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2025-05-27Merge tag 'irq-drivers-2025-05-25' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq controller updates from Thomas Gleixner: "Update for interrupt chip drivers: - Convert the generic interrupt chip to lock guards to remove copy & pasta boilerplate code and gotos. - A new driver fot the interrupt controller in the EcoNet EN751221 MIPS SoC. - Extend the SG2042-MSI driver to support the new SG2044 SoC - Updates and cleanups for the (ancient) VT8500 driver - Improve the scalability of the ARM GICV4.1 ITS driver by utilizing node local copies a VM's interrupt translation table when possible. This results in a 12% reduction of VM IPI latency in certain workloads. - The usual cleanups and improvements all over the place" * tag 'irq-drivers-2025-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (25 commits) irqchip/irq-pruss-intc: Simplify chained interrupt handler setup irqchip/gic-v4.1: Use local 4_1 ITS to generate VSGI irqchip/econet-en751221: Switch to of_fwnode_handle() irqchip/irq-vt8500: Switch to irq_domain_create_*() irqchip/econet-en751221: Switch to irq_domain_create_linear() irqchip/irq-vt8500: Use fewer global variables and add error handling irqchip/irq-vt8500: Use a dedicated chained handler function irqchip/irq-vt8500: Don't require 8 interrupts from a chained controller irqchip/irq-vt8500: Drop redundant copy of the device node pointer irqchip/irq-vt8500: Split up ack/mask functions irqchip/sg2042-msi: Fix wrong type cast in sg2044_msi_irq_ack() irqchip/sg2042-msi: Add the Sophgo SG2044 MSI interrupt controller irqchip/sg2042-msi: Introduce configurable chipinfo for SG2042 irqchip/sg2042-msi: Rename functions and data structures to be SG2042 agnostic dt-bindings: interrupt-controller: Add Sophgo SG2044 MSI controller genirq/generic-chip: Fix incorrect lock guard conversions genirq/generic-chip: Remove unused lock wrappers irqchip: Convert generic irqchip locking to guards gpio: mvebu: Convert generic irqchip locking to guard() ARM: orion/gpio:: Convert generic irqchip locking to guard() ...
2025-05-22Merge tag 'pinctrl-v6.15-4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl Pull pin control fixes from Linus Walleij: "This deals with a crash in the Qualcomm pin controller GPIO parts when using hogs. The first patch to gpiolib makes gpiochip_line_is_valid() NULL-tolerant. The second patch fixes the actual problem" * tag 'pinctrl-v6.15-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: pinctrl: qcom: switch to devm_register_sys_off_handler() gpiolib: don't crash on enabling GPIO HOG pins
2025-05-22gpio: timberdale: select GPIOLIB_IRQCHIPPeng Fan
This driver uses gpiochip_irq_reqres() and gpiochip_irq_relres() which are only built with GPIOLIB_IRQCHIP=y. Add the missing Kconfig select. Fixes: 2993d2dd8ff4 ("gpio: timberdale: Make irq_chip immutable") Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://lore.kernel.org/r/20250522-gpio-fix-v1-4-98ceae7c4c3c@nxp.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-22gpio: lpc18xx: select GPIOLIB_IRQCHIPPeng Fan
This driver uses gpiochip_irq_reqres() and gpiochip_irq_relres() which are only built with GPIOLIB_IRQCHIP=y. Add the missing Kconfig select. Fixes: 289e42df1358 ("gpio: lpc18xx: Make irq_chip immutable") Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://lore.kernel.org/r/20250522-gpio-fix-v1-3-98ceae7c4c3c@nxp.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-22gpio: grgpio: select GPIOLIB_IRQCHIPPeng Fan
This driver uses gpiochip_irq_reqres() and gpiochip_irq_relres() which are only built with GPIOLIB_IRQCHIP=y. Add the missing Kconfig select. Fixes: a30be40bf1d4 ("gpio: grgpio: Make irq_chip immutable") Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://lore.kernel.org/r/20250522-gpio-fix-v1-2-98ceae7c4c3c@nxp.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-22gpio: bcm-kona: select GPIOLIB_IRQCHIPPeng Fan
