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> | |
1da177e4 LT |
16 | #include <linux/slab.h> |
17 | #include <linux/interrupt.h> | |
18 | #include <linux/input.h> | |
19 | #include <linux/serio.h> | |
20 | #include <linux/init.h> | |
21 | #include <linux/libps2.h> | |
c14471dc IM |
22 | #include <linux/mutex.h> |
23 | ||
1da177e4 LT |
24 | #include "psmouse.h" |
25 | #include "synaptics.h" | |
26 | #include "logips2pp.h" | |
27 | #include "alps.h" | |
df08ef27 | 28 | #include "hgpk.h" |
02d7f589 | 29 | #include "lifebook.h" |
541e316a | 30 | #include "trackpoint.h" |
24bf10ab | 31 | #include "touchkit_ps2.h" |
2a0bd75e | 32 | #include "elantech.h" |
fc69f4a6 | 33 | #include "sentelic.h" |
1da177e4 LT |
34 | |
35 | #define DRIVER_DESC "PS/2 mouse driver" | |
36 | ||
37 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>"); | |
38 | MODULE_DESCRIPTION(DRIVER_DESC); | |
39 | MODULE_LICENSE("GPL"); | |
40 | ||
dbf4ccd6 | 41 | static unsigned int psmouse_max_proto = PSMOUSE_AUTO; |
1da177e4 LT |
42 | static int psmouse_set_maxproto(const char *val, struct kernel_param *kp); |
43 | static int psmouse_get_maxproto(char *buffer, struct kernel_param *kp); | |
1da177e4 LT |
44 | #define param_check_proto_abbrev(name, p) __param_check(name, p, unsigned int) |
45 | #define param_set_proto_abbrev psmouse_set_maxproto | |
46 | #define param_get_proto_abbrev psmouse_get_maxproto | |
47 | module_param_named(proto, psmouse_max_proto, proto_abbrev, 0644); | |
dbf4ccd6 | 48 | MODULE_PARM_DESC(proto, "Highest protocol extension to probe (bare, imps, exps, any). Useful for KVM switches."); |
1da177e4 LT |
49 | |
50 | static unsigned int psmouse_resolution = 200; | |
51 | module_param_named(resolution, psmouse_resolution, uint, 0644); | |
52 | MODULE_PARM_DESC(resolution, "Resolution, in dpi."); | |
53 | ||
54 | static unsigned int psmouse_rate = 100; | |
55 | module_param_named(rate, psmouse_rate, uint, 0644); | |
56 | MODULE_PARM_DESC(rate, "Report rate, in reports per second."); | |
57 | ||
58 | static unsigned int psmouse_smartscroll = 1; | |
59 | module_param_named(smartscroll, psmouse_smartscroll, bool, 0644); | |
60 | MODULE_PARM_DESC(smartscroll, "Logitech Smartscroll autorepeat, 1 = enabled (default), 0 = disabled."); | |
61 | ||
f0d5c6f4 | 62 | static unsigned int psmouse_resetafter = 5; |
1da177e4 LT |
63 | module_param_named(resetafter, psmouse_resetafter, uint, 0644); |
64 | MODULE_PARM_DESC(resetafter, "Reset device after so many bad packets (0 = never)."); | |
65 | ||
8bd0ee93 | 66 | static unsigned int psmouse_resync_time; |
f0d5c6f4 DT |
67 | module_param_named(resync_time, psmouse_resync_time, uint, 0644); |
68 | MODULE_PARM_DESC(resync_time, "How long can mouse stay idle before forcing resync (in seconds, 0 = never)."); | |
69 | ||
cfe9e888 DT |
70 | PSMOUSE_DEFINE_ATTR(protocol, S_IWUSR | S_IRUGO, |
71 | NULL, | |
72 | psmouse_attr_show_protocol, psmouse_attr_set_protocol); | |
73 | PSMOUSE_DEFINE_ATTR(rate, S_IWUSR | S_IRUGO, | |
74 | (void *) offsetof(struct psmouse, rate), | |
75 | psmouse_show_int_attr, psmouse_attr_set_rate); | |
76 | PSMOUSE_DEFINE_ATTR(resolution, S_IWUSR | S_IRUGO, | |
77 | (void *) offsetof(struct psmouse, resolution), | |
78 | psmouse_show_int_attr, psmouse_attr_set_resolution); | |
79 | PSMOUSE_DEFINE_ATTR(resetafter, S_IWUSR | S_IRUGO, | |
80 | (void *) offsetof(struct psmouse, resetafter), | |
81 | psmouse_show_int_attr, psmouse_set_int_attr); | |
f0d5c6f4 DT |
82 | PSMOUSE_DEFINE_ATTR(resync_time, S_IWUSR | S_IRUGO, |
83 | (void *) offsetof(struct psmouse, resync_time), | |
84 | psmouse_show_int_attr, psmouse_set_int_attr); | |
cfe9e888 DT |
85 | |
86 | static struct attribute *psmouse_attributes[] = { | |
87 | &psmouse_attr_protocol.dattr.attr, | |
88 | &psmouse_attr_rate.dattr.attr, | |
89 | &psmouse_attr_resolution.dattr.attr, | |
90 | &psmouse_attr_resetafter.dattr.attr, | |
f0d5c6f4 | 91 | &psmouse_attr_resync_time.dattr.attr, |
cfe9e888 DT |
92 | NULL |
93 | }; | |
94 | ||
95 | static struct attribute_group psmouse_attribute_group = { | |
96 | .attrs = psmouse_attributes, | |
97 | }; | |
1da177e4 | 98 | |
04df1925 | 99 | /* |
c14471dc | 100 | * psmouse_mutex protects all operations changing state of mouse |
04df1925 DT |
101 | * (connecting, disconnecting, changing rate or resolution via |
102 | * sysfs). We could use a per-device semaphore but since there | |
103 | * rarely more than one PS/2 mouse connected and since semaphore | |
104 | * is taken in "slow" paths it is not worth it. | |
105 | */ | |
c14471dc | 106 | static DEFINE_MUTEX(psmouse_mutex); |
04df1925 | 107 | |
f0d5c6f4 DT |
108 | static struct workqueue_struct *kpsmoused_wq; |
109 | ||
dbf4ccd6 DT |
110 | struct psmouse_protocol { |
111 | enum psmouse_type type; | |
b7802c5c | 112 | bool maxproto; |
e38de678 HD |
113 | const char *name; |
114 | const char *alias; | |
b7802c5c | 115 | int (*detect)(struct psmouse *, bool); |
dbf4ccd6 DT |
116 | int (*init)(struct psmouse *); |
117 | }; | |
1da177e4 LT |
118 | |
119 | /* | |
120 | * psmouse_process_byte() analyzes the PS/2 data stream and reports | |
121 | * relevant events to the input module once full packet has arrived. | |
122 | */ | |
123 | ||
7d12e780 | 124 | static psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse) |
1da177e4 | 125 | { |
2e5b636b | 126 | struct input_dev *dev = psmouse->dev; |
1da177e4 LT |
127 | unsigned char *packet = psmouse->packet; |
128 | ||
129 | if (psmouse->pktcnt < psmouse->pktsize) | |
130 | return PSMOUSE_GOOD_DATA; | |
131 | ||
132 | /* | |
133 | * Full packet accumulated, process it | |
134 | */ | |
135 | ||
1da177e4 LT |
136 | /* |
137 | * Scroll wheel on IntelliMice, scroll buttons on NetMice | |
138 | */ | |
139 | ||
140 | if (psmouse->type == PSMOUSE_IMPS || psmouse->type == PSMOUSE_GENPS) | |
141 | input_report_rel(dev, REL_WHEEL, -(signed char) packet[3]); | |
142 | ||
143 | /* | |
144 | * Scroll wheel and buttons on IntelliMouse Explorer | |
145 | */ | |
146 | ||
147 | if (psmouse->type == PSMOUSE_IMEX) { | |
b0c9ad8e PB |
148 | switch (packet[3] & 0xC0) { |
149 | case 0x80: /* vertical scroll on IntelliMouse Explorer 4.0 */ | |
150 | input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31)); | |
151 | break; | |
152 | case 0x40: /* horizontal scroll on IntelliMouse Explorer 4.0 */ | |
153 | input_report_rel(dev, REL_HWHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31)); | |
154 | break; | |
155 | case 0x00: | |
156 | case 0xC0: | |
157 | input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 8) - (int) (packet[3] & 7)); | |
158 | input_report_key(dev, BTN_SIDE, (packet[3] >> 4) & 1); | |
159 | input_report_key(dev, BTN_EXTRA, (packet[3] >> 5) & 1); | |
160 | break; | |
161 | } | |
1da177e4 LT |
162 | } |
163 | ||
164 | /* | |
165 | * Extra buttons on Genius NewNet 3D | |
166 | */ | |
167 | ||
168 | if (psmouse->type == PSMOUSE_GENPS) { | |
169 | input_report_key(dev, BTN_SIDE, (packet[0] >> 6) & 1); | |
170 | input_report_key(dev, BTN_EXTRA, (packet[0] >> 7) & 1); | |
171 | } | |
172 | ||
173 | /* | |
174 | * Extra button on ThinkingMouse | |
175 | */ | |
176 | if (psmouse->type == PSMOUSE_THINKPS) { | |
177 | input_report_key(dev, BTN_EXTRA, (packet[0] >> 3) & 1); | |
178 | /* Without this bit of weirdness moving up gives wildly high Y changes. */ | |
179 | packet[1] |= (packet[0] & 0x40) << 1; | |
180 | } | |
181 | ||
aea6a461 AR |
182 | /* |
183 | * Cortron PS2 Trackball reports SIDE button on the 4th bit of the first | |
184 | * byte. | |
185 | */ | |
186 | if (psmouse->type == PSMOUSE_CORTRON) { | |
187 | input_report_key(dev, BTN_SIDE, (packet[0] >> 3) & 1); | |
188 | packet[0] |= 0x08; | |
189 | } | |
190 | ||
1da177e4 LT |
191 | /* |
192 | * Generic PS/2 Mouse | |
193 | */ | |
194 | ||
195 | input_report_key(dev, BTN_LEFT, packet[0] & 1); | |
