Watchdog cleanup (#15283)

Marlin/src/HAL/HAL_LINUX/HAL.h

@@ -97,6 +97,10 @@ void HAL_adc_enable_channel(int pin);
 void HAL_adc_start_conversion(const uint8_t adc_pin);
 uint16_t HAL_adc_get_result();
 
+// Reset source
+inline void HAL_clear_reset_source(void) {}
+inline uint8_t HAL_get_reset_source(void) { return RST_POWER_ON; }
+
 /* ---------------- Delay in cycles */
 FORCE_INLINE static void DELAY_CYCLES(uint64_t x) {
   Clock::delayCycles(x);

Marlin/src/HAL/HAL_LINUX/watchdog.cpp

@@ -29,18 +29,8 @@
 #include "watchdog.h"
 
 void watchdog_init() {}
+void HAL_watchdog_refresh() {}
 
-void HAL_clear_reset_source() {}
-
-uint8_t HAL_get_reset_source() {
-  return RST_POWER_ON;
-}
-
-void watchdog_reset() {}
-
-#else
-  void HAL_clear_reset_source() {}
-  uint8_t HAL_get_reset_source() { return RST_POWER_ON; }
-#endif // USE_WATCHDOG
+#endif
 
 #endif // __PLAT_LINUX__

Marlin/src/HAL/HAL_LINUX/watchdog.h

@@ -24,6 +24,4 @@
 #define WDT_TIMEOUT   4000000 // 4 second timeout
 
 void watchdog_init();
-void watchdog_reset();
-void HAL_clear_reset_source();
-uint8_t HAL_get_reset_source();
+void HAL_watchdog_refresh();