4 * Copyright (c) 1999-2002 Vojtech Pavlik
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License version 2 as published by
10 * the Free Software Foundation.
13 #include <linux/delay.h>
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/slab.h>
17 #include <linux/interrupt.h>
18 #include <linux/input.h>
19 #include <linux/serio.h>
20 #include <linux/init.h>
22 #include "synaptics.h"
23 #include "logips2pp.h"
25 #define DRIVER_DESC "PS/2 mouse driver"
27 MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
28 MODULE_DESCRIPTION(DRIVER_DESC);
29 MODULE_LICENSE("GPL");
31 static char *psmouse_proto;
32 static unsigned int psmouse_max_proto = -1U;
33 module_param_named(proto, psmouse_proto, charp, 0);
34 MODULE_PARM_DESC(proto, "Highest protocol extension to probe (bare, imps, exps). Useful for KVM switches.");
36 int psmouse_resolution = 200;
37 module_param_named(resolution, psmouse_resolution, uint, 0);
38 MODULE_PARM_DESC(resolution, "Resolution, in dpi.");
40 unsigned int psmouse_rate = 100;
41 module_param_named(rate, psmouse_rate, uint, 0);
42 MODULE_PARM_DESC(rate, "Report rate, in reports per second.");
44 int psmouse_smartscroll = 1;
45 module_param_named(smartscroll, psmouse_smartscroll, bool, 0);
46 MODULE_PARM_DESC(smartscroll, "Logitech Smartscroll autorepeat, 1 = enabled (default), 0 = disabled.");
48 static unsigned int psmouse_resetafter;
49 module_param_named(resetafter, psmouse_resetafter, uint, 0);
50 MODULE_PARM_DESC(resetafter, "Reset device after so many bad packets (0 = never).");
52 __obsolete_setup("psmouse_noext");
53 __obsolete_setup("psmouse_resolution=");
54 __obsolete_setup("psmouse_smartscroll=");
55 __obsolete_setup("psmouse_resetafter=");
56 __obsolete_setup("psmouse_rate=");
58 static char *psmouse_protocols[] = { "None", "PS/2", "PS2++", "PS2T++", "GenPS/2", "ImPS/2", "ImExPS/2", "SynPS/2"};
61 * psmouse_process_byte() analyzes the PS/2 data stream and reports
62 * relevant events to the input module once full packet has arrived.
65 static psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse, struct pt_regs *regs)
67 struct input_dev *dev = &psmouse->dev;
68 unsigned char *packet = psmouse->packet;
70 if (psmouse->pktcnt < 3 + (psmouse->type >= PSMOUSE_GENPS))
71 return PSMOUSE_GOOD_DATA;
74 * Full packet accumulated, process it
77 input_regs(dev, regs);
80 * The PS2++ protocol is a little bit complex
83 if (psmouse->type == PSMOUSE_PS2PP || psmouse->type == PSMOUSE_PS2TPP)
84 ps2pp_process_packet(psmouse);
87 * Scroll wheel on IntelliMice, scroll buttons on NetMice
90 if (psmouse->type == PSMOUSE_IMPS || psmouse->type == PSMOUSE_GENPS)
91 input_report_rel(dev, REL_WHEEL, -(signed char) packet[3]);
94 * Scroll wheel and buttons on IntelliMouse Explorer
97 if (psmouse->type == PSMOUSE_IMEX) {
98 input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 8) - (int) (packet[3] & 7));
99 input_report_key(dev, BTN_SIDE, (packet[3] >> 4) & 1);
100 input_report_key(dev, BTN_EXTRA, (packet[3] >> 5) & 1);
104 * Extra buttons on Genius NewNet 3D
107 if (psmouse->type == PSMOUSE_GENPS) {
108 input_report_key(dev, BTN_SIDE, (packet[0] >> 6) & 1);
109 input_report_key(dev, BTN_EXTRA, (packet[0] >> 7) & 1);
116 input_report_key(dev, BTN_LEFT, packet[0] & 1);
117 input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1);
118 input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1);
120 input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0);
121 input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0);
125 return PSMOUSE_FULL_PACKET;
129 * psmouse_interrupt() handles incoming characters, either gathering them into
130 * packets or passing them to the command routine as command output.
