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virtio_i2c.h
/* SPDX-License-Identifier: GPL-2.0-or-later WITH Linux-syscall-note */ /* * Definitions for virtio I2C Adpter * * Copyright (c) 2021 Intel Corporation. All rights reserved. */ #ifndef _LINUX_VIRTIO_I2C_H #define _LINUX_VIRTIO_I2C_H #include <linux/const.h> #include <linux/types.h> /* Virtio I2C Feature bits */ #define VIRTIO_I2C_F_ZERO_LENGTH_REQUEST 0 /* The bit 0 of the @virtio_i2c_out_hdr.@flags, used to group the requests */ #define VIRTIO_I2C_FLAGS_FAIL_NEXT _BITUL(0) /* The bit 1 of the @virtio_i2c_out_hdr.@flags, used to mark a buffer as read */ #define VIRTIO_I2C_FLAGS_M_RD _BITUL(1) /** * struct virtio_i2c_out_hdr - the virtio I2C message OUT header * @addr: the controlled device address * @padding: used to pad to full dword * @flags: used for feature extensibility */ struct virtio_i2c_out_hdr { __le16 addr; __le16 padding; __le32 flags; }; /** * struct virtio_i2c_in_hdr - the virtio I2C message IN header * @status: the processing result from the backend */ struct virtio_i2c_in_hdr { __u8 status; }; /* The final status written by the device */ #define VIRTIO_I2C_MSG_OK 0 #define VIRTIO_I2C_MSG_ERR 1 #endif /* _LINUX_VIRTIO_I2C_H */