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"
28 #define DRIVER_DESC "PS/2 mouse driver"
30 MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
31 MODULE_DESCRIPTION(DRIVER_DESC);
32 MODULE_LICENSE("GPL");
34 static char *psmouse_proto;
35 static unsigned int psmouse_max_proto = -1U;
36 module_param_named(proto, psmouse_proto, charp, 0);
37 MODULE_PARM_DESC(proto, "Highest protocol extension to probe (bare, imps, exps). Useful for KVM switches.");
39 static unsigned int psmouse_resolution = 200;
40 module_param_named(resolution, psmouse_resolution, uint, 0);
41 MODULE_PARM_DESC(resolution, "Resolution, in dpi.");
43 static unsigned int psmouse_rate = 100;
44 module_param_named(rate, psmouse_rate, uint, 0);
45 MODULE_PARM_DESC(rate, "Report rate, in reports per second.");
47 static unsigned int psmouse_smartscroll = 1;
48 module_param_named(smartscroll, psmouse_smartscroll, bool, 0);
49 MODULE_PARM_DESC(smartscroll, "Logitech Smartscroll autorepeat, 1 = enabled (default), 0 = disabled.");
51 static unsigned int psmouse_resetafter;
52 module_param_named(resetafter, psmouse_resetafter, uint, 0);
53 MODULE_PARM_DESC(resetafter, "Reset device after so many bad packets (0 = never).");
55 PSMOUSE_DEFINE_ATTR(rate);
56 PSMOUSE_DEFINE_ATTR(resolution);
57 PSMOUSE_DEFINE_ATTR(resetafter);
59 __obsolete_setup("psmouse_noext");
60 __obsolete_setup("psmouse_resolution=");
61 __obsolete_setup("psmouse_smartscroll=");
62 __obsolete_setup("psmouse_resetafter=");
63 __obsolete_setup("psmouse_rate=");
65 static char *psmouse_protocols[] = { "None", "PS/2", "PS2++", "ThinkPS/2", "GenPS/2", "ImPS/2", "ImExPS/2", "SynPS/2", "AlpsPS/2" };
68 * psmouse_process_byte() analyzes the PS/2 data stream and reports
69 * relevant events to the input module once full packet has arrived.
72 static psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse, struct pt_regs *regs)
74 struct input_dev *dev = &psmouse->dev;
75 unsigned char *packet = psmouse->packet;
77 if (psmouse->pktcnt < psmouse->pktsize)
78 return PSMOUSE_GOOD_DATA;
81 * Full packet accumulated, process it
84 input_regs(dev, regs);
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);
113 * Extra button on ThinkingMouse
115 if (psmouse->type == PSMOUSE_THINKPS) {
116 input_report_key(dev, BTN_EXTRA, (packet[0] >> 3) & 1);
117 /* Without this bit of weirdness moving up gives wildly high Y changes. */
118 packet[1] |= (packet[0] & 0x40) << 1;
125 input_report_key(dev, BTN_LEFT, packet[0] & 1);
126 input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1);
127 input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1);
129 input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0);
130 input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0);
134 return PSMOUSE_FULL_PACKET;
138 * psmouse_interrupt() handles incoming characters, either gathering them into
139 * packets or passing them to the command routine as command output.
142 static irqreturn_t psmouse_interrupt(struct serio *serio,
143 unsigned char data, unsigned int flags, struct pt_regs *regs)
145 struct psmouse *psmouse = serio->private;
148 if (psmouse->state == PSMOUSE_IGNORE)
151 if (flags & (SERIO_PARITY|SERIO_TIMEOUT)) {
152 if (psmouse->state == PSMOUSE_ACTIVATED)
153 printk(KERN_WARNING "psmouse.c: bad data from KBC -%s%s\n",
154 flags & SERIO_TIMEOUT ? " timeout" : "",
155 flags & SERIO_PARITY ? " bad parity" : "");
156 ps2_cmd_aborted(&psmouse->ps2dev);
160 if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_ACK))
161 if (ps2_handle_ack(&psmouse->ps2dev, data))
164 if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_CMD))
165 if (ps2_handle_response(&psmouse->ps2dev, data))
168 if (psmouse->state == PSMOUSE_INITIALIZING)
171 if (psmouse->state == PSMOUSE_ACTIVATED &&
172 psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) {
173 printk(KERN_WARNING "psmouse.c: %s at %s lost synchronization, throwing %d bytes away.\n",
174 psmouse->name, psmouse->phys, psmouse->pktcnt);
178 psmouse->last = jiffies;
179 psmouse->packet[psmouse->pktcnt++] = data;
181 if (psmouse->packet[0] == PSMOUSE_RET_BAT) {
182 if (psmouse->pktcnt == 1)
185 if (psmouse->pktcnt == 2) {
186 if (psmouse->packet[1] == PSMOUSE_RET_ID) {
187 psmouse->state = PSMOUSE_IGNORE;
188 serio_reconnect(serio);
191 if (psmouse->type == PSMOUSE_SYNAPTICS) {
192 /* neither 0xAA nor 0x00 are valid first bytes
193 * for a packet in absolute mode
201 rc = psmouse->protocol_handler(psmouse, regs);
204 case PSMOUSE_BAD_DATA:
205 printk(KERN_WARNING "psmouse.c: %s at %s lost sync at byte %d\n",
206 psmouse->name, psmouse->phys, psmouse->pktcnt);
209 if (++psmouse->out_of_sync == psmouse->resetafter) {
210 psmouse->state = PSMOUSE_IGNORE;
211 printk(KERN_NOTICE "psmouse.c: issuing reconnect request\n");
212 serio_reconnect(psmouse->ps2dev.serio);
216 case PSMOUSE_FULL_PACKET:
218 if (psmouse->out_of_sync) {
219 psmouse->out_of_sync = 0;
220 printk(KERN_NOTICE "psmouse.c: %s at %s - driver resynched.\n",
221 psmouse->name, psmouse->phys);
225 case PSMOUSE_GOOD_DATA:
234 * psmouse_sliced_command() sends an extended PS/2 command to the mouse
235 * using sliced syntax, understood by advanced devices, such as Logitech
236 * or Synaptics touchpads. The command is encoded as:
237 * 0xE6 0xE8 rr 0xE8 ss 0xE8 tt 0xE8 uu where (rr*64)+(ss*16)+(tt*4)+uu
240 int psmouse_sliced_command(struct psmouse *psmouse, unsigned char command)
244 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11))
247 for (i = 6; i >= 0; i -= 2) {
248 unsigned char d = (command >> i) & 3;
249 if (ps2_command(&psmouse->ps2dev, &d, PSMOUSE_CMD_SETRES))
258 * psmouse_reset() resets the mouse into power-on state.
260 int psmouse_reset(struct psmouse *psmouse)
262 unsigned char param[2];
264 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_RESET_BAT))
267 if (param[0] != PSMOUSE_RET_BAT && param[1] != PSMOUSE_RET_ID)
275 * Genius NetMouse magic init.
277 static int genius_detect(struct psmouse *psmouse, int set_properties)
279 struct ps2dev *ps2dev = &psmouse->ps2dev;
280 unsigned char param[4];
283 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
284 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
285 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
286 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
287 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
289 if (param[0] != 0x00 || param[1] != 0x33 || param[2] != 0x55)
292 if (set_properties) {
293 set_bit(BTN_EXTRA, psmouse->dev.keybit);
294 set_bit(BTN_SIDE, psmouse->dev.keybit);
295 set_bit(REL_WHEEL, psmouse->dev.relbit);
297 psmouse->vendor = "Genius";
298 psmouse->name = "Wheel Mouse";
299 psmouse->pktsize = 4;
306 * IntelliMouse magic init.
308 static int intellimouse_detect(struct psmouse *psmouse, int set_properties)
310 struct ps2dev *ps2dev = &psmouse->ps2dev;
311 unsigned char param[2];
314 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
316 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
318 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
319 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
324 if (set_properties) {
325 set_bit(REL_WHEEL, psmouse->dev.relbit);
327 if (!psmouse->vendor) psmouse->vendor = "Generic";
328 if (!psmouse->name) psmouse->name = "Wheel Mouse";
329 psmouse->pktsize = 4;
336 * Try IntelliMouse/Explorer magic init.
338 static int im_explorer_detect(struct psmouse *psmouse, int set_properties)
340 struct ps2dev *ps2dev = &psmouse->ps2dev;
341 unsigned char param[2];
343 intellimouse_detect(psmouse, 0);
346 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
348 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
350 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
351 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
356 if (set_properties) {
357 set_bit(REL_WHEEL, psmouse->dev.relbit);
358 set_bit(BTN_SIDE, psmouse->dev.keybit);
359 set_bit(BTN_EXTRA, psmouse->dev.keybit);
361 if (!psmouse->vendor) psmouse->vendor = "Generic";
362 if (!psmouse->name) psmouse->name = "Explorer Mouse";
363 psmouse->pktsize = 4;
370 * Kensington ThinkingMouse / ExpertMouse magic init.
372 static int thinking_detect(struct psmouse *psmouse, int set_properties)
374 struct ps2dev *ps2dev = &psmouse->ps2dev;
375 unsigned char param[2];
376 unsigned char seq[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20, 0 };
380 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
382 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
383 for (i = 0; seq[i]; i++)
384 ps2_command(ps2dev, seq + i, PSMOUSE_CMD_SETRATE);
385 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
390 if (set_properties) {
391 set_bit(BTN_EXTRA, psmouse->dev.keybit);
393 psmouse->vendor = "Kensington";
394 psmouse->name = "ThinkingMouse";
401 * Bare PS/2 protocol "detection". Always succeeds.
403 static int ps2bare_detect(struct psmouse *psmouse, int set_properties)
405 if (!psmouse->vendor) psmouse->vendor = "Generic";
406 if (!psmouse->name) psmouse->name = "Mouse";
412 * psmouse_extensions() probes for any extensions to the basic PS/2 protocol
413 * the mouse may have.
416 static int psmouse_extensions(struct psmouse *psmouse,
417 unsigned int max_proto, int set_properties)
419 int synaptics_hardware = 0;
422 * Try Kensington ThinkingMouse (we try first, because synaptics probe
423 * upsets the thinkingmouse).
426 if (max_proto > PSMOUSE_PS2 && thinking_detect(psmouse, set_properties) == 0)
427 return PSMOUSE_THINKPS;
430 * Try Synaptics TouchPad
432 if (max_proto > PSMOUSE_PS2 && synaptics_detect(psmouse, set_properties) == 0) {
433 synaptics_hardware = 1;
435 if (max_proto > PSMOUSE_IMEX) {
436 if (!set_properties || synaptics_init(psmouse) == 0)
437 return PSMOUSE_SYNAPTICS;
439 * Some Synaptics touchpads can emulate extended protocols (like IMPS/2).
440 * Unfortunately Logitech/Genius probes confuse some firmware versions so
441 * we'll have to skip them.
443 max_proto = PSMOUSE_IMEX;
446 * Make sure that touchpad is in relative mode, gestures (taps) are enabled
448 synaptics_reset(psmouse);
454 if (max_proto > PSMOUSE_IMEX) {
455 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
456 if (alps_detect(psmouse, set_properties) == 0) {
457 if (!set_properties || alps_init(psmouse) == 0)
460 * Init failed, try basic relative protocols
462 max_proto = PSMOUSE_IMEX;
466 if (max_proto > PSMOUSE_IMEX && genius_detect(psmouse, set_properties) == 0)
467 return PSMOUSE_GENPS;
469 if (max_proto > PSMOUSE_IMEX && ps2pp_init(psmouse, set_properties) == 0)
470 return PSMOUSE_PS2PP;
473 * Reset to defaults in case the device got confused by extended
476 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
478 if (max_proto >= PSMOUSE_IMEX && im_explorer_detect(psmouse, set_properties) == 0)
481 if (max_proto >= PSMOUSE_IMPS && intellimouse_detect(psmouse, set_properties) == 0)
485 * Okay, all failed, we have a standard mouse here. The number of the buttons
486 * is still a question, though. We assume 3.
