Changes in sysfs-gpio

cb9f145f638d7afa633632a9290d6ad06caeb8ee - Merge remote-tracking branch 'drm/drm-next' into msm-next-robclark

Sat, 01 Nov 2025 13:47:30 +0100

Merge remote-tracking branch 'drm/drm-next' into msm-next-robclarkBack-merge drm-next to get caught up.Signed-off-by: Rob Clark List of files: /linux/Documentation/ABI/obsolete/sysfs-gpio

f088104d837a991c65e51fa30bb4196169b3244d - Merge drm/drm-next into drm-intel-gt-next

Tue, 16 Sep 2025 12:53:20 +0200

Merge drm/drm-next into drm-intel-gt-nextBackmerge in order to get the commit: 048832a3f400 ("drm/i915: Refactor shmem_pwrite() to use kiocb and write_iter")To drm-intel-gt-next as there are followup fixes to be applied.Signed-off-by: Joonas Lahtinen List of files: /linux/Documentation/ABI/obsolete/sysfs-gpio

a53d0cf7f1cb3182ad533ff5cacfa5fd29c419ad - Merge commit 'linus' into core/bugs, to resolve conflicts

Tue, 05 Aug 2025 11:15:34 +0200

Merge commit 'linus' into core/bugs, to resolve conflictsResolve conflicts with this commit that was developed in parallelduring the merge window: 8c8efa93db68 ("x86/bug: Add ARCH_WARN_ASM macro for BUG/WARN asm code sharing with Rust") Conflicts: arch/riscv/include/asm/bug.h arch/x86/include/asm/bug.hSigned-off-by: Ingo Molnar List of files: /linux/Documentation/ABI/obsolete/sysfs-gpio

8b87f67b4c87452e21721887fa8dec1f4c6b2b7c - Merge branch 'next' into for-linus

Wed, 08 Oct 2025 06:53:13 +0200

Merge branch 'next' into for-linusPrepare input updates for 6.18 merge window. List of files: /linux/Documentation/ABI/obsolete/sysfs-gpio

4b051897df2375414587a245ecb9bb1a4d26b3b8 - Merge tag 'v6.17-rc2' into HEAD

Thu, 21 Aug 2025 20:46:49 +0200

Merge tag 'v6.17-rc2' into HEADSync up with mainline to bring in changes to include/linux/sprintf.h List of files: /linux/Documentation/ABI/obsolete/sysfs-gpio

b4d90dbc4c1bc4bd3eb2d2989330af0eb95c98e8 - Merge drm/drm-next into drm-misc-next-fixes

Mon, 15 Sep 2025 10:23:28 +0200

Merge drm/drm-next into drm-misc-next-fixesBackmerging to drm-misc-next-fixes to get features and fixes fromv6.17-rc6.Signed-off-by: Thomas Zimmermann List of files: /linux/Documentation/ABI/obsolete/sysfs-gpio

702fdf3513b045f596f836d9a4b8672c76f11834 - Merge drm/drm-next into drm-intel-next

Wed, 10 Sep 2025 14:01:42 +0200

Merge drm/drm-next into drm-intel-nextCatching up with some display dependencies.Signed-off-by: Rodrigo Vivi List of files: /linux/Documentation/ABI/obsolete/sysfs-gpio

ca994e8922f25f7fed2075098f185cf198109eaa - Merge drm/drm-next into drm-xe-next

Tue, 12 Aug 2025 14:58:37 +0200

Merge drm/drm-next into drm-xe-nextBring v6.17-rc1 to propagate commits from other subsystems, particularlyPCI, which has some new functions needed for SR-IOV integration.Signed-off-by: Lucas De Marchi List of files: /linux/Documentation/ABI/obsolete/sysfs-gpio

08c51f5bddc81c8c97c1eb11861b0dc009e5ccd8 - Merge drm/drm-next into drm-misc-n

Mon, 11 Aug 2025 14:37:45 +0200

Merge drm/drm-next into drm-misc-nUpdating drm-misc-next to the state of v6.17-rc1. Begins a new releasecycle.Signed-off-by: Thomas Zimmermann List of files: /linux/Documentation/ABI/obsolete/sysfs-gpio

