kernel/linux.git/drivers/mfd/stmpe.c, branch v7.0.10

Merge tag 'mfd-next-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

2025-10-01T19:04:12+00:00

Pull MFD updates from Lee Jones: "This round of updates contains a fair amount of new device support, a couple of fixes and some refactoring. The most notable additions include new drivers for Loongson's Security Engine, RNG and TPM, new drivers for TI's TPS6594 Power Button and BQ257xx Charger ICs. The rest of the set provides a return value check fix and a refactoring to use a more modern GPIO API for the VEXPRESS sysreg driver, the removal of a deprecated IRQ ACK function from the MC13xxx RTC driver and a new DT binding for the aforementioned TI BQ257xx charger. New Support & Features: - Add a suite of drivers for the Loongson Security Engine, including the core controller, a Random Number Generator (RNG) and Trusted Platform Module (TPM) support. - Introduce support for the TI TPS6594 PMIC's power button, including the input driver, MFD cell registration, and a system power-off handler. - Add comprehensive support for the TI BQ257xx series of charger ICs, including the core MFD driver and a power supply driver for the charger functionality. Improvements & Fixes: - Check the return value of devm_gpiochip_add_data() in the VEXPRESS sysreg driver to prevent potential silent failures. Cleanups & Refactoring: - Add a MAINTAINERS entry for the new Loongson Security Engine drivers. - Convert the VEXPRESS sysreg driver to use the modern generic GPIO chip API. Removals: - Remove the deprecated and unused mc13xxx_irq_ack() function from the MC13xxx RTC, input and touchscreen drivers. Device Tree Bindings Updates: - Add device tree bindings for the TI BQ25703A charger" * tag 'mfd-next-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (69 commits) mfd: simple-mfd-i2c: Add compatible string for LX2160ARDB mfd: simple-mfd-i2c: Keep compatible strings in alphabetical order dt-bindings: mfd: twl: Add missing sub-nodes for TWL4030 & TWL603x dt-bindings: watchdog: Add SMARC-sAM67 support dt-bindings: mfd: tps6594: Allow gpio-line-names mfd: intel-lpss: Add Intel Wildcat Lake LPSS PCI IDs mfd: 88pm886: Add GPADC cell mfd: vexpress-sysreg: Use more common syntax for compound literals mfd: rz-mtu3: Fix MTU5 NFCR register offset mfd: max77705: Setup the core driver as an interrupt controller mfd: cs42l43: Remove IRQ masking in suspend mfd: cs42l43: Move IRQ enable/disable to encompass force suspend mfd: ls2kbmc: Add Loongson-2K BMC reset function support mfd: ls2kbmc: Introduce Loongson-2K BMC core driver mfd: bd71828, bd71815: Prepare for power-supply support dt-bindings: mfd: aspeed: Add AST2700 SCU compatibles dt-bindings: mfd: Convert aspeed,ast2400-p2a-ctrl to DT schema dt-bindings: mfd: fsl,mc13xxx: Add buttons node dt-bindings: mfd: fsl,mc13xxx: Convert txt to DT schema mfd: macsmc: Add "apple,t8103-smc" compatible ...

mfd: stmpe: Remove IRQ domain upon removal

2025-10-01T09:28:05+00:00

The IRQ domain is (optionally) added during stmpe_probe, but never removed. Add the call to stmpe_remove. Signed-off-by: Alexander Stein Link: https://lore.kernel.org/r/20250725070752.338376-1-alexander.stein@ew.tq-group.com Signed-off-by: Lee Jones

mfd: stmpe: Allow building as module

2025-09-04T13:00:53+00:00

Export the core probe and remove function to be used by i2c and spi drivers. Also add necessary module information so the drivers can be built as modules. This reduces footprint of the driver is enabled but unused. Signed-off-by: Alexander Stein Link: https://lore.kernel.org/r/20250819070458.1027883-1-alexander.stein@ew.tq-group.com Signed-off-by: Bartosz Golaszewski

mfd: Switch to irq_domain_create_*()

