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 | ||
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" |
1da177e4 LT |
37 | |
38 | #define DRIVER_DESC "PS/2 mouse driver" | |
39 | ||
40 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>"); | |
41 | MODULE_DESCRIPTION(DRIVER_DESC); | |
42 | MODULE_LICENSE("GPL"); | |
43 | ||
dbf4ccd6 | 44 | static unsigned int psmouse_max_proto = PSMOUSE_AUTO; |
9bbb9e5a RR |
45 | static int psmouse_set_maxproto(const char *val, const struct kernel_param *); |
46 | static int psmouse_get_maxproto(char *buffer, const struct kernel_param *kp); | |
47 | static struct kernel_param_ops param_ops_proto_abbrev = { | |
48 | .set = psmouse_set_maxproto, | |
49 | .get = psmouse_get_maxproto, | |
50 | }; | |
1da177e4 | 51 | #define param_check_proto_abbrev(name, p) __param_check(name, p, unsigned int) |
1da177e4 | 52 | module_param_named(proto, psmouse_max_proto, proto_abbrev, 0644); |
dbf4ccd6 | 53 | MODULE_PARM_DESC(proto, "Highest protocol extension to probe (bare, imps, exps, any). Useful for KVM switches."); |
1da177e4 LT |
54 | |
55 | static unsigned int psmouse_resolution = 200; | |
56 | module_param_named(resolution, psmouse_resolution, uint, 0644); | |
57 | MODULE_PARM_DESC(resolution, "Resolution, in dpi."); | |
58 | ||
59 | static unsigned int psmouse_rate = 100; | |
60 | module_param_named(rate, psmouse_rate, uint, 0644); | |
61 | MODULE_PARM_DESC(rate, "Report rate, in reports per second."); | |
62 | ||
63 | static unsigned int psmouse_smartscroll = 1; | |
64 | module_param_named(smartscroll, psmouse_smartscroll, bool, 0644); | |
65 | MODULE_PARM_DESC(smartscroll, "Logitech Smartscroll autorepeat, 1 = enabled (default), 0 = disabled."); | |
66 | ||
f0d5c6f4 | 67 | static unsigned int psmouse_resetafter = 5; |
1da177e4 LT |
68 | module_param_named(resetafter, psmouse_resetafter, uint, 0644); |
69 | MODULE_PARM_DESC(resetafter, "Reset device after so many bad packets (0 = never)."); | |
70 | ||
8bd0ee93 | 71 | static unsigned int psmouse_resync_time; |
f0d5c6f4 DT |
72 | module_param_named(resync_time, psmouse_resync_time, uint, 0644); |
73 | MODULE_PARM_DESC(resync_time, "How long can mouse stay idle before forcing resync (in seconds, 0 = never)."); | |
74 | ||
cfe9e888 DT |
75 | PSMOUSE_DEFINE_ATTR(protocol, S_IWUSR | S_IRUGO, |
76 | NULL, | |
77 | psmouse_attr_show_protocol, psmouse_attr_set_protocol); | |
78 | PSMOUSE_DEFINE_ATTR(rate, S_IWUSR | S_IRUGO, | |
79 | (void *) offsetof(struct psmouse, rate), | |
80 | psmouse_show_int_attr, psmouse_attr_set_rate); | |
81 | PSMOUSE_DEFINE_ATTR(resolution, S_IWUSR | S_IRUGO, | |
82 | (void *) offsetof(struct psmouse, resolution), | |
83 | psmouse_show_int_attr, psmouse_attr_set_resolution); | |
84 | PSMOUSE_DEFINE_ATTR(resetafter, S_IWUSR | S_IRUGO, | |
85 | (void *) offsetof(struct psmouse, resetafter), | |
86 | psmouse_show_int_attr, psmouse_set_int_attr); | |
f0d5c6f4 DT |
87 | PSMOUSE_DEFINE_ATTR(resync_time, S_IWUSR | S_IRUGO, |
88 | (void *) offsetof(struct psmouse, resync_time), | |
89 | psmouse_show_int_attr, psmouse_set_int_attr); | |
cfe9e888 DT |
90 | |
91 | static struct attribute *psmouse_attributes[] = { | |
92 | &psmouse_attr_protocol.dattr.attr, | |
93 | &psmouse_attr_rate.dattr.attr, | |
94 | &psmouse_attr_resolution.dattr.attr, | |
95 | &psmouse_attr_resetafter.dattr.attr, | |
f0d5c6f4 | 96 | &psmouse_attr_resync_time.dattr.attr, |
cfe9e888 DT |
97 | NULL |
98 | }; | |
99 | ||
100 | static struct attribute_group psmouse_attribute_group = { | |
101 | .attrs = psmouse_attributes, | |
102 | }; | |
1da177e4 | 103 | |
04df1925 | 104 | /* |
c14471dc | 105 | * psmouse_mutex protects all operations changing state of mouse |
04df1925 DT |
106 | * (connecting, disconnecting, changing rate or resolution via |
107 | * sysfs). We could use a per-device semaphore but since there | |
108 | * rarely more than one PS/2 mouse connected and since semaphore | |
109 | * is taken in "slow" paths it is not worth it. | |
110 | */ | |
c14471dc | 111 | static DEFINE_MUTEX(psmouse_mutex); |
04df1925 | 112 | |
f0d5c6f4 DT |
113 | static struct workqueue_struct *kpsmoused_wq; |
114 | ||
dbf4ccd6 DT |
115 | struct psmouse_protocol { |
116 | enum psmouse_type type; | |
b7802c5c | 117 | bool maxproto; |
6b9d363c | 118 | bool ignore_parity; /* Protocol should ignore parity errors from KBC */ |
e38de678 HD |
119 | const char *name; |
120 | const char *alias; | |
b7802c5c | 121 | int (*detect)(struct psmouse *, bool); |
dbf4ccd6 DT |
122 | int (*init)(struct psmouse *); |
123 | }; | |
1da177e4 LT |
124 | |
125 | /* | |
126 | * psmouse_process_byte() analyzes the PS/2 data stream and reports | |
127 | * relevant events to the input module once full packet has arrived. | |
128 | */ | |
129 | ||
7968a5dd | 130 | psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse) |
1da177e4 | 131 | { |
2e5b636b | 132 | struct input_dev *dev = psmouse->dev; |
1da177e4 LT |
133 | unsigned char *packet = psmouse->packet; |
134 | ||
135 | if (psmouse->pktcnt < psmouse->pktsize) | |
136 | return PSMOUSE_GOOD_DATA; | |
137 | ||
138 | /* | |
139 | * Full packet accumulated, process it | |
140 | */ | |
141 | ||
1da177e4 LT |
142 | /* |
143 | * Scroll wheel on IntelliMice, scroll buttons on NetMice | |
144 | */ | |
145 | ||
146 | if (psmouse->type == PSMOUSE_IMPS || psmouse->type == PSMOUSE_GENPS) | |
147 | input_report_rel(dev, REL_WHEEL, -(signed char) packet[3]); | |
148 | ||
149 | /* | |
150 | * Scroll wheel and buttons on IntelliMouse Explorer | |
151 | */ | |
152 | ||
153 | if (psmouse->type == PSMOUSE_IMEX) { | |
b0c9ad8e | 154 | switch (packet[3] & 0xC0) { |
a62f0d27 DT |
155 | case 0x80: /* vertical scroll on IntelliMouse Explorer 4.0 */ |
156 | input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31)); | |
157 | break; | |
158 | case 0x40: /* horizontal scroll on IntelliMouse Explorer 4.0 */ | |
159 | input_report_rel(dev, REL_HWHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31)); | |
160 | break; | |
161 | case 0x00: | |
162 | case 0xC0: | |
163 | input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 8) - (int) (packet[3] & 7)); | |
164 | input_report_key(dev, BTN_SIDE, (packet[3] >> 4) & 1); | |
165 | input_report_key(dev, BTN_EXTRA, (packet[3] >> 5) & 1); | |
166 | break; | |
b0c9ad8e | 167 | } |
1da177e4 LT |
168 | } |
169 | ||
170 | /* | |
171 | * Extra buttons on Genius NewNet 3D | |
172 | */ | |
173 | ||
174 | if (psmouse->type == PSMOUSE_GENPS) { | |
175 | input_report_key(dev, BTN_SIDE, (packet[0] >> 6) & 1); | |
176 | input_report_key(dev, BTN_EXTRA, (packet[0] >> 7) & 1); | |
177 | } | |
178 | ||
179 | /* | |
180 | * Extra button on ThinkingMouse | |
181 | */ | |
182 | if (psmouse->type == PSMOUSE_THINKPS) { | |
183 | input_report_key(dev, BTN_EXTRA, (packet[0] >> 3) & 1); | |
184 | /* Without this bit of weirdness moving up gives wildly high Y changes. */ | |
185 | packet[1] |= (packet[0] & 0x40) << 1; | |
186 | } | |
187 | ||
aea6a461 AR |
188 | /* |
189 | * Cortron PS2 Trackball reports SIDE button on the 4th bit of the first | |
190 | * byte. | |
191 | */ | |
192 | if (psmouse->type == PSMOUSE_CORTRON) { | |
193 | input_report_key(dev, BTN_SIDE, (packet[0] >> 3) & 1); | |
194 | packet[0] |= 0x08; | |
195 | } | |
196 | ||
1da177e4 LT |
197 | /* |
198 | * Generic PS/2 Mouse | |
199 | */ | |
200 | ||
201 | input_report_key(dev, BTN_LEFT, packet[0] & 1); | |
202 | input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1); | |
203 | input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1); | |
204 | ||
205 | input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0); | |
206 | input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0); | |
207 | ||
208 | input_sync(dev); | |
209 | ||
210 | return PSMOUSE_FULL_PACKET; | |
211 | } | |
212 | ||
8bf020ee AS |
213 | void psmouse_queue_work(struct psmouse *psmouse, struct delayed_work *work, |
214 | unsigned long delay) | |
215 | { | |
216 | queue_delayed_work(kpsmoused_wq, work, delay); | |
217 | } | |
218 | ||
1da177e4 | 219 | /* |
