diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 3cdea4d7a917..9493c8f76538 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -5313,6 +5313,19 @@ static bool intel_edp_init_connector(struct intel_dp *intel_dp, if (!is_edp(intel_dp)) return true; + /* + * On IBX/CPT we may get here with LVDS already registered. Since the + * driver uses the only internal power sequencer available for both + * eDP and LVDS bail out early in this case to prevent interfering + * with an already powered-on LVDS power sequencer. + */ + if (intel_get_lvds_encoder(dev)) { + WARN_ON(!(HAS_PCH_IBX(dev_priv) || HAS_PCH_CPT(dev_priv))); + DRM_INFO("LVDS was detected, not registering eDP\n"); + + return false; + } + pps_lock(intel_dp); intel_edp_panel_vdd_sanitize(intel_dp); pps_unlock(intel_dp); |