Commit 4ea14a53 ("Input: gpio-keys - report
error when disabling unsupported key") tried let user know that they
attempted to disable an unsupported key, unfortunately the check is wrong
as it believes that all codes are invalid. Fix it by ensuring that keys
that we try to disable are subset of keys (or switches) that device
reports.

Fixes: 4ea14a53 ("Input: gpio-keys - report error when disabling unsupported key")
Reported-by: NIvaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
Tested-by: NIvaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Commit da1f026b ("Keyboard: omap-keypad:
use matrix_keypad.h") switched the driver to use matrix keypad
infrastructure, which made array of keycodes to be unsigned short, and
caused the test for negativity never trigger. This leads to the following
static checker warning:

	drivers/input/keyboard/omap-keypad.c:158 omap_kp_tasklet()
	warn: 'keycodes[]' is never negative.

Given that we did not care about this check for a few years already let's
simply remove it.
Reported-by: NDan Carpenter <dan.carpenter@oracle.com>
Acked-by: NAaro Koskinen <aaro.koskinen@nokia.com>
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Remove write to REG_IRQCLR and REG_IRQWAKEUP in interrupt handler for
IRQENB_HW_PEN as the resume handler should and does clear REG_IRQWAKEUP.
IRQENB_HW_PEN bit is set in irqclr so that all interrupts get cleared
later so let IRQENB_HW_PEN be cleared by that.

Without this patch wakeup events from TSC_ADC do not work because pending
interrupts in TSC_ADC were causing HW_PEN interrupt, needed for wake from
suspend modes, to get disabled immediately by IRQ handler after being
enabled and preventing wake from happening.
Signed-off-by: NDave Gerlach <d-gerlach@ti.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

It feels like we should set the tasklet data before enabling it.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Because of the wrong condition we'd never retry firmware update.
Acked-by: NYoichi Yuasa <yuasa@linux-mips.org>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Merge several improvements to Goodix touchscreen driver:
- power management support
- configuration upload
- axis swapping and inversion

This patch moves v3 pinnacle code for trackstick detection from
alps_hw_init_v3() to alps_set_protocol() so ALPS_DUALPOINT flag can be
cleared before registering trackstick input device in kernel.
Signed-off-by: NPali Rohár <pali.rohar@gmail.com>
Acked-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

This patch adds detection of trackstick for v7 protocol devices. Code in
this patch is used in official Dell touchpad linux drivers for Dell models:
Dell Latitude E5250/5250, E5450/5450, E5550/5550

Detection code and base reg for alps v3 rushmore and v7 devices is exacly
same.

Also user in bug https://bugzilla.kernel.org/show_bug.cgi?id=94801 reported
that Toshiba Sattellite Z30-A-1DG has only alps v7 touchpad device without
trackstick and kernel reports to userspace also redundant trackstick
device.
Signed-off-by: NPali Rohár <pali.rohar@gmail.com>
Reviewed-by: NHans de Goede <hdegoede@redhat.com>
Tested-by: NAlex Hung <alex.hung@canonical.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Use to_delayed_work() instead of open-coding it.
Signed-off-by: NGeliang Tang <geliangtang@163.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

The bma150_cfg structure is never modified, so declare it as const.

Done with the help of Coccinelle.
Signed-off-by: NJulia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

We didn't check input_allocate_device() for failures so it could lead to
a NULL deref.

Fixes: 6b0f8f9c ('Input: add eGalaxTouch serial touchscreen driver')
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Currently the user can set ff_effects_max to zero with the EV_FF bit (and
the FF_GAIN and/or FF_AUTOCENTER bits) set, in this case the uninitialized
methods ff->set_gain and/or ff->set_autocenter can be dereferenced,
resulting in a kernel oops.

Check in uinput_create_device() and print a helpful message and return
-EINVAL in case the check fails.
Signed-off-by: NElias Vanderstuyft <elias.vds@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Rework the uinput ABS validation to check passed absinfo data immediately,
but do ABS initialization as last step in UI_DEV_CREATE. The behavior
observed by user-space is not changed, as ABS initialization was never
checked for errors.