196 | input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1); | |
197 | input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1); | |
198 | ||
199 | input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0); | |
200 | input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0); | |
201 | ||
202 | input_sync(dev); | |
203 | ||
204 | return PSMOUSE_FULL_PACKET; | |
205 | } | |
206 | ||
8bf020ee AS |
207 | void psmouse_queue_work(struct psmouse *psmouse, struct delayed_work *work, |
208 | unsigned long delay) | |
209 | { | |
210 | queue_delayed_work(kpsmoused_wq, work, delay); | |
211 | } | |
212 | ||
1da177e4 | 213 | /* |
f0d5c6f4 DT |
214 | * __psmouse_set_state() sets new psmouse state and resets all flags. |
215 | */ | |
216 | ||
217 | static inline void __psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state) | |
218 | { | |
219 | psmouse->state = new_state; | |
b7802c5c | 220 | psmouse->pktcnt = psmouse->out_of_sync_cnt = 0; |
f0d5c6f4 DT |
221 | psmouse->ps2dev.flags = 0; |
222 | psmouse->last = jiffies; | |
223 | } | |
224 | ||
225 | ||
226 | /* | |
227 | * psmouse_set_state() sets new psmouse state and resets all flags and | |
228 | * counters while holding serio lock so fighting with interrupt handler | |
229 | * is not a concern. | |
230 | */ | |
231 | ||
a48cf5f3 | 232 | void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state) |
f0d5c6f4 DT |
233 | { |
234 | serio_pause_rx(psmouse->ps2dev.serio); | |
235 | __psmouse_set_state(psmouse, new_state); | |
236 | serio_continue_rx(psmouse->ps2dev.serio); | |
237 | } | |
238 | ||
239 | /* | |
240 | * psmouse_handle_byte() processes one byte of the input data stream | |
241 | * by calling corresponding protocol handler. | |
242 | */ | |
243 | ||
7d12e780 | 244 | static int psmouse_handle_byte(struct psmouse *psmouse) |
f0d5c6f4 | 245 | { |
7d12e780 | 246 | psmouse_ret_t rc = psmouse->protocol_handler(psmouse); |
f0d5c6f4 DT |
247 | |
248 | switch (rc) { | |
249 | case PSMOUSE_BAD_DATA: | |
250 | if (psmouse->state == PSMOUSE_ACTIVATED) { | |
251 | printk(KERN_WARNING "psmouse.c: %s at %s lost sync at byte %d\n", | |
252 | psmouse->name, psmouse->phys, psmouse->pktcnt); | |
b7802c5c | 253 | if (++psmouse->out_of_sync_cnt == psmouse->resetafter) { |
f0d5c6f4 DT |
254 | __psmouse_set_state(psmouse, PSMOUSE_IGNORE); |
255 | printk(KERN_NOTICE "psmouse.c: issuing reconnect request\n"); | |
256 | serio_reconnect(psmouse->ps2dev.serio); | |
257 | return -1; | |
258 | } | |
259 | } | |
260 | psmouse->pktcnt = 0; | |
261 | break; | |
262 | ||
263 | case PSMOUSE_FULL_PACKET: | |
264 | psmouse->pktcnt = 0; | |
b7802c5c DT |
265 | if (psmouse->out_of_sync_cnt) { |
266 | psmouse->out_of_sync_cnt = 0; | |
f0d5c6f4 DT |
267 | printk(KERN_NOTICE "psmouse.c: %s at %s - driver resynched.\n", |
268 | psmouse->name, psmouse->phys); | |
269 | } | |
270 | break; | |
271 | ||
272 | case PSMOUSE_GOOD_DATA: | |
273 | break; | |
274 | } | |
275 | return 0; | |
276 | } | |
277 | ||
278 | /* | |
279 | * psmouse_interrupt() handles incoming characters, either passing them | |
280 | * for normal processing or gathering them as command response. | |
1da177e4 LT |
281 | */ |
282 | ||
283 | static irqreturn_t psmouse_interrupt(struct serio *serio, | |
7d12e780 | 284 | unsigned char data, unsigned int flags) |
1da177e4 LT |
285 | { |
286 | struct psmouse *psmouse = serio_get_drvdata(serio); | |
1da177e4 LT |
287 | |
288 | if (psmouse->state == PSMOUSE_IGNORE) | |
289 | goto out; | |
290 | ||
291 | if (flags & (SERIO_PARITY|SERIO_TIMEOUT)) { | |
292 | if (psmouse->state == PSMOUSE_ACTIVATED) | |
293 | printk(KERN_WARNING "psmouse.c: bad data from KBC -%s%s\n", | |
294 | flags & SERIO_TIMEOUT ? " timeout" : "", | |
295 | flags & SERIO_PARITY ? " bad parity" : ""); | |
296 | ps2_cmd_aborted(&psmouse->ps2dev); | |
297 | goto out; | |
298 | } | |
299 | ||
300 | if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_ACK)) | |
301 | if (ps2_handle_ack(&psmouse->ps2dev, data)) | |
302 | goto out; | |
303 | ||
304 | if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_CMD)) | |
305 | if (ps2_handle_response(&psmouse->ps2dev, data)) | |
306 | goto out; | |
307 | ||
f0d5c6f4 | 308 | if (psmouse->state <= PSMOUSE_RESYNCING) |
1da177e4 LT |
309 | goto out; |
310 | ||
311 | if (psmouse->state == PSMOUSE_ACTIVATED && | |
312 | psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) { | |
f0d5c6f4 | 313 | printk(KERN_INFO "psmouse.c: %s at %s lost synchronization, throwing %d bytes away.\n", |
1da177e4 | 314 | psmouse->name, psmouse->phys, psmouse->pktcnt); |
f0d5c6f4 DT |
315 | psmouse->badbyte = psmouse->packet[0]; |
316 | __psmouse_set_state(psmouse, PSMOUSE_RESYNCING); | |
8bf020ee | 317 | psmouse_queue_work(psmouse, &psmouse->resync_work, 0); |
f0d5c6f4 | 318 | goto out; |
1da177e4 LT |
319 | } |
320 | ||
1da177e4 | 321 | psmouse->packet[psmouse->pktcnt++] = data; |
f0d5c6f4 DT |
322 | /* |
323 | * Check if this is a new device announcement (0xAA 0x00) | |
324 | */ | |
325 | if (unlikely(psmouse->packet[0] == PSMOUSE_RET_BAT && psmouse->pktcnt <= 2)) { | |
89c9b480 DT |
326 | if (psmouse->pktcnt == 1) { |
327 | psmouse->last = jiffies; | |
1da177e4 | 328 | goto out; |
89c9b480 | 329 | } |
1da177e4 | 330 | |
535650fd ZH |
331 | if (psmouse->packet[1] == PSMOUSE_RET_ID || |
332 | (psmouse->type == PSMOUSE_HGPK && | |
333 | psmouse->packet[1] == PSMOUSE_RET_BAT)) { | |
f0d5c6f4 DT |
334 | __psmouse_set_state(psmouse, PSMOUSE_IGNORE); |
335 | serio_reconnect(serio); | |
336 | goto out; | |
1da177e4 | 337 | } |
f0d5c6f4 DT |
338 | /* |
339 | * Not a new device, try processing first byte normally | |
340 | */ | |
341 | psmouse->pktcnt = 1; | |
7d12e780 | 342 | if (psmouse_handle_byte(psmouse)) |
f0d5c6f4 | 343 | goto out; |
1da177e4 | 344 | |
f0d5c6f4 DT |
345 | psmouse->packet[psmouse->pktcnt++] = data; |
346 | } | |
1da177e4 | 347 | |
f0d5c6f4 DT |
348 | /* |
349 | * See if we need to force resync because mouse was idle for too long | |
350 | */ | |
351 | if (psmouse->state == PSMOUSE_ACTIVATED && | |
352 | psmouse->pktcnt == 1 && psmouse->resync_time && | |
353 | time_after(jiffies, psmouse->last + psmouse->resync_time * HZ)) { | |
354 | psmouse->badbyte = psmouse->packet[0]; | |
355 | __psmouse_set_state(psmouse, PSMOUSE_RESYNCING); | |
8bf020ee | 356 | psmouse_queue_work(psmouse, &psmouse->resync_work, 0); |
f0d5c6f4 DT |
357 | goto out; |
358 | } | |
1da177e4 | 359 | |
f0d5c6f4 | 360 | psmouse->last = jiffies; |
7d12e780 | 361 | psmouse_handle_byte(psmouse); |
1da177e4 | 362 | |
f0d5c6f4 | 363 | out: |
1da177e4 LT |
364 | return IRQ_HANDLED; |
365 | } | |
366 | ||
367 | ||
368 | /* | |
369 | * psmouse_sliced_command() sends an extended PS/2 command to the mouse | |
370 | * using sliced syntax, understood by advanced devices, such as Logitech | |
371 | * or Synaptics touchpads. The command is encoded as: | |
372 | * 0xE6 0xE8 rr 0xE8 ss 0xE8 tt 0xE8 uu where (rr*64)+(ss*16)+(tt*4)+uu | |
373 | * is the command. | |
374 | */ | |
375 | int psmouse_sliced_command(struct psmouse *psmouse, unsigned char command) | |
376 | { | |
377 | int i; | |
378 | ||
379 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11)) | |
380 | return -1; | |
381 | ||
382 | for (i = 6; i >= 0; i -= 2) { | |
383 | unsigned char d = (command >> i) & 3; | |
384 | if (ps2_command(&psmouse->ps2dev, &d, PSMOUSE_CMD_SETRES)) | |
385 | return -1; | |
386 | } | |
387 | ||
388 | return 0; | |
389 | } | |
390 | ||
391 | ||
392 | /* | |
393 | * psmouse_reset() resets the mouse into power-on state. | |
394 | */ | |
395 | int psmouse_reset(struct psmouse *psmouse) | |
396 | { | |
397 | unsigned char param[2]; | |
398 | ||
399 | if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_RESET_BAT)) | |
400 | return -1; | |
401 | ||
