# SPDX-License-Identifier: GPL-2.0-only config DRM_MGAG200 tristate "Matrox G200" depends on DRM && PCI && MMU select DRM_GEM_SHMEM_HELPER select DRM_KMS_HELPER select I2C select I2C_ALGOBIT help This is a KMS driver for Matrox G200 chips. It supports the original MGA G200 desktop chips and the server variants. It requires 0.3.0 of the modesetting userspace driver, and a version of mga driver that will fail on KMS enabled devices. config DRM_MGAG200_IOBURST_WORKAROUND bool "Disable buffer caching" depends on DRM_MGAG200 && PREEMPT_RT && X86 help Enable a workaround to avoid I/O bursts within the mgag200 driver at the expense of overall display performance. It restores the <v5.10 behavior, by mapping the framebuffer in system RAM as Write-Combining, and flushing the cache after each write. This is only useful on x86_64 if you want to run processes with deterministic latency. If unsure, say N.