488 ps2bare_detect(psmouse, set_properties);
490 if (synaptics_hardware) {
492 * We detected Synaptics hardware but it did not respond to IMPS/2 probes.
493 * We need to reset the touchpad because if there is a track point on the
494 * pass through port it could get disabled while probing for protocol
497 psmouse_reset(psmouse);
498 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
505 * psmouse_probe() probes for a PS/2 mouse.
508 static int psmouse_probe(struct psmouse *psmouse)
510 struct ps2dev *ps2dev = &psmouse->ps2dev;
511 unsigned char param[2];
514 * First, we check if it's a mouse. It should send 0x00 or 0x03
515 * in case of an IntelliMouse in 4-byte mode or 0x04 for IM Explorer.
519 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETID))
522 if (param[0] != 0x00 && param[0] != 0x03 && param[0] != 0x04)
526 * Then we reset and disable the mouse so that it doesn't generate events.
529 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_DIS))
530 printk(KERN_WARNING "psmouse.c: Failed to reset mouse on %s\n", ps2dev->serio->phys);
536 * Here we set the mouse resolution.
539 void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution)
541 unsigned char params[] = { 0, 1, 2, 2, 3 };
543 if (resolution == 0 || resolution > 200)
546 ps2_command(&psmouse->ps2dev, ¶ms[resolution / 50], PSMOUSE_CMD_SETRES);
547 psmouse->resolution = 25 << params[resolution / 50];
551 * Here we set the mouse report rate.
554 static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate)
556 unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 };
559 while (rates[i] > rate) i++;
560 ps2_command(&psmouse->ps2dev, &rates[i], PSMOUSE_CMD_SETRATE);
561 psmouse->rate = rates[i];
565 * psmouse_initialize() initializes the mouse to a sane state.
568 static void psmouse_initialize(struct psmouse *psmouse)
571 * We set the mouse into streaming mode.
574 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM);
577 * We set the mouse report rate, resolution and scaling.
580 if (psmouse_max_proto != PSMOUSE_PS2) {
581 psmouse->set_rate(psmouse, psmouse->rate);
582 psmouse->set_resolution(psmouse, psmouse->resolution);
583 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
588 * psmouse_set_state() sets new psmouse state and resets all flags and
589 * counters while holding serio lock so fighting with interrupt handler
593 static void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state)
595 serio_pause_rx(psmouse->ps2dev.serio);
596 psmouse->state = new_state;
597 psmouse->pktcnt = psmouse->out_of_sync = 0;
598 psmouse->ps2dev.flags = 0;
599 serio_continue_rx(psmouse->ps2dev.serio);
603 * psmouse_activate() enables the mouse so that we get motion reports from it.
606 static void psmouse_activate(struct psmouse *psmouse)
608 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE))
609 printk(KERN_WARNING "psmouse.c: Failed to enable mouse on %s\n",
610 psmouse->ps2dev.serio->phys);
612 psmouse_set_state(psmouse, PSMOUSE_ACTIVATED);
617 * psmouse_deactivate() puts the mouse into poll mode so that we don't get motion
618 * reports from it unless we explicitely request it.
621 static void psmouse_deactivate(struct psmouse *psmouse)
623 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE))
624 printk(KERN_WARNING "psmouse.c: Failed to deactivate mouse on %s\n",
625 psmouse->ps2dev.serio->phys);
627 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
632 * psmouse_cleanup() resets the mouse into power-on state.
635 static void psmouse_cleanup(struct serio *serio)
637 struct psmouse *psmouse = serio->private;
639 psmouse_reset(psmouse);
643 * psmouse_disconnect() closes and frees.
646 static void psmouse_disconnect(struct serio *serio)
648 struct psmouse *psmouse, *parent;
650 device_remove_file(&serio->dev, &psmouse_attr_rate);
651 device_remove_file(&serio->dev, &psmouse_attr_resolution);
652 device_remove_file(&serio->dev, &psmouse_attr_resetafter);
654 psmouse = serio->private;
655 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
657 if (serio->parent && (serio->type & SERIO_TYPE) == SERIO_PS_PSTHRU) {
658 parent = serio->parent->private;
659 if (parent->pt_deactivate)
660 parent->pt_deactivate(parent);
663 if (psmouse->disconnect)
664 psmouse->disconnect(psmouse);
666 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
668 input_unregister_device(&psmouse->dev);
674 * psmouse_connect() is a callback from the serio module when
675 * an unhandled serio port is found.
677 static void psmouse_connect(struct serio *serio, struct serio_driver *drv)
679 struct psmouse *psmouse, *parent = NULL;
681 if ((serio->type & SERIO_TYPE) != SERIO_8042 &&
682 (serio->type & SERIO_TYPE) != SERIO_PS_PSTHRU)
686 * If this is a pass-through port deactivate parent so the device
687 * connected to this port can be successfully identified
689 if (serio->parent && (serio->type & SERIO_TYPE) == SERIO_PS_PSTHRU) {
690 parent = serio->parent->private;
691 psmouse_deactivate(parent);
694 if (!(psmouse = kmalloc(sizeof(struct psmouse), GFP_KERNEL)))
697 memset(psmouse, 0, sizeof(struct psmouse));
699 ps2_init(&psmouse->ps2dev, serio);
700 psmouse->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
701 psmouse->dev.keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
702 psmouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y);
703 psmouse->dev.private = psmouse;
704 psmouse->dev.dev = &serio->dev;
705 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
707 serio->private = psmouse;
708 if (serio_open(serio, drv)) {
710 serio->private = NULL;
714 if (psmouse_probe(psmouse) < 0) {
717 serio->private = NULL;
721 psmouse->rate = psmouse_rate;
722 psmouse->resolution = psmouse_resolution;
723 psmouse->resetafter = psmouse_resetafter;
724 psmouse->smartscroll = psmouse_smartscroll;
725 psmouse->set_rate = psmouse_set_rate;
726 psmouse->set_resolution = psmouse_set_resolution;
727 psmouse->protocol_handler = psmouse_process_byte;
728 psmouse->pktsize = 3;
730 psmouse->type = psmouse_extensions(psmouse, psmouse_max_proto, 1);
732 sprintf(psmouse->devname, "%s %s %s",
733 psmouse_protocols[psmouse->type], psmouse->vendor, psmouse->name);
734 sprintf(psmouse->phys, "%s/input0",
737 psmouse->dev.name = psmouse->devname;
738 psmouse->dev.phys = psmouse->phys;
739 psmouse->dev.id.bustype = BUS_I8042;
740 psmouse->dev.id.vendor = 0x0002;
741 psmouse->dev.id.product = psmouse->type;
742 psmouse->dev.id.version = psmouse->model;
744 input_register_device(&psmouse->dev);
746 printk(KERN_INFO "input: %s on %s\n", psmouse->devname, serio->phys);
748 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
750 psmouse_initialize(psmouse);
752 if (parent && parent->pt_activate)
753 parent->pt_activate(parent);
755 device_create_file(&serio->dev, &psmouse_attr_rate);
756 device_create_file(&serio->dev, &psmouse_attr_resolution);
757 device_create_file(&serio->dev, &psmouse_attr_resetafter);
761 * Nothing to be done here, serio core will detect that
762 * the driver set serio->child and will register it for us.
764 printk(KERN_INFO "serio: %s port at %s\n", serio->child->name, psmouse->phys);
767 psmouse_activate(psmouse);
770 /* If this is a pass-through port the parent awaits to be activated */
772 psmouse_activate(parent);
776 static int psmouse_reconnect(struct serio *serio)
778 struct psmouse *psmouse = serio->private;
779 struct psmouse *parent = NULL;
780 struct serio_driver *drv = serio->drv;
783 if (!drv || !psmouse) {
784 printk(KERN_DEBUG "psmouse: reconnect request, but serio is disconnected, ignoring...\n");
788 if (serio->parent && (serio->type & SERIO_TYPE) == SERIO_PS_PSTHRU) {
789 parent = serio->parent->private;
790 psmouse_deactivate(parent);
793 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
795 if (psmouse->reconnect) {
796 if (psmouse->reconnect(psmouse))
798 } else if (psmouse_probe(psmouse) < 0 ||
799 psmouse->type != psmouse_extensions(psmouse, psmouse_max_proto, 0))
802 /* ok, the device type (and capabilities) match the old one,
803 * we can continue using it, complete intialization
805 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
807 psmouse_initialize(psmouse);
809 if (parent && parent->pt_activate)
810 parent->pt_activate(parent);
812 psmouse_activate(psmouse);
816 /* If this is a pass-through port the parent waits to be activated */
818 psmouse_activate(parent);
824 static struct serio_driver psmouse_drv = {
828 .description = DRIVER_DESC,
829 .interrupt = psmouse_interrupt,
830 .connect = psmouse_connect,
831 .reconnect = psmouse_reconnect,
832 .disconnect = psmouse_disconnect,
833 .cleanup = psmouse_cleanup,
836 ssize_t psmouse_attr_show_helper(struct device *dev, char *buf,
837 ssize_t (*handler)(struct psmouse *, char *))
839 struct serio *serio = to_serio_port(dev);
842 retval = serio_pin_driver(serio);
846 if (serio->drv != &psmouse_drv) {
851 retval = handler(serio->private, buf);
854 serio_unpin_driver(serio);
858 ssize_t psmouse_attr_set_helper(struct device *dev, const char *buf, size_t count,
859 ssize_t (*handler)(struct psmouse *, const char *, size_t))
861 struct serio *serio = to_serio_port(dev);
862 struct psmouse *psmouse = serio->private, *parent = NULL;
865 retval = serio_pin_driver(serio);
869 if (serio->drv != &psmouse_drv) {
874 if (serio->parent && (serio->type & SERIO_TYPE) == SERIO_PS_PSTHRU) {
875 parent = serio->parent->private;
876 psmouse_deactivate(parent);
878 psmouse_deactivate(psmouse);
880 retval = handler(psmouse, buf, count);
882 psmouse_activate(psmouse);
884 psmouse_activate(parent);
887 serio_unpin_driver(serio);
891 static ssize_t psmouse_attr_show_rate(struct psmouse *psmouse, char *buf)
893 return sprintf(buf, "%d\n", psmouse->rate);
896 static ssize_t psmouse_attr_set_rate(struct psmouse *psmouse, const char *buf, size_t count)
901 value = simple_strtoul(buf, &rest, 10);
905 psmouse->set_rate(psmouse, value);
909 static ssize_t psmouse_attr_show_resolution(struct psmouse *psmouse, char *buf)
911 return sprintf(buf, "%d\n", psmouse->resolution);
914 static ssize_t psmouse_attr_set_resolution(struct psmouse *psmouse, const char *buf, size_t count)
919 value = simple_strtoul(buf, &rest, 10);
923 psmouse->set_resolution(psmouse, value);
927 static ssize_t psmouse_attr_show_resetafter(struct psmouse *psmouse, char *buf)
929 return sprintf(buf, "%d\n", psmouse->resetafter);
932 static ssize_t psmouse_attr_set_resetafter(struct psmouse *psmouse, const char *buf, size_t count)
937 value = simple_strtoul(buf, &rest, 10);
941 psmouse->resetafter = value;
945 static inline void psmouse_parse_proto(void)
948 if (!strcmp(psmouse_proto, "bare"))
949 psmouse_max_proto = PSMOUSE_PS2;
950 else if (!strcmp(psmouse_proto, "imps"))
951 psmouse_max_proto = PSMOUSE_IMPS;
952 else if (!strcmp(psmouse_proto, "exps"))
953 psmouse_max_proto = PSMOUSE_IMEX;
955 printk(KERN_ERR "psmouse: unknown protocol type '%s'\n", psmouse_proto);
959 int __init psmouse_init(void)
961 psmouse_parse_proto();
962 serio_register_driver(&psmouse_drv);
966 void __exit psmouse_exit(void)
968 serio_unregister_driver(&psmouse_drv);
971 module_init(psmouse_init);
972 module_exit(psmouse_exit);