Google Git
Sign in
gfiber / kernel / lockdown / 452b18c99ac1c1460cca16317b6adae9d959f224 / . / drivers / input / mouse / synaptics.c
blob: a3769cf843811f0db72ee30b7ecf329c53546e8d [file] [log] [blame]
/*
* Synaptics TouchPad PS/2 mouse driver
*
* 2003 Dmitry Torokhov <dtor@mail.ru>
* Added support for pass-through port. Special thanks to Peter Berg Larsen
* for explaining various Synaptics quirks.
*
* 2003 Peter Osterlund <petero2@telia.com>
* Ported to 2.5 input device infrastructure.
*
* Copyright (C) 2001 Stefan Gmeiner <riddlebox@freesurf.ch>
* start merging tpconfig and gpm code to a xfree-input module
* adding some changes and extensions (ex. 3rd and 4th button)
*
* Copyright (c) 1997 C. Scott Ananian <cananian@alumni.priceton.edu>
* Copyright (c) 1998-2000 Bruce Kalk <kall@compass.com>
* code for the special synaptics commands (from the tpconfig-source)
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* Trademarks are the property of their respective owners.
*/
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/dmi.h>
#include <linux/input/mt.h>
#include <linux/serio.h>
#include <linux/libps2.h>
#include <linux/slab.h>
#include "psmouse.h"
#include "synaptics.h"
/*
* The x/y limits are taken from the Synaptics TouchPad interfacing Guide,
* section 2.3.2, which says that they should be valid regardless of the
* actual size of the sensor.
* Note that newer firmware allows querying device for maximum useable
* coordinates.
*/
#define XMIN 0
#define XMAX 6143
#define YMIN 0
#define YMAX 6143
#define XMIN_NOMINAL 1472
#define XMAX_NOMINAL 5472
#define YMIN_NOMINAL 1408
#define YMAX_NOMINAL 4448
/* Size in bits of absolute position values reported by the hardware */
#define ABS_POS_BITS 13
/*
* These values should represent the absolute maximum value that will
* be reported for a positive position value. Some Synaptics firmware
* uses this value to indicate a finger near the edge of the touchpad
* whose precise position cannot be determined.
*
* At least one touchpad is known to report positions in excess of this
* value which are actually negative values truncated to the 13-bit
* reporting range. These values have never been observed to be lower
* than 8184 (i.e. -8), so we treat all values greater than 8176 as
* negative and any other value as positive.
*/
#define X_MAX_POSITIVE 8176
#define Y_MAX_POSITIVE 8176
/*****************************************************************************
* Stuff we need even when we do not want native Synaptics support
****************************************************************************/
/*
* Set the synaptics touchpad mode byte by special commands
*/
static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode)
{
unsigned char param[1];
if (psmouse_sliced_command(psmouse, mode))
return -1;
param[0] = SYN_PS_SET_MODE2;
if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE))
return -1;
return 0;
}
int synaptics_detect(struct psmouse *psmouse, bool set_properties)
{
struct ps2dev *ps2dev = &psmouse->ps2dev;
unsigned char param[4];
param[0] = 0;
ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
if (param[1] != 0x47)
return -ENODEV;
if (set_properties) {
psmouse->vendor = "Synaptics";
psmouse->name = "TouchPad";
}
return 0;
}
void synaptics_reset(struct psmouse *psmouse)
{
/* reset touchpad back to relative mode, gestures enabled */
synaptics_mode_cmd(psmouse, 0);
}
#ifdef CONFIG_MOUSE_PS2_SYNAPTICS
struct min_max_quirk {
const char * const *pnp_ids;
int x_min, x_max, y_min, y_max;
};
static const struct min_max_quirk min_max_pnpid_table[] = {
{
(const char * const []){"LEN0033", NULL},
1024, 5052, 2258, 4832
},
{
(const char * const []){"LEN0035", "LEN0042", NULL},
1232, 5710, 1156, 4696
},
{
(const char * const []){"LEN0034", "LEN0036", "LEN0039",
"LEN2002", "LEN2004", NULL},
1024, 5112, 2024, 4832
},
{
(const char * const []){"LEN2001", NULL},
1024, 5022, 2508, 4832
},
{
(const char * const []){"LEN2006", NULL},
1264, 5675, 1171, 4688
},
{ }
};
/* This list has been kindly provided by Synaptics. */
static const char * const topbuttonpad_pnp_ids[] = {
"LEN0017",
"LEN0018",
"LEN0019",
"LEN0023",
"LEN002A",
"LEN002B",
"LEN002C",
"LEN002D",
"LEN002E",
"LEN0033", /* Helix */
"LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */
"LEN0035", /* X240 */
"LEN0036", /* T440 */
"LEN0037",
"LEN0038",
"LEN0039", /* T440s */
"LEN0041",
"LEN0042", /* Yoga */
"LEN0045",
"LEN0046",
"LEN0047",
"LEN0048",
"LEN0049",
"LEN2000",
"LEN2001", /* Edge E431 */
"LEN2002", /* Edge E531 */
"LEN2003",
"LEN2004", /* L440 */
"LEN2005",
"LEN2006",
"LEN2007",
"LEN2008",
"LEN2009",
"LEN200A",
"LEN200B",
NULL
};
static bool matches_pnp_id(struct psmouse *psmouse, const char * const ids[])
{
int i;
if (!strncmp(psmouse->ps2dev.serio->firmware_id, "PNP:", 4))
for (i = 0; ids[i]; i++)
if (strstr(psmouse->ps2dev.serio->firmware_id, ids[i]))
return true;
return false;
}
/*****************************************************************************
* Synaptics communications functions
****************************************************************************/
/*
* Synaptics touchpads report the y coordinate from bottom to top, which is
* opposite from what userspace expects.
* This function is used to invert y before reporting.
