native: native_posix timer + irq fix
Added possibility to reconfigure CONFIG_SYS_CLOCK_TICKS_PER_SEC
for the native_posix board (before it could only be 100)
+
Fixed tickless idle support
+
Minor fixes in irq wrapping
Signed-off-by: Alberto Escolar Piedras <alpi@oticon.com>
diff --git a/drivers/timer/native_posix_timer.c b/drivers/timer/native_posix_timer.c
index accb29d..19bac09 100644
--- a/drivers/timer/native_posix_timer.c
+++ b/drivers/timer/native_posix_timer.c
@@ -15,9 +15,13 @@
#include "irq.h"
#include "device.h"
#include "drivers/system_timer.h"
+#include "sys_clock.h"
#include "timer_model.h"
#include "soc.h"
+static u64_t tick_period; /* System tick period in number of hw cycles */
+static s32_t silent_ticks;
+
/**
* Return the current HW cycle counter
* (number of microseconds since boot in 32bits)
@@ -27,14 +31,26 @@
return hwm_get_time();
}
+extern u64_t posix_get_hw_cycle(void);
+
#ifdef CONFIG_TICKLESS_IDLE
-void _timer_idle_enter(int32_t sys_ticks)
+
+/*
+ * Do not raise another ticker interrupt until the sys_ticks'th one
+ * e.g. if sys_ticks is 10, do not raise the next 9 ones
+ */
+void _timer_idle_enter(s32_t sys_ticks)
{
- hwtimer_set_silent_ticks(sys_ticks);
+ silent_ticks = sys_ticks - 1;
+ hwtimer_set_silent_ticks(silent_ticks);
}
+/*
+ * Exit from idle mode
+ */
void _timer_idle_exit(void)
{
+ silent_ticks -= hwtimer_get_pending_silent_ticks();
hwtimer_set_silent_ticks(0);
}
#endif
@@ -42,13 +58,23 @@
static void sp_timer_isr(void *arg)
{
ARG_UNUSED(arg);
+ _sys_idle_elapsed_ticks = silent_ticks + 1;
+ silent_ticks = 0;
_sys_clock_tick_announce();
}
+/*
+ * Initialize the hwtimer and setup its interrupt
+ */
int _sys_clock_driver_init(struct device *device)
{
ARG_UNUSED(device);
+ tick_period = CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC /
+ CONFIG_SYS_CLOCK_TICKS_PER_SEC;
+
+ hwtimer_enable(tick_period);
+
IRQ_CONNECT(TIMER_TICK_IRQ, 1, sp_timer_isr, 0, 0);
irq_enable(TIMER_TICK_IRQ);
