1 /* SPDX-License-Identifier: GPL-2.0-or-later WITH Linux-syscall-note */ 2 /* 3 * Definitions for virtio I2C Adpter 4 * 5 * Copyright (c) 2021 Intel Corporation. All rights reserved. 6 */ 7 8 #ifndef _UAPI_LINUX_VIRTIO_I2C_H 9 #define _UAPI_LINUX_VIRTIO_I2C_H 10 11 #include <linux/const.h> 12 #include <linux/types.h> 13 14 /* The bit 0 of the @virtio_i2c_out_hdr.@flags, used to group the requests */ 15 #define VIRTIO_I2C_FLAGS_FAIL_NEXT _BITUL(0) 16 17 /** 18 * struct virtio_i2c_out_hdr - the virtio I2C message OUT header 19 * @addr: the controlled device address 20 * @padding: used to pad to full dword 21 * @flags: used for feature extensibility 22 */ 23 struct virtio_i2c_out_hdr { 24 __le16 addr; 25 __le16 padding; 26 __le32 flags; 27 }; 28 29 /** 30 * struct virtio_i2c_in_hdr - the virtio I2C message IN header 31 * @status: the processing result from the backend 32 */ 33 struct virtio_i2c_in_hdr { 34 __u8 status; 35 }; 36 37 /* The final status written by the device */ 38 #define VIRTIO_I2C_MSG_OK 0 39 #define VIRTIO_I2C_MSG_ERR 1 40 41 #endif /* _UAPI_LINUX_VIRTIO_I2C_H */ 42