*/
static int synaptics_invert_y(int y)
{
return YMAX_NOMINAL + YMIN_NOMINAL - y;
}
/*
* Send a command to the synpatics touchpad by special commands
*/
static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
{
if (psmouse_sliced_command(psmouse, c))
return -1;
if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
return -1;
return 0;
}
/*
* Read the model-id bytes from the touchpad
* see also SYN_MODEL_* macros
*/
static int synaptics_model_id(struct psmouse *psmouse)
{
struct synaptics_data *priv = psmouse->private;
unsigned char mi[3];
if (synaptics_send_cmd(psmouse, SYN_QUE_MODEL, mi))
return -1;
priv->model_id = (mi[0]<<16) | (mi[1]<<8) | mi[2];
return 0;
}
/*
* Read the board id from the touchpad
* The board id is encoded in the "QUERY MODES" response
*/
static int synaptics_board_id(struct psmouse *psmouse)
{
struct synaptics_data *priv = psmouse->private;
unsigned char bid[3];
if (synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid))
return -1;
priv->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
return 0;
}
/*
* Read the firmware id from the touchpad
*/
static int synaptics_firmware_id(struct psmouse *psmouse)
{
struct synaptics_data *priv = psmouse->private;
unsigned char fwid[3];
if (synaptics_send_cmd(psmouse, SYN_QUE_FIRMWARE_ID, fwid))
return -1;
priv->firmware_id = (fwid[0] << 16) | (fwid[1] << 8) | fwid[2];
return 0;
}
/*
* Read the capability-bits from the touchpad
* see also the SYN_CAP_* macros
*/
static int synaptics_capability(struct psmouse *psmouse)
{
struct synaptics_data *priv = psmouse->private;
unsigned char cap[3];
if (synaptics_send_cmd(psmouse, SYN_QUE_CAPABILITIES, cap))
return -1;
priv->capabilities = (cap[0] << 16) | (cap[1] << 8) | cap[2];
priv->ext_cap = priv->ext_cap_0c = 0;
/*
* Older firmwares had submodel ID fixed to 0x47
*/
if (SYN_ID_FULL(priv->identity) < 0x705 &&
SYN_CAP_SUBMODEL_ID(priv->capabilities) != 0x47) {
return -1;
}
/*
* Unless capExtended is set the rest of the flags should be ignored
*/
if (!SYN_CAP_EXTENDED(priv->capabilities))
priv->capabilities = 0;
if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 1) {
if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB, cap)) {
psmouse_warn(psmouse,
"device claims to have extended capabilities, but I'm not able to read them.\n");
} else {
priv->ext_cap = (cap[0] << 16) | (cap[1] << 8) | cap[2];
/*
* if nExtBtn is greater than 8 it should be considered
* invalid and treated as 0
*/
if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) > 8)
priv->ext_cap &= 0xff0fff;
}
}
if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 4) {
if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_CAPAB_0C, cap)) {
psmouse_warn(psmouse,
"device claims to have extended capability 0x0c, but I'm not able to read it.\n");
} else {
priv->ext_cap_0c = (cap[0] << 16) | (cap[1] << 8) | cap[2];
}
}
return 0;
}
/*
* Identify Touchpad
* See also the SYN_ID_* macros
*/
static int synaptics_identify(struct psmouse *psmouse)
{
struct synaptics_data *priv = psmouse->private;
unsigned char id[3];
if (synaptics_send_cmd(psmouse, SYN_QUE_IDENTIFY, id))
return -1;
priv->identity = (id[0]<<16) | (id[1]<<8) | id[2];
if (SYN_ID_IS_SYNAPTICS(priv->identity))
return 0;
return -1;
}
/*
* Read touchpad resolution and maximum reported coordinates
* Resolution is left zero if touchpad does not support the query
*/
static int synaptics_resolution(struct psmouse *psmouse)
{
struct synaptics_data *priv = psmouse->private;
unsigned char resp[3];
int i;
if (SYN_ID_MAJOR(priv->identity) < 4)
return 0;
if (synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp) == 0) {
if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
priv->x_res = resp[0]; /* x resolution in units/mm */
priv->y_res = resp[2]; /* y resolution in units/mm */
}
}
for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
if (matches_pnp_id(psmouse, min_max_pnpid_table[i].pnp_ids)) {
priv->x_min = min_max_pnpid_table[i].x_min;
priv->x_max = min_max_pnpid_table[i].x_max;
priv->y_min = min_max_pnpid_table[i].y_min;
priv->y_max = min_max_pnpid_table[i].y_max;
return 0;
}
}
if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 5 &&
SYN_CAP_MAX_DIMENSIONS(priv->ext_cap_0c)) {
if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp)) {
psmouse_warn(psmouse,
"device claims to have max coordinates query, but I'm not able to read it.\n");
} else {
priv->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
priv->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
}
}
if (SYN_EXT_CAP_REQUESTS(priv->capabilities) >= 7 &&
SYN_CAP_MIN_DIMENSIONS(priv->ext_cap_0c)) {
if (synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp)) {
psmouse_warn(psmouse,
"device claims to have min coordinates query, but I'm not able to read it.\n");
} else {
priv->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
priv->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
}
}
return 0;
}
static int synaptics_query_hardware(struct psmouse *psmouse)
{
if (synaptics_identify(psmouse))
return -1;
if (synaptics_model_id(psmouse))
return -1;
if (synaptics_firmware_id(psmouse))
return -1;
if (synaptics_board_id(psmouse))
return -1;
if (synaptics_capability(psmouse))
return -1;
if (synaptics_resolution(psmouse))
return -1;
return 0;
}
static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
{
static unsigned char param = 0xc8;
struct synaptics_data *priv = psmouse->private;
if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)))
return 0;
if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL))
return -1;
if (ps2_command(&psmouse->ps2dev, &param, PSMOUSE_CMD_SETRATE))
return -1;
/* Advanced gesture mode also sends multi finger data */
priv->capabilities |= BIT(1);
return 0;
}
static int synaptics_set_mode(struct psmouse *psmouse)
{
struct synaptics_data *priv = psmouse->private;
priv->mode = 0;
if (priv->absolute_mode)
priv->mode |= SYN_BIT_ABSOLUTE_MODE;
if (priv->disable_gesture)
priv->mode |= SYN_BIT_DISABLE_GESTURE;
if (psmouse->rate >= 80)
priv->mode |= SYN_BIT_HIGH_RATE;
if (SYN_CAP_EXTENDED(priv->capabilities))
priv->mode |= SYN_BIT_W_MODE;
if (synaptics_mode_cmd(psmouse, priv->mode))
return -1;
if (priv->absolute_mode &&
synaptics_set_advanced_gesture_mode(psmouse)) {
psmouse_err(psmouse, "Advanced gesture mode init failed.\n");
return -1;
}
return 0;
}
static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
{
struct synaptics_data *priv = psmouse->private;
if (rate >= 80) {
priv->mode |= SYN_BIT_HIGH_RATE;
psmouse->rate = 80;
} else {
priv->mode &= ~SYN_BIT_HIGH_RATE;
psmouse->rate = 40;
}
synaptics_mode_cmd(psmouse, priv->mode);
}
/*****************************************************************************
* Synaptics pass-through PS/2 port support
****************************************************************************/
static int synaptics_pt_write(struct serio *serio, unsigned char c)
{
struct psmouse *parent = serio_get_drvdata(serio->parent);
char rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
if (psmouse_sliced_command(parent, c))
return -1;
if (ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE))
return -1;
return 0;
}
static int synaptics_pt_start(struct serio *serio)
{
struct psmouse *parent = serio_get_drvdata(serio->parent);
struct synaptics_data *priv = parent->private;
serio_pause_rx(parent->ps2dev.serio);
priv->pt_port = serio;
serio_continue_rx(parent->ps2dev.serio);
return 0;
}
static void synaptics_pt_stop(struct serio *serio)
{
struct psmouse *parent = serio_get_drvdata(serio->parent);
struct synaptics_data *priv = parent->private;
serio_pause_rx(parent->ps2dev.serio);
priv->pt_port = NULL;
serio_continue_rx(parent->ps2dev.serio);
}
static int synaptics_is_pt_packet(unsigned char *buf)
{
return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
}
static void synaptics_pass_pt_packet(struct serio *ptport, unsigned char *packet)
{
struct psmouse *child = serio_get_drvdata(ptport);
if (child && child->state == PSMOUSE_ACTIVATED) {
serio_interrupt(ptport, packet[1], 0);
serio_interrupt(ptport, packet[4], 0);
serio_interrupt(ptport, packet[5], 0);
if (child->pktsize == 4)
serio_interrupt(ptport, packet[2], 0);
} else
serio_interrupt(ptport, packet[1], 0);
}
static void synaptics_pt_activate(struct psmouse *psmouse)
{
struct synaptics_data *priv = psmouse->private;
struct psmouse *child = serio_get_drvdata(priv->pt_port);
/* adjust the touchpad to child's choice of protocol */
if (child) {
if (child->pktsize == 4)
priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT;
else
priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
if (synaptics_mode_cmd(psmouse, priv->mode))
psmouse_warn(psmouse,
"failed to switch guest protocol\n");
}
}
static void synaptics_pt_create(struct psmouse *psmouse)
{
struct serio *serio;
serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
if (!serio) {
psmouse_err(psmouse,
"not enough memory for pass-through port\n");
return;
}
serio->id.type = SERIO_PS_PSTHRU;
strlcpy(serio->name, "Synaptics pass-through", sizeof(serio->name));
strlcpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->name));
serio->write = synaptics_pt_write;
serio->start = synaptics_pt_start;
serio->stop = synaptics_pt_stop;
serio->parent = psmouse->ps2dev.serio;
psmouse->pt_activate = synaptics_pt_activate;
psmouse_info(psmouse, "serio: %s port at %s\n",
serio->name, psmouse->phys);
serio_register_port(serio);
}
/*****************************************************************************
* Functions to interpret the absolute mode packets
****************************************************************************/
static void synaptics_mt_state_set(struct synaptics_mt_state *state, int count,
int sgm, int agm)
{
state->count = count;
state->sgm = sgm;
state->agm = agm;
}
static void synaptics_parse_agm(const unsigned char buf[],
struct synaptics_data *priv,
struct synaptics_hw_state *hw)
{
struct synaptics_hw_state *agm = &priv->agm;
int agm_packet_type;
agm_packet_type = (buf[5] & 0x30) >> 4;
switch (agm_packet_type) {
case 1:
/* Gesture packet: (x, y, z) half resolution */
agm->w = hw->w;
agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
break;
case 2:
/* AGM-CONTACT packet: (count, sgm, agm) */
synaptics_mt_state_set(&agm->mt_state, buf[1], buf[2], buf[4]);
break;
default:
break;
}
/* Record that at least one AGM has been received since last SGM */
priv->agm_pending = true;
}
static int synaptics_parse_hw_state(const unsigned char buf[],
struct synaptics_data *priv,
struct synaptics_hw_state *hw)
{
memset(hw, 0, sizeof(struct synaptics_hw_state));
if (SYN_MODEL_NEWABS(priv->model_id)) {
hw->w = (((buf[0] & 0x30) >> 2) |
((buf[0] & 0x04) >> 1) |
((buf[3] & 0x04) >> 2));
if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) ||
SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) &&
hw->w == 2) {
synaptics_parse_agm(buf, priv, hw);
return 1;
}
hw->x = (((buf[3] & 0x10) << 8) |
((buf[1] & 0x0f) << 8) |
buf[4]);
hw->y = (((buf[3] & 0x20) << 7) |
((buf[1] & 0xf0) << 4) |
buf[5]);
hw->z = buf[2];
hw->left = (buf[0] & 0x01) ? 1 : 0;
hw->right = (buf[0] & 0x02) ? 1 : 0;
if (SYN_CAP_FORCEPAD(priv->ext_cap_0c)) {
/*
* ForcePads, like Clickpads, use middle button
* bits to report primary button clicks.
* Unfortunately they report primary button not
* only when user presses on the pad above certain
* threshold, but also when there are more than one
* finger on the touchpad, which interferes with
* out multi-finger gestures.
*/
if (hw->z == 0) {
/* No contacts */
priv->press = priv->report_press = false;
} else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) {
/*
* Single-finger touch with pressure above
* the threshold. If pressure stays long
* enough, we'll start reporting primary
* button. We rely on the device continuing
* sending data even if finger does not
* move.
