On Wed, Feb 02, 2022 at 02:55:28PM +0100, Helge Deller wrote: > This series reverts two patches which disabled scrolling acceleration in > fbcon/fbdev. Those patches introduced a regression for fbdev-supported graphic > cards because of the performance penalty by doing screen scrolling by software > instead of using existing 2D hardware acceleration. > > The third patch introduces a new config option > CONFIG_FRAMEBUFFER_CONSOLE_LEGACY_ACCELERATION, which -if enabled- switches > fbcon to utilize the bitblt and fillrect hardware acceleration in the > framebuffer console. If disabled, such acceleration will not be used, even if > it is supported by the graphics hardware driver. > > This series is being discussed on linux-fbdev and dri-devel mailing lists. > > Updates in v3: > - respin with fixes to build rotation code > > Updates in v4: > - changed the Kconfig option and Kconfig help text > > Helge Deller (3): > Revert "fbdev: Garbage collect fbdev scrolling acceleration, part 1 > (from TODO list)" > Revert "fbcon: Disable accelerated scrolling" > fbcon: Add option to enable legacy hardware acceleration Applied to drm-misc-fixes, thanks for the patches. Cheers, Daniel > > Documentation/gpu/todo.rst | 24 - > drivers/video/console/Kconfig | 20 + > drivers/video/fbdev/core/bitblit.c | 16 + > drivers/video/fbdev/core/fbcon.c | 557 +++++++++++++++++++++++- > drivers/video/fbdev/core/fbcon.h | 72 +++ > drivers/video/fbdev/core/fbcon_ccw.c | 28 +- > drivers/video/fbdev/core/fbcon_cw.c | 28 +- > drivers/video/fbdev/core/fbcon_rotate.h | 9 + > drivers/video/fbdev/core/fbcon_ud.c | 37 +- > drivers/video/fbdev/core/tileblit.c | 16 + > drivers/video/fbdev/skeletonfb.c | 12 +- > include/linux/fb.h | 2 +- > 12 files changed, 753 insertions(+), 68 deletions(-) > > -- > 2.34.1 > -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch
