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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * PS/2 mouse driver | |
3 | * | |
4 | * Copyright (c) 1999-2002 Vojtech Pavlik | |
5 | * Copyright (c) 2003-2004 Dmitry Torokhov | |
6 | */ | |
7 | ||
8 | /* | |
9 | * This program is free software; you can redistribute it and/or modify it | |
10 | * under the terms of the GNU General Public License version 2 as published by | |
11 | * the Free Software Foundation. | |
12 | */ | |
13 | ||
b5d21704 DT |
14 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
15 | #define psmouse_fmt(fmt) fmt | |
16 | ||
1da177e4 LT |
17 | #include <linux/delay.h> |
18 | #include <linux/module.h> | |
1da177e4 LT |
19 | #include <linux/slab.h> |
20 | #include <linux/interrupt.h> | |
21 | #include <linux/input.h> | |
22 | #include <linux/serio.h> | |
23 | #include <linux/init.h> | |
24 | #include <linux/libps2.h> | |
c14471dc IM |
25 | #include <linux/mutex.h> |
26 | ||
1da177e4 LT |
27 | #include "psmouse.h" |
28 | #include "synaptics.h" | |
29 | #include "logips2pp.h" | |
30 | #include "alps.h" | |
df08ef27 | 31 | #include "hgpk.h" |
02d7f589 | 32 | #include "lifebook.h" |
541e316a | 33 | #include "trackpoint.h" |
24bf10ab | 34 | #include "touchkit_ps2.h" |
2a0bd75e | 35 | #include "elantech.h" |
fc69f4a6 | 36 | #include "sentelic.h" |
0799a924 | 37 | #include "cypress_ps2.h" |
3ace3686 | 38 | #include "focaltech.h" |
1da177e4 LT |
39 | |
40 | #define DRIVER_DESC "PS/2 mouse driver" | |
41 | ||
42 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>"); | |
43 | MODULE_DESCRIPTION(DRIVER_DESC); | |
44 | MODULE_LICENSE("GPL"); | |
45 | ||
dbf4ccd6 | 46 | static unsigned int psmouse_max_proto = PSMOUSE_AUTO; |
9bbb9e5a RR |
47 | static int psmouse_set_maxproto(const char *val, const struct kernel_param *); |
48 | static int psmouse_get_maxproto(char *buffer, const struct kernel_param *kp); | |
49 | static struct kernel_param_ops param_ops_proto_abbrev = { | |
50 | .set = psmouse_set_maxproto, | |
51 | .get = psmouse_get_maxproto, | |
52 | }; | |
1da177e4 | 53 | #define param_check_proto_abbrev(name, p) __param_check(name, p, unsigned int) |
1da177e4 | 54 | module_param_named(proto, psmouse_max_proto, proto_abbrev, 0644); |
dbf4ccd6 | 55 | MODULE_PARM_DESC(proto, "Highest protocol extension to probe (bare, imps, exps, any). Useful for KVM switches."); |
1da177e4 LT |
56 | |
57 | static unsigned int psmouse_resolution = 200; | |
58 | module_param_named(resolution, psmouse_resolution, uint, 0644); | |
59 | MODULE_PARM_DESC(resolution, "Resolution, in dpi."); | |
60 | ||
61 | static unsigned int psmouse_rate = 100; | |
62 | module_param_named(rate, psmouse_rate, uint, 0644); | |
63 | MODULE_PARM_DESC(rate, "Report rate, in reports per second."); | |
64 | ||
90ab5ee9 | 65 | static bool psmouse_smartscroll = 1; |
1da177e4 LT |
66 | module_param_named(smartscroll, psmouse_smartscroll, bool, 0644); |
67 | MODULE_PARM_DESC(smartscroll, "Logitech Smartscroll autorepeat, 1 = enabled (default), 0 = disabled."); | |
68 | ||
f0d5c6f4 | 69 | static unsigned int psmouse_resetafter = 5; |
1da177e4 LT |
70 | module_param_named(resetafter, psmouse_resetafter, uint, 0644); |
71 | MODULE_PARM_DESC(resetafter, "Reset device after so many bad packets (0 = never)."); | |
72 | ||
8bd0ee93 | 73 | static unsigned int psmouse_resync_time; |
f0d5c6f4 DT |
74 | module_param_named(resync_time, psmouse_resync_time, uint, 0644); |
75 | MODULE_PARM_DESC(resync_time, "How long can mouse stay idle before forcing resync (in seconds, 0 = never)."); | |
76 | ||
cfe9e888 DT |
77 | PSMOUSE_DEFINE_ATTR(protocol, S_IWUSR | S_IRUGO, |
78 | NULL, | |
79 | psmouse_attr_show_protocol, psmouse_attr_set_protocol); | |
80 | PSMOUSE_DEFINE_ATTR(rate, S_IWUSR | S_IRUGO, | |
81 | (void *) offsetof(struct psmouse, rate), | |
82 | psmouse_show_int_attr, psmouse_attr_set_rate); | |
83 | PSMOUSE_DEFINE_ATTR(resolution, S_IWUSR | S_IRUGO, | |
84 | (void *) offsetof(struct psmouse, resolution), | |
85 | psmouse_show_int_attr, psmouse_attr_set_resolution); | |
86 | PSMOUSE_DEFINE_ATTR(resetafter, S_IWUSR | S_IRUGO, | |
87 | (void *) offsetof(struct psmouse, resetafter), | |
88 | psmouse_show_int_attr, psmouse_set_int_attr); | |
f0d5c6f4 DT |
89 | PSMOUSE_DEFINE_ATTR(resync_time, S_IWUSR | S_IRUGO, |
90 | (void *) offsetof(struct psmouse, resync_time), | |
91 | psmouse_show_int_attr, psmouse_set_int_attr); | |
cfe9e888 DT |
92 | |
93 | static struct attribute *psmouse_attributes[] = { | |
94 | &psmouse_attr_protocol.dattr.attr, | |
95 | &psmouse_attr_rate.dattr.attr, | |
96 | &psmouse_attr_resolution.dattr.attr, | |
97 | &psmouse_attr_resetafter.dattr.attr, | |
f0d5c6f4 | 98 | &psmouse_attr_resync_time.dattr.attr, |
cfe9e888 DT |
99 | NULL |
100 | }; | |
101 | ||
102 | static struct attribute_group psmouse_attribute_group = { | |
103 | .attrs = psmouse_attributes, | |
104 | }; | |
1da177e4 | 105 | |
04df1925 | 106 | /* |
c14471dc | 107 | * psmouse_mutex protects all operations changing state of mouse |
04df1925 DT |
108 | * (connecting, disconnecting, changing rate or resolution via |
109 | * sysfs). We could use a per-device semaphore but since there | |
110 | * rarely more than one PS/2 mouse connected and since semaphore | |
111 | * is taken in "slow" paths it is not worth it. | |
112 | */ | |
c14471dc | 113 | static DEFINE_MUTEX(psmouse_mutex); |
04df1925 | 114 | |
f0d5c6f4 DT |
115 | static struct workqueue_struct *kpsmoused_wq; |
116 | ||
dbf4ccd6 DT |
117 | struct psmouse_protocol { |
118 | enum psmouse_type type; | |
b7802c5c | 119 | bool maxproto; |
6b9d363c | 120 | bool ignore_parity; /* Protocol should ignore parity errors from KBC */ |
e38de678 HD |
121 | const char *name; |
122 | const char *alias; | |
b7802c5c | 123 | int (*detect)(struct psmouse *, bool); |
dbf4ccd6 DT |
124 | int (*init)(struct psmouse *); |
125 | }; | |
1da177e4 LT |
126 | |
127 | /* | |
128 | * psmouse_process_byte() analyzes the PS/2 data stream and reports | |
129 | * relevant events to the input module once full packet has arrived. | |
130 | */ | |
131 | ||
7968a5dd | 132 | psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse) |
1da177e4 | 133 | { |
2e5b636b | 134 | struct input_dev *dev = psmouse->dev; |
1da177e4 LT |
135 | unsigned char *packet = psmouse->packet; |
136 | ||
137 | if (psmouse->pktcnt < psmouse->pktsize) | |
138 | return PSMOUSE_GOOD_DATA; | |
139 | ||
140 | /* | |
141 | * Full packet accumulated, process it | |
142 | */ | |
143 | ||
1da177e4 LT |
144 | /* |
145 | * Scroll wheel on IntelliMice, scroll buttons on NetMice | |
146 | */ | |
147 | ||
148 | if (psmouse->type == PSMOUSE_IMPS || psmouse->type == PSMOUSE_GENPS) | |
149 | input_report_rel(dev, REL_WHEEL, -(signed char) packet[3]); | |
150 | ||
151 | /* | |
152 | * Scroll wheel and buttons on IntelliMouse Explorer | |
153 | */ | |
154 | ||
155 | if (psmouse->type == PSMOUSE_IMEX) { | |
b0c9ad8e | 156 | switch (packet[3] & 0xC0) { |
a62f0d27 DT |
157 | case 0x80: /* vertical scroll on IntelliMouse Explorer 4.0 */ |
158 | input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31)); | |
159 | break; | |
160 | case 0x40: /* horizontal scroll on IntelliMouse Explorer 4.0 */ | |
161 | input_report_rel(dev, REL_HWHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31)); | |
162 | break; | |
163 | case 0x00: | |
164 | case 0xC0: | |
165 | input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 8) - (int) (packet[3] & 7)); | |
166 | input_report_key(dev, BTN_SIDE, (packet[3] >> 4) & 1); | |
167 | input_report_key(dev, BTN_EXTRA, (packet[3] >> 5) & 1); | |
168 | break; | |
b0c9ad8e | 169 | } |
1da177e4 LT |
170 | } |
171 | ||
172 | /* | |
173 | * Extra buttons on Genius NewNet 3D | |
174 | */ | |
175 | ||
176 | if (psmouse->type == PSMOUSE_GENPS) { | |
177 | input_report_key(dev, BTN_SIDE, (packet[0] >> 6) & 1); | |
178 | input_report_key(dev, BTN_EXTRA, (packet[0] >> 7) & 1); | |
179 | } | |
180 | ||
181 | /* | |
182 | * Extra button on ThinkingMouse | |
183 | */ | |
184 | if (psmouse->type == PSMOUSE_THINKPS) { | |
185 | input_report_key(dev, BTN_EXTRA, (packet[0] >> 3) & 1); | |
186 | /* Without this bit of weirdness moving up gives wildly high Y changes. */ | |
187 | packet[1] |= (packet[0] & 0x40) << 1; | |
188 | } | |
189 | ||
aea6a461 AR |
190 | /* |
191 | * Cortron PS2 Trackball reports SIDE button on the 4th bit of the first | |
192 | * byte. | |
193 | */ | |
194 | if (psmouse->type == PSMOUSE_CORTRON) { | |
195 | input_report_key(dev, BTN_SIDE, (packet[0] >> 3) & 1); | |
196 | packet[0] |= 0x08; | |
197 | } | |
198 | ||
1da177e4 LT |
199 | /* |
200 | * Generic PS/2 Mouse | |
201 | */ | |
202 | ||
203 | input_report_key(dev, BTN_LEFT, packet[0] & 1); | |
204 | input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1); | |
205 | input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1); | |
206 | ||
