summaryrefslogtreecommitdiffstats
path: root/drivers/gpio/Kconfig
AgeCommit message (Collapse)AuthorFilesLines
2021-11-16gpio: rockchip: needs GENERIC_IRQ_CHIP to fix build errorsRandy Dunlap1-0/+1
gpio-rockchip uses interfaces that are provided by the Kconfig symbol GENERIC_IRQ_CHIP, so the driver should select that symbol in order to prevent build errors. Fixes these build errors (and more): aarch64-linux-ld: drivers/gpio/gpio-rockchip.o: in function `rockchip_irq_disable': gpio-rockchip.c:(.text+0x454): undefined reference to `irq_gc_mask_set_bit' aarch64-linux-ld: drivers/gpio/gpio-rockchip.o: in function `rockchip_irq_enable': gpio-rockchip.c:(.text+0x478): undefined reference to `irq_gc_mask_clr_bit' aarch64-linux-ld: drivers/gpio/gpio-rockchip.o: in function `rockchip_interrupts_register': gpio-rockchip.c:(.text+0x518): undefined reference to `irq_generic_chip_ops' aarch64-linux-ld: gpio-rockchip.c:(.text+0x594): undefined reference to `__irq_alloc_domain_generic_chips' aarch64-linux-ld: gpio-rockchip.c:(.text+0x5cc): undefined reference to `irq_get_domain_generic_chip' aarch64-linux-ld: gpio-rockchip.c:(.text+0x5e0): undefined reference to `irq_gc_ack_set_bit' aarch64-linux-ld: gpio-rockchip.c:(.text+0x604): undefined reference to `irq_gc_set_wake' Fixes: 936ee2675eee ("gpio/rockchip: add driver for rockchip gpio") Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2021-11-04gpio: virtio: Add IRQ supportViresh Kumar1-0/+1
This patch adds IRQ support for the virtio GPIO driver. Note that this uses the irq_bus_lock/unlock() callbacks, since those operations over virtio may sleep. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2021-10-30gpio: clean up Kconfig fileRandy Dunlap1-58/+58
Fix multiple problems in punctuation, capitalization, grammar, wording, and typos in the GPIO Kconfig file. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Bartosz Golaszewski <brgl@bgdev.pl> Cc: linux-gpio@vger.kernel.org Cc: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Geert Uytterhoeven <geert+renesas@glider.be> Cc: Sean Young <sean@mess.org> Cc: Bamvor Jian Zhang <bamv2005@gmail.com> Cc: Michael Walle <michael@walle.cc> Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2021-09-23gpio: modepin: Add driver support for modepin GPIO controllerPiyush Mehta1-0/+12
This patch adds driver support for the zynqmp modepin GPIO controller. GPIO modepin driver set and get the value and status of the PS_MODE pin, based on device-tree pin configuration. These four mode pins are configurable as input/output. The mode pin has a control register, which have lower four-bits [0:3] are configurable as input/output, next four-bits can be used for reading the data as input[4:7], and next setting the output pin state output[8:11]. By default value of mode pin register is 0. Signed-off-by: Piyush Mehta <piyush.mehta@xilinx.com> Acked-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
2021-08-23Merge branch 'ib-rockchip' of ↵Bartosz Golaszewski1-0/+8
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl into gpio/for-next
2021-08-23gpio: remove the obsolete MX35 3DS BOARD MC9S08DZ60 GPIO functionsLukas Bulwahn1-6/+0
Commit e1324ece2af4 ("ARM: imx: Remove i.MX35 board files") removes the config MACH_MX35_3DS in arch/arm/mach-imx/Kconfig. Hence, since then, the MX35 3DS BOARD MC9S08DZ60 GPIO functions are dead code as its config GPIO_MC9S08DZ60 depends on the config MACH_MX35_3DS. Luckily, ./scripts/checkkconfigsymbols.py warns on non-existing configs: MACH_MX35_3DS Referencing files: drivers/gpio/Kconfig Remove the obsolete MX35 3DS BOARD MC9S08DZ60 GPIO functions. Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Fabio Estevam <festevam@gmail.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-08-23gpio: Add virtio-gpio driverViresh Kumar1-0/+9
This patch adds a new driver for Virtio based GPIO devices. This allows a guest VM running Linux to access GPIO lines provided by the host. It supports all basic operations, except interrupts for the GPIO lines. Based on the initial work posted by: "Enrico Weigelt, metux IT consult" <lkml@metux.net>. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-08-17gpio/rockchip: add driver for rockchip gpioJianqun Xu1-0/+8
This patch add support for rockchip gpio controller, which is supported in pinctrl driver in the past. With this patch, the pinctrl-rockchip driver will drop gpio related codes and populate platform driver to gpio-rockchip. Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com> Link: https://lore.kernel.org/r/20210816012053.1119069-1-jay.xu@rock-chips.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2021-07-05Merge tag 'gpio-updates-for-v5.14' of ↵Linus Torvalds1-0/+12
