(cc: Gerd) Am 28.10.19 um 09:45 schrieb Thomas Zimmermann: > Udl's GEM implementation is mostly SHMEM and we should attempt to > replace it with the latter. > > Patches #1 and #2 update udl to simplify the conversion. In patch #3 > the udl code is being replaced by SHMEM. The GEM object's mmap() and > free_object() functions are wrappers around their SHMEM counterparts. > For mmap() we fix-up the page-caching flags to distinguish between > write-combined and cached access. For free(), we have to unmap the > buffer's mapping that has been established by udl's fbdev code. > > The patchset has been tested by running the fbdev console, X11 and > Weston on a DisplayLink adapter. > > Thomas Zimmermann (3): > drm/udl: Remove flags field from struct udl_gem_object > drm/udl: Allocate GEM object via struct drm_driver.gem_create_object > drm/udl: Switch to SHMEM > > drivers/gpu/drm/udl/Kconfig | 1 + > drivers/gpu/drm/udl/Makefile | 2 +- > drivers/gpu/drm/udl/udl_dmabuf.c | 255 ------------------------------- > drivers/gpu/drm/udl/udl_drv.c | 30 +--- > drivers/gpu/drm/udl/udl_drv.h | 36 +---- > drivers/gpu/drm/udl/udl_fb.c | 65 ++++---- > drivers/gpu/drm/udl/udl_gem.c | 245 ++++++----------------------- > 7 files changed, 93 insertions(+), 541 deletions(-) > delete mode 100644 drivers/gpu/drm/udl/udl_dmabuf.c > > -- > 2.23.0 > -- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Maxfeldstr. 5, 90409 Nürnberg, Germany (HRB 36809, AG Nürnberg) Geschäftsführer: Felix Imendörffer
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