Make the avarage-samples property a general touchscreen property
rather than imx6ul device specific.
Signed-off-by: Guy Shapiro <guy.shapiro@mobi-wize.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The i.MX6UL internal touchscreen controller contains an option to
average upon samples. This feature reduces noise from the produced
touch locations.
This patch adds sample averaging support to the imx6ul_tsc device
driver.
Signed-off-by: Guy Shapiro <guy.shapiro@mobi-wize.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
On some tablets the touchscreen controller is powered by separate
regulators, add support for this.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Merge tag 'v4.8' into next
Sync up with mainline to bring in I2C host notify changes and other
updates.
This adds a driver for the Elan eKTF2127 touchscreen controller,
which speaks an i2c protocol which is distinctly different from
the already supported eKTH controllers.
Signed-off-by: Michel Verlaan <michel.verl@gmail.com>
Signed-off-by: Siebren Vroegindeweij <siebren.vroegindeweij@hotmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Pull input updates from Dmitry Torokhov:
"Just a fix up for the firmware handling to the Silead driver (which is
a new driver in this release)"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: silead_gsl1680 - use "silead/" prefix for firmware loading
Input: silead_gsl1680 - document firmware-name, fix implementation
The driver has supported touchscreen-fw-name to specify the firmware to
load since it has been merged, but this was omitted from the dt-binding
documentation.
During review of adding touchscreen-fw-name to the binding documentation
it was brought up that there is a standard property name called
"firmware-name" for this, which should be used.
Since there are no users of touchscreen-fw-name yet, this commit
adds documentation of "firmware-name" to the dt-binding documentation
and switches the driver over to use this.
This commit also makes the driver add a "silead/" prefix to the
firmware name from dt before calling request_firmware. That the
firmware files are stored under /lib/firmware/silead under Linux
is an implementation detail and does not belong in devicetree.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The new(ish) ft6236 simply re-implements the M09 protocol of the
(much) older edt-ft5x06.c driver.
This commit removes this duplicate driver and adds the i2c ids and
dt compatible string to the edt-ft5x06.c driver to keep compatibility.
This commit also adds the standard touchscreen properties as optional
properties to the edt,ft5x06 binding, these were documented in the
focaltech,ft6236 bindingi, but were missing from the edt,ft5x06 doc.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Pull more input updates from Dmitry Torokhov:
"Two new drivers for touchscreen controllers:
- Silead touchscreen controllers
- SiS 9200 family touchscreen controllers
and a few driver fixes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: silead - remove some dead code
Input: sis-i2c - select CONFIG_CRC_ITU_T
Input: add driver for SiS 9200 family I2C touchscreen controllers
Input: ili210x - fix permissions on "calibrate" attribute
Input: elan_i2c - properly wake up touchpad on ASUS laptops
Input: add driver for Silead touchscreens
Input: elantech - fix debug dump of the current packet
Input: rotary_encoder - support binary encoding of states
Input: xpad - power off wireless 360 controllers on suspend
Input: i8042 - break load dependency between atkbd/psmouse and i8042
Input: synaptics-rmi4 - do not check for NULL when calling of_node_put()
Input: cros_ec_keyb - cleanup use of dev
This is a driver for SiS 9200 family touchscreen controllers using I2C bus.
Signed-off-by: Mika Penttilä <mika.penttila@nextfour.com>
Acked-by: Tammy Tseng <tammy_tseng@sis.com>
Acked-by: Yuger Yu <yuger_yu@sis.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This driver adds support for Silead touchscreens. It has been tested
with GSL1680 and GSL3680 touch panels.
It supports ACPI and device tree enumeration. Screen resolution,
the maximum number of fingers supported and firmware name are
configurable.
Signed-off-by: Robert Dolca <robert.dolca@intel.com>
Signed-off-by: Daniel Jansen <djaniboe@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
- Rewrite of the unflattening code to avoid recursion and lessen the
stack usage.
- Rewrite of the phandle args parsing code to get rid of the fixed args
size. This is needed for IOMMU code.
- Sync to latest dtc which adds more dts style checking. These warnings
are enabled with "W=1" compiles.
- Tegra documentation updates related to the above warnings.
- A bunch of spelling and other doc fixes.
- Various vendor prefix additions.
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Merge tag 'devicetree-for-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree updates from Rob Herring:
- Rewrite of the unflattening code to avoid recursion and lessen the
stack usage.
