mirror of
https://github.com/adulau/aha.git
synced 2024-12-27 03:06:10 +00:00
Input: psmouse - add support for Elantech touchpads
This is version 5 of the driver. Relative mode support has been dropped (users wishing to use touchpad in relative mode can use standard PS/2 protocol emulation done in hardware). The driver supports both original version of Elantech protocol and the newer one used by touchpads installed in EeePC. Signed-off-by: Arjan Opmeer <arjan@opmeer.net> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Arjan Opmeer
Dmitry Torokhov
parent
2c6f2cb83b
commit
2a0bd75e5e
7 changed files with 1251 additions and 2 deletions
405
Documentation/input/elantech.txt
Normal file
405
Documentation/input/elantech.txt
Normal file
|
|
@ -0,0 +1,405 @@
|
|||
Elantech Touchpad Driver
|
||||
========================
|
||||
|
||||
Copyright (C) 2007-2008 Arjan Opmeer <arjan@opmeer.net>
|
||||
|
||||
Extra information for hardware version 1 found and
|
||||
provided by Steve Havelka
|
||||
|
||||
Version 2 (EeePC) hardware support based on patches
|
||||
received from Woody at Xandros and forwarded to me
|
||||
by user StewieGriffin at the eeeuser.com forum
|
||||
|
||||
|
||||
Contents
|
||||
~~~~~~~~
|
||||
|
||||
1. Introduction
|
||||
2. Extra knobs
|
||||
3. Hardware version 1
|
||||
3.1 Registers
|
||||
3.2 Native relative mode 4 byte packet format
|
||||
3.3 Native absolute mode 4 byte packet format
|
||||
4. Hardware version 2
|
||||
4.1 Registers
|
||||
4.2 Native absolute mode 6 byte packet format
|
||||
4.2.1 One finger touch
|
||||
4.2.2 Two finger touch
|
||||
|
||||
|
||||
|
||||
1. Introduction
|
||||
~~~~~~~~~~~~
|
||||
|
||||
Currently the Linux Elantech touchpad driver is aware of two different
|
||||
hardware versions unimaginatively called version 1 and version 2. Version 1
|
||||
is found in "older" laptops and uses 4 bytes per packet. Version 2 seems to
|
||||
be introduced with the EeePC and uses 6 bytes per packet.
|
||||
|
||||
The driver tries to support both hardware versions and should be compatible
|
||||
with the Xorg Synaptics touchpad driver and its graphical configuration
|
||||
utilities.
|
||||
|
||||
Additionally the operation of the touchpad can be altered by adjusting the
|
||||
contents of some of its internal registers. These registers are represented
|
||||
by the driver as sysfs entries under /sys/bus/serio/drivers/psmouse/serio?
|
||||
that can be read from and written to.
|
||||
|
||||
Currently only the registers for hardware version 1 are somewhat understood.
|
||||
Hardware version 2 seems to use some of the same registers but it is not
|
||||
known whether the bits in the registers represent the same thing or might
|
||||
have changed their meaning.
|
||||
|
||||
On top of that, some register settings have effect only when the touchpad is
|
||||
in relative mode and not in absolute mode. As the Linux Elantech touchpad
|
||||
driver always puts the hardware into absolute mode not all information
|
||||
mentioned below can be used immediately. But because there is no freely
|
||||
available Elantech documentation the information is provided here anyway for
|
||||
completeness sake.
|
||||
|
||||
|
||||
/////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
|
||||
2. Extra knobs
|
||||
~~~~~~~~~~~
|
||||
|
||||
Currently the Linux Elantech touchpad driver provides two extra knobs under
|
||||
/sys/bus/serio/drivers/psmouse/serio? for the user.
|
||||
|
||||
* debug
|
||||
|
||||
Turn different levels of debugging ON or OFF.
|
||||
|
||||
By echoing "0" to this file all debugging will be turned OFF.
|
||||
|
||||
Currently a value of "1" will turn on some basic debugging and a value of
|
||||
"2" will turn on packet debugging. For hardware version 1 the default is
|
||||
OFF. For version 2 the default is "1".
|
||||
|
||||
Turning packet debugging on will make the driver dump every packet
|
||||
received to the syslog before processing it. Be warned that this can
|
||||
generate quite a lot of data!
|
||||
|
||||
* paritycheck
|
||||
|
||||
Turns parity checking ON or OFF.
|
||||
|
||||
By echoing "0" to this file parity checking will be turned OFF. Any
|
||||
non-zero value will turn it ON. For hardware version 1 the default is ON.
|
||||
For version 2 the default it is OFF.
|
||||
|
||||
Hardware version 1 provides basic data integrity verification by
|
||||
calculating a parity bit for the last 3 bytes of each packet. The driver
|
||||
can check these bits and reject any packet that appears corrupted. Using
|
||||
this knob you can bypass that check.
|
||||
|
||||
It is not known yet whether hardware version 2 provides the same parity
|
||||
bits. Hence checking is disabled by default. Currently even turning it on
|
||||
will do nothing.
|
||||
|
||||
|
||||
/////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
|
||||
3. Hardware version 1
|
||||
==================
|
||||
|
||||
3.1 Registers
|
||||
~~~~~~~~~
|
||||
|
||||
By echoing a hexadecimal value to a register it contents can be altered.
|
||||
|
||||
For example:
|
||||
|
||||
echo -n 0x16 > reg_10
|
||||
|
||||
* reg_10
|
||||
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
B C T D L A S E
|
||||
|
||||
E: 1 = enable smart edges unconditionally
|
||||
S: 1 = enable smart edges only when dragging
|
||||
A: 1 = absolute mode (needs 4 byte packets, see reg_11)
|
||||
L: 1 = enable drag lock (see reg_22)
|
||||
D: 1 = disable dynamic resolution
|
||||
T: 1 = disable tapping
|
||||
C: 1 = enable corner tap
|
||||
B: 1 = swap left and right button
|
||||
|
||||
* reg_11
|
||||
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
1 0 0 H V 1 F P
|
||||
|
||||
P: 1 = enable parity checking for relative mode
|
||||
F: 1 = enable native 4 byte packet mode
|
||||
V: 1 = enable vertical scroll area
|
||||
H: 1 = enable horizontal scroll area
|
||||
|
||||
* reg_20
|
||||
|
||||
single finger width?
|
||||
|
||||
* reg_21
|
||||
|
||||
scroll area width (small: 0x40 ... wide: 0xff)
|
||||
|
||||
* reg_22
|
||||
|
||||
drag lock time out (short: 0x14 ... long: 0xfe;
|
||||
0xff = tap again to release)
|
||||
|
||||
* reg_23
|
||||
|
||||
tap make timeout?
|
||||
|
||||
* reg_24
|
||||
|
||||
tap release timeout?
|
||||
|
||||
* reg_25
|
||||
|
||||
smart edge cursor speed (0x02 = slow, 0x03 = medium, 0x04 = fast)
|
||||
|
||||
* reg_26
|
||||
|
||||
smart edge activation area width?
|
||||
|
||||
|
||||
3.2 Native relative mode 4 byte packet format
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
byte 0:
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
c c p2 p1 1 M R L
|
||||
|
||||
L, R, M = 1 when Left, Right, Middle mouse button pressed
|
||||
some models have M as byte 3 odd parity bit
|
||||
when parity checking is enabled (reg_11, P = 1):
|
||||
p1..p2 = byte 1 and 2 odd parity bit
|
||||
c = 1 when corner tap detected
|
||||
|
||||
byte 1:
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
dx7 dx6 dx5 dx4 dx3 dx2 dx1 dx0
|
||||
|
||||
dx7..dx0 = x movement; positive = right, negative = left
|
||||
byte 1 = 0xf0 when corner tap detected
|
||||
|
||||
byte 2:
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
dy7 dy6 dy5 dy4 dy3 dy2 dy1 dy0
|
||||
|
||||
dy7..dy0 = y movement; positive = up, negative = down
|
||||
|
||||
byte 3:
|
||||
parity checking enabled (reg_11, P = 1):
|
||||
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
w h n1 n0 ds3 ds2 ds1 ds0
|
||||
|
||||
normally:
|
||||
ds3..ds0 = scroll wheel amount and direction
|
||||
positive = down or left
|
||||
negative = up or right
|
||||
when corner tap detected:
|
||||
ds0 = 1 when top right corner tapped
|
||||
ds1 = 1 when bottom right corner tapped
|
||||
ds2 = 1 when bottom left corner tapped
|
||||
ds3 = 1 when top left corner tapped
|
||||
n1..n0 = number of fingers on touchpad
|
||||
only models with firmware 2.x report this, models with
|
||||
firmware 1.x seem to map one, two and three finger taps
|
||||
directly to L, M and R mouse buttons
|
||||
h = 1 when horizontal scroll action
|
||||
w = 1 when wide finger touch?
|
||||
|
||||
otherwise (reg_11, P = 0):
|
||||
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
ds7 ds6 ds5 ds4 ds3 ds2 ds1 ds0
|
||||
|
||||
ds7..ds0 = vertical scroll amount and direction
|
||||
negative = up
|
||||
positive = down
|
||||
|
||||
|
||||
3.3 Native absolute mode 4 byte packet format
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
byte 0:
|
||||
firmware version 1.x:
|
||||
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
D U p1 p2 1 p3 R L
|
||||
|
||||
L, R = 1 when Left, Right mouse button pressed
|
||||
p1..p3 = byte 1..3 odd parity bit
|
||||
D, U = 1 when rocker switch pressed Up, Down
|
||||
|
||||
firmware version 2.x:
|
||||
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
n1 n0 p2 p1 1 p3 R L
|
||||
|
||||
L, R = 1 when Left, Right mouse button pressed
|
||||
p1..p3 = byte 1..3 odd parity bit
|
||||
n1..n0 = number of fingers on touchpad
|
||||
|
||||
byte 1:
|
||||
firmware version 1.x:
|
||||
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
f 0 th tw x9 x8 y9 y8
|
||||
|
||||
tw = 1 when two finger touch
|
||||
th = 1 when three finger touch
|
||||
f = 1 when finger touch
|
||||
|
||||
firmware version 2.x:
|
||||
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
. . . . x9 x8 y9 y8
|
||||
|
||||
byte 2:
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
x7 x6 x5 x4 x3 x2 x1 x0
|
||||
|
||||
x9..x0 = absolute x value (horizontal)
|
||||
|
||||
byte 3:
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
y7 y6 y5 y4 y3 y2 y1 y0
|
||||
|
||||
y9..y0 = absolute y value (vertical)
|
||||
|
||||
|
||||
/////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
|
||||
4. Hardware version 2
|
||||
==================
|
||||
|
||||
|
||||
4.1 Registers
|
||||
~~~~~~~~~
|
||||
|
||||
By echoing a hexadecimal value to a register it contents can be altered.
|
||||
|
||||
For example:
|
||||
|
||||
echo -n 0x56 > reg_10
|
||||
|
||||
* reg_10
|
||||
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
0 1 0 1 0 1 D 0
|
||||
|
||||
D: 1 = enable drag and drop
|
||||
|
||||
* reg_11
|
||||
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
1 0 0 0 S 0 1 0
|
||||
|
||||
S: 1 = enable vertical scroll
|
||||
|
||||
* reg_21
|
||||
|
||||
unknown (0x00)
|
||||
|
||||
* reg_22
|
||||
|
||||
drag and drop release time out (short: 0x70 ... long 0x7e;
|
||||
0x7f = never i.e. tap again to release)
|
||||
|
||||
|
||||
4.2 Native absolute mode 6 byte packet format
|
||||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||||
|
||||
4.2.1 One finger touch
|
||||
~~~~~~~~~~~~~~~~
|
||||
|
||||
byte 0:
|
||||
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
n1 n0 . . . . R L
|
||||
|
||||
L, R = 1 when Left, Right mouse button pressed
|
||||
n1..n0 = numbers of fingers on touchpad
|
||||
|
||||
byte 1:
|
||||
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
x15 x14 x13 x12 x11 x10 x9 x8
|
||||
|
||||
byte 2:
|
||||
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
x7 x6 x5 x4 x4 x2 x1 x0
|
||||
|
||||
x15..x0 = absolute x value (horizontal)
|
||||
|
||||
byte 3:
|
||||
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
. . . . . . . .
|
||||
|
||||
byte 4:
|
||||
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
y15 y14 y13 y12 y11 y10 y8 y8
|
||||
|
||||
byte 5:
|
||||
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
y7 y6 y5 y4 y3 y2 y1 y0
|
||||
|
||||
y15..y0 = absolute y value (vertical)
|
||||
|
||||
|
||||
4.2.2 Two finger touch
|
||||
~~~~~~~~~~~~~~~~
|
||||
|
||||
byte 0:
|
||||
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
n1 n0 ay8 ax8 . . R L
|
||||
|
||||
L, R = 1 when Left, Right mouse button pressed
|
||||
n1..n0 = numbers of fingers on touchpad
|
||||
|
||||
byte 1:
|
||||
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
ax7 ax6 ax5 ax4 ax3 ax2 ax1 ax0
|
||||
|
||||
ax8..ax0 = first finger absolute x value
|
||||
|
||||
byte 2:
|
||||
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
ay7 ay6 ay5 ay4 ay3 ay2 ay1 ay0
|
||||
|
||||
ay8..ay0 = first finger absolute y value
|
||||
|
||||
byte 3:
|
||||
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
. . by8 bx8 . . . .
