
630 | |
631 | if (max_proto >= PSMOUSE_IMEX && im_explorer_detect(psmouse, set_properties) == 0) | |
632 | return PSMOUSE_IMEX; | |
633 | ||
634 | if (max_proto >= PSMOUSE_IMPS && intellimouse_detect(psmouse, set_properties) == 0) | |
635 | return PSMOUSE_IMPS; | |
636 | ||
637 | /* | |
638 | * Okay, all failed, we have a standard mouse here. The number of the buttons | |
639 | * is still a question, though. We assume 3. | |
640 | */ | |
641 | ps2bare_detect(psmouse, set_properties); | |
642 | ||
643 | if (synaptics_hardware) { | |
644 | /* | |
645 | * We detected Synaptics hardware but it did not respond to IMPS/2 probes. | |
646 | * We need to reset the touchpad because if there is a track point on the | |
647 | * pass through port it could get disabled while probing for protocol | |
648 | * extensions. | |
649 | */ | |
650 | psmouse_reset(psmouse); | |
1da177e4 LT |
651 | } |
652 | ||
653 | return PSMOUSE_PS2; | |
654 | } | |
655 | ||
e38de678 | 656 | static const struct psmouse_protocol psmouse_protocols[] = { |
dbf4ccd6 DT |
657 | { |
658 | .type = PSMOUSE_PS2, | |
659 | .name = "PS/2", | |
660 | .alias = "bare", | |
661 | .maxproto = 1, | |
662 | .detect = ps2bare_detect, | |
663 | }, | |
664 | { | |
665 | .type = PSMOUSE_PS2PP, | |
666 | .name = "PS2++", | |
667 | .alias = "logitech", | |
668 | .detect = ps2pp_init, | |
669 | }, | |
670 | { | |
671 | .type = PSMOUSE_THINKPS, | |
672 | .name = "ThinkPS/2", | |
673 | .alias = "thinkps", | |
674 | .detect = thinking_detect, | |
675 | }, | |
676 | { | |
677 | .type = PSMOUSE_GENPS, | |
678 | .name = "GenPS/2", | |
679 | .alias = "genius", | |
680 | .detect = genius_detect, | |
681 | }, | |
682 | { | |
683 | .type = PSMOUSE_IMPS, | |
684 | .name = "ImPS/2", | |
685 | .alias = "imps", | |
686 | .maxproto = 1, | |
687 | .detect = intellimouse_detect, | |
688 | }, | |
689 | { | |
690 | .type = PSMOUSE_IMEX, | |
691 | .name = "ImExPS/2", | |
692 | .alias = "exps", | |
693 | .maxproto = 1, | |
694 | .detect = im_explorer_detect, | |
695 | }, | |
696 | { | |
697 | .type = PSMOUSE_SYNAPTICS, | |
698 | .name = "SynPS/2", | |
699 | .alias = "synaptics", | |
700 | .detect = synaptics_detect, | |
701 | .init = synaptics_init, | |
702 | }, | |
703 | { | |
704 | .type = PSMOUSE_ALPS, | |
705 | .name = "AlpsPS/2", | |
706 | .alias = "alps", | |
707 | .detect = alps_detect, | |
708 | .init = alps_init, | |
709 | }, | |
710 | { | |
711 | .type = PSMOUSE_LIFEBOOK, | |
712 | .name = "LBPS/2", | |
713 | .alias = "lifebook", | |
714 | .init = lifebook_init, | |
715 | }, | |
541e316a SE |
716 | { |
717 | .type = PSMOUSE_TRACKPOINT, | |
718 | .name = "TPPS/2", | |
719 | .alias = "trackpoint", | |
720 | .detect = trackpoint_detect, | |
721 | }, | |
24bf10ab SL |
722 | { |
723 | .type = PSMOUSE_TOUCHKIT_PS2, | |
724 | .name = "touchkitPS/2", | |
725 | .alias = "touchkit", | |
726 | .detect = touchkit_ps2_detect, | |
727 | }, | |
dbf4ccd6 DT |
728 | { |
729 | .type = PSMOUSE_AUTO, | |
730 | .name = "auto", | |
731 | .alias = "any", | |
732 | .maxproto = 1, | |
733 | }, | |
734 | }; | |
735 | ||
e38de678 | 736 | static const struct psmouse_protocol *psmouse_protocol_by_type(enum psmouse_type type) |
dbf4ccd6 DT |
737 | { |
738 | int i; | |
739 | ||
740 | for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++) | |
741 | if (psmouse_protocols[i].type == type) | |
742 | return &psmouse_protocols[i]; | |
743 | ||
744 | WARN_ON(1); | |
745 | return &psmouse_protocols[0]; | |
746 | } | |
747 | ||
e38de678 | 748 | static const struct psmouse_protocol *psmouse_protocol_by_name(const char *name, size_t len) |
dbf4ccd6 | 749 | { |
e38de678 | 750 | const struct psmouse_protocol *p; |
dbf4ccd6 DT |
751 | int i; |
752 | ||
753 | for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++) { | |
754 | p = &psmouse_protocols[i]; | |
755 | ||
756 | if ((strlen(p->name) == len && !strncmp(p->name, name, len)) || | |
757 | (strlen(p->alias) == len && !strncmp(p->alias, name, len))) | |
758 | return &psmouse_protocols[i]; | |
759 | } | |
760 | ||
761 | return NULL; | |
762 | } | |
763 | ||
764 | ||
1da177e4 LT |
765 | /* |
766 | * psmouse_probe() probes for a PS/2 mouse. | |
767 | */ | |
768 | ||
769 | static int psmouse_probe(struct psmouse *psmouse) | |
770 | { | |
771 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
772 | unsigned char param[2]; | |
773 | ||
774 | /* | |
775 | * First, we check if it's a mouse. It should send 0x00 or 0x03 | |
776 | * in case of an IntelliMouse in 4-byte mode or 0x04 for IM Explorer. | |
7741e931 VP |
777 | * Sunrex K8561 IR Keyboard/Mouse reports 0xff on second and subsequent |
778 | * ID queries, probably due to a firmware bug. | |
1da177e4 LT |
779 | */ |
780 | ||
781 | param[0] = 0xa5; | |
782 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) | |
783 | return -1; | |
784 | ||
7741e931 VP |
785 | if (param[0] != 0x00 && param[0] != 0x03 && |
786 | param[0] != 0x04 && param[0] != 0xff) | |
1da177e4 LT |
787 | return -1; |
788 | ||
789 | /* | |
790 | * Then we reset and disable the mouse so that it doesn't generate events. | |
791 | */ | |
792 | ||
793 | if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_DIS)) | |
794 | printk(KERN_WARNING "psmouse.c: Failed to reset mouse on %s\n", ps2dev->serio->phys); | |
795 | ||
796 | return 0; | |
797 | } | |
798 | ||
799 | /* | |
800 | * Here we set the mouse resolution. | |
801 | */ | |
802 | ||
803 | void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution) | |
804 | { | |
e38de678 HD |
805 | static const unsigned char params[] = { 0, 1, 2, 2, 3 }; |
806 | unsigned char p; | |
1da177e4 LT |
807 | |
808 | if (resolution == 0 || resolution > 200) | |
809 | resolution = 200; | |
810 | ||
e38de678 HD |
811 | p = params[resolution / 50]; |
812 | ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES); | |
813 | psmouse->resolution = 25 << p; | |
1da177e4 LT |
814 | } |
815 | ||
816 | /* | |
817 | * Here we set the mouse report rate. | |
818 | */ | |
819 | ||
820 | static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate) | |
821 | { | |
e38de678 HD |
822 | static const unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 }; |
823 | unsigned char r; | |
1da177e4 LT |
824 | int i = 0; |
825 | ||
826 | while (rates[i] > rate) i++; | |
e38de678 HD |
827 | r = rates[i]; |
828 | ps2_command(&psmouse->ps2dev, &r, PSMOUSE_CMD_SETRATE); | |
829 | psmouse->rate = r; | |
1da177e4 LT |
830 | } |
831 | ||
832 | /* | |
833 | * psmouse_initialize() initializes the mouse to a sane state. | |
834 | */ | |
835 | ||
836 | static void psmouse_initialize(struct psmouse *psmouse) | |
837 | { | |
1da177e4 LT |
838 | /* |
839 | * We set the mouse report rate, resolution and scaling. | |
840 | */ | |
841 | ||
842 | if (psmouse_max_proto != PSMOUSE_PS2) { | |
843 | psmouse->set_rate(psmouse, psmouse->rate); | |
844 | psmouse->set_resolution(psmouse, psmouse->resolution); | |
845 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
846 | } | |
847 | } | |
848 | ||
1da177e4 LT |
849 | /* |
850 | * psmouse_activate() enables the mouse so that we get motion reports from it. | |
851 | */ | |
852 | ||
853 | static void psmouse_activate(struct psmouse *psmouse) | |
854 | { | |
855 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE)) | |
856 | printk(KERN_WARNING "psmouse.c: Failed to enable mouse on %s\n", | |
857 | psmouse->ps2dev.serio->phys); | |
858 | ||
859 | psmouse_set_state(psmouse, PSMOUSE_ACTIVATED); | |
860 | } | |
861 | ||
862 | ||
863 | /* | |
864 | * psmouse_deactivate() puts the mouse into poll mode so that we don't get motion | |
