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linux/drivers/input/mouse/synaptics.c

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/*
* 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/rmi.h>
#include <linux/i2c.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
/* maximum ABS_MT_POSITION displacement (in mm) */
#define DMAX 10
/*****************************************************************************
* 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, u8 mode)
{
u8 param[1];
int error;
error = ps2_sliced_command(&psmouse->ps2dev, mode);
if (error)
return error;
param[0] = SYN_PS_SET_MODE2;
error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE);
if (error)
return error;
return 0;
}
int synaptics_detect(struct psmouse *psmouse, bool set_properties)
{
struct ps2dev *ps2dev = &psmouse->ps2dev;
u8 param[4] = { 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);
}
#if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \
defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
/* 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", /* X1 Carbon 2nd */
"LEN0038",
"LEN0039", /* T440s */
"LEN0041",
"LEN0042", /* Yoga */
"LEN0045",
"LEN0047",
"LEN0049",
"LEN2000", /* S540 */
"LEN2001", /* Edge E431 */
"LEN2002", /* Edge E531 */
"LEN2003",
"LEN2004", /* L440 */
"LEN2005",
"LEN2006", /* Edge E440/E540 */
"LEN2007",
"LEN2008",
"LEN2009",
"LEN200A",
"LEN200B",
NULL
};
static const char * const smbus_pnp_ids[] = {
/* all of the topbuttonpad_pnp_ids are valid, we just add some extras */
"LEN0048", /* X1 Carbon 3 */
"LEN0046", /* X250 */
"LEN004a", /* W541 */
"LEN005b", /* P50 */
"LEN005e", /* T560 */
"LEN0071", /* T480 */
"LEN0072", /* X1 Carbon Gen 5 (2017) - Elan/ALPS trackpoint */
"LEN0073", /* X1 Carbon G5 (Elantech) */
"LEN0092", /* X1 Carbon 6 */
"LEN0096", /* X280 */
"LEN0097", /* X280 -> ALPS trackpoint */
"LEN200f", /* T450s */
"SYN3052", /* HP EliteBook 840 G4 */
"SYN3221", /* HP 15-ay000 */
NULL
};
static const char * const forcepad_pnp_ids[] = {
"SYN300D",
"SYN3014",
NULL
};
/*
* Send a command to the synpatics touchpad by special commands
*/
static int synaptics_send_cmd(struct psmouse *psmouse, u8 cmd, u8 *param)
{
int error;
error = ps2_sliced_command(&psmouse->ps2dev, cmd);
if (error)
return error;
error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO);
if (error)
return error;
return 0;
}
static int synaptics_query_int(struct psmouse *psmouse, u8 query_cmd, u32 *val)
{
int error;
union {
__be32 be_val;
char buf[4];
} resp = { 0 };
error = synaptics_send_cmd(psmouse, query_cmd, resp.buf + 1);
if (error)
return error;
*val = be32_to_cpu(resp.be_val);
return 0;
}
/*
* Identify Touchpad
* See also the SYN_ID_* macros
*/
static int synaptics_identify(struct psmouse *psmouse,
struct synaptics_device_info *info)
{
int error;
error = synaptics_query_int(psmouse, SYN_QUE_IDENTIFY, &info->identity);
if (error)
return error;
return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO;
}
/*
* Read the model-id bytes from the touchpad
* see also SYN_MODEL_* macros
*/
static int synaptics_model_id(struct psmouse *psmouse,
struct synaptics_device_info *info)
{
return synaptics_query_int(psmouse, SYN_QUE_MODEL, &info->model_id);
}
/*
* Read the firmware id from the touchpad
*/
static int synaptics_firmware_id(struct psmouse *psmouse,
struct synaptics_device_info *info)
{
return synaptics_query_int(psmouse, SYN_QUE_FIRMWARE_ID,
&info->firmware_id);
}
/*
* Read the board id and the "More Extended Queries" from the touchpad
* The board id is encoded in the "QUERY MODES" response
*/
static int synaptics_query_modes(struct psmouse *psmouse,
struct synaptics_device_info *info)
{
u8 bid[3];
int error;
/* firmwares prior 7.5 have no board_id encoded */
if (SYN_ID_FULL(info->identity) < 0x705)
return 0;
error = synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid);
if (error)
return error;
info->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
if (SYN_MEXT_CAP_BIT(bid[0]))
return synaptics_query_int(psmouse, SYN_QUE_MEXT_CAPAB_10,
&info->ext_cap_10);
return 0;
}
/*
* Read the capability-bits from the touchpad
* see also the SYN_CAP_* macros
*/
static int synaptics_capability(struct psmouse *psmouse,
struct synaptics_device_info *info)
{
int error;
error = synaptics_query_int(psmouse, SYN_QUE_CAPABILITIES,
&info->capabilities);
if (error)
return error;
info->ext_cap = info->ext_cap_0c = 0;
/*
* Older firmwares had submodel ID fixed to 0x47
*/
if (SYN_ID_FULL(info->identity) < 0x705 &&