This driver uses gpiochip_irq_reqres() and gpiochip_irq_relres() which are only built with GPIOLIB_IRQCHIP=y. Add the missing Kconfig select. Fixes: 7b04f98027af ("gpio: bcm-kona: make irq_chip immutable") Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://lore.kernel.org/r/20250522-gpio-fix-v1-1-98ceae7c4c3c@nxp.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-21gpio: davinci: select GPIOLIB_IRQCHIPPeng Fan
This driver uses gpiochip_irq_reqres() and gpiochip_irq_relres() which are only built with GPIOLIB_IRQCHIP=y. Add the missing Kconfig select. Fixes: 3f50bb3124d7 ("gpio: davinci: Make irq_chip immutable") Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202505210606.PudPm5pC-lkp@intel.com/ Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://lore.kernel.org/r/20250521072048.1053190-1-peng.fan@oss.nxp.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-21Merge tag 'intel-gpio-v6.16-1' of ↵Bartosz Golaszewski
git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-gpio-intel into gpio/for-next intel-gpio for v6.16-1 * Split GPIO ACPI quirks to its own file * Refactored GPIO ACPI library to shrink the code The following is an automated git shortlog grouped by driver: gpiolib: - acpi: Update file references in the Documentation and MAINTAINERS - acpi: Move quirks to a separate file - acpi: Add acpi_gpio_need_run_edge_events_on_boot() getter - acpi: Handle deferred list via new API - acpi: Make sure we fill struct acpi_gpio_info - acpi: Switch to use enum in acpi_gpio_in_ignore_list() - acpi: Use temporary variable for struct acpi_gpio_info - acpi: Deduplicate some code in __acpi_find_gpio() - acpi: Reuse struct acpi_gpio_params in struct acpi_gpio_lookup - acpi: Rename par to params for better readability - acpi: Reduce memory footprint for struct acpi_gpio_params - acpi: Remove index parameter from acpi_gpio_property_lookup() - acpi: Improve struct acpi_gpio_info memory footprint
2025-05-21gpiolib: acpi: Move quirks to a separate fileAndy Shevchenko
The gpiolib-acpi.c is huge enough even without DMI quirks. Move them to a separate file for a better maintenance. No functional change intended. Reviewed-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2025-05-21gpiolib: acpi: Add acpi_gpio_need_run_edge_events_on_boot() getterAndy Shevchenko
Add acpi_gpio_need_run_edge_events_on_boot() getter which moves towards isolating the GPIO ACPI and quirk APIs. It will helps splitting them completely in the next changes. No functional changes. Reviewed-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2025-05-21gpiolib: acpi: Handle deferred list via new APIAndy Shevchenko
Introduce a new API and handle deferred list via it which moves towards isolating the GPIO ACPI and quirk APIs. It will helps splitting them completely in the next changes. No functional changes. Reviewed-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2025-05-21gpiolib: acpi: Switch to use enum in acpi_gpio_in_ignore_list()Andy Shevchenko
Switch to use enum instead of pointers in acpi_gpio_in_ignore_list() which moves towards isolating the GPIO ACPI and quirk APIs. It will helps splitting them completely in the next changes. No functional changes. Reviewed-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2025-05-21gpiolib: acpi: Make sure we fill struct acpi_gpio_infoAndy Shevchenko
The previous refactoring missed the filling of the struct acpi_gpio_info and that's how the lot of the code got eliminated. Restore those pieces by passing the pointer all down in the call stack. With this, the code grows by ~6%, but in conjunction with the previous refactoring it still gives -387 bytes add/remove: 2/0 grow/shrink: 5/1 up/down: 852/-35 (817) Function old new delta acpi_dev_gpio_irq_wake_get_by 129 695 +566 acpi_find_gpio 216 354 +138 acpi_find_gpio.__UNIQUE_ID_ddebug504 - 56 +56 acpi_dev_gpio_irq_wake_get_by.__UNIQUE_ID_ddebug506 - 56 +56 acpi_populate_gpio_lookup 536 548 +12 acpi_gpio_property_lookup 414 426 +12 acpi_get_gpiod_by_index 307 319 +12 __acpi_find_gpio 638 603 -35 Total: Before=14154, After=14971, chg +5.77% As a positive side effect, it improves memory footprint for struct acpi_gpio_lookup. `pahole` difference before and after: - /* size: 64, cachelines: 1, members: 4 */ - /* member types with holes: 1, total: 1 */ + /* size: 32, cachelines: 1, members: 4 */ Reported-by: Kees Bakker <kees@ijzerbout.nl> Closes: https://lore.kernel.org/r/9715c8dd-38df-48fd-a9d1-7a78163dc989@ijzerbout.nl Fixes: 8b4f52ef7a41 ("gpiolib: acpi: Deduplicate some code in __acpi_find_gpio()") Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2025-05-21gpiolib: acpi: Use temporary variable for struct acpi_gpio_infoAndy Shevchenko
Use temporary variable to access the struct acpi_gpio_info members. This will help further changes to be cleaner. No functional change intended. Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2025-05-20gpiolib: don't crash on enabling GPIO HOG pinsDmitry Baryshkov
On Qualcomm platforms if the board uses GPIO hogs msm_pinmux_request() calls gpiochip_line_is_valid(). After commit 8015443e24e7 ("gpio: Hide valid_mask from direct assignments") gpiochip_line_is_valid() uses gc->gpiodev, which is NULL when GPIO hog pins are being processed. Thus after this commit using GPIO hogs causes the following crash. In order to fix this, verify that gc->gpiodev is not NULL. Note: it is not possible to reorder calls (e.g. by calling msm_gpio_init() before pinctrl registration or by splitting pinctrl_register() into _and_init() and pinctrl_enable() and calling the latter function after msm_gpio_init()) because GPIO chip registration would fail with EPROBE_DEFER if pinctrl is not enabled at the time of registration. pc : gpiochip_line_is_valid+0x4/0x28 lr : msm_pinmux_request+0x24/0x40 sp : ffff8000808eb870 x29: ffff8000808eb870 x28: 0000000000000000 x27: 0000000000000000 x26: 0000000000000000 x25: ffff726240f9d040 x24: 0000000000000000 x23: ffff7262438c0510 x22: 0000000000000080 x21: ffff726243ea7000 x20: ffffab13f2c4e698 x19: 0000000000000080 x18: 00000000ffffffff x17: ffff726242ba6000 x16: 0000000000000100 x15: 0000000000000028 x14: 0000000000000000 x13: 0000000000002948 x12: 0000000000000003 x11: 0000000000000078 x10: 0000000000002948 x9 : ffffab13f50eb5e8 x8 : 0000000003ecb21b x7 : 000000000000002d x6 : 0000000000000b68 x5 : 0000007fffffffff x4 : ffffab13f52f84a8 x3 : ffff8000808eb804 x2 : ffffab13f1de8190 x1 : 0000000000000080 x0 : 0000000000000000 Call trace: gpiochip_line_is_valid+0x4/0x28 (P) pin_request+0x208/0x2c0 pinmux_enable_setting+0xa0/0x2e0 pinctrl_commit_state+0x150/0x26c pinctrl_enable+0x6c/0x2a4 pinctrl_register+0x3c/0xb0 devm_pinctrl_register+0x58/0xa0 msm_pinctrl_probe+0x2a8/0x584 sdm845_pinctrl_probe+0x20/0x88 platform_probe+0x68/0xc0 really_probe+0xbc/0x298 __driver_probe_device+0x78/0x12c driver_probe_device+0x3c/0x160 __device_attach_driver+0xb8/0x138 bus_for_each_drv+0x84/0xe0 __device_attach+0x9c/0x188 device_initial_probe+0x14/0x20 bus_probe_device+0xac/0xb0 deferred_probe_work_func+0x8c/0xc8 process_one_work+0x208/0x5e8 worker_thread+0x1b4/0x35c kthread+0x144/0x220 ret_from_fork+0x10/0x20 Code: b5fffba0 17fffff2 9432ec27 f9400400 (f9428800) Fixes: 8015443e24e7 ("gpio: Hide valid_mask from direct assignments") Reported-by: Doug Anderson <dianders@chromium.org> Closes: https://lore.kernel.org/r/CAD=FV=Vg8_ZOLgLoC4WhFPzhVsxXFC19NrF38W6cW_W_3nFjbw@mail.gmail.com Tested-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Reviewed-by: Matti Vaittinen <mazziesaccount@gmail.com> Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Link: https://lore.kernel.org/20250513-pinctrl-msm-fix-v2-1-249999af0fc1@oss.qualcomm.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2025-05-20gpiolib: remove unneeded #ifdefBartosz Golaszewski
