Changes in Kconfig

5bbcc764 - mdacon: rework dependency list

Tue, 25 Feb 2025 16:44:23 +0000

mdacon: rework dependency listmdacon has roughly the same dependencies as vgacon but expresses themas a negative list instead of a positive list, with the only practicaldifference being PowerPC/CHRP, which uses vga16fb instead of vgacon.The CONFIG_MDA_CONSOLE description advises to only turn it on when vgaconis also used because MDA/Hercules-only systems should be using vgaconinstead, so just change the list to enforce that directly for simplicity.The probing was broken from 2002 to 2008, this improves on the fixthat was added then: If vgacon is a loadable module, then mdaconcannot be built-in now, and the list of systems that support vgaconis carried over.Fixes: 0b9cf3aa6b1e ("mdacon messing up default vc's - set default to vc13-16 again")Signed-off-by: Arnd Bergmann Reviewed-by: Thomas Zimmermann Signed-off-by: Helge Deller List of files: /linux-6.15/drivers/video/console/Kconfig

beefaba1 - dummycon: fix default rows/cols

Tue, 25 Feb 2025 16:44:22 +0000

dummycon: fix default rows/colsdummycon fails to build on ARM/footbridge when the VGA console isdisabled, since I got the dependencies slightly wrong in a previouspatch:drivers/video/console/dummycon.c: In function 'dummycon_init':drivers/video/console/dummycon.c:27:25: error: 'CONFIG_DUMMY_CONSOLE_COLUMNS' undeclared (first use in this function); did you mean 'CONFIG_DUMMY_CONSOLE'? 27 | #define DUMMY_COLUMNS CONFIG_DUMMY_CONSOLE_COLUMNSdrivers/video/console/dummycon.c:28:25: error: 'CONFIG_DUMMY_CONSOLE_ROWS' undeclared (first use in this function); did you mean 'CONFIG_DUMMY_CONSOLE'? 28 | #define DUMMY_ROWS CONFIG_DUMMY_CONSOLE_ROWSThis only showed up after many thousand randconfig builds on Arm, anddoesn't matter in practice, but should still be fixed. Address it byusing the default row/columns on footbridge after all in that cornercase.Fixes: 4293b0925149 ("dummycon: limit Arm console size hack to footbridge")Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202409151512.LML1slol-lkp@intel.com/Signed-off-by: Arnd Bergmann Reviewed-by: Thomas Zimmermann Signed-off-by: Helge Deller List of files: /linux-6.15/drivers/video/console/Kconfig

4027c31d - dummycon: only build module if there are users

Tue, 25 Feb 2025 16:44:21 +0000

dummycon: only build module if there are usersDummycon is used as a fallback conswitchp for vgacon and fbconin the VT code, and there are no references to it if all threeare disabled, so just leave it out of the kernel image forconfigurations without those.Signed-off-by: Arnd Bergmann Reviewed-by: Thomas Zimmermann Signed-off-by: Helge Deller List of files: /linux-6.15/drivers/video/console/Kconfig

110684d5 - vgacon: drop IA64 reference in VGA_CONSOLE dependency list

Fri, 10 Nov 2023 11:44:00 +0000

vgacon: drop IA64 reference in VGA_CONSOLE dependency listCommit e9e3300b6e77 ("vgacon: rework Kconfig dependencies") turns thedependencies into a positive list of supported architectures, whichincludes the IA64 architecture, but in the meantime, this architecture isremoved in commit cf8e8658100d ("arch: Remove Itanium (IA-64)architecture").Drop the reference to IA64 architecture in the dependency list of theVGA_CONSOLE config definition.Signed-off-by: Lukas Bulwahn Acked-by: Arnd Bergmann Reviewed-by: Javier Martinez Canillas Link: https://lore.kernel.org/r/20231110114400.30882-1-lukas.bulwahn@gmail.comSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/video/console/Kconfig