8d2b0853add1d7534dc0794e3c8e0b9e8c4ec640 - Merge drm/drm-fixes into drm-misc-fixes

Mon, 11 Aug 2025 16:49:06 +0200

Merge drm/drm-fixes into drm-misc-fixesUpdating drm-misc-fixes to the state of v6.17-rc1. Begins a new releasecycle.Signed-off-by: Thomas Zimmermann List of files: /linux/Documentation/ABI/obsolete/sysfs-gpio

fcb117e0758d1462128a50c5788555e03b48833b - Merge tag 'gpio-updates-for-v6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Tue, 29 Jul 2025 06:58:46 +0200

Merge tag 'gpio-updates-for-v6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linuxPull gpio updates from Bartosz Golaszewski: "There's one new driver (Apple SMC) and extensions to existing drivers for supporting new HW models. A lot of different impovements across drivers and in core GPIO code. Details on that are in the signed tag as usual. We managed to remove some of the legacy APIs. Arnd Bergmann started to work on making the legacy bits optional so that we may compile them only for older platforms that still really need them. Rob Herring has done a lot of work to convert legacy .txt dt-bindings for GPIO controllers to YAML. There are only a few left now in the GPIO tree. A big part of the commits in this PR concern the conversion of GPIO drivers to using the new line value setter callbacks. This conversion is now complete treewide (unless I've missed something) and once all the changes from different trees land in mainline, I'll send you another PR containing a commit dropping the legacy callbacks from the tree. As the quest to pay back technical dept never really ends, we're starting another set of interface conversions, this time it's about moving fields specific to only a handful of drivers using the gpio-mmio helper out of the core gpio_chip structure that every controller implements and uses. This cycle we introduce a new set of APIs and convert a few drivers under drivers/gpio/, next cycle we'll convert remaining modules treewide (in gpio, pinctrl and mfd trees) and finally remove the old interfaces and move the gpio-mmio fields into their own structure wrapping gpio_chip. One last change I should mention here is the rework of the sysfs interface. In 2016, we introduced the GPIO character device as the preferred alternative to the sysfs class under /sys/class/gpio. While it has seen a wide adoption with the help of its user-space counterpart - libgpiod - there are still users who prefer the simplicity of sysfs. As far as the GPIO subsystem is concerned, the problem is not the existince of the GPIO class as such but rather the fact that it exposes the global GPIO numbers to the user-space, stopping us from ever being able to remove the numberspace from the kernel. To that end, this release we introduced a parallel, limited sysfs interface that doesn't expose these numbers and only implements a subset of features that are relevant to the existing users. This is a result of several discussions over the course of last year and should allow us to remove the legacy part some time in the future. Summary: GPIOLIB core: - introduce a parallel, limited sysfs user ABI that doesn't expose the global GPIO numbers to user-space while maintaining backward compatibility with the end goal of it completely replacing the existing interface, allowing us to remove it - remove the legacy devm_gpio_request() routine which has no more users - start the process of allowing to compile-out the legacy parts of the GPIO core for users who don't need it by introducing a new Kconfig option: GPIOLIB_LEGACY - don't use global GPIO numbers in debugfs output from the core code (drivers still do it, the work is ongoing) - start the process of moving the fields specific to the gpio-mmio helper out of the core struct gpio_chip into their own structure that wraps it: create a new header with modern