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2025-04-17gpiolib: Call validate_desc() when VALIDATE_DESC() can't be usedAndy Shevchenko
Call validate_desc() directly when VALIDATE_DESC() can't be used. It will print additional information useful for debugging. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20250416095645.2027695-7-andriy.shevchenko@linux.intel.com Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-17gpiolib: Move validate_desc() and Co upper in the codeAndy Shevchenko
Move validate_desc() and Co upper in the code to be able to use in the further changes. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20250416095645.2027695-6-andriy.shevchenko@linux.intel.com Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-17gpiolib: Revert "Don't WARN on gpiod_put() for optional GPIO"Andy Shevchenko
No need to double check the pointer for NULL since gpiod_free() is using VALIDATE_DESC_VOID() which simply returns in that case. This reverts commit 1d7765ba15aca68f3bc52f59434c1c34855bbb54. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20250416095645.2027695-5-andriy.shevchenko@linux.intel.com Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-17gpiolib: Print actual error when descriptor contains an error pointerAndy Shevchenko
Print the actual error when descriptor contains an error pointer. This might help debugging those rare cases. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20250416095645.2027695-4-andriy.shevchenko@linux.intel.com Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-17gpiolib: Convert to use guard()() for gpio_machine_hogs_mutexAndy Shevchenko
The driver uses guard()()/scoped_guard() for the rest of the synchronisation calls. Convert to use the same for gpio_machine_hogs_mutex. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20250416095645.2027695-3-andriy.shevchenko@linux.intel.com Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-17gpiolib: Make taking gpio_lookup_lock consistentAndy Shevchenko
There are two ways to take a lock: plain call to the mutex_lock() or using guard()() / scoped_guard(). The driver inconsistently uses both. Make taking gpio_lookup_lock consistent. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20250416095645.2027695-2-andriy.shevchenko@linux.intel.com Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-17gpio: spacemit: add support for K1 SoCYixun Lan
Implement GPIO functionality which capable of setting pin as input, output. Also, each pin can be used as interrupt which support rising, falling, or both edge type trigger. Reviewed-by: Alex Elder <elder@riscstar.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Yixun Lan <dlan@gentoo.org> Link: https://lore.kernel.org/r/20250412-03-k1-gpio-v8-2-1c6862d272ec@gentoo.org Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-17gpio: tn48m: enable building the module with COMPILE_TEST=yBartosz Golaszewski
Extend the build coverage by allowing to build the module with COMPILE_TEST enabled. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20250408-gpio-compile-test-v1-6-140e108e9392@linaro.org Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-17gpio: rtd: enable building the module with COMPILE_TEST=yBartosz Golaszewski
Extend the build coverage by allowing to build the module with COMPILE_TEST enabled. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20250408-gpio-compile-test-v1-4-140e108e9392@linaro.org Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-17gpio: pl061: enable building the module with COMPILE_TEST=yBartosz Golaszewski
Extend the build coverage by allowing to build the module with COMPILE_TEST enabled. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20250408-gpio-compile-test-v1-3-140e108e9392@linaro.org Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-17gpio: msc313: enable building the module with COMPILE_TEST=yBartosz Golaszewski
Extend the build coverage by allowing to build the module with COMPILE_TEST enabled. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20250408-gpio-compile-test-v1-2-140e108e9392@linaro.org Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-17gpio: zynq: enable building the modules with COMPILE_TEST=yBartosz Golaszewski
Extend the build coverage by allowing to build the modules with COMPILE_TEST enabled. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20250408-gpio-compile-test-v1-1-140e108e9392@linaro.org Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-17gpio: blzp1600: drop dependency on OF headersBartosz Golaszewski