SYN_CAP_SUBMODEL_ID(info->capabilities) != 0x47) {
return -ENXIO;
}
/*
* Unless capExtended is set the rest of the flags should be ignored
*/
if (!SYN_CAP_EXTENDED(info->capabilities))
info->capabilities = 0;
if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 1) {
error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB,
&info->ext_cap);
if (error) {
psmouse_warn(psmouse,
"device claims to have extended capabilities, but I'm not able to read them.\n");
} else {
/*
* if nExtBtn is greater than 8 it should be considered
* invalid and treated as 0
*/
if (SYN_CAP_MULTI_BUTTON_NO(info->ext_cap) > 8)
info->ext_cap &= ~SYN_CAP_MB_MASK;
}
}
if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 4) {
error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB_0C,
&info->ext_cap_0c);
if (error)
psmouse_warn(psmouse,
"device claims to have extended capability 0x0c, but I'm not able to read it.\n");
}
return 0;
}
/*
* 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_device_info *info)
{
u8 resp[3];
int error;
if (SYN_ID_MAJOR(info->identity) < 4)
return 0;
error = synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp);
if (!error) {
if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) {
info->x_res = resp[0]; /* x resolution in units/mm */
info->y_res = resp[2]; /* y resolution in units/mm */
}
}
if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 5 &&
SYN_CAP_MAX_DIMENSIONS(info->ext_cap_0c)) {
error = synaptics_send_cmd(psmouse,
SYN_QUE_EXT_MAX_COORDS, resp);
if (error) {
psmouse_warn(psmouse,
"device claims to have max coordinates query, but I'm not able to read it.\n");
} else {
info->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
info->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
psmouse_info(psmouse,
"queried max coordinates: x [..%d], y [..%d]\n",
info->x_max, info->y_max);
}
}
if (SYN_CAP_MIN_DIMENSIONS(info->ext_cap_0c) &&
(SYN_EXT_CAP_REQUESTS(info->capabilities) >= 7 ||
/*
* Firmware v8.1 does not report proper number of extended
* capabilities, but has been proven to report correct min
* coordinates.
*/
SYN_ID_FULL(info->identity) == 0x801)) {
error = synaptics_send_cmd(psmouse,
SYN_QUE_EXT_MIN_COORDS, resp);
if (error) {
psmouse_warn(psmouse,
"device claims to have min coordinates query, but I'm not able to read it.\n");
} else {
info->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1);
info->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3);
psmouse_info(psmouse,
"queried min coordinates: x [%d..], y [%d..]\n",
info->x_min, info->y_min);
}
}
return 0;
}
static int synaptics_query_hardware(struct psmouse *psmouse,
struct synaptics_device_info *info)
{
int error;
memset(info, 0, sizeof(*info));
error = synaptics_identify(psmouse, info);
if (error)
return error;
error = synaptics_model_id(psmouse, info);
if (error)
return error;
error = synaptics_firmware_id(psmouse, info);
if (error)
return error;
error = synaptics_query_modes(psmouse, info);
if (error)
return error;
error = synaptics_capability(psmouse, info);
if (error)
return error;
error = synaptics_resolution(psmouse, info);
if (error)
return error;
return 0;
}
#endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
#ifdef CONFIG_MOUSE_PS2_SYNAPTICS
static bool cr48_profile_sensor;
#define ANY_BOARD_ID 0
struct min_max_quirk {
const char * const *pnp_ids;
struct {
u32 min, max;
} board_id;
u32 x_min, x_max, y_min, y_max;
};
static const struct min_max_quirk min_max_pnpid_table[] = {
{
(const char * const []){"LEN0033", NULL},
{ANY_BOARD_ID, ANY_BOARD_ID},
1024, 5052, 2258, 4832
},
{
(const char * const []){"LEN0042", NULL},
{ANY_BOARD_ID, ANY_BOARD_ID},
1232, 5710, 1156, 4696
},
{
(const char * const []){"LEN0034", "LEN0036", "LEN0037",
"LEN0039", "LEN2002", "LEN2004",
NULL},
{ANY_BOARD_ID, 2961},
1024, 5112, 2024, 4832
},
{
(const char * const []){"LEN2000", NULL},
{ANY_BOARD_ID, ANY_BOARD_ID},
1024, 5113, 2021, 4832
},
{
(const char * const []){"LEN2001", NULL},
{ANY_BOARD_ID, ANY_BOARD_ID},
1024, 5022, 2508, 4832
},
{
(const char * const []){"LEN2006", NULL},
{2691, 2691},
1024, 5045, 2457, 4832
},
{
(const char * const []){"LEN2006", NULL},
{ANY_BOARD_ID, ANY_BOARD_ID},
1264, 5675, 1171, 4688
},
{ }
};
/*****************************************************************************
* 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;
}
/*
* Apply quirk(s) if the hardware matches
*/
static void synaptics_apply_quirks(struct psmouse *psmouse,
struct synaptics_device_info *info)
{
int i;
for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) {