f0d5c6f4 DT |
220 | * __psmouse_set_state() sets new psmouse state and resets all flags. |
221 | */ | |
222 | ||
223 | static inline void __psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state) | |
224 | { | |
225 | psmouse->state = new_state; | |
b7802c5c | 226 | psmouse->pktcnt = psmouse->out_of_sync_cnt = 0; |
f0d5c6f4 DT |
227 | psmouse->ps2dev.flags = 0; |
228 | psmouse->last = jiffies; | |
229 | } | |
230 | ||
231 | ||
232 | /* | |
233 | * psmouse_set_state() sets new psmouse state and resets all flags and | |
234 | * counters while holding serio lock so fighting with interrupt handler | |
235 | * is not a concern. | |
236 | */ | |
237 | ||
a48cf5f3 | 238 | void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state) |
f0d5c6f4 DT |
239 | { |
240 | serio_pause_rx(psmouse->ps2dev.serio); | |
241 | __psmouse_set_state(psmouse, new_state); | |
242 | serio_continue_rx(psmouse->ps2dev.serio); | |
243 | } | |
244 | ||
245 | /* | |
246 | * psmouse_handle_byte() processes one byte of the input data stream | |
247 | * by calling corresponding protocol handler. | |
248 | */ | |
249 | ||
7d12e780 | 250 | static int psmouse_handle_byte(struct psmouse *psmouse) |
f0d5c6f4 | 251 | { |
7d12e780 | 252 | psmouse_ret_t rc = psmouse->protocol_handler(psmouse); |
f0d5c6f4 DT |
253 | |
254 | switch (rc) { | |
a62f0d27 DT |
255 | case PSMOUSE_BAD_DATA: |
256 | if (psmouse->state == PSMOUSE_ACTIVATED) { | |
b5d21704 DT |
257 | psmouse_warn(psmouse, |
258 | "%s at %s lost sync at byte %d\n", | |
259 | psmouse->name, psmouse->phys, | |
260 | psmouse->pktcnt); | |
a62f0d27 DT |
261 | if (++psmouse->out_of_sync_cnt == psmouse->resetafter) { |
262 | __psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
b5d21704 DT |
263 | psmouse_notice(psmouse, |
264 | "issuing reconnect request\n"); | |
a62f0d27 DT |
265 | serio_reconnect(psmouse->ps2dev.serio); |
266 | return -1; | |
f0d5c6f4 | 267 | } |
a62f0d27 DT |
268 | } |
269 | psmouse->pktcnt = 0; | |
270 | break; | |
271 | ||
272 | case PSMOUSE_FULL_PACKET: | |
273 | psmouse->pktcnt = 0; | |
274 | if (psmouse->out_of_sync_cnt) { | |
275 | psmouse->out_of_sync_cnt = 0; | |
b5d21704 DT |
276 | psmouse_notice(psmouse, |
277 | "%s at %s - driver resynced.\n", | |
278 | psmouse->name, psmouse->phys); | |
a62f0d27 DT |
279 | } |
280 | break; | |
f0d5c6f4 | 281 | |
a62f0d27 DT |
282 | case PSMOUSE_GOOD_DATA: |
283 | break; | |
f0d5c6f4 DT |
284 | } |
285 | return 0; | |
286 | } | |
287 | ||
288 | /* | |
289 | * psmouse_interrupt() handles incoming characters, either passing them | |
290 | * for normal processing or gathering them as command response. | |
1da177e4 LT |
291 | */ |
292 | ||
293 | static irqreturn_t psmouse_interrupt(struct serio *serio, | |
7d12e780 | 294 | unsigned char data, unsigned int flags) |
1da177e4 LT |
295 | { |
296 | struct psmouse *psmouse = serio_get_drvdata(serio); | |
1da177e4 LT |
297 | |
298 | if (psmouse->state == PSMOUSE_IGNORE) | |
299 | goto out; | |
300 | ||
6b9d363c DT |
301 | if (unlikely((flags & SERIO_TIMEOUT) || |
302 | ((flags & SERIO_PARITY) && !psmouse->ignore_parity))) { | |
303 | ||
1da177e4 | 304 | if (psmouse->state == PSMOUSE_ACTIVATED) |
b5d21704 DT |
305 | psmouse_warn(psmouse, |
306 | "bad data from KBC -%s%s\n", | |
307 | flags & SERIO_TIMEOUT ? " timeout" : "", | |
308 | flags & SERIO_PARITY ? " bad parity" : ""); | |
1da177e4 LT |
309 | ps2_cmd_aborted(&psmouse->ps2dev); |
310 | goto out; | |
311 | } | |
312 | ||
313 | if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_ACK)) | |
314 | if (ps2_handle_ack(&psmouse->ps2dev, data)) | |
315 | goto out; | |
316 | ||
317 | if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_CMD)) | |
318 | if (ps2_handle_response(&psmouse->ps2dev, data)) | |
319 | goto out; | |
320 | ||
f0d5c6f4 | 321 | if (psmouse->state <= PSMOUSE_RESYNCING) |
1da177e4 LT |
322 | goto out; |
323 | ||
324 | if (psmouse->state == PSMOUSE_ACTIVATED && | |
325 | psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) { | |
b5d21704 DT |
326 | psmouse_info(psmouse, "%s at %s lost synchronization, throwing %d bytes away.\n", |
327 | psmouse->name, psmouse->phys, psmouse->pktcnt); | |
f0d5c6f4 DT |
328 | psmouse->badbyte = psmouse->packet[0]; |
329 | __psmouse_set_state(psmouse, PSMOUSE_RESYNCING); | |
8bf020ee | 330 | psmouse_queue_work(psmouse, &psmouse->resync_work, 0); |
f0d5c6f4 | 331 | goto out; |
1da177e4 LT |
332 | } |
333 | ||
1da177e4 | 334 | psmouse->packet[psmouse->pktcnt++] = data; |
f0d5c6f4 DT |
335 | /* |
336 | * Check if this is a new device announcement (0xAA 0x00) | |
337 | */ | |
338 | if (unlikely(psmouse->packet[0] == PSMOUSE_RET_BAT && psmouse->pktcnt <= 2)) { | |
89c9b480 DT |
339 | if (psmouse->pktcnt == 1) { |
340 | psmouse->last = jiffies; | |
1da177e4 | 341 | goto out; |
89c9b480 | 342 | } |
1da177e4 | 343 | |
535650fd ZH |
344 | if (psmouse->packet[1] == PSMOUSE_RET_ID || |
345 | (psmouse->type == PSMOUSE_HGPK && | |
346 | psmouse->packet[1] == PSMOUSE_RET_BAT)) { | |
f0d5c6f4 DT |
347 | __psmouse_set_state(psmouse, PSMOUSE_IGNORE); |
348 | serio_reconnect(serio); | |
349 | goto out; | |
1da177e4 | 350 | } |
f0d5c6f4 DT |
351 | /* |
352 | * Not a new device, try processing first byte normally | |
353 | */ | |
354 | psmouse->pktcnt = 1; | |
7d12e780 | 355 | if (psmouse_handle_byte(psmouse)) |
f0d5c6f4 | 356 | goto out; |
1da177e4 | 357 | |
f0d5c6f4 DT |
358 | psmouse->packet[psmouse->pktcnt++] = data; |
359 | } | |
1da177e4 | 360 | |
f0d5c6f4 DT |
361 | /* |
362 | * See if we need to force resync because mouse was idle for too long | |
363 | */ | |
364 | if (psmouse->state == PSMOUSE_ACTIVATED && | |
365 | psmouse->pktcnt == 1 && psmouse->resync_time && | |
366 | time_after(jiffies, psmouse->last + psmouse->resync_time * HZ)) { | |
367 | psmouse->badbyte = psmouse->packet[0]; | |
368 | __psmouse_set_state(psmouse, PSMOUSE_RESYNCING); | |
8bf020ee | 369 | psmouse_queue_work(psmouse, &psmouse->resync_work, 0); |
f0d5c6f4 DT |
370 | goto out; |
371 | } | |
1da177e4 | 372 | |
f0d5c6f4 | 373 | psmouse->last = jiffies; |
7d12e780 | 374 | psmouse_handle_byte(psmouse); |
1da177e4 | 375 | |
f0d5c6f4 | 376 | out: |
1da177e4 LT |
377 | return IRQ_HANDLED; |
378 | } | |
379 | ||
380 | ||
381 | /* | |
382 | * psmouse_sliced_command() sends an extended PS/2 command to the mouse | |
383 | * using sliced syntax, understood by advanced devices, such as Logitech | |
384 | * or Synaptics touchpads. The command is encoded as: | |
385 | * 0xE6 0xE8 rr 0xE8 ss 0xE8 tt 0xE8 uu where (rr*64)+(ss*16)+(tt*4)+uu | |
386 | * is the command. | |
387 | */ | |
388 | int psmouse_sliced_command(struct psmouse *psmouse, unsigned char command) | |
389 | { | |
390 | int i; | |
391 | ||
392 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11)) | |
393 | return -1; | |
394 | ||
395 | for (i = 6; i >= 0; i -= 2) { | |
396 | unsigned char d = (command >> i) & 3; | |
397 | if (ps2_command(&psmouse->ps2dev, &d, PSMOUSE_CMD_SETRES)) | |
398 | return -1; | |
399 | } | |
400 | ||
401 | return 0; | |
402 | } | |
403 | ||
404 | ||
405 | /* | |
406 | * psmouse_reset() resets the mouse into power-on state. | |
407 | */ | |
408 | int psmouse_reset(struct psmouse *psmouse) | |
409 | { | |
410 | unsigned char param[2]; | |
411 | ||
412 | if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_RESET_BAT)) | |
413 | return -1; | |
414 | ||
415 | if (param[0] != PSMOUSE_RET_BAT && param[1] != PSMOUSE_RET_ID) | |
416 | return -1; | |
417 | ||
418 | return 0; | |
419 | } | |
420 | ||
421 | ||
422 | /* | |
423 | * Genius NetMouse magic init. | |
424 | */ | |
b7802c5c | 425 | static int genius_detect(struct psmouse *psmouse, bool set_properties) |
1da177e4 LT |
426 | { |
427 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
428 | unsigned char param[4]; | |
429 | ||
430 | param[0] = 3; | |
431 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); | |
432 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
433 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
434 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
