drivers: i3c: Add i3c uclass driver.

Enable i3c general uclass driver. This uclass driver will have
genaral read and write api to call the specific i3c driver.

Signed-off-by: Dinesh Maniyam <[email protected]>

2 files changed, 68 insertions, 0 deletions

diff --git a/include/dw-i3c.h b/include/dw-i3c.h
index e37fd4dc325..920f18bccb4 100644
--- a/include/dw-i3c.h
+++ b/include/dw-i3c.h
@@ -7,6 +7,7 @@
 #define _DW_I3C_H_
 
 #include <clk.h>
+#include <i3c.h>
 #include <reset.h>
 #include <dm/device.h>
 #include <linux/bitops.h>
diff --git a/include/i3c.h b/include/i3c.h
new file mode 100644
index 00000000000..59c787c21db
--- /dev/null
+++ b/include/i3c.h
@@ -0,0 +1,67 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2025 Altera Corporation <www.altera.com>
+ */
+
+#include <linux/i3c/master.h>
+
+/**
+ * struct dm_i3c_ops - Driver operations for the I3C uclass
+ *
+ * This structure defines the set of operations that a driver must implement
+ * for interacting with an I3C controller in U-Boot.
+ *
+ */
+struct dm_i3c_ops {
+/**
+ * @i3c_xfers: Transfer messages in I3C
+ *
+ * @dev: I3C controller device instance.
+ * @xfers: List of I3C private SDR transfer messages.
+ * @nxfers: The number of messages to transfer.
+ *
+ * Return: 0 on success, negative error code on failure.
+ */
+	int (*i3c_xfers)(struct i3c_dev_desc *dev,
+			 struct i3c_priv_xfer *xfers,
+			 u32 nxfers);
+};
+
+/**
+ * i3c_get_ops - Retrieve the I3C operation functions for a device
+ * @dev: The I3C controller device.
+ *
+ * This macro returns the set of operation functions (`dm_i3c_ops`) implemented
+ * by the driver associated with the specified device. These operations define
+ * how the driver performs I3C communication tasks such as reading, writing,
+ * and message transfers.
+ *
+ * Return: The I3C operation structure for the device.
+ */
+#define i3c_get_ops(dev)	((struct dm_i3c_ops *)(dev)->driver->ops)
+
+/**
+ * dm_i3c_write - Perform I3C write transaction
+ *
+ * @dev: Chip to write to
+ * @dev_number: The target device number from the driver model.
+ * @buf: Buffer containing data to write
+ * @num_bytes: Number of bytes to write.
+ *
+ * Return: 0 on success, negative error code on failure.
+ */
+int dm_i3c_write(struct udevice *dev, u32 dev_number,
+		 u8 *buf, u32 num_bytes);
+
+/**
+ * dm_i3c_read - Perform I3C read transaction
+ *
+ * @dev: Chip to read from
+ * @dev_number: The target device number from the driver model.
+ * @buf: Place to put data
+ * @num_bytes: Number of bytes to read.
+ *
+ * Return: 0 on success, negative error code on failure.
+ */
+int dm_i3c_read(struct udevice *dev, u32 dev_number,
+		u8 *buf, u32 num_bytes);
\ No newline at end of file