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, S_IWUSR | S_IRUGO,
63 psmouse_attr_show_protocol, psmouse_attr_set_protocol);
64 PSMOUSE_DEFINE_ATTR(rate, S_IWUSR | S_IRUGO,
65 (void *) offsetof(struct psmouse, rate),
66 psmouse_show_int_attr, psmouse_attr_set_rate);
67 PSMOUSE_DEFINE_ATTR(resolution, S_IWUSR | S_IRUGO,
68 (void *) offsetof(struct psmouse, resolution),
69 psmouse_show_int_attr, psmouse_attr_set_resolution);
70 PSMOUSE_DEFINE_ATTR(resetafter, S_IWUSR | S_IRUGO,
71 (void *) offsetof(struct psmouse, resetafter),
72 psmouse_show_int_attr, psmouse_set_int_attr);
74 static struct attribute *psmouse_attributes[] = {
75 &psmouse_attr_protocol.dattr.attr,
76 &psmouse_attr_rate.dattr.attr,
77 &psmouse_attr_resolution.dattr.attr,
78 &psmouse_attr_resetafter.dattr.attr,
82 static struct attribute_group psmouse_attribute_group = {
83 .attrs = psmouse_attributes,
86 __obsolete_setup("psmouse_noext");
87 __obsolete_setup("psmouse_resolution=");
88 __obsolete_setup("psmouse_smartscroll=");
89 __obsolete_setup("psmouse_resetafter=");
90 __obsolete_setup("psmouse_rate=");
93 * psmouse_sem protects all operations changing state of mouse
94 * (connecting, disconnecting, changing rate or resolution via
95 * sysfs). We could use a per-device semaphore but since there
96 * rarely more than one PS/2 mouse connected and since semaphore
97 * is taken in "slow" paths it is not worth it.
99 static DECLARE_MUTEX(psmouse_sem);
101 struct psmouse_protocol {
102 enum psmouse_type type;
106 int (*detect)(struct psmouse *, int);
107 int (*init)(struct psmouse *);
111 * psmouse_process_byte() analyzes the PS/2 data stream and reports
112 * relevant events to the input module once full packet has arrived.
115 static psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse, struct pt_regs *regs)
117 struct input_dev *dev = psmouse->dev;
118 unsigned char *packet = psmouse->packet;
120 if (psmouse->pktcnt < psmouse->pktsize)
121 return PSMOUSE_GOOD_DATA;
124 * Full packet accumulated, process it
127 input_regs(dev, regs);
130 * Scroll wheel on IntelliMice, scroll buttons on NetMice
133 if (psmouse->type == PSMOUSE_IMPS || psmouse->type == PSMOUSE_GENPS)
134 input_report_rel(dev, REL_WHEEL, -(signed char) packet[3]);
137 * Scroll wheel and buttons on IntelliMouse Explorer
140 if (psmouse->type == PSMOUSE_IMEX) {
141 input_report_rel(dev, REL_WHEEL, (int) (packet[3] & 8) - (int) (packet[3] & 7));
142 input_report_key(dev, BTN_SIDE, (packet[3] >> 4) & 1);
143 input_report_key(dev, BTN_EXTRA, (packet[3] >> 5) & 1);
147 * Extra buttons on Genius NewNet 3D
150 if (psmouse->type == PSMOUSE_GENPS) {
151 input_report_key(dev, BTN_SIDE, (packet[0] >> 6) & 1);
152 input_report_key(dev, BTN_EXTRA, (packet[0] >> 7) & 1);
156 * Extra button on ThinkingMouse
158 if (psmouse->type == PSMOUSE_THINKPS) {
159 input_report_key(dev, BTN_EXTRA, (packet[0] >> 3) & 1);
160 /* Without this bit of weirdness moving up gives wildly high Y changes. */
161 packet[1] |= (packet[0] & 0x40) << 1;
168 input_report_key(dev, BTN_LEFT, packet[0] & 1);
169 input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1);
170 input_report_key(dev, BTN_RIGHT, (packet[0] >> 1) & 1);
172 input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0);
173 input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0);
177 return PSMOUSE_FULL_PACKET;
181 * psmouse_interrupt() handles incoming characters, either gathering them into
182 * packets or passing them to the command routine as command output.
