4 * Copyright (c) 1999-2002 Vojtech Pavlik
5 * Copyright (c) 2003-2004 Dmitry Torokhov
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.
14 #include <linux/delay.h>
15 #include <linux/module.h>
16 #include <linux/moduleparam.h>
17 #include <linux/slab.h>
18 #include <linux/interrupt.h>
19 #include <linux/input.h>
20 #include <linux/serio.h>
21 #include <linux/init.h>
22 #include <linux/libps2.h>
24 #include "synaptics.h"
25 #include "logips2pp.h"
29 #define DRIVER_DESC "PS/2 mouse driver"
31 MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
32 MODULE_DESCRIPTION(DRIVER_DESC);
33 MODULE_LICENSE("GPL");
35 static unsigned int psmouse_max_proto = PSMOUSE_AUTO;
36 static int psmouse_set_maxproto(const char *val, struct kernel_param *kp);
37 static int psmouse_get_maxproto(char *buffer, struct kernel_param *kp);
38 #define param_check_proto_abbrev(name, p) __param_check(name, p, unsigned int)
39 #define param_set_proto_abbrev psmouse_set_maxproto
40 #define param_get_proto_abbrev psmouse_get_maxproto
41 module_param_named(proto, psmouse_max_proto, proto_abbrev, 0644);
42 MODULE_PARM_DESC(proto, "Highest protocol extension to probe (bare, imps, exps, any). Useful for KVM switches.");
44 static unsigned int psmouse_resolution = 200;
45 module_param_named(resolution, psmouse_resolution, uint, 0644);
46 MODULE_PARM_DESC(resolution, "Resolution, in dpi.");
48 static unsigned int psmouse_rate = 100;
49 module_param_named(rate, psmouse_rate, uint, 0644);
50 MODULE_PARM_DESC(rate, "Report rate, in reports per second.");
52 static unsigned int psmouse_smartscroll = 1;
53 module_param_named(smartscroll, psmouse_smartscroll, bool, 0644);
54 MODULE_PARM_DESC(smartscroll, "Logitech Smartscroll autorepeat, 1 = enabled (default), 0 = disabled.");
56 static unsigned int psmouse_resetafter;
57 module_param_named(resetafter, psmouse_resetafter, uint, 0644);
58 MODULE_PARM_DESC(resetafter, "Reset device after so many bad packets (0 = never).");
60 PSMOUSE_DEFINE_ATTR(protocol);
61 PSMOUSE_DEFINE_ATTR(rate);
62 PSMOUSE_DEFINE_ATTR(resolution);
63 PSMOUSE_DEFINE_ATTR(resetafter);
65 __obsolete_setup("psmouse_noext");
66 __obsolete_setup("psmouse_resolution=");
67 __obsolete_setup("psmouse_smartscroll=");
68 __obsolete_setup("psmouse_resetafter=");
69 __obsolete_setup("psmouse_rate=");
72 * psmouse_sem protects all operations changing state of mouse
73 * (connecting, disconnecting, changing rate or resolution via
74 * sysfs). We could use a per-device semaphore but since there
75 * rarely more than one PS/2 mouse connected and since semaphore
76 * is taken in "slow" paths it is not worth it.
78 static DECLARE_MUTEX(psmouse_sem);
80 struct psmouse_protocol {
81 enum psmouse_type type;
85 int (*detect)(struct psmouse *, int);
86 int (*init)(struct psmouse *);
90 * psmouse_process_byte() analyzes the PS/2 data stream and reports
91 * relevant events to the input module once full packet has arrived.