4293b092 - dummycon: limit Arm console size hack to footbridge

Mon, 09 Oct 2023 21:18:39 +0000

dummycon: limit Arm console size hack to footbridgeThe dummycon default console size used to be determined by architecture,but now this is a Kconfig setting on everything except ARM. Tracing thisback in the historic git trees, this was used to match the size of VGAconsole or VGA framebuffer on early machines, but nowadays that code isno longer used, except probably on the old footbridge/netwinder sincethat is the only one that supports vgacon.On machines with a framebuffer, booting with DT so far results in alwaysusing the hardcoded 80x30 size in dummycon, while on ATAGS the settingcan come from a bootloader specific override. Both seem to be worsechoices than the Kconfig setting, since the actual text size for fbconalso depends on the selected font.Make this work the same way as everywhere else and use the normalKconfig setting, except for the footbridge with vgacon, which keepsusing the traditional code. If vgacon is disabled, footbridge canalso ignore the setting. This means the screen_info only has to beprovided when either vgacon or EFI are enabled now.To limit the amount of surprises on Arm, change the Kconfig defaultto the previously used 80x30 setting instead of the usual 80x25.Reviewed-by: Thomas Zimmermann Tested-by: Linus Walleij Reviewed-by: Javier Martinez Canillas Acked-by: Helge Deller Signed-off-by: Arnd Bergmann Link: https://lore.kernel.org/r/20231009211845.3136536-4-arnd@kernel.orgSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/video/console/Kconfig

e9e3300b - vgacon: rework Kconfig dependencies

Mon, 09 Oct 2023 21:18:37 +0000

vgacon: rework Kconfig dependenciesThe list of dependencies here is phrased as an opt-out, but this is missinga lot of architectures that don't actually support VGA consoles, and someof the entries are stale: - powerpc used to support VGA consoles in the old arch/ppc codebase, but the merged arch/powerpc never did - arm lists footbridge, integrator and netwinder, but netwinder is actually part of footbridge, and integrator does not appear to have an actual VGA hardware, or list it in its ATAG or DT. - mips has a few platforms (malta, sibyte, and sni) that initialize screen_info, on everything else the console is selected but cannot actually work. - csky, hexgagon, loongarch, nios2, riscv and xtensa are not listed in the opt-out table and declare a screen_info to allow building vga_con, but this cannot work because the console is never selected.Replace this with an opt-in table that lists only the platforms thatremain. This is effectively x86, plus a couple of historic workstationand server machines that reused parts of the x86 system architecture.Reviewed-by: Javier Martinez Canillas Reviewed-by: Thomas Zimmermann Reviewed-by: Khalid Aziz Acked-by: Helge Deller Signed-off-by: Arnd Bergmann Reviewed-by: Geert Uytterhoeven Link: https://lore.kernel.org/r/20231009211845.3136536-2-arnd@kernel.orgSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/video/console/Kconfig

bb6c4507 - drm: fix up fbdev Kconfig defaults

Mon, 11 Sep 2023 20:52:53 +0000

drm: fix up fbdev Kconfig defaultsAs a result of the recent Kconfig reworks, the default settings for theframebuffer interfaces changed in unexpected ways:Configurations that leave CONFIG_FB disabled but use DRM now getDRM_FBDEV_EMULATION by default. This also turns on the deprecated /dev/fbdevice nodes for machines that don't actually want it.In turn, configurations that previously had DRM_FBDEV_EMULATION enablednow only get the /dev/fb front-end but not the more useful framebufferconsole, which is not selected any more.We had previously decided that any combination of the three frontends(FB_DEVICE, FRAMEBUFFER_CONSOLE and LOGO) should be selectable, but thenew default settings mean that a lot of defconfig files would have toget adapted.Change the defaults back to what they were in Linux 6.5: - Leave DRM_FBDEV_EMULATION turned off unless CONFIG_FB is enabled. Previously this was a hard dependency but now the two are independent. However, configurations that enable CONFIG_FB probably also want to keep the emulation for DRM, while those without FB presumably did that intentionally in the past. - Leave FB_DEVICE turned off for FB=n. Following the same logic, the deprecated option should not automatically get enabled here, most users that had FB turned off in the past do not want it, even if they want the console - Turn the FRAMEBUFFER_CONSOLE option on if DRM_FBDEV_EMULATION is set to avoid having to change defconfig files that relied on it being selected unconditionally in the past. This also makes sense since both LOGO and FB_DEVICE are now disabled by default for builds without CONFIG_FB, but DRM_FBDEV_EMULATION would make no sense if all three are disabled.Fixes: a5ae331edb02b ("drm: Drop select FRAMEBUFFER_CONSOLE for DRM_FBDEV_EMULATION")Fixes: 701d2054fa317 ("fbdev: Make support for userspace interfaces configurable")Reported-by: Geert Uytterhoeven Signed-off-by: Arnd Bergmann Reviewed-by: Javier Martinez Canillas Reviewed-by: Geert Uytterhoeven Acked-by: Thomas Zimmermann Signed-off-by: Javier Martinez Canillas Link: https://patchwork.freedesktop.org/patch/msgid/20230911205338.2385278-1-arnd@kernel.org List of files: /linux-6.15/drivers/video/console/Kconfig

