1 files changed, 38 insertions, 0 deletions
diff --git a/include/uapi/linux/i3c/i3cdev.h b/include/uapi/linux/i3c/i3cdev.h
new file mode 100644
index 000000000000..0897313f5516
--- /dev/null
+++ b/include/uapi/linux/i3c/i3cdev.h
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Copyright (c) 2019 Synopsys, Inc. and/or its affiliates.
+ *
+ * Author: Vitor Soares <vitor.soares@synopsys.com>
+ */
+
+#ifndef _UAPI_I3C_DEV_H_
+#define _UAPI_I3C_DEV_H_
+
+#include <linux/types.h>
+#include <linux/ioctl.h>
+
+/* IOCTL commands */
+#define I3C_DEV_IOC_MAGIC	0x07
+
+/**
+ * struct i3c_ioc_priv_xfer - I3C SDR ioctl private transfer
+ * @data: Holds pointer to userspace buffer with transmit data.
+ * @len: Length of data buffer buffers, in bytes.
+ * @rnw: encodes the transfer direction. true for a read, false for a write
+ */
+struct i3c_ioc_priv_xfer {
+	__u64 data;
+	__u16 len;
+	__u8 rnw;
+	__u8 pad[5];
+};
+
+
+#define I3C_PRIV_XFER_SIZE(N)	\
+	((((sizeof(struct i3c_ioc_priv_xfer)) * (N)) < (1 << _IOC_SIZEBITS)) \
+	? ((sizeof(struct i3c_ioc_priv_xfer)) * (N)) : 0)
+
+#define I3C_IOC_PRIV_XFER(N)	\
+	_IOC(_IOC_READ|_IOC_WRITE, I3C_DEV_IOC_MAGIC, 30, I3C_PRIV_XFER_SIZE(N))
+
+#endif