The original wait time was 200ms which was enough for the firmware to
finish loading and boot. After that the firmware will perform
initialization and touch calibration, which will take about 1.1 second. The
touch calibration will change controller frequency to scan at the most
optimal frequency and during calibration/frequency switching process we may
run into i2c data errors. To avoid them we extend the sleep to 2500ms after
issuing the sw reset.
Signed-off-by: NHungNien Chen <hn.chen@weidahitech.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

These attributes can be used to identify controllers present in the system.
Signed-off-by: NHungNien Chen <hn.chen@weidahitech.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Let's switch to using standard touchscreen device properties parsing module
instead of doing it by hand in the driver.
Acked-by: NRoger Quadros <rogerq@ti.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

input_mt_init_slots() will perform necessary settings for performing
multi-touch to single-touch emulation, we do not need to do that ourselves.
Acked-by: NRoger Quadros <rogerq@ti.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

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: NRoger Quadros <rogerq@ti.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

We are using threaded interrupt handler and thus are allowed to sleep.
Let's switch over to gpiod_get_value_cansleep() so that we do not get
ugly warnings in case GPIO controller might sleep when accessing GPIO.
Acked-by: NRoger Quadros <rogerq@ti.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

This allows uniform parsing on legacy, DT and ACPI systems.
Acked-by: NRoger Quadros <rogerq@ti.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Let's move driver's platform data definitions from include/linux/input/
into include/linux/platform_data/ so that it stays with the rest of
platform data definitions.
Acked-by: NRoger Quadros <rogerq@ti.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Let's switch form OF to device properties so that common parsing code could
work not only on device tree but also on ACPI-based platforms.
Reviewed-by: NRoger Quadros <rogerq@ti.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

The binding specification says that "touchscreen-size-x" and "-y" specify
horizontal and vertical resolution of the touchscreen and therefore maximum
absolute coordinates should be reduced by 1 since we are starting with 0.
Reviewed-by: NRoger Quadros <rogerq@ti.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Do issue warning about axis that is present in device tree but not specified
by the driver even in case of multi-touch axis as callers now tell us if they
expect multi-touch data or not.
Reviewed-by: NRoger Quadros <rogerq@ti.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Use for_each_set_bit to check for set bits in bitmap
as it is more efficient and compact.
Signed-off-by: NAnshul Garg <aksgarg1989@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Use for_each_set_bit to check for set bits in bitmap
as it is more efficient than checking individual bits.
Signed-off-by: NAnshul Garg <aksgarg1989@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Use for_each_set_bit to check for set bits in bitmap as it is more
efficient than checking individual bits.
Signed-off-by: NAnshul Garg <aksgarg1989@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

These reg_default tables are not modified after initialized, so make them
const.
Signed-off-by: NAxel Lin <axel.lin@ingics.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Use the new GPIO descriptor interface to handle the zForce GPIOs.
This simplifies the code and allows transparently handle GPIO polarity, as
specified in device tree data.

Also switch to using gpio_{set|get}_value_cansleep() since none of the
callers is in atomic context and cansleep variant allows more GPIO
controllers to be used with the touchscreen.
Signed-off-by: NDirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Despite it's name, sign_extend32() is used for 16 bit values aswell.
Signed-off-by: NMartin Kepplinger <martink@posteo.de>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Get the scaling factor when it reads the sys params. The width value will
multiple the factor and report the value in the TOUCH_MAJOR event.
Signed-off-by: NHungNien Chen <hn.chen@weidahitech.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

There is no reason to have a newline between plat_id and xml_id1.
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Fix this compile error:

drivers/built-in.o: In function `arc_ps2_probe':
/mnt/linux/drivers/input/serio/arc_ps2.c:206: undefined reference to `devm_ioremap_resource'
Signed-off-by: NSebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

This fixes the following warning:

   drivers/input/touchscreen/wdt87xx_i2c.c: In function 'wdt87xx_validate_firmware':
>> drivers/input/touchscreen/wdt87xx_i2c.c:472:4: warning: format '%zd' expects argument of type 'signed size_t', but argument 4 has type 'size_t' [-Wformat=]
       size, fw->size);
Reported-by: Nkbuild test robot <fengguang.wu@intel.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

When applying touchscreen parameters specified in device tree let's make
sure we keep whatever setup was done by the driver and not reset the
missing values to zero.
Reported-by: NPavel Machek <pavel@ucw.cz>
Tested-by: NPavel Machek <pavel@ucw.cz>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

edt-ft5x06 is a touchscreen and thus a direct input device; let's amrk it
as such. This also allows us to drop some initialization code as
input_init_mt_slots() will do that for us.
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Instead of iterating over all bits in a bitmap and test them individually
let's siwtch to for_each_set_bit() which is more compact and is also
faster.

Also use bitmap_weight() when counting number of set bits.

This also fixes INPUT_DO_TOGGLE() implementation as it should have used
*_CNT as the upper boundary, not *_MAX.
Signed-off-by: NAnshul Garg <aksgarg1989@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

This is a driver for Weida HiTech WDT87xx series touchscreen controller.
Signed-off-by: NHungNien Chen <hn.chen@weidahitech.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Currently we are reporting the button state as inverted on all boards with
an axp209 pmic, tested on a ba10-tvbox, bananapi, bananapro, cubietruck and
utoo-p66 tablet.