if (!psmouse_matches_pnp_id(psmouse,
min_max_pnpid_table[i].pnp_ids))
continue;
if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID &&
info->board_id < min_max_pnpid_table[i].board_id.min)
continue;
if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID &&
info->board_id > min_max_pnpid_table[i].board_id.max)
continue;
info->x_min = min_max_pnpid_table[i].x_min;
info->x_max = min_max_pnpid_table[i].x_max;
info->y_min = min_max_pnpid_table[i].y_min;
info->y_max = min_max_pnpid_table[i].y_max;
psmouse_info(psmouse,
"quirked min/max coordinates: x [%d..%d], y [%d..%d]\n",
info->x_min, info->x_max,
info->y_min, info->y_max);
break;
}
}
static bool synaptics_has_agm(struct synaptics_data *priv)
{
return (SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) ||
SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c));
}
static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
{
static u8 param = 0xc8;
int error;
error = ps2_sliced_command(&psmouse->ps2dev, SYN_QUE_MODEL);
if (error)
return error;
error = ps2_command(&psmouse->ps2dev, &param, PSMOUSE_CMD_SETRATE);
if (error)
return error;
return 0;
}
static int synaptics_set_mode(struct psmouse *psmouse)
{
struct synaptics_data *priv = psmouse->private;
int error;
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->info.capabilities))
priv->mode |= SYN_BIT_W_MODE;
error = synaptics_mode_cmd(psmouse, priv->mode);
if (error)
return error;
if (priv->absolute_mode && synaptics_has_agm(priv)) {
error = synaptics_set_advanced_gesture_mode(psmouse);
if (error) {
psmouse_err(psmouse,
"Advanced gesture mode init failed: %d\n",
error);
return error;
}
}
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, u8 c)
{
struct psmouse *parent = serio_get_drvdata(serio->parent);
u8 rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */
int error;
error = ps2_sliced_command(&parent->ps2dev, c);
if (error)
return error;
error = ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE);
if (error)
return error;
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(u8 *buf)
{
return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;
}
static void synaptics_pass_pt_packet(struct serio *ptport, u8 *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_parse_agm(const u8 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: we are only interested in the count */
priv->agm_count = buf[1];
break;
default:
break;
}
}
static void synaptics_parse_ext_buttons(const u8 buf[],
struct synaptics_data *priv,
struct synaptics_hw_state *hw)
{
unsigned int ext_bits =
(SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
unsigned int ext_mask = GENMASK(ext_bits - 1, 0);
hw->ext_buttons = buf[4] & ext_mask;
hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits;
}
static int synaptics_parse_hw_state(const u8 buf[],
struct synaptics_data *priv,
struct synaptics_hw_state *hw)
{
memset(hw, 0, sizeof(struct synaptics_hw_state));
if (SYN_MODEL_NEWABS(priv->info.model_id)) {
hw->w = (((buf[0] & 0x30) >> 2) |
((buf[0] & 0x04) >> 1) |
((buf[3] & 0x04) >> 2));
if (synaptics_has_agm(priv) && 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 (priv->is_forcepad) {
/*
* 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->info.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->info.capabilities)) {
hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
if (hw->w == 2)
hw->scroll = (s8)buf[1];
}
if (SYN_CAP_FOUR_BUTTON(priv->info.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->info.ext_cap) > 0 &&
((buf[0] ^ buf[3]) & 0x02)) {
synaptics_parse_ext_buttons(buf, priv, hw);
}
} 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_ext_buttons(struct psmouse *psmouse,
const struct synaptics_hw_state *hw)
{
struct input_dev *dev = psmouse->dev;
struct synaptics_data *priv = psmouse->private;
int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1;
int i;
if (!SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap))
return;
/* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */
if ((SYN_ID_FULL(priv->info.identity) == 0x801 ||
SYN_ID_FULL(priv->info.identity) == 0x802) &&
!((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02))
return;
if (!SYN_CAP_EXT_BUTTONS_STICK(priv->info.ext_cap_10)) {
for (i = 0; i < ext_bits; i++) {
input_report_key(dev, BTN_0 + 2 * i,
hw->ext_buttons & BIT(i));
input_report_key(dev, BTN_1 + 2 * i,
hw->ext_buttons & BIT(i + ext_bits));
}
return;
}
/*
* This generation of touchpads has the trackstick buttons
* physically wired to the touchpad. Re-route them through
* the pass-through interface.
*/
if (priv->pt_port) {
u8 pt_buttons;
/* The trackstick expects at most 3 buttons */
pt_buttons = SYN_EXT_BUTTON_STICK_L(hw->ext_buttons) |
SYN_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 |
SYN_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2;
serio_interrupt(priv->pt_port,
PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA);
serio_interrupt(priv->pt_port, pt_buttons, SERIO_OOB_DATA);
}
}
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;
input_report_key(dev, BTN_LEFT, hw->left);
input_report_key(dev, BTN_RIGHT, hw->right);
if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities))
input_report_key(dev, BTN_MIDDLE, hw->middle);
if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) {
input_report_key(dev, BTN_FORWARD, hw->up);
input_report_key(dev, BTN_BACK, hw->down);
}
synaptics_report_ext_buttons(psmouse, hw);
}
static void synaptics_report_mt_data(struct psmouse *psmouse,
const struct synaptics_hw_state *sgm,
int num_fingers)
{
struct input_dev *dev = psmouse->dev;
struct synaptics_data *priv = psmouse->private;
const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm };
struct input_mt_pos pos[2];
int slot[2], nsemi, i;
nsemi = clamp_val(num_fingers, 0, 2);
for (i = 0; i < nsemi; i++) {
pos[i].x = hw[i]->x;
pos[i].y = synaptics_invert_y(hw[i]->y);
}
input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->info.x_res);
for (i = 0; i < nsemi; i++) {
input_mt_slot(dev, slot[i]);
input_mt_report_slot_state(dev, MT_TOOL_FINGER, true);
input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x);
input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y);
input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z);
}
input_mt_drop_unused(dev);
/* 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, num_fingers);
synaptics_report_buttons(psmouse, sgm);
input_sync(dev);
}
static void synaptics_image_sensor_process(struct psmouse *psmouse,
struct synaptics_hw_state *sgm)
{
struct synaptics_data *priv = psmouse->private;
int num_fingers;
/*
* Update mt_state using the new finger count and current mt_state.
