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drm/i915: Handle downstream facing ports w/o EDID

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Use drm_dp_downstream_mode() to get a suitable mode for downstream
facing ports which don't have an EDID.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200904115354.25336-15-ville.syrjala@linux.intel.com
Reviewed-by: Lyude Paul <lyude@redhat.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2020-09-04 14:53:50 +03:00
parent 7af655bce2
commit 4b3bb83987
1 changed files with 14 additions and 1 deletions
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15
drivers/gpu/drm/i915/display/intel_dp.c
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@ -6313,7 +6313,7 @@ static int intel_dp_get_modes(struct drm_connector *connector)
}
/* if eDP has no EDID, fall back to fixed mode */
if (intel_dp_is_edp(intel_attached_dp(to_intel_connector(connector))) &&
if (intel_dp_is_edp(intel_attached_dp(intel_connector)) &&
intel_connector->panel.fixed_mode) {
struct drm_display_mode *mode;
@ -6325,6 +6325,19 @@ static int intel_dp_get_modes(struct drm_connector *connector)
}
}
if (!edid) {
struct intel_dp *intel_dp = intel_attached_dp(intel_connector);
struct drm_display_mode *mode;
mode = drm_dp_downstream_mode(connector->dev,
intel_dp->dpcd,
intel_dp->downstream_ports);
if (mode) {
drm_mode_probed_add(connector, mode);
return 1;
}
}
return 0;
}