This driver provides a gpio chip, which is only possible when GPIOLIB
is enabled, which was previously guaranteed by the CONFIG_OF_GPIO
dependency that is now gone:
ERROR: modpost: "gpiochip_get_data" [drivers/regulator/rpi-panel-attiny-regulator.ko] undefined!
ERROR: modpost: "devm_gpiochip_add_data_with_key" [drivers/regulator/rpi-panel-attiny-regulator.ko] undefined!
Add an explicit GPIOLIB dependency instead.
Fixes: bf017304fc ("regulator: drop unneeded dependencies on OF_GPIO")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20260429135812.112514-1-arnd@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Pull regulator fix from Mark Brown:
"Just one trivial cleanup of the user visible prompts in Kconfig here,
standardising how we describe Qualcomm"
* tag 'regulator-fix-v7.1-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: qcom: Unify user-visible "Qualcomm" name
Pull gpio updates from Bartosz Golaszewski:
"For this merge window we have two new drivers: support for
GPIO-signalled ACPI events on Intel platforms and a generic
GPIO-over-pinctrl driver using the ARM SCMI protocol for
controlling pins.
Several things have been reworked in GPIO core: we unduplicated GPIO
hog handling, reduced the number of SRCU locks and dereferences,
improved support for software-node-based lookup and removed more
legacy code after converting remaining users to modern alternatives.
There's also a number of driver reworks and refactoring, documentation
updates, some bug-fixes and new tests.
GPIO core:
- defer probe on software node lookups when the remote software node
exists but has not been registered as a firmware node yet
- unify GPIO hog handling by moving code duplicated in OF and ACPI
modules into GPIO core and allow setting up hogs with software
nodes
- allow matching GPIO controllers by secondary firmware node if
matching by primary does not succeed
- demote deferral warnings to debug level as they are quite normal
when using software nodes which don't support fw_devlink yet
- disable the legacy GPIO character device uAPI v1 supprt in Kconfig
by default
- rework several core functions in preparation for the upcoming
Revocable helper library for protecting resources against sudden
removal, this reduces the number of SRCU dereferences in GPIO core
- simplify file descriptor logic in GPIO character device code by
using FD_PREPARE()
- introduce a header defining symbols used by both GPIO consumers and
providers to avoid having to include provider-specific headers from
drivers which only consume GPIOs
- replace snprintf() with strscpy() where formatting is not required
New drivers:
- add the gpio-by-pinctrl generic driver using the ARM SCMI protocol
to control GPIOs (along with SCMI changes pulled from the pinctrl
tree)
- add a driver providing support for handling of platform events via
GPIO-signalled ACPI events (used on Intel Nova Lake and later
platforms)
Driver changes:
- extend the gpio-kempld driver with support for more recent models,
interrupts and setting/getting multiple values at once
- improve interrupt handling in gpio-brcmstb
- add support for multi-SoC systems in gpio-tegra186
- make sure we return correct values from the .get() callbacks in
several GPIO drivers by normalizing any values other than 0, 1 or
negative error numbers
- use flexible arrays in several drivers to reduce the number of
required memory allocations
- simplify synchronous waiting for virtual drivers to probe and
remove the dedicated, a bit overengineered helper library
dev-sync-probe
- remove unneeded Kconfig dependencies on OF_GPIO in several drivers
and subsystems
- convert the two remaining users of of_get_named_gpio() to using
GPIO descriptors and remove the (no longer used) function along
with the header that declares it
- add missing includes in gpio-mmio
- shrink and simplify code in gpio-max732x by using guard(mutex)
- remove duplicated code handling the 'ngpios' property from
gpio-ts4800, it's already handled in GPIO core
- use correct variable type in gpio-aspeed
- add support for a new model in gpio-realtek-otto
