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" |
0799a924 | 37 | #include "cypress_ps2.h" |
3ace3686 | 38 | #include "focaltech.h" |
8b8be51b | 39 | #include "vmmouse.h" |
1da177e4 LT |
40 | |
41 | #define DRIVER_DESC "PS/2 mouse driver" | |
42 | ||
43 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>"); | |
44 | MODULE_DESCRIPTION(DRIVER_DESC); | |
45 | MODULE_LICENSE("GPL"); | |
46 | ||
dbf4ccd6 | 47 | static unsigned int psmouse_max_proto = PSMOUSE_AUTO; |
9bbb9e5a RR |
48 | static int psmouse_set_maxproto(const char *val, const struct kernel_param *); |
49 | static int psmouse_get_maxproto(char *buffer, const struct kernel_param *kp); | |
9c27847d | 50 | static const struct kernel_param_ops param_ops_proto_abbrev = { |
9bbb9e5a RR |
51 | .set = psmouse_set_maxproto, |
52 | .get = psmouse_get_maxproto, | |
53 | }; | |
1da177e4 | 54 | #define param_check_proto_abbrev(name, p) __param_check(name, p, unsigned int) |
1da177e4 | 55 | module_param_named(proto, psmouse_max_proto, proto_abbrev, 0644); |
dbf4ccd6 | 56 | MODULE_PARM_DESC(proto, "Highest protocol extension to probe (bare, imps, exps, any). Useful for KVM switches."); |
1da177e4 LT |
57 | |
58 | static unsigned int psmouse_resolution = 200; | |
59 | module_param_named(resolution, psmouse_resolution, uint, 0644); | |
60 | MODULE_PARM_DESC(resolution, "Resolution, in dpi."); | |
61 | ||
62 | static unsigned int psmouse_rate = 100; | |
63 | module_param_named(rate, psmouse_rate, uint, 0644); | |
64 | MODULE_PARM_DESC(rate, "Report rate, in reports per second."); | |
65 | ||
feb9eba8 | 66 | static bool psmouse_smartscroll = true; |
1da177e4 LT |
67 | module_param_named(smartscroll, psmouse_smartscroll, bool, 0644); |
68 | MODULE_PARM_DESC(smartscroll, "Logitech Smartscroll autorepeat, 1 = enabled (default), 0 = disabled."); | |
69 | ||
f0d5c6f4 | 70 | static unsigned int psmouse_resetafter = 5; |
1da177e4 LT |
71 | module_param_named(resetafter, psmouse_resetafter, uint, 0644); |
72 | MODULE_PARM_DESC(resetafter, "Reset device after so many bad packets (0 = never)."); | |
73 | ||
8bd0ee93 | 74 | static unsigned int psmouse_resync_time; |
f0d5c6f4 DT |
75 | module_param_named(resync_time, psmouse_resync_time, uint, 0644); |
76 | MODULE_PARM_DESC(resync_time, "How long can mouse stay idle before forcing resync (in seconds, 0 = never)."); | |
77 | ||
cfe9e888 DT |
78 | PSMOUSE_DEFINE_ATTR(protocol, S_IWUSR | S_IRUGO, |
79 | NULL, | |
80 | psmouse_attr_show_protocol, psmouse_attr_set_protocol); | |
81 | PSMOUSE_DEFINE_ATTR(rate, S_IWUSR | S_IRUGO, | |
82 | (void *) offsetof(struct psmouse, rate), | |
83 | psmouse_show_int_attr, psmouse_attr_set_rate); | |
84 | PSMOUSE_DEFINE_ATTR(resolution, S_IWUSR | S_IRUGO, | |
85 | (void *) offsetof(struct psmouse, resolution), | |
86 | psmouse_show_int_attr, psmouse_attr_set_resolution); | |
87 | PSMOUSE_DEFINE_ATTR(resetafter, S_IWUSR | S_IRUGO, | |
88 | (void *) offsetof(struct psmouse, resetafter), | |
89 | psmouse_show_int_attr, psmouse_set_int_attr); | |
f0d5c6f4 DT |
90 | PSMOUSE_DEFINE_ATTR(resync_time, S_IWUSR | S_IRUGO, |
91 | (void *) offsetof(struct psmouse, resync_time), | |
92 | psmouse_show_int_attr, psmouse_set_int_attr); | |
cfe9e888 DT |
93 | |
94 | static struct attribute *psmouse_attributes[] = { | |
95 | &psmouse_attr_protocol.dattr.attr, | |
96 | &psmouse_attr_rate.dattr.attr, | |
97 | &psmouse_attr_resolution.dattr.attr, | |
98 | &psmouse_attr_resetafter.dattr.attr, | |
f0d5c6f4 | 99 | &psmouse_attr_resync_time.dattr.attr, |
cfe9e888 DT |
100 | NULL |
101 | }; | |
102 | ||
103 | static struct attribute_group psmouse_attribute_group = { | |
104 | .attrs = psmouse_attributes, | |
105 | }; | |
1da177e4 | 106 | |
04df1925 | 107 | /* |
c14471dc | 108 | * psmouse_mutex protects all operations changing state of mouse |
04df1925 DT |
109 | * (connecting, disconnecting, changing rate or resolution via |
110 | * sysfs). We could use a per-device semaphore but since there | |
111 | * rarely more than one PS/2 mouse connected and since semaphore | |
112 | * is taken in "slow" paths it is not worth it. | |
113 | */ | |
c14471dc | 114 | static DEFINE_MUTEX(psmouse_mutex); |
04df1925 | 115 | |
f0d5c6f4 DT |
116 | static struct workqueue_struct *kpsmoused_wq; |
117 | ||
dbf4ccd6 DT |
118 | struct psmouse_protocol { |
119 | enum psmouse_type type; | |
b7802c5c | 120 | bool maxproto; |
6b9d363c | 121 | bool ignore_parity; /* Protocol should ignore parity errors from KBC */ |
ec6184b1 | 122 | bool try_passthru; /* Try protocol also on passthrough ports */ |
e38de678 HD |
123 | const char *name; |
124 | const char *alias; | |
b7802c5c | 125 | int (*detect)(struct psmouse *, bool); |
dbf4ccd6 DT |
126 | int (*init)(struct psmouse *); |
127 | }; | |
1da177e4 LT |
128 | |
129 | /* | |
130 | * psmouse_process_byte() analyzes the PS/2 data stream and reports | |
131 | * relevant events to the input module once full packet has arrived. | |
132 | */ | |
7968a5dd | 133 | psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse) |
1da177e4 | 134 | { |
2e5b636b | 135 | struct input_dev *dev = psmouse->dev; |
1da177e4 LT |
136 | unsigned char *packet = psmouse->packet; |
137 | ||
138 | if (psmouse->pktcnt < psmouse->pktsize) | |
139 | return PSMOUSE_GOOD_DATA; | |
140 | ||
0a88d607 | 141 | /* Full packet accumulated, process it */ |
1da177e4 | 142 | |
0a88d607 DT |
143 | switch (psmouse->type) { |
144 | case PSMOUSE_IMPS: | |
145 | /* IntelliMouse has scroll wheel */ | |
1da177e4 | 146 | input_report_rel(dev, REL_WHEEL, -(signed char) packet[3]); |
0a88d607 | 147 | break; |
1da177e4 | 148 | |
0a88d607 DT |
149 | case PSMOUSE_IMEX: |
150 | /* Scroll wheel and buttons on IntelliMouse Explorer */ | |
b0c9ad8e | 151 | switch (packet[3] & 0xC0) { |
a62f0d27 DT |
152 | case 0x80: /* vertical scroll on IntelliMouse Explorer 4.0 */ |
153 | input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31)); | |
154 | break; | |
155 | case 0x40: /* horizontal scroll on IntelliMouse Explorer 4.0 */ | |
156 | input_report_rel(dev, REL_HWHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31)); | |
157 | break; | |
158 | case 0x00: | |
159 | case 0xC0: | |
160 | input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 8) - (int) (packet[3] & 7)); | |
161 | input_report_key(dev, BTN_SIDE, (packet[3] >> 4) & 1); | |
162 | input_report_key(dev, BTN_EXTRA, (packet[3] >> 5) & 1); | |
163 | break; | |
b0c9ad8e | 164 | } |
0a88d607 | 165 | break; |
1da177e4 | 166 | |
0a88d607 DT |
167 | case PSMOUSE_GENPS: |
168 | /* Report scroll buttons on NetMice */ | |
169 | input_report_rel(dev, REL_WHEEL, -(signed char) packet[3]); | |
1da177e4 | 170 | |
0a88d607 | 171 | /* Extra buttons on Genius NewNet 3D */ |
1da177e4 LT |
172 | input_report_key(dev, BTN_SIDE, (packet[0] >> 6) & 1); |
173 | input_report_key(dev, BTN_EXTRA, (packet[0] >> 7) & 1); | |
0a88d607 | 174 | break; |
1da177e4 | 175 | |
0a88d607 DT |
176 | case PSMOUSE_THINKPS: |
177 | /* Extra button on ThinkingMouse */ | |
1da177e4 | 178 | input_report_key(dev, BTN_EXTRA, (packet[0] >> 3) & 1); |
0a88d607 DT |
179 | |
180 | /* | |
181 | * Without this bit of weirdness moving up gives wildly | |
182 | * high Y changes. | |
183 | */ | |
1da177e4 | 184 | packet[1] |= (packet[0] & 0x40) << 1; |
0a88d607 | 185 | break; |
1da177e4 | 186 | |
0a88d607 DT |
187 | case PSMOUSE_CORTRON: |
188 | /* | |
189 | * Cortron PS2 Trackball reports SIDE button in the | |
190 | * 4th bit of the first byte. | |
191 | */ | |
aea6a461 AR |
192 | input_report_key(dev, BTN_SIDE, (packet[0] >> 3) & 1); |
193 | packet[0] |= 0x08; | |
0a88d607 | 194 | break; |
aea6a461 | 195 | |
0a88d607 DT |
196 | default: |
197 | break; | |
198 | } | |
1da177e4 | 199 | |
0a88d607 | 200 | /* Generic PS/2 Mouse */ |
1da177e4 LT |
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 | */ | |
f0d5c6f4 DT |
222 | static inline void __psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state) |
223 | { | |
224 | psmouse->state = new_state; | |
b7802c5c | 225 | psmouse->pktcnt = psmouse->out_of_sync_cnt = 0; |
f0d5c6f4 DT |
226 | psmouse->ps2dev.flags = 0; |
227 | psmouse->last = jiffies; | |
228 | } | |
229 | ||
f0d5c6f4 DT |
230 | /* |
231 | * psmouse_set_state() sets new psmouse state and resets all flags and | |
232 | * counters while holding serio lock so fighting with interrupt handler | |
233 | * is not a concern. | |
234 | */ | |
a48cf5f3 | 235 | void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state) |
f0d5c6f4 DT |
236 | { |
237 | serio_pause_rx(psmouse->ps2dev.serio); | |
238 | __psmouse_set_state(psmouse, new_state); | |
239 | serio_continue_rx(psmouse->ps2dev.serio); | |
240 | } | |
241 | ||
242 | /* | |
243 | * psmouse_handle_byte() processes one byte of the input data stream | |
244 | * by calling corresponding protocol handler. | |
245 | */ | |
7d12e780 | 246 | static int psmouse_handle_byte(struct psmouse *psmouse) |
f0d5c6f4 | 247 | { |
7d12e780 | 248 | psmouse_ret_t rc = psmouse->protocol_handler(psmouse); |
f0d5c6f4 DT |
249 | |
250 | switch (rc) { | |
a62f0d27 DT |
251 | case PSMOUSE_BAD_DATA: |
252 | if (psmouse->state == PSMOUSE_ACTIVATED) { | |
b5d21704 DT |
253 | psmouse_warn(psmouse, |
254 | "%s at %s lost sync at byte %d\n", | |
255 | psmouse->name, psmouse->phys, | |
256 | psmouse->pktcnt); | |
a62f0d27 DT |
257 | if (++psmouse->out_of_sync_cnt == psmouse->resetafter) { |
258 | __psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
b5d21704 DT |
259 | psmouse_notice(psmouse, |
260 | "issuing reconnect request\n"); | |
a62f0d27 DT |
261 | serio_reconnect(psmouse->ps2dev.serio); |
262 | return -1; | |
f0d5c6f4 | 263 | } |
a62f0d27 DT |
264 | } |
265 | psmouse->pktcnt = 0; | |
266 | break; | |
267 | ||
268 | case PSMOUSE_FULL_PACKET: | |
269 | psmouse->pktcnt = 0; | |
270 | if (psmouse->out_of_sync_cnt) { | |
271 | psmouse->out_of_sync_cnt = 0; | |
b5d21704 DT |
272 | psmouse_notice(psmouse, |
273 | "%s at %s - driver resynced.\n", | |
274 | psmouse->name, psmouse->phys); | |
a62f0d27 DT |
275 | } |
276 | break; | |
f0d5c6f4 | 277 | |
a62f0d27 DT |
278 | case PSMOUSE_GOOD_DATA: |
279 | break; | |
f0d5c6f4 DT |
280 | } |
281 | return 0; | |
282 | } | |
283 | ||
284 | /* | |
285 | * psmouse_interrupt() handles incoming characters, either passing them | |
286 | * for normal processing or gathering them as command response. | |
1da177e4 | 287 | */ |
1da177e4 | 288 | static irqreturn_t psmouse_interrupt(struct serio *serio, |
7d12e780 | 289 | unsigned char data, unsigned int flags) |
1da177e4 LT |
290 | { |
291 | struct psmouse *psmouse = serio_get_drvdata(serio); | |
1da177e4 LT |
292 | |
293 | if (psmouse->state == PSMOUSE_IGNORE) | |
294 | goto out; | |
295 | ||
6b9d363c DT |
296 | if (unlikely((flags & SERIO_TIMEOUT) || |
297 | ((flags & SERIO_PARITY) && !psmouse->ignore_parity))) { | |
298 | ||
1da177e4 | 299 | if (psmouse->state == PSMOUSE_ACTIVATED) |
b5d21704 DT |
300 | psmouse_warn(psmouse, |
301 | "bad data from KBC -%s%s\n", | |
302 | flags & SERIO_TIMEOUT ? " timeout" : "", | |
303 | flags & SERIO_PARITY ? " bad parity" : ""); | |
1da177e4 LT |
304 | ps2_cmd_aborted(&psmouse->ps2dev); |
305 | goto out; | |
306 | } | |
307 | ||
308 | if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_ACK)) | |
309 | if (ps2_handle_ack(&psmouse->ps2dev, data)) | |
310 | goto out; | |
311 | ||
312 | if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_CMD)) | |
313 | if (ps2_handle_response(&psmouse->ps2dev, data)) | |
314 | goto out; | |
315 | ||
f0d5c6f4 | 316 | if (psmouse->state <= PSMOUSE_RESYNCING) |
1da177e4 LT |
317 | goto out; |
318 | ||
319 | if (psmouse->state == PSMOUSE_ACTIVATED && | |
320 | psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) { | |
b5d21704 DT |
321 | psmouse_info(psmouse, "%s at %s lost synchronization, throwing %d bytes away.\n", |
322 | psmouse->name, psmouse->phys, psmouse->pktcnt); | |
f0d5c6f4 DT |
323 | psmouse->badbyte = psmouse->packet[0]; |
324 | __psmouse_set_state(psmouse, PSMOUSE_RESYNCING); | |
8bf020ee | 325 | psmouse_queue_work(psmouse, &psmouse->resync_work, 0); |
f0d5c6f4 | 326 | goto out; |
1da177e4 LT |
327 | } |
328 | ||
1da177e4 | 329 | psmouse->packet[psmouse->pktcnt++] = data; |
ad530771 DT |
330 | |
331 | /* Check if this is a new device announcement (0xAA 0x00) */ | |
f0d5c6f4 | 332 | if (unlikely(psmouse->packet[0] == PSMOUSE_RET_BAT && psmouse->pktcnt <= 2)) { |
89c9b480 DT |
333 | if (psmouse->pktcnt == 1) { |
334 | psmouse->last = jiffies; | |
1da177e4 | 335 | goto out; |
89c9b480 | 336 | } |
1da177e4 | 337 | |
535650fd ZH |
338 | if (psmouse->packet[1] == PSMOUSE_RET_ID || |
339 | (psmouse->type == PSMOUSE_HGPK && | |
340 | psmouse->packet[1] == PSMOUSE_RET_BAT)) { | |
f0d5c6f4 DT |
341 | __psmouse_set_state(psmouse, PSMOUSE_IGNORE); |
342 | serio_reconnect(serio); | |
343 | goto out; | |
1da177e4 | 344 | } |
ad530771 DT |
345 | |
346 | /* Not a new device, try processing first byte normally */ | |
f0d5c6f4 | 347 | psmouse->pktcnt = 1; |
7d12e780 | 348 | if (psmouse_handle_byte(psmouse)) |
f0d5c6f4 | 349 | goto out; |
1da177e4 | 350 | |
f0d5c6f4 DT |
351 | psmouse->packet[psmouse->pktcnt++] = data; |
352 | } | |
1da177e4 | 353 | |
ad530771 DT |
354 | /* |
355 | * See if we need to force resync because mouse was idle for | |
356 | * too long. | |
357 | */ | |
f0d5c6f4 DT |
358 | if (psmouse->state == PSMOUSE_ACTIVATED && |
359 | psmouse->pktcnt == 1 && psmouse->resync_time && | |
360 | time_after(jiffies, psmouse->last + psmouse->resync_time * HZ)) { | |
361 | psmouse->badbyte = psmouse->packet[0]; | |
362 | __psmouse_set_state(psmouse, PSMOUSE_RESYNCING); | |
8bf020ee | 363 | psmouse_queue_work(psmouse, &psmouse->resync_work, 0); |
f0d5c6f4 DT |
364 | goto out; |
365 | } | |
1da177e4 | 366 | |
f0d5c6f4 | 367 | psmouse->last = jiffies; |
7d12e780 | 368 | psmouse_handle_byte(psmouse); |
1da177e4 | 369 | |
f0d5c6f4 | 370 | out: |
1da177e4 LT |
371 | return IRQ_HANDLED; |
372 | } | |
373 | ||
1da177e4 LT |
374 | /* |
375 | * psmouse_sliced_command() sends an extended PS/2 command to the mouse | |
376 | * using sliced syntax, understood by advanced devices, such as Logitech | |
377 | * or Synaptics touchpads. The command is encoded as: | |
378 | * 0xE6 0xE8 rr 0xE8 ss 0xE8 tt 0xE8 uu where (rr*64)+(ss*16)+(tt*4)+uu | |
379 | * is the command. | |
380 | */ | |
381 | int psmouse_sliced_command(struct psmouse *psmouse, unsigned char command) | |
382 | { | |
383 | int i; | |
384 | ||
385 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11)) | |
386 | return -1; | |
387 | ||
388 | for (i = 6; i >= 0; i -= 2) { | |
389 | unsigned char d = (command >> i) & 3; | |
390 | if (ps2_command(&psmouse->ps2dev, &d, PSMOUSE_CMD_SETRES)) | |
391 | return -1; | |
392 | } | |
393 | ||
394 | return 0; | |
395 | } | |
396 | ||
1da177e4 LT |
397 | /* |
398 | * psmouse_reset() resets the mouse into power-on state. | |
399 | */ | |
400 | int psmouse_reset(struct psmouse *psmouse) | |
401 | { | |
402 | unsigned char param[2]; | |
403 | ||
404 | if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_RESET_BAT)) | |
405 | return -1; | |
406 | ||
407 | if (param[0] != PSMOUSE_RET_BAT && param[1] != PSMOUSE_RET_ID) | |
408 | return -1; | |
409 | ||
410 | return 0; | |
411 | } | |
412 | ||
ee9dfd7a DT |
413 | /* |
414 | * Here we set the mouse resolution. | |
415 | */ | |
ee9dfd7a DT |
416 | void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution) |
417 | { | |
418 | static const unsigned char params[] = { 0, 1, 2, 2, 3 }; | |
419 | unsigned char p; | |
420 | ||
421 | if (resolution == 0 || resolution > 200) | |
422 | resolution = 200; | |
423 | ||
424 | p = params[resolution / 50]; | |
425 | ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES); | |
426 | psmouse->resolution = 25 << p; | |
427 | } | |
428 | ||
429 | /* | |
430 | * Here we set the mouse report rate. | |
431 | */ | |
ee9dfd7a DT |
432 | static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate) |
433 | { | |
434 | static const unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 }; | |
435 | unsigned char r; | |
436 | int i = 0; | |
437 | ||
438 | while (rates[i] > rate) i++; | |
439 | r = rates[i]; | |
440 | ps2_command(&psmouse->ps2dev, &r, PSMOUSE_CMD_SETRATE); | |
441 | psmouse->rate = r; | |
442 | } | |
443 | ||
4ec212f0 MG |
444 | /* |
445 | * Here we set the mouse scaling. | |
446 | */ | |
4ec212f0 MG |
447 | static void psmouse_set_scale(struct psmouse *psmouse, enum psmouse_scale scale) |
448 | { | |
449 | ps2_command(&psmouse->ps2dev, NULL, | |
450 | scale == PSMOUSE_SCALE21 ? PSMOUSE_CMD_SETSCALE21 : | |
451 | PSMOUSE_CMD_SETSCALE11); | |
452 | } | |
453 | ||
ee9dfd7a DT |
454 | /* |
455 | * psmouse_poll() - default poll handler. Everyone except for ALPS uses it. | |
456 | */ | |
ee9dfd7a DT |
457 | static int psmouse_poll(struct psmouse *psmouse) |
458 | { | |
459 | return ps2_command(&psmouse->ps2dev, psmouse->packet, | |
460 | PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)); | |
461 | } | |
462 | ||
99e14c1e DT |
463 | static bool psmouse_check_pnp_id(const char *id, const char * const ids[]) |
464 | { | |
465 | int i; | |
466 | ||
467 | for (i = 0; ids[i]; i++) | |
468 | if (!strcasecmp(id, ids[i])) | |
469 | return true; | |
470 | ||
471 | return false; | |
472 | } | |
473 | ||
2c75ada6 HG |
474 | /* |
475 | * psmouse_matches_pnp_id - check if psmouse matches one of the passed in ids. | |
476 | */ | |
477 | bool psmouse_matches_pnp_id(struct psmouse *psmouse, const char * const ids[]) | |
478 | { | |
99e14c1e DT |
479 | struct serio *serio = psmouse->ps2dev.serio; |
480 | char *p, *fw_id_copy, *save_ptr; | |
481 | bool found = false; | |
482 | ||
483 | if (strncmp(serio->firmware_id, "PNP: ", 5)) | |
484 | return false; | |
485 | ||
486 | fw_id_copy = kstrndup(&serio->firmware_id[5], | |
487 | sizeof(serio->firmware_id) - 5, | |
488 | GFP_KERNEL); | |
489 | if (!fw_id_copy) | |
490 | return false; | |
491 | ||
492 | save_ptr = fw_id_copy; | |
493 | while ((p = strsep(&fw_id_copy, " ")) != NULL) { | |
494 | if (psmouse_check_pnp_id(p, ids)) { | |
495 | found = true; | |
496 | break; | |
497 | } | |
498 | } | |
2c75ada6 | 499 | |
99e14c1e DT |
500 | kfree(save_ptr); |
501 | return found; | |
2c75ada6 | 502 | } |
1da177e4 LT |
503 | |
504 | /* | |
505 | * Genius NetMouse magic init. | |
506 | */ | |
b7802c5c | 507 | static int genius_detect(struct psmouse *psmouse, bool set_properties) |
1da177e4 LT |
508 | { |
509 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
510 | unsigned char param[4]; | |
511 | ||
512 | param[0] = 3; | |
513 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); | |
514 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
515 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
516 | ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11); | |
517 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO); | |
518 | ||
519 | if (param[0] != 0x00 || param[1] != 0x33 || param[2] != 0x55) | |
520 | return -1; | |
521 | ||
522 | if (set_properties) { | |
315eb996 | 523 | __set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
b7802c5c DT |
524 | __set_bit(BTN_EXTRA, psmouse->dev->keybit); |
525 | __set_bit(BTN_SIDE, psmouse->dev->keybit); | |
526 | __set_bit(REL_WHEEL, psmouse->dev->relbit); | |
1da177e4 LT |
527 | |
528 | psmouse->vendor = "Genius"; | |
a3f3f317 | 529 | psmouse->name = "Mouse"; |
1da177e4 LT |
530 | psmouse->pktsize = 4; |
531 | } | |
532 | ||
533 | return 0; | |
534 | } | |
535 | ||
536 | /* | |
537 | * IntelliMouse magic init. | |
538 | */ | |
b7802c5c | 539 | static int intellimouse_detect(struct psmouse *psmouse, bool set_properties) |
1da177e4 LT |
540 | { |
541 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
542 | unsigned char param[2]; | |
543 | ||
544 | param[0] = 200; | |
545 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
546 | param[0] = 100; | |
547 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
548 | param[0] = 80; | |
549 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
550 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); | |
551 | ||
552 | if (param[0] != 3) | |
553 | return -1; | |
554 | ||
555 | if (set_properties) { | |
b7802c5c DT |
556 | __set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
557 | __set_bit(REL_WHEEL, psmouse->dev->relbit); | |
1da177e4 | 558 | |
315eb996 DT |
559 | if (!psmouse->vendor) |
560 | psmouse->vendor = "Generic"; | |
561 | if (!psmouse->name) | |
562 | psmouse->name = "Wheel Mouse"; | |
1da177e4 LT |
563 | psmouse->pktsize = 4; |
564 | } | |
565 | ||
566 | return 0; | |
567 | } | |
568 | ||
569 | /* | |
570 | * Try IntelliMouse/Explorer magic init. | |
571 | */ | |
b7802c5c | 572 | static int im_explorer_detect(struct psmouse *psmouse, bool set_properties) |
1da177e4 LT |
573 | { |
574 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
575 | unsigned char param[2]; | |
576 | ||
577 | intellimouse_detect(psmouse, 0); | |
578 | ||
579 | param[0] = 200; | |
580 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
581 | param[0] = 200; | |
582 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
583 | param[0] = 80; | |
584 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
585 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); | |
586 | ||
587 | if (param[0] != 4) | |
588 | return -1; | |
589 | ||
ad530771 | 590 | /* Magic to enable horizontal scrolling on IntelliMouse 4.0 */ |
b0c9ad8e PB |
591 | param[0] = 200; |
592 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
593 | param[0] = 80; | |
594 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
595 | param[0] = 40; | |
596 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
597 | ||
1da177e4 | 598 | if (set_properties) { |
b7802c5c DT |
599 | __set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
600 | __set_bit(REL_WHEEL, psmouse->dev->relbit); | |
601 | __set_bit(REL_HWHEEL, psmouse->dev->relbit); | |
602 | __set_bit(BTN_SIDE, psmouse->dev->keybit); | |
603 | __set_bit(BTN_EXTRA, psmouse->dev->keybit); | |
1da177e4 | 604 | |
315eb996 DT |
605 | if (!psmouse->vendor) |
606 | psmouse->vendor = "Generic"; | |
607 | if (!psmouse->name) | |
608 | psmouse->name = "Explorer Mouse"; | |
1da177e4 LT |
609 | psmouse->pktsize = 4; |
610 | } | |
611 | ||
612 | return 0; | |
613 | } | |
614 | ||
615 | /* | |
616 | * Kensington ThinkingMouse / ExpertMouse magic init. | |
617 | */ | |
b7802c5c | 618 | static int thinking_detect(struct psmouse *psmouse, bool set_properties) |
1da177e4 LT |
619 | { |
620 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
621 | unsigned char param[2]; | |
e38de678 | 622 | static const unsigned char seq[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20 }; |
1da177e4 LT |
623 | int i; |
624 | ||
625 | param[0] = 10; | |
626 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
627 | param[0] = 0; | |
628 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); | |
e38de678 HD |
629 | for (i = 0; i < ARRAY_SIZE(seq); i++) { |
630 | param[0] = seq[i]; | |
631 | ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE); | |
632 | } | |
1da177e4 LT |
633 | ps2_command(ps2dev, param, PSMOUSE_CMD_GETID); |
634 | ||
635 | if (param[0] != 2) | |
636 | return -1; | |
637 | ||
638 | if (set_properties) { | |
315eb996 | 639 | __set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
b7802c5c | 640 | __set_bit(BTN_EXTRA, psmouse->dev->keybit); |
1da177e4 LT |
641 | |
642 | psmouse->vendor = "Kensington"; | |
643 | psmouse->name = "ThinkingMouse"; | |
644 | } | |
645 | ||
646 | return 0; | |
647 | } | |
648 | ||
649 | /* | |
650 | * Bare PS/2 protocol "detection". Always succeeds. | |
651 | */ | |
b7802c5c | 652 | static int ps2bare_detect(struct psmouse *psmouse, bool set_properties) |
1da177e4 | 653 | { |
dbf4ccd6 | 654 | if (set_properties) { |
315eb996 DT |
655 | if (!psmouse->vendor) |
656 | psmouse->vendor = "Generic"; | |
657 | if (!psmouse->name) | |
658 | psmouse->name = "Mouse"; | |
659 | ||
ad530771 DT |
660 | /* |
661 | * We have no way of figuring true number of buttons so let's | |
662 | * assume that the device has 3. | |
663 | */ | |
315eb996 | 664 | __set_bit(BTN_MIDDLE, psmouse->dev->keybit); |
dbf4ccd6 | 665 | } |
1da177e4 LT |
666 | |
667 | return 0; | |
668 | } | |
669 | ||
aea6a461 AR |
670 | /* |
671 | * Cortron PS/2 protocol detection. There's no special way to detect it, so it | |
672 | * must be forced by sysfs protocol writing. | |
673 | */ | |
b7802c5c | 674 | static int cortron_detect(struct psmouse *psmouse, bool set_properties) |
aea6a461 AR |
675 | { |
676 | if (set_properties) { | |
677 | psmouse->vendor = "Cortron"; | |
678 | psmouse->name = "PS/2 Trackball"; | |
315eb996 DT |
679 | |
680 | __set_bit(BTN_MIDDLE, psmouse->dev->keybit); | |
b7802c5c | 681 | __set_bit(BTN_SIDE, psmouse->dev->keybit); |
aea6a461 AR |
682 | } |
683 | ||
684 | return 0; | |
685 | } | |
dbf4ccd6 | 686 | |
5fa75cfe DT |
687 | static const struct psmouse_protocol psmouse_protocols[] = { |
688 | { | |
689 | .type = PSMOUSE_PS2, | |
690 | .name = "PS/2", | |
691 | .alias = "bare", | |
692 | .maxproto = true, | |
693 | .ignore_parity = true, | |
694 | .detect = ps2bare_detect, | |
ec6184b1 | 695 | .try_passthru = true, |
5fa75cfe DT |
696 | }, |
697 | #ifdef CONFIG_MOUSE_PS2_LOGIPS2PP | |
698 | { | |
699 | .type = PSMOUSE_PS2PP, | |
700 | .name = "PS2++", | |
701 | .alias = "logitech", | |
190e2031 | 702 | .detect = ps2pp_detect, |
5fa75cfe DT |
703 | }, |
704 | #endif | |
705 | { | |
706 | .type = PSMOUSE_THINKPS, | |
707 | .name = "ThinkPS/2", | |
708 | .alias = "thinkps", | |
709 | .detect = thinking_detect, | |
710 | }, | |
711 | #ifdef CONFIG_MOUSE_PS2_CYPRESS | |
712 | { | |
713 | .type = PSMOUSE_CYPRESS, | |
714 | .name = "CyPS/2", | |
715 | .alias = "cypress", | |
716 | .detect = cypress_detect, | |
717 | .init = cypress_init, | |
718 | }, | |
719 | #endif | |
720 | { | |
721 | .type = PSMOUSE_GENPS, | |
722 | .name = "GenPS/2", | |
723 | .alias = "genius", | |
724 | .detect = genius_detect, | |
725 | }, | |
726 | { | |
727 | .type = PSMOUSE_IMPS, | |
728 | .name = "ImPS/2", | |
729 | .alias = "imps", | |
730 | .maxproto = true, | |
731 | .ignore_parity = true, | |
732 | .detect = intellimouse_detect, | |
ec6184b1 | 733 | .try_passthru = true, |
5fa75cfe DT |
734 | }, |
735 | { | |
736 | .type = PSMOUSE_IMEX, | |
737 | .name = "ImExPS/2", | |
738 | .alias = "exps", | |
739 | .maxproto = true, | |
740 | .ignore_parity = true, | |
741 | .detect = im_explorer_detect, | |
ec6184b1 | 742 | .try_passthru = true, |
5fa75cfe DT |
743 | }, |
744 | #ifdef CONFIG_MOUSE_PS2_SYNAPTICS | |
745 | { | |
746 | .type = PSMOUSE_SYNAPTICS, | |
747 | .name = "SynPS/2", | |
748 | .alias = "synaptics", | |