The axp209 datasheet clearly states that the power button must be connected
between the PWRON key and ground. Which means that on a press we will get
a falling edge (dbf) irq not a rising one, and likewise on release we will
get a rising edge (dbr) irq, not a falling one.

This commit swaps the check for the 2 irqs fixing the inverted reporting of
the power button state.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Acked-by: NChen-Yu Tsai <wens@csie.org>
Acked-by: NCarlo Caione <carlo@caione.org>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

The controller only receives commands when its present. So for the
correct LED to be lit the LED command has to be sent on the present
event.
Signed-off-by: NPavel Rojtberg <rojtberg@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Based on Patch by Pierre-Loup A. Griffais <pgriffais@valvesoftware.com>:
Add the logic to set the LEDs on XBox Wireless controllers.  Command
sequence found by sniffing the Windows data stream when plugging the
device in.

Updated based on comments on linux-input:
unify codepaths in xpad_send_led_command for wired/ wireless controller.
Also document command values for clarification.
All values tested on Xbox 360 Wireless Controller.
Signed-off-by: NPavel Rojtberg <rojtberg@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

clk_prepare_enable() may fail, so we should better check its return value
and propagate it in the case of error.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

The "INPUT MULTITOUCH (MT) PROTOCOL" entry git tree is not there on
git.kernel.org.
Signed-off-by: NBaruch Siach <baruch@tkos.co.il>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Since 39b2bbe3 (gpio: add flags argument to gpiod_get*() functions)
which appeared in v3.17-rc1, the gpiod_get* functions take an additional
parameter that allows to specify direction and initial value for
output. Simplify drivers accordingly.

Note that in the case of the drv260x driver error checking is more
strict now because -ENOSYS is reported to the caller now. But this
should only be returned if GPIOLIB is disabled which shouldn't happen as
the driver depends on GPIOLIB.
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

In addition to defining triggers for VT LED states, let's define triggers
for VT keyboard lock states, such as "kbd-shiftlock", "kbd-altgrlock", etc.

This permits to fix #7063 from userland by using a modifier to implement
proper CapsLock behavior and have the keyboard caps lock led show that
modifier state.
Signed-off-by: NSamuel Thibault <samuel.thibault@ens-lyon.org>
Tested-by: NPavel Machek <pavel@ucw.cz>
Acked-by: NPavel Machek <pavel@ucw.cz>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Now that input core allows controlling keyboards LEDs via standard LED
subsystem triggers let's switch VT keyboard code to make use of this
feature. We will define the following standard triggers: "kbd-scrollock",
"kbd-numlock", "kbd-capslock", and "kbd-kanalock" which are default
triggers for respective LEDs on keyboards.
Signed-off-by: NSamuel Thibault <samuel.thibault@ens-lyon.org>
Tested-by: NPavel Machek <pavel@ucw.cz>
Acked-by: NPavel Machek <pavel@ucw.cz>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

This change creates a new input handler called "leds" that exports LEDs on input
devices as standard LED class devices in sysfs and allows controlling their
state via sysfs or via any of the standard LED triggers. This allows to
re-purpose and reassign LDEs on the keyboards to represent states other
than the standard keyboard states (CapsLock, NumLock, etc).

The old API of controlling input LEDs by writing into /dev/input/eventX
devices is still present and will take precedence over accessing via LEDs
subsystem (i.e. it may override state set by a trigger). If input device is
"grabbed" then requests coming through LED subsystem will be ignored.
Signed-off-by: NSamuel Thibault <samuel.thibault@ens-lyon.org>
Tested-by: NPavel Machek <pavel@ucw.cz>
Acked-by: NPavel Machek <pavel@ucw.cz>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Use kernel.h macro definition.

Thanks to Julia Lawall for Coccinelle scripting support.
Signed-off-by: NFabian Frederick <fabf@skynet.be>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

input_mt_init_slots() will do that for us.
Reviewed-by: NBenjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: NBastien Nocera <hadess@hadess.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Goodix touchscreens export through their registers a Product ID and
Firmware Version. The Product ID is an ASCII encoding of the product name
(e.g.: "911").

Export to sysfs (through the input subsystem) the product id and firmware
version read from the device rather than using constant values.
Signed-off-by: NOctavian Purdila <octavian.purdila@intel.com>
Signed-off-by: NIrina Tirdea <irina.tirdea@intel.com>
Acked-by: NBastien Nocera <hadess@hadess.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Fix sparse warning:

drivers/input/touchscreen/goodix.c:182:26: warning: Variable length array is used.

Replace the variable length array with fixed length.

Some Goodix devices have maximum 5 touch points, while others have 10 touch
points. Using the maximum length (80 bytes) for all devices will lead to
wasting 40 bytes on stack when using devices with maximum 5 touch points.
However, that is preferable to using kmalloc which will use even more
resources.
Signed-off-by: NIrina Tirdea <irina.tirdea@intel.com>
Acked-by: NBastien Nocera <hadess@hadess.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Fix alignment to match open parenthesis detected by running checkpatch.pl
--strict.
Signed-off-by: NIrina Tirdea <irina.tirdea@intel.com>
Acked-by: NBastien Nocera <hadess@hadess.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

This adds OnKey driver support for DA9063.
Signed-off-by: NSteve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>