402 | if (param[0] != PSMOUSE_RET_BAT && param[1] != PSMOUSE_RET_ID) | |
403 | return -1; | |
404 | ||
405 | return 0; | |
406 | } | |
407 | ||
408 | ||
409 | /* | |
410 | * Genius NetMouse magic init. | |
411 | */ | |
b7802c5c | 412 | static int genius_detect(struct psmouse *psmouse, bool set_properties) |
1da177e4 LT |
413 | { |
414 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
415 | unsigned char param[4]; | |
416 | ||
417 | param[0] = 3; | |
418 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); | |
419 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
420 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
421 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
422 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); | |
423 | ||
424 | if (param[0] != 0x00 || param[1] != 0x33 || param[2] != 0x55) | |
425 | return -1; | |
426 | ||
427 | if (set_properties) { | |
b7802c5c DT |
428 | __set_bit(BTN_EXTRA, psmouse->dev->keybit); |
429 | __set_bit(BTN_SIDE, psmouse->dev->keybit); | |
430 | __set_bit(REL_WHEEL, psmouse->dev->relbit); | |
1da177e4 LT |
431 | |
432 | psmouse->vendor = "Genius"; | |
a3f3f317 | 433 | psmouse->name = "Mouse"; |
1da177e4 LT |
434 | psmouse->pktsize = 4; |
435 | } | |
436 | ||
437 | return 0; | |
438 | } | |
439 | ||
440 | /* | |
441 | * IntelliMouse magic init. | |
442 | */ | |
b7802c5c | 443 | static int intellimouse_detect(struct psmouse *psmouse, bool set_properties) |
1da177e4 LT |
444 | { |
445 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
446 | unsigned char param[2]; | |
447 | ||
448 | param[0] = 200; | |
449 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
450 | param[0] = 100; | |
451 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
452 | param[0] = 80; | |
453 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
454 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); | |
455 | ||
456 | if (param[0] != 3) | |
457 | return -1; | |
458 | ||
459 | if (set_properties) { | |
b7802c5c DT |
460 | __set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
461 | __set_bit(REL_WHEEL, psmouse->dev->relbit); | |
1da177e4 LT |
462 | |
463 | if (!psmouse->vendor) psmouse->vendor = "Generic"; | |
464 | if (!psmouse->name) psmouse->name = "Wheel Mouse"; | |
465 | psmouse->pktsize = 4; | |
466 | } | |
467 | ||
468 | return 0; | |
469 | } | |
470 | ||
471 | /* | |
472 | * Try IntelliMouse/Explorer magic init. | |
473 | */ | |
b7802c5c | 474 | static int im_explorer_detect(struct psmouse *psmouse, bool set_properties) |
1da177e4 LT |
475 | { |
476 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
477 | unsigned char param[2]; | |
478 | ||
479 | intellimouse_detect(psmouse, 0); | |
480 | ||
481 | param[0] = 200; | |
482 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
483 | param[0] = 200; | |
484 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
485 | param[0] = 80; | |
486 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
487 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); | |
488 | ||
489 | if (param[0] != 4) | |
490 | return -1; | |
491 | ||
b0c9ad8e PB |
492 | /* Magic to enable horizontal scrolling on IntelliMouse 4.0 */ |
493 | param[0] = 200; | |
494 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
495 | param[0] = 80; | |
496 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
497 | param[0] = 40; | |
498 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
499 | ||
1da177e4 | 500 | if (set_properties) { |
b7802c5c DT |
501 | __set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
502 | __set_bit(REL_WHEEL, psmouse->dev->relbit); | |
503 | __set_bit(REL_HWHEEL, psmouse->dev->relbit); | |
504 | __set_bit(BTN_SIDE, psmouse->dev->keybit); | |
505 | __set_bit(BTN_EXTRA, psmouse->dev->keybit); | |
1da177e4 LT |
506 | |
507 | if (!psmouse->vendor) psmouse->vendor = "Generic"; | |
508 | if (!psmouse->name) psmouse->name = "Explorer Mouse"; | |
509 | psmouse->pktsize = 4; | |
510 | } | |
511 | ||
512 | return 0; | |
513 | } | |
514 | ||
515 | /* | |
516 | * Kensington ThinkingMouse / ExpertMouse magic init. | |
517 | */ | |
b7802c5c | 518 | static int thinking_detect(struct psmouse *psmouse, bool set_properties) |
1da177e4 LT |
519 | { |
520 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
521 | unsigned char param[2]; | |
e38de678 | 522 | static const unsigned char seq[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20 }; |
1da177e4 LT |
523 | int i; |
524 | ||
525 | param[0] = 10; | |
526 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
527 | param[0] = 0; | |
528 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); | |
e38de678 HD |
529 | for (i = 0; i < ARRAY_SIZE(seq); i++) { |
530 | param[0] = seq[i]; | |
531 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
532 | } | |
1da177e4 LT |
533 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); |
534 | ||
535 | if (param[0] != 2) | |
536 | return -1; | |
537 | ||
538 | if (set_properties) { | |
b7802c5c | 539 | __set_bit(BTN_EXTRA, psmouse->dev->keybit); |
1da177e4 LT |
540 | |
541 | psmouse->vendor = "Kensington"; | |
542 | psmouse->name = "ThinkingMouse"; | |
543 | } | |
544 | ||
545 | return 0; | |
546 | } | |
547 | ||
548 | /* | |
549 | * Bare PS/2 protocol "detection". Always succeeds. | |
550 | */ | |
b7802c5c | 551 | static int ps2bare_detect(struct psmouse *psmouse, bool set_properties) |
1da177e4 | 552 | { |
dbf4ccd6 DT |
553 | if (set_properties) { |
554 | if (!psmouse->vendor) psmouse->vendor = "Generic"; | |
555 | if (!psmouse->name) psmouse->name = "Mouse"; | |
556 | } | |
1da177e4 LT |
557 | |
558 | return 0; | |
559 | } | |
560 | ||
aea6a461 AR |
561 | /* |
562 | * Cortron PS/2 protocol detection. There's no special way to detect it, so it | |
563 | * must be forced by sysfs protocol writing. | |
564 | */ | |
b7802c5c | 565 | static int cortron_detect(struct psmouse *psmouse, bool set_properties) |
aea6a461 AR |
566 | { |
567 | if (set_properties) { | |
568 | psmouse->vendor = "Cortron"; | |
569 | psmouse->name = "PS/2 Trackball"; | |
b7802c5c | 570 | __set_bit(BTN_SIDE, psmouse->dev->keybit); |
aea6a461 AR |
571 | } |
572 | ||
573 | return 0; | |
574 | } | |
dbf4ccd6 | 575 | |
1da177e4 LT |
576 | /* |
577 | * psmouse_extensions() probes for any extensions to the basic PS/2 protocol | |
578 | * the mouse may have. | |
579 | */ | |
580 | ||
581 | static int psmouse_extensions(struct psmouse *psmouse, | |
b7802c5c | 582 | unsigned int max_proto, bool set_properties) |
1da177e4 | 583 | { |
b7802c5c | 584 | bool synaptics_hardware = true; |
1da177e4 | 585 | |
a15d60f8 DT |
586 | /* |
587 | * We always check for lifebook because it does not disturb mouse | |
588 | * (it only checks DMI information). | |
589 | */ | |
dbf4ccd6 | 590 | if (lifebook_detect(psmouse, set_properties) == 0) { |
a15d60f8 DT |
591 | if (max_proto > PSMOUSE_IMEX) { |
592 | if (!set_properties || lifebook_init(psmouse) == 0) | |
593 | return PSMOUSE_LIFEBOOK; | |
594 | } | |
595 | } | |
02d7f589 | 596 | |
1da177e4 LT |
597 | /* |
598 | * Try Kensington ThinkingMouse (we try first, because synaptics probe | |
599 | * upsets the thinkingmouse). | |
600 | */ | |
601 | ||
602 | if (max_proto > PSMOUSE_IMEX && thinking_detect(psmouse, set_properties) == 0) | |
603 | return PSMOUSE_THINKPS; | |
604 | ||
605 | /* | |
55e3d922 AS |
606 | * Try Synaptics TouchPad. Note that probing is done even if Synaptics protocol |
607 | * support is disabled in config - we need to know if it is synaptics so we | |
608 | * can reset it properly after probing for intellimouse. | |
1da177e4 LT |
609 | */ |
610 | if (max_proto > PSMOUSE_PS2 && synaptics_detect(psmouse, set_properties) == 0) { | |
b7802c5c | 611 | synaptics_hardware = true; |
1da177e4 LT |
612 | |
613 | if (max_proto > PSMOUSE_IMEX) { | |
614 | if (!set_properties || synaptics_init(psmouse) == 0) | |
