CONFIG_DRM_GEM_DMA_HELPER (not configurable)

modulename: drm_dma_helper.ko

configname: CONFIG_DRM_GEM_DMA_HELPER

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
└─>DRM_GEM_DMA_HELPER
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
Choose this if you need the GEM DMA helper functions

source code:
drivers/gpu/drm//