94 static psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse, struct pt_regs *regs)
96 struct input_dev *dev = &psmouse->dev;
97 unsigned char *packet = psmouse->packet;
99 if (psmouse->pktcnt < psmouse->pktsize)
100 return PSMOUSE_GOOD_DATA;
103 * Full packet accumulated, process it
106 input_regs(dev, regs);
109 * Scroll wheel on IntelliMice, scroll buttons on NetMice
112 if (psmouse->type == PSMOUSE_IMPS || psmouse->type == PSMOUSE_GENPS)
113 input_report_rel(dev, REL_WHEEL, -(signed char) packet[3]);
116 * Scroll wheel and buttons on IntelliMouse Explorer
119 if (psmouse->type == PSMOUSE_IMEX) {
120 input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 8) - (int) (packet[3] & 7));
121 input_report_key(dev, BTN_SIDE, (packet[3] >> 4) & 1);
122 input_report_key(dev, BTN_EXTRA, (packet[3] >> 5) & 1);
126 * Extra buttons on Genius NewNet 3D
129 if (psmouse->type == PSMOUSE_GENPS) {
130 input_report_key(dev, BTN_SIDE, (packet[0] >> 6) & 1);
131 input_report_key(dev, BTN_EXTRA, (packet[0] >> 7) & 1);
135 * Extra button on ThinkingMouse
137 if (psmouse->type == PSMOUSE_THINKPS) {
138 input_report_key(dev, BTN_EXTRA, (packet[0] >> 3) & 1);
139 /* Without this bit of weirdness moving up gives wildly high Y changes. */
140 packet[1] |= (packet[0] & 0x40) << 1;
147 input_report_key(dev, BTN_LEFT, packet[0] & 1);
148 input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1);
149 input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1);
151 input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0);
152 input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0);
156 return PSMOUSE_FULL_PACKET;
160 * psmouse_interrupt() handles incoming characters, either gathering them into
161 * packets or passing them to the command routine as command output.
164 static irqreturn_t psmouse_interrupt(struct serio *serio,
165 unsigned char data, unsigned int flags, struct pt_regs *regs)
167 struct psmouse *psmouse = serio_get_drvdata(serio);
170 if (psmouse->state == PSMOUSE_IGNORE)
173 if (flags & (SERIO_PARITY|SERIO_TIMEOUT)) {
174 if (psmouse->state == PSMOUSE_ACTIVATED)
175 printk(KERN_WARNING "psmouse.c: bad data from KBC -%s%s\n",
176 flags & SERIO_TIMEOUT ? " timeout" : "",
177 flags & SERIO_PARITY ? " bad parity" : "");
178 ps2_cmd_aborted(&psmouse->ps2dev);
182 if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_ACK))
183 if (ps2_handle_ack(&psmouse->ps2dev, data))
186 if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_CMD))
187 if (ps2_handle_response(&psmouse->ps2dev, data))
190 if (psmouse->state == PSMOUSE_INITIALIZING)
193 if (psmouse->state == PSMOUSE_ACTIVATED &&
194 psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) {
195 printk(KERN_WARNING "psmouse.c: %s at %s lost synchronization, throwing %d bytes away.\n",
196 psmouse->name, psmouse->phys, psmouse->pktcnt);
200 psmouse->last = jiffies;
201 psmouse->packet[psmouse->pktcnt++] = data;
203 if (psmouse->packet[0] == PSMOUSE_RET_BAT) {
204 if (psmouse->pktcnt == 1)
207 if (psmouse->pktcnt == 2) {
208 if (psmouse->packet[1] == PSMOUSE_RET_ID) {
209 psmouse->state = PSMOUSE_IGNORE;
210 serio_reconnect(serio);
213 if (psmouse->type == PSMOUSE_SYNAPTICS) {
214 /* neither 0xAA nor 0x00 are valid first bytes
215 * for a packet in absolute mode
223 rc = psmouse->protocol_handler(psmouse, regs);
226 case PSMOUSE_BAD_DATA:
227 printk(KERN_WARNING "psmouse.c: %s at %s lost sync at byte %d\n",
228 psmouse->name, psmouse->phys, psmouse->pktcnt);
231 if (++psmouse->out_of_sync == psmouse->resetafter) {
232 psmouse->state = PSMOUSE_IGNORE;
233 printk(KERN_NOTICE "psmouse.c: issuing reconnect request\n");
234 serio_reconnect(psmouse->ps2dev.serio);
238 case PSMOUSE_FULL_PACKET:
240 if (psmouse->out_of_sync) {
241 psmouse->out_of_sync = 0;
242 printk(KERN_NOTICE "psmouse.c: %s at %s - driver resynched.\n",
243 psmouse->name, psmouse->phys);
247 case PSMOUSE_GOOD_DATA:
256 * psmouse_sliced_command() sends an extended PS/2 command to the mouse
257 * using sliced syntax, understood by advanced devices, such as Logitech
258 * or Synaptics touchpads. The command is encoded as:
259 * 0xE6 0xE8 rr 0xE8 ss 0xE8 tt 0xE8 uu where (rr*64)+(ss*16)+(tt*4)+uu
262 int psmouse_sliced_command(struct psmouse *psmouse, unsigned char command)
266 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11))
269 for (i = 6; i >= 0; i -= 2) {
270 unsigned char d = (command >> i) & 3;
271 if (ps2_command(&psmouse->ps2dev, &d, PSMOUSE_CMD_SETRES))
280 * psmouse_reset() resets the mouse into power-on state.
282 int psmouse_reset(struct psmouse *psmouse)
284 unsigned char param[2];
286 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_RESET_BAT))
289 if (param[0] != PSMOUSE_RET_BAT && param[1] != PSMOUSE_RET_ID)
297 * Genius NetMouse magic init.
299 static int genius_detect(struct psmouse *psmouse, int set_properties)
301 struct ps2dev *ps2dev = &psmouse->ps2dev;
302 unsigned char param[4];
305 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
306 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
307 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
308 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
309 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
311 if (param[0] != 0x00 || param[1] != 0x33 || param[2] != 0x55)
314 if (set_properties) {
315 set_bit(BTN_EXTRA, psmouse->dev.keybit);
316 set_bit(BTN_SIDE, psmouse->dev.keybit);
317 set_bit(REL_WHEEL, psmouse->dev.relbit);
319 psmouse->vendor = "Genius";
320 psmouse->name = "Wheel Mouse";
321 psmouse->pktsize = 4;
328 * IntelliMouse magic init.
330 static int intellimouse_detect(struct psmouse *psmouse, int set_properties)
332 struct ps2dev *ps2dev = &psmouse->ps2dev;
333 unsigned char param[2];
336 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
338 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
340 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
341 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
346 if (set_properties) {
347 set_bit(REL_WHEEL, psmouse->dev.relbit);
349 if (!psmouse->vendor) psmouse->vendor = "Generic";
350 if (!psmouse->name) psmouse->name = "Wheel Mouse";
351 psmouse->pktsize = 4;
358 * Try IntelliMouse/Explorer magic init.
360 static int im_explorer_detect(struct psmouse *psmouse, int set_properties)
362 struct ps2dev *ps2dev = &psmouse->ps2dev;
363 unsigned char param[2];
365 intellimouse_detect(psmouse, 0);
368 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
370 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
372 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
373 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
378 if (set_properties) {
379 set_bit(REL_WHEEL, psmouse->dev.relbit);
380 set_bit(BTN_SIDE, psmouse->dev.keybit);
381 set_bit(BTN_EXTRA, psmouse->dev.keybit);
383 if (!psmouse->vendor) psmouse->vendor = "Generic";
384 if (!psmouse->name) psmouse->name = "Explorer Mouse";
385 psmouse->pktsize = 4;
392 * Kensington ThinkingMouse / ExpertMouse magic init.
394 static int thinking_detect(struct psmouse *psmouse, int set_properties)
396 struct ps2dev *ps2dev = &psmouse->ps2dev;
397 unsigned char param[2];
398 unsigned char seq[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20, 0 };
402 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
404 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
405 for (i = 0; seq[i]; i++)
406 ps2_command(ps2dev, seq + i, PSMOUSE_CMD_SETRATE);
407 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
412 if (set_properties) {
413 set_bit(BTN_EXTRA, psmouse->dev.keybit);
415 psmouse->vendor = "Kensington";
416 psmouse->name = "ThinkingMouse";
423 * Bare PS/2 protocol "detection". Always succeeds.
