2 * Synaptics TouchPad PS/2 mouse driver
4 * 2003 Dmitry Torokhov <dtor@mail.ru>
5 * Added support for pass-through port. Special thanks to Peter Berg Larsen
6 * for explaining various Synaptics quirks.
8 * 2003 Peter Osterlund <petero2@telia.com>
9 * Ported to 2.5 input device infrastructure.
11 * Copyright (C) 2001 Stefan Gmeiner <riddlebox@freesurf.ch>
12 * start merging tpconfig and gpm code to a xfree-input module
13 * adding some changes and extensions (ex. 3rd and 4th button)
15 * Copyright (c) 1997 C. Scott Ananian <cananian@alumni.priceton.edu>
16 * Copyright (c) 1998-2000 Bruce Kalk <kall@compass.com>
17 * code for the special synaptics commands (from the tpconfig-source)
19 * This program is free software; you can redistribute it and/or modify it
20 * under the terms of the GNU General Public License version 2 as published by
21 * the Free Software Foundation.
23 * Trademarks are the property of their respective owners.
26 #include <linux/module.h>
27 #include <linux/dmi.h>
28 #include <linux/input/mt.h>
29 #include <linux/serio.h>
30 #include <linux/libps2.h>
31 #include <linux/slab.h>
33 #include "synaptics.h"
36 * The x/y limits are taken from the Synaptics TouchPad interfacing Guide,
37 * section 2.3.2, which says that they should be valid regardless of the
38 * actual size of the sensor.
39 * Note that newer firmware allows querying device for maximum useable
42 #define XMIN_NOMINAL 1472
43 #define XMAX_NOMINAL 5472
44 #define YMIN_NOMINAL 1408
45 #define YMAX_NOMINAL 4448
48 * Synaptics touchpads report the y coordinate from bottom to top, which is
49 * opposite from what userspace expects.
50 * This function is used to invert y before reporting.
52 static int synaptics_invert_y(int y
)
54 return YMAX_NOMINAL
+ YMIN_NOMINAL
- y
;
58 /*****************************************************************************
59 * Stuff we need even when we do not want native Synaptics support
60 ****************************************************************************/
63 * Set the synaptics touchpad mode byte by special commands
65 static int synaptics_mode_cmd(struct psmouse
*psmouse
, unsigned char mode
)
67 unsigned char param
[1];
69 if (psmouse_sliced_command(psmouse
, mode
))
71 param
[0] = SYN_PS_SET_MODE2
;
72 if (ps2_command(&psmouse
->ps2dev
, param
, PSMOUSE_CMD_SETRATE
))
77 int synaptics_detect(struct psmouse
*psmouse
, bool set_properties
)
79 struct ps2dev
*ps2dev
= &psmouse
->ps2dev
;
80 unsigned char param
[4];
84 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRES
);
85 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRES
);
86 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRES
);
87 ps2_command(ps2dev
, param
, PSMOUSE_CMD_SETRES
);
88 ps2_command(ps2dev
, param
, PSMOUSE_CMD_GETINFO
);
94 psmouse
->vendor
= "Synaptics";
95 psmouse
->name
= "TouchPad";
101 void synaptics_reset(struct psmouse
*psmouse
)
103 /* reset touchpad back to relative mode, gestures enabled */
104 synaptics_mode_cmd(psmouse
, 0);
107 #ifdef CONFIG_MOUSE_PS2_SYNAPTICS
109 /*****************************************************************************
110 * Synaptics communications functions
111 ****************************************************************************/
114 * Send a command to the synpatics touchpad by special commands