185 static irqreturn_t psmouse_interrupt(struct serio *serio,
186 unsigned char data, unsigned int flags, struct pt_regs *regs)
188 struct psmouse *psmouse = serio_get_drvdata(serio);
191 if (psmouse->state == PSMOUSE_IGNORE)
194 if (flags & (SERIO_PARITY|SERIO_TIMEOUT)) {
195 if (psmouse->state == PSMOUSE_ACTIVATED)
196 printk(KERN_WARNING "psmouse.c: bad data from KBC -%s%s\n",
197 flags & SERIO_TIMEOUT ? " timeout" : "",
198 flags & SERIO_PARITY ? " bad parity" : "");
199 ps2_cmd_aborted(&psmouse->ps2dev);
203 if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_ACK))
204 if (ps2_handle_ack(&psmouse->ps2dev, data))
207 if (unlikely(psmouse->ps2dev.flags & PS2_FLAG_CMD))
208 if (ps2_handle_response(&psmouse->ps2dev, data))
211 if (psmouse->state == PSMOUSE_INITIALIZING)
214 if (psmouse->state == PSMOUSE_ACTIVATED &&
215 psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) {
216 printk(KERN_WARNING "psmouse.c: %s at %s lost synchronization, throwing %d bytes away.\n",
217 psmouse->name, psmouse->phys, psmouse->pktcnt);
221 psmouse->last = jiffies;
222 psmouse->packet[psmouse->pktcnt++] = data;
224 if (psmouse->packet[0] == PSMOUSE_RET_BAT) {
225 if (psmouse->pktcnt == 1)
228 if (psmouse->pktcnt == 2) {
229 if (psmouse->packet[1] == PSMOUSE_RET_ID) {
230 psmouse->state = PSMOUSE_IGNORE;
231 serio_reconnect(serio);
234 if (psmouse->type == PSMOUSE_SYNAPTICS) {
235 /* neither 0xAA nor 0x00 are valid first bytes
236 * for a packet in absolute mode
244 rc = psmouse->protocol_handler(psmouse, regs);
247 case PSMOUSE_BAD_DATA:
248 printk(KERN_WARNING "psmouse.c: %s at %s lost sync at byte %d\n",
249 psmouse->name, psmouse->phys, psmouse->pktcnt);
252 if (++psmouse->out_of_sync == psmouse->resetafter) {
253 psmouse->state = PSMOUSE_IGNORE;
254 printk(KERN_NOTICE "psmouse.c: issuing reconnect request\n");
255 serio_reconnect(psmouse->ps2dev.serio);
259 case PSMOUSE_FULL_PACKET:
261 if (psmouse->out_of_sync) {
262 psmouse->out_of_sync = 0;
263 printk(KERN_NOTICE "psmouse.c: %s at %s - driver resynched.\n",
264 psmouse->name, psmouse->phys);
268 case PSMOUSE_GOOD_DATA:
277 * psmouse_sliced_command() sends an extended PS/2 command to the mouse
278 * using sliced syntax, understood by advanced devices, such as Logitech
279 * or Synaptics touchpads. The command is encoded as:
280 * 0xE6 0xE8 rr 0xE8 ss 0xE8 tt 0xE8 uu where (rr*64)+(ss*16)+(tt*4)+uu
283 int psmouse_sliced_command(struct psmouse *psmouse, unsigned char command)
287 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11))
290 for (i = 6; i >= 0; i -= 2) {
291 unsigned char d = (command >> i) & 3;
292 if (ps2_command(&psmouse->ps2dev, &d, PSMOUSE_CMD_SETRES))
301 * psmouse_reset() resets the mouse into power-on state.