- Rewrite of the phandle args parsing code to get rid of the fixed args
size. This is needed for IOMMU code.
- Sync to latest dtc which adds more dts style checking. These
warnings are enabled with "W=1" compiles.
- Tegra documentation updates related to the above warnings.
- A bunch of spelling and other doc fixes.
- Various vendor prefix additions.
* tag 'devicetree-for-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (52 commits)
devicetree: Add Creative Technology vendor id
gpio: dt-bindings: add ibm,ppc4xx-gpio binding
of/unittest: Remove unnecessary module.h header inclusion
drivers/of: Fix build warning in populate_node()
drivers/of: Fix depth when unflattening devicetree
of: dynamic: changeset prop-update revert fix
drivers/of: Export of_detach_node()
drivers/of: Return allocated memory from of_fdt_unflatten_tree()
drivers/of: Specify parent node in of_fdt_unflatten_tree()
drivers/of: Rename unflatten_dt_node()
drivers/of: Avoid recursively calling unflatten_dt_node()
drivers/of: Split unflatten_dt_node()
of: include errno.h in of_graph.h
of: document refcount incrementation of of_get_cpu_node()
Documentation: dt: soc: fix spelling mistakes
Documentation: dt: power: fix spelling mistake
Documentation: dt: pinctrl: fix spelling mistake
Documentation: dt: opp: fix spelling mistake
Documentation: dt: net: fix spelling mistakes
Documentation: dt: mtd: fix spelling mistake
...
In Cygnus SOC touch screen controller registers are shared with ADC and
flex timer. Using readl/writel could lead to race condition. So touch
screen driver is enhanced to support register access using syscon framework
API's to take care of mutually exclusive access.
Signed-off-by: Raveendra Padasalagi <raveendra.padasalagi@broadcom.com>
Reviewed-by: Ray Jui <ray.jui@broadcom.com>
Reviewed-by: Scott Branden <scott.branden@broadcom.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
- Freescale Touch Screen ADC
- X-Powers AXP PMIC with RSB
- TI TPS65086 Power Management IC (PMIC)
- New Device Support
- Supply device PCI IDs for Intel Broxton
- Fix-ups
- Move to clkdev_create() API; intel_quark_i2c_gpio
- Complete re-write of TI's TPS65912 Power Management IC (PMIC)
- Remove unnecessary function argument; axp20x
- Separate out bus related code; axp20x
- Coding Style changes; axp20x
- Allow more drivers to be compiled as modules
- Work around false positive 'used uninitialised' warning; db8500-prcmu
- Bug Fixes
- Remove do_div(); fsl-imx25-gcq
- Fix driver init when built-in; tps65010
- Fix clock-unregister leak; intel-lpss
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Merge tag 'mfd-for-linus-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD updates from Lee Jones:
"New Drivers:
- Freescale Touch Screen ADC
- X-Powers AXP PMIC with RSB
- TI TPS65086 Power Management IC (PMIC)
New Device Support:
- Supply device PCI IDs for Intel Broxton
Fix-ups:
- Move to clkdev_create() API; intel_quark_i2c_gpio
- Complete re-write of TI's TPS65912 Power Management IC (PMIC)
- Remove unnecessary function argument; axp20x
- Separate out bus related code; axp20x
- Coding Style changes; axp20x
- Allow more drivers to be compiled as modules
- Work around false positive 'used uninitialised' warning; db8500-prcmu
Bug Fixes:
- Remove do_div(); fsl-imx25-gcq
- Fix driver init when built-in; tps65010
- Fix clock-unregister leak; intel-lpss"
* tag 'mfd-for-linus-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (53 commits)
mfd: intel-lpss: Pass I2C configuration via properties on BXT
mfd: imx6sx: Add PCIe register definitions for iomuxc gpr
mfd: ipaq-micro: Use __maybe_unused to hide pm functions
mfd: max77686: Add max77802 to I2C device ID table
mfd: max77686: Export OF module alias information
mfd: max77686: Allow driver to be built as a module
mfd: stmpe: Add the proper PWM resources
mfd: tps65090: Set regmap config reg counts properly
mfd: syscon: Return ENOTSUPP instead of ENOSYS when disabled
mfd: as3711: Set regmap config reg counts properly
mfd: rc5t583: Set regmap config reg counts properly
gpio: tps65086: Add GPO driver for the TPS65086 PMIC
mfd: mt6397: Add platform device ID table
mfd: da9063: Fix missing volatile registers in the core regmap_range volatile lists
mfd: mt6397: Add MT6323 support to MT6397 driver
mfd: mt6397: Add support for different Slave types
mfd: mt6397: int_con and int_status may vary in location
dt-bindings: mfd: Add bindings for the MediaTek MT6323 PMIC
mfd: da9062: Fix missing volatile registers in the core regmap_range volatile lists
mfd: Add documentation for ACT8945A DT bindings
...
