Input: cpcap-pwrbutton - replace GPLv2 boilerplate with SPDX

Replace the GPLv2 boilerplate text with a nice and short
SPDX header.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
Link: https://lore.kernel.org/r/20230705212231.631525-1-sre@kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Input: cpcap-pwrbutton - remove initial kernel-doc notation

Change the beginning "/**" in the file to "/*" since it is not a
kernel-doc comment. This prevents a kernel-doc warning:

drivers/input/misc/cpcap-pwrbutton.c:2: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* CPCAP Power Button Input Driver

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20230703230005.14877-1-rdunlap@infradead.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Input: cpcap-pwrbutton - do not set input parent explicitly

We are using devm_input_allocate_device() that already sets parent
of the input device, there is no need to do that again.

Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/YWpiZqrfC9+GQsM4@google.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Input: cpcap-pwrbutton - handle errors from platform_get_irq()

The function cpcap_power_button_probe() does not perform
sufficient error checking after executing platform_get_irq(),
thus fix it.

Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
Link: https://lore.kernel.org/r/20210802121740.8700-1-tangbin@cmss.chinamobile.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

input: cpcap-pwrbutton: New driver

Motorola CPCAP is a PMIC found in multiple smartphones.
This driver adds support for the power/on button and has
been tested in Droid 4.

Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>