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 #include "trackpoint.h"
30 #define DRIVER_DESC "PS/2 mouse driver"
32 MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
33 MODULE_DESCRIPTION(DRIVER_DESC);
34 MODULE_LICENSE("GPL");
36 static unsigned int psmouse_max_proto = PSMOUSE_AUTO;
37 static int psmouse_set_maxproto(const char *val, struct kernel_param *kp);
38 static int psmouse_get_maxproto(char *buffer, struct kernel_param *kp);
39 #define param_check_proto_abbrev(name, p) __param_check(name, p, unsigned int)
40 #define param_set_proto_abbrev psmouse_set_maxproto
41 #define param_get_proto_abbrev psmouse_get_maxproto
42 module_param_named(proto, psmouse_max_proto, proto_abbrev, 0644);
43 MODULE_PARM_DESC(proto, "Highest protocol extension to probe (bare, imps, exps, any). Useful for KVM switches.");
45 static unsigned int psmouse_resolution = 200;
46 module_param_named(resolution, psmouse_resolution, uint, 0644);
47 MODULE_PARM_DESC(resolution, "Resolution, in dpi.");
49 static unsigned int psmouse_rate = 100;
50 module_param_named(rate, psmouse_rate, uint, 0644);
51 MODULE_PARM_DESC(rate, "Report rate, in reports per second.");
53 static unsigned int psmouse_smartscroll = 1;
54 module_param_named(smartscroll, psmouse_smartscroll, bool, 0644);
55 MODULE_PARM_DESC(smartscroll, "Logitech Smartscroll autorepeat, 1 = enabled (default), 0 = disabled.");
57 static unsigned int psmouse_resetafter;
58 module_param_named(resetafter, psmouse_resetafter, uint, 0644);
59 MODULE_PARM_DESC(resetafter, "Reset device after so many bad packets (0 = never).");
61 PSMOUSE_DEFINE_ATTR(protocol);
62 PSMOUSE_DEFINE_ATTR(rate);
63 PSMOUSE_DEFINE_ATTR(resolution);
64 PSMOUSE_DEFINE_ATTR(resetafter);
66 __obsolete_setup("psmouse_noext");
67 __obsolete_setup("psmouse_resolution=");
68 __obsolete_setup("psmouse_smartscroll=");
69 __obsolete_setup("psmouse_resetafter=");
70 __obsolete_setup("psmouse_rate=");
73 * psmouse_sem protects all operations changing state of mouse
74 * (connecting, disconnecting, changing rate or resolution via
75 * sysfs). We could use a per-device semaphore but since there
76 * rarely more than one PS/2 mouse connected and since semaphore
77 * is taken in "slow" paths it is not worth it.
79 static DECLARE_MUTEX(psmouse_sem);
81 struct psmouse_protocol {
82 enum psmouse_type type;
86 int (*detect)(struct psmouse *, int);
87 int (*init)(struct psmouse *);
91 * psmouse_process_byte() analyzes the PS/2 data stream and reports
92 * relevant events to the input module once full packet has arrived.
95 static psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse, struct pt_regs *regs)
97 struct input_dev *dev = &psmouse->dev;
98 unsigned char *packet = psmouse->packet;
100 if (psmouse->pktcnt < psmouse->pktsize)
101 return PSMOUSE_GOOD_DATA;
104 * Full packet accumulated, process it
107 input_regs(dev, regs);
110 * Scroll wheel on IntelliMice, scroll buttons on NetMice
113 if (psmouse->type == PSMOUSE_IMPS || psmouse->type == PSMOUSE_GENPS)
114 input_report_rel(dev, REL_WHEEL, -(signed char) packet[3]);
117 * Scroll wheel and buttons on IntelliMouse Explorer
120 if (psmouse->type == PSMOUSE_IMEX) {
121 input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 8) - (int) (packet[3] & 7));
122 input_report_key(dev, BTN_SIDE, (packet[3] >> 4) & 1);
123 input_report_key(dev, BTN_EXTRA, (packet[3] >> 5) & 1);
127 * Extra buttons on Genius NewNet 3D
130 if (psmouse->type == PSMOUSE_GENPS) {
131 input_report_key(dev, BTN_SIDE, (packet[0] >> 6) & 1);
132 input_report_key(dev, BTN_EXTRA, (packet[0] >> 7) & 1);
136 * Extra button on ThinkingMouse
138 if (psmouse->type == PSMOUSE_THINKPS) {
139 input_report_key(dev, BTN_EXTRA, (packet[0] >> 3) & 1);
140 /* Without this bit of weirdness moving up gives wildly high Y changes. */
141 packet[1] |= (packet[0] & 0x40) << 1;
148 input_report_key(dev, BTN_LEFT, packet[0] & 1);
149 input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1);
150 input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1);
152 input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0);
153 input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0);
157 return PSMOUSE_FULL_PACKET;
161 * psmouse_interrupt() handles incoming characters, either gathering them into
162 * packets or passing them to the command routine as command output.
165 static irqreturn_t psmouse_interrupt(struct serio *serio,
166 unsigned char data, unsigned int flags, struct pt_regs *regs)
168 struct psmouse *psmouse = serio_get_drvdata(serio);
171 if (psmouse->state == PSMOUSE_IGNORE)
174 if (flags & (SERIO_PARITY|SERIO_TIMEOUT)) {
175 if (psmouse->state == PSMOUSE_ACTIVATED)
176 printk(KERN_WARNING "psmouse.c: bad data from KBC -%s%s\n",
177 flags & SERIO_TIMEOUT ? " timeout" : "",
178 flags & SERIO_PARITY ? " bad parity" : "");
179 ps2_cmd_aborted(&psmouse->ps2dev);
183 if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_ACK))
184 if (ps2_handle_ack(&psmouse->ps2dev, data))
187 if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_CMD))
188 if (ps2_handle_response(&psmouse->ps2dev, data))
191 if (psmouse->state == PSMOUSE_INITIALIZING)
194 if (psmouse->state == PSMOUSE_ACTIVATED &&
195 psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) {
196 printk(KERN_WARNING "psmouse.c: %s at %s lost synchronization, throwing %d bytes away.\n",
197 psmouse->name, psmouse->phys, psmouse->pktcnt);
201 psmouse->last = jiffies;
202 psmouse->packet[psmouse->pktcnt++] = data;
204 if (psmouse->packet[0] == PSMOUSE_RET_BAT) {
205 if (psmouse->pktcnt == 1)
208 if (psmouse->pktcnt == 2) {
209 if (psmouse->packet[1] == PSMOUSE_RET_ID) {
210 psmouse->state = PSMOUSE_IGNORE;
211 serio_reconnect(serio);
214 if (psmouse->type == PSMOUSE_SYNAPTICS) {
215 /* neither 0xAA nor 0x00 are valid first bytes
216 * for a packet in absolute mode
224 rc = psmouse->protocol_handler(psmouse, regs);
227 case PSMOUSE_BAD_DATA:
228 printk(KERN_WARNING "psmouse.c: %s at %s lost sync at byte %d\n",
229 psmouse->name, psmouse->phys, psmouse->pktcnt);
232 if (++psmouse->out_of_sync == psmouse->resetafter) {
233 psmouse->state = PSMOUSE_IGNORE;
234 printk(KERN_NOTICE "psmouse.c: issuing reconnect request\n");
235 serio_reconnect(psmouse->ps2dev.serio);
239 case PSMOUSE_FULL_PACKET:
241 if (psmouse->out_of_sync) {
242 psmouse->out_of_sync = 0;
243 printk(KERN_NOTICE "psmouse.c: %s at %s - driver resynched.\n",
244 psmouse->name, psmouse->phys);
248 case PSMOUSE_GOOD_DATA:
257 * psmouse_sliced_command() sends an extended PS/2 command to the mouse
258 * using sliced syntax, understood by advanced devices, such as Logitech
259 * or Synaptics touchpads. The command is encoded as:
260 * 0xE6 0xE8 rr 0xE8 ss 0xE8 tt 0xE8 uu where (rr*64)+(ss*16)+(tt*4)+uu
263 int psmouse_sliced_command(struct psmouse *psmouse, unsigned char command)
267 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11))
270 for (i = 6; i >= 0; i -= 2) {
271 unsigned char d = (command >> i) & 3;
272 if (ps2_command(&psmouse->ps2dev, &d, PSMOUSE_CMD_SETRES))
281 * psmouse_reset() resets the mouse into power-on state.
