linux/drivers/mfd, branch v6.16

mfd: Fix building without CONFIG_OF

2025-06-19T10:05:30Z

Using the of_fwnode_handle() means that local 'node' variables are unused whenever CONFIG_OF is disabled for compile testing: drivers/mfd/88pm860x-core.c: In function 'device_irq_init': drivers/mfd/88pm860x-core.c:576:29: error: unused variable 'node' [-Werror=unused-variable] 576 | struct device_node *node = i2c->dev.of_node; | ^~~~ drivers/mfd/max8925-core.c: In function 'max8925_irq_init': drivers/mfd/max8925-core.c:659:29: error: unused variable 'node' [-Werror=unused-variable] 659 | struct device_node *node = chip->dev->of_node; | ^~~~ drivers/mfd/twl4030-irq.c: In function 'twl4030_init_irq': drivers/mfd/twl4030-irq.c:679:46: error: unused variable 'node' [-Werror=unused-variable] 679 | struct device_node *node = dev->of_node; | ^~~~ Replace these with the corresponding dev_fwnode() lookups that keep the code simpler in addition to avoiding the warnings. Fixes: e3d44f11da04 ("mfd: Switch to irq_domain_create_*()") Signed-off-by: Arnd Bergmann Reviewed-by: Jiri Slaby Link: https://lore.kernel.org/r/20250520154106.2019525-1-arnd@kernel.org Signed-off-by: Lee Jones

Merge tag 'mfd-next-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

2025-06-03T18:53:55Z

Pull MFD updates from Lee Jones: "Samsung Exynos ACPM: - Populate child platform devices from device tree data - Introduce a new API, 'devm_acpm_get_by_node()', for child devices to get the ACPM handle ROHM PMICs: - Add support for the ROHM BD96802 scalable companion PMIC to the BD96801 core driver - Add support for controlling the BD96802 using the BD96801 regulator driver - Add support to the BD96805, which is almost identical to the BD96801 - Add support to the BD96806, which is similar to the BD96802 Maxim MAX77759: - Add a core driver for the MAX77759 companion PMIC - Add a GPIO driver for the expander functions on the MAX77759 - Add an NVMEM driver to expose the non-volatile memory on the MAX77759 STMicroelectronics STM32MP25: - Add support for the STM32MP25 SoC to the stm32-lptimer - Add support for the STM32MP25 to the clocksource driver, handling new register access requirements - Add support for the STM32MP25 to the PWM driver, enabling up to two PWM outputs Broadcom BCM590xx: - Add support for the BCM59054 PMU - Parse the PMU ID and revision to support behavioral differences between chip revisions - Add regulator support for the BCM59054 Samsung S2MPG10: - Add support for the S2MPG10 PMIC, which communicates via the Samsung ACPM firmware instead of I2C Exynos ACPM: - Improve timeout detection reliability by using ktime APIs instead of a loop counter assumption - Allow PMIC access during late system shutdown by switching to 'udelay()' instead of a sleeping function - Fix an issue where reading command results longer than 8 bytes would fail - Silence non-error '-EPROBE_DEFER' messages during boot to clean up logs Exynos LPASS: - Fix an error handling path by switching to 'devm_regmap_init_mmio()' to prevent resource leaks - Fix a bug where 'exynos_lpass_disable()' was called twice in the remove function - Fix another resource leak in the probe's error path by using 'devm_add_action_or_reset()' Samsung SEC: - Handle the s2dos05, which does not have IRQ support, explicitly to prevent warnings - Fix the core driver to correctly handle errors from 'sec_irq_init()' instead of ignoring them STMPE-SPI: - Correct an undeclared identifier in the 'MODULE_DEVICE_TABLE' macro MAINTAINERS: - Adjust a file path for the Siemens IPC LED drivers entry to fix a broken reference Maxim Drivers: - Correct the spelling of "Electronics" in Samsung copyright headers across multiple files General: - Fix wakeup source memory leaks on device unbind for 88pm886, as3722, max14577, max77541, max77705, max8925, rt5033, and sprd-sc27xx drivers Samsung SEC Drivers: - Split the driver into a transport-agnostic core ('sec-core') and transport-specific ('sec-i2c', 'sec-acpm') modules to support non-I2C devices - Merge the 'sec-core' and 'sec-irq' modules to reduce memory consumption - Move internal APIs to a private header to clean up the public API - Improve code style by sorting includes, cleaning up headers, sorting device tables, and using helper macros like 'dev_err_probe()', 'MFD_CELL', and 'REGMAP_IRQ_REG' - Make regmap configuration for s2dos05/s2mpu05 explicit to improve clarity - Rework platform data and regmap instantiation to use OF match data instead of a large switch statement ROHM BD96801/2: - Prepare the driver for new models by separating chip-specific data into its own structure - Drop IC name prefix from IRQ resource names in both the MFD and regulator drivers for simplification Broadcom BCM590xx: - Refactor the regulator driver to store descriptions in a table to ease support for new chips - Rename BCM59056-specific data to prepare for the addition of other regulators - Use 'dev_err_probe()' for cleaner error handling Exynos ACPM: - Correct kerneldoc warnings and use the conventional 'np' argument name General MFD: - Convert 'aat2870' and 'tps65010' to use the per-client debugfs directory provided by the I2C core - Convert 'sm501', 'tps65010' and 'ucb1x00' to use the new GPIO line value setter callbacks - Constify 'regmap_irq_chip' and other structures in '88pm886' to move data to read-only sections BCM590xx: - Drop the unused "id" member from the 'bcm590xx' struct in preparation for a replacement Samsung SEC Core: - Remove forward declarations for functions that no longer exist SM501: - Remove the unused 'sm501_find_clock()' function New Compatibles: - Google: Add a PMIC child node to the 'google,gs101-acpm-ipc' binding - ROHM: Add new bindings for 'rohm,bd96802-regulator' and 'rohm,bd96802-pmic', and add compatibles for BD96805 and BD96806 - Maxim: Add new bindings for 'maxim,max77759-gpio', 'maxim,max77759-nvmem', and the top-level 'maxim,max77759' - STM: Add 'stm32mp25' compatible to the 'stm32-lptimer' binding - Broadcom: Add 'bcm59054' compatible - Atmel/Microchip: Add 'microchip,sama7d65-gpbr' and 'microchip,sama7d65-secumod' compatibles - Samsung: Add 's2mpg10' compatible to the 'samsung,s2mps11' MFD binding - MediaTek: Add compatibles for 'mt6893' (scpsys), 'mt7988-topmisc', and 'mt8365-infracfg-nao' - Qualcomm: Add 'qcom,apq8064-mmss-sfpb' and 'qcom,apq8064-sps-sic' syscon compatibles Refactoring & Cleanup: - Convert Broadcom BCM59056 devicetree bindings to YAML and split them into MFD and regulator parts - Convert the Microchip AT91 secumod binding to YAML - Drop unrelated consumer nodes from binding examples to reduce bloat - Correct indentation and style in various DTS examples" * tag 'mfd-next-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (81 commits) mfd: maxim: Correct Samsung "Electronics" spelling in copyright headers mfd: maxim: Correct Samsung "Electronics" spelling in headers mfd: sm501: Remove unused sm501_find_clock mfd: 88pm886: Constify struct regmap_irq_chip and some other structures dt-bindings: mfd: syscon: Add mediatek,mt8365-infracfg-nao mfd: sprd-sc27xx: Fix wakeup source leaks on device unbind mfd: rt5033: Fix wakeup source leaks on device unbind mfd: max8925: Fix wakeup source leaks on device unbind mfd: max77705: Fix wakeup source leaks on device unbind mfd: max77541: Fix wakeup source leaks on device unbind mfd: max14577: Fix wakeup source leaks on device unbind mfd: as3722: Fix wakeup source leaks on device unbind mfd: 88pm886: Fix wakeup source leaks on device unbind dt-bindings: mfd: Correct indentation and style in DTS example dt-bindings: mfd: Drop unrelated nodes from DTS example dt-bindings: mfd: syscon: Add qcom,apq8064-sps-sic dt-bindings: mfd: syscon: Add qcom,apq8064-mmss-sfpb mfd: stmpe-spi: Correct the name used in MODULE_DEVICE_TABLE dt-bindings: mfd: syscon: Add mt7988-topmisc mfd: exynos-lpass: Fix another error handling path in exynos_lpass_probe() ...

