On Fri, Jan 10, 2025 at 04:48:21PM +0800, Liu Ying wrote:
> Atomic check should succeed when disabling a connector. Add a test
> case drm_test_check_disabling_connector() to make sure of this.
>
> Suggested-by: Dmitry Baryshkov <dmitry.barysh...@linaro.org>
> Signed-off-by: Liu Ying <victor....@nxp.com>
> ---
> v2:
> * New patch to add the test case. (Dmitry)
>
> .../drm/tests/drm_hdmi_state_helper_test.c | 52 +++++++++++++++++++
> 1 file changed, 52 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 c3b693bb966f..8f7a39c9a1bb 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 +1568,57 @@ 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 atomic check succeeds when disabling a connector. */
> +static void drm_test_check_disabling_connector(struct kunit *test)
> +{
> + struct drm_atomic_helper_connector_hdmi_priv *priv;
> + struct drm_modeset_acquire_ctx *ctx;
> + struct drm_connector_state *conn_state;
> + struct drm_crtc_state *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);
> +
> + ctx = drm_kunit_helper_acquire_ctx_alloc(test);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
> +
> + conn = &priv->connector;
> + 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);
> +
> + crtc_state = drm_atomic_get_crtc_state(state, crtc);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_state);
> +
> + crtc_state->active = false;
> + ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL);
> + KUNIT_EXPECT_EQ(test, ret, 0);
> +
> + conn_state = drm_atomic_get_connector_state(state, conn);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state);
> +
> + ret = drm_atomic_set_crtc_for_connector(conn_state, NULL);
> + KUNIT_EXPECT_EQ(test, ret, 0);
> +
> + ret = drm_atomic_check_only(state);
> + KUNIT_ASSERT_EQ(test, ret, 0);
> +}
> +
> 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),
> @@ -1605,6 +1656,7 @@ static struct kunit_case
> drm_atomic_helper_connector_hdmi_check_tests[] = {
> * picked up aside from changing the BPC or mode which would
> * already trigger a mode change.
> */
> + KUNIT_CASE(drm_test_check_disabling_connector),I've changed slightly that test name (s/disabling/disable/) to make it consistent with the rest when applying, and ordered it alphabetically. Thanks! Maxime
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