drivers: intc: Add initial intc headers

Add intc headers for creating direct IRQ macros

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

include/zephyr/drivers/intc/direct_irq_handler.h

@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2023 Bjarki Arge Andreasen
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef ZEPHYR_INCLUDE_DRIVERS_INTC_DIRECT_IRQ_HANDLER_H_
+#define ZEPHYR_INCLUDE_DRIVERS_INTC_DIRECT_IRQ_HANDLER_H_
+
+#include <zephyr/drivers/intc.h>
+
+#define INTC_DIRECT_IRQ_HANDLER_FLAG_PM   BIT(0)
+#define INTC_DIRECT_IRQ_HANDLER_FLAG_SWAP BIT(1)
+
+/**
+ * brief Get the interrupt controller's architecture
+ *
+ * @param node_id Interrupt controller's devicetree node identifier
+ *
+ * Expands to ARCH_<arch>
+ */
+#define INTC_DT_ARCH(node_id) \
+	DT_STRING_UPPER_TOKEN_BY_IDX(node_id, compatible, 0)
+
+/**
+ * @brief Expands to interrupt controller's arch devicetree namespace
+ *
+ * @param node_id Interrupt controller's devicetree node identifier
+ * @param name Name to namespace
+ *
+ * Expands to INTC_DT_<arch>_<name>
+ */
+#define INTC_DT_ARCH_NAMESPACE(node_id, name) \
+	UTIL_CAT(UTIL_CAT(UTIL_CAT(INTC_DT_, INTC_DT_ARCH(node_id)), _), name)
+
+/**
+ * @brief Expands to interrupt controller's
+ *
+ * @param node_id Interrupt controller's devicetree node identifier
+ * @param name Name to namespace
+ *
+ * Expands to INTC_DT_<arch>_<name>
+ */
+#define INTC_DT_DIRECT_IRQ_HANDLER_NAME(node_id) \
+	INTC_DT_ARCH_NAMESPACE(node_id, DIRECT_IRQ_HANDLER_DEFINE)
+
+/**
+ * @brief Define direct interrupt request handler by node identifier
+ *
+ * @param node_id Interrupt generating device's node identifier
+ */
+#define INTC_DT_DIRECT_IRQ_HANDLER_DEFINE(node_id)					\
+	INTC_DT_DIRECT_IRQ_HANDLER_NAME(DT_IRQ_INTC(node_id))(				\
+		INTC_DT_IRQ_HANDLER_NAME(						\
+			DT_IRQ_INTC(node_id),						\
+			DT_IRQ(node_id, irq)						\
+		)									\
+	)
+
+/**
+ * @brief Define direct interrupt request handler by node identifier and idx
+ *
+ * @param node_id Interrupt generating device's node identifier
+ * @param idx Index of the IRQ within interrupt generating device
+ *
+ * Expands to INTC_DT_<arch>_IRQ_HANDLER_DEFINE(node_id, irq)
+ */
+#define INTC_DT_DIRECT_IRQ_HANDLER_DEFINE_BY_IDX(node_id, idx)				\
+	INTC_DT_DIRECT_IRQ_HANDLER_NAME(DT_IRQ_INTC_BY_IDX(node_id, idx))(		\
+		INTC_DT_IRQ_HANDLER_NAME(						\
+			DT_IRQ_INTC_BY_IDX(node_id, idx),				\
+			DT_IRQ_BY_IDX(node_id, idx, irq)				\
+		)									\
+	)
+
+/**
+ * @brief Define direct interrupt request handler by node identifier and idx
+ *
+ * @param node_id Interrupt generating device's node identifier
+ * @param idx Index of the IRQ within interrupt generating device
+ *
+ * Expands to INTC_DT_<arch>_IRQ_HANDLER_DEFINE(node_id, irq)
+ */
+#define INTC_DT_DIRECT_IRQ_HANDLER_DEFINE_BY_NAME(node_id, name)			\
+	INTC_DT_DIRECT_IRQ_HANDLER_NAME(DT_IRQ_INTC_BY_NAME(node_id, name))(		\
+		INTC_DT_IRQ_HANDLER_NAME(						\
+			DT_IRQ_INTC_BY_NAME(node_id, name),				\
+			DT_IRQ_BY_NAME(node_id, name, irq)				\
+		)									\
+	)
+
+#define INTC_DT_INST_DIRECT_IRQ_HANDLER_DEFINE(inst) \
+	INTC_DT_DIRECT_IRQ_HANDLER_DEFINE(DT_DRV_INST(inst))
+
+#define INTC_DT_INST_DIRECT_IRQ_HANDLER_DEFINE_BY_IDX(inst, idx) \
+	INTC_DT_DIRECT_IRQ_HANDLER_DEFINE_BY_IDX(DT_DRV_INST(inst), idx)
+
+#define INTC_DT_INST_DIRECT_IRQ_HANDLER_DEFINE_BY_NAME(inst, name) \
+	INTC_DT_DIRECT_IRQ_HANDLER_DEFINE_BY_NAME(DT_DRV_INST(inst), name)
+
+/** Architecture specific implementations of direct IRQ handlers are included here */
+
+#endif /* ZEPHYR_INCLUDE_DRIVERS_INTC_DIRECT_IRQ_HANDLER_H_ */