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drivers: eliminate nano/micro kernel usage

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Jira: ZEP-1415

Change-Id: I4a009ff57edb799750175aef574a865589f96c14
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
This commit is contained in:
Anas Nashif 2016-12-19 18:41:17 -05:00 • committed by Anas Nashif
commit 3d8e86c12c
15 changed files with 39 additions and 69 deletions
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29
drivers/timer/cortex_m_systick.c
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@ -27,14 +27,6 @@
* The systick device provides a 24-bit clear-on-write, decrementing,
* wrap-on-zero counter. Only edge sensitive triggered interrupt is supported.
*
* \INTERNAL PACKAGING DETAILS
* The systick device driver is part of the microkernel in both a monolithic
* kernel system and a split kernel system; it is not included in the
* nanokernel portion of a split kernel.
*
* The device driver is also part of a nanokernel-only system, but omits more
* complex capabilities (such as tickless idle support) that are only used in
* conjunction with a microkernel.
*/
#include <kernel.h>
@ -199,7 +191,7 @@ static ALWAYS_INLINE void sysTickReloadSet(
* @brief System clock tick handler
*
* This routine handles the system clock tick interrupt. A TICK_EVENT event
* is pushed onto the microkernel stack.
* is pushed onto the kernel stack.
*
* The symbol for this routine is either _timer_int_handler.
*
@ -455,9 +447,8 @@ void _timer_idle_exit(void)
if (timer_mode == TIMER_MODE_PERIODIC) {
/*
* The timer interrupt handler is handling a completed tickless
* idle
* or this has been called by mistake; there's nothing to do
* here.
* idle or this has been called by mistake; there's nothing to
* do here.
*/
return;
}
@ -477,11 +468,10 @@ void _timer_idle_exit(void)
timer_mode = TIMER_MODE_PERIODIC;
/*
* Announce elapsed ticks to the microkernel. Note we are
* guaranteed
* Announce elapsed ticks to the kernel. Note we are guaranteed
* that the timer ISR will execute before the tick event is
* serviced,
* so _sys_idle_elapsed_ticks is adjusted to account for it.
* serviced, so _sys_idle_elapsed_ticks is adjusted to account
* for it.
*/
_sys_idle_elapsed_ticks = idle_original_ticks - 1;
_sys_clock_tick_announce();
@ -498,16 +488,15 @@ void _timer_idle_exit(void)
if (remaining == 0) {
/*
* Idle was interrupted on a tick boundary. Re-set the
* timer to
* its default value and mode.
* timer to its default value and mode.
*/
sysTickReloadSet(default_load_value);
timer_mode = TIMER_MODE_PERIODIC;
} else if (count > remaining) {
/*
* There is less time remaining to the next tick
* boundary than
* time left for idle. Leave in "one shot" mode.
* boundary than time left for idle. Leave in "one
* shot" mode.
*/
sysTickReloadSet(remaining);
}