| Thomas Gleixner | 2874c5f | 2019-05-27 08:55:01 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| Vivien Didelot | e7ba0fa | 2019-05-03 19:28:22 -0400 | [diff] [blame] | 2 | /* |
| 3 | * Marvell 88E6xxx System Management Interface (SMI) support |
| 4 | * |
| 5 | * Copyright (c) 2008 Marvell Semiconductor |
| 6 | * |
| 7 | * Copyright (c) 2019 Vivien Didelot <vivien.didelot@gmail.com> |
| Vivien Didelot | e7ba0fa | 2019-05-03 19:28:22 -0400 | [diff] [blame] | 8 | */ |
| 9 | |
| 10 | #ifndef _MV88E6XXX_SMI_H |
| 11 | #define _MV88E6XXX_SMI_H |
| 12 | |
| 13 | #include "chip.h" |
| 14 | |
| 15 | /* Offset 0x00: SMI Command Register */ |
| 16 | #define MV88E6XXX_SMI_CMD 0x00 |
| 17 | #define MV88E6XXX_SMI_CMD_BUSY 0x8000 |
| 18 | #define MV88E6XXX_SMI_CMD_MODE_MASK 0x1000 |
| 19 | #define MV88E6XXX_SMI_CMD_MODE_45 0x0000 |
| 20 | #define MV88E6XXX_SMI_CMD_MODE_22 0x1000 |
| 21 | #define MV88E6XXX_SMI_CMD_OP_MASK 0x0c00 |
| 22 | #define MV88E6XXX_SMI_CMD_OP_22_WRITE 0x0400 |
| 23 | #define MV88E6XXX_SMI_CMD_OP_22_READ 0x0800 |
| 24 | #define MV88E6XXX_SMI_CMD_OP_45_WRITE_ADDR 0x0000 |
| 25 | #define MV88E6XXX_SMI_CMD_OP_45_WRITE_DATA 0x0400 |
| 26 | #define MV88E6XXX_SMI_CMD_OP_45_READ_DATA 0x0800 |
| 27 | #define MV88E6XXX_SMI_CMD_OP_45_READ_DATA_INC 0x0c00 |
| 28 | #define MV88E6XXX_SMI_CMD_DEV_ADDR_MASK 0x003e |
| 29 | #define MV88E6XXX_SMI_CMD_REG_ADDR_MASK 0x001f |
| 30 | |
| 31 | /* Offset 0x01: SMI Data Register */ |
| 32 | #define MV88E6XXX_SMI_DATA 0x01 |
| 33 | |
| 34 | int mv88e6xxx_smi_init(struct mv88e6xxx_chip *chip, |
| 35 | struct mii_bus *bus, int sw_addr); |
| 36 | |
| 37 | static inline int mv88e6xxx_smi_read(struct mv88e6xxx_chip *chip, |
| 38 | int dev, int reg, u16 *data) |
| 39 | { |
| 40 | if (chip->smi_ops && chip->smi_ops->read) |
| 41 | return chip->smi_ops->read(chip, dev, reg, data); |
| 42 | |
| 43 | return -EOPNOTSUPP; |
| 44 | } |
| 45 | |
| 46 | static inline int mv88e6xxx_smi_write(struct mv88e6xxx_chip *chip, |
| 47 | int dev, int reg, u16 data) |
| 48 | { |
| 49 | if (chip->smi_ops && chip->smi_ops->write) |
| 50 | return chip->smi_ops->write(chip, dev, reg, data); |
| 51 | |
| 52 | return -EOPNOTSUPP; |
| 53 | } |
| 54 | |
| 55 | #endif /* _MV88E6XXX_SMI_H */ |