git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux Pull gpio updates from Bartosz Golaszewski: "One new driver, support for new models in existing ones, dt-bindings conversions for several modules and improvements all over the place. Summary: - new driver for the IDT 79RC3243x GPIO controller - device tree bindings coversion to YAML for the following drivers: gpio-rk3328-grf, gpio-omap, gpio-davinci, gpio-zynq, gpio-stp, gpio-pcf857x - cleanup of probe functions in many drivers from Alexandru Ardelean, mostly dropping unnecessary calls to platform_set_drvdata() and removing error messages where none are needed (handled by the subsystem already) - several improvements to the core gpiolib and the sysfs interface code from Andy Shevchenko - conversion of the gpio-xilinx driver to using the bitmap API + improvements of suspend/resume handling + minor tweaks - convert the gpio-stmpe to using devres helpers exclusively in probe for improved robustness - updates for the generic gpio-regmap driver - updates for the gpio-dwapb driver - support for a new model in gpio-pca953x - cleanups in gpio-tegra186, gpio-104-idio-16, gpio-mxs & gpio-xgene - slight code refactoring of the gpio-zynq driver - documentation fixes from Mauro Carvalho Chehab - a bunch of minor tweaks and improvements all over the place" * tag 'gpio-updates-for-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (57 commits) docs: driver-api: gpio: using-gpio.rst: avoid using ReST :doc:`foo` markup dt-bindings: gpio: pcf857x: Convert to json-schema gpio: mxs: Prefer unsigned int to bare use of unsigned dt-bindings: gpio: stp: convert to json-schema dt-bindings: gpio: zynq: convert bindings to YAML dt-bindings: gpio: gpio-davinci: Convert to json-schema gpio: pca953x: Add support for the On Semi pca9655 gpio: gpio-xilinx: update on suspend and resume calls gpio: zynq: Check return value of irq_get_irq_data gpio: zynq: Check return value of pm_runtime_get_sync gpio: zynq: use module_platform_driver to simplify the code gpio: idt3243x: Fix return value check in idt_gpio_probe() MAINTAINERS: update ti,omap-gpio.yaml reference dt-bindings: gpio: Add devicetree binding for IDT 79RC32434 GPIO controller gpio: Add support for IDT 79RC3243x GPIO controller gpio: regmap: move drvdata to config data gpio-dwapb: Drop unused headers and sort the rest gpio: gpio-regmap: Use devm_add_action_or_reset() gpio: dwapb: Switch to use fwnode_irq_get() gpio: dwapb: Drop redundant check in dwapb_irq_set_type() ...
2021-06-30Merge tag 'platform-drivers-x86-v5.14-1' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 Pull x86 platform driver updates from Hans de Goede: "Highlights: - New think-lmi driver adding support for changing Lenovo Thinkpad BIOS settings from within Linux using the standard firmware- attributes class sysfs API - MS Surface aggregator-cdev now also supports forwarding events to user-space (for debugging / new driver development purposes only) - New intel_skl_int3472 driver this provides the necessary glue to translate ACPI table information to GPIOs, regulators, etc. for camera sensors on Intel devices with IPU3 attached MIPI cameras - A whole bunch of other fixes + device-specific quirk additions - New devm_work_autocancel() devm-helpers.h function" * tag 'platform-drivers-x86-v5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (83 commits) platform/x86: dell-wmi-sysman: Change user experience when Admin/System Password is modified platform/x86: intel_skl_int3472: Uninitialized variable in skl_int3472_handle_gpio_resources() platform/x86: think-lmi: Move kfree(setting->possible_values) to tlmi_attr_setting_release() platform/x86: think-lmi: Split current_value to reflect only the value platform/x86: think-lmi: Fix issues with duplicate attributes platform/x86: think-lmi: Return EINVAL when kbdlang gets set to a 0 length string platform/x86: intel_cht_int33fe: Move to its own subfolder platform/x86: intel_skl_int3472: Move to intel/ subfolder platform/x86: intel_skl_int3472: Provide skl_int3472_unregister_clock() platform/x86: intel_skl_int3472: Provide skl_int3472_unregister_regulator() platform/x86: intel_skl_int3472: Use ACPI GPIO resource directly platform/x86: intel_skl_int3472: Fix dependencies (drop CLKDEV_LOOKUP) platform/x86: intel_skl_int3472: Free ACPI device resources after use platform/x86: Remove "default n" entries platform/x86: ISST: Use numa node id for cpu pci dev mapping platform/x86: ISST: Optimize CPU to PCI device mapping tools/power/x86/intel-speed-select: v1.10 release tools/power/x86/intel-speed-select: Fix uncore memory frequency display extcon: extcon-max8997: Simplify driver using devm extcon: extcon-max8997: Fix IRQ freeing at error path ...
