We need this for dp aux communication. This issue can fill the dmesg with WARN spam when the panel is disable (e.g. while reconfiguring the mode or while resuming).
v2: Actually enable edp vdd early enough. I've missed one dp aux channel thingy ... Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=50808 Reported-by: Linus Torvalds <torvalds at linux-foundation.org> Bugreport: http://permalink.gmane.org/gmane.comp.video.dri.devel/69695 Cc: stable at vger.kernel.org Signed-Off-by: Daniel Vetter <daniel.vetter at ffwll.ch> --- drivers/gpu/drm/i915/intel_dp.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 296cfc2..547cdc6 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -2152,6 +2152,7 @@ intel_dp_detect(struct drm_connector *connector, bool force) intel_dp->has_audio = false; + ironlake_edp_panel_vdd_on(intel_dp); if (HAS_PCH_SPLIT(dev)) status = ironlake_dp_detect(intel_dp); else @@ -2162,8 +2163,10 @@ intel_dp_detect(struct drm_connector *connector, bool force) intel_dp->dpcd[3], intel_dp->dpcd[4], intel_dp->dpcd[5], intel_dp->dpcd[6], intel_dp->dpcd[7]); - if (status != connector_status_connected) + if (status != connector_status_connected) { + ironlake_edp_panel_vdd_off(intel_dp, false); return status; + } intel_dp_probe_oui(intel_dp); @@ -2177,6 +2180,7 @@ intel_dp_detect(struct drm_connector *connector, bool force) kfree(edid); } } + ironlake_edp_panel_vdd_off(intel_dp, false); return connector_status_connected; } -- 1.7.10 -- Daniel Vetter Mail: daniel at ffwll.ch Mobile: +41 (0)79 365 57 48
