tests: drivers: build_all: split gpio test out

Move gpio tests to their own directory.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>

tests/drivers/build_all/gpio/CMakeLists.txt

@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.13.1)
+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/gpio/app.overlay

@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2020, Linaro Ltd.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Application overlay for testing driver builds
+ *
+ * Names in this file should be chosen in a way that won't conflict
+ * with real-world devicetree nodes, to allow these tests to run on
+ * (and be extended to test) real hardware.
+ */
+
+/ {
+	test {
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		test_gpio: gpio@deadbeef {
+			compatible = "vnd,gpio";
+			gpio-controller;
+			reg = <0xdeadbeef 0x1000>;
+			#gpio-cells = <0x2>;
+			label = "TEST_GPIO_1";
+			status = "okay";
+		};
+
+		test_i2c: i2c@11112222 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "vnd,i2c";
+			reg = <0x11112222 0x1000>;
+			label = "TEST_I2C_CTLR";
+			status = "okay";
+			clock-frequency = <100000>;
+
+			test_i2c_sx1509b: sx1509b@0 {
+				compatible = "semtech,sx1509b";
+				label = "SX1509B";
+				reg = <0x0>;
+				#gpio-cells = <2>;
+				ngpios = <16>;
+				gpio-controller;
+			};
+
+			test_i2c_pcal6408a: pcal6408a@1 {
+				compatible = "nxp,pcal6408a";
+				label = "PCAL6408A";
+				reg = <0x1>;
+				gpio-controller;
+				#gpio-cells = <2>;
+				ngpios = <8>;
+				int-gpios = <&test_gpio 0 0>;
+				reset-gpios = <&test_gpio 0 0>;
+			};
+
+			test_i2c_pca95xx: pca95xx@2 {
+				compatible = "nxp,pca95xx";
+				label = "PCA95XX";
+				reg = <0x2>;
+				/* has-pud; */
+				#gpio-cells = <2>;
+				gpio-controller;
+			};
+		};
+
+		test_spi: spi@33334444 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "vnd,spi";
+			reg = <0x33334444 0x1000>;
+			label = "TEST_SPI_CTLR";
+			status = "okay";
+			clock-frequency = <2000000>;
+
+			/* one entry for every devices at spi.dtsi */
+			cs-gpios = <&test_gpio 0 0>;
+
+			test_spi_mcp23s17: mcp23s17@0 {
+				compatible = "microchip,mcp23s17";
+				label = "GPIO_E0";
+				spi-max-frequency = <0>;
+				reg = <0x0>;
+				gpio-controller;
+				#gpio-cells = <2>;
+				ngpios = <16>;
+			};
+		};
+	};
+};

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

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2012-2014 Wind River Systems, Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr.h>
+#include <sys/printk.h>
+#include <device.h>
+
+
+/*
+ * @file
+ * @brief Hello World demo
+ */
+
+
+void main(void)
+{
+	printk("Hello World!\n");
+}
+
+#if DT_NODE_EXISTS(DT_INST(0, vnd_gpio))
+/* Fake GPIO device, needed for building drivers that use DEVICE_DT_GET()
+ * to access GPIO controllers.
+ */
+DEVICE_DT_DEFINE(DT_INST(0, vnd_gpio), NULL, NULL, NULL, NULL,
+		 POST_KERNEL, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT, NULL);
+#endif

tests/drivers/build_all/gpio/testcase.yaml

@@ -0,0 +1,8 @@
+common:
+  build_only: true
+  tags: drivers
+tests:
+  drivers.gpio.build:
+    min_ram: 32
+    platform_exclude: serpente
+    depends_on: gpio spi i2c

tests/drivers/build_all/testcase.yaml

@@ -1,12 +1,6 @@
 common:
   depends_on: gpio spi i2c
 tests:
-  drivers.gpio.build:
-    build_only: true
-    extra_args: CONF_FILE=gpio.conf
-    min_ram: 32
-    platform_exclude: serpente
-    depends_on: gpio spi
   drivers.led.build:
     build_only: true
     extra_args: CONF_FILE=led.conf