749 | .detect = synaptics_detect, | |
750 | .init = synaptics_init, | |
751 | }, | |
752 | { | |
753 | .type = PSMOUSE_SYNAPTICS_RELATIVE, | |
754 | .name = "SynRelPS/2", | |
755 | .alias = "synaptics-relative", | |
756 | .detect = synaptics_detect, | |
757 | .init = synaptics_init_relative, | |
758 | }, | |
759 | #endif | |
760 | #ifdef CONFIG_MOUSE_PS2_ALPS | |
761 | { | |
762 | .type = PSMOUSE_ALPS, | |
763 | .name = "AlpsPS/2", | |
764 | .alias = "alps", | |
765 | .detect = alps_detect, | |
766 | .init = alps_init, | |
767 | }, | |
768 | #endif | |
769 | #ifdef CONFIG_MOUSE_PS2_LIFEBOOK | |
770 | { | |
771 | .type = PSMOUSE_LIFEBOOK, | |
772 | .name = "LBPS/2", | |
773 | .alias = "lifebook", | |
c378b511 | 774 | .detect = lifebook_detect, |
5fa75cfe DT |
775 | .init = lifebook_init, |
776 | }, | |
777 | #endif | |
778 | #ifdef CONFIG_MOUSE_PS2_TRACKPOINT | |
779 | { | |
780 | .type = PSMOUSE_TRACKPOINT, | |
781 | .name = "TPPS/2", | |
782 | .alias = "trackpoint", | |
783 | .detect = trackpoint_detect, | |
ec6184b1 | 784 | .try_passthru = true, |
5fa75cfe DT |
785 | }, |
786 | #endif | |
787 | #ifdef CONFIG_MOUSE_PS2_TOUCHKIT | |
788 | { | |
789 | .type = PSMOUSE_TOUCHKIT_PS2, | |
790 | .name = "touchkitPS/2", | |
791 | .alias = "touchkit", | |
792 | .detect = touchkit_ps2_detect, | |
793 | }, | |
794 | #endif | |
795 | #ifdef CONFIG_MOUSE_PS2_OLPC | |
796 | { | |
797 | .type = PSMOUSE_HGPK, | |
798 | .name = "OLPC HGPK", | |
799 | .alias = "hgpk", | |
800 | .detect = hgpk_detect, | |
801 | }, | |
802 | #endif | |
803 | #ifdef CONFIG_MOUSE_PS2_ELANTECH | |
804 | { | |
805 | .type = PSMOUSE_ELANTECH, | |
806 | .name = "ETPS/2", | |
807 | .alias = "elantech", | |
808 | .detect = elantech_detect, | |
809 | .init = elantech_init, | |
810 | }, | |
811 | #endif | |
812 | #ifdef CONFIG_MOUSE_PS2_SENTELIC | |
813 | { | |
814 | .type = PSMOUSE_FSP, | |
815 | .name = "FSPPS/2", | |
816 | .alias = "fsp", | |
817 | .detect = fsp_detect, | |
818 | .init = fsp_init, | |
819 | }, | |
820 | #endif | |
821 | { | |
822 | .type = PSMOUSE_CORTRON, | |
823 | .name = "CortronPS/2", | |
824 | .alias = "cortps", | |
825 | .detect = cortron_detect, | |
826 | }, | |
827 | #ifdef CONFIG_MOUSE_PS2_FOCALTECH | |
828 | { | |
829 | .type = PSMOUSE_FOCALTECH, | |
830 | .name = "FocalTechPS/2", | |
831 | .alias = "focaltech", | |
832 | .detect = focaltech_detect, | |
833 | .init = focaltech_init, | |
834 | }, | |
835 | #endif | |
836 | #ifdef CONFIG_MOUSE_PS2_VMMOUSE | |
837 | { | |
838 | .type = PSMOUSE_VMMOUSE, | |
839 | .name = VMMOUSE_PSNAME, | |
840 | .alias = "vmmouse", | |
841 | .detect = vmmouse_detect, | |
842 | .init = vmmouse_init, | |
843 | }, | |
844 | #endif | |
845 | { | |
846 | .type = PSMOUSE_AUTO, | |
847 | .name = "auto", | |
848 | .alias = "any", | |
849 | .maxproto = true, | |
850 | }, | |
851 | }; | |
852 | ||
c378b511 | 853 | static const struct psmouse_protocol *__psmouse_protocol_by_type(enum psmouse_type type) |
5fa75cfe DT |
854 | { |
855 | int i; | |
856 | ||
857 | for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++) | |
858 | if (psmouse_protocols[i].type == type) | |
859 | return &psmouse_protocols[i]; | |
860 | ||
c378b511 DT |
861 | return NULL; |
862 | } | |
863 | ||
864 | static const struct psmouse_protocol *psmouse_protocol_by_type(enum psmouse_type type) | |
865 | { | |
866 | const struct psmouse_protocol *proto; | |
867 | ||
868 | proto = __psmouse_protocol_by_type(type); | |
869 | if (proto) | |
870 | return proto; | |
871 | ||
5fa75cfe DT |
872 | WARN_ON(1); |
873 | return &psmouse_protocols[0]; | |
874 | } | |
875 | ||
876 | static const struct psmouse_protocol *psmouse_protocol_by_name(const char *name, size_t len) | |
877 | { | |
878 | const struct psmouse_protocol *p; | |
879 | int i; | |
880 | ||
881 | for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++) { | |
882 | p = &psmouse_protocols[i]; | |
883 | ||
884 | if ((strlen(p->name) == len && !strncmp(p->name, name, len)) || | |
885 | (strlen(p->alias) == len && !strncmp(p->alias, name, len))) | |
886 | return &psmouse_protocols[i]; | |
887 | } | |
888 | ||
889 | return NULL; | |
890 | } | |
891 | ||
ee9dfd7a DT |
892 | /* |
893 | * Apply default settings to the psmouse structure. Most of them will | |
894 | * be overridden by individual protocol initialization routines. | |
895 | */ | |
ee9dfd7a DT |
896 | static void psmouse_apply_defaults(struct psmouse *psmouse) |
897 | { | |
898 | struct input_dev *input_dev = psmouse->dev; | |
899 | ||
900 | memset(input_dev->evbit, 0, sizeof(input_dev->evbit)); | |
901 | memset(input_dev->keybit, 0, sizeof(input_dev->keybit)); | |
902 | memset(input_dev->relbit, 0, sizeof(input_dev->relbit)); | |
903 | memset(input_dev->absbit, 0, sizeof(input_dev->absbit)); | |
904 | memset(input_dev->mscbit, 0, sizeof(input_dev->mscbit)); | |
905 | ||
906 | __set_bit(EV_KEY, input_dev->evbit); | |
907 | __set_bit(EV_REL, input_dev->evbit); | |
908 | ||
909 | __set_bit(BTN_LEFT, input_dev->keybit); | |
910 | __set_bit(BTN_RIGHT, input_dev->keybit); | |
911 | ||
912 | __set_bit(REL_X, input_dev->relbit); | |
913 | __set_bit(REL_Y, input_dev->relbit); | |
914 | ||
01d4cd5c HG |
915 | __set_bit(INPUT_PROP_POINTER, input_dev->propbit); |
916 | ||
ee9dfd7a DT |
917 | psmouse->set_rate = psmouse_set_rate; |
918 | psmouse->set_resolution = psmouse_set_resolution; | |
4ec212f0 | 919 | psmouse->set_scale = psmouse_set_scale; |
ee9dfd7a DT |
920 | psmouse->poll = psmouse_poll; |
921 | psmouse->protocol_handler = psmouse_process_byte; | |
922 | psmouse->pktsize = 3; | |
923 | psmouse->reconnect = NULL; | |
924 | psmouse->disconnect = NULL; | |
925 | psmouse->cleanup = NULL; | |
926 | psmouse->pt_activate = NULL; | |
927 | psmouse->pt_deactivate = NULL; | |
928 | } | |
929 | ||
c378b511 DT |
930 | static bool psmouse_try_protocol(struct psmouse *psmouse, |
931 | enum psmouse_type type, | |
932 | unsigned int *max_proto, | |
933 | bool set_properties, bool init_allowed) | |
ee9dfd7a | 934 | { |
c378b511 DT |
935 | const struct psmouse_protocol *proto; |
936 | ||
937 | proto = __psmouse_protocol_by_type(type); | |
938 | if (!proto) | |
939 | return false; | |
940 | ||
ec6184b1 DT |
941 | if (psmouse->ps2dev.serio->id.type == SERIO_PS_PSTHRU && |
942 | !proto->try_passthru) { | |
943 | return false; | |
944 | } | |
945 | ||
ee9dfd7a DT |
946 | if (set_properties) |
947 | psmouse_apply_defaults(psmouse); | |
948 | ||
c378b511 DT |
949 | if (proto->detect(psmouse, set_properties) != 0) |
950 | return false; | |
951 | ||
952 | if (set_properties && proto->init && init_allowed) { | |
953 | if (proto->init(psmouse) != 0) { | |
954 | /* | |
955 | * We detected device, but init failed. Adjust | |
956 | * max_proto so we only try standard protocols. | |
957 | */ | |
958 | if (*max_proto > PSMOUSE_IMEX) | |
959 | *max_proto = PSMOUSE_IMEX; | |
960 | ||
961 | return false; | |
962 | } | |
963 | } | |
964 | ||
965 | return true; | |
ee9dfd7a DT |
966 | } |
967 | ||
1da177e4 LT |
968 | /* |
969 | * psmouse_extensions() probes for any extensions to the basic PS/2 protocol | |
970 | * the mouse may have. | |
971 | */ | |
1da177e4 | 972 | static int psmouse_extensions(struct psmouse *psmouse, |
b7802c5c | 973 | unsigned int max_proto, bool set_properties) |
1da177e4 | 974 | { |
0698989d | 975 | bool synaptics_hardware = false; |
1da177e4 | 976 | |
ad530771 DT |
977 | /* |
978 | * Always check for focaltech, this is safe as it uses pnp-id | |
979 | * matching. | |
980 | */ | |
c378b511 DT |
981 | if (psmouse_try_protocol(psmouse, PSMOUSE_FOCALTECH, |
982 | &max_proto, set_properties, false)) { | |
983 | if (max_proto > PSMOUSE_IMEX && | |
984 | IS_ENABLED(CONFIG_MOUSE_PS2_FOCALTECH) && | |
985 | (!set_properties || focaltech_init(psmouse) == 0)) { | |
986 | return PSMOUSE_FOCALTECH; | |
3ace3686 | 987 | } |
2b6f39e9 DT |
988 | /* |
989 | * Restrict psmouse_max_proto so that psmouse_initialize() | |
990 | * does not try to reset rate and resolution, because even | |
991 | * that upsets the device. | |
992 | * This also causes us to basically fall through to basic | |
993 | * protocol detection, where we fully reset the mouse, | |
994 | * and set it up as bare PS/2 protocol device. | |
995 | */ | |
996 | psmouse_max_proto = max_proto = PSMOUSE_PS2; | |
3ace3686 HG |
997 | } |
998 | ||
ad530771 DT |
999 | /* |
1000 | * We always check for LifeBook because it does not disturb mouse | |
1001 | * (it only checks DMI information). | |
1002 | */ | |
c378b511 DT |
1003 | if (psmouse_try_protocol(psmouse, PSMOUSE_LIFEBOOK, &max_proto, |
1004 | set_properties, max_proto > PSMOUSE_IMEX)) | |
1005 | return PSMOUSE_LIFEBOOK; | |
02d7f589 | 1006 | |
c378b511 DT |
1007 | if (psmouse_try_protocol(psmouse, PSMOUSE_VMMOUSE, &max_proto, |
1008 | set_properties, max_proto > PSMOUSE_IMEX)) | |
1009 | return PSMOUSE_VMMOUSE; | |
8b8be51b | 1010 | |
ad530771 DT |
1011 | /* |
1012 | * Try Kensington ThinkingMouse (we try first, because Synaptics | |
1013 | * probe upsets the ThinkingMouse). | |
1014 | */ | |
ee9dfd7a | 1015 | if (max_proto > PSMOUSE_IMEX && |
c378b511 DT |
1016 | psmouse_try_protocol(psmouse, PSMOUSE_THINKPS, &max_proto, |
1017 | set_properties, true)) { | |
1da177e4 | 1018 | return PSMOUSE_THINKPS; |
ee9dfd7a | 1019 | } |
1da177e4 | 1020 | |
ad530771 DT |
1021 | /* |
1022 | * Try Synaptics TouchPad. Note that probing is done even if | |
1023 | * Synaptics protocol support is disabled in config - we need to | |
1024 | * know if it is Synaptics so we can reset it properly after | |
1025 | * probing for IntelliMouse. | |
1026 | */ | |
ee9dfd7a | 1027 | if (max_proto > PSMOUSE_PS2 && |
c378b511 DT |
1028 | psmouse_try_protocol(psmouse, PSMOUSE_SYNAPTICS, &max_proto, |
1029 | set_properties, false)) { | |
b7802c5c | 1030 | synaptics_hardware = true; |
1da177e4 LT |
1031 | |
1032 | if (max_proto > PSMOUSE_IMEX) { | |
ad530771 DT |
1033 | /* |
1034 | * Try activating protocol, but check if support is | |
1035 | * enabled first, since we try detecting Synaptics | |
1036 | * even when protocol is disabled. | |
1037 | */ | |
290b799c | 1038 | if (IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS) && |
e4e6efd2 | 1039 | (!set_properties || synaptics_init(psmouse) == 0)) { |
1da177e4 | 1040 | return PSMOUSE_SYNAPTICS; |
e4e6efd2 DD |
1041 | } |
1042 | ||
ad530771 DT |
1043 | /* |
1044 | * Some Synaptics touchpads can emulate extended | |
1045 | * protocols (like IMPS/2). Unfortunately | |
1046 | * Logitech/Genius probes confuse some firmware | |
1047 | * versions so we'll have to skip them. | |
1048 | */ | |
1da177e4 LT |
1049 | max_proto = PSMOUSE_IMEX; |
1050 | } | |
ad530771 DT |
1051 | |
1052 | /* | |
1053 | * Make sure that touchpad is in relative mode, gestures | |
1054 | * (taps) are enabled. | |
1055 | */ | |
1da177e4 LT |
1056 | synaptics_reset(psmouse); |
1057 | } | |
1058 | ||
ad530771 DT |
1059 | /* |
1060 | * Try Cypress Trackpad. We must try it before Finger Sensing Pad | |
1061 | * because Finger Sensing Pad probe upsets some modules of Cypress | |
1062 | * Trackpads. | |
1063 | */ | |
0799a924 | 1064 | if (max_proto > PSMOUSE_IMEX && |
c378b511 DT |
1065 | psmouse_try_protocol(psmouse, PSMOUSE_CYPRESS, &max_proto, |
1066 | set_properties, true)) { | |
1067 | return PSMOUSE_CYPRESS; | |
0799a924 DD |
1068 | } |
1069 | ||
ad530771 | 1070 | /* Try ALPS TouchPad */ |
1da177e4 LT |
1071 | if (max_proto > PSMOUSE_IMEX) { |
1072 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); | |
c378b511 DT |
1073 | if (psmouse_try_protocol(psmouse, PSMOUSE_ALPS, |
1074 | &max_proto, set_properties, true)) | |
1075 | return PSMOUSE_ALPS; | |
1da177e4 LT |
1076 | } |
1077 | ||
ad530771 | 1078 | /* Try OLPC HGPK touchpad */ |
df08ef27 | 1079 | if (max_proto > PSMOUSE_IMEX && |
c378b511 DT |
1080 | psmouse_try_protocol(psmouse, PSMOUSE_HGPK, &max_proto, |
1081 | set_properties, true)) { | |
1082 | return PSMOUSE_HGPK; | |
df08ef27 | 1083 | } |
24bf10ab | 1084 | |
ad530771 | 1085 | /* Try Elantech touchpad */ |
2a0bd75e | 1086 | if (max_proto > PSMOUSE_IMEX && |
c378b511 DT |
1087 | psmouse_try_protocol(psmouse, PSMOUSE_ELANTECH, |
1088 | &max_proto, set_properties, true)) { | |
1089 | return PSMOUSE_ELANTECH; | |
2a0bd75e AO |
1090 | } |
1091 | ||
df08ef27 | 1092 | if (max_proto > PSMOUSE_IMEX) { |
c378b511 DT |
1093 | if (psmouse_try_protocol(psmouse, PSMOUSE_GENPS, |
1094 | &max_proto, set_properties, true)) | |
24bf10ab SL |
1095 | return PSMOUSE_GENPS; |
1096 | ||
c378b511 DT |
1097 | if (psmouse_try_protocol(psmouse, PSMOUSE_PS2PP, |
1098 | &max_proto, set_properties, true)) | |
24bf10ab | 1099 | return PSMOUSE_PS2PP; |
1da177e4 | 1100 | |
c378b511 DT |
1101 | if (psmouse_try_protocol(psmouse, PSMOUSE_TRACKPOINT, |
1102 | &max_proto, set_properties, true)) | |
24bf10ab | 1103 | return PSMOUSE_TRACKPOINT; |
1da177e4 | 1104 | |
c378b511 DT |
1105 | if (psmouse_try_protocol(psmouse, PSMOUSE_TOUCHKIT_PS2, |
1106 | &max_proto, set_properties, true)) | |
24bf10ab SL |
1107 | return PSMOUSE_TOUCHKIT_PS2; |
1108 | } | |
ba44995a | 1109 | |
ad530771 DT |
1110 | /* |
1111 | * Try Finger Sensing Pad. We do it here because its probe upsets | |
1112 | * Trackpoint devices (causing TP_READ_ID command to time out). | |
1113 | */ | |
c378b511 DT |
1114 | if (max_proto > PSMOUSE_IMEX && |
1115 | psmouse_try_protocol(psmouse, PSMOUSE_FSP, | |
1116 | &max_proto, set_properties, true)) { | |
1117 | return PSMOUSE_FSP; | |
4a18b3ab TL |
1118 | } |
1119 | ||
ad530771 DT |
1120 | /* |
1121 | * Reset to defaults in case the device got confused by extended | |
1122 | * protocol probes. Note that we follow up with full reset because | |
1123 | * some mice put themselves to sleep when they see PSMOUSE_RESET_DIS. | |
1124 | */ | |
554fc193 | 1125 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); |
ba44995a | 1126 | psmouse_reset(psmouse); |
1da177e4 | 1127 | |
ee9dfd7a | 1128 | if (max_proto >= PSMOUSE_IMEX && |
c378b511 DT |
1129 | psmouse_try_protocol(psmouse, PSMOUSE_IMEX, |
1130 | &max_proto, set_properties, true)) { | |
1da177e4 | 1131 | return PSMOUSE_IMEX; |
ee9dfd7a | 1132 | } |
1da177e4 | 1133 | |
ee9dfd7a | 1134 | if (max_proto >= PSMOUSE_IMPS && |
c378b511 DT |
1135 | psmouse_try_protocol(psmouse, PSMOUSE_IMPS, |
1136 | &max_proto, set_properties, true)) { | |
1da177e4 | 1137 | return PSMOUSE_IMPS; |
ee9dfd7a | 1138 | } |
1da177e4 | 1139 | |
ad530771 DT |
1140 | /* |
1141 | * Okay, all failed, we have a standard mouse here. The number of | |
1142 | * the buttons is still a question, though. We assume 3. | |
1143 | */ | |
c378b511 DT |
1144 | psmouse_try_protocol(psmouse, PSMOUSE_PS2, |
1145 | &max_proto, set_properties, true); | |
1da177e4 LT |
1146 | |
1147 | if (synaptics_hardware) { | |
ad530771 DT |
1148 | /* |
1149 | * We detected Synaptics hardware but it did not respond to | |
1150 | * IMPS/2 probes. We need to reset the touchpad because if | |
1151 | * there is a track point on the pass through port it could | |
1152 | * get disabled while probing for protocol extensions. | |
1153 | */ | |
1da177e4 | 1154 | psmouse_reset(psmouse); |
1da177e4 LT |
1155 | } |
1156 | ||
1157 | return PSMOUSE_PS2; | |
1158 | } | |
1159 | ||
1160 | /* | |
1161 | * psmouse_probe() probes for a PS/2 mouse. | |
1162 | */ | |
1da177e4 LT |
1163 | static int psmouse_probe(struct psmouse *psmouse) |
1164 | { | |
1165 | struct ps2dev *ps2dev = &psmouse->ps2dev; | |
1166 | unsigned char param[2]; | |
1167 | ||
ad530771 DT |
1168 | /* |
1169 | * First, we check if it's a mouse. It should send 0x00 or 0x03 in | |
1170 | * case of an IntelliMouse in 4-byte mode or 0x04 for IM Explorer. | |
1171 | * Sunrex K8561 IR Keyboard/Mouse reports 0xff on second and | |
1172 | * subsequent ID queries, probably due to a firmware bug. | |
1173 | */ | |
1da177e4 LT |
1174 | param[0] = 0xa5; |
1175 | if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) | |
1176 | return -1; | |
1177 | ||
7741e931 VP |
1178 | if (param[0] != 0x00 && param[0] != 0x03 && |
1179 | param[0] != 0x04 && param[0] != 0xff) | |
1da177e4 LT |
1180 | return -1; |
1181 | ||
ad530771 DT |
1182 | /* |
1183 | * Then we reset and disable the mouse so that it doesn't generate | |
1184 | * events. | |
1185 | */ | |
1da177e4 | 1186 | if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_DIS)) |
b5d21704 DT |
1187 | psmouse_warn(psmouse, "Failed to reset mouse on %s\n", |
1188 | ps2dev->serio->phys); | |
1da177e4 LT |
1189 | |
1190 | return 0; | |
1191 | } | |
1192 | ||
1da177e4 LT |
1193 | /* |
1194 | * psmouse_initialize() initializes the mouse to a sane state. | |
1195 | */ | |
1da177e4 LT |
1196 | static void psmouse_initialize(struct psmouse *psmouse) |
1197 | { | |
ad530771 DT |
1198 | /* |
1199 | * We set the mouse report rate, resolution and scaling. | |
1200 | */ | |
1da177e4 LT |
1201 | if (psmouse_max_proto != PSMOUSE_PS2) { |
1202 | psmouse->set_rate(psmouse, psmouse->rate); | |
1203 | psmouse->set_resolution(psmouse, psmouse->resolution); | |
4ec212f0 | 1204 | psmouse->set_scale(psmouse, PSMOUSE_SCALE11); |
1da177e4 LT |
1205 | } |
1206 | } | |
1207 | ||
1da177e4 LT |
1208 | /* |
1209 | * psmouse_activate() enables the mouse so that we get motion reports from it. | |
1210 | */ | |
bd26f3d6 | 1211 | int psmouse_activate(struct psmouse *psmouse) |
1da177e4 | 1212 | { |
bd26f3d6 | 1213 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { |
b5d21704 DT |
1214 | psmouse_warn(psmouse, "Failed to enable mouse on %s\n", |
1215 | psmouse->ps2dev.serio->phys); | |
bd26f3d6 AS |
1216 | return -1; |
1217 | } | |
1da177e4 LT |
1218 | |
1219 | psmouse_set_state(psmouse, PSMOUSE_ACTIVATED); | |
bd26f3d6 | 1220 | return 0; |
1da177e4 LT |
1221 | } |
1222 | ||
1da177e4 | 1223 | /* |
ad530771 DT |
1224 | * psmouse_deactivate() puts the mouse into poll mode so that we don't get |
1225 | * motion reports from it unless we explicitly request it. | |
1da177e4 | 1226 | */ |
bd26f3d6 | 1227 | int psmouse_deactivate(struct psmouse *psmouse) |
1da177e4 | 1228 | { |
bd26f3d6 | 1229 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE)) { |
b5d21704 DT |
1230 | psmouse_warn(psmouse, "Failed to deactivate mouse on %s\n", |
1231 | psmouse->ps2dev.serio->phys); | |
bd26f3d6 AS |
1232 | return -1; |
1233 | } | |
1da177e4 LT |
1234 | |
1235 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
bd26f3d6 | 1236 | return 0; |
1da177e4 LT |
1237 | } |
1238 | ||
f0d5c6f4 DT |
1239 | /* |
1240 | * psmouse_resync() attempts to re-validate current protocol. | |
1241 | */ | |
c4028958 | 1242 | static void psmouse_resync(struct work_struct *work) |
f0d5c6f4 | 1243 | { |
c4028958 | 1244 | struct psmouse *parent = NULL, *psmouse = |
8bf020ee | 1245 | container_of(work, struct psmouse, resync_work.work); |
f0d5c6f4 DT |
1246 | struct serio *serio = psmouse->ps2dev.serio; |
1247 | psmouse_ret_t rc = PSMOUSE_GOOD_DATA; | |
b7802c5c | 1248 | bool failed = false, enabled = false; |
f0d5c6f4 DT |
1249 | int i; |
1250 | ||
c14471dc | 1251 | mutex_lock(&psmouse_mutex); |
f0d5c6f4 DT |
1252 | |
1253 | if (psmouse->state != PSMOUSE_RESYNCING) | |
1254 | goto out; | |
1255 | ||
1256 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1257 | parent = serio_get_drvdata(serio->parent); | |
1258 | psmouse_deactivate(parent); | |
1259 | } | |
1260 | ||
ad530771 DT |
1261 | /* |
1262 | * Some mice don't ACK commands sent while they are in the middle of | |
1263 | * transmitting motion packet. To avoid delay we use ps2_sendbyte() | |
1264 | * instead of ps2_command() which would wait for 200ms for an ACK | |
1265 | * that may never come. | |
1266 | * As an additional quirk ALPS touchpads may not only forget to ACK | |
1267 | * disable command but will stop reporting taps, so if we see that | |
1268 | * mouse at least once ACKs disable we will do full reconnect if ACK | |
1269 | * is missing. | |
1270 | */ | |
f0d5c6f4 DT |
1271 | psmouse->num_resyncs++; |
1272 | ||
1273 | if (ps2_sendbyte(&psmouse->ps2dev, PSMOUSE_CMD_DISABLE, 20)) { | |
1274 | if (psmouse->num_resyncs < 3 || psmouse->acks_disable_command) | |
b7802c5c | 1275 | failed = true; |
f0d5c6f4 | 1276 | } else |
b7802c5c | 1277 | psmouse->acks_disable_command = true; |
f0d5c6f4 | 1278 | |
ad530771 DT |
1279 | /* |
1280 | * Poll the mouse. If it was reset the packet will be shorter than | |
1281 | * psmouse->pktsize and ps2_command will fail. We do not expect and | |
1282 | * do not handle scenario when mouse "upgrades" its protocol while | |
1283 | * disconnected since it would require additional delay. If we ever | |
1284 | * see a mouse that does it we'll adjust the code. | |
1285 | */ | |
f0d5c6f4 DT |
1286 | if (!failed) { |
1287 | if (psmouse->poll(psmouse)) | |
b7802c5c | 1288 | failed = true; |
f0d5c6f4 DT |
1289 | else { |
1290 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
1291 | for (i = 0; i < psmouse->pktsize; i++) { | |
1292 | psmouse->pktcnt++; | |
7d12e780 | 1293 | rc = psmouse->protocol_handler(psmouse); |
f0d5c6f4 DT |
1294 | if (rc != PSMOUSE_GOOD_DATA) |
1295 | break; | |
1296 | } | |
1297 | if (rc != PSMOUSE_FULL_PACKET) | |
b7802c5c | 1298 | failed = true; |
f0d5c6f4 DT |
1299 | psmouse_set_state(psmouse, PSMOUSE_RESYNCING); |
1300 | } | |
1301 | } | |
ad530771 DT |
1302 | |
1303 | /* | |
1304 | * Now try to enable mouse. We try to do that even if poll failed | |
1305 | * and also repeat our attempts 5 times, otherwise we may be left | |
1306 | * out with disabled mouse. | |
1307 | */ | |
f0d5c6f4 DT |
1308 | for (i = 0; i < 5; i++) { |
1309 | if (!ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { | |
b7802c5c | 1310 | enabled = true; |
f0d5c6f4 DT |
1311 | break; |
1312 | } | |
1313 | msleep(200); | |
1314 | } | |
1315 | ||
1316 | if (!enabled) { | |
b5d21704 DT |
1317 | psmouse_warn(psmouse, "failed to re-enable mouse on %s\n", |
1318 | psmouse->ps2dev.serio->phys); | |
b7802c5c | 1319 | failed = true; |
f0d5c6f4 DT |
1320 | } |
1321 | ||
1322 | if (failed) { | |
1323 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
b5d21704 DT |
1324 | psmouse_info(psmouse, |
1325 | "resync failed, issuing reconnect request\n"); | |
f0d5c6f4 DT |
1326 | serio_reconnect(serio); |
1327 | } else | |
1328 | psmouse_set_state(psmouse, PSMOUSE_ACTIVATED); | |
1329 | ||
1330 | if (parent) | |
1331 | psmouse_activate(parent); | |
1332 | out: | |
c14471dc | 1333 | mutex_unlock(&psmouse_mutex); |
f0d5c6f4 | 1334 | } |
1da177e4 LT |
1335 | |
1336 | /* | |
1337 | * psmouse_cleanup() resets the mouse into power-on state. | |
1338 | */ | |
1da177e4 LT |
1339 | static void psmouse_cleanup(struct serio *serio) |
1340 | { | |
1341 | struct psmouse *psmouse = serio_get_drvdata(serio); | |
a1cec061 DT |
1342 | struct psmouse *parent = NULL; |
1343 | ||
1344 | mutex_lock(&psmouse_mutex); | |
1345 | ||
1346 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1347 | parent = serio_get_drvdata(serio->parent); | |
1348 | psmouse_deactivate(parent); | |
1349 | } | |
1350 | ||
a9f0c381 DT |
1351 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); |
1352 | ||
1353 | /* | |
1354 | * Disable stream mode so cleanup routine can proceed undisturbed. | |
1355 | */ | |
1356 | if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE)) | |
b5d21704 DT |
1357 | psmouse_warn(psmouse, "Failed to disable mouse on %s\n", |
1358 | psmouse->ps2dev.serio->phys); | |
a1cec061 DT |
1359 | |
1360 | if (psmouse->cleanup) | |
1361 | psmouse->cleanup(psmouse); | |
1da177e4 | 1362 | |
ad530771 DT |
1363 | /* |
1364 | * Reset the mouse to defaults (bare PS/2 protocol). | |
1365 | */ | |
4a299bf5 | 1366 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS); |
a1cec061 | 1367 | |
ad530771 DT |
1368 | /* |
1369 | * Some boxes, such as HP nx7400, get terribly confused if mouse | |
1370 | * is not fully enabled before suspending/shutting down. | |
1371 | */ | |
a1cec061 DT |
1372 | ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE); |
1373 | ||
1374 | if (parent) { | |
1375 | if (parent->pt_deactivate) | |
1376 | parent->pt_deactivate(parent); | |
1377 | ||
1378 | psmouse_activate(parent); | |
1379 | } | |
1380 | ||
1381 | mutex_unlock(&psmouse_mutex); | |
1da177e4 LT |
1382 | } |
1383 | ||
1384 | /* | |
1385 | * psmouse_disconnect() closes and frees. | |
1386 | */ | |
1da177e4 LT |
1387 | static void psmouse_disconnect(struct serio *serio) |
1388 | { | |
04df1925 DT |
1389 | struct psmouse *psmouse, *parent = NULL; |
1390 | ||
1391 | psmouse = serio_get_drvdata(serio); | |
1da177e4 | 1392 | |
cfe9e888 | 1393 | sysfs_remove_group(&serio->dev.kobj, &psmouse_attribute_group); |
1da177e4 | 1394 | |
c14471dc | 1395 | mutex_lock(&psmouse_mutex); |
04df1925 | 1396 | |
1da177e4 LT |
1397 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); |
1398 | ||
f0d5c6f4 | 1399 | /* make sure we don't have a resync in progress */ |
c14471dc | 1400 | mutex_unlock(&psmouse_mutex); |
f0d5c6f4 | 1401 | flush_workqueue(kpsmoused_wq); |
c14471dc | 1402 | mutex_lock(&psmouse_mutex); |
f0d5c6f4 | 1403 | |
1da177e4 LT |
1404 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { |
1405 | parent = serio_get_drvdata(serio->parent); | |
04df1925 | 1406 | psmouse_deactivate(parent); |
1da177e4 LT |
1407 | } |
1408 | ||
1409 | if (psmouse->disconnect) | |
1410 | psmouse->disconnect(psmouse); | |
1411 | ||
04df1925 DT |
1412 | if (parent && parent->pt_deactivate) |
1413 | parent->pt_deactivate(parent); | |
1414 | ||
1da177e4 LT |
1415 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); |
1416 | ||
1da177e4 LT |
1417 | serio_close(serio); |
1418 | serio_set_drvdata(serio, NULL); | |
2e5b636b | 1419 | input_unregister_device(psmouse->dev); |
1da177e4 | 1420 | kfree(psmouse); |
04df1925 DT |
1421 | |
1422 | if (parent) | |
1423 | psmouse_activate(parent); | |
1424 | ||
c14471dc | 1425 | mutex_unlock(&psmouse_mutex); |
1da177e4 LT |
1426 | } |
1427 | ||
315eb996 DT |
1428 | static int psmouse_switch_protocol(struct psmouse *psmouse, |
1429 | const struct psmouse_protocol *proto) | |
dbf4ccd6 | 1430 | { |
6b9d363c | 1431 | const struct psmouse_protocol *selected_proto; |
2e5b636b | 1432 | struct input_dev *input_dev = psmouse->dev; |
dbf4ccd6 | 1433 | |
28aa7f1c | 1434 | input_dev->dev.parent = &psmouse->ps2dev.serio->dev; |
dbf4ccd6 | 1435 | |
dbf4ccd6 | 1436 | if (proto && (proto->detect || proto->init)) { |
ee9dfd7a DT |
1437 | psmouse_apply_defaults(psmouse); |
1438 | ||
a62f0d27 | 1439 | if (proto->detect && proto->detect(psmouse, true) < 0) |
dbf4ccd6 DT |
1440 | return -1; |
1441 | ||
1442 | if (proto->init && proto->init(psmouse) < 0) | |
1443 | return -1; | |
1444 | ||
1445 | psmouse->type = proto->type; | |
6b9d363c DT |
1446 | selected_proto = proto; |
1447 | } else { | |
b7802c5c DT |
