driver: i2s: add i2s driver for mcux

add i2s driver for mcux

Signed-off-by: Hake Huang <hake.huang@oss.nxp.com>

drivers/i2s/CMakeLists.txt

@@ -10,3 +10,4 @@ zephyr_library_sources_ifdef(CONFIG_I2S_STM32		i2s_ll_stm32.c)
 zephyr_library_sources_ifdef(CONFIG_I2S_LITEX		i2s_litex.c)
 zephyr_library_sources_ifdef(CONFIG_I2S_MCUX_FLEXCOMM	i2s_mcux_flexcomm.c)
 zephyr_library_sources_ifdef(CONFIG_I2S_NRFX		i2s_nrfx.c)
+zephyr_library_sources_ifdef(CONFIG_I2S_MCUX_SAI	i2s_mcux_sai.c)

drivers/i2s/Kconfig.mcux

@@ -0,0 +1,29 @@
+# MCUX I2S driver configuration options
+
+# Copyright (c) 2021, NXP
+# SPDX-License-Identifier: Apache-2.0
+
+menuconfig I2S_MCUX_SAI
+	bool "NXP MCUX I2S controller driver"
+	depends on HAS_MCUX_I2S
+	select DMA
+	help
+	  Enable I2S support on the I.MX family of processors.
+
+if I2S_MCUX_SAI
+
+config I2S_RX_BLOCK_COUNT
+	int "RX queue length"
+	default 4
+
+config I2S_TX_BLOCK_COUNT
+	int "TX queue length"
+	default 4
+
+config I2S_EDMA_BURST_SIZE
+	int "I2S EDMA BURST SIZE"
+	default 2
+	help
+	  I2S EDMA burse size in byte.
+
+endif # I2S_MCUX_SAI

drivers/i2s/i2s_mcux_sai.h

@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2021 NXP
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+
+#ifndef ZEPHYR_DRIVERS_I2S_MCUX_H_
+#define ZEPHYR_DRIVERS_I2S_MCUX_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <device.h>
+#include <fsl_sai.h>
+#include <fsl_edma.h>
+
+#define SAI_WORD_SIZE_BITS_MIN 8
+#define SAI_WORD_SIZE_BITS_MAX 32
+
+#define SAI_WORD_PER_FRAME_MIN 0
+#define SAI_WORD_PER_FRAME_MAX 32
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* ZEPHYR_DRIVERS_I2S_MCUX_H_ */