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git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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drm/display: hdmi: add generic mode_valid helper
Add drm_hdmi_connector_mode_valid(), generic helper for HDMI connectors. It can be either used directly or as a part of the .mode_valid callback. Reviewed-by: Maxime Ripard <mripard@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20241130-hdmi-mode-valid-v5-4-742644ec3b1f@linaro.org Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
This commit is contained in:
Dmitry Baryshkov
parent
a8403be6ee
commit
47368ab437
4 changed files with 302 additions and 5 deletions
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@ -521,6 +521,27 @@ int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector,
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}
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}
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EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_check);
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EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_check);
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/**
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* drm_hdmi_connector_mode_valid() - Check if mode is valid for HDMI connector
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* @connector: DRM connector to validate the mode
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* @mode: Display mode to validate
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*
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* Generic .mode_valid implementation for HDMI connectors.
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*/
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enum drm_mode_status
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drm_hdmi_connector_mode_valid(struct drm_connector *connector,
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struct drm_display_mode *mode)
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{
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unsigned long long clock;
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clock = drm_hdmi_compute_mode_clock(mode, 8, HDMI_COLORSPACE_RGB);
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if (!clock)
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return MODE_ERROR;
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return hdmi_clock_valid(connector, mode, clock);
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}
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EXPORT_SYMBOL(drm_hdmi_connector_mode_valid);
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static int clear_device_infoframe(struct drm_connector *connector,
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static int clear_device_infoframe(struct drm_connector *connector,
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enum hdmi_infoframe_type type)
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enum hdmi_infoframe_type type)
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{
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{
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@ -124,6 +124,18 @@ static const struct drm_connector_hdmi_funcs reject_connector_hdmi_funcs = {
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.tmds_char_rate_valid = reject_connector_tmds_char_rate_valid,
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.tmds_char_rate_valid = reject_connector_tmds_char_rate_valid,
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};
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};
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static enum drm_mode_status
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reject_100MHz_connector_tmds_char_rate_valid(const struct drm_connector *connector,
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const struct drm_display_mode *mode,
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unsigned long long tmds_rate)
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{
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return (tmds_rate > 100ULL * 1000 * 1000) ? MODE_BAD : MODE_OK;
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}
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static const struct drm_connector_hdmi_funcs reject_100_MHz_connector_hdmi_funcs = {
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.tmds_char_rate_valid = reject_100MHz_connector_tmds_char_rate_valid,
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};
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static int dummy_connector_get_modes(struct drm_connector *connector)
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static int dummy_connector_get_modes(struct drm_connector *connector)
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{
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{
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struct drm_atomic_helper_connector_hdmi_priv *priv =
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struct drm_atomic_helper_connector_hdmi_priv *priv =
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@ -146,6 +158,7 @@ static int dummy_connector_get_modes(struct drm_connector *connector)
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static const struct drm_connector_helper_funcs dummy_connector_helper_funcs = {
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static const struct drm_connector_helper_funcs dummy_connector_helper_funcs = {
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.atomic_check = drm_atomic_helper_connector_hdmi_check,
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.atomic_check = drm_atomic_helper_connector_hdmi_check,
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.get_modes = dummy_connector_get_modes,
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.get_modes = dummy_connector_get_modes,
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.mode_valid = drm_hdmi_connector_mode_valid,
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};
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};
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static void dummy_hdmi_connector_reset(struct drm_connector *connector)
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static void dummy_hdmi_connector_reset(struct drm_connector *connector)
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@ -163,9 +176,10 @@ static const struct drm_connector_funcs dummy_connector_funcs = {
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static
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static
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struct drm_atomic_helper_connector_hdmi_priv *
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struct drm_atomic_helper_connector_hdmi_priv *
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drm_kunit_helper_connector_hdmi_init(struct kunit *test,
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drm_kunit_helper_connector_hdmi_init_funcs(struct kunit *test,
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unsigned int formats,
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unsigned int formats,
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unsigned int max_bpc)
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unsigned int max_bpc,
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const struct drm_connector_hdmi_funcs *hdmi_funcs)
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{
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{
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struct drm_atomic_helper_connector_hdmi_priv *priv;
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struct drm_atomic_helper_connector_hdmi_priv *priv;
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struct drm_connector *conn;
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struct drm_connector *conn;
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@ -207,7 +221,7 @@ drm_kunit_helper_connector_hdmi_init(struct kunit *test,
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ret = drmm_connector_hdmi_init(drm, conn,
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ret = drmm_connector_hdmi_init(drm, conn,
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"Vendor", "Product",