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

2025-05-27T22:22:01Z

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 ...

mfd: sm501: Remove unused sm501_find_clock

2025-05-23T07:49:16Z

sm501_find_clock() was added in 2007 as part of commit b6d6454fdb66 ("[PATCH] mfd: SM501 core driver") but hasn't been used. Remove it. Signed-off-by: "Dr. David Alan Gilbert" Link: https://lore.kernel.org/r/20250509173521.49596-1-linux@treblig.org Signed-off-by: Lee Jones

mfd: 88pm886: Constify struct regmap_irq_chip and some other structures

2025-05-23T07:49:14Z

'struct regmap_irq_chip' is not modified in this driver. Constifying this structure moves some data to a read-only section, so increase overall security, especially when the structure holds some function pointers. While at it, also constify some other structures. On a x86_64, with allmodconfig, as an example: Before: ====== text data bss dec hex filename 5032 3304 64 8400 20d0 drivers/mfd/88pm886.o After: ===== text data bss dec hex filename 5800 2536 64 8400 20d0 drivers/mfd/88pm886.o Signed-off-by: Christophe JAILLET Link: https://lore.kernel.org/r/1681629840761e30494cb8920668710df60a81b8.1746996137.git.christophe.jaillet@wanadoo.fr Signed-off-by: Lee Jones

mfd: sprd-sc27xx: Fix wakeup source leaks on device unbind

2025-05-23T07:49:13Z

Device can be unbound, so driver must also release memory for the wakeup source. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Baolin Wang Link: https://lore.kernel.org/r/20250406-mfd-device-wakekup-leak-v1-8-318e14bdba0a@linaro.org Signed-off-by: Lee Jones

mfd: rt5033: Fix wakeup source leaks on device unbind

2025-05-23T07:49:12Z

Device can be unbound, so driver must also release memory for the wakeup source. Signed-off-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20250406-mfd-device-wakekup-leak-v1-7-318e14bdba0a@linaro.org Signed-off-by: Lee Jones

mfd: max8925: Fix wakeup source leaks on device unbind

2025-05-23T07:49:11Z

mfd: max77705: Fix wakeup source leaks on device unbind

2025-05-23T07:49:10Z

mfd: max77541: Fix wakeup source leaks on device unbind

2025-05-23T07:49:09Z