Changes in gpio-cdev

a23e1966932464e1c5226cb9ac4ce1d5fc10ba22 - Merge branch 'next' into for-linus

Mon, 15 Jul 2024 23:03:44 +0200

Merge branch 'next' into for-linusPrepare input updates for 6.11 merge window. List of files: /linux/Documentation/ABI/testing/gpio-cdev

6f47c7ae8c7afaf9ad291d39f0d3974f191a7946 - Merge tag 'v6.9' into next

Tue, 28 May 2024 06:37:18 +0200

Merge tag 'v6.9' into nextSync up with the mainline to bring in the new cleanup API. List of files: /linux/Documentation/ABI/testing/gpio-cdev

60a2f25de7b8b785baee2932db932ae9a5b8c86d - Merge drm/drm-next into drm-intel-gt-next

Thu, 16 May 2024 09:33:01 +0200

Merge drm/drm-next into drm-intel-gt-nextSome display refactoring patches are needed in order to allow conflict-less merging.Signed-off-by: Tvrtko Ursulin List of files: /linux/Documentation/ABI/testing/gpio-cdev

594ce0b8a998aa4d05827cd7c0d0dcec9a1e3ae2 - Merge topic branches 'clkdev' and 'fixes' into for-linus

Mon, 10 Jun 2024 13:03:21 +0200

Merge topic branches 'clkdev' and 'fixes' into for-linus List of files: /linux/Documentation/ABI/testing/gpio-cdev

b228ab57e51b62663a80ca820c87ba2650583f08 - Merge branch 'master' into mm-stable

Mon, 18 Mar 2024 17:55:12 +0100

Merge branch 'master' into mm-stable List of files: /linux/Documentation/ABI/testing/gpio-cdev

79790b6818e96c58fe2bffee1b418c16e64e7b80 - Merge drm/drm-next into drm-xe-next

Fri, 12 Apr 2024 15:14:25 +0200

Merge drm/drm-next into drm-xe-nextBackmerging drm-next in order to get up-to-date and in particularto access commit 9ca5facd0400f610f3f7f71aeb7fc0b949a48c67.Signed-off-by: Thomas Hellström List of files: /linux/Documentation/ABI/testing/gpio-cdev

3e5a516f3bf1a33f2bf219f570e9b5c031616f6a - Merge tag 'phy_dp_modes_6.10' into msm-next-lumag

Mon, 08 Apr 2024 17:35:51 +0200

Merge tag 'phy_dp_modes_6.10' into msm-next-lumagMerge DisplayPort subnode API in order to allow DisplayPort driver toconfigure the PHYs either to the DP or eDP mode, depending on hardwareconfiguration.Signed-off-by: Dmitry Baryshkov List of files: /linux/Documentation/ABI/testing/gpio-cdev

5add703f6acad1c63f8a532b6de56e50d548e904 - Merge drm/drm-next into drm-intel-next

Tue, 02 Apr 2024 14:17:13 +0200

Merge drm/drm-next into drm-intel-nextCatching up on 6.9-rc2Signed-off-by: Rodrigo Vivi List of files: /linux/Documentation/ABI/testing/gpio-cdev

0d21364c6e8dc1f62c34bbc49d49935c8b01844c - Merge drm/drm-next into drm-misc-next

Tue, 02 Apr 2024 09:51:30 +0200

Merge drm/drm-next into drm-misc-nextBackmerging to get v6.9-rc2 changes into drm-misc-next.Signed-off-by: Thomas Zimmermann List of files: /linux/Documentation/ABI/testing/gpio-cdev

b7e1e969c887c897947fdc3754fe9b0c24acb155 - Merge branch 'topic/sound-devel-6.10' into for-next

Tue, 26 Mar 2024 12:19:11 +0100

Merge branch 'topic/sound-devel-6.10' into for-next List of files: /linux/Documentation/ABI/testing/gpio-cdev

537c2e91d3549e5d6020bb0576cf9b54a845255f - Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Fri, 22 Mar 2024 00:14:13 +0100

