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drm/msm/dp: always add fail-safe mode into connector mode list
[ Upstream commitd4aca42253
] Some of DP link compliant test expects to return fail-safe mode if prefer detailed timing mode can not be supported by mainlink's lane and rate after link training. Therefore add fail-safe mode into connector mode list as backup mode. This patch fixes test case 4.2.2.1. Changes in v2: -- add Fixes text string Fixes:4b85d405cf
( "drm/msm/dp: reduce link rate if failed at link training 1") Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Link: https://lore.kernel.org/r/1643066274-25814-1-git-send-email-quic_khsieh@quicinc.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -212,6 +212,11 @@ int dp_panel_read_sink_caps(struct dp_panel *dp_panel,
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if (drm_add_modes_noedid(connector, 640, 480))
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drm_set_preferred_mode(connector, 640, 480);
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mutex_unlock(&connector->dev->mode_config.mutex);
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} else {
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/* always add fail-safe mode as backup mode */
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mutex_lock(&connector->dev->mode_config.mutex);
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drm_add_modes_noedid(connector, 640, 480);
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mutex_unlock(&connector->dev->mode_config.mutex);
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}
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if (panel->aux_cfg_update_done) {
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