Changes in Kconfig

2f4230fad9a7af4ebfbadbc3df5c1d99dc9320b1 - fbdev: Wrap fbcon updates from vga-switcheroo in helper

Wed, 27 May 2026 17:14:04 +0200

fbdev: Wrap fbcon updates from vga-switcheroo in helperHandle console remapping in fbcon in fb_switch_output(). Vga-switcherooinvokes this functionality before switching physical outputs to a newgraphics device. Open-coding fbcon state in vga-switcheroo exposed fbdevimplementation details.Vga-switcheroo is used for switching physical outputs among graphicshardware. This functionality is only supported by DRM drivers. A laterupdate will further move fb_switch_output() into DRM's fbdev emulation;thus fully decoupling vga-switcheroo from fbdev.v3:- remove Kconfig dependency related to fbcon (Geert)v2:- use '#if defined' (Helge)Signed-off-by: Thomas Zimmermann Signed-off-by: Helge Deller List of files: /linux/drivers/gpu/vga/Kconfig

1d38fe6ee6a874675ca3bba6b48e69a0e6176ffc - PCI/VGA: Move vgaarb to drivers/pci

Thu, 24 Feb 2022 23:47:43 +0100

PCI/VGA: Move vgaarb to drivers/pciThe VGA arbiter is really PCI-specific and doesn't depend on any GPUthings. Move it to the PCI subsystem.Note that misc_init() must be called before vga_arb_device_init(). Theseare both subsys_initcalls, so this ordering depends on the link order,which is determined by drivers/Makefile: obj-y += pci/ obj-y += char/ <-- misc_init() obj-y += gpu/ <-- vga_arb_device_init() (before this commit)The drivers/pci/ subsys_initcalls are called *before* misc_init(), soconvert vga_arb_device_init() to subsys_initcall_sync(), which is calledafter *all* subsys_initcalls.Link: https://lore.kernel.org/r/20220224224753.297579-2-helgaas@kernel.orgSigned-off-by: Bjorn Helgaas List of files: /linux/drivers/gpu/vga/Kconfig

d917e6466e99570b10fab7f04ae6bbcc326f05ec - vga: Fix Kconfig indentation

Wed, 20 Nov 2019 14:33:27 +0100

vga: 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 Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20191120133327.6519-1-krzk@kernel.org List of files: /linux/drivers/gpu/vga/Kconfig

6116b892bd4fd0ddc5f30566a556218bb2e1a9b6 - vga_switcheroo: Depend upon fbcon being built-in, if enabled

Mon, 24 Jun 2019 11:21:53 +0200

vga_switcheroo: Depend upon fbcon being built-in, if enabledFixes linking fail when fbcon/fbdev is modular and vgaswitcheroo isenabled:x86_64-linux-gnu-ld: drivers/gpu/vga/vga_switcheroo.o: in function `vga_switchto_stage2':vga_switcheroo.c:(.text+0x997): undefined reference to `fbcon_remap_all'Unfortunately this means that in a default allmodconfig we will disable vgaswitcheroo.v2: I first tried to fix this with an EXPORT_SYMBOL, but vga_switcheroo isnever a module, so this doesn't work.Reported-by: Stephen Rothwell Reported-by: kbuild test robot Fixes: 1cd51b5d200d ("vgaswitcheroo: call fbcon_remap_all directly")Signed-off-by: Daniel Vetter Cc: Stephen Rothwell Cc: Lukas Wunner Cc: Daniel Vetter Cc: Sam Ravnborg Cc: Maarten Lankhorst Cc: David Airlie Cc: Daniel Vetter Cc: Maxime Ripard Cc: Sean Paul Cc: Bartlomiej Zolnierkiewicz Cc: Hans de Goede Cc: Yisheng Xie Cc: linux-fbdev@vger.kernel.orgCc: Daniel Thompson Cc: Lee Jones Cc: dri-devel@lists.freedesktop.orgCc: linux-fbdev@vger.kernel.orgSigned-off-by: Maarten Lankhorst Link: https://patchwork.freedesktop.org/patch/msgid/20190624092153.23375-1-daniel.vetter@ffwll.ch List of files: /linux/drivers/gpu/vga/Kconfig

ec8f24b7faaf3d4799a7c3f4c1b87f6b02778ad1 - treewide: Add SPDX license identifier - Makefile/Kconfig

Sun, 19 May 2019 14:07:45 +0200

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/drivers/gpu/vga/Kconfig

94e8e8e97661dc3c2a4c253755f6bfe9e2e697f3 - vga-switcheroo: make PCI dependency explicit

Sat, 05 Jan 2019 11:05:58 +0100

vga-switcheroo: make PCI dependency explicitThis driver depends on the PCI infrastructure, but the dependency hasnot been explicitly called out.Fixes: 5d32a66541c46 ("PCI/ACPI: Allow ACPI to be built without CONFIG_PCI set")Signed-off-by: Sinan Kaya Reviewed-by: Lukas Wunner Acked-by: Daniel Vetter Signed-off-by: Rafael J. Wysocki List of files: /linux/drivers/gpu/vga/Kconfig