435 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); | |
436 | ||
437 | if (param[0] != 0x00 || param[1] != 0x33 || param[2] != 0x55) | |
438 | return -1; | |
439 | ||
440 | if (set_properties) { | |
315eb996 | 441 | __set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
b7802c5c DT |
442 | __set_bit(BTN_EXTRA, psmouse->dev->keybit); |
443 | __set_bit(BTN_SIDE, psmouse->dev->keybit); | |
444 | __set_bit(REL_WHEEL, psmouse->dev->relbit); | |
1da177e4 LT |
445 | |
446 | psmouse->vendor = "Genius"; | |
a3f3f317 | 447 | psmouse->name = "Mouse"; |
1da177e4 LT |
448 | psmouse->pktsize = 4; |
449 | } | |
450 | ||
451 | return 0; | |
452 | } | |
453 | ||
454 | /* | |
455 | * IntelliMouse magic init. | |
456 | */ | |
b7802c5c | 457 | static int intellimouse_detect(struct psmouse *psmouse, bool set_properties) |
1da177e4 LT |
458 | { |
459 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
460 | unsigned char param[2]; | |
461 | ||
462 | param[0] = 200; | |
463 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
464 | param[0] = 100; | |
465 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
466 | param[0] = 80; | |
467 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
468 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); | |
469 | ||
470 | if (param[0] != 3) | |
471 | return -1; | |
472 | ||
473 | if (set_properties) { | |
b7802c5c DT |
474 | __set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
475 | __set_bit(REL_WHEEL, psmouse->dev->relbit); | |
1da177e4 | 476 | |
315eb996 DT |
477 | if (!psmouse->vendor) |
478 | psmouse->vendor = "Generic"; | |
479 | if (!psmouse->name) | |
480 | psmouse->name = "Wheel Mouse"; | |
1da177e4 LT |
481 | psmouse->pktsize = 4; |
482 | } | |
483 | ||
484 | return 0; | |
485 | } | |
486 | ||
487 | /* | |
488 | * Try IntelliMouse/Explorer magic init. | |
489 | */ | |
b7802c5c | 490 | static int im_explorer_detect(struct psmouse *psmouse, bool set_properties) |
1da177e4 LT |
491 | { |
492 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
493 | unsigned char param[2]; | |
494 | ||
495 | intellimouse_detect(psmouse, 0); | |
496 | ||
497 | param[0] = 200; | |
498 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
499 | param[0] = 200; | |
500 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
501 | param[0] = 80; | |
502 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
503 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); | |
504 | ||
505 | if (param[0] != 4) | |
506 | return -1; | |
507 | ||
b0c9ad8e PB |
508 | /* Magic to enable horizontal scrolling on IntelliMouse 4.0 */ |
509 | param[0] = 200; | |
510 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
511 | param[0] = 80; | |
512 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
513 | param[0] = 40; | |
514 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
515 | ||
1da177e4 | 516 | if (set_properties) { |
b7802c5c DT |
517 | __set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
518 | __set_bit(REL_WHEEL, psmouse->dev->relbit); | |
519 | __set_bit(REL_HWHEEL, psmouse->dev->relbit); | |
520 | __set_bit(BTN_SIDE, psmouse->dev->keybit); | |
521 | __set_bit(BTN_EXTRA, psmouse->dev->keybit); | |
1da177e4 | 522 | |
315eb996 DT |
523 | if (!psmouse->vendor) |
524 | psmouse->vendor = "Generic"; | |
525 | if (!psmouse->name) | |
526 | psmouse->name = "Explorer Mouse"; | |
1da177e4 LT |
527 | psmouse->pktsize = 4; |
528 | } | |
529 | ||
530 | return 0; | |
531 | } | |
532 | ||
533 | /* | |
534 | * Kensington ThinkingMouse / ExpertMouse magic init. | |
535 | */ | |
b7802c5c | 536 | static int thinking_detect(struct psmouse *psmouse, bool set_properties) |
1da177e4 LT |
537 | { |
538 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
539 | unsigned char param[2]; | |
e38de678 | 540 | static const unsigned char seq[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20 }; |
1da177e4 LT |
541 | int i; |
542 | ||
543 | param[0] = 10; | |
544 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
545 | param[0] = 0; | |
546 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); | |
e38de678 HD |
547 | for (i = 0; i < ARRAY_SIZE(seq); i++) { |
548 | param[0] = seq[i]; | |
549 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
550 | } | |
1da177e4 LT |
551 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); |
552 | ||
553 | if (param[0] != 2) | |
554 | return -1; | |
555 | ||
556 | if (set_properties) { | |
315eb996 | 557 | __set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
b7802c5c | 558 | __set_bit(BTN_EXTRA, psmouse->dev->keybit); |
1da177e4 LT |
559 | |
560 | psmouse->vendor = "Kensington"; | |
561 | psmouse->name = "ThinkingMouse"; | |
562 | } | |
563 | ||
564 | return 0; | |
565 | } | |
566 | ||
567 | /* | |
568 | * Bare PS/2 protocol "detection". Always succeeds. | |
569 | */ | |
b7802c5c | 570 | static int ps2bare_detect(struct psmouse *psmouse, bool set_properties) |
1da177e4 | 571 | { |
dbf4ccd6 | 572 | if (set_properties) { |
315eb996 DT |
573 | if (!psmouse->vendor) |
574 | psmouse->vendor = "Generic"; | |
575 | if (!psmouse->name) | |
576 | psmouse->name = "Mouse"; | |
577 | ||
578 | /* | |
579 | * We have no way of figuring true number of buttons so let's | |
580 | * assume that the device has 3. | |
581 | */ | |
582 | __set_bit(BTN_MIDDLE, psmouse->dev->keybit); | |
dbf4ccd6 | 583 | } |
1da177e4 LT |
584 | |
585 | return 0; | |
586 | } | |
587 | ||
aea6a461 AR |
588 | /* |
589 | * Cortron PS/2 protocol detection. There's no special way to detect it, so it | |
590 | * must be forced by sysfs protocol writing. | |
591 | */ | |
b7802c5c | 592 | static int cortron_detect(struct psmouse *psmouse, bool set_properties) |
aea6a461 AR |
593 | { |
594 | if (set_properties) { | |
595 | psmouse->vendor = "Cortron"; | |
596 | psmouse->name = "PS/2 Trackball"; | |
315eb996 DT |
597 | |
598 | __set_bit(BTN_MIDDLE, psmouse->dev->keybit); | |
b7802c5c | 599 | __set_bit(BTN_SIDE, psmouse->dev->keybit); |
aea6a461 AR |
600 | } |
601 | ||
602 | return 0; | |
603 | } | |
dbf4ccd6 | 604 | |
1da177e4 LT |
605 | /* |
606 | * psmouse_extensions() probes for any extensions to the basic PS/2 protocol | |
607 | * the mouse may have. | |
608 | */ | |
609 | ||
610 | static int psmouse_extensions(struct psmouse *psmouse, | |
b7802c5c | 611 | unsigned int max_proto, bool set_properties) |
1da177e4 | 612 | { |
0698989d | 613 | bool synaptics_hardware = false; |
1da177e4 | 614 | |
a15d60f8 DT |
615 | /* |
616 | * We always check for lifebook because it does not disturb mouse | |
617 | * (it only checks DMI information). | |
618 | */ | |
dbf4ccd6 | 619 | if (lifebook_detect(psmouse, set_properties) == 0) { |
a15d60f8 DT |
620 | if (max_proto > PSMOUSE_IMEX) { |
621 | if (!set_properties || lifebook_init(psmouse) == 0) | |
622 | return PSMOUSE_LIFEBOOK; | |
623 | } | |
624 | } | |
02d7f589 | 625 | |
1da177e4 LT |
626 | /* |
627 | * Try Kensington ThinkingMouse (we try first, because synaptics probe | |
628 | * upsets the thinkingmouse). | |
629 | */ | |
630 | ||
631 | if (max_proto > PSMOUSE_IMEX && thinking_detect(psmouse, set_properties) == 0) | |
632 | return PSMOUSE_THINKPS; | |
633 | ||
634 | /* | |
55e3d922 AS |
635 | * Try Synaptics TouchPad. Note that probing is done even if Synaptics protocol |
636 | * support is disabled in config - we need to know if it is synaptics so we | |
637 | * can reset it properly after probing for intellimouse. | |
1da177e4 LT |
638 | */ |
639 | if (max_proto > PSMOUSE_PS2 && synaptics_detect(psmouse, set_properties) == 0) { | |
b7802c5c | 640 | synaptics_hardware = true; |
1da177e4 LT |
641 | |
642 | if (max_proto > PSMOUSE_IMEX) { | |
e4e6efd2 DD |
643 | /* |
644 | * Try activating protocol, but check if support is enabled first, since | |
645 | * we try detecting Synaptics even when protocol is disabled. | |
646 | */ | |
647 | if (synaptics_supported() && | |
648 | (!set_properties || synaptics_init(psmouse) == 0)) { | |
1da177e4 | 649 | return PSMOUSE_SYNAPTICS; |
e4e6efd2 DD |
650 | } |
651 | ||
1da177e4 LT |
652 | /* |
653 | * Some Synaptics touchpads can emulate extended protocols (like IMPS/2). | |
654 | * Unfortunately Logitech/Genius probes confuse some firmware versions so | |
655 | * we'll have to skip them. | |
656 | */ | |
657 | max_proto = PSMOUSE_IMEX; | |
658 | } | |
659 | /* | |
660 | * Make sure that touchpad is in relative mode, gestures (taps) are enabled | |
661 | */ | |
662 | synaptics_reset(psmouse); | |
663 | } | |
664 | ||
665 | /* | |
666 | * Try ALPS TouchPad | |
667 | */ | |
668 | if (max_proto > PSMOUSE_IMEX) { | |
669 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); | |
670 | if (alps_detect(psmouse, set_properties) == 0) { | |
671 | if (!set_properties || alps_init(psmouse) == 0) | |
672 | return PSMOUSE_ALPS; | |
673 | /* | |
674 | * Init failed, try basic relative protocols | |
675 | */ | |
676 | max_proto = PSMOUSE_IMEX; | |
677 | } | |
678 | } | |
679 | ||
df08ef27 AS |
680 | /* |
681 | * Try OLPC HGPK touchpad. | |
682 | */ | |
683 | if (max_proto > PSMOUSE_IMEX && | |
684 | hgpk_detect(psmouse, set_properties) == 0) { | |
685 | if (!set_properties || hgpk_init(psmouse) == 0) | |
686 | return PSMOUSE_HGPK; | |
687 | /* | |
688 | * Init failed, try basic relative protocols | |
689 | */ | |
690 | max_proto = PSMOUSE_IMEX; | |
691 | } | |
24bf10ab | 692 | |
2a0bd75e AO |
693 | /* |
694 | * Try Elantech touchpad. | |
695 | */ | |
696 | if (max_proto > PSMOUSE_IMEX && | |
697 | elantech_detect(psmouse, set_properties) == 0) { | |
698 | if (!set_properties || elantech_init(psmouse) == 0) | |
699 | return PSMOUSE_ELANTECH; | |
700 | /* | |
701 | * Init failed, try basic relative protocols | |
702 | */ | |
703 | max_proto = PSMOUSE_IMEX; | |
704 | } | |
705 | ||
fc69f4a6 | 706 | |
df08ef27 | 707 | if (max_proto > PSMOUSE_IMEX) { |
24bf10ab SL |
708 | if (genius_detect(psmouse, set_properties) == 0) |
709 | return PSMOUSE_GENPS; | |
710 | ||
711 | if (ps2pp_init(psmouse, set_properties) == 0) | |
712 | return PSMOUSE_PS2PP; | |
1da177e4 | 713 | |
24bf10ab SL |
714 | if (trackpoint_detect(psmouse, set_properties) == 0) |
715 | return PSMOUSE_TRACKPOINT; | |
1da177e4 | 716 | |
24bf10ab SL |
717 | if (touchkit_ps2_detect(psmouse, set_properties) == 0) |
718 | return PSMOUSE_TOUCHKIT_PS2; | |
719 | } | |
ba44995a | 720 | |
4a18b3ab TL |
721 | /* |
722 | * Try Finger Sensing Pad. We do it here because its probe upsets | |
723 | * Trackpoint devices (causing TP_READ_ID command to time out). | |
724 | */ | |
725 | if (max_proto > PSMOUSE_IMEX) { | |
726 | if (fsp_detect(psmouse, set_properties) == 0) { | |
727 | if (!set_properties || fsp_init(psmouse) == 0) | |
728 | return PSMOUSE_FSP; | |
729 | /* | |
730 | * Init failed, try basic relative protocols | |
731 | */ | |
732 | max_proto = PSMOUSE_IMEX; | |
733 | } | |
734 | } | |
735 | ||
1da177e4 LT |
736 | /* |
737 | * Reset to defaults in case the device got confused by extended | |
554fc193 AZ |
738 | * protocol probes. Note that we follow up with full reset because |
739 | * some mice put themselves to sleep when they see PSMOUSE_RESET_DIS. | |
1da177e4 | 740 | */ |
554fc193 | 741 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); |
ba44995a | 742 | psmouse_reset(psmouse); |
1da177e4 LT |
743 | |
744 | if (max_proto >= PSMOUSE_IMEX && im_explorer_detect(psmouse, set_properties) == 0) | |
745 | return PSMOUSE_IMEX; | |
746 | ||
747 | if (max_proto >= PSMOUSE_IMPS && intellimouse_detect(psmouse, set_properties) == 0) | |
748 | return PSMOUSE_IMPS; | |
749 | ||
750 | /* | |
751 | * Okay, all failed, we have a standard mouse here. The number of the buttons | |
752 | * is still a question, though. We assume 3. | |
753 | */ | |
754 | ps2bare_detect(psmouse, set_properties); | |
755 | ||
756 | if (synaptics_hardware) { | |
757 | /* | |
758 | * We detected Synaptics hardware but it did not respond to IMPS/2 probes. | |
759 | * We need to reset the touchpad because if there is a track point on the | |
760 | * pass through port it could get disabled while probing for protocol | |
761 | * extensions. | |
762 | */ | |
763 | psmouse_reset(psmouse); | |
1da177e4 LT |
764 | } |
765 | ||
766 | return PSMOUSE_PS2; | |
767 | } | |
768 | ||
e38de678 | 769 | static const struct psmouse_protocol psmouse_protocols[] = { |
dbf4ccd6 DT |
770 | { |
771 | .type = PSMOUSE_PS2, | |
772 | .name = "PS/2", | |
773 | .alias = "bare", | |
b7802c5c | 774 | .maxproto = true, |
6b9d363c | 775 | .ignore_parity = true, |
dbf4ccd6 DT |
776 | .detect = ps2bare_detect, |
777 | }, | |
55e3d922 | 778 | #ifdef CONFIG_MOUSE_PS2_LOGIPS2PP |
dbf4ccd6 DT |
779 | { |
780 | .type = PSMOUSE_PS2PP, | |
781 | .name = "PS2++", | |
782 | .alias = "logitech", | |
783 | .detect = ps2pp_init, | |
784 | }, | |
55e3d922 | 785 | #endif |
dbf4ccd6 DT |
786 | { |
787 | .type = PSMOUSE_THINKPS, | |
788 | .name = "ThinkPS/2", | |
789 | .alias = "thinkps", | |
790 | .detect = thinking_detect, | |
791 | }, | |
792 | { | |
793 | .type = PSMOUSE_GENPS, | |
794 | .name = "GenPS/2", | |
795 | .alias = "genius", | |
796 | .detect = genius_detect, | |
797 | }, | |
798 | { | |
799 | .type = PSMOUSE_IMPS, | |
800 | .name = "ImPS/2", | |
801 | .alias = "imps", | |
b7802c5c | 802 | .maxproto = true, |
6b9d363c | 803 | .ignore_parity = true, |
dbf4ccd6 DT |
804 | .detect = intellimouse_detect, |
805 | }, | |
806 | { | |
807 | .type = PSMOUSE_IMEX, | |
808 | .name = "ImExPS/2", | |
809 | .alias = "exps", | |
b7802c5c | 810 | .maxproto = true, |
6b9d363c | 811 | .ignore_parity = true, |
dbf4ccd6 DT |
812 | .detect = im_explorer_detect, |
813 | }, | |
55e3d922 | 814 | #ifdef CONFIG_MOUSE_PS2_SYNAPTICS |
dbf4ccd6 DT |
815 | { |
816 | .type = PSMOUSE_SYNAPTICS, | |
817 | .name = "SynPS/2", | |
818 | .alias = "synaptics", | |
819 | .detect = synaptics_detect, | |
820 | .init = synaptics_init, | |
821 | }, | |
7968a5dd DD |
822 | { |
823 | .type = PSMOUSE_SYNAPTICS_RELATIVE, | |
824 | .name = "SynRelPS/2", | |
825 | .alias = "synaptics-relative", | |
826 | .detect = synaptics_detect, | |
827 | .init = synaptics_init_relative, | |
828 | }, | |
55e3d922 AS |
829 | #endif |
830 | #ifdef CONFIG_MOUSE_PS2_ALPS | |
dbf4ccd6 DT |
831 | { |
832 | .type = PSMOUSE_ALPS, | |
833 | .name = "AlpsPS/2", | |
834 | .alias = "alps", | |
835 | .detect = alps_detect, | |
836 | .init = alps_init, | |
837 | }, | |
55e3d922 AS |
838 | #endif |
839 | #ifdef CONFIG_MOUSE_PS2_LIFEBOOK | |
dbf4ccd6 DT |
840 | { |
841 | .type = PSMOUSE_LIFEBOOK, | |
842 | .name = "LBPS/2", | |
843 | .alias = "lifebook", | |
844 | .init = lifebook_init, | |
845 | }, | |
55e3d922 AS |
846 | #endif |
847 | #ifdef CONFIG_MOUSE_PS2_TRACKPOINT | |
541e316a SE |
848 | { |
849 | .type = PSMOUSE_TRACKPOINT, | |
850 | .name = "TPPS/2", | |
851 | .alias = "trackpoint", | |
852 | .detect = trackpoint_detect, | |
853 | }, | |
55e3d922 AS |
854 | #endif |
855 | #ifdef CONFIG_MOUSE_PS2_TOUCHKIT | |
24bf10ab SL |
856 | { |
857 | .type = PSMOUSE_TOUCHKIT_PS2, | |
858 | .name = "touchkitPS/2", | |
859 | .alias = "touchkit", | |
860 | .detect = touchkit_ps2_detect, | |
861 | }, | |
df08ef27 AS |
862 | #endif |
863 | #ifdef CONFIG_MOUSE_PS2_OLPC | |
864 | { | |
865 | .type = PSMOUSE_HGPK, | |
866 | .name = "OLPC HGPK", | |
867 | .alias = "hgpk", | |
868 | .detect = hgpk_detect, | |
869 | }, | |
55e3d922 | 870 | #endif |
2a0bd75e AO |
871 | #ifdef CONFIG_MOUSE_PS2_ELANTECH |
872 | { | |
873 | .type = PSMOUSE_ELANTECH, | |
874 | .name = "ETPS/2", | |
875 | .alias = "elantech", | |
876 | .detect = elantech_detect, | |
877 | .init = elantech_init, | |
878 | }, | |
fc69f4a6 TL |
879 | #endif |
880 | #ifdef CONFIG_MOUSE_PS2_SENTELIC | |
881 | { | |
882 | .type = PSMOUSE_FSP, | |
883 | .name = "FSPPS/2", | |
884 | .alias = "fsp", | |
885 | .detect = fsp_detect, | |
886 | .init = fsp_init, | |
887 | }, | |
888 | #endif | |
aea6a461 AR |
889 | { |
890 | .type = PSMOUSE_CORTRON, | |
891 | .name = "CortronPS/2", | |
892 | .alias = "cortps", | |
893 | .detect = cortron_detect, | |
894 | }, | |
dbf4ccd6 DT |
895 | { |
896 | .type = PSMOUSE_AUTO, | |
