diff options
Diffstat (limited to 'drivers/video/fbdev/core/Kconfig')
| -rw-r--r-- | drivers/video/fbdev/core/Kconfig | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/drivers/video/fbdev/core/Kconfig b/drivers/video/fbdev/core/Kconfig new file mode 100644 index 000000000000..baf7e852c75b --- /dev/null +++ b/drivers/video/fbdev/core/Kconfig @@ -0,0 +1,198 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# fbdev core configuration +# + +config FB_CORE + select VIDEO_CMDLINE + tristate + +config FB_NOTIFY + bool + +config FIRMWARE_EDID + bool "Enable firmware EDID" + depends on FB + help + This enables access to the EDID transferred from the firmware. + On the i386, this is from the Video BIOS. Enable this if DDC/I2C + transfers do not work for your driver and if you are using + nvidiafb, i810fb or savagefb. + + In general, choosing Y for this option is safe. If you + experience extremely long delays while booting before you get + something on your display, try setting this to N. Matrox cards in + combination with certain motherboards and monitors are known to + suffer from this problem. + +config FB_DEVICE + bool "Provide legacy /dev/fb* device" + depends on FB_CORE + default y + help + Say Y here if you want the legacy /dev/fb* device file and + interfaces within sysfs anc 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 generic 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 + depends on FB_CORE + help + Include the sys_copyarea function for generic software area copying. + This is used by drivers that don't provide their own (accelerated) + version and the framebuffer is in system RAM. + +config FB_SYS_IMAGEBLIT + tristate + depends on FB_CORE + help + Include the sys_imageblit function for generic software image + blitting. This is used by drivers that don't provide their own + (accelerated) version and the framebuffer is in system RAM. + +config FB_PROVIDE_GET_FB_UNMAPPED_AREA + bool + depends on FB + help + Allow generic frame-buffer to provide get_fb_unmapped_area + function to provide shareable character device support on nommu. + +menuconfig FB_FOREIGN_ENDIAN + bool "Framebuffer foreign endianness support" + depends on FB + help + This menu will let you enable support for the framebuffers with + non-native endianness (e.g. Little-Endian framebuffer on a + Big-Endian machine). Most probably you don't have such hardware, + so it's safe to say "n" here. + +choice + prompt "Choice endianness support" + depends on FB_FOREIGN_ENDIAN + +config FB_BOTH_ENDIAN + bool "Support for Big- and Little-Endian framebuffers" + +config FB_BIG_ENDIAN + bool "Support for Big-Endian framebuffers only" + +config FB_LITTLE_ENDIAN + bool "Support for Little-Endian framebuffers only" + +endchoice + +config FB_SYS_FOPS + tristate + depends on FB_CORE + +config FB_DEFERRED_IO + bool + depends on FB_CORE + +config FB_DMAMEM_HELPERS + bool + depends on FB_CORE + select FB_SYS_COPYAREA + select FB_SYS_FILLRECT + select FB_SYS_FOPS + select FB_SYS_IMAGEBLIT + +config FB_IOMEM_HELPERS + bool + depends on FB_CORE + select FB_CFB_COPYAREA + select FB_CFB_FILLRECT + select FB_CFB_IMAGEBLIT + +config FB_SYSMEM_HELPERS + bool + depends on FB_CORE + select FB_SYS_COPYAREA + select FB_SYS_FILLRECT + select FB_SYS_FOPS + select FB_SYS_IMAGEBLIT + +config FB_SYSMEM_HELPERS_DEFERRED + bool + depends on FB_CORE + select FB_DEFERRED_IO + select FB_SYSMEM_HELPERS + +config FB_BACKLIGHT + tristate + depends on FB + select BACKLIGHT_CLASS_DEVICE + +config FB_MODE_HELPERS + bool "Enable Video Mode Handling Helpers" + depends on FB + help + This enables functions for handling video modes using the + Generalized Timing Formula and the EDID parser. A few drivers rely + on this feature such as the radeonfb, rivafb, and the i810fb. If + your driver does not take advantage of this feature, choosing Y will + just increase the kernel size by about 5K. + +config FB_TILEBLITTING + bool "Enable Tile Blitting Support" + depends on FB + help + This enables tile blitting. Tile blitting is a drawing technique + where the screen is divided into rectangular sections (tiles), whereas + the standard blitting divides the screen into pixels. Because the + default drawing element is a tile, drawing functions will be passed + parameters in terms of number of tiles instead of number of pixels. + For example, to draw a single character, instead of using bitmaps, + an index to an array of bitmaps will be used. To clear or move a + rectangular section of a screen, the rectangle will be described in + terms of number of tiles in the x- and y-axis. + + This is particularly important to one driver, matroxfb. If + unsure, say N. |