425 static int ps2bare_detect(struct psmouse *psmouse, int set_properties)
427 if (set_properties) {
428 if (!psmouse->vendor) psmouse->vendor = "Generic";
429 if (!psmouse->name) psmouse->name = "Mouse";
437 * psmouse_extensions() probes for any extensions to the basic PS/2 protocol
438 * the mouse may have.
441 static int psmouse_extensions(struct psmouse *psmouse,
442 unsigned int max_proto, int set_properties)
444 int synaptics_hardware = 0;
447 * We always check for lifebook because it does not disturb mouse
448 * (it only checks DMI information).
450 if (lifebook_detect(psmouse, set_properties) == 0) {
451 if (max_proto > PSMOUSE_IMEX) {
452 if (!set_properties || lifebook_init(psmouse) == 0)
453 return PSMOUSE_LIFEBOOK;
458 * Try Kensington ThinkingMouse (we try first, because synaptics probe
459 * upsets the thinkingmouse).
462 if (max_proto > PSMOUSE_IMEX && thinking_detect(psmouse, set_properties) == 0)
463 return PSMOUSE_THINKPS;
466 * Try Synaptics TouchPad
468 if (max_proto > PSMOUSE_PS2 && synaptics_detect(psmouse, set_properties) == 0) {
469 synaptics_hardware = 1;
471 if (max_proto > PSMOUSE_IMEX) {
472 if (!set_properties || synaptics_init(psmouse) == 0)
473 return PSMOUSE_SYNAPTICS;
475 * Some Synaptics touchpads can emulate extended protocols (like IMPS/2).
476 * Unfortunately Logitech/Genius probes confuse some firmware versions so
477 * we'll have to skip them.
479 max_proto = PSMOUSE_IMEX;
482 * Make sure that touchpad is in relative mode, gestures (taps) are enabled
484 synaptics_reset(psmouse);
490 if (max_proto > PSMOUSE_IMEX) {
491 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
492 if (alps_detect(psmouse, set_properties) == 0) {
493 if (!set_properties || alps_init(psmouse) == 0)
496 * Init failed, try basic relative protocols
498 max_proto = PSMOUSE_IMEX;
502 if (max_proto > PSMOUSE_IMEX && genius_detect(psmouse, set_properties) == 0)
503 return PSMOUSE_GENPS;
505 if (max_proto > PSMOUSE_IMEX && ps2pp_init(psmouse, set_properties) == 0)
506 return PSMOUSE_PS2PP;
509 * Reset to defaults in case the device got confused by extended
512 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
514 if (max_proto >= PSMOUSE_IMEX && im_explorer_detect(psmouse, set_properties) == 0)
517 if (max_proto >= PSMOUSE_IMPS && intellimouse_detect(psmouse, set_properties) == 0)
521 * Okay, all failed, we have a standard mouse here. The number of the buttons
522 * is still a question, though. We assume 3.
524 ps2bare_detect(psmouse, set_properties);
526 if (synaptics_hardware) {
528 * We detected Synaptics hardware but it did not respond to IMPS/2 probes.