2021-06-25gpio: AMD8111 and TQMX86 require HAS_IOPORT_MAPJohannes Berg1-0/+2
Both of these drivers use ioport_map(), so they need to depend on HAS_IOPORT_MAP. Otherwise, they cannot be built even with COMPILE_TEST on architectures without an ioport implementation, such as ARCH=um. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-06-17mfd: tps68470: Remove tps68470 MFD driverDaniel Scally1-1/+1
This driver only covered one scenario in which ACPI devices with _HID INT3472 are found, and its functionality has been taken over by the intel-skl-int3472 module, so remove it. Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> Acked-by: Lee Jones <lee.jones@linaro.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Daniel Scally <djrscally@gmail.com> Link: https://lore.kernel.org/r/20210603224007.120560-7-djrscally@gmail.com Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2021-06-07gpio: Add support for IDT 79RC3243x GPIO controllerThomas Bogendoerfer1-0/+12
IDT 79RC3243x SoCs integrated a gpio controller, which handles up to 32 gpios. All gpios could be used as an interrupt source. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-05-05Merge tag 'gpio-updates-for-v5.13-v2' of ↵Linus Torvalds1-6/+18
git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux Pull gpio updates from Bartosz Golaszewski: - new driver for the Realtek Otto GPIO controller - ACPI support for gpio-mpc8xxx - edge event support for gpio-sch (+ Kconfig fixes) - Kconfig improvements in gpio-ich - fixes to older issues in gpio-mockup - ACPI quirk for ignoring EC wakeups on Dell Venue 10 Pro 5055 - improve the GPIO aggregator code by using more generic interfaces instead of reimplementing them in the driver - convert the DT bindings for gpio-74x164 to yaml - documentation improvements - a slew of other minor fixes and improvements to GPIO drivers * tag 'gpio-updates-for-v5.13-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (34 commits) dt-bindings: gpio: add YAML description for rockchip,gpio-bank gpio: mxs: remove useless function dt-bindings: gpio: fairchild,74hc595: Convert to json-schema gpio: it87: remove unused code gpio: 104-dio-48e: Fix coding style issues gpio: mpc8xxx: Add ACPI support gpio: ich: Switch to be dependent on LPC_ICH gpio: sch: Drop MFD_CORE selection gpio: sch: depends on LPC_SCH gpiolib: acpi: Add quirk to ignore EC wakeups on Dell Venue 10 Pro 5055 gpio: sch: Hook into ACPI GPE handler to catch GPIO edge events gpio: sch: Add edge event support gpio: aggregator: Replace custom get_arg() with a generic next_arg() lib/cmdline: Export next_arg() for being used in modules gpio: omap: Use device_get_match_data() helper gpio: Add Realtek Otto GPIO support dt-bindings: gpio: Binding for Realtek Otto GPIO docs: kernel-parameters: Add gpio_mockup_named_lines docs: kernel-parameters: Move gpio-mockup for alphabetic order lib: bitmap: provide devm_bitmap_alloc() and devm_bitmap_zalloc() ...
