Nobody calls input_get_drvdata() so setting it is not required.
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

The "atomic" API allows us to configure PWM period and duty cycle and
enable it in one call.
Reviewed-by: NThierry Reding <thierry.reding@gmail.com>
Tested-by: NDavid Lechner <david@lechnology.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

This adds an optional regulator to the pwm-beeper device. This regulator
acts as an amplifier. The amplifier is only enabled while beeping in order
to reduce power consumption.

Tested on LEGO MINDSTORMS EV3, which has a speaker connected to PWM through
an amplifier.
Signed-off-by: NDavid Lechner <david@lechnology.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

This suppress printing an error message when pwm_get returns -EPROBE_DEFER.
Otherwise you get a bunch of noise in the kernel log.
Signed-off-by: NDavid Lechner <david@lechnology.com>
Reviewed-by: NThierry Reding <thierry.reding@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Usually userspace sends SND_BELL and SND_TONE events, and by the time
pwm_beeper_suspend() runs userpsace is already frozen, but theoretically
in-kernel users may send these events too, and that may cause
pwm_beeper_event() scheduling another work after we canceled it.

Let's introduce a "suspended" flag and check it in pwm_beeper_event() to
avoid this race.
Reviewed-by: NThierry Reding <thierry.reding@gmail.com>
Tested-by: NDavid Lechner <david@lechnology.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Instead of manipulating capability bits directly, let's use
input_set_capability() API.
Reviewed-by: NThierry Reding <thierry.reding@gmail.com>
Tested-by: NDavid Lechner <david@lechnology.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Use of managed resources (devm) simplifies error handling and tear down
of the driver.
Reviewed-by: NThierry Reding <thierry.reding@gmail.com>
Tested-by: NDavid Lechner <david@lechnology.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

There are no more users of pwm-beeper driver in mainline relying on
this legacy API, so let's remove it and simplify the driver code.
Acked-by: NThierry Reding <thierry.reding@gmail.com>
Tested-by: NDavid Lechner <david@lechnology.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Empty remove functions don't serve a useful purpose and can be removed.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Calling device_init_wakeup in the remove function is unnecessary since the
device is going away, and thus won't be able to cause any wakeups under any
circumstances. Besides, the driver cleanup code already handles the
necessary cleanup.

Similarly, disabling wakeup in the probe error path is unnecessary, as is
disabling wakeup in the probe function in the first place.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Calling device_init_wakeup in the remove function is unnecessary since the
device is going away, and thus won't be able to cause any wakeups under any
circumstances. Besides, the driver cleanup code already handles the
necessary cleanup.

Similarly, disabling wakeup in the probe error path is unnecessary, as is
disabling wakeup in the probe function in the first place.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Calling device_init_wakeup in the remove function is unnecessary since the
device is going away, and thus won't be able to cause any wakeups under any
circumstances. Besides, the driver cleanup code already handles the
necessary cleanup.

Similarly, disabling wakeup in the probe error path is unnecessary, as is
disabling wakeup in the probe function in the first place.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Calling device_init_wakeup in the remove function is unnecessary since the
device is going away, and thus won't be able to cause any wakeups under any
circumstances. Besides, the driver cleanup code already handles the
necessary cleanup.

Similarly, disabling wakeup in the probe error path is unnecessary, as is
disabling wakeup in the probe function in the first place.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

If a function declares a variable to access a structure element,
use it consistently.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

If a function declares a variable to access a structure element,
use it consistently.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

If a function declares a variable to access a structure element,
use it consistently.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

If a function declares a variable to access a structure element,
use it consistently.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

There is no call to i2c_get_clientdata(), platform_get_drvdata(),
or dev_get_drvdata() in any of the drivers in this patch.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

There is no call to i2c_get_clientdata(), platform_get_drvdata(),
or dev_get_drvdata() in any of the drivers in this patch.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

There is no call to i2c_get_clientdata(), platform_get_drvdata(),
or dev_get_drvdata() in any of the drivers in this patch.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

gpio-keys input devices created by the soc_button_array driver are
configured with key-codes based on ACPI provided information.

Unfortunately on some tablets this info is wrong, and we need to have
a quirk to fix things up.