207 | input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0); | |
208 | input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0); | |
209 | ||
210 | input_sync(dev); | |
211 | ||
212 | return PSMOUSE_FULL_PACKET; | |
213 | } | |
214 | ||
8bf020ee AS |
215 | void psmouse_queue_work(struct psmouse *psmouse, struct delayed_work *work, |
216 | unsigned long delay) | |
217 | { | |
218 | queue_delayed_work(kpsmoused_wq, work, delay); | |
219 | } | |
220 | ||
1da177e4 | 221 | /* |
f0d5c6f4 DT |
222 | * __psmouse_set_state() sets new psmouse state and resets all flags. |
223 | */ | |
224 | ||
225 | static inline void __psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state) | |
226 | { | |
227 | psmouse->state = new_state; | |
b7802c5c | 228 | psmouse->pktcnt = psmouse->out_of_sync_cnt = 0; |
f0d5c6f4 DT |
229 | psmouse->ps2dev.flags = 0; |
230 | psmouse->last = jiffies; | |
231 | } | |
232 | ||
233 | ||
234 | /* | |
235 | * psmouse_set_state() sets new psmouse state and resets all flags and | |
236 | * counters while holding serio lock so fighting with interrupt handler | |
237 | * is not a concern. | |
238 | */ | |
239 | ||
a48cf5f3 | 240 | void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state) |
f0d5c6f4 DT |
241 | { |
242 | serio_pause_rx(psmouse->ps2dev.serio); | |
243 | __psmouse_set_state(psmouse, new_state); | |
244 | serio_continue_rx(psmouse->ps2dev.serio); | |
245 | } | |
246 | ||
247 | /* | |
248 | * psmouse_handle_byte() processes one byte of the input data stream | |
249 | * by calling corresponding protocol handler. | |
250 | */ | |
251 | ||
7d12e780 | 252 | static int psmouse_handle_byte(struct psmouse *psmouse) |
f0d5c6f4 | 253 | { |
7d12e780 | 254 | psmouse_ret_t rc = psmouse->protocol_handler(psmouse); |
f0d5c6f4 DT |
255 | |
256 | switch (rc) { | |
a62f0d27 DT |
257 | case PSMOUSE_BAD_DATA: |
258 | if (psmouse->state == PSMOUSE_ACTIVATED) { | |
b5d21704 DT |
259 | psmouse_warn(psmouse, |
260 | "%s at %s lost sync at byte %d\n", | |
261 | psmouse->name, psmouse->phys, | |
262 | psmouse->pktcnt); | |
a62f0d27 DT |
263 | if (++psmouse->out_of_sync_cnt == psmouse->resetafter) { |
264 | __psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
b5d21704 DT |
265 | psmouse_notice(psmouse, |
266 | "issuing reconnect request\n"); | |
a62f0d27 DT |
267 | serio_reconnect(psmouse->ps2dev.serio); |
268 | return -1; | |
f0d5c6f4 | 269 | } |
a62f0d27 DT |
270 | } |
271 | psmouse->pktcnt = 0; | |
272 | break; | |
273 | ||
274 | case PSMOUSE_FULL_PACKET: | |
275 | psmouse->pktcnt = 0; | |
276 | if (psmouse->out_of_sync_cnt) { | |
277 | psmouse->out_of_sync_cnt = 0; | |
b5d21704 DT |
278 | psmouse_notice(psmouse, |
279 | "%s at %s - driver resynced.\n", | |
280 | psmouse->name, psmouse->phys); | |
a62f0d27 DT |
281 | } |
282 | break; | |
f0d5c6f4 | 283 | |
a62f0d27 DT |
284 | case PSMOUSE_GOOD_DATA: |
285 | break; | |
f0d5c6f4 DT |
286 | } |
287 | return 0; | |
288 | } | |
289 | ||
290 | /* | |
291 | * psmouse_interrupt() handles incoming characters, either passing them | |
292 | * for normal processing or gathering them as command response. | |
1da177e4 LT |
293 | */ |
294 | ||
295 | static irqreturn_t psmouse_interrupt(struct serio *serio, | |
7d12e780 | 296 | unsigned char data, unsigned int flags) |
1da177e4 LT |
297 | { |
298 | struct psmouse *psmouse = serio_get_drvdata(serio); | |
1da177e4 LT |
299 | |
300 | if (psmouse->state == PSMOUSE_IGNORE) | |
301 | goto out; | |
302 | ||
6b9d363c DT |
303 | if (unlikely((flags & SERIO_TIMEOUT) || |
304 | ((flags & SERIO_PARITY) && !psmouse->ignore_parity))) { | |
305 | ||
1da177e4 | 306 | if (psmouse->state == PSMOUSE_ACTIVATED) |
b5d21704 DT |
307 | psmouse_warn(psmouse, |
308 | "bad data from KBC -%s%s\n", | |
309 | flags & SERIO_TIMEOUT ? " timeout" : "", | |
310 | flags & SERIO_PARITY ? " bad parity" : ""); | |
1da177e4 LT |
311 | ps2_cmd_aborted(&psmouse->ps2dev); |
312 | goto out; | |
313 | } | |
314 | ||
315 | if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_ACK)) | |
316 | if (ps2_handle_ack(&psmouse->ps2dev, data)) | |
317 | goto out; | |
318 | ||
319 | if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_CMD)) | |
320 | if (ps2_handle_response(&psmouse->ps2dev, data)) | |
321 | goto out; | |
322 | ||
f0d5c6f4 | 323 | if (psmouse->state <= PSMOUSE_RESYNCING) |
1da177e4 LT |
324 | goto out; |
325 | ||
326 | if (psmouse->state == PSMOUSE_ACTIVATED && | |
327 | psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) { | |
b5d21704 DT |
328 | psmouse_info(psmouse, "%s at %s lost synchronization, throwing %d bytes away.\n", |
329 | psmouse->name, psmouse->phys, psmouse->pktcnt); | |
f0d5c6f4 DT |
330 | psmouse->badbyte = psmouse->packet[0]; |
331 | __psmouse_set_state(psmouse, PSMOUSE_RESYNCING); | |
8bf020ee | 332 | psmouse_queue_work(psmouse, &psmouse->resync_work, 0); |
f0d5c6f4 | 333 | goto out; |
1da177e4 LT |
334 | } |
335 | ||
1da177e4 | 336 | psmouse->packet[psmouse->pktcnt++] = data; |
f0d5c6f4 DT |
337 | /* |
338 | * Check if this is a new device announcement (0xAA 0x00) | |
339 | */ | |
340 | if (unlikely(psmouse->packet[0] == PSMOUSE_RET_BAT && psmouse->pktcnt <= 2)) { | |
89c9b480 DT |
341 | if (psmouse->pktcnt == 1) { |
342 | psmouse->last = jiffies; | |
1da177e4 | 343 | goto out; |
89c9b480 | 344 | } |
1da177e4 | 345 | |
535650fd ZH |
346 | if (psmouse->packet[1] == PSMOUSE_RET_ID || |
347 | (psmouse->type == PSMOUSE_HGPK && | |
348 | psmouse->packet[1] == PSMOUSE_RET_BAT)) { | |
f0d5c6f4 DT |
349 | __psmouse_set_state(psmouse, PSMOUSE_IGNORE); |
350 | serio_reconnect(serio); | |
351 | goto out; | |
1da177e4 | 352 | } |
f0d5c6f4 DT |
353 | /* |
354 | * Not a new device, try processing first byte normally | |
355 | */ | |
356 | psmouse->pktcnt = 1; | |
7d12e780 | 357 | if (psmouse_handle_byte(psmouse)) |
f0d5c6f4 | 358 | goto out; |
1da177e4 | 359 | |
f0d5c6f4 DT |
360 | psmouse->packet[psmouse->pktcnt++] = data; |
361 | } | |
1da177e4 | 362 | |
f0d5c6f4 DT |
363 | /* |
364 | * See if we need to force resync because mouse was idle for too long | |
365 | */ | |
366 | if (psmouse->state == PSMOUSE_ACTIVATED && | |
367 | psmouse->pktcnt == 1 && psmouse->resync_time && | |
368 | time_after(jiffies, psmouse->last + psmouse->resync_time * HZ)) { | |
369 | psmouse->badbyte = psmouse->packet[0]; | |
370 | __psmouse_set_state(psmouse, PSMOUSE_RESYNCING); | |
8bf020ee | 371 | psmouse_queue_work(psmouse, &psmouse->resync_work, 0); |
f0d5c6f4 DT |
372 | goto out; |
373 | } | |
1da177e4 | 374 | |
f0d5c6f4 | 375 | psmouse->last = jiffies; |
7d12e780 | 376 | psmouse_handle_byte(psmouse); |
1da177e4 | 377 | |
f0d5c6f4 | 378 | out: |
1da177e4 LT |
379 | return IRQ_HANDLED; |
380 | } | |
381 | ||
382 | ||
383 | /* | |
384 | * psmouse_sliced_command() sends an extended PS/2 command to the mouse | |
385 | * using sliced syntax, understood by advanced devices, such as Logitech | |
386 | * or Synaptics touchpads. The command is encoded as: | |
387 | * 0xE6 0xE8 rr 0xE8 ss 0xE8 tt 0xE8 uu where (rr*64)+(ss*16)+(tt*4)+uu | |
388 | * is the command. | |
389 | */ | |
390 | int psmouse_sliced_command(struct psmouse *psmouse, unsigned char command) | |
391 | { | |
392 | int i; | |
393 | ||
394 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11)) | |
395 | return -1; | |
396 | ||
397 | for (i = 6; i >= 0; i -= 2) { | |
398 | unsigned char d = (command >> i) & 3; | |
399 | if (ps2_command(&psmouse->ps2dev, &d, PSMOUSE_CMD_SETRES)) | |
400 | return -1; | |
401 | } | |
402 | ||
403 | return 0; | |
404 | } | |
405 | ||
406 | ||
407 | /* | |
408 | * psmouse_reset() resets the mouse into power-on state. | |
409 | */ | |
410 | int psmouse_reset(struct psmouse *psmouse) | |
411 | { | |
412 | unsigned char param[2]; | |
413 | ||
414 | if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_RESET_BAT)) | |
415 | return -1; | |
416 | ||
417 | if (param[0] != PSMOUSE_RET_BAT && param[1] != PSMOUSE_RET_ID) | |
418 | return -1; | |
419 | ||
420 | return 0; | |
421 | } | |
422 | ||
ee9dfd7a DT |
423 | /* |
424 | * Here we set the mouse resolution. | |
425 | */ | |
426 | ||
427 | void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution) | |
428 | { | |
429 | static const unsigned char params[] = { 0, 1, 2, 2, 3 }; | |
430 | unsigned char p; | |
431 | ||
432 | if (resolution == 0 || resolution > 200) | |
433 | resolution = 200; | |
434 | ||
435 | p = params[resolution / 50]; | |
436 | ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES); | |
437 | psmouse->resolution = 25 << p; | |
438 | } | |
439 | ||
440 | /* | |
441 | * Here we set the mouse report rate. | |
442 | */ | |
443 | ||
444 | static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate) | |
445 | { | |
446 | static const unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 }; | |
447 | unsigned char r; | |
448 | int i = 0; | |
449 | ||
450 | while (rates[i] > rate) i++; | |
