AT91 PIO4 controller is a combined gpio-controller, pin-mux and pin-config module.
This patch is to add the pinctrl driver, and rework the atmel-pio4 gpio driver to support driver model and device tree.
Changes in v3: - Add bind callback to support the pinctl device regarding as a child of atmel_pio4 device. - Add clock support. - Rework due to the pinctrl device is regarded as atmel_pio4 device's child.
Changes in v2: - remove meaningless comment. - add else path for argument of pinconf. - add inline attribute for atmel_pio4_bank_base(). - add handle if the pinmux entries is greater maximum value. - add detailed example to show how to configure pinctrl for device. - remove interrupt and gpio property description. - add reviewed-by tag. - integrate the gpio rework patch into this patch series. - add the new patch to move the PIO4 definitions to head file and rephrase them. - add the new patch to add #ifndef before CONFIG_ATMEL_PIO4 in configs/sama5d2_xplained.h
Wenyou Yang (5): gpio: atmel_pio4: Move PIO4 definitions to head file gpio: atmel_pio4: Rework to support DM & DT pinctrl: at91-pio4: Add pinctrl driver atmel: Bring in at91 pio4 device tree file and bindings configs: sama5d2_xplained: Add #ifndef before CONFIG_ATMEL_PIO4
arch/arm/dts/sama5d2-pinfunc.h | 880 +++++++++++++++++++++ arch/arm/mach-at91/include/mach/atmel_pio4.h | 35 + .../pinctrl/atmel,at91-pio4-pinctrl.txt | 66 ++ drivers/gpio/Kconfig | 2 +- drivers/gpio/atmel_pio4.c | 204 +++-- drivers/pinctrl/Kconfig | 7 + drivers/pinctrl/Makefile | 1 + drivers/pinctrl/pinctrl-at91-pio4.c | 187 +++++ include/configs/sama5d2_xplained.h | 2 + 9 files changed, 1314 insertions(+), 70 deletions(-) create mode 100644 arch/arm/dts/sama5d2-pinfunc.h create mode 100644 doc/device-tree-bindings/pinctrl/atmel,at91-pio4-pinctrl.txt create mode 100644 drivers/pinctrl/pinctrl-at91-pio4.c