drivers/video/fbdev/core/Kconfig

Source file repositories/reference/linux-study-clean/drivers/video/fbdev/core/Kconfig

File Facts

System: Linux kernel
Corpus path: drivers/video/fbdev/core/Kconfig
Extension: [no extension]
Size: 5424 bytes
Lines: 208
Domain: Driver Families
Bucket: drivers/video
Inferred role: Driver Families: build/configuration rule
Status: atlas-only

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

No C-style include directives detected by the generator.

Detected Declarations

No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

# SPDX-License-Identifier: GPL-2.0-only
#
# fbdev core configuration
#

config FB_CORE
	select VIDEO
	tristate

config FB_NOTIFY
	bool

config FB_DEVICE
	bool "Provide legacy /dev/fb* device"
	depends on FB_CORE
	default FB
	help
	  Say Y here if you want the legacy /dev/fb* device file and
	  interfaces within sysfs and procfs. It is only required if you
	  have userspace programs that depend on fbdev for graphics output.
	  This does not affect the framebuffer console. If unsure, say N.

config FB_DDC
	tristate
	depends on FB
	select I2C_ALGOBIT
	select I2C

config FB_CFB_FILLRECT
	tristate
	depends on FB_CORE
	help
	  Include the cfb_fillrect function for generic software rectangle
	  filling. This is used by drivers that don't provide their own
	  (accelerated) version.

config FB_CFB_COPYAREA
	tristate
	depends on FB_CORE
	help
	  Include the cfb_copyarea function for generic software area copying.
	  This is used by drivers that don't provide their own (accelerated)
	  version.

config FB_CFB_IMAGEBLIT
	tristate
	depends on FB_CORE
	help
	  Include the cfb_imageblit function for generic software image
	  blitting. This is used by drivers that don't provide their own
	  (accelerated) version.

config FB_CFB_REV_PIXELS_IN_BYTE
	bool
	depends on FB_CORE
	help
	  Allow I/O memory frame-buffer functions to work on displays with 1, 2
	  and 4 bits per pixel depths which has opposite order of pixels in
	  byte order to bytes in long order.

config FB_SYS_FILLRECT
	tristate
	depends on FB_CORE
	help
	  Include the sys_fillrect function for generic software rectangle
	  filling. This is used by drivers that don't provide their own
	  (accelerated) version and the framebuffer is in system RAM.

config FB_SYS_COPYAREA
	tristate

Annotation

Atlas domain: Driver Families / drivers/video.
Implementation status: atlas-only.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.