Use the generic boolean device property getter instead of the OF-specific variant. This allows us to stop pulling in linux/of.h. While at it: drop the of_irq.h inclusion as none of its symbols are used in this driver. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Reviewed-by: Nikolaos Pasaloukos <nikolaos.pasaloukos@blaize.com> Link: https://lore.kernel.org/r/20250408143629.125576-1-brgl@bgdev.pl Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-17gpio: ds4520: don't check the 'ngpios' property in the driverBartosz Golaszewski
This is already done by the gpio-regmap abstraction by calling gpiochip_get_ngpios(). We don't need to do this at the driver level. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Link: https://lore.kernel.org/r/20250408-gpio-regmap-ngpios-v2-1-26f254014f57@linaro.org Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-17gpio: ich: use new line value setter callbacksBartosz Golaszewski
struct gpio_chip now has callbacks for setting line values that return an integer, allowing to indicate failures. Convert the driver to using them. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Link: https://lore.kernel.org/r/20250407-gpiochip-set-rv-gpio-part1-v1-12-78399683ca38@linaro.org Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-17gpio: ich: enable building with COMPILE_TEST=yBartosz Golaszewski
Extend the build coverage by allowing to build the module with COMPILE_TEST enabled. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20250407-gpiochip-set-rv-gpio-part1-v1-11-78399683ca38@linaro.org Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-17gpio: htc-egpio: use new line value setter callbacksBartosz Golaszewski
struct gpio_chip now has callbacks for setting line values that return an integer, allowing to indicate failures. Convert the driver to using them. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Link: https://lore.kernel.org/r/20250407-gpiochip-set-rv-gpio-part1-v1-10-78399683ca38@linaro.org Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-17gpio: htc-egpio: enable building with COMPILE_TEST=yBartosz Golaszewski
Extend the build coverage by allowing to build the module with COMPILE_TEST enabled. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20250407-gpiochip-set-rv-gpio-part1-v1-9-78399683ca38@linaro.org Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-17gpio: gw-pld: use new line value setter callbacksBartosz Golaszewski
struct gpio_chip now has callbacks for setting line values that return an integer, allowing to indicate failures. Convert the driver to using them. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Link: https://lore.kernel.org/r/20250407-gpiochip-set-rv-gpio-part1-v1-8-78399683ca38@linaro.org Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-17gpio: graniterapids: use new line value setter callbacksBartosz Golaszewski
struct gpio_chip now has callbacks for setting line values that return an integer, allowing to indicate failures. Convert the driver to using them. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Link: https://lore.kernel.org/r/20250407-gpiochip-set-rv-gpio-part1-v1-7-78399683ca38@linaro.org Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-17gpio: f7188: use new line value setter callbacksBartosz Golaszewski
struct gpio_chip now has callbacks for setting line values that return an integer, allowing to indicate failures. Convert the driver to using them. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Link: https://lore.kernel.org/r/20250407-gpiochip-set-rv-gpio-part1-v1-6-78399683ca38@linaro.org Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-16gpio: exar: use new line value setter callbacksBartosz Golaszewski
struct gpio_chip now has callbacks for setting line values that return an integer, allowing to indicate failures. Convert the driver to using them. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Link: https://lore.kernel.org/r/20250407-gpiochip-set-rv-gpio-part1-v1-4-78399683ca38@linaro.org Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-16gpio: em: use new line value setter callbacksBartosz Golaszewski
struct gpio_chip now has callbacks for setting line values that return an integer, allowing to indicate failures. Convert the driver to using them. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Link: https://lore.kernel.org/r/20250407-gpiochip-set-rv-gpio-part1-v1-3-78399683ca38@linaro.org Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-16gpio: eic-sprd: use new line value setter callbacksBartosz Golaszewski
struct gpio_chip now has callbacks for setting line values that return an integer, allowing to indicate failures. Convert the driver to using them. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Link: https://lore.kernel.org/r/20250407-gpiochip-set-rv-gpio-part1-v1-2-78399683ca38@linaro.org Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-16gpio: dln2: use new line value setter callbacksBartosz Golaszewski
struct gpio_chip now has callbacks for setting line values that return an integer, allowing to indicate failures. Convert the driver to using them. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Link: https://lore.kernel.org/r/20250407-gpiochip-set-rv-gpio-part1-v1-1-78399683ca38@linaro.org Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-14gpio: GPIO_BLZP1600 should depend on ARCH_BLAIZEGeert Uytterhoeven
The Blaize BLZP1600 GPIO controller is only present on BLaize BLZP1600 SoCs. Hence add a dependency on ARCH_BLAIZE, to prevent asking the user about this driver when configuring a kernel without Blaize platform support. Fixes: 602ae04f56542d8e ("gpio: Enable Blaize BLZP1600 GPIO support") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Nikolaos Pasaloukos <nikolaos.pasaloukos@blaize.com> Link: https://lore.kernel.org/r/a75af4b623579a193b4a59350c063969aabb5b71.1744190524.git.geert+renesas@glider.be Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-14gpio: aggregator: Fix leak in gpio_aggregator_parse()Dan Carpenter
Call gpio_aggregator_free_lines() before returning on this error path. Fixes: 83c8e3df642f ("gpio: aggregator: expose aggregator created via legacy sysfs to configfs") Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Acked-by: Koichiro Den <koichiro.den@canonical.com> Link: https://lore.kernel.org/r/e023bfe52509ce1bef6209ec7c47e99279c551dd.1744452787.git.dan.carpenter@linaro.org Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-14gpio: aggregator: Fix error code in gpio_aggregator_activate()Dan Carpenter
Propagate the error code if gpio_aggregator_make_device_sw_node() fails. Don't return success. Fixes: 86f162e73d2d ("gpio: aggregator: introduce basic configfs interface") Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Acked-by: Koichiro Den <koichiro.den@canonical.com> Link: https://lore.kernel.org/r/79b804a0769a434698616bebedacc0e5d5605fdc.1744452787.git.dan.carpenter@linaro.org Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-14gpio: aggregator: Return an error if there are no GPIOs in ↵Dan Carpenter
gpio_aggregator_parse() The error handling in gpio_aggregator_parse() was re-written. It now returns success if there are no GPIOs. Restore the previous behavior and return -EINVAL instead. Fixes: 83c8e3df642f ("gpio: aggregator: expose aggregator created via legacy sysfs to configfs") Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Acked-by: Koichiro Den <koichiro.den@canonical.com> Link: https://lore.kernel.org/r/9dcd5fda7a3819e896d9eee4156e7c46c9a64595.1744452787.git.dan.carpenter@linaro.org Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-14gpio: aggregator: Fix gpio_aggregator_line_alloc() checkingDan Carpenter
The gpio_aggregator_line_alloc() function returns error pointers, but the callers check for NULL. Update the error checking in the callers. Fixes: 83c8e3df642f ("gpio: aggregator: expose aggregator created via legacy sysfs to configfs") Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Acked-by: Koichiro Den <koichiro.den@canonical.com> Link: https://lore.kernel.org/r/cc71d8cf6e9bb4bb8cd9ae5050100081891d9345.1744452787.git.dan.carpenter@linaro.org Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-14gpio: aggregator: fix "_sysfs" prefix check in gpio_aggregator_make_group()Dan Carpenter
This code is intended to reject strings that start with "_sysfs" but the strcmp() limit is wrong so checks the whole string instead of the prefix. Fixes: 83c8e3df642f ("gpio: aggregator: expose aggregator created via legacy sysfs to configfs") Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Koichiro Den <koichiro.den@canonical.com> Link: https://lore.kernel.org/r/30210ed77b40b4b6629de659cb56b9ec7832c447.1744452787.git.dan.carpenter@linaro.org Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2025-04-09gpio: aggregator: cancel deferred probe for devices created via configfsKoichiro Den
