soc: nuvoton: reg: add i3c target registers and soc functions

As title.

Signed-off-by: Alvis Sun <[email protected]>

Author: alvsun

drivers/i3c/i3c_npcx.c

@@ -21,6 +21,79 @@
 #include <zephyr/logging/log.h>
 LOG_MODULE_REGISTER(npcx_i3c, CONFIG_I3C_LOG_LEVEL);
 
+/* MCONFIG options */
+#define MCONFIG_CTRENA_OFF        0x0
+#define MCONFIG_CTRENA_ON         0x1
+#define MCONFIG_CTRENA_CAPABLE    0x2
+#define MCONFIG_HKEEP_EXT_SDA_SCL 0x3
+
+/* MCTRL options */
+#define MCTRL_REQUEST_NONE          0 /* None */
+#define MCTRL_REQUEST_EMITSTARTADDR 1 /* Emit a START */
+#define MCTRL_REQUEST_EMITSTOP      2 /* Emit a STOP */
+#define MCTRL_REQUEST_IBIACKNACK    3 /* Manually ACK or NACK an IBI */
+#define MCTRL_REQUEST_PROCESSDAA    4 /* Starts the DAA process */
+#define MCTRL_REQUEST_FORCEEXIT     6 /* Emit HDR Exit Pattern  */
+/* Emits a START with address 7Eh when a slave pulls I3C_SDA low to request an IBI */
+#define MCTRL_REQUEST_AUTOIBI       7
+
+/* ACK with mandatory byte determined by IBIRULES or ACK with no mandatory byte */
+#define MCTRL_IBIRESP_ACK           0
+#define MCTRL_IBIRESP_NACK          1 /* NACK */
+#define MCTRL_IBIRESP_ACK_MANDATORY 2 /* ACK with mandatory byte  */
+#define MCTRL_IBIRESP_MANUAL        3
+
+/* For REQUEST = EmitStartAddr */
+enum npcx_i3c_mctrl_type {
+	NPCX_I3C_MCTRL_TYPE_I3C,
+	NPCX_I3C_MCTRL_TYPE_I2C,
+	NPCX_I3C_MCTRL_TYPE_I3C_HDR_DDR,
+};
+
+/* For REQUEST = ForceExit/Target Reset */
+#define MCTRL_TYPE_HDR_EXIT    0
+#define MCTRL_TYPE_TGT_RESTART 2
+
+/* MSTATUS options */
+#define MSTATUS_STATE_IDLE    0x0
+#define MSTATUS_STATE_TGTREQ  0x1
+#define MSTATUS_STATE_NORMACT 0x3 /* SDR message mode */
+#define MSTATUS_STATE_MSGDDR  0x4
+#define MSTATUS_STATE_DAA     0x5
+#define MSTATUS_STATE_IBIACK  0x6
+#define MSTATUS_STATE_IBIRCV  0x7
+#define MSTATUS_IBITYPE_NONE  0x0
+#define MSTATUS_IBITYPE_IBI   0x1
+#define MSTATUS_IBITYPE_CR    0x2
+#define MSTATUS_IBITYPE_HJ    0x3
+
+/* IBIRULES */
+#define IBIRULES_ADDR_MSK   0x3F
+#define IBIRULES_ADDR_SHIFT 0x6
+
+/* MDMACTRL options */
+#define MDMA_DMAFB_DISABLE      0x0
+#define MDMA_DMAFB_EN_ONE_FRAME 0x1
+#define MDMA_DMAFB_EN_MANUAL    0x2
+#define MDMA_DMATB_DISABLE      0x0
+#define MDMA_DMATB_EN_ONE_FRAME 0x1
+#define MDMA_DMATB_EN_MANUAL    0x2
+
+/* CTRL options */
+#define CTRL_EVENT_NORMAL    0
+#define CTRL_EVENT_IBI       1
+#define CTRL_EVENT_CNTLR_REQ 2
+#define CTRL_EVENT_HJ        3
+
+/* STATUS options */
+#define STATUS_EVDET_NONE            0
+#define STATUS_EVDET_REQ_NOT_SENT    1
+#define STATUS_EVDET_REQ_SENT_NACKED 2
+#define STATUS_EVDET_REQ_SENT_ACKED  3
+
+/*******************************************************************************
+ * Local Constants Definition
+ ******************************************************************************/
 #define NPCX_I3C_CHK_TIMEOUT_US 10000 /* Timeout for checking register status */
 #define I3C_SCL_PP_FREQ_MAX_MHZ 12500000
 #define I3C_SCL_OD_FREQ_MAX_MHZ 4170000

include/zephyr/drivers/i3c/i3c_npcx.h

@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2020 Nuvoton Technology Corporation.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef ZEPHYR_DRIVERS_I3C_I3C_NPCX_H_
+#define ZEPHYR_DRIVERS_I3C_I3C_NPCX_H_
+
+#include <zephyr/device.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef CONFIG_I3C_NPCX_DMA
+
+/**
+ * @brief Configures the application's buffer for use in MDMA mode.
+ *
+ * @param dev Pointer to the device structure for the driver instance.
+ * @param mdma_rd_buf Pointer to storage for read data
+ * @param mdma_rd_buf_size Length of the buffer to storage for read data
+ * @param mdma_wr_buf Pointer to the data to be written
+ * @param mdma_wr_buf_size Length of the buffer to be written
+ */
+void npcx_i3c_target_set_mdma_buff(const struct device *dev, uint8_t *mdma_rd_buf,
+				   uint16_t mdma_rd_buf_size, uint8_t *mdma_wr_buf,
+				   uint16_t mdma_wr_buf_size);
+
+/**
+ * @brief Retrieves the count of data received via MDMA.
+ *
+ * @param dev Pointer to the device structure for the driver instance.
+ *
+ * @return The number of data bytes read from the bus.
+ */
+uint16_t npcx_i3c_target_get_mdmafb_count(const struct device *dev);
+
+/**
+ * @brief Retrieves the count of data written to the bus via MDMA.
+ *
+ * @param dev Pointer to the device structure for the driver instance.
+ *
+ * @return The number of data bytes written to the bus.
+ */
+uint16_t npcx_i3c_target_get_mdmatb_count(const struct device *dev);
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* ZEPHYR_DRIVERS_I3C_I3C_NPCX_H_ */