2021-05-05gpio: ich: Switch to be dependent on LPC_ICHAndy Shevchenko1-3/+2
Driver is neither dependent to PCI nor using MFD_CORE. Replace those dependency and selection by dependency on LPC_ICH. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2021-05-05gpio: sch: Drop MFD_CORE selectionAndy Shevchenko1-1/+0
Since we are depended on LPC_SCH, which selects MFD_CORE, we don't need to do it ourselves. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2021-05-05gpio: sch: depends on LPC_SCHRandy Dunlap1-1/+1
Since LPC_SCH provides GPIO functionality, GPIO_SCH should depend on LPC_SCH to prevent kconfig warning and build errors: WARNING: unmet direct dependencies detected for LPC_SCH Depends on [n]: HAS_IOMEM [=y] && PCI [=n] Selected by [y]: - GPIO_SCH [=y] && GPIOLIB [=y] && X86 [=y] && (X86 [=y] || COMPILE_TEST [=n]) && ACPI [=y] and ../drivers/mfd/lpc_sch.c:204:1: warning: data definition has no type or storage class module_pci_driver(lpc_sch_driver); ^~~~~~~~~~~~~~~~~ ../drivers/mfd/lpc_sch.c:204:1: error: type defaults to ‘int’ in declaration of ‘module_pci_driver’ [-Werror=implicit-int] ../drivers/mfd/lpc_sch.c:204:1: warning: parameter names (without types) in function declaration ../drivers/mfd/lpc_sch.c:197:26: warning: ‘lpc_sch_driver’ defined but not used [-Wunused-variable] static struct pci_driver lpc_sch_driver = { ^~~~~~~~~~~~~~ Fixes: 6c46215d6b62 ("gpio: sch: Hook into ACPI GPE handler to catch GPIO edge events") Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-gpio@vger.kernel.org Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com> Cc: Denis Turischev <denis@compulab.co.il> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2021-05-05gpio: sch: Hook into ACPI GPE handler to catch GPIO edge eventsAndy Shevchenko1-1/+1
Neither the ACPI description on Intel Minnowboard (v1) platform provides the required information to establish a generic handling nor the hardware capable of doing it. According to the data sheet the hardware can generate SCI events. Therefore, we need to hook from the driver into GPE handler of the ACPI subsystem in order to catch and report GPIO-related events. Validated on the Inlel Minnowboard (v1) platform and Intel Galileo Gen 2. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
2021-05-05gpio: sch: Add edge event supportJan Kiszka1-0/+1
Add the required infrastructure to enable and report edge events of the pins to the GPIO core. The actual hook-up of the event interrupt will happen separately. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Co-developed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
2021-05-05gpio: Add Realtek Otto GPIO supportSander Vanheule1-0/+13
Realtek MIPS SoCs (platform name Otto) have GPIO controllers with up to 64 GPIOs, divided over two banks. Each bank has a set of registers for 32 GPIOs, with support for edge-triggered interrupts. Each GPIO bank consists of four 8-bit GPIO ports (ABCD and EFGH). Most registers pack one bit per GPIO, except for the IMR register, which packs two bits per GPIO (AB-CD). Although the byte order is currently assumed to have port A..D at offset 0x0..0x3, this has been observed to be reversed on other, Lexra-based, SoCs (e.g. RTL8196E/97D/97F). Interrupt support is disabled for the fallback devicetree-compatible 'realtek,otto-gpio'. This allows for quick support of GPIO banks in which the byte order would be unknown. In this case, the port ordering in the IMR registers may not match the reversed order in the other registers (DCBA, and BA-DC or DC-BA). Signed-off-by: Sander Vanheule <sander@svanheule.net> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-04-14gpio: Support ROHM BD71815 GPOsMatti Vaittinen1-0/+10
Support GPO(s) found from ROHM BD71815 power management IC. The IC has two GPO pins but only one is properly documented in the data-sheet. The driver exposes by default only the documented GPO. The second GPO is connected to E5 pin and is marked as GND in the data-sheet. Control for this undocumented pin can be enabled using a special DT property. This driver is derived from work by Peter Yang <yanglsh@embest-tech.com> although not so much of the original is left. Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> Acked-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-02-15gpio: gpio-xilinx: Add interrupt supportSrinivas Neeli1-0/+2
Adds interrupt support to the Xilinx GPIO driver so that rising and falling edge line events can be supported. Since interrupt support is an optional feature in the Xilinx IP, the driver continues to support devices which have no interrupt provided. Depends on OF_GPIO framework for of_xlate function to translate gpiospec to the GPIO number and flags. Signed-off-by: Robert Hancock <hancock@sedsystems.ca> Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com> Signed-off-by: Srinivas Neeli <srinivas.neeli@xilinx.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-02-15gpio: intel-mid: Remove driver for deprecated platformAndy Shevchenko1-7/+0
