drivers: counter: esp32c2: Add support

Add counter support to ESP32C2 and ESP8684

Signed-off-by: Raffael Rostagno <[email protected]>

Author: Raffael Rostagno

drivers/counter/counter_esp32_rtc.c

@@ -22,7 +22,7 @@
 #include <zephyr/drivers/clock_control.h>
 #include <zephyr/drivers/clock_control/esp32_clock_control.h>
 
-#if defined(CONFIG_SOC_SERIES_ESP32C3)
+#if defined(CONFIG_SOC_SERIES_ESP32C2) || defined(CONFIG_SOC_SERIES_ESP32C3)
 #include <zephyr/drivers/interrupt_controller/intc_esp32c3.h>
 #else
 #include <zephyr/drivers/interrupt_controller/intc_esp32.h>
@@ -31,7 +31,7 @@
 #include <zephyr/logging/log.h>
 LOG_MODULE_REGISTER(esp32_counter_rtc, CONFIG_COUNTER_LOG_LEVEL);
 
-#if defined(CONFIG_SOC_SERIES_ESP32C3)
+#if defined(CONFIG_SOC_SERIES_ESP32C2) || defined(CONFIG_SOC_SERIES_ESP32C3)
 #define ESP32_COUNTER_RTC_ISR_HANDLER isr_handler_t
 #else
 #define ESP32_COUNTER_RTC_ISR_HANDLER intr_handler_t
@@ -108,7 +108,8 @@ static int counter_esp32_set_alarm(const struct device *dev, uint8_t chan_id,
 	uint32_t now;
 	uint32_t ticks = 0;
 
-#if defined(CONFIG_SOC_SERIES_ESP32) || defined(CONFIG_SOC_SERIES_ESP32C3)
+#if defined(CONFIG_SOC_SERIES_ESP32) || defined(CONFIG_SOC_SERIES_ESP32C2) || \
+	defined(CONFIG_SOC_SERIES_ESP32C3)
 	/* In ESP32/C3 Series the min possible value is 30 us*/
 	if (counter_ticks_to_us(dev, alarm_cfg->ticks) < 30) {
 		return -EINVAL;

drivers/counter/counter_esp32_tmr.c

@@ -18,16 +18,16 @@
 #include <zephyr/drivers/counter.h>
 #include <zephyr/spinlock.h>
 #include <zephyr/kernel.h>
-#ifndef CONFIG_SOC_SERIES_ESP32C3
-#include <zephyr/drivers/interrupt_controller/intc_esp32.h>
-#else
+#if defined(CONFIG_SOC_SERIES_ESP32C2) || defined(CONFIG_SOC_SERIES_ESP32C3)
 #include <zephyr/drivers/interrupt_controller/intc_esp32c3.h>
+#else
+#include <zephyr/drivers/interrupt_controller/intc_esp32.h>
 #endif
 #include <zephyr/device.h>
 #include <zephyr/logging/log.h>
 LOG_MODULE_REGISTER(esp32_counter, CONFIG_COUNTER_LOG_LEVEL);
 
-#ifdef CONFIG_SOC_SERIES_ESP32C3
+#if defined(CONFIG_SOC_SERIES_ESP32C2) || defined(CONFIG_SOC_SERIES_ESP32C3)
 #define ISR_HANDLER isr_handler_t
 #else
 #define ISR_HANDLER intr_handler_t
@@ -70,9 +70,11 @@ static int counter_esp32_init(const struct device *dev)
 	case TIMER_GROUP_0:
 		periph_module_enable(PERIPH_TIMG0_MODULE);
 		break;
+#if !defined(CONFIG_SOC_SERIES_ESP32C2)
 	case TIMER_GROUP_1:
 		periph_module_enable(PERIPH_TIMG1_MODULE);
 		break;
+#endif
 	default:
 		return -ENOTSUP;
 	}

tests/drivers/counter/counter_basic_api/socs/esp32c2.overlay

@@ -0,0 +1,7 @@
+&timer0 {
+	status = "okay";
+};
+
+&rtc_timer {
+	status = "okay";
+};