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path: root/drivers/input/touchscreen/ili210x.c
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2021-05-11Input: ili210x - add missing negation for touch indication on ili210xHansem Ro1-1/+1
commit ac05a8a927e5a1027592d8f98510a511dadeed14 upstream. This adds the negation needed for proper finger detection on Ilitek ili2107/ili210x. This fixes polling issues (on Amazon Kindle Fire) caused by returning false for the cooresponding finger on the touchscreen. Signed-off-by: Hansem Ro <hansemro@outlook.com> Fixes: e3559442afd2a ("ili210x - rework the touchscreen sample processing") Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-02-10Input: ili210x - implement pressure reporting for ILI251xMarek Vasut1-7/+19
commit 60159e9e7bc7e528c103b6b6d47dfd83af29669c upstream. The ILI251x seems to report pressure information in the 5th byte of each per-finger touch data element. On the available hardware, this information has the values ranging from 0x0 to 0xa, which is also matching the downstream example code. Report pressure information on the ILI251x. Signed-off-by: Marek Vasut <marex@denx.de> Link: https://lore.kernel.org/r/20201224071238.160098-1-marex@denx.de Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-10Input: ili210x - add ili2120 supportLuca Weiss1-0/+32
This adds support for the Ilitek ili2120 touchscreen found in the Fairphone 2 smartphone. Signed-off-by: Luca Weiss <luca@z3ntu.xyz> Link: https://lore.kernel.org/r/20200209151904.661210-1-luca@z3ntu.xyz Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2020-02-10Input: ili210x - fix return value of is_visible functionLuca Weiss1-1/+1
The is_visible function expects the permissions associated with an attribute of the sysfs group or 0 if an attribute is not visible. Change the code to return the attribute permissions when the attribute should be visible which resolves the warning: Attribute calibrate: Invalid permissions 01 Fixes: cc12ba1872c6 ("Input: ili210x - optionally show calibrate sysfs attribute") Signed-off-by: Luca Weiss <luca@z3ntu.xyz> Reviewed-by: Sven Van Asbroeck <TheSven73@gmail.com> Link: https://lore.kernel.org/r/20200209145628.649409-1-luca@z3ntu.xyz Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2019-11-13Input: ili210x - optionally show calibrate sysfs attributeSven Van Asbroeck1-0/+14
Only show the 'calibrate' sysfs attribute on chip flavours which support calibration by writing to a calibration register. Do this by adding a flag to the chip operations structure. Signed-off-by: Sven Van Asbroeck <TheSven73@gmail.com> Link: https://lore.kernel.org/r/20191112210148.3535-2-TheSven73@gmail.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2019-11-13Input: ili210x - add resolution to chip operations structureSven Van Asbroeck1-2/+7
Optionally allow the touch screen resolution to be set by adding it to the chip operations structure. If it is omitted (left zero), the resolution defaults to 64K. Which is the previously hard-coded value. Set the ili2117 resolution to 2048, as indicated in its datasheet. Signed-off-by: Sven Van Asbroeck <TheSven73@gmail.com> Link: https://lore.kernel.org/r/20191112210148.3535-1-TheSven73@gmail.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2019-11-13Input: ili210x - do not retrieve/print chip firmware versionSven Van Asbroeck1-21/+0
The driver's method to retrieve the firmware version on ili2117/ ili2118 chip flavours is incorrect. The firmware version register address and layout are wrong. The firmware version is not actually used anywhere inside or outside this driver. There is a dev_dbg() print, but that is only visible when the developer explicitly compiles in debug support. Don't make the code more complicated to preserve a feature that no-one is using. Remove all code associated with chip firmware version. Signed-off-by: Sven Van Asbroeck <TheSven73@gmail.com> Link: https://lore.kernel.org/r/20191112164429.11225-1-TheSven73@gmail.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2019-11-12Input: ili210x - remove unneeded suspend and resume handlersDmitry Torokhov1-24/+0
When I2C client is instantiated with I2C_CLIENT_WAKE flag (either via "wakeup-source" device property, or via board info flag), it will mark the main IRQ line as wakeup IRQ, which will ensure that it will be enabled for wakeup when system transitions to suspend state. Since our suspend/resume handlers were only managing IRQ wakeup state, they are no longer needed, and can be removed. Tested-by: Adam Ford <aford173@gmail.com> #imx6q-logicpd Tested-by: Sven Van Asbroeck <TheSven73@gmail.com> # ILI2118A variant Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2019-11-12Input: ili210x - do not unconditionally mark touchscreen as wakeup sourceDmitry Torokhov1-2/+0
I2C devices that are supposed to be wakeup sources should be instantiated with I2C_CLIENT_WAKE flag (which can be either set by in board info, or retrieved from "wakeup-source" property); individual drivers should not be marking devices as wakeup sources unconditionally. Tested-by: Adam Ford <aford173@gmail.com> #imx6q-logicpd Tested-by: Sven Van Asbroeck <TheSven73@gmail.com> # ILI2118A variant Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2019-11-12Input: ili210x - define and use chip operations structureDmitry Torokhov1-136/+173