Intel Moorestown and Medfield are quite old Intel Atom based 32-bit platforms, which were in limited use in some Android phones, tablets and consumer electronics more than eight years ago. There are no bugs or problems ever reported outside from Intel for breaking any of that platforms for years. It seems no real users exists who run more or less fresh kernel on it. The commit 05f4434bc130 ("ASoC: Intel: remove mfld_machine") also in align with this theory. Due to above and to reduce a burden of supporting outdated drivers we remove the support of outdated platforms completely. Moreover this code duplicates gpio-pxa since the IP has been derived from XScale implementation. If anybody wants to resurrect this it has to be part of gpio-pxa.c. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
2021-02-15gpio: msic: Remove driver for deprecated platformAndy Shevchenko1-7/+0
Intel Moorestown and Medfield are quite old Intel Atom based 32-bit platforms, which were in limited use in some Android phones, tablets and consumer electronics more than eight years ago. There are no bugs or problems ever reported outside from Intel for breaking any of that platforms for years. It seems no real users exists who run more or less fresh kernel on it. The commit 05f4434bc130 ("ASoC: Intel: remove mfld_machine") also in align with this theory. Due to above and to reduce a burden of supporting outdated drivers we remove the support of outdated platforms completely. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
2021-02-15gpio: tegra: Support building driver as a loadable moduleDmitry Osipenko1-1/+1
Support building driver as a loadable kernel module. This allows to reduce size of a kernel zImage, which is important for some devices since size of kernel partition may be limited and since some bootloader variants have known problems in regards to the initrd placement if kernel image is too big. $ lsmod Module Size Used by gpio_tegra 16384 27 Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-02-15gpio: mockup: tweak the Kconfig help textBartosz Golaszewski1-2/+1
gpio-mockup doesn't require SYSFS to be selected so drop that bit from the Kconfig text. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
2021-02-15gpio: remove zte zx driverArnd Bergmann1-7/+0
The zte zx platform is getting removed, so this driver is no longer needed. Cc: Jun Nie <jun.nie@linaro.org> Cc: Shawn Guo <shawnguo@kernel.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-02-15gpio: visconti: Add Toshiba Visconti GPIO supportNobuhiro Iwamatsu1-0/+10
Add the GPIO driver for Toshiba Visconti ARM SoCs. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp> Reviewed-by: Punit Agrawal <punit1.agrawal@toshiba.co.jp> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-02-15gpio: Kconfig: Update help description for GPIO_RCAR configLad Prabhakar1-2/+2
The gpio-rcar driver also supports RZ/G SoC's, update the description to reflect this. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-02-15gpio: fix spelling mistake in Kconfig "supprot" -> "support"Colin Ian King1-1/+1
There is a spelling mistake in the Kconfig help text. Fix it. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-02-10gpio: mxs: GPIO_MXS should not default to y unconditionallyGeert Uytterhoeven1-1/+2
Merely enabling CONFIG_COMPILE_TEST should not enable additional code. To fix this, restrict the automatic enabling of GPIO_MXS to ARCH_MXS, and ask the user in case of compile-testing. Fixes: 6876ca311bfca5d7 ("gpio: mxs: add COMPILE_TEST support for GPIO_MXS") Cc: <stable@vger.kernel.org> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-01-19gpio: tegra: Add missing dependenciesThierry Reding1-0/+2
Commit efcdca286eef ("gpio: tegra: Convert to gpio_irq_chip") moved the Tegra GPIO driver to the generic GPIO IRQ chip infrastructure and made the IRQ domain hierarchical, so the driver needs to pull in the support infrastructure via the GPIOLIB_IRQCHIP and IRQ_DOMAIN_HIERARCHY Kconfig options. Fixes: efcdca286eef ("gpio: tegra: Convert to gpio_irq_chip") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-01-19gpio: sifive: select IRQ_DOMAIN_HIERARCHY rather than depend on itRandy Dunlap1-1/+2
