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Date: Tue, 26 Mar 2024 16:40:07 +0100
From: Maxime Ripard <mripard@...nel.org>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>, 
 Daniel Vetter <daniel@...ll.ch>, Jonathan Corbet <corbet@....net>, 
 Sandy Huang <hjc@...k-chips.com>, 
 Heiko Stübner <heiko@...ech.de>, 
 Chen-Yu Tsai <wens@...e.org>, Jernej Skrabec <jernej.skrabec@...il.com>, 
 Samuel Holland <samuel@...lland.org>
Cc: Hans Verkuil <hverkuil@...all.nl>, 
 Sebastian Wick <sebastian.wick@...hat.com>, 
 Ville Syrjälä <ville.syrjala@...ux.intel.com>, 
 dri-devel@...ts.freedesktop.org, linux-arm-kernel@...ts.infradead.org, 
 linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org, 
 linux-sunxi@...ts.linux.dev, Maxime Ripard <mripard@...nel.org>, 
 Dave Stevenson <dave.stevenson@...pberrypi.com>
Subject: [PATCH v11 03/28] drm/tests: connector: Add tests for
 drmm_connector_hdmi_init

We just introduced a new initialization function for our connectors, so
let's build a kunit test suite for it as well.

Reviewed-by: Dave Stevenson <dave.stevenson@...pberrypi.com>
Signed-off-by: Maxime Ripard <mripard@...nel.org>
---
 drivers/gpu/drm/tests/drm_connector_test.c | 123 +++++++++++++++++++++++++++++
 1 file changed, 123 insertions(+)

diff --git a/drivers/gpu/drm/tests/drm_connector_test.c b/drivers/gpu/drm/tests/drm_connector_test.c
index 44f82ed2a958..261d4109946d 100644
--- a/drivers/gpu/drm/tests/drm_connector_test.c
+++ b/drivers/gpu/drm/tests/drm_connector_test.c
@@ -170,10 +170,132 @@ static struct kunit_suite drmm_connector_init_test_suite = {
 	.name = "drmm_connector_init",
 	.init = drm_test_connector_init,
 	.test_cases = drmm_connector_init_tests,
 };
 
