lwn.git/drivers/gpio/gpiolib-of.c, branch docs-mw

gpio: move hogs into GPIO core

2026-03-16T08:51:05+00:00

Refactor line hogging code by moving the parts duplicated in gpiolib-acpi-core.c and gpiolib-of.c into gpiolib.c, leaving just the OF-specific bits in the latter. This makes fwnode the primary API for setting up hogs and allows to use software nodes in addition to ACPI and OF nodes. Reviewed-by: Mika Westerberg Reviewed-by: Linus Walleij Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/20260309-gpio-hog-fwnode-v2-2-4e61f3dbf06a@oss.qualcomm.com Signed-off-by: Bartosz Golaszewski

gpio: of: clear OF_POPULATED on hog nodes in remove path

2026-03-16T08:51:05+00:00

The previously set OF_POPULATED flag should be cleared on the hog nodes when removing the chip. Cc: stable@vger.kernel.org Fixes: 63636d956c455 ("gpio: of: Add DT overlay support for GPIO hogs") Acked-by: Linus Walleij Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/20260309-gpio-hog-fwnode-v2-1-4e61f3dbf06a@oss.qualcomm.com Signed-off-by: Bartosz Golaszewski

gpio: remove of_get_named_gpio() and

2026-03-09T09:25:34+00:00

All in-tree consumers have been converted to the descriptor-based API. Remove the deprecated of_get_named_gpio() helper, delete the header, and drop the corresponding entry from MAINTAINERS. Also remove the completed TODO item for this cleanup. Signed-off-by: Jialu Xu Reviewed-by: Linus Walleij Link: https://patch.msgid.link/02ABDA1F9E3FAF1F+20260307030623.3495092-6-xujialu@vimux.org Signed-off-by: Bartosz Golaszewski

nfc: s3fwrn5: convert to gpio descriptors

2026-03-09T09:25:34+00:00

Replace the legacy of_get_named_gpio() / gpio_request_one() / gpio_set_value() API with the descriptor-based devm_gpiod_get() / gpiod_set_value() API from , removing the dependency on . This removes the s3fwrn5_i2c_parse_dt() and s3fwrn82_uart_parse_dt() functions since devm_gpiod_get() handles both DT lookup and resource management. The gpio_en and gpio_fw_wake fields in struct phy_common are changed from int to struct gpio_desc *. Add rename quirks in gpiolib-of.c for the deprecated "s3fwrn5,en-gpios" and "s3fwrn5,fw-gpios" properties to maintain backward compatibility with old device trees. Signed-off-by: Jialu Xu Reviewed-by: Linus Walleij Link: https://patch.msgid.link/94FF47746A92BD6B+20260307030623.3495092-2-xujialu@vimux.org Signed-off-by: Bartosz Golaszewski

gpiolib: of: Only compile in MT2701 quirk when it is needed.

2025-12-17T09:24:41+00:00

The compiler cannot workout if this is actually needed or not so machines that will never need this code also get it. For example: m68k-linux-gnu-nm vmlinux | grep mt27 00135742 t of_find_mt2701_gpio Add some ugly ifdef'ery to get rid of it. Signed-off-by: Daniel Palmer Link: https://lore.kernel.org/r/20251214034045.4029590-1-daniel@thingy.jp Signed-off-by: Bartosz Golaszewski

gpiolib: of: Get rid of

2025-10-16T14:47:18+00:00

Last user of linux/gpio/legacy-of-mm-gpiochip.h is gone. Remove linux/gpio/legacy-of-mm-gpiochip.h and CONFIG_OF_GPIO_MM_GPIOCHIP Signed-off-by: Christophe Leroy Signed-off-by: Bartosz Golaszewski

gpiolib: add a common prefix to GPIO descriptor flags

2025-09-12T07:20:38+00:00

While these flags are private within drivers/gpio/, when looking at the code, it's not really clear they are GPIO-specific. Since these are GPIO descriptor flags, prepend their names with a common "GPIOD" prefix. While at it: update the flags' docs: make spelling consistent, correct outdated information, etc. Reviewed-by: Linus Walleij Link: https://lore.kernel.org/r/20250909-rename-gpio-flags-v1-1-bda208a40856@linaro.org Signed-off-by: Bartosz Golaszewski

gpio: of: initialize local variable passed to the .of_xlate() callback

2025-07-09T14:14:11+00:00

of_flags is passed down to GPIO chip's xlate function, so ensure this one is properly initialized as - if the xlate callback does nothing with it - we may end up with various configuration errors like: gpio-720 (enable): multiple pull-up, pull-down or pull-disable enabled, invalid configuration Signed-off-by: Alexander Stein Link: https://lore.kernel.org/r/20250708083829.658051-1-alexander.stein@ew.tq-group.com [Bartosz: tweaked the commit message] Signed-off-by: Bartosz Golaszewski

