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/*
* Marvell 88E6xxx System Management Interface (SMI) support
*
* Copyright (c) 2008 Marvell Semiconductor
*
* Copyright (c) 2019 Vivien Didelot <vivien.didelot@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef _MV88E6XXX_SMI_H
#define _MV88E6XXX_SMI_H
#include "chip.h"
/* Offset 0x00: SMI Command Register */
#define MV88E6XXX_SMI_CMD 0x00
#define MV88E6XXX_SMI_CMD_BUSY 0x8000
#define MV88E6XXX_SMI_CMD_MODE_MASK 0x1000
#define MV88E6XXX_SMI_CMD_MODE_45 0x0000
#define MV88E6XXX_SMI_CMD_MODE_22 0x1000
#define MV88E6XXX_SMI_CMD_OP_MASK 0x0c00
#define MV88E6XXX_SMI_CMD_OP_22_WRITE 0x0400
#define MV88E6XXX_SMI_CMD_OP_22_READ 0x0800
#define MV88E6XXX_SMI_CMD_OP_45_WRITE_ADDR 0x0000
#define MV88E6XXX_SMI_CMD_OP_45_WRITE_DATA 0x0400
#define MV88E6XXX_SMI_CMD_OP_45_READ_DATA 0x0800
#define MV88E6XXX_SMI_CMD_OP_45_READ_DATA_INC 0x0c00
#define MV88E6XXX_SMI_CMD_DEV_ADDR_MASK 0x003e
#define MV88E6XXX_SMI_CMD_REG_ADDR_MASK 0x001f
/* Offset 0x01: SMI Data Register */
#define MV88E6XXX_SMI_DATA 0x01
int mv88e6xxx_smi_init(struct mv88e6xxx_chip *chip,
struct mii_bus *bus, int sw_addr);
static inline int mv88e6xxx_smi_read(struct mv88e6xxx_chip *chip,
int dev, int reg, u16 *data)
{
if (chip->smi_ops && chip->smi_ops->read)
return chip->smi_ops->read(chip, dev, reg, data);
return -EOPNOTSUPP;
}
static inline int mv88e6xxx_smi_write(struct mv88e6xxx_chip *chip,
int dev, int reg, u16 data)
{
if (chip->smi_ops && chip->smi_ops->write)
return chip->smi_ops->write(chip, dev, reg, data);
return -EOPNOTSUPP;
}
#endif /* _MV88E6XXX_SMI_H */
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