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2021-03-16gpiolib: Assign fwnode to parent's if no primary one providedAndy Shevchenko1-0/+7
In case when the properties are supplied in the secondary fwnode (for example, built-in device properties) the fwnode pointer left unassigned. This makes unable to retrieve them. Assign fwnode to parent's if no primary one provided. Fixes: 7cba1a4d5e16 ("gpiolib: generalize devprop_gpiochip_set_names() for device properties") Fixes: 2afa97e9868f ("gpiolib: Read "gpio-line-names" from a firmware node") Reported-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Tested-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-03-12gpiolib: Fix error return code in gpiolib_dev_init()Wei Yongjun1-1/+2
Fix to return a negative error code from the error handling case instead of 0, as done elsewhere in this function. Fixes: 4731210c09f5 ("gpiolib: Bind gpio_device to a driver to enable fw_devlink=on by default") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-03-08gpiolib: Read "gpio-line-names" from a firmware nodeAndy Shevchenko1-8/+4
On STM32MP1, the GPIO banks are subnodes of pin-controller@50002000, see arch/arm/boot/dts/stm32mp151.dtsi. The driver for pin-controller@50002000 is in drivers/pinctrl/stm32/pinctrl-stm32.c and iterates over all of its DT subnodes when registering each GPIO bank gpiochip. Each gpiochip has: - gpio_chip.parent = dev, where dev is the device node of the pin controller - gpio_chip.of_node = np, which is the OF node of the GPIO bank Therefore, dev_fwnode(chip->parent) != of_fwnode_handle(chip.of_node), i.e. pin-controller@50002000 != pin-controller@50002000/gpio@5000*000. The original code behaved correctly, as it extracted the "gpio-line-names" from of_fwnode_handle(chip.of_node) = pin-controller@50002000/gpio@5000*000. To achieve the same behaviour, read property from the firmware node. Fixes: 7cba1a4d5e162 ("gpiolib: generalize devprop_gpiochip_set_names() for device properties") Reported-by: Marek Vasut <marex@denx.de> Reported-by: Roman Guskov <rguskov@dh-electronics.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Tested-by: Marek Vasut <marex@denx.de> Reviewed-by: Marek Vasut <marex@denx.de> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-03-08gpio: pca953x: Set IRQ type when handle Intel Galileo Gen 2Andy Shevchenko1-55/+23
The commit 0ea683931adb ("gpio: dwapb: Convert driver to using the GPIO-lib-based IRQ-chip") indeliberately made a regression on how IRQ line from GPIO I²C expander is handled. I.e. it reveals that the quirk for Intel Galileo Gen 2 misses the part of setting IRQ type which previously was predefined by gpio-dwapb driver. Now, we have to reorganize the approach to call necessary parts, which can be done via ACPI_GPIO_QUIRK_ABSOLUTE_NUMBER quirk. Without this fix and with above mentioned change the kernel hangs on the first IRQ event with: gpio gpiochip3: Persistence not supported for GPIO 1 irq 32, desc: 62f8fb50, depth: 0, count: 0, unhandled: 0 ->handle_irq(): 41c7b0ab, handle_bad_irq+0x0/0x40 ->irq_data.chip(): e03f1e72, 0xc2539218 ->action(): 0ecc7e6f ->action->handler(): 8a3db21e, irq_default_primary_handler+0x0/0x10 IRQ_NOPROBE set unexpected IRQ trap at vector 20 Fixes: ba8c90c61847 ("gpio: pca953x: Override IRQ for one of the expanders on Galileo Gen 2") Depends-on: 0ea683931adb ("gpio: dwapb: Convert driver to using the GPIO-lib-based IRQ-chip") Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
2021-03-08gpiolib: acpi: Allow to find GpioInt() resource by name and indexAndy Shevchenko1-4/+8
Currently only search by index is supported. However, in some cases we might need to pass the quirks to the acpi_dev_gpio_irq_get(). For this, split out acpi_dev_gpio_irq_get_by() and replace acpi_dev_gpio_irq_get() by calling above with NULL for name parameter. Fixes: ba8c90c61847 ("gpio: pca953x: Override IRQ for one of the expanders on Galileo Gen 2") Depends-on: 0ea683931adb ("gpio: dwapb: Convert driver to using the GPIO-lib-based IRQ-chip") Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
2021-03-08gpiolib: acpi: Add ACPI_GPIO_QUIRK_ABSOLUTE_NUMBER quirkAndy Shevchenko1-1/+6
On some systems the ACPI tables has wrong pin number and instead of having a relative one it provides an absolute one in the global GPIO number space. Add ACPI_GPIO_QUIRK_ABSOLUTE_NUMBER quirk to cope with such cases. Fixes: ba8c90c61847 ("gpio: pca953x: Override IRQ for one of the expanders on Galileo Gen 2") Depends-on: 0ea683931adb ("gpio: dwapb: Convert driver to using the GPIO-lib-based IRQ-chip") Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
