cyapa(4), driver for the Cypress APA I2C trackpad
Differential Revision: https://reviews.freebsd.org/D3068 Reviewed by: kib, wblock Approved by: kib Relnotes: yes
This commit is contained in:
Michael Gmelin
parent
371583f6ca
commit
46f07718f7
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=285876
@ -107,6 +107,7 @@ MAN= aac.4 \
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cxgb.4 \
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cxgbe.4 \
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cy.4 \
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cyapa.4 \
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da.4 \
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dc.4 \
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dcons.4 \
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200
share/man/man4/cyapa.4
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200
share/man/man4/cyapa.4
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@ -0,0 +1,200 @@
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.\" Copyright (c) 2015 Michael Gmelin <freebsd@grem.de>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd July 25, 2015
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.Dt CYAPA 4
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.Os
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.Sh NAME
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.Nm cyapa
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.Nd Cypress APA trackpad with I2C interface driver
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.Sh SYNOPSIS
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To compile this driver into the kernel, place the following lines into
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the kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "device cyapa"
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.Cd "device ig4"
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.Cd "device smbus"
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.Ed
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.Pp
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Alternatively, to load the driver as a module at boot time, place the following line in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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cyapa_load="YES"
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ig4_load="YES"
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.Ed
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for the Cypress APA trackpad.
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It emulates the IntelliMouse PS/2 protocol.
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It supports basic mouse ioctls, so that
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.Xr moused 8
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is supported properly.
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.Ss Trackpad layout
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.Bd -literal
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2/3 1/3
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+--------------------+------------+
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| | Middle |
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| | Button |
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| Left | |
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| Button +------------+
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| | Right |
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| | Button |
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+--------------------+............|
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| Thumb/Button Area | 15%
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+---------------------------------+
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.Ed
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.Ss Trackpad features
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.Bl -tag -width 8n
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.It Va Two finger scrolling
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Use two fingers for Z axis scrolling.
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.It Va Button down/second finger
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While one finger clicks and holds down the touchpad, the second finger can be
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used to move the mouse cursor.
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This can be useful for drawing or selecting text.
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.It Va Thumb/Button area
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The lower 15% of the trackpad will not affect the mouse cursor position.
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This allows for high precision clicking, by controlling the cursor with the
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index finger and pushing/holding the pad down with the thumb.
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.It Va Trackpad button
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Push physical button.
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The left two thirds of the pad issues a LEFT button event.
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The upper right corner issues a MIDDLE button event.
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The lower right corner issues a RIGHT button.
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Optionally, tap to click can be enabled (see below).
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.El
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.Sh SYSCTL VARIABLES
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These
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.Xr sysctl 8
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variables are available:
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.Bl -tag -width 8n
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.It Va debug.cyapa_idle_freq
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Scan frequency in idle mode, the default is 1.
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.It Va debug.cyapa_slow_freq
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Scan frequency in slow mode, the default is 20.
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.It Va debug.cyapa_norm_freq
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Scan frequency in normal mode, the default is 100.
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.It Va debug.cyapa_minpressure
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Minimum pressure to detect a finger, the default is 12.
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.It Va debug.cyapa_enable_tapclick
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Controls tap to click.
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Possible values:
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.Bl -tag -width 8n
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.It 0
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Tap to click is disabled.
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This is the default value.
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.It 1
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Tap to click always generates a left mouse button event.
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.It 2
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Tap to click generates left mouse button event if the left 2/3rds of the pad
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are tapped and a right mouse button event otherwise.
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.It 3
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Tap to click generates mouse button events as if the physical button was
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pressed (see
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.Sx DESCRIPTION
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above).
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.El
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.It Va debug.cyapa_tapclick_min_ticks
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Minimum tap duration in ticks to create a click, the default is 1.
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.It Va debug.cyapa_tapclick_max_ticks
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Maximum tap duration in ticks to create a click, the default is 8.
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.It Va debug.cyapa_move_min_ticks
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Minimum ticks before cursor movement occurs, the default is 4.