133 static irqreturn_t psmouse_interrupt(struct serio *serio,
134 unsigned char data, unsigned int flags, struct pt_regs *regs)
136 struct psmouse *psmouse = serio->private;
139 if (psmouse->state == PSMOUSE_IGNORE)
142 if (flags & (SERIO_PARITY|SERIO_TIMEOUT)) {
143 if (psmouse->state == PSMOUSE_ACTIVATED)
144 printk(KERN_WARNING "psmouse.c: bad data from KBC -%s%s\n",
145 flags & SERIO_TIMEOUT ? " timeout" : "",
146 flags & SERIO_PARITY ? " bad parity" : "");
148 clear_bit(PSMOUSE_FLAG_ACK, &psmouse->flags);
149 clear_bit(PSMOUSE_FLAG_CMD, &psmouse->flags);
150 wake_up_interruptible(&psmouse->wait);
154 if (test_bit(PSMOUSE_FLAG_ACK, &psmouse->flags)) {
156 case PSMOUSE_RET_ACK:
160 case PSMOUSE_RET_NAK:
165 * Workaround for mice which don't ACK the Get ID command.
166 * These are valid mouse IDs that we recognize.
171 if (test_bit(PSMOUSE_FLAG_WAITID, &psmouse->flags)) {
180 if (!psmouse->nak && psmouse->cmdcnt) {
181 set_bit(PSMOUSE_FLAG_CMD, &psmouse->flags);
182 set_bit(PSMOUSE_FLAG_CMD1, &psmouse->flags);
184 clear_bit(PSMOUSE_FLAG_ACK, &psmouse->flags);
185 wake_up_interruptible(&psmouse->wait);
187 if (data == PSMOUSE_RET_ACK || data == PSMOUSE_RET_NAK)
191 if (test_bit(PSMOUSE_FLAG_CMD, &psmouse->flags)) {
193 psmouse->cmdbuf[--psmouse->cmdcnt] = data;
195 if (test_and_clear_bit(PSMOUSE_FLAG_CMD1, &psmouse->flags) && psmouse->cmdcnt)
196 wake_up_interruptible(&psmouse->wait);
198 if (!psmouse->cmdcnt) {
199 clear_bit(PSMOUSE_FLAG_CMD, &psmouse->flags);
200 wake_up_interruptible(&psmouse->wait);
205 if (psmouse->state == PSMOUSE_INITIALIZING)
208 if (psmouse->state == PSMOUSE_ACTIVATED &&
209 psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) {
210 printk(KERN_WARNING "psmouse.c: %s at %s lost synchronization, throwing %d bytes away.\n",
211 psmouse->name, psmouse->phys, psmouse->pktcnt);
215 psmouse->last = jiffies;
216 psmouse->packet[psmouse->pktcnt++] = data;
218 if (psmouse->packet[0] == PSMOUSE_RET_BAT) {
219 if (psmouse->pktcnt == 1)
222 if (psmouse->pktcnt == 2) {
223 if (psmouse->packet[1] == PSMOUSE_RET_ID) {
224 psmouse->state = PSMOUSE_IGNORE;
225 serio_reconnect(serio);
228 if (psmouse->type == PSMOUSE_SYNAPTICS) {
229 /* neither 0xAA nor 0x00 are valid first bytes
230 * for a packet in absolute mode
238 rc = psmouse->protocol_handler(psmouse, regs);
241 case PSMOUSE_BAD_DATA:
242 printk(KERN_WARNING "psmouse.c: %s at %s lost sync at byte %d\n",
243 psmouse->name, psmouse->phys, psmouse->pktcnt);
246 if (++psmouse->out_of_sync == psmouse_resetafter) {
247 psmouse->state = PSMOUSE_IGNORE;
248 printk(KERN_NOTICE "psmouse.c: issuing reconnect request\n");
249 serio_reconnect(psmouse->serio);
253 case PSMOUSE_FULL_PACKET:
255 if (psmouse->out_of_sync) {
256 psmouse->out_of_sync = 0;
257 printk(KERN_NOTICE "psmouse.c: %s at %s - driver resynched.\n",
258 psmouse->name, psmouse->phys);
262 case PSMOUSE_GOOD_DATA:
270 * psmouse_sendbyte() sends a byte to the mouse, and waits for acknowledge.
271 * It doesn't handle retransmission, though it could - because when there would
272 * be need for retransmissions, the mouse has to be replaced anyway.
274 * psmouse_sendbyte() can only be called from a process context
277 static int psmouse_sendbyte(struct psmouse *psmouse, unsigned char byte)
280 set_bit(PSMOUSE_FLAG_ACK, &psmouse->flags);
282 if (serio_write(psmouse->serio, byte) == 0)
283 wait_event_interruptible_timeout(psmouse->wait,
284 !test_bit(PSMOUSE_FLAG_ACK, &psmouse->flags),
285 msecs_to_jiffies(200));
287 clear_bit(PSMOUSE_FLAG_ACK, &psmouse->flags);
288 return -psmouse->nak;
292 * psmouse_command() sends a command and its parameters to the mouse,
293 * then waits for the response and puts it in the param array.
295 * psmouse_command() can only be called from a process context
298 int psmouse_command(struct psmouse *psmouse, unsigned char *param, int command)
301 int send = (command >> 12) & 0xf;
302 int receive = (command >> 8) & 0xf;
306 timeout = msecs_to_jiffies(command == PSMOUSE_CMD_RESET_BAT ? 4000 : 500);
308 clear_bit(PSMOUSE_FLAG_CMD, &psmouse->flags);
309 if (command == PSMOUSE_CMD_GETID)
310 set_bit(PSMOUSE_FLAG_WAITID, &psmouse->flags);
312 if (receive && param)
313 for (i = 0; i < receive; i++)
314 psmouse->cmdbuf[(receive - 1) - i] = param[i];
316 psmouse->cmdcnt = receive;
319 if (psmouse_sendbyte(psmouse, command & 0xff))
322 for (i = 0; i < send; i++)
323 if (psmouse_sendbyte(psmouse, param[i]))
326 timeout = wait_event_interruptible_timeout(psmouse->wait,
327 !test_bit(PSMOUSE_FLAG_CMD1, &psmouse->flags), timeout);
329 if (psmouse->cmdcnt && timeout > 0) {
330 if (command == PSMOUSE_CMD_RESET_BAT && jiffies_to_msecs(timeout) > 100)
331 timeout = msecs_to_jiffies(100);
333 if (command == PSMOUSE_CMD_GETID &&
334 psmouse->cmdbuf[receive - 1] != 0xab && psmouse->cmdbuf[receive - 1] != 0xac) {
336 * Device behind the port is not a keyboard
337 * so we don't need to wait for the 2nd byte
340 clear_bit(PSMOUSE_FLAG_CMD, &psmouse->flags);
344 wait_event_interruptible_timeout(psmouse->wait,
345 !test_bit(PSMOUSE_FLAG_CMD, &psmouse->flags), timeout);
349 for (i = 0; i < receive; i++)
350 param[i] = psmouse->cmdbuf[(receive - 1) - i];
352 if (psmouse->cmdcnt && (command != PSMOUSE_CMD_RESET_BAT || psmouse->cmdcnt != 1))
358 clear_bit(PSMOUSE_FLAG_CMD, &psmouse->flags);
359 clear_bit(PSMOUSE_FLAG_CMD1, &psmouse->flags);
360 clear_bit(PSMOUSE_FLAG_WAITID, &psmouse->flags);
365 * psmouse_sliced_command() sends an extended PS/2 command to the mouse
366 * using sliced syntax, understood by advanced devices, such as Logitech
367 * or Synaptics touchpads. The command is encoded as:
368 * 0xE6 0xE8 rr 0xE8 ss 0xE8 tt 0xE8 uu where (rr*64)+(ss*16)+(tt*4)+uu
371 int psmouse_sliced_command(struct psmouse *psmouse, unsigned char command)
375 if (psmouse_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11))
378 for (i = 6; i >= 0; i -= 2) {
379 unsigned char d = (command >> i) & 3;
380 if (psmouse_command(psmouse, &d, PSMOUSE_CMD_SETRES))
389 * psmouse_reset() resets the mouse into power-on state.
391 int psmouse_reset(struct psmouse *psmouse)
393 unsigned char param[2];
395 if (psmouse_command(psmouse, param, PSMOUSE_CMD_RESET_BAT))
398 if (param[0] != PSMOUSE_RET_BAT && param[1] != PSMOUSE_RET_ID)
406 * Genius NetMouse magic init.
408 static int genius_detect(struct psmouse *psmouse)
410 unsigned char param[4];
413 psmouse_command(psmouse, param, PSMOUSE_CMD_SETRES);
414 psmouse_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11);
415 psmouse_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11);
416 psmouse_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11);
417 psmouse_command(psmouse, param, PSMOUSE_CMD_GETINFO);
419 return param[0] == 0x00 && param[1] == 0x33 && param[2] == 0x55;
423 * IntelliMouse magic init.