Add support for input_setkeycode to the gpio-keys driver, so that
the existing udev hwdb mechanism can be used to fix things up on these
tablets.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

The soc_button_array driver was initializing (kzalloc) the
debounce_interval value to 0, leading to no debouncing at all,
while the buttons are simple mechanical switches.

This commit sets debounce_interval to 50ms to avoid spurious button
press reports both on press and release of the button. Note 50ms may
seem like a lot but soc_button_array is typically used with cheap
tablets, with not so great buttons. I tried 10ms on my tablet and it
is not enough, where as 50ms works well.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

This patch adds support for the TM2 touch key and led functionality.

The driver interfaces with userspace through an input device and reports
KEY_PHONE and KEY_BACK event types. LED brightness can be controlled by
"/sys/class/leds/tm2-touchkey/brightness".
Signed-off-by: NBeomho Seo <beomho.seo@samsung.com>
Signed-off-by: NJaechul Lee <jcsing.lee@samsung.com>
Reviewed-by: NJavier Martinez Canillas <javier@osg.samsung.com>
Reviewed-by: NAndi Shyti <andi.shyti@samsung.com>
Reviewed-by: NChanwoo Choi <cw00.choi@samsung.com>
Tested-by: NChanwoo Choi <cw00.choi@samsung.com>
Acked-by: NKrzysztof Kozlowski <krzk@kernel.org>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

There is no call to i2c_get_clientdata() or dev_get_drvdata().
Drop the unnecessary call to i2c_set_clientdata().
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

There is no call to platform_get_drvdata() or dev_get_drvdata().
Drop the unnecessary call to platform_set_drvdata().
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

There is no call to platform_get_drvdata() or dev_get_drvdata().
Drop the unnecessary call to platform_set_drvdata().
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

There is no call to platform_get_drvdata() or dev_get_drvdata().
Drop the unnecessary call to platform_set_drvdata().
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

There is no call to platform_get_drvdata() or dev_get_drvdata().
Drop the unnecessary call to platform_set_drvdata().

Also use existing variable 'dev' instead of dereferencing it several times.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Use local variable 'dev' instead of dereferencing it several times.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

There is no call to i2c_get_clientdata() or dev_get_drvdata().
Drop the unnecessary call to i2c_set_clientdata().
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

There is no call to platform_get_drvdata() or dev_get_drvdata().
Drop the unnecessary call to platform_set_drvdata().
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Use local variable 'dev' instead of dereferencing it several times and
replace devm_add_action() and manual error handling with
devm_add_action_or_reset().
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Replace 'goto l; ... l: return e;' with 'return e;'
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Error messages after memory allocation failures are unnecessary and
can be dropped, especially give that they were emitted as dev_dbg() so
noone except person actively debugging the driver would see them.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

There is no call to i2c_get_clientdata() or dev_get_drvdata().
Drop the unnecessary call to i2c_set_clientdata().
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Use local variable 'dev' instead of dereferencing it several times.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Error messages after memory allocation failures are unnecessary and
can be dropped, given that they are emitted as dev_dbg() so nobody except
person actively debugging the driver would see them.

Also replace jump to return 'goto l; ... l: return e;' with 'return e;'
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

There is no call to platform_get_drvdata() or dev_get_drvdata().
Drop the unnecessary call to dev_set_drvdata().
Other relevant changes:
  Use existing variable 'dev' instead of dereferencing it several times

This conversion was done automatically with coccinelle using the
following semantic patches. The semantic patches and the scripts
used to generate this commit log are available at
https://github.com/groeck/coccinelle-patches

- Drop dev_set_drvdata()
- Use local variable 'struct device *dev' consistently
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

The TCA8418 might be used using different interrupt triggers on various
boards. This is not working so far because the current code forces a
falling edge trigger.

The device tree already provides a trigger type, so let's use whatever it
sets up, and since we can be loaded without DT, keep the old behaviour for
the non-DT case.
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

ulseep_range() uses hrtimers and provides no advantage over msleep()
for larger delays. Fix up the 50ms delays here to use msleep() and
reduce the load on the hrtimer subsystem.
Signed-off-by: NNicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>