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2874c5fd | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
e7ba0fad VD |
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> | |
e7ba0fad VD |
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 */ |