*/
if (sgm->z == 0)
num_fingers = 0;
else if (sgm->w >= 4)
num_fingers = 1;
else if (sgm->w == 0)
num_fingers = 2;
else if (sgm->w == 1)
num_fingers = priv->agm_count ? priv->agm_count : 3;
else
num_fingers = 4;
/* Send resulting input events to user space */
synaptics_report_mt_data(psmouse, sgm, num_fingers);
}
static bool synaptics_has_multifinger(struct synaptics_data *priv)
{
if (SYN_CAP_MULTIFINGER(priv->info.capabilities))
return true;
/* Advanced gesture mode also sends multi finger data */
return synaptics_has_agm(priv);
}
/*
* 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_device_info *info = &priv->info;
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(info->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(info->capabilities)) {
switch (hw.w) {
case 0 ... 1:
if (synaptics_has_multifinger(priv))
num_fingers = hw.w + 2;
break;
case 2:
if (SYN_MODEL_PEN(info->model_id))
; /* Nothing, treat a pen as a single finger */
break;
case 4 ... 15:
if (SYN_CAP_PALMDETECT(info->capabilities))
finger_width = hw.w;
break;
}
}
} else {
num_fingers = 0;
finger_width = 0;
}
if (cr48_profile_sensor) {
synaptics_report_mt_data(psmouse, &hw, num_fingers);
return;
}
if (SYN_CAP_ADV_GESTURE(info->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(info->capabilities))
input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1);
if (synaptics_has_multifinger(priv)) {
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 bool synaptics_validate_byte(struct psmouse *psmouse,
int idx, enum synaptics_pkt_type pkt_type)
{
static const u8 newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 };
static const u8 newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 };
static const u8 newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 };
static const u8 oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 };
static const u8 oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 };
const u8 *packet = psmouse->packet;
if (idx < 0 || idx > 4)
return false;
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 false;
}
}
static enum synaptics_pkt_type
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->info.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_device_info *info,
int x_code, int y_code)
{
int x_min = info->x_min ?: XMIN_NOMINAL;
int x_max = info->x_max ?: XMAX_NOMINAL;
int y_min = info->y_min ?: YMIN_NOMINAL;
int y_max = info->y_max ?: YMAX_NOMINAL;
int fuzz = SYN_CAP_REDUCED_FILTERING(info->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, info->x_res);
input_abs_set_res(dev, y_code, info->y_res);
}
static int set_input_params(struct psmouse *psmouse,
struct synaptics_data *priv)
{
struct input_dev *dev = psmouse->dev;
struct synaptics_device_info *info = &priv->info;
int i;
int error;
/* Reset default psmouse capabilities */
__clear_bit(EV_REL, dev->evbit);
bitmap_zero(dev->relbit, REL_CNT);
bitmap_zero(dev->keybit, KEY_CNT);
/* Things that apply to both modes */
__set_bit(INPUT_PROP_POINTER, dev->propbit);
input_set_capability(dev, EV_KEY, BTN_LEFT);
/* Clickpads report only left button */
if (!SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
input_set_capability(dev, EV_KEY, BTN_RIGHT);
if (SYN_CAP_MIDDLE_BUTTON(info->capabilities))
input_set_capability(dev, EV_KEY, BTN_MIDDLE);
}
if (!priv->absolute_mode) {
/* Relative mode */
input_set_capability(dev, EV_REL, REL_X);
input_set_capability(dev, EV_REL, REL_Y);
return 0;
}
/* Absolute mode */
set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
if (cr48_profile_sensor)
input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) {
set_abs_position_params(dev, info,
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);
error = input_mt_init_slots(dev, 2,
INPUT_MT_POINTER | INPUT_MT_TRACK);
if (error)
return error;
/* Image sensors can signal 4 and 5 finger clicks */
input_set_capability(dev, EV_KEY, BTN_TOOL_QUADTAP);
input_set_capability(dev, EV_KEY, BTN_TOOL_QUINTTAP);
} else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) {
set_abs_position_params(dev, info,
ABS_MT_POSITION_X, ABS_MT_POSITION_Y);
/*
* Profile sensor in CR-48 tracks contacts reasonably well,
* other non-image sensors with AGM use semi-mt.
*/
error = input_mt_init_slots(dev, 2,
INPUT_MT_POINTER |
(cr48_profile_sensor ?
INPUT_MT_TRACK :
INPUT_MT_SEMI_MT));
if (error)
return error;
/*
* For semi-mt devices we send ABS_X/Y ourselves instead of
* input_mt_report_pointer_emulation. But
* input_mt_init_slots() resets the fuzz to 0, leading to a
* filtered ABS_MT_POSITION_X but an unfiltered ABS_X
* position. Let's re-initialize ABS_X/Y here.
*/
if (!cr48_profile_sensor)
set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y);
}
if (SYN_CAP_PALMDETECT(info->capabilities))
input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
input_set_capability(dev, EV_KEY, BTN_TOUCH);
input_set_capability(dev, EV_KEY, BTN_TOOL_FINGER);
if (synaptics_has_multifinger(priv)) {
input_set_capability(dev, EV_KEY, BTN_TOOL_DOUBLETAP);
input_set_capability(dev, EV_KEY, BTN_TOOL_TRIPLETAP);
}
if (SYN_CAP_FOUR_BUTTON(info->capabilities) ||
SYN_CAP_MIDDLE_BUTTON(info->capabilities)) {
input_set_capability(dev, EV_KEY, BTN_FORWARD);
input_set_capability(dev, EV_KEY, BTN_BACK);
}
if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++)
input_set_capability(dev, EV_KEY, BTN_0 + i);
if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) {
__set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10))
__set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit);
}
return 0;
}
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;
/*
* We might have left a breadcrumb when trying to
* set up SMbus companion.