303 int psmouse_reset(struct psmouse *psmouse)
305 unsigned char param[2];
307 if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_RESET_BAT))
310 if (param[0] != PSMOUSE_RET_BAT && param[1] != PSMOUSE_RET_ID)
318 * Genius NetMouse magic init.
320 static int genius_detect(struct psmouse *psmouse, int set_properties)
322 struct ps2dev *ps2dev = &psmouse->ps2dev;
323 unsigned char param[4];
326 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
327 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
328 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
329 ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
330 ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
332 if (param[0] != 0x00 || param[1] != 0x33 || param[2] != 0x55)
335 if (set_properties) {
336 set_bit(BTN_EXTRA, psmouse->dev->keybit);
337 set_bit(BTN_SIDE, psmouse->dev->keybit);
338 set_bit(REL_WHEEL, psmouse->dev->relbit);
340 psmouse->vendor = "Genius";
341 psmouse->pktsize = 4;
348 * IntelliMouse magic init.
350 static int intellimouse_detect(struct psmouse *psmouse, int set_properties)
352 struct ps2dev *ps2dev = &psmouse->ps2dev;
353 unsigned char param[2];
356 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
358 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
360 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
361 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
366 if (set_properties) {
367 set_bit(BTN_MIDDLE, psmouse->dev->keybit);
368 set_bit(REL_WHEEL, psmouse->dev->relbit);
370 if (!psmouse->vendor) psmouse->vendor = "Generic";
371 if (!psmouse->name) psmouse->name = "Wheel Mouse";
372 psmouse->pktsize = 4;
379 * Try IntelliMouse/Explorer magic init.
381 static int im_explorer_detect(struct psmouse *psmouse, int set_properties)
383 struct ps2dev *ps2dev = &psmouse->ps2dev;
384 unsigned char param[2];
386 intellimouse_detect(psmouse, 0);
389 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
391 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
393 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
394 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
399 if (set_properties) {
400 set_bit(BTN_MIDDLE, psmouse->dev->keybit);
401 set_bit(REL_WHEEL, psmouse->dev->relbit);
402 set_bit(BTN_SIDE, psmouse->dev->keybit);
403 set_bit(BTN_EXTRA, psmouse->dev->keybit);
405 if (!psmouse->vendor) psmouse->vendor = "Generic";
406 if (!psmouse->name) psmouse->name = "Explorer Mouse";
407 psmouse->pktsize = 4;
414 * Kensington ThinkingMouse / ExpertMouse magic init.
416 static int thinking_detect(struct psmouse *psmouse, int set_properties)
418 struct ps2dev *ps2dev = &psmouse->ps2dev;
419 unsigned char param[2];
420 unsigned char seq[] = { 20, 60, 40, 20, 20, 60, 40, 20, 20, 0 };
424 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE);
426 ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
427 for (i = 0; seq[i]; i++)
428 ps2_command(ps2dev, seq + i, PSMOUSE_CMD_SETRATE);
429 ps2_command(ps2dev, param, PSMOUSE_CMD_GETID);
434 if (set_properties) {
435 set_bit(BTN_EXTRA, psmouse->dev->keybit);
437 psmouse->vendor = "Kensington";
438 psmouse->name = "ThinkingMouse";
445 * Bare PS/2 protocol "detection". Always succeeds.
447 static int ps2bare_detect(struct psmouse *psmouse, int set_properties)
449 if (set_properties) {
450 if (!psmouse->vendor) psmouse->vendor = "Generic";
451 if (!psmouse->name) psmouse->name = "Mouse";
459 * psmouse_extensions() probes for any extensions to the basic PS/2 protocol
460 * the mouse may have.
463 static int psmouse_extensions(struct psmouse *psmouse,
464 unsigned int max_proto, int set_properties)
466 int synaptics_hardware = 0;
469 * We always check for lifebook because it does not disturb mouse
470 * (it only checks DMI information).
