SNVS IRQ is requested before necessary driver data initialized,
if there is a pending IRQ during driver probe phase, kernel
NULL pointer panic will occur in IRQ handler. To avoid such
scenario, just initialize necessary driver data before enabling
IRQ. This patch is inspired by NXP's internal kernel tree.

Fixes: d3dc6e23 ("input: keyboard: imx: add snvs power key driver")
Signed-off-by: NAnson Huang <Anson.Huang@nxp.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

According to HUT 1.12 usage 0xb5 from the generic desktop page is reserved
for switching between external and internal display, so let's add the
mapping.
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

According to HUT 1.12 usage 0x232 from the consumer page is reserved for
switching application between full screen and windowed mode, so let's add
the mapping.
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

According to HUTRR73 usages 0x79, 0x7a and 0x7c from the consumer page
correspond to Brightness Up/Down/Toggle keys, so let's add the mappings.
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

According to HUTRR77 usage 0x29f from the consumer page is reserved for
the Desktop application to present all running user’s application windows.
Linux defines KEY_SCALE to request Compiz Scale (Expose) mode, so let's
add the mapping.
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

According to HUTRR37 usage 0x6d from the consumer usage page corresponds
to action that selects the next available supported aspect ratio option
on a device which outputs or displays video. However KEY_ZOOM means
activate "Full Screen" mode, KEY_ASPECT_RATIO should be used instead.
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

We defined better names for keys to activate full screen mode or
change aspect ratio (while keeping the existing keycodes to avoid
breaking userspace), so let's use them in the document.
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

It is hard to say what KEY_SCREEN and KEY_ZOOM mean, but historically DVB
folks have used them to indicate switch to full screen mode. Later, they
converged on using KEY_ZOOM to switch into full screen mode and KEY)SCREEN
to control aspect ratio (see Documentation/media/uapi/rc/rc-tables.rst).

Let's commit to these uses, and define:

- KEY_FULL_SCREEN (and make KEY_ZOOM its alias)
- KEY_ASPECT_RATIO (and make KEY_SCREEN its alias)
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

There are many Lenovo laptops which need elan_i2c support, this patch adds
relevant IDs to the Elan driver so that touchpads are recognized.
Signed-off-by: NKT Liao <kt.liao@emc.com.tw>
Cc: stable@vger.kernel.org
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Tablet initially begins communicating at 9600 baud, so this command
should be used to connect to the device:

    $ inputattach --daemon --baud 9600 --wacom_iv /dev/ttyS0

https://github.com/linuxwacom/xf86-input-wacom/issues/40Signed-off-by: NJason Gerecke <jason.gerecke@wacom.com>
Cc: stable@vger.kernel.org
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Lenovo s21e-20 uses ELAN0601 in its ACPI tables for the Elan touchpad.
Signed-off-by: NVincent Batts <vbatts@hashbangbash.com>
Cc: stable@vger.kernel.org
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

When CONFIG_INPUT_POLLDEV is disabled, we get a link error:

drivers/input/touchscreen/raspberrypi-ts.o: In function `rpi_ts_probe':
raspberrypi-ts.c:(.text+0xec): undefined reference to `devm_input_allocate_polled_device'
raspberrypi-ts.c:(.text+0xec): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `devm_input_allocate_polled_device'
raspberrypi-ts.c:(.text+0x19c): undefined reference to `input_register_polled_device'
raspberrypi-ts.c:(.text+0x19c): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `input_register_polled_device'

Select that symbol like we do from the other similar drivers.

Fixes: 0b9f28fe ("Input: add official Raspberry Pi's touchscreen driver")
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Reviewed-by: NNicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

