Where is Android LCD backlight control code?
<p>I'm trying to know how the LCD backlight is controlled in Android. I figured out that /sys/class/leds/lcd-backlight/brightness file is used.</p>

<p>However, I can't find core source code to control the backlight. Is it in Android kernel or specific device driver?</p>

<p>Please give me some advice.</p>

<p>Thank you.</p>