529 * We need to reset the touchpad because if there is a track point on the
530 * pass through port it could get disabled while probing for protocol
533 psmouse_reset(psmouse);
534 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
540 static struct psmouse_protocol psmouse_protocols[] = {
546 .detect = ps2bare_detect,
549 .type = PSMOUSE_PS2PP,
552 .detect = ps2pp_init,
555 .type = PSMOUSE_THINKPS,
558 .detect = thinking_detect,
561 .type = PSMOUSE_GENPS,
564 .detect = genius_detect,
567 .type = PSMOUSE_IMPS,
571 .detect = intellimouse_detect,
574 .type = PSMOUSE_IMEX,
578 .detect = im_explorer_detect,
581 .type = PSMOUSE_SYNAPTICS,
583 .alias = "synaptics",
584 .detect = synaptics_detect,
585 .init = synaptics_init,
588 .type = PSMOUSE_ALPS,
591 .detect = alps_detect,
595 .type = PSMOUSE_LIFEBOOK,
598 .init = lifebook_init,
601 .type = PSMOUSE_AUTO,
608 static struct psmouse_protocol *psmouse_protocol_by_type(enum psmouse_type type)
612 for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++)
613 if (psmouse_protocols[i].type == type)
614 return &psmouse_protocols[i];
617 return &psmouse_protocols[0];
620 static struct psmouse_protocol *psmouse_protocol_by_name(const char *name, size_t len)
622 struct psmouse_protocol *p;
625 for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++) {
626 p = &psmouse_protocols[i];
628 if ((strlen(p->name) == len && !strncmp(p->name, name, len)) ||
629 (strlen(p->alias) == len && !strncmp(p->alias, name, len)))
630 return &psmouse_protocols[i];
638 * psmouse_probe() probes for a PS/2 mouse.
641 static int psmouse_probe(struct psmouse *psmouse)
643 struct ps2dev *ps2dev = &psmouse->ps2dev;
644 unsigned char param[2];
647 * First, we check if it's a mouse. It should send 0x00 or 0x03
648 * in case of an IntelliMouse in 4-byte mode or 0x04 for IM Explorer.
649 * Sunrex K8561 IR Keyboard/Mouse reports 0xff on second and subsequent
650 * ID queries, probably due to a firmware bug.
654 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETID))
657 if (param[0] != 0x00 && param[0] != 0x03 &&
658 param[0] != 0x04 && param[0] != 0xff)
662 * Then we reset and disable the mouse so that it doesn't generate events.
665 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_DIS))
666 printk(KERN_WARNING "psmouse.c: Failed to reset mouse on %s\n", ps2dev->serio->phys);
672 * Here we set the mouse resolution.
675 void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution)
677 unsigned char params[] = { 0, 1, 2, 2, 3 };
679 if (resolution == 0 || resolution > 200)
682 ps2_command(&psmouse->ps2dev, ¶ms[resolution / 50], PSMOUSE_CMD_SETRES);
683 psmouse->resolution = 25 << params[resolution / 50];
687 * Here we set the mouse report rate.
690 static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate)
692 unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 };
695 while (rates[i] > rate) i++;
696 ps2_command(&psmouse->ps2dev, &rates[i], PSMOUSE_CMD_SETRATE);
697 psmouse->rate = rates[i];
701 * psmouse_initialize() initializes the mouse to a sane state.
704 static void psmouse_initialize(struct psmouse *psmouse)
707 * We set the mouse into streaming mode.
710 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM);
713 * We set the mouse report rate, resolution and scaling.
716 if (psmouse_max_proto != PSMOUSE_PS2) {
717 psmouse->set_rate(psmouse, psmouse->rate);
718 psmouse->set_resolution(psmouse, psmouse->resolution);
719 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
724 * psmouse_set_state() sets new psmouse state and resets all flags and
725 * counters while holding serio lock so fighting with interrupt handler
729 static void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state)
731 serio_pause_rx(psmouse->ps2dev.serio);
732 psmouse->state = new_state;
733 psmouse->pktcnt = psmouse->out_of_sync = 0;
734 psmouse->ps2dev.flags = 0;
735 serio_continue_rx(psmouse->ps2dev.serio);
739 * psmouse_activate() enables the mouse so that we get motion reports from it.
742 static void psmouse_activate(struct psmouse *psmouse)
744 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE))
745 printk(KERN_WARNING "psmouse.c: Failed to enable mouse on %s\n",
746 psmouse->ps2dev.serio->phys);
748 psmouse_set_state(psmouse, PSMOUSE_ACTIVATED);
753 * psmouse_deactivate() puts the mouse into poll mode so that we don't get motion
754 * reports from it unless we explicitely request it.