615 | return PSMOUSE_SYNAPTICS; | |
616 | /* | |
617 | * Some Synaptics touchpads can emulate extended protocols (like IMPS/2). | |
618 | * Unfortunately Logitech/Genius probes confuse some firmware versions so | |
619 | * we'll have to skip them. | |
620 | */ | |
621 | max_proto = PSMOUSE_IMEX; | |
622 | } | |
623 | /* | |
624 | * Make sure that touchpad is in relative mode, gestures (taps) are enabled | |
625 | */ | |
626 | synaptics_reset(psmouse); | |
627 | } | |
628 | ||
629 | /* | |
630 | * Try ALPS TouchPad | |
631 | */ | |
632 | if (max_proto > PSMOUSE_IMEX) { | |
633 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); | |
634 | if (alps_detect(psmouse, set_properties) == 0) { | |
635 | if (!set_properties || alps_init(psmouse) == 0) | |
636 | return PSMOUSE_ALPS; | |
637 | /* | |
638 | * Init failed, try basic relative protocols | |
639 | */ | |
640 | max_proto = PSMOUSE_IMEX; | |
641 | } | |
642 | } | |
643 | ||
df08ef27 AS |
644 | /* |
645 | * Try OLPC HGPK touchpad. | |
646 | */ | |
647 | if (max_proto > PSMOUSE_IMEX && | |
648 | hgpk_detect(psmouse, set_properties) == 0) { | |
649 | if (!set_properties || hgpk_init(psmouse) == 0) | |
650 | return PSMOUSE_HGPK; | |
651 | /* | |
652 | * Init failed, try basic relative protocols | |
653 | */ | |
654 | max_proto = PSMOUSE_IMEX; | |
655 | } | |
24bf10ab | 656 | |
2a0bd75e AO |
657 | /* |
658 | * Try Elantech touchpad. | |
659 | */ | |
660 | if (max_proto > PSMOUSE_IMEX && | |
661 | elantech_detect(psmouse, set_properties) == 0) { | |
662 | if (!set_properties || elantech_init(psmouse) == 0) | |
663 | return PSMOUSE_ELANTECH; | |
664 | /* | |
665 | * Init failed, try basic relative protocols | |
666 | */ | |
667 | max_proto = PSMOUSE_IMEX; | |
668 | } | |
669 | ||
fc69f4a6 TL |
670 | /* |
671 | * Try Finger Sensing Pad | |
672 | */ | |
673 | if (max_proto > PSMOUSE_IMEX) { | |
674 | if (fsp_detect(psmouse, set_properties) == 0) { | |
675 | if (!set_properties || fsp_init(psmouse) == 0) | |
676 | return PSMOUSE_FSP; | |
677 | /* | |
678 | * Init failed, try basic relative protocols | |
679 | */ | |
680 | max_proto = PSMOUSE_IMEX; | |
681 | } | |
682 | } | |
683 | ||
df08ef27 | 684 | if (max_proto > PSMOUSE_IMEX) { |
24bf10ab SL |
685 | if (genius_detect(psmouse, set_properties) == 0) |
686 | return PSMOUSE_GENPS; | |
687 | ||
688 | if (ps2pp_init(psmouse, set_properties) == 0) | |
689 | return PSMOUSE_PS2PP; | |
1da177e4 | 690 | |
24bf10ab SL |
691 | if (trackpoint_detect(psmouse, set_properties) == 0) |
692 | return PSMOUSE_TRACKPOINT; | |
1da177e4 | 693 | |
24bf10ab SL |
694 | if (touchkit_ps2_detect(psmouse, set_properties) == 0) |
695 | return PSMOUSE_TOUCHKIT_PS2; | |
696 | } | |
ba44995a | 697 | |
1da177e4 LT |
698 | /* |
699 | * Reset to defaults in case the device got confused by extended | |
554fc193 AZ |
700 | * protocol probes. Note that we follow up with full reset because |
701 | * some mice put themselves to sleep when they see PSMOUSE_RESET_DIS. | |
1da177e4 | 702 | */ |
554fc193 | 703 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); |
ba44995a | 704 | psmouse_reset(psmouse); |
1da177e4 LT |
705 | |
706 | if (max_proto >= PSMOUSE_IMEX && im_explorer_detect(psmouse, set_properties) == 0) | |
707 | return PSMOUSE_IMEX; | |
708 | ||
709 | if (max_proto >= PSMOUSE_IMPS && intellimouse_detect(psmouse, set_properties) == 0) | |
710 | return PSMOUSE_IMPS; | |
711 | ||
712 | /* | |
713 | * Okay, all failed, we have a standard mouse here. The number of the buttons | |
714 | * is still a question, though. We assume 3. | |
715 | */ | |
716 | ps2bare_detect(psmouse, set_properties); | |
717 | ||
718 | if (synaptics_hardware) { | |
719 | /* | |
720 | * We detected Synaptics hardware but it did not respond to IMPS/2 probes. | |
721 | * We need to reset the touchpad because if there is a track point on the | |
722 | * pass through port it could get disabled while probing for protocol | |
723 | * extensions. | |
724 | */ | |
725 | psmouse_reset(psmouse); | |
1da177e4 LT |
726 | } |
727 | ||
728 | return PSMOUSE_PS2; | |
729 | } | |
730 | ||
e38de678 | 731 | static const struct psmouse_protocol psmouse_protocols[] = { |
dbf4ccd6 DT |
732 | { |
733 | .type = PSMOUSE_PS2, | |
734 | .name = "PS/2", | |
735 | .alias = "bare", | |
b7802c5c | 736 | .maxproto = true, |
dbf4ccd6 DT |
737 | .detect = ps2bare_detect, |
738 | }, | |
55e3d922 | 739 | #ifdef CONFIG_MOUSE_PS2_LOGIPS2PP |
dbf4ccd6 DT |
740 | { |
741 | .type = PSMOUSE_PS2PP, | |
742 | .name = "PS2++", | |
743 | .alias = "logitech", | |
744 | .detect = ps2pp_init, | |
745 | }, | |
55e3d922 | 746 | #endif |
dbf4ccd6 DT |
747 | { |
748 | .type = PSMOUSE_THINKPS, | |
749 | .name = "ThinkPS/2", | |
750 | .alias = "thinkps", | |
751 | .detect = thinking_detect, | |
752 | }, | |
753 | { | |
754 | .type = PSMOUSE_GENPS, | |
755 | .name = "GenPS/2", | |
756 | .alias = "genius", | |
757 | .detect = genius_detect, | |
758 | }, | |
759 | { | |
760 | .type = PSMOUSE_IMPS, | |
761 | .name = "ImPS/2", | |
762 | .alias = "imps", | |
b7802c5c | 763 | .maxproto = true, |
dbf4ccd6 DT |
764 | .detect = intellimouse_detect, |
765 | }, | |
766 | { | |
767 | .type = PSMOUSE_IMEX, | |
768 | .name = "ImExPS/2", | |
769 | .alias = "exps", | |
b7802c5c | 770 | .maxproto = true, |
dbf4ccd6 DT |
771 | .detect = im_explorer_detect, |
772 | }, | |
55e3d922 | 773 | #ifdef CONFIG_MOUSE_PS2_SYNAPTICS |
dbf4ccd6 DT |
774 | { |
775 | .type = PSMOUSE_SYNAPTICS, | |
776 | .name = "SynPS/2", | |
777 | .alias = "synaptics", | |
778 | .detect = synaptics_detect, | |
779 | .init = synaptics_init, | |
780 | }, | |
55e3d922 AS |
781 | #endif |
782 | #ifdef CONFIG_MOUSE_PS2_ALPS | |
dbf4ccd6 DT |
783 | { |
784 | .type = PSMOUSE_ALPS, | |
785 | .name = "AlpsPS/2", | |
786 | .alias = "alps", | |
787 | .detect = alps_detect, | |
788 | .init = alps_init, | |
789 | }, | |
55e3d922 AS |
790 | #endif |
791 | #ifdef CONFIG_MOUSE_PS2_LIFEBOOK | |
dbf4ccd6 DT |
792 | { |
793 | .type = PSMOUSE_LIFEBOOK, | |
794 | .name = "LBPS/2", | |
795 | .alias = "lifebook", | |
796 | .init = lifebook_init, | |
797 | }, | |
55e3d922 AS |
798 | #endif |
799 | #ifdef CONFIG_MOUSE_PS2_TRACKPOINT | |
541e316a SE |
800 | { |
801 | .type = PSMOUSE_TRACKPOINT, | |
802 | .name = "TPPS/2", | |
803 | .alias = "trackpoint", | |
804 | .detect = trackpoint_detect, | |
805 | }, | |
55e3d922 AS |
806 | #endif |
807 | #ifdef CONFIG_MOUSE_PS2_TOUCHKIT | |
24bf10ab SL |
808 | { |
809 | .type = PSMOUSE_TOUCHKIT_PS2, | |
810 | .name = "touchkitPS/2", | |
811 | .alias = "touchkit", | |
812 | .detect = touchkit_ps2_detect, | |
813 | }, | |
df08ef27 AS |
814 | #endif |
815 | #ifdef CONFIG_MOUSE_PS2_OLPC | |
816 | { | |
817 | .type = PSMOUSE_HGPK, | |
818 | .name = "OLPC HGPK", | |
819 | .alias = "hgpk", | |
820 | .detect = hgpk_detect, | |
821 | }, | |
55e3d922 | 822 | #endif |
2a0bd75e AO |
823 | #ifdef CONFIG_MOUSE_PS2_ELANTECH |
824 | { | |
825 | .type = PSMOUSE_ELANTECH, | |
826 | .name = "ETPS/2", | |
827 | .alias = "elantech", | |
828 | .detect = elantech_detect, | |
829 | .init = elantech_init, | |
830 | }, | |
fc69f4a6 TL |
831 | #endif |
832 | #ifdef CONFIG_MOUSE_PS2_SENTELIC | |
833 | { | |
834 | .type = PSMOUSE_FSP, | |
835 | .name = "FSPPS/2", | |
836 | .alias = "fsp", | |
837 | .detect = fsp_detect, | |
838 | .init = fsp_init, | |
839 | }, | |
840 | #endif | |
aea6a461 AR |
841 | { |
842 | .type = PSMOUSE_CORTRON, | |
843 | .name = "CortronPS/2", | |
844 | .alias = "cortps", | |
845 | .detect = cortron_detect, | |
846 | }, | |
dbf4ccd6 DT |
847 | { |
848 | .type = PSMOUSE_AUTO, | |
849 | .name = "auto", | |
850 | .alias = "any", | |
b7802c5c | 851 | .maxproto = true, |
dbf4ccd6 DT |
852 | }, |
853 | }; | |
854 | ||
e38de678 | 855 | static const struct psmouse_protocol *psmouse_protocol_by_type(enum psmouse_type type) |