283 int psmouse_reset(struct psmouse *psmouse)
285 unsigned char param[2];
287 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_RESET_BAT))
290 if (param[0] != PSMOUSE_RET_BAT && param[1] != PSMOUSE_RET_ID)
298 * Genius NetMouse magic init.
300 static int genius_detect(struct psmouse *psmouse, int set_properties)
302 struct ps2dev *ps2dev = &psmouse->ps2dev;
303 unsigned char param[4];
306 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
307 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
308 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
309 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
310 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
312 if (param[0] != 0x00 || param[1] != 0x33 || param[2] != 0x55)
315 if (set_properties) {
316 set_bit(BTN_EXTRA, psmouse->dev.keybit);
317 set_bit(BTN_SIDE, psmouse->dev.keybit);
318 set_bit(REL_WHEEL, psmouse->dev.relbit);
320 psmouse->vendor = "Genius";
321 psmouse->name = "Wheel Mouse";
322 psmouse->pktsize = 4;
329 * IntelliMouse magic init.
331 static int intellimouse_detect(struct psmouse *psmouse, int set_properties)
333 struct ps2dev *ps2dev = &psmouse->ps2dev;
334 unsigned char param[2];
337 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
339 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
341 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
342 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
347 if (set_properties) {
348 set_bit(BTN_MIDDLE, psmouse->dev.keybit);
349 set_bit(REL_WHEEL, psmouse->dev.relbit);
351 if (!psmouse->vendor) psmouse->vendor = "Generic";
352 if (!psmouse->name) psmouse->name = "Wheel Mouse";
353 psmouse->pktsize = 4;
360 * Try IntelliMouse/Explorer magic init.
362 static int im_explorer_detect(struct psmouse *psmouse, int set_properties)
364 struct ps2dev *ps2dev = &psmouse->ps2dev;
365 unsigned char param[2];
367 intellimouse_detect(psmouse, 0);
370 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
372 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
374 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
375 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
380 if (set_properties) {
381 set_bit(BTN_MIDDLE, psmouse->dev.keybit);
382 set_bit(REL_WHEEL, psmouse->dev.relbit);
383 set_bit(BTN_SIDE, psmouse->dev.keybit);
384 set_bit(BTN_EXTRA, psmouse->dev.keybit);
386 if (!psmouse->vendor) psmouse->vendor = "Generic";
387 if (!psmouse->name) psmouse->name = "Explorer Mouse";
388 psmouse->pktsize = 4;
395 * Kensington ThinkingMouse / ExpertMouse magic init.
397 static int thinking_detect(struct psmouse *psmouse, int set_properties)
399 struct ps2dev *ps2dev = &psmouse->ps2dev;
400 unsigned char param[2];
401 unsigned char seq[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20, 0 };
405 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
407 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
408 for (i = 0; seq[i]; i++)
409 ps2_command(ps2dev, seq + i, PSMOUSE_CMD_SETRATE);
410 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
415 if (set_properties) {
416 set_bit(BTN_EXTRA, psmouse->dev.keybit);
418 psmouse->vendor = "Kensington";
419 psmouse->name = "ThinkingMouse";
426 * Bare PS/2 protocol "detection". Always succeeds.
428 static int ps2bare_detect(struct psmouse *psmouse, int set_properties)
430 if (set_properties) {
431 if (!psmouse->vendor) psmouse->vendor = "Generic";
432 if (!psmouse->name) psmouse->name = "Mouse";
440 * psmouse_extensions() probes for any extensions to the basic PS/2 protocol
441 * the mouse may have.
444 static int psmouse_extensions(struct psmouse *psmouse,
445 unsigned int max_proto, int set_properties)
447 int synaptics_hardware = 0;
450 * We always check for lifebook because it does not disturb mouse
451 * (it only checks DMI information).
453 if (lifebook_detect(psmouse, set_properties) == 0) {
454 if (max_proto > PSMOUSE_IMEX) {
455 if (!set_properties || lifebook_init(psmouse) == 0)
456 return PSMOUSE_LIFEBOOK;
461 * Try Kensington ThinkingMouse (we try first, because synaptics probe
462 * upsets the thinkingmouse).
465 if (max_proto > PSMOUSE_IMEX && thinking_detect(psmouse, set_properties) == 0)
466 return PSMOUSE_THINKPS;
469 * Try Synaptics TouchPad
471 if (max_proto > PSMOUSE_PS2 && synaptics_detect(psmouse, set_properties) == 0) {
472 synaptics_hardware = 1;
474 if (max_proto > PSMOUSE_IMEX) {
475 if (!set_properties || synaptics_init(psmouse) == 0)
476 return PSMOUSE_SYNAPTICS;
478 * Some Synaptics touchpads can emulate extended protocols (like IMPS/2).
479 * Unfortunately Logitech/Genius probes confuse some firmware versions so
480 * we'll have to skip them.
482 max_proto = PSMOUSE_IMEX;
485 * Make sure that touchpad is in relative mode, gestures (taps) are enabled
487 synaptics_reset(psmouse);
493 if (max_proto > PSMOUSE_IMEX) {
494 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
495 if (alps_detect(psmouse, set_properties) == 0) {
496 if (!set_properties || alps_init(psmouse) == 0)
499 * Init failed, try basic relative protocols
501 max_proto = PSMOUSE_IMEX;
505 if (max_proto > PSMOUSE_IMEX && genius_detect(psmouse, set_properties) == 0)
506 return PSMOUSE_GENPS;
508 if (max_proto > PSMOUSE_IMEX && ps2pp_init(psmouse, set_properties) == 0)
509 return PSMOUSE_PS2PP;
512 * Reset to defaults in case the device got confused by extended
515 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
517 if (max_proto >= PSMOUSE_IMEX && im_explorer_detect(psmouse, set_properties) == 0)
520 if (max_proto >= PSMOUSE_IMPS && intellimouse_detect(psmouse, set_properties) == 0)
524 * Try to initialize the IBM TrackPoint
526 if (max_proto > PSMOUSE_IMEX && trackpoint_detect(psmouse, set_properties) == 0)
527 return PSMOUSE_TRACKPOINT;
530 * Okay, all failed, we have a standard mouse here. The number of the buttons
531 * is still a question, though. We assume 3.
533 ps2bare_detect(psmouse, set_properties);
535 if (synaptics_hardware) {
537 * We detected Synaptics hardware but it did not respond to IMPS/2 probes.
