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drivers: timer: nrf_rtc_timer: Implement stop function

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Implements functionality to stop the nRF RTC system timer source.

Signed-off-by: Jamie McCrae <jamie.mccrae@nordicsemi.no>
This commit is contained in:
Jamie McCrae 2023-04-04 14:35:19 +01:00 • committed by Carles Cufí
commit 7924c667f3
2 changed files with 23 additions and 8 deletions
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1
drivers/timer/Kconfig.nrf_rtc
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@ -8,6 +8,7 @@ config NRF_RTC_TIMER
depends on CLOCK_CONTROL
depends on SOC_COMPATIBLE_NRF
select TICKLESS_CAPABLE
select SYSTEM_TIMER_HAS_DISABLE_SUPPORT
depends on !$(dt_nodelabel_enabled,rtc1)
help
This module implements a kernel device driver for the nRF Real Time

30
drivers/timer/nrf_rtc_timer.c
View file

@ -660,15 +660,8 @@ uint32_t sys_clock_cycle_get_32(void)
return (uint32_t)z_nrf_rtc_timer_read();
}
static int sys_clock_driver_init(const struct device *dev)
static void int_event_disable_rtc(void)
{
ARG_UNUSED(dev);
static const enum nrf_lfclk_start_mode mode =
IS_ENABLED(CONFIG_SYSTEM_CLOCK_NO_WAIT) ?
CLOCK_CONTROL_NRF_LF_START_NOWAIT :
(IS_ENABLED(CONFIG_SYSTEM_CLOCK_WAIT_FOR_AVAILABILITY) ?
CLOCK_CONTROL_NRF_LF_START_AVAILABLE :
CLOCK_CONTROL_NRF_LF_START_STABLE);
uint32_t mask = NRF_RTC_INT_TICK_MASK |
NRF_RTC_INT_OVERFLOW_MASK |
NRF_RTC_INT_COMPARE0_MASK |
@ -681,6 +674,27 @@ static int sys_clock_driver_init(const struct device *dev)
/* Reset event routing enabling to expected reset values */
nrf_rtc_event_disable(RTC, mask);
}
void sys_clock_disable(void)
{
nrf_rtc_task_trigger(RTC, NRF_RTC_TASK_STOP);
irq_disable(RTC_IRQn);
int_event_disable_rtc();
NVIC_ClearPendingIRQ(RTC_IRQn);
}
static int sys_clock_driver_init(const struct device *dev)
{
ARG_UNUSED(dev);
static const enum nrf_lfclk_start_mode mode =
IS_ENABLED(CONFIG_SYSTEM_CLOCK_NO_WAIT) ?
CLOCK_CONTROL_NRF_LF_START_NOWAIT :
(IS_ENABLED(CONFIG_SYSTEM_CLOCK_WAIT_FOR_AVAILABILITY) ?
CLOCK_CONTROL_NRF_LF_START_AVAILABLE :
CLOCK_CONTROL_NRF_LF_START_STABLE);
int_event_disable_rtc();
/* TODO: replace with counter driver to access RTC */
nrf_rtc_prescaler_set(RTC, 0);