tests: lib: devicetree: api: Add tests for IRQ_INTC_* macros

Extend api test suite to cover the new devicetree macros. This
includes extending the devicetree overlay with two new bindings:

- GPIO device which is also an interrupt controller
- interrupt holder using interrupts-extended to point to both
  existing interrupt controller test_intc, and the newly added
  GPIO device

Signed-off-by: Bjarki Arge Andreasen <bjarki@arge-andreasen.me>

dts/bindings/test/vnd,gpio-intc-device.yaml

@@ -0,0 +1,29 @@
+# Copyright (c) 2023 Bjarki Arge Andreasen
+# SPDX-License-Identifier: Apache-2.0
+
+description: Test GPIO with INTC node
+
+compatible: "vnd,gpio-intc-device"
+
+include:
+  - gpio-controller.yaml
+  - interrupt-controller.yaml
+  - base.yaml
+
+properties:
+  reg:
+    required: true
+
+  "#gpio-cells":
+    const: 2
+
+  "#interrupt-cells":
+    const: 2
+
+gpio-cells:
+  - pin
+  - flags
+
+interrupt-cells:
+  - pin
+  - flags

dts/bindings/test/vnd,interrupt-holder-extended.yaml

@@ -0,0 +1,15 @@
+# Copyright (c) 2023 Bjarki Arge Andreasen
+# SPDX-License-Identifier: Apache-2.0
+
+description: Test Interrupt Controller with extended interrupts
+
+compatible: "vnd,interrupt-holder-extended"
+
+include: [base.yaml]
+
+properties:
+  interrupts-extended:
+    required: true
+
+  interrupt-names:
+    required: true

tests/lib/devicetree/api/app.overlay

@@ -203,6 +203,16 @@
 			status = "okay";
 		};
 
+		test_gpio_4: gpio@1234abcd {
+			compatible = "vnd,gpio-intc-device";
+			reg = <0x1234abcd 0x500>;
+			gpio-controller;
+			#gpio-cells = <0x2>;
+			interrupt-controller;
+			#interrupt-cells = <0x2>;
+			status = "okay";
+		};
+
 		test_i2c: i2c@11112222 {
 			#address-cells = < 1 >;
 			#size-cells = < 0 >;
@@ -431,6 +441,15 @@
 			interrupt-names = "err", "stat", "done";
 		};
 
+		/* there should only be one of these */
+		test_irq_extended: interrupt-holder-extended {
+			compatible = "vnd,interrupt-holder-extended";
+			status = "okay";
+			interrupts-extended = <&test_intc 70 7>,
+					      <&test_gpio_4 30 3>;
+			interrupt-names = "int1", "int2";
+		};
+
 		test_fixed_clk: test-fixed-clock {
 			compatible = "fixed-clock";
 			clock-frequency = <25000000>;

tests/lib/devicetree/api/src/main.c

@@ -21,12 +21,14 @@
 #define TEST_ARRAYS	DT_NODELABEL(test_arrays)
 #define TEST_PH	DT_NODELABEL(test_phandles)
 #define TEST_IRQ	DT_NODELABEL(test_irq)
+#define TEST_IRQ_EXT	DT_NODELABEL(test_irq_extended)
 #define TEST_TEMP	DT_NODELABEL(test_temp_sensor)
 #define TEST_REG	DT_NODELABEL(test_reg)
 #define TEST_VENDOR	DT_NODELABEL(test_vendor)
 #define TEST_MODEL	DT_NODELABEL(test_vendor)
 #define TEST_ENUM_0	DT_NODELABEL(test_enum_0)
 #define TEST_64BIT	DT_NODELABEL(test_reg_64)
+#define TEST_INTC	DT_NODELABEL(test_intc)
 
 #define TEST_I2C DT_NODELABEL(test_i2c)
 #define TEST_I2C_DEV DT_PATH(test, i2c_11112222, test_i2c_dev_10)
@@ -44,6 +46,7 @@
 
 #define TEST_GPIO_1 DT_NODELABEL(test_gpio_1)
 #define TEST_GPIO_2 DT_NODELABEL(test_gpio_2)
+#define TEST_GPIO_4 DT_NODELABEL(test_gpio_4)
 
 #define TEST_GPIO_HOG_1 DT_PATH(test, gpio_deadbeef, test_gpio_hog_1)
 #define TEST_GPIO_HOG_2 DT_PATH(test, gpio_deadbeef, test_gpio_hog_2)
@@ -3149,4 +3152,31 @@ ZTEST(devicetree_api, test_reset)
 	zassert_equal(DT_INST_RESET_ID(0), 10, "");
 }
 
+#undef DT_DRV_COMPAT
+#define DT_DRV_COMPAT vnd_interrupt_holder_extended
+ZTEST(devicetree_api, test_interrupt_controller)
+{
+	/* DT_IRQ_INTC_BY_IDX */
+	zassert_true(DT_SAME_NODE(DT_IRQ_INTC_BY_IDX(TEST_IRQ_EXT, 0), TEST_INTC), "");
+	zassert_true(DT_SAME_NODE(DT_IRQ_INTC_BY_IDX(TEST_IRQ_EXT, 1), TEST_GPIO_4), "");
+
+	/* DT_IRQ_INTC_BY_NAME */
+	zassert_true(DT_SAME_NODE(DT_IRQ_INTC_BY_NAME(TEST_IRQ_EXT, int1), TEST_INTC), "");
+	zassert_true(DT_SAME_NODE(DT_IRQ_INTC_BY_NAME(TEST_IRQ_EXT, int2), TEST_GPIO_4), "");
+
+	/* DT_IRQ_INTC */
+	zassert_true(DT_SAME_NODE(DT_IRQ_INTC(TEST_IRQ_EXT), TEST_INTC), "");
+
+	/* DT_INST_IRQ_INTC_BY_IDX */
+	zassert_true(DT_SAME_NODE(DT_INST_IRQ_INTC_BY_IDX(0, 0), TEST_INTC), "");
+	zassert_true(DT_SAME_NODE(DT_INST_IRQ_INTC_BY_IDX(0, 1), TEST_GPIO_4), "");
+
+	/* DT_INST_IRQ_INTC_BY_NAME */
+	zassert_true(DT_SAME_NODE(DT_INST_IRQ_INTC_BY_NAME(0, int1), TEST_INTC), "");
+	zassert_true(DT_SAME_NODE(DT_INST_IRQ_INTC_BY_NAME(0, int2), TEST_GPIO_4), "");
+
+	/* DT_INST_IRQ_INTC */
+	zassert_true(DT_SAME_NODE(DT_INST_IRQ_INTC(0), TEST_INTC), "");
+}
+
 ZTEST_SUITE(devicetree_api, NULL, NULL, NULL, NULL, NULL);