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"Vendor", "Product",
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&dummy_connector_funcs,
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&dummy_connector_funcs,
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&dummy_connector_hdmi_funcs,
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hdmi_funcs,
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DRM_MODE_CONNECTOR_HDMIA,
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DRM_MODE_CONNECTOR_HDMIA,
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NULL,
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NULL,
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formats,
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formats,
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@ -219,7 +233,24 @@ drm_kunit_helper_connector_hdmi_init(struct kunit *test,
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drm_mode_config_reset(drm);
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drm_mode_config_reset(drm);
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ret = set_connector_edid(test, conn,
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return priv;
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}
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static
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struct drm_atomic_helper_connector_hdmi_priv *
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drm_kunit_helper_connector_hdmi_init(struct kunit *test,
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unsigned int formats,
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unsigned int max_bpc)
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{
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struct drm_atomic_helper_connector_hdmi_priv *priv;
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int ret;
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priv = drm_kunit_helper_connector_hdmi_init_funcs(test,
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formats, max_bpc,
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&dummy_connector_hdmi_funcs);
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv);
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ret = set_connector_edid(test, &priv->connector,
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test_edid_hdmi_1080p_rgb_max_200mhz,
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test_edid_hdmi_1080p_rgb_max_200mhz,
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ARRAY_SIZE(test_edid_hdmi_1080p_rgb_max_200mhz));
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ARRAY_SIZE(test_edid_hdmi_1080p_rgb_max_200mhz));
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KUNIT_ASSERT_GT(test, ret, 0);
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KUNIT_ASSERT_GT(test, ret, 0);
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@ -1733,9 +1764,148 @@ static struct kunit_suite drm_atomic_helper_connector_hdmi_reset_test_suite = {
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.test_cases = drm_atomic_helper_connector_hdmi_reset_tests,
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.test_cases = drm_atomic_helper_connector_hdmi_reset_tests,
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};
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};
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/*
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* Test that the default behaviour for drm_hdmi_connector_mode_valid() is not
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* to reject any modes. Pass a correct EDID and verify that preferred mode
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* matches the expectations (1080p).
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*/
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static void drm_test_check_mode_valid(struct kunit *test)
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{
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struct drm_atomic_helper_connector_hdmi_priv *priv;
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struct drm_connector *conn;
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struct drm_display_mode *preferred;
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priv = drm_kunit_helper_connector_hdmi_init(test,
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BIT(HDMI_COLORSPACE_RGB),
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8);
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KUNIT_ASSERT_NOT_NULL(test, priv);
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conn = &priv->connector;
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preferred = find_preferred_mode(conn);
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KUNIT_ASSERT_NOT_NULL(test, preferred);
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KUNIT_EXPECT_EQ(test, preferred->hdisplay, 1920);
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KUNIT_EXPECT_EQ(test, preferred->vdisplay, 1080);
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KUNIT_EXPECT_EQ(test, preferred->clock, 148500);
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}
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/*
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* Test that the drm_hdmi_connector_mode_valid() will reject modes depending on
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* the .tmds_char_rate_valid() behaviour.
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* Pass a correct EDID and verify that high-rate modes are filtered.
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*/
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static void drm_test_check_mode_valid_reject_rate(struct kunit *test)
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{
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struct drm_atomic_helper_connector_hdmi_priv *priv;
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struct drm_connector *conn;
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struct drm_display_mode *preferred;
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int ret;
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priv = drm_kunit_helper_connector_hdmi_init_funcs(test,
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BIT(HDMI_COLORSPACE_RGB),
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8,
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&reject_100_MHz_connector_hdmi_funcs);
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KUNIT_ASSERT_NOT_NULL(test, priv);
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conn = &priv->connector;
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ret = set_connector_edid(test, conn,
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test_edid_hdmi_1080p_rgb_max_200mhz,
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ARRAY_SIZE(test_edid_hdmi_1080p_rgb_max_200mhz));
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KUNIT_ASSERT_GT(test, ret, 0);
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/*
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* Unlike the drm_test_check_mode_valid() here 1080p is rejected, but
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* 480p is allowed.
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*/
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preferred = find_preferred_mode(conn);
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KUNIT_ASSERT_NOT_NULL(test, preferred);
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KUNIT_EXPECT_EQ(test, preferred->hdisplay, 640);
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KUNIT_EXPECT_EQ(test, preferred->vdisplay, 480);
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KUNIT_EXPECT_EQ(test, preferred->clock, 25200);
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}
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/*
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* Test that the drm_hdmi_connector_mode_valid() will not mark any modes as
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* valid if .tmds_char_rate_valid() rejects all of them. Pass a correct EDID
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* and verify that there is no preferred mode and no modes were set for the
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* connector.
