Initial commit: TXW82x FPV v2.7.0.7-42229 SDK + project sources

csky/csi_kernel/rhino/board/board_cpu_pwr_systick.c

@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2018 Alibaba Group Holding Limited
+ */
+
+/*
+DESCRIPTION
+This file provides two fundtions systick_suspend()/systick_resume()
+which is used by cpu tickless module to suspend/resume system tick
+interrupt.
+
+Differrent board may has different way to suspend/resume system tick
+interrupt, please reference your board/soc user manual to find the
+detail for how to implement these two functions.
+*/
+
+#include "k_api.h"
+#include "cpu_pwr_config.h"
+#include "port.h"
+#include "csi_core.h"
+#if (RHINO_CONFIG_CPU_PWR_MGMT > 0)
+extern uint32_t csi_coret_suspend();
+extern uint32_t csi_coret_resume();
+
+void systick_suspend(void)
+{
+    CORET->CTRL  = CORET_CTRL_CLKSOURCE_Msk | CORET_CTRL_TICKINT_Msk;
+}
+
+void systick_resume(void)
+{
+    CORET->CTRL  = CORET_CTRL_CLKSOURCE_Msk |
+                   CORET_CTRL_TICKINT_Msk |
+                   CORET_CTRL_ENABLE_Msk;                              /* Enable CORET IRQ and CORET Timer */
+}
+
+#else
+
+void systick_suspend(void)
+{
+}
+
+void systick_resume(void)
+{
+}
+
+#endif /* RHINO_CONFIG_CPU_PWR_MGMT */