drivers: counter: rtc for stm32g0 soc series

This patch set the EXTI line 19 as the RTC
on the stm32g0x serie from STMicroelectronics.

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

Author: FRASTM

drivers/counter/Kconfig.stm32_rtc

@@ -12,7 +12,7 @@ menuconfig COUNTER_RTC_STM32
 	select USE_STM32_LL_EXTI
 	help
 	  Build RTC driver for STM32 SoCs.
-	  Tested on STM32 F0, F2, F3, F4, L1, L4, F7, G4, H7 series
+	  Tested on STM32 F0, F2, F3, F4, L1, L4, F7, G0, G4, H7 series
 
 if COUNTER_RTC_STM32
 

drivers/counter/counter_ll_stm32_rtc.c

@@ -36,6 +36,8 @@ LOG_MODULE_REGISTER(counter_rtc_stm32, CONFIG_COUNTER_LOG_LEVEL);
 
 #if defined(CONFIG_SOC_SERIES_STM32L4X)
 #define RTC_EXTI_LINE	LL_EXTI_LINE_18
+#elif defined(CONFIG_SOC_SERIES_STM32G0X)
+#define RTC_EXTI_LINE	LL_EXTI_LINE_19
 #elif defined(CONFIG_SOC_SERIES_STM32F4X) \
 	|| defined(CONFIG_SOC_SERIES_STM32F0X) \
 	|| defined(CONFIG_SOC_SERIES_STM32F2X) \
@@ -274,6 +276,8 @@ void rtc_stm32_isr(const struct device *dev)
 
 #if defined(CONFIG_SOC_SERIES_STM32H7X) && defined(CONFIG_CPU_CORTEX_M4)
 	LL_C2_EXTI_ClearFlag_0_31(RTC_EXTI_LINE);
+#elif defined(CONFIG_SOC_SERIES_STM32G0X)
+	LL_EXTI_ClearRisingFlag_0_31(RTC_EXTI_LINE);
 #else
 	LL_EXTI_ClearFlag_0_31(RTC_EXTI_LINE);
 #endif