/*
 * Copyright (c) 2015, Freescale Semiconductor, Inc.
 * Copyright 2016-2017 NXP
 * All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */
#ifndef _FSL_PHY_H_
#define _FSL_PHY_H_

#include "fsl_enet.h"

/*!
 * @addtogroup phy_driver
 * @{
 */

/*******************************************************************************
 * Definitions
 ******************************************************************************/

/*! @brief PHY driver version */
#define FSL_PHY_DRIVER_VERSION (MAKE_VERSION(2, 0, 0)) /*!< Version 2.0.0. */

/*! @brief Defines the PHY registers. */
#define PHY_BASICCONTROL_REG 0x00U      /*!< The PHY basic control register. */
#define PHY_BASICSTATUS_REG 0x01U       /*!< The PHY basic status register. */
#define PHY_ID1_REG 0x02U               /*!< The PHY ID one register. */
#define PHY_ID2_REG 0x03U               /*!< The PHY ID two register. */
#define PHY_AUTONEG_ADVERTISE_REG 0x04U /*!< The PHY auto-negotiate advertise register. */

/*! @brief Defines the mask flag in basic control register. */
#define PHY_BCTL_DUPLEX_MASK 0x0100U          /*!< The PHY duplex bit mask. */
#define PHY_BCTL_RESTART_AUTONEG_MASK 0x0200U /*!< The PHY restart auto negotiation mask. */
#define PHY_BCTL_AUTONEG_MASK 0x1000U         /*!< The PHY auto negotiation bit mask. */
#define PHY_BCTL_SPEED_MASK 0x2000U           /*!< The PHY speed bit mask. */
#define PHY_BCTL_LOOP_MASK 0x4000U            /*!< The PHY loop bit mask. */
#define PHY_BCTL_RESET_MASK 0x8000U           /*!< The PHY reset bit mask. */
#define PHY_BCTL_SPEED_100M_MASK  0x2000U     /*!< The PHY 100M speed mask. */

/*! @brief Defines the mask flag in basic status register. */
#define PHY_BSTATUS_LINKSTATUS_MASK 0x0004U  /*!< The PHY link status mask. */
#define PHY_BSTATUS_AUTONEGABLE_MASK 0x0008U /*!< The PHY auto-negotiation ability mask. */
#define PHY_BSTATUS_AUTONEGCOMP_MASK 0x0020U /*!< The PHY auto-negotiation complete mask. */

/*! @brief Defines the mask flag in PHY auto-negotiation advertise register. */
#define PHY_100BaseT4_ABILITY_MASK 0x200U    /*!< The PHY have the T4 ability. */
#define PHY_100BASETX_FULLDUPLEX_MASK 0x100U /*!< The PHY has the 100M full duplex ability.*/
#define PHY_100BASETX_HALFDUPLEX_MASK 0x080U /*!< The PHY has the 100M full duplex ability.*/
#define PHY_10BASETX_FULLDUPLEX_MASK 0x040U  /*!< The PHY has the 10M full duplex ability.*/
#define PHY_10BASETX_HALFDUPLEX_MASK 0x020U  /*!< The PHY has the 10M full duplex ability.*/

/*! @brief Defines the PHY status. */
enum _phy_status
{
    kStatus_PHY_SMIVisitTimeout = MAKE_STATUS(kStatusGroup_PHY, 1),  /*!< ENET PHY SMI visit timeout. */
    kStatus_PHY_AutoNegotiateFail = MAKE_STATUS(kStatusGroup_PHY, 2) /*!< ENET PHY AutoNegotiate Fail. */
};

/*! @brief Defines the PHY link speed. This is align with the speed for ENET MAC. */
typedef enum _phy_speed
{
    kPHY_Speed10M = 0U, /*!< ENET PHY 10M speed. */
    kPHY_Speed100M      /*!< ENET PHY 100M speed. */
} phy_speed_t;

/*! @brief Defines the PHY link duplex. */
typedef enum _phy_duplex
{
    kPHY_HalfDuplex = 0U, /*!< ENET PHY half duplex. */
    kPHY_FullDuplex       /*!< ENET PHY full duplex. */
} phy_duplex_t;

/*! @brief Defines the PHY loopback mode. */
typedef enum _phy_loop
{
    kPHY_LocalLoop = 0U, /*!< ENET PHY local loopback. */
    kPHY_RemoteLoop      /*!< ENET PHY remote loopback. */
} phy_loop_t;

/*******************************************************************************
 * API
 ******************************************************************************/

#if defined(__cplusplus)
extern "C" {
#endif

/*!
  * @name PHY Driver
  * @{
  */

/*!
 * @brief Initializes PHY.
 *
 *  This function initialize the SMI interface and initialize PHY.
 *  The SMI is the MII management interface between PHY and MAC, which should be
 *  firstly initialized before any other operation for PHY. The PHY initialize with auto-negotiation.
 *
 * @param base       ENET peripheral base address.
 * @param phyAddr    The PHY address.
 * @param srcClock_Hz  The module clock frequency - system clock for MII management interface - SMI.
 * @retval kStatus_Success  PHY initialize success
 * @retval kStatus_PHY_SMIVisitTimeout  PHY SMI visit time out
 * @retval kStatus_PHY_AutoNegotiateFail  PHY auto negotiate fail
 */
status_t PHY_Init(ENET_Type *base, uint32_t phyAddr, uint32_t srcClock_Hz);

/*!
 * @brief PHY Write function. This function write data over the SMI to
 * the specified PHY register. This function is called by all PHY interfaces.
 *
 * @param base    ENET peripheral base address.
 * @param phyAddr The PHY address.
 * @param phyReg  The PHY register.
 * @param data    The data written to the PHY register.
 * @retval kStatus_Success     PHY write success
 * @retval kStatus_PHY_SMIVisitTimeout  PHY SMI visit time out
 */
status_t PHY_Write(ENET_Type *base, uint32_t phyAddr, uint32_t phyReg, uint32_t data);

/*!
 * @brief PHY Read function. This interface read data over the SMI from the
 * specified PHY register. This function is called by all PHY interfaces.
 *
 * @param base     ENET peripheral base address.
 * @param phyAddr  The PHY address.
 * @param phyReg   The PHY register.
 * @param dataPtr  The address to store the data read from the PHY register.
 * @retval kStatus_Success  PHY read success
 * @retval kStatus_PHY_SMIVisitTimeout  PHY SMI visit time out
 */
status_t PHY_Read(ENET_Type *base, uint32_t phyAddr, uint32_t phyReg, uint32_t *dataPtr);

/*!
 * @brief Enables/disables PHY loopback.
 *
 * @param base     ENET peripheral base address.
 * @param phyAddr  The PHY address.
 * @param mode     The loopback mode to be enabled, please see "phy_loop_t".
 * the two loopback mode should not be both set. when one loopback mode is set
 * the other one should be disabled.
 * @param speed    PHY speed for loopback mode.
 * @param enable   True to enable, false to disable.
 * @retval kStatus_Success  PHY loopback success
 * @retval kStatus_PHY_SMIVisitTimeout  PHY SMI visit time out
 */
status_t PHY_EnableLoopback(ENET_Type *base, uint32_t phyAddr, phy_loop_t mode, phy_speed_t speed, bool enable);

/*!
 * @brief Gets the PHY link status.
 *
 * @param base     ENET peripheral base address.
 * @param phyAddr  The PHY address.
 * @param status   The link up or down status of the PHY.
 *         - true the link is up.
 *         - false the link is down.
 * @retval kStatus_Success   PHY get link status success
 * @retval kStatus_PHY_SMIVisitTimeout  PHY SMI visit time out
 */
status_t PHY_GetLinkStatus(ENET_Type *base, uint32_t phyAddr, bool *status);

/*!
 * @brief Gets the PHY autonegotiation status
 *
 * @param base     ENET peripheral base address.
 * @param phyAddr  The PHY address.
 * @param[out] status   Whether autonegotiation is done.
 * @return Error code or success
 */
status_t PHY_GetAutonegotiationStatus(ENET_Type *base, uint32_t phyAddr, bool *status);

/*!
 * @brief Starts the autonegotiation process.  Should be called after the link comes up.
 *
 * @param base     ENET peripheral base address.
 * @param phyAddr  The PHY address.
 * @return Error code or success
 */
status_t PHY_StartAutonegotiation(ENET_Type *base, uint32_t phyAddr);

/*!
 * @brief Gets the PHY link speed and duplex.
 *
 * @param base     ENET peripheral base address.
 * @param phyAddr  The PHY address.
 * @param speed    The address of PHY link speed.
 * @param duplex   The link duplex of PHY.
 * @retval kStatus_Success   PHY get link speed and duplex success
 * @retval kStatus_PHY_SMIVisitTimeout  PHY SMI visit time out
 */
status_t PHY_GetLinkSpeedDuplex(ENET_Type *base, uint32_t phyAddr, phy_speed_t *speed, phy_duplex_t *duplex);

/* @} */

#if defined(__cplusplus)
}
#endif

/*! @}*/

#endif /* _FSL_PHY_H_ */