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.It Va debug.cyapa_scroll_wait_ticks
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Ticks to wait before starting to scroll, the default is 0.
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.It Va debug.cyapa_scroll_stick_ticks
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Ticks while preventing cursor movement on single finger after scroll,
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the default is 15.
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.It Va debug.cyapa_thumbarea_percent
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Size of bottom thumb area in percent, the default is 15.
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.It Va debug.cyapa_debug
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Setting this to a non-zero value enables debug output to console and syslog,
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the default is 0.
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.It Va debug.cyapa_reset
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Setting this to a non-zero value reinitializes the device.
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The sysctl resets to zero immediately.
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.El
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.Sh FILES
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.Nm
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creates
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.Pa /dev/cyapa0 ,
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which presents the mouse as an
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.Ar IntelliMouse PS/2
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device.
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It supports
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.Xr moused 8
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levels 0 through 2, level 1 is used by default.
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.Sh EXAMPLES
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To use
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.Nm
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with
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.Xr moused 8 ,
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add the following lines to the
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.Xr rc.conf 5
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file:
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.Pp
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.Dl moused_enable="YES"
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.Dl moused_port="/dev/cyapa0"
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.Pp
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If vertical scrolling is not desired, add
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.Pp
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.Dl moused_flags="-l0"
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.Pp
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to
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.Xr rc.conf 5 .
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.Pp
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Enable tap to click for the left and the right mouse button and
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disable the thumb area by adding these lines to the
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.Xr sysctl.conf 5
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file:
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.Pp
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.Dl debug.cyapa_thumbarea_percent=0
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.Dl debug.cyapa_enable_tapclick=2
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.Sh SEE ALSO
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.Xr ig4 4 ,
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.Xr moused 4 ,
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.Xr smbus 4 ,
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.Xr sysmouse 4
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.Sh AUTHORS
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.An -nosplit
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The original
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.Nm
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driver was written for DragonFly BSD by
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.An Matthew Dillon .
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.Pp
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It has been ported, modified, and enhanced for
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.Fx
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by
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.An Michael Gmelin Aq Mt freebsd@grem.de .
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.Pp
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This manual page was written by
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.An Michael Gmelin Aq Mt freebsd@grem.de .
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.Sh BUGS
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The
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.Nm
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driver detects the device based on its I2C address (0x67).
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This might have unforeseen consequences if the initialization sequence
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is sent to an unknown device at that address.
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1707
sys/dev/cyapa/cyapa.c
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1707
sys/dev/cyapa/cyapa.c
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File diff suppressed because it is too large
Load Diff
124
sys/dev/cyapa/cyapa.h
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124
sys/dev/cyapa/cyapa.h
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@ -0,0 +1,124 @@
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/*
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* Copyright (c) 2014 The DragonFly Project. All rights reserved.
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*
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* This code is derived from software contributed to The DragonFly Project
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* by Matthew Dillon <dillon@backplane.com> and was subsequently ported
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* to FreeBSD by Michael Gmelin <freebsd@grem.de>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name of The DragonFly Project nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific, prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SYS_DEV_SMBUS_CYAPA_CYAPA_H_
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#define _SYS_DEV_SMBUS_CYAPA_CYAPA_H_
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#define CYAPA_MAX_MT 5
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/*
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* Boot-time registers. This is the device map
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* if (stat & CYAPA_STAT_RUNNING) is 0.
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*/
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struct cyapa_boot_regs {
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uint8_t stat; /* CYAPA_STAT_xxx */
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uint8_t boot; /* CYAPA_BOOT_xxx */
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uint8_t error;
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} __packed;
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#define CYAPA_BOOT_BUSY 0x80
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#define CYAPA_BOOT_RUNNING 0x10
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#define CYAPA_BOOT_DATA_VALID 0x08
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#define CYAPA_BOOT_CSUM_VALID 0x01
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#define CYAPA_ERROR_INVALID 0x80
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#define CYAPA_ERROR_INVALID_KEY 0x40
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#define CYAPA_ERROR_BOOTLOADER 0x20
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#define CYAPA_ERROR_CMD_CSUM 0x10
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#define CYAPA_ERROR_FLASH_PROT 0x08
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#define CYAPA_ERROR_FLASH_CSUM 0x04
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struct cyapa_regs {
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uint8_t stat;
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uint8_t fngr;
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struct {
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uint8_t xy_high; /* 7:4 high 4 bits of x */
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uint8_t x_low; /* 3:0 high 4 bits of y */
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uint8_t y_low;
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uint8_t pressure;
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uint8_t id; /* 1-15 incremented each touch */
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} touch[CYAPA_MAX_MT];
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} __packed;
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struct cyapa_cap {
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uint8_t prod_ida[5]; /* 0x00 - 0x04 */
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uint8_t prod_idb[6]; /* 0x05 - 0x0A */
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uint8_t prod_idc[2]; /* 0x0B - 0x0C */
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uint8_t reserved[6]; /* 0x0D - 0x12 */
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uint8_t buttons; /* 0x13 */
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uint8_t gen; /* 0x14, low 4 bits */
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uint8_t max_abs_xy_high;/* 0x15 7:4 high x bits, 3:0 high y bits */
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uint8_t max_abs_x_low; /* 0x16 */
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uint8_t max_abs_y_low; /* 0x17 */
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uint8_t phy_siz_xy_high;/* 0x18 7:4 high x bits, 3:0 high y bits */
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uint8_t phy_siz_x_low; /* 0x19 */
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uint8_t phy_siz_y_low; /* 0x1A */
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} __packed;
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#define CYAPA_STAT_RUNNING 0x80
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#define CYAPA_STAT_PWR_MASK 0x0C
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#define CYAPA_PWR_OFF 0x00
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#define CYAPA_PWR_IDLE 0x08
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#define CYAPA_PWR_ACTIVE 0x0C
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#define CYAPA_STAT_DEV_MASK 0x03
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#define CYAPA_DEV_NORMAL 0x03
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#define CYAPA_DEV_BUSY 0x01
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#define CYAPA_FNGR_DATA_VALID 0x08
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#define CYAPA_FNGR_MIDDLE 0x04
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#define CYAPA_FNGR_RIGHT 0x02
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#define CYAPA_FNGR_LEFT 0x01
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#define CYAPA_FNGR_NUMFINGERS(c) (((c) >> 4) & 0x0F)
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#define CYAPA_TOUCH_X(regs, i) ((((regs)->touch[i].xy_high << 4) & 0x0F00) | \
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(regs)->touch[i].x_low)
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#define CYAPA_TOUCH_Y(regs, i) ((((regs)->touch[i].xy_high << 8) & 0x0F00) | \
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(regs)->touch[i].y_low)
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#define CYAPA_TOUCH_P(regs, i) ((regs)->touch[i].pressure)
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#define CMD_BOOT_STATUS 0x00 /* only if in boot state */
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#define CMD_DEV_STATUS 0x00 /* only if in operational state */
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#define CMD_SOFT_RESET 0x28
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#define CMD_POWER_MODE 0x29
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#define CMD_POWER_MODE_OFF 0x00
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#define CMD_POWER_MODE_IDLE 0x14
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#define CMD_POWER_MODE_FULL 0xFC
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#define CMD_QUERY_CAPABILITIES 0x2A
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#endif
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@ -1,6 +1,6 @@
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# $FreeBSD$
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SUBDIR =
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SUBDIR += controllers if_ic smbus iicbus iicbb iicsmb iic smb
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SUBDIR += controllers if_ic smbus iicbus iicbb iicsmb iic cyapa smb
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.include <bsd.subdir.mk>
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7
sys/modules/i2c/cyapa/Makefile
Normal file
7
sys/modules/i2c/cyapa/Makefile
Normal file
@ -0,0 +1,7 @@
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# $FreeBSD$
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.PATH: ${.CURDIR}/../../../dev/cyapa
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KMOD = cyapa
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SRCS = cyapa.c device_if.h bus_if.h smbus_if.h vnode_if.h
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.include <bsd.kmod.mk>
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