Hi Linus, On 02/03/18 09:09, Linus Walleij wrote:
This is the base for finally getting RealView and Versatile Express supported in the PL111 DRM driver. We have then moved all the way up from the first ARM Integrator versions to the last Versatile Express reference designs using PL111. After this, forked hardware such as Nomadik and SPEAr remains to be moved over. Some infrastructure for adjusting depth (ARGB5551) etc on the Integrator and some bridge fixups are still needed but this is the core of the support for these platforms and the rest can be done on top before switching over. Also the Versatile Express CLCD on the motherboard has a dedicated video memory, and cannot use CMA (ha! complex!) and I will need to figure out a way to work around that. The CLCDs synthesized on the core tiles for CA9 work fine with this though.
Out of curiosity, what's the issue with declaring the VRAM as a CMA region? That's certainly worked for stuff like local RAM on FPGA tiles in the past, and I can't think offhand of any way in which VExpress is wildly different (but I am of course open to being wrong...)
Robin.
Linus Walleij (4): drm/pl111: Make the default BPP a per-variant variable drm/pl111: Use max memory bandwidth for resolution drm/pl111: Handle the RealView variant separately drm/pl111: Support the Versatile Express drivers/gpu/drm/pl111/Makefile | 1 + drivers/gpu/drm/pl111/pl111_display.c | 36 +++++++++++ drivers/gpu/drm/pl111/pl111_drm.h | 6 +- drivers/gpu/drm/pl111/pl111_drv.c | 10 ++- drivers/gpu/drm/pl111/pl111_versatile.c | 80 +++++++++++++++++++++++- drivers/gpu/drm/pl111/pl111_vexpress.c | 106 ++++++++++++++++++++++++++++++++ drivers/gpu/drm/pl111/pl111_vexpress.h | 22 +++++++ 7 files changed, 258 insertions(+), 3 deletions(-) create mode 100644 drivers/gpu/drm/pl111/pl111_vexpress.c create mode 100644 drivers/gpu/drm/pl111/pl111_vexpress.h
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