ARM: at91/gpio: add irqdomain and DT support

Add "legacy" type of irqdomain to preserve old-style numbering and allow smooth transition for both DT and non-DT cases. Original idea and code by Jean-Christophe Plagniol-Villard. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
git-mirror · Mar 1, 2012 · 21f8187 · 21f8187
1 parent 4340cde
commit 21f8187
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diff --git a/Documentation/devicetree/bindings/gpio/gpio_atmel.txt b/Documentation/devicetree/bindings/gpio/gpio_atmel.txt
@@ -0,0 +1,20 @@
+* Atmel GPIO controller (PIO)
+
+Required properties:
+- compatible: "atmel,at91rm9200-gpio"
+- reg: Should contain GPIO controller registers location and length
+- interrupts: Should be the port interrupt shared by all the pins.
+- #gpio-cells: Should be two.  The first cell is the pin number and
+  the second cell is used to specify optional parameters (currently
+  unused).
+- gpio-controller: Marks the device node as a GPIO controller.
+
+Example:
+	pioA: gpio@fffff200 {
+		compatible = "atmel,at91rm9200-gpio";
+		reg = <0xfffff200 0x100>;
+		interrupts = <2 4>;
+		#gpio-cells = <2>;
+		gpio-controller;
+	};
+
diff --git a/arch/arm/boot/dts/at91sam9g20.dtsi b/arch/arm/boot/dts/at91sam9g20.dtsi
@@ -23,6 +23,9 @@
 		serial4 = &usart3;
 		serial5 = &usart4;
 		serial6 = &usart5;
+		gpio0 = &pioA;
+		gpio1 = &pioB;
+		gpio2 = &pioC;
 	};
 	cpus {
 		cpu@0 {
@@ -54,6 +57,33 @@
 				reg = <0xfffff000 0x200>;
 			};
 
+			pioA: gpio@fffff400 {
+				compatible = "atmel,at91rm9200-gpio";
+				reg = <0xfffff400 0x100>;
+				interrupts = <2 4>;
+				#gpio-cells = <2>;
+				gpio-controller;
+				interrupt-controller;
+			};
+
+			pioB: gpio@fffff600 {
+				compatible = "atmel,at91rm9200-gpio";
+				reg = <0xfffff600 0x100>;
+				interrupts = <3 4>;
+				#gpio-cells = <2>;
+				gpio-controller;
+				interrupt-controller;
+			};
+
+			pioC: gpio@fffff800 {
+				compatible = "atmel,at91rm9200-gpio";
+				reg = <0xfffff800 0x100>;
+				interrupts = <4 4>;
+				#gpio-cells = <2>;
+				gpio-controller;
+				interrupt-controller;
+			};
+
 			dbgu: serial@fffff200 {
 				compatible = "atmel,at91sam9260-usart";
 				reg = <0xfffff200 0x200>;

diff --git a/arch/arm/boot/dts/at91sam9g45.dtsi b/arch/arm/boot/dts/at91sam9g45.dtsi
@@ -22,6 +22,11 @@
 		serial2 = &usart1;
 		serial3 = &usart2;
 		serial4 = &usart3;
+		gpio0 = &pioA;
+		gpio1 = &pioB;
+		gpio2 = &pioC;
+		gpio3 = &pioD;
+		gpio4 = &pioE;
 	};
 	cpus {
 		cpu@0 {
@@ -59,6 +64,51 @@
 				interrupts = <21 4>;
 			};
 
+			pioA: gpio@fffff200 {
+				compatible = "atmel,at91rm9200-gpio";
+				reg = <0xfffff200 0x100>;
+				interrupts = <2 4>;
+				#gpio-cells = <2>;
+				gpio-controller;
+				interrupt-controller;
+			};
+
+			pioB: gpio@fffff400 {
+				compatible = "atmel,at91rm9200-gpio";
+				reg = <0xfffff400 0x100>;
+				interrupts = <3 4>;
+				#gpio-cells = <2>;
+				gpio-controller;
+				interrupt-controller;
+			};
+
+			pioC: gpio@fffff600 {
+				compatible = "atmel,at91rm9200-gpio";
+				reg = <0xfffff600 0x100>;
+				interrupts = <4 4>;
+				#gpio-cells = <2>;
+				gpio-controller;
+				interrupt-controller;
+			};
+
+			pioD: gpio@fffff800 {
+				compatible = "atmel,at91rm9200-gpio";
+				reg = <0xfffff800 0x100>;
+				interrupts = <5 4>;
+				#gpio-cells = <2>;
+				gpio-controller;
+				interrupt-controller;
+			};
+
+			pioE: gpio@fffffa00 {
+				compatible = "atmel,at91rm9200-gpio";
+				reg = <0xfffffa00 0x100>;
+				interrupts = <5 4>;
+				#gpio-cells = <2>;
+				gpio-controller;
+				interrupt-controller;
+			};
+
 			dbgu: serial@ffffee00 {
 				compatible = "atmel,at91sam9260-usart";
 				reg = <0xffffee00 0x200>;

diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi
@@ -94,6 +94,7 @@
 				interrupts = <2 4>;
 				#gpio-cells = <2>;
 				gpio-controller;
+				interrupt-controller;
 			};
 
 			pioB: gpio@fffff600 {
@@ -102,6 +103,7 @@
 				interrupts = <2 4>;
 				#gpio-cells = <2>;
 				gpio-controller;
+				interrupt-controller;
 			};
 
 			pioC: gpio@fffff800 {
@@ -110,6 +112,7 @@
 				interrupts = <3 4>;
 				#gpio-cells = <2>;
 				gpio-controller;
+				interrupt-controller;
 			};
 
 			pioD: gpio@fffffa00 {
@@ -118,6 +121,7 @@
 				interrupts = <3 4>;
 				#gpio-cells = <2>;
 				gpio-controller;
+				interrupt-controller;
 			};
 
 			dbgu: serial@fffff200 {