This provides backlight uclass driver that enables basic panel
backlight support.
+config VIDEO_PCI_DEFAULT_FB_SIZE
+ hex "Default framebuffer size to use if no drivers request it"
+ depends on DM_VIDEO
+ default 0x1000000 if X86 && PCI
+ default 0 if !(X86 && PCI)
+ help
+ Generally, video drivers request the amount of memory they need for
+ the frame buffer when they are bound, by setting the size field in
+ struct video_uc_platdata. That memory is then reserved for use after
+ relocation. But PCI drivers cannot be bound before relocation unless
+ they are mentioned in the devicetree.
+
+ With this value set appropriately, it is possible for PCI video
+ devices to have a framebuffer allocated by U-Boot.
+
+ Note: the framebuffer needs to be large enough to store all pixels at
+ maximum resolution. For example, at 1920 x 1200 with 32 bits per
+ pixel, 2560 * 1600 * 32 / 8 = 0xfa0000 bytes are needed.
+
+config VIDEO_COPY
+ bool "Enable copying the frame buffer to a hardware copy"
+ depends on DM_VIDEO
+ help
+ On some machines (e.g. x86), reading from the frame buffer is very
+ slow because it is uncached. To improve performance, this feature
+ allows the frame buffer to be kept in cached memory (allocated by
+ U-Boot) and then copied to the hardware frame-buffer as needed.
+
+ To use this, your video driver must set @copy_base in
+ struct video_uc_platdata.
+
config BACKLIGHT_PWM
bool "Generic PWM based Backlight Driver"
depends on BACKLIGHT && DM_PWM
source "drivers/video/fonts/Kconfig"
config VIDCONSOLE_AS_LCD
- string "Use 'vidconsole' when string defined here is seen in stdout"
+ bool "Use 'vidconsole' when CONFIG_VIDCONSOLE_AS_NAME string is seen in stdout"
depends on DM_VIDEO
+ help
+ This is a work-around for boards which have 'lcd' or 'vga' in their
+ stdout environment variable, but have moved to use driver model for
+ video. In this case the console will no-longer work. While it is
+ possible to update the environment, the breakage may be confusing for
+ users. This option will be removed around the end of 2020.
+
+config VIDCONSOLE_AS_NAME
+ string "Use 'vidconsole' when string defined here is seen in stdout"
+ depends on VIDCONSOLE_AS_LCD
default "lcd" if LCD || TEGRA_COMMON
default "vga" if !LCD
help
source "drivers/video/imx/Kconfig"
+config VIDEO_NX
+ bool "Enable video support on Nexell SoC"
+ depends on ARCH_S5P6818 || ARCH_S5P4418
+ help
+ Nexell SoC supports many video output options including eDP and
+ HDMI. This option enables this support which can be used on devices
+ which have an eDP display connected.
+
+source "drivers/video/nexell/Kconfig"
+
config VIDEO
bool "Enable legacy video support"
depends on !DM_VIDEO
out On-screen Display (OSD) used on gdsys FPGAs to control dynamic
textual overlays of the display outputs.
+config SPLASH_SCREEN
+ bool "Show a splash-screen image"
+ help
+ If this option is set, the environment is checked for a variable
+ "splashimage". If found, the usual display of logo, copyright and
+ system information on the LCD is suppressed and the BMP image at the
+ address specified in "splashimage" is loaded instead. The console is
+ redirected to the "nulldev", too. This allows for a "silent" boot
+ where a splash screen is loaded very quickly after power-on.
+
+ The splash_screen_prepare() function is a weak function defined in
+ common/splash.c. It is called as part of the splash screen display
+ sequence. It gives the board an opportunity to prepare the splash
+ image data before it is processed and sent to the frame buffer by
+ U-Boot. Define your own version to use this feature.
+
+config SPLASHIMAGE_GUARD
+ bool "Support unaligned BMP images"
+ depends on SPLASH_SCREEN
+ help
+ If this option is set, then U-Boot will prevent the environment
+ variable "splashimage" from being set to a problematic address
+ (see doc/README.displaying-bmps).
+
+ This option is useful for targets where, due to alignment
+ restrictions, an improperly aligned BMP image will cause a data
+ abort. If you think you will not have problems with unaligned
+ accesses (for example because your toolchain prevents them)
+ there is no need to set this option.
+
+config SPLASH_SCREEN_ALIGN
+ bool "Allow positioning the splash image anywhere on the display"
+ depends on SPLASH_SCREEN || CMD_BMP
+ help
+ If this option is set the splash image can be freely positioned
+ on the screen. Environment variable "splashpos" specifies the
+ position as "x,y". If a positive number is given it is used as
+ number of pixel from left/top. If a negative number is given it
+ is used as number of pixel from right/bottom. You can also
+ specify 'm' for centering the image.
+
+ Example:
+ setenv splashpos m,m
+ => image at center of screen
+
+ setenv splashpos 30,20
+ => image at x = 30 and y = 20
+
+ setenv splashpos -10,m
+ => vertically centered image
+ at x = dspWidth - bmpWidth - 9
+
+config SPLASH_SOURCE
+ bool "Control the source of the splash image"
+ depends on SPLASH_SCREEN
+ help
+ Use the splash_source.c library. This library provides facilities to
+ declare board specific splash image locations, routines for loading
+ splash image from supported locations, and a way of controlling the
+ selected splash location using the "splashsource" environment
+ variable.
+
+ This CONFIG works as follows:
+
+ - If splashsource is set to a supported location name as defined by
+ board code, use that splash location.
+ - If splashsource is undefined, use the first splash location as
+ default.
+ - If splashsource is set to an unsupported value, do not load a splash
+ screen.
+
+ A splash source location can describe either storage with raw data, a
+ storage formatted with a file system or a FIT image. In case of a
+ filesystem, the splash screen data is loaded as a file. The name of
+ the splash screen file can be controlled with the environment variable
+ "splashfile".
+
+ To enable loading the splash image from a FIT image, CONFIG_FIT must
+ be enabled. The FIT image has to start at the 'offset' field address
+ in the selected splash location. The name of splash image within the
+ FIT shall be specified by the environment variable "splashfile".
+
+ In case the environment variable "splashfile" is not defined the
+ default name 'splash.bmp' will be used.
+
+config VIDEO_BMP_GZIP
+ bool "Gzip compressed BMP image support"
+ depends on CMD_BMP || SPLASH_SCREEN
+ help
+ If this option is set, additionally to standard BMP
+ images, gzipped BMP images can be displayed via the
+ splashscreen support or the bmp command.
+
+config VIDEO_BMP_RLE8
+ bool "Run length encoded BMP image (RLE8) support"
+ depends on DM_VIDEO || CFB_CONSOLE
+ help
+ If this option is set, the 8-bit RLE compressed BMP images
+ is supported.
+
+config BMP_16BPP
+ bool "16-bit-per-pixel BMP image support"
+ depends on DM_VIDEO || LCD
+ help
+ Support display of bitmaps file with 16-bit-per-pixel
+
+config BMP_24BPP
+ bool "24-bit-per-pixel BMP image support"
+ depends on DM_VIDEO || LCD
+ help
+ Support display of bitmaps file with 24-bit-per-pixel.
+
+config BMP_32BPP
+ bool "32-bit-per-pixel BMP image support"
+ depends on DM_VIDEO || LCD
+ help
+ Support display of bitmaps file with 32-bit-per-pixel.
+
endmenu
projects / platform / kernel / u-boot.git / blobdiff