drivers: sai: add pinctrl support in mcux sai

enable i2s pinctrl

Signed-off-by: Hake Huang <[email protected]>

Author: hakehuang

drivers/i2s/i2s_mcux_sai.c

@@ -16,8 +16,10 @@
 #include <device.h>
 #include <init.h>
 #include <drivers/dma.h>
-
 #include <drivers/i2s.h>
+#ifdef CONFIG_PINCTRL
+#include <drivers/pinctrl.h>
+#endif
 #include <drivers/clock_control.h>
 #include <dt-bindings/clock/imx_ccm.h>
 #include <soc.h>
@@ -78,6 +80,9 @@ struct i2s_mcux_config {
 	uint32_t tx_channel;
 	clock_control_subsys_t clk_sub_sys;
 	const struct device *ccm_dev;
+#ifdef CONFIG_PINCTRL
+	const struct pinctrl_dev_config *pinctrl;
+#endif
 	void (*irq_connect)(const struct device *dev);
 	bool rx_sync_mode;
 	bool tx_sync_mode;
@@ -335,7 +340,6 @@ static void enable_mclk_direction(const struct device *dev, bool dir)
 	} else {
 		*gpr &= ~mask;
 	}
-
 }
 
 static void get_mclk_rate(const struct device *dev, uint32_t *mclk)
@@ -969,6 +973,9 @@ static int i2s_mcux_initialize(const struct device *dev)
 	I2S_Type *base = (I2S_Type *)dev_cfg->base;
 	struct i2s_dev_data *dev_data = dev->data;
 	uint32_t mclk;
+#ifdef CONFIG_PINCTRL
+	int err;
+#endif
 
 	if (!dev_data->dev_dma) {
 		LOG_ERR("DMA device not found");
@@ -987,6 +994,14 @@ static int i2s_mcux_initialize(const struct device *dev)
 
 	/* register ISR */
 	dev_cfg->irq_connect(dev);
+	/* pinctrl */
+#ifdef CONFIG_PINCTRL
+	err = pinctrl_apply_state(dev_cfg->pinctrl, PINCTRL_STATE_DEFAULT);
+	if (err) {
+		LOG_ERR("mclk pinctrl setup failed (%d)", err);
+		return err;
+	}
+#endif
 
 	/*clock configuration*/
 	audio_clock_settings(dev);
@@ -1036,9 +1051,19 @@ static const struct i2s_driver_api i2s_mcux_driver_api = {
 	.trigger = i2s_mcux_trigger,
 };
 
+#ifdef CONFIG_PINCTRL
+#define PINCTRL_DEFINE(i2s_id) PINCTRL_DT_INST_DEFINE(i2s_id);
+#define PINCTRL_INIT(i2s_id) .pinctrl = PINCTRL_DT_INST_DEV_CONFIG_GET(i2s_id),
+#else
+#define PINCTRL_DEFINE(i2s_id)
+#define PINCTRL_INIT(i2s_id)
+#endif
+
 #define I2S_MCUX_INIT(i2s_id)						\
 	static void i2s_irq_connect_##i2s_id(const struct device *dev); \
 									\
+	PINCTRL_DEFINE(i2s_id)						\
+									\
 	static const struct i2s_mcux_config i2s_##i2s_id##_config = {	\
 		.base = (I2S_Type *)DT_INST_REG_ADDR(i2s_id),		\
 		.clk_src =						\
@@ -1071,6 +1096,7 @@ static const struct i2s_driver_api i2s_mcux_driver_api = {
 			DT_INST_CLOCKS_CELL_BY_IDX(i2s_id, 0, name),	\
 		.ccm_dev = DEVICE_DT_GET(DT_INST_CLOCKS_CTLR(i2s_id)),	\
 		.irq_connect = i2s_irq_connect_##i2s_id,		\
+		PINCTRL_INIT(i2s_id)					\
 		.tx_sync_mode =						\
 			   DT_INST_PROP(i2s_id, nxp_tx_sync_mode),	\
 		.rx_sync_mode =						\