55bffc81 - fbdev: Split frame buffer support in FB and FB_CORE symbols

Wed, 19 Jul 2023 08:15:37 +0000

fbdev: Split frame buffer support in FB and FB_CORE symbolsCurrently the CONFIG_FB option has to be enabled even if no legacy fbdevdrivers are needed (e.g: only to have support for framebuffer consoles).The DRM subsystem has a fbdev emulation layer, but depends on CONFIG_FBand so it can only be enabled if that dependency is enabled as well.That means fbdev drivers have to be explicitly disabled if users want toenable CONFIG_FB, only to use fbcon and/or the DRM fbdev emulation layer.This patch introduces a non-visible CONFIG_FB_CORE symbol that could beenabled just to have core support needed for CONFIG_DRM_FBDEV_EMULATION,allowing CONFIG_FB to be disabled (and automatically disabling all thefbdev drivers).Nothing from fb_backlight.o and fbmon.o is used by the DRM fbdev emulationlayer so these two objects can be compiled out when CONFIG_FB is disabled.Signed-off-by: Javier Martinez Canillas Reviewed-by: Arnd Bergmann Tested-by: Arnd Bergmann Acked-by: Helge Deller Link: https://patchwork.freedesktop.org/patch/msgid/20230719081544.741051-4-javierm@redhat.com List of files: /linux-6.15/drivers/video/console/Kconfig

74708497 - video: Move HP PARISC STI core code to shared location

Mon, 17 Apr 2023 12:56:43 +0000

video: Move HP PARISC STI core code to shared locationSTI core files have been located in console and fbdev code. Movethe source code and header to the directories for video helpers.Also update the config and build rules such that the code dependson the config symbol CONFIG_STI_CORE, which STI console and STIframebuffer select automatically.Cleans up the console makefile and prepares PARISC to implementfb_is_primary_device() within the arch/ directory. No functionalchanges.Signed-off-by: Thomas Zimmermann Acked-by: Arnd Bergmann Acked-by: Helge Deller Link: https://patchwork.freedesktop.org/patch/msgid/20230417125651.25126-12-tzimmermann@suse.de List of files: /linux-6.15/drivers/video/console/Kconfig

7283f862 - drm: Implement DRM aperture helpers under video/

Wed, 22 Jun 2022 14:01:33 +0000

drm: Implement DRM aperture helpers under video/Implement DRM's aperture helpers under video/ for sharing with othersub-systems. Remove DRM-isms from the interface. The helpers trackthe ownership of framebuffer apertures and provide hand-over fromfirmware, such as EFI and VESA, to native graphics drivers.Other subsystems, such as fbdev and vfio, also have to maintain ownershipof framebuffer apertures. Moving DRM's aperture helpers to a more publiclocation allows all subsystems to interact with each other and share acommon implementation.The aperture helpers are selected by the various firmware drivers withinDRM and fbdev, and the VGA text-console driver.The original DRM interface is kept in place for use by DRM drivers.v3: * prefix all interfaces with aperture_ (Javier) * rework and simplify documentation (Javier) * rename struct dev_aperture to struct aperture_range * rebase onto latest DRM * update MAINTAINERS entrySigned-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Tested-by: Laszlo Ersek Link: https://patchwork.freedesktop.org/patch/msgid/20220622140134.12763-3-tzimmermann@suse.de List of files: /linux-6.15/drivers/video/console/Kconfig

