mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-08-31 22:23:05 +00:00
eacf91b0c7
Framework fixes:
- fix potential buffer overflow in do_register_framebuffer() [Yongzhen Zhang]
Driver fixes:
- imxfb: prevent null-ptr-deref [Chenyuan Yang]
- nvidiafb: fix build on 32-bit ARCH=um [Johannes Berg]
- nvidiafb: add depends on HAS_IOPORT [Randy Dunlap]
- simplefb: Use of_reserved_mem_region_to_resource() for "memory-region" [Rob Herring]
Cleanups:
- fbcon: various code cleanups wrt blinking [Ville Syrjälä]
- kyrofb: Convert to devm_*() functions [Giovanni Di Santi]
- svgalib: Coding style cleanups [Darshan R.]
- Fix typo in Kconfig text for FB_DEVICE [Daniel Palmer]
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Merge tag 'fbdev-for-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev
Pull fbdev updates from Helge Deller:
"One potential buffer overflow fix in the framebuffer registration
function, some fixes for the imxfb, nvidiafb and simplefb drivers, and
a bunch of cleanups for fbcon, kyrofb and svgalib.
Framework fixes:
- fix potential buffer overflow in do_register_framebuffer() [Yongzhen Zhang]
Driver fixes:
- imxfb: prevent null-ptr-deref [Chenyuan Yang]
- nvidiafb: fix build on 32-bit ARCH=um [Johannes Berg]
- nvidiafb: add depends on HAS_IOPORT [Randy Dunlap]
- simplefb: Use of_reserved_mem_region_to_resource() for "memory-region" [Rob Herring]
Cleanups:
- fbcon: various code cleanups wrt blinking [Ville Syrjälä]
- kyrofb: Convert to devm_*() functions [Giovanni Di Santi]
- svgalib: Coding style cleanups [Darshan R.]
- Fix typo in Kconfig text for FB_DEVICE [Daniel Palmer]"
* tag 'fbdev-for-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev:
fbcon: Use 'bool' where appopriate
fbcon: Introduce get_{fg,bg}_color()
fbcon: fbcon_is_inactive() -> fbcon_is_active()
fbcon: fbcon_cursor_noblink -> fbcon_cursor_blink
fbdev: Fix typo in Kconfig text for FB_DEVICE
fbdev: imxfb: Check fb_add_videomode to prevent null-ptr-deref
fbdev: svgalib: Clean up coding style
fbdev: kyro: Use devm_ioremap_wc() for screen mem
fbdev: kyro: Use devm_ioremap() for mmio registers
fbdev: kyro: Add missing PCI memory region request
fbdev: simplefb: Use of_reserved_mem_region_to_resource() for "memory-region"
fbdev: fix potential buffer overflow in do_register_framebuffer()
fbdev: nvidiafb: add depends on HAS_IOPORT
fbdev: nvidiafb: fix build on 32-bit ARCH=um
208 lines
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208 lines
5.3 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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#
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# fbdev core configuration
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#
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config FB_CORE
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select VIDEO
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tristate
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config FB_NOTIFY
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bool
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config FB_DEVICE
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bool "Provide legacy /dev/fb* device"
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depends on FB_CORE
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default FB
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help
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Say Y here if you want the legacy /dev/fb* device file and
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interfaces within sysfs and procfs. It is only required if you
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have userspace programs that depend on fbdev for graphics output.
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This does not affect the framebuffer console. If unsure, say N.
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config FB_DDC
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tristate
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depends on FB
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select I2C_ALGOBIT
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select I2C
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config FB_CFB_FILLRECT
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tristate
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depends on FB_CORE
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help
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Include the cfb_fillrect function for generic software rectangle
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filling. This is used by drivers that don't provide their own
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(accelerated) version.
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config FB_CFB_COPYAREA
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tristate
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depends on FB_CORE
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help
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Include the cfb_copyarea function for generic software area copying.
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This is used by drivers that don't provide their own (accelerated)
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version.
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config FB_CFB_IMAGEBLIT
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tristate
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depends on FB_CORE
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help
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Include the cfb_imageblit function for generic software image
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blitting. This is used by drivers that don't provide their own
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(accelerated) version.
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config FB_CFB_REV_PIXELS_IN_BYTE
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bool
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depends on FB_CORE
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help
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Allow I/O memory frame-buffer functions to work on displays with 1, 2
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and 4 bits per pixel depths which has opposite order of pixels in
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byte order to bytes in long order.