865 | * reports from it unless we explicitely request it. | |
866 | */ | |
867 | ||
868 | static void psmouse_deactivate(struct psmouse *psmouse) | |
869 | { | |
870 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE)) | |
871 | printk(KERN_WARNING "psmouse.c: Failed to deactivate mouse on %s\n", | |
872 | psmouse->ps2dev.serio->phys); | |
873 | ||
874 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
875 | } | |
876 | ||
f0d5c6f4 DT |
877 | /* |
878 | * psmouse_poll() - default poll hanlder. Everyone except for ALPS uses it. | |
879 | */ | |
880 | ||
881 | static int psmouse_poll(struct psmouse *psmouse) | |
882 | { | |
883 | return ps2_command(&psmouse->ps2dev, psmouse->packet, | |
884 | PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)); | |
885 | } | |
886 | ||
887 | ||
888 | /* | |
889 | * psmouse_resync() attempts to re-validate current protocol. | |
890 | */ | |
891 | ||
c4028958 | 892 | static void psmouse_resync(struct work_struct *work) |
f0d5c6f4 | 893 | { |
c4028958 DH |
894 | struct psmouse *parent = NULL, *psmouse = |
895 | container_of(work, struct psmouse, resync_work); | |
f0d5c6f4 DT |
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++; | |
7d12e780 | 943 | rc = psmouse->protocol_handler(psmouse); |
f0d5c6f4 DT |
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); | |
a1cec061 DT |
991 | struct psmouse *parent = NULL; |
992 | ||
993 | mutex_lock(&psmouse_mutex); | |
994 | ||
995 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
996 | parent = serio_get_drvdata(serio->parent); | |
997 | psmouse_deactivate(parent); | |
998 | } | |
999 | ||
1000 | psmouse_deactivate(psmouse); | |
1001 | ||
1002 | if (psmouse->cleanup) | |
1003 | psmouse->cleanup(psmouse); | |
1da177e4 LT |
1004 | |
1005 | psmouse_reset(psmouse); | |
a1cec061 DT |
1006 | |
1007 | /* | |
1008 | * Some boxes, such as HP nx7400, get terribly confused if mouse | |
1009 | * is not fully enabled before suspending/shutting down. | |
1010 | */ | |
1011 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE); | |
1012 | ||
1013 | if (parent) { | |
1014 | if (parent->pt_deactivate) | |
1015 | parent->pt_deactivate(parent); | |
1016 | ||
1017 | psmouse_activate(parent); | |
1018 | } | |
1019 | ||
1020 | mutex_unlock(&psmouse_mutex); | |
1da177e4 LT |
1021 | } |
1022 | ||
1023 | /* | |
1024 | * psmouse_disconnect() closes and frees. | |
1025 | */ | |
1026 | ||
1027 | static void psmouse_disconnect(struct serio *serio) | |
1028 | { | |
04df1925 DT |
1029 | struct psmouse *psmouse, *parent = NULL; |
1030 | ||
1031 | psmouse = serio_get_drvdata(serio); | |
1da177e4 | 1032 | |
cfe9e888 | 1033 | sysfs_remove_group(&serio->dev.kobj, &psmouse_attribute_group); |
1da177e4 | 1034 | |
c14471dc | 1035 | mutex_lock(&psmouse_mutex); |
04df1925 | 1036 | |
1da177e4 LT |
1037 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); |
1038 | ||
f0d5c6f4 | 1039 | /* make sure we don't have a resync in progress */ |
c14471dc | 1040 | mutex_unlock(&psmouse_mutex); |
f0d5c6f4 | 1041 | flush_workqueue(kpsmoused_wq); |
c14471dc | 1042 | mutex_lock(&psmouse_mutex); |
f0d5c6f4 | 1043 | |
1da177e4 LT |
1044 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { |
1045 | parent = serio_get_drvdata(serio->parent); | |
04df1925 | 1046 | psmouse_deactivate(parent); |
1da177e4 LT |
1047 | } |
1048 | ||
1049 | if (psmouse->disconnect) | |
1050 | psmouse->disconnect(psmouse); | |
1051 | ||
04df1925 DT |
1052 | if (parent && parent->pt_deactivate) |
1053 | parent->pt_deactivate(parent); | |
1054 | ||
1da177e4 LT |
1055 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); |
1056 | ||
1da177e4 LT |
1057 | serio_close(serio); |
1058 | serio_set_drvdata(serio, NULL); | |
2e5b636b | 1059 | input_unregister_device(psmouse->dev); |
1da177e4 | 1060 | kfree(psmouse); |
04df1925 DT |
1061 | |
1062 | if (parent) | |
1063 | psmouse_activate(parent); | |
1064 | ||
c14471dc | 1065 | mutex_unlock(&psmouse_mutex); |
1da177e4 LT |
1066 | } |
1067 | ||
e38de678 | 1068 | static int psmouse_switch_protocol(struct psmouse *psmouse, const struct psmouse_protocol *proto) |
dbf4ccd6 | 1069 | { |
2e5b636b | 1070 | struct input_dev *input_dev = psmouse->dev; |
dbf4ccd6 | 1071 | |
2e5b636b DT |
1072 | input_dev->private = psmouse; |
1073 | input_dev->cdev.dev = &psmouse->ps2dev.serio->dev; | |
dbf4ccd6 | 1074 | |
2e5b636b DT |
1075 | input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL); |
1076 | input_dev->keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT); | |
1077 | input_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y); | |
dbf4ccd6 DT |
1078 | |
1079 | psmouse->set_rate = psmouse_set_rate; | |
1080 | psmouse->set_resolution = psmouse_set_resolution; | |
f0d5c6f4 | 1081 | psmouse->poll = psmouse_poll; |
dbf4ccd6 DT |
1082 | psmouse->protocol_handler = psmouse_process_byte; |
1083 | psmouse->pktsize = 3; | |
1084 | ||
1085 | if (proto && (proto->detect || proto->init)) { | |
1086 | if (proto->detect && proto->detect(psmouse, 1) < 0) | |
1087 | return -1; | |
1088 | ||
1089 | if (proto->init && proto->init(psmouse) < 0) | |
1090 | return -1; | |
1091 | ||
1092 | psmouse->type = proto->type; | |
1093 | } | |
1094 | else | |
1095 | psmouse->type = psmouse_extensions(psmouse, psmouse_max_proto, 1); | |
1096 | ||
f0d5c6f4 DT |
1097 | /* |
1098 | * If mouse's packet size is 3 there is no point in polling the | |
1099 | * device in hopes to detect protocol reset - we won't get less | |
1100 | * than 3 bytes response anyhow. | |
1101 | */ | |
1102 | if (psmouse->pktsize == 3) | |
1103 | psmouse->resync_time = 0; | |
1104 | ||
1105 | /* | |
1106 | * Some smart KVMs fake response to POLL command returning just | |
1107 | * 3 bytes and messing up our resync logic, so if initial poll | |
1108 | * fails we won't try polling the device anymore. Hopefully | |
1109 | * such KVM will maintain initially selected protocol. | |
1110 | */ | |
1111 | if (psmouse->resync_time && psmouse->poll(psmouse)) | |
1112 | psmouse->resync_time = 0; | |
1113 | ||
08ffce45 DT |
1114 | snprintf(psmouse->devname, sizeof(psmouse->devname), "%s %s %s", |
1115 | psmouse_protocol_by_type(psmouse->type)->name, psmouse->vendor, psmouse->name); | |
dbf4ccd6 | 1116 | |
2e5b636b DT |
1117 | input_dev->name = psmouse->devname; |
1118 | input_dev->phys = psmouse->phys; | |
1119 | input_dev->id.bustype = BUS_I8042; | |
1120 | input_dev->id.vendor = 0x0002; | |
1121 | input_dev->id.product = psmouse->type; | |
1122 | input_dev->id.version = psmouse->model; | |
dbf4ccd6 DT |
1123 | |
1124 | return 0; | |
1125 | } | |
1126 | ||
1da177e4 LT |
1127 | /* |
1128 | * psmouse_connect() is a callback from the serio module when | |
1129 | * an unhandled serio port is found. | |
1130 | */ | |
1131 | static int psmouse_connect(struct serio *serio, struct serio_driver *drv) | |
1132 | { | |
1133 | struct psmouse *psmouse, *parent = NULL; | |
2e5b636b | 1134 | struct input_dev *input_dev; |
72155615 | 1135 | int retval = 0, error = -ENOMEM; |
1da177e4 | 1136 | |
c14471dc | 1137 | mutex_lock(&psmouse_mutex); |
04df1925 | 1138 | |
1da177e4 LT |
1139 | /* |
1140 | * If this is a pass-through port deactivate parent so the device | |
1141 | * connected to this port can be successfully identified | |
1142 | */ | |
1143 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1144 | parent = serio_get_drvdata(serio->parent); | |
1145 | psmouse_deactivate(parent); | |
1146 | } | |
1147 | ||
2e5b636b DT |
1148 | psmouse = kzalloc(sizeof(struct psmouse), GFP_KERNEL); |
1149 | input_dev = input_allocate_device(); | |
1150 | if (!psmouse || !input_dev) | |
72155615 | 1151 | goto err_free; |
1da177e4 | 1152 | |
1da177e4 | 1153 | ps2_init(&psmouse->ps2dev, serio); |
c4028958 | 1154 | INIT_WORK(&psmouse->resync_work, psmouse_resync); |
2e5b636b | 1155 | psmouse->dev = input_dev; |
08ffce45 | 1156 | snprintf(psmouse->phys, sizeof(psmouse->phys), "%s/input0", serio->phys); |
dbf4ccd6 | 1157 | |
1da177e4 LT |
1158 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); |
1159 | ||
1160 | serio_set_drvdata(serio, psmouse); | |
1161 | ||
72155615 DT |
1162 | error = serio_open(serio, drv); |
1163 | if (error) | |
1164 | goto err_clear_drvdata; | |
1da177e4 LT |
1165 | |
1166 | if (psmouse_probe(psmouse) < 0) { | |
72155615 DT |
1167 | error = -ENODEV; |
1168 | goto err_close_serio; | |
1da177e4 LT |
1169 | } |
1170 | ||
1171 | psmouse->rate = psmouse_rate; | |
1172 | psmouse->resolution = psmouse_resolution; | |
1173 | psmouse->resetafter = psmouse_resetafter; | |
f0d5c6f4 | 1174 | psmouse->resync_time = parent ? 0 : psmouse_resync_time; |
1da177e4 | 1175 | psmouse->smartscroll = psmouse_smartscroll; |
1da177e4 | 1176 | |
dbf4ccd6 | 1177 | psmouse_switch_protocol(psmouse, NULL); |
1da177e4 | 1178 | |
1da177e4 | 1179 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); |
1da177e4 LT |
1180 | psmouse_initialize(psmouse); |
1181 | ||
72155615 DT |
1182 | error = input_register_device(psmouse->dev); |
1183 | if (error) | |
1184 | goto err_protocol_disconnect; | |
2e5b636b | 1185 | |
1da177e4 LT |
1186 | if (parent && parent->pt_activate) |
1187 | parent->pt_activate(parent); | |
1188 | ||
72155615 DT |
1189 | error = sysfs_create_group(&serio->dev.kobj, &psmouse_attribute_group); |
1190 | if (error) | |
1191 | goto err_pt_deactivate; | |
1da177e4 LT |
1192 | |
1193 | psmouse_activate(psmouse); | |
1194 | ||
72155615 | 1195 | out: |
04df1925 | 1196 | /* If this is a pass-through port the parent needs to be re-activated */ |
1da177e4 LT |
1197 | if (parent) |
1198 | psmouse_activate(parent); | |
1199 | ||
c14471dc | 1200 | mutex_unlock(&psmouse_mutex); |
1da177e4 | 1201 | return retval; |
72155615 DT |
1202 | |
1203 | err_pt_deactivate: | |
1204 | if (parent && parent->pt_deactivate) | |
1205 | parent->pt_deactivate(parent); | |
1206 | err_protocol_disconnect: | |
1207 | if (psmouse->disconnect) | |
1208 | psmouse->disconnect(psmouse); | |
1209 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
1210 | err_close_serio: | |
1211 | serio_close(serio); | |
1212 | err_clear_drvdata: | |
1213 | serio_set_drvdata(serio, NULL); | |
1214 | err_free: | |
1215 | input_free_device(input_dev); | |
1216 | kfree(psmouse); | |
1217 | ||
1218 | retval = error; | |
1219 | goto out; | |
1da177e4 LT |
1220 | } |
1221 | ||
1222 | ||
1223 | static int psmouse_reconnect(struct serio *serio) | |
1224 | { | |
1225 | struct psmouse *psmouse = serio_get_drvdata(serio); | |
1226 | struct psmouse *parent = NULL; | |
1227 | struct serio_driver *drv = serio->drv; | |
1228 | int rc = -1; | |
1229 | ||
1230 | if (!drv || !psmouse) { | |
1231 | printk(KERN_DEBUG "psmouse: reconnect request, but serio is disconnected, ignoring...\n"); | |
1232 | return -1; | |
1233 | } | |
1234 | ||
c14471dc | 1235 | mutex_lock(&psmouse_mutex); |
04df1925 | 1236 | |
1da177e4 LT |
1237 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { |
1238 | parent = serio_get_drvdata(serio->parent); | |
1239 | psmouse_deactivate(parent); | |
1240 | } | |
1241 | ||
1242 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); | |
1243 | ||
1244 | if (psmouse->reconnect) { | |
1245 | if (psmouse->reconnect(psmouse)) | |
1246 | goto out; | |
1247 | } else if (psmouse_probe(psmouse) < 0 || | |
1248 | psmouse->type != psmouse_extensions(psmouse, psmouse_max_proto, 0)) | |
1249 | goto out; | |
1250 | ||
1251 | /* ok, the device type (and capabilities) match the old one, | |