425 static int intellimouse_detect(struct psmouse *psmouse)
427 unsigned char param[2];
430 psmouse_command(psmouse, param, PSMOUSE_CMD_SETRATE);
432 psmouse_command(psmouse, param, PSMOUSE_CMD_SETRATE);
434 psmouse_command(psmouse, param, PSMOUSE_CMD_SETRATE);
435 psmouse_command(psmouse, param, PSMOUSE_CMD_GETID);
437 return param[0] == 3;
441 * Try IntelliMouse/Explorer magic init.
443 static int im_explorer_detect(struct psmouse *psmouse)
445 unsigned char param[2];
447 intellimouse_detect(psmouse);
450 psmouse_command(psmouse, param, PSMOUSE_CMD_SETRATE);
452 psmouse_command(psmouse, param, PSMOUSE_CMD_SETRATE);
454 psmouse_command(psmouse, param, PSMOUSE_CMD_SETRATE);
455 psmouse_command(psmouse, param, PSMOUSE_CMD_GETID);
457 return param[0] == 4;
461 * psmouse_extensions() probes for any extensions to the basic PS/2 protocol
462 * the mouse may have.
465 static int psmouse_extensions(struct psmouse *psmouse,
466 unsigned int max_proto, int set_properties)
468 int synaptics_hardware = 0;
471 * Try Synaptics TouchPad
473 if (max_proto > PSMOUSE_PS2 && synaptics_detect(psmouse)) {
474 synaptics_hardware = 1;
476 if (set_properties) {
477 psmouse->vendor = "Synaptics";
478 psmouse->name = "TouchPad";
481 if (max_proto > PSMOUSE_IMEX) {
482 if (!set_properties || synaptics_init(psmouse) == 0)
483 return PSMOUSE_SYNAPTICS;
485 * Some Synaptics touchpads can emulate extended protocols (like IMPS/2).
486 * Unfortunately Logitech/Genius probes confuse some firmware versions so
487 * we'll have to skip them.
489 max_proto = PSMOUSE_IMEX;
492 * Make sure that touchpad is in relative mode, gestures (taps) are enabled
494 synaptics_reset(psmouse);
497 if (max_proto > PSMOUSE_IMEX && genius_detect(psmouse)) {
499 if (set_properties) {
500 set_bit(BTN_EXTRA, psmouse->dev.keybit);
501 set_bit(BTN_SIDE, psmouse->dev.keybit);
502 set_bit(REL_WHEEL, psmouse->dev.relbit);
503 psmouse->vendor = "Genius";
504 psmouse->name = "Wheel Mouse";
507 return PSMOUSE_GENPS;
510 if (max_proto > PSMOUSE_IMEX) {
511 int type = ps2pp_init(psmouse, set_properties);
512 if (type > PSMOUSE_PS2)
516 if (max_proto >= PSMOUSE_IMEX && im_explorer_detect(psmouse)) {
518 if (set_properties) {
519 set_bit(REL_WHEEL, psmouse->dev.relbit);
520 set_bit(BTN_SIDE, psmouse->dev.keybit);
521 set_bit(BTN_EXTRA, psmouse->dev.keybit);
523 psmouse->name = "Explorer Mouse";
529 if (max_proto >= PSMOUSE_IMPS && intellimouse_detect(psmouse)) {
531 if (set_properties) {
532 set_bit(REL_WHEEL, psmouse->dev.relbit);
534 psmouse->name = "Wheel Mouse";
541 * Okay, all failed, we have a standard mouse here. The number of the buttons
542 * is still a question, though. We assume 3.
544 if (synaptics_hardware) {
546 * We detected Synaptics hardware but it did not respond to IMPS/2 probes.
547 * We need to reset the touchpad because if there is a track point on the
548 * pass through port it could get disabled while probing for protocol
551 psmouse_reset(psmouse);
552 psmouse_command(psmouse, NULL, PSMOUSE_CMD_RESET_DIS);
559 * psmouse_probe() probes for a PS/2 mouse.
562 static int psmouse_probe(struct psmouse *psmouse)
564 unsigned char param[2];
567 * First, we check if it's a mouse. It should send 0x00 or 0x03
568 * in case of an IntelliMouse in 4-byte mode or 0x04 for IM Explorer.
573 if (psmouse_command(psmouse, param, PSMOUSE_CMD_GETID))
576 if (param[0] != 0x00 && param[0] != 0x03 && param[0] != 0x04)
580 * Then we reset and disable the mouse so that it doesn't generate events.