- allow to specify the active-low setting of simulated hogs over the
configfs interface (in addition to existing devicetree support) in
gpio-sim
Bug fixes:
- clear the OF_POPULATED flag on hog nodes in GPIO chip remove path
on OF systems
- fix resource leaks in error path in gpiochip_add_data_with_key()
- drop redundant device reference in gpio-mpsse
Tests:
- add selftests for use-after-free cases in GPIO character device
code
DT bindings:
- add a DT binding document for SCMI based, gpio-over-pinctrl devices
- fix interrupt description in microchip,mpfs-gpio
- add new compatible for gpio-realtek-otto
- describe the resets of the mpfs-gpio controller
- fix maintainer's email in gpio-delay bindings
- remove the binding document for cavium,thunder-8890 as the
corresponding device is bound over PCI and not firmware nodes
Documentation:
- update the recommended way of converting legacy boards to using
software nodes for GPIO description
- describe GPIO line value semantics
- misc updates to kerneldocs
Misc:
- convert OMAP1 ams-delta board to using GPIO hogs described with
software nodes"
* tag 'gpio-updates-for-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (79 commits)
gpio: swnode: defer probe on references to unregistered software nodes
dt-bindings: gpio: cavium,thunder-8890: Remove DT binding
Documentation: gpio: update the preferred method for using software node lookup
gpio: gpio-by-pinctrl: s/used to do/is used to do/
gpio: aspeed: fix unsigned long int declaration
gpio: rockchip: convert to dynamic GPIO base allocation
gpio: remove dev-sync-probe
gpio: virtuser: stop using dev-sync-probe
gpio: aggregator: stop using dev-sync-probe
gpio: sim: stop using dev-sync-probe
gpio: Add Intel Nova Lake ACPI GPIO events driver
gpiolib: Make deferral warnings debug messages
gpiolib: fix hogs with multiple lines
gpio: fix up CONFIG_OF dependencies
gpio: gpio-by-pinctrl: add pinctrl based generic GPIO driver
gpio: dt-bindings: Add GPIO on top of generic pin control
firmware: arm_scmi: Allow PINCTRL_REQUEST to return EOPNOTSUPP
pinctrl: scmi: ignore PIN_CONFIG_PERSIST_STATE
pinctrl: scmi: Delete PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS support
pinctrl: scmi: Add SCMI_PIN_INPUT_VALUE
...
Pull gpio updates from Bartosz Golaszewski:
"There are two new drivers and some changes to GPIO core but mostly
just GPIO driver updates across a wide array of files, adding support
for new models as well as various refactoring changes. Nothing
controversial and everything has spent a good measure of time in
linux-next.
GPIOLIB core:
- shrink the GPIO bus driver stub code
- rework software node support for "undefined" software nodes
- provide and use devm_fwnode_gpiod_get_optional()
- only compile the OF quirk for MT2701 when needed
New drivers:
- add the GPIO driver for ROHM bd72720
- add the gpio-line-mux driver providing 1-to-many mapping for a
single real GPIO
Driver changes:
- refactor gpio-pca9570: use lock guard, add missing headers, use
devres consistently
- add support for a new model (G7 Aspeed sgpiom) to the aspeed-sgpio
driver along with some prerequisite refactoring
- use device_get_match_data() where applicable and save some lines
- add support for more models to gpio-cadence
- add the compatible property to reset-gpio and use it in shared GPIO
management
- drop unnecessary use of irqd_get_trigger_type() in gpio-max77759
- add support for a new variant to gpio-pca953x
- extend build coverage with COMPILE_TEST for more drivers
- constify configfs structures in gpio-sim and gpio-virtuser
- add support for the K3 SoC to gpio-spacemit
- implement the missing .get_direction() callback in gpio-max77620
- add support for Tegra264 to gpio-tegra186
- drop unneeded MODULE_ALIAS() from gpio-menz127
DT bindings:
- document support for the opencores GPIO controller in gpio-mmio
- document new variants for gpio-pca953x
Documentation:
- extensively describe interrupt source detection for gpio-pca953x
and add more models to the list of supported variants"
* tag 'gpio-updates-for-v7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (59 commits)