472 if (lifebook_detect(psmouse, set_properties) == 0) {
473 if (max_proto > PSMOUSE_IMEX) {
474 if (!set_properties || lifebook_init(psmouse) == 0)
475 return PSMOUSE_LIFEBOOK;
480 * Try Kensington ThinkingMouse (we try first, because synaptics probe
481 * upsets the thinkingmouse).
484 if (max_proto > PSMOUSE_IMEX && thinking_detect(psmouse, set_properties) == 0)
485 return PSMOUSE_THINKPS;
488 * Try Synaptics TouchPad
490 if (max_proto > PSMOUSE_PS2 && synaptics_detect(psmouse, set_properties) == 0) {
491 synaptics_hardware = 1;
493 if (max_proto > PSMOUSE_IMEX) {
494 if (!set_properties || synaptics_init(psmouse) == 0)
495 return PSMOUSE_SYNAPTICS;
497 * Some Synaptics touchpads can emulate extended protocols (like IMPS/2).
498 * Unfortunately Logitech/Genius probes confuse some firmware versions so
499 * we'll have to skip them.
501 max_proto = PSMOUSE_IMEX;
504 * Make sure that touchpad is in relative mode, gestures (taps) are enabled
506 synaptics_reset(psmouse);
512 if (max_proto > PSMOUSE_IMEX) {
513 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
514 if (alps_detect(psmouse, set_properties) == 0) {
515 if (!set_properties || alps_init(psmouse) == 0)
518 * Init failed, try basic relative protocols
520 max_proto = PSMOUSE_IMEX;
524 if (max_proto > PSMOUSE_IMEX && genius_detect(psmouse, set_properties) == 0)
525 return PSMOUSE_GENPS;
527 if (max_proto > PSMOUSE_IMEX && ps2pp_init(psmouse, set_properties) == 0)
528 return PSMOUSE_PS2PP;
530 if (max_proto > PSMOUSE_IMEX && trackpoint_detect(psmouse, set_properties) == 0)
531 return PSMOUSE_TRACKPOINT;
534 * Reset to defaults in case the device got confused by extended
535 * protocol probes. Note that we do full reset becuase some mice
536 * put themselves to sleep when see PSMOUSE_RESET_DIS.
538 psmouse_reset(psmouse);
540 if (max_proto >= PSMOUSE_IMEX && im_explorer_detect(psmouse, set_properties) == 0)
543 if (max_proto >= PSMOUSE_IMPS && intellimouse_detect(psmouse, set_properties) == 0)
547 * Okay, all failed, we have a standard mouse here. The number of the buttons
548 * is still a question, though. We assume 3.
550 ps2bare_detect(psmouse, set_properties);
552 if (synaptics_hardware) {
554 * We detected Synaptics hardware but it did not respond to IMPS/2 probes.
555 * We need to reset the touchpad because if there is a track point on the
556 * pass through port it could get disabled while probing for protocol
559 psmouse_reset(psmouse);
565 static struct psmouse_protocol psmouse_protocols[] = {
571 .detect = ps2bare_detect,
574 .type = PSMOUSE_PS2PP,
577 .detect = ps2pp_init,
580 .type = PSMOUSE_THINKPS,
583 .detect = thinking_detect,
586 .type = PSMOUSE_GENPS,
589 .detect = genius_detect,
592 .type = PSMOUSE_IMPS,
596 .detect = intellimouse_detect,
599 .type = PSMOUSE_IMEX,
603 .detect = im_explorer_detect,
606 .type = PSMOUSE_SYNAPTICS,
608 .alias = "synaptics",
609 .detect = synaptics_detect,
610 .init = synaptics_init,
613 .type = PSMOUSE_ALPS,
616 .detect = alps_detect,
620 .type = PSMOUSE_LIFEBOOK,
623 .init = lifebook_init,
626 .type = PSMOUSE_TRACKPOINT,
628 .alias = "trackpoint",
629 .detect = trackpoint_detect,
632 .type = PSMOUSE_AUTO,
639 static struct psmouse_protocol *psmouse_protocol_by_type(enum psmouse_type type)
643 for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++)
644 if (psmouse_protocols[i].type == type)
645 return &psmouse_protocols[i];
648 return &psmouse_protocols[0];
651 static struct psmouse_protocol *psmouse_protocol_by_name(const char *name, size_t len)
653 struct psmouse_protocol *p;
656 for (i = 0; i < ARRAY_SIZE(psmouse_protocols); i++) {
657 p = &psmouse_protocols[i];
659 if ((strlen(p->name) == len && !strncmp(p->name, name, len)) ||
660 (strlen(p->alias) == len && !strncmp(p->alias, name, len)))
661 return &psmouse_protocols[i];
669 * psmouse_probe() probes for a PS/2 mouse.
