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01c0cce88c
Commit95da53d63d("drm/omapdrm: Use regular fbdev I/O helpers") stopped console from updating for command mode displays because there is no damage handling in fb_sys_write() unlike we had earlier in drm_fb_helper_sys_write(). Let's fix the issue by adding FB_GEN_DEFAULT_DEFERRED_DMAMEM_OPS and FB_DMAMEM_HELPERS_DEFERRED as suggested by Thomas. We cannot use the FB_DEFAULT_DEFERRED_OPS as fb_deferred_io_mmap() won't work properly for write-combine. Fixes:95da53d63d("drm/omapdrm: Use regular fbdev I/O helpers") Suggested-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240228063540.4444-3-tony@atomide.com
216 lines
5.7 KiB
Plaintext
216 lines
5.7 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 FIRMWARE_EDID
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bool "Enable firmware EDID"
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depends on FB
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help
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This enables access to the EDID transferred from the firmware.
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On the i386, this is from the Video BIOS. Enable this if DDC/I2C
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transfers do not work for your driver and if you are using
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nvidiafb, i810fb or savagefb.
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In general, choosing Y for this option is safe. If you
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experience extremely long delays while booting before you get
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something on your display, try setting this to N. Matrox cards in
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combination with certain motherboards and monitors are known to
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suffer from this problem.
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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 anc 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 generic 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_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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tristate
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depends on FB
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select BACKLIGHT_CLASS_DEVICE
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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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