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Message-Id: <20250109-hdmi-conn-null-mode-v2-2-9eeaf1109547@collabora.com>
Date: Thu, 09 Jan 2025 00:03:40 +0200
From: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
Dave Stevenson <dave.stevenson@...pberrypi.com>,
Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc: kernel@...labora.com, dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org
Subject: [PATCH v2 2/2] drm/tests: hdmi: Add connector's CRTC deactivation
tests
Following up a fixed bug in drm_atomic_helper_connector_hdmi_check(),
discovered while unloading a DRM module, add a couple of tests to make
sure the helper will not exhibit any abnormal behaviour for use cases
that involve shutting down the connector's CRTC.
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
---
drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 173 +++++++++++++++++++++
1 file changed, 173 insertions(+)
diff --git a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
index c3b693bb966f1f8b04066d19f520bfa4bf11c23d..98187ecee5d77b5f758af29f4c4bfddbd1f658fd 100644
--- a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
+++ b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
@@ -1568,6 +1568,177 @@ static void drm_test_check_output_bpc_format_display_8bpc_only(struct kunit *tes
KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_format, HDMI_COLORSPACE_RGB);
}
+/*
+ * Test that if we deactivate connector's CRTC, we trigger a mode change
+ * on that CRTC, along with setting {connectors|active}_changed.
+ */
+static void drm_test_check_crtc_deactivate_mode_changed(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_modeset_acquire_ctx *ctx;
+ struct drm_connector_state *old_conn_state;
+ struct drm_connector_state *new_conn_state;
+ struct drm_crtc_state *old_crtc_state;
+ struct drm_crtc_state *new_crtc_state;
+ struct drm_atomic_state *state;
+ struct drm_display_mode *preferred;
+ struct drm_connector *conn;
+ struct drm_device *drm;
+ struct drm_crtc *crtc;
+ int ret;
+
+ priv = drm_kunit_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ conn = &priv->connector;
+ KUNIT_ASSERT_TRUE(test, conn->display_info.is_hdmi);
+
+ ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ preferred = find_preferred_mode(conn);
+ KUNIT_ASSERT_NOT_NULL(test, preferred);
+
+ drm = &priv->drm;
+ crtc = priv->crtc;
+ ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
+
+ new_conn_state = drm_atomic_get_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, new_conn_state);
+
+ old_conn_state = drm_atomic_get_old_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, old_conn_state);
+
+ new_crtc_state = drm_atomic_get_crtc_state(state, crtc);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, new_crtc_state);
+
+ old_crtc_state = drm_atomic_get_old_crtc_state(state, crtc);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, old_crtc_state);
+
+ ret = drm_atomic_set_mode_for_crtc(new_crtc_state, NULL);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+ KUNIT_ASSERT_NE(test, old_crtc_state->enable, new_crtc_state->enable);
+
+ new_crtc_state->active = false;
+ KUNIT_ASSERT_NE(test, old_crtc_state->active, new_crtc_state->active);
+
+ ret = drm_atomic_set_crtc_for_connector(new_conn_state, NULL);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ KUNIT_ASSERT_PTR_NE(test, old_conn_state->crtc, new_conn_state->crtc);
+
+ ret = drm_atomic_check_only(state);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, new_crtc_state);
+ KUNIT_EXPECT_TRUE(test, new_crtc_state->mode_changed);
+ KUNIT_EXPECT_TRUE(test, new_crtc_state->connectors_changed);
+ KUNIT_EXPECT_TRUE(test, new_crtc_state->active_changed);
+}
+
+/*
+ * Test that if we deactivate connector's CRTC, while changing the max
+ * bpc property to a different value, will not have any effect on the
+ * output bpc property. However, we still trigger a mode change on that
+ * CRTC, along with setting {connectors|active}_changed.
+ */
+static void drm_test_check_crtc_deactivate_output_bpc_not_changed(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_modeset_acquire_ctx *ctx;
+ struct drm_connector_state *old_conn_state;
+ struct drm_connector_state *new_conn_state;
+ struct drm_crtc_state *old_crtc_state;
+ struct drm_crtc_state *new_crtc_state;
+ struct drm_atomic_state *state;
+ struct drm_display_mode *preferred;
+ struct drm_connector *conn;
+ struct drm_device *drm;
+ struct drm_crtc *crtc;
+ int ret;
+
+ priv = drm_kunit_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 10);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ conn = &priv->connector;
+ ret = set_connector_edid(test, conn,
+ test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz,
+ ARRAY_SIZE(test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz));
+ KUNIT_ASSERT_GT(test, ret, 0);
+
+ ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ preferred = find_preferred_mode(conn);
+ KUNIT_ASSERT_NOT_NULL(test, preferred);
+
+ drm = &priv->drm;
+ crtc = priv->crtc;
+ ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
+
+ new_conn_state = drm_atomic_get_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, new_conn_state);
+
+ old_conn_state = drm_atomic_get_old_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, old_conn_state);
+
+ new_conn_state->max_requested_bpc = 8;
+
+ KUNIT_ASSERT_NE(test,
+ old_conn_state->max_requested_bpc,
+ new_conn_state->max_requested_bpc);
+
+ new_crtc_state = drm_atomic_get_crtc_state(state, crtc);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, new_crtc_state);
+
+ old_crtc_state = drm_atomic_get_old_crtc_state(state, crtc);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, old_crtc_state);
+
+ ret = drm_atomic_set_mode_for_crtc(new_crtc_state, NULL);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+ KUNIT_ASSERT_NE(test, old_crtc_state->enable, new_crtc_state->enable);
+
+ new_crtc_state->active = false;
+ KUNIT_ASSERT_NE(test, old_crtc_state->active, new_crtc_state->active);
+
+ ret = drm_atomic_set_crtc_for_connector(new_conn_state, NULL);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ KUNIT_ASSERT_PTR_NE(test, old_conn_state->crtc, new_conn_state->crtc);
+
+ ret = drm_atomic_check_only(state);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ old_conn_state = drm_atomic_get_old_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, old_conn_state);
+
+ new_conn_state = drm_atomic_get_new_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, new_conn_state);
+
+ KUNIT_EXPECT_EQ(test,
+ old_conn_state->hdmi.output_bpc,
+ new_conn_state->hdmi.output_bpc);
+
+ new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, new_crtc_state);
+ KUNIT_EXPECT_TRUE(test, new_crtc_state->mode_changed);
+ KUNIT_EXPECT_TRUE(test, new_crtc_state->connectors_changed);
+ KUNIT_EXPECT_TRUE(test, new_crtc_state->active_changed);
+}
+
static struct kunit_case drm_atomic_helper_connector_hdmi_check_tests[] = {
KUNIT_CASE(drm_test_check_broadcast_rgb_auto_cea_mode),
KUNIT_CASE(drm_test_check_broadcast_rgb_auto_cea_mode_vic_1),
@@ -1596,6 +1767,8 @@ static struct kunit_case drm_atomic_helper_connector_hdmi_check_tests[] = {
KUNIT_CASE(drm_test_check_tmds_char_rate_rgb_8bpc),
KUNIT_CASE(drm_test_check_tmds_char_rate_rgb_10bpc),
KUNIT_CASE(drm_test_check_tmds_char_rate_rgb_12bpc),
+ KUNIT_CASE(drm_test_check_crtc_deactivate_mode_changed),
+ KUNIT_CASE(drm_test_check_crtc_deactivate_output_bpc_not_changed),
/*
* TODO: We should have tests to check that a change in the
* format triggers a CRTC mode change just like we do for the
--
2.47.1
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