897 | .name = "auto", | |
898 | .alias = "any", | |
b7802c5c | 899 | .maxproto = true, |
dbf4ccd6 DT |
900 | }, |
901 | }; | |
902 | ||
e38de678 | 903 | static const struct psmouse_protocol *psmouse_protocol_by_type(enum psmouse_type type) |
dbf4ccd6 DT |
904 | { |
905 | int i; | |
906 | ||
907 | for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++) | |
908 | if (psmouse_protocols[i].type == type) | |
909 | return &psmouse_protocols[i]; | |
910 | ||
911 | WARN_ON(1); | |
912 | return &psmouse_protocols[0]; | |
913 | } | |
914 | ||
e38de678 | 915 | static const struct psmouse_protocol *psmouse_protocol_by_name(const char *name, size_t len) |
dbf4ccd6 | 916 | { |
e38de678 | 917 | const struct psmouse_protocol *p; |
dbf4ccd6 DT |
918 | int i; |
919 | ||
920 | for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++) { | |
921 | p = &psmouse_protocols[i]; | |
922 | ||
923 | if ((strlen(p->name) == len && !strncmp(p->name, name, len)) || | |
924 | (strlen(p->alias) == len && !strncmp(p->alias, name, len))) | |
925 | return &psmouse_protocols[i]; | |
926 | } | |
927 | ||
928 | return NULL; | |
929 | } | |
930 | ||
931 | ||
1da177e4 LT |
932 | /* |
933 | * psmouse_probe() probes for a PS/2 mouse. | |
934 | */ | |
935 | ||
936 | static int psmouse_probe(struct psmouse *psmouse) | |
937 | { | |
938 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
939 | unsigned char param[2]; | |
940 | ||
941 | /* | |
942 | * First, we check if it's a mouse. It should send 0x00 or 0x03 | |
943 | * in case of an IntelliMouse in 4-byte mode or 0x04 for IM Explorer. | |
7741e931 VP |
944 | * Sunrex K8561 IR Keyboard/Mouse reports 0xff on second and subsequent |
945 | * ID queries, probably due to a firmware bug. | |
1da177e4 LT |
946 | */ |
947 | ||
948 | param[0] = 0xa5; | |
949 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) | |
950 | return -1; | |
951 | ||
7741e931 VP |
952 | if (param[0] != 0x00 && param[0] != 0x03 && |
953 | param[0] != 0x04 && param[0] != 0xff) | |
1da177e4 LT |
954 | return -1; |
955 | ||
956 | /* | |
957 | * Then we reset and disable the mouse so that it doesn't generate events. | |
958 | */ | |
959 | ||
960 | if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_DIS)) | |
b5d21704 DT |
961 | psmouse_warn(psmouse, "Failed to reset mouse on %s\n", |
962 | ps2dev->serio->phys); | |
1da177e4 LT |
963 | |
964 | return 0; | |
965 | } | |
966 | ||
967 | /* | |
968 | * Here we set the mouse resolution. | |
969 | */ | |
970 | ||
971 | void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution) | |
972 | { | |
e38de678 HD |
973 | static const unsigned char params[] = { 0, 1, 2, 2, 3 }; |
974 | unsigned char p; | |
1da177e4 LT |
975 | |
976 | if (resolution == 0 || resolution > 200) | |
977 | resolution = 200; | |
978 | ||
e38de678 HD |
979 | p = params[resolution / 50]; |
980 | ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES); | |
981 | psmouse->resolution = 25 << p; | |
1da177e4 LT |
982 | } |
983 | ||
984 | /* | |
985 | * Here we set the mouse report rate. | |
986 | */ | |
987 | ||
988 | static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate) | |
989 | { | |
e38de678 HD |
990 | static const unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 }; |
991 | unsigned char r; | |
1da177e4 LT |
992 | int i = 0; |
993 | ||
994 | while (rates[i] > rate) i++; | |
e38de678 HD |
995 | r = rates[i]; |
996 | ps2_command(&psmouse->ps2dev, &r, PSMOUSE_CMD_SETRATE); | |
997 | psmouse->rate = r; | |
1da177e4 LT |
998 | } |
999 | ||
1000 | /* | |
1001 | * psmouse_initialize() initializes the mouse to a sane state. | |
1002 | */ | |
1003 | ||
1004 | static void psmouse_initialize(struct psmouse *psmouse) | |
1005 | { | |
1da177e4 LT |
1006 | /* |
1007 | * We set the mouse report rate, resolution and scaling. | |
1008 | */ | |
1009 | ||
1010 | if (psmouse_max_proto != PSMOUSE_PS2) { | |
1011 | psmouse->set_rate(psmouse, psmouse->rate); | |
1012 | psmouse->set_resolution(psmouse, psmouse->resolution); | |
1013 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
1014 | } | |
1015 | } | |
1016 | ||
1da177e4 LT |
1017 | /* |
1018 | * psmouse_activate() enables the mouse so that we get motion reports from it. | |
1019 | */ | |
1020 | ||
1021 | static void psmouse_activate(struct psmouse *psmouse) | |
1022 | { | |
1023 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE)) | |
b5d21704 DT |
1024 | psmouse_warn(psmouse, "Failed to enable mouse on %s\n", |
1025 | psmouse->ps2dev.serio->phys); | |
1da177e4 LT |
1026 | |
1027 | psmouse_set_state(psmouse, PSMOUSE_ACTIVATED); | |
1028 | } | |
1029 | ||
1030 | ||
1031 | /* | |
1032 | * psmouse_deactivate() puts the mouse into poll mode so that we don't get motion | |
c03983ac | 1033 | * reports from it unless we explicitly request it. |
1da177e4 LT |
1034 | */ |
1035 | ||
1036 | static void psmouse_deactivate(struct psmouse *psmouse) | |
1037 | { | |
1038 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE)) | |
b5d21704 DT |
1039 | psmouse_warn(psmouse, "Failed to deactivate mouse on %s\n", |
1040 | psmouse->ps2dev.serio->phys); | |
1da177e4 LT |
1041 | |
1042 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
1043 | } | |
1044 | ||
f0d5c6f4 | 1045 | /* |
b5d21704 | 1046 | * psmouse_poll() - default poll handler. Everyone except for ALPS uses it. |
f0d5c6f4 DT |
1047 | */ |
1048 | ||
1049 | static int psmouse_poll(struct psmouse *psmouse) | |
1050 | { | |
1051 | return ps2_command(&psmouse->ps2dev, psmouse->packet, | |
1052 | PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)); | |
1053 | } | |
1054 | ||
1055 | ||
1056 | /* | |
1057 | * psmouse_resync() attempts to re-validate current protocol. | |
1058 | */ | |
1059 | ||
c4028958 | 1060 | static void psmouse_resync(struct work_struct *work) |
f0d5c6f4 | 1061 | { |
c4028958 | 1062 | struct psmouse *parent = NULL, *psmouse = |
8bf020ee | 1063 | container_of(work, struct psmouse, resync_work.work); |
f0d5c6f4 DT |
1064 | struct serio *serio = psmouse->ps2dev.serio; |
1065 | psmouse_ret_t rc = PSMOUSE_GOOD_DATA; | |
b7802c5c | 1066 | bool failed = false, enabled = false; |
f0d5c6f4 DT |
1067 | int i; |
1068 | ||
c14471dc | 1069 | mutex_lock(&psmouse_mutex); |
f0d5c6f4 DT |
1070 | |
1071 | if (psmouse->state != PSMOUSE_RESYNCING) | |
1072 | goto out; | |
1073 | ||
1074 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1075 | parent = serio_get_drvdata(serio->parent); | |
1076 | psmouse_deactivate(parent); | |
1077 | } | |
1078 | ||
1079 | /* | |
1080 | * Some mice don't ACK commands sent while they are in the middle of | |
1081 | * transmitting motion packet. To avoid delay we use ps2_sendbyte() | |
1082 | * instead of ps2_command() which would wait for 200ms for an ACK | |
1083 | * that may never come. | |
1084 | * As an additional quirk ALPS touchpads may not only forget to ACK | |
1085 | * disable command but will stop reporting taps, so if we see that | |
1086 | * mouse at least once ACKs disable we will do full reconnect if ACK | |
1087 | * is missing. | |
1088 | */ | |
1089 | psmouse->num_resyncs++; | |
1090 | ||
1091 | if (ps2_sendbyte(&psmouse->ps2dev, PSMOUSE_CMD_DISABLE, 20)) { | |
1092 | if (psmouse->num_resyncs < 3 || psmouse->acks_disable_command) | |
b7802c5c | 1093 | failed = true; |
f0d5c6f4 | 1094 | } else |
b7802c5c | 1095 | psmouse->acks_disable_command = true; |
f0d5c6f4 DT |
1096 | |
1097 | /* | |
1098 | * Poll the mouse. If it was reset the packet will be shorter than | |
1099 | * psmouse->pktsize and ps2_command will fail. We do not expect and | |
1100 | * do not handle scenario when mouse "upgrades" its protocol while | |
1101 | * disconnected since it would require additional delay. If we ever | |
1102 | * see a mouse that does it we'll adjust the code. | |
1103 | */ | |
1104 | if (!failed) { | |
1105 | if (psmouse->poll(psmouse)) | |
b7802c5c | 1106 | failed = true; |
f0d5c6f4 DT |
1107 | else { |
1108 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
1109 | for (i = 0; i < psmouse->pktsize; i++) { | |
1110 | psmouse->pktcnt++; | |
