drivers: adc: adc_mcux_adc12: enable pinctrl for adc12 driver

enable pinctrl for adc12 driver

Signed-off-by: Daniel DeGrasse <[email protected]>

Author: danieldegrasse

drivers/adc/Kconfig.mcux

@@ -6,6 +6,7 @@
 config ADC_MCUX_ADC12
 	bool "MCUX ADC12 driver"
 	depends on HAS_MCUX_ADC12
+	select PINCTRL
 	help
 	  Enable the MCUX ADC12 driver.
 

drivers/adc/adc_mcux_adc12.c

@@ -11,6 +11,7 @@
 
 #include <drivers/adc.h>
 #include <fsl_adc12.h>
+#include <drivers/pinctrl.h>
 
 #define LOG_LEVEL CONFIG_ADC_LOG_LEVEL
 #include <logging/log.h>
@@ -26,6 +27,7 @@ struct mcux_adc12_config {
 	adc12_reference_voltage_source_t ref_src;
 	uint32_t sample_clk_count;
 	void (*irq_config_func)(const struct device *dev);
+	const struct pinctrl_dev_config *pincfg;
 };
 
 struct mcux_adc12_data {
@@ -216,6 +218,7 @@ static int mcux_adc12_init(const struct device *dev)
 	struct mcux_adc12_data *data = dev->data;
 	ADC_Type *base = config->base;
 	adc12_config_t adc_config;
+	int err;
 
 	ADC12_GetDefaultConfig(&adc_config);
 
@@ -233,6 +236,11 @@ static int mcux_adc12_init(const struct device *dev)
 	config->irq_config_func(dev);
 	data->dev = dev;
 
+	err = pinctrl_apply_state(config->pincfg, PINCTRL_STATE_DEFAULT);
+	if (err) {
+		return err;
+	}
+
 	adc_context_unlock_unconditionally(&data->ctx);
 
 	return 0;
@@ -261,6 +269,8 @@ static const struct adc_driver_api mcux_adc12_driver_api = {
 #define ACD12_MCUX_INIT(n)						\
 	static void mcux_adc12_config_func_##n(const struct device *dev); \
 									\
+	PINCTRL_DT_INST_DEFINE(n);					\
+									\
 	ASSERT_WITHIN_RANGE(DT_INST_PROP(n, clk_source), 0, 3,		\
 			    "Invalid clock source");			\
 	ASSERT_ADC12_CLK_DIV_VALID(DT_INST_PROP(n, clk_divider),	\
@@ -275,6 +285,7 @@ static const struct adc_driver_api mcux_adc12_driver_api = {
 		.ref_src = ADC12_REF_SRC(n),				\
 		.sample_clk_count = DT_INST_PROP(n, sample_time),	\
 		.irq_config_func = mcux_adc12_config_func_##n,		\
+		.pincfg = PINCTRL_DT_INST_DEV_CONFIG_GET(n),		\
 	};								\
 									\
 	static struct mcux_adc12_data mcux_adc12_data_##n = {		\

dts/bindings/adc/nxp,kinetis-adc12.yaml

@@ -5,7 +5,7 @@ description: NXP Kinetis ADC12
 
 compatible: "nxp,kinetis-adc12"
 
-include: adc-controller.yaml
+include: [adc-controller.yaml, pinctrl-device.yaml]
 
 properties:
     reg: