blob: 5784e20542a473e5c041eec3c092f309d59344bc [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
Dmitry Torokhovb5d21702011-10-10 18:27:03 -070014#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
15#define psmouse_fmt(fmt) fmt
16
Linus Torvalds1da177e2005-04-16 15:20:36 -070017#include <linux/delay.h>
18#include <linux/module.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070019#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>
Ingo Molnarc14471d2006-02-19 00:22:11 -050025#include <linux/mutex.h>
26
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#include "psmouse.h"
28#include "synaptics.h"
29#include "logips2pp.h"
30#include "alps.h"
Andres Salomondf08ef22008-09-16 12:30:34 -040031#include "hgpk.h"
Kenan Esau02d7f582005-05-29 02:30:22 -050032#include "lifebook.h"
Stephen Evanchik541e3162005-08-08 01:26:18 -050033#include "trackpoint.h"
Stefan Lucke24bf10a2007-02-18 01:49:10 -050034#include "touchkit_ps2.h"
Arjan Opmeer2a0bd752008-10-16 22:10:19 -040035#include "elantech.h"
Tai-hwa Liangfc69f4a2009-05-10 18:15:39 -070036#include "sentelic.h"
Dudley Du0799a922013-01-05 00:14:22 -080037#include "cypress_ps2.h"
Hans de Goede3ace3682014-09-12 17:24:47 -070038#include "focaltech.h"
Thomas Hellstrom8b8be512015-04-14 10:06:38 -070039#include "vmmouse.h"
Chris Diamand98ee3772016-01-27 17:04:35 -080040#include "byd.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070041
42#define DRIVER_DESC "PS/2 mouse driver"
43
44MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
45MODULE_DESCRIPTION(DRIVER_DESC);
46MODULE_LICENSE("GPL");
47
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -050048static unsigned int psmouse_max_proto = PSMOUSE_AUTO;
Rusty Russell9bbb9e52010-08-11 23:04:12 -060049static int psmouse_set_maxproto(const char *val, const struct kernel_param *);
50static int psmouse_get_maxproto(char *buffer, const struct kernel_param *kp);
Luis R. Rodriguez9c278472015-05-27 11:09:38 +093051static const struct kernel_param_ops param_ops_proto_abbrev = {
Rusty Russell9bbb9e52010-08-11 23:04:12 -060052 .set = psmouse_set_maxproto,
53 .get = psmouse_get_maxproto,
54};
Linus Torvalds1da177e2005-04-16 15:20:36 -070055#define param_check_proto_abbrev(name, p) __param_check(name, p, unsigned int)
Linus Torvalds1da177e2005-04-16 15:20:36 -070056module_param_named(proto, psmouse_max_proto, proto_abbrev, 0644);
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -050057MODULE_PARM_DESC(proto, "Highest protocol extension to probe (bare, imps, exps, any). Useful for KVM switches.");
Linus Torvalds1da177e2005-04-16 15:20:36 -070058
59static unsigned int psmouse_resolution = 200;
60module_param_named(resolution, psmouse_resolution, uint, 0644);
61MODULE_PARM_DESC(resolution, "Resolution, in dpi.");
62
63static unsigned int psmouse_rate = 100;
64module_param_named(rate, psmouse_rate, uint, 0644);
65MODULE_PARM_DESC(rate, "Report rate, in reports per second.");
66
Shailendra Vermafeb9eba2015-05-26 14:07:12 -070067static bool psmouse_smartscroll = true;
Linus Torvalds1da177e2005-04-16 15:20:36 -070068module_param_named(smartscroll, psmouse_smartscroll, bool, 0644);
69MODULE_PARM_DESC(smartscroll, "Logitech Smartscroll autorepeat, 1 = enabled (default), 0 = disabled.");
70
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -050071static unsigned int psmouse_resetafter = 5;
Linus Torvalds1da177e2005-04-16 15:20:36 -070072module_param_named(resetafter, psmouse_resetafter, uint, 0644);
73MODULE_PARM_DESC(resetafter, "Reset device after so many bad packets (0 = never).");
74
Dmitry Torokhov8bd0ee92006-03-11 00:23:38 -050075static unsigned int psmouse_resync_time;
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -050076module_param_named(resync_time, psmouse_resync_time, uint, 0644);
77MODULE_PARM_DESC(resync_time, "How long can mouse stay idle before forcing resync (in seconds, 0 = never).");
78
Dmitry Torokhovcfe9e882005-09-04 01:40:20 -050079PSMOUSE_DEFINE_ATTR(protocol, S_IWUSR | S_IRUGO,
80 NULL,
81 psmouse_attr_show_protocol, psmouse_attr_set_protocol);
82PSMOUSE_DEFINE_ATTR(rate, S_IWUSR | S_IRUGO,
83 (void *) offsetof(struct psmouse, rate),
84 psmouse_show_int_attr, psmouse_attr_set_rate);
85PSMOUSE_DEFINE_ATTR(resolution, S_IWUSR | S_IRUGO,
86 (void *) offsetof(struct psmouse, resolution),
87 psmouse_show_int_attr, psmouse_attr_set_resolution);
88PSMOUSE_DEFINE_ATTR(resetafter, S_IWUSR | S_IRUGO,
89 (void *) offsetof(struct psmouse, resetafter),
90 psmouse_show_int_attr, psmouse_set_int_attr);
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -050091PSMOUSE_DEFINE_ATTR(resync_time, S_IWUSR | S_IRUGO,
92 (void *) offsetof(struct psmouse, resync_time),
93 psmouse_show_int_attr, psmouse_set_int_attr);
Dmitry Torokhovcfe9e882005-09-04 01:40:20 -050094
95static struct attribute *psmouse_attributes[] = {
96 &psmouse_attr_protocol.dattr.attr,
97 &psmouse_attr_rate.dattr.attr,
98 &psmouse_attr_resolution.dattr.attr,
99 &psmouse_attr_resetafter.dattr.attr,
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -0500100 &psmouse_attr_resync_time.dattr.attr,
Dmitry Torokhovcfe9e882005-09-04 01:40:20 -0500101 NULL
102};
103
104static struct attribute_group psmouse_attribute_group = {
105 .attrs = psmouse_attributes,
106};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107
Dmitry Torokhov04df1922005-06-01 02:39:44 -0500108/*
Ingo Molnarc14471d2006-02-19 00:22:11 -0500109 * psmouse_mutex protects all operations changing state of mouse
Dmitry Torokhov04df1922005-06-01 02:39:44 -0500110 * (connecting, disconnecting, changing rate or resolution via
111 * sysfs). We could use a per-device semaphore but since there
112 * rarely more than one PS/2 mouse connected and since semaphore
113 * is taken in "slow" paths it is not worth it.
114 */
Ingo Molnarc14471d2006-02-19 00:22:11 -0500115static DEFINE_MUTEX(psmouse_mutex);
Dmitry Torokhov04df1922005-06-01 02:39:44 -0500116
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -0500117static struct workqueue_struct *kpsmoused_wq;
118
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -0500119struct psmouse_protocol {
120 enum psmouse_type type;
Dmitry Torokhovb7802c52009-09-09 19:13:20 -0700121 bool maxproto;
Dmitry Torokhov6b9d363c2010-04-19 00:42:16 -0700122 bool ignore_parity; /* Protocol should ignore parity errors from KBC */
Dmitry Torokhovec6184b2015-11-24 12:58:46 -0800123 bool try_passthru; /* Try protocol also on passthrough ports */
Helge Dellere38de672006-09-10 21:54:39 -0400124 const char *name;
125 const char *alias;
Dmitry Torokhovb7802c52009-09-09 19:13:20 -0700126 int (*detect)(struct psmouse *, bool);
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -0500127 int (*init)(struct psmouse *);
128};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129
130/*
131 * psmouse_process_byte() analyzes the PS/2 data stream and reports
132 * relevant events to the input module once full packet has arrived.
133 */
Daniel Drake7968a5d2011-11-08 00:00:35 -0800134psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135{
Dmitry Torokhov2e5b6362005-09-15 02:01:44 -0500136 struct input_dev *dev = psmouse->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137 unsigned char *packet = psmouse->packet;
138
139 if (psmouse->pktcnt < psmouse->pktsize)
140 return PSMOUSE_GOOD_DATA;
141
Dmitry Torokhov0a88d602015-11-27 20:29:22 -0800142 /* Full packet accumulated, process it */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143
Dmitry Torokhov0a88d602015-11-27 20:29:22 -0800144 switch (psmouse->type) {
145 case PSMOUSE_IMPS:
146 /* IntelliMouse has scroll wheel */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147 input_report_rel(dev, REL_WHEEL, -(signed char) packet[3]);
Dmitry Torokhov0a88d602015-11-27 20:29:22 -0800148 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149
Dmitry Torokhov0a88d602015-11-27 20:29:22 -0800150 case PSMOUSE_IMEX:
151 /* Scroll wheel and buttons on IntelliMouse Explorer */
Pozsar Balazsb0c9ad82006-06-26 01:56:08 -0400152 switch (packet[3] & 0xC0) {
Dmitry Torokhova62f0d22010-05-19 10:39:17 -0700153 case 0x80: /* vertical scroll on IntelliMouse Explorer 4.0 */
154 input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31));
155 break;
156 case 0x40: /* horizontal scroll on IntelliMouse Explorer 4.0 */
157 input_report_rel(dev, REL_HWHEEL, (int) (packet[3] & 32) - (int) (packet[3] & 31));
158 break;
159 case 0x00:
160 case 0xC0:
161 input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 8) - (int) (packet[3] & 7));
162 input_report_key(dev, BTN_SIDE, (packet[3] >> 4) & 1);
163 input_report_key(dev, BTN_EXTRA, (packet[3] >> 5) & 1);
164 break;
Pozsar Balazsb0c9ad82006-06-26 01:56:08 -0400165 }
Dmitry Torokhov0a88d602015-11-27 20:29:22 -0800166 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167
Dmitry Torokhov0a88d602015-11-27 20:29:22 -0800168 case PSMOUSE_GENPS:
169 /* Report scroll buttons on NetMice */
170 input_report_rel(dev, REL_WHEEL, -(signed char) packet[3]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171
Dmitry Torokhov0a88d602015-11-27 20:29:22 -0800172 /* Extra buttons on Genius NewNet 3D */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173 input_report_key(dev, BTN_SIDE, (packet[0] >> 6) & 1);
174 input_report_key(dev, BTN_EXTRA, (packet[0] >> 7) & 1);
Dmitry Torokhov0a88d602015-11-27 20:29:22 -0800175 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176
Dmitry Torokhov0a88d602015-11-27 20:29:22 -0800177 case PSMOUSE_THINKPS:
178 /* Extra button on ThinkingMouse */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179 input_report_key(dev, BTN_EXTRA, (packet[0] >> 3) & 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180
Dmitry Torokhov0a88d602015-11-27 20:29:22 -0800181 /*
182 * Without this bit of weirdness moving up gives wildly
183 * high Y changes.
184 */
185 packet[1] |= (packet[0] & 0x40) << 1;
186 break;
187
188 case PSMOUSE_CORTRON:
189 /*
190 * Cortron PS2 Trackball reports SIDE button in the
191 * 4th bit of the first byte.
192 */
Aristeu Rozanskiaea6a462007-05-10 01:47:18 -0400193 input_report_key(dev, BTN_SIDE, (packet[0] >> 3) & 1);
194 packet[0] |= 0x08;
Dmitry Torokhov0a88d602015-11-27 20:29:22 -0800195 break;
196
197 default:
198 break;
Aristeu Rozanskiaea6a462007-05-10 01:47:18 -0400199 }
200
Dmitry Torokhov0a88d602015-11-27 20:29:22 -0800201 /* Generic PS/2 Mouse */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202 input_report_key(dev, BTN_LEFT, packet[0] & 1);
203 input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1);
204 input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1);
205
206 input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0);
207 input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0);
208
209 input_sync(dev);
210
211 return PSMOUSE_FULL_PACKET;
212}
213
Andres Salomon8bf020e2008-09-16 12:30:33 -0400214void psmouse_queue_work(struct psmouse *psmouse, struct delayed_work *work,
215 unsigned long delay)
216{
217 queue_delayed_work(kpsmoused_wq, work, delay);
218}
219
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220/*
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -0500221 * __psmouse_set_state() sets new psmouse state and resets all flags.
222 */
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -0500223static inline void __psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state)
224{
225 psmouse->state = new_state;
Dmitry Torokhovb7802c52009-09-09 19:13:20 -0700226 psmouse->pktcnt = psmouse->out_of_sync_cnt = 0;
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -0500227 psmouse->ps2dev.flags = 0;
228 psmouse->last = jiffies;
229}
230
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -0500231/*
232 * psmouse_set_state() sets new psmouse state and resets all flags and
233 * counters while holding serio lock so fighting with interrupt handler
234 * is not a concern.
235 */
Andres Salomona48cf5f2008-09-16 12:30:33 -0400236void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state)
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -0500237{
238 serio_pause_rx(psmouse->ps2dev.serio);
239 __psmouse_set_state(psmouse, new_state);
240 serio_continue_rx(psmouse->ps2dev.serio);
241}
242
243/*
244 * psmouse_handle_byte() processes one byte of the input data stream
245 * by calling corresponding protocol handler.
246 */
David Howells7d12e782006-10-05 14:55:46 +0100247static int psmouse_handle_byte(struct psmouse *psmouse)
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -0500248{
David Howells7d12e782006-10-05 14:55:46 +0100249 psmouse_ret_t rc = psmouse->protocol_handler(psmouse);
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -0500250
251 switch (rc) {
Dmitry Torokhova62f0d22010-05-19 10:39:17 -0700252 case PSMOUSE_BAD_DATA:
253 if (psmouse->state == PSMOUSE_ACTIVATED) {
Dmitry Torokhovb5d21702011-10-10 18:27:03 -0700254 psmouse_warn(psmouse,
255 "%s at %s lost sync at byte %d\n",
256 psmouse->name, psmouse->phys,
257 psmouse->pktcnt);
Dmitry Torokhova62f0d22010-05-19 10:39:17 -0700258 if (++psmouse->out_of_sync_cnt == psmouse->resetafter) {
259 __psmouse_set_state(psmouse, PSMOUSE_IGNORE);
Dmitry Torokhovb5d21702011-10-10 18:27:03 -0700260 psmouse_notice(psmouse,
261 "issuing reconnect request\n");
Dmitry Torokhova62f0d22010-05-19 10:39:17 -0700262 serio_reconnect(psmouse->ps2dev.serio);
263 return -1;
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -0500264 }
Dmitry Torokhova62f0d22010-05-19 10:39:17 -0700265 }
266 psmouse->pktcnt = 0;
267 break;
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -0500268
Dmitry Torokhova62f0d22010-05-19 10:39:17 -0700269 case PSMOUSE_FULL_PACKET:
270 psmouse->pktcnt = 0;
271 if (psmouse->out_of_sync_cnt) {
272 psmouse->out_of_sync_cnt = 0;
Dmitry Torokhovb5d21702011-10-10 18:27:03 -0700273 psmouse_notice(psmouse,
274 "%s at %s - driver resynced.\n",
275 psmouse->name, psmouse->phys);
Dmitry Torokhova62f0d22010-05-19 10:39:17 -0700276 }
277 break;
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -0500278
Dmitry Torokhova62f0d22010-05-19 10:39:17 -0700279 case PSMOUSE_GOOD_DATA:
280 break;
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -0500281 }
282 return 0;
283}
284
285/*
286 * psmouse_interrupt() handles incoming characters, either passing them
287 * for normal processing or gathering them as command response.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289static irqreturn_t psmouse_interrupt(struct serio *serio,
David Howells7d12e782006-10-05 14:55:46 +0100290 unsigned char data, unsigned int flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291{
292 struct psmouse *psmouse = serio_get_drvdata(serio);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293
294 if (psmouse->state == PSMOUSE_IGNORE)
295 goto out;
296
Dmitry Torokhov6b9d363c2010-04-19 00:42:16 -0700297 if (unlikely((flags & SERIO_TIMEOUT) ||
298 ((flags & SERIO_PARITY) && !psmouse->ignore_parity))) {
299
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300 if (psmouse->state == PSMOUSE_ACTIVATED)
Dmitry Torokhovb5d21702011-10-10 18:27:03 -0700301 psmouse_warn(psmouse,
302 "bad data from KBC -%s%s\n",
303 flags & SERIO_TIMEOUT ? " timeout" : "",
304 flags & SERIO_PARITY ? " bad parity" : "");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305 ps2_cmd_aborted(&psmouse->ps2dev);
306 goto out;
307 }
308
309 if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_ACK))
310 if (ps2_handle_ack(&psmouse->ps2dev, data))
311 goto out;
312
313 if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_CMD))
314 if (ps2_handle_response(&psmouse->ps2dev, data))
315 goto out;
316
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -0500317 if (psmouse->state <= PSMOUSE_RESYNCING)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318 goto out;
319
320 if (psmouse->state == PSMOUSE_ACTIVATED &&
321 psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) {
Dmitry Torokhovb5d21702011-10-10 18:27:03 -0700322 psmouse_info(psmouse, "%s at %s lost synchronization, throwing %d bytes away.\n",
323 psmouse->name, psmouse->phys, psmouse->pktcnt);
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -0500324 psmouse->badbyte = psmouse->packet[0];
325 __psmouse_set_state(psmouse, PSMOUSE_RESYNCING);
Andres Salomon8bf020e2008-09-16 12:30:33 -0400326 psmouse_queue_work(psmouse, &psmouse->resync_work, 0);
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -0500327 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328 }
329
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330 psmouse->packet[psmouse->pktcnt++] = data;
Dmitry Torokhovad530772015-11-27 20:47:08 -0800331
332 /* Check if this is a new device announcement (0xAA 0x00) */
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -0500333 if (unlikely(psmouse->packet[0] == PSMOUSE_RET_BAT && psmouse->pktcnt <= 2)) {
Dmitry Torokhov89c9b482006-04-29 01:12:44 -0400334 if (psmouse->pktcnt == 1) {
335 psmouse->last = jiffies;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336 goto out;
Dmitry Torokhov89c9b482006-04-29 01:12:44 -0400337 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338
Zephaniah E. Hull535650f2009-05-14 22:02:33 -0700339 if (psmouse->packet[1] == PSMOUSE_RET_ID ||
340 (psmouse->type == PSMOUSE_HGPK &&
341 psmouse->packet[1] == PSMOUSE_RET_BAT)) {
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -0500342 __psmouse_set_state(psmouse, PSMOUSE_IGNORE);
343 serio_reconnect(serio);
344 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345 }
Dmitry Torokhovad530772015-11-27 20:47:08 -0800346
347 /* Not a new device, try processing first byte normally */
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -0500348 psmouse->pktcnt = 1;
David Howells7d12e782006-10-05 14:55:46 +0100349 if (psmouse_handle_byte(psmouse))
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -0500350 goto out;
351
352 psmouse->packet[psmouse->pktcnt++] = data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353 }
354
Dmitry Torokhovad530772015-11-27 20:47:08 -0800355 /*
356 * See if we need to force resync because mouse was idle for
357 * too long.
358 */
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -0500359 if (psmouse->state == PSMOUSE_ACTIVATED &&
360 psmouse->pktcnt == 1 && psmouse->resync_time &&
361 time_after(jiffies, psmouse->last + psmouse->resync_time * HZ)) {
362 psmouse->badbyte = psmouse->packet[0];
363 __psmouse_set_state(psmouse, PSMOUSE_RESYNCING);
Andres Salomon8bf020e2008-09-16 12:30:33 -0400364 psmouse_queue_work(psmouse, &psmouse->resync_work, 0);
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -0500365 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366 }
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -0500367
368 psmouse->last = jiffies;
David Howells7d12e782006-10-05 14:55:46 +0100369 psmouse_handle_byte(psmouse);
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -0500370
371 out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372 return IRQ_HANDLED;
373}
374
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375/*
376 * psmouse_sliced_command() sends an extended PS/2 command to the mouse
377 * using sliced syntax, understood by advanced devices, such as Logitech
378 * or Synaptics touchpads. The command is encoded as:
379 * 0xE6 0xE8 rr 0xE8 ss 0xE8 tt 0xE8 uu where (rr*64)+(ss*16)+(tt*4)+uu
380 * is the command.
381 */
382int psmouse_sliced_command(struct psmouse *psmouse, unsigned char command)
383{
384 int i;
385
386 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11))
387 return -1;
388
389 for (i = 6; i >= 0; i -= 2) {
390 unsigned char d = (command >> i) & 3;
391 if (ps2_command(&psmouse->ps2dev, &d, PSMOUSE_CMD_SETRES))
392 return -1;
393 }
394
395 return 0;
396}
397
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398/*
399 * psmouse_reset() resets the mouse into power-on state.
400 */
401int psmouse_reset(struct psmouse *psmouse)
402{
403 unsigned char param[2];
404
405 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_RESET_BAT))
406 return -1;
407
408 if (param[0] != PSMOUSE_RET_BAT && param[1] != PSMOUSE_RET_ID)
409 return -1;
410
411 return 0;
412}
413
Dmitry Torokhovee9dfd72011-12-30 15:16:45 -0800414/*
415 * Here we set the mouse resolution.
416 */
Dmitry Torokhovee9dfd72011-12-30 15:16:45 -0800417void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution)
418{
419 static const unsigned char params[] = { 0, 1, 2, 2, 3 };
420 unsigned char p;
421
422 if (resolution == 0 || resolution > 200)
423 resolution = 200;
424
425 p = params[resolution / 50];
426 ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES);
427 psmouse->resolution = 25 << p;
428}
429
430/*
431 * Here we set the mouse report rate.
432 */
Dmitry Torokhovee9dfd72011-12-30 15:16:45 -0800433static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate)
434{
435 static const unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 };
436 unsigned char r;
437 int i = 0;
438
439 while (rates[i] > rate) i++;
440 r = rates[i];
441 ps2_command(&psmouse->ps2dev, &r, PSMOUSE_CMD_SETRATE);
442 psmouse->rate = r;
443}
444
445/*
Mathias Gottschlag4ec212f2015-03-07 13:32:10 -0800446 * Here we set the mouse scaling.
447 */
Mathias Gottschlag4ec212f2015-03-07 13:32:10 -0800448static void psmouse_set_scale(struct psmouse *psmouse, enum psmouse_scale scale)
449{
450 ps2_command(&psmouse->ps2dev, NULL,
451 scale == PSMOUSE_SCALE21 ? PSMOUSE_CMD_SETSCALE21 :
452 PSMOUSE_CMD_SETSCALE11);
453}
454
455/*
Dmitry Torokhovee9dfd72011-12-30 15:16:45 -0800456 * psmouse_poll() - default poll handler. Everyone except for ALPS uses it.