1252 | * we can continue using it, complete intialization | |
1253 | */ | |
1254 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
1255 | ||
1256 | psmouse_initialize(psmouse); | |
1257 | ||
1258 | if (parent && parent->pt_activate) | |
1259 | parent->pt_activate(parent); | |
1260 | ||
1261 | psmouse_activate(psmouse); | |
1262 | rc = 0; | |
1263 | ||
1264 | out: | |
1265 | /* If this is a pass-through port the parent waits to be activated */ | |
1266 | if (parent) | |
1267 | psmouse_activate(parent); | |
1268 | ||
c14471dc | 1269 | mutex_unlock(&psmouse_mutex); |
1da177e4 LT |
1270 | return rc; |
1271 | } | |
1272 | ||
1273 | static struct serio_device_id psmouse_serio_ids[] = { | |
1274 | { | |
1275 | .type = SERIO_8042, | |
1276 | .proto = SERIO_ANY, | |
1277 | .id = SERIO_ANY, | |
1278 | .extra = SERIO_ANY, | |
1279 | }, | |
1280 | { | |
1281 | .type = SERIO_PS_PSTHRU, | |
1282 | .proto = SERIO_ANY, | |
1283 | .id = SERIO_ANY, | |
1284 | .extra = SERIO_ANY, | |
1285 | }, | |
1286 | { 0 } | |
1287 | }; | |
1288 | ||
1289 | MODULE_DEVICE_TABLE(serio, psmouse_serio_ids); | |
1290 | ||
1291 | static struct serio_driver psmouse_drv = { | |
1292 | .driver = { | |
1293 | .name = "psmouse", | |
1294 | }, | |
1295 | .description = DRIVER_DESC, | |
1296 | .id_table = psmouse_serio_ids, | |
1297 | .interrupt = psmouse_interrupt, | |
1298 | .connect = psmouse_connect, | |
1299 | .reconnect = psmouse_reconnect, | |
1300 | .disconnect = psmouse_disconnect, | |
1301 | .cleanup = psmouse_cleanup, | |
1302 | }; | |
1303 | ||
cfe9e888 DT |
1304 | ssize_t psmouse_attr_show_helper(struct device *dev, struct device_attribute *devattr, |
1305 | char *buf) | |
1da177e4 LT |
1306 | { |
1307 | struct serio *serio = to_serio_port(dev); | |
cfe9e888 DT |
1308 | struct psmouse_attribute *attr = to_psmouse_attr(devattr); |
1309 | struct psmouse *psmouse; | |
1da177e4 LT |
1310 | int retval; |
1311 | ||
1312 | retval = serio_pin_driver(serio); | |
1313 | if (retval) | |
1314 | return retval; | |
1315 | ||
1316 | if (serio->drv != &psmouse_drv) { | |
1317 | retval = -ENODEV; | |
1318 | goto out; | |
1319 | } | |
1320 | ||
cfe9e888 DT |
1321 | psmouse = serio_get_drvdata(serio); |
1322 | ||
1323 | retval = attr->show(psmouse, attr->data, buf); | |
1da177e4 LT |
1324 | |
1325 | out: | |
1326 | serio_unpin_driver(serio); | |
1327 | return retval; | |
1328 | } | |
1329 | ||
cfe9e888 DT |
1330 | ssize_t psmouse_attr_set_helper(struct device *dev, struct device_attribute *devattr, |
1331 | const char *buf, size_t count) | |
1da177e4 LT |
1332 | { |
1333 | struct serio *serio = to_serio_port(dev); | |
cfe9e888 DT |
1334 | struct psmouse_attribute *attr = to_psmouse_attr(devattr); |
1335 | struct psmouse *psmouse, *parent = NULL; | |
1da177e4 LT |
1336 | int retval; |
1337 | ||
1338 | retval = serio_pin_driver(serio); | |
1339 | if (retval) | |
1340 | return retval; | |
1341 | ||
1342 | if (serio->drv != &psmouse_drv) { | |
1343 | retval = -ENODEV; | |
04df1925 DT |
1344 | goto out_unpin; |
1345 | } | |
1346 | ||
c14471dc | 1347 | retval = mutex_lock_interruptible(&psmouse_mutex); |
04df1925 DT |
1348 | if (retval) |
1349 | goto out_unpin; | |
1350 | ||
cfe9e888 DT |
1351 | psmouse = serio_get_drvdata(serio); |
1352 | ||
04df1925 DT |
1353 | if (psmouse->state == PSMOUSE_IGNORE) { |
1354 | retval = -ENODEV; | |
c14471dc | 1355 | goto out_unlock; |
1da177e4 LT |
1356 | } |
1357 | ||
1358 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1359 | parent = serio_get_drvdata(serio->parent); | |
1360 | psmouse_deactivate(parent); | |
1361 | } | |
dbf4ccd6 | 1362 | |
1da177e4 LT |
1363 | psmouse_deactivate(psmouse); |
1364 | ||
cfe9e888 | 1365 | retval = attr->set(psmouse, attr->data, buf, count); |
1da177e4 | 1366 | |
dbf4ccd6 DT |
1367 | if (retval != -ENODEV) |
