83 lines
1.8 KiB
ReStructuredText
83 lines
1.8 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0+
|
|
|
|
|
|
LG Gram laptop extra features
|
|
=============================
|
|
|
|
By Matan Ziv-Av <matan@svgalib.org>
|
|
|
|
|
|
Hotkeys
|
|
-------
|
|
|
|
The following FN keys are ignored by the kernel without this driver:
|
|
|
|
- FN-F1 (LG control panel) - Generates F15
|
|
- FN-F5 (Touchpad toggle) - Generates F21
|
|
- FN-F6 (Airplane mode) - Generates RFKILL
|
|
- FN-F9 (Reader mode) - Generates F14
|
|
|
|
The rest of the FN keys work without a need for a special driver.
|
|
|
|
|
|
Reader mode
|
|
-----------
|
|
|
|
Writing 0/1 to /sys/devices/platform/lg-laptop/reader_mode disables/enables
|
|
reader mode. In this mode the screen colors change (blue color reduced),
|
|
and the reader mode indicator LED (on F9 key) turns on.
|
|
|
|
|
|
FN Lock
|
|
-------
|
|
|
|
Writing 0/1 to /sys/devices/platform/lg-laptop/fn_lock disables/enables
|
|
FN lock.
|
|
|
|
|
|
Battery care limit
|
|
------------------
|
|
|
|
Writing 80/100 to /sys/class/power_supply/CMB0/charge_control_end_threshold
|
|
sets the maximum capacity to charge the battery. Limiting the charge
|
|
reduces battery capacity loss over time.
|
|
|
|
This value is reset to 100 when the kernel boots.
|
|
|
|
|
|
Fan mode
|
|
--------
|
|
|
|
Writing 1/0 to /sys/devices/platform/lg-laptop/fan_mode disables/enables
|
|
the fan silent mode.
|
|
|
|
|
|
USB charge
|
|
----------
|
|
|
|
Writing 0/1 to /sys/devices/platform/lg-laptop/usb_charge disables/enables
|
|
charging another device from the USB port while the device is turned off.
|
|
|
|
This value is reset to 0 when the kernel boots.
|
|
|
|
|
|
LEDs
|
|
~~~~
|
|
|
|
The are two LED devices supported by the driver:
|
|
|
|
Keyboard backlight
|
|
------------------
|
|
|
|
A led device named kbd_led controls the keyboard backlight. There are three
|
|
lighting level: off (0), low (127) and high (255).
|
|
|
|
The keyboard backlight is also controlled by the key combination FN-F8
|
|
which cycles through those levels.
|
|
|
|
|
|
Touchpad indicator LED
|
|
----------------------
|
|
|
|
On the F5 key. Controlled by led device names tpad_led.
|