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https://github.com/torvalds/linux.git
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1334d2a3b3
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
...
109 lines
2.1 KiB
YAML
109 lines
2.1 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/gpio/microchip,mpfs-gpio.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Microchip MPFS GPIO Controller
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maintainers:
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- Conor Dooley <conor.dooley@microchip.com>
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properties:
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compatible:
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oneOf:
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- items:
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- const: microchip,pic64gx-gpio
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- const: microchip,mpfs-gpio
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- enum:
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- microchip,mpfs-gpio
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- microchip,coregpio-rtl-v3
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reg:
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maxItems: 1
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interrupts:
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description:
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Interrupt mapping, one per GPIO. Maximum 32 GPIOs.
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minItems: 1
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maxItems: 32
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interrupt-controller: true
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clocks:
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maxItems: 1
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resets:
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maxItems: 1
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"#gpio-cells":
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const: 2
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"#interrupt-cells":
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const: 2
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ngpios:
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description:
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The number of GPIOs available.
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minimum: 1
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maximum: 32
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default: 32
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gpio-controller: true
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gpio-line-names: true
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patternProperties:
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"^.+-hog(-[0-9]+)?$":
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type: object
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required:
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- gpio-hog
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allOf:
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- if:
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properties:
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compatible:
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contains:
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const: microchip,mpfs-gpio
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then:
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properties:
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ngpios:
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enum: [14, 24, 32]
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interrupts:
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minItems: 14
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required:
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- interrupts
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- "#interrupt-cells"
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- interrupt-controller
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required:
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- compatible
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- reg
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- "#gpio-cells"
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- gpio-controller
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- clocks
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additionalProperties: false
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examples:
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- |
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gpio@20122000 {
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compatible = "microchip,mpfs-gpio";
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reg = <0x20122000 0x1000>;
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clocks = <&clkcfg 25>;
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interrupt-parent = <&irqmux>;
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gpio-controller;
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#gpio-cells = <2>;
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ngpios = <32>;
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interrupt-controller;
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#interrupt-cells = <2>;
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interrupts = <64>, <65>, <66>, <67>,
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<68>, <69>, <70>, <71>,
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<72>, <73>, <74>, <75>,
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<76>, <77>, <78>, <79>,
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<80>, <81>, <82>, <83>,
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<84>, <85>, <86>, <87>,
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<88>, <89>, <90>, <91>,
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<92>, <93>, <94>, <95>;
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};
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...
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