116 static int synaptics_send_cmd(struct psmouse
*psmouse
, unsigned char c
, unsigned char *param
)
118 if (psmouse_sliced_command(psmouse
, c
))
120 if (ps2_command(&psmouse
->ps2dev
, param
, PSMOUSE_CMD_GETINFO
))
126 * Read the model-id bytes from the touchpad
127 * see also SYN_MODEL_* macros
129 static int synaptics_model_id(struct psmouse
*psmouse
)
131 struct synaptics_data
*priv
= psmouse
->private;
134 if (synaptics_send_cmd(psmouse
, SYN_QUE_MODEL
, mi
))
136 priv
->model_id
= (mi
[0]<<16) | (mi
[1]<<8) | mi
[2];
141 * Read the capability-bits from the touchpad
142 * see also the SYN_CAP_* macros
144 static int synaptics_capability(struct psmouse
*psmouse
)
146 struct synaptics_data
*priv
= psmouse
->private;
147 unsigned char cap
[3];
149 if (synaptics_send_cmd(psmouse
, SYN_QUE_CAPABILITIES
, cap
))
151 priv
->capabilities
= (cap
[0] << 16) | (cap
[1] << 8) | cap
[2];
152 priv
->ext_cap
= priv
->ext_cap_0c
= 0;
155 * Older firmwares had submodel ID fixed to 0x47
157 if (SYN_ID_FULL(priv
->identity
) < 0x705 &&
158 SYN_CAP_SUBMODEL_ID(priv
->capabilities
) != 0x47) {
163 * Unless capExtended is set the rest of the flags should be ignored
165 if (!SYN_CAP_EXTENDED(priv
->capabilities
))
166 priv
->capabilities
= 0;
168 if (SYN_EXT_CAP_REQUESTS(priv
->capabilities
) >= 1) {
169 if (synaptics_send_cmd(psmouse
, SYN_QUE_EXT_CAPAB
, cap
)) {
170 printk(KERN_ERR
"Synaptics claims to have extended capabilities,"
171 " but I'm not able to read them.\n");
173 priv
->ext_cap
= (cap
[0] << 16) | (cap
[1] << 8) | cap
[2];
176 * if nExtBtn is greater than 8 it should be considered
177 * invalid and treated as 0
179 if (SYN_CAP_MULTI_BUTTON_NO(priv
->ext_cap
) > 8)
180 priv
->ext_cap
&= 0xff0fff;
184 if (SYN_EXT_CAP_REQUESTS(priv
->capabilities
) >= 4) {
185 if (synaptics_send_cmd(psmouse
, SYN_QUE_EXT_CAPAB_0C
, cap
)) {
186 printk(KERN_ERR
"Synaptics claims to have extended capability 0x0c,"
187 " but I'm not able to read it.\n");
189 priv
->ext_cap_0c
= (cap
[0] << 16) | (cap
[1] << 8) | cap
[2];
198 * See also the SYN_ID_* macros
200 static int synaptics_identify(struct psmouse
*psmouse
)
202 struct synaptics_data
*priv
= psmouse
->private;
205 if (synaptics_send_cmd(psmouse
, SYN_QUE_IDENTIFY
, id
))
207 priv
->identity
= (id
[0]<<16) | (id
[1]<<8) | id
[2];
208 if (SYN_ID_IS_SYNAPTICS(priv
->identity
))
214 * Read touchpad resolution and maximum reported coordinates
215 * Resolution is left zero if touchpad does not support the query
217 static int synaptics_resolution(struct psmouse
*psmouse
)
219 struct synaptics_data
*priv
= psmouse
->private;
220 unsigned char resp
[3];
222 if (SYN_ID_MAJOR(priv
->identity
) < 4)
225 if (synaptics_send_cmd(psmouse
, SYN_QUE_RESOLUTION
, resp
) == 0) {
226 if (resp
[0] != 0 && (resp
[1] & 0x80) && resp
[2] != 0) {
227 priv
->x_res
= resp
[0]; /* x resolution in units/mm */
228 priv
->y_res
= resp
[2]; /* y resolution in units/mm */
232 if (SYN_EXT_CAP_REQUESTS(priv
->capabilities
) >= 5 &&
233 SYN_CAP_MAX_DIMENSIONS(priv
->ext_cap_0c
)) {
234 if (synaptics_send_cmd(psmouse
, SYN_QUE_EXT_MAX_COORDS
, resp
)) {
235 printk(KERN_ERR
"Synaptics claims to have max coordinates"
236 " query, but I'm not able to read it.\n");
238 priv
->x_max
= (resp
[0] << 5) | ((resp
[1] & 0x0f) << 1);
239 priv
->y_max
= (resp
[2] << 5) | ((resp
