diff options
| author | Jae Hyun Yoo <jae.hyun.yoo@intel.com> | 2020-05-07 04:11:29 +0300 |
|---|---|---|
| committer | Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com> | 2021-11-05 10:22:10 +0300 |
| commit | 7b3be052d04ef830ab49db2c2b5bfb7ac42a7498 (patch) | |
| tree | e112855e0970969481adbf46fbaeb02d4f785867 /include/uapi | |
| parent | afc473da0155c0ea21251de6fb2e379b5ccbe163 (diff) | |
| download | linux-7b3be052d04ef830ab49db2c2b5bfb7ac42a7498.tar.xz | |
enable AST2600 I3C
This commit ports I3C related changes from Aspeed SDK v00.05.05.
It also includes Vitor's I3C cdev implementation which isn't
upstreamed yet so it should be refined later.
Signed-off-by: Ryan Chen <ryan_chen@aspeedtech.com>
Signed-off-by: Vitor Soares <soares@synopsys.com>
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/i3c/i3cdev.h | 38 |
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 |