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2021-06-07gpio: starfive-jh7100: Add StarFive JH7100 GPIO driverHuan Feng1-0/+8
This SoC is used on the BeagleV Starlight JH7100 board [1]. [1] https://github.com/beagleboard/beaglev-starlight Signed-off-by: Emil Renner Berthing <kernel@esmil.dk> Signed-off-by: Drew Fustini <drew@beagleboard.org>
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>
2020-12-06gpio: 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>
2020-10-15Merge 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>
2020-06-13treewide: 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>
2020-05-27Merge tag 'gpio-updates-for-v5.8-part2' of ↵Linus Walleij1-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into devel gpio: updates for v5.8 - part 2 - fix the initialization ordering in gpio-max730x - make gpio-pxa buildable for compile testing - make gpio-pca953x buildable as a module
2020-05-25gpio: pca935x: Allow IRQ support for driver built as a moduleAndy Shevchenko1-1/+1
Perhaps by some historical reasons the IRQ support has been allowed only for built-in driver. However, there is nothing prevents us to build it as module an use as IRQ chip. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2020-05-25gpio: pxa: Add COMPILE_TEST supportTiezhu Yang1-1/+1
Add COMPILE_TEST support to the PXA GPIO driver for better compile testing coverage. Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2020-05-18Merge branch 'ib-gpio-aggregator' into develLinus Walleij1-0/+12
2020-05-18gpio: Add GPIO AggregatorGeert Uytterhoeven1-0/+12
GPIO controllers are exported to userspace using /dev/gpiochip* character devices. Access control to these devices is provided by standard UNIX file system permissions, on an all-or-nothing basis: either a GPIO controller is accessible for a user, or it is not. Currently no mechanism exists to control access to individual GPIOs. Hence add a GPIO driver to aggregate existing GPIOs, and expose them as a new gpiochip. This supports the following use cases: - Aggregating GPIOs using Sysfs This is useful for implementing access control, and assigning a set of GPIOs to a specific user or virtual machine. - Generic GPIO Driver This is useful for industrial control, where it can provide userspace access to a simple GPIO-operated device described in DT, cfr. e.g. spidev for SPI-operated devices. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Tested-by: Eugeniu Rosca <erosca@de.adit-jv.com> Reviewed-by: Eugeniu Rosca <erosca@de.adit-jv.com> Link: https://lore.kernel.org/r/20200511145257.22970-5-geert+renesas@glider.be Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2020-05-18gpio: xgene-sb: Allow driver to be built with COMPILE_TESTAndy Shevchenko1-1/+1
Allow driver to be built with COMPILE_TEST for better test coverage. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20200512182721.55127-2-andriy.shevchenko@linux.intel.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2020-05-18gpio: xgene-sb: Drop redundant OF_GPIO dependencyAndy Shevchenko1-1/+1
There is nothing in the driver requires OF_GPIO. Moreover, driver supports ACPI and OF_GPIO may be a quite overhead on such configurations. Drop dependency for good and replace of_gpio.h to of.h since we have one function to be defined from there. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20200512182721.55127-1-andriy.shevchenko@linux.intel.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2020-04-14gpio: pl061: Support building as moduleRob Herring1-1/+1
Enable building the PL061 GPIO driver as a module. This does change the initcall level when built-in. This shouldn't be a problem as any user should support deferred probe by now. A scan of DT based platforms at least didn't reveal any users that would be a problem. Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com> Cc: linux-gpio@vger.kernel.org Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2020-03-25gpio: mxs: add COMPILE_TEST support for GPIO_MXSAnson Huang1-1/+1
Add COMPILE_TEST support to GPIO_MXS driver for better compile testing coverage. Signed-off-by: Anson Huang <Anson.Huang@nxp.com> Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2020-03-25gpio: mxc: Add COMPILE_TEST support for GPIO_MXCAnson Huang1-1/+1
Add COMPILE_TEST support to GPIO_MXC driver for better compile testing coverage. Signed-off-by: Anson Huang <Anson.Huang@nxp.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2020-03-09gpio: add driver for Mellanox BlueField 2 GPIO controllerAsmaa Mnebhi1-0/+7
This patch adds support for the GPIO controller used by Mellanox BlueField 2 SOCs. Signed-off-by: Asmaa Mnebhi <Asmaa@mellanox.com> Link: https://lore.kernel.org/r/1680de9eb6d2b8855228dde9a2dd065f0dcbe1fb.1583182325.git.Asmaa@mellanox.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2020-02-03Merge tag 'mfd-next-5.6' 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 ROHM BD71828 PMICs and GPIOs - Add support for Qualcomm Aqstic Audio Codecs WCD9340 and WCD9341 New Device Support: - Add support for BD71828 to BD70528 RTC driver - Add support for Intel's Jasper Lake to LPSS PCI New Functionality: - Add support for Power Key to ROHM BD71828 - Add support for Clocks to ROHM BD71828 - Add support for GPIOs to Dialog DA9062 - Add support for USB PD Notify to ChromiumOS EC - Allow callers to specify args when requesting regmap lookup; syscon Fix-ups: - Improve error handling and sanity checking; atmel-hlcdc, dln2 - Device Tree support/documentation; bd71828, da9062, xylon,logicvc, ab8500, max14577, atmel-usart - Match devices using platform IDs; bd7xxxx - Refactor BD718x7 regulator component; bd718x7-regulator - Use standard interfaces/helpers; syscon, sm501 - Trivial (whitespace, spelling, etc); ab8500-core, Kconfig - Remove unused code; db8500-prcmu, tqmx86 - Wait until boot has finished before accessing registers; madera-core - Provide missing register value defaults; cs47l15-tables - Allow more time for hardware to reset; madera-core Bug Fixes: - Fix erroneous register values; rohm-bd70528 - Fix register volatility; axp20x, rn5t618 - Fix Kconfig dependencies; MFD_MAX77650 - Fix incorrect compatible string; da9062-core - Fix syscon_regmap_lookup_by_phandle_args() stub; syscon" * tag 'mfd-next-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (41 commits) mfd: syscon: Fix syscon_regmap_lookup_by_phandle_args() dummy mfd: wcd934x: Add support to wcd9340/wcd9341 codec mfd: syscon: Add arguments support for syscon reference mfd: rn5t618: Mark ADC control register volatile dt-bindings: atmel-usart: Add microchip,sam9x60-{usart, dbgu} dt-bindings: atmel-usart: Remove wildcard mfd: cros_ec: Add cros-usbpd-notify subdevice mfd: da9062: Fix watchdog compatible string mfd: madera: Allow more time for hardware reset mfd: cs47l15: Add missing register default mfd: madera: Wait for boot done before accessing any other registers mfd: Kconfig: Rename Samsung to lowercase mfd: tqmx86: remove set but not used variable 'i2c_ien' mfd: dbx500-prcmu: Drop DSI pll clock functions mfd: dbx500-prcmu: Drop set_display_clocks() mfd: max77650: Select REGMAP_IRQ in Kconfig mfd: axp20x: Mark AXP20X_VBUS_IPSOUT_MGMT as volatile mfd: ab8500: Fix ab8500-clk typo mfd: intel-lpss: Add Intel Jasper Lake PCI IDs dt-bindings: mfd: max14577: Add reference to max14040_battery.txt descriptions ...
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-15 01:36:26 +0300