[1] & 0xf0) >> 3);
243 if (SYN_EXT_CAP_REQUESTS(priv
->capabilities
) >= 7 &&
244 SYN_CAP_MIN_DIMENSIONS(priv
->ext_cap_0c
)) {
245 if (synaptics_send_cmd(psmouse
, SYN_QUE_EXT_MIN_COORDS
, resp
)) {
246 printk(KERN_ERR
"Synaptics claims to have min coordinates"
247 " query, but I'm not able to read it.\n");
249 priv
->x_min
= (resp
[0] << 5) | ((resp
[1] & 0x0f) << 1);
250 priv
->y_min
= (resp
[2] << 5) | ((resp
[1] & 0xf0) >> 3);
257 static int synaptics_query_hardware(struct psmouse
*psmouse
)
259 if (synaptics_identify(psmouse
))
261 if (synaptics_model_id(psmouse
))
263 if (synaptics_capability(psmouse
))
265 if (synaptics_resolution(psmouse
))
271 static int synaptics_set_absolute_mode(struct psmouse
*psmouse
)
273 struct synaptics_data
*priv
= psmouse
->private;
275 priv
->mode
= SYN_BIT_ABSOLUTE_MODE
;
276 if (SYN_ID_MAJOR(priv
->identity
) >= 4)
277 priv
->mode
|= SYN_BIT_DISABLE_GESTURE
;
278 if (SYN_CAP_EXTENDED(priv
->capabilities
))
279 priv
->mode
|= SYN_BIT_W_MODE
;
281 if (synaptics_mode_cmd(psmouse
, priv
->mode
))
287 static void synaptics_set_rate(struct psmouse
*psmouse
, unsigned int rate
)
289 struct synaptics_data
*priv
= psmouse
->private;
292 priv
->mode
|= SYN_BIT_HIGH_RATE
;
295 priv
->mode
&= ~SYN_BIT_HIGH_RATE
;
299 synaptics_mode_cmd(psmouse
, priv
->mode
);
302 static int synaptics_set_advanced_gesture_mode(struct psmouse
*psmouse
)
304 static unsigned char param
= 0xc8;
305 struct synaptics_data
*priv
= psmouse
->private;
307 if (!SYN_CAP_ADV_GESTURE(priv
->ext_cap_0c
))
310 if (psmouse_sliced_command(psmouse
, SYN_QUE_MODEL
))
312 if (ps2_command(&psmouse
->ps2dev
, ¶m
, PSMOUSE_CMD_SETRATE
))
315 /* Advanced gesture mode also sends multi finger data */
316 priv
->capabilities
|= BIT(1);
321 /*****************************************************************************
322 * Synaptics pass-through PS/2 port support
323 ****************************************************************************/
324 static int synaptics_pt_write(struct serio
*serio
, unsigned char c
)
326 struct psmouse
*parent
= serio_get_drvdata(serio
->parent
);
327 char rate_param
= SYN_PS_CLIENT_CMD
; /* indicates that we want pass-through port */
329 if (psmouse_sliced_command(parent
, c
))
331 if (ps2_command(&parent
->ps2dev
, &rate_param
, PSMOUSE_CMD_SETRATE
))
336 static int synaptics_pt_start(struct serio
*serio
)
338 struct psmouse
*parent
= serio_get_drvdata(serio
->parent
);
339 struct synaptics_data
*priv
= parent
->private;
341 serio_pause_rx(parent
->ps2dev
.serio
);
342 priv
->pt_port
= serio
;
343 serio_continue_rx(parent
->ps2dev
.serio
);
348 static void synaptics_pt_stop(struct serio
*serio
)
350 struct psmouse
*parent
= serio_get_drvdata(serio
->parent
);
351 struct synaptics_data
*priv
= parent
->private;
353 serio_pause_rx(parent
->ps2dev
.serio
);
354 priv
->pt_port
= NULL
;
355 serio_continue_rx(parent
->ps2dev
.serio
);
358 static int synaptics_is_pt_packet(unsigned char *buf
)
360 return (buf
[0] & 0xFC) == 0x84 && (buf
[3] & 0xCC) == 0xC4;
363 static void synaptics_pass_pt_packet(struct serio
*ptport
, unsigned char *packet
)
365 struct psmouse
*child
= serio_get_drvdata(ptport
);
367 if (child
&& child
->state
== PSMOUSE_ACTIVATED
) {
368 serio_interrupt(ptport
, packet
[1], 0);
369 serio_interrupt(ptport
, packet
[4], 0);
370 serio_interrupt(ptport
, packet
[5], 0);
371 if (child
->pktsize
== 4)
372 serio_interrupt(ptport
, packet
[2], 0);
374 serio_interrupt(ptport
, packet
[1], 0);
377 static void synaptics_pt_activate(struct psmouse
*psmouse
)
379 struct synaptics_data
*priv
= psmouse
->private;
380 struct psmouse
*child
= serio_get_drvdata(priv
->pt_port
);
382 /* adjust the touchpad to child's choice of protocol */
384 if (child
->pktsize
== 4)
385 priv
->mode
|= SYN_BIT_FOUR_BYTE_CLIENT
;
387 priv
->mode
&= ~SYN_BIT_FOUR_BYTE_CLIENT
;
389 if (synaptics_mode_cmd(psmouse
, priv
->mode
))
390 printk(KERN_INFO
"synaptics: failed to switch guest protocol\n");
394 static void synaptics_pt_create(struct psmouse
*psmouse
)
398 serio
= kzalloc(sizeof(struct serio
), GFP_KERNEL
);
400 printk(KERN_ERR
"synaptics: not enough memory to allocate pass-through port\n");
404 serio
->id
.type
= SERIO_PS_PSTHRU
;
405 strlcpy(serio
->name
, "Synaptics pass-through", sizeof(serio
->name
));
406 strlcpy(serio
->phys
, "synaptics-pt/serio0", sizeof(serio
->name
));
407 serio
->write
= synaptics_pt_write
;
408 serio
->start
= synaptics_pt_start
;
409 serio
->stop
= synaptics_pt_stop
;
410 serio
->parent
= psmouse
->ps2dev
.serio
;
412 psmouse
->pt_activate
= synaptics_pt_activate
;
414 printk(KERN_INFO
"serio: %s port at %s\n", serio
->name
, psmouse
->phys
);
415 serio_register_port(serio
);
418 /*****************************************************************************
419 * Functions to interpret the absolute mode packets
420 ****************************************************************************/
422 static void synaptics_parse_agm(const unsigned char buf
[],
423 struct synaptics_data
*priv
)
425 struct synaptics_hw_state
*agm
= &priv
->agm
;
427 /* Gesture packet: (x, y, z) at half resolution */
428 agm
->x
= (((buf
[4] & 0x0f) << 8) | buf
[1]) << 1;
429 agm
->y
= (((buf
[4] & 0xf0) << 4) | buf
[2]) << 1;
430 agm
->z
= ((buf
[3] & 0x30) | (buf
[5] & 0x0f)) << 1;
433 static int synaptics_parse_hw_state(const unsigned char buf
[],
434 struct synaptics_data
*priv
,
435 struct synaptics_hw_state
*hw
)
437 memset(hw
, 0, sizeof(struct synaptics_hw_state
));
439 if (SYN_MODEL_NEWABS(priv
->model_id
)) {
440 hw
->w
= (((buf
[0] & 0x30) >> 2) |
441 ((buf
[0] & 0x04) >> 1) |
442 ((buf
[3] & 0x04) >> 2));
444 hw
->left
= (buf
[0] & 0x01) ? 1 : 0;
445 hw
->right
= (buf
[0] & 0x02) ? 1 : 0;
447 if (SYN_CAP_CLICKPAD(priv
->ext_cap_0c
)) {
449 * Clickpad's button is transmitted as middle button,
450 * however, since it is primary button, we will report
453 hw
->left
= ((buf
[0] ^ buf
[3]) & 0x01) ? 1 : 0;
455 } else if (SYN_CAP_MIDDLE_BUTTON(priv
->capabilities
)) {
456 hw
->middle
= ((buf
[0] ^ buf
[3]) & 0x01) ? 1 : 0;
458 hw
->scroll
= (signed char)(buf
[1]);
461 if (SYN_CAP_FOUR_BUTTON(priv
->capabilities
)) {
462 hw
->up
= ((buf
[0] ^ buf
[3]) & 0x01) ? 1 : 0;
463 hw
->down
= ((buf
[0] ^ buf
[3]) & 0x02) ? 1 : 0;
466 if (SYN_CAP_ADV_GESTURE(priv
->ext_cap_0c
) && hw
->w
== 2) {
467 synaptics_parse_agm(buf
, priv
);
471 hw
->x
= (((buf
[3] & 0x10) << 8) |
472 ((buf
[1] & 0x0f) << 8) |
474 hw
->y
= (((buf
[3] & 0x20) << 7) |
475 ((buf
[1] & 0xf0) << 4) |
479 if (SYN_CAP_MULTI_BUTTON_NO(priv
->ext_cap
) &&
480 ((buf
[0] ^ buf
[3]) & 0x02)) {
481 switch (SYN_CAP_MULTI_BUTTON_NO(priv
->ext_cap
