From 3f3c0de8d0deb312f75a8ade05f3eed21db9ee03 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexdeucher@gmail.com>
Date: Mon, 13 Jun 2011 17:13:33 -0400
Subject: [PATCH] --- yaml --- r: 253727 b: refs/heads/master c:
 d629a3ceb4fc1ab5aab737b964100d114aba1173 h: refs/heads/master i:   253725:
 c5dab3247e3d4c8e1a0cb27344ad0bf4c1c05d20   253723:
 0808ee6833a9bdc49cb2c16afbda5c04cc474f6d   253719:
 4bb8047ea8b97b32ae4472e709a114ef9e1fcdfd   253711:
 4534dd93e7a4d0848be88f2d1cf7611fd787809a   253695:
 34ce681bf70eaae95bbdd869092a0ed979521066 v: v3

---
 [refs]                                        |  2 +-
 .../gpu/drm/radeon/radeon_connectors.c        | 20 ++++++++
 .../drivers/gpu/drm/radeon/radeon_encoders.c  | 49 ++++++++++++++++++-
 3 files changed, 69 insertions(+), 2 deletions(-)

diff --git a/[refs] b/[refs]
index 519984bac744..f8baabc368fe 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 7ec478f835a391d27491493ebfd91f2bed98dbd9
+refs/heads/master: d629a3ceb4fc1ab5aab737b964100d114aba1173
diff --git a/trunk/drivers/gpu/drm/radeon/radeon_connectors.c b/trunk/drivers/gpu/drm/radeon/radeon_connectors.c
index c04e18ee8a87..dc7852b3c5ca 100644
--- a/trunk/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/trunk/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -1235,6 +1235,16 @@ radeon_dp_detect(struct drm_connector *connector, bool force)
 					ret = connector_status_connected;
 			}
 		}
+
+		if ((ret == connector_status_disconnected) &&
+		    radeon_connector->dac_load_detect) {
+			struct drm_encoder *encoder = radeon_best_single_encoder(connector);
+			struct drm_encoder_helper_funcs *encoder_funcs;
+			if (encoder) {
+				encoder_funcs = encoder->helper_private;
+				ret = encoder_funcs->detect(encoder, connector);
+			}
+		}
 	}
 
 	radeon_connector_update_scratch_regs(connector, ret);
@@ -1408,6 +1418,10 @@ radeon_add_atom_connector(struct drm_device *dev,
 		default:
 			connector->interlace_allowed = true;
 			connector->doublescan_allowed = true;
+			radeon_connector->dac_load_detect = true;
+			drm_connector_attach_property(&radeon_connector->base,
+						      rdev->mode_info.load_detect_property,
+						      1);
 			break;
 		case DRM_MODE_CONNECTOR_DVII:
 		case DRM_MODE_CONNECTOR_DVID:
@@ -1429,6 +1443,12 @@ radeon_add_atom_connector(struct drm_device *dev,
 				connector->doublescan_allowed = true;
 			else
 				connector->doublescan_allowed = false;
+			if (connector_type == DRM_MODE_CONNECTOR_DVII) {
+				radeon_connector->dac_load_detect = true;
+				drm_connector_attach_property(&radeon_connector->base,
+							      rdev->mode_info.load_detect_property,
+							      1);
+			}
 			break;
 		case DRM_MODE_CONNECTOR_LVDS:
 		case DRM_MODE_CONNECTOR_eDP:
diff --git a/trunk/drivers/gpu/drm/radeon/radeon_encoders.c b/trunk/drivers/gpu/drm/radeon/radeon_encoders.c
index 39fa2258f235..d3449443aa1f 100644
--- a/trunk/drivers/gpu/drm/radeon/radeon_encoders.c
+++ b/trunk/drivers/gpu/drm/radeon/radeon_encoders.c
@@ -1999,6 +1999,53 @@ radeon_atom_dac_detect(struct drm_encoder *encoder, struct drm_connector *connec
 	return connector_status_disconnected;
 }
 
+static enum drm_connector_status
+radeon_atom_dig_detect(struct drm_encoder *encoder, struct drm_connector *connector)
+{
+	struct drm_device *dev = encoder->dev;
+	struct radeon_device *rdev = dev->dev_private;
+	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+	struct radeon_connector *radeon_connector = to_radeon_connector(connector);
+	struct drm_encoder *ext_encoder = radeon_atom_get_external_encoder(encoder);
+	u32 bios_0_scratch;
+
+	if (!ASIC_IS_DCE4(rdev))
+		return connector_status_unknown;
+
+	if (!ext_encoder)
+		return connector_status_unknown;
+
+	if ((radeon_connector->devices & ATOM_DEVICE_CRT_SUPPORT) == 0)
+		return connector_status_unknown;
+
+	/* load detect on the dp bridge */
+	atombios_external_encoder_setup(encoder, ext_encoder,
+					EXTERNAL_ENCODER_ACTION_V3_DACLOAD_DETECTION);
+
+	bios_0_scratch = RREG32(R600_BIOS_0_SCRATCH);
+
+	DRM_DEBUG_KMS("Bios 0 scratch %x %08x\n", bios_0_scratch, radeon_encoder->devices);
+	if (radeon_connector->devices & ATOM_DEVICE_CRT1_SUPPORT) {
+		if (bios_0_scratch & ATOM_S0_CRT1_MASK)
+			return connector_status_connected;
+	}
+	if (radeon_connector->devices & ATOM_DEVICE_CRT2_SUPPORT) {
+		if (bios_0_scratch & ATOM_S0_CRT2_MASK)
+			return connector_status_connected;
+	}
+	if (radeon_connector->devices & ATOM_DEVICE_CV_SUPPORT) {
+		if (bios_0_scratch & (ATOM_S0_CV_MASK|ATOM_S0_CV_MASK_A))
+			return connector_status_connected;
+	}
+	if (radeon_connector->devices & ATOM_DEVICE_TV1_SUPPORT) {
+		if (bios_0_scratch & (ATOM_S0_TV1_COMPOSITE | ATOM_S0_TV1_COMPOSITE_A))
+			return connector_status_connected; /* CTV */
+		else if (bios_0_scratch & (ATOM_S0_TV1_SVIDEO | ATOM_S0_TV1_SVIDEO_A))
+			return connector_status_connected; /* STV */
+	}
+	return connector_status_disconnected;
+}
+
 static void radeon_atom_encoder_prepare(struct drm_encoder *encoder)
 {
 	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
@@ -2162,7 +2209,7 @@ static const struct drm_encoder_helper_funcs radeon_atom_dig_helper_funcs = {
 	.mode_set = radeon_atom_encoder_mode_set,
 	.commit = radeon_atom_encoder_commit,
 	.disable = radeon_atom_encoder_disable,
-	/* no detect for TMDS/LVDS yet */
+	.detect = radeon_atom_dig_detect,
 };
 
 static const struct drm_encoder_helper_funcs radeon_atom_dac_helper_funcs = {