757 static void psmouse_deactivate(struct psmouse *psmouse)
759 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE))
760 printk(KERN_WARNING "psmouse.c: Failed to deactivate mouse on %s\n",
761 psmouse->ps2dev.serio->phys);
763 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
768 * psmouse_cleanup() resets the mouse into power-on state.
771 static void psmouse_cleanup(struct serio *serio)
773 struct psmouse *psmouse = serio_get_drvdata(serio);
775 psmouse_reset(psmouse);
779 * psmouse_disconnect() closes and frees.
782 static void psmouse_disconnect(struct serio *serio)
784 struct psmouse *psmouse, *parent = NULL;
786 psmouse = serio_get_drvdata(serio);
788 device_remove_file(&serio->dev, &psmouse_attr_protocol);
789 device_remove_file(&serio->dev, &psmouse_attr_rate);
790 device_remove_file(&serio->dev, &psmouse_attr_resolution);
791 device_remove_file(&serio->dev, &psmouse_attr_resetafter);
795 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
797 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
798 parent = serio_get_drvdata(serio->parent);
799 psmouse_deactivate(parent);
802 if (psmouse->disconnect)
803 psmouse->disconnect(psmouse);
805 if (parent && parent->pt_deactivate)
806 parent->pt_deactivate(parent);
808 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
810 input_unregister_device(&psmouse->dev);
812 serio_set_drvdata(serio, NULL);
816 psmouse_activate(parent);
821 static int psmouse_switch_protocol(struct psmouse *psmouse, struct psmouse_protocol *proto)
823 memset(&psmouse->dev, 0, sizeof(struct input_dev));
825 init_input_dev(&psmouse->dev);
827 psmouse->dev.private = psmouse;
828 psmouse->dev.dev = &psmouse->ps2dev.serio->dev;
830 psmouse->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
831 psmouse->dev.keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
832 psmouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y);
834 psmouse->set_rate = psmouse_set_rate;
835 psmouse->set_resolution = psmouse_set_resolution;
836 psmouse->protocol_handler = psmouse_process_byte;
837 psmouse->pktsize = 3;
839 if (proto && (proto->detect || proto->init)) {
840 if (proto->detect && proto->detect(psmouse, 1) < 0)
843 if (proto->init && proto->init(psmouse) < 0)
846 psmouse->type = proto->type;
849 psmouse->type = psmouse_extensions(psmouse, psmouse_max_proto, 1);
851 sprintf(psmouse->devname, "%s %s %s",
852 psmouse_protocol_by_type(psmouse->type)->name, psmouse->vendor, psmouse->name);
854 psmouse->dev.name = psmouse->devname;
855 psmouse->dev.phys = psmouse->phys;
856 psmouse->dev.id.bustype = BUS_I8042;
857 psmouse->dev.id.vendor = 0x0002;
858 psmouse->dev.id.product = psmouse->type;
859 psmouse->dev.id.version = psmouse->model;
865 * psmouse_connect() is a callback from the serio module when
866 * an unhandled serio port is found.