*/
if (!priv->press) {
priv->press_start = jiffies;
priv->press = true;
} else if (time_after(jiffies,
priv->press_start +
msecs_to_jiffies(50))) {
priv->report_press = true;
}
} else {
priv->press = false;
}
hw->left = priv->report_press;
} else if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
/*
* Clickpad's button is transmitted as middle button,
* however, since it is primary button, we will report
* it as BTN_LEFT.
*/
hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
} else if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
if (hw->w == 2)
hw->scroll = (signed char)(buf[1]);
}
if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0;
}
if (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) &&
((buf[0] ^ buf[3]) & 0x02)) {
switch (SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap) & ~0x01) {
default:
/*
* if nExtBtn is greater than 8 it should be
* considered invalid and treated as 0
*/
break;
case 8:
hw->ext_buttons |= ((buf[5] & 0x08)) ? 0x80 : 0;
hw->ext_buttons |= ((buf[4] & 0x08)) ? 0x40 : 0;
case 6:
hw->ext_buttons |= ((buf[5] & 0x04)) ? 0x20 : 0;
hw->ext_buttons |= ((buf[4] & 0x04)) ? 0x10 : 0;
case 4:
hw->ext_buttons |= ((buf[5] & 0x02)) ? 0x08 : 0;
hw->ext_buttons |= ((buf[4] & 0x02)) ? 0x04 : 0;
case 2:
hw->ext_buttons |= ((buf[5] & 0x01)) ? 0x02 : 0;
hw->ext_buttons |= ((buf[4] & 0x01)) ? 0x01 : 0;
}
}
} else {
hw->x = (((buf[1] & 0x1f) << 8) | buf[2]);
hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F));
hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
hw->left = (buf[0] & 0x01) ? 1 : 0;
hw->right = (buf[0] & 0x02) ? 1 : 0;
}
/*
* Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE
* is used by some firmware to indicate a finger at the edge of
* the touchpad whose precise position cannot be determined, so
* convert these values to the maximum axis value.
*/
if (hw->x > X_MAX_POSITIVE)
hw->x -= 1 << ABS_POS_BITS;
else if (hw->x == X_MAX_POSITIVE)
hw->x = XMAX;
if (hw->y > Y_MAX_POSITIVE)
hw->y -= 1 << ABS_POS_BITS;
else if (hw->y == Y_MAX_POSITIVE)
hw->y = YMAX;
return 0;
}
static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot,
bool active, int x, int y)
{
input_mt_slot(dev, slot);
input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
if (active) {
input_report_abs(dev, ABS_MT_POSITION_X, x);
input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y));
}
}
static void synaptics_report_semi_mt_data(struct input_dev *dev,
const struct synaptics_hw_state *a,
const struct synaptics_hw_state *b,
int num_fingers)
{
if (num_fingers >= 2) {
synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x),
min(a->y, b->y));
synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x),
max(a->y, b->y));
} else if (num_fingers == 1) {
synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y);
synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
} else {
synaptics_report_semi_mt_slot(dev, 0, false, 0, 0);
synaptics_report_semi_mt_slot(dev, 1, false, 0, 0);
}
}
static void synaptics_report_buttons(struct psmouse *psmouse,
const struct synaptics_hw_state *hw)
{
struct input_dev *dev = psmouse->dev;
struct synaptics_data *priv = psmouse->private;
int i;
input_report_key(dev, BTN_LEFT, hw->left);
input_report_key(dev, BTN_RIGHT, hw->right);
if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
input_report_key(dev, BTN_MIDDLE, hw->middle);
if (SYN_CAP_FOUR_BUTTON(priv->capabilities)) {
input_report_key(dev, BTN_FORWARD, hw->up);
input_report_key(dev, BTN_BACK, hw->down);
}
for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
input_report_key(dev, BTN_0 + i, hw->ext_buttons & (1 << i));
}
static void synaptics_report_slot(struct input_dev *dev, int slot,
const struct synaptics_hw_state *hw)
{
input_mt_slot(dev, slot);
input_mt_report_slot_state(dev, MT_TOOL_FINGER, (hw != NULL));
if (!hw)
return;
input_report_abs(dev, ABS_MT_POSITION_X, hw->x);
input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(hw->y));
input_report_abs(dev, ABS_MT_PRESSURE, hw->z);
}
static void synaptics_report_mt_data(struct psmouse *psmouse,
struct synaptics_mt_state *mt_state,
const struct synaptics_hw_state *sgm)
{
struct input_dev *dev = psmouse->dev;
struct synaptics_data *priv = psmouse->private;
struct synaptics_hw_state *agm = &priv->agm;
struct synaptics_mt_state *old = &priv->mt_state;
switch (mt_state->count) {
case 0:
synaptics_report_slot(dev, 0, NULL);
synaptics_report_slot(dev, 1, NULL);
break;
case 1:
if (mt_state->sgm == -1) {
synaptics_report_slot(dev, 0, NULL);
synaptics_report_slot(dev, 1, NULL);
} else if (mt_state->sgm == 0) {
synaptics_report_slot(dev, 0, sgm);
synaptics_report_slot(dev, 1, NULL);
} else {
synaptics_report_slot(dev, 0, NULL);
synaptics_report_slot(dev, 1, sgm);
}
break;
default:
/*
* If the finger slot contained in SGM is valid, and either
* hasn't changed, or is new, or the old SGM has now moved to
* AGM, then report SGM in MTB slot 0.
* Otherwise, empty MTB slot 0.
*/
if (mt_state->sgm != -1 &&
(mt_state->sgm == old->sgm ||
old->sgm == -1 || mt_state->agm == old->sgm))
synaptics_report_slot(dev, 0, sgm);
else
synaptics_report_slot(dev, 0, NULL);
/*
* If the finger slot contained in AGM is valid, and either
* hasn't changed, or is new, then report AGM in MTB slot 1.
* Otherwise, empty MTB slot 1.
*
* However, in the case where the AGM is new, make sure that
* that it is either the same as the old SGM, or there was no
* SGM.