451 | r = rates[i]; | |
452 | ps2_command(&psmouse->ps2dev, &r, PSMOUSE_CMD_SETRATE); | |
453 | psmouse->rate = r; | |
454 | } | |
455 | ||
4ec212f0 MG |
456 | /* |
457 | * Here we set the mouse scaling. | |
458 | */ | |
459 | ||
460 | static void psmouse_set_scale(struct psmouse *psmouse, enum psmouse_scale scale) | |
461 | { | |
462 | ps2_command(&psmouse->ps2dev, NULL, | |
463 | scale == PSMOUSE_SCALE21 ? PSMOUSE_CMD_SETSCALE21 : | |
464 | PSMOUSE_CMD_SETSCALE11); | |
465 | } | |
466 | ||
ee9dfd7a DT |
467 | /* |
468 | * psmouse_poll() - default poll handler. Everyone except for ALPS uses it. | |
469 | */ | |
470 | ||
471 | static int psmouse_poll(struct psmouse *psmouse) | |
472 | { | |
473 | return ps2_command(&psmouse->ps2dev, psmouse->packet, | |
474 | PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)); | |
475 | } | |
476 | ||
2c75ada6 HG |
477 | /* |
478 | * psmouse_matches_pnp_id - check if psmouse matches one of the passed in ids. | |
479 | */ | |
480 | bool psmouse_matches_pnp_id(struct psmouse *psmouse, const char * const ids[]) | |
481 | { | |
482 | int i; | |
483 | ||
484 | if (!strncmp(psmouse->ps2dev.serio->firmware_id, "PNP:", 4)) | |
485 | for (i = 0; ids[i]; i++) | |
486 | if (strstr(psmouse->ps2dev.serio->firmware_id, ids[i])) | |
487 | return true; | |
488 | ||
489 | return false; | |
490 | } | |
1da177e4 LT |
491 | |
492 | /* | |
493 | * Genius NetMouse magic init. | |
494 | */ | |
b7802c5c | 495 | static int genius_detect(struct psmouse *psmouse, bool set_properties) |
1da177e4 LT |
496 | { |
497 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
498 | unsigned char param[4]; | |
499 | ||
500 | param[0] = 3; | |
501 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); | |
502 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
503 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
504 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
505 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); | |
506 | ||
507 | if (param[0] != 0x00 || param[1] != 0x33 || param[2] != 0x55) | |
508 | return -1; | |
509 | ||
510 | if (set_properties) { | |
315eb996 | 511 | __set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
b7802c5c DT |
512 | __set_bit(BTN_EXTRA, psmouse->dev->keybit); |
513 | __set_bit(BTN_SIDE, psmouse->dev->keybit); | |
514 | __set_bit(REL_WHEEL, psmouse->dev->relbit); | |
1da177e4 LT |
515 | |
516 | psmouse->vendor = "Genius"; | |
a3f3f317 | 517 | psmouse->name = "Mouse"; |
1da177e4 LT |
518 | psmouse->pktsize = 4; |
519 | } | |
520 | ||
521 | return 0; | |
522 | } | |
523 | ||
524 | /* | |
525 | * IntelliMouse magic init. | |
526 | */ | |
b7802c5c | 527 | static int intellimouse_detect(struct psmouse *psmouse, bool set_properties) |
1da177e4 LT |
528 | { |
529 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
530 | unsigned char param[2]; | |
531 | ||
532 | param[0] = 200; | |
533 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
534 | param[0] = 100; | |
535 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
536 | param[0] = 80; | |
537 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
538 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); | |
539 | ||
540 | if (param[0] != 3) | |
541 | return -1; | |
542 | ||
543 | if (set_properties) { | |
b7802c5c DT |
544 | __set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
545 | __set_bit(REL_WHEEL, psmouse->dev->relbit); | |
1da177e4 | 546 | |
315eb996 DT |
547 | if (!psmouse->vendor) |
548 | psmouse->vendor = "Generic"; | |
549 | if (!psmouse->name) | |
550 | psmouse->name = "Wheel Mouse"; | |
1da177e4 LT |
551 | psmouse->pktsize = 4; |
552 | } | |
553 | ||
554 | return 0; | |
555 | } | |
556 | ||
557 | /* | |
558 | * Try IntelliMouse/Explorer magic init. | |
559 | */ | |
b7802c5c | 560 | static int im_explorer_detect(struct psmouse *psmouse, bool set_properties) |
1da177e4 LT |
561 | { |
562 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
563 | unsigned char param[2]; | |
564 | ||
565 | intellimouse_detect(psmouse, 0); | |
566 | ||
567 | param[0] = 200; | |
568 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
569 | param[0] = 200; | |
570 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
571 | param[0] = 80; | |
572 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
573 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); | |
574 | ||
575 | if (param[0] != 4) | |
576 | return -1; | |
577 | ||
b0c9ad8e PB |
578 | /* Magic to enable horizontal scrolling on IntelliMouse 4.0 */ |
579 | param[0] = 200; | |
580 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
581 | param[0] = 80; | |
582 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
583 | param[0] = 40; | |
584 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
585 | ||
1da177e4 | 586 | if (set_properties) { |
b7802c5c DT |
587 | __set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
588 | __set_bit(REL_WHEEL, psmouse->dev->relbit); | |
589 | __set_bit(REL_HWHEEL, psmouse->dev->relbit); | |
590 | __set_bit(BTN_SIDE, psmouse->dev->keybit); | |
591 | __set_bit(BTN_EXTRA, psmouse->dev->keybit); | |
1da177e4 | 592 | |
315eb996 DT |
593 | if (!psmouse->vendor) |
594 | psmouse->vendor = "Generic"; | |
595 | if (!psmouse->name) | |
596 | psmouse->name = "Explorer Mouse"; | |
1da177e4 LT |
597 | psmouse->pktsize = 4; |
598 | } | |
599 | ||
600 | return 0; | |
601 | } | |
602 | ||
603 | /* | |
604 | * Kensington ThinkingMouse / ExpertMouse magic init. | |
605 | */ | |
b7802c5c | 606 | static int thinking_detect(struct psmouse *psmouse, bool set_properties) |
1da177e4 LT |
607 | { |
608 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
609 | unsigned char param[2]; | |
e38de678 | 610 | static const unsigned char seq[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20 }; |
1da177e4 LT |
611 | int i; |
612 | ||
613 | param[0] = 10; | |
614 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
615 | param[0] = 0; | |
616 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); | |
e38de678 HD |
617 | for (i = 0; i < ARRAY_SIZE(seq); i++) { |
618 | param[0] = seq[i]; | |
619 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
620 | } | |
1da177e4 LT |
621 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); |
622 | ||
623 | if (param[0] != 2) | |
624 | return -1; | |
625 | ||
626 | if (set_properties) { | |
315eb996 | 627 | __set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
b7802c5c | 628 | __set_bit(BTN_EXTRA, psmouse->dev->keybit); |
1da177e4 LT |
629 | |
630 | psmouse->vendor = "Kensington"; | |
631 | psmouse->name = "ThinkingMouse"; | |
632 | } | |
633 | ||
634 | return 0; | |
635 | } | |
636 | ||
637 | /* | |
638 | * Bare PS/2 protocol "detection". Always succeeds. | |
639 | */ | |
b7802c5c | 640 | static int ps2bare_detect(struct psmouse *psmouse, bool set_properties) |
1da177e4 | 641 | { |
dbf4ccd6 | 642 | if (set_properties) { |
315eb996 DT |
643 | if (!psmouse->vendor) |
644 | psmouse->vendor = "Generic"; | |
645 | if (!psmouse->name) | |
646 | psmouse->name = "Mouse"; | |
647 | ||
648 | /* | |
649 | * We have no way of figuring true number of buttons so let's | |
650 | * assume that the device has 3. | |
651 | */ | |
652 | __set_bit(BTN_MIDDLE, psmouse->dev->keybit); | |
dbf4ccd6 | 653 | } |
1da177e4 LT |
654 | |
655 | return 0; | |
656 | } | |
657 | ||
aea6a461 AR |
658 | /* |
659 | * Cortron PS/2 protocol detection. There's no special way to detect it, so it | |
660 | * must be forced by sysfs protocol writing. | |
661 | */ | |
b7802c5c | 662 | static int cortron_detect(struct psmouse *psmouse, bool set_properties) |
aea6a461 AR |
663 | { |
664 | if (set_properties) { | |
665 | psmouse->vendor = "Cortron"; | |
666 | psmouse->name = "PS/2 Trackball"; | |
315eb996 DT |
667 | |
668 | __set_bit(BTN_MIDDLE, psmouse->dev->keybit); | |
b7802c5c | 669 | __set_bit(BTN_SIDE, psmouse->dev->keybit); |
aea6a461 AR |
670 | } |
671 | ||
672 | return 0; | |
673 | } | |
dbf4ccd6 | 674 | |
ee9dfd7a DT |
675 | /* |
676 | * Apply default settings to the psmouse structure. Most of them will | |
677 | * be overridden by individual protocol initialization routines. | |
678 | */ | |
679 | ||
680 | static void psmouse_apply_defaults(struct psmouse *psmouse) | |
681 | { | |
682 | struct input_dev *input_dev = psmouse->dev; | |
683 | ||
684 | memset(input_dev->evbit, 0, sizeof(input_dev->evbit)); | |
685 | memset(input_dev->keybit, 0, sizeof(input_dev->keybit)); | |
686 | memset(input_dev->relbit, 0, sizeof(input_dev->relbit)); | |
687 | memset(input_dev->absbit, 0, sizeof(input_dev->absbit)); | |
688 | memset(input_dev->mscbit, 0, sizeof(input_dev->mscbit)); | |
689 | ||
690 | __set_bit(EV_KEY, input_dev->evbit); | |
691 | __set_bit(EV_REL, input_dev->evbit); | |
692 | ||
693 | __set_bit(BTN_LEFT, input_dev->keybit); | |
694 | __set_bit(BTN_RIGHT, input_dev->keybit); | |
695 | ||