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config FB_SYS_FILLRECT
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tristate
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depends on FB_CORE
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help
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Include the sys_fillrect function for generic software rectangle
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filling. This is used by drivers that don't provide their own
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(accelerated) version and the framebuffer is in system RAM.
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config FB_SYS_COPYAREA
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tristate
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depends on FB_CORE
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help
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Include the sys_copyarea function for generic software area copying.
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This is used by drivers that don't provide their own (accelerated)
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version and the framebuffer is in system RAM.
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config FB_SYS_IMAGEBLIT
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tristate
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depends on FB_CORE
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help
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Include the sys_imageblit function for generic software image
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blitting. This is used by drivers that don't provide their own
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(accelerated) version and the framebuffer is in system RAM.
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config FB_SYS_REV_PIXELS_IN_BYTE
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bool
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depends on FB_CORE
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help
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Allow virtual memory frame-buffer functions to work on displays with 1, 2
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and 4 bits per pixel depths which has opposite order of pixels in
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byte order to bytes in long order.
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config FB_PROVIDE_GET_FB_UNMAPPED_AREA
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bool
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depends on FB
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help
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Allow generic frame-buffer to provide get_fb_unmapped_area
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function to provide shareable character device support on nommu.
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menuconfig FB_FOREIGN_ENDIAN
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bool "Framebuffer foreign endianness support"
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depends on FB
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help
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This menu will let you enable support for the framebuffers with
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non-native endianness (e.g. Little-Endian framebuffer on a
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Big-Endian machine). Most probably you don't have such hardware,
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so it's safe to say "n" here.
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choice
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prompt "Choice endianness support"
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depends on FB_FOREIGN_ENDIAN
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config FB_BOTH_ENDIAN
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bool "Support for Big- and Little-Endian framebuffers"
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config FB_BIG_ENDIAN
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bool "Support for Big-Endian framebuffers only"
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config FB_LITTLE_ENDIAN
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bool "Support for Little-Endian framebuffers only"
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endchoice
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config FB_SYSMEM_FOPS
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tristate
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depends on FB_CORE
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config FB_DEFERRED_IO
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bool
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depends on FB_CORE
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config FB_DMAMEM_HELPERS
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bool
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depends on FB_CORE
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select FB_SYS_COPYAREA
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select FB_SYS_FILLRECT
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select FB_SYS_IMAGEBLIT
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select FB_SYSMEM_FOPS
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config FB_DMAMEM_HELPERS_DEFERRED
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bool
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depends on FB_CORE
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select FB_DEFERRED_IO
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select FB_DMAMEM_HELPERS
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config FB_IOMEM_FOPS
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tristate
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depends on FB_CORE
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config FB_IOMEM_HELPERS
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bool
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depends on FB_CORE
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select FB_CFB_COPYAREA
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select FB_CFB_FILLRECT
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select FB_CFB_IMAGEBLIT
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select FB_IOMEM_FOPS
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config FB_IOMEM_HELPERS_DEFERRED
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bool
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depends on FB_CORE
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select FB_DEFERRED_IO
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select FB_IOMEM_HELPERS
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config FB_SYSMEM_HELPERS
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bool
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depends on FB_CORE
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select FB_SYS_COPYAREA
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select FB_SYS_FILLRECT
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select FB_SYS_IMAGEBLIT
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select FB_SYSMEM_FOPS
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config FB_SYSMEM_HELPERS_DEFERRED
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bool
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depends on FB_CORE
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select FB_DEFERRED_IO
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select FB_SYSMEM_HELPERS
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config FB_BACKLIGHT
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bool
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depends on FB
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config FB_MODE_HELPERS
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bool "Enable Video Mode Handling Helpers"
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depends on FB
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help
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This enables functions for handling video modes using the
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Generalized Timing Formula and the EDID parser. A few drivers rely
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on this feature such as the radeonfb, rivafb, and the i810fb. If
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your driver does not take advantage of this feature, choosing Y will
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just increase the kernel size by about 5K.
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config FB_TILEBLITTING
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bool "Enable Tile Blitting Support"
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depends on FB
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help
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This enables tile blitting. Tile blitting is a drawing technique
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where the screen is divided into rectangular sections (tiles), whereas
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the standard blitting divides the screen into pixels. Because the
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default drawing element is a tile, drawing functions will be passed
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parameters in terms of number of tiles instead of number of pixels.
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For example, to draw a single character, instead of using bitmaps,
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an index to an array of bitmaps will be used. To clear or move a
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rectangular section of a screen, the rectangle will be described in
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terms of number of tiles in the x- and y-axis.
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This is particularly important to one driver, matroxfb. If
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unsure, say N.
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