zephyr/test: Add AMD STB dumping test

Add `amd.stb_dump` test.

BRANCH=none
BUG=b:246770811
TEST=Ran test

Change-Id: I44b3afd2003b0792bc17cbcdfe31be1f6f4fd6a9
Signed-off-by: Robert Zieba <robertzieba@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/4233498
Reviewed-by: Diana Z <dzigterman@chromium.org>
Reviewed-by: Keith Short <keithshort@chromium.org>

6 files changed, 120 insertions, 0 deletions

diff --git a/zephyr/test/amd/CMakeLists.txt b/zephyr/test/amd/CMakeLists.txt
new file mode 100644
index 0000000000..a46cb31520
--- /dev/null
+++ b/zephyr/test/amd/CMakeLists.txt
@@ -0,0 +1,11 @@
+# Copyright 2023 The ChromiumOS Authors
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+cmake_minimum_required(VERSION 3.13.1)
+find_package(Zephyr REQUIRED HINTS "${ZEPHYR_BASE}")
+project(amd)
+
+add_subdirectory(${PLATFORM_EC}/zephyr/test/test_utils test_utils)
+
+target_sources_ifdef(CONFIG_TEST_AMD_STB_DUMP app PRIVATE src/stb_dump.c)
\ No newline at end of file
diff --git a/zephyr/test/amd/Kconfig b/zephyr/test/amd/Kconfig
new file mode 100644
index 0000000000..e5fe04dee8
--- /dev/null
+++ b/zephyr/test/amd/Kconfig
@@ -0,0 +1,9 @@
+# Copyright 2023 The ChromiumOS Authors
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+config TEST_AMD_STB_DUMP
+	bool "Enable STB dump test"
+	select PLATFORM_EC_AMD_STB_DUMP
+
+source "Kconfig.zephyr"
diff --git a/zephyr/test/amd/boards/native_posix.overlay b/zephyr/test/amd/boards/native_posix.overlay
new file mode 100644
index 0000000000..477a989e1a
--- /dev/null
+++ b/zephyr/test/amd/boards/native_posix.overlay
@@ -0,0 +1,35 @@
+/* Copyright 2023 The ChromiumOS Authors
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include <board-overlays/native_posix.dts>
+#include <dt-bindings/gpio_defines.h>
+
+/ {
+	named-gpios {
+		compatible = "named-gpios";
+
+		/* STB dumping GPIOs */
+		gpio_ec_sfh_int_h: ec_sfh_int_h {
+			gpios = <&gpio0 0 GPIO_OUTPUT_LOW>;
+		};
+		gpio_sfh_ec_int_h: sfh_ec_int_h {
+			gpios = <&gpio0 1 GPIO_INPUT>;
+		};
+	};
+
+	gpio-interrupts {
+		compatible = "cros-ec,gpio-interrupts";
+
+		int_stb_dump: stb_dump {
+			irq-pin = <&gpio_sfh_ec_int_h>;
+			flags = <GPIO_INT_EDGE_RISING>;
+			handler = "amd_stb_dump_interrupt";
+		};
+	};
+};
+
+&gpio0 {
+	ngpios = <2>;
+};
\ No newline at end of file
diff --git a/zephyr/test/amd/prj.conf b/zephyr/test/amd/prj.conf
new file mode 100644
index 0000000000..ced2cda8f5
--- /dev/null
+++ b/zephyr/test/amd/prj.conf
@@ -0,0 +1,15 @@
+# Copyright 2023 The ChromiumOS Authors
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+CONFIG_ZTEST=y
+CONFIG_ZTEST_ASSERT_VERBOSE=1
+CONFIG_ZTEST_NEW_API=y
+CONFIG_ASSERT=y
+
+CONFIG_CROS_EC=y
+CONFIG_PLATFORM_EC=y
+CONFIG_EMUL=y
+CONFIG_GPIO=y
+
+CONFIG_AP_X86_AMD=y
diff --git a/zephyr/test/amd/src/stb_dump.c b/zephyr/test/amd/src/stb_dump.c
new file mode 100644
index 0000000000..d05041c7dc
--- /dev/null
+++ b/zephyr/test/amd/src/stb_dump.c
@@ -0,0 +1,40 @@
+/* Copyright 2023 The ChromiumOS Authors
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#include <zephyr/devicetree.h>
+#include <zephyr/drivers/gpio.h>
+#include <zephyr/drivers/gpio/gpio_emul.h>
+#include <zephyr/fff.h>
+#include <zephyr/ztest.h>
+
+#include <driver/amd_stb.h>
+#include <gpio.h>
+#include <gpio/gpio_int.h>
+
+ZTEST_SUITE(stb_dump, NULL, NULL, NULL, NULL, NULL);
+
+ZTEST(stb_dump, test_stb_dump)
+{
+	const struct gpio_dt_spec *ec_sfh_int =
+		GPIO_DT_FROM_NODELABEL(gpio_ec_sfh_int_h);
+	const struct gpio_dt_spec *sfh_ec_int =
+		GPIO_DT_FROM_NODELABEL(gpio_sfh_ec_int_h);
+	int rv;
+
+	gpio_enable_dt_interrupt(GPIO_INT_FROM_NODELABEL(int_stb_dump));
+	amd_stb_dump_init(ec_sfh_int, sfh_ec_int);
+
+	amd_stb_dump_trigger();
+	rv = gpio_emul_output_get(ec_sfh_int->port, ec_sfh_int->pin);
+	zassert_equal(rv, 1);
+	zassert_true(amd_stb_dump_in_progress());
+
+	rv = gpio_emul_input_set(sfh_ec_int->port, sfh_ec_int->pin, true);
+	zassert_ok(rv);
+	/* Give the interrupt handler plenty of time to run. */
+	k_msleep(10);
+	zassert_false(amd_stb_dump_in_progress());
+	rv = gpio_emul_output_get(ec_sfh_int->port, ec_sfh_int->pin);
+	zassert_equal(rv, 0);
+}
diff --git a/zephyr/test/amd/testcase.yaml b/zephyr/test/amd/testcase.yaml
new file mode 100644
index 0000000000..f124f8d9e2
--- /dev/null
+++ b/zephyr/test/amd/testcase.yaml
@@ -0,0 +1,10 @@
+# Copyright 2023 The ChromiumOS Authors
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+common:
+  platform_allow: native_posix
+tests:
+  amd.stb_dump:
+    extra_configs:
+      - CONFIG_TEST_AMD_STB_DUMP=y