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 unsigned int psmouse_max_proto = -1U;
35 static int psmouse_set_maxproto(const char *val, struct kernel_param *kp);
36 static int psmouse_get_maxproto(char *buffer, struct kernel_param *kp);
37 static char *psmouse_proto_abbrev[] = { NULL, "bare", NULL, NULL, NULL, "imps", "exps", NULL, NULL, NULL };
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(rate);
61 PSMOUSE_DEFINE_ATTR(resolution);
62 PSMOUSE_DEFINE_ATTR(resetafter);
64 __obsolete_setup("psmouse_noext");
65 __obsolete_setup("psmouse_resolution=");
66 __obsolete_setup("psmouse_smartscroll=");
67 __obsolete_setup("psmouse_resetafter=");
68 __obsolete_setup("psmouse_rate=");
70 static char *psmouse_protocols[] = { "None", "PS/2", "PS2++", "ThinkPS/2", "GenPS/2", "ImPS/2", "ImExPS/2", "SynPS/2", "AlpsPS/2" };
73 * psmouse_process_byte() analyzes the PS/2 data stream and reports
74 * relevant events to the input module once full packet has arrived.
77 static psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse, struct pt_regs *regs)
79 struct input_dev *dev = &psmouse->dev;
80 unsigned char *packet = psmouse->packet;
82 if (psmouse->pktcnt < psmouse->pktsize)
83 return PSMOUSE_GOOD_DATA;
86 * Full packet accumulated, process it
89 input_regs(dev, regs);
92 * Scroll wheel on IntelliMice, scroll buttons on NetMice
95 if (psmouse->type == PSMOUSE_IMPS || psmouse->type == PSMOUSE_GENPS)
96 input_report_rel(dev, REL_WHEEL, -(signed char) packet[3]);
99 * Scroll wheel and buttons on IntelliMouse Explorer
102 if (psmouse->type == PSMOUSE_IMEX) {
103 input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 8) - (int) (packet[3] & 7));
104 input_report_key(dev, BTN_SIDE, (packet[3] >> 4) & 1);
105 input_report_key(dev, BTN_EXTRA, (packet[3] >> 5) & 1);
109 * Extra buttons on Genius NewNet 3D
112 if (psmouse->type == PSMOUSE_GENPS) {
113 input_report_key(dev, BTN_SIDE, (packet[0] >> 6) & 1);
114 input_report_key(dev, BTN_EXTRA, (packet[0] >> 7) & 1);
118 * Extra button on ThinkingMouse
120 if (psmouse->type == PSMOUSE_THINKPS) {
121 input_report_key(dev, BTN_EXTRA, (packet[0] >> 3) & 1);
122 /* Without this bit of weirdness moving up gives wildly high Y changes. */
123 packet[1] |= (packet[0] & 0x40) << 1;
130 input_report_key(dev, BTN_LEFT, packet[0] & 1);
131 input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1);
132 input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1);
134 input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0);
135 input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0);
139 return PSMOUSE_FULL_PACKET;
143 * psmouse_interrupt() handles incoming characters, either gathering them into
144 * packets or passing them to the command routine as command output.