1368 | psmouse_activate(psmouse); | |
1369 | ||
1da177e4 LT |
1370 | if (parent) |
1371 | psmouse_activate(parent); | |
1372 | ||
c14471dc IM |
1373 | out_unlock: |
1374 | mutex_unlock(&psmouse_mutex); | |
04df1925 | 1375 | out_unpin: |
1da177e4 LT |
1376 | serio_unpin_driver(serio); |
1377 | return retval; | |
1378 | } | |
1379 | ||
cfe9e888 DT |
1380 | static ssize_t psmouse_show_int_attr(struct psmouse *psmouse, void *offset, char *buf) |
1381 | { | |
eb5d5829 | 1382 | unsigned int *field = (unsigned int *)((char *)psmouse + (size_t)offset); |
cfe9e888 | 1383 | |
eb5d5829 | 1384 | return sprintf(buf, "%u\n", *field); |
cfe9e888 DT |
1385 | } |
1386 | ||
1387 | static ssize_t psmouse_set_int_attr(struct psmouse *psmouse, void *offset, const char *buf, size_t count) | |
1388 | { | |
eb5d5829 | 1389 | unsigned int *field = (unsigned int *)((char *)psmouse + (size_t)offset); |
cfe9e888 DT |
1390 | unsigned long value; |
1391 | char *rest; | |
1392 | ||
1393 | value = simple_strtoul(buf, &rest, 10); | |
1394 | if (*rest) | |
1395 | return -EINVAL; | |
1396 | ||
eb5d5829 SV |
1397 | if ((unsigned int)value != value) |
1398 | return -EINVAL; | |
1399 | ||
cfe9e888 DT |
1400 | *field = value; |
1401 | ||
1402 | return count; | |
1403 | } | |
1404 | ||
1405 | static ssize_t psmouse_attr_show_protocol(struct psmouse *psmouse, void *data, char *buf) | |
dbf4ccd6 DT |
1406 | { |
1407 | return sprintf(buf, "%s\n", psmouse_protocol_by_type(psmouse->type)->name); | |
1408 | } | |
1409 | ||
cfe9e888 | 1410 | static ssize_t psmouse_attr_set_protocol(struct psmouse *psmouse, void *data, const char *buf, size_t count) |
dbf4ccd6 DT |
1411 | { |
1412 | struct serio *serio = psmouse->ps2dev.serio; | |
1413 | struct psmouse *parent = NULL; | |
72155615 DT |
1414 | struct input_dev *old_dev, *new_dev; |
1415 | const struct psmouse_protocol *proto, *old_proto; | |
1416 | int error; | |
dbf4ccd6 DT |
1417 | int retry = 0; |
1418 | ||
72155615 DT |
1419 | proto = psmouse_protocol_by_name(buf, count); |
1420 | if (!proto) | |
dbf4ccd6 DT |
1421 | return -EINVAL; |
1422 | ||
1423 | if (psmouse->type == proto->type) | |
1424 | return count; | |
1425 | ||
72155615 DT |
1426 | new_dev = input_allocate_device(); |
1427 | if (!new_dev) | |
2e5b636b DT |
1428 | return -ENOMEM; |
1429 | ||
dbf4ccd6 DT |
1430 | while (serio->child) { |
1431 | if (++retry > 3) { | |
1432 | printk(KERN_WARNING "psmouse: failed to destroy child port, protocol change aborted.\n"); | |
2e5b636b | 1433 | input_free_device(new_dev); |
dbf4ccd6 DT |
1434 | return -EIO; |
1435 | } | |
1436 | ||
c14471dc | 1437 | mutex_unlock(&psmouse_mutex); |
dbf4ccd6 DT |
1438 | serio_unpin_driver(serio); |
1439 | serio_unregister_child_port(serio); | |
1440 | serio_pin_driver_uninterruptible(serio); | |
c14471dc | 1441 | mutex_lock(&psmouse_mutex); |
dbf4ccd6 | 1442 | |
2e5b636b DT |
1443 | if (serio->drv != &psmouse_drv) { |
1444 | input_free_device(new_dev); | |
dbf4ccd6 | 1445 | return -ENODEV; |
2e5b636b | 1446 | } |
dbf4ccd6 | 1447 | |
2e5b636b DT |
1448 | if (psmouse->type == proto->type) { |
1449 | input_free_device(new_dev); | |
dbf4ccd6 | 1450 | return count; /* switched by other thread */ |
2e5b636b | 1451 | } |
dbf4ccd6 DT |
1452 | } |
1453 | ||
1454 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1455 | parent = serio_get_drvdata(serio->parent); | |
1456 | if (parent->pt_deactivate) | |
1457 | parent->pt_deactivate(parent); | |
1458 | } | |
1459 | ||
72155615 DT |
1460 | old_dev = psmouse->dev; |
1461 | old_proto = psmouse_protocol_by_type(psmouse->type); | |
1462 | ||
dbf4ccd6 DT |
1463 | if (psmouse->disconnect) |
1464 | psmouse->disconnect(psmouse); | |
1465 | ||
1466 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
dbf4ccd6 | 1467 | |
2e5b636b | 1468 | psmouse->dev = new_dev; |
