This patchset adds pinctrl and gpio support for Actions Semi S900 SoC. Pinctrl and gpio subsystems share the common set of register range but implemented as individual drivers for making it less complex. Pinmux functions are only accessible for pin groups while pinconf parameters are available for both pin groups and individual pins. gpio-line-names has been added for the Bubblegum-96 board matching the 96Boards CE specification v1.0. Both pinctrl and gpio drivers are verified using the Bubblegum-96 board. This patchset depends on the clock driver which is still under review: https://lkml.org/lkml/2018/2/9/831 There is also S500 pinctrl and gpio driver developed by Andreas Farber independently to this patchset. https://github.com/afaerber/linux/commits/bg96-next If this patchseries seems to be good enough to add base OWL pinctrl and gpio support. Then, we may decide on adding S500 support on top of this later by reusing the pinctrl definitions from Andreas. Thanks, Mani Changes in v7: * Added spinlock to gpio driver per Andy's suggestion * Introduced helper functions, owl_read_field and owl_write_field in pinctrl driver as suggested by Andy * Fixed comma usage for structs Changes in v6: * Changed owl_gpio_set_reg to owl_gpio_update_reg in gpio driver * Reused owl_gpio_update_reg in owl_gpio_set in gpio driver * Removed ngpio property from DT for nodes with 32 gpios * Fixed size values in DT for gpio nodes * Added Reviewed-by tags from Linus for adding gpio-line-names in DT Changes in v5: * Removed alias for gpio nodes * Removed duplicate address from gpio nodes and modified the driver accordingly * Used ngpios property for specifying number of gpios per bank * Used generic gpio node name in DT and binding * Modified pinctrl driver to save space * Dropped pinctrl bindings patch since it got applied * Added Reviewed-by tags from Linus for DT and platform Kconfig changes Changes in v4: * Incorporated Andy's review for pinctrl driver * Used _relaxed functions for pinctrl driver * Added Andy's Reviewed-by tag for gpio driver * Added (back) Rob's Reviewed-by tag for pinctrl bindings Changes in v3: * Simplified owl_gpio_set_reg() with _relaxed functions * Added interrupt controller properties to gpio node bindings as suggested by Rob * Minor code cleanups Changes in v2: * Implemented each GPIO bank as its own gpio-controller * Added gpio-ranges property * Modified pin group to follow pad names instead of register names * Incorporated review comments from Andy * Incorporated review comments from Andreas * Fixed the MODULE_LICENSE with respect to SPDX tag * Added Reviewed by tag from Rob for pinctrl binding Manivannan Sadhasivam (9): arm64: dts: actions: Add pinctrl node for S900 arm64: actions: Enable PINCTRL in platforms Kconfig pinctrl: actions: Add Actions S900 pinctrl driver dt-bindings: gpio: Add gpio nodes for Actions S900 SoC arm64: dts: actions: Add S900 gpio nodes arm64: dts: actions: Add gpio line names to Bubblegum-96 board gpio: Add gpio driver for Actions OWL S900 SoC MAINTAINERS: Add reviewer for ACTIONS platforms MAINTAINERS: Add Actions Semi S900 pinctrl and gpio entries .../devicetree/bindings/gpio/actions,owl-gpio.txt | 87 + MAINTAINERS | 5 + arch/arm64/Kconfig.platforms | 1 + arch/arm64/boot/dts/actions/s900-bubblegum-96.dts | 195 ++ arch/arm64/boot/dts/actions/s900.dtsi | 57 + drivers/gpio/Kconfig | 8 + drivers/gpio/Makefile | 1 + drivers/gpio/gpio-owl.c | 184 ++ drivers/pinctrl/Kconfig | 1 + drivers/pinctrl/Makefile | 1 + drivers/pinctrl/actions/Kconfig | 12 + drivers/pinctrl/actions/Makefile | 2 + drivers/pinctrl/actions/pinctrl-owl.c | 585 ++++++ drivers/pinctrl/actions/pinctrl-owl.h | 142 ++ drivers/pinctrl/actions/pinctrl-s900.c | 1861 ++++++++++++++++++++ 15 files changed, 3142 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/actions,owl-gpio.txt create mode 100644 drivers/gpio/gpio-owl.c create mode 100644 drivers/pinctrl/actions/Kconfig create mode 100644 drivers/pinctrl/actions/Makefile create mode 100644 drivers/pinctrl/actions/pinctrl-owl.c create mode 100644 drivers/pinctrl/actions/pinctrl-owl.h create mode 100644 drivers/pinctrl/actions/pinctrl-s900.c -- 2.14.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