*
* Otherwise, if the SGM was just 1, and the new AGM is 2, then
* the new AGM will keep the old SGM's tracking ID, which can
* cause apparent drumroll. This happens if in the following
* valid finger sequence:
*
* Action SGM AGM (MTB slot:Contact)
* 1. Touch contact 0 (0:0)
* 2. Touch contact 1 (0:0, 1:1)
* 3. Lift contact 0 (1:1)
* 4. Touch contacts 2,3 (0:2, 1:3)
*
* In step 4, contact 3, in AGM must not be given the same
* tracking ID as contact 1 had in step 3. To avoid this,
* the first agm with contact 3 is dropped and slot 1 is
* invalidated (tracking ID = -1).
*/
if (mt_state->agm != -1 &&
(mt_state->agm == old->agm ||
(old->agm == -1 &&
(old->sgm == -1 || mt_state->agm == old->sgm))))
synaptics_report_slot(dev, 1, agm);
else
synaptics_report_slot(dev, 1, NULL);
break;
}
/* Don't use active slot count to generate BTN_TOOL events. */
input_mt_report_pointer_emulation(dev, false);
/* Send the number of fingers reported by touchpad itself. */
input_mt_report_finger_count(dev, mt_state->count);
synaptics_report_buttons(psmouse, sgm);
input_sync(dev);
}
/* Handle case where mt_state->count = 0 */
static void synaptics_image_sensor_0f(struct synaptics_data *priv,
struct synaptics_mt_state *mt_state)
{
synaptics_mt_state_set(mt_state, 0, -1, -1);
priv->mt_state_lost = false;
}
/* Handle case where mt_state->count = 1 */
static void synaptics_image_sensor_1f(struct synaptics_data *priv,
struct synaptics_mt_state *mt_state)
{
struct synaptics_hw_state *agm = &priv->agm;
struct synaptics_mt_state *old = &priv->mt_state;
/*
* If the last AGM was (0,0,0), and there is only one finger left,
* then we absolutely know that SGM contains slot 0, and all other
* fingers have been removed.
*/
if (priv->agm_pending && agm->z == 0) {
synaptics_mt_state_set(mt_state, 1, 0, -1);
priv->mt_state_lost = false;
return;
}
switch (old->count) {
case 0:
synaptics_mt_state_set(mt_state, 1, 0, -1);
break;
case 1:
/*
* If mt_state_lost, then the previous transition was 3->1,
* and SGM now contains either slot 0 or 1, but we don't know
* which. So, we just assume that the SGM now contains slot 1.
*
* If pending AGM and either:
* (a) the previous SGM slot contains slot 0, or
* (b) there was no SGM slot
* then, the SGM now contains slot 1
*
* Case (a) happens with very rapid "drum roll" gestures, where
* slot 0 finger is lifted and a new slot 1 finger touches
* within one reporting interval.
*
* Case (b) happens if initially two or more fingers tap
* briefly, and all but one lift before the end of the first
* reporting interval.
*
* (In both these cases, slot 0 will becomes empty, so SGM
* contains slot 1 with the new finger)
*
* Else, if there was no previous SGM, it now contains slot 0.
*
* Otherwise, SGM still contains the same slot.
*/
if (priv->mt_state_lost ||
(priv->agm_pending && old->sgm <= 0))
synaptics_mt_state_set(mt_state, 1, 1, -1);
else if (old->sgm == -1)
synaptics_mt_state_set(mt_state, 1, 0, -1);
break;
case 2:
/*
* If mt_state_lost, we don't know which finger SGM contains.
*
* So, report 1 finger, but with both slots empty.
* We will use slot 1 on subsequent 1->1
*/
if (priv->mt_state_lost) {
synaptics_mt_state_set(mt_state, 1, -1, -1);
break;
}
/*
* Since the last AGM was NOT (0,0,0), it was the finger in
* slot 0 that has been removed.
* So, SGM now contains previous AGM's slot, and AGM is now
* empty.
*/
synaptics_mt_state_set(mt_state, 1, old->agm, -1);
break;
case 3:
/*
* Since last AGM was not (0,0,0), we don't know which finger
* is left.
*
* So, report 1 finger, but with both slots empty.
* We will use slot 1 on subsequent 1->1
*/
synaptics_mt_state_set(mt_state, 1, -1, -1);
priv->mt_state_lost = true;
break;
case 4:
case 5:
/* mt_state was updated by AGM-CONTACT packet */
break;
}
}
/* Handle case where mt_state->count = 2 */
static void synaptics_image_sensor_2f(struct synaptics_data *priv,
struct synaptics_mt_state *mt_state)
{
struct synaptics_mt_state *old = &priv->mt_state;
switch (old->count) {
case 0:
synaptics_mt_state_set(mt_state, 2, 0, 1);
break;
case 1:
/*
* If previous SGM contained slot 1 or higher, SGM now contains
* slot 0 (the newly touching finger) and AGM contains SGM's
* previous slot.
*
* Otherwise, SGM still contains slot 0 and AGM now contains
* slot 1.
*/
if (old->sgm >= 1)
synaptics_mt_state_set(mt_state, 2, 0, old->sgm);
else
synaptics_mt_state_set(mt_state, 2, 0, 1);
break;
case 2:
/*
* If mt_state_lost, SGM now contains either finger 1 or 2, but
* we don't know which.
* So, we just assume that the SGM contains slot 0 and AGM 1.
*/
if (priv->mt_state_lost)
synaptics_mt_state_set(mt_state, 2, 0, 1);
/*
* Otherwise, use the same mt_state, since it either hasn't
* changed, or was updated by a recently received AGM-CONTACT
* packet.
*/
break;
case 3:
/*
* 3->2 transitions have two unsolvable problems:
* 1) no indication is given which finger was removed
* 2) no way to tell if agm packet was for finger 3
* before 3->2, or finger 2 after 3->2.
*
* So, report 2 fingers, but empty all slots.
* We will guess slots [0,1] on subsequent 2->2.
*/
synaptics_mt_state_set(mt_state, 2, -1, -1);
priv->mt_state_lost = true;
break;
case 4:
case 5:
/* mt_state was updated by AGM-CONTACT packet */
break;
}
}
/* Handle case where mt_state->count = 3 */
static void synaptics_image_sensor_3f(struct synaptics_data *priv,
struct synaptics_mt_state *mt_state)
{
struct synaptics_mt_state *old = &priv->mt_state;
switch (old->count) {
case 0:
synaptics_mt_state_set(mt_state, 3, 0, 2);
break;
case 1:
/*
* If previous SGM contained slot 2 or higher, SGM now contains
* slot 0 (one of the newly touching fingers) and AGM contains
* SGM's previous slot.