696 | __set_bit(REL_X, input_dev->relbit); | |
697 | __set_bit(REL_Y, input_dev->relbit); | |
698 | ||
01d4cd5c HG |
699 | __set_bit(INPUT_PROP_POINTER, input_dev->propbit); |
700 | ||
ee9dfd7a DT |
701 | psmouse->set_rate = psmouse_set_rate; |
702 | psmouse->set_resolution = psmouse_set_resolution; | |
4ec212f0 | 703 | psmouse->set_scale = psmouse_set_scale; |
ee9dfd7a DT |
704 | psmouse->poll = psmouse_poll; |
705 | psmouse->protocol_handler = psmouse_process_byte; | |
706 | psmouse->pktsize = 3; | |
707 | psmouse->reconnect = NULL; | |
708 | psmouse->disconnect = NULL; | |
709 | psmouse->cleanup = NULL; | |
710 | psmouse->pt_activate = NULL; | |
711 | psmouse->pt_deactivate = NULL; | |
712 | } | |
713 | ||
714 | /* | |
715 | * Apply default settings to the psmouse structure and call specified | |
716 | * protocol detection or initialization routine. | |
717 | */ | |
718 | static int psmouse_do_detect(int (*detect)(struct psmouse *psmouse, | |
719 | bool set_properties), | |
720 | struct psmouse *psmouse, bool set_properties) | |
721 | { | |
722 | if (set_properties) | |
723 | psmouse_apply_defaults(psmouse); | |
724 | ||
725 | return detect(psmouse, set_properties); | |
726 | } | |
727 | ||
1da177e4 LT |
728 | /* |
729 | * psmouse_extensions() probes for any extensions to the basic PS/2 protocol | |
730 | * the mouse may have. | |
731 | */ | |
732 | ||
733 | static int psmouse_extensions(struct psmouse *psmouse, | |
b7802c5c | 734 | unsigned int max_proto, bool set_properties) |
1da177e4 | 735 | { |
0698989d | 736 | bool synaptics_hardware = false; |
1da177e4 | 737 | |
3ace3686 HG |
738 | /* Always check for focaltech, this is safe as it uses pnp-id matching */ |
739 | if (psmouse_do_detect(focaltech_detect, psmouse, set_properties) == 0) { | |
05be1d07 MG |
740 | if (max_proto > PSMOUSE_IMEX) { |
741 | if (!set_properties || focaltech_init(psmouse) == 0) { | |
290b799c | 742 | if (IS_ENABLED(CONFIG_MOUSE_PS2_FOCALTECH)) |
05be1d07 MG |
743 | return PSMOUSE_FOCALTECH; |
744 | /* | |
745 | * Note that we need to also restrict | |
746 | * psmouse_max_proto so that psmouse_initialize() | |
747 | * does not try to reset rate and resolution, | |
748 | * because even that upsets the device. | |
749 | */ | |
750 | psmouse_max_proto = PSMOUSE_PS2; | |
751 | return PSMOUSE_PS2; | |
752 | } | |
3ace3686 HG |
753 | } |
754 | } | |
755 | ||
a15d60f8 DT |
756 | /* |
757 | * We always check for lifebook because it does not disturb mouse | |
758 | * (it only checks DMI information). | |
759 | */ | |
ee9dfd7a | 760 | if (psmouse_do_detect(lifebook_detect, psmouse, set_properties) == 0) { |
a15d60f8 DT |
761 | if (max_proto > PSMOUSE_IMEX) { |
762 | if (!set_properties || lifebook_init(psmouse) == 0) | |
763 | return PSMOUSE_LIFEBOOK; | |
764 | } | |
765 | } | |
02d7f589 | 766 | |
1da177e4 LT |
767 | /* |
768 | * Try Kensington ThinkingMouse (we try first, because synaptics probe | |
769 | * upsets the thinkingmouse). | |
770 | */ | |
771 | ||
ee9dfd7a DT |
772 | if (max_proto > PSMOUSE_IMEX && |
773 | psmouse_do_detect(thinking_detect, psmouse, set_properties) == 0) { | |
1da177e4 | 774 | return PSMOUSE_THINKPS; |
ee9dfd7a | 775 | } |
1da177e4 LT |
776 | |
777 | /* | |
55e3d922 AS |
778 | * Try Synaptics TouchPad. Note that probing is done even if Synaptics protocol |
779 | * support is disabled in config - we need to know if it is synaptics so we | |
780 | * can reset it properly after probing for intellimouse. | |
1da177e4 | 781 | */ |
ee9dfd7a DT |
782 | if (max_proto > PSMOUSE_PS2 && |
783 | psmouse_do_detect(synaptics_detect, psmouse, set_properties) == 0) { | |
b7802c5c | 784 | synaptics_hardware = true; |
1da177e4 LT |
785 | |
786 | if (max_proto > PSMOUSE_IMEX) { | |
e4e6efd2 DD |
787 | /* |
788 | * Try activating protocol, but check if support is enabled first, since | |
789 | * we try detecting Synaptics even when protocol is disabled. | |
790 | */ | |
290b799c | 791 | if (IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS) && |
e4e6efd2 | 792 | (!set_properties || synaptics_init(psmouse) == 0)) { |
1da177e4 | 793 | return PSMOUSE_SYNAPTICS; |
e4e6efd2 DD |
794 | } |
795 | ||
1da177e4 LT |
796 | /* |
797 | * Some Synaptics touchpads can emulate extended protocols (like IMPS/2). | |
798 | * Unfortunately Logitech/Genius probes confuse some firmware versions so | |
799 | * we'll have to skip them. | |
800 | */ | |
801 | max_proto = PSMOUSE_IMEX; | |
802 | } | |
803 | /* | |
804 | * Make sure that touchpad is in relative mode, gestures (taps) are enabled | |
805 | */ | |
806 | synaptics_reset(psmouse); | |
807 | } | |
808 | ||
0799a924 DD |
809 | /* |
810 | * Try Cypress Trackpad. | |
811 | * Must try it before Finger Sensing Pad because Finger Sensing Pad probe | |
812 | * upsets some modules of Cypress Trackpads. | |
813 | */ | |
814 | if (max_proto > PSMOUSE_IMEX && | |
815 | cypress_detect(psmouse, set_properties) == 0) { | |
290b799c | 816 | if (IS_ENABLED(CONFIG_MOUSE_PS2_CYPRESS)) { |
0799a924 DD |
817 | if (cypress_init(psmouse) == 0) |
818 | return PSMOUSE_CYPRESS; | |
819 | ||
820 | /* | |
821 | * Finger Sensing Pad probe upsets some modules of | |
822 | * Cypress Trackpad, must avoid Finger Sensing Pad | |
823 | * probe if Cypress Trackpad device detected. | |
824 | */ | |
825 | return PSMOUSE_PS2; | |
826 | } | |
827 | ||
828 | max_proto = PSMOUSE_IMEX; | |
829 | } | |
830 | ||
1da177e4 LT |
831 | /* |
832 | * Try ALPS TouchPad | |
833 | */ | |
834 | if (max_proto > PSMOUSE_IMEX) { | |
835 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); | |
ee9dfd7a DT |
836 | if (psmouse_do_detect(alps_detect, |
837 | psmouse, set_properties) == 0) { | |
1da177e4 LT |
838 | if (!set_properties || alps_init(psmouse) == 0) |
839 | return PSMOUSE_ALPS; | |
840 | /* | |
841 | * Init failed, try basic relative protocols | |
842 | */ | |
843 | max_proto = PSMOUSE_IMEX; | |
844 | } | |
845 | } | |
846 | ||
df08ef27 AS |
847 | /* |
848 | * Try OLPC HGPK touchpad. | |
849 | */ | |
850 | if (max_proto > PSMOUSE_IMEX && | |
ee9dfd7a | 851 | psmouse_do_detect(hgpk_detect, psmouse, set_properties) == 0) { |
df08ef27 AS |
852 | if (!set_properties || hgpk_init(psmouse) == 0) |
853 | return PSMOUSE_HGPK; | |
854 | /* | |
855 | * Init failed, try basic relative protocols | |
856 | */ | |
857 | max_proto = PSMOUSE_IMEX; | |
858 | } | |
24bf10ab | 859 | |
2a0bd75e AO |
860 | /* |
861 | * Try Elantech touchpad. | |
862 | */ | |
863 | if (max_proto > PSMOUSE_IMEX && | |
ee9dfd7a | 864 | psmouse_do_detect(elantech_detect, psmouse, set_properties) == 0) { |
2a0bd75e AO |
865 | if (!set_properties || elantech_init(psmouse) == 0) |
866 | return PSMOUSE_ELANTECH; | |
867 | /* | |
868 | * Init failed, try basic relative protocols | |
869 | */ | |
870 | max_proto = PSMOUSE_IMEX; | |
871 | } | |
872 | ||
df08ef27 | 873 | if (max_proto > PSMOUSE_IMEX) { |
ee9dfd7a DT |
874 | if (psmouse_do_detect(genius_detect, |
875 | psmouse, set_properties) == 0) | |
24bf10ab SL |
876 | return PSMOUSE_GENPS; |
877 | ||
ee9dfd7a DT |
878 | if (psmouse_do_detect(ps2pp_init, |
879 | psmouse, set_properties) == 0) | |
24bf10ab | 880 | return PSMOUSE_PS2PP; |
1da177e4 | 881 | |
ee9dfd7a DT |
882 | if (psmouse_do_detect(trackpoint_detect, |
883 | psmouse, set_properties) == 0) | |
24bf10ab | 884 | return PSMOUSE_TRACKPOINT; |
1da177e4 | 885 | |
ee9dfd7a DT |
886 | if (psmouse_do_detect(touchkit_ps2_detect, |
887 | psmouse, set_properties) == 0) | |
24bf10ab SL |
888 | return PSMOUSE_TOUCHKIT_PS2; |
889 | } | |
ba44995a | 890 | |
4a18b3ab TL |
891 | /* |
892 | * Try Finger Sensing Pad. We do it here because its probe upsets | |
893 | * Trackpoint devices (causing TP_READ_ID command to time out). | |
894 | */ | |
895 | if (max_proto > PSMOUSE_IMEX) { | |
ee9dfd7a DT |
896 | if (psmouse_do_detect(fsp_detect, |
897 | psmouse, set_properties) == 0) { | |
4a18b3ab TL |
898 | if (!set_properties || fsp_init(psmouse) == 0) |
899 | return PSMOUSE_FSP; | |
900 | /* | |
901 | * Init failed, try basic relative protocols | |
902 | */ | |
903 | max_proto = PSMOUSE_IMEX; | |
904 | } | |
905 | } | |
906 | ||
1da177e4 LT |
907 | /* |
908 | * Reset to defaults in case the device got confused by extended | |
554fc193 AZ |
909 | * protocol probes. Note that we follow up with full reset because |
910 | * some mice put themselves to sleep when they see PSMOUSE_RESET_DIS. | |
1da177e4 | 911 | */ |
554fc193 | 912 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); |
ba44995a | 913 | psmouse_reset(psmouse); |
1da177e4 | 914 | |
ee9dfd7a DT |
915 | if (max_proto >= PSMOUSE_IMEX && |
916 | psmouse_do_detect(im_explorer_detect, | |
917 | psmouse, set_properties) == 0) { | |
1da177e4 | 918 | return PSMOUSE_IMEX; |
ee9dfd7a | 919 | } |
1da177e4 | 920 | |
ee9dfd7a DT |
921 | if (max_proto >= PSMOUSE_IMPS && |
922 | psmouse_do_detect(intellimouse_detect, | |
923 | psmouse, set_properties) == 0) { | |