5fb94e9ca333f0fe1d96de06704a79942b3832c3 - docs: Fix some broken references

Tue, 08 May 2018 20:14:57 +0200

docs: Fix some broken referencesAs we move stuff around, some doc references are broken. Fix some ofthem via this script: ./scripts/documentation-file-ref-check --fixManually checked if the produced result is valid, removing a fewfalse-positives.Acked-by: Takashi Iwai Acked-by: Masami Hiramatsu Acked-by: Stephen Boyd Acked-by: Charles Keepax Acked-by: Mathieu Poirier Reviewed-by: Coly Li Signed-off-by: Mauro Carvalho Chehab Acked-by: Jonathan Corbet List of files: /linux/drivers/gpu/vga/Kconfig

1150f25441a7dad818fa4366d01c45c2fef1cbe8 - vga: compile fix, disable vga for s390

Thu, 29 Nov 2012 14:40:40 +0100

vga: compile fix, disable vga for s390Signed-off-by: Jan Glauber Signed-off-by: Martin Schwidefsky List of files: /linux/drivers/gpu/vga/Kconfig

343d4a79fdaeb8753201324c03fbc108f4e62636 - vga-switcheroo: select VGA arbitration.

Mon, 16 Apr 2012 20:01:17 +0200

vga-switcheroo: select VGA arbitration.Since Matthew's changes we have to select arbitration.Reported-by: devh on #radeonSigned-off-by: Dave Airlie List of files: /linux/drivers/gpu/vga/Kconfig

6a108a14fa356ef607be308b68337939e56ea94e - kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT

Thu, 20 Jan 2011 23:44:16 +0100

kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERTThe meaning of CONFIG_EMBEDDED has long since been obsoleted; the optionis used to configure any non-standard kernel with a much larger scope thanonly small devices.This patch renames the option to CONFIG_EXPERT in init/Kconfig and fixesreferences to the option throughout the kernel. A new CONFIG_EMBEDDEDoption is added that automatically selects CONFIG_EXPERT when enabled andcan be used in the future to isolate options that should only beconsidered for embedded systems (RISC architectures, SLOB, etc).Calling the option "EXPERT" more accurately represents its intention: onlyexpert users who understand the impact of the configuration changes theyare making should enable it.Reviewed-by: Ingo Molnar Acked-by: David Woodhouse Signed-off-by: David Rientjes Cc: Greg KH Cc: "David S. Miller" Cc: Jens Axboe Cc: Arnd Bergmann Cc: Robin Holt Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds List of files: /linux/drivers/gpu/vga/Kconfig

ca117d6df95a8f809d37d74c2d715ec3c8c3a4ed - vga: fix kconfig text typos

Mon, 17 May 2010 19:54:04 +0200

vga: fix kconfig text typosFix typos in vga/Kconfig fileand use GPU (upper case) consistently.Signed-off-by: Randy Dunlap Cc: dri-devel@lists.freedesktop.orgSigned-off-by: Dave Airlie List of files: /linux/drivers/gpu/vga/Kconfig

03a2c4d76c9e99b80d74ab8a4f344e135a5ae44b - Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6

Thu, 04 Mar 2010 16:49:37 +0100

Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6* 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (151 commits) vga_switcheroo: disable default y by new rules. drm/nouveau: fix *staging* driver build with switcheroo off. drm/radeon: fix typo in Makefile vga_switcheroo: fix build on platforms with no ACPI drm/radeon: Fix printf type warning in 64bit system. drm/radeon/kms: bump the KMS version number for square tiling support. vga_switcheroo: initial implementation (v15) drm/radeon/kms: do not disable audio engine twice Revert "drm/radeon/kms: disable HDMI audio for now on rv710/rv730" drm/radeon/kms: do not preset audio stuff and start timer when not using audio drm/radeon: r100/r200 ums: block ability for userspace app to trash 0 page and beyond drm/ttm: fix function prototype to match implementation drm/radeon: use ALIGN instead of open coding it drm/radeon/kms: initialize set_surface_reg reg for rs600 asic drm/i915: Use a dmi quirk to skip a broken SDVO TV output. drm/i915: enable/disable LVDS port at DPMS time drm/i915: check for multiple write domains in pin_and_relocate drm/i915: clean-up i915_gem_flush_gpu_write_domain drm/i915: reuse i915_gpu_idle helper drm/i915: ensure lru ordering of fence_list ...Fixed trivial conflicts in drivers/gpu/vga/Kconfig List of files: /linux/drivers/gpu/vga/Kconfig

d424b925f7092b9d95e0a8556872349abe79d9b6 - vga_switcheroo: disable default y by new rules.

