[PATCHv2 0/7] Support inhibiting input devices

Andrzej Pietrasiewicz
2020-05-15T16:49:53Z

Userspace might want to implement a policy to temporarily disregard input
from certain devices, including not treating them as wakeup sources.

An example use case is a laptop, whose keyboard can be folded under the
screen to create tablet-like experience. The user then must hold the laptop
in such a way that it is difficult to avoid pressing the keyboard keys. It
is therefore desirable to temporarily disregard input from the keyboard,
until it is folded back. This obviously is a policy which should be kept
out of the kernel, but the kernel must provide suitable means to implement
such a policy.

Due to interactions with suspend/resume, a helper has been added for drivers
to decide if the device is being used or not (PATCH 1/7) and it has been
applied to relevant drivers (PATCH 2-5/7). Patches 2-5 are only being sent
to relevant mailing lists and maintainers.

PATCH 6/7 adds support for inhibiting input devices, while PATCH 7/7
provides an example how to convert a driver to take advantage of this
new feature. Patch 7/7 is only being sent to input mailing list and
maintainer.

This work is inspired by:

https://chromium.googlesource.com/chromiumos/third_party/kernel/+/45c2d7bb398f74adfae0017e20b224152fde3822

and

https://chromium.googlesource.com/chromiumos/third_party/kernel/+/4ce0e8a3697edb8fd071110b3af65014512061c7

v1..v2:
- added input_device_enabled() helper and used it in drivers (Dmitry)
- the fact of open() and close() being called in inhibit/uninhibit paths has
been emphasized in the commit message of PATCH 6/7 (Dmitry)

Andrzej Pietrasiewicz (5):
Input: add input_device_enabled()
Input: use input_device_enabled()
ACPI: button: Use input_device_enabled() helper
iio: adc: exynos: Use input_device_enabled()
platform/x86: thinkpad_acpi: Use input_device_enabled()

Dmitry Torokhov (1):
Input: elan_i2c: Support inhibiting

Patrik Fimml (1):
Input: Add "inhibited" property

drivers/acpi/button.c | 8 +-
drivers/iio/adc/exynos_adc.c | 11 +-
drivers/input/input.c | 142 ++++++++++++++++++--
drivers/input/joystick/xpad.c | 4 +-
drivers/input/keyboard/ep93xx_keypad.c | 2 +-
drivers/input/keyboard/gpio_keys.c | 4 +-
drivers/input/keyboard/imx_keypad.c | 4 +-
drivers/input/keyboard/ipaq-micro-keys.c | 2 +-
drivers/input/keyboard/lpc32xx-keys.c | 4 +-
drivers/input/keyboard/pmic8xxx-keypad.c | 4 +-
drivers/input/keyboard/pxa27x_keypad.c | 2 +-
drivers/input/keyboard/samsung-keypad.c | 4 +-
drivers/input/keyboard/spear-keyboard.c | 8 +-
drivers/input/keyboard/st-keyscan.c | 4 +-
drivers/input/keyboard/tegra-kbc.c | 4 +-
drivers/input/misc/drv260x.c | 4 +-
drivers/input/misc/drv2665.c | 4 +-
drivers/input/misc/drv2667.c | 4 +-
drivers/input/misc/gp2ap002a00f.c | 4 +-
drivers/input/misc/kxtj9.c | 4 +-
drivers/input/misc/sirfsoc-onkey.c | 2 +-
drivers/input/mouse/elan_i2c_core.c | 112 +++++++++++----
drivers/input/mouse/navpoint.c | 4 +-
drivers/input/touchscreen/ad7879.c | 6 +-
drivers/input/touchscreen/atmel_mxt_ts.c | 4 +-
drivers/input/touchscreen/auo-pixcir-ts.c | 8 +-
drivers/input/touchscreen/bu21029_ts.c | 4 +-
drivers/input/touchscreen/chipone_icn8318.c | 4 +-
drivers/input/touchscreen/cyttsp_core.c | 4 +-
drivers/input/touchscreen/eeti_ts.c | 4 +-
drivers/input/touchscreen/ektf2127.c | 4 +-
drivers/input/touchscreen/imx6ul_tsc.c | 4 +-
drivers/input/touchscreen/ipaq-micro-ts.c | 2 +-
drivers/input/touchscreen/iqs5xx.c | 4 +-
drivers/input/touchscreen/lpc32xx_ts.c | 4 +-
drivers/input/touchscreen/melfas_mip4.c | 4 +-
drivers/input/touchscreen/mms114.c | 6 +-
drivers/input/touchscreen/pixcir_i2c_ts.c | 8 +-
drivers/input/touchscreen/ucb1400_ts.c | 4 +-
drivers/input/touchscreen/wm97xx-core.c | 14 +-
drivers/input/touchscreen/zforce_ts.c | 8 +-
drivers/platform/x86/thinkpad_acpi.c | 4 +-
include/linux/input.h | 10 ++
43 files changed, 336 insertions(+), 119 deletions(-)

base-commit: 2ef96a5bb12be62ef75b5828c0aab838ebb29cb8
--
2.17.1