We are already within another `#ifdef CONFIG_GPIOLIB_IRQCHIP` in gpiochip_to_irq() so there's no need for another guard. Remove it. Acked-by: Peng Fan <peng.fan@nxp.com> Link: https://lore.kernel.org/r/20250519-gpio-irq-kconfig-fixes-v1-3-fe6ba1c6116d@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-20gpio: mpc8xxx: select GPIOLIB_IRQCHIPBartosz Golaszewski
This driver uses gpiochip_irq_reqres() and gpiochip_irq_relres() which are only built with GPIOLIB_IRQCHIP=y. Add the missing Kconfig select. Fixes: 7688a54d5b53 ("gpio: mpc8xxx: Make irq_chip immutable") Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202505180309.1nosQMkI-lkp@intel.com/ Acked-by: Peng Fan <peng.fan@nxp.com> Link: https://lore.kernel.org/r/20250519-gpio-irq-kconfig-fixes-v1-2-fe6ba1c6116d@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-20gpio: pxa: select GPIOLIB_IRQCHIPBartosz Golaszewski
This driver uses gpiochip_irq_reqres() and gpiochip_irq_relres() which are only built with GPIOLIB_IRQCHIP=y. Add the missing Kconfig select. Fixes: 20117cf426b6 ("gpio: pxa: Make irq_chip immutable") Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202505181429.mzyIatOU-lkp@intel.com/ Acked-by: Peng Fan <peng.fan@nxp.com> Link: https://lore.kernel.org/r/20250519-gpio-irq-kconfig-fixes-v1-1-fe6ba1c6116d@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-16gpio: idt3243x: Switch to irq_find_mapping()Jiri Slaby (SUSE)
irq_linear_revmap() is deprecated, so remove all its uses and supersede them by an identical call to irq_find_mapping(). [ tglx: Fix up subject prefix ] Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/all/20250319092951.37667-44-jirislaby@kernel.org
2025-05-16gpio: Switch to irq_domain_create_*()Jiri Slaby (SUSE)
irq_domain_add_*() interfaces are going away as being obsolete now. Switch to the preferred irq_domain_create_*() ones. Those differ in the node parameter: They take more generic struct fwnode_handle instead of struct device_node. Therefore, of_fwnode_handle() is added around the original parameter. Note some of the users can likely use dev->fwnode directly instead of indirect of_fwnode_handle(dev->of_node). But dev->fwnode is not guaranteed to be set for all, so this has to be investigated on case to case basis (by people who can actually test with the HW). [ tglx: Fix up subject prefix ] Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250319092951.37667-18-jirislaby@kernel.org
2025-05-15gpio: pxa: Make irq_chip immutablePeng Fan
Kernel warns about mutable irq_chips: "not an immutable chip, please consider fixing!" Constify pxa_muxed_gpio_chip, flag the irq_chip as IRQCHIP_IMMUTABLE, add the new helper functions, and call the appropriate gpiolib functions. Signed-off-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20250509-gpio-v1-9-639377c98288@nxp.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-15gpio: timberdale: Make irq_chip immutablePeng Fan
Kernel warns about mutable irq_chips: "not an immutable chip, please consider fixing!" Constify timbgpio_irqchip, flag the irq_chip as IRQCHIP_IMMUTABLE, add the new helper functions, and call the appropriate gpiolib functions. Signed-off-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20250509-gpio-v1-8-639377c98288@nxp.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-15gpio: xgene-sb: Make irq_chip immutablePeng Fan
Kernel warns about mutable irq_chips: "not an immutable chip, please consider fixing!" Constify xgene_gpio_sb_irq_chip, flag the irq_chip as IRQCHIP_IMMUTABLE, add the new helper functions, and call the appropriate gpiolib functions. Signed-off-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20250509-gpio-v1-7-639377c98288@nxp.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-15gpio: davinci: Make irq_chip immutablePeng Fan
Kernel warns about mutable irq_chips: "not an immutable chip, please consider fixing!" Constify gpio_irqchip, flag the irq_chip as IRQCHIP_IMMUTABLE, add the new helper functions, and call the appropriate gpiolib functions. Signed-off-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20250509-gpio-v1-6-639377c98288@nxp.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-15gpio: davinci: Update irq chip dataPeng Fan
Use "struct davinci_gpio_controller *chips" as irq chip data to prepare for immutable irq chip, then it will be easy to get gpio_chip pointer in irq mask/unmask. No functional change. Signed-off-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20250509-gpio-v1-5-639377c98288@nxp.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-15gpio: mpc8xxx: Make irq_chip immutablePeng Fan
Kernel warns about mutable irq_chips: "not an immutable chip, please consider fixing!" Flag the irq_chip as IRQCHIP_IMMUTABLE, add the new helper functions, and call the appropriate gpiolib functions. Signed-off-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20250509-gpio-v1-4-639377c98288@nxp.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-15gpio: lpc18xx: Make irq_chip immutablePeng Fan
Kernel warns about mutable irq_chips: "not an immutable chip, please consider fixing!" Constify lpc18xx_gpio_pin_ic, flag the irq_chip as IRQCHIP_IMMUTABLE, add the new helper functions, and call the appropriate gpiolib functions. Signed-off-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20250509-gpio-v1-3-639377c98288@nxp.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-15gpio: grgpio: Make irq_chip immutablePeng Fan
Kernel warns about mutable irq_chips: "not an immutable chip, please consider fixing!" Constify grgpio_irq_chip, flag the irq_chip as IRQCHIP_IMMUTABLE, add the new helper functions, and call the appropriate gpiolib functions. Signed-off-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20250509-gpio-v1-2-639377c98288@nxp.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-15gpio: bcm-kona: make irq_chip immutablePeng Fan
The gpiolib is moving to make irq_chip immutable, otherwise there is warning: "not an immutable chip, please consider fixing it!" The bcm_gpio_irq_chip already has irq hooks configured correctly, bcm_kona_gpio_irq_mask/bcm_kona_gpio_irq_unmask calls gpiochip_disable_irq/ gpiochip_enable_irq, and bcm_kona_gpio_irq_reqres/irq_release_resources calls gpiochip_reqres_irq/gpiochip_relres_irq. So just need to flag it as IRQCHIP_IMMUTABLE. Signed-off-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20250509-gpio-v1-1-639377c98288@nxp.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-15gpio: TODO: add item about GPIO drivers reading struct gpio_chip::baseAhmad Fatoum
drivers/pinctrl/pinctrl-at91.c uses struct gpio_chip::base to find out which bit to set in a register: dev_dbg(npct->dev, "enable pin %u as GPIO\n", offset); mask = 1 << (offset - chip->base); This adds a non-obvious dependency on the global numberspace from the GPIO driver itself, even if all consumers use the descriptor API. More such instances may exist and will need to be fixed in the quest for removal of the global numberspace, so add a reminder about it to the TODO list. Link: https://lore.kernel.org/all/1d00c056-3d61-4c22-bedd-3bae0bf1ddc4@pengutronix.de/ Suggested-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.kernel.org/r/20250507-gpio-chip-base-readback-v1-1-ade56e38480b@pengutronix.de Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-15gpio: mxc: configure dynamic GPIO base for CONFIG_GPIO_SYSFS=nAhmad Fatoum