) & ~0x01) {
484 * if nExtBtn is greater than 8 it should be
485 * considered invalid and treated as 0
489 hw
->ext_buttons
|= ((buf
[5] & 0x08)) ? 0x80 : 0;
490 hw
->ext_buttons
|= ((buf
[4] & 0x08)) ? 0x40 : 0;
492 hw
->ext_buttons
|= ((buf
[5] & 0x04)) ? 0x20 : 0;
493 hw
->ext_buttons
|= ((buf
[4] & 0x04)) ? 0x10 : 0;
495 hw
->ext_buttons
|= ((buf
[5] & 0x02)) ? 0x08 : 0;
496 hw
->ext_buttons
|= ((buf
[4] & 0x02)) ? 0x04 : 0;
498 hw
->ext_buttons
|= ((buf
[5] & 0x01)) ? 0x02 : 0;
499 hw
->ext_buttons
|= ((buf
[4] & 0x01)) ? 0x01 : 0;
503 hw
->x
= (((buf
[1] & 0x1f) << 8) | buf
[2]);
504 hw
->y
= (((buf
[4] & 0x1f) << 8) | buf
[5]);
506 hw
->z
= (((buf
[0] & 0x30) << 2) | (buf
[3] & 0x3F));
507 hw
->w
= (((buf
[1] & 0x80) >> 4) | ((buf
[0] & 0x04) >> 1));
509 hw
->left
= (buf
[0] & 0x01) ? 1 : 0;
510 hw
->right
= (buf
[0] & 0x02) ? 1 : 0;
516 static void synaptics_report_semi_mt_slot(struct input_dev
*dev
, int slot
,
517 bool active
, int x
, int y
)
519 input_mt_slot(dev
, slot
);
520 input_mt_report_slot_state(dev
, MT_TOOL_FINGER
, active
);
522 input_report_abs(dev
, ABS_MT_POSITION_X
, x
);
523 input_report_abs(dev
, ABS_MT_POSITION_Y
, synaptics_invert_y(y
));
527 static void synaptics_report_semi_mt_data(struct input_dev
*dev
,
528 const struct synaptics_hw_state
*a
,
529 const struct synaptics_hw_state
*b
,
532 if (num_fingers
>= 2) {
533 synaptics_report_semi_mt_slot(dev
, 0, true, min(a
->x
, b
->x
),
535 synaptics_report_semi_mt_slot(dev
, 1, true, max(a
->x
, b
->x
),
537 } else if (num_fingers
== 1) {
538 synaptics_report_semi_mt_slot(dev
, 0, true, a
->x
, a
->y
);
539 synaptics_report_semi_mt_slot(dev
, 1, false, 0, 0);
541 synaptics_report_semi_mt_slot(dev
, 0, false, 0, 0);
542 synaptics_report_semi_mt_slot(dev
, 1, false, 0, 0);
547 * called for each full received packet from the touchpad
549 static void synaptics_process_packet(struct psmouse
*psmouse
)
551 struct input_dev
*dev
= psmouse
->dev
;
552 struct synaptics_data
*priv
= psmouse
->private;
553 struct synaptics_hw_state hw
;
558 if (synaptics_parse_hw_state(psmouse
->packet
, priv
, &hw
))
562 priv
->scroll
+= hw
.scroll
;
564 while (priv
->scroll
>= 4) {
565 input_report_key(dev
, BTN_BACK
, !hw
.down
);
567 input_report_key(dev
, BTN_BACK
, hw
.down
);
571 while (priv
->scroll
<= -4) {
572 input_report_key(dev
, BTN_FORWARD
, !hw
.up
);
574 input_report_key(dev
, BTN_FORWARD
, hw
.up
);
581 if (hw
.z
> 0 && hw
.x
> 1) {
584 if (SYN_CAP_EXTENDED(priv
->capabilities
)) {
587 if (SYN_CAP_MULTIFINGER(priv
->capabilities
))
588 num_fingers
= hw
.w
+ 2;
591 if (SYN_MODEL_PEN(priv
->model_id
))
592 ; /* Nothing, treat a pen as a single finger */
595 if (SYN_CAP_PALMDETECT(priv
->capabilities
))
605 if (SYN_CAP_ADV_GESTURE(priv
->ext_cap_0c
))
606 synaptics_report_semi_mt_data(dev
, &hw
, &priv
->agm
,
610 * BTN_TOUCH has to be first as mousedev relies on it when doing
611 * absolute -> relative conversion
613 if (hw
.z
> 30) input_report_key(dev
, BTN_TOUCH
, 1);
614 if (hw
.z
< 25) input_report_key(dev
, BTN_TOUCH
, 0);
616 if (num_fingers
> 0) {
617 input_report_abs(dev
, ABS_X
, hw
.x
);
618 input_report_abs(dev
, ABS_Y
, synaptics_invert_y(hw
.y
));
620 input_report_abs(dev
, ABS_PRESSURE
, hw
.z
);
622 if (SYN_CAP_PALMDETECT(priv
->capabilities
))
623 input_report_abs(dev
, ABS_TOOL_WIDTH
, finger_width
);
625 input_report_key(dev
, BTN_TOOL_FINGER
, num_fingers
== 1);
626 input_report_key(dev
, BTN_LEFT
, hw
.left
);
627 input_report_key(dev
, BTN_RIGHT
, hw
.right
);
629 if (SYN_CAP_MULTIFINGER(priv
->capabilities
)) {
630 input_report_key(dev
, BTN_TOOL_DOUBLETAP
, num_fingers
== 2);
631 input_report_key(dev
, BTN_TOOL_TRIPLETAP
, num_fingers
== 3);
634 if (SYN_CAP_MIDDLE_BUTTON(priv
->capabilities
))
635 input_report_key(dev
, BTN_MIDDLE
, hw
.middle
);
637 if (SYN_CAP_FOUR_BUTTON(priv
->capabilities
)) {
638 input_report_key(dev
, BTN_FORWARD
, hw
.up
);
639 input_report_key(dev
, BTN_BACK
, hw
.down
);
642 for (i
= 0; i
< SYN_CAP_MULTI_BUTTON_NO(priv
->ext_cap
); i
++)
643 input_report_key(dev
, BTN_0
+ i
, hw
.ext_buttons
& (1 << i
));
648 static int synaptics_validate_byte(unsigned char packet
[], int idx
, unsigned char pkt_type
)
650 static const unsigned char newabs_mask
[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
651 static const unsigned char newabs_rel_mask
[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
652 static const unsigned char newabs_rslt
[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
653 static const unsigned char oldabs_mask
[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
654 static const unsigned char oldabs_rslt
[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
656 if (idx
< 0 || idx
> 4)
662 case SYN_NEWABS_RELAXED
:
663 return (packet
[idx
] & newabs_rel_mask
[idx
]) == newabs_rslt
[idx
];
665 case SYN_NEWABS_STRICT
:
666 return (packet
[idx
] & newabs_mask
[idx
]) == newabs_rslt
[idx
];
669 return (packet
[idx
] & oldabs_mask
[idx
]) == oldabs_rslt
[idx
];
672 printk(KERN_ERR
"synaptics: unknown packet type %d\n", pkt_type
);
677 static unsigned char synaptics_detect_pkt_type(struct psmouse
*psmouse
)
681 for (i
= 0; i
< 5; i
++)
682 if (!synaptics_validate_byte(psmouse
->packet
, i
, SYN_NEWABS_STRICT
)) {
683 printk(KERN_INFO
"synaptics: using relaxed packet validation\n");
684 return SYN_NEWABS_RELAXED
;
687 return SYN_NEWABS_STRICT
;
690 static psmouse_ret_t
synaptics_process_byte(struct psmouse
*psmouse
)
692 struct synaptics_data
*priv
= psmouse
->private;
694 if (psmouse
->pktcnt
>= 6) { /* Full packet received */
695 if (unlikely(priv
->pkt_type
== SYN_NEWABS
))
696 priv
->pkt_type
= synaptics_detect_pkt_type(psmouse
);
698 if (SYN_CAP_PASS_THROUGH(priv
->capabilities
) &&
699 synaptics_is_pt_packet(psmouse
->packet
)) {
701 synaptics_pass_pt_packet(priv
->pt_port
, psmouse
->packet
);
703 synaptics_process_packet(psmouse
);
705 return PSMOUSE_FULL_PACKET
;
708 return synaptics_validate_byte(psmouse
->packet
, psmouse
->pktcnt
- 1, priv
->pkt_type
) ?
709 PSMOUSE_GOOD_DATA
: PSMOUSE_BAD_DATA
;
712 /*****************************************************************************
713 * Driver initialization/cleanup functions
714 ****************************************************************************/
715 static void set_abs_position_params(struct input_dev
*dev
,
716 struct synaptics_data
*priv
, int x_code
,
719 int x_min
= priv
->x_min
?: XMIN_NOMINAL
;
720 int x_max
= priv
->x_max
?: XMAX_NOMINAL
;
721 int y_min
= priv
->y_min
?: YMIN_NOMINAL
;
722 int y_max
= priv
->y_max
?: YMAX_NOMINAL
;
723 int fuzz
= SYN_CAP_REDUCED_FILTERING(priv
->ext_cap_0c
) ?
724 SYN_REDUCED_FILTER_FUZZ
: 0;
726 input_set_abs_params(dev
, x_code
, x_min
, x_max
, fuzz
, 0);
727 input_set_abs_params(dev
, y_code
, y_min
, y_max
, fuzz
, 0);
728 input_abs_set_res(dev
, x_code
, priv
->x_res
);
729 input_abs_set_res(dev
, y_code
, priv
->y_res
);
732 static void set_input_params(struct input_dev
*dev
, struct synaptics_data
*priv
)
736 __set_bit(INPUT_PROP_POINTER
, dev
->propbit
);
738 __set_bit(EV_ABS
, dev
->evbit
);
739 set_abs_position_params(dev
, priv
, ABS_X
, ABS_Y
);
740 input_set_abs_params(dev
, ABS_PRESSURE
, 0, 255, 0, 0);
742 if (SYN_CAP_ADV_GESTURE(priv
->ext_cap_0c
)) {
743 __set_bit(INPUT_PROP_SEMI_MT
, dev
->propbit
);
744 input_mt_init_slots(dev
, 2);
745 set_abs_position_params(dev
, priv
, ABS_MT_POSITION_X
,
749 if (SYN_CAP_PALMDETECT(priv
->capabilities
))
750 input_set_abs_params(dev
, ABS_TOOL_WIDTH
, 0, 15, 0, 0);
752 __set_bit(EV_KEY
, dev
->evbit
);
753 __set_bit(BTN_TOUCH
, dev
->keybit
);
754 __set_bit(BTN_TOOL_FINGER
, dev
->keybit
);
755 __set_bit(BTN_LEFT
, dev
->keybit
);
756 __set_bit(BTN_RIGHT
, dev
->keybit
);
758 if (SYN_CAP_MULTIFINGER(priv
->capabilities
)) {
759 __set_bit(BTN_TOOL_DOUBLETAP
, dev
->keybit
);
760 __set_bit(BTN_TOOL_TRIPLETAP
, dev
->keybit
);
763 if (SYN_CAP_MIDDLE_BUTTON(priv
->capabilities
))
764 __set_bit(BTN_MIDDLE
, dev
->keybit
);
766 if (SYN_CAP_FOUR_BUTTON(priv
->capabilities
) ||
767 SYN_CAP_MIDDLE_BUTTON(priv
->capabilities
)) {
768 __set_bit(BTN_FORWARD
, dev
->keybit
);
769 __set_bit(BTN_BACK
, dev
->keybit
);
772 for (i
= 0; i
< SYN_CAP_MULTI_BUTTON_NO(priv
->ext_cap
); i
++)
773 __set_bit(BTN_0
+ i
, dev
->keybit
);
775 __clear_bit(EV_REL
, dev
->evbit
);
776 __clear_bit(REL_X
, dev
->relbit
);
777 __clear_bit(REL_Y
, dev
->relbit
);
779 if (SYN_CAP_CLICKPAD(priv
->ext_cap_0c
)) {
780 __set_bit(INPUT_PROP_BUTTONPAD
, dev
->propbit
);
781 /* Clickpads report only left button */
782 __clear_bit(BTN_RIGHT
, dev
->keybit
);
783 __clear_bit(BTN_MIDDLE
, dev
->keybit
);
787 static void synaptics_disconnect(struct psmouse
*psmouse
)
789 synaptics_reset(psmouse
);
790 kfree(psmouse
->private);
791 psmouse
->private = NULL
;
794 static int synaptics_reconnect(struct psmouse
*psmouse
)
796 struct synaptics_data
*priv
= psmouse
->private;
797 struct synaptics_data old_priv
= *priv
;
802 psmouse_reset(psmouse
);
803 error
= synaptics_detect(psmouse
, 0);
804 } while (error
&& ++retry
< 3);
810 printk(KERN_DEBUG
"Synaptics reconnected after %d tries\n",
813 if (synaptics_query_hardware(psmouse
)) {
814 printk(KERN_ERR
"Unable to query Synaptics hardware.\n");
818 if (synaptics_set_absolute_mode(psmouse
)) {
819 printk(KERN_ERR
"Unable to initialize Synaptics hardware.\n");
823 if (synaptics_set_advanced_gesture_mode(psmouse
)) {
824 printk(KERN_ERR
"Advanced gesture mode reconnect failed.\n");
828 if (old_priv
.identity
!= priv
->identity
||
829 old_priv
.model_id
!= priv
->model_id
||
830 old_priv
.capabilities
!= priv
->capabilities
||
831 old_priv
.ext_cap
!= priv
->ext_cap
) {
832 printk(KERN_ERR
"Synaptics hardware appears to be different: "
833 "id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
834 old_priv
.identity
, priv
->identity
,
835 old_priv
.model_id
, priv
->model_id
,
836 old_priv
.capabilities
, priv
->capabilities
,
837 old_priv
.ext_cap
, priv
->ext_cap
);
844 static bool impaired_toshiba_kbc
;
846 static const struct dmi_system_id __initconst toshiba_dmi_table
[] = {
847 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
849 /* Toshiba Satellite */
851 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
852 DMI_MATCH(DMI_PRODUCT_NAME
, "Satellite"),
856 /* Toshiba Dynabook */
858 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