457 */
Dmitry Torokhovee9dfd72011-12-30 15:16:45 -0800458static int psmouse_poll(struct psmouse *psmouse)
459{
460 return ps2_command(&psmouse->ps2dev, psmouse->packet,
461 PSMOUSE_CMD_POLL | (psmouse->pktsize << 8));
462}
463
Dmitry Torokhov99e14c12015-02-27 16:17:59 -0800464static bool psmouse_check_pnp_id(const char *id, const char * const ids[])
465{
466 int i;
467
468 for (i = 0; ids[i]; i++)
469 if (!strcasecmp(id, ids[i]))
470 return true;
471
472 return false;
473}
474
Hans de Goede2c75ada2014-09-11 10:14:09 -0700475/*
476 * psmouse_matches_pnp_id - check if psmouse matches one of the passed in ids.
477 */
478bool psmouse_matches_pnp_id(struct psmouse *psmouse, const char * const ids[])
479{
Dmitry Torokhov99e14c12015-02-27 16:17:59 -0800480 struct serio *serio = psmouse->ps2dev.serio;
481 char *p, *fw_id_copy, *save_ptr;
482 bool found = false;
Hans de Goede2c75ada2014-09-11 10:14:09 -0700483
Dmitry Torokhov99e14c12015-02-27 16:17:59 -0800484 if (strncmp(serio->firmware_id, "PNP: ", 5))
485 return false;
Hans de Goede2c75ada2014-09-11 10:14:09 -0700486
Dmitry Torokhov99e14c12015-02-27 16:17:59 -0800487 fw_id_copy = kstrndup(&serio->firmware_id[5],
488 sizeof(serio->firmware_id) - 5,
489 GFP_KERNEL);
490 if (!fw_id_copy)
491 return false;
492
493 save_ptr = fw_id_copy;
494 while ((p = strsep(&fw_id_copy, " ")) != NULL) {
495 if (psmouse_check_pnp_id(p, ids)) {
496 found = true;
497 break;
498 }
499 }
500
501 kfree(save_ptr);
502 return found;
Hans de Goede2c75ada2014-09-11 10:14:09 -0700503}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504
505/*
506 * Genius NetMouse magic init.
507 */
Dmitry Torokhovb7802c52009-09-09 19:13:20 -0700508static int genius_detect(struct psmouse *psmouse, bool set_properties)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509{
510 struct ps2dev *ps2dev = &psmouse->ps2dev;
511 unsigned char param[4];
512
513 param[0] = 3;
514 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
515 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
516 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
517 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
518 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
519
520 if (param[0] != 0x00 || param[1] != 0x33 || param[2] != 0x55)
521 return -1;
522
523 if (set_properties) {
Dmitry Torokhov315eb992009-11-16 22:12:21 -0800524 __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
Dmitry Torokhovb7802c52009-09-09 19:13:20 -0700525 __set_bit(BTN_EXTRA, psmouse->dev->keybit);
526 __set_bit(BTN_SIDE, psmouse->dev->keybit);
527 __set_bit(REL_WHEEL, psmouse->dev->relbit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528
529 psmouse->vendor = "Genius";
Dmitry Torokhova3f3f312006-01-29 21:50:46 -0500530 psmouse->name = "Mouse";
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531 psmouse->pktsize = 4;
532 }
533
534 return 0;
535}
536
537/*
538 * IntelliMouse magic init.
539 */
Dmitry Torokhovb7802c52009-09-09 19:13:20 -0700540static int intellimouse_detect(struct psmouse *psmouse, bool set_properties)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541{
542 struct ps2dev *ps2dev = &psmouse->ps2dev;
543 unsigned char param[2];
544
545 param[0] = 200;
546 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
547 param[0] = 100;
548 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
549 param[0] = 80;
550 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
551 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
552
553 if (param[0] != 3)
554 return -1;
555
556 if (set_properties) {
Dmitry Torokhovb7802c52009-09-09 19:13:20 -0700557 __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
558 __set_bit(REL_WHEEL, psmouse->dev->relbit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559
Dmitry Torokhov315eb992009-11-16 22:12:21 -0800560 if (!psmouse->vendor)
561 psmouse->vendor = "Generic";
562 if (!psmouse->name)
563 psmouse->name = "Wheel Mouse";
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564 psmouse->pktsize = 4;
565 }
566
567 return 0;
568}
569
570/*
571 * Try IntelliMouse/Explorer magic init.
572 */
Dmitry Torokhovb7802c52009-09-09 19:13:20 -0700573static int im_explorer_detect(struct psmouse *psmouse, bool set_properties)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574{
575 struct ps2dev *ps2dev = &psmouse->ps2dev;
576 unsigned char param[2];
577
578 intellimouse_detect(psmouse, 0);
579
580 param[0] = 200;
581 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
582 param[0] = 200;
583 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
584 param[0] = 80;
585 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
586 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
587
588 if (param[0] != 4)
589 return -1;
590
Dmitry Torokhovad530772015-11-27 20:47:08 -0800591 /* Magic to enable horizontal scrolling on IntelliMouse 4.0 */
Pozsar Balazsb0c9ad82006-06-26 01:56:08 -0400592 param[0] = 200;
593 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
594 param[0] = 80;
595 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
596 param[0] = 40;
597 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
598
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599 if (set_properties) {
Dmitry Torokhovb7802c52009-09-09 19:13:20 -0700600 __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
601 __set_bit(REL_WHEEL, psmouse->dev->relbit);
602 __set_bit(REL_HWHEEL, psmouse->dev->relbit);
603 __set_bit(BTN_SIDE, psmouse->dev->keybit);
604 __set_bit(BTN_EXTRA, psmouse->dev->keybit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605
Dmitry Torokhov315eb992009-11-16 22:12:21 -0800606 if (!psmouse->vendor)
607 psmouse->vendor = "Generic";
608 if (!psmouse->name)
609 psmouse->name = "Explorer Mouse";
Linus Torvalds1da177e2005-04-16 15:20:36 -0700610 psmouse->pktsize = 4;
611 }
612
613 return 0;
614}
615
616/*
617 * Kensington ThinkingMouse / ExpertMouse magic init.
618 */
Dmitry Torokhovb7802c52009-09-09 19:13:20 -0700619static int thinking_detect(struct psmouse *psmouse, bool set_properties)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620{
621 struct ps2dev *ps2dev = &psmouse->ps2dev;
622 unsigned char param[2];
Helge Dellere38de672006-09-10 21:54:39 -0400623 static const unsigned char seq[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20 };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624 int i;
625
626 param[0] = 10;
627 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
628 param[0] = 0;
629 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
Helge Dellere38de672006-09-10 21:54:39 -0400630 for (i = 0; i < ARRAY_SIZE(seq); i++) {
631 param[0] = seq[i];
632 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
633 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
635
636 if (param[0] != 2)
637 return -1;
638
639 if (set_properties) {
Dmitry Torokhov315eb992009-11-16 22:12:21 -0800640 __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
Dmitry Torokhovb7802c52009-09-09 19:13:20 -0700641 __set_bit(BTN_EXTRA, psmouse->dev->keybit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700642
643 psmouse->vendor = "Kensington";
644 psmouse->name = "ThinkingMouse";
645 }
646
647 return 0;
648}
649
650/*
651 * Bare PS/2 protocol "detection". Always succeeds.
652 */
Dmitry Torokhovb7802c52009-09-09 19:13:20 -0700653static int ps2bare_detect(struct psmouse *psmouse, bool set_properties)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700654{
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -0500655 if (set_properties) {
Dmitry Torokhov315eb992009-11-16 22:12:21 -0800656 if (!psmouse->vendor)
657 psmouse->vendor = "Generic";
658 if (!psmouse->name)
659 psmouse->name = "Mouse";
660
Dmitry Torokhovad530772015-11-27 20:47:08 -0800661 /*
662 * We have no way of figuring true number of buttons so let's
663 * assume that the device has 3.
664 */
Dmitry Torokhov315eb992009-11-16 22:12:21 -0800665 __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -0500666 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700667
668 return 0;
669}
670
Aristeu Rozanskiaea6a462007-05-10 01:47:18 -0400671/*
672 * Cortron PS/2 protocol detection. There's no special way to detect it, so it
673 * must be forced by sysfs protocol writing.
674 */
Dmitry Torokhovb7802c52009-09-09 19:13:20 -0700675static int cortron_detect(struct psmouse *psmouse, bool set_properties)
Aristeu Rozanskiaea6a462007-05-10 01:47:18 -0400676{
677 if (set_properties) {
678 psmouse->vendor = "Cortron";
679 psmouse->name = "PS/2 Trackball";
Dmitry Torokhov315eb992009-11-16 22:12:21 -0800680
681 __set_bit(BTN_MIDDLE, psmouse->dev->keybit);
Dmitry Torokhovb7802c52009-09-09 19:13:20 -0700682 __set_bit(BTN_SIDE, psmouse->dev->keybit);
Aristeu Rozanskiaea6a462007-05-10 01:47:18 -0400683 }
684
685 return 0;
686}
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -0500687
Dmitry Torokhov5fa75cf2015-11-27 21:08:28 -0800688static const struct psmouse_protocol psmouse_protocols[] = {
689 {
690 .type = PSMOUSE_PS2,
691 .name = "PS/2",
692 .alias = "bare",
693 .maxproto = true,
694 .ignore_parity = true,
695 .detect = ps2bare_detect,
Dmitry Torokhovec6184b2015-11-24 12:58:46 -0800696 .try_passthru = true,
Dmitry Torokhov5fa75cf2015-11-27 21:08:28 -0800697 },
698#ifdef CONFIG_MOUSE_PS2_LOGIPS2PP
699 {
700 .type = PSMOUSE_PS2PP,
701 .name = "PS2++",
702 .alias = "logitech",
Dmitry Torokhov190e2032015-12-02 11:02:39 -0800703 .detect = ps2pp_detect,
Dmitry Torokhov5fa75cf2015-11-27 21:08:28 -0800704 },
705#endif
706 {
707 .type = PSMOUSE_THINKPS,
708 .name = "ThinkPS/2",
709 .alias = "thinkps",
710 .detect = thinking_detect,
711 },
712#ifdef CONFIG_MOUSE_PS2_CYPRESS
713 {
714 .type = PSMOUSE_CYPRESS,
715 .name = "CyPS/2",
716 .alias = "cypress",
717 .detect = cypress_detect,
718 .init = cypress_init,
719 },
720#endif
721 {
722 .type = PSMOUSE_GENPS,
723 .name = "GenPS/2",
724 .alias = "genius",
725 .detect = genius_detect,
726 },
727 {