When CONFIG_GPIOLIB is not set, we get a couple of build
errors during test building:

drivers/input/misc/msm-vibrator.c: In function 'msm_vibrator_start':
drivers/input/misc/msm-vibrator.c:79:3: error: implicit declaration of function 'gpiod_set_value_cansleep'; did you mean 'gpio_set_value_cansleep'? [-Werror=implicit-function-declaration]
   gpiod_set_value_cansleep(vibrator->enable_gpio, 1);
   ^~~~~~~~~~~~~~~~~~~~~~~~
   gpio_set_value_cansleep
drivers/input/misc/msm-vibrator.c: In function 'msm_vibrator_probe':
drivers/input/misc/msm-vibrator.c:176:26: error: implicit declaration of function 'devm_gpiod_get'; did you mean 'devm_gpio_free'? [-Werror=implicit-function-declaration]
  vibrator->enable_gpio = devm_gpiod_get(&pdev->dev, "enable",
                          ^~~~~~~~~~~~~~
                          devm_gpio_free
drivers/input/misc/msm-vibrator.c:177:13: error: 'GPIOD_OUT_LOW' undeclared (first use in this function); did you mean 'GPIOF_INIT_LOW'?
             GPIOD_OUT_LOW);
             ^~~~~~~~~~~~~
             GPIOF_INIT_LOW
drivers/input/misc/msm-vibrator.c:177:13: note: each undeclared identifier is reported only once for each function it appears in

This is easy to avoid when we use gpio/consumer.h as the documented interface.

Fixes: 0f681d09 ("Input: add new vibrator driver for various MSM SOCs")
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Prepare input updates for 5.1 merge window.

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/input/touchscreen/ti_am335x_tsc.c: In function 'titsc_suspend':
drivers/input/touchscreen/ti_am335x_tsc.c:510:24: warning:
 variable 'tscadc_dev' set but not used [-Wunused-but-set-variable]

drivers/input/touchscreen/ti_am335x_tsc.c: In function 'titsc_resume':
drivers/input/touchscreen/ti_am335x_tsc.c:527:24: warning:
 variable 'tscadc_dev' set but not used [-Wunused-but-set-variable]

It's not used any more after 333e07ec ("Input: ti_am335x_tsc: Mark TSC
device as wakeup source")
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Convert string compares of DT node names to use of_node_name_eq helper
instead. For the root node on SUN DT, we need to retrieve the 'name'
property as it is the rare case where the 'name' property and node name
differ. With both changes, it removes direct access to the node name
pointer.

While at it, convert the open coded loop to use for_each_child_of_node().
Signed-off-by: NRob Herring <robh@kernel.org>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

"Invalid config" gives little idea what's wrong. Print the values that
must not be 0 so we know which ones are off.
Signed-off-by: NGuido Günther <agx@sigxcpu.org>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Refer to touchscreen.txt for generic touch properties. This avoids
duplication and we're using the generic code to parse these in the
driver. While at that add touchscreen-size-{x,y} which are respected by
the driver as well.
Signed-off-by: NGuido Günther <agx@sigxcpu.org>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

From what I've seen in vendor trees it's fine to treat this as gt1x¹.
Tested on the Purism Librem 5 Devkit (Rocktech JH057N00900 panel).

[1]: https://github.com/TadiT7/android_kernel_mtk-4.4/tree/master/drivers/input/touchscreen/mediatek/GT5688Signed-off-by: NGuido Günther <agx@sigxcpu.org>
Reviewed-by: NBastien Nocera <hadess@hadess.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Remove a leftover spinlock.

This was required back when mod_delayed_work() did not exist, and had to
be implemented with a cancel + queue. See commit e7c2f967
("workqueue: use mod_delayed_work() instead of __cancel + queue")

schedule_delayed_work() and mod_delayed_work() can now be used
concurrently. So the spinlock is no longer needed.
Signed-off-by: NSven Van Asbroeck <TheSven73@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

This adds ELAN0617 to the ACPI table to support Elan touchpad found in
Lenovo V330-15ISK.
Signed-off-by: NMauro Ciancio <mauro@acadeu.com>
Cc: stable@vger.kernel.org
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

This patch fixes the following static checker warning:

drivers/input/keyboard/st-keyscan.c:156 keyscan_probe()
error: potential zalloc NULL dereference: 'keypad_data->input_dev'
Reported-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NGabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Now that LEDs core allows "blocking" flavor of "set brightness" method we
can use it and get rid of private work item. As a bonus, we are no longer
forgetting to cancel it when we unbind the driver.
Reviewed-by: NSven Van Asbroeck <TheSven73@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

In preparation to enabling -Wimplicit-fallthrough, mark switch
cases where we are expecting to fall through.