|
||||
|
||||
byte 4:
|
||||
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
bx7 bx6 bx5 bx4 bx3 bx2 bx1 bx0
|
||||
|
||||
bx8..bx0 = second finger absolute x value
|
||||
|
||||
byte 5:
|
||||
|
||||
bit 7 6 5 4 3 2 1 0
|
||||
by7 by8 by5 by4 by3 by2 by1 by0
|
||||
|
||||
by8..by0 = second finger absolute y value
|
||||
|
|
@ -25,8 +25,8 @@ config MOUSE_PS2
|
|||
mice with wheels and extra buttons, Microsoft, Logitech or Genius
|
||||
compatible.
|
||||
|
||||
Synaptics TouchPad users might be interested in a specialized
|
||||
XFree86 driver at:
|
||||
Synaptics, ALPS or Elantech TouchPad users might be interested
|
||||
in a specialized Xorg/XFree86 driver at:
|
||||
<http://w1.894.telia.com/~u89404340/touchpad/index.html>
|
||||
and a new version of GPM at:
|
||||
<http://www.geocities.com/dt_or/gpm/gpm.html>
|
||||
|
|
@ -87,6 +87,27 @@ config MOUSE_PS2_TRACKPOINT
|
|||
|
||||
If unsure, say Y.
|
||||
|
||||
config MOUSE_PS2_ELANTECH
|
||||
bool "Elantech PS/2 protocol extension"
|
||||
depends on MOUSE_PS2
|
||||
help
|
||||
Say Y here if you have an Elantech PS/2 touchpad connected
|
||||
to your system.
|
||||
|
||||
Note that if you enable this driver you will need an updated
|
||||
X.org Synaptics driver that does not require ABS_PRESSURE
|
||||
reports from the touchpad (i.e. post 1.5.0 version). You can
|
||||
grab a patch for the driver here:
|
||||
|
||||
http://userweb.kernel.org/~dtor/synaptics-no-abspressure.patch
|
||||
|
||||
If unsure, say N.
|
||||
|
||||
This driver exposes some configuration registers via sysfs
|
||||
entries. For further information,
|
||||
see <file:Documentation/input/elantech.txt>.
|
||||
|
||||
|
||||
config MOUSE_PS2_TOUCHKIT
|
||||
bool "eGalax TouchKit PS/2 protocol extension"
|
||||
depends on MOUSE_PS2
|
||||
|
|
|
|||
|
|
@ -21,6 +21,7 @@ obj-$(CONFIG_MOUSE_GPIO) += gpio_mouse.o
|
|||
psmouse-objs := psmouse-base.o synaptics.o
|
||||
|
||||
psmouse-$(CONFIG_MOUSE_PS2_ALPS) += alps.o
|
||||
psmouse-$(CONFIG_MOUSE_PS2_ELANTECH) += elantech.o
|
||||
psmouse-$(CONFIG_MOUSE_PS2_OLPC) += hgpk.o
|
||||
psmouse-$(CONFIG_MOUSE_PS2_LOGIPS2PP) += logips2pp.o
|
||||
psmouse-$(CONFIG_MOUSE_PS2_LIFEBOOK) += lifebook.o
|
||||
|
|
|
|||
674
drivers/input/mouse/elantech.c
Normal file
674
drivers/input/mouse/elantech.c
Normal file
|
|
@ -0,0 +1,674 @@
|
|||
/*
|
||||
* Elantech Touchpad driver (v5)
|
||||
*
|
||||
* Copyright (C) 2007-2008 Arjan Opmeer <arjan@opmeer.net>
|
||||
*
|
||||
* 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/delay.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/input.h>
|
||||
#include <linux/serio.h>
|
||||
#include <linux/libps2.h>
|
||||
#include "psmouse.h"
|
||||
#include "elantech.h"
|
||||
|
||||
#define elantech_debug(format, arg...) \
|
||||
do { \
|
||||
if (etd->debug) \
|
||||
printk(KERN_DEBUG format, ##arg); \
|
||||
} while (0)
|
||||
|
||||
/*
|
||||
* Send a Synaptics style sliced query command
|
||||
*/
|
||||
static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c,
|
||||
unsigned char *param)
|
||||
{
|
||||
if (psmouse_sliced_command(psmouse, c) ||
|
||||
ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) {
|
||||
pr_err("elantech.c: synaptics_send_cmd query 0x%02x failed.\n", c);
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* A retrying version of ps2_command
|
||||
*/
|
||||
static int elantech_ps2_command(struct psmouse *psmouse,
|
||||
unsigned char *param, int command)
|
||||
{
|
||||
struct ps2dev *ps2dev = &psmouse->ps2dev;
|
||||
struct elantech_data *etd = psmouse->private;
|
||||
int rc;
|
||||
int tries = ETP_PS2_COMMAND_TRIES;
|
||||
|
||||
do {
|
||||
rc = ps2_command(ps2dev, param, command);
|
||||
if (rc == 0)
|
||||
break;
|
||||
tries--;
|
||||
elantech_debug("elantech.c: retrying ps2 command 0x%02x (%d).\n",
|
||||
command, tries);
|
||||
msleep(ETP_PS2_COMMAND_DELAY);
|
||||
} while (tries > 0);
|
||||
|
||||
if (rc)
|
||||
pr_err("elantech.c: ps2 command 0x%02x failed.\n", command);
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
/*
|
||||
* Send an Elantech style special command to read a value from a register
|
||||
*/
|
||||
static int elantech_read_reg(struct psmouse *psmouse, unsigned char reg,
|
||||
unsigned char *val)
|
||||
{
|
||||
struct elantech_data *etd = psmouse->private;
|
||||
unsigned char param[3];
|
||||
int rc = 0;
|
||||
|
||||
if (reg < 0x10 || reg > 0x26)
|
||||
return -1;
|
||||
|
||||
if (reg > 0x11 && reg < 0x20)
|
||||
return -1;
|
||||
|
||||
switch (etd->hw_version) {
|
||||
case 1:
|
||||
if (psmouse_sliced_command(psmouse, ETP_REGISTER_READ) ||
|
||||
psmouse_sliced_command(psmouse, reg) ||
|
||||
ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) {
|
||||
rc = -1;
|
||||
}
|
||||
break;
|
||||
|
||||
case 2:
|
||||
if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
|
||||
elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READ) ||
|
||||
elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
|
||||
elantech_ps2_command(psmouse, NULL, reg) ||
|
||||
elantech_ps2_command(psmouse, param, PSMOUSE_CMD_GETINFO)) {
|
||||
