tests: drivers: build_all: smbus: add build-all suite for smbus drivers

To ensure that code compiles error (and warning) free, add a build-all
testsuite for smbus drivers.

Signed-off-by: Chris Friedt <cfriedt@tenstorrent.com>

Author: cfriedt

tests/drivers/build_all/smbus/CMakeLists.txt

@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.20.0)
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(build_all)
+
+FILE(GLOB app_sources src/*.c)
+target_sources(app PRIVATE ${app_sources})

tests/drivers/build_all/smbus/boards/qemu_cortex_m3.overlay

@@ -0,0 +1,23 @@
+/*
+ * SPDX-FileCopyrightText: Copyright The Zephyr Project Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/ {
+	i2c0: i2c@88888888 {
+		compatible = "zephyr,i2c-emul";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		reg = <0x88888888 0x10000>;
+		status = "okay";
+	};
+
+	smbus0: smbus@88898888 {
+		compatible = "st,stm32-smbus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		reg = <0x88898888 0x10000>;
+		i2c = <&i2c0>;
+		status = "okay";
+	};
+};

tests/drivers/build_all/smbus/prj.conf

@@ -0,0 +1,4 @@
+CONFIG_TEST=y
+CONFIG_TEST_USERSPACE=y
+CONFIG_I2C=y
+CONFIG_I2C_TARGET=y

tests/drivers/build_all/smbus/src/main.c

@@ -0,0 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: Copyright The Zephyr Project Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+int main(void)
+{
+	return 0;
+}

tests/drivers/build_all/smbus/testcase.yaml

@@ -0,0 +1,11 @@
+common:
+  build_only: true
+  tags:
+    - drivers
+    - i2c
+    - smbus
+tests:
+  drivers.smbus.build:
+    # will cover drivers without in-tree boards
+    platform_allow: qemu_cortex_m3
+    extra_args: "CONFIG_SMBUS=y"