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path: root/drivers/i3c/sandbox_i3c.c
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Diffstat (limited to 'drivers/i3c/sandbox_i3c.c')
-rw-r--r--drivers/i3c/sandbox_i3c.c56
1 files changed, 56 insertions, 0 deletions
diff --git a/drivers/i3c/sandbox_i3c.c b/drivers/i3c/sandbox_i3c.c
new file mode 100644
index 00000000000..e452e982566
--- /dev/null
+++ b/drivers/i3c/sandbox_i3c.c
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2025 Altera Corporation <www.altera.com>
+ */
+
+#include <dm.h>
+#include <errno.h>
+#include <i3c.h>
+#include <linux/i3c/master.h>
+
+struct sandbox_i3c_priv {
+ struct i3c_priv_xfer i3c_xfers;
+};
+
+static int sandbox_i3c_priv_read(struct udevice *dev, u32 dev_number,
+ u8 *buf, u32 buf_size)
+{
+ struct sandbox_i3c_priv *priv = dev_get_priv(dev);
+ struct i3c_priv_xfer i3c_xfers;
+
+ i3c_xfers = priv->i3c_xfers;
+ i3c_xfers.data.in = buf;
+ i3c_xfers.len = buf_size;
+
+ return 0;
+}
+
+static int sandbox_i3c_priv_write(struct udevice *dev, u32 dev_number,
+ u8 *buf, u32 buf_size)
+{
+ struct sandbox_i3c_priv *priv = dev_get_priv(dev);
+ struct i3c_priv_xfer i3c_xfers;
+
+ i3c_xfers = priv->i3c_xfers;
+ i3c_xfers.data.out = buf;
+ i3c_xfers.len = buf_size;
+
+ return 0;
+}
+
+static const struct dm_i3c_ops sandbox_i3c_ops = {
+ .read = sandbox_i3c_priv_read,
+ .write = sandbox_i3c_priv_write,
+};
+
+static const struct udevice_id sandbox_i3c_ids[] = {
+ { .compatible = "sandbox,i3c" },
+ { }
+};
+
+U_BOOT_DRIVER(i3c_sandbox) = {
+ .name = "i3c_sandbox",
+ .id = UCLASS_I3C,
+ .of_match = sandbox_i3c_ids,
+ .ops = &sandbox_i3c_ops,
+};