rc = -1;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
if (rc)
|
||||
pr_err("elantech.c: failed to read register 0x%02x.\n", reg);
|
||||
else
|
||||
*val = param[0];
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
/*
|
||||
* Send an Elantech style special command to write a register with a value
|
||||
*/
|
||||
static int elantech_write_reg(struct psmouse *psmouse, unsigned char reg,
|
||||
unsigned char val)
|
||||
{
|
||||
struct elantech_data *etd = psmouse->private;
|
||||
int rc = 0;
|
||||
|
||||
if (reg < 0x10 || reg > 0x26)
|
||||
return -1;
|
||||
|
||||
if (reg > 0x11 && reg < 0x20)
|
||||
return -1;
|
||||
|
||||
switch (etd->hw_version) {
|
||||
case 1:
|
||||
if (psmouse_sliced_command(psmouse, ETP_REGISTER_WRITE) ||
|
||||
psmouse_sliced_command(psmouse, reg) ||
|
||||
psmouse_sliced_command(psmouse, val) ||
|
||||
ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11)) {
|
||||
rc = -1;
|
||||
}
|
||||
break;
|
||||
|
||||
case 2:
|
||||
if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
|
||||
elantech_ps2_command(psmouse, NULL, ETP_REGISTER_WRITE) ||
|
||||
elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
|
||||
elantech_ps2_command(psmouse, NULL, reg) ||
|
||||
elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) ||
|
||||
elantech_ps2_command(psmouse, NULL, val) ||
|
||||
elantech_ps2_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11)) {
|
||||
rc = -1;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
if (rc)
|
||||
pr_err("elantech.c: failed to write register 0x%02x with value 0x%02x.\n",
|
||||
reg, val);
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
/*
|
||||
* Dump a complete mouse movement packet to the syslog
|
||||
*/
|
||||
static void elantech_packet_dump(unsigned char *packet, int size)
|
||||
{
|
||||
int i;
|
||||
|
||||
printk(KERN_DEBUG "elantech.c: PS/2 packet [");
|
||||
for (i = 0; i < size; i++)
|
||||
printk("%s0x%02x ", (i) ? ", " : " ", packet[i]);
|
||||
printk("]\n");
|
||||
}
|
||||
|
||||
/*
|
||||
* Interpret complete data packets and report absolute mode input events for
|
||||
* hardware version 1. (4 byte packets)
|
||||
*/
|
||||
static void elantech_report_absolute_v1(struct psmouse *psmouse)
|
||||
{
|
||||
struct input_dev *dev = psmouse->dev;
|
||||
struct elantech_data *etd = psmouse->private;
|
||||
unsigned char *packet = psmouse->packet;
|
||||
int fingers;
|
||||
|
||||
if (etd->fw_version_maj == 0x01) {
|
||||
/* byte 0: D U p1 p2 1 p3 R L
|
||||
byte 1: f 0 th tw x9 x8 y9 y8 */
|
||||
fingers = ((packet[1] & 0x80) >> 7) +
|
||||
((packet[1] & 0x30) >> 4);
|
||||
} else {
|
||||
/* byte 0: n1 n0 p2 p1 1 p3 R L
|
||||
byte 1: 0 0 0 0 x9 x8 y9 y8 */
|
||||
fingers = (packet[0] & 0xc0) >> 6;
|
||||
}
|
||||
|
||||
input_report_key(dev, BTN_TOUCH, fingers != 0);
|
||||
|
||||
/* byte 2: x7 x6 x5 x4 x3 x2 x1 x0
|
||||
byte 3: y7 y6 y5 y4 y3 y2 y1 y0 */
|
||||
if (fingers) {
|
||||
input_report_abs(dev, ABS_X,
|
||||
((packet[1] & 0x0c) << 6) | packet[2]);
|
||||
input_report_abs(dev, ABS_Y, ETP_YMAX_V1 -
|
||||
(((packet[1] & 0x03) << 8) | packet[3]));
|
||||
}
|
||||
|
||||
input_report_key(dev, BTN_TOOL_FINGER, fingers == 1);
|
||||
input_report_key(dev, BTN_TOOL_DOUBLETAP, fingers == 2);
|
||||
input_report_key(dev, BTN_TOOL_TRIPLETAP, fingers == 3);
|
||||
input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
|
||||
input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
|
||||
|
||||
if ((etd->fw_version_maj == 0x01) &&
|
||||
(etd->capabilities & ETP_CAP_HAS_ROCKER)) {
|
||||
/* rocker up */
|
||||
input_report_key(dev, BTN_FORWARD, packet[0] & 0x40);
|
||||
/* rocker down */
|
||||
input_report_key(dev, BTN_BACK, packet[0] & 0x80);
|
||||
}
|
||||
|
||||
input_sync(dev);
|
||||
}
|
||||
|
||||
/*
|
||||
* Interpret complete data packets and report absolute mode input events for
|
||||
* hardware version 2. (6 byte packets)
|
||||
*/
|
||||
static void elantech_report_absolute_v2(struct psmouse *psmouse)
|
||||
{
|
||||
struct input_dev *dev = psmouse->dev;
|
||||
unsigned char *packet = psmouse->packet;
|
||||
int fingers, x1, y1, x2, y2;
|
||||
|
||||
/* byte 0: n1 n0 . . . . R L */
|
||||
fingers = (packet[0] & 0xc0) >> 6;
|
||||
input_report_key(dev, BTN_TOUCH, fingers != 0);
|
||||
|
||||
switch (fingers) {
|
||||
case 1:
|
||||
/* byte 1: x15 x14 x13 x12 x11 x10 x9 x8
|
||||
byte 2: x7 x6 x5 x4 x4 x2 x1 x0 */
|
||||
input_report_abs(dev, ABS_X, (packet[1] << 8) | packet[2]);
|
||||
/* byte 4: y15 y14 y13 y12 y11 y10 y8 y8
|
||||
byte 5: y7 y6 y5 y4 y3 y2 y1 y0 */
|
||||
input_report_abs(dev, ABS_Y, ETP_YMAX_V2 -
|
||||
((packet[4] << 8) | packet[5]));
|
||||
break;
|
||||
|
||||
case 2:
|
||||
/* The coordinate of each finger is reported separately with
|
||||
a lower resolution for two finger touches */
|
||||
/* byte 0: . . ay8 ax8 . . . .
|
||||
byte 1: ax7 ax6 ax5 ax4 ax3 ax2 ax1 ax0 */
|
||||
x1 = ((packet[0] & 0x10) << 4) | packet[1];
|
||||
/* byte 2: ay7 ay6 ay5 ay4 ay3 ay2 ay1 ay0 */
|
||||
y1 = ETP_2FT_YMAX - (((packet[0] & 0x20) << 3) | packet[2]);
|
||||
/* byte 3: . . by8 bx8 . . . .
