From: Dinesh Maniyam <dinesh.mani...@altera.com>
Add s simple test for the I3C uclass in sandbox.
Signed-off-by: Dinesh Maniyam <dinesh.mani...@altera.com>
---
arch/sandbox/dts/test.dts | 8 ++++++
drivers/i3c/Kconfig | 6 +++++
drivers/i3c/Makefile | 1 +
drivers/i3c/sandbox_i3c.c | 56 +++++++++++++++++++++++++++++++++++++++
test/dm/Makefile | 1 +
test/dm/i3c.c | 34 ++++++++++++++++++++++++
6 files changed, 106 insertions(+)
create mode 100644 drivers/i3c/sandbox_i3c.c
create mode 100644 test/dm/i3c.c
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index b8f3012873e..491c7dd56b1 100644
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -935,6 +935,14 @@
};
};
+ i3c0 {
+ compatible = "sandbox,i3c";
+ };
+
+ i3c1 {
+ compatible = "sandbox,i3c";
+ };
+
bootcount@0 {
compatible = "u-boot,bootcount-rtc";
rtc = <&rtc_1>;
diff --git a/drivers/i3c/Kconfig b/drivers/i3c/Kconfig
index d4451057de0..d877a744353 100644
--- a/drivers/i3c/Kconfig
+++ b/drivers/i3c/Kconfig
@@ -14,6 +14,12 @@ menuconfig I3C
If you want I3C support, you should say Y here and also to the
specific driver for your bus adapter(s) below.
+config I3C_SANDBOX
+ bool "Enable support for the sandbox I3C"
+ help
+ This is a sandbox I3C used for testing. It provides 2 interfaces and
+ records the settings passed into it.
+
if I3C
source "drivers/i3c/master/Kconfig"
diff --git a/drivers/i3c/Makefile b/drivers/i3c/Makefile
index 5ddc4743c86..d38d2350c9a 100644
--- a/drivers/i3c/Makefile
+++ b/drivers/i3c/Makefile
@@ -2,3 +2,4 @@
obj-y := i3c-uclass.o device.o master.o
obj-y += master/
+obj-$(CONFIG_I3C_SANDBOX) += sandbox_i3c.o
diff --git a/drivers/i3c/sandbox_i3c.c b/drivers/i3c/sandbox_i3c.c
new file mode 100644
index 00000000000..1b497a49041
--- /dev/null
+++ b/drivers/i3c/sandbox_i3c.c
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2025 Altera Corporation <www.altera.com>
+ */
+
+#include <dm.h>
+#include <errno.h>
+#include <i3c.h>
+#include <linux/i3c/master.h>
+
+struct sandbox_i3c_priv {
+ struct i3c_priv_xfer i3c_xfers;
+};
+
+static int sandbox_i3c_priv_read(struct udevice *dev, u8 dev_number,
+ u8 *buf, int buf_size)
+{
+ struct sandbox_i3c_priv *priv = dev_get_priv(dev);
+ struct i3c_priv_xfer i3c_xfers;
+
+ i3c_xfers = priv->i3c_xfers;
+ i3c_xfers.data.in = buf;
+ i3c_xfers.len = buf_size;
+
+ return 0;
+}
+
+static int sandbox_i3c_priv_write(struct udevice *dev, u8 dev_number,
+ u8 *buf, int buf_size)
+{
+ struct sandbox_i3c_priv *priv = dev_get_priv(dev);
+ struct i3c_priv_xfer i3c_xfers;
+
+ i3c_xfers = priv->i3c_xfers;
+ i3c_xfers.data.out = buf;
+ i3c_xfers.len = buf_size;
+
+ return 0;
+}
+
+static const struct dm_i3c_ops sandbox_i3c_ops = {
+ .read = sandbox_i3c_priv_read,
+ .write = sandbox_i3c_priv_write,
+};
+
+static const struct udevice_id sandbox_i3c_ids[] = {
+ { .compatible = "sandbox,i3c" },
+ { }
+};
+
+U_BOOT_DRIVER(i3c_sandbox) = {
+ .name = "i3c_sandbox",
+ .id = UCLASS_I3C,
+ .of_match = sandbox_i3c_ids,
+ .ops = &sandbox_i3c_ops,
+};
diff --git a/test/dm/Makefile b/test/dm/Makefile
index e44f3d89e77..c6c12713d7f 100644
--- a/test/dm/Makefile
+++ b/test/dm/Makefile
@@ -59,6 +59,7 @@ obj-$(CONFIG_FWU_MDATA_GPT_BLK) += fwu_mdata.o
obj-$(CONFIG_SANDBOX) += host.o
obj-$(CONFIG_DM_HWSPINLOCK) += hwspinlock.o
obj-$(CONFIG_DM_I2C) += i2c.o
+obj-$(CONFIG_I3C) += i3c.o
obj-$(CONFIG_SOUND) += i2s.o
obj-$(CONFIG_CLK_K210_SET_RATE) += k210_pll.o
obj-$(CONFIG_IOMMU) += iommu.o
diff --git a/test/dm/i3c.c b/test/dm/i3c.c
new file mode 100644
index 00000000000..81336e67555
--- /dev/null
+++ b/test/dm/i3c.c
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2025 Altera Corporation <www.altera.com>
+ */
+
+#include <dm.h>
+#include <i3c.h>
+#include <dm/test.h>
+#include <test/ut.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* Basic test of the i3c uclass */
+static int dm_test_i3c_base(struct unit_test_state *uts)
+{
+ struct udevice *dev;
+
+ ut_assertok(uclass_get_device(UCLASS_I3C, 0, &dev));
+ ut_assertok(dm_i3c_read(dev, 0, NULL, 1));
+ ut_assertok(dm_i3c_read(dev, 0, NULL, 4));
+ ut_assertok(dm_i3c_write(dev, 0, "AABB", 2));
+ ut_assertok(dm_i3c_write(dev, 0, "AABBCCDD", 4));
+
+ ut_assertok(uclass_get_device(UCLASS_I3C, 1, &dev));
+ ut_assertok(dm_i3c_read(dev, 1, NULL, 1));
+ ut_assertok(dm_i3c_read(dev, 1, NULL, 4));
+ ut_assertok(dm_i3c_write(dev, 1, "AABB", 2));
+ ut_assertok(dm_i3c_write(dev, 1, "AABBCCDD", 4));
+
+ ut_asserteq(-ENODEV, uclass_get_device(UCLASS_I3C, 2, &dev));
+
+ return 0;
+}
+DM_TEST(dm_test_i3c_base, UTF_SCAN_PDATA | UTF_SCAN_FDT);
--
2.35.3
