Merge branch 'bcm-nsp' of ../linux-pinctrl into devel

Documentation/devicetree/bindings/pinctrl/brcm,nsp-gpio.txt

@@ -0,0 +1,80 @@
+Broadcom Northstar plus (NSP) GPIO/PINCONF Controller
+
+Required properties:
+- compatible:
+    Must be "brcm,nsp-gpio-a"
+
+- reg:
+    Should contain the register physical address and length for each of
+    GPIO base, IO control registers
+
+- #gpio-cells:
+    Must be two. The first cell is the GPIO pin number (within the
+    controller's pin space) and the second cell is used for the following:
+    bit[0]: polarity (0 for active high and 1 for active low)
+
+- gpio-controller:
+    Specifies that the node is a GPIO controller
+
+- ngpios:
+    Number of gpios supported (58x25 supports 32 and 58x23 supports 24)
+
+Optional properties:
+- interrupts:
+    Interrupt ID
+
+- interrupt-controller:
+    Specifies that the node is an interrupt controller
+
+- gpio-ranges:
+    Specifies the mapping between gpio controller and pin-controllers pins.
+    This requires 4 fields in cells defined as -
+    1. Phandle of pin-controller.
+    2. GPIO base pin offset.
+    3  Pin-control base pin offset.
+    4. number of gpio pins which are linearly mapped from pin base.
+
+Supported generic PINCONF properties in child nodes:
+- pins:
+    The list of pins (within the controller's own pin space) that properties
+    in the node apply to. Pin names are "gpio-<pin>"
+
+- bias-disable:
+    Disable pin bias
+
+- bias-pull-up:
+    Enable internal pull up resistor
+
+- bias-pull-down:
+    Enable internal pull down resistor
+
+- drive-strength:
+    Valid drive strength values include 2, 4, 6, 8, 10, 12, 14, 16 (mA)
+
+Example:
+
+	gpioa: gpio@18000020 {
+		compatible = "brcm,nsp-gpio-a";
+		reg = <0x18000020 0x100>,
+		      <0x1803f1c4 0x1c>;
+		#gpio-cells = <2>;
+		gpio-controller;
+		ngpios = <32>;
+		gpio-ranges = <&pinctrl 0 0 31>;
+		interrupt-controller;
+		interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
+
+		/* Hog a few default settings */
+		pinctrl-names = "default";
+		pinctrl-0 = <&led>;
+		led: led {
+			pins = "gpio-1";
+			bias-pull-up;
+		};
+
+		pwr: pwr {
+			gpio-hog;
+			gpios = <3 1>;
+			output-high;
+		};
+	};

drivers/pinctrl/bcm/Kconfig

@@ -54,3 +54,20 @@ config PINCTRL_CYGNUS_MUX
 	  The Broadcom Cygnus IOMUX driver supports group based IOMUX
 	  configuration, with the exception that certain individual pins
 	  can be overrided to GPIO function
+
+config PINCTRL_NSP_GPIO
+	bool "Broadcom NSP GPIO (with PINCONF) driver"
+	depends on OF_GPIO && (ARCH_BCM_NSP || COMPILE_TEST)
+	select GPIOLIB_IRQCHIP
+	select PINCONF
+	select GENERIC_PINCONF
+	default ARCH_BCM_NSP
+	help
+	  Say yes here to enable the Broadcom NSP GPIO driver.
+
+	  The Broadcom Northstar Plus SoC ChipcommonA GPIO controller is
+	  supported by this driver.
+
+	  The ChipcommonA GPIO controller support basic PINCONF functions such
+	  as bias pull up, pull down, and drive strength configurations, when
+	  these pins are muxed to GPIO.

drivers/pinctrl/bcm/Makefile

@@ -4,3 +4,4 @@ obj-$(CONFIG_PINCTRL_BCM281XX)		+= pinctrl-bcm281xx.o
 obj-$(CONFIG_PINCTRL_BCM2835)		+= pinctrl-bcm2835.o
 obj-$(CONFIG_PINCTRL_CYGNUS_GPIO)	+= pinctrl-cygnus-gpio.o
 obj-$(CONFIG_PINCTRL_CYGNUS_MUX)	+= pinctrl-cygnus-mux.o
+obj-$(CONFIG_PINCTRL_NSP_GPIO)		+= pinctrl-nsp-gpio.o