dbf4ccd6 DT |
856 | { |
857 | int i; | |
858 | ||
859 | for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++) | |
860 | if (psmouse_protocols[i].type == type) | |
861 | return &psmouse_protocols[i]; | |
862 | ||
863 | WARN_ON(1); | |
864 | return &psmouse_protocols[0]; | |
865 | } | |
866 | ||
e38de678 | 867 | static const struct psmouse_protocol *psmouse_protocol_by_name(const char *name, size_t len) |
dbf4ccd6 | 868 | { |
e38de678 | 869 | const struct psmouse_protocol *p; |
dbf4ccd6 DT |
870 | int i; |
871 | ||
872 | for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++) { | |
873 | p = &psmouse_protocols[i]; | |
874 | ||
875 | if ((strlen(p->name) == len && !strncmp(p->name, name, len)) || | |
876 | (strlen(p->alias) == len && !strncmp(p->alias, name, len))) | |
877 | return &psmouse_protocols[i]; | |
878 | } | |
879 | ||
880 | return NULL; | |
881 | } | |
882 | ||
883 | ||
1da177e4 LT |
884 | /* |
885 | * psmouse_probe() probes for a PS/2 mouse. | |
886 | */ | |
887 | ||
888 | static int psmouse_probe(struct psmouse *psmouse) | |
889 | { | |
890 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
891 | unsigned char param[2]; | |
892 | ||
893 | /* | |
894 | * First, we check if it's a mouse. It should send 0x00 or 0x03 | |
895 | * in case of an IntelliMouse in 4-byte mode or 0x04 for IM Explorer. | |
7741e931 VP |
896 | * Sunrex K8561 IR Keyboard/Mouse reports 0xff on second and subsequent |
897 | * ID queries, probably due to a firmware bug. | |
1da177e4 LT |
898 | */ |
899 | ||
900 | param[0] = 0xa5; | |
901 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) | |
902 | return -1; | |
903 | ||
7741e931 VP |
904 | if (param[0] != 0x00 && param[0] != 0x03 && |
905 | param[0] != 0x04 && param[0] != 0xff) | |
1da177e4 LT |
906 | return -1; |
907 | ||
908 | /* | |
909 | * Then we reset and disable the mouse so that it doesn't generate events. | |
910 | */ | |
911 | ||
912 | if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_DIS)) | |
913 | printk(KERN_WARNING "psmouse.c: Failed to reset mouse on %s\n", ps2dev->serio->phys); | |
914 | ||
915 | return 0; | |
916 | } | |
917 | ||
918 | /* | |
919 | * Here we set the mouse resolution. | |
920 | */ | |
921 | ||
922 | void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution) | |
923 | { | |
e38de678 HD |
924 | static const unsigned char params[] = { 0, 1, 2, 2, 3 }; |
925 | unsigned char p; | |
1da177e4 LT |
926 | |
927 | if (resolution == 0 || resolution > 200) | |
928 | resolution = 200; | |
929 | ||
e38de678 HD |
930 | p = params[resolution / 50]; |
931 | ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES); | |
932 | psmouse->resolution = 25 << p; | |
1da177e4 LT |
933 | } |
934 | ||
935 | /* | |
936 | * Here we set the mouse report rate. | |
937 | */ | |
938 | ||
939 | static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate) | |
940 | { | |
e38de678 HD |
941 | static const unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 }; |
942 | unsigned char r; | |
1da177e4 LT |
943 | int i = 0; |
944 | ||
945 | while (rates[i] > rate) i++; | |
e38de678 HD |
946 | r = rates[i]; |
947 | ps2_command(&psmouse->ps2dev, &r, PSMOUSE_CMD_SETRATE); | |
948 | psmouse->rate = r; | |
1da177e4 LT |
949 | } |
950 | ||
951 | /* | |
952 | * psmouse_initialize() initializes the mouse to a sane state. | |
953 | */ | |
954 | ||
955 | static void psmouse_initialize(struct psmouse *psmouse) | |
956 | { | |
1da177e4 LT |
957 | /* |
958 | * We set the mouse report rate, resolution and scaling. | |
959 | */ | |
960 | ||
961 | if (psmouse_max_proto != PSMOUSE_PS2) { | |
962 | psmouse->set_rate(psmouse, psmouse->rate); | |
963 | psmouse->set_resolution(psmouse, psmouse->resolution); | |
964 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
965 | } | |
966 | } | |
967 | ||
1da177e4 LT |
968 | /* |
969 | * psmouse_activate() enables the mouse so that we get motion reports from it. | |
970 | */ | |
971 | ||
972 | static void psmouse_activate(struct psmouse *psmouse) | |
973 | { | |
974 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE)) | |
975 | printk(KERN_WARNING "psmouse.c: Failed to enable mouse on %s\n", | |
976 | psmouse->ps2dev.serio->phys); | |
977 | ||
978 | psmouse_set_state(psmouse, PSMOUSE_ACTIVATED); | |
979 | } | |
980 | ||
981 | ||
982 | /* | |
983 | * psmouse_deactivate() puts the mouse into poll mode so that we don't get motion | |
c03983ac | 984 | * reports from it unless we explicitly request it. |
1da177e4 LT |
985 | */ |
986 | ||
987 | static void psmouse_deactivate(struct psmouse *psmouse) | |
988 | { | |
989 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE)) | |
990 | printk(KERN_WARNING "psmouse.c: Failed to deactivate mouse on %s\n", | |
991 | psmouse->ps2dev.serio->phys); | |
992 | ||
993 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
994 | } | |
995 | ||
f0d5c6f4 DT |
996 | /* |
997 | * psmouse_poll() - default poll hanlder. Everyone except for ALPS uses it. | |
998 | */ | |
999 | ||
1000 | static int psmouse_poll(struct psmouse *psmouse) | |
1001 | { | |
1002 | return ps2_command(&psmouse->ps2dev, psmouse->packet, | |
1003 | PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)); | |
1004 | } | |
1005 | ||
1006 | ||
1007 | /* | |
1008 | * psmouse_resync() attempts to re-validate current protocol. | |
1009 | */ | |
1010 | ||
c4028958 | 1011 | static void psmouse_resync(struct work_struct *work) |
f0d5c6f4 | 1012 | { |
c4028958 | 1013 | struct psmouse *parent = NULL, *psmouse = |
8bf020ee | 1014 | container_of(work, struct psmouse, resync_work.work); |
f0d5c6f4 DT |
1015 | struct serio *serio = psmouse->ps2dev.serio; |
1016 | psmouse_ret_t rc = PSMOUSE_GOOD_DATA; | |
b7802c5c | 1017 | bool failed = false, enabled = false; |
f0d5c6f4 DT |
1018 | int i; |
1019 | ||
c14471dc | 1020 | mutex_lock(&psmouse_mutex); |
f0d5c6f4 DT |
1021 | |
1022 | if (psmouse->state != PSMOUSE_RESYNCING) | |
1023 | goto out; | |
1024 | ||
1025 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1026 | parent = serio_get_drvdata(serio->parent); | |
1027 | psmouse_deactivate(parent); | |
1028 | } | |
1029 | ||
1030 | /* | |
1031 | * Some mice don't ACK commands sent while they are in the middle of | |
1032 | * transmitting motion packet. To avoid delay we use ps2_sendbyte() | |
1033 | * instead of ps2_command() which would wait for 200ms for an ACK | |
1034 | * that may never come. | |
1035 | * As an additional quirk ALPS touchpads may not only forget to ACK | |
1036 | * disable command but will stop reporting taps, so if we see that | |
1037 | * mouse at least once ACKs disable we will do full reconnect if ACK | |
1038 | * is missing. | |
1039 | */ | |
1040 | psmouse->num_resyncs++; | |
1041 | ||
1042 | if (ps2_sendbyte(&psmouse->ps2dev, PSMOUSE_CMD_DISABLE, 20)) { | |
1043 | if (psmouse->num_resyncs < 3 || psmouse->acks_disable_command) | |
b7802c5c | 1044 | failed = true; |
f0d5c6f4 | 1045 | } else |
b7802c5c | 1046 | psmouse->acks_disable_command = true; |
f0d5c6f4 DT |
1047 | |
1048 | /* | |
1049 | * Poll the mouse. If it was reset the packet will be shorter than | |
1050 | * psmouse->pktsize and ps2_command will fail. We do not expect and | |
1051 | * do not handle scenario when mouse "upgrades" its protocol while | |
1052 | * disconnected since it would require additional delay. If we ever | |
1053 | * see a mouse that does it we'll adjust the code. | |
1054 | */ | |
1055 | if (!failed) { | |
1056 | if (psmouse->poll(psmouse)) | |
b7802c5c | 1057 | failed = true; |
f0d5c6f4 DT |
1058 | else { |
1059 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
1060 | for (i = 0; i < psmouse->pktsize; i++) { | |
1061 | psmouse->pktcnt++; | |
7d12e780 | 1062 | rc = psmouse->protocol_handler(psmouse); |
f0d5c6f4 DT |
1063 | if (rc != PSMOUSE_GOOD_DATA) |
1064 | break; | |
