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drivers: counter: Update NXP LPC RTC for wakeup source

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Add support to wakeup from low power modes

Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
This commit is contained in:
Mahesh Mahadevan 2022-10-26 22:02:55 -05:00 • committed by David Leach
commit 3f38b011c3
1 changed files with 13 additions and 1 deletions
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14
drivers/counter/counter_mcux_lpc_rtc.c
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@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2021, NXP * Copyright 2021-22, NXP
* *
* SPDX-License-Identifier: Apache-2.0 * SPDX-License-Identifier: Apache-2.0
*/ */
@ -9,6 +9,7 @@
#include <zephyr/drivers/counter.h> #include <zephyr/drivers/counter.h>
#include <zephyr/irq.h> #include <zephyr/irq.h>
#include <fsl_rtc.h> #include <fsl_rtc.h>
#include "fsl_power.h"
#include <zephyr/logging/log.h> #include <zephyr/logging/log.h>
LOG_MODULE_REGISTER(mcux_rtc, CONFIG_COUNTER_LOG_LEVEL); LOG_MODULE_REGISTER(mcux_rtc, CONFIG_COUNTER_LOG_LEVEL);
@ -24,6 +25,8 @@ struct mcux_lpc_rtc_config {
struct counter_config_info info; struct counter_config_info info;
RTC_Type *base; RTC_Type *base;
void (*irq_config_func)(const struct device *dev); void (*irq_config_func)(const struct device *dev);
/* Device defined as wake-up source */
bool wakeup_source;
}; };
static int mcux_lpc_rtc_start(const struct device *dev) static int mcux_lpc_rtc_start(const struct device *dev)
@ -209,6 +212,11 @@ static int mcux_lpc_rtc_init(const struct device *dev)
config->irq_config_func(dev); config->irq_config_func(dev);
if (config->wakeup_source) {
/* Enable the bit to wakeup from Deep Power Down mode */
RTC_EnableAlarmTimerInterruptFromDPD(config->base, true);
}
return 0; return 0;
} }
@ -234,6 +242,7 @@ static const struct counter_driver_api mcux_rtc_driver_api = {
.flags = COUNTER_CONFIG_INFO_COUNT_UP, \ .flags = COUNTER_CONFIG_INFO_COUNT_UP, \
.channels = 1, \ .channels = 1, \
}, \ }, \
.wakeup_source = DT_INST_PROP(id, wakeup_source) \
}; \ }; \
static struct mcux_lpc_rtc_data mcux_lpc_rtc_data_##id; \ static struct mcux_lpc_rtc_data mcux_lpc_rtc_data_##id; \
DEVICE_DT_INST_DEFINE(id, &mcux_lpc_rtc_init, NULL, \ DEVICE_DT_INST_DEFINE(id, &mcux_lpc_rtc_init, NULL, \
@ -246,6 +255,9 @@ static const struct counter_driver_api mcux_rtc_driver_api = {
DT_INST_IRQ(id, priority), \ DT_INST_IRQ(id, priority), \
mcux_lpc_rtc_isr, DEVICE_DT_INST_GET(id), 0); \ mcux_lpc_rtc_isr, DEVICE_DT_INST_GET(id), 0); \
irq_enable(DT_INST_IRQN(id)); \ irq_enable(DT_INST_IRQN(id)); \
if (DT_INST_PROP(id, wakeup_source)) { \
EnableDeepSleepIRQ(DT_INST_IRQN(id)); \
} \
} }
DT_INST_FOREACH_STATUS_OKAY(COUNTER_LPC_RTC_DEVICE) DT_INST_FOREACH_STATUS_OKAY(COUNTER_LPC_RTC_DEVICE)