45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/* 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 <Shyam-sundar.S-k@amd.com>
|
|
* Sanket Goswami <Sanket.Goswami@amd.com>
|
|
*/
|
|
|
|
#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 */
|