728 .type = PSMOUSE_IMPS,
729 .name = "ImPS/2",
730 .alias = "imps",
731 .maxproto = true,
732 .ignore_parity = true,
733 .detect = intellimouse_detect,
Dmitry Torokhovec6184b2015-11-24 12:58:46 -0800734 .try_passthru = true,
Dmitry Torokhov5fa75cf2015-11-27 21:08:28 -0800735 },
736 {
737 .type = PSMOUSE_IMEX,
738 .name = "ImExPS/2",
739 .alias = "exps",
740 .maxproto = true,
741 .ignore_parity = true,
742 .detect = im_explorer_detect,
Dmitry Torokhovec6184b2015-11-24 12:58:46 -0800743 .try_passthru = true,
Dmitry Torokhov5fa75cf2015-11-27 21:08:28 -0800744 },
745#ifdef CONFIG_MOUSE_PS2_SYNAPTICS
746 {
747 .type = PSMOUSE_SYNAPTICS,
748 .name = "SynPS/2",
749 .alias = "synaptics",
750 .detect = synaptics_detect,
751 .init = synaptics_init,
752 },
753 {
754 .type = PSMOUSE_SYNAPTICS_RELATIVE,
755 .name = "SynRelPS/2",
756 .alias = "synaptics-relative",
757 .detect = synaptics_detect,
758 .init = synaptics_init_relative,
759 },
760#endif
761#ifdef CONFIG_MOUSE_PS2_ALPS
762 {
763 .type = PSMOUSE_ALPS,
764 .name = "AlpsPS/2",
765 .alias = "alps",
766 .detect = alps_detect,
767 .init = alps_init,
768 },
769#endif
770#ifdef CONFIG_MOUSE_PS2_LIFEBOOK
771 {
772 .type = PSMOUSE_LIFEBOOK,
773 .name = "LBPS/2",
774 .alias = "lifebook",
Dmitry Torokhovc378b512015-11-27 21:17:40 -0800775 .detect = lifebook_detect,
Dmitry Torokhov5fa75cf2015-11-27 21:08:28 -0800776 .init = lifebook_init,
777 },
778#endif
779#ifdef CONFIG_MOUSE_PS2_TRACKPOINT
780 {
781 .type = PSMOUSE_TRACKPOINT,
782 .name = "TPPS/2",
783 .alias = "trackpoint",
784 .detect = trackpoint_detect,
Dmitry Torokhovec6184b2015-11-24 12:58:46 -0800785 .try_passthru = true,
Dmitry Torokhov5fa75cf2015-11-27 21:08:28 -0800786 },
787#endif
788#ifdef CONFIG_MOUSE_PS2_TOUCHKIT
789 {
790 .type = PSMOUSE_TOUCHKIT_PS2,
791 .name = "touchkitPS/2",
792 .alias = "touchkit",
793 .detect = touchkit_ps2_detect,
794 },
795#endif
796#ifdef CONFIG_MOUSE_PS2_OLPC
797 {
798 .type = PSMOUSE_HGPK,
799 .name = "OLPC HGPK",
800 .alias = "hgpk",
801 .detect = hgpk_detect,
802 },
803#endif
804#ifdef CONFIG_MOUSE_PS2_ELANTECH
805 {
806 .type = PSMOUSE_ELANTECH,
807 .name = "ETPS/2",
808 .alias = "elantech",
809 .detect = elantech_detect,
810 .init = elantech_init,
811 },
812#endif
813#ifdef CONFIG_MOUSE_PS2_SENTELIC
814 {
815 .type = PSMOUSE_FSP,
816 .name = "FSPPS/2",
817 .alias = "fsp",
818 .detect = fsp_detect,
819 .init = fsp_init,
820 },
821#endif
822 {
823 .type = PSMOUSE_CORTRON,
824 .name = "CortronPS/2",
825 .alias = "cortps",
826 .detect = cortron_detect,
827 },
828#ifdef CONFIG_MOUSE_PS2_FOCALTECH
829 {
830 .type = PSMOUSE_FOCALTECH,
831 .name = "FocalTechPS/2",
832 .alias = "focaltech",
833 .detect = focaltech_detect,
834 .init = focaltech_init,
835 },
836#endif
837#ifdef CONFIG_MOUSE_PS2_VMMOUSE
838 {
839 .type = PSMOUSE_VMMOUSE,
840 .name = VMMOUSE_PSNAME,
841 .alias = "vmmouse",
842 .detect = vmmouse_detect,
843 .init = vmmouse_init,
844 },
845#endif
Chris Diamand98ee3772016-01-27 17:04:35 -0800846#ifdef CONFIG_MOUSE_PS2_BYD
847 {
848 .type = PSMOUSE_BYD,
Richard Pospesel2d5f5612016-03-14 09:41:16 -0700849 .name = "BYDPS/2",
Chris Diamand98ee3772016-01-27 17:04:35 -0800850 .alias = "byd",
851 .detect = byd_detect,
852 .init = byd_init,
853 },
854#endif
Dmitry Torokhov5fa75cf2015-11-27 21:08:28 -0800855 {
856 .type = PSMOUSE_AUTO,
857 .name = "auto",
858 .alias = "any",
859 .maxproto = true,
860 },
861};
862
Dmitry Torokhovc378b512015-11-27 21:17:40 -0800863static const struct psmouse_protocol *__psmouse_protocol_by_type(enum psmouse_type type)
Dmitry Torokhov5fa75cf2015-11-27 21:08:28 -0800864{
865 int i;
866
867 for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++)
868 if (psmouse_protocols[i].type == type)
869 return &psmouse_protocols[i];
870
Dmitry Torokhovc378b512015-11-27 21:17:40 -0800871 return NULL;
872}
873
874static const struct psmouse_protocol *psmouse_protocol_by_type(enum psmouse_type type)
875{
876 const struct psmouse_protocol *proto;
877
878 proto = __psmouse_protocol_by_type(type);
879 if (proto)
880 return proto;
881
Dmitry Torokhov5fa75cf2015-11-27 21:08:28 -0800882 WARN_ON(1);
883 return &psmouse_protocols[0];
884}
885
886static const struct psmouse_protocol *psmouse_protocol_by_name(const char *name, size_t len)
887{
888 const struct psmouse_protocol *p;
889 int i;
890
891 for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++) {
892 p = &psmouse_protocols[i];
893
894 if ((strlen(p->name) == len && !strncmp(p->name, name, len)) ||
895 (strlen(p->alias) == len && !strncmp(p->alias, name, len)))
896 return &psmouse_protocols[i];
897 }
898
899 return NULL;
900}
901
Linus Torvalds1da177e2005-04-16 15:20:36 -0700902/*
Dmitry Torokhovee9dfd72011-12-30 15:16:45 -0800903 * Apply default settings to the psmouse structure. Most of them will
904 * be overridden by individual protocol initialization routines.
905 */
Dmitry Torokhovee9dfd72011-12-30 15:16:45 -0800906static void psmouse_apply_defaults(struct psmouse *psmouse)
907{
908 struct input_dev *input_dev = psmouse->dev;
909
910 memset(input_dev->evbit, 0, sizeof(input_dev->evbit));
911 memset(input_dev->keybit, 0, sizeof(input_dev->keybit));
912 memset(input_dev->relbit, 0, sizeof(input_dev->relbit));
913 memset(input_dev->absbit, 0, sizeof(input_dev->absbit));
914 memset(input_dev->mscbit, 0, sizeof(input_dev->mscbit));
915
916 __set_bit(EV_KEY, input_dev->evbit);
917 __set_bit(EV_REL, input_dev->evbit);
918
919 __set_bit(BTN_LEFT, input_dev->keybit);
920 __set_bit(BTN_RIGHT, input_dev->keybit);
921
922 __set_bit(REL_X, input_dev->relbit);
923 __set_bit(REL_Y, input_dev->relbit);
924
Hans de Goede01d4cd52014-09-08 14:44:05 -0700925 __set_bit(INPUT_PROP_POINTER, input_dev->propbit);
926
Dmitry Torokhovee9dfd72011-12-30 15:16:45 -0800927 psmouse->set_rate = psmouse_set_rate;
928 psmouse->set_resolution = psmouse_set_resolution;
Mathias Gottschlag4ec212f2015-03-07 13:32:10 -0800929 psmouse->set_scale = psmouse_set_scale;
Dmitry Torokhovee9dfd72011-12-30 15:16:45 -0800930 psmouse->poll = psmouse_poll;
931 psmouse->protocol_handler = psmouse_process_byte;
932 psmouse->pktsize = 3;
933 psmouse->reconnect = NULL;
934 psmouse->disconnect = NULL;
935 psmouse->cleanup = NULL;
936 psmouse->pt_activate = NULL;
937 psmouse->pt_deactivate = NULL;
938}
939
Dmitry Torokhovc378b512015-11-27 21:17:40 -0800940static bool psmouse_try_protocol(struct psmouse *psmouse,
941 enum psmouse_type type,
942 unsigned int *max_proto,
943 bool set_properties, bool init_allowed)
Dmitry Torokhovee9dfd72011-12-30 15:16:45 -0800944{
Dmitry Torokhovc378b512015-11-27 21:17:40 -0800945 const struct psmouse_protocol *proto;
946
947 proto = __psmouse_protocol_by_type(type);
948 if (!proto)
949 return false;
950
Dmitry Torokhovec6184b2015-11-24 12:58:46 -0800951 if (psmouse->ps2dev.serio->id.type == SERIO_PS_PSTHRU &&
952 !proto->try_passthru) {
953 return false;
954 }
955
Dmitry Torokhovee9dfd72011-12-30 15:16:45 -0800956 if (set_properties)
957 psmouse_apply_defaults(psmouse);
958
Dmitry Torokhovc378b512015-11-27 21:17:40 -0800959 if (proto->detect(psmouse, set_properties) != 0)
960 return false;
961
962 if (set_properties && proto->init && init_allowed) {
963 if (proto->init(psmouse) != 0) {
964 /*
965 * We detected device, but init failed. Adjust
966 * max_proto so we only try standard protocols.
967 */
968 if (*max_proto > PSMOUSE_IMEX)
969 *max_proto = PSMOUSE_IMEX;
970
971 return false;
972 }
973 }
974
975 return true;
Dmitry Torokhovee9dfd72011-12-30 15:16:45 -0800976}
977
978/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700979 * psmouse_extensions() probes for any extensions to the basic PS/2 protocol
980 * the mouse may have.
981 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700982static int psmouse_extensions(struct psmouse *psmouse,
Dmitry Torokhovb7802c52009-09-09 19:13:20 -0700983 unsigned int max_proto, bool set_properties)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700984{
Jiri Kosina06989892009-11-16 22:12:13 -0800985 bool synaptics_hardware = false;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700986
Dmitry Torokhovad530772015-11-27 20:47:08 -0800987 /*
988 * Always check for focaltech, this is safe as it uses pnp-id
989 * matching.
990 */
Dmitry Torokhovc378b512015-11-27 21:17:40 -0800991 if (psmouse_try_protocol(psmouse, PSMOUSE_FOCALTECH,
992 &max_proto, set_properties, false)) {
993 if (max_proto > PSMOUSE_IMEX &&
994 IS_ENABLED(CONFIG_MOUSE_PS2_FOCALTECH) &&
995 (!set_properties || focaltech_init(psmouse) == 0)) {
996 return PSMOUSE_FOCALTECH;
Hans de Goede3ace3682014-09-12 17:24:47 -0700997 }
Dmitry Torokhov2b6f39e2015-11-27 20:52:36 -0800998 /*
999 * Restrict psmouse_max_proto so that psmouse_initialize()
1000 * does not try to reset rate and resolution, because even
1001 * that upsets the device.
1002 * This also causes us to basically fall through to basic
1003 * protocol detection, where we fully reset the mouse,
1004 * and set it up as bare PS/2 protocol device.
1005 */
1006 psmouse_max_proto = max_proto = PSMOUSE_PS2;
Hans de Goede3ace3682014-09-12 17:24:47 -07001007 }
1008
Dmitry Torokhovad530772015-11-27 20:47:08 -08001009 /*
1010 * We always check for LifeBook because it does not disturb mouse
1011 * (it only checks DMI information).
1012 */
Dmitry Torokhovc378b512015-11-27 21:17:40 -08001013 if (psmouse_try_protocol(psmouse, PSMOUSE_LIFEBOOK, &max_proto,
1014 set_properties, max_proto > PSMOUSE_IMEX))
1015 return PSMOUSE_LIFEBOOK;
Kenan Esau02d7f582005-05-29 02:30:22 -05001016
Dmitry Torokhovc378b512015-11-27 21:17:40 -08001017 if (psmouse_try_protocol(psmouse, PSMOUSE_VMMOUSE, &max_proto,
1018 set_properties, max_proto > PSMOUSE_IMEX))
1019 return PSMOUSE_VMMOUSE;
Thomas Hellstrom8b8be512015-04-14 10:06:38 -07001020
Dmitry Torokhovad530772015-11-27 20:47:08 -08001021 /*
1022 * Try Kensington ThinkingMouse (we try first, because Synaptics
1023 * probe upsets the ThinkingMouse).