868 static int psmouse_connect(struct serio *serio, struct serio_driver *drv)
870 struct psmouse *psmouse, *parent = NULL;
876 * If this is a pass-through port deactivate parent so the device
877 * connected to this port can be successfully identified
879 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
880 parent = serio_get_drvdata(serio->parent);
881 psmouse_deactivate(parent);
884 if (!(psmouse = kcalloc(1, sizeof(struct psmouse), GFP_KERNEL))) {
889 ps2_init(&psmouse->ps2dev, serio);
890 sprintf(psmouse->phys, "%s/input0", serio->phys);
892 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
894 serio_set_drvdata(serio, psmouse);
896 retval = serio_open(serio, drv);
898 serio_set_drvdata(serio, NULL);
903 if (psmouse_probe(psmouse) < 0) {
905 serio_set_drvdata(serio, NULL);
911 psmouse->rate = psmouse_rate;
912 psmouse->resolution = psmouse_resolution;
913 psmouse->resetafter = psmouse_resetafter;
914 psmouse->smartscroll = psmouse_smartscroll;
916 psmouse_switch_protocol(psmouse, NULL);
918 input_register_device(&psmouse->dev);
919 printk(KERN_INFO "input: %s on %s\n", psmouse->devname, serio->phys);
921 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
923 psmouse_initialize(psmouse);
925 if (parent && parent->pt_activate)
926 parent->pt_activate(parent);
928 device_create_file(&serio->dev, &psmouse_attr_protocol);
929 device_create_file(&serio->dev, &psmouse_attr_rate);
930 device_create_file(&serio->dev, &psmouse_attr_resolution);
931 device_create_file(&serio->dev, &psmouse_attr_resetafter);
933 psmouse_activate(psmouse);
938 /* If this is a pass-through port the parent needs to be re-activated */
940 psmouse_activate(parent);
947 static int psmouse_reconnect(struct serio *serio)
949 struct psmouse *psmouse = serio_get_drvdata(serio);
950 struct psmouse *parent = NULL;
951 struct serio_driver *drv = serio->drv;
954 if (!drv || !psmouse) {
955 printk(KERN_DEBUG "psmouse: reconnect request, but serio is disconnected, ignoring...\n");
961 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
962 parent = serio_get_drvdata(serio->parent);
963 psmouse_deactivate(parent);
966 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
968 if (psmouse->reconnect) {
969 if (psmouse->reconnect(psmouse))
971 } else if (psmouse_probe(psmouse) < 0 ||
972 psmouse->type != psmouse_extensions(psmouse, psmouse_max_proto, 0))
975 /* ok, the device type (and capabilities) match the old one,
976 * we can continue using it, complete intialization
978 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
980 psmouse_initialize(psmouse);
982 if (parent && parent->pt_activate)
983 parent->pt_activate(parent);
985 psmouse_activate(psmouse);
989 /* If this is a pass-through port the parent waits to be activated */
991 psmouse_activate(parent);
997 static struct serio_device_id psmouse_serio_ids[] = {
1005 .type = SERIO_PS_PSTHRU,
1013 MODULE_DEVICE_TABLE(serio, psmouse_serio_ids);
1015 static struct serio_driver psmouse_drv = {
1019 .description = DRIVER_DESC,
1020 .id_table = psmouse_serio_ids,
1021 .interrupt = psmouse_interrupt,
1022 .connect = psmouse_connect,
1023 .reconnect = psmouse_reconnect,
1024 .disconnect = psmouse_disconnect,
1025 .cleanup = psmouse_cleanup,
1028 ssize_t psmouse_attr_show_helper(struct device *dev, char *buf,
1029 ssize_t (*handler)(struct psmouse *, char *))
1031 struct serio *serio = to_serio_port(dev);
1034 retval = serio_pin_driver(serio);
1038 if (serio->drv != &psmouse_drv) {
1043 retval = handler(serio_get_drvdata(serio), buf);
1046 serio_unpin_driver(serio);
1050 ssize_t psmouse_attr_set_helper(struct device *dev, const char *buf, size_t count,
1051 ssize_t (*handler)(struct psmouse *, const char *, size_t))
1053 struct serio *serio = to_serio_port(dev);
1054 struct psmouse *psmouse = serio_get_drvdata(serio);
1055 struct psmouse *parent = NULL;
1058 retval = serio_pin_driver(serio);
1062 if (serio->drv != &psmouse_drv) {