|
||||
byte 4: bx7 bx6 bx5 bx4 bx3 bx2 bx1 bx0 */
|
||||
x2 = ((packet[3] & 0x10) << 4) | packet[4];
|
||||
/* byte 5: by7 by8 by5 by4 by3 by2 by1 by0 */
|
||||
y2 = ETP_2FT_YMAX - (((packet[3] & 0x20) << 3) | packet[5]);
|
||||
/* For compatibility with the X Synaptics driver scale up one
|
||||
coordinate and report as ordinary mouse movent */
|
||||
input_report_abs(dev, ABS_X, x1 << 2);
|
||||
input_report_abs(dev, ABS_Y, y1 << 2);
|
||||
/* For compatibility with the proprietary X Elantech driver
|
||||
report both coordinates as hat coordinates */
|
||||
input_report_abs(dev, ABS_HAT0X, x1);
|
||||
input_report_abs(dev, ABS_HAT0Y, y1);
|
||||
input_report_abs(dev, ABS_HAT1X, x2);
|
||||
input_report_abs(dev, ABS_HAT1Y, y2);
|
||||
break;
|
||||
}
|
||||
|
||||
input_report_key(dev, BTN_TOOL_FINGER, fingers == 1);
|
||||
input_report_key(dev, BTN_TOOL_DOUBLETAP, fingers == 2);
|
||||
input_report_key(dev, BTN_TOOL_TRIPLETAP, fingers == 3);
|
||||
input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
|
||||
input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
|
||||
|
||||
input_sync(dev);
|
||||
}
|
||||
|
||||
static int elantech_check_parity_v1(struct psmouse *psmouse)
|
||||
{
|
||||
struct elantech_data *etd = psmouse->private;
|
||||
unsigned char *packet = psmouse->packet;
|
||||
unsigned char p1, p2, p3;
|
||||
|
||||
/* Parity bits are placed differently */
|
||||
if (etd->fw_version_maj == 0x01) {
|
||||
/* byte 0: D U p1 p2 1 p3 R L */
|
||||
p1 = (packet[0] & 0x20) >> 5;
|
||||
p2 = (packet[0] & 0x10) >> 4;
|
||||
} else {
|
||||
/* byte 0: n1 n0 p2 p1 1 p3 R L */
|
||||
p1 = (packet[0] & 0x10) >> 4;
|
||||
p2 = (packet[0] & 0x20) >> 5;
|
||||
}
|
||||
|
||||
p3 = (packet[0] & 0x04) >> 2;
|
||||
|
||||
return etd->parity[packet[1]] == p1 &&
|
||||
etd->parity[packet[2]] == p2 &&
|
||||
etd->parity[packet[3]] == p3;
|
||||
}
|
||||
|
||||
/*
|
||||
* Process byte stream from mouse and handle complete packets
|
||||
*/
|
||||
static psmouse_ret_t elantech_process_byte(struct psmouse *psmouse)
|
||||
{
|
||||
struct elantech_data *etd = psmouse->private;
|
||||
|
||||
if (psmouse->pktcnt < psmouse->pktsize)
|
||||
return PSMOUSE_GOOD_DATA;
|
||||
|
||||
if (etd->debug > 1)
|
||||
elantech_packet_dump(psmouse->packet, psmouse->pktsize);
|
||||
|
||||
switch (etd->hw_version) {
|
||||
case 1:
|
||||
if (etd->paritycheck && !elantech_check_parity_v1(psmouse))
|
||||
return PSMOUSE_BAD_DATA;
|
||||
|
||||
elantech_report_absolute_v1(psmouse);
|
||||
break;
|
||||
|
||||
case 2:
|
||||
/* We don't know how to check parity in protocol v2 */
|
||||
elantech_report_absolute_v2(psmouse);
|
||||
break;
|
||||
}
|
||||
|
||||
return PSMOUSE_FULL_PACKET;
|
||||
}
|
||||
|
||||
/*
|
||||
* Put the touchpad into absolute mode
|
||||
*/
|
||||
static int elantech_set_absolute_mode(struct psmouse *psmouse)
|
||||
{
|
||||
struct elantech_data *etd = psmouse->private;
|
||||
unsigned char val;
|
||||
int tries = ETP_READ_BACK_TRIES;
|
||||
int rc = 0;
|
||||
|
||||
switch (etd->hw_version) {
|
||||
case 1:
|
||||
etd->reg_10 = 0x16;
|
||||
etd->reg_11 = 0x8f;
|
||||
if (elantech_write_reg(psmouse, 0x10, etd->reg_10) ||
|
||||
elantech_write_reg(psmouse, 0x11, etd->reg_11)) {
|
||||
rc = -1;
|
||||
}
|
||||
break;
|
||||
|
||||
case 2:
|
||||
/* Windows driver values */
|
||||
etd->reg_10 = 0x54;
|
||||
etd->reg_11 = 0x88; /* 0x8a */
|
||||
etd->reg_21 = 0x60; /* 0x00 */
|
||||
if (elantech_write_reg(psmouse, 0x10, etd->reg_10) ||
|
||||
elantech_write_reg(psmouse, 0x11, etd->reg_11) ||
|
||||
elantech_write_reg(psmouse, 0x21, etd->reg_21)) {
|
||||
rc = -1;
|
||||
break;
|
||||
}
|
||||
/*
|
||||
* Read back reg 0x10. The touchpad is probably initalising
|
||||
* and not ready until we read back the value we just wrote.