672 static int psmouse_probe(struct psmouse *psmouse)
674 struct ps2dev *ps2dev = &psmouse->ps2dev;
675 unsigned char param[2];
678 * First, we check if it's a mouse. It should send 0x00 or 0x03
679 * in case of an IntelliMouse in 4-byte mode or 0x04 for IM Explorer.
680 * Sunrex K8561 IR Keyboard/Mouse reports 0xff on second and subsequent
681 * ID queries, probably due to a firmware bug.
685 if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETID))
688 if (param[0] != 0x00 && param[0] != 0x03 &&
689 param[0] != 0x04 && param[0] != 0xff)
693 * Then we reset and disable the mouse so that it doesn't generate events.
696 if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_DIS))
697 printk(KERN_WARNING "psmouse.c: Failed to reset mouse on %s\n", ps2dev->serio->phys);
703 * Here we set the mouse resolution.
706 void psmouse_set_resolution(struct psmouse *psmouse, unsigned int resolution)
708 unsigned char params[] = { 0, 1, 2, 2, 3 };
710 if (resolution == 0 || resolution > 200)
713 ps2_command(&psmouse->ps2dev, ¶ms[resolution / 50], PSMOUSE_CMD_SETRES);
714 psmouse->resolution = 25 << params[resolution / 50];
718 * Here we set the mouse report rate.
721 static void psmouse_set_rate(struct psmouse *psmouse, unsigned int rate)
723 unsigned char rates[] = { 200, 100, 80, 60, 40, 20, 10, 0 };
726 while (rates[i] > rate) i++;
727 ps2_command(&psmouse->ps2dev, &rates[i], PSMOUSE_CMD_SETRATE);
728 psmouse->rate = rates[i];
732 * psmouse_initialize() initializes the mouse to a sane state.
735 static void psmouse_initialize(struct psmouse *psmouse)
738 * We set the mouse into streaming mode.
741 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM);
744 * We set the mouse report rate, resolution and scaling.
747 if (psmouse_max_proto != PSMOUSE_PS2) {
748 psmouse->set_rate(psmouse, psmouse->rate);
749 psmouse->set_resolution(psmouse, psmouse->resolution);
750 ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11);
755 * psmouse_set_state() sets new psmouse state and resets all flags and
756 * counters while holding serio lock so fighting with interrupt handler
760 static void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state)
762 serio_pause_rx(psmouse->ps2dev.serio);
763 psmouse->state = new_state;
764 psmouse->pktcnt = psmouse->out_of_sync = 0;
765 psmouse->ps2dev.flags = 0;
766 serio_continue_rx(psmouse->ps2dev.serio);
770 * psmouse_activate() enables the mouse so that we get motion reports from it.
773 static void psmouse_activate(struct psmouse *psmouse)
775 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_ENABLE))
776 printk(KERN_WARNING "psmouse.c: Failed to enable mouse on %s\n",
777 psmouse->ps2dev.serio->phys);
779 psmouse_set_state(psmouse, PSMOUSE_ACTIVATED);
784 * psmouse_deactivate() puts the mouse into poll mode so that we don't get motion
785 * reports from it unless we explicitely request it.