1067 retval = down_interruptible(&psmouse_sem);
1071 if (psmouse->state == PSMOUSE_IGNORE) {
1076 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1077 parent = serio_get_drvdata(serio->parent);
1078 psmouse_deactivate(parent);
1081 psmouse_deactivate(psmouse);
1083 retval = handler(psmouse, buf, count);
1085 if (retval != -ENODEV)
1086 psmouse_activate(psmouse);
1089 psmouse_activate(parent);
1094 serio_unpin_driver(serio);
1098 static ssize_t psmouse_attr_show_protocol(struct psmouse *psmouse, char *buf)
1100 return sprintf(buf, "%s\n", psmouse_protocol_by_type(psmouse->type)->name);
1103 static ssize_t psmouse_attr_set_protocol(struct psmouse *psmouse, const char *buf, size_t count)
1105 struct serio *serio = psmouse->ps2dev.serio;
1106 struct psmouse *parent = NULL;
1107 struct psmouse_protocol *proto;
1110 if (!(proto = psmouse_protocol_by_name(buf, count)))
1113 if (psmouse->type == proto->type)
1116 while (serio->child) {
1118 printk(KERN_WARNING "psmouse: failed to destroy child port, protocol change aborted.\n");
1123 serio_unpin_driver(serio);
1124 serio_unregister_child_port(serio);
1125 serio_pin_driver_uninterruptible(serio);
1128 if (serio->drv != &psmouse_drv)
1131 if (psmouse->type == proto->type)
1132 return count; /* switched by other thread */
1135 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1136 parent = serio_get_drvdata(serio->parent);
1137 if (parent->pt_deactivate)
1138 parent->pt_deactivate(parent);
1141 if (psmouse->disconnect)
1142 psmouse->disconnect(psmouse);
1144 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
1145 input_unregister_device(&psmouse->dev);
1147 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
1149 if (psmouse_switch_protocol(psmouse, proto) < 0) {
1150 psmouse_reset(psmouse);
1151 /* default to PSMOUSE_PS2 */
1152 psmouse_switch_protocol(psmouse, &psmouse_protocols[0]);
1155 psmouse_initialize(psmouse);
1156 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1158 input_register_device(&psmouse->dev);
1159 printk(KERN_INFO "input: %s on %s\n", psmouse->devname, serio->phys);
1161 if (parent && parent->pt_activate)
1162 parent->pt_activate(parent);
1167 static ssize_t psmouse_attr_show_rate(struct psmouse *psmouse, char *buf)
1169 return sprintf(buf, "%d\n", psmouse->rate);
1172 static ssize_t psmouse_attr_set_rate(struct psmouse *psmouse, const char *buf, size_t count)
1174 unsigned long value;
1177 value = simple_strtoul(buf, &rest, 10);
1181 psmouse->set_rate(psmouse, value);
1185 static ssize_t psmouse_attr_show_resolution(struct psmouse *psmouse, char *buf)
1187 return sprintf(buf, "%d\n", psmouse->resolution);
1190 static ssize_t psmouse_attr_set_resolution(struct psmouse *psmouse, const char *buf, size_t count)
1192 unsigned long value;
1195 value = simple_strtoul(buf, &rest, 10);
1199 psmouse->set_resolution(psmouse, value);
1203 static ssize_t psmouse_attr_show_resetafter(struct psmouse *psmouse, char *buf)
1205 return sprintf(buf, "%d\n", psmouse->resetafter);
1208 static ssize_t psmouse_attr_set_resetafter(struct psmouse *psmouse, const char *buf, size_t count)
1210 unsigned long value;
1213 value = simple_strtoul(buf, &rest, 10);
1217 psmouse->resetafter = value;
1221 static int psmouse_set_maxproto(const char *val, struct kernel_param *kp)
1223 struct psmouse_protocol *proto;
1228 proto = psmouse_protocol_by_name(val, strlen(val));
1230 if (!proto || !proto->maxproto)
1233 *((unsigned int *)kp->arg) = proto->type;
1238 static int psmouse_get_maxproto(char *buffer, struct kernel_param *kp)
1240 int type = *((unsigned int *)kp->arg);
1242 return sprintf(buffer, "%s\n", psmouse_protocol_by_type(type)->name);
1245 static int __init psmouse_init(void)
1247 serio_register_driver(&psmouse_drv);
1251 static void __exit psmouse_exit(void)
1253 serio_unregister_driver(&psmouse_drv);
1256 module_init(psmouse_init);
1257 module_exit(psmouse_exit);