*
* Otherwise, SGM now contains slot 0 and AGM contains slot 2.
*/
if (old->sgm >= 2)
synaptics_mt_state_set(mt_state, 3, 0, old->sgm);
else
synaptics_mt_state_set(mt_state, 3, 0, 2);
break;
case 2:
/*
* If the AGM previously contained slot 3 or higher, then the
* newly touching finger is in the lowest available slot.
*
* If SGM was previously 1 or higher, then the new SGM is
* now slot 0 (with a new finger), otherwise, the new finger
* is now in a hidden slot between 0 and AGM's slot.
*
* In all such cases, the SGM now contains slot 0, and the AGM
* continues to contain the same slot as before.
*/
if (old->agm >= 3) {
synaptics_mt_state_set(mt_state, 3, 0, old->agm);
break;
}
/*
* After some 3->1 and all 3->2 transitions, we lose track
* of which slot is reported by SGM and AGM.
*
* For 2->3 in this state, report 3 fingers, but empty all
* slots, and we will guess (0,2) on a subsequent 0->3.
*
* To userspace, the resulting transition will look like:
* 2:[0,1] -> 3:[-1,-1] -> 3:[0,2]
*/
if (priv->mt_state_lost) {
synaptics_mt_state_set(mt_state, 3, -1, -1);
break;
}
/*
* If the (SGM,AGM) really previously contained slots (0, 1),
* then we cannot know what slot was just reported by the AGM,
* because the 2->3 transition can occur either before or after
* the AGM packet. Thus, this most recent AGM could contain
* either the same old slot 1 or the new slot 2.
* Subsequent AGMs will be reporting slot 2.
*
* To userspace, the resulting transition will look like:
* 2:[0,1] -> 3:[0,-1] -> 3:[0,2]
*/
synaptics_mt_state_set(mt_state, 3, 0, -1);
break;
case 3:
/*
* If, for whatever reason, the previous agm was invalid,
* Assume SGM now contains slot 0, AGM now contains slot 2.
*/
if (old->agm <= 2)
synaptics_mt_state_set(mt_state, 3, 0, 2);
/*
* mt_state either hasn't changed, or was updated by a recently
* received AGM-CONTACT packet.
*/
break;
case 4:
case 5:
/* mt_state was updated by AGM-CONTACT packet */
break;
}
}
/* Handle case where mt_state->count = 4, or = 5 */
static void synaptics_image_sensor_45f(struct synaptics_data *priv,
struct synaptics_mt_state *mt_state)
{
/* mt_state was updated correctly by AGM-CONTACT packet */
priv->mt_state_lost = false;
}
static void synaptics_image_sensor_process(struct psmouse *psmouse,
struct synaptics_hw_state *sgm)
{
struct synaptics_data *priv = psmouse->private;
struct synaptics_hw_state *agm = &priv->agm;
struct synaptics_mt_state mt_state;
/* Initialize using current mt_state (as updated by last agm) */
mt_state = agm->mt_state;
/*
* Update mt_state using the new finger count and current mt_state.
*/
if (sgm->z == 0)
synaptics_image_sensor_0f(priv, &mt_state);
else if (sgm->w >= 4)
synaptics_image_sensor_1f(priv, &mt_state);
else if (sgm->w == 0)
synaptics_image_sensor_2f(priv, &mt_state);
else if (sgm->w == 1 && mt_state.count <= 3)
synaptics_image_sensor_3f(priv, &mt_state);
else
synaptics_image_sensor_45f(priv, &mt_state);
/* Send resulting input events to user space */
synaptics_report_mt_data(psmouse, &mt_state, sgm);
/* Store updated mt_state */
priv->mt_state = agm->mt_state = mt_state;
priv->agm_pending = false;
}
/*
* called for each full received packet from the touchpad
*/
static void synaptics_process_packet(struct psmouse *psmouse)
{
struct input_dev *dev = psmouse->dev;
struct synaptics_data *priv = psmouse->private;
struct synaptics_hw_state hw;
int num_fingers;
int finger_width;
if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
return;
if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
synaptics_image_sensor_process(psmouse, &hw);
return;
}
if (hw.scroll) {
priv->scroll += hw.scroll;
while (priv->scroll >= 4) {
input_report_key(dev, BTN_BACK, !hw.down);
input_sync(dev);
input_report_key(dev, BTN_BACK, hw.down);
input_sync(dev);
priv->scroll -= 4;
}
while (priv->scroll <= -4) {
input_report_key(dev, BTN_FORWARD, !hw.up);
input_sync(dev);
input_report_key(dev, BTN_FORWARD, hw.up);
input_sync(dev);
priv->scroll += 4;
}
return;
}
if (hw.z > 0 && hw.x > 1) {
num_fingers = 1;
finger_width = 5;
if (SYN_CAP_EXTENDED(priv->capabilities)) {
switch (hw.w) {
case 0 ... 1:
if (SYN_CAP_MULTIFINGER(priv->capabilities))
num_fingers = hw.w + 2;
break;
case 2:
if (SYN_MODEL_PEN(priv->model_id))
; /* Nothing, treat a pen as a single finger */
break;
case 4 ... 15:
if (SYN_CAP_PALMDETECT(priv->capabilities))
finger_width = hw.w;
break;
}
}
} else {
num_fingers = 0;
finger_width = 0;
}
if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
synaptics_report_semi_mt_data(dev, &hw, &priv->agm,
num_fingers);
/* Post events
* BTN_TOUCH has to be first as mousedev relies on it when doing
* absolute -> relative conversion
*/
if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
if (num_fingers > 0) {
input_report_abs(dev, ABS_X, hw.x);
input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y));
}
input_report_abs(dev, ABS_PRESSURE, hw.z);
if (SYN_CAP_PALMDETECT(priv->capabilities))
input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2);
input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3);
}
synaptics_report_buttons(psmouse, &hw);
input_sync(dev);
}
static int synaptics_validate_byte(struct psmouse *psmouse,
int idx, unsigned char pkt_type)
{
static const unsigned char newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
static const unsigned char newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
static const unsigned char newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
static const unsigned char oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
static const unsigned char oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
const char *packet = psmouse->packet;
if (idx < 0 || idx > 4)
return 0;
switch (pkt_type) {
case SYN_NEWABS:
case SYN_NEWABS_RELAXED:
return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
case SYN_NEWABS_STRICT:
return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
case SYN_OLDABS:
return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
default:
psmouse_err(psmouse, "unknown packet type %d\n", pkt_type);
return 0;
}
}
static unsigned char synaptics_detect_pkt_type(struct psmouse *psmouse)
{
int i;
for (i = 0; i < 5; i++)
if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) {
psmouse_info(psmouse, "using relaxed packet validation\n");
return SYN_NEWABS_RELAXED;
}
return SYN_NEWABS_STRICT;
}
static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse)
{
struct synaptics_data *priv = psmouse->private;
if (psmouse->pktcnt >= 6) { /* Full packet received */
if (unlikely(priv->pkt_type == SYN_NEWABS))
priv->pkt_type = synaptics_detect_pkt_type(psmouse);
if (SYN_CAP_PASS_THROUGH(priv->capabilities) &&
synaptics_is_pt_packet(psmouse->packet)) {
if (priv->pt_port)
synaptics_pass_pt_packet(priv->pt_port, psmouse->packet);
} else
synaptics_process_packet(psmouse);
return PSMOUSE_FULL_PACKET;
}
return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ?
PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
}
/*****************************************************************************
* Driver initialization/cleanup functions
****************************************************************************/
static void set_abs_position_params(struct input_dev *dev,
struct synaptics_data *priv, int x_code,
int y_code)
{
int x_min = priv->x_min ?: XMIN_NOMINAL;
int x_max = priv->x_max ?: XMAX_NOMINAL;
int y_min = priv->y_min ?: YMIN_NOMINAL;
int y_max = priv->y_max ?: YMAX_NOMINAL;
int fuzz = SYN_CAP_REDUCED_FILTERING(priv->ext_cap_0c) ?
SYN_REDUCED_FILTER_FUZZ : 0;
input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0);
input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0);
input_abs_set_res(dev, x_code, priv->x_res);
input_abs_set_res(dev, y_code, priv->y_res);
}
static void set_input_params(struct psmouse *psmouse,
struct synaptics_data *priv)
{
struct input_dev *dev = psmouse->dev;
int i;
/* Things that apply to both modes */
__set_bit(INPUT_PROP_POINTER, dev->propbit);
__set_bit(EV_KEY, dev->evbit);
__set_bit(BTN_LEFT, dev->keybit);
__set_bit(BTN_RIGHT, dev->keybit);
if (SYN_CAP_MIDDLE_BUTTON(priv->capabilities))
__set_bit(BTN_MIDDLE, dev->keybit);
if (!priv->absolute_mode) {
/* Relative mode */
__set_bit(EV_REL, dev->evbit);
__set_bit(REL_X, dev->relbit);
__set_bit(REL_Y, dev->relbit);
return;
}
/* Absolute mode */
__set_bit(EV_ABS, dev->evbit);
set_abs_position_params(dev, priv, ABS_X, ABS_Y);
input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
ABS_MT_POSITION_Y);
/* Image sensors can report per-contact pressure */
input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
input_mt_init_slots(dev, 2, INPUT_MT_POINTER);
/* Image sensors can signal 4 and 5 finger clicks */
__set_bit(BTN_TOOL_QUADTAP, dev->keybit);
__set_bit(BTN_TOOL_QUINTTAP, dev->keybit);
} else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) {
/* Non-image sensors with AGM use semi-mt */
__set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
input_mt_init_slots(dev, 2, 0);
set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
ABS_MT_POSITION_Y);
}
if (SYN_CAP_PALMDETECT(priv->capabilities))
input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
__set_bit(BTN_TOUCH, dev->keybit);
__set_bit(BTN_TOOL_FINGER, dev->keybit);
if (SYN_CAP_MULTIFINGER(priv->capabilities)) {
__set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
__set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
}
if (SYN_CAP_FOUR_BUTTON(priv->capabilities) ||
SYN_CAP_MIDDLE_BUTTON(priv->capabilities)) {
__set_bit(BTN_FORWARD, dev->keybit);
__set_bit(BTN_BACK, dev->keybit);
}
for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(priv->ext_cap); i++)
__set_bit(BTN_0 + i, dev->keybit);
__clear_bit(EV_REL, dev->evbit);
__clear_bit(REL_X, dev->relbit);
__clear_bit(REL_Y, dev->relbit);
if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
__set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
if (matches_pnp_id(psmouse, topbuttonpad_pnp_ids))
__set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
/* Clickpads report only left button */
__clear_bit(BTN_RIGHT, dev->keybit);
__clear_bit(BTN_MIDDLE, dev->keybit);
}
}
static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse,
void *data, char *buf)
{
struct synaptics_data *priv = psmouse->private;
return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');
}
static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse,
void *data, const char *buf,
size_t len)
{
struct synaptics_data *priv = psmouse->private;
unsigned int value;
int err;
err = kstrtouint(buf, 10, &value);
if (err)
return err;
if (value > 1)
return -EINVAL;
if (value == priv->disable_gesture)
return len;
priv->disable_gesture = value;
if (value)
priv->mode |= SYN_BIT_DISABLE_GESTURE;
else
priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
if (synaptics_mode_cmd(psmouse, priv->mode))
return -EIO;
return len;
}
PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL,
synaptics_show_disable_gesture,
synaptics_set_disable_gesture);
static void synaptics_disconnect(struct psmouse *psmouse)
{
struct synaptics_data *priv = psmouse->private;
if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity))
device_remove_file(&psmouse->ps2dev.serio->dev,
&psmouse_attr_disable_gesture.dattr);
synaptics_reset(psmouse);
kfree(priv);
psmouse->private = NULL;
}
static int synaptics_reconnect(struct psmouse *psmouse)
{
struct synaptics_data *priv = psmouse->private;
struct synaptics_data old_priv = *priv;
unsigned char param[2];
int retry = 0;
int error;
do {
psmouse_reset(psmouse);
if (retry) {
/*
* On some boxes, right after resuming, the touchpad
* needs some time to finish initializing (I assume
* it needs time to calibrate) and start responding
* to Synaptics-specific queries, so let's wait a
* bit.
