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timer: it8xxx2: enable free run timer overflow interrupt

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The ISR will be called on each overflow.

Signed-off-by: Dino Li <Dino.Li@ite.com.tw>
This commit is contained in:
Dino Li 2021-11-01 14:37:57 +08:00 • committed by Christopher Friedt
commit 963d05bd52
1 changed files with 17 additions and 1 deletions
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18
drivers/timer/ite_it8xxx2_timer.c
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@ -130,6 +130,19 @@ static void evt_timer_isr(const void *unused)
}
}
static void free_run_timer_overflow_isr(const void *unused)
{
ARG_UNUSED(unused);
/* Read to clear terminal count flag */
__unused uint8_t rc_tc = IT8XXX2_EXT_CTRLX(FREE_RUN_TIMER);
/*
* TODO: to increment 32-bit "top half" here for software 64-bit
* timer emulation.
*/
}
void sys_clock_set_timeout(int32_t ticks, bool idle)
{
uint32_t hw_cnt;
@ -304,10 +317,13 @@ int sys_clock_driver_init(const struct device *dev)
ARG_UNUSED(dev);
/* Enable 32-bit free run timer overflow interrupt */
IRQ_CONNECT(FREE_RUN_TIMER_IRQ, 0, free_run_timer_overflow_isr, NULL,
FREE_RUN_TIMER_FLAG);
/* Set 32-bit timer4 for free run*/
ret = timer_init(FREE_RUN_TIMER, EXT_PSR_32P768K, TRUE,
FREE_RUN_TIMER_MAX_CNT, TRUE, FREE_RUN_TIMER_IRQ,
FREE_RUN_TIMER_FLAG, FALSE, TRUE);
FREE_RUN_TIMER_FLAG, TRUE, TRUE);
if (ret < 0) {
LOG_ERR("Init free run timer failed");
return ret;