Merge tag 'gpio-updates-for-v6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

2025-05-27T22:22:01+00:00

Pull gpio updates from Bartosz Golaszewski: "We have three new drivers, some refactoring in the GPIO core, lots of various changes across many drivers, new configfs interface for the virtual gpio-aggregator module and DT-bindings updates. The treewide conversion of GPIO drivers to using the new value setter callbacks is ongoing with another round of GPIO drivers updated. You will also see these commits coming in from other subsystems as with the relevant changes merged into mainline last cycle, I've started converting GPIO providers located elsewhere than drivers/gpio/. GPIO core: - use more lock guards where applicable - refactor GPIO ACPI code and shrink it in the process by 8% - move GPIO ACPI quirks into a separate file - remove unneeded #ifdef - convert GPIO devres helpers to using devm_add_action() where applicable which shrinks and simplifies the code - refactor GPIO descriptor validation in GPIO consumer interfaces - don't allow setting values on input lines in the GPIO core which will take off the burden from GPIO drivers of checking this down the line - provide gpiod_is_equal() as a way of safely comparing two GPIO descriptors (the only current user is in regulator core) New drivers: - add the GPIO module for the max77759 multifunction device - add the GPIO driver for the VeriSilicon BLZP1600 GPIO controller - add the GPIO driver for the Spacemit K1 SoC Driver improvements: - convert more drivers to using the new GPIO line value setter callbacks - convert more drivers to making the irq_chip immutable as is recommended by the interrupt subsystem - extend build testing coverage by enabling more modules to be built with COMPILE_TEST=y - extend the gpio-aggregator module with a configfs interface that makes the setup easier for user-space than the existing driver-level sysfs attributes and also adds more advanced configuration features (such as referring to aggregated lines by their original names or modifying their names as exposed by the aggregated chip) - add a missing mutex_destroy() in gpio-imx-scu - add an OF polarity quirk for s5m8767 - allow building gpio-vf610 as a loadable module - make gpio-mxc not hardcode its GPIO base number with GPIO SYSFS interface disabled (another small step towards getting rid of the global GPIO numberspace) - add support for level-triggered interrupts to gpio-pca953x - don't double-check the ngpios property in gpio-ds4520 as GPIO core already does it - don't double-check the number of GPIOs in gpio-imx-scu as GPIO core already does it - remove unused callbacks from gpio-max3191x DT bindings: - add device-tree bindings for max77759, spacemit,k1 and blzp1600 (new drivers added this cycle) - document more properties for gpio-vf610 and gpio-tegra186 - document a new pca95xx variant - fix style of examples in several GPIO DT-binding documents Misc: - TODO list updates" * tag 'gpio-updates-for-v6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (123 commits) gpio: timberdale: select GPIOLIB_IRQCHIP gpio: lpc18xx: select GPIOLIB_IRQCHIP gpio: grgpio: select GPIOLIB_IRQCHIP gpio: bcm-kona: select GPIOLIB_IRQCHIP dt-bindings: gpio: vf610: add ngpios and gpio-reserved-ranges gpio: davinci: select GPIOLIB_IRQCHIP gpiolib-acpi: Update file references in the Documentation and MAINTAINERS gpiolib: acpi: Move quirks to a separate file gpiolib: acpi: Add acpi_gpio_need_run_edge_events_on_boot() getter gpiolib: acpi: Handle deferred list via new API gpiolib: acpi: Make sure we fill struct acpi_gpio_info gpiolib: acpi: Switch to use enum in acpi_gpio_in_ignore_list() gpiolib: acpi: Use temporary variable for struct acpi_gpio_info gpiolib: remove unneeded #ifdef gpio: mpc8xxx: select GPIOLIB_IRQCHIP gpio: pxa: select GPIOLIB_IRQCHIP gpio: pxa: Make irq_chip immutable gpio: timberdale: Make irq_chip immutable gpio: xgene-sb: Make irq_chip immutable gpio: davinci: Make irq_chip immutable ...

gpiolib: support parsing gpio three-cell interrupts scheme

2025-04-08T16:56:19+00:00

gpio irq which using three-cell scheme should always call instance_match() function to find the correct irqdomain. The select() function will be called with !DOMAIN_BUS_ANY, so for specific gpio irq driver, it need to set bus token explicitly, something like: irq_domain_update_bus_token(girq->domain, DOMAIN_BUS_WIRED); Signed-off-by: Yixun Lan Link: https://lore.kernel.org/r/20250408-04-gpio-irq-threecell-v4-1-fd170d5e2d2b@gentoo.org Signed-off-by: Bartosz Golaszewski