7d12e780 | 1111 | rc = psmouse->protocol_handler(psmouse); |
f0d5c6f4 DT |
1112 | if (rc != PSMOUSE_GOOD_DATA) |
1113 | break; | |
1114 | } | |
1115 | if (rc != PSMOUSE_FULL_PACKET) | |
b7802c5c | 1116 | failed = true; |
f0d5c6f4 DT |
1117 | psmouse_set_state(psmouse, PSMOUSE_RESYNCING); |
1118 | } | |
1119 | } | |
1120 | /* | |
1121 | * Now try to enable mouse. We try to do that even if poll failed and also | |
1122 | * repeat our attempts 5 times, otherwise we may be left out with disabled | |
1123 | * mouse. | |
1124 | */ | |
1125 | for (i = 0; i < 5; i++) { | |
1126 | if (!ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { | |
b7802c5c | 1127 | enabled = true; |
f0d5c6f4 DT |
1128 | break; |
1129 | } | |
1130 | msleep(200); | |
1131 | } | |
1132 | ||
1133 | if (!enabled) { | |
b5d21704 DT |
1134 | psmouse_warn(psmouse, "failed to re-enable mouse on %s\n", |
1135 | psmouse->ps2dev.serio->phys); | |
b7802c5c | 1136 | failed = true; |
f0d5c6f4 DT |
1137 | } |
1138 | ||
1139 | if (failed) { | |
1140 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
b5d21704 DT |
1141 | psmouse_info(psmouse, |
1142 | "resync failed, issuing reconnect request\n"); | |
f0d5c6f4 DT |
1143 | serio_reconnect(serio); |
1144 | } else | |
1145 | psmouse_set_state(psmouse, PSMOUSE_ACTIVATED); | |
1146 | ||
1147 | if (parent) | |
1148 | psmouse_activate(parent); | |
1149 | out: | |
c14471dc | 1150 | mutex_unlock(&psmouse_mutex); |
f0d5c6f4 | 1151 | } |
1da177e4 LT |
1152 | |
1153 | /* | |
1154 | * psmouse_cleanup() resets the mouse into power-on state. | |
1155 | */ | |
1156 | ||
1157 | static void psmouse_cleanup(struct serio *serio) | |
1158 | { | |
1159 | struct psmouse *psmouse = serio_get_drvdata(serio); | |
a1cec061 DT |
1160 | struct psmouse *parent = NULL; |
1161 | ||
1162 | mutex_lock(&psmouse_mutex); | |
1163 | ||
1164 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1165 | parent = serio_get_drvdata(serio->parent); | |
1166 | psmouse_deactivate(parent); | |
1167 | } | |
1168 | ||
a9f0c381 DT |
1169 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); |
1170 | ||
1171 | /* | |
1172 | * Disable stream mode so cleanup routine can proceed undisturbed. | |
1173 | */ | |
1174 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE)) | |
b5d21704 DT |
1175 | psmouse_warn(psmouse, "Failed to disable mouse on %s\n", |
1176 | psmouse->ps2dev.serio->phys); | |
a1cec061 DT |
1177 | |
1178 | if (psmouse->cleanup) | |
1179 | psmouse->cleanup(psmouse); | |
1da177e4 | 1180 | |
4a299bf5 DT |
1181 | /* |
1182 | * Reset the mouse to defaults (bare PS/2 protocol). | |
1183 | */ | |
1184 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); | |
a1cec061 DT |
1185 | |
1186 | /* | |
1187 | * Some boxes, such as HP nx7400, get terribly confused if mouse | |
1188 | * is not fully enabled before suspending/shutting down. | |
1189 | */ | |
1190 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE); | |
1191 | ||
1192 | if (parent) { | |
1193 | if (parent->pt_deactivate) | |
1194 | parent->pt_deactivate(parent); | |
1195 | ||
1196 | psmouse_activate(parent); | |
1197 | } | |
1198 | ||
1199 | mutex_unlock(&psmouse_mutex); | |
1da177e4 LT |
1200 | } |
1201 | ||
1202 | /* | |
1203 | * psmouse_disconnect() closes and frees. | |
1204 | */ | |
1205 | ||
1206 | static void psmouse_disconnect(struct serio *serio) | |
1207 | { | |
04df1925 DT |
1208 | struct psmouse *psmouse, *parent = NULL; |
1209 | ||
1210 | psmouse = serio_get_drvdata(serio); | |
1da177e4 | 1211 | |
cfe9e888 | 1212 | sysfs_remove_group(&serio->dev.kobj, &psmouse_attribute_group); |
1da177e4 | 1213 | |
c14471dc | 1214 | mutex_lock(&psmouse_mutex); |
04df1925 | 1215 | |
1da177e4 LT |
1216 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); |
1217 | ||
f0d5c6f4 | 1218 | /* make sure we don't have a resync in progress */ |
c14471dc | 1219 | mutex_unlock(&psmouse_mutex); |
f0d5c6f4 | 1220 | flush_workqueue(kpsmoused_wq); |
c14471dc | 1221 | mutex_lock(&psmouse_mutex); |
f0d5c6f4 | 1222 | |
1da177e4 LT |
1223 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { |
1224 | parent = serio_get_drvdata(serio->parent); | |
04df1925 | 1225 | psmouse_deactivate(parent); |
1da177e4 LT |
1226 | } |
1227 | ||
1228 | if (psmouse->disconnect) | |
1229 | psmouse->disconnect(psmouse); | |
1230 | ||
04df1925 DT |
1231 | if (parent && parent->pt_deactivate) |
1232 | parent->pt_deactivate(parent); | |
1233 | ||
1da177e4 LT |
1234 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); |
1235 | ||
1da177e4 LT |
1236 | serio_close(serio); |
1237 | serio_set_drvdata(serio, NULL); | |
2e5b636b | 1238 | input_unregister_device(psmouse->dev); |
1da177e4 | 1239 | kfree(psmouse); |
04df1925 DT |
1240 | |
1241 | if (parent) | |
1242 | psmouse_activate(parent); | |
1243 | ||
c14471dc | 1244 | mutex_unlock(&psmouse_mutex); |
1da177e4 LT |
1245 | } |
1246 | ||
315eb996 DT |
1247 | static int psmouse_switch_protocol(struct psmouse *psmouse, |
1248 | const struct psmouse_protocol *proto) | |
dbf4ccd6 | 1249 | { |
6b9d363c | 1250 | const struct psmouse_protocol *selected_proto; |
2e5b636b | 1251 | struct input_dev *input_dev = psmouse->dev; |
dbf4ccd6 | 1252 | |
28aa7f1c | 1253 | input_dev->dev.parent = &psmouse->ps2dev.serio->dev; |
dbf4ccd6 | 1254 | |
7b19ada2 | 1255 | input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); |
315eb996 DT |
1256 | input_dev->keybit[BIT_WORD(BTN_MOUSE)] = |
1257 | BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); | |
7b19ada2 | 1258 | input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); |
dbf4ccd6 DT |
1259 | |
1260 | psmouse->set_rate = psmouse_set_rate; | |
1261 | psmouse->set_resolution = psmouse_set_resolution; | |
f0d5c6f4 | 1262 | psmouse->poll = psmouse_poll; |
dbf4ccd6 DT |
1263 | psmouse->protocol_handler = psmouse_process_byte; |
1264 | psmouse->pktsize = 3; | |
1265 | ||
1266 | if (proto && (proto->detect || proto->init)) { | |
a62f0d27 | 1267 | if (proto->detect && proto->detect(psmouse, true) < 0) |
dbf4ccd6 DT |
1268 | return -1; |
1269 | ||
1270 | if (proto->init && proto->init(psmouse) < 0) | |
1271 | return -1; | |
1272 | ||
1273 | psmouse->type = proto->type; | |
6b9d363c DT |
1274 | selected_proto = proto; |
1275 | } else { | |
b7802c5c DT |
1276 | psmouse->type = psmouse_extensions(psmouse, |
1277 | psmouse_max_proto, true); | |
6b9d363c DT |
1278 | selected_proto = psmouse_protocol_by_type(psmouse->type); |
1279 | } | |
1280 | ||
1281 | psmouse->ignore_parity = selected_proto->ignore_parity; | |
dbf4ccd6 | 1282 | |
f0d5c6f4 DT |
1283 | /* |
1284 | * If mouse's packet size is 3 there is no point in polling the | |
1285 | * device in hopes to detect protocol reset - we won't get less | |
1286 | * than 3 bytes response anyhow. | |
1287 | */ | |
1288 | if (psmouse->pktsize == 3) | |
1289 | psmouse->resync_time = 0; | |
1290 | ||
1291 | /* | |
1292 | * Some smart KVMs fake response to POLL command returning just | |
1293 | * 3 bytes and messing up our resync logic, so if initial poll | |
1294 | * fails we won't try polling the device anymore. Hopefully | |
1295 | * such KVM will maintain initially selected protocol. | |
1296 | */ | |
1297 | if (psmouse->resync_time && psmouse->poll(psmouse)) | |
1298 | psmouse->resync_time = 0; | |
1299 | ||
08ffce45 | 1300 | snprintf(psmouse->devname, sizeof(psmouse->devname), "%s %s %s", |
6b9d363c | 1301 | selected_proto->name, psmouse->vendor, psmouse->name); |
dbf4ccd6 | 1302 | |
2e5b636b DT |
1303 | input_dev->name = psmouse->devname; |
1304 | input_dev->phys = psmouse->phys; | |
1305 | input_dev->id.bustype = BUS_I8042; | |
1306 | input_dev->id.vendor = 0x0002; | |
1307 | input_dev->id.product = psmouse->type; | |
1308 | input_dev->id.version = psmouse->model; | |
dbf4ccd6 DT |
1309 | |
1310 | return 0; | |
1311 | } | |
1312 | ||
1da177e4 LT |
1313 | /* |
1314 | * psmouse_connect() is a callback from the serio module when | |
1315 | * an unhandled serio port is found. | |
1316 | */ | |
1317 | static int psmouse_connect(struct serio *serio, struct serio_driver *drv) | |
1318 | { | |
