kernel/linux.git/drivers/platform/x86/surface3_button.c, branch linux-4.20.yLinux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=linux-4.20.y2017-03-16T20:52:12+00:00platform/x86: surface3_button: Propagate error from gpiod_count()2017-03-16T20:52:12+00:00Andy Shevchenkoandriy.shevchenko@linux.intel.com2017-02-20T16:15:48+00:00urn:sha1:562e7a4032d1ff33e283d7ba1d5f10fe7ea96669
Since gpiod_count() does not return 0 anymore, we don't need to shadow
its error code and would safely propagate to the user.
While here, replace second parameter by NULL in order to prevent side
effects on _DSD enabled firmware.
Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
platform/x86: Introduce button support for the Surface 32016-12-16T21:30:26+00:00Benjamin Tissoiresbenjamin.tissoires@redhat.com2016-12-05T15:10:33+00:00urn:sha1:1a64b719d3ae0e4fb939d9a9e31abb60b4ce4eb1
The Surface 3 is not following the ACPI spec for PNP0C40, but nearly.
The device is connected to a I2C device that might have some magic
but we don't know about.
Just create the device after the enumeration and use the declared GPIOs
to provide button support.
This driver is just an adaptation of drivers/input/misc/soc_button_array.c
The Surface Pro 3 is using an ACPI driver and matches against the bid
of the device ("VGBI"). To prevent this incompatible driver to be used
on the Surface Pro, we add a match on the Surface 3 bid "TEV2".
link: https://bugzilla.kernel.org/show_bug.cgi?id=102761
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>