gpio: tegra186: Add support for Tegra264
dt-bindings: gpio: Add Tegra264 support
gpio: spacemit-k1: Use PDR for pin direction, not SDR/CDR
gpio: max77620: Implement .get_direction() callback
gpio: aspeed-sgpio: Support G7 Aspeed sgpiom controller
dt-bindings: gpio: aspeed,sgpio: Support ast2700
gpio: aspeed-sgpio: Convert IRQ functions to use llops callbacks
gpio: aspeed-sgpio: Create llops to handle hardware access
gpio: aspeed-sgpio: Remove unused bank name field
gpio: aspeed-sgpio: Change the macro to support deferred probe
regulator: bd71815: switch to devm_fwnode_gpiod_get_optional
gpiolib: introduce devm_fwnode_gpiod_get_optional() wrapper
gpio: mmio: Add compatible for opencores GPIO
dt-bindings: gpio-mmio: Correct opencores GPIO
gpio: pca9570: use lock guards
gpio: pca9570: Don't use "proxy" headers
gpio: pca9570: Use devm_mutex_init() for mutex initialization
MAINTAINERS: Add ROHM BD72720 PMIC
power: supply: bd71828-power: Support ROHM BD72720
power: supply: bd71828: Support wider register addresses
...
ROHM BD72720 is a power management IC which integrates 10 buck and 11 LDO
regulators. This PMIC has plenty of commonalities with the BD71828 and
BD71879.
The BD72720 does also have similar 'run-level'-concept as the BD71828 had.
It allows controlling the regulator's 'en masse', although only BUCK1
and LDO1 can utilize this in BD72720. Similar to BD71828, this 'en
masse' -control is not supported by this driver.
Support the voltage and enable/disable state control for the BD72720.
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://patch.msgid.link/88b82128648516d9dbb173044042f2a7a5dfdf1c.1765804226.git.mazziesaccount@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>
Merge series from Andreas Kemnade <andreas@kemnade.info>:
Add a driver for the TPS65185 regulator which provides the
comparatively high voltages needed for electronic paper displays.
Datasheet for the TPS65185 is at https://www.ti.com/lit/gpn/tps65185
To simplify things, include the hwmon part directly which is only
one temperature sensor and there are no other functions besides regulators
in this chip.
Add a driver for the TPS65185 regulator. Implement handling of the various
gpio pins. Because the PWRUP (=enable) pin functionality can be achieved
by just using two bits instead, just ensure that it is set to a stable
value.
Implement the pair of symmetric LDOs as a single regulator because they
share a single voltage set register. As the VCOM regulator sits behind that
machinery, just define that one as a supply.
For simplicity, just add the temperature sensor (depending on external NTC)
directly.
There is a mechanism to measure some kick-back voltage during a defined EPD
operation, to calibrate the VCOM voltage setting and store that
non-volatile in the chip to be the power up default setup. That is not
implemented yet in the driver, but that also means that there is a
non-factory default value in these registers after power-up.
Tested-by: Josua Mayer <josua.mayer@jm0.eu>
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Link: https://patch.msgid.link/20260102-tps65185-submit-v3-2-23bda35772f2@kemnade.info
Signed-off-by: Mark Brown <broonie@kernel.org>
Add support for the Maxim Integrated MAX77675 PMIC regulator.
The MAX77675 is a compact, highly efficient SIMO (Single Inductor Multiple Output)
power management IC that provides four programmable buck-boost switching regulators
with only one inductor. It supports up to 700mA total output current and operates
from a single-cell Li-ion battery.
An integrated power-up sequencer and I2C interface allow flexible startup
configuration and runtime control.
Signed-off-by: Joan Na <joan.na@analog.com>
Link: https://patch.msgid.link/20251207032907.4850-3-joan.na@analog.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Merge series from Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>:
Use container_of_const(), which is preferred over container_of(), when
the argument 'ptr' and returned pointer are already const, for better
code safety and readability.
Some drivers already have const everywhere, so container_of_const can be
directly used. In few other drivers, the final pointer can be constified
that way.
Add a driver for the FP9931/JD9930 regulator. Implement handling of the PG
(power good), TS_EN (temperature sensor enable), and EN (enable regulators)
pins. Implement the pair of symmetric LDOs as a single regulator because
they share a single voltage set register. For simplicity, just add the
temperature sensor (depending on external NTC) directly.
Limitations:
- As these regulators are controlled together with the VCOM regulator via
the EN pin, some kind of management must be in place. As the enable op
is not called when the regulator is already enabled, simple refcounting
seems not to work to avoid clearing EN when one regulator is still
enabled. As these regulators are typically used together, this
limitation should not hurt hard, just provide the is_enabled op.
- As the VCOM step is quite odd (5V/255 steps), rounding is needed.
Due to some limitations in the regulator core, the max/min voltages in
the devicetree must match the idea of the driver how to round things
exactly.
- Night mode is not implemented, so only the FP9931 compatible is needed in
the driver, there is no REGULATOR_MODE_NIGHT and no clear definition in
the datasheet what it does, also the XON pin which seems to be an input
related to that night mode is not used.
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Link: https://patch.msgid.link/20251115-fp9931-submit-v3-3-92f5d0772b68@kemnade.info
Signed-off-by: Mark Brown <broonie@kernel.org>
Merge series from AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>:
This series adds support for three new MediaTek PMICs: MT6316, MT6363
and MT6373 and their variants - used in board designs featuring the
MediaTek MT8196 Chromebook SoC, or the MT6991 Dimensity 9400 Smartphone
SoC.
In particular, MT6316 is a regulator, but the MT6363 and MT6373 PMICs
are multi-function devices, as they have and expose multiple sub-devices;
moreover, some of those also contain an interrupt controller, managing
internal IPs interrupts: for those, a chained interrupt handler is
registered, which parent is the SPMI controller itself.
This series adds support for all of the MT6316 regulator variants and
for MT6363, MT6373 SPMI PMICs and their interrupt controller.
Add a driver for the regulators found on all types of the MediaTek
MT6316 SPMI PMIC, fully controlled by SPMI interface and featuring
four step down DCDC (buck) converters.
In particular, this includes support for:
- MT6316(BP/VP): 2+2 Phase (Phase 1: buck1+2, Phase 2: buck3+4)
- MT6316(CP/HP/KP): 3+1 Phase (Phase 1: buck1+2+4, Phase 2: buck3)
- MT6316(DP/TP): 4+0 Phase (Single phase, buck1+2+3+4)
Please note that the set/clear registers for the enable bits are
not documented in the datasheet version that I used as reference,
but those are used in the downstream driver and I verified that
are actually working as expected.
Besides, it's also worth clearly mentioning that the MT6316 PMICs
voltage selector register uses a weird 9-bits Big Endian format,
for which a driver-private helper is provided.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://patch.msgid.link/20251027110527.21002-3-angelogioacchino.delregno@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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
...
Add support for the regulators found in the SpacemiT P1 PMIC. This
PMIC provides 6 buck converters and 12 LDO regulators.
The PMIC is implemented as a multi-function device. These regulators
are probed based on this driver being named in a MFD cell in the simple
MFD I2C driver.
Signed-off-by: Alex Elder <elder@riscstar.com>
Link: https://patch.msgid.link/20250825172057.163883-4-elder@riscstar.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Ihor MatushchakandMark Brown
Arnd BergmannandMark Brown
Linus Torvalds
Krzysztof KozlowskiandMark Brown
Bartosz Golaszewski
Felix GuandMark Brown
Matti VaittinenandLee Jones
Andreas KemnadeandMark Brown
ChiYuan HuangandMark Brown
Joan NaandMark Brown
AngeloGioacchino Del RegnoandMark Brown
Jean DelvareandMark Brown
Samuel KayodeandLee Jones
Igor BelwonandMark Brown
Alex ElderandMark Brown