|
||||
*/
|
||||
do {
|
||||
rc = elantech_read_reg(psmouse, 0x10, &val);
|
||||
if (rc == 0)
|
||||
break;
|
||||
tries--;
|
||||
elantech_debug("elantech.c: retrying read (%d).\n",
|
||||
tries);
|
||||
msleep(ETP_READ_BACK_DELAY);
|
||||
} while (tries > 0);
|
||||
if (rc)
|
||||
pr_err("elantech.c: failed to read back register 0x10.\n");
|
||||
break;
|
||||
}
|
||||
|
||||
if (rc)
|
||||
pr_err("elantech.c: failed to initialise registers.\n");
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
/*
|
||||
* Set the appropriate event bits for the input subsystem
|
||||
*/
|
||||
static void elantech_set_input_params(struct psmouse *psmouse)
|
||||
{
|
||||
struct input_dev *dev = psmouse->dev;
|
||||
struct elantech_data *etd = psmouse->private;
|
||||
|
||||
__set_bit(EV_KEY, dev->evbit);
|
||||
__set_bit(EV_ABS, dev->evbit);
|
||||
|
||||
__set_bit(BTN_LEFT, dev->keybit);
|
||||
__set_bit(BTN_RIGHT, dev->keybit);
|
||||
|
||||
__set_bit(BTN_TOUCH, dev->keybit);
|
||||
__set_bit(BTN_TOOL_FINGER, dev->keybit);
|
||||
__set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
|
||||
__set_bit(BTN_TOOL_TRIPLETAP, dev->keybit);
|
||||
|
||||
switch (etd->hw_version) {
|
||||
case 1:
|
||||
/* Rocker button */
|
||||
if ((etd->fw_version_maj == 0x01) &&
|
||||
(etd->capabilities & ETP_CAP_HAS_ROCKER)) {
|
||||
__set_bit(BTN_FORWARD, dev->keybit);
|
||||
__set_bit(BTN_BACK, dev->keybit);
|
||||
}
|
||||
input_set_abs_params(dev, ABS_X, ETP_XMIN_V1, ETP_XMAX_V1, 0, 0);
|
||||
input_set_abs_params(dev, ABS_Y, ETP_YMIN_V1, ETP_YMAX_V1, 0, 0);
|
||||
break;
|
||||
|
||||
case 2:
|
||||
input_set_abs_params(dev, ABS_X, ETP_XMIN_V2, ETP_XMAX_V2, 0, 0);
|
||||
input_set_abs_params(dev, ABS_Y, ETP_YMIN_V2, ETP_YMAX_V2, 0, 0);
|
||||
input_set_abs_params(dev, ABS_HAT0X, ETP_2FT_XMIN, ETP_2FT_XMAX, 0, 0);
|
||||
input_set_abs_params(dev, ABS_HAT0Y, ETP_2FT_YMIN, ETP_2FT_YMAX, 0, 0);
|
||||
input_set_abs_params(dev, ABS_HAT1X, ETP_2FT_XMIN, ETP_2FT_XMAX, 0, 0);
|
||||
input_set_abs_params(dev, ABS_HAT1Y, ETP_2FT_YMIN, ETP_2FT_YMAX, 0, 0);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
struct elantech_attr_data {
|
||||
size_t field_offset;
|
||||
unsigned char reg;
|
||||
};
|
||||
|
||||
/*
|
||||
* Display a register value by reading a sysfs entry
|
||||
*/
|
||||
static ssize_t elantech_show_int_attr(struct psmouse *psmouse, void *data,
|
||||
char *buf)
|
||||
{
|
||||
struct elantech_data *etd = psmouse->private;
|
||||
struct elantech_attr_data *attr = data;
|
||||
unsigned char *reg = (unsigned char *) etd + attr->field_offset;
|
||||
int rc = 0;
|
||||
|
||||
if (attr->reg)
|
||||
rc = elantech_read_reg(psmouse, attr->reg, reg);
|
||||
|
||||
return sprintf(buf, "0x%02x\n", (attr->reg && rc) ? -1 : *reg);
|
||||
}
|
||||
|
||||
/*
|
||||
* Write a register value by writing a sysfs entry
|
||||
*/
|
||||
static ssize_t elantech_set_int_attr(struct psmouse *psmouse,
|
||||
void *data, const char *buf, size_t count)
|
||||
{
|
||||
struct elantech_data *etd = psmouse->private;
|
||||
struct elantech_attr_data *attr = data;
|
||||
unsigned char *reg = (unsigned char *) etd + attr->field_offset;
|
||||
unsigned long value;
|
||||
int err;
|
||||
|
||||
err = strict_strtoul(buf, 16, &value);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
if (value > 0xff)
|
||||
return -EINVAL;
|
||||
|
||||
/* Do we need to preserve some bits for version 2 hardware too? */
|
||||
if (etd->hw_version == 1) {
|
||||
if (attr->reg == 0x10)
|
||||
/* Force absolute mode always on */
|
||||
value |= ETP_R10_ABSOLUTE_MODE;
|
||||
else if (attr->reg == 0x11)
|
||||
/* Force 4 byte mode always on */
|
||||
value |= ETP_R11_4_BYTE_MODE;
|
||||
}
|
||||
|
||||
if (!attr->reg || elantech_write_reg(psmouse, attr->reg, value) == 0)
|
||||
*reg = value;
|
||||
|
||||
return count;
|
||||
}
|
||||
|
||||
#define ELANTECH_INT_ATTR(_name, _register) \
|
||||
static struct elantech_attr_data elantech_attr_##_name = { \
|
||||
.field_offset = offsetof(struct elantech_data, _name), \
|
||||
.reg = _register, \
|
||||
}; \
|
||||
PSMOUSE_DEFINE_ATTR(_name, S_IWUSR | S_IRUGO, \
|
||||
&elantech_attr_##_name, \
|
||||
elantech_show_int_attr, \
|
||||
elantech_set_int_attr)
|
||||
|
||||
ELANTECH_INT_ATTR(reg_10, 0x10);
|
||||
ELANTECH_INT_ATTR(reg_11, 0x11);
|
||||
ELANTECH_INT_ATTR(reg_20, 0x20);
|
||||
ELANTECH_INT_ATTR(reg_21, 0x21);
|
||||
ELANTECH_INT_ATTR(reg_22, 0x22);
|
||||
ELANTECH_INT_ATTR(reg_23, 0x23);
|
||||
ELANTECH_INT_ATTR(reg_24, 0x24);
|
||||
ELANTECH_INT_ATTR(reg_25, 0x25);
|
||||
ELANTECH_INT_ATTR(reg_26, 0x26);
|
||||
ELANTECH_INT_ATTR(debug, 0);
|
||||
ELANTECH_INT_ATTR(paritycheck, 0);
|
||||
|
||||
static struct attribute *elantech_attrs[] = {
|
||||
&psmouse_attr_reg_10.dattr.attr,
|
||||
&psmouse_attr_reg_11.dattr.attr,
|
||||
&psmouse_attr_reg_20.dattr.attr,
|
||||
&psmouse_attr_reg_21.dattr.attr,
|
||||
&psmouse_attr_reg_22.dattr.attr,
|
||||
&psmouse_attr_reg_23.dattr.attr,
|
||||
&psmouse_attr_reg_24.dattr.attr,
|
||||
&psmouse_attr_reg_25.dattr.attr,
|
||||
&psmouse_attr_reg_26.dattr.attr,
|
||||
&psmouse_attr_debug.dattr.attr,
|
||||
&psmouse_attr_paritycheck.dattr.attr,
|
||||
NULL
|
||||
};
|
||||
|
||||
static struct attribute_group elantech_attr_group = {
|
||||
.attrs = elantech_attrs,
|
||||
};
|
||||
|
||||
/*
|
||||
* Use magic knock to detect Elantech touchpad
|
||||
*/
|
||||
int elantech_detect(struct psmouse *psmouse, int set_properties)
|
||||
{
|
||||
struct ps2dev *ps2dev = &psmouse->ps2dev;
|
||||
unsigned char param[3];
|
||||
|
||||
ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
|
||||
|
||||
if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) ||
|
||||
ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
|
