[PATCH i-g-t 08/39] lib/vkms: Test plane default values

[José Expósito]

Add a helper to get the plane type and test that the default type is set
when a new plane is created.

Signed-off-by: José Expósito <jose.exposito89 at gmail.com>
---
 lib/igt_vkms.c             | 19 +++++++++++++++++++
 lib/igt_vkms.h             |  1 +
 tests/vkms/vkms_configfs.c | 21 +++++++++++++++++++++
 3 files changed, 41 insertions(+)

diff --git a/lib/igt_vkms.c b/lib/igt_vkms.c
index a7b395a71..5cfe5123c 100644
--- a/lib/igt_vkms.c
+++ b/lib/igt_vkms.c
@@ -23,6 +23,7 @@
 
 #define VKMS_ROOT_DIR_NAME		"vkms"
 #define VKMS_FILE_ENABLED		"enabled"
+#define VKMS_FILE_PLANE_TYPE		"type"
 
 enum vkms_pipeline_item {
 	VKMS_PIPELINE_ITEM_PLANE,
@@ -321,3 +322,21 @@ void igt_vkms_device_add_plane(igt_vkms_t *dev, const char *name)
 {
 	add_pipeline_item(dev, VKMS_PIPELINE_ITEM_PLANE, name);
 }
+
+/**
+ * igt_vkms_plane_get_type:
+ * @dev: Device the plane belongs to
+ * @name: Plane name
+ *
+ * Return the plane type.
+ */
+int igt_vkms_plane_get_type(igt_vkms_t *dev, const char *name)
+{
+	char path[PATH_MAX];
+
+	snprintf(path, sizeof(path), "%s/%s/%s/%s", dev->path,
+		 get_pipeline_item_dir_name(VKMS_PIPELINE_ITEM_PLANE), name,
+		 VKMS_FILE_PLANE_TYPE);
+
+	return read_int(path);
+}
diff --git a/lib/igt_vkms.h b/lib/igt_vkms.h
index 9e16ae7eb..dd06d8f5b 100644
--- a/lib/igt_vkms.h
+++ b/lib/igt_vkms.h
@@ -30,5 +30,6 @@ bool igt_vkms_device_is_enabled(igt_vkms_t *dev);
 void igt_vkms_device_set_enabled(igt_vkms_t *dev, bool enabled);
 
 void igt_vkms_device_add_plane(igt_vkms_t *dev, const char *name);
+int igt_vkms_plane_get_type(igt_vkms_t *dev, const char *name);
 
 #endif /* __IGT_VKMS_H__ */
diff --git a/tests/vkms/vkms_configfs.c b/tests/vkms/vkms_configfs.c
index ec334641f..a3fa60762 100644
--- a/tests/vkms/vkms_configfs.c
+++ b/tests/vkms/vkms_configfs.c
@@ -202,6 +202,26 @@ static void test_plane_default_files(void)
 	igt_vkms_device_destroy(dev);
 }
 
+/**
+ * SUBTEST: plane-default-values
+ * Description: Check that the default values for the plane are correct.
+ */
+
+static void test_plane_default_values(void)
+{
+	igt_vkms_t *dev;
+
+	dev = igt_vkms_device_create(__func__);
+	igt_assert(dev);
+
+	igt_vkms_device_add_plane(dev, "plane0");
+
+	igt_assert_eq(igt_vkms_plane_get_type(dev, "plane0"),
+		      DRM_PLANE_TYPE_OVERLAY);
+
+	igt_vkms_device_destroy(dev);
+}
+
 igt_main
 {
 	struct {
@@ -212,6 +232,7 @@ igt_main
 		{ "device-default-values", test_device_default_values },
 		{ "device-wrong-values", test_device_wrong_values },
 		{ "plane-default-files", test_plane_default_files },
+		{ "plane-default-values", test_plane_default_values },
 	};
 
 	igt_fixture {
-- 
2.48.1