This is the only driver in the kernel source tree that depends on IRQ_DOMAIN_HIERARCHY instead of selecting it. Since it is not a visible Kconfig symbol, depending on it (expecting a user to set/enable it) doesn't make much sense, so change it to select instead of "depends on". Fixes: 96868dce644d ("gpio/sifive: Add GPIO driver for SiFive SoCs") Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com> Cc: linux-gpio@vger.kernel.org Cc: Thierry Reding <treding@nvidia.com> Cc: Greentime Hu <greentime.hu@sifive.com> Cc: Yash Shah <yash.shah@sifive.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2020-12-16gpio: hisi: Do not require ACPI for COMPILE_TESTAndy Shevchenko1-1/+1
Make it clear that ACPI needs to be present only to get driver functional. It is not required for compilation. Fixes: 356b01a986a5 ("gpio: gpio-hisi: Add HiSilicon GPIO support") Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20201214165524.43843-1-andriy.shevchenko@linux.intel.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2020-12-14gpio: gpio-hisi: Add HiSilicon GPIO supportLuo Jiaxing1-0/+11
This GPIO driver is for HiSilicon's ARM SoC. HiSilicon's GPIO controller support double-edge interrupt and multi-core concurrent access. ACPI table example for this GPIO controller: Device (GPO0) { Name (_HID, "HISI0184") Device (PRTA) { Name (_ADR, Zero) Name (_UID, Zero) Name (_DSD, Package (0x01) { Package (0x02) { "ngpios", 0x20 } }) } } Signed-off-by: Luo Jiaxing <luojiaxing@huawei.com> Link: https://lore.kernel.org/r/1607934255-52544-2-git-send-email-luojiaxing@huawei.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2020-12-09Merge tag 'gpio-updates-for-v5.11' of ↵Linus Walleij1-0/+5
git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into devel gpio updates for v5.11-rc1 - several refactoring patches of the core gpiolib code - add support for NXP PCAL9554B/C to gpio-pca953x - allow probing mockup devices from device tree - refactoring and improvements to gpio-rcar - improvements to locking in gpio-tegra - code shrink in gpiolib devres - get the irq offset from device tree in gpio-sifive - major refactoring of gpio-exar - convert gpio-mvebu pwm access to regmap - create a new submenu for virtual GPIO drivers - fix clang fall-through warnings treewide - minor driver refactoring and tweaks sprinkled all over
2020-12-08gpio: put virtual gpio device into their own submenuEnrico Weigelt, metux IT consult1-0/+4
Since we already have a few virtual GPIO drivers, and more to come, this category deserves its own submenu. Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2020-12-05gpio: msc313: MStar MSC313 GPIO driverDaniel Palmer1-0/+11
This adds a driver that supports the GPIO block found in MStar/SigmaStar ARMv7 SoCs. The controller seems to have enough register for 128 lines but where they are wired up differs between chips and no currently known chip uses anywhere near 128 lines so there needs to be some per-chip data to collect together what lines actually have physical pins attached and map the right names to them. The core peripherals seem to use the same lines on the currently known chips but the lines used for the sensor interface, lcd controller etc pins seem to be totally different between the infinity and mercury chips The code tries to collect all of the re-usable names, offsets etc together so that it's easy to build the extra per-chip data for other chips in the future. So far this only supports the MSC313 and MSC313E chips. Support for the SSC8336N (mercury5) is trivial to add once all of the lines have been mapped out. Signed-off-by: Daniel Palmer <daniel@0x0f.com> Link: https://lore.kernel.org/r/20201129110803.2461700-4-daniel@0x0f.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2020-12-04gpio: sysfs: Enforce character deviceLinus Walleij1-1/+2
If users select sysfs support they get the character device as well so that end-users cannot complain that they "only have sysfs on my system". They should have the character device at all times. If someone is in so dire need of stripping out the character device while still enabling the sysfs ABI they can very well patch the kernel. Also only show this obsolete option to expert users. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20201110142724.14760-1-linus.walleij@linaro.org
2020-11-25gpio: exar: switch to using regmapBartosz Golaszewski1-0/+1
We can simplify the code in gpio-exar by using regmap. This allows us to drop the mutex (regmap provides its own locking) and we can also reuse regmap's bit operations instead of implementing our own update function. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2020-10-14Merge tag 'mfd-next-5.10' of ↵Linus Torvalds1-0/+12