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*/
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static void drm_test_check_mode_valid_reject(struct kunit *test)
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{
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struct drm_atomic_helper_connector_hdmi_priv *priv;
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struct drm_connector *conn;
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struct drm_display_mode *preferred;
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int ret;
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priv = drm_kunit_helper_connector_hdmi_init_funcs(test,
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BIT(HDMI_COLORSPACE_RGB),
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8,
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&reject_connector_hdmi_funcs);
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KUNIT_ASSERT_NOT_NULL(test, priv);
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conn = &priv->connector;
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/* should reject all modes */
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ret = set_connector_edid(test, conn,
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test_edid_hdmi_1080p_rgb_max_200mhz,
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ARRAY_SIZE(test_edid_hdmi_1080p_rgb_max_200mhz));
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KUNIT_ASSERT_EQ(test, ret, 0);
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preferred = find_preferred_mode(conn);
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KUNIT_ASSERT_NULL(test, preferred);
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}
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/*
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* Test that the drm_hdmi_connector_mode_valid() will reject modes that don't
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* pass the info.max_tmds_clock filter. Pass crafted EDID and verify that
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* high-rate modes are filtered.
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*/
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static void drm_test_check_mode_valid_reject_max_clock(struct kunit *test)
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{
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struct drm_atomic_helper_connector_hdmi_priv *priv;
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struct drm_connector *conn;
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struct drm_display_mode *preferred;
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int ret;
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priv = drm_kunit_helper_connector_hdmi_init(test,
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BIT(HDMI_COLORSPACE_RGB),
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8);
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KUNIT_ASSERT_NOT_NULL(test, priv);
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conn = &priv->connector;
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ret = set_connector_edid(test, conn,
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test_edid_hdmi_1080p_rgb_max_100mhz,
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ARRAY_SIZE(test_edid_hdmi_1080p_rgb_max_100mhz));
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KUNIT_ASSERT_GT(test, ret, 0);
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KUNIT_ASSERT_EQ(test, conn->display_info.max_tmds_clock, 100 * 1000);
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preferred = find_preferred_mode(conn);
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KUNIT_ASSERT_NOT_NULL(test, preferred);
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KUNIT_EXPECT_EQ(test, preferred->hdisplay, 640);
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KUNIT_EXPECT_EQ(test, preferred->vdisplay, 480);
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KUNIT_EXPECT_EQ(test, preferred->clock, 25200);
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}
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static struct kunit_case drm_atomic_helper_connector_hdmi_mode_valid_tests[] = {
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KUNIT_CASE(drm_test_check_mode_valid),
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KUNIT_CASE(drm_test_check_mode_valid_reject),
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KUNIT_CASE(drm_test_check_mode_valid_reject_rate),
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KUNIT_CASE(drm_test_check_mode_valid_reject_max_clock),
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{ }
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};
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static struct kunit_suite drm_atomic_helper_connector_hdmi_mode_valid_test_suite = {
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.name = "drm_atomic_helper_connector_hdmi_mode_valid",
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.test_cases = drm_atomic_helper_connector_hdmi_mode_valid_tests,
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};
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kunit_test_suites(
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kunit_test_suites(
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&drm_atomic_helper_connector_hdmi_check_test_suite,
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&drm_atomic_helper_connector_hdmi_check_test_suite,
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&drm_atomic_helper_connector_hdmi_reset_test_suite,
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&drm_atomic_helper_connector_hdmi_reset_test_suite,
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&drm_atomic_helper_connector_hdmi_mode_valid_test_suite,
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);
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);
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MODULE_AUTHOR("Maxime Ripard <mripard@kernel.org>");
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MODULE_AUTHOR("Maxime Ripard <mripard@kernel.org>");
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@ -61,6 +61,108 @@ static const unsigned char test_edid_dvi_1080p[] = {
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xab
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xab
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};
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};
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/*
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* edid-decode (hex):
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*
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* 00 ff ff ff ff ff ff 00 31 d8 2a 00 00 00 00 00
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* 00 21 01 03 81 a0 5a 78 02 00 00 00 00 00 00 00
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* 00 00 00 20 00 00 01 01 01 01 01 01 01 01 01 01
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* 01 01 01 01 01 01 02 3a 80 18 71 38 2d 40 58 2c
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* 45 00 40 84 63 00 00 1e 00 00 00 fc 00 54 65 73
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* 74 20 45 44 49 44 0a 20 20 20 00 00 00 fd 00 32
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* 46 1e 46 0f 00 0a 20 20 20 20 20 20 00 00 00 10
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* 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 92