1319 | struct psmouse *psmouse, *parent = NULL; | |
2e5b636b | 1320 | struct input_dev *input_dev; |
72155615 | 1321 | int retval = 0, error = -ENOMEM; |
1da177e4 | 1322 | |
c14471dc | 1323 | mutex_lock(&psmouse_mutex); |
04df1925 | 1324 | |
1da177e4 LT |
1325 | /* |
1326 | * If this is a pass-through port deactivate parent so the device | |
1327 | * connected to this port can be successfully identified | |
1328 | */ | |
1329 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1330 | parent = serio_get_drvdata(serio->parent); | |
1331 | psmouse_deactivate(parent); | |
1332 | } | |
1333 | ||
2e5b636b DT |
1334 | psmouse = kzalloc(sizeof(struct psmouse), GFP_KERNEL); |
1335 | input_dev = input_allocate_device(); | |
1336 | if (!psmouse || !input_dev) | |
72155615 | 1337 | goto err_free; |
1da177e4 | 1338 | |
1da177e4 | 1339 | ps2_init(&psmouse->ps2dev, serio); |
8bf020ee | 1340 | INIT_DELAYED_WORK(&psmouse->resync_work, psmouse_resync); |
2e5b636b | 1341 | psmouse->dev = input_dev; |
08ffce45 | 1342 | snprintf(psmouse->phys, sizeof(psmouse->phys), "%s/input0", serio->phys); |
dbf4ccd6 | 1343 | |
1da177e4 LT |
1344 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); |
1345 | ||
1346 | serio_set_drvdata(serio, psmouse); | |
1347 | ||
72155615 DT |
1348 | error = serio_open(serio, drv); |
1349 | if (error) | |
1350 | goto err_clear_drvdata; | |
1da177e4 LT |
1351 | |
1352 | if (psmouse_probe(psmouse) < 0) { | |
72155615 DT |
1353 | error = -ENODEV; |
1354 | goto err_close_serio; | |
1da177e4 LT |
1355 | } |
1356 | ||
1357 | psmouse->rate = psmouse_rate; | |
1358 | psmouse->resolution = psmouse_resolution; | |
1359 | psmouse->resetafter = psmouse_resetafter; | |
f0d5c6f4 | 1360 | psmouse->resync_time = parent ? 0 : psmouse_resync_time; |
1da177e4 | 1361 | psmouse->smartscroll = psmouse_smartscroll; |
1da177e4 | 1362 | |
dbf4ccd6 | 1363 | psmouse_switch_protocol(psmouse, NULL); |
1da177e4 | 1364 | |
1da177e4 | 1365 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); |
1da177e4 LT |
1366 | psmouse_initialize(psmouse); |
1367 | ||
72155615 DT |
1368 | error = input_register_device(psmouse->dev); |
1369 | if (error) | |
1370 | goto err_protocol_disconnect; | |
2e5b636b | 1371 | |
1da177e4 LT |
1372 | if (parent && parent->pt_activate) |
1373 | parent->pt_activate(parent); | |
1374 | ||
72155615 DT |
1375 | error = sysfs_create_group(&serio->dev.kobj, &psmouse_attribute_group); |
1376 | if (error) | |
1377 | goto err_pt_deactivate; | |
1da177e4 LT |
1378 | |
1379 | psmouse_activate(psmouse); | |
1380 | ||
72155615 | 1381 | out: |
04df1925 | 1382 | /* If this is a pass-through port the parent needs to be re-activated */ |
1da177e4 LT |
1383 | if (parent) |
1384 | psmouse_activate(parent); | |
1385 | ||
c14471dc | 1386 | mutex_unlock(&psmouse_mutex); |
1da177e4 | 1387 | return retval; |
72155615 DT |
1388 | |
1389 | err_pt_deactivate: | |
1390 | if (parent && parent->pt_deactivate) | |
1391 | parent->pt_deactivate(parent); | |
746b31a9 AS |
1392 | input_unregister_device(psmouse->dev); |
1393 | input_dev = NULL; /* so we don't try to free it below */ | |
72155615 DT |
1394 | err_protocol_disconnect: |
1395 | if (psmouse->disconnect) | |
1396 | psmouse->disconnect(psmouse); | |
1397 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
1398 | err_close_serio: | |
1399 | serio_close(serio); | |
1400 | err_clear_drvdata: | |
1401 | serio_set_drvdata(serio, NULL); | |
1402 | err_free: | |
1403 | input_free_device(input_dev); | |
1404 | kfree(psmouse); | |
1405 | ||
1406 | retval = error; | |
1407 | goto out; | |
1da177e4 LT |
1408 | } |
1409 | ||
1410 | ||
1411 | static int psmouse_reconnect(struct serio *serio) | |
1412 | { | |
1413 | struct psmouse *psmouse = serio_get_drvdata(serio); | |
1414 | struct psmouse *parent = NULL; | |
1415 | struct serio_driver *drv = serio->drv; | |
ef110b24 | 1416 | unsigned char type; |
1da177e4 LT |
1417 | int rc = -1; |
1418 | ||
1419 | if (!drv || !psmouse) { | |
b5d21704 DT |
1420 | psmouse_dbg(psmouse, |
1421 | "reconnect request, but serio is disconnected, ignoring...\n"); | |
1da177e4 LT |
1422 | return -1; |
1423 | } | |
1424 | ||
c14471dc | 1425 | mutex_lock(&psmouse_mutex); |
04df1925 | 1426 | |
1da177e4 LT |
1427 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { |
1428 | parent = serio_get_drvdata(serio->parent); | |
1429 | psmouse_deactivate(parent); | |
1430 | } | |
1431 | ||
1432 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); | |
1433 | ||
1434 | if (psmouse->reconnect) { | |
1435 | if (psmouse->reconnect(psmouse)) | |
1436 | goto out; | |
ef110b24 DT |
1437 | } else { |
1438 | psmouse_reset(psmouse); | |
1439 | ||
1440 | if (psmouse_probe(psmouse) < 0) | |
1441 | goto out; | |
1442 | ||
1443 | type = psmouse_extensions(psmouse, psmouse_max_proto, false); | |
1444 | if (psmouse->type != type) | |
1445 | goto out; | |
b7802c5c | 1446 | } |
1da177e4 | 1447 | |
b5d21704 DT |
1448 | /* |
1449 | * OK, the device type (and capabilities) match the old one, | |
1450 | * we can continue using it, complete initialization | |
1da177e4 LT |
1451 | */ |
1452 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
1453 | ||
1454 | psmouse_initialize(psmouse); | |
1455 | ||
1456 | if (parent && parent->pt_activate) | |
1457 | parent->pt_activate(parent); | |
1458 | ||
1459 | psmouse_activate(psmouse); | |
1460 | rc = 0; | |
1461 | ||
1462 | out: | |
1463 | /* If this is a pass-through port the parent waits to be activated */ | |
1464 | if (parent) | |
1465 | psmouse_activate(parent); | |
1466 | ||
c14471dc | 1467 | mutex_unlock(&psmouse_mutex); |
1da177e4 LT |
1468 | return rc; |
1469 | } | |
1470 | ||
1471 | static struct serio_device_id psmouse_serio_ids[] = { | |
1472 | { | |
1473 | .type = SERIO_8042, | |
1474 | .proto = SERIO_ANY, | |
1475 | .id = SERIO_ANY, | |
1476 | .extra = SERIO_ANY, | |
1477 | }, | |
1478 | { | |
1479 | .type = SERIO_PS_PSTHRU, | |
1480 | .proto = SERIO_ANY, | |
1481 | .id = SERIO_ANY, | |
1482 | .extra = SERIO_ANY, | |
1483 | }, | |
1484 | { 0 } | |
1485 | }; | |
1486 | ||
1487 | MODULE_DEVICE_TABLE(serio, psmouse_serio_ids); | |
1488 | ||
1489 | static struct serio_driver psmouse_drv = { | |
1490 | .driver = { | |
1491 | .name = "psmouse", | |
1492 | }, | |
1493 | .description = DRIVER_DESC, | |
1494 | .id_table = psmouse_serio_ids, | |
1495 | .interrupt = psmouse_interrupt, | |
1496 | .connect = psmouse_connect, | |
1497 | .reconnect = psmouse_reconnect, | |
1498 | .disconnect = psmouse_disconnect, | |
1499 | .cleanup = psmouse_cleanup, | |
1500 | }; | |
1501 | ||
cfe9e888 DT |
1502 | ssize_t psmouse_attr_show_helper(struct device *dev, struct device_attribute *devattr, |
1503 | char *buf) | |
1da177e4 LT |
1504 | { |
1505 | struct serio *serio = to_serio_port(dev); | |
cfe9e888 DT |
1506 | struct psmouse_attribute *attr = to_psmouse_attr(devattr); |
1507 | struct psmouse *psmouse; | |
1da177e4 | 1508 | |
cfe9e888 DT |
1509 | psmouse = serio_get_drvdata(serio); |
1510 | ||
59b01513 | 1511 | return attr->show(psmouse, attr->data, buf); |
1da177e4 LT |
1512 | } |
1513 | ||
cfe9e888 DT |
1514 | ssize_t psmouse_attr_set_helper(struct device *dev, struct device_attribute *devattr, |
1515 | const char *buf, size_t count) | |
1da177e4 LT |
1516 | { |
1517 | struct serio *serio = to_serio_port(dev); | |
cfe9e888 DT |
1518 | struct psmouse_attribute *attr = to_psmouse_attr(devattr); |
1519 | struct psmouse *psmouse, *parent = NULL; | |
1da177e4 LT |
1520 | int retval; |
1521 | ||
c14471dc | 1522 | retval = mutex_lock_interruptible(&psmouse_mutex); |
04df1925 | 1523 | if (retval) |
59b01513 | 1524 | goto out; |
04df1925 | 1525 | |
cfe9e888 DT |
1526 | psmouse = serio_get_drvdata(serio); |
1527 | ||
68d48221 AS |
1528 | if (attr->protect) { |
1529 | if (psmouse->state == PSMOUSE_IGNORE) { | |
1530 | retval = -ENODEV; | |
1531 | goto out_unlock; | |
1532 | } | |
1da177e4 | 1533 | |
68d48221 AS |
1534 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { |
1535 | parent = serio_get_drvdata(serio->parent); | |
