This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This is the result of running the Coccinelle script from
scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to
avoid scalar types (which need careful case-by-case checking), and
instead replace kmalloc-family calls that allocate struct or union
object instances:
Single allocations: kmalloc(sizeof(TYPE), ...)
are replaced with: kmalloc_obj(TYPE, ...)
Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...)
are replaced with: kmalloc_objs(TYPE, COUNT, ...)
Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...)
are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...)
(where TYPE may also be *VAR)
The resulting allocations no longer return "void *", instead returning
"TYPE *".
Signed-off-by: Kees Cook <kees@kernel.org>
- support for FocalTech FT8112 added to i2c-hid driver
- support for FocalTech FT3518 added to edt-ft5x06 driver
- support for power buttons in TWL603x chips added to twl4030-pwrbutton
driver
- an update to gpio-decoder driver to make it usable on non-OF
platforms and to clean up the code
- an update to synaptics_i2c driver switching it to use managed
resources and a fix to restarting polling after resume
- an update to gpio-keys driver to fall back to getting IRQ from
resources if not specified using other means
- an update to ili210x driver to support polling mode
- a number of input drivers switched to scnprintf() to suppress
truncation warnings
- a number of updates and conversions of device tree bindings to yaml
format
- fixes to spelling in comments and messages in several drivers
- other assorted fixups.
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Merge tag 'input-for-v7.0-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
- support for FocalTech FT8112 added to i2c-hid driver
- support for FocalTech FT3518 added to edt-ft5x06 driver
- support for power buttons in TWL603x chips added to twl4030-pwrbutton
driver
- an update to gpio-decoder driver to make it usable on non-OF
platforms and to clean up the code
- an update to synaptics_i2c driver switching it to use managed
resources and a fix to restarting polling after resume
- an update to gpio-keys driver to fall back to getting IRQ from
resources if not specified using other means
- an update to ili210x driver to support polling mode
- a number of input drivers switched to scnprintf() to suppress
truncation warnings
- a number of updates and conversions of device tree bindings to yaml
format
- fixes to spelling in comments and messages in several drivers
- other assorted fixups
* tag 'input-for-v7.0-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (57 commits)
dt-bindings: input: qcom,pm8941-pwrkey: Document PMM8654AU
dt-bindings: input: touchscreen: imagis: allow linux,keycodes for ist3038
Input: apbps2 - fix comment style and typos
Input: gpio_keys - fall back to platform_get_irq() for interrupt-only keys
Input: novatek-nvt-ts - drop wake_type check
dt-bindings: input: touchscreen: tsc2007: document '#io-channel-cells'
Input: ili210x - add support for polling mode
dt-bindings: touchscreen: trivial-touch: Drop 'interrupts' requirement for old Ilitek
Input: appletouch - fix potential race between resume and open
HID: i2c-hid: Add FocalTech FT8112
dt-bindings: input: i2c-hid: Introduce FocalTech FT8112
Input: synaptics_i2c - switch to using managed resources
Input: synaptics_i2c - guard polling restart in resume
Input: gpio_decoder - don't use "proxy" headers
Input: gpio_decoder - make use of the macros from bits.h
Input: gpio_decoder - replace custom loop by gpiod_get_array_value_cansleep()
Input: gpio_decoder - unify messages with help of dev_err_probe()
Input: gpio_decoder - make use of device properties
Input: serio - complete sizeof(*pointer) conversions
Input: wdt87xx_i2c - switch to use dev_err_probe()
...
The wake_type parameter from touchscreen registers is not used for
anything functional - the driver only validates that it matches a
hard-coded expected value per chip variant. This causes probe to fail
on touchscreens that report a different wake_type despite being
otherwise compatible.
Drop the wake_type check and the associated chip data member to allow
the existing compatibles to work with more touchscreen variants.
Signed-off-by: Gianluca Boiano <morf3089@gmail.com>
Suggested-by: Hans de Goede <hansg@kernel.org>
Link: https://patch.msgid.link/20260122001040.76869-1-morf3089@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
There are designs incorporating Ilitek ILI2xxx touch controller that
do not connect interrupt pin, for example Waveshare 13.3" DSI display.
To support such systems use polling mode for the input device when I2C
client does not have interrupt assigned to it.
Factor out ili210x_firmware_update_noirq() to allow conditional scoped
guard around this code. The scoped guard has to be applied only in case
the IRQ line is connected, and not applied otherwise.
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Link: https://patch.msgid.link/20260121230736.114623-2-marek.vasut+renesas@mailbox.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Remove <linux/hex.h> from <linux/kernel.h> and update all users/callers of
hex.h interfaces to directly #include <linux/hex.h> as part of the process
of putting kernel.h on a diet.
Removing hex.h from kernel.h means that 36K C source files don't have to
pay the price of parsing hex.h for the roughly 120 C source files that
need it.
This change has been build-tested with allmodconfig on most ARCHes. Also,
all users/callers of <linux/hex.h> in the entire source tree have been
updated if needed (if not already #included).
