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b875409da7
Add i3c command file to support select, get i3c device target list, read and write operation. Signed-off-by: Dinesh Maniyam <dinesh.maniyam@altera.com>
94 lines
2.6 KiB
C
94 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2025 Altera Corporation <www.altera.com>
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*/
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#include <linux/i3c/master.h>
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/**
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* struct dm_i3c_ops - Driver operations for the I3C uclass
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*
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* This structure defines the set of operations that a driver must implement
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* for interacting with an I3C controller in U-Boot.
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*
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*/
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struct dm_i3c_ops {
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/**
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* @i3c_xfers: Transfer messages in I3C
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*
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* @dev: I3C controller device instance.
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* @xfers: List of I3C private SDR transfer messages.
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* @nxfers: The number of messages to transfer.
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*
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* Return: 0 on success, negative error code on failure.
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*/
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int (*i3c_xfers)(struct i3c_dev_desc *dev,
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struct i3c_priv_xfer *xfers,
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u32 nxfers);
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/**
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* @read: Perform I3C read transaction.
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*
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* @dev: Chip to read from
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* @dev_number: The target device number from the driver model.
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* @buf: Place to put data
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* @num_bytes: Number of bytes to read.
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*
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* Return: 0 on success, negative error code on failure.
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*/
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int (*read)(struct udevice *dev, u32 dev_number,
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u8 *buf, u32 num_bytes);
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/**
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* @write: Perform I3C write transaction.
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*
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* @dev: Chip to write to
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* @dev_number: The target device number from the driver model.
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* @buf: Buffer containing data to write
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* @num_bytes: Number of bytes to write.
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*
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* Return: 0 on success, negative error code on failure.
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*/
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int (*write)(struct udevice *dev, u32 dev_number,
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u8 *buf, u32 num_bytes);
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};
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/**
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* i3c_get_ops - Retrieve the I3C operation functions for a device
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* @dev: The I3C controller device.
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*
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* This macro returns the set of operation functions (`dm_i3c_ops`) implemented
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* by the driver associated with the specified device. These operations define
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* how the driver performs I3C communication tasks such as reading, writing,
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* and message transfers.
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*
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* Return: The I3C operation structure for the device.
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*/
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#define i3c_get_ops(dev) ((struct dm_i3c_ops *)(dev)->driver->ops)
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/**
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* dm_i3c_write - Perform I3C write transaction
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*
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* @dev: Chip to write to
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* @dev_number: The target device number from the driver model.
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* @buf: Buffer containing data to write
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* @num_bytes: Number of bytes to write.
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*
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* Return: 0 on success, negative error code on failure.
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*/
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int dm_i3c_write(struct udevice *dev, u32 dev_number,
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u8 *buf, u32 num_bytes);
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/**
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* dm_i3c_read - Perform I3C read transaction
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*
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* @dev: Chip to read from
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* @dev_number: The target device number from the driver model.
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* @buf: Place to put data
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* @num_bytes: Number of bytes to read.
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*
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* Return: 0 on success, negative error code on failure.
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*/
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int dm_i3c_read(struct udevice *dev, u32 dev_number,
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u8 *buf, u32 num_bytes);
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