2D sensors have several parameter which can be set in the platform data.
This patch adds support for getting those values from devicetree.
Signed-off-by: Andrew Duggan <aduggan@synaptics.com>
Tested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Add device tree support for the I2C and SPI variant of AD7879(-1).
This allows to specify the touchscreen controller as a I2C client
node or SPI slave device. Most of the options available in platform
data are also available as device tree properties, the only exception
being GPIO capabilities, which can not be activated through device
tree currently.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This is the touchscreen conversion queue binding documentation. It uses
the shared imx25 ADC.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Drop support for platform data passed via a C-structure and switch to
device properties instead, which should make the driver compatible
with all platforms: OF, ACPI and static boards. Static boards should
use property sets to communicate device parameters to the driver.
Signed-off-by: Oreste Salerno <oreste.salerno@tomtom.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Implement support for the following device-tree and ACPI 5.1 DSD
properties in the goodix touchscreen driver:
- touchscreen-inverted-x: X axis is inverted (boolean)
- touchscreen-inverted-y: Y axis is inverted (boolean)
- touchscreen-swapped-x-y: X and Y axis are swapped (boolean)
These are necessary on tablets which have a display in portrait
format while the touchscreen is in landscape format, such as e.g.
the MSI Primo 81.
Signed-off-by: Karsten Merker <merker@debian.org>
Tested-by: Bastien Nocera <hadess@hadess.net>
Tested-by: Irina Tirdea <irina.tirdea@intel.com> (with ACPI DSD properties)
Tested-by: Aleksei Mamlin <mamlinav@gmail.com> (with device-tree properties)
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
After power on, it is recommended that the driver resets the device.
The reset procedure timing is described in the datasheet and is used
at device init (before writing device configuration) and
for power management. It is a sequence of setting the interrupt
and reset pins high/low at specific timing intervals. This procedure
also includes setting the slave address to the one specified in the
ACPI/device tree.
This is based on Goodix datasheets for GT911 and GT9271 and on Goodix
driver gt9xx.c for Android (publicly available in Android kernel
trees for various devices).
For reset the driver needs to control the interrupt and
reset gpio pins (configured through ACPI/device tree). For devices
that do not have the gpio pins properly declared, the functionality
depending on these pins will not be available, but the device can still
be used with basic functionality.
For both device tree and ACPI, the interrupt gpio pin configuration is
read from the "irq-gpios" property and the reset pin configuration is
read from the "reset-gpios" property. For ACPI 5.1, named properties
can be specified using the _DSD section. This functionality will not be
available for devices that use indexed gpio pins declared in the _CRS
section (we need to provide backward compatibility with devices
that do not support using the interrupt gpio pin as output).
For ACPI, the pins can be specified using ACPI 5.1:
Device (STAC)
{
Name (_HID, "GDIX1001")
...
Method (_CRS, 0, Serialized)
{
Name (RBUF, ResourceTemplate ()
{
I2cSerialBus (0x0014, ControllerInitiated, 0x00061A80,
AddressingMode7Bit, "\\I2C0",
0x00, ResourceConsumer, ,
)
GpioInt (Edge, ActiveHigh, Exclusive, PullNone, 0x0000,
"\\I2C0", 0x00, ResourceConsumer, ,
)
{ // Pin list
0
}
GpioIo (Exclusive, PullDown, 0x0000, 0x0000,
IoRestrictionOutputOnly, "\\I2C0", 0x00,
ResourceConsumer, ,
)
{
1
}
})
Return (RBUF)
}
Name (_DSD, Package ()
{
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package ()
{
Package (2) {"irq-gpios", Package() {^STAC, 0, 0, 0 }},
Package (2) {"reset-gpios", Package() {^STAC, 1, 0, 0 }},
...
}
}
Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Bastien Nocera <hadess@hadess.net>
Tested-by: Bastien Nocera <hadess@hadess.net>
Tested-by: Aleksei Mamlin <mamlinav@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
On this board, the touchscreen, an ads7843, is not handled directly by
Linux but by a companion FPGA. This FPGA is memory-mapped and the IP
design is very similar to the mk712.
This commit adds the support for this IP.
Signed-off-by: Damien Riegel <damien.riegel@savoirfairelinux.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
On some devices the wake and enable pins of the pixcir touchscreen
controller are connected to gpios and these must be controlled by the
driver for the device to operate properly.
Signed-off-by: Sander Vermin <sander@vermin.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This adds support for the i2c based tsc2004 touchscreen controller.
Signed-off-by: Michael Welling <mwelling@ieee.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
FT5506 is essentially the same as other FT5x06 devices other than
supporting 10 support points.
Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This adds support for the FT6x06 and the FT6x36 family of capacitive touch
panel controllers, in particular the FT6236.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Instead of hardcoding IRQ trigger type to IRQF_TRIGGER_FALLING, let's
respect settings specified in device tree. To be compatible with older
DTSes, if trigger type is not set up in DTS we'll set it to default
(falling edge).
Tested-by: Franklin S Cooper Jr <fcooper@ti.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The current/old gpio framework used doesn't properly listen to
ACTIVE_LOW and ACTIVE_HIGH flags. The newer gpio framework takes into
account these flags when setting gpio values.
Since the values being output were based on voltage and not logic they
change to reflect this difference. Also use gpiod_set_value_cansleep since
wake and reset pins can be provided by bus based io expanders.
Switch from msleep(5) to udelay_range(5000,6000) to avoid check patch
warning.
Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Freescale i.MX6UL contains a internal touchscreen controller,
this patch add a driver to support this controller.
Signed-off-by: Haibo Chen <haibo.chen@freescale.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The Colibri Vybrid VF50 module supports 4-wire touchscreens using
FETs and ADC inputs. This driver uses the IIO consumer interface
and relies on the vf610_adc driver based on the IIO framework.
Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Add support for hardware which uses an I2C Serializer / Deserializer
(SerDes) to communicate with the zFroce touch driver. In this case the
SerDes will be configured as an interrupt controller and the zForce driver
will have no access to poll the GPIO line.
To support this, we add two dedicated new GPIOs in the device tree:
reset-gpios and irq-gpios, with the irq-gpios being optional.
To not break the existing device trees, the index based 'gpios' entries
are still supported, but marked as deprecated.
With this, if the interrupt GPIO is available, either via the old or new
device tree style, the while loop will read and handle the packets as long
as the GPIO indicates that the interrupt is asserted (existing, unchanged
driver behavior).
If the interrupt GPIO isn't available, i.e. not configured via the new
device tree style, we are falling back to one read per ISR invocation
(new behavior to support the SerDes).
Note that the gpiod functions help to handle the optional GPIO:
devm_gpiod_get_index_optional() will return NULL in case the interrupt
GPIO isn't available. And gpiod_get_value_cansleep() does cover this, too,
by returning 0 in this case.
Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
Reviewed-by: Heiko Stuebner <heiko.stuebner@bq.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Merge tag 'v4.2-rc3' into next
Sync up with Linux 4.2-rc3 to bring in infrastructure (OF) pieces.
The controller has a RESET pin which is usually controlled over
a GPIO line. If such a GPIO is provided, perform a RESET
during probe.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Here's the big, really big, staging tree patches for 4.2-rc1.
Loads of stuff in here, almost all just coding style fixes / churn, and
a few new drivers as well, one of which I just disabled from the build a
few minutes ago due to way too many build warnings.
Other than the one "disable this driver" patch, all of these have been
in linux-next for quite a while with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver updates from Greg KH:
"Here's the big, really big, staging tree patches for 4.2-rc1.
Loads of stuff in here, almost all just coding style fixes / churn,
and a few new drivers as well, one of which I just disabled from the
build a few minutes ago due to way too many build warnings.
Other than the one "disable this driver" patch, all of these have been
in linux-next for quite a while with no reported issues"
* tag 'staging-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (1163 commits)
staging: wilc1000: disable driver due to build warnings
Staging: rts5208: fix CHANGE_LINK_STATE value
Staging: sm750fb: ddk750_swi2c.c: Insert spaces before parenthesis
Staging: sm750fb: ddk750_swi2c.c: Place braces on correct lines
Staging: sm750fb: ddk750_swi2c.c: Insert spaces around operators
Staging: sm750fb: ddk750_swi2c.c: Replace spaces with tabs
Staging: sm750fb: ddk750_swi2c.h: Shorten lines to under 80 characters
Staging: sm750fb: ddk750_swi2c.h: Replace spaces with tabs
Staging: sm750fb: modedb.h: Shorten lines to under 80 characters
Staging: sm750fb: modedb.h: Replace spaces with tabs
staging: comedi: addi_apci_3120: rename 'this_board' variables
staging: comedi: addi_apci_1516: rename 'this_board' variables
staging: comedi: ni_atmio: cleanup ni_getboardtype()
staging: comedi: vmk80xx: sanity check context used to get the boardinfo
staging: comedi: vmk80xx: rename 'boardinfo' variables
staging: comedi: dt3000: rename 'this_board' variables
staging: comedi: adv_pci_dio: rename 'this_board' variables
staging: comedi: cb_pcidas64: rename 'thisboard' variables
staging: comedi: cb_pcidas: rename 'thisboard' variables
staging: comedi: me4000: rename 'thisboard' variables
...
Fix dts to match what the Linux kernel expects. This works around
touchscreen problems in 4.1 linux on Nokia n900.
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Add optional DT properties to set open delay, sample delay and number
of averages per sample for each adc step. Open delay, sample delay
and averaging are some of the parameters that affect the sampling rate
and accuracy of the sample. Making these parameters configurable via
DT will help in balancing speed vs accuracy.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The ChipOne icn8318 is an i2c capacitive touchscreen controller typically
used in cheap android tablets, this commit adds a driver for it.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
On devices with a native portrait screen a landscape touchscreen /
digitizer may be used, this happens e.g. on ebook readers. In this case the
X and Y axis of the touchscreen are swapped compared to the screen.
Add a touchscreen-swapped-x-y property which drivers can use to see if they
need to swap the axis to make the touchscreen coordinates match the screen
coordinates.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Add initial version of the Broadcom touchscreen driver.
Reviewed-by: Ray Jui <rjui@broadcom.com>
Reviewed-by: Scott Branden <sbranden@broadcom.com>
Tested-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Jonathan Richardson <jonathar@broadcom.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit introduces two new optional device-tree properties:
"tp-sensitive-adjust": adjust sensitivity of pen down detection
"filter-type": select median and averaging filter
The previous fixed defaults, didn't work well for the Olimex
A13-LCD10TS (I have).
Signed-off-by: Jens Thiele <karme@karme.de>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Testing has revealed that the temperature in the rtp controller of the A10
(sun4i) SoC has a different curve then on the A13 (sun5i) and later models.
Add a new sun5i-a13-ts compatible to differentiate the newer models and
set the curve based on the compatible string.
The new curve is still not ideal on all A10-s, that seems to have to
do with there being a large spread between different A10-s out there,
the new curve us based on callibration results on 4 completely different
models:
raw min raw max temp min temp max stepsize offset
Tong Zhang's hackberry 2402 2680 45.0 80.0 0.125 -255.3
Hansg's Cubieboard 2207 2300 36.0 45.0 0.096 -175.8
Olliver's lime 1 (*): 2258 2537 48.3 87.1 0.139 -265.7
Olliver's lime 2 (*): 2222 2486 46.7 91.7 0.170 -331.0
*) from: http://linux-sunxi.org/Temperature_Calibration
Average all 4: 0.133 -257.0
Average without outliers (middle 2): 0.132 -261.0
Since it is better to slightly overreport the temperature this patch uses
the average of all 4 as curve.
This fixes the temperature reported on the A10 being much higher then
expected.
Reported-by: Tong Zhang <lovewilliam@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This change adds device tree support and binding information for Goodix
GT9xx series touchscreen controller. It also adds support for 5-finger
chips, like GT911 and GT912, which can be found on ARM tablets, such as
Wexler TAB7200 and MSI Primo73.
Datasheets can be found here:
https://drive.google.com/folderview?id=0BxCVOQS3ZymGfmJyY2RKbE5XbVlKNlktVTlwV0lxNEdxd2dzeWZER094cmJPVnMxN1F0Yzg&usp=sharing
Signed-off-by: Aleksei Mamlin <mamlinav@gmail.com>
Reviewed-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This patch reads charge delay from tsc DT node and writes to
REG_CHARGEDELAY register. If the charge delay is not specified in DT then
default value of 0x400(CHARGEDLY_OPENDLY) is used.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