147 static irqreturn_t psmouse_interrupt(struct serio *serio,
148 unsigned char data, unsigned int flags, struct pt_regs *regs)
150 struct psmouse *psmouse = serio_get_drvdata(serio);
153 if (psmouse->state == PSMOUSE_IGNORE)
156 if (flags & (SERIO_PARITY|SERIO_TIMEOUT)) {
157 if (psmouse->state == PSMOUSE_ACTIVATED)
158 printk(KERN_WARNING "psmouse.c: bad data from KBC -%s%s\n",
159 flags & SERIO_TIMEOUT ? " timeout" : "",
160 flags & SERIO_PARITY ? " bad parity" : "");
161 ps2_cmd_aborted(&psmouse->ps2dev);
165 if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_ACK))
166 if (ps2_handle_ack(&psmouse->ps2dev, data))
169 if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_CMD))
170 if (ps2_handle_response(&psmouse->ps2dev, data))
173 if (psmouse->state == PSMOUSE_INITIALIZING)
176 if (psmouse->state == PSMOUSE_ACTIVATED &&
177 psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) {
178 printk(KERN_WARNING "psmouse.c: %s at %s lost synchronization, throwing %d bytes away.\n",
179 psmouse->name, psmouse->phys, psmouse->pktcnt);
183 psmouse->last = jiffies;
184 psmouse->packet[psmouse->pktcnt++] = data;
186 if (psmouse->packet[0] == PSMOUSE_RET_BAT) {
187 if (psmouse->pktcnt == 1)
190 if (psmouse->pktcnt == 2) {
191 if (psmouse->packet[1] == PSMOUSE_RET_ID) {
192 psmouse->state = PSMOUSE_IGNORE;
193 serio_reconnect(serio);
196 if (psmouse->type == PSMOUSE_SYNAPTICS) {
197 /* neither 0xAA nor 0x00 are valid first bytes
198 * for a packet in absolute mode
206 rc = psmouse->protocol_handler(psmouse, regs);
209 case PSMOUSE_BAD_DATA:
210 printk(KERN_WARNING "psmouse.c: %s at %s lost sync at byte %d\n",
211 psmouse->name, psmouse->phys, psmouse->pktcnt);
214 if (++psmouse->out_of_sync == psmouse->resetafter) {
215 psmouse->state = PSMOUSE_IGNORE;
216 printk(KERN_NOTICE "psmouse.c: issuing reconnect request\n");
217 serio_reconnect(psmouse->ps2dev.serio);
221 case PSMOUSE_FULL_PACKET:
223 if (psmouse->out_of_sync) {
224 psmouse->out_of_sync = 0;
225 printk(KERN_NOTICE "psmouse.c: %s at %s - driver resynched.\n",
226 psmouse->name, psmouse->phys);
230 case PSMOUSE_GOOD_DATA:
239 * psmouse_sliced_command() sends an extended PS/2 command to the mouse
240 * using sliced syntax, understood by advanced devices, such as Logitech
241 * or Synaptics touchpads. The command is encoded as:
242 * 0xE6 0xE8 rr 0xE8 ss 0xE8 tt 0xE8 uu where (rr*64)+(ss*16)+(tt*4)+uu
245 int psmouse_sliced_command(struct psmouse *psmouse, unsigned char command)
249 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11))
252 for (i = 6; i >= 0; i -= 2) {
253 unsigned char d = (command >> i) & 3;
254 if (ps2_command(&psmouse->ps2dev, &d, PSMOUSE_CMD_SETRES))
263 * psmouse_reset() resets the mouse into power-on state.
265 int psmouse_reset(struct psmouse *psmouse)
267 unsigned char param[2];
269 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_RESET_BAT))
272 if (param[0] != PSMOUSE_RET_BAT && param[1] != PSMOUSE_RET_ID)
280 * Genius NetMouse magic init.
282 static int genius_detect(struct psmouse *psmouse, int set_properties)
284 struct ps2dev *ps2dev = &psmouse->ps2dev;
285 unsigned char param[4];
288 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
289 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
290 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
291 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
292 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
294 if (param[0] != 0x00 || param[1] != 0x33 || param[2] != 0x55)
297 if (set_properties) {
298 set_bit(BTN_EXTRA, psmouse->dev.keybit);
299 set_bit(BTN_SIDE, psmouse->dev.keybit);
300 set_bit(REL_WHEEL, psmouse->dev.relbit);
302 psmouse->vendor = "Genius";
303 psmouse->name = "Wheel Mouse";
304 psmouse->pktsize = 4;
311 * IntelliMouse magic init.
313 static int intellimouse_detect(struct psmouse *psmouse, int set_properties)
315 struct ps2dev *ps2dev = &psmouse->ps2dev;
316 unsigned char param[2];
319 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
321 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
323 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
324 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
329 if (set_properties) {
330 set_bit(REL_WHEEL, psmouse->dev.relbit);
332 if (!psmouse->vendor) psmouse->vendor = "Generic";
333 if (!psmouse->name) psmouse->name = "Wheel Mouse";
334 psmouse->pktsize = 4;
341 * Try IntelliMouse/Explorer magic init.
