drm/i915: eDP aux needs vdd

The new oui probe has been missing these.

This issue has been introduce in

commit 0d198328538276c4459ef5de081e68ae60e6c4c2
Author: Adam Jackson <[email protected]>
Date:   Mon May 14 16:05:47 2012 -0400

    drm/i915/dp: Probe branch/sink OUIs

v2: Do the eDP vdd dance of simply not probing the OUI on eDP panels
as suggested by Chris Wilson.

v3: Fix up the error path fail - I suck.

Cc: Adam Jackson <[email protected]>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=50808
Reported-by: Linus Torvalds <[email protected]>
Bugreport: http://permalink.gmane.org/gmane.comp.video.dri.devel/69695
Tested-by: Yang Guang <[email protected]>
Reviewed-by: Jesse Barnes <[email protected]>
Signed-Off-by: Daniel Vetter <[email protected]>

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 296cfc201a81ea9a0017abfb0e97eee7eaf8dc18..c574ff0189dec310f42026ee76dd6f62fc2733e3 100644 (file)
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1973,6 +1973,8 @@ intel_dp_probe_oui(struct intel_dp *intel_dp)
        if (!(intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT))
                return;
 
+       ironlake_edp_panel_vdd_on(intel_dp);
+
        if (intel_dp_aux_native_read_retry(intel_dp, DP_SINK_OUI, buf, 3))
                DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n",
                              buf[0], buf[1], buf[2]);
@@ -1980,6 +1982,8 @@ intel_dp_probe_oui(struct intel_dp *intel_dp)
        if (intel_dp_aux_native_read_retry(intel_dp, DP_BRANCH_OUI, buf, 3))
                DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n",
                              buf[0], buf[1], buf[2]);
+
+       ironlake_edp_panel_vdd_off(intel_dp, false);
 }
 
 static bool