1536 | psmouse_deactivate(parent); | |
1537 | } | |
dbf4ccd6 | 1538 | |
68d48221 AS |
1539 | psmouse_deactivate(psmouse); |
1540 | } | |
1da177e4 | 1541 | |
cfe9e888 | 1542 | retval = attr->set(psmouse, attr->data, buf, count); |
1da177e4 | 1543 | |
68d48221 AS |
1544 | if (attr->protect) { |
1545 | if (retval != -ENODEV) | |
1546 | psmouse_activate(psmouse); | |
dbf4ccd6 | 1547 | |
68d48221 AS |
1548 | if (parent) |
1549 | psmouse_activate(parent); | |
1550 | } | |
1da177e4 | 1551 | |
c14471dc IM |
1552 | out_unlock: |
1553 | mutex_unlock(&psmouse_mutex); | |
59b01513 | 1554 | out: |
1da177e4 LT |
1555 | return retval; |
1556 | } | |
1557 | ||
cfe9e888 DT |
1558 | static ssize_t psmouse_show_int_attr(struct psmouse *psmouse, void *offset, char *buf) |
1559 | { | |
eb5d5829 | 1560 | unsigned int *field = (unsigned int *)((char *)psmouse + (size_t)offset); |
cfe9e888 | 1561 | |
eb5d5829 | 1562 | return sprintf(buf, "%u\n", *field); |
cfe9e888 DT |
1563 | } |
1564 | ||
1565 | static ssize_t psmouse_set_int_attr(struct psmouse *psmouse, void *offset, const char *buf, size_t count) | |
1566 | { | |
eb5d5829 | 1567 | unsigned int *field = (unsigned int *)((char *)psmouse + (size_t)offset); |
76496e7a JD |
1568 | unsigned int value; |
1569 | int err; | |
cfe9e888 | 1570 | |
76496e7a JD |
1571 | err = kstrtouint(buf, 10, &value); |
1572 | if (err) | |
1573 | return err; | |
eb5d5829 | 1574 | |
cfe9e888 DT |
1575 | *field = value; |
1576 | ||
1577 | return count; | |
1578 | } | |
1579 | ||
1580 | static ssize_t psmouse_attr_show_protocol(struct psmouse *psmouse, void *data, char *buf) | |
dbf4ccd6 DT |
1581 | { |
1582 | return sprintf(buf, "%s\n", psmouse_protocol_by_type(psmouse->type)->name); | |
1583 | } | |
1584 | ||
cfe9e888 | 1585 | static ssize_t psmouse_attr_set_protocol(struct psmouse *psmouse, void *data, const char *buf, size_t count) |
dbf4ccd6 DT |
1586 | { |
1587 | struct serio *serio = psmouse->ps2dev.serio; | |
1588 | struct psmouse *parent = NULL; | |
72155615 DT |
1589 | struct input_dev *old_dev, *new_dev; |
1590 | const struct psmouse_protocol *proto, *old_proto; | |
1591 | int error; | |
dbf4ccd6 DT |
1592 | int retry = 0; |
1593 | ||
72155615 DT |
1594 | proto = psmouse_protocol_by_name(buf, count); |
1595 | if (!proto) | |
dbf4ccd6 DT |
1596 | return -EINVAL; |
1597 | ||
1598 | if (psmouse->type == proto->type) | |
1599 | return count; | |
1600 | ||
72155615 DT |
1601 | new_dev = input_allocate_device(); |
1602 | if (!new_dev) | |
2e5b636b DT |
1603 | return -ENOMEM; |
1604 | ||
09822582 | 1605 | while (!list_empty(&serio->children)) { |
dbf4ccd6 | 1606 | if (++retry > 3) { |
b5d21704 DT |
1607 | psmouse_warn(psmouse, |
1608 | "failed to destroy children ports, protocol change aborted.\n"); | |
2e5b636b | 1609 | input_free_device(new_dev); |
dbf4ccd6 DT |
1610 | return -EIO; |
1611 | } | |
1612 | ||
c14471dc | 1613 | mutex_unlock(&psmouse_mutex); |
dbf4ccd6 | 1614 | serio_unregister_child_port(serio); |
c14471dc | 1615 | mutex_lock(&psmouse_mutex); |
dbf4ccd6 | 1616 | |
2e5b636b DT |
1617 | if (serio->drv != &psmouse_drv) { |
1618 | input_free_device(new_dev); | |
dbf4ccd6 | 1619 | return -ENODEV; |
2e5b636b | 1620 | } |
dbf4ccd6 | 1621 | |
2e5b636b DT |
1622 | if (psmouse->type == proto->type) { |
1623 | input_free_device(new_dev); | |
dbf4ccd6 | 1624 | return count; /* switched by other thread */ |
2e5b636b | 1625 | } |
dbf4ccd6 DT |
1626 | } |
1627 | ||
1628 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1629 | parent = serio_get_drvdata(serio->parent); | |
1630 | if (parent->pt_deactivate) | |
1631 | parent->pt_deactivate(parent); | |
1632 | } | |
1633 | ||
72155615 DT |
1634 | old_dev = psmouse->dev; |
1635 | old_proto = psmouse_protocol_by_type(psmouse->type); | |
1636 | ||
dbf4ccd6 DT |
1637 | if (psmouse->disconnect) |
1638 | psmouse->disconnect(psmouse); | |
1639 | ||
1640 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
dbf4ccd6 | 1641 | |
2e5b636b | 1642 | psmouse->dev = new_dev; |
dbf4ccd6 DT |
1643 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); |
1644 | ||
1645 | if (psmouse_switch_protocol(psmouse, proto) < 0) { | |
1646 | psmouse_reset(psmouse); | |
1647 | /* default to PSMOUSE_PS2 */ | |
1648 | psmouse_switch_protocol(psmouse, &psmouse_protocols[0]); | |
1649 | } | |
1650 | ||
1651 | psmouse_initialize(psmouse); | |
1652 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
1653 | ||
72155615 DT |
1654 | error = input_register_device(psmouse->dev); |
1655 | if (error) { | |
1656 | if (psmouse->disconnect) | |
1657 | psmouse->disconnect(psmouse); | |
1658 | ||
1659 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
1660 | input_free_device(new_dev); | |
1661 | psmouse->dev = old_dev; | |
1662 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); | |
1663 | psmouse_switch_protocol(psmouse, old_proto); | |
1664 | psmouse_initialize(psmouse); | |
1665 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
1666 | ||
1667 | return error; | |
1668 | } | |
1669 | ||
1670 | input_unregister_device(old_dev); | |
dbf4ccd6 DT |
1671 | |
1672 | if (parent && parent->pt_activate) | |
1673 | parent->pt_activate(parent); | |
1674 | ||
1675 | return count; | |
1676 | } | |
1677 | ||
cfe9e888 | 1678 | static ssize_t psmouse_attr_set_rate(struct psmouse *psmouse, void *data, const char *buf, size_t count) |
1da177e4 | 1679 | { |
76496e7a JD |
1680 | unsigned int value; |
1681 | int err; | |
1da177e4 | 1682 | |
76496e7a JD |
1683 | err = kstrtouint(buf, 10, &value); |
1684 | if (err) | |
1685 | return err; | |
1da177e4 LT |
1686 | |
1687 | psmouse->set_rate(psmouse, value); | |
1688 | return count; | |
1689 | } | |
1690 | ||
cfe9e888 | 1691 | static ssize_t psmouse_attr_set_resolution(struct psmouse *psmouse, void *data, const char *buf, size_t count) |
1da177e4 | 1692 | { |
76496e7a JD |
1693 | unsigned int value; |
1694 | int err; | |
1da177e4 | 1695 | |
76496e7a JD |
1696 | err = kstrtouint(buf, 10, &value); |
1697 | if (err) | |
1698 | return err; | |
1da177e4 LT |
1699 | |
1700 | psmouse->set_resolution(psmouse, value); | |
1701 | return count; | |
1702 | } | |
1703 | ||
1da177e4 | 1704 | |
9bbb9e5a | 1705 | static int psmouse_set_maxproto(const char *val, const struct kernel_param *kp) |
1da177e4 | 1706 | { |
e38de678 | 1707 | const struct psmouse_protocol *proto; |
1da177e4 LT |
1708 | |
1709 | if (!val) | |
1710 | return -EINVAL; | |
1711 | ||
dbf4ccd6 | 1712 | proto = psmouse_protocol_by_name(val, strlen(val)); |
1da177e4 | 1713 | |
dbf4ccd6 DT |
1714 | if (!proto || !proto->maxproto) |
1715 | return -EINVAL; | |
1da177e4 | 1716 | |
dbf4ccd6 | 1717 | *((unsigned int *)kp->arg) = proto->type; |
1da177e4 | 1718 | |
541e316a | 1719 | return 0; |
1da177e4 LT |
1720 | } |
1721 | ||
9bbb9e5a | 1722 | static int psmouse_get_maxproto(char *buffer, const struct kernel_param *kp) |
1da177e4 | 1723 | { |
dbf4ccd6 DT |
1724 | int type = *((unsigned int *)kp->arg); |
1725 | ||
3d4c3aa9 | 1726 | return sprintf(buffer, "%s", psmouse_protocol_by_type(type)->name); |
1da177e4 LT |
1727 | } |
1728 | ||
1729 | static int __init psmouse_init(void) | |
1730 | { | |
153a9df0 AM |
1731 | int err; |
1732 | ||
7705d548 DT |
1733 | lifebook_module_init(); |
1734 | synaptics_module_init(); | |
ca94ec43 | 1735 | hgpk_module_init(); |
7705d548 | 1736 | |
f0d5c6f4 DT |
1737 | kpsmoused_wq = create_singlethread_workqueue("kpsmoused"); |
1738 | if (!kpsmoused_wq) { | |
b5d21704 | 1739 | pr_err("failed to create kpsmoused workqueue\n"); |
f0d5c6f4 DT |
1740 | return -ENOMEM; |
1741 | } | |
1742 | ||
153a9df0 AM |
1743 | err = serio_register_driver(&psmouse_drv); |
1744 | if (err) | |
1745 | destroy_workqueue(kpsmoused_wq); | |
f0d5c6f4 | 1746 | |
153a9df0 | 1747 | return err; |
1da177e4 LT |
1748 | } |
1749 | ||
1750 | static void __exit psmouse_exit(void) | |
1751 | { | |
1752 | serio_unregister_driver(&psmouse_drv); | |
f0d5c6f4 | 1753 | destroy_workqueue(kpsmoused_wq); |
1da177e4 LT |
1754 | } |
1755 | ||
1756 | module_init(psmouse_init); | |
1757 | module_exit(psmouse_exit); |