Qualcomm PMIC WLED Driver

modulename: qcom-wled.ko

configname: CONFIG_BACKLIGHT_QCOM_WLED

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Backlight & LCD device support
└─>Qualcomm PMIC WLED Driver
In linux kernel since version 5.1 (release Date: 2019-05-05)  
If you have the Qualcomm PMIC, say Y to enable a driver for the
WLED block. Currently it supports PM8941 and PMI8998.

source code:
drivers/video/backlight/qcom-wled.c
selects
CONFIG_REGMAP