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path: root/drivers/gpio/gpiolib-acpi.h
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2023-03-06gpiolib: Clean up headersAndy Shevchenko
There is a few things done: - include only the headers we are direct user of - when pointer is in use, provide a forward declaration - add missing headers - group generic headers and subsystem headers - sort each group alphabetically Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2023-02-22Merge tag 'gpio-updates-for-v6.3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux Pull gpio updates from Bartosz Golaszewski: "A rather small update, there are no new drivers, just improvements and refactoring in existing ones. Thanks to migrating of several drivers to using generalized APIs and dropping of OF interfaces in favor of using software nodes we're actually removing more code than we're adding. Core GPIOLIB: - drop several OF interfaces after moving a significant part of the code to using software nodes - remove more interfaces referring to the global GPIO numberspace that we're getting rid of - improvements in the gpio-regmap library - add helper for GPIO device reference counting - remove unused APIs - minor tweaks like sorting headers alphabetically Extended support in existing drivers: - add support for Tegra 234 PMC to gpio-tegra186 Driver improvements: - migrate the 104-dio/idi family of drivers to using the regmap-irq API - migrate gpio-i8255 and gpio-mm to the GPIO regmap API - clean-ups in gpio-pca953x - remove duplicate assignments of of_gpio_n_cells in gpio-davinci, gpio-ge, gpio-xilinx, gpio-zevio and gpio-wcd934x - improvements to gpio-pcf857x: implement get/set_multiple callbacks, use generic device properties instead of OF + minor tweaks - fix OF-related header includes and Kconfig dependencies in gpio-zevio - dynamically allocate the GPIO base in gpio-omap - use a dedicated printf specifier for printing fwnode info in gpio-sim - use dev_name() for the GPIO chip label in gpio-vf610 - other minor tweaks and fixes Documentation: - remove mentions of legacy API from comments in various places - convert the DT binding documents to YAML schema for Fujitsu MB86S7x, Unisoc GPIO and Unisoc EIC - document the Unisoc UMS512 controller in DT bindings" * tag 'gpio-updates-for-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (54 commits) gpio: sim: Use %pfwP specifier instead of calling fwnode API directly gpio: tegra186: remove unneeded loop in tegra186_gpio_init_route_mapping() gpiolib: of: Move enum of_gpio_flags to its only user gpio: mvebu: Use IS_REACHABLE instead of IS_ENABLED for CONFIG_PWM gpio: zevio: Add missing header gpio: Get rid of gpio_to_chip() gpio: pcf857x: Drop unneeded explicit casting gpio: pcf857x: Make use of device properties gpio: pcf857x: Get rid of legacy platform data gpio: rockchip: Do not mention legacy API in the code gpio: wcd934x: Remove duplicate assignment of of_gpio_n_cells gpio: zevio: Use proper headers and drop OF_GPIO dependency gpio: zevio: Remove duplicate assignment of of_gpio_n_cells gpio: xilinx: Remove duplicate assignment of of_gpio_n_cells dt-bindings: gpio: Add compatible string for Unisoc UMS512 dt-bindings: gpio: Convert Unisoc EIC controller binding to yaml dt-bindings: gpio: Convert Unisoc GPIO controller binding to yaml gpio: ge: Remove duplicate assignment of of_gpio_n_cells gpio: davinci: Remove duplicate assignment of of_gpio_n_cells gpio: omap: use dynamic allocation of base ...
