Raspberry Pi 7-inch touchscreen panel

modulename: panel-raspberrypi-touchscreen.ko

configname: CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
└─>Display Panels
└─>Raspberry Pi 7-inch touchscreen panel
In linux kernel since version 4.2 (release Date: 2015-08-30)  
Say Y here if you want to enable support for the Raspberry
Pi 7" Touchscreen. To compile this driver as a module,
choose M here.

source code: