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drm/i915: Add fixed panel mode parsed from EDID for eDP without fixed mode in VBT

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Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Zhao Yakui 2010-07-19 09:43:11 +01:00 committed by Eric Anholt
parent 81a14b4684
commit b9efc4804b
1 changed files with 15 additions and 1 deletions
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16
drivers/gpu/drm/i915/intel_dp.c
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@ -1374,8 +1374,22 @@ static int intel_dp_get_modes(struct drm_connector *connector)
*/
ret = intel_ddc_get_modes(connector, intel_encoder->ddc_bus);
if (ret)
if (ret) {
if ((IS_eDP(intel_encoder) || IS_PCH_eDP(dp_priv)) &&
!dev_priv->panel_fixed_mode) {
struct drm_display_mode *newmode;
list_for_each_entry(newmode, &connector->probed_modes,
head) {
if (newmode->type & DRM_MODE_TYPE_PREFERRED) {
dev_priv->panel_fixed_mode =
drm_mode_duplicate(dev, newmode);
break;
}
}
}
return ret;
}
/* if eDP has no EDID, try to use fixed panel mode from VBT */
if (IS_eDP(intel_encoder) || IS_PCH_eDP(dp_priv)) {