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drm/edid: respect connector force for drm_get_edid ddc probe

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Skip DDC probe for forced connector status. Don't try to read the EDID
if the connector is forced off. Skipping probe for forced on connectors
will make more sense when drm_do_get_edid() will handle override and
firmware EDIDs.

Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1487344854-18777-4-git-send-email-jani.nikula@intel.com
This commit is contained in:
Jani Nikula 2017-02-17 17:20:53 +02:00
parent e9bd0b84f4
commit 15f080f08d
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/drm_edid.c
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@ -1428,7 +1428,10 @@ struct edid *drm_get_edid(struct drm_connector *connector,
{
struct edid *edid;
if (!drm_probe_ddc(adapter))
if (connector->force == DRM_FORCE_OFF)
return NULL;
if (connector->force == DRM_FORCE_UNSPECIFIED && !drm_probe_ddc(adapter))
return NULL;
edid = drm_do_get_edid(connector, drm_do_probe_ddc_edid, adapter);