interfaces and convert several drivers to using it - remove the platform data structure associated with the gpio-mmio helper from the kernel after having converted all remaining users to generic device properties - remove legacy struct gpio definition as it has no more users New drivers: - add the GPIO driver for the Apple System Management Controller Driver improvements: - add support for new models to gpio-adp5585, gpio-tps65219 and gpio-pca953x - extend the interrupt support in gpio-loongson-64bit - allow to mark the simulated GPIO lines as invalid in gpio-sim - convert all remaining GPIO drivers to using the new GPIO value setter callbacks - convert gpio-rcar to using simple device power management ops callbacks - don't check if current direction of a line is output before setting the value in gpio-pisosr and ti-fpc202: the GPIO core already handles that - also drop unneeded GPIO range checks in drivers, the core already makes sure we're within bounds when calling driver callbacks - use dev_fwnode() where applicable across GPIO drivers - set line value in gpio-zynqmp-modepin and gpio-twl6040 when the user wants to change direction of the pin to output even though these drivers don't need to do anything else to actually set the direction, otherwise a call like gpiod_direction_output(d, 1) will not result in the line driver high - remove the reduntant call to pm_runtime_mark_last_busy() from gpio-arizona - use lock guards in gpio-cadence and gpio-mxc - check the return values of regmap functions in gpio-wcd934x and gpio-tps65912 - use better regmap interfaces in gpio-wcove and gpio-pca953x - remove dummy GPIO chip callbacks from several drivers in cases where the GPIO core can already handle their absence - allow building gpio-palmas as a module Fixes: - use correct bit widths (according to the documentation) in gpio-virtio Device-tree bindings: - convert several of the legacy .txt documents for many different devices to YAML, improving automatic validation - create a "trivial" GPIO DT schema that covers a wide range of simple hardware that share a set of basic GPIO properties - document new HW: Apple MAC SMC GPIO block and adp5589 I/O expander - document a new model for pca95xx - add and/or remove properties in YAML documents for gpio-rockchip, fsl,qoriq-gpio, arm,pl061 and gpio-xilinx Misc: - some minor refactoring in several places, adding/removing forward declarations, moving defines to better places, constify the arguments in some functions, remove duplicate includes, etc. - documentation updates"* tag 'gpio-updates-for-v6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (202 commits) MIPS: alchemy: gpio: use new GPIO line value setter callbacks for the remaining chips gpiolib: enable CONFIG_GPIOLIB_LEGACY even for !GPIOLIB gpio: virtio: Fix config space reading. gpiolib: make legacy interfaces optional dt-bindings: gpio: rockchip: Allow use of a power-domain gpiolib: of: add forward declaration for struct device_node power: reset: macsmc-reboot: Add driver for rebooting via Apple SMC gpio: Add new gpio-macsmc driver for Apple Macs mfd: Add Apple Silicon System Management Controller soc: apple: rtkit: Make shmem_destroy optional dt-bindings: mfd: Add Apple Mac System Management Controller dt-bindings: power: reboot: Add Apple Mac SMC Reboot Controller dt-bindings: gpio: Add Apple Mac SMC GPIO block gpio: cadence: Remove duplicated include in gpio-cadence.c gpio: tps65219: Add support for TI TPS65214 PMIC gpio: tps65219: Update _IDX & _OFFSET macro prefix gpio: sysfs: Fix an end of loop test in gpiod_unexport() dt-bindings: gpio: Convert qca,ar7100-gpio to DT schema dt-bindings: gpio: Convert maxim,max3191x to DT schema dt-bindings: gpio: fsl,qoriq-gpio: Add missing mpc8xxx compatibles ... List of files: /linux/Documentation/ABI/obsolete/sysfs-gpio