538 * We need to reset the touchpad because if there is a track point on the
539 * pass through port it could get disabled while probing for protocol
542 psmouse_reset(psmouse);
543 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
549 static struct psmouse_protocol psmouse_protocols[] = {
555 .detect = ps2bare_detect,
558 .type = PSMOUSE_PS2PP,
561 .detect = ps2pp_init,
564 .type = PSMOUSE_THINKPS,
567 .detect = thinking_detect,
570 .type = PSMOUSE_GENPS,
573 .detect = genius_detect,
576 .type = PSMOUSE_IMPS,
580 .detect = intellimouse_detect,
583 .type = PSMOUSE_IMEX,
587 .detect = im_explorer_detect,
590 .type = PSMOUSE_SYNAPTICS,
592 .alias = "synaptics",
593 .detect = synaptics_detect,
594 .init = synaptics_init,
597 .type = PSMOUSE_ALPS,
600 .detect = alps_detect,
604 .type = PSMOUSE_LIFEBOOK,
607 .init = lifebook_init,
610 .type = PSMOUSE_TRACKPOINT,
612 .alias = "trackpoint",
613 .detect = trackpoint_detect,
616 .type = PSMOUSE_AUTO,
623 static struct psmouse_protocol *psmouse_protocol_by_type(enum psmouse_type type)
627 for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++)
628 if (psmouse_protocols[i].type == type)
629 return &psmouse_protocols[i];
632 return &psmouse_protocols[0];
635 static struct psmouse_protocol *psmouse_protocol_by_name(const char *name, size_t len)
637 struct psmouse_protocol *p;
640 for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++) {
641 p = &psmouse_protocols[i];
643 if ((strlen(p->name) == len && !strncmp(p->name, name, len)) ||
644 (strlen(p->alias) == len && !strncmp(p->alias, name, len)))
645 return &psmouse_protocols[i];
653 * psmouse_probe() probes for a PS/2 mouse.
656 static int psmouse_probe(struct psmouse *psmouse)
658 struct ps2dev *ps2dev = &psmouse->ps2dev;
659 unsigned char param[2];
662 * First, we check if it's a mouse. It should send 0x00 or 0x03
663 * in case of an IntelliMouse in 4-byte mode or 0x04 for IM Explorer.
664 * Sunrex K8561 IR Keyboard/Mouse reports 0xff on second and subsequent
665 * ID queries, probably due to a firmware bug.
669 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETID))
672 if (param[0] != 0x00 && param[0] != 0x03 &&
673 param[0] != 0x04 && param[0] != 0xff)
677 * Then we reset and disable the mouse so that it doesn't generate events.
680 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_DIS))
681 printk(KERN_WARNING "psmouse.c: Failed to reset mouse on %s\n", ps2dev->serio->phys);
687 * Here we set the mouse resolution.
690 void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution)
692 unsigned char params[] = { 0, 1, 2, 2, 3 };
694 if (resolution == 0 || resolution > 200)
697 ps2_command(&psmouse->ps2dev, ¶ms[resolution / 50], PSMOUSE_CMD_SETRES);
698 psmouse->resolution = 25 << params[resolution / 50];
702 * Here we set the mouse report rate.
705 static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate)
707 unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 };
710 while (rates[i] > rate) i++;
711 ps2_command(&psmouse->ps2dev, &rates[i], PSMOUSE_CMD_SETRATE);
712 psmouse->rate = rates[i];
716 * psmouse_initialize() initializes the mouse to a sane state.
719 static void psmouse_initialize(struct psmouse *psmouse)
722 * We set the mouse into streaming mode.
725 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM);
728 * We set the mouse report rate, resolution and scaling.
731 if (psmouse_max_proto != PSMOUSE_PS2) {
732 psmouse->set_rate(psmouse, psmouse->rate);
733 psmouse->set_resolution(psmouse, psmouse->resolution);
734 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
739 * psmouse_set_state() sets new psmouse state and resets all flags and
740 * counters while holding serio lock so fighting with interrupt handler
744 static void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state)
746 serio_pause_rx(psmouse->ps2dev.serio);
747 psmouse->state = new_state;
748 psmouse->pktcnt = psmouse->out_of_sync = 0;
749 psmouse->ps2dev.flags = 0;
750 serio_continue_rx(psmouse->ps2dev.serio);
754 * psmouse_activate() enables the mouse so that we get motion reports from it.
757 static void psmouse_activate(struct psmouse *psmouse)
759 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE))
760 printk(KERN_WARNING "psmouse.c: Failed to enable mouse on %s\n",
761 psmouse->ps2dev.serio->phys);
763 psmouse_set_state(psmouse, PSMOUSE_ACTIVATED);
768 * psmouse_deactivate() puts the mouse into poll mode so that we don't get motion
769 * reports from it unless we explicitely request it.