1024 */
Dmitry Torokhovee9dfd72011-12-30 15:16:45 -08001025 if (max_proto > PSMOUSE_IMEX &&
Dmitry Torokhovc378b512015-11-27 21:17:40 -08001026 psmouse_try_protocol(psmouse, PSMOUSE_THINKPS, &max_proto,
1027 set_properties, true)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001028 return PSMOUSE_THINKPS;
Dmitry Torokhovee9dfd72011-12-30 15:16:45 -08001029 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001030
Dmitry Torokhovad530772015-11-27 20:47:08 -08001031 /*
1032 * Try Synaptics TouchPad. Note that probing is done even if
1033 * Synaptics protocol support is disabled in config - we need to
1034 * know if it is Synaptics so we can reset it properly after
1035 * probing for IntelliMouse.
1036 */
Dmitry Torokhovee9dfd72011-12-30 15:16:45 -08001037 if (max_proto > PSMOUSE_PS2 &&
Dmitry Torokhovc378b512015-11-27 21:17:40 -08001038 psmouse_try_protocol(psmouse, PSMOUSE_SYNAPTICS, &max_proto,
1039 set_properties, false)) {
Dmitry Torokhovb7802c52009-09-09 19:13:20 -07001040 synaptics_hardware = true;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001041
1042 if (max_proto > PSMOUSE_IMEX) {
Dmitry Torokhovad530772015-11-27 20:47:08 -08001043 /*
1044 * Try activating protocol, but check if support is
1045 * enabled first, since we try detecting Synaptics
1046 * even when protocol is disabled.
1047 */
Dmitry Torokhov290b7992014-12-29 12:06:38 -08001048 if (IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS) &&
Daniel Drakee4e6efd2010-01-07 01:52:39 -08001049 (!set_properties || synaptics_init(psmouse) == 0)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001050 return PSMOUSE_SYNAPTICS;
Daniel Drakee4e6efd2010-01-07 01:52:39 -08001051 }
1052
Dmitry Torokhovad530772015-11-27 20:47:08 -08001053 /*
1054 * Some Synaptics touchpads can emulate extended
1055 * protocols (like IMPS/2). Unfortunately
1056 * Logitech/Genius probes confuse some firmware
1057 * versions so we'll have to skip them.
1058 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001059 max_proto = PSMOUSE_IMEX;
1060 }
Dmitry Torokhovad530772015-11-27 20:47:08 -08001061
1062 /*
1063 * Make sure that touchpad is in relative mode, gestures
1064 * (taps) are enabled.
1065 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001066 synaptics_reset(psmouse);
1067 }
1068
Dmitry Torokhovad530772015-11-27 20:47:08 -08001069 /*
1070 * Try Cypress Trackpad. We must try it before Finger Sensing Pad
1071 * because Finger Sensing Pad probe upsets some modules of Cypress
1072 * Trackpads.
1073 */
Dudley Du0799a922013-01-05 00:14:22 -08001074 if (max_proto > PSMOUSE_IMEX &&
Dmitry Torokhovc378b512015-11-27 21:17:40 -08001075 psmouse_try_protocol(psmouse, PSMOUSE_CYPRESS, &max_proto,
1076 set_properties, true)) {
1077 return PSMOUSE_CYPRESS;
Dudley Du0799a922013-01-05 00:14:22 -08001078 }
1079
Dmitry Torokhovad530772015-11-27 20:47:08 -08001080 /* Try ALPS TouchPad */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001081 if (max_proto > PSMOUSE_IMEX) {
1082 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
Dmitry Torokhovc378b512015-11-27 21:17:40 -08001083 if (psmouse_try_protocol(psmouse, PSMOUSE_ALPS,
1084 &max_proto, set_properties, true))
1085 return PSMOUSE_ALPS;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001086 }
1087
Dmitry Torokhovad530772015-11-27 20:47:08 -08001088 /* Try OLPC HGPK touchpad */
Andres Salomondf08ef22008-09-16 12:30:34 -04001089 if (max_proto > PSMOUSE_IMEX &&
Dmitry Torokhovc378b512015-11-27 21:17:40 -08001090 psmouse_try_protocol(psmouse, PSMOUSE_HGPK, &max_proto,
1091 set_properties, true)) {
1092 return PSMOUSE_HGPK;
Andres Salomondf08ef22008-09-16 12:30:34 -04001093 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001094
Dmitry Torokhovad530772015-11-27 20:47:08 -08001095 /* Try Elantech touchpad */
Arjan Opmeer2a0bd752008-10-16 22:10:19 -04001096 if (max_proto > PSMOUSE_IMEX &&
Dmitry Torokhovc378b512015-11-27 21:17:40 -08001097 psmouse_try_protocol(psmouse, PSMOUSE_ELANTECH,
1098 &max_proto, set_properties, true)) {
1099 return PSMOUSE_ELANTECH;
Arjan Opmeer2a0bd752008-10-16 22:10:19 -04001100 }
1101
Andres Salomondf08ef22008-09-16 12:30:34 -04001102 if (max_proto > PSMOUSE_IMEX) {
Dmitry Torokhovc378b512015-11-27 21:17:40 -08001103 if (psmouse_try_protocol(psmouse, PSMOUSE_GENPS,
1104 &max_proto, set_properties, true))
Stefan Lucke24bf10a2007-02-18 01:49:10 -05001105 return PSMOUSE_GENPS;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001106
Dmitry Torokhovc378b512015-11-27 21:17:40 -08001107 if (psmouse_try_protocol(psmouse, PSMOUSE_PS2PP,
1108 &max_proto, set_properties, true))
Stefan Lucke24bf10a2007-02-18 01:49:10 -05001109 return PSMOUSE_PS2PP;
1110
Dmitry Torokhovc378b512015-11-27 21:17:40 -08001111 if (psmouse_try_protocol(psmouse, PSMOUSE_TRACKPOINT,
1112 &max_proto, set_properties, true))
Stefan Lucke24bf10a2007-02-18 01:49:10 -05001113 return PSMOUSE_TRACKPOINT;
1114
Dmitry Torokhovc378b512015-11-27 21:17:40 -08001115 if (psmouse_try_protocol(psmouse, PSMOUSE_TOUCHKIT_PS2,
1116 &max_proto, set_properties, true))
Stefan Lucke24bf10a2007-02-18 01:49:10 -05001117 return PSMOUSE_TOUCHKIT_PS2;
Chris Diamand98ee3772016-01-27 17:04:35 -08001118
1119 if (psmouse_try_protocol(psmouse, PSMOUSE_BYD,
1120 &max_proto, set_properties, true))
1121 return PSMOUSE_BYD;
Stefan Lucke24bf10a2007-02-18 01:49:10 -05001122 }
Dmitry Torokhovba449952005-12-21 00:51:31 -05001123
Dmitry Torokhovad530772015-11-27 20:47:08 -08001124 /*
1125 * Try Finger Sensing Pad. We do it here because its probe upsets
1126 * Trackpoint devices (causing TP_READ_ID command to time out).
1127 */
Dmitry Torokhovc378b512015-11-27 21:17:40 -08001128 if (max_proto > PSMOUSE_IMEX &&
1129 psmouse_try_protocol(psmouse, PSMOUSE_FSP,
1130 &max_proto, set_properties, true)) {
1131 return PSMOUSE_FSP;
Tai-hwa Liang4a18b3a2010-01-13 00:16:27 -08001132 }
1133
Dmitry Torokhovad530772015-11-27 20:47:08 -08001134 /*
1135 * Reset to defaults in case the device got confused by extended
1136 * protocol probes. Note that we follow up with full reset because
1137 * some mice put themselves to sleep when they see PSMOUSE_RESET_DIS.
1138 */
Alon Ziv554fc192007-08-30 00:22:48 -04001139 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
Dmitry Torokhovba449952005-12-21 00:51:31 -05001140 psmouse_reset(psmouse);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001141
Dmitry Torokhovee9dfd72011-12-30 15:16:45 -08001142 if (max_proto >= PSMOUSE_IMEX &&
Dmitry Torokhovc378b512015-11-27 21:17:40 -08001143 psmouse_try_protocol(psmouse, PSMOUSE_IMEX,
1144 &max_proto, set_properties, true)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001145 return PSMOUSE_IMEX;
Dmitry Torokhovee9dfd72011-12-30 15:16:45 -08001146 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001147
Dmitry Torokhovee9dfd72011-12-30 15:16:45 -08001148 if (max_proto >= PSMOUSE_IMPS &&
Dmitry Torokhovc378b512015-11-27 21:17:40 -08001149 psmouse_try_protocol(psmouse, PSMOUSE_IMPS,
1150 &max_proto, set_properties, true)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001151 return PSMOUSE_IMPS;
Dmitry Torokhovee9dfd72011-12-30 15:16:45 -08001152 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001153
Dmitry Torokhovad530772015-11-27 20:47:08 -08001154 /*
1155 * Okay, all failed, we have a standard mouse here. The number of
1156 * the buttons is still a question, though. We assume 3.
1157 */
Dmitry Torokhovc378b512015-11-27 21:17:40 -08001158 psmouse_try_protocol(psmouse, PSMOUSE_PS2,
1159 &max_proto, set_properties, true);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001160
1161 if (synaptics_hardware) {
Dmitry Torokhovad530772015-11-27 20:47:08 -08001162 /*
1163 * We detected Synaptics hardware but it did not respond to
1164 * IMPS/2 probes. We need to reset the touchpad because if
1165 * there is a track point on the pass through port it could
1166 * get disabled while probing for protocol extensions.
1167 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001168 psmouse_reset(psmouse);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001169 }
1170
1171 return PSMOUSE_PS2;
1172}
1173
1174/*
1175 * psmouse_probe() probes for a PS/2 mouse.
1176 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001177static int psmouse_probe(struct psmouse *psmouse)
1178{
1179 struct ps2dev *ps2dev = &psmouse->ps2dev;
1180 unsigned char param[2];
1181
Dmitry Torokhovad530772015-11-27 20:47:08 -08001182 /*
1183 * First, we check if it's a mouse. It should send 0x00 or 0x03 in
1184 * case of an IntelliMouse in 4-byte mode or 0x04 for IM Explorer.
1185 * Sunrex K8561 IR Keyboard/Mouse reports 0xff on second and
1186 * subsequent ID queries, probably due to a firmware bug.
1187 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001188 param[0] = 0xa5;
1189 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETID))
1190 return -1;
1191
Vojtech Pavlik7741e932005-05-28 02:11:42 -05001192 if (param[0] != 0x00 && param[0] != 0x03 &&
1193 param[0] != 0x04 && param[0] != 0xff)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001194 return -1;
1195
Dmitry Torokhovad530772015-11-27 20:47:08 -08001196 /*
1197 * Then we reset and disable the mouse so that it doesn't generate
1198 * events.
1199 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001200 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_DIS))
Dmitry Torokhovb5d21702011-10-10 18:27:03 -07001201 psmouse_warn(psmouse, "Failed to reset mouse on %s\n",
1202 ps2dev->serio->phys);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001203
1204 return 0;
1205}
1206
1207/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001208 * psmouse_initialize() initializes the mouse to a sane state.
1209 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001210static void psmouse_initialize(struct psmouse *psmouse)
1211{
Dmitry Torokhovad530772015-11-27 20:47:08 -08001212 /*
1213 * We set the mouse report rate, resolution and scaling.
1214 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001215 if (psmouse_max_proto != PSMOUSE_PS2) {
1216 psmouse->set_rate(psmouse, psmouse->rate);
1217 psmouse->set_resolution(psmouse, psmouse->resolution);
Mathias Gottschlag4ec212f2015-03-07 13:32:10 -08001218 psmouse->set_scale(psmouse, PSMOUSE_SCALE11);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001219 }
1220}
1221
1222/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001223 * psmouse_activate() enables the mouse so that we get motion reports from it.