i.MX GPIO numbering has been deterministic since commit 7e6086d9e54a ("gpio/mxc: specify gpio base for device tree probe"), a year after device tree support was first added back in 2011. Reverting to dynamically allocated GPIO base now would break most systems making use of the sysfs API. These systems will be eventually broken by the removal of the sysfs API, but that would result in GPIO scripts not working instead of essentially toggling at random according to probe order, which would happen if we unconditionally set base to -1. Yet, the warning is annoying and has resulted in many rejected attempts to remove it over the years[1][2][3]. As the i.MX GPIO driver is device tree only, GPIO_SYSFS is the only consumer of the deterministic GPIO numbering. Let's therefore restrict the static base and the warning that comes with it to configurations with CONFIG_GPIO_SYSFS enabled. [1]: https://lore.kernel.org/all/20230226205319.1013332-1-dario.binacchi@amarulasolutions.com/ [2]: https://lore.kernel.org/all/20230506085928.933737-2-haibo.chen@nxp.com/ [3]: https://lore.kernel.org/all/20241121145515.3087855-1-catalin.popescu@leica-geosystems.com/ Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20250507-b4-imx-gpio-base-warning-v2-1-d43d09e2c6bf@pengutronix.de Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-13gpio: ml-ioh: use new GPIO 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. Link: https://lore.kernel.org/r/20250506-gpiochip-set-rv-gpio-part3-v1-12-0fbdea5a9667@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-13gpio: mc33880: use new GPIO 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. Link: https://lore.kernel.org/r/20250506-gpiochip-set-rv-gpio-part3-v1-11-0fbdea5a9667@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-13gpio: mb86s7x: use new GPIO 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. Link: https://lore.kernel.org/r/20250506-gpiochip-set-rv-gpio-part3-v1-10-0fbdea5a9667@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-13gpio: max77620: use new GPIO 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. Link: https://lore.kernel.org/r/20250506-gpiochip-set-rv-gpio-part3-v1-9-0fbdea5a9667@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-13gpio: max732x: use new GPIO 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. Link: https://lore.kernel.org/r/20250506-gpiochip-set-rv-gpio-part3-v1-8-0fbdea5a9667@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-13gpio: max730x: use new GPIO 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. Link: https://lore.kernel.org/r/20250506-gpiochip-set-rv-gpio-part3-v1-7-0fbdea5a9667@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-13gpio: max3191x: remove unused callbacksBartosz Golaszewski
This driver is input-only and as such doesn't need to define empty set() and direction_output() callbacks. Remove them. Link: https://lore.kernel.org/r/20250506-gpiochip-set-rv-gpio-part3-v1-6-0fbdea5a9667@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-13gpio: madera: use new GPIO 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. Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://lore.kernel.org/r/20250506-gpiochip-set-rv-gpio-part3-v1-5-0fbdea5a9667@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-13gpio: lpc32xx: use new GPIO 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. Link: https://lore.kernel.org/r/20250506-gpiochip-set-rv-gpio-part3-v1-4-0fbdea5a9667@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-13gpio: lpc18xx: use new GPIO 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. Link: https://lore.kernel.org/r/20250506-gpiochip-set-rv-gpio-part3-v1-3-0fbdea5a9667@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-13gpio: lp87565: use new GPIO 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. Link: https://lore.kernel.org/r/20250506-gpiochip-set-rv-gpio-part3-v1-2-0fbdea5a9667@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-13gpio: lp873x: use new GPIO 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. Link: https://lore.kernel.org/r/20250506-gpiochip-set-rv-gpio-part3-v1-1-0fbdea5a9667@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-13Merge tag 'ib-mfd-gpio-nvmem-v6.16' of ↵Bartosz Golaszewski
git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into gpio/for-next Immutable branch between MFD, GPIO and NVMEM due for the v6.16 merge window
2025-05-13gpio: virtuser: fix potential out-of-bound writeMarkus Burri
If the caller wrote more characters, count is truncated to the max available space in "simple_write_to_buffer". Check that the input size does not exceed the buffer size. Write a zero termination afterwards. Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202505091754.285hHbr2-lkp@intel.com/ Signed-off-by: Markus Burri <markus.burri@mt.com> Link: https://lore.kernel.org/r/20250509150459.115489-1-markus.burri@mt.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-13gpio: pca953x: fix IRQ storm on system wake upEmanuele Ghidoli
If an input changes state during wake-up and is used as an interrupt source, the IRQ handler reads the volatile input register to clear the interrupt mask and deassert the IRQ line. However, the IRQ handler is triggered before access to the register is granted, causing the read operation to fail. As a result, the IRQ handler enters a loop, repeatedly printing the "failed reading register" message, until `pca953x_resume()` is eventually called, which restores the driver context and enables access to registers. Fix by disabling the IRQ line before entering suspend mode, and re-enabling it after the driver context is restored in `pca953x_resume()`. An IRQ can be disabled with disable_irq() and still wake the system as long as the IRQ has wake enabled, so the wake-up functionality is preserved. Fixes: b76574300504 ("gpio: pca953x: Restore registers after suspend/resume cycle") Cc: stable@vger.kernel.org Signed-off-by: Emanuele Ghidoli <emanuele.ghidoli@toradex.com> Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20250512095441.31645-1-francesco@dolcini.it Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-05-09gpio: max77759: Add Maxim MAX77759 gpio driverAndré Draszik
The Maxim MAX77759 is a companion PMIC for USB Type-C applications and includes Battery Charger, Fuel Gauge, temperature sensors, USB Type-C Port Controller (TCPC), NVMEM, and a GPIO expander. This driver supports the GPIO functions using the platform device registered by the core MFD driver. Signed-off-by: André Draszik <andre.draszik@linaro.org> Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Acked-by: Peter Griffin <peter.griffin@linaro.org> Link: https://lore.kernel.org/r/20250509-max77759-mfd-v10-2-962ac15ee3ef@linaro.org Signed-off-by: Lee Jones <lee@kernel.org>
2025-05-05gpio: blzp1600: remove incorrect pf_match_ptr()Arnd Bergmann
The blzp1600_gpio_of_match is defined unconditionally and can always be referenced by the driver, so don't use of_match_ptr() and avoid this warning: drivers/gpio/gpio-blzp1600.c:263:34: error: 'blzp1600_gpio_of_match' defined but not used [-Werror=unused-const-variable=] 263 | static const struct of_device_id blzp1600_gpio_of_match[] = { Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20250502203721.2117186-1-arnd@kernel.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-04-30gpio: lp3943: 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. Reviewed-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20250423-gpiochip-set-rv-gpio-part2-v1-12-b22245cde81a@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2025-04-30gpio: loongson: 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. Reviewed-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20250423-gpiochip-set-rv-gpio-part2-v1-11-b22245cde81a@linaro.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
generated by cgit v1.2.3 (git 2.25.1) at 2026-07-08 07:18:17 +0000