---

yaml --- r: 218299 b: refs/heads/master c: 8966738 h: refs/heads/master i: 218297: 627a5fb 218295: 642e4be v: v3
git-mirror · Oct 8, 2010 · 3d42cac · 3d42cac
1 parent fc6daaf
commit 3d42cac
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Showing 3 changed files with 22 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 8088699f029b2a27af9bc5431ef7542c84195760
+refs/heads/master: 896673836b8c55b75e7d7d2741aaaadff0c6a038
diff --git a/trunk/drivers/gpu/drm/i915/i915_drv.h b/trunk/drivers/gpu/drm/i915/i915_drv.h
@@ -350,6 +350,7 @@ typedef struct drm_i915_private {
 		int bpp;
 		struct edp_power_seq pps;
 	} edp;
+	bool no_aux_handshake;
 
 	struct notifier_block lid_notifier;
 

diff --git a/trunk/drivers/gpu/drm/i915/intel_dp.c b/trunk/drivers/gpu/drm/i915/intel_dp.c
@@ -1724,6 +1724,26 @@ intel_dp_init(struct drm_device *dev, int output_reg)
 
 	intel_dp_i2c_init(intel_dp, intel_connector, name);
 
+	/* Cache some DPCD data in the eDP case */
+	if (is_edp(intel_dp)) {
+		int ret;
+		bool was_on;
+
+		was_on = ironlake_edp_panel_on(intel_dp);
+		ret = intel_dp_aux_native_read(intel_dp, DP_DPCD_REV,
+					       intel_dp->dpcd,
+					       sizeof(intel_dp->dpcd));
+		if (ret == sizeof(intel_dp->dpcd)) {
+			if (intel_dp->dpcd[0] >= 0x11)
+				dev_priv->no_aux_handshake = intel_dp->dpcd[3] &
+					DP_NO_AUX_HANDSHAKE_LINK_TRAINING;
+		} else {
+			DRM_ERROR("failed to retrieve link info\n");
+		}
+		if (!was_on)
+			ironlake_edp_panel_off(dev);
+	}
+
 	intel_encoder->hot_plug = intel_dp_hot_plug;
 
 	if (is_edp(intel_dp)) {