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drm/i915: Fix LVDS fixed-mode regression from 219adae1

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Commit 219adae1 cached the EDID found during LVDS init, but in the
process prevented the init routine from discovering the preferred
fixed-mode for the panel. This was causing us to guess the correct mode,
which sometimes is wide of the mark.

Reported-and-tested-by: Jon Masters <jonathan@jonmasters.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2010-11-08 23:20:52 +00:00
parent 08deebf987
commit 3f8ff0e72d
1 changed files with 11 additions and 5 deletions
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16
drivers/gpu/drm/i915/intel_lvds.c
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@ -481,11 +481,8 @@ static int intel_lvds_get_modes(struct drm_connector *connector)
struct drm_device *dev = connector->dev;
struct drm_display_mode *mode;
if (intel_lvds->edid) {
drm_mode_connector_update_edid_property(connector,
intel_lvds->edid);
if (intel_lvds->edid)
return drm_add_edid_modes(connector, intel_lvds->edid);
}
mode = drm_mode_duplicate(dev, intel_lvds->fixed_mode);
if (mode == 0)
@ -939,7 +936,16 @@ void intel_lvds_init(struct drm_device *dev)
*/
intel_lvds->edid = drm_get_edid(connector,
&dev_priv->gmbus[pin].adapter);
if (intel_lvds->edid) {
if (drm_add_edid_modes(connector,
intel_lvds->edid)) {
drm_mode_connector_update_edid_property(connector,
intel_lvds->edid);
} else {
kfree(intel_lvds->edid);
intel_lvds->edid = NULL;
}
}
if (!intel_lvds->edid) {
/* Didn't get an EDID, so
* Set wide sync ranges so we get all modes