859 DMI_MATCH(DMI_PRODUCT_NAME
, "dynabook"),
863 /* Toshiba Portege M300 */
865 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
866 DMI_MATCH(DMI_PRODUCT_NAME
, "PORTEGE M300"),
871 /* Toshiba Portege M300 */
873 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
874 DMI_MATCH(DMI_PRODUCT_NAME
, "Portable PC"),
875 DMI_MATCH(DMI_PRODUCT_VERSION
, "Version 1.0"),
883 static bool broken_olpc_ec
;
885 static const struct dmi_system_id __initconst olpc_dmi_table
[] = {
886 #if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
888 /* OLPC XO-1 or XO-1.5 */
890 DMI_MATCH(DMI_SYS_VENDOR
, "OLPC"),
891 DMI_MATCH(DMI_PRODUCT_NAME
, "XO"),
898 void __init
synaptics_module_init(void)
900 impaired_toshiba_kbc
= dmi_check_system(toshiba_dmi_table
);
901 broken_olpc_ec
= dmi_check_system(olpc_dmi_table
);
904 int synaptics_init(struct psmouse
*psmouse
)
906 struct synaptics_data
*priv
;
909 * The OLPC XO has issues with Synaptics' absolute mode; similarly to
910 * the HGPK, it quickly degrades and the hardware becomes jumpy and
911 * overly sensitive. Not only that, but the constant packet spew
912 * (even at a lowered 40pps rate) overloads the EC such that key
913 * presses on the keyboard are missed. Given all of that, don't
914 * even attempt to use Synaptics mode. Relative mode seems to work
917 if (broken_olpc_ec
) {
918 printk(KERN_INFO
"synaptics: OLPC XO detected, not enabling Synaptics protocol.\n");
922 psmouse
->private = priv
= kzalloc(sizeof(struct synaptics_data
), GFP_KERNEL
);
926 psmouse_reset(psmouse
);
928 if (synaptics_query_hardware(psmouse
)) {
929 printk(KERN_ERR
"Unable to query Synaptics hardware.\n");
933 if (synaptics_set_absolute_mode(psmouse
)) {
934 printk(KERN_ERR
"Unable to initialize Synaptics hardware.\n");
938 if (synaptics_set_advanced_gesture_mode(psmouse
)) {
939 printk(KERN_ERR
"Advanced gesture mode init failed.\n");
943 priv
->pkt_type
= SYN_MODEL_NEWABS(priv
->model_id
) ? SYN_NEWABS
: SYN_OLDABS
;
945 printk(KERN_INFO
"Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx\n",
946 SYN_ID_MODEL(priv
->identity
),
947 SYN_ID_MAJOR(priv
->identity
), SYN_ID_MINOR(priv
->identity
),
948 priv
->model_id
, priv
->capabilities
, priv
->ext_cap
, priv
->ext_cap_0c
);
950 set_input_params(psmouse
->dev
, priv
);
953 * Encode touchpad model so that it can be used to set
954 * input device->id.version and be visible to userspace.
955 * Because version is __u16 we have to drop something.
956 * Hardware info bits seem to be good candidates as they
957 * are documented to be for Synaptics corp. internal use.
959 psmouse
->model
= ((priv
->model_id
& 0x00ff0000) >> 8) |
960 (priv
->model_id
& 0x000000ff);
962 psmouse
->protocol_handler
= synaptics_process_byte
;
963 psmouse
->set_rate
= synaptics_set_rate
;
964 psmouse
->disconnect
= synaptics_disconnect
;
965 psmouse
->reconnect
= synaptics_reconnect
;
966 psmouse
->cleanup
= synaptics_reset
;
967 psmouse
->pktsize
= 6;
968 /* Synaptics can usually stay in sync without extra help */
969 psmouse
->resync_time
= 0;
971 if (SYN_CAP_PASS_THROUGH(priv
->capabilities
))
972 synaptics_pt_create(psmouse
);
975 * Toshiba's KBC seems to have trouble handling data from
976 * Synaptics at full rate. Switch to a lower rate (roughly
977 * the same rate as a standard PS/2 mouse).
979 if (psmouse
->rate
>= 80 && impaired_toshiba_kbc
) {
980 printk(KERN_INFO
"synaptics: Toshiba %s detected, limiting rate to 40pps.\n",
981 dmi_get_system_info(DMI_PRODUCT_NAME
));
992 bool synaptics_supported(void)
997 #else /* CONFIG_MOUSE_PS2_SYNAPTICS */
999 void __init
synaptics_module_init(void)
1003 int synaptics_init(struct psmouse
*psmouse
)
1008 bool synaptics_supported(void)
1013 #endif /* CONFIG_MOUSE_PS2_SYNAPTICS */