This patch fixes the following warning:

drivers/input/joystick/db9.c: In function ‘db9_saturn_read_packet’:
drivers/input/joystick/db9.c:256:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
   if (tmp == 0xff) {
      ^
drivers/input/joystick/db9.c:263:2: note: here
  default:
  ^~~~~~~

Notice that, in this particular case, the code comment is modified
in accordance with what GCC is expecting to find.

This patch is part of the ongoing efforts to enable
-Wimplicit-fallthrough.
Signed-off-by: NGustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Remove a spinlock which prevents schedule_delayed_work() and
mod_delayed_work() from executing concurrently.

This was required back when mod_delayed_work() did not exist,
and had to be implemented with a cancel + schedule. See
commit e7c2f967 ("workqueue: use mod_delayed_work() instead of
__cancel + queue")

schedule_delayed_work() and mod_delayed_work() can now be used
concurrently. So the spinlock is no longer needed.
Signed-off-by: NSven Van Asbroeck <TheSven73@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

This is required to specify generic touchscreen properties via DT.
Signed-off-by: NMatthias Fend <matthias.fend@wolfvision.net>
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Now that LEDs core allows "blocking" flavor of "set brightness" method we
can use it and get rid of private work item.
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Use devm_gpiod_get_optional() and gpiod_set_value_cansleep() instead
of the old API. The st1232_ts_power() now passes on the inverted "poweron"
value to reflect the correct logical value.
Signed-off-by: NMartin Kepplinger <martin.kepplinger@ginzinger.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

This reverts commit 7db54c89 as it
breaks Acer Aspire V-371 and other devices. According to Elan:

"Acer Aspire F5-573G is MS Precision touchpad which should use hid
 multitouch driver. ELAN0501 should not be added in elan_i2c."

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=202503
Cc: stable@vger.kernel.org
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Now that LEDs core allows "blocking" flavor of "set brightness" method we
can use it and get rid of private work items.
Reviewed-by: NSven Van Asbroeck <TheSven73@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

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: NMarek Vasut <marex@denx.de>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

The PTR_ERR(NULL) value is zero and it's not useful to print that.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

We should be using flush_delayed_work() instead of flush_work() in
matrix_keypad_stop() to ensure that we are not missing work that is
scheduled but not yet put in the workqueue (i.e. its delay timer has not
expired yet).
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

To ensure that TX work is not running after serio port has been torn down,
let's flush it when closing the port.
Reported-by: NSven Van Asbroeck <thesven73@gmail.com>
Acked-by: NDanilo Krummrich <danilokrummrich@dk-develop.de>
Reviewed-by: NSven Van Asbroeck <TheSven73@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Updating LED state requires access to regmap and therefore we may sleep,
so we could not do that directly form set_brightness() method.
Historically we used private work to adjust the brightness, but with the
introduction of set_brightness_blocking() we no longer need it.

As a bonus, not having our own work item means we do not have
use-after-free issue as we neglected to cancel outstanding work on
driver unbind.
Reported-by: NSven Van Asbroeck <thesven73@gmail.com>
Reviewed-by: NSven Van Asbroeck <TheSven73@googlemail.com>
Acked-by: NJacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Like Fujitsu CELSIUS H760, the H780 also has a three-button Elantech
touchpad, but the driver needs to be told so to enable the middle touchpad
button.

The elantech_dmi_force_crc_enabled quirk was not necessary with the H780.

Also document the fw_version and caps values detected for both H760 and
H780 models.
Signed-off-by: NMatti Kurkela <Matti.Kurkela@iki.fi>
Cc: stable@vger.kernel.org
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

We need to access I2C bus when switching brightness, and that may block,
therefore we have to set stmfts_brightness_set() as LED's
brightness_set_blocking() method.

Fixes: 72d1f234 ("Input: tm2-touchkey - add touchkey driver support for TM2")
Acked-by: NAndi Shyti <andi@etezian.org>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

We need to turn regulators on and off when switching brightness, and
that may block, therefore we have to set stmfts_brightness_set() as
LED's brightness_set_blocking() method.

Fixes: 78bcac7b ("Input: add support for the STMicroelectronics FingerTip touchscreen")
Acked-by: NAndi Shyti <andi@etezian.org>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

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: NDmitry Torokhov <dmitry.torokhov@gmail.com>

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: NMarek Vasut <marex@denx.de>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>