772 static void psmouse_deactivate(struct psmouse *psmouse)
774 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE))
775 printk(KERN_WARNING "psmouse.c: Failed to deactivate mouse on %s\n",
776 psmouse->ps2dev.serio->phys);
778 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
783 * psmouse_cleanup() resets the mouse into power-on state.
786 static void psmouse_cleanup(struct serio *serio)
788 struct psmouse *psmouse = serio_get_drvdata(serio);
790 psmouse_reset(psmouse);
794 * psmouse_disconnect() closes and frees.
797 static void psmouse_disconnect(struct serio *serio)
799 struct psmouse *psmouse, *parent = NULL;
801 psmouse = serio_get_drvdata(serio);
803 device_remove_file(&serio->dev, &psmouse_attr_protocol);
804 device_remove_file(&serio->dev, &psmouse_attr_rate);
805 device_remove_file(&serio->dev, &psmouse_attr_resolution);
806 device_remove_file(&serio->dev, &psmouse_attr_resetafter);
810 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
812 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
813 parent = serio_get_drvdata(serio->parent);
814 psmouse_deactivate(parent);
817 if (psmouse->disconnect)
818 psmouse->disconnect(psmouse);
820 if (parent && parent->pt_deactivate)
821 parent->pt_deactivate(parent);
823 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
825 input_unregister_device(&psmouse->dev);
827 serio_set_drvdata(serio, NULL);
831 psmouse_activate(parent);
836 static int psmouse_switch_protocol(struct psmouse *psmouse, struct psmouse_protocol *proto)
838 memset(&psmouse->dev, 0, sizeof(struct input_dev));
840 init_input_dev(&psmouse->dev);
842 psmouse->dev.private = psmouse;
843 psmouse->dev.dev = &psmouse->ps2dev.serio->dev;
845 psmouse->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
846 psmouse->dev.keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
847 psmouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y);
849 psmouse->set_rate = psmouse_set_rate;
850 psmouse->set_resolution = psmouse_set_resolution;
851 psmouse->protocol_handler = psmouse_process_byte;
852 psmouse->pktsize = 3;
854 if (proto && (proto->detect || proto->init)) {
855 if (proto->detect && proto->detect(psmouse, 1) < 0)
858 if (proto->init && proto->init(psmouse) < 0)
861 psmouse->type = proto->type;
864 psmouse->type = psmouse_extensions(psmouse, psmouse_max_proto, 1);
866 sprintf(psmouse->devname, "%s %s %s",
867 psmouse_protocol_by_type(psmouse->type)->name, psmouse->vendor, psmouse->name);
869 psmouse->dev.name = psmouse->devname;
870 psmouse->dev.phys = psmouse->phys;
871 psmouse->dev.id.bustype = BUS_I8042;
872 psmouse->dev.id.vendor = 0x0002;
873 psmouse->dev.id.product = psmouse->type;
874 psmouse->dev.id.version = psmouse->model;
880 * psmouse_connect() is a callback from the serio module when
881 * an unhandled serio port is found.