2021-03-08gpiolib: acpi: Add missing IRQF_ONESHOTYang Li1-1/+1
fixed the following coccicheck: ./drivers/gpio/gpiolib-acpi.c:176:7-27: ERROR: Threaded IRQ with no primary handler requested without IRQF_ONESHOT Make sure threaded IRQs without a primary handler are always request with IRQF_ONESHOT Reported-by: Abaci Robot <abaci@linux.alibaba.com> Signed-off-by: Yang Li <yang.lee@linux.alibaba.com> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2021-03-08gpio: fix gpio-device list corruptionJohan Hovold1-0/+4
Make sure to hold the gpio_lock when removing the gpio device from the gpio_devices list (when dropping the last reference) to avoid corrupting the list when there are concurrent accesses. Fixes: ff2b13592299 ("gpio: make the gpiochip a real device") Cc: stable@vger.kernel.org # 4.6 Reviewed-by: Saravana Kannan <saravanak@google.com> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-03-08gpio: fix NULL-deref-on-deregistration regressionJohan Hovold1-2/+1
Fix a NULL-pointer deference when deregistering the gpio character device that was introduced by the recent stub-driver hack. When the new "driver" is unbound as part of deregistration, driver core clears the driver-data pointer which is used to retrieve the struct gpio_device in its release callback. Fix this by using container_of() in the release callback as should have been done all along. Fixes: 4731210c09f5 ("gpiolib: Bind gpio_device to a driver to enable fw_devlink=on by default") Cc: Saravana Kannan <saravanak@google.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reported-by: syzbot+d27b4c8adbbff70fbfde@syzkaller.appspotmail.com Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-02-24Merge tag 'driver-core-5.12-rc1' of ↵Linus Torvalds3-7/+61
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core / debugfs update from Greg KH: "Here is the "big" driver core and debugfs update for 5.12-rc1 This set of driver core patches caused a bunch of problems in linux-next for the past few weeks, when Saravana tried to set fw_devlink=on as the default functionality. This caused a number of systems to stop booting, and lots of bugs were fixed in this area for almost all of the reported systems, but this option is not ready to be turned on just yet for the default operation based on this testing, so I've reverted that change at the very end so we don't have to worry about regressions in 5.12 We will try to turn this on for 5.13 if testing goes better over the next few months. Other than the fixes caused by the fw_devlink testing in here, there's not much more: - debugfs fixes for invalid input into debugfs_lookup() - kerneldoc cleanups - warn message if platform drivers return an error on their remove callback (a futile effort, but good to catch). All of these have been in linux-next for a while now, and the regressions have gone away with the revert of the fw_devlink change" * tag 'driver-core-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (35 commits) Revert "driver core: Set fw_devlink=on by default" of: property: fw_devlink: Ignore interrupts property for some configs debugfs: do not attempt to create a new file before the filesystem is initalized debugfs: be more robust at handling improper input in debugfs_lookup() driver core: auxiliary bus: Fix calling stage for auxiliary bus init of: irq: Fix the return value for of_irq_parse_one() stub of: irq: make a stub for of_irq_parse_one() clk: Mark fwnodes when their clock provider is added/removed PM: domains: Mark fwnodes when their powerdomain is added/removed irqdomain: Mark fwnodes when their irqdomain is added/removed driver core: fw_devlink: Handle suppliers that don't use driver core of: property: Add fw_devlink support for optional properties driver core: Add fw_devlink.strict kernel param of: property: Don't add links to absent suppliers driver core: fw_devlink: Detect supplier devices that will never be added driver core: platform: Emit a warning if a remove callback returned non-zero of: property: Fix fw_devlink handling of interrupts/interrupts-extended gpiolib: Don't probe gpio_device if it's not the primary device device.h: Remove bogus "the" in kerneldoc gpiolib: Bind gpio_device to a driver to enable fw_devlink=on by default ...
2021-02-22Merge tag 'gpio-updates-for-v5.12' of ↵Linus Torvalds20-640/+1015
git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux Pull gpio updates from Bartosz Golaszewski: "It's been a relatively calm release cycle and we're actually removing more code than we're adding. Summary: - new driver for the Toshiba Visconti platform - rework of interrupt handling in gpio-tegra - updates for GPIO selftests: we're now using the character device to perform the subsystem checks - support for a new rcar variant + some code refactoring - refactoring of gpio-ep93xx - SPDX License identifier has been updated in the uapi header so that userspace programs bundling it can become fully REUSE-compliant - improvements to pwm handling in gpio-mvebu - support for interrupt handling and power management for gpio-xilinx as well as some code refactoring - support for a new chip variant in gpio-pca953x - removal of drivers: zte xs & intel-mid and removal of leftovers from intel-msic - impovements to intel drivers pulled from Andy Shevchenko - improvements to the gpio-aggregator virtual GPIO driver - and several minor tweaks and fixes to code and documentation all over the place" * tag 'gpio-updates-for-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (71 commits) gpio: pcf857x: Fix missing first interrupt gpio: ep93xx: refactor base IRQ number gpio: ep93xx: refactor ep93xx_gpio_add_bank gpio: ep93xx: Fix typo s/hierarchial/hierarchical gpio: ep93xx: drop to_irq binding gpio: ep93xx: Fix wrong irq numbers in port F gpio: uapi: use the preferred SPDX license identifier gpio: gpio-xilinx: Add check if width exceeds 32 gpio: gpio-xilinx: Add support for suspend and resume gpio: gpio-xilinx: Add interrupt support gpio: gpio-xilinx: Reduce spinlock array to array gpio: gpio-xilinx: Simplify with dev_err_probe() gpio: msic: Drop driver from Makefile gpio: wcove: Split out to_ireg() helper and deduplicate the code gpio: wcove: Switch to use regmap_set_bits(), regmap_clear_bits() gpio: wcove: Get rid of error prone casting in IRQ handler gpio: intel-mid: Remove driver for deprecated platform gpio: msic: Remove driver for deprecated platform gpio: aggregator: Remove trailing comma in terminator entries gpio: aggregator: Use compound literal from the header ...
2021-02-22Merge tag 'mfd-next-5.12' of ↵Linus Torvalds1-21/+14
git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd Pull MFD updates from Lee Jones: "Core Frameworks: - Standardise MFD_CELL_* helpers New Drivers: - Add support for Acer Iconia Tab A500 Embedded Controller New Device Support: - Add support for ROHM BD9574MWF to BD9571MWV - Add support for Intel Alder Lake PCH-P PCI to LPSS - Add support for Intel Alder Lake PCH-S PCI to LPSS New Functionality: - Support ACPI enumeration; arizona Fix-ups: - Managed resources; bd9571mwv - DT additions/fix-ups; bd9571mwv, iqs62x, max8997, gateworks-gsc, ene-kb930 - Convert to SPDX; bd9571mw - Fix return values/error handling; sunxi - Provide SOFTDEP; arizona - Make use of DIV_ROUND_UP; mcp-sa11x0 - Use generic APIs; arizona - Add MAC address sysfs entries; intel-m10-bmc - Trivial: Coding-style fix-ups; iqs62x - Trivial: Remove superflouous code; iqs62x - Clear-up naming conventions; iqs62x Bug Fixes: - Fix 'pointer from integer' error; altera-sysmgr - Convert SGI_MFD_IOC3 from tristate to bool; Kconfig - Fix interrupt handling; gateworks-gsc - Extend required delay; iqs62x - Do not use I2C polling during calibration; iqs62x - Do no adjust clock frequency during calibration; iqs62x - Fix use-after-free; wm831x-auxad" * tag 'mfd-next-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (32 commits) mfd: wm831x-auxadc: Prevent use after free in wm831x_auxadc_read_irq() mfd: iqs62x: Do not change clock frequency during ATI mfd: iqs62x: Do not poll during ATI mfd: iqs62x: Increase interrupt handler return delay mfd: iqs62x: Rename regmap_config struct mfd: iqs62x: Remove unused bit mask mfd: iqs62x: Remove superfluous whitespace above fallthroughs mfd: intel-lpss: Add Intel Alder Lake PCH-S PCI IDs mfd: intel-m10-bmc: Expose MAC address and count mfd: Add driver for Embedded Controller found on Acer Iconia Tab A500 dt-bindings: mfd: Add ENE KB930 Embedded Controller binding dt-bindings: mfd: gateworks-gsc: Add fan-tach mode mfd: intel-lpss: Add Intel Alder Lake PCH-P PCI IDs mfd: gateworks-gsc: Fix interrupt type mfd: Standardise MFD_CELL_* helper names mfd: mcp-sa11x0: Use DIV_ROUND_UP to calculate rw_timeout mfd: max8997: Add of_compatible to Extcon and Charger mfd_cell dt-bindings: mfd: Correct the node name of the panel LED mfd: sgi-ioc3: Turn Kconfig option into a bool mfd: altera-sysmgr: Fix physical address storing more ...
2021-02-22Merge branch 'i2c/for-5.12' of ↵Linus Torvalds1-0/+4
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c updates from Wolfram Sang: - mostly driver updates. Bigger ones for mlxcpld and iproc. But most of them are all over the place. - removal of the efm32, sirf, u300, and zte zx bus drivers because of platform removal. So, we have a pleasant diffstat this time. - first set of cleanups in the I2C core as preparation to increase maximum length of SMBus transfers to 255 (as specified in the new standard). Better documentation of struct i2c_msg and its flags stand out here. - the testunit can now respond to SMBus block process calls which is the testcase when implementing the above new maximum length. * 'i2c/for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (62 commits) i2c: remove redundant error print in stm32f7_i2c_probe i2c: testunit: add support for block process calls i2c: busses: Replace spin_lock_irqsave with spin_lock in hard IRQ dt-bindings: eeprom: at24: Document ROHM BR24G01 i2c: i801: Add support for Intel Alder Lake PCH-P i2c: mv64xxx: Fix check for missing clock after adding RPM i2c: mux: mlxcpld: Add callback to notify mux creation completion i2c: mux: mlxcpld: Extend supported mux number i2c: mux: mlxcpld: Extend driver to support word address space devices i2c: mux: mlxcpld: Get rid of adapter numbers enforcement i2c: mux: mlxcpld: Prepare mux selection infrastructure for two-byte support i2c: mux: mlxcpld: Convert driver to platform driver i2c: imx: Synthesize end of transaction events without idle interrupts i2c: i2c-qcom-geni: Add shutdown callback for i2c i2c: mv64xxx: Add runtime PM support i2c: amd-mp2: Remove unused macro i2c: amd-mp2: convert to PCI logging functions i2c: mux: mlxcpld: Move header file out of x86 realm platform/x86: mlxcpld: Update module license i2c: mux: mlxcpld: Update module license ...
2021-02-22Merge tag 'platform-drivers-x86-v5.12-1' of ↵Linus Torvalds5-744/+1
git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 Pull x86 platform driver updates from Hans de Goede: "Highlights: - Microsoft Surface devices System Aggregator Module support - SW_TABLET_MODE reporting improvements - thinkpad_acpi keyboard language setting support - platform / DPTF profile settings support: - Base / userspace API parts merged from Rafael's acpi-platform branch - thinkpad_acpi and ideapad-laptop support through pdx86 - Remove support for some obsolete Intel MID platforms through merging of the shared intel-mid-removal branch - Big cleanup of the ideapad-laptop driver - Misc other fixes / new hw support / quirks" * tag 'platform-drivers-x86-v5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (99 commits) platform/x86: intel_scu_ipc: Increase virtual timeout from 3 to 5 seconds platform/surface: aggregator: Fix access of unaligned value tools/power/x86/intel-speed-select: Update version to 1.8 tools/power/x86/intel-speed-select: Add new command to get/set TRL tools/power/x86/intel-speed-select: Add new command turbo-mode Platform: OLPC: Constify static struct regulator_ops platform/surface: Add Surface Hot-Plug driver platform/x86: intel_scu_wdt: Drop mistakenly added const platform/x86: Kconfig: add missing selects for ideapad-laptop platform/x86: acer-wmi: Don't use ACPI_EXCEPTION() platform/x86: thinkpad_acpi: Replace ifdef CONFIG_ACPI_PLATFORM_PROFILE with depends on platform/x86: thinkpad_acpi: Fix 'warning: no previous prototype for' warnings platform/x86: msi-wmi: Fix variable 'status' set but not used compiler warning platform/surface: surface3-wmi: Fix variable 'status' set but not used compiler warning platform/x86: Move all dell drivers to their own subdirectory Documentation/ABI: sysfs-platform-ideapad-laptop: conservation_mode attribute Documentation/ABI: sysfs-platform-ideapad-laptop: update device attribute paths platform/x86: ideapad-laptop: add "always on USB charging" control support platform/x86: ideapad-laptop: add keyboard backlight control support platform/x86: ideapad-laptop: send notification about touchpad state change to sysfs ...
2021-02-18gpio: pcf857x: Fix missing first interruptMaxim Kiselev1-1/+1
If no n_latch value will be provided at driver probe then all pins will be used as an input: gpio->out = ~n_latch; In that case initial state for all pins is "one": gpio->status = gpio->out; So if pcf857x IRQ happens with change pin value from "zero" to "one" then we miss it, because of "one" from IRQ and "one" from initial state leaves corresponding pin unchanged: change = (gpio->status ^ status) & gpio->irq_enabled; The right solution will be to read actual state at driver probe. Cc: stable@vger.kernel.org Fixes: 6e20a0a429bd ("gpio: pcf857x: enable gpio_to_irq() support") Signed-off-by: Maxim Kiselev <bigunclemax@gmail.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-02-15gpio: ep93xx: refactor base IRQ numberNikita Shubin1-5/+7
- use predefined constants instead of plain numbers - use provided bank IRQ number instead of defined constant for port F Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Alexander Sverdlin <alexander.sverdlin@gmail.com> Signed-off-by: Nikita Shubin <nikita.shubin@maquefel.me> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-02-15gpio: ep93xx: refactor ep93xx_gpio_add_bankNikita Shubin1-5/+4
- replace plain numbers with girq->num_parents in devm_kcalloc - replace plain numbers with girq->num_parents for port F - refactor i - 1 to i + 1 to make loop more readable - combine getting IRQ's loop and setting handler's into single loop Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Alexander Sverdlin <alexander.sverdlin@gmail.com> Signed-off-by: Nikita Shubin <nikita.shubin@maquefel.me> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-02-15gpio: ep93xx: Fix typo s/hierarchial/hierarchicalNikita Shubin1-1/+1
Fix typo in comment. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Alexander Sverdlin <alexander.sverdlin@gmail.com> Signed-off-by: Nikita Shubin <nikita.shubin@maquefel.me> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-02-15gpio: ep93xx: drop to_irq bindingNikita Shubin1-6/+0
As ->to_irq is redefined in gpiochip_add_irqchip, having it defined in driver is useless, so let's drop it. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Alexander Sverdlin <alexander.sverdlin@gmail.com> Signed-off-by: Nikita Shubin <nikita.shubin@maquefel.me> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-02-15gpio: ep93xx: Fix wrong irq numbers in port FNikita Shubin1-0/+1