2025-05-16T19:06:10+00:00

irq_domain_add_*() interfaces are going away as being obsolete now. Switch to the preferred irq_domain_create_*() ones. Those differ in the node parameter: They take more generic struct fwnode_handle instead of struct device_node. Therefore, of_fwnode_handle() is added around the original parameter. Note some of the users can likely use dev->fwnode directly instead of indirect of_fwnode_handle(dev->of_node). But dev->fwnode is not guaranteed to be set for all, so this has to be investigated on case to case basis (by people who can actually test with the HW). [ tglx: Fix up subject prefix ] Signed-off-by: Jiri Slaby (SUSE) Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/all/20250319092951.37667-25-jirislaby@kernel.org

mfd: stmpe: Only disable the regulators if they are enabled

2023-06-21T17:45:37+00:00

In stmpe_probe(), if some regulator_enable() calls fail, probing continues and there is only a dev_warn(). So, if stmpe_probe() is called the regulator may not be enabled. It is cleaner to test it before calling regulator_disable() in the remove function. Fixes: 9c9e321455fb ("mfd: stmpe: add optional regulators") Signed-off-by: Christophe JAILLET Reviewed-by: Linus Walleij Link: https://lore.kernel.org/r/8de3aaf297931d655b9ad6aed548f4de8b85425a.1686998575.git.christophe.jaillet@wanadoo.fr Signed-off-by: Lee Jones

mfd: various: Use of_property_present() for testing DT property presence

2023-04-26T10:40:32+00:00

It is preferred to use typed property access functions (i.e. of_property_read_ functions) rather than low-level of_get_property/of_find_property functions for reading properties. As part of this, convert of_get_property/of_find_property calls to the recently added of_property_present() helper when we just want to test for presence of a property and nothing more. Signed-off-by: Rob Herring Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20230310144712.1543379-1-robh@kernel.org

mfd: stmpe: Remove #ifdef guards for PM related functions

2022-12-07T13:28:13+00:00

Use the new EXPORT_GPL_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() macros to handle the .suspend/.resume callbacks. These macros allow the suspend and resume functions to be automatically dropped by the compiler when CONFIG_SUSPEND is disabled, without having to use #ifdef guards. This has the advantage of always compiling these functions in, independently of any Kconfig option. Thanks to that, bugs and other regressions are subsequently easier to catch. Signed-off-by: Paul Cercueil Signed-off-by: Lee Jones

mfd: stmpe: Switch to using gpiod API

2022-09-28T15:17:40+00:00

This patch switches the driver away from legacy gpio/of_gpio API to gpiod API, and removes use of of_get_named_gpio_flags() which I want to make private to gpiolib. We also need to patch relevant DTS files, as the original code relied on the fact that of_get_named_gpio_flags() would fetch any data encoded in GPIO flags, even if it does not reflect valid flags for a GPIO. Signed-off-by: Dmitry Torokhov Reviewed-by: Linus Walleij Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/YxeS1BK2OBH1P/kO@google.com

mfd: stmpe: Probe sub-function by compatible

2022-09-28T15:09:48+00:00

Use sub-function of_compatible during probe, instead of using the node name. The code should not rely on the node names during probe, in addition to that the previously hard-coded node names are not compliant to the latest naming convention (they are not generic and they use underscores), and it was broken by mistake already once [1]. [1] commit 56086b5e804f ("ARM: dts: imx6qdl-apalis: Avoid underscore in node name") Suggested-by: Ahmad Fatoum Signed-off-by: Francesco Dolcini Reviewed-by: Linus Walleij Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20220712163345.445811-3-francesco.dolcini@toradex.com

mfd: stmpe: Remove rotator block from probe

2022-09-28T15:09:48+00:00

Remove rotator block from probe, it is not used in any device tree file, there is no related cell defined, it's just dead non-working code with no of_compatible for it. This is a preliminary change to allow probing by of_compatible and not by a fixed name. Signed-off-by: Francesco Dolcini Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20220712163345.445811-2-francesco.dolcini@toradex.com