||||
ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
|
||||
ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) ||
|
||||
ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) {
|
||||
pr_err("elantech.c: sending Elantech magic knock failed.\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/*
|
||||
* Report this in case there are Elantech models that use a different
|
||||
* set of magic numbers
|
||||
*/
|
||||
if (param[0] != 0x3c || param[1] != 0x03 || param[2] != 0xc8) {
|
||||
pr_info("elantech.c: unexpected magic knock result 0x%02x, 0x%02x, 0x%02x.\n",
|
||||
param[0], param[1], param[2]);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (set_properties) {
|
||||
psmouse->vendor = "Elantech";
|
||||
psmouse->name = "Touchpad";
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Clean up sysfs entries when disconnecting
|
||||
*/
|
||||
static void elantech_disconnect(struct psmouse *psmouse)
|
||||
{
|
||||
sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj,
|
||||
&elantech_attr_group);
|
||||
kfree(psmouse->private);
|
||||
psmouse->private = NULL;
|
||||
}
|
||||
|
||||
/*
|
||||
* Put the touchpad back into absolute mode when reconnecting
|
||||
*/
|
||||
static int elantech_reconnect(struct psmouse *psmouse)
|
||||
{
|
||||
if (elantech_detect(psmouse, 0))
|
||||
return -1;
|
||||
|
||||
if (elantech_set_absolute_mode(psmouse)) {
|
||||
pr_err("elantech.c: failed to put touchpad back into absolute mode.\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Initialize the touchpad and create sysfs entries
|
||||
*/
|
||||
int elantech_init(struct psmouse *psmouse)
|
||||
{
|
||||
struct elantech_data *etd;
|
||||
int i, error;
|
||||
unsigned char param[3];
|
||||
|
||||
etd = kzalloc(sizeof(struct elantech_data), GFP_KERNEL);
|
||||
psmouse->private = etd;
|
||||
if (!etd)
|
||||
return -1;
|
||||
|
||||
etd->parity[0] = 1;
|
||||
for (i = 1; i < 256; i++)
|
||||
etd->parity[i] = etd->parity[i & (i - 1)] ^ 1;
|
||||
|
||||
/*
|
||||
* Find out what version hardware this is
|
||||
*/
|
||||
if (synaptics_send_cmd(psmouse, ETP_FW_VERSION_QUERY, param)) {
|
||||
pr_err("elantech.c: failed to query firmware version.\n");
|
||||
goto init_fail;
|
||||
}
|
||||
pr_info("elantech.c: Elantech version query result 0x%02x, 0x%02x, 0x%02x.\n",
|
||||
param[0], param[1], param[2]);
|
||||
etd->fw_version_maj = param[0];
|
||||
etd->fw_version_min = param[2];
|
||||
|
||||
/*
|
||||
* Assume every version greater than this is new EeePC style
|
||||
* hardware with 6 byte packets
|
||||
*/
|
||||
if (etd->fw_version_maj >= 0x02 && etd->fw_version_min >= 0x30) {
|
||||
etd->hw_version = 2;
|
||||
/* For now show extra debug information */
|
||||
etd->debug = 1;
|
||||
/* Don't know how to do parity checking for version 2 */
|
||||
etd->paritycheck = 0;
|
||||
} else {
|
||||
etd->hw_version = 1;
|
||||
etd->paritycheck = 1;
|
||||
}
|
||||
pr_info("elantech.c: assuming hardware version %d, firmware version %d.%d\n",
|
||||
etd->hw_version, etd->fw_version_maj, etd->fw_version_min);
|
||||
|
||||
if (synaptics_send_cmd(psmouse, ETP_CAPABILITIES_QUERY, param)) {
|
||||
pr_err("elantech.c: failed to query capabilities.\n");
|
||||
goto init_fail;
|
||||
}
|
||||
pr_info("elantech.c: Synaptics capabilities query result 0x%02x, 0x%02x, 0x%02x.\n",
|
||||
param[0], param[1], param[2]);
|
||||
etd->capabilities = param[0];
|
||||
|
||||
if (elantech_set_absolute_mode(psmouse)) {
|
||||
pr_err("elantech.c: failed to put touchpad into absolute mode.\n");
|
||||
goto init_fail;
|
||||
}
|
||||
|
||||
elantech_set_input_params(psmouse);
|
||||
|
||||
error = sysfs_create_group(&psmouse->ps2dev.serio->dev.kobj,
|
||||
&elantech_attr_group);
|
||||
if (error) {
|
||||
pr_err("elantech.c: failed to create sysfs attributes, error: %d.\n",
|
||||
error);
|
||||
goto init_fail;
|
||||
}
|
||||
|
||||
psmouse->protocol_handler = elantech_process_byte;
|
||||
psmouse->disconnect = elantech_disconnect;
|
||||
psmouse->reconnect = elantech_reconnect;
|
||||
psmouse->pktsize = etd->hw_version == 2 ? 6 : 4;
|
||||
|
||||
return 0;
|
||||
|
||||
init_fail:
|
||||
kfree(etd);
|
||||
return -1;
|
||||
}
|
||||
124
drivers/input/mouse/elantech.h
Normal file
124
drivers/input/mouse/elantech.h
Normal file
|
|
@ -0,0 +1,124 @@
|
|||
/*
|
||||
* Elantech Touchpad driver (v5)
|
||||
*
|
||||
* Copyright (C) 2007-2008 Arjan Opmeer <arjan@opmeer.net>
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#ifndef _ELANTECH_H
|
||||
#define _ELANTECH_H
|
||||
|
||||
/*
|
||||
* Command values for Synaptics style queries
|
||||
*/
|
||||
#define ETP_FW_VERSION_QUERY 0x01
|
||||
#define ETP_CAPABILITIES_QUERY 0x02
|
||||
|
||||
/*
|
||||
* Command values for register reading or writing
|
||||
*/
|
||||
#define ETP_REGISTER_READ 0x10
|
||||
#define ETP_REGISTER_WRITE 0x11
|
||||
|
||||
/*
|
||||
* Hardware version 2 custom PS/2 command value
|
||||
*/
|
||||
#define ETP_PS2_CUSTOM_COMMAND 0xf8
|
||||
|
||||
/*
|
||||
* Times to retry a ps2_command and millisecond delay between tries
|
||||
*/
|
||||
#define ETP_PS2_COMMAND_TRIES 3
|
||||
#define ETP_PS2_COMMAND_DELAY 500
|
||||
|
||||
/*
|
||||
* Times to try to read back a register and millisecond delay between tries
|
||||
*/
|
||||
#define ETP_READ_BACK_TRIES 5
|
||||
#define ETP_READ_BACK_DELAY 2000
|
||||
|
||||
/*
|
||||
* Register bitmasks for hardware version 1
|
||||
*/
|
||||
#define ETP_R10_ABSOLUTE_MODE 0x04
|
||||
#define ETP_R11_4_BYTE_MODE 0x02
|
||||
|
||||
/*
|
||||
* Capability bitmasks
|
||||
*/
|
||||
#define ETP_CAP_HAS_ROCKER 0x04
|
||||
|
||||
/*
|
||||
* One hard to find application note states that X axis range is 0 to 576
|
||||
* and Y axis range is 0 to 384 for harware version 1.
