There is some exciting news to break today on Phoronix... Coming up at FOSDEM (the Free Open-Source Developers' European Meeting in Brussels) will be the formal announcement of an open-source, reverse-engineered graphics driver for the ARM Mali graphics processor. OpenGL ES triangles are in action on open-source code. Will this be the start of fully open-source ARM graphics drivers for Android and Linux?
Mali is ARM's current family of GPUs that they pair with the ARM Cortex processors for some hardware. The Mali-400 was ARM's first OpenGL ES 2.0 conformant multi-core GPU with 2D and 3D hardware acceleration. Up to this point the Mali graphics hardware has been supported by ARM with a closed-source driver stack -- and no open-source DRM/KMS driver in the mainline kernel tree like what's been done at Samsung with Exynos and Texas Instruments with omapdrm; albeit neither of those provide hardware acceleration, just mode-setting and basic support.