git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd Pull MFD updates from Lee Jones: "New Drivers: - Add support for initialising shared (between children) Regmaps - Add support for Kontron SL28CPLD - Add support for ENE KB3930 Embedded Controller - Add support for Intel FPGA PAC MAX 10 BMC New Device Support: - Add support for Power to Ricoh RN5T618 - Add support for UART to Intel Lakefield - Add support for LP87524_Q1 to Texas Instruments LP87565 New Functionality: - Device Tree; ene-kb3930, sl28cpld, syscon, lp87565, lp87524-q1 - Use new helper dev_err_probe(); madera-core, stmfx, wcd934x - Use new GPIOD API; dm355evm_msp - Add wake-up capability; sprd-sc27xx-spi - Add ACPI support; kempld-core Fix-ups: - Trivial (spelling/whitespace); Kconfig, ab8500 - Fix for unused variables; khadas-mcu, kempld-core - Remove unused header file(s); mt6360-core - Use correct IRQ flags in docs; act8945a, gateworks-gsc, rohm,bd70528-pmic - Add COMPILE_TEST support; asic3, tmio_core - Add dependency on I2C; SL28CPLD Bug Fixes: - Fix memory leak(s); sm501 - Do not free regmap_config's 'name' until exit; syscon" * tag 'mfd-next-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (34 commits) mfd: kempld-core: Fix unused variable 'kempld_acpi_table' when !ACPI mfd: sl28cpld: Depend on I2C mfd: asic3: Build if COMPILE_TEST=y dt-bindings: mfd: Correct interrupt flags in examples mfd: Add ACPI support to Kontron PLD driver mfd: intel-m10-bmc: Add Intel MAX 10 BMC chip support for Intel FPGA PAC mfd: lp87565: Add LP87524-Q1 variant dt-bindings: mfd: Add LP87524-Q1 dt-bindings: mfd: lp87565: Convert to yaml mfd: mt6360: Remove unused include <linux/version.h> mfd: sm501: Fix leaks in probe() mfd: syscon: Don't free allocated name for regmap_config dt-bindings: mfd: syscon: Document Exynos3 and Exynos5433 compatibles dt-bindings: mfd: syscon: Merge Samsung Exynos Sysreg bindings dt-bindings: mfd: ab8500: Remove weird Unicode characters mfd: sprd: Add wakeup capability for PMIC IRQ mfd: intel-lpss: Add device IDs for UART ports for Lakefield mfd: dm355evm_msp: Convert LEDs to GPIO descriptor table mfd: wcd934x: Simplify with dev_err_probe() mfd: stmfx: Simplify with dev_err_probe() ...
2020-09-30gpiolib: add build option for CDEV v1 ABIKent Gibson1-0/+12
Add a build option to allow the removal of the CDEV v1 ABI. Suggested-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Kent Gibson <warthog618@gmail.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2020-09-30gpiolib: make cdev a build optionKent Gibson1-2/+15
Make the gpiolib-cdev module a build option. This allows the CDEV interface to be removed from the kernel to reduce kernel size in applications where is it not required, and provides the parent for other CDEV interface specific build options to follow. Suggested-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Kent Gibson <warthog618@gmail.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2020-09-29gpio: mxc: Support module buildAnson Huang1-1/+1
Change config to tristate, add module device table, module author, description and license to support module build for i.MX GPIO driver. As this is a SoC GPIO module, it provides common functions for most of the peripheral devices, such as GPIO pins control, secondary interrupt controller for GPIO pins IRQ etc., without GPIO driver, most of the peripheral devices will NOT work properly, so GPIO module is similar with clock, pinctrl driver that should be loaded ONCE and never unloaded. Since MXC GPIO driver needs to have init function to register syscore ops once, here still use subsys_initcall(), NOT module_platform_driver(). Signed-off-by: Anson Huang <Anson.Huang@nxp.com> Link: https://lore.kernel.org/r/1600320829-1453-1-git-send-email-Anson.Huang@nxp.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2020-09-17gpio: Add support for the sl28cpld GPIO controllerMichael Walle1-0/+12
Add support for the GPIO controller of the sl28 board management controller. This driver is part of a multi-function device. A controller has 8 lines. There are three different flavors: full-featured GPIO with interrupt support, input-only and output-only. Signed-off-by: Michael Walle <michael@walle.cc> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2020-08-27gpio: dwapb: Convert driver to using the GPIO-lib-based IRQ-chipSerge Semin1-1/+1