|
||||
* Edge fuzz might be necessary because of bezel around the touchpad
|
||||
*/
|
||||
#define ETP_EDGE_FUZZ_V1 32
|
||||
|
||||
#define ETP_XMIN_V1 ( 0 + ETP_EDGE_FUZZ_V1)
|
||||
#define ETP_XMAX_V1 (576 - ETP_EDGE_FUZZ_V1)
|
||||
#define ETP_YMIN_V1 ( 0 + ETP_EDGE_FUZZ_V1)
|
||||
#define ETP_YMAX_V1 (384 - ETP_EDGE_FUZZ_V1)
|
||||
|
||||
/*
|
||||
* It seems the resolution for hardware version 2 doubled.
|
||||
* Hence the X and Y ranges are doubled too.
|
||||
* The bezel around the pad also appears to be smaller
|
||||
*/
|
||||
#define ETP_EDGE_FUZZ_V2 8
|
||||
|
||||
#define ETP_XMIN_V2 ( 0 + ETP_EDGE_FUZZ_V2)
|
||||
#define ETP_XMAX_V2 (1152 - ETP_EDGE_FUZZ_V2)
|
||||
#define ETP_YMIN_V2 ( 0 + ETP_EDGE_FUZZ_V2)
|
||||
#define ETP_YMAX_V2 ( 768 - ETP_EDGE_FUZZ_V2)
|
||||
|
||||
/*
|
||||
* For two finger touches the coordinate of each finger gets reported
|
||||
* separately but with reduced resolution.
|
||||
*/
|
||||
#define ETP_2FT_FUZZ 4
|
||||
|
||||
#define ETP_2FT_XMIN ( 0 + ETP_2FT_FUZZ)
|
||||
#define ETP_2FT_XMAX (288 - ETP_2FT_FUZZ)
|
||||
#define ETP_2FT_YMIN ( 0 + ETP_2FT_FUZZ)
|
||||
#define ETP_2FT_YMAX (192 - ETP_2FT_FUZZ)
|
||||
|
||||
struct elantech_data {
|
||||
unsigned char reg_10;
|
||||
unsigned char reg_11;
|
||||
unsigned char reg_20;
|
||||
unsigned char reg_21;
|
||||
unsigned char reg_22;
|
||||
unsigned char reg_23;
|
||||
unsigned char reg_24;
|
||||
unsigned char reg_25;
|
||||
unsigned char reg_26;
|
||||
unsigned char debug;
|
||||
unsigned char capabilities;
|
||||
unsigned char fw_version_maj;
|
||||
unsigned char fw_version_min;
|
||||
unsigned char hw_version;
|
||||
unsigned char paritycheck;
|
||||
unsigned char parity[256];
|
||||
};
|
||||
|
||||
#ifdef CONFIG_MOUSE_PS2_ELANTECH
|
||||
int elantech_detect(struct psmouse *psmouse, int set_properties);
|
||||
int elantech_init(struct psmouse *psmouse);
|
||||
#else
|
||||
static inline int elantech_detect(struct psmouse *psmouse, int set_properties)
|
||||
{
|
||||
return -ENOSYS;
|
||||
}
|
||||
static inline int elantech_init(struct psmouse *psmouse)
|
||||
{
|
||||
return -ENOSYS;
|
||||
}
|
||||
#endif /* CONFIG_MOUSE_PS2_ELANTECH */
|
||||
|
||||
#endif
|
||||
|
|
@ -29,6 +29,7 @@
|
|||
#include "lifebook.h"
|
||||
#include "trackpoint.h"
|
||||
#include "touchkit_ps2.h"
|
||||
#include "elantech.h"
|
||||
|
||||
#define DRIVER_DESC "PS/2 mouse driver"
|
||||
|
||||
|
|
@ -650,6 +651,19 @@ static int psmouse_extensions(struct psmouse *psmouse,
|
|||
max_proto = PSMOUSE_IMEX;
|
||||
}
|
||||
|
||||
/*
|
||||
* Try Elantech touchpad.
|
||||
*/
|
||||
if (max_proto > PSMOUSE_IMEX &&
|
||||
elantech_detect(psmouse, set_properties) == 0) {
|
||||
if (!set_properties || elantech_init(psmouse) == 0)
|
||||
return PSMOUSE_ELANTECH;
|
||||
/*
|
||||
* Init failed, try basic relative protocols
|
||||
*/
|
||||
max_proto = PSMOUSE_IMEX;
|
||||
}
|
||||
|
||||
if (max_proto > PSMOUSE_IMEX) {
|
||||
if (genius_detect(psmouse, set_properties) == 0)
|
||||
return PSMOUSE_GENPS;
|
||||
|
|
@ -789,6 +803,15 @@ static const struct psmouse_protocol psmouse_protocols[] = {
|
|||
.detect = hgpk_detect,
|
||||
},
|
||||
#endif
|
||||
#ifdef CONFIG_MOUSE_PS2_ELANTECH
|
||||
{
|
||||
.type = PSMOUSE_ELANTECH,
|
||||
.name = "ETPS/2",
|
||||
.alias = "elantech",
|
||||
.detect = elantech_detect,
|
||||
.init = elantech_init,
|
||||
},
|
||||
#endif
|
||||
{
|
||||
.type = PSMOUSE_CORTRON,
|
||||
.name = "CortronPS/2",
|
||||
|
|
|
|||
|
|
@ -90,6 +90,7 @@ enum psmouse_type {
|
|||
PSMOUSE_TOUCHKIT_PS2,
|
||||
PSMOUSE_CORTRON,
|
||||
PSMOUSE_HGPK,
|
||||
PSMOUSE_ELANTECH,
|
||||
PSMOUSE_AUTO /* This one should always be last */
|
||||
};
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue