A list of special device files (2.4 / 2.6 kernel only!)

The 2.4/2.6 kernels expose some old-style /proc interfaces

• /proc/jz/numlock_led - write 0 or 1 to the LED
• /proc/jz/capslock_led - write 0 or 1 to the LED
• /proc/jz/eth0_led - write 0 or 1 to the LED
• /proc/jz/battery - reads battery flag
• /proc/jz/battery-level - reads battery status
• /proc/jz/wifi-power - write 0 or 1 to power up WiFi

• /proc/jz/backlight - write value to backlight PWM (0..300)

• /proc/powerdown

• Touch screen position

• Touch screen keys
• Keyboard events

This all will be replaced by modern API in the Letux-kernels >4.13

• LEDs: /sys/class/leds
• battery: /sys/class/power_supply ?
• wifi-power: ?
• backlight: /sys/class/backlight
• powerdown: ?
• Touch/Keyboard: /dev/input/event*