Port F IRQ's should be statically mapped to EP93XX_GPIO_F_IRQ_BASE. So we need to specify girq->first otherwise: "If device tree is used, then first_irq will be 0 and IRQ's get mapped dynamically on the fly" And that's not the thing we want. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Alexander Sverdlin <alexander.sverdlin@gmail.com> Signed-off-by: Nikita Shubin <nikita.shubin@maquefel.me> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-02-15gpio: gpio-xilinx: Add check if width exceeds 32Srinivas Neeli1-0/+5
Add check to see if gpio-width property does not exceed 32. If it exceeds then return -EINVAL. Signed-off-by: Srinivas Neeli <srinivas.neeli@xilinx.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-02-15gpio: gpio-xilinx: Add support for suspend and resumeSrinivas Neeli1-3/+89
Add support for suspend and resume, pm runtime suspend and resume. Added free and request calls. 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: gpio-xilinx: Add interrupt supportSrinivas Neeli2-4/+244
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: gpio-xilinx: Reduce spinlock array to arraySrinivas Neeli1-13/+12
Changed spinlock array to single. It is preparation for irq support which is shared between two channels that's why spinlock should be only one. 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: gpio-xilinx: Simplify with dev_err_probe()Srinivas Neeli1-5/+2
Common pattern of handling deferred probe can be simplified with dev_err_probe(). Less code and also it prints the error value. 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: msic: Drop driver from MakefileAndy Shevchenko1-1/+0
Driver is gone, no need to keep a Makefile entry for it. Remove. Reported-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2021-02-15gpio: wcove: Split out to_ireg() helper and deduplicate the codeAndy Shevchenko1-20/+24
There are a few places in the code where IRQ status and mask register values are being updated. Use a new exctracted helper to deduplicate the code. While at it, get rid of unnecessary divisions. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2021-02-15gpio: wcove: Switch to use regmap_set_bits(), regmap_clear_bits()Andy Shevchenko1-10/+7
the regmap_set_bits(), regmap_clear_bits() API makes code better to understand. Switch the driver to use them, Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2021-02-15gpio: wcove: Get rid of error prone casting in IRQ handlerAndy Shevchenko1-3/+3
The casting from int to long on 64-bit platform is error prone. Replace it with proper type of the variable on stack. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2021-02-15gpio: intel-mid: Remove driver for deprecated platformAndy Shevchenko4-423/+1
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 Shevchenko2-321/+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: aggregator: Remove trailing comma in terminator entriesAndy Shevchenko1-2/+2
Remove trailing comma in terminator entries to avoid potential expanding an array behind it. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-02-15gpio: aggregator: Use compound literal from the headerAndy Shevchenko1-2/+1
Instead of doing it in place, convert GPIO_LOOKUP_IDX() and GPIO_HOG() to be compund literals that's allow to use them as rvalue in assignments. Due to above conversion, use compound literal from the header in the gpio-aggregator.c. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-02-15gpio: aggregator: Replace isrange() by using get_options()Andy Shevchenko1-30/+3
We already have a nice helper called get_options() which can be used to validate the input format. Replace isrange() by using it. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-02-15gpio: merrifield: Make bias configuration available for GPIOsAndy Shevchenko1-0/+5
If we get bias set request, for example, from GpioIo() resource, we silently ignore it. Make bias configuration available for GPIOs. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2021-02-15gpio: mvebu: add pwm support for Armada 8K/7KBaruch Siach1-33/+68
Use the marvell,pwm-offset DT property to store the location of PWM signal duration registers. Since we have more than two GPIO chips per system, we can't use the alias id to differentiate between them. Use the offset value for that. Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-02-15gpio: tegra: Fix irq_set_affinityDmitry Osipenko1-1/+2
The irq_set_affinity callback should not be set if parent IRQ domain doesn't present because gpio-tegra driver callback fails in this case, causing a noisy error messages on system suspend: Disabling non-boot CPUs ... IRQ 26: no longer affine to CPU1 IRQ128: set affinity failed(-22). IRQ130: set affinity failed(-22). IRQ131: set affinity failed(-22). IRQ 27: no longer affine to CPU2 IRQ128: set affinity failed(-22). IRQ130: set affinity failed(-22). IRQ131: set affinity failed(-22). IRQ 28: no longer affine to CPU3 IRQ128: set affinity failed(-22). IRQ130: set affinity failed(-22). IRQ131: set affinity failed(-22). Entering suspend state LP1 Hence just don't specify the irq_set_affinity callback if parent PMC IRQ domain is missing. Tegra isn't capable of setting affinity per GPIO, affinity could be set only per GPIO bank, thus there is nothing to do for gpio-tegra in regards to CPU affinity without the parent IRQ domain. Tested-by: Peter Geis <pgwipeout@gmail.com> # Ouya T30 Tested-by: Matt Merhar <mattmerhar@protonmail.com> # Ouya T30 Tested-by: Dmitry Osipenko <digetx@gmail.com> # A500 T20 and Nexus7 T30 Fixes: efcdca286eef ("gpio: tegra: Convert to gpio_irq_chip") Reported-by: Matt Merhar <mattmerhar@protonmail.com> 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: tegra: Support building driver as a loadable moduleDmitry Osipenko2-7/+10
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: tegra: Clean up whitespaces in tegra_gpio_driverDmitry Osipenko1-4/+4
Clean up inconsistent whitespaces and tabs in the definition of tegra_gpio_driver to make code look better a tad. 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: tegra: Use debugfs_create_devm_seqfile()Dmitry Osipenko1-5/+3
Use resource-managed variant of debugfs_create_file(0444) to prepare code for the modularization of the driver. 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: tegra: Improve formatting of the codeDmitry Osipenko1-5/+10
Don't cross 80 chars of line length in order to keep formatting of the code consistent. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-02-15gpio: mvebu: improve handling of pwm zero on/off valuesBaruch Siach1-16/+23
Hardware appears to treat zero value as 2^32. Take advantage of this fact to support on/off values of up to UINT_MAX+1 == 2^32. Adjust both .apply and .get_state to handle zero as a special case. Rounded up division result in .get_state can't be zero, since the dividend is now larger than 0. Remove check for this case. Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Analyzed-by: Russell King <linux@armlinux.org.uk> Signed-off-by: Baruch Siach <baruch@tkos.co.il> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-02-15gpio: mvebu: don't limit pwm period/duty_cycle to UINT_MAXBaruch Siach1-6/+2
PWM on/off registers are limited to UINT_MAX. However the state period and duty_cycle fields are ns values of type u64. There is no reason to limit them to UINT_MAX. Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-02-15gpio: mvebu: make pwm .get_state closer to idempotentBaruch Siach1-2/+2
Round up the divisions in .get_state() to make applying the read out configuration idempotent in most cases as .apply rounds down. Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-02-15gpio: mvebu: improve pwm period calculation accuracyBaruch Siach1-2/+2
Change 'off' register value calculation from $off = (period - duty_cycle) * clkrate / NSEC_PER_SEC to $off = (period * clkrate / NSEC_PER_SEC) - $on That is, divide the full period value to reduce rounding error. Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Baruch Siach <baruch@tkos.co.il> 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: wcove: convert comma to semicolonZheng Yongjun1-1/+1
Replace a comma between expression statements by a semicolon. Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-02-15gpio: vx855: convert comma to semicolonZheng Yongjun1-1/+1
Replace a comma between expression statements by a semicolon. Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-02-15gpio: tegra186: convert comma to semicolonZheng Yongjun1-1/+1
Replace a comma between expression statements by a semicolon. Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2021-02-15gpio: max77620: convert comma to semicolonZheng Yongjun1-1/+1
Replace a comma between expression statements by a semicolon. Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-26 03:12:17 +0000