788 static void psmouse_deactivate(struct psmouse *psmouse)
790 if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_DISABLE))
791 printk(KERN_WARNING "psmouse.c: Failed to deactivate mouse on %s\n",
792 psmouse->ps2dev.serio->phys);
794 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
799 * psmouse_cleanup() resets the mouse into power-on state.
802 static void psmouse_cleanup(struct serio *serio)
804 struct psmouse *psmouse = serio_get_drvdata(serio);
806 psmouse_reset(psmouse);
810 * psmouse_disconnect() closes and frees.
813 static void psmouse_disconnect(struct serio *serio)
815 struct psmouse *psmouse, *parent = NULL;
817 psmouse = serio_get_drvdata(serio);
819 sysfs_remove_group(&serio->dev.kobj, &psmouse_attribute_group);
823 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
825 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
826 parent = serio_get_drvdata(serio->parent);
827 psmouse_deactivate(parent);
830 if (psmouse->disconnect)
831 psmouse->disconnect(psmouse);
833 if (parent && parent->pt_deactivate)
834 parent->pt_deactivate(parent);
836 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
839 serio_set_drvdata(serio, NULL);
840 input_unregister_device(psmouse->dev);
844 psmouse_activate(parent);
849 static int psmouse_switch_protocol(struct psmouse *psmouse, struct psmouse_protocol *proto)
851 struct input_dev *input_dev = psmouse->dev;
853 input_dev->private = psmouse;
854 input_dev->cdev.dev = &psmouse->ps2dev.serio->dev;
856 input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
857 input_dev->keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
858 input_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y);
860 psmouse->set_rate = psmouse_set_rate;
861 psmouse->set_resolution = psmouse_set_resolution;
862 psmouse->protocol_handler = psmouse_process_byte;
863 psmouse->pktsize = 3;
865 if (proto && (proto->detect || proto->init)) {
866 if (proto->detect && proto->detect(psmouse, 1) < 0)
869 if (proto->init && proto->init(psmouse) < 0)
872 psmouse->type = proto->type;
875 psmouse->type = psmouse_extensions(psmouse, psmouse_max_proto, 1);
877 sprintf(psmouse->devname, "%s %s %s",
878 psmouse_protocol_by_type(psmouse->type)->name, psmouse->vendor, psmouse->name);
880 input_dev->name = psmouse->devname;
881 input_dev->phys = psmouse->phys;
882 input_dev->id.bustype = BUS_I8042;
883 input_dev->id.vendor = 0x0002;
884 input_dev->id.product = psmouse->type;
885 input_dev->id.version = psmouse->model;
891 * psmouse_connect() is a callback from the serio module when
892 * an unhandled serio port is found.
894 static int psmouse_connect(struct serio *serio, struct serio_driver *drv)
896 struct psmouse *psmouse, *parent = NULL;
897 struct input_dev *input_dev;
898 int retval = -ENOMEM;
903 * If this is a pass-through port deactivate parent so the device
904 * connected to this port can be successfully identified
906 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
907 parent = serio_get_drvdata(serio->parent);
908 psmouse_deactivate(parent);
911 psmouse = kzalloc(sizeof(struct psmouse), GFP_KERNEL);
912 input_dev = input_allocate_device();
913 if (!psmouse || !input_dev)
916 ps2_init(&psmouse->ps2dev, serio);
917 psmouse->dev = input_dev;
918 sprintf(psmouse->phys, "%s/input0", serio->phys);
920 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
922 serio_set_drvdata(serio, psmouse);
924 retval = serio_open(serio, drv);
928 if (psmouse_probe(psmouse) < 0) {
934 psmouse->rate = psmouse_rate;