2023-02-15gpiolib: acpi: remove redundant declarationRaag Jadav
Remove acpi_device declaration, as it is no longer needed. Signed-off-by: Raag Jadav <raag.jadav@intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2023-01-30gpiolib: Get rid of not used of_node memberAndy Shevchenko
All new drivers should use fwnode and / or parent to provide the necessary information to the GPIO library. Cc: Thierry Reding <treding@nvidia.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2022-12-15Merge tag 'gpio-updates-for-v6.2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux Pull gpio updates from Bartosz Golaszewski: "We have a new GPIO multiplexer driver, bunch of driver updates and refactoring in the core GPIO library. GPIO core: - teach gpiolib to work with software nodes for HW description - remove ARCH_NR_GPIOS treewide as we no longer impose any limit on the number of GPIOS since the allocation became entirely dynamic - add support for HW quirks for Cirrus CS42L56 codec, Marvell NFC controller, Freescale PCIe and Ethernet controller, Himax LCDs and Mediatek mt2701 - refactor OF quirk code - some general refactoring of the OF and ACPI code, adding new helpers, minor tweaks and fixes, making fwnode usage consistent etc. GPIO uAPI: - fix an issue where the user-space can trigger a NULL-pointer dereference in the kernel by opening a device file, forcing a driver unbind and then calling one of the syscalls on the associated file descriptor New drivers: - add gpio-latch: a new GPIO multiplexer based on latches connected to other GPIOs Driver updates: - convert i2c GPIO expanders to using .probe_new() - drop the gpio-sta2x11 driver - factor out common code for the ACCES IDIO-16 family of controllers and use this new library wherever applicable in drivers - add DT support to gpio-hisi - allow building gpio-davinci as a module and increase its maxItems property - add support for a new model to gpio-pca9570 - other minor changes to various drivers" * tag 'gpio-updates-for-v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (66 commits) gpio: sim: set a limit on the number of GPIOs gpiolib: protect the GPIO device against being dropped while in use by user-space gpiolib: cdev: fix NULL-pointer dereferences gpiolib: Provide to_gpio_device() helper gpiolib: Unify access to the device properties gpio: Do not include <linux/kernel.h> when not really needed. gpio: pcf857x: Convert to i2c's .probe_new() gpio: pca953x: Convert to i2c's .probe_new() gpio: max732x: Convert to i2c's .probe_new() dt-bindings: gpio: gpio-davinci: Increase maxItems in gpio-line-names gpiolib: ensure that fwnode is properly set gpio: sl28cpld: Replace irqchip mask_invert with unmask_base gpiolib: of: Use correct fwnode for DT-probed chips gpiolib: of: Drop redundant check in of_mm_gpiochip_remove() gpiolib: of: Prepare of_mm_gpiochip_add_data() for fwnode gpiolib: add support for software nodes gpiolib: consolidate GPIO lookups gpiolib: acpi: avoid leaking ACPI details into upper gpiolib layers gpiolib: acpi: teach acpi_find_gpio() to handle data-only nodes gpiolib: acpi: change acpi_find_gpio() to accept firmware node ...
2022-11-15gpiolib: consolidate GPIO lookupsDmitry Torokhov
Ensure that all paths to obtain/look up GPIOD from generic consumer-visible APIs go through the new gpiod_find_and_request() helper, so that we can easily extend it with support for new firmware mechanisms. The only exception is OF-specific [devm_]gpiod_get_from_of_node() API that is still being used by a couple of drivers and will be removed as soon as patches converting them to use generic fwnode/device APIs are accepted. Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2022-11-15gpiolib: acpi: avoid leaking ACPI details into upper gpiolib layersDmitry Torokhov
There is no need for the generic parts of GPIOLIB to be aware of implementation details of ACPI-bases lookups. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2022-11-15gpiolib: acpi: change acpi_find_gpio() to accept firmware nodeDmitry Torokhov
In preparation of switching all ACPI-based GPIO lookups to go through acpi_find_gpio() let's change it to accept device node as its argument as we do not always have access to device structure. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2022-10-24gpiolib: Clean up headersAndy Shevchenko
There is a few things done: - include only the headers we are direct user of - when pointer is in use, provide a forward declaration - add missing headers - group generic headers and subsystem headers - sort each group alphabetically While at it, fix some awkward indentations. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2022-10-04gpiolib: acpi: Add wake_capable variants of acpi_dev_gpio_irq_getRaul E Rangel
The ACPI spec defines the SharedAndWake and ExclusiveAndWake share type keywords. This is an indication that the GPIO IRQ can also be used as a wake source. This change exposes the wake_capable bit so drivers can correctly enable wake functionality instead of making an assumption. Signed-off-by: Raul E Rangel <rrangel@chromium.org> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2021-03-26gpiolib: Introduce acpi_gpio_dev_init() and call it from coreAndy Shevchenko
In the ACPI case we may use the firmware node in the similar way as it's done for OF case. We may use that fwnode for other purposes in the future. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2020-11-16gpiolib: acpi: Take into account debounce settingsAndy Shevchenko
We didn't take into account the debounce settings supplied by ACPI. This change is targeting the mentioned gap. Reported-by: Coiby Xu <coiby.xu@gmail.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2019-09-10gpiolib: acpi: make acpi_can_fallback_to_crs() staticDmitry Torokhov
It is not used outside gpiolib-acpi.c module, so there is no need to export it. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Link: https://lore.kernel.org/r/20190904172624.GA76617@dtor-ws Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2019-07-31gpiolib: acpi: Split ACPI stuff to gpiolib-acpi.hAndy Shevchenko
This is a follow up to the commit f626d6dfb709 ("gpio: of: Break out OF-only code") which broke down OF parts of GPIO library. Here we do the similar to ACPI. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20190730104337.21235-2-andriy.shevchenko@linux.intel.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>