Wed, 03 Mar 2010 00:26:35 +0100

vga_switcheroo: disable default y by new rules.Another undocumented rule of kernel folklore, no default yconfig options anymore, apparantly hinting to distros they mightwant something isn't preferred anymore.Signed-off-by: Dave Airlie List of files: /linux/drivers/gpu/vga/Kconfig

6a9ee8af344e3bd7dbd61e67037096cdf7f83289 - vga_switcheroo: initial implementation (v15)

Mon, 01 Feb 2010 06:38:10 +0100

vga_switcheroo: initial implementation (v15)Many new laptops now come with 2 gpus, one to be used for low powermodes and one for gaming/on-ac applications. These GPUs are typicallywired to the laptop panel and VGA ports via a multiplexer unit whichis controlled via ACPI methods.4 combinations of systems typically exist - with 2 ACPI methods.Intel/ATI - Lenovo W500/T500 - use ATPX ACPI methodATI/ATI - some ASUS - use ATPX ACPI MethodIntel/Nvidia - - use _DSM ACPI methodNvidia/Nvidia - - use _DSM ACPI method.TODO:This patch adds support for the ATPX method and initial bitsfor the _DSM methods that need to written by someone withaccess to the hardware.Add a proper non-debugfs interface - need to get some propertesting first.v2: add power up/down support for both deviceson W500 puts i915/radeon into D3 and cuts power to radeon.v3: redo probing methods, no DMI list, drm devices call toregister with switcheroo, it tries to find an ATPX method onany device and once there is two devices + ATPX it inits theswitcher.v4: ATPX msg handling using buffers - should work on more machinesv5: rearchitect after more mjg59 discussion - move ATPX handling to radeon driver.v6: add file headers + initial nouveau bits (to be filled out).v7: merge delayed switcher code.v8: avoid suspend/resume of gpu that is offv9: rearchitect - mjg59 is always right. - move all ATPX code toradeon, should allow simpler DSM also proper ATRM handlingv10: add ATRM support for radeon BIOS, add mutex to lock vgasr_privv11: fix bug in resuming Intel for 2nd time.v12: start fixing up nvidia code blindly.v13: blindly guess at finishing nvidia codev14: remove radeon audio hacks - fix up intel resume more like upstreamv15: clean up printks + remove unnecessary igd/dis pointersmount debugfs/sys/kernel/debug/vgaswitcheroo/switch - should exist if ATPX detected + 2 cards.DIS - immediate change to discreteIGD - immediate change to IGDDDIS - delayed change to discreteDIGD - delayed change to IGDON - turn on not in useOFF - turn off not in useTested on W500 (Intel/ATI) and T500 (Intel/ATI)Signed-off-by: Dave Airlie List of files: /linux/drivers/gpu/vga/Kconfig

36028f3383872eefb558a4aae4c12ec2b5fa640f - vgaarb: Add user selectability of the number of GPUS in a system

Wed, 03 Feb 2010 02:45:01 +0100

vgaarb: Add user selectability of the number of GPUS in a systemUpdate the VGA Arbiter to allow the user to select the numberof GPU's supported in a system.v2: simplify setting of MAX_USER_CARDS, revert back to original default of 16Signed-off-by: Mike Travis LKML-Reference: <4B68D51D.6090401@sgi.com>Cc: Thomas Gleixner Cc: Robin Holt Cc: Jack Steiner Cc: Ingo Molnar Cc: Jesse Barnes Cc: David Airlie Signed-off-by: Andrew Morton Signed-off-by: H. Peter Anvin List of files: /linux/drivers/gpu/vga/Kconfig

deb2d2ecd43dfc51efe71eed7128fda514da96c6 - PCI/GPU: implement VGA arbitration on Linux

Tue, 11 Aug 2009 07:52:06 +0200

PCI/GPU: implement VGA arbitration on LinuxBackground:Graphic devices are accessed through ranges in I/O or memory space. While mostmodern devices allow relocation of such ranges, some "Legacy" VGA devicesimplemented on PCI will typically have the same "hard-decoded" addresses asthey did on ISA. For more details see "PCI Bus Binding to IEEE Std 1275-1994Standard for Boot (Initialization Configuration) Firmware Revision 2.1"Section 7, Legacy Devices.The Resource Access Control (RAC) module inside the X server currently doesthe task of arbitration when more than one legacy device co-exists on the samemachine. But the problem happens when these devices are trying to be accessedby different userspace clients (e.g. two server in parallel). Their addressassignments conflict. Therefore an arbitration scheme _outside_ of the Xserver is needed to control the sharing of these resources. This documentintroduces the operation of the VGA arbiter implemented for Linux kernel.Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Tiago Vignatti Signed-off-by: Dave Airlie Signed-off-by: Jesse Barnes List of files: /linux/drivers/gpu/vga/Kconfig