935 psmouse->resolution = psmouse_resolution;
936 psmouse->resetafter = psmouse_resetafter;
937 psmouse->smartscroll = psmouse_smartscroll;
939 psmouse_switch_protocol(psmouse, NULL);
941 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
942 psmouse_initialize(psmouse);
944 input_register_device(psmouse->dev);
946 if (parent && parent->pt_activate)
947 parent->pt_activate(parent);
949 sysfs_create_group(&serio->dev.kobj, &psmouse_attribute_group);
951 psmouse_activate(psmouse);
957 serio_set_drvdata(serio, NULL);
958 input_free_device(input_dev);
962 /* If this is a pass-through port the parent needs to be re-activated */
964 psmouse_activate(parent);
971 static int psmouse_reconnect(struct serio *serio)
973 struct psmouse *psmouse = serio_get_drvdata(serio);
974 struct psmouse *parent = NULL;
975 struct serio_driver *drv = serio->drv;
978 if (!drv || !psmouse) {
979 printk(KERN_DEBUG "psmouse: reconnect request, but serio is disconnected, ignoring...\n");
985 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
986 parent = serio_get_drvdata(serio->parent);
987 psmouse_deactivate(parent);
990 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
992 if (psmouse->reconnect) {
993 if (psmouse->reconnect(psmouse))
995 } else if (psmouse_probe(psmouse) < 0 ||
996 psmouse->type != psmouse_extensions(psmouse, psmouse_max_proto, 0))
999 /* ok, the device type (and capabilities) match the old one,
1000 * we can continue using it, complete intialization
1002 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1004 psmouse_initialize(psmouse);
1006 if (parent && parent->pt_activate)
1007 parent->pt_activate(parent);
1009 psmouse_activate(psmouse);
1013 /* If this is a pass-through port the parent waits to be activated */
1015 psmouse_activate(parent);
1021 static struct serio_device_id psmouse_serio_ids[] = {
1029 .type = SERIO_PS_PSTHRU,
1037 MODULE_DEVICE_TABLE(serio, psmouse_serio_ids);
1039 static struct serio_driver psmouse_drv = {
1043 .description = DRIVER_DESC,
1044 .id_table = psmouse_serio_ids,
1045 .interrupt = psmouse_interrupt,
1046 .connect = psmouse_connect,
1047 .reconnect = psmouse_reconnect,
1048 .disconnect = psmouse_disconnect,
1049 .cleanup = psmouse_cleanup,
1052 ssize_t psmouse_attr_show_helper(struct device *dev, struct device_attribute *devattr,
1055 struct serio *serio = to_serio_port(dev);
1056 struct psmouse_attribute *attr = to_psmouse_attr(devattr);
1057 struct psmouse *psmouse;
1060 retval = serio_pin_driver(serio);
1064 if (serio->drv != &psmouse_drv) {
1069 psmouse = serio_get_drvdata(serio);
1071 retval = attr->show(psmouse, attr->data, buf);
1074 serio_unpin_driver(serio);
1078 ssize_t psmouse_attr_set_helper(struct device *dev, struct device_attribute *devattr,
1079 const char *buf, size_t count)
1081 struct serio *serio = to_serio_port(dev);
1082 struct psmouse_attribute *attr = to_psmouse_attr(devattr);
1083 struct psmouse *psmouse, *parent = NULL;
1086 retval = serio_pin_driver(serio);
1090 if (serio->drv != &psmouse_drv) {
1095 retval = down_interruptible(&psmouse_sem);
1099 psmouse = serio_get_drvdata(serio);
1101 if (psmouse->state == PSMOUSE_IGNORE) {
1106 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1107 parent = serio_get_drvdata(serio->parent);
1108 psmouse_deactivate(parent);
1111 psmouse_deactivate(psmouse);
1113 retval = attr->set(psmouse, attr->data, buf, count);
1115 if (retval != -ENODEV)
1116 psmouse_activate(psmouse);
1119 psmouse_activate(parent);
1124 serio_unpin_driver(serio);