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*
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* 02 03 1b 81 e3 05 00 20 41 10 e2 00 4a 6d 03 0c
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* 00 12 34 00 14 20 00 00 00 00 00 00 00 00 00 00
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* 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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* 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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* 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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* 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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* 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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* 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 e4
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*
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* ----------------
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*
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* Block 0, Base EDID:
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* EDID Structure Version & Revision: 1.3
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* Vendor & Product Identification:
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* Manufacturer: LNX
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* Model: 42
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* Made in: 2023
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* Basic Display Parameters & Features:
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* Digital display
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* DFP 1.x compatible TMDS
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* Maximum image size: 160 cm x 90 cm
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* Gamma: 2.20
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* Monochrome or grayscale display
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* First detailed timing is the preferred timing
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* Color Characteristics:
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* Red : 0.0000, 0.0000
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* Green: 0.0000, 0.0000
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* Blue : 0.0000, 0.0000
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* White: 0.0000, 0.0000
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* Established Timings I & II:
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* DMT 0x04: 640x480 59.940476 Hz 4:3 31.469 kHz 25.175000 MHz
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* Standard Timings: none
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* Detailed Timing Descriptors:
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* DTD 1: 1920x1080 60.000000 Hz 16:9 67.500 kHz 148.500000 MHz (1600 mm x 900 mm)
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* Hfront 88 Hsync 44 Hback 148 Hpol P
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* Vfront 4 Vsync 5 Vback 36 Vpol P
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* Display Product Name: 'Test EDID'
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* Display Range Limits:
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* Monitor ranges (GTF): 50-70 Hz V, 30-70 kHz H, max dotclock 150 MHz
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* Dummy Descriptor:
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* Extension blocks: 1
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* Checksum: 0x92
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*
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* ----------------
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*
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* Block 1, CTA-861 Extension Block:
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* Revision: 3
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* Underscans IT Video Formats by default
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* Native detailed modes: 1
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* Colorimetry Data Block:
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* sRGB
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* Video Data Block:
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||||||
|
* VIC 16: 1920x1080 60.000000 Hz 16:9 67.500 kHz 148.500000 MHz
|
||||||
|
* Video Capability Data Block:
|
||||||
|
* YCbCr quantization: No Data
|
||||||
|
* RGB quantization: Selectable (via AVI Q)
|
||||||
|
* PT scan behavior: No Data
|
||||||
|
* IT scan behavior: Always Underscanned
|
||||||
|
* CE scan behavior: Always Underscanned
|
||||||
|
* Vendor-Specific Data Block (HDMI), OUI 00-0C-03:
|
||||||
|
* Source physical address: 1.2.3.4
|
||||||
|
* Maximum TMDS clock: 100 MHz
|
||||||
|
* Extended HDMI video details:
|
||||||
|
* Checksum: 0xe4 Unused space in Extension Block: 100 bytes
|
||||||
|
*/
|
||||||
|
static const unsigned char test_edid_hdmi_1080p_rgb_max_100mhz[] = {
|
||||||
|
0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x31, 0xd8, 0x2a, 0x00,
|
||||||
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x21, 0x01, 0x03, 0x81, 0xa0, 0x5a, 0x78,
|
||||||
|
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20,
|
||||||
|
0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
|
||||||
|
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x3a, 0x80, 0x18, 0x71, 0x38,
|
||||||
|
0x2d, 0x40, 0x58, 0x2c, 0x45, 0x00, 0x40, 0x84, 0x63, 0x00, 0x00, 0x1e,
|
||||||
|
0x00, 0x00, 0x00, 0xfc, 0x00, 0x54, 0x65, 0x73, 0x74, 0x20, 0x45, 0x44,
|
||||||
|
0x49, 0x44, 0x0a, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x32,
|
||||||
|
0x46, 0x00, 0x00, 0xc4, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
|
||||||
|
0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||||
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x41, 0x02, 0x03, 0x1b, 0x81,
|
||||||
|
0xe3, 0x05, 0x00, 0x20, 0x41, 0x10, 0xe2, 0x00, 0x4a, 0x6d, 0x03, 0x0c,
|
||||||
|
0x00, 0x12, 0x34, 0x00, 0x14, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||||
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||||
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||||
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||||
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||||
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||||
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||||
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||||
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||||
|
0x00, 0x00, 0x00, 0xe4
|
||||||
|
};
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* edid-decode (hex):
|
* edid-decode (hex):
|
||||||
*
|
*
|
||||||
|
|
|
||||||
|
|
@ -20,4 +20,8 @@ int drm_atomic_helper_connector_hdmi_clear_audio_infoframe(struct drm_connector
|
||||||
int drm_atomic_helper_connector_hdmi_update_infoframes(struct drm_connector *connector,
|
int drm_atomic_helper_connector_hdmi_update_infoframes(struct drm_connector *connector,
|
||||||
struct drm_atomic_state *state);
|
struct drm_atomic_state *state);
|
||||||
|
|
||||||
|
enum drm_mode_status
|
||||||
|
drm_hdmi_connector_mode_valid(struct drm_connector *connector,
|
||||||
|
struct drm_display_mode *mode);
|
||||||
|
|
||||||
#endif // DRM_HDMI_STATE_HELPER_H_
|
#endif // DRM_HDMI_STATE_HELPER_H_
|
||||||
|
|
|
||||||
Loading…
Add table
Reference in a new issue