Link: https://lkml.kernel.org/r/20251215005206.2362276-1-rdunlap@infradead.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Yury Norov (NVIDIA) <yury.norov@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Switch to use dev_err_probe() to simplify the error path and
unify a message template. With that being done, drop the now no-op
message for -ENOMEM as allocator will print a big warning anyway
and remove duplicate message for devm_request_threaded_irq().
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260113082445.44186-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Switch the driver to use scnprintf() to avoid warnings about potential
truncation of "phys" field which we can tolerate.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260113082941.90006-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Switch the driver to use scnprintf() to avoid warnings about potential
truncation of "phys" field which we can tolerate.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260113082938.89437-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Switch the driver to use scnprintf() to avoid warnings about potential
truncation of "phys" field which we can tolerate.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260113082935.88801-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Switch the driver to use scnprintf() to avoid warnings about potential
truncation of "phys" field which we can tolerate.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260113082931.88083-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Switch the driver to use scnprintf() to avoid warnings about potential
truncation of "phys" field which we can tolerate.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260113082926.87049-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Switch the driver to use scnprintf() to avoid warnings about potential
truncation of "phys" field which we can tolerate.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260113082921.86167-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Switch the driver to use scnprintf() to avoid warnings about potential
truncation of "phys" field which we can tolerate.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260113082917.85109-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Switch the driver to use scnprintf() to avoid warnings about potential
truncation of "phys" field which we can tolerate.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260113082912.84123-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Switch the driver to use scnprintf() to avoid warnings about potential
truncation of "phys" field which we can tolerate.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260113082905.83718-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Switch the driver to use scnprintf() to avoid warnings about potential
truncation of "phys" field which we can tolerate.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260113082901.83668-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Switch the driver to use scnprintf() to avoid warnings about potential
truncation of "phys" field which we can tolerate.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260113082856.83617-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Switch the driver to use scnprintf() to avoid warnings about potential
truncation of "phys" field which we can tolerate.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260113082851.83584-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Switch the driver to use scnprintf() to avoid warnings about potential
truncation of "phys" field which we can tolerate.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260113082845.83550-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The driver also works with FT3518, which supports up to 10 touch points.
Add compatible data for it.
Co-developed-by: Kamil Gołda <kamil.golda@protonmail.com>
Signed-off-by: Kamil Gołda <kamil.golda@protonmail.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Yedaya Katsman <yedaya.ka@gmail.com>
Link: https://patch.msgid.link/20260118-touchscreen-patches-v3-2-1c6a729c5eb4@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The current validation 'wire_order[i] > ARRAY_SIZE(config_pins)' allows
wire_order[i] to equal ARRAY_SIZE(config_pins), which causes out-of-bounds
access when used as index in 'config_pins[wire_order[i]]'.
Since config_pins has 4 elements (indices 0-3), the valid range for
wire_order should be 0-3. Fix the off-by-one error by using >= instead
of > in the validation check.
Signed-off-by: Junjie Cao <junjie.cao@intel.com>
Link: https://patch.msgid.link/20251114062817.852698-1-junjie.cao@intel.com
Fixes: bb76dc09dd ("input: ti_am33x_tsc: Order of TSC wires, made configurable")
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The mdelay() is called in sleeping context and it should be OK to delay
slightly longer than requested, so switch the code to use fsleep() to
avoid spinning.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The ilitek touchscreen driver uses the non-sleeping gpiod_set_value
function for reset.
Switch to using gpiod_set_value_cansleep() when controlling reset_gpio to
support GPIO providers that may sleep, such as I2C GPIO expanders.
Further switch the mdelay calls on the reset path to fsleep (preferred
in non-atomic contexts).
This fixes noisy complaints in kernel log for gpio providers that do
sleep.
Signed-off-by: Josua Mayer <josua@solid-run.com>
Link: https://patch.msgid.link/20251201-imx8mp-hb-iiot-v4-2-53a4cd6c21bf@solid-run.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Under certain conditions (more prevalent after a suspend/resume cycle),
the touchscreen controller can send the "boot complete" interrupt before
it actually finished booting. In those cases, attempting to read touch
data resuls in a stream of "not ready" messages being read and
interpreted as a touch report. Check that the response is in fact a
touch report and discard it otherwise.
Reported-by: pitust <piotr@stelmaszek.com>
Closes: https://oftc.catirclogs.org/asahi/2025-12-17#34878715;
Fixes: 471a92f8a2 ("Input: apple_z2 - add a driver for Apple Z2 touchscreens")
Signed-off-by: Sasha Finkelstein <fnkl.kernel@gmail.com>
Link: https://patch.msgid.link/20251218-z2-init-fix-v1-1-48e3aa239caf@gmail.com
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Follow the advice in Documentation/filesystems/sysfs.rst:
show() should only use sysfs_emit() or sysfs_emit_at() when formatting
the value to be returned to user space.
Signed-off-by: Petr Hodina <petr.hodina@protonmail.com>
Signed-off-by: David Heidelberg <david@ixit.cz>
Link: https://patch.msgid.link/20251215-fts-fixes-v1-3-8c1e3a63ebf1@ixit.cz
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
No functional change.
Fixes: 78bcac7b2a ("Input: add support for the STMicroelectronics FingerTip touchscreen")
Signed-off-by: Petr Hodina <petr.hodina@protonmail.com>
Signed-off-by: David Heidelberg <david@ixit.cz>
Link: https://patch.msgid.link/20251215-fts-fixes-v1-2-8c1e3a63ebf1@ixit.cz
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
We're trying to enable regulator, not disable it.
Fixes: 78bcac7b2a ("Input: add support for the STMicroelectronics FingerTip touchscreen")
Suggested-by: Petr Hodina <petr.hodina@protonmail.com>
Signed-off-by: David Heidelberg <david@ixit.cz>
Link: https://patch.msgid.link/20251215-fts-fixes-v1-1-8c1e3a63ebf1@ixit.cz
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Merge tag 'v6.18' into next
Sync up with the mainline to bring in the latest APIs.
DT binding (ti,am3359-tsc.yaml) sets ti,coordinate-readouts to a
maximum of 6. The MFD parent also enforces that
(readouts * 2 + 2) + adc_channels <= 16 and fails probe if this
is violated, so the touchscreen subdriver will not even probe
in those cases.
Clamp coordinate_readouts > 6 to 6 in the subdriver to align with the
binding and keep behavior sane if invalid platform data bypasses schema
checks. Keep the existing default to 5 for non-positive values.
No functional change with valid DT.
Signed-off-by: Junjie Cao <junjie.cao@intel.com>
Link: https://patch.msgid.link/20251117032358.891822-1-junjie.cao@intel.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Merge tag 'v6.18-rc6' into for-linus
Sync up with the mainline to bring in definition of
INPUT_PROP_HAPTIC_TOUCHPAD.
The dev_err_probe() doesn't do anything when error is '-ENOMEM'.
Therefore, remove the useless call to dev_err_probe(), and just
return the value instead.
Signed-off-by: Xichao Zhao <zhao.xichao@vivo.com>
Link: https://patch.msgid.link/20250822034751.244248-3-zhao.xichao@vivo.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The %pe format specifier is designed to print error pointers. It prints
a symbolic error name (eg. -EINVAL) and it makes the code simpler by
omitting PTR_ERR()
This patch fixes this cocci report:
./cyttsp5.c:927:3-10: WARNING: Consider using %pe to print PTR_ERR()
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Link: https://patch.msgid.link/20251013-ptr_err-v1-1-2c5efbd82952@chromium.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The reset line is being set to input on non-ACPI devices apparently to
save power. This isn't being done on ACPI devices as it's been found
that some ACPI devices don't have a pull-up resistor fitted. This can
also be the case for non-ACPI devices, resulting in:
[ 941.672207] Goodix-TS 1-0014: Error reading 10 bytes from 0x814e: -110
[ 942.696168] Goodix-TS 1-0014: Error reading 10 bytes from 0x814e: -110
[ 945.832208] Goodix-TS 1-0014: Error reading 10 bytes from 0x814e: -110
This behaviour appears to have been initialing introduced in
ec6e1b4082. This doesn't seem to be based on information in either the
GT911 or GT9271 datasheets cited as sources of information for this
change. Thus it seems likely that it is based on functionality in the
Android driver which it also lists. This behaviour may be viable in very
specific instances where the hardware is well known, but seems unwise in
the upstream kernel where such hardware requirements can't be
guaranteed.
Remove this over optimisation to improve reliability on non-ACPI
devices.
Signed-off-by: Martyn Welch <martyn.welch@collabora.com>
Reviewed-by: Hans de Goede <hansg@kernel.org>
Link: https://lore.kernel.org/r/20251009134138.686215-1-martyn.welch@collabora.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
- a number of conversions to yaml/json schema and fixes for
input-related device tree bindings
- a new driver for Awinic AW86927 haptic chip
- a new driver for Hynitron CST816x series controller
- a new driver for add Himax HX852x(ES) touchscreen controller
- a fix to uinput to not leak kernel memory via a gap in
uinput_ff_upload_compat structure
- a fix to prevent overflow in pressure calculation in tsc2007 driver
causing phantom touches
- a change to Atmel maxTouch driver to support generic touchscreen
configuration (flip, rotate, etc.)
- support for platform data was dropped 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.
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Merge tag 'input-for-v6.18-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
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
...
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>
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>
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>
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>
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>
mc13xxx_irq_ack() got deprecated and became dead code with commit
10f9edaeaa ("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>
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>
In case tsc2007 is used as an ADC sensor there will be no interrupt
provided at all, so set up an interrupt only if one is present.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Link: https://lore.kernel.org/r/20250824091927.105121-3-clamor95@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Since pen GPIO request is optional, there is no reason to throw dev_warn if
such GPIO is not defined.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Link: https://lore.kernel.org/r/20250824091927.105121-2-clamor95@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