1448 | psmouse->type = psmouse_extensions(psmouse, |
1449 | psmouse_max_proto, true); | |
6b9d363c DT |
1450 | selected_proto = psmouse_protocol_by_type(psmouse->type); |
1451 | } | |
1452 | ||
1453 | psmouse->ignore_parity = selected_proto->ignore_parity; | |
dbf4ccd6 | 1454 | |
f0d5c6f4 DT |
1455 | /* |
1456 | * If mouse's packet size is 3 there is no point in polling the | |
1457 | * device in hopes to detect protocol reset - we won't get less | |
1458 | * than 3 bytes response anyhow. | |
1459 | */ | |
1460 | if (psmouse->pktsize == 3) | |
1461 | psmouse->resync_time = 0; | |
1462 | ||
1463 | /* | |
1464 | * Some smart KVMs fake response to POLL command returning just | |
1465 | * 3 bytes and messing up our resync logic, so if initial poll | |
1466 | * fails we won't try polling the device anymore. Hopefully | |
1467 | * such KVM will maintain initially selected protocol. | |
1468 | */ | |
1469 | if (psmouse->resync_time && psmouse->poll(psmouse)) | |
1470 | psmouse->resync_time = 0; | |
1471 | ||
08ffce45 | 1472 | snprintf(psmouse->devname, sizeof(psmouse->devname), "%s %s %s", |
6b9d363c | 1473 | selected_proto->name, psmouse->vendor, psmouse->name); |
dbf4ccd6 | 1474 | |
2e5b636b DT |
1475 | input_dev->name = psmouse->devname; |
1476 | input_dev->phys = psmouse->phys; | |
1477 | input_dev->id.bustype = BUS_I8042; | |
1478 | input_dev->id.vendor = 0x0002; | |
1479 | input_dev->id.product = psmouse->type; | |
1480 | input_dev->id.version = psmouse->model; | |
dbf4ccd6 DT |
1481 | |
1482 | return 0; | |
1483 | } | |
1484 | ||
1da177e4 LT |
1485 | /* |
1486 | * psmouse_connect() is a callback from the serio module when | |
1487 | * an unhandled serio port is found. | |
1488 | */ | |
1489 | static int psmouse_connect(struct serio *serio, struct serio_driver *drv) | |
1490 | { | |
1491 | struct psmouse *psmouse, *parent = NULL; | |
2e5b636b | 1492 | struct input_dev *input_dev; |
72155615 | 1493 | int retval = 0, error = -ENOMEM; |
1da177e4 | 1494 | |
c14471dc | 1495 | mutex_lock(&psmouse_mutex); |
04df1925 | 1496 | |
1da177e4 LT |
1497 | /* |
1498 | * If this is a pass-through port deactivate parent so the device | |
1499 | * connected to this port can be successfully identified | |
1500 | */ | |
1501 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1502 | parent = serio_get_drvdata(serio->parent); | |
1503 | psmouse_deactivate(parent); | |
1504 | } | |
1505 | ||
2e5b636b DT |
1506 | psmouse = kzalloc(sizeof(struct psmouse), GFP_KERNEL); |
1507 | input_dev = input_allocate_device(); | |
1508 | if (!psmouse || !input_dev) | |
72155615 | 1509 | goto err_free; |
1da177e4 | 1510 | |
1da177e4 | 1511 | ps2_init(&psmouse->ps2dev, serio); |
8bf020ee | 1512 | INIT_DELAYED_WORK(&psmouse->resync_work, psmouse_resync); |
2e5b636b | 1513 | psmouse->dev = input_dev; |
08ffce45 | 1514 | snprintf(psmouse->phys, sizeof(psmouse->phys), "%s/input0", serio->phys); |
dbf4ccd6 | 1515 | |
1da177e4 LT |
1516 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); |
1517 | ||
1518 | serio_set_drvdata(serio, psmouse); | |
1519 | ||
72155615 DT |
1520 | error = serio_open(serio, drv); |
1521 | if (error) | |
1522 | goto err_clear_drvdata; | |
1da177e4 | 1523 | |
66bc2f51 SA |
1524 | /* give PT device some time to settle down before probing */ |
1525 | if (serio->id.type == SERIO_PS_PSTHRU) | |
1526 | usleep_range(10000, 15000); | |
1527 | ||
1da177e4 | 1528 | if (psmouse_probe(psmouse) < 0) { |
72155615 DT |
1529 | error = -ENODEV; |
1530 | goto err_close_serio; | |
1da177e4 LT |
1531 | } |
1532 | ||
1533 | psmouse->rate = psmouse_rate; | |
1534 | psmouse->resolution = psmouse_resolution; | |
1535 | psmouse->resetafter = psmouse_resetafter; | |
f0d5c6f4 | 1536 | psmouse->resync_time = parent ? 0 : psmouse_resync_time; |
1da177e4 | 1537 | psmouse->smartscroll = psmouse_smartscroll; |
1da177e4 | 1538 | |
dbf4ccd6 | 1539 | psmouse_switch_protocol(psmouse, NULL); |
1da177e4 | 1540 | |
1da177e4 | 1541 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); |
1da177e4 LT |
1542 | psmouse_initialize(psmouse); |
1543 | ||
72155615 DT |
1544 | error = input_register_device(psmouse->dev); |
1545 | if (error) | |
1546 | goto err_protocol_disconnect; | |
2e5b636b | 1547 | |
1da177e4 LT |
1548 | if (parent && parent->pt_activate) |
1549 | parent->pt_activate(parent); | |
1550 | ||
72155615 DT |
1551 | error = sysfs_create_group(&serio->dev.kobj, &psmouse_attribute_group); |
1552 | if (error) | |
1553 | goto err_pt_deactivate; | |
1da177e4 LT |
1554 | |
1555 | psmouse_activate(psmouse); | |
1556 | ||
72155615 | 1557 | out: |
04df1925 | 1558 | /* If this is a pass-through port the parent needs to be re-activated */ |
1da177e4 LT |
1559 | if (parent) |
1560 | psmouse_activate(parent); | |
1561 | ||
c14471dc | 1562 | mutex_unlock(&psmouse_mutex); |
1da177e4 | 1563 | return retval; |
72155615 DT |
1564 | |
1565 | err_pt_deactivate: | |
1566 | if (parent && parent->pt_deactivate) | |
1567 | parent->pt_deactivate(parent); | |
746b31a9 AS |
1568 | input_unregister_device(psmouse->dev); |
1569 | input_dev = NULL; /* so we don't try to free it below */ | |
72155615 DT |
1570 | err_protocol_disconnect: |
1571 | if (psmouse->disconnect) | |
1572 | psmouse->disconnect(psmouse); | |
1573 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
1574 | err_close_serio: | |
1575 | serio_close(serio); | |
1576 | err_clear_drvdata: | |
1577 | serio_set_drvdata(serio, NULL); | |
1578 | err_free: | |
1579 | input_free_device(input_dev); | |
1580 | kfree(psmouse); | |
1581 | ||
1582 | retval = error; | |
1583 | goto out; | |
1da177e4 LT |
1584 | } |
1585 | ||
1da177e4 LT |
1586 | static int psmouse_reconnect(struct serio *serio) |
1587 | { | |
1588 | struct psmouse *psmouse = serio_get_drvdata(serio); | |
1589 | struct psmouse *parent = NULL; | |
ef110b24 | 1590 | unsigned char type; |
1da177e4 LT |
1591 | int rc = -1; |
1592 | ||
c14471dc | 1593 | mutex_lock(&psmouse_mutex); |
04df1925 | 1594 | |
1da177e4 LT |
1595 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { |
1596 | parent = serio_get_drvdata(serio->parent); | |
1597 | psmouse_deactivate(parent); | |
1598 | } | |
1599 | ||
1600 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); | |
1601 | ||
1602 | if (psmouse->reconnect) { | |
1603 | if (psmouse->reconnect(psmouse)) | |
1604 | goto out; | |
ef110b24 DT |
1605 | } else { |
1606 | psmouse_reset(psmouse); | |
1607 | ||
1608 | if (psmouse_probe(psmouse) < 0) | |
1609 | goto out; | |
1610 | ||
1611 | type = psmouse_extensions(psmouse, psmouse_max_proto, false); | |
1612 | if (psmouse->type != type) | |
1613 | goto out; | |
b7802c5c | 1614 | } |
1da177e4 | 1615 | |
b5d21704 DT |
1616 | /* |
1617 | * OK, the device type (and capabilities) match the old one, | |
1618 | * we can continue using it, complete initialization | |
1da177e4 LT |
1619 | */ |
1620 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
1621 | ||
1622 | psmouse_initialize(psmouse); | |
1623 | ||
1624 | if (parent && parent->pt_activate) | |
1625 | parent->pt_activate(parent); | |
1626 | ||
1627 | psmouse_activate(psmouse); | |
1628 | rc = 0; | |
1629 | ||
1630 | out: | |
1631 | /* If this is a pass-through port the parent waits to be activated */ | |
1632 | if (parent) | |
1633 | psmouse_activate(parent); | |
1634 | ||
c14471dc | 1635 | mutex_unlock(&psmouse_mutex); |
1da177e4 LT |
1636 | return rc; |
1637 | } | |
1638 | ||
1639 | static struct serio_device_id psmouse_serio_ids[] = { | |
1640 | { | |
1641 | .type = SERIO_8042, | |
1642 | .proto = SERIO_ANY, | |
1643 | .id = SERIO_ANY, | |
1644 | .extra = SERIO_ANY, | |
1645 | }, | |
1646 | { | |
1647 | .type = SERIO_PS_PSTHRU, | |
1648 | .proto = SERIO_ANY, | |
1649 | .id = SERIO_ANY, | |
1650 | .extra = SERIO_ANY, | |
1651 | }, | |
1652 | { 0 } | |
1653 | }; | |
1654 | ||
1655 | MODULE_DEVICE_TABLE(serio, psmouse_serio_ids); | |
1656 | ||
1657 | static struct serio_driver psmouse_drv = { | |
1658 | .driver = { | |
1659 | .name = "psmouse", | |
1660 | }, | |
1661 | .description = DRIVER_DESC, | |
1662 | .id_table = psmouse_serio_ids, | |
1663 | .interrupt = psmouse_interrupt, | |
1664 | .connect = psmouse_connect, | |
1665 | .reconnect = psmouse_reconnect, | |
1666 | .disconnect = psmouse_disconnect, | |
1667 | .cleanup = psmouse_cleanup, | |
1668 | }; | |
1669 | ||
cfe9e888 DT |
1670 | ssize_t psmouse_attr_show_helper(struct device *dev, struct device_attribute *devattr, |
1671 | char *buf) | |
1da177e4 LT |
1672 | { |
1673 | struct serio *serio = to_serio_port(dev); | |
cfe9e888 DT |
1674 | struct psmouse_attribute *attr = to_psmouse_attr(devattr); |
1675 | struct psmouse *psmouse; | |
1da177e4 | 1676 | |
cfe9e888 DT |
1677 | psmouse = serio_get_drvdata(serio); |
1678 | ||
59b01513 | 1679 | return attr->show(psmouse, attr->data, buf); |
1da177e4 LT |
1680 | } |
1681 | ||
cfe9e888 DT |
1682 | ssize_t psmouse_attr_set_helper(struct device *dev, struct device_attribute *devattr, |