1da177e4 | 924 | return PSMOUSE_IMPS; |
ee9dfd7a | 925 | } |
1da177e4 LT |
926 | |
927 | /* | |
928 | * Okay, all failed, we have a standard mouse here. The number of the buttons | |
929 | * is still a question, though. We assume 3. | |
930 | */ | |
ee9dfd7a | 931 | psmouse_do_detect(ps2bare_detect, psmouse, set_properties); |
1da177e4 LT |
932 | |
933 | if (synaptics_hardware) { | |
934 | /* | |
935 | * We detected Synaptics hardware but it did not respond to IMPS/2 probes. | |
936 | * We need to reset the touchpad because if there is a track point on the | |
937 | * pass through port it could get disabled while probing for protocol | |
938 | * extensions. | |
939 | */ | |
940 | psmouse_reset(psmouse); | |
1da177e4 LT |
941 | } |
942 | ||
943 | return PSMOUSE_PS2; | |
944 | } | |
945 | ||
e38de678 | 946 | static const struct psmouse_protocol psmouse_protocols[] = { |
dbf4ccd6 DT |
947 | { |
948 | .type = PSMOUSE_PS2, | |
949 | .name = "PS/2", | |
950 | .alias = "bare", | |
b7802c5c | 951 | .maxproto = true, |
6b9d363c | 952 | .ignore_parity = true, |
dbf4ccd6 DT |
953 | .detect = ps2bare_detect, |
954 | }, | |
55e3d922 | 955 | #ifdef CONFIG_MOUSE_PS2_LOGIPS2PP |
dbf4ccd6 DT |
956 | { |
957 | .type = PSMOUSE_PS2PP, | |
958 | .name = "PS2++", | |
959 | .alias = "logitech", | |
960 | .detect = ps2pp_init, | |
961 | }, | |
55e3d922 | 962 | #endif |
dbf4ccd6 DT |
963 | { |
964 | .type = PSMOUSE_THINKPS, | |
965 | .name = "ThinkPS/2", | |
966 | .alias = "thinkps", | |
967 | .detect = thinking_detect, | |
968 | }, | |
0799a924 DD |
969 | #ifdef CONFIG_MOUSE_PS2_CYPRESS |
970 | { | |
971 | .type = PSMOUSE_CYPRESS, | |
972 | .name = "CyPS/2", | |
973 | .alias = "cypress", | |
974 | .detect = cypress_detect, | |
975 | .init = cypress_init, | |
976 | }, | |
977 | #endif | |
dbf4ccd6 DT |
978 | { |
979 | .type = PSMOUSE_GENPS, | |
980 | .name = "GenPS/2", | |
981 | .alias = "genius", | |
982 | .detect = genius_detect, | |
983 | }, | |
984 | { | |
985 | .type = PSMOUSE_IMPS, | |
986 | .name = "ImPS/2", | |
987 | .alias = "imps", | |
b7802c5c | 988 | .maxproto = true, |
6b9d363c | 989 | .ignore_parity = true, |
dbf4ccd6 DT |
990 | .detect = intellimouse_detect, |
991 | }, | |
992 | { | |
993 | .type = PSMOUSE_IMEX, | |
994 | .name = "ImExPS/2", | |
995 | .alias = "exps", | |
b7802c5c | 996 | .maxproto = true, |
6b9d363c | 997 | .ignore_parity = true, |
dbf4ccd6 DT |
998 | .detect = im_explorer_detect, |
999 | }, | |
55e3d922 | 1000 | #ifdef CONFIG_MOUSE_PS2_SYNAPTICS |
dbf4ccd6 DT |
1001 | { |
1002 | .type = PSMOUSE_SYNAPTICS, | |
1003 | .name = "SynPS/2", | |
1004 | .alias = "synaptics", | |
1005 | .detect = synaptics_detect, | |
1006 | .init = synaptics_init, | |
1007 | }, | |
7968a5dd DD |
1008 | { |
1009 | .type = PSMOUSE_SYNAPTICS_RELATIVE, | |
1010 | .name = "SynRelPS/2", | |
1011 | .alias = "synaptics-relative", | |
1012 | .detect = synaptics_detect, | |
1013 | .init = synaptics_init_relative, | |
1014 | }, | |
55e3d922 AS |
1015 | #endif |
1016 | #ifdef CONFIG_MOUSE_PS2_ALPS | |
dbf4ccd6 DT |
1017 | { |
1018 | .type = PSMOUSE_ALPS, | |
1019 | .name = "AlpsPS/2", | |
1020 | .alias = "alps", | |
1021 | .detect = alps_detect, | |
1022 | .init = alps_init, | |
1023 | }, | |
55e3d922 AS |
1024 | #endif |
1025 | #ifdef CONFIG_MOUSE_PS2_LIFEBOOK | |
dbf4ccd6 DT |
1026 | { |
1027 | .type = PSMOUSE_LIFEBOOK, | |
1028 | .name = "LBPS/2", | |
1029 | .alias = "lifebook", | |
1030 | .init = lifebook_init, | |
1031 | }, | |
55e3d922 AS |
1032 | #endif |
1033 | #ifdef CONFIG_MOUSE_PS2_TRACKPOINT | |
541e316a SE |
1034 | { |
1035 | .type = PSMOUSE_TRACKPOINT, | |
1036 | .name = "TPPS/2", | |
1037 | .alias = "trackpoint", | |
1038 | .detect = trackpoint_detect, | |
1039 | }, | |
55e3d922 AS |
1040 | #endif |
1041 | #ifdef CONFIG_MOUSE_PS2_TOUCHKIT | |
24bf10ab SL |
1042 | { |
1043 | .type = PSMOUSE_TOUCHKIT_PS2, | |
1044 | .name = "touchkitPS/2", | |
1045 | .alias = "touchkit", | |
1046 | .detect = touchkit_ps2_detect, | |
1047 | }, | |
df08ef27 AS |
1048 | #endif |
1049 | #ifdef CONFIG_MOUSE_PS2_OLPC | |
1050 | { | |
1051 | .type = PSMOUSE_HGPK, | |
1052 | .name = "OLPC HGPK", | |
1053 | .alias = "hgpk", | |
1054 | .detect = hgpk_detect, | |
1055 | }, | |
55e3d922 | 1056 | #endif |
2a0bd75e AO |
1057 | #ifdef CONFIG_MOUSE_PS2_ELANTECH |
1058 | { | |
1059 | .type = PSMOUSE_ELANTECH, | |
1060 | .name = "ETPS/2", | |
1061 | .alias = "elantech", | |
1062 | .detect = elantech_detect, | |
1063 | .init = elantech_init, | |
1064 | }, | |
fc69f4a6 TL |
1065 | #endif |
1066 | #ifdef CONFIG_MOUSE_PS2_SENTELIC | |
1067 | { | |
1068 | .type = PSMOUSE_FSP, | |
1069 | .name = "FSPPS/2", | |
1070 | .alias = "fsp", | |
1071 | .detect = fsp_detect, | |
1072 | .init = fsp_init, | |
1073 | }, | |
1074 | #endif | |
aea6a461 AR |
1075 | { |
1076 | .type = PSMOUSE_CORTRON, | |
1077 | .name = "CortronPS/2", | |
1078 | .alias = "cortps", | |
1079 | .detect = cortron_detect, | |
1080 | }, | |
05be1d07 MG |
1081 | #ifdef CONFIG_MOUSE_PS2_FOCALTECH |
1082 | { | |
1083 | .type = PSMOUSE_FOCALTECH, | |
1084 | .name = "FocalTechPS/2", | |
1085 | .alias = "focaltech", | |
1086 | .detect = focaltech_detect, | |
1087 | .init = focaltech_init, | |
1088 | }, | |
1089 | #endif | |
dbf4ccd6 DT |
1090 | { |
1091 | .type = PSMOUSE_AUTO, | |
1092 | .name = "auto", | |
1093 | .alias = "any", | |
b7802c5c | 1094 | .maxproto = true, |
dbf4ccd6 DT |
1095 | }, |
1096 | }; | |
1097 | ||
e38de678 | 1098 | static const struct psmouse_protocol *psmouse_protocol_by_type(enum psmouse_type type) |
dbf4ccd6 DT |
1099 | { |
1100 | int i; | |
1101 | ||
1102 | for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++) | |
1103 | if (psmouse_protocols[i].type == type) | |
1104 | return &psmouse_protocols[i]; | |
1105 | ||
1106 | WARN_ON(1); | |
1107 | return &psmouse_protocols[0]; | |
1108 | } | |
1109 | ||
e38de678 | 1110 | static const struct psmouse_protocol *psmouse_protocol_by_name(const char *name, size_t len) |
dbf4ccd6 | 1111 | { |
e38de678 | 1112 | const struct psmouse_protocol *p; |
dbf4ccd6 DT |
1113 | int i; |
1114 | ||
1115 | for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++) { | |
1116 | p = &psmouse_protocols[i]; | |
1117 | ||
1118 | if ((strlen(p->name) == len && !strncmp(p->name, name, len)) || | |
1119 | (strlen(p->alias) == len && !strncmp(p->alias, name, len))) | |
1120 | return &psmouse_protocols[i]; | |
1121 | } | |
1122 | ||
1123 | return NULL; | |
1124 | } | |
1125 | ||
1126 | ||
1da177e4 LT |
1127 | /* |
1128 | * psmouse_probe() probes for a PS/2 mouse. | |
1129 | */ | |
1130 | ||
1131 | static int psmouse_probe(struct psmouse *psmouse) | |
1132 | { | |
1133 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
1134 | unsigned char param[2]; | |
1135 | ||
1136 | /* | |
1137 | * First, we check if it's a mouse. It should send 0x00 or 0x03 | |
1138 | * in case of an IntelliMouse in 4-byte mode or 0x04 for IM Explorer. | |
7741e931 VP |
1139 | * Sunrex K8561 IR Keyboard/Mouse reports 0xff on second and subsequent |
1140 | * ID queries, probably due to a firmware bug. | |
1da177e4 LT |
1141 | */ |
1142 | ||
1143 | param[0] = 0xa5; | |
1144 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) | |
1145 | return -1; | |
1146 | ||
7741e931 VP |
1147 | if (param[0] != 0x00 && param[0] != 0x03 && |
1148 | param[0] != 0x04 && param[0] != 0xff) | |
1da177e4 LT |
1149 | return -1; |
1150 | ||
1151 | /* | |
1152 | * Then we reset and disable the mouse so that it doesn't generate events. | |
1153 | */ | |
1154 | ||
1155 | if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_DIS)) | |
b5d21704 DT |
1156 | psmouse_warn(psmouse, "Failed to reset mouse on %s\n", |
1157 | ps2dev->serio->phys); | |
1da177e4 LT |
1158 | |
1159 | return 0; | |
1160 | } | |
1161 | ||
1da177e4 LT |
1162 | /* |
1163 | * psmouse_initialize() initializes the mouse to a sane state. | |
1164 | */ | |
1165 | ||
1166 | static void psmouse_initialize(struct psmouse *psmouse) | |
1167 | { | |
1da177e4 LT |
1168 | /* |
1169 | * We set the mouse report rate, resolution and scaling. | |
1170 | */ | |
1171 | ||
1172 | if (psmouse_max_proto != PSMOUSE_PS2) { | |
1173 | psmouse->set_rate(psmouse, psmouse->rate); | |
1174 | psmouse->set_resolution(psmouse, psmouse->resolution); | |
4ec212f0 | 1175 | psmouse->set_scale(psmouse, PSMOUSE_SCALE11); |
1da177e4 LT |
1176 | } |
1177 | } | |
1178 | ||
1da177e4 LT |
1179 | /* |
1180 | * psmouse_activate() enables the mouse so that we get motion reports from it. | |
1181 | */ | |
1182 | ||
bd26f3d6 | 1183 | int psmouse_activate(struct psmouse *psmouse) |
1da177e4 | 1184 | { |
bd26f3d6 | 1185 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { |
b5d21704 DT |
1186 | psmouse_warn(psmouse, "Failed to enable mouse on %s\n", |
1187 | psmouse->ps2dev.serio->phys); | |
bd26f3d6 AS |
1188 | return -1; |
1189 | } | |
1da177e4 LT |
1190 | |
