| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| /* |
| * PIIX4/SB800 SMBus Interfaces |
| * |
| * Copyright (c) 2024, Advanced Micro Devices, Inc. |
| * All Rights Reserved. |
| * |
| * Authors: Shyam Sundar S K <[email protected]> |
| * Sanket Goswami <[email protected]> |
| */ |
| |
| #ifndef I2C_PIIX4_H |
| #define I2C_PIIX4_H |
| |
| #include <linux/types.h> |
| |
| /* PIIX4 SMBus address offsets */ |
| #define SMBHSTSTS (0x00 + piix4_smba) |
| #define SMBHSLVSTS (0x01 + piix4_smba) |
| #define SMBHSTCNT (0x02 + piix4_smba) |
| #define SMBHSTCMD (0x03 + piix4_smba) |
| #define SMBHSTADD (0x04 + piix4_smba) |
| #define SMBHSTDAT0 (0x05 + piix4_smba) |
| #define SMBHSTDAT1 (0x06 + piix4_smba) |
| #define SMBBLKDAT (0x07 + piix4_smba) |
| #define SMBSLVCNT (0x08 + piix4_smba) |
| #define SMBSHDWCMD (0x09 + piix4_smba) |
| #define SMBSLVEVT (0x0A + piix4_smba) |
| #define SMBSLVDAT (0x0C + piix4_smba) |
| |
| /* PIIX4 constants */ |
| #define PIIX4_BLOCK_DATA 0x14 |
| |
| struct sb800_mmio_cfg { |
| void __iomem *addr; |
| bool use_mmio; |
| }; |
| |
| int piix4_sb800_port_sel(u8 port, struct sb800_mmio_cfg *mmio_cfg); |
| int piix4_transaction(struct i2c_adapter *piix4_adapter, unsigned short piix4_smba); |
| int piix4_sb800_region_request(struct device *dev, struct sb800_mmio_cfg *mmio_cfg); |
| void piix4_sb800_region_release(struct device *dev, struct sb800_mmio_cfg *mmio_cfg); |
| |
| #endif /* I2C_PIIX4_H */ |