343 static int im_explorer_detect(struct psmouse *psmouse, int set_properties)
345 struct ps2dev *ps2dev = &psmouse->ps2dev;
346 unsigned char param[2];
348 intellimouse_detect(psmouse, 0);
351 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
353 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
355 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
356 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
361 if (set_properties) {
362 set_bit(REL_WHEEL, psmouse->dev.relbit);
363 set_bit(BTN_SIDE, psmouse->dev.keybit);
364 set_bit(BTN_EXTRA, psmouse->dev.keybit);
366 if (!psmouse->vendor) psmouse->vendor = "Generic";
367 if (!psmouse->name) psmouse->name = "Explorer Mouse";
368 psmouse->pktsize = 4;
375 * Kensington ThinkingMouse / ExpertMouse magic init.
377 static int thinking_detect(struct psmouse *psmouse, int set_properties)
379 struct ps2dev *ps2dev = &psmouse->ps2dev;
380 unsigned char param[2];
381 unsigned char seq[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20, 0 };
385 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
387 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
388 for (i = 0; seq[i]; i++)
389 ps2_command(ps2dev, seq + i, PSMOUSE_CMD_SETRATE);
390 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
395 if (set_properties) {
396 set_bit(BTN_EXTRA, psmouse->dev.keybit);
398 psmouse->vendor = "Kensington";
399 psmouse->name = "ThinkingMouse";
406 * Bare PS/2 protocol "detection". Always succeeds.
408 static int ps2bare_detect(struct psmouse *psmouse, int set_properties)
410 if (!psmouse->vendor) psmouse->vendor = "Generic";
411 if (!psmouse->name) psmouse->name = "Mouse";
417 * psmouse_extensions() probes for any extensions to the basic PS/2 protocol
418 * the mouse may have.
421 static int psmouse_extensions(struct psmouse *psmouse,
422 unsigned int max_proto, int set_properties)
424 int synaptics_hardware = 0;
427 * Try Kensington ThinkingMouse (we try first, because synaptics probe
428 * upsets the thinkingmouse).
431 if (max_proto > PSMOUSE_IMEX && thinking_detect(psmouse, set_properties) == 0)
432 return PSMOUSE_THINKPS;
435 * Try Synaptics TouchPad
437 if (max_proto > PSMOUSE_PS2 && synaptics_detect(psmouse, set_properties) == 0) {
438 synaptics_hardware = 1;
440 if (max_proto > PSMOUSE_IMEX) {
441 if (!set_properties || synaptics_init(psmouse) == 0)
442 return PSMOUSE_SYNAPTICS;
444 * Some Synaptics touchpads can emulate extended protocols (like IMPS/2).
445 * Unfortunately Logitech/Genius probes confuse some firmware versions so
446 * we'll have to skip them.
448 max_proto = PSMOUSE_IMEX;
451 * Make sure that touchpad is in relative mode, gestures (taps) are enabled
453 synaptics_reset(psmouse);
459 if (max_proto > PSMOUSE_IMEX) {
460 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
461 if (alps_detect(psmouse, set_properties) == 0) {
462 if (!set_properties || alps_init(psmouse) == 0)
465 * Init failed, try basic relative protocols
467 max_proto = PSMOUSE_IMEX;
471 if (max_proto > PSMOUSE_IMEX && genius_detect(psmouse, set_properties) == 0)
472 return PSMOUSE_GENPS;
474 if (max_proto > PSMOUSE_IMEX && ps2pp_init(psmouse, set_properties) == 0)
475 return PSMOUSE_PS2PP;
478 * Reset to defaults in case the device got confused by extended
481 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
483 if (max_proto >= PSMOUSE_IMEX && im_explorer_detect(psmouse, set_properties) == 0)
486 if (max_proto >= PSMOUSE_IMPS && intellimouse_detect(psmouse, set_properties) == 0)
490 * Okay, all failed, we have a standard mouse here. The number of the buttons
491 * is still a question, though. We assume 3.
493 ps2bare_detect(psmouse, set_properties);
495 if (synaptics_hardware) {
497 * We detected Synaptics hardware but it did not respond to IMPS/2 probes.