1191 | psmouse_set_state(psmouse, PSMOUSE_ACTIVATED); | |
bd26f3d6 | 1192 | return 0; |
1da177e4 LT |
1193 | } |
1194 | ||
1da177e4 LT |
1195 | /* |
1196 | * psmouse_deactivate() puts the mouse into poll mode so that we don't get motion | |
c03983ac | 1197 | * reports from it unless we explicitly request it. |
1da177e4 LT |
1198 | */ |
1199 | ||
bd26f3d6 | 1200 | int psmouse_deactivate(struct psmouse *psmouse) |
1da177e4 | 1201 | { |
bd26f3d6 | 1202 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE)) { |
b5d21704 DT |
1203 | psmouse_warn(psmouse, "Failed to deactivate mouse on %s\n", |
1204 | psmouse->ps2dev.serio->phys); | |
bd26f3d6 AS |
1205 | return -1; |
1206 | } | |
1da177e4 LT |
1207 | |
1208 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
bd26f3d6 | 1209 | return 0; |
1da177e4 LT |
1210 | } |
1211 | ||
f0d5c6f4 DT |
1212 | |
1213 | /* | |
1214 | * psmouse_resync() attempts to re-validate current protocol. | |
1215 | */ | |
1216 | ||
c4028958 | 1217 | static void psmouse_resync(struct work_struct *work) |
f0d5c6f4 | 1218 | { |
c4028958 | 1219 | struct psmouse *parent = NULL, *psmouse = |
8bf020ee | 1220 | container_of(work, struct psmouse, resync_work.work); |
f0d5c6f4 DT |
1221 | struct serio *serio = psmouse->ps2dev.serio; |
1222 | psmouse_ret_t rc = PSMOUSE_GOOD_DATA; | |
b7802c5c | 1223 | bool failed = false, enabled = false; |
f0d5c6f4 DT |
1224 | int i; |
1225 | ||
c14471dc | 1226 | mutex_lock(&psmouse_mutex); |
f0d5c6f4 DT |
1227 | |
1228 | if (psmouse->state != PSMOUSE_RESYNCING) | |
1229 | goto out; | |
1230 | ||
1231 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1232 | parent = serio_get_drvdata(serio->parent); | |
1233 | psmouse_deactivate(parent); | |
1234 | } | |
1235 | ||
1236 | /* | |
1237 | * Some mice don't ACK commands sent while they are in the middle of | |
1238 | * transmitting motion packet. To avoid delay we use ps2_sendbyte() | |
1239 | * instead of ps2_command() which would wait for 200ms for an ACK | |
1240 | * that may never come. | |
1241 | * As an additional quirk ALPS touchpads may not only forget to ACK | |
1242 | * disable command but will stop reporting taps, so if we see that | |
1243 | * mouse at least once ACKs disable we will do full reconnect if ACK | |
1244 | * is missing. | |
1245 | */ | |
1246 | psmouse->num_resyncs++; | |
1247 | ||
1248 | if (ps2_sendbyte(&psmouse->ps2dev, PSMOUSE_CMD_DISABLE, 20)) { | |
1249 | if (psmouse->num_resyncs < 3 || psmouse->acks_disable_command) | |
b7802c5c | 1250 | failed = true; |
f0d5c6f4 | 1251 | } else |
b7802c5c | 1252 | psmouse->acks_disable_command = true; |
f0d5c6f4 DT |
1253 | |
1254 | /* | |
1255 | * Poll the mouse. If it was reset the packet will be shorter than | |
1256 | * psmouse->pktsize and ps2_command will fail. We do not expect and | |
1257 | * do not handle scenario when mouse "upgrades" its protocol while | |
1258 | * disconnected since it would require additional delay. If we ever | |
1259 | * see a mouse that does it we'll adjust the code. | |
1260 | */ | |
1261 | if (!failed) { | |
1262 | if (psmouse->poll(psmouse)) | |
b7802c5c | 1263 | failed = true; |
f0d5c6f4 DT |
1264 | else { |
1265 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
1266 | for (i = 0; i < psmouse->pktsize; i++) { | |
1267 | psmouse->pktcnt++; | |
7d12e780 | 1268 | rc = psmouse->protocol_handler(psmouse); |
f0d5c6f4 DT |
1269 | if (rc != PSMOUSE_GOOD_DATA) |
1270 | break; | |
1271 | } | |
1272 | if (rc != PSMOUSE_FULL_PACKET) | |
b7802c5c | 1273 | failed = true; |
f0d5c6f4 DT |
1274 | psmouse_set_state(psmouse, PSMOUSE_RESYNCING); |
1275 | } | |
1276 | } | |
1277 | /* | |
1278 | * Now try to enable mouse. We try to do that even if poll failed and also | |
1279 | * repeat our attempts 5 times, otherwise we may be left out with disabled | |
1280 | * mouse. | |
1281 | */ | |
1282 | for (i = 0; i < 5; i++) { | |
1283 | if (!ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { | |
b7802c5c | 1284 | enabled = true; |
f0d5c6f4 DT |
1285 | break; |
1286 | } | |
1287 | msleep(200); | |
1288 | } | |
1289 | ||
1290 | if (!enabled) { | |
b5d21704 DT |
1291 | psmouse_warn(psmouse, "failed to re-enable mouse on %s\n", |
1292 | psmouse->ps2dev.serio->phys); | |
b7802c5c | 1293 | failed = true; |
f0d5c6f4 DT |
1294 | } |
1295 | ||
1296 | if (failed) { | |
1297 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
b5d21704 DT |
1298 | psmouse_info(psmouse, |
1299 | "resync failed, issuing reconnect request\n"); | |
f0d5c6f4 DT |
1300 | serio_reconnect(serio); |
1301 | } else | |
1302 | psmouse_set_state(psmouse, PSMOUSE_ACTIVATED); | |
1303 | ||
1304 | if (parent) | |
1305 | psmouse_activate(parent); | |
1306 | out: | |
c14471dc | 1307 | mutex_unlock(&psmouse_mutex); |
f0d5c6f4 | 1308 | } |
1da177e4 LT |
1309 | |
1310 | /* | |
1311 | * psmouse_cleanup() resets the mouse into power-on state. | |
1312 | */ | |
1313 | ||
1314 | static void psmouse_cleanup(struct serio *serio) | |
1315 | { | |
1316 | struct psmouse *psmouse = serio_get_drvdata(serio); | |
a1cec061 DT |
1317 | struct psmouse *parent = NULL; |
1318 | ||
1319 | mutex_lock(&psmouse_mutex); | |
1320 | ||
1321 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1322 | parent = serio_get_drvdata(serio->parent); | |
1323 | psmouse_deactivate(parent); | |
1324 | } | |
1325 | ||
a9f0c381 DT |
1326 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); |
1327 | ||
1328 | /* | |
1329 | * Disable stream mode so cleanup routine can proceed undisturbed. | |
1330 | */ | |
1331 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE)) | |
b5d21704 DT |
1332 | psmouse_warn(psmouse, "Failed to disable mouse on %s\n", |
1333 | psmouse->ps2dev.serio->phys); | |
a1cec061 DT |
1334 | |
1335 | if (psmouse->cleanup) | |
1336 | psmouse->cleanup(psmouse); | |
1da177e4 | 1337 | |
4a299bf5 DT |
1338 | /* |
1339 | * Reset the mouse to defaults (bare PS/2 protocol). | |
1340 | */ | |
1341 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); | |
a1cec061 DT |
1342 | |
1343 | /* | |
1344 | * Some boxes, such as HP nx7400, get terribly confused if mouse | |
1345 | * is not fully enabled before suspending/shutting down. | |
1346 | */ | |
1347 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE); | |
1348 | ||
1349 | if (parent) { | |
1350 | if (parent->pt_deactivate) | |
1351 | parent->pt_deactivate(parent); | |
1352 | ||
1353 | psmouse_activate(parent); | |
1354 | } | |
1355 | ||
1356 | mutex_unlock(&psmouse_mutex); | |
1da177e4 LT |
1357 | } |
1358 | ||
1359 | /* | |
1360 | * psmouse_disconnect() closes and frees. | |
1361 | */ | |
1362 | ||
1363 | static void psmouse_disconnect(struct serio *serio) | |
1364 | { | |
04df1925 DT |
1365 | struct psmouse *psmouse, *parent = NULL; |
1366 | ||
1367 | psmouse = serio_get_drvdata(serio); | |
1da177e4 | 1368 | |
cfe9e888 | 1369 | sysfs_remove_group(&serio->dev.kobj, &psmouse_attribute_group); |
1da177e4 | 1370 | |
c14471dc | 1371 | mutex_lock(&psmouse_mutex); |
04df1925 | 1372 | |
1da177e4 LT |
1373 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); |
1374 | ||
f0d5c6f4 | 1375 | /* make sure we don't have a resync in progress */ |
c14471dc | 1376 | mutex_unlock(&psmouse_mutex); |
f0d5c6f4 | 1377 | flush_workqueue(kpsmoused_wq); |
c14471dc | 1378 | mutex_lock(&psmouse_mutex); |
f0d5c6f4 | 1379 | |
1da177e4 LT |
1380 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { |
1381 | parent = serio_get_drvdata(serio->parent); | |
04df1925 | 1382 | psmouse_deactivate(parent); |
1da177e4 LT |
1383 | } |
1384 | ||
1385 | if (psmouse->disconnect) | |
1386 | psmouse->disconnect(psmouse); | |
1387 | ||
04df1925 DT |
1388 | if (parent && parent->pt_deactivate) |
1389 | parent->pt_deactivate(parent); | |
1390 | ||
1da177e4 LT |
1391 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); |
1392 | ||
1da177e4 LT |
1393 | serio_close(serio); |
1394 | serio_set_drvdata(serio, NULL); | |
2e5b636b | 1395 | input_unregister_device(psmouse->dev); |
1da177e4 | 1396 | kfree(psmouse); |
04df1925 DT |
1397 | |
1398 | if (parent) | |
1399 | psmouse_activate(parent); | |
1400 | ||
c14471dc | 1401 | mutex_unlock(&psmouse_mutex); |
1da177e4 LT |
1402 | } |
1403 | ||
315eb996 DT |
1404 | static int psmouse_switch_protocol(struct psmouse *psmouse, |
1405 | const struct psmouse_protocol *proto) | |
dbf4ccd6 | 1406 | { |
6b9d363c | 1407 | const struct psmouse_protocol *selected_proto; |
2e5b636b | 1408 | struct input_dev *input_dev = psmouse->dev; |
dbf4ccd6 | 1409 | |
28aa7f1c | 1410 | input_dev->dev.parent = &psmouse->ps2dev.serio->dev; |
dbf4ccd6 | 1411 | |
dbf4ccd6 | 1412 | if (proto && (proto->detect || proto->init)) { |
ee9dfd7a DT |
1413 | psmouse_apply_defaults(psmouse); |
1414 | ||
a62f0d27 | 1415 | if (proto->detect && proto->detect(psmouse, true) < 0) |
dbf4ccd6 DT |
1416 | return -1; |
1417 | ||
1418 | if (proto->init && proto->init(psmouse) < 0) | |
1419 | return -1; | |
