linux.git/drivers/input/touchscreen, branch v6.18-rc2 Linux kernel source tree Merge tag 'input-for-v6.18-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2025-10-08T16:44:38+00:00 Linus Torvalds torvalds@linux-foundation.org 2025-10-08T16:44:38+00:00 99cedb6b8f4101e2780f10b9e76d2f346a1e4316 Pull input updates from Dmitry Torokhov: - Conversions to yaml/json schema and fixes for input-related device tree bindings - New drivers: - Awinic AW86927 haptic chip - Hynitron CST816x series controller - Himax HX852x(ES) touchscreen controller - Fix uinput to not leak kernel memory via a gap in uinput_ff_upload_compat structure - Prevent overflow in pressure calculation in tsc2007 driver causing phantom touches - Make the Atmel maxTouch driver support generic touchscreen configuration (flip, rotate, etc) - Drop support for platform data in tca8418_keypad, pxa27x-keypad, spear-keyboard and twl4030_keypad drivers, they all now rely on generic device properties for configuration - Other assorted changes and fixes * tag 'input-for-v6.18-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (50 commits) Input: atmel_mxt_ts - allow reset GPIO to sleep Input: aw86927 - fix error code in probe() Input: psxpad-spi - add a check for the return value of spi_setup() Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak Input: aw86927 - add driver for Awinic AW86927 dt-bindings: input: Add Awinic AW86927 dt-bindings: touchscreen: remove touchscreen.txt dt-bindings: arm: bcm: raspberrypi,bcm2835-firmware: Add touchscreen child node dt-bindings: touchscreen: convert eeti bindings to json schema Input: pm8941-pwrkey - disable wakeup for resin by default dt-bindings: input: pm8941-pwrkey: Document wakeup-source property Input: add driver for Hynitron CST816x series dt-bindings: input: touchscreen: add hynitron cst816x series Input: imx6ul_tsc - set glitch threshold by DTS property dt-bindings: touchscreen: fsl,imx6ul-tsc: support glitch thresold dt-bindings: touchscreen: add debounce-delay-us property Input: ps2-gpio - fix typo Input: atmel_mxt_ts - add support for generic touchscreen configurations dt-bindings: input: maxtouch: add common touchscreen properties dt-bindings: touchscreen: convert zet6223 bindings to json schema ... 
Pull input updates from Dmitry Torokhov:

 - Conversions to yaml/json schema and fixes for input-related device
   tree bindings

 - New drivers:
     - Awinic AW86927 haptic chip
     - Hynitron CST816x series controller
     - Himax HX852x(ES) touchscreen controller

 - Fix uinput to not leak kernel memory via a gap in
   uinput_ff_upload_compat structure

 - Prevent overflow in pressure calculation in tsc2007 driver causing
   phantom touches

 - Make the Atmel maxTouch driver support generic touchscreen
   configuration (flip, rotate, etc)

 - Drop support for platform data in tca8418_keypad, pxa27x-keypad,
   spear-keyboard and twl4030_keypad drivers, they all now rely on
   generic device properties for configuration

 - Other assorted changes and fixes

* tag 'input-for-v6.18-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (50 commits)
  Input: atmel_mxt_ts - allow reset GPIO to sleep
  Input: aw86927 - fix error code in probe()
  Input: psxpad-spi - add a check for the return value of spi_setup()
  Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak
  Input: aw86927 - add driver for Awinic AW86927
  dt-bindings: input: Add Awinic AW86927
  dt-bindings: touchscreen: remove touchscreen.txt
  dt-bindings: arm: bcm: raspberrypi,bcm2835-firmware: Add touchscreen child node
  dt-bindings: touchscreen: convert eeti bindings to json schema
  Input: pm8941-pwrkey - disable wakeup for resin by default
  dt-bindings: input: pm8941-pwrkey: Document wakeup-source property
  Input: add driver for Hynitron CST816x series
  dt-bindings: input: touchscreen: add hynitron cst816x series
  Input: imx6ul_tsc - set glitch threshold by DTS property
  dt-bindings: touchscreen: fsl,imx6ul-tsc: support glitch thresold
  dt-bindings: touchscreen: add debounce-delay-us property
  Input: ps2-gpio - fix typo
  Input: atmel_mxt_ts - add support for generic touchscreen configurations
  dt-bindings: input: maxtouch: add common touchscreen properties
  dt-bindings: touchscreen: convert zet6223 bindings to json schema
  ...
Input: atmel_mxt_ts - allow reset GPIO to sleep 2025-10-08T04:51:31+00:00 Marek Vasut marek.vasut@mailbox.org 2025-10-05T02:33:10+00:00 c7866ee0a9ddd9789faadf58cdac6abd7aabf045 The reset GPIO is not toggled in any critical section where it couldn't sleep, allow the reset GPIO to sleep. This allows the driver to operate reset GPIOs connected to I2C GPIO expanders. Signed-off-by: Marek Vasut <marek.vasut@mailbox.org> Link: https://lore.kernel.org/r/20251005023335.166483-1-marek.vasut@mailbox.org Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
The reset GPIO is not toggled in any critical section where it couldn't
sleep, allow the reset GPIO to sleep. This allows the driver to operate
reset GPIOs connected to I2C GPIO expanders.