GPIO-lib provides a ready-to-use interface to initialize an IRQ-chip on top of a GPIO chip. It's better from maintainability and readability point of view to use one instead of supporting a hand-written Generic IRQ-chip-based implementation. Moreover the new implementation won't cause much functional overhead but will provide a cleaner driver code. All of that makes the DW APB GPIO driver conversion pretty much justified especially seeing a tendency of the other GPIO drivers getting converted too. Here is what we do in the framework of this commit to convert the driver to using the GPIO-lib-based IRQ-chip interface: 1) IRQ ack, mask and unmask callbacks are locally defined instead of using the Generic IRQ-chip ones. 2) An irq_chip structure instance is embedded into the dwapb_gpio private data. Note we can't have a static instance of that structure since GPIO-lib will add some hooks into it by calling gpiochip_set_irq_hooks(). A warning about that would have been printed by the GPIO-lib code if we used a single irq_chip structure instance for multiple DW APB GPIO controllers. 3) Initialize the gpio_irq_chip structure embedded into the gpio_chip descriptor. By default there is no IRQ enabled so any event raised will be handled by the handle_bad_irq() IRQ flow handler. If DW APB GPIO IP-core is synthesized to have non-shared reference IRQ-lines, then as before the hierarchical and cascaded cases are distinguished by checking how many parental IRQs are defined. (Note irq_set_chained_handler_and_data() won't initialize IRQs, which descriptors couldn't be found.) If DW APB GPIO IP is used on a platform with shared IRQ line, then we simply won't let the GPIO-lib to initialize the parental IRQs, but will handle them locally in the driver. 4) Discard linear IRQ-domain and Generic IRQ-chip initialization, since GPIO-lib IRQ-chip interface will create a new domain and accept a standard IRQ-chip structure pointer based on the setting we provided in the gpio_irq_chip structure. 5) Manually select a proper IRQ flow handler directly in the irq_set_type() callback by calling irq_set_handler_locked() method, since an ordinary (not Generic) irq_chip descriptor is now utilized. Note this shalln't give any regression 6) Alter CONFIG_GPIO_DWAPB kernel config to select CONFIG_GPIOLIB_IRQCHIP instead of CONFIG_GENERIC_IRQ_CHIP. Note neither 4) nor 5) shall cause a regression of commit 6a2f4b7dadd5 ("gpio: dwapb: use a second irq chip"), since the later isn't properly used here anyway. Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20200730152808.2955-6-Sergey.Semin@baikalelectronics.ru Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2020-07-16gpio: pca9570: add GPO driver for PCA9570Sungbo Eo1-0/+8
NXP PCA9570 is a 4-bit I2C GPO expander without interrupt functionality. Its ports are controlled only by a data byte without register address. Signed-off-by: Sungbo Eo <mans0n@gorani.run> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Datasheet: https://www.nxp.com/docs/en/data-sheet/PCA9570.pdf Link: https://lore.kernel.org/r/20200709134829.216393-1-mans0n@gorani.run Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2020-06-24gpio: Drop superfluous dependencies on GPIOLIBGeert Uytterhoeven1-2/+2
All config options for GPIO drivers are inside a big "if GPIOLIB ... endif" block, so there is no reason for individual config options to have expicit dependencies on GPIOLIB. Hence remove them. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2020-06-14treewide: replace '---help---' in Kconfig files with 'help'Masahiro Yamada1-1/+1
Since commit 84af7a6194e4 ("checkpatch: kconfig: prefer 'help' over '---help---'"), the number of '---help---' has been gradually decreasing, but there are still more than 2400 instances. This commit finishes the conversion. While I touched the lines, I also fixed the indentation. There are a variety of indentation styles found. a) 4 spaces + '---help---' b) 7 spaces + '---help---' c) 8 spaces + '---help---' d) 1 space + 1 tab + '---help---' e) 1 tab + '---help---' (correct indentation) f) 1 tab + 1 space + '---help---' g) 1 tab + 2 spaces + '---help---' In order to convert all of them to 1 tab + 'help', I ran the following commend: $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/' Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-06-03gpio: add a reusable generic gpio_chip using regmapMichael Walle1-0/+4
There are quite a lot simple GPIO controller which are using regmap to access the hardware. This driver tries to be a base to unify existing code into one place. This won't cover everything but it should be a good starting point. It does not implement its own irq_chip because there is already a generic one for regmap based devices. Instead, the irq_chip will be instantiated in the parent driver and its irq domain will be associate to this driver. For now it consists of the usual registers, like set (and an optional clear) data register, an input register and direction registers. Out-of-the-box, it supports consecutive register mappings and mappings where the registers have gaps between them with a linear mapping between GPIO offset and bit position. For weirder mappings the user can register its own .xlate(). Signed-off-by: Michael Walle <michael@walle.cc> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20200528145845.31436-3-michael@walle.cc Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-04 13:16:41 +0000