1420 | ||
1421 | psmouse->type = proto->type; | |
6b9d363c DT |
1422 | selected_proto = proto; |
1423 | } else { | |
b7802c5c DT |
1424 | psmouse->type = psmouse_extensions(psmouse, |
1425 | psmouse_max_proto, true); | |
6b9d363c DT |
1426 | selected_proto = psmouse_protocol_by_type(psmouse->type); |
1427 | } | |
1428 | ||
1429 | psmouse->ignore_parity = selected_proto->ignore_parity; | |
dbf4ccd6 | 1430 | |
f0d5c6f4 DT |
1431 | /* |
1432 | * If mouse's packet size is 3 there is no point in polling the | |
1433 | * device in hopes to detect protocol reset - we won't get less | |
1434 | * than 3 bytes response anyhow. | |
1435 | */ | |
1436 | if (psmouse->pktsize == 3) | |
1437 | psmouse->resync_time = 0; | |
1438 | ||
1439 | /* | |
1440 | * Some smart KVMs fake response to POLL command returning just | |
1441 | * 3 bytes and messing up our resync logic, so if initial poll | |
1442 | * fails we won't try polling the device anymore. Hopefully | |
1443 | * such KVM will maintain initially selected protocol. | |
1444 | */ | |
1445 | if (psmouse->resync_time && psmouse->poll(psmouse)) | |
1446 | psmouse->resync_time = 0; | |
1447 | ||
08ffce45 | 1448 | snprintf(psmouse->devname, sizeof(psmouse->devname), "%s %s %s", |
6b9d363c | 1449 | selected_proto->name, psmouse->vendor, psmouse->name); |
dbf4ccd6 | 1450 | |
2e5b636b DT |
1451 | input_dev->name = psmouse->devname; |
1452 | input_dev->phys = psmouse->phys; | |
1453 | input_dev->id.bustype = BUS_I8042; | |
1454 | input_dev->id.vendor = 0x0002; | |
1455 | input_dev->id.product = psmouse->type; | |
1456 | input_dev->id.version = psmouse->model; | |
dbf4ccd6 DT |
1457 | |
1458 | return 0; | |
1459 | } | |
1460 | ||
1da177e4 LT |
1461 | /* |
1462 | * psmouse_connect() is a callback from the serio module when | |
1463 | * an unhandled serio port is found. | |
1464 | */ | |
1465 | static int psmouse_connect(struct serio *serio, struct serio_driver *drv) | |
1466 | { | |
1467 | struct psmouse *psmouse, *parent = NULL; | |
2e5b636b | 1468 | struct input_dev *input_dev; |
72155615 | 1469 | int retval = 0, error = -ENOMEM; |
1da177e4 | 1470 | |
c14471dc | 1471 | mutex_lock(&psmouse_mutex); |
04df1925 | 1472 | |
1da177e4 LT |
1473 | /* |
1474 | * If this is a pass-through port deactivate parent so the device | |
1475 | * connected to this port can be successfully identified | |
1476 | */ | |
1477 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1478 | parent = serio_get_drvdata(serio->parent); | |
1479 | psmouse_deactivate(parent); | |
1480 | } | |
1481 | ||
2e5b636b DT |
1482 | psmouse = kzalloc(sizeof(struct psmouse), GFP_KERNEL); |
1483 | input_dev = input_allocate_device(); | |
1484 | if (!psmouse || !input_dev) | |
72155615 | 1485 | goto err_free; |
1da177e4 | 1486 | |
1da177e4 | 1487 | ps2_init(&psmouse->ps2dev, serio); |
8bf020ee | 1488 | INIT_DELAYED_WORK(&psmouse->resync_work, psmouse_resync); |
2e5b636b | 1489 | psmouse->dev = input_dev; |
08ffce45 | 1490 | snprintf(psmouse->phys, sizeof(psmouse->phys), "%s/input0", serio->phys); |
dbf4ccd6 | 1491 | |
1da177e4 LT |
1492 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); |
1493 | ||
1494 | serio_set_drvdata(serio, psmouse); | |
1495 | ||
72155615 DT |
1496 | error = serio_open(serio, drv); |
1497 | if (error) | |
1498 | goto err_clear_drvdata; | |
1da177e4 LT |
1499 | |
1500 | if (psmouse_probe(psmouse) < 0) { | |
72155615 DT |
1501 | error = -ENODEV; |
1502 | goto err_close_serio; | |
1da177e4 LT |
1503 | } |
1504 | ||
1505 | psmouse->rate = psmouse_rate; | |
1506 | psmouse->resolution = psmouse_resolution; | |
1507 | psmouse->resetafter = psmouse_resetafter; | |
f0d5c6f4 | 1508 | psmouse->resync_time = parent ? 0 : psmouse_resync_time; |
1da177e4 | 1509 | psmouse->smartscroll = psmouse_smartscroll; |
1da177e4 | 1510 | |
dbf4ccd6 | 1511 | psmouse_switch_protocol(psmouse, NULL); |
1da177e4 | 1512 | |
1da177e4 | 1513 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); |
1da177e4 LT |
1514 | psmouse_initialize(psmouse); |
1515 | ||
72155615 DT |
1516 | error = input_register_device(psmouse->dev); |
1517 | if (error) | |
1518 | goto err_protocol_disconnect; | |
2e5b636b | 1519 | |
1da177e4 LT |
1520 | if (parent && parent->pt_activate) |
1521 | parent->pt_activate(parent); | |
1522 | ||
72155615 DT |
1523 | error = sysfs_create_group(&serio->dev.kobj, &psmouse_attribute_group); |
1524 | if (error) | |
1525 | goto err_pt_deactivate; | |
1da177e4 LT |
1526 | |
1527 | psmouse_activate(psmouse); | |
1528 | ||
72155615 | 1529 | out: |
04df1925 | 1530 | /* If this is a pass-through port the parent needs to be re-activated */ |
1da177e4 LT |
1531 | if (parent) |
1532 | psmouse_activate(parent); | |
1533 | ||
c14471dc | 1534 | mutex_unlock(&psmouse_mutex); |
1da177e4 | 1535 | return retval; |
72155615 DT |
1536 | |
1537 | err_pt_deactivate: | |
1538 | if (parent && parent->pt_deactivate) | |
1539 | parent->pt_deactivate(parent); | |
746b31a9 AS |
1540 | input_unregister_device(psmouse->dev); |
1541 | input_dev = NULL; /* so we don't try to free it below */ | |
72155615 DT |
1542 | err_protocol_disconnect: |
1543 | if (psmouse->disconnect) | |
1544 | psmouse->disconnect(psmouse); | |
1545 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
1546 | err_close_serio: | |
1547 | serio_close(serio); | |
1548 | err_clear_drvdata: | |
1549 | serio_set_drvdata(serio, NULL); | |
1550 | err_free: | |
1551 | input_free_device(input_dev); | |
1552 | kfree(psmouse); | |
1553 | ||
1554 | retval = error; | |
1555 | goto out; | |
1da177e4 LT |
1556 | } |
1557 | ||
1558 | ||
1559 | static int psmouse_reconnect(struct serio *serio) | |
1560 | { | |
1561 | struct psmouse *psmouse = serio_get_drvdata(serio); | |
1562 | struct psmouse *parent = NULL; | |
ef110b24 | 1563 | unsigned char type; |
1da177e4 LT |
1564 | int rc = -1; |
1565 | ||
c14471dc | 1566 | mutex_lock(&psmouse_mutex); |
04df1925 | 1567 | |
1da177e4 LT |
1568 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { |
1569 | parent = serio_get_drvdata(serio->parent); | |
1570 | psmouse_deactivate(parent); | |
1571 | } | |
1572 | ||
1573 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); | |
1574 | ||
1575 | if (psmouse->reconnect) { | |
1576 | if (psmouse->reconnect(psmouse)) | |
1577 | goto out; | |
ef110b24 DT |
1578 | } else { |
1579 | psmouse_reset(psmouse); | |
1580 | ||
1581 | if (psmouse_probe(psmouse) < 0) | |
1582 | goto out; | |
1583 | ||
1584 | type = psmouse_extensions(psmouse, psmouse_max_proto, false); | |
1585 | if (psmouse->type != type) | |
1586 | goto out; | |
b7802c5c | 1587 | } |
1da177e4 | 1588 | |
b5d21704 DT |
1589 | /* |
1590 | * OK, the device type (and capabilities) match the old one, | |
1591 | * we can continue using it, complete initialization | |
1da177e4 LT |
1592 | */ |
1593 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
1594 | ||
1595 | psmouse_initialize(psmouse); | |
1596 | ||
1597 | if (parent && parent->pt_activate) | |
1598 | parent->pt_activate(parent); | |
1599 | ||
1600 | psmouse_activate(psmouse); | |
1601 | rc = 0; | |
1602 | ||
1603 | out: | |
1604 | /* If this is a pass-through port the parent waits to be activated */ | |
1605 | if (parent) | |
1606 | psmouse_activate(parent); | |
1607 | ||
c14471dc | 1608 | mutex_unlock(&psmouse_mutex); |
1da177e4 LT |
1609 | return rc; |
1610 | } | |
1611 | ||
1612 | static struct serio_device_id psmouse_serio_ids[] = { | |
1613 | { | |
1614 | .type = SERIO_8042, | |
1615 | .proto = SERIO_ANY, | |
1616 | .id = SERIO_ANY, | |
1617 | .extra = SERIO_ANY, | |
1618 | }, | |
1619 | { | |
1620 | .type = SERIO_PS_PSTHRU, | |
1621 | .proto = SERIO_ANY, | |
1622 | .id = SERIO_ANY, | |
1623 | .extra = SERIO_ANY, | |
1624 | }, | |
1625 | { 0 } | |
1626 | }; | |
1627 | ||
1628 | MODULE_DEVICE_TABLE(serio, psmouse_serio_ids); | |
1629 | ||
1630 | static struct serio_driver psmouse_drv = { | |
1631 | .driver = { | |
1632 | .name = "psmouse", | |
1633 | }, | |
1634 | .description = DRIVER_DESC, | |
1635 | .id_table = psmouse_serio_ids, | |
1636 | .interrupt = psmouse_interrupt, | |
1637 | .connect = psmouse_connect, | |
1638 | .reconnect = psmouse_reconnect, | |
1639 | .disconnect = psmouse_disconnect, | |
1640 | .cleanup = psmouse_cleanup, | |
1641 | }; | |
1642 | ||
cfe9e888 DT |
1643 | ssize_t psmouse_attr_show_helper(struct device *dev, struct device_attribute *devattr, |
1644 | char *buf) | |
1da177e4 LT |
1645 | { |
1646 | struct serio *serio = to_serio_port(dev); | |
cfe9e888 DT |
1647 | struct psmouse_attribute *attr = to_psmouse_attr(devattr); |
1648 | struct psmouse *psmouse; | |
1da177e4 | 1649 | |
cfe9e888 DT |
1650 | psmouse = serio_get_drvdata(serio); |
1651 | ||
59b01513 | 1652 | return attr->show(psmouse, attr->data, buf); |
1da177e4 LT |
1653 | } |
1654 | ||
cfe9e888 DT |
1655 | ssize_t psmouse_attr_set_helper(struct device *dev, struct device_attribute *devattr, |
