drivers: counter/lptmr: Enable lptmr wakeup feature

1. Enable lptmr wakeup feature
2. Enable lptmr get_freq function

Signed-off-by: Zhaoxiang Jin <[email protected]>

Author: ZhaoxiangJin

drivers/counter/Kconfig.mcux_lptmr

@@ -3,9 +3,22 @@
 # Copyright (c) 2020 Vestas Wind Systems A/S
 # SPDX-License-Identifier: Apache-2.0
 
-config COUNTER_MCUX_LPTMR
-	bool "MCUX LPTMR driver"
-	default y
-	depends on DT_HAS_NXP_LPTMR_ENABLED
-	help
-	  Enable support for the MCUX Low Power Timer (LPTMR).
+if MCUX_HW_HAS_LPTMR0
+mcux_hw_lptmr_index = 0
+rsource "Kconfig.mcux_lptmr_instance"
+endif
+
+if MCUX_HW_HAS_LPTMR1
+mcux_hw_lptmr_index = 1
+rsource "Kconfig.mcux_lptmr_instance"
+endif
+
+if MCUX_HW_HAS_LPTMR2
+mcux_hw_lptmr_index = 2
+rsource "Kconfig.mcux_lptmr_instance"
+endif
+
+if MCUX_HW_HAS_LPTMR3
+mcux_hw_lptmr_index = 3
+rsource "Kconfig.mcux_lptmr_instance"
+endif

drivers/counter/Kconfig.mcux_lptmr_instance

@@ -0,0 +1,23 @@
+# MCUXpresso SDK Low Power Timer (LPTMR)
+
+# Copyright (c) 2020 Vestas Wind Systems A/S
+# SPDX-License-Identifier: Apache-2.0
+
+config COUNTER_MCUX_LPTMR
+	bool "MCUX LPTMR driver"
+	default y
+	depends on DT_HAS_NXP_LPTMR_ENABLED
+	help
+	  Enable support for the MCUX Low Power Timer (LPTMR).
+
+if PM || POWEROFF
+
+# Only include following kconfig option when the lptmr
+# works as a wakeup source.
+config COUNTER_MCUX_LPTMR_WAKEUP_SOURCE_INDEX
+	int "Index in wakeup unit when LPTMR is used as a wakeup source"
+	default 6 if SOC_FAMILY_MCXN || SOC_FAMILY_MCXA
+	default 0 if SOC_FAMILY_MCXW
+	depends on ($(dt_nodelabel_bool_prop,lptmr$(mcux_hw_lptmr_index),wakeup-source))
+
+endif

drivers/counter/counter_mcux_lptmr.c

@@ -11,6 +11,12 @@
 #include <zephyr/drivers/counter.h>
 #include <zephyr/irq.h>
 #include <fsl_lptmr.h>
+#if defined(CONFIG_PM) || defined(CONFIG_POWEROFF)
+#if defined(CONFIG_SOC_FAMILY_MCXN) || defined(CONFIG_SOC_FAMILY_MCXA) || \
+	defined(CONFIG_SOC_FAMILY_MCXW)
+#include <fsl_wuu.h>
+#endif
+#endif
 
 struct mcux_lptmr_config {
 	struct counter_config_info info;
@@ -22,6 +28,9 @@ struct mcux_lptmr_config {
 	lptmr_pin_select_t pin;
 	lptmr_pin_polarity_t polarity;
 	void (*irq_config_func)(const struct device *dev);
+#if defined(CONFIG_PM) || defined(CONFIG_POWEROFF)
+	bool wakeup_source;
+#endif
 };
 
 struct mcux_lptmr_data {
@@ -106,6 +115,13 @@ static uint32_t mcux_lptmr_get_top_value(const struct device *dev)
 	return (config->base->CMR & LPTMR_CMR_COMPARE_MASK) + 1U;
 }
 
+static uint32_t mcux_lptmr_get_freq(const struct device *dev)
+{
+	const struct mcux_lptmr_config *config = dev->config;
+
+	return config->info.freq;
+}
+
 static void mcux_lptmr_isr(const struct device *dev)
 {
 	const struct mcux_lptmr_config *config = dev->config;
@@ -141,6 +157,20 @@ static int mcux_lptmr_init(const struct device *dev)
 
 	LPTMR_SetTimerPeriod(config->base, config->info.max_top_value);
 
+#if defined(CONFIG_PM) || defined(CONFIG_POWEROFF)
+#if defined(CONFIG_SOC_FAMILY_MCXN) || defined(CONFIG_SOC_FAMILY_MCXA) || \
+	defined(CONFIG_SOC_FAMILY_MCXW)
+	if (config->wakeup_source) {
+		WUU_SetInternalWakeUpModulesConfig(WUU0,
+			CONFIG_COUNTER_MCUX_LPTMR_WAKEUP_SOURCE_INDEX,
+			kWUU_InternalModuleInterrupt);
+	}
+#elif
+	/* Other platforms may also use lptmr as the wakeup source, but the wakeup source
+	 * management is not done using WUU.
+	 */
+#endif
+#endif
 	config->irq_config_func(dev);
 
 	return 0;
@@ -153,8 +183,16 @@ static DEVICE_API(counter, mcux_lptmr_driver_api) = {
 	.set_top_value = mcux_lptmr_set_top_value,
 	.get_pending_int = mcux_lptmr_get_pending_int,
 	.get_top_value = mcux_lptmr_get_top_value,
+	.get_freq = mcux_lptmr_get_freq,
 };
 
+#if defined(CONFIG_PM) || defined(CONFIG_POWEROFF)
+#define LPTMR_ENABLED_WAKEUP_FUNCTION(inst)	\
+	.wakeup_source = DT_INST_PROP_OR(inst, wakeup_source, 0),
+#else
+#define LPTMR_ENABLED_WAKEUP_FUNCTION(inst)
+#endif
+
 #define COUNTER_MCUX_LPTMR_DEVICE_INIT(n)					\
 	static void mcux_lptmr_irq_config_##n(const struct device *dev)		\
 	{									\
@@ -193,6 +231,7 @@ static DEVICE_API(counter, mcux_lptmr_driver_api) = {
 		.prescaler_glitch = DT_INST_PROP(n, prescale_glitch_filter) +	\
 			DT_INST_PROP(n, timer_mode_sel) - 1,			\
 		.irq_config_func = mcux_lptmr_irq_config_##n,			\
+		LPTMR_ENABLED_WAKEUP_FUNCTION(n)				\
 	};									\
 										\
 	DEVICE_DT_INST_DEFINE(n, &mcux_lptmr_init, NULL,			\