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include/system_timer.h: Timer API cleanup

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Rename timer driver API functions to be consistent.  ADD DOCS TO THE
HEADER so implementations understand what the requirements are.
Remove some unused functions that don't need declarations here.

Also removes the per-platform #if's around the power control callback
in favor of a weak-linked noop function in the driver initialization
(adds a few bytes of code to default platforms -- we'll live, I
think).

Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
This commit is contained in:
Andy Ross 2018-09-21 09:33:36 -07:00 • committed by Anas Nashif
commit 1a1a9539ea
16 changed files with 109 additions and 82 deletions
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12
drivers/timer/hpet.c
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@ -274,7 +274,7 @@ void _timer_int_handler(void *unused)
/* If timer not programmed or already consumed exit */
if (!programmed_ticks) {
if (_sys_clock_always_on) {
z_tick_set(_get_elapsed_clock_time());
z_tick_set(z_clock_uptime());
program_max_cycles();
}
return;
@ -303,7 +303,7 @@ void _timer_int_handler(void *unused)
/* z_clock_announce(_sys_idle_elapsed_ticks) could cause new programming */
if (!programmed_ticks && _sys_clock_always_on) {
z_tick_set(_get_elapsed_clock_time());
z_tick_set(z_clock_uptime());
program_max_cycles();
}
#else
@ -357,7 +357,7 @@ void _set_time(u32_t time)
programmed_ticks = time;
z_tick_set(_get_elapsed_clock_time());
z_tick_set(z_clock_uptime());
stale_irq_check = 1;
@ -374,7 +374,7 @@ void _enable_sys_clock(void)
}
}
u64_t _get_elapsed_clock_time(void)
u64_t z_clock_uptime(void)
{
u64_t elapsed;
@ -456,7 +456,7 @@ void _timer_idle_enter(s32_t ticks /* system ticks */
*
*/
void _timer_idle_exit(void)
void z_clock_idle_exit(void)
{
#ifdef CONFIG_TICKLESS_KERNEL
if (!programmed_ticks && _sys_clock_always_on) {
@ -560,7 +560,7 @@ void _timer_idle_exit(void)
* @return 0
*/
int _sys_clock_driver_init(struct device *device)
int z_clock_driver_init(struct device *device)
{
u64_t hpetClockPeriod;
u64_t tickFempto;