esp32s2: drivers: interrupt_controller: add interrupt allocation support

through the reuse of current esp32 interrupt allocator.

Signed-off-by: Glauber Maroto Ferreira <glauber.ferreira@espressif.com>

soc/xtensa/esp32s2/Kconfig.defconfig

@@ -20,6 +20,9 @@ config XIP
 config ISR_STACK_SIZE
 	default 2048
 
+config HEAP_MEM_POOL_SIZE
+	default 32768
+
 config IRQ_OFFLOAD_INTNUM
 	default 7
 

soc/xtensa/esp32s2/Kconfig.soc

@@ -5,6 +5,7 @@ config SOC_ESP32S2
 	bool "ESP32S2"
 	select XTENSA
 	select ATOMIC_OPERATIONS_C
+	select DYNAMIC_INTERRUPTS
 
 if SOC_ESP32S2
 

soc/xtensa/esp32s2/soc.c

@@ -8,6 +8,7 @@
 #include "soc.h"
 #include <soc/rtc_cntl_reg.h>
 #include <soc/timer_group_reg.h>
+#include <drivers/interrupt_controller/intc_esp32.h>
 #include <xtensa/config/core-isa.h>
 #include <xtensa/corebits.h>
 
@@ -117,6 +118,7 @@ void __attribute__((section(".iram1"))) __start(void)
 	*wdt_rtc_protect = 0;
 #endif
 
+	esp_intr_initialize();
 	/* Start Zephyr */
 	z_cstart();