drivers: interrupt_controller: Add STM32G0X interrupt support

Add interrupt support for STM32G0X SoC series.

Signed-off-by: Philippe Retornaz <[email protected]>
Signed-off-by: Francois Ramu <[email protected]>

# Conflicts:
#	drivers/interrupt_controller/exti_stm32.c

Author: FRASTM

drivers/interrupt_controller/Kconfig.stm32

@@ -16,28 +16,28 @@ config EXTI_STM32
 config EXTI_STM32_EXTI1_0_IRQ_PRI
 	int "EXTI1:0 IRQ priority"
 	depends on EXTI_STM32
-	depends on SOC_SERIES_STM32F0X || SOC_SERIES_STM32L0X
+	depends on SOC_SERIES_STM32F0X || SOC_SERIES_STM32L0X || SOC_SERIES_STM32G0X
 	default 0
 	help
 	 IRQ priority of EXTI1:0 interrupt
 
 config EXTI_STM32_EXTI3_2_IRQ_PRI
 	int "EXTI3:2 IRQ priority"
 	depends on EXTI_STM32
-	depends on SOC_SERIES_STM32F0X || SOC_SERIES_STM32L0X
+	depends on SOC_SERIES_STM32F0X || SOC_SERIES_STM32L0X || SOC_SERIES_STM32G0X
 	default 0
 	help
 	 IRQ priority of EXTI3:2 interrupt
 
 config EXTI_STM32_EXTI15_4_IRQ_PRI
 	int "EXTI15:4 IRQ priority"
 	depends on EXTI_STM32
-	depends on SOC_SERIES_STM32F0X || SOC_SERIES_STM32L0X
+	depends on SOC_SERIES_STM32F0X || SOC_SERIES_STM32L0X || SOC_SERIES_STM32G0X
 	default 0
 	help
 	 IRQ priority of EXTI15:4 interrupt
 
-if SOC_SERIES_STM32F0X!=y && SOC_SERIES_STM32L0X!=y
+if SOC_SERIES_STM32F0X!=y && SOC_SERIES_STM32L0X!=y && SOC_SERIES_STM32G0X!=y
 
 config EXTI_STM32_EXTI0_IRQ_PRI
 	int "EXTI0 IRQ priority"
@@ -170,12 +170,12 @@ config EXTI_STM32_EXTI15_10_IRQ_PRI
 	 IRQ priority of EXTI15:10 interrupt
 endif # SOC_SERIES_STM32MP1X!=y
 
-endif # SOC_SERIES_STM32F0X!=y && SOC_SERIES_STM32L0X!=y
+endif # SOC_SERIES_STM32F0X!=y && SOC_SERIES_STM32L0X!=y && SOC_SERIES_STM32G0X!=y
 
 config EXTI_STM32_PVD_IRQ_PRI
 	int "RVD Through IRQ priority"
 	depends on EXTI_STM32
-	depends on SOC_SERIES_STM32F4X || SOC_SERIES_STM32F7X || SOC_SERIES_STM32F2X
+	depends on SOC_SERIES_STM32F4X || SOC_SERIES_STM32F7X || SOC_SERIES_STM32F2X || SOC_SERIES_STM32G0X
 	default 0
 	help
 	 IRQ priority of RVD Through interrupt

drivers/interrupt_controller/exti_stm32.c

@@ -11,7 +11,7 @@
  *
  * Driver is currently implemented to support following EXTI lines
  * STM32F1/STM32F3: Lines 0 to 15. Lines > 15 not supported
- * STM32F0/STM32L0/STM32L4: Lines 0 to 15. Lines > 15 are not mapped on an IRQ
+ * STM32F0/STM32L0/STM32L4/STM32G0: Lines 0 to 15. Lines > 15 are not mapped on an IRQ
  * STM32F2/STM32F4: Lines 0 to 15, 16, 17 18, 21 and 22. Others not supported
  * STM32F7: Lines 0 to 15, 16, 17 18, 21, 22 and 23. Others not supported
  *
@@ -22,7 +22,8 @@
 #include "exti_stm32.h"
 
 #if defined(CONFIG_SOC_SERIES_STM32F0X) || \
-	defined(CONFIG_SOC_SERIES_STM32L0X)
+    defined(CONFIG_SOC_SERIES_STM32L0X) || \
+    defined(CONFIG_SOC_SERIES_STM32G0X)
 const IRQn_Type exti_irq_table[] = {
 	EXTI0_1_IRQn, EXTI0_1_IRQn, EXTI2_3_IRQn, EXTI2_3_IRQn,
 	EXTI4_15_IRQn, EXTI4_15_IRQn, EXTI4_15_IRQn, EXTI4_15_IRQn,
@@ -132,7 +133,7 @@ void stm32_exti_disable(int line)
 static inline int stm32_exti_is_pending(int line)
 {
 	if (line < 32) {
-#if defined(CONFIG_SOC_SERIES_STM32MP1X)
+#if defined(CONFIG_SOC_SERIES_STM32MP1X) || defined(CONFIG_SOC_SERIES_STM32G0X)
 		return (LL_EXTI_IsActiveRisingFlag_0_31(1 << line) ||
 			LL_EXTI_IsActiveFallingFlag_0_31(1 << line));
 #else
@@ -152,7 +153,7 @@ static inline int stm32_exti_is_pending(int line)
 static inline void stm32_exti_clear_pending(int line)
 {
 	if (line < 32) {
-#if defined(CONFIG_SOC_SERIES_STM32MP1X)
+#if defined(CONFIG_SOC_SERIES_STM32MP1X) || defined(CONFIG_SOC_SERIES_STM32G0X)
 		LL_EXTI_ClearRisingFlag_0_31(1 << line);
 		LL_EXTI_ClearFallingFlag_0_31(1 << line);
 #else
@@ -214,7 +215,9 @@ static void __stm32_exti_isr(int min, int max, void *arg)
 	}
 }
 
-#if defined(CONFIG_SOC_SERIES_STM32F0X) || defined(CONFIG_SOC_SERIES_STM32L0X)
+#if defined(CONFIG_SOC_SERIES_STM32F0X) || \
+	defined(CONFIG_SOC_SERIES_STM32L0X) || \
+	defined(CONFIG_SOC_SERIES_STM32G0X)
 static inline void __stm32_exti_isr_0_1(void *arg)
 {
 	__stm32_exti_isr(0, 2, arg);
@@ -409,7 +412,8 @@ static void __stm32_exti_connect_irqs(struct device *dev)
 	ARG_UNUSED(dev);
 
 #if defined(CONFIG_SOC_SERIES_STM32F0X) || \
-	defined(CONFIG_SOC_SERIES_STM32L0X)
+	defined(CONFIG_SOC_SERIES_STM32L0X) || \
+	defined(CONFIG_SOC_SERIES_STM32G0X)
 	IRQ_CONNECT(EXTI0_1_IRQn,
 		CONFIG_EXTI_STM32_EXTI1_0_IRQ_PRI,
 		__stm32_exti_isr_0_1, DEVICE_GET(exti_stm32),

soc/arm/st_stm32/stm32g0/soc.h

@@ -36,6 +36,10 @@
 #include <stm32g0xx_ll_rcc.h>
 #endif /* CONFIG_CLOCK_CONTROL_STM32_CUBE */
 
+#ifdef CONFIG_EXTI_STM32
+#include <stm32g0xx_ll_exti.h>
+#endif
+
 #ifdef CONFIG_GPIO_STM32
 #include <stm32g0xx_ll_gpio.h>
 #endif