1065 | } | |
1066 | if (rc != PSMOUSE_FULL_PACKET) | |
b7802c5c | 1067 | failed = true; |
f0d5c6f4 DT |
1068 | psmouse_set_state(psmouse, PSMOUSE_RESYNCING); |
1069 | } | |
1070 | } | |
1071 | /* | |
1072 | * Now try to enable mouse. We try to do that even if poll failed and also | |
1073 | * repeat our attempts 5 times, otherwise we may be left out with disabled | |
1074 | * mouse. | |
1075 | */ | |
1076 | for (i = 0; i < 5; i++) { | |
1077 | if (!ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { | |
b7802c5c | 1078 | enabled = true; |
f0d5c6f4 DT |
1079 | break; |
1080 | } | |
1081 | msleep(200); | |
1082 | } | |
1083 | ||
1084 | if (!enabled) { | |
1085 | printk(KERN_WARNING "psmouse.c: failed to re-enable mouse on %s\n", | |
1086 | psmouse->ps2dev.serio->phys); | |
b7802c5c | 1087 | failed = true; |
f0d5c6f4 DT |
1088 | } |
1089 | ||
1090 | if (failed) { | |
1091 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
1092 | printk(KERN_INFO "psmouse.c: resync failed, issuing reconnect request\n"); | |
1093 | serio_reconnect(serio); | |
1094 | } else | |
1095 | psmouse_set_state(psmouse, PSMOUSE_ACTIVATED); | |
1096 | ||
1097 | if (parent) | |
1098 | psmouse_activate(parent); | |
1099 | out: | |
c14471dc | 1100 | mutex_unlock(&psmouse_mutex); |
f0d5c6f4 | 1101 | } |
1da177e4 LT |
1102 | |
1103 | /* | |
1104 | * psmouse_cleanup() resets the mouse into power-on state. | |
1105 | */ | |
1106 | ||
1107 | static void psmouse_cleanup(struct serio *serio) | |
1108 | { | |
1109 | struct psmouse *psmouse = serio_get_drvdata(serio); | |
a1cec061 DT |
1110 | struct psmouse *parent = NULL; |
1111 | ||
1112 | mutex_lock(&psmouse_mutex); | |
1113 | ||
1114 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1115 | parent = serio_get_drvdata(serio->parent); | |
1116 | psmouse_deactivate(parent); | |
1117 | } | |
1118 | ||
1119 | psmouse_deactivate(psmouse); | |
1120 | ||
1121 | if (psmouse->cleanup) | |
1122 | psmouse->cleanup(psmouse); | |
1da177e4 LT |
1123 | |
1124 | psmouse_reset(psmouse); | |
a1cec061 DT |
1125 | |
1126 | /* | |
1127 | * Some boxes, such as HP nx7400, get terribly confused if mouse | |
1128 | * is not fully enabled before suspending/shutting down. | |
1129 | */ | |
1130 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE); | |
1131 | ||
1132 | if (parent) { | |
1133 | if (parent->pt_deactivate) | |
1134 | parent->pt_deactivate(parent); | |
1135 | ||
1136 | psmouse_activate(parent); | |
1137 | } | |
1138 | ||
1139 | mutex_unlock(&psmouse_mutex); | |
1da177e4 LT |
1140 | } |
1141 | ||
1142 | /* | |
1143 | * psmouse_disconnect() closes and frees. | |
1144 | */ | |
1145 | ||
1146 | static void psmouse_disconnect(struct serio *serio) | |
1147 | { | |
04df1925 DT |
1148 | struct psmouse *psmouse, *parent = NULL; |
1149 | ||
1150 | psmouse = serio_get_drvdata(serio); | |
1da177e4 | 1151 | |
cfe9e888 | 1152 | sysfs_remove_group(&serio->dev.kobj, &psmouse_attribute_group); |
1da177e4 | 1153 | |
c14471dc | 1154 | mutex_lock(&psmouse_mutex); |
04df1925 | 1155 | |
1da177e4 LT |
1156 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); |
1157 | ||
f0d5c6f4 | 1158 | /* make sure we don't have a resync in progress */ |
c14471dc | 1159 | mutex_unlock(&psmouse_mutex); |
f0d5c6f4 | 1160 | flush_workqueue(kpsmoused_wq); |
c14471dc | 1161 | mutex_lock(&psmouse_mutex); |
f0d5c6f4 | 1162 | |
1da177e4 LT |
1163 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { |
1164 | parent = serio_get_drvdata(serio->parent); | |
04df1925 | 1165 | psmouse_deactivate(parent); |
1da177e4 LT |
1166 | } |
1167 | ||
1168 | if (psmouse->disconnect) | |
1169 | psmouse->disconnect(psmouse); | |
1170 | ||
04df1925 DT |
1171 | if (parent && parent->pt_deactivate) |
1172 | parent->pt_deactivate(parent); | |
1173 | ||
1da177e4 LT |
1174 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); |
1175 | ||
1da177e4 LT |
1176 | serio_close(serio); |
1177 | serio_set_drvdata(serio, NULL); | |
2e5b636b | 1178 | input_unregister_device(psmouse->dev); |
1da177e4 | 1179 | kfree(psmouse); |
04df1925 DT |
1180 | |
1181 | if (parent) | |
1182 | psmouse_activate(parent); | |
1183 | ||
c14471dc | 1184 | mutex_unlock(&psmouse_mutex); |
1da177e4 LT |
1185 | } |
1186 | ||
e38de678 | 1187 | static int psmouse_switch_protocol(struct psmouse *psmouse, const struct psmouse_protocol *proto) |
dbf4ccd6 | 1188 | { |
2e5b636b | 1189 | struct input_dev *input_dev = psmouse->dev; |
dbf4ccd6 | 1190 | |
28aa7f1c | 1191 | input_dev->dev.parent = &psmouse->ps2dev.serio->dev; |
dbf4ccd6 | 1192 | |
7b19ada2 JS |
1193 | input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); |
1194 | input_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) | | |
1195 | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); | |
1196 | input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); | |
dbf4ccd6 DT |
1197 | |
1198 | psmouse->set_rate = psmouse_set_rate; | |
1199 | psmouse->set_resolution = psmouse_set_resolution; | |
f0d5c6f4 | 1200 | psmouse->poll = psmouse_poll; |
dbf4ccd6 DT |
1201 | psmouse->protocol_handler = psmouse_process_byte; |
1202 | psmouse->pktsize = 3; | |
1203 | ||
1204 | if (proto && (proto->detect || proto->init)) { | |
1205 | if (proto->detect && proto->detect(psmouse, 1) < 0) | |
1206 | return -1; | |
1207 | ||
1208 | if (proto->init && proto->init(psmouse) < 0) | |
1209 | return -1; | |
1210 | ||
1211 | psmouse->type = proto->type; | |
1212 | } | |
1213 | else | |
b7802c5c DT |
1214 | psmouse->type = psmouse_extensions(psmouse, |
1215 | psmouse_max_proto, true); | |
dbf4ccd6 | 1216 | |
f0d5c6f4 DT |
1217 | /* |
1218 | * If mouse's packet size is 3 there is no point in polling the | |
1219 | * device in hopes to detect protocol reset - we won't get less | |
1220 | * than 3 bytes response anyhow. | |
1221 | */ | |
1222 | if (psmouse->pktsize == 3) | |
1223 | psmouse->resync_time = 0; | |
1224 | ||
1225 | /* | |
1226 | * Some smart KVMs fake response to POLL command returning just | |
1227 | * 3 bytes and messing up our resync logic, so if initial poll | |
1228 | * fails we won't try polling the device anymore. Hopefully | |
1229 | * such KVM will maintain initially selected protocol. | |
1230 | */ | |
1231 | if (psmouse->resync_time && psmouse->poll(psmouse)) | |
1232 | psmouse->resync_time = 0; | |
1233 | ||
08ffce45 DT |
1234 | snprintf(psmouse->devname, sizeof(psmouse->devname), "%s %s %s", |
1235 | psmouse_protocol_by_type(psmouse->type)->name, psmouse->vendor, psmouse->name); | |
dbf4ccd6 | 1236 | |
2e5b636b DT |
1237 | input_dev->name = psmouse->devname; |
1238 | input_dev->phys = psmouse->phys; | |
1239 | input_dev->id.bustype = BUS_I8042; | |
1240 | input_dev->id.vendor = 0x0002; | |
1241 | input_dev->id.product = psmouse->type; | |
1242 | input_dev->id.version = psmouse->model; | |
dbf4ccd6 DT |
1243 | |
1244 | return 0; | |
1245 | } | |
1246 | ||
1da177e4 LT |
1247 | /* |
1248 | * psmouse_connect() is a callback from the serio module when | |
1249 | * an unhandled serio port is found. | |
1250 | */ | |
1251 | static int psmouse_connect(struct serio *serio, struct serio_driver *drv) | |
1252 | { | |
1253 | struct psmouse *psmouse, *parent = NULL; | |
2e5b636b | 1254 | struct input_dev *input_dev; |
72155615 | 1255 | int retval = 0, error = -ENOMEM; |
1da177e4 | 1256 | |
c14471dc | 1257 | mutex_lock(&psmouse_mutex); |
04df1925 | 1258 | |
1da177e4 LT |
1259 | /* |
1260 | * If this is a pass-through port deactivate parent so the device | |
1261 | * connected to this port can be successfully identified | |
1262 | */ | |
1263 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1264 | parent = serio_get_drvdata(serio->parent); | |
1265 | psmouse_deactivate(parent); | |
1266 | } | |
1267 | ||
2e5b636b DT |
1268 | psmouse = kzalloc(sizeof(struct psmouse), GFP_KERNEL); |