1128 static ssize_t psmouse_show_int_attr(struct psmouse *psmouse, void *offset, char *buf)
1130 unsigned long *field = (unsigned long *)((char *)psmouse + (size_t)offset);
1132 return sprintf(buf, "%lu\n", *field);
1135 static ssize_t psmouse_set_int_attr(struct psmouse *psmouse, void *offset, const char *buf, size_t count)
1137 unsigned long *field = (unsigned long *)((char *)psmouse + (size_t)offset);
1138 unsigned long value;
1141 value = simple_strtoul(buf, &rest, 10);
1150 static ssize_t psmouse_attr_show_protocol(struct psmouse *psmouse, void *data, char *buf)
1152 return sprintf(buf, "%s\n", psmouse_protocol_by_type(psmouse->type)->name);
1155 static ssize_t psmouse_attr_set_protocol(struct psmouse *psmouse, void *data, const char *buf, size_t count)
1157 struct serio *serio = psmouse->ps2dev.serio;
1158 struct psmouse *parent = NULL;
1159 struct input_dev *new_dev;
1160 struct psmouse_protocol *proto;
1163 if (!(proto = psmouse_protocol_by_name(buf, count)))
1166 if (psmouse->type == proto->type)
1169 if (!(new_dev = input_allocate_device()))
1172 while (serio->child) {
1174 printk(KERN_WARNING "psmouse: failed to destroy child port, protocol change aborted.\n");
1175 input_free_device(new_dev);
1180 serio_unpin_driver(serio);
1181 serio_unregister_child_port(serio);
1182 serio_pin_driver_uninterruptible(serio);
1185 if (serio->drv != &psmouse_drv) {
1186 input_free_device(new_dev);
1190 if (psmouse->type == proto->type) {
1191 input_free_device(new_dev);
1192 return count; /* switched by other thread */
1196 if (serio->parent && serio->id.type == SERIO_PS_PSTHRU) {
1197 parent = serio_get_drvdata(serio->parent);
1198 if (parent->pt_deactivate)
1199 parent->pt_deactivate(parent);
1202 if (psmouse->disconnect)
1203 psmouse->disconnect(psmouse);
1205 psmouse_set_state(psmouse, PSMOUSE_IGNORE);
1206 input_unregister_device(psmouse->dev);
1208 psmouse->dev = new_dev;
1209 psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
1211 if (psmouse_switch_protocol(psmouse, proto) < 0) {
1212 psmouse_reset(psmouse);
1213 /* default to PSMOUSE_PS2 */
1214 psmouse_switch_protocol(psmouse, &psmouse_protocols[0]);
1217 psmouse_initialize(psmouse);
1218 psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
1220 input_register_device(psmouse->dev);
1222 if (parent && parent->pt_activate)
1223 parent->pt_activate(parent);
1228 static ssize_t psmouse_attr_set_rate(struct psmouse *psmouse, void *data, const char *buf, size_t count)
1230 unsigned long value;
1233 value = simple_strtoul(buf, &rest, 10);
1237 psmouse->set_rate(psmouse, value);
1241 static ssize_t psmouse_attr_set_resolution(struct psmouse *psmouse, void *data, const char *buf, size_t count)
1243 unsigned long value;
1246 value = simple_strtoul(buf, &rest, 10);
1250 psmouse->set_resolution(psmouse, value);
1255 static int psmouse_set_maxproto(const char *val, struct kernel_param *kp)
1257 struct psmouse_protocol *proto;
1262 proto = psmouse_protocol_by_name(val, strlen(val));
1264 if (!proto || !proto->maxproto)
1267 *((unsigned int *)kp->arg) = proto->type;
1272 static int psmouse_get_maxproto(char *buffer, struct kernel_param *kp)
1274 int type = *((unsigned int *)kp->arg);
1276 return sprintf(buffer, "%s\n", psmouse_protocol_by_type(type)->name);
1279 static int __init psmouse_init(void)
1281 serio_register_driver(&psmouse_drv);
1285 static void __exit psmouse_exit(void)
1287 serio_unregister_driver(&psmouse_drv);
1290 module_init(psmouse_init);
1291 module_exit(psmouse_exit);