1656 | const char *buf, size_t count) | |
1da177e4 LT |
1657 | { |
1658 | struct serio *serio = to_serio_port(dev); | |
cfe9e888 DT |
1659 | struct psmouse_attribute *attr = to_psmouse_attr(devattr); |
1660 | struct psmouse *psmouse, *parent = NULL; | |
1da177e4 LT |
1661 | int retval; |
1662 | ||
c14471dc | 1663 | retval = mutex_lock_interruptible(&psmouse_mutex); |
04df1925 | 1664 | if (retval) |
59b01513 | 1665 | goto out; |
04df1925 | 1666 | |
cfe9e888 DT |
1667 | psmouse = serio_get_drvdata(serio); |
1668 | ||
68d48221 AS |
1669 | if (attr->protect) { |
1670 | if (psmouse->state == PSMOUSE_IGNORE) { | |
1671 | retval = -ENODEV; | |
1672 | goto out_unlock; | |
1673 | } | |
1da177e4 | 1674 | |
68d48221 AS |
1675 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { |
1676 | parent = serio_get_drvdata(serio->parent); | |
1677 | psmouse_deactivate(parent); | |
1678 | } | |
dbf4ccd6 | 1679 | |
68d48221 AS |
1680 | psmouse_deactivate(psmouse); |
1681 | } | |
1da177e4 | 1682 | |
cfe9e888 | 1683 | retval = attr->set(psmouse, attr->data, buf, count); |
1da177e4 | 1684 | |
68d48221 AS |
1685 | if (attr->protect) { |
1686 | if (retval != -ENODEV) | |
1687 | psmouse_activate(psmouse); | |
dbf4ccd6 | 1688 | |
68d48221 AS |
1689 | if (parent) |
1690 | psmouse_activate(parent); | |
1691 | } | |
1da177e4 | 1692 | |
c14471dc IM |
1693 | out_unlock: |
1694 | mutex_unlock(&psmouse_mutex); | |
59b01513 | 1695 | out: |
1da177e4 LT |
1696 | return retval; |
1697 | } | |
1698 | ||
cfe9e888 DT |
1699 | static ssize_t psmouse_show_int_attr(struct psmouse *psmouse, void *offset, char *buf) |
1700 | { | |
eb5d5829 | 1701 | unsigned int *field = (unsigned int *)((char *)psmouse + (size_t)offset); |
cfe9e888 | 1702 | |
eb5d5829 | 1703 | return sprintf(buf, "%u\n", *field); |
cfe9e888 DT |
1704 | } |
1705 | ||
1706 | static ssize_t psmouse_set_int_attr(struct psmouse *psmouse, void *offset, const char *buf, size_t count) | |
1707 | { | |
eb5d5829 | 1708 | unsigned int *field = (unsigned int *)((char *)psmouse + (size_t)offset); |
76496e7a JD |
1709 | unsigned int value; |
1710 | int err; | |
cfe9e888 | 1711 | |
76496e7a JD |
1712 | err = kstrtouint(buf, 10, &value); |
1713 | if (err) | |
1714 | return err; | |
eb5d5829 | 1715 | |
cfe9e888 DT |
1716 | *field = value; |
1717 | ||
1718 | return count; | |
1719 | } | |
1720 | ||
1721 | static ssize_t psmouse_attr_show_protocol(struct psmouse *psmouse, void *data, char *buf) | |
dbf4ccd6 DT |
1722 | { |
1723 | return sprintf(buf, "%s\n", psmouse_protocol_by_type(psmouse->type)->name); | |
1724 | } | |
1725 | ||
cfe9e888 | 1726 | static ssize_t psmouse_attr_set_protocol(struct psmouse *psmouse, void *data, const char *buf, size_t count) |
dbf4ccd6 DT |
1727 | { |
1728 | struct serio *serio = psmouse->ps2dev.serio; | |
1729 | struct psmouse *parent = NULL; | |
72155615 DT |
1730 | struct input_dev *old_dev, *new_dev; |
1731 | const struct psmouse_protocol *proto, *old_proto; | |
1732 | int error; | |
dbf4ccd6 DT |
1733 | int retry = 0; |
1734 | ||
72155615 DT |
1735 | proto = psmouse_protocol_by_name(buf, count); |
1736 | if (!proto) | |
dbf4ccd6 DT |
1737 | return -EINVAL; |
1738 | ||
1739 | if (psmouse->type == proto->type) | |
1740 | return count; | |
1741 | ||
72155615 DT |
1742 | new_dev = input_allocate_device(); |
1743 | if (!new_dev) | |
2e5b636b DT |
1744 | return -ENOMEM; |
1745 | ||
09822582 | 1746 | while (!list_empty(&serio->children)) { |
dbf4ccd6 | 1747 | if (++retry > 3) { |
b5d21704 DT |
1748 | psmouse_warn(psmouse, |
1749 | "failed to destroy children ports, protocol change aborted.\n"); | |
2e5b636b | 1750 | input_free_device(new_dev); |
dbf4ccd6 DT |
1751 | return -EIO; |
1752 | } | |
1753 | ||
c14471dc | 1754 | mutex_unlock(&psmouse_mutex); |
dbf4ccd6 | 1755 | serio_unregister_child_port(serio); |
c14471dc | 1756 | mutex_lock(&psmouse_mutex); |
dbf4ccd6 | 1757 | |
2e5b636b DT |
1758 | if (serio->drv != &psmouse_drv) { |
1759 | input_free_device(new_dev); | |
dbf4ccd6 | 1760 | return -ENODEV; |
2e5b636b | 1761 | } |
dbf4ccd6 | 1762 | |
2e5b636b DT |
1763 | if (psmouse->type == proto->type) { |
1764 | input_free_device(new_dev); | |
dbf4ccd6 | 1765 | return count; /* switched by other thread */ |
2e5b636b | 1766 | } |
dbf4ccd6 DT |
1767 | } |
1768 | ||
1769 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1770 | parent = serio_get_drvdata(serio->parent); | |
1771 | if (parent->pt_deactivate) | |
1772 | parent->pt_deactivate(parent); | |
1773 | } | |
1774 | ||
72155615 DT |
1775 | old_dev = psmouse->dev; |
1776 | old_proto = psmouse_protocol_by_type(psmouse->type); | |
1777 | ||
dbf4ccd6 DT |
1778 | if (psmouse->disconnect) |
1779 | psmouse->disconnect(psmouse); | |
1780 | ||
1781 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
dbf4ccd6 | 1782 | |
2e5b636b | 1783 | psmouse->dev = new_dev; |
dbf4ccd6 DT |
1784 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); |
1785 | ||
1786 | if (psmouse_switch_protocol(psmouse, proto) < 0) { | |
1787 | psmouse_reset(psmouse); | |
1788 | /* default to PSMOUSE_PS2 */ | |
1789 | psmouse_switch_protocol(psmouse, &psmouse_protocols[0]); | |
1790 | } | |
1791 | ||
1792 | psmouse_initialize(psmouse); | |
1793 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
1794 | ||
72155615 DT |
1795 | error = input_register_device(psmouse->dev); |
1796 | if (error) { | |
1797 | if (psmouse->disconnect) | |
1798 | psmouse->disconnect(psmouse); | |
1799 | ||
1800 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
1801 | input_free_device(new_dev); | |
1802 | psmouse->dev = old_dev; | |
1803 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); | |
1804 | psmouse_switch_protocol(psmouse, old_proto); | |
1805 | psmouse_initialize(psmouse); | |
1806 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
1807 | ||
1808 | return error; | |
1809 | } | |
1810 | ||
1811 | input_unregister_device(old_dev); | |
dbf4ccd6 DT |
1812 | |
1813 | if (parent && parent->pt_activate) | |
1814 | parent->pt_activate(parent); | |
1815 | ||
1816 | return count; | |
1817 | } | |
1818 | ||
cfe9e888 | 1819 | static ssize_t psmouse_attr_set_rate(struct psmouse *psmouse, void *data, const char *buf, size_t count) |
1da177e4 | 1820 | { |
76496e7a JD |
1821 | unsigned int value; |
1822 | int err; | |
1da177e4 | 1823 | |
76496e7a JD |
1824 | err = kstrtouint(buf, 10, &value); |
1825 | if (err) | |
1826 | return err; | |
1da177e4 LT |
1827 | |
1828 | psmouse->set_rate(psmouse, value); | |
1829 | return count; | |
1830 | } | |
1831 | ||
cfe9e888 | 1832 | static ssize_t psmouse_attr_set_resolution(struct psmouse *psmouse, void *data, const char *buf, size_t count) |
1da177e4 | 1833 | { |
76496e7a JD |
1834 | unsigned int value; |
1835 | int err; | |
1da177e4 | 1836 | |
76496e7a JD |
1837 | err = kstrtouint(buf, 10, &value); |
1838 | if (err) | |
1839 | return err; | |
1da177e4 LT |
1840 | |
1841 | psmouse->set_resolution(psmouse, value); | |
1842 | return count; | |
1843 | } | |
1844 | ||
1da177e4 | 1845 | |
9bbb9e5a | 1846 | static int psmouse_set_maxproto(const char *val, const struct kernel_param *kp) |
1da177e4 | 1847 | { |
e38de678 | 1848 | const struct psmouse_protocol *proto; |
1da177e4 LT |
1849 | |
1850 | if (!val) | |
1851 | return -EINVAL; | |
1852 | ||
dbf4ccd6 | 1853 | proto = psmouse_protocol_by_name(val, strlen(val)); |
1da177e4 | 1854 | |
dbf4ccd6 DT |
1855 | if (!proto || !proto->maxproto) |
1856 | return -EINVAL; | |
1da177e4 | 1857 | |
dbf4ccd6 | 1858 | *((unsigned int *)kp->arg) = proto->type; |
1da177e4 | 1859 | |
541e316a | 1860 | return 0; |
1da177e4 LT |
1861 | } |
1862 | ||
9bbb9e5a | 1863 | static int psmouse_get_maxproto(char *buffer, const struct kernel_param *kp) |
1da177e4 | 1864 | { |
dbf4ccd6 DT |
1865 | int type = *((unsigned int *)kp->arg); |
1866 | ||
3d4c3aa9 | 1867 | return sprintf(buffer, "%s", psmouse_protocol_by_type(type)->name); |
1da177e4 LT |
1868 | } |
1869 | ||
1870 | static int __init psmouse_init(void) | |
1871 | { | |
153a9df0 AM |
1872 | int err; |
1873 | ||
7705d548 DT |
1874 | lifebook_module_init(); |
1875 | synaptics_module_init(); | |
ca94ec43 | 1876 | hgpk_module_init(); |
7705d548 | 1877 | |
f0d5c6f4 DT |
1878 | kpsmoused_wq = create_singlethread_workqueue("kpsmoused"); |
1879 | if (!kpsmoused_wq) { | |
b5d21704 | 1880 | pr_err("failed to create kpsmoused workqueue\n"); |
f0d5c6f4 DT |
1881 | return -ENOMEM; |
1882 | } | |
1883 | ||
153a9df0 AM |
1884 | err = serio_register_driver(&psmouse_drv); |
1885 | if (err) | |
1886 | destroy_workqueue(kpsmoused_wq); | |
f0d5c6f4 | 1887 | |
153a9df0 | 1888 | return err; |
1da177e4 LT |
1889 | } |
1890 | ||
1891 | static void __exit psmouse_exit(void) | |
1892 | { | |
1893 | serio_unregister_driver(&psmouse_drv); | |
f0d5c6f4 | 1894 | destroy_workqueue(kpsmoused_wq); |
1da177e4 LT |
1895 | } |
1896 | ||
1897 | module_init(psmouse_init); | |
1898 | module_exit(psmouse_exit); |