dbf4ccd6 DT |
1469 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); |
1470 | ||
1471 | if (psmouse_switch_protocol(psmouse, proto) < 0) { | |
1472 | psmouse_reset(psmouse); | |
1473 | /* default to PSMOUSE_PS2 */ | |
1474 | psmouse_switch_protocol(psmouse, &psmouse_protocols[0]); | |
1475 | } | |
1476 | ||
1477 | psmouse_initialize(psmouse); | |
1478 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
1479 | ||
72155615 DT |
1480 | error = input_register_device(psmouse->dev); |
1481 | if (error) { | |
1482 | if (psmouse->disconnect) | |
1483 | psmouse->disconnect(psmouse); | |
1484 | ||
1485 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
1486 | input_free_device(new_dev); | |
1487 | psmouse->dev = old_dev; | |
1488 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); | |
1489 | psmouse_switch_protocol(psmouse, old_proto); | |
1490 | psmouse_initialize(psmouse); | |
1491 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
1492 | ||
1493 | return error; | |
1494 | } | |
1495 | ||
1496 | input_unregister_device(old_dev); | |
dbf4ccd6 DT |
1497 | |
1498 | if (parent && parent->pt_activate) | |
1499 | parent->pt_activate(parent); | |
1500 | ||
1501 | return count; | |
1502 | } | |
1503 | ||
cfe9e888 | 1504 | static ssize_t psmouse_attr_set_rate(struct psmouse *psmouse, void *data, const char *buf, size_t count) |
1da177e4 LT |
1505 | { |
1506 | unsigned long value; | |
1507 | char *rest; | |
1508 | ||
1509 | value = simple_strtoul(buf, &rest, 10); | |
1510 | if (*rest) | |
1511 | return -EINVAL; | |
1512 | ||
1513 | psmouse->set_rate(psmouse, value); | |
1514 | return count; | |
1515 | } | |
1516 | ||
cfe9e888 | 1517 | static ssize_t psmouse_attr_set_resolution(struct psmouse *psmouse, void *data, const char *buf, size_t count) |
1da177e4 LT |
1518 | { |
1519 | unsigned long value; | |
1520 | char *rest; | |
1521 | ||
1522 | value = simple_strtoul(buf, &rest, 10); | |
1523 | if (*rest) | |
1524 | return -EINVAL; | |
1525 | ||
1526 | psmouse->set_resolution(psmouse, value); | |
1527 | return count; | |
1528 | } | |
1529 | ||
1da177e4 LT |
1530 | |
1531 | static int psmouse_set_maxproto(const char *val, struct kernel_param *kp) | |
1532 | { | |
e38de678 | 1533 | const struct psmouse_protocol *proto; |
1da177e4 LT |
1534 | |
1535 | if (!val) | |
1536 | return -EINVAL; | |
1537 | ||
dbf4ccd6 | 1538 | proto = psmouse_protocol_by_name(val, strlen(val)); |
1da177e4 | 1539 | |
dbf4ccd6 DT |
1540 | if (!proto || !proto->maxproto) |
1541 | return -EINVAL; | |
1da177e4 | 1542 | |
dbf4ccd6 | 1543 | *((unsigned int *)kp->arg) = proto->type; |
1da177e4 | 1544 | |
541e316a | 1545 | return 0; |
1da177e4 LT |
1546 | } |
1547 | ||
1548 | static int psmouse_get_maxproto(char *buffer, struct kernel_param *kp) | |
1549 | { | |
dbf4ccd6 DT |
1550 | int type = *((unsigned int *)kp->arg); |
1551 | ||
1552 | return sprintf(buffer, "%s\n", psmouse_protocol_by_type(type)->name); | |
1da177e4 LT |
1553 | } |
1554 | ||
1555 | static int __init psmouse_init(void) | |
1556 | { | |
153a9df0 AM |
1557 | int err; |
1558 | ||
f0d5c6f4 DT |
1559 | kpsmoused_wq = create_singlethread_workqueue("kpsmoused"); |
1560 | if (!kpsmoused_wq) { | |
1561 | printk(KERN_ERR "psmouse: failed to create kpsmoused workqueue\n"); | |
1562 | return -ENOMEM; | |
1563 | } | |
1564 | ||
153a9df0 AM |
1565 | err = serio_register_driver(&psmouse_drv); |
1566 | if (err) | |
1567 | destroy_workqueue(kpsmoused_wq); | |
f0d5c6f4 | 1568 | |
153a9df0 | 1569 | return err; |
1da177e4 LT |
1570 | } |
1571 | ||
1572 | static void __exit psmouse_exit(void) | |
1573 | { | |
1574 | serio_unregister_driver(&psmouse_drv); | |
f0d5c6f4 | 1575 | destroy_workqueue(kpsmoused_wq); |
1da177e4 LT |
1576 | } |
1577 | ||
1578 | module_init(psmouse_init); | |
1579 | module_exit(psmouse_exit); |