With this in place, the order of device initialization and abs
configuration is no longer fixed. Userspace can initialize the device and
afterwards set absinfo just fine.
Signed-off-by: NDavid Herrmann <dh.herrmann@gmail.com>
Reviewed-by: NBenjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: NBenjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

This adds two new ioctls, UINPUT_DEV_SETUP and UI_ABS_SETUP, that replaces
the old device setup method (by write()'ing "struct uinput_user_dev" to the
node). The old method is not easily extendable and requires huge payloads.
Furthermore, overloading write() without properly versioned objects is
error-prone.

Therefore, we introduce two new ioctls to replace the old method.  These
ioctls support all features of the old method, plus a "resolution" field
for absinfo. Furthermore, it's properly forward-compatible to new ABS codes
and a growing "struct input_absinfo" structure.

UI_ABS_SETUP also allows user-space to skip unknown axes if not set.  There
is no need to copy the whole array temporarily into the kernel, but instead
the caller issues several ioctl where we copy each value manually.
Signed-off-by: NDavid Herrmann <dh.herrmann@gmail.com>
Signed-off-by: NBenjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: NDavid Herrmann <dh.herrmann@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

The goodix touchscreen driver uses a "rotated_screen" flag for
systems on which the touchscreen is mounted rotated by 180
degrees with respect to the display.  With the addition of
support for the dt properties "touchscreen-inverted-x" and
"touchscreen-inverted-y", a separate "rotated_screen" flag
is not necessary anymore. This patch replaces it by setting
the inverted_x and inverted_y flags instead.
Signed-off-by: NKarsten Merker <merker@debian.org>
Reviewed-by: NIrina Tirdea <irina.tirdea@intel.com>
Tested-by: NBastien Nocera <hadess@hadess.net>
Acked-by: NBastien Nocera <hadess@hadess.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Implement support for the following device-tree and ACPI 5.1 DSD
properties in the goodix touchscreen driver:

 - touchscreen-inverted-x:  X axis is inverted (boolean)
 - touchscreen-inverted-y:  Y axis is inverted (boolean)
 - touchscreen-swapped-x-y: X and Y axis are swapped (boolean)

These are necessary on tablets which have a display in portrait
format while the touchscreen is in landscape format, such as e.g.
the MSI Primo 81.
Signed-off-by: NKarsten Merker <merker@debian.org>
Tested-by: NBastien Nocera <hadess@hadess.net>
Tested-by: Irina Tirdea <irina.tirdea@intel.com> (with ACPI DSD properties)
Tested-by: Aleksei Mamlin <mamlinav@gmail.com> (with device-tree properties)
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Use goodix_i2c_write_u8 instead of i2c_master_send to simplify code.
Signed-off-by: NIrina Tirdea <irina.tirdea@intel.com>
Tested-by: NBastien Nocera <hadess@hadess.net>
Tested-by: NAleksei Mamlin <mamlinav@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Implement suspend/resume for goodix driver.

The suspend and resume process uses the gpio pins.  If the device ACPI/DT
information does not declare gpio pins, suspend/resume will not be
available for these devices.

This is based on Goodix datasheets for GT911 and GT9271 and on Goodix
driver gt9xx.c for Android (publicly available in Android kernel trees for
various devices).
Signed-off-by: NOctavian Purdila <octavian.purdila@intel.com>
Signed-off-by: NIrina Tirdea <irina.tirdea@intel.com>
Tested-by: NBastien Nocera <hadess@hadess.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Goodix devices can be configured by writing custom data to the device at
init. The configuration data is read with request_firmware from
"goodix_<id>_cfg.bin", where <id> is the product id read from the device
(e.g.: goodix_911_cfg.bin for Goodix GT911, goodix_9271_cfg.bin for
GT9271).

The configuration information has a specific format described in the Goodix
datasheet. It includes X/Y resolution, maximum supported touch points,
interrupt flags, various sensitivity factors and settings for advanced
features (like gesture recognition).

Before writing the firmware, it is necessary to reset the device. If
the device ACPI/DT information does not declare gpio pins (needed for
reset), writing the firmware will not be available for these devices.

This is based on Goodix datasheets for GT911 and GT9271 and on Goodix
driver gt9xx.c for Android (publicly available in Android kernel
trees for various devices).
Signed-off-by: NOctavian Purdila <octavian.purdila@intel.com>
Signed-off-by: NIrina Tirdea <irina.tirdea@intel.com>
Tested-by: NBastien Nocera <hadess@hadess.net>
Tested-by: NAleksei Mamlin <mamlinav@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

After power on, it is recommended that the driver resets the device.
The reset procedure timing is described in the datasheet and is used
at device init (before writing device configuration) and
for power management. It is a sequence of setting the interrupt
and reset pins high/low at specific timing intervals. This procedure
also includes setting the slave address to the one specified in the
ACPI/device tree.

This is based on Goodix datasheets for GT911 and GT9271 and on Goodix
driver gt9xx.c for Android (publicly available in Android kernel
trees for various devices).

For reset the driver needs to control the interrupt and
reset gpio pins (configured through ACPI/device tree). For devices
that do not have the gpio pins properly declared, the functionality
depending on these pins will not be available, but the device can still
be used with basic functionality.

For both device tree and ACPI, the interrupt gpio pin configuration is
read from the "irq-gpios" property and the reset pin configuration is
read from the "reset-gpios" property. For ACPI 5.1, named properties
can be specified using the _DSD section. This functionality will not be
available for devices that use indexed gpio pins declared in the _CRS
section (we need to provide backward compatibility with devices
that do not support using the interrupt gpio pin as output).

For ACPI, the pins can be specified using ACPI 5.1:
Device (STAC)
{
    Name (_HID, "GDIX1001")
    ...

    Method (_CRS, 0, Serialized)
    {
        Name (RBUF, ResourceTemplate ()
        {
            I2cSerialBus (0x0014, ControllerInitiated, 0x00061A80,
                AddressingMode7Bit, "\\I2C0",
                0x00, ResourceConsumer, ,
                )

            GpioInt (Edge, ActiveHigh, Exclusive, PullNone, 0x0000,
                "\\I2C0", 0x00, ResourceConsumer, ,
                 )
                 {   // Pin list
                     0
                 }

            GpioIo (Exclusive, PullDown, 0x0000, 0x0000,
                IoRestrictionOutputOnly, "\\I2C0", 0x00,
                ResourceConsumer, ,
                )
                {
                     1
                }
        })
        Return (RBUF)
    }

    Name (_DSD,  Package ()
    {
        ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
        Package ()
        {
            Package (2) {"irq-gpios", Package() {^STAC, 0, 0, 0 }},
            Package (2) {"reset-gpios", Package() {^STAC, 1, 0, 0 }},
            ...
        }
    }
Signed-off-by: NOctavian Purdila <octavian.purdila@intel.com>
Signed-off-by: NIrina Tirdea <irina.tirdea@intel.com>
Acked-by: NRob Herring <robh@kernel.org>
Acked-by: NBastien Nocera <hadess@hadess.net>
Tested-by: NBastien Nocera <hadess@hadess.net>
Tested-by: NAleksei Mamlin <mamlinav@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Each of the Goodix devices supported by this driver has a fixed size for
the configuration information registers. The size varies depending on the
device and is specified in the datasheet.

Use the proper configuration length as specified in the datasheet for
each device model, so we do not read more than the actual size of the
configuration registers.
Signed-off-by: NIrina Tirdea <irina.tirdea@intel.com>
Acked-by: NBastien Nocera <hadess@hadess.net>
Tested-by: NBastien Nocera <hadess@hadess.net>
Tested-by: NAleksei Mamlin <mamlinav@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Bring in changes to limit number of protocols we try on pass-though PS/2
ports so that probe ocmpletes faster.