*/
psmouse_smbus_cleanup(psmouse);
if (!priv->absolute_mode &&
SYN_ID_DISGEST_SUPPORTED(priv->info.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_device_info info;
u8 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 error;
if (retry > 1)
psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
error = synaptics_query_hardware(psmouse, &info);
if (error) {
psmouse_err(psmouse, "Unable to query device.\n");
return error;
}
error = synaptics_set_mode(psmouse);
if (error) {
psmouse_err(psmouse, "Unable to initialize device.\n");
return error;
}
if (info.identity != priv->info.identity ||
info.model_id != priv->info.model_id ||
info.capabilities != priv->info.capabilities ||
info.ext_cap != priv->info.ext_cap) {
psmouse_err(psmouse,
"hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n",
priv->info.identity, info.identity,
priv->info.model_id, info.model_id,
priv->info.capabilities, info.capabilities,
priv->info.ext_cap, info.ext_cap);
return -ENXIO;
}
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
{ }
};
static const struct dmi_system_id __initconst cr48_dmi_table[] = {
#if defined(CONFIG_DMI) && defined(CONFIG_X86)
{
/* Cr-48 Chromebook (Codename Mario) */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "IEC"),
DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
},
},
#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);
cr48_profile_sensor = dmi_check_system(cr48_dmi_table);
}
static int synaptics_init_ps2(struct psmouse *psmouse,
struct synaptics_device_info *info,
bool absolute_mode)
{
struct synaptics_data *priv;
int err;
synaptics_apply_quirks(psmouse, info);
psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->info = *info;
priv->absolute_mode = absolute_mode;
if (SYN_ID_DISGEST_SUPPORTED(info->identity))
priv->disable_gesture = true;
/*
* Unfortunately ForcePad capability is not exported over PS/2,
* so we have to resort to checking PNP IDs.
*/
priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids);
err = synaptics_set_mode(psmouse);
if (err) {
psmouse_err(psmouse, "Unable to initialize device.\n");
goto init_fail;
}
priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ?
SYN_NEWABS : SYN_OLDABS;
psmouse_info(psmouse,
"Touchpad model: %lu, fw: %lu.%lu, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n",
SYN_ID_MODEL(info->identity),
SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity),
info->model_id,
info->capabilities, info->ext_cap, info->ext_cap_0c,
info->ext_cap_10, info->board_id, info->firmware_id);
err = set_input_params(psmouse, priv);
if (err) {
psmouse_err(psmouse,
"failed to set up capabilities: %d\n", err);
goto init_fail;
}
/*
* 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 = ((info->model_id & 0x00ff0000) >> 8) |
(info->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(info->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(info->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;
}
static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode)
{
struct synaptics_device_info info;
int error;
psmouse_reset(psmouse);
error = synaptics_query_hardware(psmouse, &info);
if (error) {
psmouse_err(psmouse, "Unable to query device: %d\n", error);
return error;
}
return synaptics_init_ps2(psmouse, &info, absolute_mode);
}
int synaptics_init_absolute(struct psmouse *psmouse)
{
return __synaptics_init(psmouse, true);
}
int synaptics_init_relative(struct psmouse *psmouse)
{
return __synaptics_init(psmouse, false);
}
static int synaptics_setup_ps2(struct psmouse *psmouse,
struct synaptics_device_info *info)
{
bool absolute_mode = true;
int error;
/*
* 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 (broken_olpc_ec) {
psmouse_info(psmouse,
"OLPC XO detected, forcing relative protocol.\n");
absolute_mode = false;
}
error = synaptics_init_ps2(psmouse, info, absolute_mode);
if (error)
return error;
return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE;
}
#else /* CONFIG_MOUSE_PS2_SYNAPTICS */
void __init synaptics_module_init(void)
{
}
static int __maybe_unused
synaptics_setup_ps2(struct psmouse *psmouse,
struct synaptics_device_info *info)
{
return -ENOSYS;
}
#endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
#ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS
/*
* The newest Synaptics device can use a secondary bus (called InterTouch) which
* provides a better bandwidth and allow a better control of the touchpads.
* This is used to decide if we need to use this bus or not.