583 if (psmouse_command(psmouse, NULL, PSMOUSE_CMD_RESET_DIS))
584 printk(KERN_WARNING "psmouse.c: Failed to reset mouse on %s\n", psmouse->serio->phys);
590 * Here we set the mouse resolution.
593 static void psmouse_set_resolution(struct psmouse *psmouse)
595 unsigned char param[1];
597 if (psmouse->type == PSMOUSE_PS2PP && psmouse_resolution > 400) {
598 ps2pp_set_800dpi(psmouse);
602 if (!psmouse_resolution || psmouse_resolution >= 200)
604 else if (psmouse_resolution >= 100)
606 else if (psmouse_resolution >= 50)
608 else if (psmouse_resolution)
611 psmouse_command(psmouse, param, PSMOUSE_CMD_SETRES);
615 * Here we set the mouse report rate.
618 static void psmouse_set_rate(struct psmouse *psmouse)
620 unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 };
623 while (rates[i] > psmouse_rate) i++;
624 psmouse_command(psmouse, rates + i, PSMOUSE_CMD_SETRATE);
628 * psmouse_initialize() initializes the mouse to a sane state.
631 static void psmouse_initialize(struct psmouse *psmouse)
633 unsigned char param[2];
636 * We set the mouse report rate, resolution and scaling.
639 if (psmouse_max_proto != PSMOUSE_PS2) {
640 psmouse_set_rate(psmouse);
641 psmouse_set_resolution(psmouse);
642 psmouse_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11);
646 * We set the mouse into streaming mode.
649 psmouse_command(psmouse, param, PSMOUSE_CMD_SETSTREAM);
653 * psmouse_set_state() sets new psmouse state and resets all flags and
654 * counters while holding serio lock so fighting with interrupt handler
658 static void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state)
660 serio_pause_rx(psmouse->serio);
661 psmouse->state = new_state;
662 psmouse->pktcnt = psmouse->cmdcnt = psmouse->out_of_sync = 0;
664 serio_continue_rx(psmouse->serio);
668 * psmouse_activate() enables the mouse so that we get motion reports from it.
671 static void psmouse_activate(struct psmouse *psmouse)
673 if (psmouse_command(psmouse, NULL, PSMOUSE_CMD_ENABLE))
674 printk(KERN_WARNING "psmouse.c: Failed to enable mouse on %s\n", psmouse->serio->phys);
676 psmouse_set_state(psmouse, PSMOUSE_ACTIVATED);
681 * psmouse_deactivate() puts the mouse into poll mode so that we don't get motion
682 * reports from it unless we explicitely request it.
685 static void psmouse_deactivate(struct psmouse *psmouse)
687 if (psmouse_command(psmouse, NULL, PSMOUSE_CMD_DISABLE))
688 printk(KERN_WARNING "psmouse.c: Failed to deactivate mouse on %s\n", psmouse->serio->phys);
690 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
695 * psmouse_cleanup() resets the mouse into power-on state.
698 static void psmouse_cleanup(struct serio *serio)
700 struct psmouse *psmouse = serio->private;
702 psmouse_reset(psmouse);
706 * psmouse_disconnect() closes and frees.
709 static void psmouse_disconnect(struct serio *serio)
711 struct psmouse *psmouse, *parent;
713 psmouse = serio->private;
714 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
716 if (serio->parent && (serio->type & SERIO_TYPE) == SERIO_PS_PSTHRU) {
717 parent = serio->parent->private;
718 if (parent->pt_deactivate)
719 parent->pt_deactivate(parent);
722 if (psmouse->disconnect)
723 psmouse->disconnect(psmouse);
725 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
727 input_unregister_device(&psmouse->dev);
733 * psmouse_connect() is a callback from the serio module when
734 * an unhandled serio port is found.