+/*
+ * Test that the registration of a bog standard connector works as
+ * expected and doesn't report any error.
+ */
+static void drm_test_connector_hdmi_init_valid(struct kunit *test)
+{
+	struct drm_connector_init_priv *priv = test->priv;
+	int ret;
+
+	ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+				       &dummy_funcs,
+				       DRM_MODE_CONNECTOR_HDMIA,
+				       &priv->ddc);
+	KUNIT_EXPECT_EQ(test, ret, 0);
+}
+
+/*
+ * Test that the registration of a connector without a DDC adapter
+ * doesn't report any error.
+ */
+static void drm_test_connector_hdmi_init_null_ddc(struct kunit *test)
+{
+	struct drm_connector_init_priv *priv = test->priv;
+	int ret;
+
+	ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+				       &dummy_funcs,
+				       DRM_MODE_CONNECTOR_HDMIA,
+				       NULL);
+	KUNIT_EXPECT_EQ(test, ret, 0);
+}
+
+/*
+ * Test that the registration of an HDMI connector with an HDMI
+ * connector type succeeds.
+ */
+static void drm_test_connector_hdmi_init_type_valid(struct kunit *test)
+{
+	struct drm_connector_init_priv *priv = test->priv;
+	unsigned int connector_type = *(unsigned int *)test->param_value;
+	int ret;
+
+	ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+				       &dummy_funcs,
+				       connector_type,
+				       &priv->ddc);
+	KUNIT_EXPECT_EQ(test, ret, 0);
+}
+
+static const unsigned int drm_connector_hdmi_init_type_valid_tests[] = {
+	DRM_MODE_CONNECTOR_HDMIA,
+	DRM_MODE_CONNECTOR_HDMIB,
+};
+
+static void drm_connector_hdmi_init_type_desc(const unsigned int *type, char *desc)
+{
+	sprintf(desc, "%s", drm_get_connector_type_name(*type));
+}
+
+KUNIT_ARRAY_PARAM(drm_connector_hdmi_init_type_valid,
+		  drm_connector_hdmi_init_type_valid_tests,
+		  drm_connector_hdmi_init_type_desc);
+
+/*
+ * Test that the registration of an HDMI connector with an !HDMI
+ * connector type fails.
+ */
+static void drm_test_connector_hdmi_init_type_invalid(struct kunit *test)
+{
+	struct drm_connector_init_priv *priv = test->priv;
+	unsigned int connector_type = *(unsigned int *)test->param_value;
+	int ret;
+
+	ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+				       &dummy_funcs,
+				       connector_type,
+				       &priv->ddc);
+	KUNIT_EXPECT_LT(test, ret, 0);
+}
+
+static const unsigned int drm_connector_hdmi_init_type_invalid_tests[] = {
+	DRM_MODE_CONNECTOR_Unknown,
+	DRM_MODE_CONNECTOR_VGA,
+	DRM_MODE_CONNECTOR_DVII,
+	DRM_MODE_CONNECTOR_DVID,
+	DRM_MODE_CONNECTOR_DVIA,
+	DRM_MODE_CONNECTOR_Composite,
+	DRM_MODE_CONNECTOR_SVIDEO,
+	DRM_MODE_CONNECTOR_LVDS,
+	DRM_MODE_CONNECTOR_Component,
+	DRM_MODE_CONNECTOR_9PinDIN,
+	DRM_MODE_CONNECTOR_DisplayPort,
+	DRM_MODE_CONNECTOR_TV,
+	DRM_MODE_CONNECTOR_eDP,
+	DRM_MODE_CONNECTOR_VIRTUAL,
+	DRM_MODE_CONNECTOR_DSI,
+	DRM_MODE_CONNECTOR_DPI,
+	DRM_MODE_CONNECTOR_WRITEBACK,
+	DRM_MODE_CONNECTOR_SPI,
+	DRM_MODE_CONNECTOR_USB,
+};
+
+KUNIT_ARRAY_PARAM(drm_connector_hdmi_init_type_invalid,
+		  drm_connector_hdmi_init_type_invalid_tests,
+		  drm_connector_hdmi_init_type_desc);
+
+static struct kunit_case drmm_connector_hdmi_init_tests[] = {
+	KUNIT_CASE(drm_test_connector_hdmi_init_valid),
+	KUNIT_CASE(drm_test_connector_hdmi_init_null_ddc),
+	KUNIT_CASE_PARAM(drm_test_connector_hdmi_init_type_valid,
+			 drm_connector_hdmi_init_type_valid_gen_params),
+	KUNIT_CASE_PARAM(drm_test_connector_hdmi_init_type_invalid,
+			 drm_connector_hdmi_init_type_invalid_gen_params),
+	{ }
+};
+
+static struct kunit_suite drmm_connector_hdmi_init_test_suite = {
+	.name = "drmm_connector_hdmi_init",
+	.init = drm_test_connector_init,
+	.test_cases = drmm_connector_hdmi_init_tests,
+};
+
 struct drm_get_tv_mode_from_name_test {
 	const char *name;
 	enum drm_connector_tv_mode expected_mode;
 };
 
@@ -234,10 +356,11 @@ static struct kunit_suite drm_get_tv_mode_from_name_test_suite = {
 	.name = "drm_get_tv_mode_from_name",
 	.test_cases = drm_get_tv_mode_from_name_tests,
 };
 
 kunit_test_suites(
+	&drmm_connector_hdmi_init_test_suite,
 	&drmm_connector_init_test_suite,
 	&drm_get_tv_mode_from_name_test_suite
 );
 
 MODULE_AUTHOR("Maxime Ripard <maxime@...no.tech>");

-- 
2.44.0


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