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drm/edid: Reshuffle mode list construction to closer match the spec

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Also, document what the spec says to do.

Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Adam Jackson 2010-03-29 21:43:21 +00:00 committed by Dave Airlie
parent 2b470ab075
commit c867df7043
1 changed files with 16 additions and 2 deletions
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18
drivers/gpu/drm/drm_edid.c
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@ -1377,10 +1377,24 @@ int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid)
quirks = edid_get_quirks(edid);
num_modes += add_established_modes(connector, edid);
num_modes += add_standard_modes(connector, edid);
/*
* EDID spec says modes should be preferred in this order:
* - preferred detailed mode
* - other detailed modes from base block
* - detailed modes from extension blocks
* - CVT 3-byte code modes
* - standard timing codes
* - established timing codes
* - modes inferred from GTF or CVT range information
*
* We don't quite implement this yet, but we're close.
*
* XXX order for additional mode types in extension blocks?
*/
num_modes += add_detailed_info(connector, edid, quirks);
num_modes += add_detailed_info_eedid(connector, edid, quirks);
num_modes += add_standard_modes(connector, edid);
num_modes += add_established_modes(connector, edid);
if (quirks & (EDID_QUIRK_PREFER_LARGE_60 | EDID_QUIRK_PREFER_LARGE_75))
edid_fixup_preferred(connector, quirks);