736 static void psmouse_connect(struct serio *serio, struct serio_driver *drv)
738 struct psmouse *psmouse, *parent = NULL;
740 if ((serio->type & SERIO_TYPE) != SERIO_8042 &&
741 (serio->type & SERIO_TYPE) != SERIO_PS_PSTHRU)
745 * If this is a pass-through port deactivate parent so the device
746 * connected to this port can be successfully identified
748 if (serio->parent && (serio->type & SERIO_TYPE) == SERIO_PS_PSTHRU) {
749 parent = serio->parent->private;
750 psmouse_deactivate(parent);
753 if (!(psmouse = kmalloc(sizeof(struct psmouse), GFP_KERNEL)))
756 memset(psmouse, 0, sizeof(struct psmouse));
758 init_waitqueue_head(&psmouse->wait);
759 init_input_dev(&psmouse->dev);
760 psmouse->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
761 psmouse->dev.keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
762 psmouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y);
763 psmouse->serio = serio;
764 psmouse->dev.private = psmouse;
765 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
767 serio->private = psmouse;
768 if (serio_open(serio, drv)) {
770 serio->private = NULL;
774 if (psmouse_probe(psmouse) < 0) {
777 serio->private = NULL;
781 psmouse->type = psmouse_extensions(psmouse, psmouse_max_proto, 1);
782 if (!psmouse->vendor)
783 psmouse->vendor = "Generic";
785 psmouse->name = "Mouse";
786 if (!psmouse->protocol_handler)
787 psmouse->protocol_handler = psmouse_process_byte;
789 sprintf(psmouse->devname, "%s %s %s",
790 psmouse_protocols[psmouse->type], psmouse->vendor, psmouse->name);
791 sprintf(psmouse->phys, "%s/input0",
794 psmouse->dev.name = psmouse->devname;
795 psmouse->dev.phys = psmouse->phys;
796 psmouse->dev.id.bustype = BUS_I8042;
797 psmouse->dev.id.vendor = 0x0002;
798 psmouse->dev.id.product = psmouse->type;
799 psmouse->dev.id.version = psmouse->model;
801 input_register_device(&psmouse->dev);
803 printk(KERN_INFO "input: %s on %s\n", psmouse->devname, serio->phys);
805 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
807 psmouse_initialize(psmouse);
809 if (parent && parent->pt_activate)
810 parent->pt_activate(parent);
814 * Nothing to be done here, serio core will detect that
815 * the driver set serio->child and will register it for us.
817 printk(KERN_INFO "serio: %s port at %s\n", serio->child->name, psmouse->phys);
820 psmouse_activate(psmouse);
823 /* If this is a pass-through port the parent awaits to be activated */
825 psmouse_activate(parent);
829 static int psmouse_reconnect(struct serio *serio)
831 struct psmouse *psmouse = serio->private;
832 struct psmouse *parent = NULL;
833 struct serio_driver *drv = serio->drv;
836 if (!drv || !psmouse) {
837 printk(KERN_DEBUG "psmouse: reconnect request, but serio is disconnected, ignoring...\n");
841 if (serio->parent && (serio->type & SERIO_TYPE) == SERIO_PS_PSTHRU) {
842 parent = serio->parent->private;
843 psmouse_deactivate(parent);
846 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
848 if (psmouse->reconnect) {
849 if (psmouse->reconnect(psmouse))
851 } else if (psmouse_probe(psmouse) < 0 ||
852 psmouse->type != psmouse_extensions(psmouse, psmouse_max_proto, 0))
855 /* ok, the device type (and capabilities) match the old one,
856 * we can continue using it, complete intialization
858 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
860 psmouse_initialize(psmouse);
862 if (parent && parent->pt_activate)
863 parent->pt_activate(parent);
865 psmouse_activate(psmouse);
869 /* If this is a pass-through port the parent waits to be activated */
871 psmouse_activate(parent);
877 static struct serio_driver psmouse_drv = {
881 .description = DRIVER_DESC,
882 .interrupt = psmouse_interrupt,
883 .connect = psmouse_connect,
884 .reconnect = psmouse_reconnect,
885 .disconnect = psmouse_disconnect,
886 .cleanup = psmouse_cleanup,
889 static inline void psmouse_parse_proto(void)
892 if (!strcmp(psmouse_proto, "bare"))
893 psmouse_max_proto = PSMOUSE_PS2;
894 else if (!strcmp(psmouse_proto, "imps"))
895 psmouse_max_proto = PSMOUSE_IMPS;
896 else if (!strcmp(psmouse_proto, "exps"))
897 psmouse_max_proto = PSMOUSE_IMEX;
899 printk(KERN_ERR "psmouse: unknown protocol type '%s'\n", psmouse_proto);
903 int __init psmouse_init(void)
905 psmouse_parse_proto();
906 serio_register_driver(&psmouse_drv);
910 void __exit psmouse_exit(void)
912 serio_unregister_driver(&psmouse_drv);
915 module_init(psmouse_init);
916 module_exit(psmouse_exit);