498 * We need to reset the touchpad because if there is a track point on the
499 * pass through port it could get disabled while probing for protocol
502 psmouse_reset(psmouse);
503 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
510 * psmouse_probe() probes for a PS/2 mouse.
513 static int psmouse_probe(struct psmouse *psmouse)
515 struct ps2dev *ps2dev = &psmouse->ps2dev;
516 unsigned char param[2];
519 * First, we check if it's a mouse. It should send 0x00 or 0x03
520 * in case of an IntelliMouse in 4-byte mode or 0x04 for IM Explorer.
521 * Sunrex K8561 IR Keyboard/Mouse reports 0xff on second and subsequent
522 * ID queries, probably due to a firmware bug.
526 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETID))
529 if (param[0] != 0x00 && param[0] != 0x03 &&
530 param[0] != 0x04 && param[0] != 0xff)
534 * Then we reset and disable the mouse so that it doesn't generate events.
537 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_DIS))
538 printk(KERN_WARNING "psmouse.c: Failed to reset mouse on %s\n", ps2dev->serio->phys);
544 * Here we set the mouse resolution.
547 void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution)
549 unsigned char params[] = { 0, 1, 2, 2, 3 };
551 if (resolution == 0 || resolution > 200)
554 ps2_command(&psmouse->ps2dev, ¶ms[resolution / 50], PSMOUSE_CMD_SETRES);
555 psmouse->resolution = 25 << params[resolution / 50];
559 * Here we set the mouse report rate.
562 static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate)
564 unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 };
567 while (rates[i] > rate) i++;
568 ps2_command(&psmouse->ps2dev, &rates[i], PSMOUSE_CMD_SETRATE);
569 psmouse->rate = rates[i];
573 * psmouse_initialize() initializes the mouse to a sane state.
576 static void psmouse_initialize(struct psmouse *psmouse)
579 * We set the mouse into streaming mode.
582 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM);
585 * We set the mouse report rate, resolution and scaling.
588 if (psmouse_max_proto != PSMOUSE_PS2) {
589 psmouse->set_rate(psmouse, psmouse->rate);
590 psmouse->set_resolution(psmouse, psmouse->resolution);
591 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
596 * psmouse_set_state() sets new psmouse state and resets all flags and
597 * counters while holding serio lock so fighting with interrupt handler
601 static void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state)
603 serio_pause_rx(psmouse->ps2dev.serio);
604 psmouse->state = new_state;
605 psmouse->pktcnt = psmouse->out_of_sync = 0;
606 psmouse->ps2dev.flags = 0;
607 serio_continue_rx(psmouse->ps2dev.serio);
611 * psmouse_activate() enables the mouse so that we get motion reports from it.
614 static void psmouse_activate(struct psmouse *psmouse)
616 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE))
617 printk(KERN_WARNING "psmouse.c: Failed to enable mouse on %s\n",
618 psmouse->ps2dev.serio->phys);
620 psmouse_set_state(psmouse, PSMOUSE_ACTIVATED);
625 * psmouse_deactivate() puts the mouse into poll mode so that we don't get motion
626 * reports from it unless we explicitely request it.
629 static void psmouse_deactivate(struct psmouse *psmouse)
631 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE))
632 printk(KERN_WARNING "psmouse.c: Failed to deactivate mouse on %s\n",
633 psmouse->ps2dev.serio->phys);
635 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
640 * psmouse_cleanup() resets the mouse into power-on state.
643 static void psmouse_cleanup(struct serio *serio)
645 struct psmouse *psmouse = serio_get_drvdata(serio);
647 psmouse_reset(psmouse);
651 * psmouse_disconnect() closes and frees.
654 static void psmouse_disconnect(struct serio *serio)
656 struct psmouse *psmouse, *parent;
658 device_remove_file(&serio->dev, &psmouse_attr_rate);
659 device_remove_file(&serio->dev, &psmouse_attr_resolution);
660 device_remove_file(&serio->dev, &psmouse_attr_resetafter);
662 psmouse = serio_get_drvdata(serio);
663 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
665 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
666 parent = serio_get_drvdata(serio->parent);
667 if (parent->pt_deactivate)
668 parent->pt_deactivate(parent);
671 if (psmouse->disconnect)
672 psmouse->disconnect(psmouse);
674 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
676 input_unregister_device(&psmouse->dev);
678 serio_set_drvdata(serio, NULL);
683 * psmouse_connect() is a callback from the serio module when
684 * an unhandled serio port is found.
686 static int psmouse_connect(struct serio *serio, struct serio_driver *drv)
688 struct psmouse *psmouse, *parent = NULL;
692 * If this is a pass-through port deactivate parent so the device
693 * connected to this port can be successfully identified
695 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
696 parent = serio_get_drvdata(serio->parent);
697 psmouse_deactivate(parent);
700 if (!(psmouse = kmalloc(sizeof(struct psmouse), GFP_KERNEL))) {
705 memset(psmouse, 0, sizeof(struct psmouse));
707 ps2_init(&psmouse->ps2dev, serio);
708 sprintf(psmouse->phys, "%s/input0", serio->phys);
709 psmouse->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
710 psmouse->dev.keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
711 psmouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y);
712 psmouse->dev.private = psmouse;
713 psmouse->dev.dev = &serio->dev;
714 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
716 serio_set_drvdata(serio, psmouse);
718 retval = serio_open(serio, drv);
720 serio_set_drvdata(serio, NULL);
725 if (psmouse_probe(psmouse) < 0) {
727 serio_set_drvdata(serio, NULL);
733 psmouse->rate = psmouse_rate;
734 psmouse->resolution = psmouse_resolution;
735 psmouse->resetafter = psmouse_resetafter;
736 psmouse->smartscroll = psmouse_smartscroll;
737 psmouse->set_rate = psmouse_set_rate;
738 psmouse->set_resolution = psmouse_set_resolution;
739 psmouse->protocol_handler = psmouse_process_byte;
740 psmouse->pktsize = 3;
742 psmouse->type = psmouse_extensions(psmouse, psmouse_max_proto, 1);
744 sprintf(psmouse->devname, "%s %s %s",
745 psmouse_protocols[psmouse->type], psmouse->vendor, psmouse->name);
747 psmouse->dev.name = psmouse->devname;
748 psmouse->dev.phys = psmouse->phys;
749 psmouse->dev.id.bustype = BUS_I8042;
750 psmouse->dev.id.vendor = 0x0002;
751 psmouse->dev.id.product = psmouse->type;
752 psmouse->dev.id.version = psmouse->model;
754 input_register_device(&psmouse->dev);
756 printk(KERN_INFO "input: %s on %s\n", psmouse->devname, serio->phys);
758 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
760 psmouse_initialize(psmouse);
762 if (parent && parent->pt_activate)
763 parent->pt_activate(parent);
765 device_create_file(&serio->dev, &psmouse_attr_rate);
766 device_create_file(&serio->dev, &psmouse_attr_resolution);
767 device_create_file(&serio->dev, &psmouse_attr_resetafter);
769 psmouse_activate(psmouse);
774 /* If this is a pass-through port the parent awaits to be activated */
776 psmouse_activate(parent);
782 static int psmouse_reconnect(struct serio *serio)
784 struct psmouse *psmouse = serio_get_drvdata(serio);
785 struct psmouse *parent = NULL;
786 struct serio_driver *drv = serio->drv;
789 if (!drv || !psmouse) {
790 printk(KERN_DEBUG "psmouse: reconnect request, but serio is disconnected, ignoring...\n");
794 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
795 parent = serio_get_drvdata(serio->parent);
796 psmouse_deactivate(parent);
799 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
801 if (psmouse->reconnect) {
802 if (psmouse->reconnect(psmouse))
804 } else if (psmouse_probe(psmouse) < 0 ||
805 psmouse->type != psmouse_extensions(psmouse, psmouse_max_proto, 0))
808 /* ok, the device type (and capabilities) match the old one,
809 * we can continue using it, complete intialization
811 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
813 psmouse_initialize(psmouse);
815 if (parent && parent->pt_activate)
816 parent->pt_activate(parent);
818 psmouse_activate(psmouse);
822 /* If this is a pass-through port the parent waits to be activated */
824 psmouse_activate(parent);
829 static struct serio_device_id psmouse_serio_ids[] = {
837 .type = SERIO_PS_PSTHRU,
845 MODULE_DEVICE_TABLE(serio, psmouse_serio_ids);
847 static struct serio_driver psmouse_drv = {
851 .description = DRIVER_DESC,
852 .id_table = psmouse_serio_ids,
853 .interrupt = psmouse_interrupt,
854 .connect = psmouse_connect,
855 .reconnect = psmouse_reconnect,
856 .disconnect = psmouse_disconnect,
857 .cleanup = psmouse_cleanup,
860 ssize_t psmouse_attr_show_helper(struct device *dev, char *buf,
861 ssize_t (*handler)(struct psmouse *, char *))
863 struct serio *serio = to_serio_port(dev);
866 retval = serio_pin_driver(serio);
870 if (serio->drv != &psmouse_drv) {
875 retval = handler(serio_get_drvdata(serio), buf);
878 serio_unpin_driver(serio);
882 ssize_t psmouse_attr_set_helper(struct device *dev, const char *buf, size_t count,
883 ssize_t (*handler)(struct psmouse *, const char *, size_t))
885 struct serio *serio = to_serio_port(dev);
886 struct psmouse *psmouse = serio_get_drvdata(serio);
887 struct psmouse *parent = NULL;
890 retval = serio_pin_driver(serio);
894 if (serio->drv != &psmouse_drv) {
899 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
900 parent = serio_get_drvdata(serio->parent);
901 psmouse_deactivate(parent);
903 psmouse_deactivate(psmouse);
905 retval = handler(psmouse, buf, count);
907 psmouse_activate(psmouse);
909 psmouse_activate(parent);
912 serio_unpin_driver(serio);
916 static ssize_t psmouse_attr_show_rate(struct psmouse *psmouse, char *buf)
918 return sprintf(buf, "%d\n", psmouse->rate);
921 static ssize_t psmouse_attr_set_rate(struct psmouse *psmouse, const char *buf, size_t count)
926 value = simple_strtoul(buf, &rest, 10);
930 psmouse->set_rate(psmouse, value);
934 static ssize_t psmouse_attr_show_resolution(struct psmouse *psmouse, char *buf)
936 return sprintf(buf, "%d\n", psmouse->resolution);
939 static ssize_t psmouse_attr_set_resolution(struct psmouse *psmouse, const char *buf, size_t count)
944 value = simple_strtoul(buf, &rest, 10);
948 psmouse->set_resolution(psmouse, value);
952 static ssize_t psmouse_attr_show_resetafter(struct psmouse *psmouse, char *buf)
954 return sprintf(buf, "%d\n", psmouse->resetafter);
957 static ssize_t psmouse_attr_set_resetafter(struct psmouse *psmouse, const char *buf, size_t count)
962 value = simple_strtoul(buf, &rest, 10);
966 psmouse->resetafter = value;
970 static int psmouse_set_maxproto(const char *val, struct kernel_param *kp)
977 if (!strncmp(val, "any", 3)) {
978 *((unsigned int *)kp->arg) = -1U;
982 for (i = 0; i < ARRAY_SIZE(psmouse_proto_abbrev); i++) {
983 if (!psmouse_proto_abbrev[i])
986 if (!strncmp(val, psmouse_proto_abbrev[i], strlen(psmouse_proto_abbrev[i]))) {
987 *((unsigned int *)kp->arg) = i;
995 static int psmouse_get_maxproto(char *buffer, struct kernel_param *kp)
997 return sprintf(buffer, "%s\n",
998 psmouse_max_proto < ARRAY_SIZE(psmouse_proto_abbrev) ?
999 psmouse_proto_abbrev[psmouse_max_proto] : "any");
1002 static int __init psmouse_init(void)
1004 serio_register_driver(&psmouse_drv);
1008 static void __exit psmouse_exit(void)
1010 serio_unregister_driver(&psmouse_drv);
1013 module_init(psmouse_init);
1014 module_exit(psmouse_exit);