883 static int psmouse_connect(struct serio *serio, struct serio_driver *drv)
885 struct psmouse *psmouse, *parent = NULL;
891 * If this is a pass-through port deactivate parent so the device
892 * connected to this port can be successfully identified
894 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
895 parent = serio_get_drvdata(serio->parent);
896 psmouse_deactivate(parent);
899 if (!(psmouse = kcalloc(1, sizeof(struct psmouse), GFP_KERNEL))) {
904 ps2_init(&psmouse->ps2dev, serio);
905 sprintf(psmouse->phys, "%s/input0", serio->phys);
907 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
909 serio_set_drvdata(serio, psmouse);
911 retval = serio_open(serio, drv);
913 serio_set_drvdata(serio, NULL);
918 if (psmouse_probe(psmouse) < 0) {
920 serio_set_drvdata(serio, NULL);
926 psmouse->rate = psmouse_rate;
927 psmouse->resolution = psmouse_resolution;
928 psmouse->resetafter = psmouse_resetafter;
929 psmouse->smartscroll = psmouse_smartscroll;
931 psmouse_switch_protocol(psmouse, NULL);
933 input_register_device(&psmouse->dev);
934 printk(KERN_INFO "input: %s on %s\n", psmouse->devname, serio->phys);
936 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
938 psmouse_initialize(psmouse);
940 if (parent && parent->pt_activate)
941 parent->pt_activate(parent);
943 device_create_file(&serio->dev, &psmouse_attr_protocol);
944 device_create_file(&serio->dev, &psmouse_attr_rate);
945 device_create_file(&serio->dev, &psmouse_attr_resolution);
946 device_create_file(&serio->dev, &psmouse_attr_resetafter);
948 psmouse_activate(psmouse);
953 /* If this is a pass-through port the parent needs to be re-activated */
955 psmouse_activate(parent);
962 static int psmouse_reconnect(struct serio *serio)
964 struct psmouse *psmouse = serio_get_drvdata(serio);
965 struct psmouse *parent = NULL;
966 struct serio_driver *drv = serio->drv;
969 if (!drv || !psmouse) {
970 printk(KERN_DEBUG "psmouse: reconnect request, but serio is disconnected, ignoring...\n");
976 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
977 parent = serio_get_drvdata(serio->parent);
978 psmouse_deactivate(parent);
981 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
983 if (psmouse->reconnect) {
984 if (psmouse->reconnect(psmouse))
986 } else if (psmouse_probe(psmouse) < 0 ||
987 psmouse->type != psmouse_extensions(psmouse, psmouse_max_proto, 0))
990 /* ok, the device type (and capabilities) match the old one,
991 * we can continue using it, complete intialization
993 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
995 psmouse_initialize(psmouse);
997 if (parent && parent->pt_activate)
998 parent->pt_activate(parent);
1000 psmouse_activate(psmouse);
1004 /* If this is a pass-through port the parent waits to be activated */
1006 psmouse_activate(parent);
1012 static struct serio_device_id psmouse_serio_ids[] = {
1020 .type = SERIO_PS_PSTHRU,
1028 MODULE_DEVICE_TABLE(serio, psmouse_serio_ids);
1030 static struct serio_driver psmouse_drv = {
1034 .description = DRIVER_DESC,
1035 .id_table = psmouse_serio_ids,
1036 .interrupt = psmouse_interrupt,
1037 .connect = psmouse_connect,
1038 .reconnect = psmouse_reconnect,
1039 .disconnect = psmouse_disconnect,
1040 .cleanup = psmouse_cleanup,
1043 ssize_t psmouse_attr_show_helper(struct device *dev, char *buf,
1044 ssize_t (*handler)(struct psmouse *, char *))
1046 struct serio *serio = to_serio_port(dev);
1049 retval = serio_pin_driver(serio);
1053 if (serio->drv != &psmouse_drv) {
1058 retval = handler(serio_get_drvdata(serio), buf);
1061 serio_unpin_driver(serio);
1065 ssize_t psmouse_attr_set_helper(struct device *dev, const char *buf, size_t count,
1066 ssize_t (*handler)(struct psmouse *, const char *, size_t))
1068 struct serio *serio = to_serio_port(dev);
1069 struct psmouse *psmouse = serio_get_drvdata(serio);
1070 struct psmouse *parent = NULL;
1073 retval = serio_pin_driver(serio);