*/
enum {
SYNAPTICS_INTERTOUCH_NOT_SET = -1,
SYNAPTICS_INTERTOUCH_OFF,
SYNAPTICS_INTERTOUCH_ON,
};
static int synaptics_intertouch = IS_ENABLED(CONFIG_RMI4_SMB) ?
SYNAPTICS_INTERTOUCH_NOT_SET : SYNAPTICS_INTERTOUCH_OFF;
module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644);
MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device.");
static int synaptics_create_intertouch(struct psmouse *psmouse,
struct synaptics_device_info *info,
bool leave_breadcrumbs)
{
bool topbuttonpad =
psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10);
const struct rmi_device_platform_data pdata = {
.sensor_pdata = {
.sensor_type = rmi_sensor_touchpad,
.axis_align.flip_y = true,
.kernel_tracking = false,
.topbuttonpad = topbuttonpad,
},
.f30_data = {
.buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c),
.trackstick_buttons =
!!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10),
},
};
const struct i2c_board_info intertouch_board = {
I2C_BOARD_INFO("rmi4_smbus", 0x2c),
.flags = I2C_CLIENT_HOST_NOTIFY,
};
return psmouse_smbus_init(psmouse, &intertouch_board,
&pdata, sizeof(pdata), true,
leave_breadcrumbs);
}
/**
* synaptics_setup_intertouch - called once the PS/2 devices are enumerated
* and decides to instantiate a SMBus InterTouch device.
*/
static int synaptics_setup_intertouch(struct psmouse *psmouse,
struct synaptics_device_info *info,
bool leave_breadcrumbs)
{
int error;
if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF)
return -ENXIO;
if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) {
if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) &&
!psmouse_matches_pnp_id(psmouse, smbus_pnp_ids)) {
if (!psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids))
psmouse_info(psmouse,
"Your touchpad (%s) says it can support a different bus. "
"If i2c-hid and hid-rmi are not used, you might want to try setting psmouse.synaptics_intertouch to 1 and report this to linux-input@vger.kernel.org.\n",
psmouse->ps2dev.serio->firmware_id);
return -ENXIO;
}
}
psmouse_info(psmouse, "Trying to set up SMBus access\n");
error = synaptics_create_intertouch(psmouse, info, leave_breadcrumbs);
if (error) {
if (error == -EAGAIN)
psmouse_info(psmouse, "SMbus companion is not ready yet\n");
else
psmouse_err(psmouse, "unable to create intertouch device\n");
return error;
}
return 0;
}
int synaptics_init_smbus(struct psmouse *psmouse)
{
struct synaptics_device_info info;
int error;
psmouse_reset(psmouse);
error = synaptics_query_hardware(psmouse, &info);
if (error) {
psmouse_err(psmouse, "Unable to query device: %d\n", error);
return error;
}
if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c))
return -ENXIO;
return synaptics_create_intertouch(psmouse, &info, false);
}
#else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
static int __maybe_unused
synaptics_setup_intertouch(struct psmouse *psmouse,
struct synaptics_device_info *info,
bool leave_breadcrumbs)
{
return -ENOSYS;
}
int synaptics_init_smbus(struct psmouse *psmouse)
{
return -ENOSYS;
}
#endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
#if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \
defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
int synaptics_init(struct psmouse *psmouse)
{
struct synaptics_device_info info;
int error;
int retval;
psmouse_reset(psmouse);
error = synaptics_query_hardware(psmouse, &info);
if (error) {
psmouse_err(psmouse, "Unable to query device: %d\n", error);
return error;
}
if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) {
if ((!IS_ENABLED(CONFIG_RMI4_SMB) ||
!IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) &&
/* Forcepads need F21, which is not ready */
!psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) {
psmouse_warn(psmouse,
"The touchpad can support a better bus than the too old PS/2 protocol. "
"Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.\n");
}
error = synaptics_setup_intertouch(psmouse, &info, true);
if (!error)
return PSMOUSE_SYNAPTICS_SMBUS;
}
retval = synaptics_setup_ps2(psmouse, &info);
if (retval < 0) {
/*
* Not using any flavor of Synaptics support, so clean up
* SMbus breadcrumbs, if any.
*/
psmouse_smbus_cleanup(psmouse);
}
return retval;
}
#else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
int synaptics_init(struct psmouse *psmouse)
{
return -ENOSYS;
}
#endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
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