Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: psmouse - add support for Elantech touchpads Input: i8042 - add Blue FB5601 to noloop exception table
This commit is contained in:
Linus Torvalds
commit
3d6eadcb50
405
Documentation/input/elantech.txt
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405
Documentation/input/elantech.txt
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@ -0,0 +1,405 @@
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Elantech Touchpad Driver
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========================
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Copyright (C) 2007-2008 Arjan Opmeer <arjan@opmeer.net>
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Extra information for hardware version 1 found and
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provided by Steve Havelka
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Version 2 (EeePC) hardware support based on patches
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received from Woody at Xandros and forwarded to me
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by user StewieGriffin at the eeeuser.com forum
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Contents
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~~~~~~~~
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1. Introduction
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2. Extra knobs
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3. Hardware version 1
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3.1 Registers
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3.2 Native relative mode 4 byte packet format
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3.3 Native absolute mode 4 byte packet format
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4. Hardware version 2
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4.1 Registers
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4.2 Native absolute mode 6 byte packet format
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4.2.1 One finger touch
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4.2.2 Two finger touch
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1. Introduction
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~~~~~~~~~~~~
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Currently the Linux Elantech touchpad driver is aware of two different
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hardware versions unimaginatively called version 1 and version 2. Version 1
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is found in "older" laptops and uses 4 bytes per packet. Version 2 seems to
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be introduced with the EeePC and uses 6 bytes per packet.
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The driver tries to support both hardware versions and should be compatible
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with the Xorg Synaptics touchpad driver and its graphical configuration
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utilities.
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Additionally the operation of the touchpad can be altered by adjusting the
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contents of some of its internal registers. These registers are represented
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by the driver as sysfs entries under /sys/bus/serio/drivers/psmouse/serio?
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that can be read from and written to.
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Currently only the registers for hardware version 1 are somewhat understood.
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Hardware version 2 seems to use some of the same registers but it is not
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known whether the bits in the registers represent the same thing or might
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have changed their meaning.
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On top of that, some register settings have effect only when the touchpad is
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in relative mode and not in absolute mode. As the Linux Elantech touchpad
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driver always puts the hardware into absolute mode not all information
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mentioned below can be used immediately. But because there is no freely
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available Elantech documentation the information is provided here anyway for
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completeness sake.
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/////////////////////////////////////////////////////////////////////////////
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2. Extra knobs
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~~~~~~~~~~~
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Currently the Linux Elantech touchpad driver provides two extra knobs under
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/sys/bus/serio/drivers/psmouse/serio? for the user.
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* debug
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Turn different levels of debugging ON or OFF.
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By echoing "0" to this file all debugging will be turned OFF.
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Currently a value of "1" will turn on some basic debugging and a value of
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"2" will turn on packet debugging. For hardware version 1 the default is
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OFF. For version 2 the default is "1".
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Turning packet debugging on will make the driver dump every packet
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received to the syslog before processing it. Be warned that this can
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generate quite a lot of data!
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* paritycheck
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Turns parity checking ON or OFF.
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By echoing "0" to this file parity checking will be turned OFF. Any
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non-zero value will turn it ON. For hardware version 1 the default is ON.
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For version 2 the default it is OFF.
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Hardware version 1 provides basic data integrity verification by
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calculating a parity bit for the last 3 bytes of each packet. The driver
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can check these bits and reject any packet that appears corrupted. Using
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this knob you can bypass that check.
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It is not known yet whether hardware version 2 provides the same parity
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bits. Hence checking is disabled by default. Currently even turning it on
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will do nothing.
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/////////////////////////////////////////////////////////////////////////////
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3. Hardware version 1
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|
==================
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|
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3.1 Registers
|
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|
~~~~~~~~~
|
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|
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By echoing a hexadecimal value to a register it contents can be altered.
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For example:
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echo -n 0x16 > reg_10
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* reg_10
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bit 7 6 5 4 3 2 1 0
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B C T D L A S E
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E: 1 = enable smart edges unconditionally
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S: 1 = enable smart edges only when dragging
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A: 1 = absolute mode (needs 4 byte packets, see reg_11)
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L: 1 = enable drag lock (see reg_22)
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D: 1 = disable dynamic resolution
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T: 1 = disable tapping
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C: 1 = enable corner tap
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B: 1 = swap left and right button
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* reg_11
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bit 7 6 5 4 3 2 1 0
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1 0 0 H V 1 F P
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P: 1 = enable parity checking for relative mode
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F: 1 = enable native 4 byte packet mode
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V: 1 = enable vertical scroll area
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H: 1 = enable horizontal scroll area
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* reg_20
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single finger width?
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* reg_21
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scroll area width (small: 0x40 ... wide: 0xff)
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* reg_22
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drag lock time out (short: 0x14 ... long: 0xfe;
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0xff = tap again to release)
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* reg_23
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tap make timeout?
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* reg_24
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tap release timeout?
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* reg_25
|
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smart edge cursor speed (0x02 = slow, 0x03 = medium, 0x04 = fast)
|
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* reg_26
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smart edge activation area width?
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3.2 Native relative mode 4 byte packet format
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|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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byte 0:
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bit 7 6 5 4 3 2 1 0
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c c p2 p1 1 M R L
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L, R, M = 1 when Left, Right, Middle mouse button pressed
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some models have M as byte 3 odd parity bit
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when parity checking is enabled (reg_11, P = 1):
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p1..p2 = byte 1 and 2 odd parity bit
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c = 1 when corner tap detected
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byte 1:
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bit 7 6 5 4 3 2 1 0
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dx7 dx6 dx5 dx4 dx3 dx2 dx1 dx0
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dx7..dx0 = x movement; positive = right, negative = left
|
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byte 1 = 0xf0 when corner tap detected
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byte 2:
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bit 7 6 5 4 3 2 1 0
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dy7 dy6 dy5 dy4 dy3 dy2 dy1 dy0
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dy7..dy0 = y movement; positive = up, negative = down
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byte 3:
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parity checking enabled (reg_11, P = 1):
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bit 7 6 5 4 3 2 1 0
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w h n1 n0 ds3 ds2 ds1 ds0
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normally:
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ds3..ds0 = scroll wheel amount and direction
|
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positive = down or left
|
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negative = up or right
|
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when corner tap detected:
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ds0 = 1 when top right corner tapped
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ds1 = 1 when bottom right corner tapped
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ds2 = 1 when bottom left corner tapped
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ds3 = 1 when top left corner tapped
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n1..n0 = number of fingers on touchpad
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only models with firmware 2.x report this, models with
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firmware 1.x seem to map one, two and three finger taps
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directly to L, M and R mouse buttons
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h = 1 when horizontal scroll action
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|
w = 1 when wide finger touch?
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|
otherwise (reg_11, P = 0):
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bit 7 6 5 4 3 2 1 0
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ds7 ds6 ds5 ds4 ds3 ds2 ds1 ds0
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ds7..ds0 = vertical scroll amount and direction
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negative = up
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positive = down
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3.3 Native absolute mode 4 byte packet format
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|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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|
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|
byte 0:
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|
firmware version 1.x:
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bit 7 6 5 4 3 2 1 0
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D U p1 p2 1 p3 R L
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L, R = 1 when Left, Right mouse button pressed
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p1..p3 = byte 1..3 odd parity bit
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D, U = 1 when rocker switch pressed Up, Down
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firmware version 2.x:
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bit 7 6 5 4 3 2 1 0
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n1 n0 p2 p1 1 p3 R L
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|
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L, R = 1 when Left, Right mouse button pressed
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p1..p3 = byte 1..3 odd parity bit
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|
n1..n0 = number of fingers on touchpad
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|
|
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byte 1:
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|
firmware version 1.x:
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|
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|
bit 7 6 5 4 3 2 1 0
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|
f 0 th tw x9 x8 y9 y8
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|
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tw = 1 when two finger touch
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|
th = 1 when three finger touch
|
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|
f = 1 when finger touch
|
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|
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|
firmware version 2.x:
|
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|
|
||||||
|
bit 7 6 5 4 3 2 1 0
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|
. . . . x9 x8 y9 y8
|
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|
|
||||||
|
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
|
mice with wheels and extra buttons, Microsoft, Logitech or Genius
|
||||||
compatible.
|
compatible.
|
||||||
|
|
||||||
Synaptics TouchPad users might be interested in a specialized
|
Synaptics, ALPS or Elantech TouchPad users might be interested
|
||||||
XFree86 driver at:
|
in a specialized Xorg/XFree86 driver at:
|
||||||
<http://w1.894.telia.com/~u89404340/touchpad/index.html>
|
<http://w1.894.telia.com/~u89404340/touchpad/index.html>
|
||||||
and a new version of GPM at:
|
and a new version of GPM at:
|
||||||
<http://www.geocities.com/dt_or/gpm/gpm.html>
|
<http://www.geocities.com/dt_or/gpm/gpm.html>
|
||||||
@ -87,6 +87,27 @@ config MOUSE_PS2_TRACKPOINT
|
|||||||
|
|
||||||
If unsure, say Y.
|
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
|
config MOUSE_PS2_TOUCHKIT
|
||||||
bool "eGalax TouchKit PS/2 protocol extension"
|
bool "eGalax TouchKit PS/2 protocol extension"
|
||||||
depends on MOUSE_PS2
|
depends on MOUSE_PS2
|
||||||
|
|||||||
@ -21,6 +21,7 @@ obj-$(CONFIG_MOUSE_GPIO) += gpio_mouse.o
|
|||||||
psmouse-objs := psmouse-base.o synaptics.o
|
psmouse-objs := psmouse-base.o synaptics.o
|
||||||
|
|
||||||
psmouse-$(CONFIG_MOUSE_PS2_ALPS) += alps.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_OLPC) += hgpk.o
|
||||||
psmouse-$(CONFIG_MOUSE_PS2_LOGIPS2PP) += logips2pp.o
|
psmouse-$(CONFIG_MOUSE_PS2_LOGIPS2PP) += logips2pp.o
|
||||||
psmouse-$(CONFIG_MOUSE_PS2_LIFEBOOK) += lifebook.o
|
psmouse-$(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 "lifebook.h"
|
||||||
#include "trackpoint.h"
|
#include "trackpoint.h"
|
||||||
#include "touchkit_ps2.h"
|
#include "touchkit_ps2.h"
|
||||||
|
#include "elantech.h"
|
||||||
|
|
||||||
#define DRIVER_DESC "PS/2 mouse driver"
|
#define DRIVER_DESC "PS/2 mouse driver"
|
||||||
|
|
||||||
@ -650,6 +651,19 @@ static int psmouse_extensions(struct psmouse *psmouse,
|
|||||||
max_proto = PSMOUSE_IMEX;
|
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 (max_proto > PSMOUSE_IMEX) {
|
||||||
if (genius_detect(psmouse, set_properties) == 0)
|
if (genius_detect(psmouse, set_properties) == 0)
|
||||||
return PSMOUSE_GENPS;
|
return PSMOUSE_GENPS;
|
||||||
@ -789,6 +803,15 @@ static const struct psmouse_protocol psmouse_protocols[] = {
|
|||||||
.detect = hgpk_detect,
|
.detect = hgpk_detect,
|
||||||
},
|
},
|
||||||
#endif
|
#endif
|
||||||
|
#ifdef CONFIG_MOUSE_PS2_ELANTECH
|
||||||
|
{
|
||||||
|
.type = PSMOUSE_ELANTECH,
|
||||||
|
.name = "ETPS/2",
|
||||||
|
.alias = "elantech",
|
||||||
|
.detect = elantech_detect,
|
||||||
|
.init = elantech_init,
|
||||||
|
},
|
||||||
|
#endif
|
||||||
{
|
{
|
||||||
.type = PSMOUSE_CORTRON,
|
.type = PSMOUSE_CORTRON,
|
||||||
.name = "CortronPS/2",
|
.name = "CortronPS/2",
|
||||||
|
|||||||
@ -90,6 +90,7 @@ enum psmouse_type {
|
|||||||
PSMOUSE_TOUCHKIT_PS2,
|
PSMOUSE_TOUCHKIT_PS2,
|
||||||
PSMOUSE_CORTRON,
|
PSMOUSE_CORTRON,
|
||||||
PSMOUSE_HGPK,
|
PSMOUSE_HGPK,
|
||||||
|
PSMOUSE_ELANTECH,
|
||||||
PSMOUSE_AUTO /* This one should always be last */
|
PSMOUSE_AUTO /* This one should always be last */
|
||||||
};
|
};
|
||||||
|
|
||||||
|
|||||||
@ -135,6 +135,14 @@ static struct dmi_system_id __initdata i8042_dmi_noloop_table[] = {
|
|||||||
DMI_MATCH(DMI_PRODUCT_VERSION, "5a"),
|
DMI_MATCH(DMI_PRODUCT_VERSION, "5a"),
|
||||||
},
|
},
|
||||||
},
|
},
|
||||||
|
{
|
||||||
|
.ident = "Blue FB5601",
|
||||||
|
.matches = {
|
||||||
|
DMI_MATCH(DMI_SYS_VENDOR, "blue"),
|
||||||
|
DMI_MATCH(DMI_PRODUCT_NAME, "FB5601"),
|
||||||
|
DMI_MATCH(DMI_PRODUCT_VERSION, "M606"),
|
||||||
|
},
|
||||||
|
},
|
||||||
{ }
|
{ }
|
||||||
};
|
};
|
||||||
|
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user