// Demo overlay for the gpio-fsm driver
/dts-v1/;
/plugin/;

#include <dt-bindings/gpio/gpio-fsm.h>

#define BUTTON1 GF_IP(0)
#define BUTTON2 GF_SW(0)
#define RED   GF_OP(0) // GPIO7
#define AMBER GF_OP(1) // GPIO8
#define GREEN GF_OP(2) // GPIO25

/{
	compatible = "brcm,bcm2835";

	fragment@0 {
		target-path = "/";
		__overlay__ {
			fsm_demo: fsm-demo {
				compatible = "rpi,gpio-fsm";

				debug = <0>;
				gpio-controller;
				#gpio-cells = <2>;
				num-swgpios = <1>;
				gpio-line-names = "button2";
				input-gpios  = <&gpio 6 1>;  // BUTTON1 (active-low)
				output-gpios = <&gpio 7 0>,  // RED
					       <&gpio 8 0>,  // AMBER
					       <&gpio 25 0>; // GREEN
				shutdown-timeout-ms = <2000>;

				start {
					start_state;
					set = <RED 1>, <AMBER 0>, <GREEN 0>;
					start2 = <GF_DELAY 250>;
				};

				start2 {
					set = <RED 0>, <AMBER 1>;
					go = <GF_DELAY 250>;
				};

				go {
					set = <RED 0>, <AMBER 0>, <GREEN 1>;
					ready_wait = <BUTTON1 0>;
					shutdown1 = <GF_SHUTDOWN 0>;
				};

				ready_wait {
					// Clear the soft GPIO
					set = <BUTTON2 0>;
					ready = <GF_DELAY 1000>;
					shutdown1 = <GF_SHUTDOWN 0>;
				};

				ready {
					stopping = <BUTTON1 1>, <BUTTON2 1>;
					shutdown1 = <GF_SHUTDOWN 0>;
				};

				stopping {
					set = <GREEN 0>, <AMBER 1>;
					stopped = <GF_DELAY 1000>;
				};

				stopped {
					set = <AMBER 0>, <RED 1>;
					get_set = <GF_DELAY 3000>;
					shutdown1 = <GF_SHUTDOWN 0>;
				};

				get_set {
					set = <AMBER 1>;
					go = <GF_DELAY 1000>;
				};

				shutdown1 {
					set = <RED 0>, <AMBER 0>, <GREEN 1>;
					shutdown2 = <GF_SHUTDOWN 250>;
				};

				shutdown2 {
					set = <AMBER 1>, <GREEN 0>;
					shutdown3 = <GF_SHUTDOWN 250>;
				};

				shutdown3 {
					set = <RED 1>, <AMBER 0>;
					shutdown4 = <GF_SHUTDOWN 250>;
				};

				shutdown4 {
					shutdown_state;
					set = <RED 0>, <AMBER 0>, <GREEN 0>;
				};
			};
	       };
        };

	__overrides__ {
		fsm_debug = <&fsm_demo>,"debug:0";
	};
};