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84 lines
1.9 KiB
84 lines
1.9 KiB
.. SPDX-License-Identifier: GPL-2.0+ |
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LG Gram laptop extra features |
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============================= |
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By Matan Ziv-Av <[email protected]> |
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Hotkeys |
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------- |
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The following FN keys are ignored by the kernel without this driver: |
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- FN-F1 (LG control panel) - Generates F15 |
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- FN-F5 (Touchpad toggle) - Generates F13 |
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- FN-F6 (Airplane mode) - Generates RFKILL |
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- FN-F8 (Keyboard backlight) - Generates F16. |
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This key also changes keyboard backlight mode. |
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- FN-F9 (Reader mode) - Generates F14 |
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The rest of the FN keys work without a need for a special driver. |
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Reader mode |
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----------- |
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Writing 0/1 to /sys/devices/platform/lg-laptop/reader_mode disables/enables |
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reader mode. In this mode the screen colors change (blue color reduced), |
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and the reader mode indicator LED (on F9 key) turns on. |
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FN Lock |
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Writing 0/1 to /sys/devices/platform/lg-laptop/fn_lock disables/enables |
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FN lock. |
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Battery care limit |
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------------------ |
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Writing 80/100 to /sys/devices/platform/lg-laptop/battery_care_limit |
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sets the maximum capacity to charge the battery. Limiting the charge |
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reduces battery capacity loss over time. |
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This value is reset to 100 when the kernel boots. |
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Fan mode |
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-------- |
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Writing 1/0 to /sys/devices/platform/lg-laptop/fan_mode disables/enables |
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the fan silent mode. |
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USB charge |
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---------- |
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Writing 0/1 to /sys/devices/platform/lg-laptop/usb_charge disables/enables |
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charging another device from the USB port while the device is turned off. |
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This value is reset to 0 when the kernel boots. |
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LEDs |
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~~~~ |
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The are two LED devices supported by the driver: |
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Keyboard backlight |
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------------------ |
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A led device named kbd_led controls the keyboard backlight. There are three |
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lighting level: off (0), low (127) and high (255). |
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The keyboard backlight is also controlled by the key combination FN-F8 |
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which cycles through those levels. |
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Touchpad indicator LED |
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---------------------- |
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On the F5 key. Controlled by led device names tpad_led.
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