Merge branch 'ib-nomadik-gpio' into devel

Documentation/devicetree/bindings/gpio/st,nomadik-gpio.yaml

@@ -0,0 +1,95 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/st,nomadik-gpio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Nomadik GPIO controller
+
+description:
+  The Nomadik GPIO driver handles Nomadik SoC GPIO blocks. This block has also
+  been called ST STA2X11. On the Nomadik platform, this driver is intertwined
+  with pinctrl-nomadik.
+
+maintainers:
+  - Linus Walleij <[email protected]>
+
+properties:
+  $nodename:
+    pattern: "^gpio@[0-9a-f]+$"
+
+  compatible:
+    enum:
+      - st,nomadik-gpio
+      - mobileye,eyeq5-gpio
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  "#gpio-cells":
+    const: 2
+
+  gpio-controller: true
+
+  interrupt-controller: true
+
+  "#interrupt-cells":
+    const: 2
+
+  gpio-bank:
+    description: System-wide GPIO bank index.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+  st,supports-sleepmode:
+    description: Whether the controller can sleep or not.
+    $ref: /schemas/types.yaml#/definitions/flag
+
+  clocks:
+    maxItems: 1
+
+  gpio-ranges:
+    maxItems: 1
+
+  ngpios:
+    minimum: 0
+    maximum: 32
+
+  resets:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - "#gpio-cells"
+  - gpio-controller
+  - interrupt-controller
+  - gpio-bank
+
+unevaluatedProperties: false
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: mobileye,eyeq5-gpio
+    then:
+      properties:
+        st,supports-sleepmode: false
+
+examples:
+  - |
+    gpio@8012e080 {
+        compatible = "st,nomadik-gpio";
+        reg =  <0x8012e080 0x80>;
+        interrupts = <0 120 0x4>;
+        #gpio-cells = <2>;
+        gpio-controller;
+        interrupt-controller;
+        st,supports-sleepmode;
+        gpio-bank = <1>;
+    };

MAINTAINERS

@@ -2465,6 +2465,7 @@ T:	git git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-nomadik.git
 F:	Documentation/devicetree/bindings/arm/ste-*
 F:	Documentation/devicetree/bindings/arm/ux500.yaml
 F:	Documentation/devicetree/bindings/arm/ux500/
+F:	Documentation/devicetree/bindings/gpio/st,nomadik-gpio.yaml
 F:	Documentation/devicetree/bindings/i2c/st,nomadik-i2c.yaml
 F:	arch/arm/boot/dts/st/ste-*
 F:	arch/arm/mach-nomadik/
@@ -2473,6 +2474,7 @@ F:	drivers/clk/clk-nomadik.c
 F:	drivers/clocksource/clksrc-dbx500-prcmu.c
 F:	drivers/dma/ste_dma40*
 F:	drivers/pmdomain/st/ste-ux500-pm-domain.c
+F:	drivers/gpio/gpio-nomadik.c
 F:	drivers/hwspinlock/u8500_hsem.c
 F:	drivers/i2c/busses/i2c-nomadik.c
 F:	drivers/iio/adc/ab8500-gpadc.c

drivers/gpio/Kconfig

@@ -478,6 +478,18 @@ config GPIO_MXS
 	select GPIO_GENERIC
 	select GENERIC_IRQ_CHIP
 
+config GPIO_NOMADIK
+	bool "Nomadik GPIO driver"
+	depends on ARCH_U8500 || ARCH_NOMADIK || MACH_EYEQ5 || COMPILE_TEST
+	select GPIOLIB_IRQCHIP
+	help
+	  Say yes here to support the Nomadik SoC GPIO block. This block is also
+	  used by the Mobileye EyeQ5 SoC.
+
+	  It handles up to 32 GPIOs per bank, that can all be interrupt sources.
+	  It is deeply interconnected with the associated pinctrl driver as GPIO
+	  registers handle muxing ("alternate functions") as well.
+
 config GPIO_NPCM_SGPIO
 	bool "Nuvoton SGPIO support"
 	depends on ARCH_NPCM || COMPILE_TEST

drivers/gpio/Makefile

@@ -116,6 +116,7 @@ obj-$(CONFIG_GPIO_MT7621)		+= gpio-mt7621.o
 obj-$(CONFIG_GPIO_MVEBU)		+= gpio-mvebu.o
 obj-$(CONFIG_GPIO_MXC)			+= gpio-mxc.o
 obj-$(CONFIG_GPIO_MXS)			+= gpio-mxs.o
+obj-$(CONFIG_GPIO_NOMADIK)		+= gpio-nomadik.o
 obj-$(CONFIG_GPIO_NPCM_SGPIO)		+= gpio-npcm-sgpio.o
 obj-$(CONFIG_GPIO_OCTEON)		+= gpio-octeon.o
 obj-$(CONFIG_GPIO_OMAP)			+= gpio-omap.o