*/
ssleep(1);
}
ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID);
error = synaptics_detect(psmouse, 0);
} while (error && ++retry < 3);
if (error)
return -1;
if (retry > 1)
psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
if (synaptics_query_hardware(psmouse)) {
psmouse_err(psmouse, "Unable to query device.\n");
return -1;
}
if (synaptics_set_mode(psmouse)) {
psmouse_err(psmouse, "Unable to initialize device.\n");
return -1;
}
if (old_priv.identity != priv->identity ||
old_priv.model_id != priv->model_id ||
old_priv.capabilities != priv->capabilities ||
old_priv.ext_cap != priv->ext_cap) {
psmouse_err(psmouse,
"hardware appears to be different: id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
old_priv.identity, priv->identity,
old_priv.model_id, priv->model_id,
old_priv.capabilities, priv->capabilities,
old_priv.ext_cap, priv->ext_cap);
return -1;
}
return 0;
}
static bool impaired_toshiba_kbc;
static const struct dmi_system_id toshiba_dmi_table[] __initconst = {
#if defined(CONFIG_DMI) && defined(CONFIG_X86)
{
/* Toshiba Satellite */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"),
},
},
{
/* Toshiba Dynabook */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"),
},
},
{
/* Toshiba Portege M300 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"),
},
},
{
/* Toshiba Portege M300 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"),
DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"),
},
},
#endif
{ }
};
static bool broken_olpc_ec;
static const struct dmi_system_id olpc_dmi_table[] __initconst = {
#if defined(CONFIG_DMI) && defined(CONFIG_OLPC)
{
/* OLPC XO-1 or XO-1.5 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
},
},
#endif
{ }
};
void __init synaptics_module_init(void)
{
impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table);
broken_olpc_ec = dmi_check_system(olpc_dmi_table);
}
static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
{
struct synaptics_data *priv;
int err = -1;
/*
* The OLPC XO has issues with Synaptics' absolute mode; the constant
* packet spew overloads the EC such that key presses on the keyboard
* are missed. Given that, don't even attempt to use Absolute mode.
* Relative mode seems to work just fine.
*/
if (absolute_mode && broken_olpc_ec) {
psmouse_info(psmouse,
"OLPC XO detected, not enabling Synaptics protocol.\n");
return -ENODEV;
}
psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
if (!priv)
return -ENOMEM;
psmouse_reset(psmouse);
if (synaptics_query_hardware(psmouse)) {
psmouse_err(psmouse, "Unable to query device.\n");
goto init_fail;
}
priv->absolute_mode = absolute_mode;
if (SYN_ID_DISGEST_SUPPORTED(priv->identity))
priv->disable_gesture = true;
if (synaptics_set_mode(psmouse)) {
psmouse_err(psmouse, "Unable to initialize device.\n");
goto init_fail;
}
priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
psmouse_info(psmouse,
"Touchpad model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx, board id: %lu, fw id: %lu\n",
SYN_ID_MODEL(priv->identity),
SYN_ID_MAJOR(priv->identity), SYN_ID_MINOR(priv->identity),
priv->model_id,
priv->capabilities, priv->ext_cap, priv->ext_cap_0c,
priv->board_id, priv->firmware_id);
set_input_params(psmouse, priv);
/*
* Encode touchpad model so that it can be used to set
* input device->id.version and be visible to userspace.
* Because version is __u16 we have to drop something.
* Hardware info bits seem to be good candidates as they
* are documented to be for Synaptics corp. internal use.
*/
psmouse->model = ((priv->model_id & 0x00ff0000) >> 8) |
(priv->model_id & 0x000000ff);
if (absolute_mode) {
psmouse->protocol_handler = synaptics_process_byte;
psmouse->pktsize = 6;
} else {
/* Relative mode follows standard PS/2 mouse protocol */
psmouse->protocol_handler = psmouse_process_byte;
psmouse->pktsize = 3;
}
psmouse->set_rate = synaptics_set_rate;
psmouse->disconnect = synaptics_disconnect;
psmouse->reconnect = synaptics_reconnect;
psmouse->cleanup = synaptics_reset;
/* Synaptics can usually stay in sync without extra help */
psmouse->resync_time = 0;
if (SYN_CAP_PASS_THROUGH(priv->capabilities))
synaptics_pt_create(psmouse);
/*
* Toshiba's KBC seems to have trouble handling data from
* Synaptics at full rate. Switch to a lower rate (roughly
* the same rate as a standard PS/2 mouse).
*/
if (psmouse->rate >= 80 && impaired_toshiba_kbc) {
psmouse_info(psmouse,
"Toshiba %s detected, limiting rate to 40pps.\n",
dmi_get_system_info(DMI_PRODUCT_NAME));
psmouse->rate = 40;
}
if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->identity)) {
err = device_create_file(&psmouse->ps2dev.serio->dev,
&psmouse_attr_disable_gesture.dattr);
if (err) {
psmouse_err(psmouse,
"Failed to create disable_gesture attribute (%d)",
err);
goto init_fail;
}
}
return 0;
init_fail:
kfree(priv);
return err;
}
int synaptics_init(struct psmouse *psmouse)
{
return __synaptics_init(psmouse, true);
}
int synaptics_init_relative(struct psmouse *psmouse)
{
return __synaptics_init(psmouse, false);
}
bool synaptics_supported(void)
{
return true;
}
#else /* CONFIG_MOUSE_PS2_SYNAPTICS */
void __init synaptics_module_init(void)
{
}
int synaptics_init(struct psmouse *psmouse)
{
return -ENOSYS;
}
bool synaptics_supported(void)
{
return false;
}
#endif /* CONFIG_MOUSE_PS2_SYNAPTICS */