1224 */
Andres Salomonbd26f3d2012-02-24 00:51:37 -08001225int psmouse_activate(struct psmouse *psmouse)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001226{
Andres Salomonbd26f3d2012-02-24 00:51:37 -08001227 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
Dmitry Torokhovb5d21702011-10-10 18:27:03 -07001228 psmouse_warn(psmouse, "Failed to enable mouse on %s\n",
1229 psmouse->ps2dev.serio->phys);
Andres Salomonbd26f3d2012-02-24 00:51:37 -08001230 return -1;
1231 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001232
1233 psmouse_set_state(psmouse, PSMOUSE_ACTIVATED);
Andres Salomonbd26f3d2012-02-24 00:51:37 -08001234 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001235}
1236
Linus Torvalds1da177e2005-04-16 15:20:36 -07001237/*
Dmitry Torokhovad530772015-11-27 20:47:08 -08001238 * psmouse_deactivate() puts the mouse into poll mode so that we don't get
1239 * motion reports from it unless we explicitly request it.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001240 */
Andres Salomonbd26f3d2012-02-24 00:51:37 -08001241int psmouse_deactivate(struct psmouse *psmouse)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001242{
Andres Salomonbd26f3d2012-02-24 00:51:37 -08001243 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE)) {
Dmitry Torokhovb5d21702011-10-10 18:27:03 -07001244 psmouse_warn(psmouse, "Failed to deactivate mouse on %s\n",
1245 psmouse->ps2dev.serio->phys);
Andres Salomonbd26f3d2012-02-24 00:51:37 -08001246 return -1;
1247 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001248
1249 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
Andres Salomonbd26f3d2012-02-24 00:51:37 -08001250 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001251}
1252
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001253/*
1254 * psmouse_resync() attempts to re-validate current protocol.
1255 */
David Howellsc4028952006-11-22 14:57:56 +00001256static void psmouse_resync(struct work_struct *work)
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001257{
David Howellsc4028952006-11-22 14:57:56 +00001258 struct psmouse *parent = NULL, *psmouse =
Andres Salomon8bf020e2008-09-16 12:30:33 -04001259 container_of(work, struct psmouse, resync_work.work);
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001260 struct serio *serio = psmouse->ps2dev.serio;
1261 psmouse_ret_t rc = PSMOUSE_GOOD_DATA;
Dmitry Torokhovb7802c52009-09-09 19:13:20 -07001262 bool failed = false, enabled = false;
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001263 int i;
1264
Ingo Molnarc14471d2006-02-19 00:22:11 -05001265 mutex_lock(&psmouse_mutex);
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001266
1267 if (psmouse->state != PSMOUSE_RESYNCING)
1268 goto out;
1269
1270 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1271 parent = serio_get_drvdata(serio->parent);
1272 psmouse_deactivate(parent);
1273 }
1274
Dmitry Torokhovad530772015-11-27 20:47:08 -08001275 /*
1276 * Some mice don't ACK commands sent while they are in the middle of
1277 * transmitting motion packet. To avoid delay we use ps2_sendbyte()
1278 * instead of ps2_command() which would wait for 200ms for an ACK
1279 * that may never come.
1280 * As an additional quirk ALPS touchpads may not only forget to ACK
1281 * disable command but will stop reporting taps, so if we see that
1282 * mouse at least once ACKs disable we will do full reconnect if ACK
1283 * is missing.
1284 */
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001285 psmouse->num_resyncs++;
1286
1287 if (ps2_sendbyte(&psmouse->ps2dev, PSMOUSE_CMD_DISABLE, 20)) {
1288 if (psmouse->num_resyncs < 3 || psmouse->acks_disable_command)
Dmitry Torokhovb7802c52009-09-09 19:13:20 -07001289 failed = true;
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001290 } else
Dmitry Torokhovb7802c52009-09-09 19:13:20 -07001291 psmouse->acks_disable_command = true;
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001292
Dmitry Torokhovad530772015-11-27 20:47:08 -08001293 /*
1294 * Poll the mouse. If it was reset the packet will be shorter than
1295 * psmouse->pktsize and ps2_command will fail. We do not expect and
1296 * do not handle scenario when mouse "upgrades" its protocol while
1297 * disconnected since it would require additional delay. If we ever
1298 * see a mouse that does it we'll adjust the code.
1299 */
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001300 if (!failed) {
1301 if (psmouse->poll(psmouse))
Dmitry Torokhovb7802c52009-09-09 19:13:20 -07001302 failed = true;
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001303 else {
1304 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1305 for (i = 0; i < psmouse->pktsize; i++) {
1306 psmouse->pktcnt++;
David Howells7d12e782006-10-05 14:55:46 +01001307 rc = psmouse->protocol_handler(psmouse);
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001308 if (rc != PSMOUSE_GOOD_DATA)
1309 break;
1310 }
1311 if (rc != PSMOUSE_FULL_PACKET)
Dmitry Torokhovb7802c52009-09-09 19:13:20 -07001312 failed = true;
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001313 psmouse_set_state(psmouse, PSMOUSE_RESYNCING);
1314 }
1315 }
Dmitry Torokhovad530772015-11-27 20:47:08 -08001316
1317 /*
1318 * Now try to enable mouse. We try to do that even if poll failed
1319 * and also repeat our attempts 5 times, otherwise we may be left
1320 * out with disabled mouse.
1321 */
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001322 for (i = 0; i < 5; i++) {
1323 if (!ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE)) {
Dmitry Torokhovb7802c52009-09-09 19:13:20 -07001324 enabled = true;
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001325 break;
1326 }
1327 msleep(200);
1328 }
1329
1330 if (!enabled) {
Dmitry Torokhovb5d21702011-10-10 18:27:03 -07001331 psmouse_warn(psmouse, "failed to re-enable mouse on %s\n",
1332 psmouse->ps2dev.serio->phys);
Dmitry Torokhovb7802c52009-09-09 19:13:20 -07001333 failed = true;
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001334 }
1335
1336 if (failed) {
1337 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
Dmitry Torokhovb5d21702011-10-10 18:27:03 -07001338 psmouse_info(psmouse,
1339 "resync failed, issuing reconnect request\n");
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001340 serio_reconnect(serio);
1341 } else
1342 psmouse_set_state(psmouse, PSMOUSE_ACTIVATED);
1343
1344 if (parent)
1345 psmouse_activate(parent);
1346 out:
Ingo Molnarc14471d2006-02-19 00:22:11 -05001347 mutex_unlock(&psmouse_mutex);
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001348}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001349
1350/*
1351 * psmouse_cleanup() resets the mouse into power-on state.
1352 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001353static void psmouse_cleanup(struct serio *serio)
1354{
1355 struct psmouse *psmouse = serio_get_drvdata(serio);
Dmitry Torokhova1cec062007-02-18 01:40:24 -05001356 struct psmouse *parent = NULL;
1357
1358 mutex_lock(&psmouse_mutex);
1359
1360 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1361 parent = serio_get_drvdata(serio->parent);
1362 psmouse_deactivate(parent);
1363 }
1364
Dmitry Torokhova9f0c382010-02-07 23:10:04 -08001365 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
1366
1367 /*
1368 * Disable stream mode so cleanup routine can proceed undisturbed.
1369 */
1370 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE))
Dmitry Torokhovb5d21702011-10-10 18:27:03 -07001371 psmouse_warn(psmouse, "Failed to disable mouse on %s\n",
1372 psmouse->ps2dev.serio->phys);
Dmitry Torokhova1cec062007-02-18 01:40:24 -05001373
1374 if (psmouse->cleanup)
1375 psmouse->cleanup(psmouse);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001376
Dmitry Torokhovad530772015-11-27 20:47:08 -08001377 /*
1378 * Reset the mouse to defaults (bare PS/2 protocol).
1379 */
Dmitry Torokhov4a299bf2009-12-24 21:40:24 -08001380 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
Dmitry Torokhova1cec062007-02-18 01:40:24 -05001381
Dmitry Torokhovad530772015-11-27 20:47:08 -08001382 /*
1383 * Some boxes, such as HP nx7400, get terribly confused if mouse
1384 * is not fully enabled before suspending/shutting down.
1385 */
Dmitry Torokhova1cec062007-02-18 01:40:24 -05001386 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE);
1387
1388 if (parent) {
1389 if (parent->pt_deactivate)
1390 parent->pt_deactivate(parent);
1391
1392 psmouse_activate(parent);
1393 }
1394
1395 mutex_unlock(&psmouse_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001396}
1397
1398/*
1399 * psmouse_disconnect() closes and frees.
1400 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001401static void psmouse_disconnect(struct serio *serio)
1402{
Dmitry Torokhov04df1922005-06-01 02:39:44 -05001403 struct psmouse *psmouse, *parent = NULL;
1404
1405 psmouse = serio_get_drvdata(serio);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001406
Dmitry Torokhovcfe9e882005-09-04 01:40:20 -05001407 sysfs_remove_group(&serio->dev.kobj, &psmouse_attribute_group);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001408
Ingo Molnarc14471d2006-02-19 00:22:11 -05001409 mutex_lock(&psmouse_mutex);
Dmitry Torokhov04df1922005-06-01 02:39:44 -05001410
Linus Torvalds1da177e2005-04-16 15:20:36 -07001411 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1412
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001413 /* make sure we don't have a resync in progress */
Ingo Molnarc14471d2006-02-19 00:22:11 -05001414 mutex_unlock(&psmouse_mutex);
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001415 flush_workqueue(kpsmoused_wq);
Ingo Molnarc14471d2006-02-19 00:22:11 -05001416 mutex_lock(&psmouse_mutex);
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001417
Linus Torvalds1da177e2005-04-16 15:20:36 -07001418 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1419 parent = serio_get_drvdata(serio->parent);
Dmitry Torokhov04df1922005-06-01 02:39:44 -05001420 psmouse_deactivate(parent);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001421 }
1422
1423 if (psmouse->disconnect)
1424 psmouse->disconnect(psmouse);
1425
Dmitry Torokhov04df1922005-06-01 02:39:44 -05001426 if (parent && parent->pt_deactivate)
1427 parent->pt_deactivate(parent);
1428
Linus Torvalds1da177e2005-04-16 15:20:36 -07001429 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
1430
Linus Torvalds1da177e2005-04-16 15:20:36 -07001431 serio_close(serio);
1432 serio_set_drvdata(serio, NULL);
Dmitry Torokhov2e5b6362005-09-15 02:01:44 -05001433 input_unregister_device(psmouse->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001434 kfree(psmouse);
Dmitry Torokhov04df1922005-06-01 02:39:44 -05001435
1436 if (parent)
1437 psmouse_activate(parent);
1438
Ingo Molnarc14471d2006-02-19 00:22:11 -05001439 mutex_unlock(&psmouse_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001440}
1441
Dmitry Torokhov315eb992009-11-16 22:12:21 -08001442static int psmouse_switch_protocol(struct psmouse *psmouse,
1443 const struct psmouse_protocol *proto)
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001444{
Dmitry Torokhov6b9d363c2010-04-19 00:42:16 -07001445 const struct psmouse_protocol *selected_proto;
Dmitry Torokhov2e5b6362005-09-15 02:01:44 -05001446 struct input_dev *input_dev = psmouse->dev;
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001447
Dmitry Torokhov28aa7f12007-04-12 01:35:09 -04001448 input_dev->dev.parent = &psmouse->ps2dev.serio->dev;
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001449
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001450 if (proto && (proto->detect || proto->init)) {
Dmitry Torokhovee9dfd72011-12-30 15:16:45 -08001451 psmouse_apply_defaults(psmouse);
1452
Dmitry Torokhova62f0d22010-05-19 10:39:17 -07001453 if (proto->detect && proto->detect(psmouse, true) < 0)
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001454 return -1;
1455
1456 if (proto->init && proto->init(psmouse) < 0)
1457 return -1;
1458
1459 psmouse->type = proto->type;
Dmitry Torokhov6b9d363c2010-04-19 00:42:16 -07001460 selected_proto = proto;
1461 } else {
Dmitry Torokhovb7802c52009-09-09 19:13:20 -07001462 psmouse->type = psmouse_extensions(psmouse,
1463 psmouse_max_proto, true);
Dmitry Torokhov6b9d363c2010-04-19 00:42:16 -07001464 selected_proto = psmouse_protocol_by_type(psmouse->type);
1465 }
1466
1467 psmouse->ignore_parity = selected_proto->ignore_parity;
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001468
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001469 /*
1470 * If mouse's packet size is 3 there is no point in polling the
1471 * device in hopes to detect protocol reset - we won't get less
1472 * than 3 bytes response anyhow.