Signed-off-by: Marek Vasut <marek.vasut@mailbox.org>
Link: https://lore.kernel.org/r/20251005023335.166483-1-marek.vasut@mailbox.org
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Input: add driver for Hynitron CST816x series 2025-09-25T05:36:50+00:00 Oleh Kuzhylnyi kuzhylol@gmail.com 2025-09-25T04:43:14+00:00 c87a819bec86f9aff695caf79d672082bb123451 Introduce support for the Hynitron CST816x series touchscreen controller used for 240×240 1.28-inch Round LCD Display Module manufactured by Waveshare Electronics. The driver is designed based on an Arduino implementation marked as under MIT License. This driver is written for a particular round display based on the CST816S controller, which is not compatiable with existing driver for Hynitron controllers. Signed-off-by: Oleh Kuzhylnyi <kuzhylol@gmail.com> Link: https://lore.kernel.org/r/20250921125939.249788-2-kuzhylol@gmail.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
Introduce support for the Hynitron CST816x series touchscreen controller
used for 240×240 1.28-inch Round LCD Display Module manufactured
by Waveshare Electronics. The driver is designed based on an Arduino
implementation marked as under MIT License. This driver is written
for a particular round display based on the CST816S controller, which
is not compatiable with existing driver for Hynitron controllers.

Signed-off-by: Oleh Kuzhylnyi <kuzhylol@gmail.com>
Link: https://lore.kernel.org/r/20250921125939.249788-2-kuzhylol@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Input: imx6ul_tsc - set glitch threshold by DTS property 2025-09-24T21:21:13+00:00 Dario Binacchi dario.binacchi@amarulasolutions.com 2025-09-23T14:37:37+00:00 5042e57d39719e531f3e122f12bf320869e84782 Set the glitch threshold by DTS property and keep the existing default behavior if the 'debounce-delay-us' is not present. Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Link: https://lore.kernel.org/r/20250923143746.2857292-7-dario.binacchi@amarulasolutions.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
Set the glitch threshold by DTS property and keep the existing default
behavior if the 'debounce-delay-us' is not present.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20250923143746.2857292-7-dario.binacchi@amarulasolutions.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Input: atmel_mxt_ts - add support for generic touchscreen configurations 2025-09-19T18:23:15+00:00 Svyatoslav Ryhel clamor95@gmail.com 2025-09-09T05:49:03+00:00 fd321a861fcae862a4800fa49375336ee64e6c9c This provides support for generic touchscreen configuration options like swapped-x-y, min-x, min-y, size-x, size-y, etc. Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com> Link: https://lore.kernel.org/r/20250909054903.11519-3-clamor95@gmail.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
This provides support for generic touchscreen configuration options like
swapped-x-y, min-x, min-y, size-x, size-y, etc.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Link: https://lore.kernel.org/r/20250909054903.11519-3-clamor95@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Input: imx6ul_tsc - use BIT, FIELD_{GET,PREP} and GENMASK macros 2025-09-18T05:38:40+00:00 Dario Binacchi dario.binacchi@amarulasolutions.com 2025-09-17T08:05:07+00:00 05fcd78bcb14f68d46e4de8812ce6646d3d7f941 Replace opencoded masking and shifting, with BIT(), GENMASK(), FIELD_GET() and FIELD_PREP() macros. Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Link: https://lore.kernel.org/r/20250917080534.1772202-3-dario.binacchi@amarulasolutions.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
Replace opencoded masking and shifting, with BIT(), GENMASK(),
FIELD_GET() and FIELD_PREP() macros.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20250917080534.1772202-3-dario.binacchi@amarulasolutions.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Input: imx6ul_tsc - fix typo in register name 2025-09-18T05:38:34+00:00 Michael Trimarchi michael@amarulasolutions.com 2025-09-17T08:05:06+00:00 6c521885da34e61908d84a4f3eda85545f060848 Replace 'SETING' with 'SETTING'. Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com> Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Link: https://lore.kernel.org/r/20250917080534.1772202-2-dario.binacchi@amarulasolutions.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
Replace 'SETING' with 'SETTING'.

Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20250917080534.1772202-2-dario.binacchi@amarulasolutions.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Input: add Himax HX852x(ES) touchscreen driver 2025-09-17T21:44:02+00:00 Stephan Gerhold stephan@gerhold.net 2025-09-17T21:11:32+00:00 09fd8626cf8285503b4803b30b06c296599a24e7 Add a simple driver for the Himax HX852x(ES) touch panel controller, with support for multi-touch and capacitive touch keys. The driver is somewhat based on sample code from Himax. However, that code was rather confusing, so that we spent a significant amount of time just trying to understand the packet format and register commands. In this driver they are described with clean structs and defines rather than magic numbers and offset calculations. Co-developed-by: Jonathan Albrieux <jonathan.albrieux@gmail.com> Signed-off-by: Jonathan Albrieux <jonathan.albrieux@gmail.com> Reviewed-by: Jeff LaBundy <jeff@labundy.com> Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Link: https://lore.kernel.org/r/20250915-hx852x-v5-2-b938182f1056@linaro.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
Add a simple driver for the Himax HX852x(ES) touch panel controller,
with support for multi-touch and capacitive touch keys.

The driver is somewhat based on sample code from Himax. However, that
code was rather confusing, so that we spent a significant amount of
time just trying to understand the packet format and register commands.
In this driver they are described with clean structs and defines rather
than magic numbers and offset calculations.

Co-developed-by: Jonathan Albrieux <jonathan.albrieux@gmail.com>
Signed-off-by: Jonathan Albrieux <jonathan.albrieux@gmail.com>
Reviewed-by: Jeff LaBundy <jeff@labundy.com>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20250915-hx852x-v5-2-b938182f1056@linaro.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
mfd: input: rtc: mc13783: Remove deprecated mc13xxx_irq_ack() 2025-09-11T10:39:31+00:00 Alexander Kurz akurz@blala.de 2025-08-11T06:43:58+00:00 f0addd325ef692c92c522a2ba4d9db13fc90e664 mc13xxx_irq_ack() got deprecated and became dead code with commit 10f9edaeaa30 ("mfd: mc13xxx: Use regmap irq framework for interrupts"). It should be safe to remove it now. Signed-off-by: Alexander Kurz <akurz@blala.de> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> # for input Link: https://lore.kernel.org/r/20250811064358.1659-1-akurz@blala.de Signed-off-by: Lee Jones <lee@kernel.org> 
mc13xxx_irq_ack() got deprecated and became dead code with commit
10f9edaeaa30 ("mfd: mc13xxx: Use regmap irq framework for interrupts").
It should be safe to remove it now.

Signed-off-by: Alexander Kurz <akurz@blala.de>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> # for input
Link: https://lore.kernel.org/r/20250811064358.1659-1-akurz@blala.de
Signed-off-by: Lee Jones <lee@kernel.org>
Input: tsc2007 - prevent overflow in pressure calculation 2025-09-03T14:44:00+00:00 Johannes Kirchmair johannes.kirchmair@skidata.com 2025-01-29T13:51:20+00:00 9a12e2fb3f517d5bd72efa565a8e591e6fff311c The touch resistance calculation in the tsc2007 driver is prone to overflow if (z2 - z1) is large and also x is reasonably big. This overflow results in the driver emitting input events when very little touch pressure is applied. In these events the x and y coordinates can be substantially off. Avoid the overflow by using u64 when calculating resistance value. Signed-off-by: Johannes Kirchmair <johannes.kirchmair@skidata.com> Link: https://lore.kernel.org/r/20250129-fix_tsc_calculation_overflow-v2-1-9e51333496ad@skidata.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
The touch resistance calculation in the tsc2007 driver is prone to
overflow if (z2 - z1) is large and also x is reasonably big. This
overflow results in the driver emitting input events when very little
touch pressure is applied. In these events the x and y coordinates can
be substantially off.

Avoid the overflow by using u64 when calculating resistance value.

Signed-off-by: Johannes Kirchmair <johannes.kirchmair@skidata.com>
Link: https://lore.kernel.org/r/20250129-fix_tsc_calculation_overflow-v2-1-9e51333496ad@skidata.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>