Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* PIIX4/SB800 SMBus Interfaces
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*
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* Copyright (c) 2024, Advanced Micro Devices, Inc.
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* All Rights Reserved.
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*
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* Authors: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
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* Sanket Goswami <Sanket.Goswami@amd.com>
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*/
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#ifndef I2C_PIIX4_H
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#define I2C_PIIX4_H
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#include <linux/types.h>
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/* PIIX4 SMBus address offsets */
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#define SMBHSTSTS (0x00 + piix4_smba)
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#define SMBHSLVSTS (0x01 + piix4_smba)
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#define SMBHSTCNT (0x02 + piix4_smba)
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#define SMBHSTCMD (0x03 + piix4_smba)
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#define SMBHSTADD (0x04 + piix4_smba)
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#define SMBHSTDAT0 (0x05 + piix4_smba)
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#define SMBHSTDAT1 (0x06 + piix4_smba)
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#define SMBBLKDAT (0x07 + piix4_smba)
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#define SMBSLVCNT (0x08 + piix4_smba)
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#define SMBSHDWCMD (0x09 + piix4_smba)
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#define SMBSLVEVT (0x0A + piix4_smba)
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#define SMBSLVDAT (0x0C + piix4_smba)
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/* PIIX4 constants */
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#define PIIX4_BLOCK_DATA 0x14
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struct sb800_mmio_cfg {
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void __iomem *addr;
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bool use_mmio;
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};
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int piix4_sb800_port_sel(u8 port, struct sb800_mmio_cfg *mmio_cfg);
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int piix4_transaction(struct i2c_adapter *piix4_adapter, unsigned short piix4_smba);
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int piix4_sb800_region_request(struct device *dev, struct sb800_mmio_cfg *mmio_cfg);
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void piix4_sb800_region_release(struct device *dev, struct sb800_mmio_cfg *mmio_cfg);
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#endif /* I2C_PIIX4_H */
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