This makes Logitech PS2++ protocol implementation consistent with
the naming in other protocols. Also mark the stub as "static inline"
Reviewed-by: NHans de Goede <hdegoede@redhat.com>
Tested-by: NMarcin Sochacki <msochacki+kernel@gmail.com>
Tested-by: NTill <till2.schaefer@uni-dortmund.de>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

PS/2 protocol is slow, and using it with pass-through port (where we
encapsulate PS/2 into PS/2) is slower yet so it takes quite a bit of time
to do full protocol discovery for device attached to a pass-through port.
However, so far we have not see anything but trackpoints or basic PS/2
mice on pass-through ports, so let's limit protocols that we probe there
to Trackpoint, IntelliMouse Explorer, IntelliMouse, and bare PS/2 protocol,
and avoid other extended protocols, such as Synaptics, ALPS, etc.
Reviewed-by: NHans de Goede <hdegoede@redhat.com>
Reviewed-by: NPali Rohár <pali.rohar@gmail.com>
Tested-by: NMarcin Sochacki <msochacki+kernel@gmail.com>
Tested-by: NTill <till2.schaefer@uni-dortmund.de>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

In preparation of limiting protocols that we try on pass-through ports,
let's rework initialization code and factor common code into
psmouse_try_protocol() that accepts protocol type (instead of detec()
function pointer) and can, for most protocols, perform both detection and
initialization.

Note that this removes option of forcing Lifebook protocol on devices that
are not recognized by lifebook_detect() as having the hardware, but I do
not recall anyone using this option.
Reviewed-by: NHans de Goede <hdegoede@redhat.com>
Tested-by: NMarcin Sochacki <msochacki+kernel@gmail.com>
Tested-by: NTill <till2.schaefer@uni-dortmund.de>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

We move protocol descriptions and psmouse_find_by_type() and
pmouse_find_by_name() so that we can use them without forward declarations
in the subsequent patches.
Reviewed-by: NHans de Goede <hdegoede@redhat.com>
Reviewed-by: NPali Rohár <pali.rohar@gmail.com>
Tested-by: NMarcin Sochacki <msochacki+kernel@gmail.com>
Tested-by: NTill <till2.schaefer@uni-dortmund.de>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

When Cypress protocol support is disabled cypress_init() is a stub that
always returns -ENOSYS, so there is not point in testing for
CONFIG_MOUSE_PS2_CYPRESS after we decided that we are dealing with a
Cypress device. Also, we should only be calling cypress_detect() when
set_properties argument is "true", like with other protocols.

There is a slight change in behavior to make follow-up patches more
uniform: when we detect Cypress but its initialization fails, instead of
immediately returning PSMOUSE_PS2 protocol we now continue trying
IntelliMouse [Explorer]. Given that Cypress devices only have issue with
Sentelic probes probing Imtellimouse should be safe.
Reviewed-by: NHans de Goede <hdegoede@redhat.com>
Tested-by: NMarcin Sochacki <msochacki+kernel@gmail.com>
Tested-by: NTill <till2.schaefer@uni-dortmund.de>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

The fact that we were calling focaltech_init() even when Focaltech support
is disabled was confusing. Rearrange the code so that if support is
disabled we continue to fall through the rest of protocol probing code
until we get to full reset that Focaltech devices need to work properly.

