![Seth Forshee](/assets/img/avatar_default.png)
The touchpad on the Acer Aspire One D250 will report out of range values in the extreme lower portion of the touchpad. These appear as abrupt changes in the values reported by the hardware from very low values to very high values, which can cause unexpected vertical jumps in the position of the mouse pointer. What seems to be happening is that the value is wrapping to a two's compliment negative value of higher resolution than the 13-bit value reported by the hardware, with the high-order bits being truncated. This patch adds handling for these values by converting them to the appropriate negative values. The only tricky part about this is deciding when to treat a number as negative. It stands to reason that if out of range values can be reported on the low end then it could also happen on the high end, so not all out of range values should be treated as negative. The approach taken here is to split the difference between the maximum legitimate value for the axis and the maximum possible value that the hardware can report, treating values greater than this number as negative and all other values as positive. This can be tweaked later if hardware is found that operates outside of these parameters. BugLink: http://bugs.launchpad.net/bugs/1001251 Cc: stable@vger.kernel.org Signed-off-by: Seth Forshee <seth.forshee@canonical.com> Reviewed-by: Daniel Kurtz <djkurtz@chromium.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
1593 lines
43 KiB
C
1593 lines
43 KiB
C
/*
|
|
* 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
|
|
|
|
/*
|
|
* Any position values from the hardware above the following limits are
|
|
* treated as "wrapped around negative" values that have been truncated to
|
|
* the 13-bit reporting range of the hardware. These are just reasonable
|
|
* guesses and can be adjusted if hardware is found that operates outside
|
|
* of these parameters.
|
|
*/
|
|
#define X_MAX_POSITIVE (((1 << ABS_POS_BITS) + XMAX) / 2)
|
|
#define Y_MAX_POSITIVE (((1 << ABS_POS_BITS) + YMAX) / 2)
|
|
|
|
/*****************************************************************************
|
|
* 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
|
|
|
|
/*****************************************************************************
|
|
* 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];
|
|
|
|
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 */
|
|
}
|
|
}
|
|
|
|
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, ¶m, 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));
|
|
|
|
hw->left = (buf[0] & 0x01) ? 1 : 0;
|
|
hw->right = (buf[0] & 0x02) ? 1 : 0;
|
|
|
|
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_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];
|
|
|
|
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 */
|
|
if (hw->x > X_MAX_POSITIVE)
|
|
hw->x -= 1 << ABS_POS_BITS;
|
|
if (hw->y > Y_MAX_POSITIVE)
|
|
hw->y -= 1 << ABS_POS_BITS;
|
|
|
|
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, 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))
|
|
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.
|
|
*/
|
|
if (mt_state->agm != -1 &&
|
|
(mt_state->agm == old->agm || old->agm == -1))
|
|
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 input_dev *dev, struct synaptics_data *priv)
|
|
{
|
|
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)) {
|
|
input_mt_init_slots(dev, 2);
|
|
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);
|
|
|
|
/* 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);
|
|
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);
|
|
/* 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;
|
|
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);
|
|
}
|
|
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 __initconst toshiba_dmi_table[] = {
|
|
#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 __initconst olpc_dmi_table[] = {
|
|
#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->dev, 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 */
|