1473 */
1474 if (psmouse->pktsize == 3)
1475 psmouse->resync_time = 0;
1476
1477 /*
1478 * Some smart KVMs fake response to POLL command returning just
1479 * 3 bytes and messing up our resync logic, so if initial poll
1480 * fails we won't try polling the device anymore. Hopefully
1481 * such KVM will maintain initially selected protocol.
1482 */
1483 if (psmouse->resync_time && psmouse->poll(psmouse))
1484 psmouse->resync_time = 0;
1485
Dmitry Torokhov08ffce42006-06-26 01:45:10 -04001486 snprintf(psmouse->devname, sizeof(psmouse->devname), "%s %s %s",
Dmitry Torokhov6b9d363c2010-04-19 00:42:16 -07001487 selected_proto->name, psmouse->vendor, psmouse->name);
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001488
Dmitry Torokhov2e5b6362005-09-15 02:01:44 -05001489 input_dev->name = psmouse->devname;
1490 input_dev->phys = psmouse->phys;
1491 input_dev->id.bustype = BUS_I8042;
1492 input_dev->id.vendor = 0x0002;
1493 input_dev->id.product = psmouse->type;
1494 input_dev->id.version = psmouse->model;
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001495
1496 return 0;
1497}
1498
Linus Torvalds1da177e2005-04-16 15:20:36 -07001499/*
1500 * psmouse_connect() is a callback from the serio module when
1501 * an unhandled serio port is found.
1502 */
1503static int psmouse_connect(struct serio *serio, struct serio_driver *drv)
1504{
1505 struct psmouse *psmouse, *parent = NULL;
Dmitry Torokhov2e5b6362005-09-15 02:01:44 -05001506 struct input_dev *input_dev;
Dmitry Torokhov72155612006-11-05 22:40:19 -05001507 int retval = 0, error = -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001508
Ingo Molnarc14471d2006-02-19 00:22:11 -05001509 mutex_lock(&psmouse_mutex);
Dmitry Torokhov04df1922005-06-01 02:39:44 -05001510
Linus Torvalds1da177e2005-04-16 15:20:36 -07001511 /*
1512 * If this is a pass-through port deactivate parent so the device
1513 * connected to this port can be successfully identified
1514 */
1515 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1516 parent = serio_get_drvdata(serio->parent);
1517 psmouse_deactivate(parent);
1518 }
1519
Dmitry Torokhov2e5b6362005-09-15 02:01:44 -05001520 psmouse = kzalloc(sizeof(struct psmouse), GFP_KERNEL);
1521 input_dev = input_allocate_device();
1522 if (!psmouse || !input_dev)
Dmitry Torokhov72155612006-11-05 22:40:19 -05001523 goto err_free;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001524
Linus Torvalds1da177e2005-04-16 15:20:36 -07001525 ps2_init(&psmouse->ps2dev, serio);
Andres Salomon8bf020e2008-09-16 12:30:33 -04001526 INIT_DELAYED_WORK(&psmouse->resync_work, psmouse_resync);
Dmitry Torokhov2e5b6362005-09-15 02:01:44 -05001527 psmouse->dev = input_dev;
Dmitry Torokhov08ffce42006-06-26 01:45:10 -04001528 snprintf(psmouse->phys, sizeof(psmouse->phys), "%s/input0", serio->phys);
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001529
Linus Torvalds1da177e2005-04-16 15:20:36 -07001530 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
1531
1532 serio_set_drvdata(serio, psmouse);
1533
Dmitry Torokhov72155612006-11-05 22:40:19 -05001534 error = serio_open(serio, drv);
1535 if (error)
1536 goto err_clear_drvdata;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001537
Stefan Assmann66bc2f52015-08-26 13:11:49 -07001538 /* give PT device some time to settle down before probing */
1539 if (serio->id.type == SERIO_PS_PSTHRU)
1540 usleep_range(10000, 15000);
1541
Linus Torvalds1da177e2005-04-16 15:20:36 -07001542 if (psmouse_probe(psmouse) < 0) {
Dmitry Torokhov72155612006-11-05 22:40:19 -05001543 error = -ENODEV;
1544 goto err_close_serio;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001545 }
1546
1547 psmouse->rate = psmouse_rate;
1548 psmouse->resolution = psmouse_resolution;
1549 psmouse->resetafter = psmouse_resetafter;
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001550 psmouse->resync_time = parent ? 0 : psmouse_resync_time;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001551 psmouse->smartscroll = psmouse_smartscroll;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001552
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001553 psmouse_switch_protocol(psmouse, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001554
Linus Torvalds1da177e2005-04-16 15:20:36 -07001555 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001556 psmouse_initialize(psmouse);
1557
Dmitry Torokhov72155612006-11-05 22:40:19 -05001558 error = input_register_device(psmouse->dev);
1559 if (error)
1560 goto err_protocol_disconnect;
Dmitry Torokhov2e5b6362005-09-15 02:01:44 -05001561
Linus Torvalds1da177e2005-04-16 15:20:36 -07001562 if (parent && parent->pt_activate)
1563 parent->pt_activate(parent);
1564
Dmitry Torokhov72155612006-11-05 22:40:19 -05001565 error = sysfs_create_group(&serio->dev.kobj, &psmouse_attribute_group);
1566 if (error)
1567 goto err_pt_deactivate;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001568
1569 psmouse_activate(psmouse);
1570
Dmitry Torokhov72155612006-11-05 22:40:19 -05001571 out:
Dmitry Torokhov04df1922005-06-01 02:39:44 -05001572 /* If this is a pass-through port the parent needs to be re-activated */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001573 if (parent)
1574 psmouse_activate(parent);
1575
Ingo Molnarc14471d2006-02-19 00:22:11 -05001576 mutex_unlock(&psmouse_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001577 return retval;
Dmitry Torokhov72155612006-11-05 22:40:19 -05001578
1579 err_pt_deactivate:
1580 if (parent && parent->pt_deactivate)
1581 parent->pt_deactivate(parent);
Andres Salomon746b31a2008-01-17 12:01:30 -05001582 input_unregister_device(psmouse->dev);
1583 input_dev = NULL; /* so we don't try to free it below */
Dmitry Torokhov72155612006-11-05 22:40:19 -05001584 err_protocol_disconnect:
1585 if (psmouse->disconnect)
1586 psmouse->disconnect(psmouse);
1587 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
1588 err_close_serio:
1589 serio_close(serio);
1590 err_clear_drvdata:
1591 serio_set_drvdata(serio, NULL);
1592 err_free:
1593 input_free_device(input_dev);
1594 kfree(psmouse);
1595
1596 retval = error;
1597 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001598}
1599
Linus Torvalds1da177e2005-04-16 15:20:36 -07001600static int psmouse_reconnect(struct serio *serio)
1601{
1602 struct psmouse *psmouse = serio_get_drvdata(serio);
1603 struct psmouse *parent = NULL;
Dmitry Torokhovef110b22010-05-13 00:42:23 -07001604 unsigned char type;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001605 int rc = -1;
1606
Ingo Molnarc14471d2006-02-19 00:22:11 -05001607 mutex_lock(&psmouse_mutex);
Dmitry Torokhov04df1922005-06-01 02:39:44 -05001608
Linus Torvalds1da177e2005-04-16 15:20:36 -07001609 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1610 parent = serio_get_drvdata(serio->parent);
1611 psmouse_deactivate(parent);
1612 }
1613
1614 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
1615
1616 if (psmouse->reconnect) {
1617 if (psmouse->reconnect(psmouse))
1618 goto out;
Dmitry Torokhovef110b22010-05-13 00:42:23 -07001619 } else {
1620 psmouse_reset(psmouse);
1621
1622 if (psmouse_probe(psmouse) < 0)
1623 goto out;
1624
1625 type = psmouse_extensions(psmouse, psmouse_max_proto, false);
1626 if (psmouse->type != type)
1627 goto out;
Dmitry Torokhovb7802c52009-09-09 19:13:20 -07001628 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001629
Dmitry Torokhovb5d21702011-10-10 18:27:03 -07001630 /*
1631 * OK, the device type (and capabilities) match the old one,
1632 * we can continue using it, complete initialization
Linus Torvalds1da177e2005-04-16 15:20:36 -07001633 */
1634 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1635
1636 psmouse_initialize(psmouse);
1637
1638 if (parent && parent->pt_activate)
1639 parent->pt_activate(parent);
1640
1641 psmouse_activate(psmouse);
1642 rc = 0;
1643
1644out:
1645 /* If this is a pass-through port the parent waits to be activated */
1646 if (parent)
1647 psmouse_activate(parent);
1648
Ingo Molnarc14471d2006-02-19 00:22:11 -05001649 mutex_unlock(&psmouse_mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001650 return rc;
1651}
1652
1653static struct serio_device_id psmouse_serio_ids[] = {
1654 {
1655 .type = SERIO_8042,
1656 .proto = SERIO_ANY,
1657 .id = SERIO_ANY,
1658 .extra = SERIO_ANY,
1659 },
1660 {
1661 .type = SERIO_PS_PSTHRU,
1662 .proto = SERIO_ANY,
1663 .id = SERIO_ANY,
1664 .extra = SERIO_ANY,
1665 },
1666 { 0 }
1667};
1668
1669MODULE_DEVICE_TABLE(serio, psmouse_serio_ids);
1670
1671static struct serio_driver psmouse_drv = {
1672 .driver = {
1673 .name = "psmouse",
1674 },
1675 .description = DRIVER_DESC,
1676 .id_table = psmouse_serio_ids,
1677 .interrupt = psmouse_interrupt,
1678 .connect = psmouse_connect,
1679 .reconnect = psmouse_reconnect,
1680 .disconnect = psmouse_disconnect,
1681 .cleanup = psmouse_cleanup,
1682};
1683
Dmitry Torokhovcfe9e882005-09-04 01:40:20 -05001684ssize_t psmouse_attr_show_helper(struct device *dev, struct device_attribute *devattr,
1685 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001686{
1687 struct serio *serio = to_serio_port(dev);
Dmitry Torokhovcfe9e882005-09-04 01:40:20 -05001688 struct psmouse_attribute *attr = to_psmouse_attr(devattr);
1689 struct psmouse *psmouse;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001690
Dmitry Torokhovcfe9e882005-09-04 01:40:20 -05001691 psmouse = serio_get_drvdata(serio);
1692
Eric W. Biederman59b01512010-01-05 17:56:02 -08001693 return attr->show(psmouse, attr->data, buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001694}
1695
Dmitry Torokhovcfe9e882005-09-04 01:40:20 -05001696ssize_t psmouse_attr_set_helper(struct device *dev, struct device_attribute *devattr,
1697 const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001698{
1699 struct serio *serio = to_serio_port(dev);
Dmitry Torokhovcfe9e882005-09-04 01:40:20 -05001700 struct psmouse_attribute *attr = to_psmouse_attr(devattr);
1701 struct psmouse *psmouse, *parent = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001702 int retval;
1703
Ingo Molnarc14471d2006-02-19 00:22:11 -05001704 retval = mutex_lock_interruptible(&psmouse_mutex);
Dmitry Torokhov04df1922005-06-01 02:39:44 -05001705 if (retval)
Eric W. Biederman59b01512010-01-05 17:56:02 -08001706 goto out;
Dmitry Torokhov04df1922005-06-01 02:39:44 -05001707
Dmitry Torokhovcfe9e882005-09-04 01:40:20 -05001708 psmouse = serio_get_drvdata(serio);
1709
Andres Salomon68d48222008-09-16 12:30:34 -04001710 if (attr->protect) {
1711 if (psmouse->state == PSMOUSE_IGNORE) {
1712 retval = -ENODEV;
1713 goto out_unlock;
1714 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001715