1683 | const char *buf, size_t count) | |
1da177e4 LT |
1684 | { |
1685 | struct serio *serio = to_serio_port(dev); | |
cfe9e888 DT |
1686 | struct psmouse_attribute *attr = to_psmouse_attr(devattr); |
1687 | struct psmouse *psmouse, *parent = NULL; | |
1da177e4 LT |
1688 | int retval; |
1689 | ||
c14471dc | 1690 | retval = mutex_lock_interruptible(&psmouse_mutex); |
04df1925 | 1691 | if (retval) |
59b01513 | 1692 | goto out; |
04df1925 | 1693 | |
cfe9e888 DT |
1694 | psmouse = serio_get_drvdata(serio); |
1695 | ||
68d48221 AS |
1696 | if (attr->protect) { |
1697 | if (psmouse->state == PSMOUSE_IGNORE) { | |
1698 | retval = -ENODEV; | |
1699 | goto out_unlock; | |
1700 | } | |
1da177e4 | 1701 | |
68d48221 AS |
1702 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { |
1703 | parent = serio_get_drvdata(serio->parent); | |
1704 | psmouse_deactivate(parent); | |
1705 | } | |
dbf4ccd6 | 1706 | |
68d48221 AS |
1707 | psmouse_deactivate(psmouse); |
1708 | } | |
1da177e4 | 1709 | |
cfe9e888 | 1710 | retval = attr->set(psmouse, attr->data, buf, count); |
1da177e4 | 1711 | |
68d48221 AS |
1712 | if (attr->protect) { |
1713 | if (retval != -ENODEV) | |
1714 | psmouse_activate(psmouse); | |
dbf4ccd6 | 1715 | |
68d48221 AS |
1716 | if (parent) |
1717 | psmouse_activate(parent); | |
1718 | } | |
1da177e4 | 1719 | |
c14471dc IM |
1720 | out_unlock: |
1721 | mutex_unlock(&psmouse_mutex); | |
59b01513 | 1722 | out: |
1da177e4 LT |
1723 | return retval; |
1724 | } | |
1725 | ||
cfe9e888 DT |
1726 | static ssize_t psmouse_show_int_attr(struct psmouse *psmouse, void *offset, char *buf) |
1727 | { | |
eb5d5829 | 1728 | unsigned int *field = (unsigned int *)((char *)psmouse + (size_t)offset); |
cfe9e888 | 1729 | |
eb5d5829 | 1730 | return sprintf(buf, "%u\n", *field); |
cfe9e888 DT |
1731 | } |
1732 | ||
1733 | static ssize_t psmouse_set_int_attr(struct psmouse *psmouse, void *offset, const char *buf, size_t count) | |
1734 | { | |
eb5d5829 | 1735 | unsigned int *field = (unsigned int *)((char *)psmouse + (size_t)offset); |
76496e7a JD |
1736 | unsigned int value; |
1737 | int err; | |
cfe9e888 | 1738 | |
76496e7a JD |
1739 | err = kstrtouint(buf, 10, &value); |
1740 | if (err) | |
1741 | return err; | |
eb5d5829 | 1742 | |
cfe9e888 DT |
1743 | *field = value; |
1744 | ||
1745 | return count; | |
1746 | } | |
1747 | ||
1748 | static ssize_t psmouse_attr_show_protocol(struct psmouse *psmouse, void *data, char *buf) | |
dbf4ccd6 DT |
1749 | { |
1750 | return sprintf(buf, "%s\n", psmouse_protocol_by_type(psmouse->type)->name); | |
1751 | } | |
1752 | ||
cfe9e888 | 1753 | static ssize_t psmouse_attr_set_protocol(struct psmouse *psmouse, void *data, const char *buf, size_t count) |
dbf4ccd6 DT |
1754 | { |
1755 | struct serio *serio = psmouse->ps2dev.serio; | |
1756 | struct psmouse *parent = NULL; | |
72155615 DT |
1757 | struct input_dev *old_dev, *new_dev; |
1758 | const struct psmouse_protocol *proto, *old_proto; | |
1759 | int error; | |
dbf4ccd6 DT |
1760 | int retry = 0; |
1761 | ||
72155615 DT |
1762 | proto = psmouse_protocol_by_name(buf, count); |
1763 | if (!proto) | |
dbf4ccd6 DT |
1764 | return -EINVAL; |
1765 | ||
1766 | if (psmouse->type == proto->type) | |
1767 | return count; | |
1768 | ||
72155615 DT |
1769 | new_dev = input_allocate_device(); |
1770 | if (!new_dev) | |
2e5b636b DT |
1771 | return -ENOMEM; |
1772 | ||
09822582 | 1773 | while (!list_empty(&serio->children)) { |
dbf4ccd6 | 1774 | if (++retry > 3) { |
b5d21704 DT |
1775 | psmouse_warn(psmouse, |
1776 | "failed to destroy children ports, protocol change aborted.\n"); | |
2e5b636b | 1777 | input_free_device(new_dev); |
dbf4ccd6 DT |
1778 | return -EIO; |
1779 | } | |
1780 | ||
c14471dc | 1781 | mutex_unlock(&psmouse_mutex); |
dbf4ccd6 | 1782 | serio_unregister_child_port(serio); |
c14471dc | 1783 | mutex_lock(&psmouse_mutex); |
dbf4ccd6 | 1784 | |
2e5b636b DT |
1785 | if (serio->drv != &psmouse_drv) { |
1786 | input_free_device(new_dev); | |
dbf4ccd6 | 1787 | return -ENODEV; |
2e5b636b | 1788 | } |
dbf4ccd6 | 1789 | |
2e5b636b DT |
1790 | if (psmouse->type == proto->type) { |
1791 | input_free_device(new_dev); | |
dbf4ccd6 | 1792 | return count; /* switched by other thread */ |
2e5b636b | 1793 | } |
dbf4ccd6 DT |
1794 | } |
1795 | ||
1796 | if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) { | |
1797 | parent = serio_get_drvdata(serio->parent); | |
1798 | if (parent->pt_deactivate) | |
1799 | parent->pt_deactivate(parent); | |
1800 | } | |
1801 | ||
72155615 DT |
1802 | old_dev = psmouse->dev; |
1803 | old_proto = psmouse_protocol_by_type(psmouse->type); | |
1804 | ||
dbf4ccd6 DT |
1805 | if (psmouse->disconnect) |
1806 | psmouse->disconnect(psmouse); | |
1807 | ||
1808 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
dbf4ccd6 | 1809 | |
2e5b636b | 1810 | psmouse->dev = new_dev; |
dbf4ccd6 DT |
1811 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); |
1812 | ||
1813 | if (psmouse_switch_protocol(psmouse, proto) < 0) { | |
1814 | psmouse_reset(psmouse); | |
1815 | /* default to PSMOUSE_PS2 */ | |
1816 | psmouse_switch_protocol(psmouse, &psmouse_protocols[0]); | |
1817 | } | |
1818 | ||
1819 | psmouse_initialize(psmouse); | |
1820 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
1821 | ||
72155615 DT |
1822 | error = input_register_device(psmouse->dev); |
1823 | if (error) { | |
1824 | if (psmouse->disconnect) | |
1825 | psmouse->disconnect(psmouse); | |
1826 | ||
1827 | psmouse_set_state(psmouse, PSMOUSE_IGNORE); | |
1828 | input_free_device(new_dev); | |
1829 | psmouse->dev = old_dev; | |
1830 | psmouse_set_state(psmouse, PSMOUSE_INITIALIZING); | |
1831 | psmouse_switch_protocol(psmouse, old_proto); | |
1832 | psmouse_initialize(psmouse); | |
1833 | psmouse_set_state(psmouse, PSMOUSE_CMD_MODE); | |
1834 | ||
1835 | return error; | |
1836 | } | |
1837 | ||
1838 | input_unregister_device(old_dev); | |
dbf4ccd6 DT |
1839 | |
1840 | if (parent && parent->pt_activate) | |
1841 | parent->pt_activate(parent); | |
1842 | ||
1843 | return count; | |
1844 | } | |
1845 | ||
cfe9e888 | 1846 | static ssize_t psmouse_attr_set_rate(struct psmouse *psmouse, void *data, const char *buf, size_t count) |
1da177e4 | 1847 | { |
76496e7a JD |
1848 | unsigned int value; |
1849 | int err; | |
1da177e4 | 1850 | |
76496e7a JD |
1851 | err = kstrtouint(buf, 10, &value); |
1852 | if (err) | |
1853 | return err; | |
1da177e4 LT |
1854 | |
1855 | psmouse->set_rate(psmouse, value); | |
1856 | return count; | |
1857 | } | |
1858 | ||
cfe9e888 | 1859 | static ssize_t psmouse_attr_set_resolution(struct psmouse *psmouse, void *data, const char *buf, size_t count) |
1da177e4 | 1860 | { |
76496e7a JD |
1861 | unsigned int value; |
1862 | int err; | |
1da177e4 | 1863 | |
76496e7a JD |
1864 | err = kstrtouint(buf, 10, &value); |
1865 | if (err) | |
1866 | return err; | |
1da177e4 LT |
1867 | |
1868 | psmouse->set_resolution(psmouse, value); | |
1869 | return count; | |
1870 | } | |
1871 | ||
1da177e4 | 1872 | |
9bbb9e5a | 1873 | static int psmouse_set_maxproto(const char *val, const struct kernel_param *kp) |
1da177e4 | 1874 | { |
e38de678 | 1875 | const struct psmouse_protocol *proto; |
1da177e4 LT |
1876 | |
1877 | if (!val) | |
1878 | return -EINVAL; | |
1879 | ||
dbf4ccd6 | 1880 | proto = psmouse_protocol_by_name(val, strlen(val)); |
1da177e4 | 1881 | |
dbf4ccd6 DT |
1882 | if (!proto || !proto->maxproto) |
1883 | return -EINVAL; | |
1da177e4 | 1884 | |
dbf4ccd6 | 1885 | *((unsigned int *)kp->arg) = proto->type; |
1da177e4 | 1886 | |
541e316a | 1887 | return 0; |
1da177e4 LT |
1888 | } |
1889 | ||
9bbb9e5a | 1890 | static int psmouse_get_maxproto(char *buffer, const struct kernel_param *kp) |
1da177e4 | 1891 | { |
dbf4ccd6 DT |
1892 | int type = *((unsigned int *)kp->arg); |
1893 | ||
3d4c3aa9 | 1894 | return sprintf(buffer, "%s", psmouse_protocol_by_type(type)->name); |
1da177e4 LT |
1895 | } |
1896 | ||
1897 | static int __init psmouse_init(void) | |
1898 | { | |
153a9df0 AM |
1899 | int err; |
1900 | ||
7705d548 DT |
1901 | lifebook_module_init(); |
1902 | synaptics_module_init(); | |
ca94ec43 | 1903 | hgpk_module_init(); |
7705d548 | 1904 | |
f0d5c6f4 DT |
1905 | kpsmoused_wq = create_singlethread_workqueue("kpsmoused"); |
1906 | if (!kpsmoused_wq) { | |
b5d21704 | 1907 | pr_err("failed to create kpsmoused workqueue\n"); |
f0d5c6f4 DT |
1908 | return -ENOMEM; |
1909 | } | |
1910 | ||
153a9df0 AM |
1911 | err = serio_register_driver(&psmouse_drv); |
1912 | if (err) | |
1913 | destroy_workqueue(kpsmoused_wq); | |
f0d5c6f4 | 1914 | |
153a9df0 | 1915 | return err; |
1da177e4 LT |
1916 | } |
1917 | ||
1918 | static void __exit psmouse_exit(void) | |
1919 | { | |
1920 | serio_unregister_driver(&psmouse_drv); | |
f0d5c6f4 | 1921 | destroy_workqueue(kpsmoused_wq); |
1da177e4 LT |
1922 | } |
1923 | ||
1924 | module_init(psmouse_init); | |
1925 | module_exit(psmouse_exit); |