For aggregators initialized via configfs, write 1 to 'live' waits for probe completion and returns an error if the probe fails, unlike the legacy sysfs interface, which is asynchronous. Since users control the liveness of the aggregator device and might be editing configurations while 'live' is 0, deferred probing is both unnatural and unsafe. Cancel deferred probe for purely configfs-based aggregators when probe fails. Signed-off-by: Koichiro Den <koichiro.den@canonical.com> Link: https://lore.kernel.org/r/20250407043019.4105613-8-koichiro.den@canonical.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-04-09gpio: aggregator: expose aggregator created via legacy sysfs to configfsKoichiro Den
Expose settings for aggregators created using the sysfs 'new_device' interface to configfs. Once written to 'new_device', an "_sysfs.<N>" path appears in the configfs regardless of whether the probe succeeds. Consequently, users can no longer use that prefix for custom GPIO aggregator names. The 'live' attribute changes to 1 when the probe succeeds and the GPIO forwarder is instantiated. Note that the aggregator device created via sysfs is asynchronous, i.e. writing into 'new_device' returns without waiting for probe completion, and the probe may succeed, fail, or eventually succeed via deferred probe. Thus, the 'live' attribute may change from 0 to 1 asynchronously without notice. So, editing key/offset/name while it's waiting for deferred probe is prohibited. The configfs auto-generation relies on create_default_group(), which inherently prohibits rmdir(2). To align with the limitation, this commit also prohibits mkdir(2) for them. When users want to change the number of lines for an aggregator initialized via 'new_device', they need to tear down the device using 'delete_device' and reconfigure it from scratch. This does not break previous behavior; users of legacy sysfs interface simply gain additional almost read-only configfs exposure. Still, users can write to the 'live' attribute to toggle the device unless it's waiting for deferred probe. So once probe succeeds, they can deactivate it in the same manner as the devices initialized via configfs. Signed-off-by: Koichiro Den <koichiro.den@canonical.com> Link: https://lore.kernel.org/r/20250407043019.4105613-7-koichiro.den@canonical.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-04-09gpio: aggregator: rename 'name' to 'key' in gpio_aggregator_parse()Koichiro Den
Rename the local variable 'name' in gpio_aggregator_parse() to 'key' because struct gpio_aggregator_line now uses the 'name' field for the custom line name and the local variable actually represents a 'key'. This change prepares for the next but one commit. No functional change. Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Koichiro Den <koichiro.den@canonical.com> Link: https://lore.kernel.org/r/20250407043019.4105613-6-koichiro.den@canonical.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-04-09gpio: aggregator: introduce basic configfs interfaceKoichiro Den
The existing sysfs 'new_device' interface has several limitations: * No way to determine when GPIO aggregator creation is complete. * No way to retrieve errors when creating a GPIO aggregator. * No way to trace a GPIO line of an aggregator back to its corresponding physical device. * The 'new_device' echo does not indicate which virtual gpiochip<N> was created. * No way to assign names to GPIO lines exported through an aggregator. Introduce the new configfs interface for gpio-aggregator to address these limitations. It provides a more streamlined, modern, and extensible configuration method. For backward compatibility, the 'new_device' interface and its behavior is retained for now. This commit implements basic functionalities: /config/gpio-aggregator/<name-of-your-choice>/ /config/gpio-aggregator/<name-of-your-choice>/live /config/gpio-aggregator/<name-of-your-choice>/dev_name /config/gpio-aggregator/<name-of-your-choice>/<lineY>/ /config/gpio-aggregator/<name-of-your-choice>/<lineY>/key /config/gpio-aggregator/<name-of-your-choice>/<lineY>/offset /config/gpio-aggregator/<name-of-your-choice>/<lineY>/name Basic setup flow is: 1. Create a directory for a GPIO aggregator. 2. Create subdirectories for each line you want to instantiate. 3. In each line directory, configure the key and offset. The key/offset semantics are as follows: * If offset is >= 0: - key specifies the name of the chip this GPIO belongs to - offset specifies the line offset within that chip. * If offset is <0: - key needs to specify the GPIO line name. 4. Return to the aggregator's root directory and write '1' to the live attribute. For example, the command in the existing kernel doc: echo 'e6052000.gpio 19 e6050000.gpio 20-21' > new_device is equivalent to: mkdir /sys/kernel/config/gpio-aggregator/<custom-name> # Change <custom-name> to name of your choice (e.g. "aggr0") cd /sys/kernel/config/gpio-aggregator/<custom-name> mkdir line0 line1 line2 # Only "line<Y>" naming allowed. echo e6052000.gpio > line0/key echo 19 > line0/offset echo e6050000.gpio > line1/key echo 20 > line1/offset echo e6050000.gpio > line2/key echo 21 > line2/offset echo 1 > live The corresponding gpio_device id can be identified as follows: cd /sys/kernel/config/gpio-aggregator/<custom-name> ls -d /sys/devices/platform/`cat dev_name`/gpiochip* Also, via configfs, custom GPIO line name can be set like this: cd /sys/kernel/config/gpio-aggregator/<custom-name> echo "abc" > line1/name Signed-off-by: Koichiro Den <koichiro.den@canonical.com> Link: https://lore.kernel.org/r/20250407043019.4105613-5-koichiro.den@canonical.com [Bartosz: remove stray newlines] Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-04-09gpio: aggregator: add gpio_aggregator_{alloc,free}()Koichiro Den
Prepare for the upcoming configfs interface. These functions will be used by both the existing sysfs interface and the new configfs interface, reducing code duplication. No functional change. Signed-off-by: Koichiro Den <koichiro.den@canonical.com> Link: https://lore.kernel.org/r/20250407043019.4105613-4-koichiro.den@canonical.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-04-09gpio: aggregator: unify function namingKoichiro Den
Unify function names to use gpio_aggregator_ prefix (except GPIO forwarder implementations, which remain unchanged in subsequent commits). While at it, rename the pre-existing gpio_aggregator_free() to gpio_aggregator_destory(), since that name will be used by new alloc/free functions introduced in the next commit, for which the name is more appropriate. No functional change. Signed-off-by: Koichiro Den <koichiro.den@canonical.com> Link: https://lore.kernel.org/r/20250407043019.4105613-3-koichiro.den@canonical.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-04-09gpio: aggregator: reorder functions to prepare for configfs introductionKoichiro Den
Reorder functions in drivers/gpio/gpio-aggregator.c to prepare for the configfs-based interface additions in subsequent commits. Arrange the code so that the configfs implementations will appear above the existing sysfs-specific code, since the latter will partly depend on the configfs interface implementations when it starts to expose the settings to configfs. The order in drivers/gpio/gpio-aggregator.c will be as follows: * Basic gpio_aggregator/gpio_aggregator_line representations * Common utility functions * GPIO Forwarder implementations * Configfs interface implementations * Sysfs interface implementations * Platform device implementations * Module init/exit implementations This separate commit ensures a clean diff for the subsequent commits. No functional change. Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Koichiro Den <koichiro.den@canonical.com> Link: https://lore.kernel.org/r/20250407043019.4105613-2-koichiro.den@canonical.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-04-09Merge tag 'gpiod-is-equal-for-v6.16-rc1' of ↵Bartosz Golaszewski
gitolite.kernel.org:pub/scm/linux/kernel/git/brgl/linux into gpio/for-next Immutable tag for the regulator tree to pull from gpio: provide gpiod_is_equal()
2025-04-09gpio: provide gpiod_is_equal()Bartosz Golaszewski
There are users in the kernel that directly compare raw GPIO descriptor pointers in order to determine whether they refer to the same physical GPIO pin. This accidentally works like this but is not guaranteed by any API contract. Let's provide a comparator function that hides the actual logic. Reviewed-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20250407-gpiod-is-equal-v1-1-7d85f568ae6e@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-04-08gpiolib: support parsing gpio three-cell interrupts schemeYixun Lan
gpio irq which using three-cell scheme should always call instance_match() function to find the correct irqdomain. The select() function will be called with !DOMAIN_BUS_ANY, so for specific gpio irq driver, it need to set bus token explicitly, something like: irq_domain_update_bus_token(girq->domain, DOMAIN_BUS_WIRED); Signed-off-by: Yixun Lan <dlan@gentoo.org> Link: https://lore.kernel.org/r/20250408-04-gpio-irq-threecell-v4-1-fd170d5e2d2b@gentoo.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-04-07gpio: Enable Blaize BLZP1600 GPIO supportNikolaos Pasaloukos
Blaize BLZP1600 GPIO controller is provided by VeriSilicon Microelectronics based on the GPIO APB v0.2 design. It has 32 input/output ports which can be configured as edge or level triggered interrupts. It also provides a de-bounce feature. This controller is used on the Blaize BLZP1600 SoC. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Nikolaos Pasaloukos <nikolaos.pasaloukos@blaize.com> Link: https://lore.kernel.org/r/20250327-kernel-upstreaming-add_gpio_support-v2-2-bbe51f8d66da@blaize.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-04-07Merge tag 'gpio-s5m8767-polarity-quirk-for-v6.16-rc1' into gpio/for-nextBartosz Golaszewski
gpiolib: of: Add polarity quirk for s5m8767
2025-04-07gpiolib: of: Add polarity quirk for s5m8767Peng Fan
This is prepare patch for switching s5m8767 regulator driver to use GPIO descriptor. DTS for exynos5250 spring incorrectly specifies "active low" polarity for the DVS and DS line. But per datasheet, they are actually active high. So add polarity quirk for it. Signed-off-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20250327004945.563765-1-peng.fan@oss.nxp.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-04-07gpiolib: don't allow setting values on input linesBartosz Golaszewski
Some drivers as well as the character device and sysfs code check whether the line actually is in output mode before allowing the user to set a value. However, GPIO value setters now return integer values and can indicate failures. This allows us to move these checks into the core code. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20250311-gpio-set-check-output-v1-1-d971bca9e6fa@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-04-06Merge tag 'timers-cleanups-2025-04-06' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer cleanups from Thomas Gleixner: "A set of final cleanups for the timer subsystem: - Convert all del_timer[_sync]() instances over to the new timer_delete[_sync]() API and remove the legacy wrappers. Conversion was done with coccinelle plus some manual fixups as coccinelle chokes on scoped_guard(). - The final cleanup of the hrtimer_init() to hrtimer_setup() conversion. This has been delayed to the end of the merge window, so that all patches which have been merged through other trees are in mainline and all new users are catched. Doing this right before rc1 ensures that new code which is merged post rc1 is not introducing new instances of the original functionality" * tag 'timers-cleanups-2025-04-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: tracing/timers: Rename the hrtimer_init event to hrtimer_setup hrtimers: Rename debug_init_on_stack() to debug_setup_on_stack() hrtimers: Rename debug_init() to debug_setup() hrtimers: Rename __hrtimer_init_sleeper() to __hrtimer_setup_sleeper() hrtimers: Remove unnecessary NULL check in hrtimer_start_range_ns() hrtimers: Make callback function pointer private hrtimers: Merge __hrtimer_init() into __hrtimer_setup() hrtimers: Switch to use __htimer_setup() hrtimers: Delete hrtimer_init() treewide: Convert new and leftover hrtimer_init() users treewide: Switch/rename to timer_delete[_sync]()
2025-04-06Merge tag 'irq-urgent-2025-04-06' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull more irq updates from Thomas Gleixner: "A set of updates for the interrupt subsystem: - A treewide cleanup for the irq_domain code, which makes the naming consistent and gets rid of the original oddity of naming domains 'host'. This is a trivial mechanical change and is done late to ensure that all instances have been catched and new code merged post rc1 wont reintroduce new instances. - A trivial consistency fix in the migration code The recent introduction of irq_force_complete_move() in the core code, causes a problem for the nostalgia crowd who maintains ia64 out of tree. The code assumes that hierarchical interrupt domains are enabled and dereferences irq_data::parent_data unconditionally. That works in mainline because both architectures which enable that code have hierarchical domains enabled. Though it breaks the ia64 build, which enables the functionality, but does not have hierarchical domains. While it's not really a problem for mainline today, this unconditional dereference is inconsistent and trivially fixable by using the existing helper function irqd_get_parent_data(), which has the appropriate #ifdeffery in place" * tag 'irq-urgent-2025-04-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: genirq/migration: Use irqd_get_parent_data() in irq_force_complete_move() irqdomain: Stop using 'host' for domain irqdomain: Rename irq_get_default_host() to irq_get_default_domain() irqdomain: Rename irq_set_default_host() to irq_set_default_domain()
2025-04-05Merge tag 'drm-next-2025-04-05' of https://gitlab.freedesktop.org/drm/kernelLinus Torvalds
Pull drm fixes from Dave Airlie: "Weekly fixes, mostly from the end of last week, this week was very quiet, maybe you scared everyone away. It's mostly amdgpu, and xe, with some i915, adp and bridge bits, since I think this is overly quiet I'd expect rc2 to be a bit more lively. bridge: - tda998x: Select CONFIG_DRM_KMS_HELPER amdgpu: - Guard against potential division by 0 in fan code - Zero RPM support for SMU 14.0.2 - Properly handle SI and CIK support being disabled - PSR fixes - DML2 fixes - DP Link training fix - Vblank fixes - RAS fixes - Partitioning fix - SDMA fix - SMU 13.0.x fixes - Rom fetching fix - MES fixes - Queue reset fix xe: - Fix NULL pointer dereference on error path - Add missing HW workaround for BMG - Fix survivability mode not triggering - Fix build warning when DRM_FBDEV_EMULATION is not set i915: - Bounds check for scalers in DSC prefill latency computation - Fix build by adding a missing include adp: - Fix error handling in plane setup" # -----BEGIN PGP SIGNATURE----- * tag 'drm-next-2025-04-05' of https://gitlab.freedesktop.org/drm/kernel: (34 commits) drm/i2c: tda998x: select CONFIG_DRM_KMS_HELPER drm/amdgpu/gfx12: fix num_mec drm/amdgpu/gfx11: fix num_mec drm/amd/pm: Add gpu_metrics_v1_8 drm/amdgpu: Prefer shadow rom when available drm/amd/pm: Update smu metrics table for smu_v13_0_6 drm/amd/pm: Remove host limit metrics support Remove unnecessary firmware version check for gc v9_4_2 drm/amdgpu: stop unmapping MQD for kernel queues v3 Revert "drm/amdgpu/sdma_v4_4_2: update VM flush implementation for SDMA" drm/amdgpu: Parse all deferred errors with UMC aca handle drm/amdgpu: Update ta ras block drm/amdgpu: Add NPS2 to DPX compatible mode drm/amdgpu: Use correct gfx deferred error count drm/amd/display: Actually do immediate vblank disable drm/amd/display: prevent hang on link training fail Revert "drm/amd/display: dml2 soc dscclk use DPM table clk setting" drm/amd/display: Increase vblank offdelay for PSR panels drm/amd: Handle being compiled without SI or CIK support better drm/amd/pm: Add zero RPM enabled OD setting support for SMU14.0.2 ...
2025-04-05Merge tag 'input-for-v6.15-rc0' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Pull input updates from Dmitry Torokhov: - a brand new driver for touchpads and touchbars in newer Apple devices - support for Berlin-A series in goodix-berlin touchscreen driver - improvements to matrix_keypad driver to better handle GPIOs toggling - assorted small cleanups in other input drivers * tag 'input-for-v6.15-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: goodix_berlin - add support for Berlin-A series dt-bindings: input: goodix,gt9916: Document gt9897 compatible dt-bindings: input: matrix_keypad - add wakeup-source property dt-bindings: input: matrix_keypad - add missing property Input: pm8941-pwrkey - fix dev_dbg() output in pm8941_pwrkey_irq() Input: synaptics - hide unused smbus_pnp_ids[] array Input: apple_z2 - fix potential confusion in Kconfig Input: matrix_keypad - use fsleep for delays after activating columns Input: matrix_keypad - add settle time after enabling all columns dt-bindings: input: matrix_keypad: add settle time after enabling all columns dt-bindings: input: matrix_keypad: convert to YAML dt-bindings: input: Correct indentation and style in DTS example MAINTAINERS: Add entries for Apple Z2 touchscreen driver Input: apple_z2 - add a driver for Apple Z2 touchscreens dt-bindings: input: touchscreen: Add Z2 controller Input: Switch to use hrtimer_setup() Input: drop vb2_ops_wait_prepare/finish
2025-04-05treewide: Convert new and leftover hrtimer_init() usersThomas Gleixner
hrtimer_setup() takes the callback function pointer as argument and initializes the timer completely. Replace hrtimer_init() and the open coded initialization of hrtimer::function with the new setup mechanism. Coccinelle scripted cleanup. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>
generated by cgit (git 2.34.1) at 2025-09-13 21:45:58 +0000