Helge Deller 778283dc28 fbcon: Add option to enable legacy hardware acceleration ... commit a3f781a9d6 upstream. Add a config option CONFIG_FRAMEBUFFER_CONSOLE_LEGACY_ACCELERATION to enable 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. If you plan to use DRM as your main graphics output system, you should disable this option since it will prevent compiling in code which isn't used later on when DRM takes over. For all other configurations, e.g. if none of your graphic cards support DRM (yet), DRM isn't available for your architecture, or you can't be sure that the graphic card in the target system will support DRM, you most likely want to enable this option. In the non-accelerated case (e.g. when DRM is used), the inlined fb_scrollmode() function is hardcoded to return SCROLL_REDRAW and as such the compiler is able to optimize much unneccesary code away. In this v3 patch version I additionally changed the GETVYRES() and GETVXRES() macros to take a pointer to the fbcon_display struct. This fixes the build when console rotation is enabled and helps the compiler again to optimize out code. Signed-off-by: Helge Deller <deller@gmx.de> Cc: stable@vger.kernel.org # v5.10+ Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20220202135531.92183-4-deller@gmx.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-02-08 18:34:06 +01:00
..
dummycon.c	console: Delete dummy con_font_set() and con_font_default() callback implementations	2020-11-16 16:31:09 +01:00
Kconfig	fbcon: Add option to enable legacy hardware acceleration	2022-02-08 18:34:06 +01:00
Makefile
mdacon.c	vt: use newly defined CUR_* macros	2020-06-24 17:08:33 +02:00
newport_con.c	TTY/Serial patches for 5.10-rc1	2020-10-14 16:05:52 -07:00
sticon.c	parisc/sticon: fix reverse colors	2021-11-25 09:48:46 +01:00
sticore.c	parisc/sticore: Avoid hard-coding built-in font charcount	2020-11-16 16:31:58 +01:00
vgacon.c	vgacon: Propagate console boot parameters before calling `vc_resize'	2021-12-08 09:04:55 +01:00