Also, replace focaltech_init() with a stub now that it is only called when
protocol is enabled.
Reviewed-by: NHans de Goede <hdegoede@redhat.com>
Reviewed-by: NPali Rohár <pali.rohar@gmail.com>
Tested-by: NMarcin Sochacki <msochacki+kernel@gmail.com>
Tested-by: NTill <till2.schaefer@uni-dortmund.de>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

The module was using non-standard comment style with comment blocks often
starting at the very beginning of a line instead of being aligned with the
code. Let's switch to standard formatting.
Reviewed-by: NHans de Goede <hdegoede@redhat.com>
Reviewed-by: NPali Rohár <pali.rohar@gmail.com>
Tested-by: NMarcin Sochacki <msochacki+kernel@gmail.com>
Tested-by: NTill <till2.schaefer@uni-dortmund.de>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Instead of a series mostly exclusive "if" statements testing protocol type
of the mouse let's use "switch" statement.
Reviewed-by: NHans de Goede <hdegoede@redhat.com>
Reviewed-by: NPali Rohár <pali.rohar@gmail.com>
Tested-by: NMarcin Sochacki <msochacki+kernel@gmail.com>
Tested-by: NTill <till2.schaefer@uni-dortmund.de>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

On this board, the touchscreen, an ads7843, is not handled directly by
Linux but by a companion FPGA. This FPGA is memory-mapped and the IP
design is very similar to the mk712.

This commit adds the support for this IP.
Signed-off-by: NDamien Riegel <damien.riegel@savoirfairelinux.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

There are two EETI touchscreen drivers in the kernel (eeti_ts and
egalax_ts) but both are for I2C-connected panels. This is for a different,
serial and not multi-touch touchscreen panel. The protocol documentation is
at http://www.eeti.com.tw/pdf/Software%20Programming%20Guide_v2.0.pdfSigned-off-by: NBöszörményi Zoltán <zboszor@pr.hu>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Merge branch 'for-dmitry' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio into goodix

Bring in changes to ACPI GPIOLIB to better handle legacy ACPI mappings
needed for subsequent Goodix driver changes.

Jan Stancek reported that I wrecked things for him by fixing things for
Vladimir :/

His report was due to an UNINTERRUPTIBLE wait getting -EINTR, which
should not be possible, however my previous patch made this possible by
unconditionally checking signal_pending().

We cannot use current->state as was done previously, because the
instruction after the store to that variable it can be changed.  We must
instead pass the initial state along and use that.

Fixes: 68985633 ("sched/wait: Fix signal handling in bit wait helpers")
Reported-by: NJan Stancek <jstancek@redhat.com>
Reported-by: NChris Mason <clm@fb.com>
Tested-by: NJan Stancek <jstancek@redhat.com>
Tested-by: NVladimir Murzin <vladimir.murzin@arm.com>
Tested-by: NChris Mason <clm@fb.com>
Reviewed-by: NPaul Turner <pjt@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: tglx@linutronix.de
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: hpa@zytor.com
Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Pull NFS client bugfix from Trond Myklebust:
 "SUNRPC: Fix a NFSv4.1 callback channel regression"

* tag 'nfs-for-4.4-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  SUNRPC: Fix callback channel

Pull timer fixlets from Thomas Gleixner:
 "Two trivial fixes which add missing header fileas and forward
  declarations so the code will compile even when the magic include
  chains are different"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/gic-v3: Add missing include for barrier.h
  irqchip/gic-v3: Add missing struct device_node declaration

Pull timer fix from Thomas Gleixner:
 "A single fix to unbreak a clocksource driver which has more than 32bit
  counter width"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource: Mmio: remove artificial 32bit limitation

Pull fpga driver fixes from Greg KH:
 "Only two small fpga driver fixes here, both have been in linux-next
  for a while, and resolve some reported issues"

* tag 'char-misc-4.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  fpga manager: Fix firmware resource leak on error
  fpga manager: remove label

Pull staging driver fixes from Greg KH:
 "Here are a few staging and IIO driver fixes for 4.4-rc5.

  All of them resolve reported problems and have been in linux-next for
  a while.  Nothing major here, just small fixes where needed"

* tag 'staging-4.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: lustre: echo_copy.._lsm() dereferences userland pointers directly
  iio: adc: spmi-vadc: add missing of_node_put
  iio: fix some warning messages
  iio: light: apds9960: correct ->last_busy count
  iio: lidar: return -EINVAL on invalid signal
  staging: iio: dummy: complete IIO events delivery to userspace