aec499c7 - nds32: Remove the architecture

Wed, 02 Mar 2022 07:42:45 +0000

nds32: Remove the architectureThe nds32 architecture, also known as AndeStar V3, is a custom 32-bitRISC target designed by Andes Technologies. Support was added to thekernel in 2016 as the replacement RISC-V based V5 processors werealready announced, and maintained by (current or former) Andesemployees.As explained by Alan Kao, new customers are now all using RISC-V,and all known nds32 users are already on longterm stable kernelsprovided by Andes, with no development work going into mainlinesupport any more.While the port is still in a reasonably good shape, it only getsworse over time without active maintainers, so it seems bestto remove it before it becomes unusable. As always, if it turnsout that there are mainline users after all, and they volunteerto maintain the port in the future, the removal can be reverted.Link: https://lore.kernel.org/linux-mm/YhdWNLUhk+x9RAzU@yamatobi.andestech.com/Link: https://lore.kernel.org/lkml/20220302065213.82702-1-alankao@andestech.com/Link: https://www.andestech.com/en/products-solutions/andestar-architecture/Signed-off-by: Alan Kao [arnd: rewrite changelog to provide more background]Signed-off-by: Arnd Bergmann List of files: /linux-6.15/drivers/video/console/Kconfig

a3f781a9 - fbcon: Add option to enable legacy hardware acceleration

Wed, 02 Feb 2022 13:55:31 +0000

fbcon: Add option to enable legacy hardware accelerationAdd a config option CONFIG_FRAMEBUFFER_CONSOLE_LEGACY_ACCELERATION toenable bitblt and fillrect hardware acceleration in the framebufferconsole. If disabled, such acceleration will not be used, even if it issupported by the graphics hardware driver.If you plan to use DRM as your main graphics output system, you shoulddisable this option since it will prevent compiling in code which isn'tused later on when DRM takes over.For all other configurations, e.g. if none of your graphic cards supportDRM (yet), DRM isn't available for your architecture, or you can't besure that the graphic card in the target system will support DRM, youmost likely want to enable this option.In the non-accelerated case (e.g. when DRM is used), the inlinedfb_scrollmode() function is hardcoded to return SCROLL_REDRAW and as such thecompiler is able to optimize much unneccesary code away.In this v3 patch version I additionally changed the GETVYRES() and GETVXRES()macros to take a pointer to the fbcon_display struct. This fixes the build whenconsole rotation is enabled and helps the compiler again to optimize out code.Signed-off-by: Helge Deller Cc: stable@vger.kernel.org # v5.10+Signed-off-by: Helge Deller Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20220202135531.92183-4-deller@gmx.de List of files: /linux-6.15/drivers/video/console/Kconfig

0bbadafd - um: allow disabling NO_IOMEM

Fri, 05 Mar 2021 12:19:51 +0000

um: allow disabling NO_IOMEMAdjust the kconfig a little to allow disabling NO_IOMEM in UML. Tomake an "allyesconfig" with CONFIG_NO_IOMEM=n build, adjust a fewKconfig things elsewhere and add dummy asm/fb.h and asm/vga.h files.Signed-off-by: Johannes Berg Signed-off-by: Richard Weinberger List of files: /linux-6.15/drivers/video/console/Kconfig

7ff3f14d - parisc/sticon: Add user font support

Mon, 12 Oct 2020 08:44:52 +0000

parisc/sticon: Add user font supportThis is a major rework of the sticon (parisc text console) driver inorder to support user font support.Usually one want to use the stifb (parisc framebuffer driver) which isbased on fbcon and does support fonts and colors, but some old machines(e.g. HP 730 workstations) don't provide a supported stifb graphic card,and for those user fonts are preferred.This patch drops unused code for software cursor and scrollback,enhances the debug output and adds better documentation.The code was tested on various machines with byte-mode and word-modegraphic cards on GSC- and PCI-busses.Signed-off-by: Helge Deller List of files: /linux-6.15/drivers/video/console/Kconfig

973c096f - vgacon: remove software scrollback support

Wed, 09 Sep 2020 21:53:50 +0000

vgacon: remove software scrollback supportYunhai Zhang recently fixed a VGA software scrollback bug in commitebfdfeeae8c0 ("vgacon: Fix for missing check in scrollback handling"),but that then made people look more closely at some of this code, andthere were more problems on the vgacon side, but also the fbcon softwarescrollback.We don't really have anybody who maintains this code - probably becausenobody actually _uses_ it any more. Sure, people still use both VGA andthe framebuffer consoles, but they are no longer the main userinterfaces to the kernel, and haven't been for decades, so these kindsof extra features end up bitrotting and not really being used.So rather than try to maintain a likely unused set of code, I'll justaggressively remove it, and see if anybody even notices. Maybe thereare people who haven't jumped on the whole GUI badnwagon yet, and thinkit's just a fad. And maybe those people use the scrollback code.If that turns out to be the case, we can resurrect this again, oncewe've found the sucker^Wmaintainer for it who actually uses it.Reported-by: NopNop Nop Tested-by: Willy Tarreau Cc: 张云海 Acked-by: Andy Lutomirski Acked-by: Willy Tarreau Reviewed-by: Greg Kroah-Hartman Signed-off-by: Linus Torvalds List of files: /linux-6.15/drivers/video/console/Kconfig

a7f7f624 - treewide: replace '---help---' in Kconfig files with 'help'

Sat, 13 Jun 2020 16:50:22 +0000

treewide: replace '---help---' in Kconfig files with 'help'Since commit 84af7a6194e4 ("checkpatch: kconfig: prefer 'help' over'---help---'"), the number of '---help---' has been graduallydecreasing, but there are still more than 2400 instances.This commit finishes the conversion. While I touched the lines,I also fixed the indentation.There are a variety of indentation styles found. a) 4 spaces + '---help---' b) 7 spaces + '---help---' c) 8 spaces + '---help---' d) 1 space + 1 tab + '---help---' e) 1 tab + '---help---' (correct indentation) f) 1 tab + 1 space + '---help---' g) 1 tab + 2 spaces + '---help---'In order to convert all of them to 1 tab + 'help', I ran thefollowing commend: $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/'Signed-off-by: Masahiro Yamada List of files: /linux-6.15/drivers/video/console/Kconfig

52733e95 - video: Fix Kconfig indentation

Wed, 20 Nov 2019 13:38:38 +0000

video: Fix Kconfig indentationAdjust indentation from spaces to tab (+optional two spaces) as incoding style with command like: $ sed -e 's/^ /\t/' -i */KconfigSigned-off-by: Krzysztof Kozlowski Cc: Jiri Kosina Cc: Lee Jones Cc: Daniel Thompson Cc: Jingoo Han Signed-off-by: Bartlomiej Zolnierkiewicz Link: https://patchwork.freedesktop.org/patch/msgid/20191120133838.13132-1-krzk@kernel.org List of files: /linux-6.15/drivers/video/console/Kconfig

e018bc28 - console/dummycon: Remove bogus depends on from DUMMY_CONSOLE

Wed, 18 Dec 2019 21:44:43 +0000

console/dummycon: Remove bogus depends on from DUMMY_CONSOLESince commit [1] consolidated console configuration indrivers/video/console, DUMMY_CONSOLE has always been enabled, since thedependency is always satisfied.There is no point in trying to allow it to be configured out, since(a) it's tiny, and (b) if VT_CONSOLE is enabled, we must have a workingconsole driver by the time con_init(vt.c) runs, and only dummycon isguaranteed to work (vgacon may be configured in, but that doesn't meanwe have a VGA device).So just remove the fake dependency.[1] https://git.kernel.org/pub/scm/linux/kernel/git/tglx/history.git/commit?id=31d2a7d36d6989c714b792ec00358ada24c039e7Signed-off-by: Arvind Sankar Link: https://lore.kernel.org/r/20191218214506.49252-2-nivedita@alum.mit.eduSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/video/console/Kconfig

ec8f24b7 - treewide: Add SPDX license identifier - Makefile/Kconfig

Sun, 19 May 2019 12:07:45 +0000

treewide: Add SPDX license identifier - Makefile/KconfigAdd SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any formThese files fall under the project license, GPL v2 only. The resulting SPDXlicense identifier is: GPL-2.0-onlySigned-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/video/console/Kconfig

15f4c357 - fbcon: Only allow FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER if fbdev is builtin

Fri, 10 Aug 2018 15:23:01 +0000

fbcon: Only allow FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER if fbdev is builtinHaving FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER with fbdev+fbcon being buildas a module does not make much sense.Having FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER only when fbdev+fbcon arebuiltin was always the intention, hence the =y checks but they werechecking the wrong option, fbcon is build as part of fb.ko, so we mustcheck for FB=y.Signed-off-by: Hans de Goede Signed-off-by: Bartlomiej Zolnierkiewicz List of files: /linux-6.15/drivers/video/console/Kconfig