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netCross-merge networking fixes after downstream PR.Signed-off-by: Jakub Kicinski List of files: /linux/Documentation/ABI/testing/gpio-cdev

f4566a1e73957800df75a3dd2dccee8a4697f327 - Merge tag 'v6.9-rc1' into sched/core, to pick up fixes and to refresh the branch

Mon, 25 Mar 2024 11:32:29 +0100

Merge tag 'v6.9-rc1' into sched/core, to pick up fixes and to refresh the branchSigned-off-by: Ingo Molnar List of files: /linux/Documentation/ABI/testing/gpio-cdev

100c85421b52e41269ada88f7d71a6b8a06c7a11 - Merge tag 'asoc-fix-v6.9-rc2' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

Fri, 05 Apr 2024 08:48:12 +0200

Merge tag 'asoc-fix-v6.9-rc2' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linusASoC: Fixes for v6.9A relatively large set of fixes here, the biggest piece of it is aseries correcting some problems with the delay reporting for Intel SOFcards but there's a bunch of other things. Everything here is driverspecific except for a fix in the core for an issue with sign extensionhandling volume controls. List of files: /linux/Documentation/ABI/testing/gpio-cdev

36a1818f5a1e50b805317ba13f827067d50f6970 - Merge drm/drm-fixes into drm-misc-fixes

Mon, 25 Mar 2024 21:11:58 +0100

Merge drm/drm-fixes into drm-misc-fixesBackmerging to get drm-misc-fixes to the state of v6.9-rc1.Signed-off-by: Thomas Zimmermann List of files: /linux/Documentation/ABI/testing/gpio-cdev

69afef4af453c913e31640f3b31103847b97fe2f - Merge tag 'gpio-updates-for-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Wed, 13 Mar 2024 19:14:55 +0100

Merge tag 'gpio-updates-for-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linuxPull gpio updates from Bartosz Golaszewski: "The biggest feature is the locking overhaul. Up until now the synchronization in the GPIO subsystem was broken. There was a single spinlock "protecting" multiple data structures but doing it wrong (as evidenced by several places where it would be released when a sleeping function was called and then reacquired without checking the protected state). We tried to use an RW semaphore before but the main issue with GPIO is that we have drivers implementing the interfaces in both sleeping and non-sleeping ways as well as user-facing interfaces that can be called both from process as well as atomic contexts. Both ends converge in the same code paths that can use neither spinlocks nor mutexes. The only reasonable way out is to use SRCU and go mostly lockless. To that end: we add several SRCU structs in relevant places and use them to assure consistency between API calls together with atomic reads and writes of GPIO descriptor flags where it makes sense. This code has spent several weeks in next and has received several fixes in the first week or two after which it stabilized nicely. The GPIO subsystem is now resilient to providers being suddenly unbound. We managed to also remove the existing character device RW semaphore and the obsolete global spinlock. Other than the locking rework we have one new driver (for Chromebook EC), much appreciated documentation improvements from Kent and the regular driver improvements, DT-bindings updates and GPIOLIB core tweaks. Serialization rework: - use SRCU to serialize access to the global GPIO device list, to GPIO device structs themselves and to GPIO descriptors - make the GPIO subsystem resilient to the GPIO providers being unbound while the API calls are in progress - don't dereference the SRCU-protected chip pointer if the information we need can be obtained from the GPIO device structure - move some of the information contained in struct gpio_chip to struct gpio_device to further reduce the need to dereference the former - pass the GPIO device struct instead of the GPIO chip to sysfs callback to, again, reduce the need for accessing the latter - get GPIO descriptors from the GPIO device, not from the chip for the same reason - allow for mostly lockless operation of the GPIO driver API: assure consistency with SRCU and atomic operations - remove the global GPIO spinlock - remove the character device RW semaphore Core GPIOLIB: - constify pointers in GPIO API where applicable - unify the GPIO counting APIs for ACPI and OF - provide a macro for iterating over all GPIOs, not only the ones that are requested - remove leftover typedefs - pass the consumer device to GPIO core in devm_fwnode_gpiod_get_index() for improved logging - constify the GPIO bus type - don't warn about removing GPIO chips with descriptors still held by users as we can now handle this situation gracefully - remove unused logging helpers - unexport functions that are only used internally in the GPIO subsystem - set the device type (assign the relevant struct device_type) for GPIO devices New drivers: - add the ChromeOS EC GPIO driver Driver improvements: - allow building gpio-vf610 with COMPILE_TEST as well as disabling it in menuconfig (before it was always built for i.MX cofigs) - count the number of EICs using the device properties instead of hard-coding it in gpio-eic-sprd - improve the device naming, extend the debugfs output and add lockdep asserts to gpio-sim DT bindings: - document the 'label' property for gpio-pca9570 - convert aspeed,ast2400-gpio bindings to DT schema - disallow unevaluated properties for gpio-mvebu - document a new model in renesas,rcar-gpio Documentation: - improve the character device kerneldocs in user-space headers - add proper documentation for the character device uAPI (both v1 and v2) - move the sysfs and gpio-mockup docs into the "obsolete" section - improve naming consistency for GPIO terms - clarify the line values description for sysfs - minor docs improvements - improve the driver API contract for setting GPIO direction - mark unsafe APIs as deprecated in kerneldocs and suggest replacements Other: - remove an obsolete test from selftests"* tag 'gpio-updates-for-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (79 commits) gpio: sysfs: repair export returning -EPERM on 1st attempt selftest: gpio: remove obsolete gpio-mockup test gpiolib: Deduplicate cleanup for-loop in gpiochip_add_data_with_key() dt-bindings: gpio: aspeed,ast2400-gpio: Convert to DT schema gpio: acpi: Make acpi_gpio_count() take firmware node as a parameter gpio: of: Make of_gpio_get_count() take firmware node as a parameter gpiolib: Pass consumer device through to core in devm_fwnode_gpiod_get_index() gpio: sim: use for_each_hwgpio() gpio: provide for_each_hwgpio() gpio: don't warn about removing GPIO chips with active users anymore gpio: sim: delimit the fwnode name with a ":" when generating labels gpio: sim: add lockdep asserts gpio: Add ChromeOS EC GPIO driver gpio: constify of_phandle_args in of_find_gpio_device_by_xlate() gpio: fix memory leak in gpiod_request_commit() gpio: constify opaque pointer "data" in gpio_device_find() gpio: cdev: fix a NULL-pointer dereference with DEBUG enabled gpio: uapi: clarify default_values being logical gpio: sysfs: fix inverted pointer logic gpio: don't let lockdep complain about inherently dangerous RCU usage ... List of files: /linux/Documentation/ABI/testing/gpio-cdev

c27cdd7a3010b4e0b9248c86c120335585afd085 - Documentation: ABI: update gpio-cdev to reference chardev.rst

Mon, 15 Jan 2024 01:48:40 +0100

Documentation: ABI: update gpio-cdev to reference chardev.rstUpdate the gpio-cdev interface document to refer to the newchardev.rst.Signed-off-by: Kent Gibson Signed-off-by: Bartosz Golaszewski List of files: /linux/Documentation/ABI/testing/gpio-cdev

cdd38c5f1ce4398ec58fec95904b75824daab7b5 - Merge remote-tracking branch 'net/master'

Wed, 24 Feb 2021 13:36:58 +0100

Merge remote-tracking branch 'net/master' List of files: /linux/Documentation/ABI/testing/gpio-cdev

cbecf716ca618fd44feda6bd9a64a8179d031fc5 - Merge branch 'next' into for-linus

Tue, 23 Feb 2021 06:35:15 +0100

Merge branch 'next' into for-linusPrepare input updates for 5.12 merge window. List of files: /linux/Documentation/ABI/testing/gpio-cdev

415e915fdfc775ad0c6675fde1008f6f43dd6251 - Merge tag 'v5.11' into next

Tue, 23 Feb 2021 06:21:03 +0100

Merge tag 'v5.11' into nextMerge with mainline to get latest APIs and device tree bindings. List of files: /linux/Documentation/ABI/testing/gpio-cdev

500050f0d28868af302a3c24d7d1d0191521286e - Merge branch 'fixes-omap3' into fixes

Fri, 18 Dec 2020 08:15:12 +0100

Merge branch 'fixes-omap3' into fixes List of files: /linux/Documentation/ABI/testing/gpio-cdev