4fa93223e03eea3243db83786f556b6c1494de3e - gpio: sysfs: export the GPIO directory locally in the gpiochip directory

Fri, 04 Jul 2025 14:58:55 +0200

gpio: sysfs: export the GPIO directory locally in the gpiochip directoryAs a way to allow the user-space to stop referring to GPIOs by theirglobal numbers, introduce a parallel group of line attributes forexported GPIO that live inside the GPIO chip class device and arereferred to by their HW offset within their parent chip.Reviewed-by: Linus Walleij Link: https://lore.kernel.org/r/20250704-gpio-sysfs-chip-export-v4-8-9289d8758243@linaro.orgSigned-off-by: Bartosz Golaszewski List of files: /linux/Documentation/ABI/obsolete/sysfs-gpio

2028f854b3f5b3816cd5d5dd83057a873eddc4d6 - gpio: sysfs: add a parallel class device for each GPIO chip using device IDs

Fri, 04 Jul 2025 14:58:49 +0200

gpio: sysfs: add a parallel class device for each GPIO chip using device IDsIn order to enable moving away from the global GPIO numberspace-basedexporting of lines over sysfs: add a parallel, per-chip entry under/sys/class/gpio/ for every registered GPIO chip, denoted by device IDin the file name and not its base GPIO number.Compared to the existing chip group: it does not contain the "base"attribute as the goal of this change is to not refer to GPIOs by theirglobal number from user-space anymore. It also contains its own,per-chip export/unexport attribute pair which allow to export lines bytheir hardware offset within the chip.Caveat #1: the new device cannot be a link to (or be linked to by) theexisting "gpiochip" entry as we cannot create links in/sys/class/xyz/.Caveat #2: the new entry cannot be named "gpiochipX" as it couldconflict with devices whose base is statically defined to a low number.Let's go with "chipX" instead.While at it: the chip label is unique so update the untrue statementwhen extending the docs.Acked-by: Linus Walleij Link: https://lore.kernel.org/r/20250704-gpio-sysfs-chip-export-v4-2-9289d8758243@linaro.orgSigned-off-by: Bartosz Golaszewski List of files: /linux/Documentation/ABI/obsolete/sysfs-gpio

1ae86030745013d9d54fc287c1ce875f7ddd99e6 - Documentation: gpio: document the active_low field in the sysfs ABI

Tue, 10 Jun 2025 16:38:17 +0200

Documentation: gpio: document the active_low field in the sysfs ABIExported GPIO lines also have the active_low attribute which is notdocumented. Add a short mention for it.Reviewed-by: Linus Walleij Link: https://lore.kernel.org/r/20250610-gpio-sysfs-chip-export-v1-2-a8c7aa4478b1@linaro.orgSigned-off-by: Bartosz Golaszewski List of files: /linux/Documentation/ABI/obsolete/sysfs-gpio

5ed0d32805c19cfa5f03a25ec7e041dc845d3062 - Documentation: gpio: undocument removed behavior

Tue, 10 Jun 2025 16:38:16 +0200

Documentation: gpio: undocument removed behaviorSince commit 700cdf7ed00f ("gpio: sysfs: make the sysfs export behaviorconsistent"), named GPIO lines are no longer exported in sysfs as linksnamed after the them. Drop the misleading bit from the ABI docs.Reviewed-by: Linus Walleij Link: https://lore.kernel.org/r/20250610-gpio-sysfs-chip-export-v1-1-a8c7aa4478b1@linaro.orgSigned-off-by: Bartosz Golaszewski List of files: /linux/Documentation/ABI/obsolete/sysfs-gpio

a23e1966932464e1c5226cb9ac4ce1d5fc10ba22 - Merge branch 'next' into for-linus

Mon, 15 Jul 2024 23:03:44 +0200

Merge branch 'next' into for-linusPrepare input updates for 6.11 merge window. List of files: /linux/Documentation/ABI/obsolete/sysfs-gpio

6f47c7ae8c7afaf9ad291d39f0d3974f191a7946 - Merge tag 'v6.9' into next

Tue, 28 May 2024 06:37:18 +0200

Merge tag 'v6.9' into nextSync up with the mainline to bring in the new cleanup API. List of files: /linux/Documentation/ABI/obsolete/sysfs-gpio

60a2f25de7b8b785baee2932db932ae9a5b8c86d - Merge drm/drm-next into drm-intel-gt-next

Thu, 16 May 2024 09:33:01 +0200

Merge drm/drm-next into drm-intel-gt-nextSome display refactoring patches are needed in order to allow conflict-less merging.Signed-off-by: Tvrtko Ursulin List of files: /linux/Documentation/ABI/obsolete/sysfs-gpio

594ce0b8a998aa4d05827cd7c0d0dcec9a1e3ae2 - Merge topic branches 'clkdev' and 'fixes' into for-linus

Mon, 10 Jun 2024 13:03:21 +0200

Merge topic branches 'clkdev' and 'fixes' into for-linus List of files: /linux/Documentation/ABI/obsolete/sysfs-gpio

b228ab57e51b62663a80ca820c87ba2650583f08 - Merge branch 'master' into mm-stable

Mon, 18 Mar 2024 17:55:12 +0100

Merge branch 'master' into mm-stable List of files: /linux/Documentation/ABI/obsolete/sysfs-gpio