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authorThomas Zimmermann <tzimmermann@suse.de>2022-06-22 17:01:33 +0300
committerThomas Zimmermann <tzimmermann@suse.de>2022-06-27 12:07:55 +0300
commit7283f862bd991c8657e9bf1c02db772fcf018f13 (patch)
treef1a68f7a0ba8af5d2d1429bf75cdb62acc85bb0b /drivers/video/Kconfig
parentefc8f3229f846ea6e6d96ffc336b3db8837eae56 (diff)
downloadlinux-7283f862bd991c8657e9bf1c02db772fcf018f13.tar.xz
drm: Implement DRM aperture helpers under video/
Implement DRM's aperture helpers under video/ for sharing with other sub-systems. Remove DRM-isms from the interface. The helpers track the ownership of framebuffer apertures and provide hand-over from firmware, such as EFI and VESA, to native graphics drivers. Other subsystems, such as fbdev and vfio, also have to maintain ownership of framebuffer apertures. Moving DRM's aperture helpers to a more public location allows all subsystems to interact with each other and share a common implementation. The aperture helpers are selected by the various firmware drivers within DRM and fbdev, and the VGA text-console driver. The original DRM interface is kept in place for use by DRM drivers. v3: * prefix all interfaces with aperture_ (Javier) * rework and simplify documentation (Javier) * rename struct dev_aperture to struct aperture_range * rebase onto latest DRM * update MAINTAINERS entry Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Tested-by: Laszlo Ersek <lersek@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220622140134.12763-3-tzimmermann@suse.de
Diffstat (limited to 'drivers/video/Kconfig')
-rw-r--r--drivers/video/Kconfig6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 427a993c7f57..0587e21abad9 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -5,6 +5,12 @@
menu "Graphics support"
+config APERTURE_HELPERS
+ bool
+ help
+ Support tracking and hand-over of aperture ownership. Required
+ by graphics drivers for firmware-provided framebuffers.
+
if HAS_IOMEM
config HAVE_FB_ATMEL