1269 | input_dev = input_allocate_device(); | |
1270 | if (!psmouse || !input_dev) | |
72155615 | 1271 | goto err_free; |
1da177e4 | 1272 | |
1da177e4 | 1273 | ps2_init(&psmouse->ps2dev, serio); |
8bf020ee | 1274 | INIT_DELAYED_WORK(&psmouse->resync_work, psmouse_resync); |
2e5b636b | 1275 | psmouse->dev = input_dev; |
08ffce45 | 1276 | snprintf(psmouse->phys, sizeof(psmouse->phys), "%s/input0", serio->phys); |
dbf4ccd6 | 1277 | |
1da177e4 LT |
1278 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); |
1279 | ||
1280 | serio_set_drvdata(serio, psmouse); | |
1281 | ||
72155615 DT |
1282 | error = serio_open(serio, drv); |
1283 | if (error) | |
1284 | goto err_clear_drvdata; | |
1da177e4 LT |
1285 | |
1286 | if (psmouse_probe(psmouse) < 0) { | |
72155615 DT |
1287 | error = -ENODEV; |
1288 | goto err_close_serio; | |
1da177e4 LT |
1289 | } |
1290 | ||
1291 | psmouse->rate = psmouse_rate; | |
1292 | psmouse->resolution = psmouse_resolution; | |
1293 | psmouse->resetafter = psmouse_resetafter; | |
f0d5c6f4 | 1294 | psmouse->resync_time = parent ? 0 : psmouse_resync_time; |
1da177e4 | 1295 | psmouse->smartscroll = psmouse_smartscroll; |
1da177e4 | 1296 | |
dbf4ccd6 | 1297 | psmouse_switch_protocol(psmouse, NULL); |
1da177e4 | 1298 | |
1da177e4 | 1299 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); |
1da177e4 LT |
1300 | psmouse_initialize(psmouse); |
1301 | ||
72155615 DT |
1302 | error = input_register_device(psmouse->dev); |
1303 | if (error) | |
1304 | goto err_protocol_disconnect; | |
2e5b636b | 1305 | |
1da177e4 LT |
1306 | if (parent && parent->pt_activate) |
1307 | parent->pt_activate(parent); | |
1308 | ||
72155615 DT |
1309 | error = sysfs_create_group(&serio->dev.kobj, &psmouse_attribute_group); |
1310 | if (error) | |
1311 | goto err_pt_deactivate; | |
1da177e4 LT |
1312 | |
1313 | psmouse_activate(psmouse); | |
1314 | ||
72155615 | 1315 | out: |
04df1925 | 1316 | /* If this is a pass-through port the parent needs to be re-activated */ |
1da177e4 LT |
1317 | if (parent) |
1318 | psmouse_activate(parent); | |
1319 | ||
c14471dc | 1320 | mutex_unlock(&psmouse_mutex); |
1da177e4 | 1321 | return retval; |
72155615 DT |
1322 | |
1323 | err_pt_deactivate: | |
1324 | if (parent && parent->pt_deactivate) | |
1325 | parent->pt_deactivate(parent); | |
746b31a9 AS |
1326 | input_unregister_device(psmouse->dev); |
1327 | input_dev = NULL; /* so we don't try to free it below */ | |
72155615 DT |
1328 | err_protocol_disconnect: |
1329 | if (psmouse->disconnect) | |
1330 | psmouse->disconnect(psmouse); | |
1331 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
1332 | err_close_serio: | |
1333 | serio_close(serio); | |
1334 | err_clear_drvdata: | |
1335 | serio_set_drvdata(serio, NULL); | |
1336 | err_free: | |
1337 | input_free_device(input_dev); | |
1338 | kfree(psmouse); | |
1339 | ||
1340 | retval = error; | |
1341 | goto out; | |
1da177e4 LT |
1342 | } |
1343 | ||
1344 | ||
1345 | static int psmouse_reconnect(struct serio *serio) | |
1346 | { | |
1347 | struct psmouse *psmouse = serio_get_drvdata(serio); | |
1348 | struct psmouse *parent = NULL; | |
1349 | struct serio_driver *drv = serio->drv; | |
1350 | int rc = -1; | |
1351 | ||
1352 | if (!drv || !psmouse) { | |
1353 | printk(KERN_DEBUG "psmouse: reconnect request, but serio is disconnected, ignoring...\n"); | |
1354 | return -1; | |
1355 | } | |
1356 | ||
c14471dc | 1357 | mutex_lock(&psmouse_mutex); |
04df1925 | 1358 | |
1da177e4 LT |
1359 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { |
1360 | parent = serio_get_drvdata(serio->parent); | |
1361 | psmouse_deactivate(parent); | |
1362 | } | |
1363 | ||
1364 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); | |
1365 | ||
1366 | if (psmouse->reconnect) { | |
1367 | if (psmouse->reconnect(psmouse)) | |
1368 | goto out; | |
1369 | } else if (psmouse_probe(psmouse) < 0 || | |
b7802c5c DT |
1370 | psmouse->type != psmouse_extensions(psmouse, |
1371 | psmouse_max_proto, false)) { | |
1da177e4 | 1372 | goto out; |
b7802c5c | 1373 | } |
1da177e4 LT |
1374 | |
1375 | /* ok, the device type (and capabilities) match the old one, | |
1376 | * we can continue using it, complete intialization | |
1377 | */ | |
1378 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
1379 | ||
1380 | psmouse_initialize(psmouse); | |
1381 | ||
1382 | if (parent && parent->pt_activate) | |
1383 | parent->pt_activate(parent); | |
1384 | ||
1385 | psmouse_activate(psmouse); | |
1386 | rc = 0; | |
1387 | ||
1388 | out: | |
1389 | /* If this is a pass-through port the parent waits to be activated */ | |
1390 | if (parent) | |
1391 | psmouse_activate(parent); | |
1392 | ||
c14471dc | 1393 | mutex_unlock(&psmouse_mutex); |
1da177e4 LT |
1394 | return rc; |
1395 | } | |
1396 | ||
1397 | static struct serio_device_id psmouse_serio_ids[] = { | |
1398 | { | |
1399 | .type = SERIO_8042, | |
1400 | .proto = SERIO_ANY, | |
1401 | .id = SERIO_ANY, | |
1402 | .extra = SERIO_ANY, | |
1403 | }, | |
1404 | { | |
1405 | .type = SERIO_PS_PSTHRU, | |
1406 | .proto = SERIO_ANY, | |
1407 | .id = SERIO_ANY, | |
1408 | .extra = SERIO_ANY, | |
1409 | }, | |
1410 | { 0 } | |
1411 | }; | |
1412 | ||
1413 | MODULE_DEVICE_TABLE(serio, psmouse_serio_ids); | |
1414 | ||
1415 | static struct serio_driver psmouse_drv = { | |
1416 | .driver = { | |
1417 | .name = "psmouse", | |
1418 | }, | |
1419 | .description = DRIVER_DESC, | |
1420 | .id_table = psmouse_serio_ids, | |
1421 | .interrupt = psmouse_interrupt, | |
1422 | .connect = psmouse_connect, | |
1423 | .reconnect = psmouse_reconnect, | |
1424 | .disconnect = psmouse_disconnect, | |
1425 | .cleanup = psmouse_cleanup, | |
1426 | }; | |
1427 | ||
cfe9e888 DT |
1428 | ssize_t psmouse_attr_show_helper(struct device *dev, struct device_attribute *devattr, |
1429 | char *buf) | |
1da177e4 LT |
1430 | { |
1431 | struct serio *serio = to_serio_port(dev); | |
cfe9e888 DT |
1432 | struct psmouse_attribute *attr = to_psmouse_attr(devattr); |
1433 | struct psmouse *psmouse; | |
1da177e4 LT |
1434 | int retval; |
1435 | ||
1436 | retval = serio_pin_driver(serio); | |
1437 | if (retval) | |
1438 | return retval; | |
1439 | ||
1440 | if (serio->drv != &psmouse_drv) { | |
1441 | retval = -ENODEV; | |
1442 | goto out; | |
1443 | } | |
1444 | ||
cfe9e888 DT |
1445 | psmouse = serio_get_drvdata(serio); |
1446 | ||
1447 | retval = attr->show(psmouse, attr->data, buf); | |
1da177e4 LT |
1448 | |
1449 | out: | |
1450 | serio_unpin_driver(serio); | |
1451 | return retval; | |
1452 | } | |
1453 | ||
cfe9e888 DT |
1454 | ssize_t psmouse_attr_set_helper(struct device *dev, struct device_attribute *devattr, |
1455 | const char *buf, size_t count) | |
1da177e4 LT |
1456 | { |
1457 | struct serio *serio = to_serio_port(dev); | |
cfe9e888 DT |
1458 | struct psmouse_attribute *attr = to_psmouse_attr(devattr); |
1459 | struct psmouse *psmouse, *parent = NULL; | |
1da177e4 LT |
1460 | int retval; |
1461 | ||
1462 | retval = serio_pin_driver(serio); | |
1463 | if (retval) | |
1464 | return retval; | |
1465 | ||
1466 | if (serio->drv != &psmouse_drv) { | |
1467 | retval = -ENODEV; | |
04df1925 DT |
1468 | goto out_unpin; |
1469 | } | |
1470 | ||
c14471dc | 1471 | retval = mutex_lock_interruptible(&psmouse_mutex); |
04df1925 DT |
1472 | if (retval) |
1473 | goto out_unpin; | |
1474 | ||
cfe9e888 DT |
1475 | psmouse = serio_get_drvdata(serio); |
1476 | ||
68d48221 AS |
1477 | if (attr->protect) { |
1478 | if (psmouse->state == PSMOUSE_IGNORE) { | |
1479 | retval = -ENODEV; | |
1480 | goto out_unlock; | |
1481 | } | |
1da177e4 | 1482 | |
68d48221 AS |
1483 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { |
1484 | parent = serio_get_drvdata(serio->parent); | |
1485 | psmouse_deactivate(parent); | |
1486 | } | |
dbf4ccd6 | 1487 | |
68d48221 AS |
1488 | psmouse_deactivate(psmouse); |
1489 | } | |
1da177e4 | 1490 | |
cfe9e888 | 1491 | retval = attr->set(psmouse, attr->data, buf, count); |
1da177e4 | 1492 | |
68d48221 AS |
1493 | if (attr->protect) { |
1494 | if (retval != -ENODEV) | |
1495 | psmouse_activate(psmouse); | |
dbf4ccd6 | 1496 | |
68d48221 AS |
1497 | if (parent) |
1498 | psmouse_activate(parent); | |
1499 | } | |
1da177e4 | 1500 | |
c14471dc IM |
1501 | out_unlock: |
1502 | mutex_unlock(&psmouse_mutex); | |
04df1925 | 1503 | out_unpin: |
1da177e4 LT |
1504 | serio_unpin_driver(serio); |
1505 | return retval; | |
1506 | } | |
1507 | ||
cfe9e888 DT |
1508 | static ssize_t psmouse_show_int_attr(struct psmouse *psmouse, void *offset, char *buf) |
1509 | { | |
eb5d5829 | 1510 | unsigned int *field = (unsigned int *)((char *)psmouse + (size_t)offset); |
cfe9e888 | 1511 | |
eb5d5829 | 1512 | return sprintf(buf, "%u\n", *field); |
cfe9e888 DT |
1513 | } |
1514 | ||
1515 | static ssize_t psmouse_set_int_attr(struct psmouse *psmouse, void *offset, const char *buf, size_t count) | |
1516 | { | |
eb5d5829 | 1517 | unsigned int *field = (unsigned int *)((char *)psmouse + (size_t)offset); |
cfe9e888 | 1518 | unsigned long value; |
cfe9e888 | 1519 | |
160f1fef | 1520 | if (strict_strtoul(buf, 10, &value)) |
cfe9e888 DT |
1521 | return -EINVAL; |
1522 | ||
eb5d5829 SV |
1523 | if ((unsigned int)value != value) |
1524 | return -EINVAL; | |
1525 | ||
cfe9e888 DT |
1526 | *field = value; |
1527 | ||
1528 | return count; | |
1529 | } | |
1530 | ||
1531 | static ssize_t psmouse_attr_show_protocol(struct psmouse *psmouse, void *data, char *buf) | |
dbf4ccd6 DT |
1532 | { |
1533 | return sprintf(buf, "%s\n", psmouse_protocol_by_type(psmouse->type)->name); | |
1534 | } | |
1535 | ||
cfe9e888 | 1536 | static ssize_t psmouse_attr_set_protocol(struct psmouse *psmouse, void *data, const char *buf, size_t count) |
dbf4ccd6 DT |
1537 | { |
1538 | struct serio *serio = psmouse->ps2dev.serio; | |
1539 | struct psmouse *parent = NULL; | |
72155615 DT |
1540 | struct input_dev *old_dev, *new_dev; |
1541 | const struct psmouse_protocol *proto, *old_proto; | |
1542 | int error; | |
dbf4ccd6 DT |
1543 | int retry = 0; |
1544 | ||
72155615 DT |
1545 | proto = psmouse_protocol_by_name(buf, count); |
1546 | if (!proto) | |
dbf4ccd6 DT |
1547 | return -EINVAL; |
1548 | ||
1549 | if (psmouse->type == proto->type) | |
1550 | return count; | |
1551 | ||
72155615 DT |
1552 | new_dev = input_allocate_device(); |
1553 | if (!new_dev) | |
2e5b636b DT |
1554 | return -ENOMEM; |
1555 | ||
dbf4ccd6 DT |
1556 | while (serio->child) { |
1557 | if (++retry > 3) { | |
b7802c5c DT |
1558 | printk(KERN_WARNING |
1559 | "psmouse: failed to destroy child port, " | |
1560 | "protocol change aborted.\n"); | |
2e5b636b | 1561 | input_free_device(new_dev); |
dbf4ccd6 DT |
1562 | return -EIO; |
1563 | } | |
1564 | ||
c14471dc | 1565 | mutex_unlock(&psmouse_mutex); |
dbf4ccd6 DT |
1566 | serio_unpin_driver(serio); |
1567 | serio_unregister_child_port(serio); | |
1568 | serio_pin_driver_uninterruptible(serio); | |
c14471dc | 1569 | mutex_lock(&psmouse_mutex); |
dbf4ccd6 | 1570 | |
2e5b636b DT |
1571 | if (serio->drv != &psmouse_drv) { |
1572 | input_free_device(new_dev); | |
dbf4ccd6 | 1573 | return -ENODEV; |
2e5b636b | 1574 | } |
dbf4ccd6 | 1575 | |
2e5b636b DT |
1576 | if (psmouse->type == proto->type) { |
1577 | input_free_device(new_dev); | |
dbf4ccd6 | 1578 | return count; /* switched by other thread */ |
2e5b636b | 1579 | } |
dbf4ccd6 DT |
1580 | } |
1581 | ||
1582 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1583 | parent = serio_get_drvdata(serio->parent); | |
1584 | if (parent->pt_deactivate) | |
1585 | parent->pt_deactivate(parent); | |
1586 | } | |
1587 | ||
72155615 DT |
1588 | old_dev = psmouse->dev; |
1589 | old_proto = psmouse_protocol_by_type(psmouse->type); | |
1590 | ||
dbf4ccd6 DT |
1591 | if (psmouse->disconnect) |
1592 | psmouse->disconnect(psmouse); | |
1593 | ||
1594 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
dbf4ccd6 | 1595 | |
2e5b636b | 1596 | psmouse->dev = new_dev; |
dbf4ccd6 DT |
1597 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); |
1598 | ||
1599 | if (psmouse_switch_protocol(psmouse, proto) < 0) { | |
1600 | psmouse_reset(psmouse); | |
1601 | /* default to PSMOUSE_PS2 */ | |
1602 | psmouse_switch_protocol(psmouse, &psmouse_protocols[0]); | |
1603 | } | |
1604 | ||
1605 | psmouse_initialize(psmouse); | |
1606 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
1607 | ||
72155615 DT |
1608 | error = input_register_device(psmouse->dev); |
1609 | if (error) { | |
1610 | if (psmouse->disconnect) | |
1611 | psmouse->disconnect(psmouse); | |
1612 | ||
1613 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
1614 | input_free_device(new_dev); | |
1615 | psmouse->dev = old_dev; | |
1616 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); | |
1617 | psmouse_switch_protocol(psmouse, old_proto); | |
1618 | psmouse_initialize(psmouse); | |
1619 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
1620 | ||
1621 | return error; | |
1622 | } | |
1623 | ||
1624 | input_unregister_device(old_dev); | |
dbf4ccd6 DT |
1625 | |
1626 | if (parent && parent->pt_activate) | |
1627 | parent->pt_activate(parent); | |
1628 | ||
1629 | return count; | |
1630 | } | |
1631 | ||
cfe9e888 | 1632 | static ssize_t psmouse_attr_set_rate(struct psmouse *psmouse, void *data, const char *buf, size_t count) |
1da177e4 LT |
1633 | { |
1634 | unsigned long value; | |
1da177e4 | 1635 | |
160f1fef | 1636 | if (strict_strtoul(buf, 10, &value)) |
1da177e4 LT |
1637 | return -EINVAL; |
1638 | ||
1639 | psmouse->set_rate(psmouse, value); | |
1640 | return count; | |
1641 | } | |
1642 | ||
cfe9e888 | 1643 | static ssize_t psmouse_attr_set_resolution(struct psmouse *psmouse, void *data, const char *buf, size_t count) |
1da177e4 LT |
1644 | { |
1645 | unsigned long value; | |
1da177e4 | 1646 | |
160f1fef | 1647 | if (strict_strtoul(buf, 10, &value)) |
1da177e4 LT |
1648 | return -EINVAL; |
1649 | ||
1650 | psmouse->set_resolution(psmouse, value); | |
1651 | return count; | |
1652 | } | |
1653 | ||
1da177e4 LT |
1654 | |
1655 | static int psmouse_set_maxproto(const char *val, struct kernel_param *kp) | |
1656 | { | |
e38de678 | 1657 | const struct psmouse_protocol *proto; |
1da177e4 LT |
1658 | |
1659 | if (!val) | |
1660 | return -EINVAL; | |
1661 | ||
dbf4ccd6 | 1662 | proto = psmouse_protocol_by_name(val, strlen(val)); |
1da177e4 | 1663 | |
dbf4ccd6 DT |
1664 | if (!proto || !proto->maxproto) |
1665 | return -EINVAL; | |
1da177e4 | 1666 | |
dbf4ccd6 | 1667 | *((unsigned int *)kp->arg) = proto->type; |
1da177e4 | 1668 | |
541e316a | 1669 | return 0; |
1da177e4 LT |
1670 | } |
1671 | ||
1672 | static int psmouse_get_maxproto(char *buffer, struct kernel_param *kp) | |
1673 | { | |
dbf4ccd6 DT |
1674 | int type = *((unsigned int *)kp->arg); |
1675 | ||
1676 | return sprintf(buffer, "%s\n", psmouse_protocol_by_type(type)->name); | |
1da177e4 LT |
1677 | } |
1678 | ||
1679 | static int __init psmouse_init(void) | |
1680 | { | |
153a9df0 AM |
1681 | int err; |
1682 | ||
f0d5c6f4 DT |
1683 | kpsmoused_wq = create_singlethread_workqueue("kpsmoused"); |
1684 | if (!kpsmoused_wq) { | |
1685 | printk(KERN_ERR "psmouse: failed to create kpsmoused workqueue\n"); | |
1686 | return -ENOMEM; | |
1687 | } | |
1688 | ||
153a9df0 AM |
1689 | err = serio_register_driver(&psmouse_drv); |
1690 | if (err) | |
1691 | destroy_workqueue(kpsmoused_wq); | |
f0d5c6f4 | 1692 | |
153a9df0 | 1693 | return err; |
1da177e4 LT |
1694 | } |
1695 | ||
1696 | static void __exit psmouse_exit(void) | |
1697 | { | |
1698 | serio_unregister_driver(&psmouse_drv); | |
f0d5c6f4 | 1699 | destroy_workqueue(kpsmoused_wq); |
1da177e4 LT |
1700 | } |
1701 | ||
1702 | module_init(psmouse_init); | |
1703 | module_exit(psmouse_exit); |