1077 if (serio->drv != &psmouse_drv) {
1082 retval = down_interruptible(&psmouse_sem);
1086 if (psmouse->state == PSMOUSE_IGNORE) {
1091 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1092 parent = serio_get_drvdata(serio->parent);
1093 psmouse_deactivate(parent);
1096 psmouse_deactivate(psmouse);
1098 retval = handler(psmouse, buf, count);
1100 if (retval != -ENODEV)
1101 psmouse_activate(psmouse);
1104 psmouse_activate(parent);
1109 serio_unpin_driver(serio);
1113 static ssize_t psmouse_attr_show_protocol(struct psmouse *psmouse, char *buf)
1115 return sprintf(buf, "%s\n", psmouse_protocol_by_type(psmouse->type)->name);
1118 static ssize_t psmouse_attr_set_protocol(struct psmouse *psmouse, const char *buf, size_t count)
1120 struct serio *serio = psmouse->ps2dev.serio;
1121 struct psmouse *parent = NULL;
1122 struct psmouse_protocol *proto;
1125 if (!(proto = psmouse_protocol_by_name(buf, count)))
1128 if (psmouse->type == proto->type)
1131 while (serio->child) {
1133 printk(KERN_WARNING "psmouse: failed to destroy child port, protocol change aborted.\n");
1138 serio_unpin_driver(serio);
1139 serio_unregister_child_port(serio);
1140 serio_pin_driver_uninterruptible(serio);
1143 if (serio->drv != &psmouse_drv)
1146 if (psmouse->type == proto->type)
1147 return count; /* switched by other thread */
1150 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1151 parent = serio_get_drvdata(serio->parent);
1152 if (parent->pt_deactivate)
1153 parent->pt_deactivate(parent);
1156 if (psmouse->disconnect)
1157 psmouse->disconnect(psmouse);
1159 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
1160 input_unregister_device(&psmouse->dev);
1162 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
1164 if (psmouse_switch_protocol(psmouse, proto) < 0) {
1165 psmouse_reset(psmouse);
1166 /* default to PSMOUSE_PS2 */
1167 psmouse_switch_protocol(psmouse, &psmouse_protocols[0]);
1170 psmouse_initialize(psmouse);
1171 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1173 input_register_device(&psmouse->dev);
1174 printk(KERN_INFO "input: %s on %s\n", psmouse->devname, serio->phys);
1176 if (parent && parent->pt_activate)
1177 parent->pt_activate(parent);
1182 static ssize_t psmouse_attr_show_rate(struct psmouse *psmouse, char *buf)
1184 return sprintf(buf, "%d\n", psmouse->rate);
1187 static ssize_t psmouse_attr_set_rate(struct psmouse *psmouse, const char *buf, size_t count)
1189 unsigned long value;
1192 value = simple_strtoul(buf, &rest, 10);
1196 psmouse->set_rate(psmouse, value);
1200 static ssize_t psmouse_attr_show_resolution(struct psmouse *psmouse, char *buf)
1202 return sprintf(buf, "%d\n", psmouse->resolution);
1205 static ssize_t psmouse_attr_set_resolution(struct psmouse *psmouse, const char *buf, size_t count)
1207 unsigned long value;
1210 value = simple_strtoul(buf, &rest, 10);
1214 psmouse->set_resolution(psmouse, value);
1218 static ssize_t psmouse_attr_show_resetafter(struct psmouse *psmouse, char *buf)
1220 return sprintf(buf, "%d\n", psmouse->resetafter);
1223 static ssize_t psmouse_attr_set_resetafter(struct psmouse *psmouse, const char *buf, size_t count)
1225 unsigned long value;
1228 value = simple_strtoul(buf, &rest, 10);
1232 psmouse->resetafter = value;
1236 static int psmouse_set_maxproto(const char *val, struct kernel_param *kp)
1238 struct psmouse_protocol *proto;
1243 proto = psmouse_protocol_by_name(val, strlen(val));
1245 if (!proto || !proto->maxproto)
1248 *((unsigned int *)kp->arg) = proto->type;
1253 static int psmouse_get_maxproto(char *buffer, struct kernel_param *kp)
1255 int type = *((unsigned int *)kp->arg);
1257 return sprintf(buffer, "%s\n", psmouse_protocol_by_type(type)->name);
1260 static int __init psmouse_init(void)
1262 serio_register_driver(&psmouse_drv);
1266 static void __exit psmouse_exit(void)
1268 serio_unregister_driver(&psmouse_drv);
1271 module_init(psmouse_init);
1272 module_exit(psmouse_exit);