Instead of doing if/else if/else on the chip's model number let's define chip operations structure and use it to perform indirect calls. With number of protocols supported by the driver growing, this makes it better maintainable. This change includes fixes to checks whether the driver should continue polling the controller by Sven Van Asbroeck <thesven73@gmail.com>. Tested-by: Adam Ford <aford173@gmail.com> #imx6q-logicpd Tested-by: Sven Van Asbroeck <TheSven73@gmail.com> # ILI2118A variant Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2019-11-12Input: ili210x - do not set parent device explicitlyDmitry Torokhov1-1/+0
We are using devm_input_allocate_device() that set's up the parent for us, no need to do it ourselves. Tested-by: Adam Ford <aford173@gmail.com> #imx6q-logicpd Tested-by: Sven Van Asbroeck <TheSven73@gmail.com> # ILI2118A variant Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2019-11-12Input: ili210x - handle errors from input_mt_init_slots()Dmitry Torokhov1-1/+6
input_mt_init_slots() may fail and we need to handle such failures. Tested-by: Adam Ford <aford173@gmail.com> #imx6q-logicpd Tested-by: Sven Van Asbroeck <TheSven73@gmail.com> # ILI2118A variant Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2019-11-12Input: ili210x - switch to using threaded IRQDmitry Torokhov1-61/+56
Let's switch the driver to using threaded IRQ so that we do not need to manage the interrupt and work separately, and we do not acknowledge interrupt until we finished handling it completely. Tested-by: Adam Ford <aford173@gmail.com> #imx6q-logicpd Tested-by: Sven Van Asbroeck <TheSven73@gmail.com> # ILI2118A variant Tested-by: Marek Vasut <marex@denx.de> # ILI2117 Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2019-11-12Input: ili210x - add ILI2117 supportMarek Vasut1-1/+45
Add support for ILI2117 touch controller. This controller is similar to the ILI210x and ILI251x, except for the following differences: - Reading out of touch data must happen at most 300 mS after the interrupt line was asserted. No command must be sent, the data are returned upon pure I2C read of 43 bytes long. - Supports 10 simultaneous touch inputs. - Touch data format is slightly different. Signed-off-by: Marek Vasut <marex@denx.de> Reviewed-by: Rob Herring <robh@kernel.org> # for DT binding Tested-by: Adam Ford <aford173@gmail.com> #imx6q-logicpd Tested-by: Sven Van Asbroeck <TheSven73@gmail.com> # ILI2118A variant Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2019-05-21treewide: Add SPDX license identifier for more missed filesThomas Gleixner1-0/+1
Add SPDX license identifiers to all files which: - Have no license information of any form - Have MODULE_LICENCE("GPL*") inside which was used in the initial scan/conversion to ignore the file These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-02-09Input: ili210x - fetch touchscreen geometry from DTMarek Vasut1-40/+11
Fetching the geometry from the ILI251x registers seems unreliable and sometimes returns all zeroes. Add support for fetching the geometry and axis inversion from DT instead. Signed-off-by: Marek Vasut <marex@denx.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2019-02-08Input: ili210x - switch to using devm_device_add_group()Dmitry Torokhov1-14/+2
By switching to devm_device_add_group() we can complete driver conversion to using managed resources and get rid of ili210x_i2c_remove(). Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2019-02-07Input: ili210x - add ILI251X supportMarek Vasut1-15/+103
Add support for ILI251x touch controller. This controller is similar to the ILI210x, except for the following differences: - Does not support I2C R-W transfer, Read must be followed by an obscenely long delay, and then followed by Write - Does support 10 simultaneous touch inputs. - Touch data format is slightly different, pressure reporting does not work although the touch data contain such information. Signed-off-by: Marek Vasut <marex@denx.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2019-02-07Input: ili210x - add OF match tableMarek Vasut1-0/+7
Add OF match table for the ili210x touchscreen. Signed-off-by: Marek Vasut <marex@denx.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2019-02-07Input: ili210x - reorder probeMarek Vasut1-16/+16
Perform the register access only after the I2C client data are set, this is only done in preparation for the subsequent patch which uses the I2C client data in the register IO function. Signed-off-by: Marek Vasut <marex@denx.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2019-02-07Input: ili210x - rework the touchscreen sample processingMarek Vasut1-25/+30
Get rid of the packed structures for representing data as that does not apply to other similar Ilitek touchscreens. Instead, implement a function which parses the data and reports touch events and coordinates. Signed-off-by: Marek Vasut <marex@denx.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2019-02-07Input: ili210x - convert to devm IRQMarek Vasut1-11/+15
Convert the driver to devm_request_irq(), drop the related unmanaged deregistration code and add ili210x_irq_teardown() to tear the IRQ down and cancel possible touchscreen pending work. Signed-off-by: Marek Vasut <marex@denx.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2019-02-07Input: ili210x - add reset GPIO supportMarek Vasut1-0/+26
The touchscreen can have a reset GPIO connected to it, add support for such an arrangement. Signed-off-by: Marek Vasut <marex@denx.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2019-02-07Input: ili210x - convert to devm_ functionsMarek Vasut1-10/+7
Convert the driver to dev-managed allocations. Signed-off-by: Marek Vasut <marex@denx.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2019-02-07Input: ili210x - drop get_pendown_stateMarek Vasut1-12/+1
The .get_pendown_state callback is set only by the platform data code, which was just removed. Thus, get_pendown_state() always returns false, so drop that altogether. Signed-off-by: Marek Vasut <marex@denx.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2019-02-07Input: ili210x - drop platform data supportMarek Vasut1-10/+2
There is not a single user of the ili210x platform data in the kernel, just drop it. Signed-off-by: Marek Vasut <marex@denx.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-01-23Input: touchscreen - drop unnecessary calls to input_set_drvdataGuenter Roeck1-1/+0
Since there is no call to dev_get_drvdata() or input_get_drvdata(), the call to input_set_drvdata() is unnecessary and can be dropped. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-01-22Input: touchscreen - use local variables consistentlyGuenter Roeck1-1/+1
If a function declares a variable to access a structure element, use it consistently. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2016-08-03Input: ili210x - fix permissions on "calibrate" attributeDmitry Torokhov1-1/+1
"calibrate" attribute does not provide "show" methods and thus we should not mark it as readable. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-09-04Merge branch 'for-linus' of ↵Linus Torvalds1-1/+0
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Pull input subsystem updates from Dmitry Torokhov: "Drivers, drivers, drivers... No interesting input core changes this time" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (74 commits) Input: elan_i2c - use iap_version to get firmware information Input: max8997_haptic - fix module alias Input: elan_i2c - fix typos for validpage_count Input: psmouse - add small delay for IBM trackpoint pass-through mode Input: synaptics - fix handling of disabling gesture mode Input: elan_i2c - enable ELAN0100 acpi panels Input: gpio-keys - report error when disabling unsupported key Input: sur40 - fix error return code Input: sentelic - silence some underflow warnings Input: zhenhua - switch to using bitrev8() Input: cros_ec_keyb - replace KEYBOARD_CROS_EC dependency Input: cap11xx - add LED support Input: elants_i2c - fix for devm_gpiod_get API change Input: elan_i2c - enable asynchronous probing Input: elants_i2c - enable asynchronous probing Input: elants_i2c - wire up regulator support Input: do not emit unneeded EV_SYN when suspending Input: elants_i2c - disable idle mode before updating firmware MAINTAINERS: Add maintainer for atmel_mxt_ts Input: atmel_mxt_ts - remove warning on zero T44 count ...
2015-08-07treewide: Fix typo in printkMasanari Iida1-2/+2
This patch fix spelling typo inv various part of sources. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.com>
2015-07-18Input: drop owner assignment from i2c_driverKrzysztof Kozlowski1-1/+0
i2c_driver does not need to set an owner because i2c_register_driver() will set it. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-11-02Input: touchscreen - use __maybe_unused instead of ifdef around suspend/resumeJingoo Han1-4/+2
Use __maybe_unused instead of ifdef guards around suspend/resume functions, in order to increase build coverage and fix build warnings. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2013-12-06Input: use dev_get_platdata()Jingoo Han1-1/+1
Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly. This is a cosmetic change to make the code simpler and enhance the readability. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Fugang Duan <B38611@freescale.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2012-11-24Input: remove use of __devexitBill Pemberton1-1/+1
CONFIG_HOTPLUG is going away as an option so __devexit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2012-11-24Input: remove use of __devinitBill Pemberton1-1/+1
CONFIG_HOTPLUG is going away as an option so __devinit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Javier Martinez Canillas <javier@dowhile0.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2012-11-24Input: remove use of __devexit_pBill Pemberton1-1/+1
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2012-09-19Input: MT - Add flags to input_mt_init_slots()Henrik Rydberg1-1/+1
Preparing to move more repeated code into the mt core, add a flags argument to the input_mt_slots_init() function. Reviewed-and-tested-by: Benjamin Tissoires <benjamin.tissoires@enac.fr> Tested-by: Ping Cheng <pingc@wacom.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
2012-03-17Input: ili210x - add support for Ilitek ILI210x based touchscreensOlivier Sobrie1-0/+360
The driver supports chipsets ILI2102, ILI2102s, ILI2103, ILI2103s and ILI2105. Such kind of controllers can be found in Amazon Kindle Fire devices. Reviewed-by: Jan Paesmans <jan.paesmans@gmail.com> Reviewed-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Olivier Sobrie <olivier@sobrie.be> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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