drm/edid: Reshuffle mode list construction to closer match the spec
Also, document what the spec says to do. Signed-off-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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1 changed files with 16 additions and 2 deletions
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@ -1377,10 +1377,24 @@ int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid)
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quirks = edid_get_quirks(edid);
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num_modes += add_established_modes(connector, edid);
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num_modes += add_standard_modes(connector, edid);
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/*
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* EDID spec says modes should be preferred in this order:
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* - preferred detailed mode
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* - other detailed modes from base block
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* - detailed modes from extension blocks
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* - CVT 3-byte code modes
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* - standard timing codes
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* - established timing codes
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* - modes inferred from GTF or CVT range information
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*
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* We don't quite implement this yet, but we're close.
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*
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* XXX order for additional mode types in extension blocks?
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*/
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num_modes += add_detailed_info(connector, edid, quirks);
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num_modes += add_detailed_info_eedid(connector, edid, quirks);
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num_modes += add_standard_modes(connector, edid);
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num_modes += add_established_modes(connector, edid);
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if (quirks & (EDID_QUIRK_PREFER_LARGE_60 | EDID_QUIRK_PREFER_LARGE_75))
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edid_fixup_preferred(connector, quirks);
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