Andres Salomon68d48222008-09-16 12:30:34 -04001716 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1717 parent = serio_get_drvdata(serio->parent);
1718 psmouse_deactivate(parent);
1719 }
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001720
Andres Salomon68d48222008-09-16 12:30:34 -04001721 psmouse_deactivate(psmouse);
1722 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001723
Dmitry Torokhovcfe9e882005-09-04 01:40:20 -05001724 retval = attr->set(psmouse, attr->data, buf, count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001725
Andres Salomon68d48222008-09-16 12:30:34 -04001726 if (attr->protect) {
1727 if (retval != -ENODEV)
1728 psmouse_activate(psmouse);
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001729
Andres Salomon68d48222008-09-16 12:30:34 -04001730 if (parent)
1731 psmouse_activate(parent);
1732 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001733
Ingo Molnarc14471d2006-02-19 00:22:11 -05001734 out_unlock:
1735 mutex_unlock(&psmouse_mutex);
Eric W. Biederman59b01512010-01-05 17:56:02 -08001736 out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001737 return retval;
1738}
1739
Dmitry Torokhovcfe9e882005-09-04 01:40:20 -05001740static ssize_t psmouse_show_int_attr(struct psmouse *psmouse, void *offset, char *buf)
1741{
Sergey Vlasoveb5d58292006-11-09 00:34:27 -05001742 unsigned int *field = (unsigned int *)((char *)psmouse + (size_t)offset);
Dmitry Torokhovcfe9e882005-09-04 01:40:20 -05001743
Sergey Vlasoveb5d58292006-11-09 00:34:27 -05001744 return sprintf(buf, "%u\n", *field);
Dmitry Torokhovcfe9e882005-09-04 01:40:20 -05001745}
1746
1747static ssize_t psmouse_set_int_attr(struct psmouse *psmouse, void *offset, const char *buf, size_t count)
1748{
Sergey Vlasoveb5d58292006-11-09 00:34:27 -05001749 unsigned int *field = (unsigned int *)((char *)psmouse + (size_t)offset);
JJ Ding76496e72011-11-09 10:20:14 -08001750 unsigned int value;
1751 int err;
Dmitry Torokhovcfe9e882005-09-04 01:40:20 -05001752
JJ Ding76496e72011-11-09 10:20:14 -08001753 err = kstrtouint(buf, 10, &value);
1754 if (err)
1755 return err;
Sergey Vlasoveb5d58292006-11-09 00:34:27 -05001756
Dmitry Torokhovcfe9e882005-09-04 01:40:20 -05001757 *field = value;
1758
1759 return count;
1760}
1761
1762static ssize_t psmouse_attr_show_protocol(struct psmouse *psmouse, void *data, char *buf)
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001763{
1764 return sprintf(buf, "%s\n", psmouse_protocol_by_type(psmouse->type)->name);
1765}
1766
Dmitry Torokhovcfe9e882005-09-04 01:40:20 -05001767static ssize_t psmouse_attr_set_protocol(struct psmouse *psmouse, void *data, const char *buf, size_t count)
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001768{
1769 struct serio *serio = psmouse->ps2dev.serio;
1770 struct psmouse *parent = NULL;
Dmitry Torokhov72155612006-11-05 22:40:19 -05001771 struct input_dev *old_dev, *new_dev;
1772 const struct psmouse_protocol *proto, *old_proto;
1773 int error;
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001774 int retry = 0;
1775
Dmitry Torokhov72155612006-11-05 22:40:19 -05001776 proto = psmouse_protocol_by_name(buf, count);
1777 if (!proto)
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001778 return -EINVAL;
1779
1780 if (psmouse->type == proto->type)
1781 return count;
1782
Dmitry Torokhov72155612006-11-05 22:40:19 -05001783 new_dev = input_allocate_device();
1784 if (!new_dev)
Dmitry Torokhov2e5b6362005-09-15 02:01:44 -05001785 return -ENOMEM;
1786
Dmitry Eremin-Solenikov09822582010-10-04 21:46:10 -07001787 while (!list_empty(&serio->children)) {
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001788 if (++retry > 3) {
Dmitry Torokhovb5d21702011-10-10 18:27:03 -07001789 psmouse_warn(psmouse,
1790 "failed to destroy children ports, protocol change aborted.\n");
Dmitry Torokhov2e5b6362005-09-15 02:01:44 -05001791 input_free_device(new_dev);
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001792 return -EIO;
1793 }
1794
Ingo Molnarc14471d2006-02-19 00:22:11 -05001795 mutex_unlock(&psmouse_mutex);
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001796 serio_unregister_child_port(serio);
Ingo Molnarc14471d2006-02-19 00:22:11 -05001797 mutex_lock(&psmouse_mutex);
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001798
Dmitry Torokhov2e5b6362005-09-15 02:01:44 -05001799 if (serio->drv != &psmouse_drv) {
1800 input_free_device(new_dev);
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001801 return -ENODEV;
Dmitry Torokhov2e5b6362005-09-15 02:01:44 -05001802 }
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001803
Dmitry Torokhov2e5b6362005-09-15 02:01:44 -05001804 if (psmouse->type == proto->type) {
1805 input_free_device(new_dev);
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001806 return count; /* switched by other thread */
Dmitry Torokhov2e5b6362005-09-15 02:01:44 -05001807 }
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001808 }
1809
1810 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1811 parent = serio_get_drvdata(serio->parent);
1812 if (parent->pt_deactivate)
1813 parent->pt_deactivate(parent);
1814 }
1815
Dmitry Torokhov72155612006-11-05 22:40:19 -05001816 old_dev = psmouse->dev;
1817 old_proto = psmouse_protocol_by_type(psmouse->type);
1818
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001819 if (psmouse->disconnect)
1820 psmouse->disconnect(psmouse);
1821
1822 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001823
Dmitry Torokhov2e5b6362005-09-15 02:01:44 -05001824 psmouse->dev = new_dev;
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001825 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
1826
1827 if (psmouse_switch_protocol(psmouse, proto) < 0) {
1828 psmouse_reset(psmouse);
1829 /* default to PSMOUSE_PS2 */
1830 psmouse_switch_protocol(psmouse, &psmouse_protocols[0]);
1831 }
1832
1833 psmouse_initialize(psmouse);
1834 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1835
Dmitry Torokhov72155612006-11-05 22:40:19 -05001836 error = input_register_device(psmouse->dev);
1837 if (error) {
1838 if (psmouse->disconnect)
1839 psmouse->disconnect(psmouse);
1840
1841 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
1842 input_free_device(new_dev);
1843 psmouse->dev = old_dev;
1844 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
1845 psmouse_switch_protocol(psmouse, old_proto);
1846 psmouse_initialize(psmouse);
1847 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1848
1849 return error;
1850 }
1851
1852 input_unregister_device(old_dev);
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001853
1854 if (parent && parent->pt_activate)
1855 parent->pt_activate(parent);
1856
1857 return count;
1858}
1859
Dmitry Torokhovcfe9e882005-09-04 01:40:20 -05001860static ssize_t psmouse_attr_set_rate(struct psmouse *psmouse, void *data, const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001861{
JJ Ding76496e72011-11-09 10:20:14 -08001862 unsigned int value;
1863 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001864
JJ Ding76496e72011-11-09 10:20:14 -08001865 err = kstrtouint(buf, 10, &value);
1866 if (err)
1867 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001868
1869 psmouse->set_rate(psmouse, value);
1870 return count;
1871}
1872
Dmitry Torokhovcfe9e882005-09-04 01:40:20 -05001873static ssize_t psmouse_attr_set_resolution(struct psmouse *psmouse, void *data, const char *buf, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001874{
JJ Ding76496e72011-11-09 10:20:14 -08001875 unsigned int value;
1876 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001877
JJ Ding76496e72011-11-09 10:20:14 -08001878 err = kstrtouint(buf, 10, &value);
1879 if (err)
1880 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001881
1882 psmouse->set_resolution(psmouse, value);
1883 return count;
1884}
1885
Linus Torvalds1da177e2005-04-16 15:20:36 -07001886
Rusty Russell9bbb9e52010-08-11 23:04:12 -06001887static int psmouse_set_maxproto(const char *val, const struct kernel_param *kp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001888{
Helge Dellere38de672006-09-10 21:54:39 -04001889 const struct psmouse_protocol *proto;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001890
1891 if (!val)
1892 return -EINVAL;
1893
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001894 proto = psmouse_protocol_by_name(val, strlen(val));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001895
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001896 if (!proto || !proto->maxproto)
1897 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001898
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001899 *((unsigned int *)kp->arg) = proto->type;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001900
Stephen Evanchik541e3162005-08-08 01:26:18 -05001901 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001902}
1903
Rusty Russell9bbb9e52010-08-11 23:04:12 -06001904static int psmouse_get_maxproto(char *buffer, const struct kernel_param *kp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001905{
Dmitry Torokhovdbf4ccd2005-06-01 02:40:01 -05001906 int type = *((unsigned int *)kp->arg);
1907
Takashi Iwai3d4c3aa2009-11-12 23:30:52 -08001908 return sprintf(buffer, "%s", psmouse_protocol_by_type(type)->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001909}
1910
1911static int __init psmouse_init(void)
1912{
Akinobu Mita153a9df02006-11-23 23:35:10 -05001913 int err;
1914
Dmitry Torokhov7705d542009-12-03 23:21:14 -08001915 lifebook_module_init();
1916 synaptics_module_init();
Daniel Drakeca94ec42010-11-11 22:19:57 -08001917 hgpk_module_init();
Dmitry Torokhov7705d542009-12-03 23:21:14 -08001918
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001919 kpsmoused_wq = create_singlethread_workqueue("kpsmoused");
1920 if (!kpsmoused_wq) {
Dmitry Torokhovb5d21702011-10-10 18:27:03 -07001921 pr_err("failed to create kpsmoused workqueue\n");
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001922 return -ENOMEM;
1923 }
1924
Akinobu Mita153a9df02006-11-23 23:35:10 -05001925 err = serio_register_driver(&psmouse_drv);
1926 if (err)
1927 destroy_workqueue(kpsmoused_wq);
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001928
Akinobu Mita153a9df02006-11-23 23:35:10 -05001929 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001930}
1931
1932static void __exit psmouse_exit(void)
1933{
1934 serio_unregister_driver(&psmouse_drv);
Dmitry Torokhovf0d5c6f42006-01-14 00:27:37 -05001935 destroy_workqueue(kpsmoused_wq);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001936}
1937
1938module_init(psmouse_init);
1939module_exit(psmouse_exit);