Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/radeon/kms: use helper functions for fence read/write
  drm/radeon/kms: set DP link config properly for DP bridges
  drm/radeon/kms/atom: AdjustPixelClock fixes for DP bridges
  drm/radeon/kms: fix handling of DP to LVDS bridges
  drm/radeon/kms: issue blank/unblank commands for ext encoders
  drm/radeon/kms: fix support for DDC on dp bridges
  drm/radeon/kms: add support for load detection on dp bridges
  drm/radeon/kms: add missing external encoder action
  drm/radeon/kms: rework atombios_get_encoder_mode()
  drm/radeon/kms: fix num crtcs for Cedar and Caicos
  Revert "drm/i915: Enable GMBUS for post-gen2 chipsets"
  drivers/gpu/drm: use printk_ratelimited instead of printk_ratelimit
  drm/radeon: workaround a hw bug on some radeon chipsets with all-0 EDIDs.
  drm: make debug levels match in edid failure code.
  drm/radeon/kms: clear wb memory by default
  drm/radeon/kms: be more pedantic about the g5 quirk (v2)
  drm/radeon/kms: signed fix for evergreen thermal
  drm: populate irq_by_busid-member for pci

15 files changed, 237 insertions, 75 deletions

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 0a9357c..0929219 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -184,9 +184,9 @@ drm_edid_block_valid(u8 *raw_edid)
 
 bad:
 	if (raw_edid) {
-		DRM_ERROR("Raw EDID:\n");
+		printk(KERN_ERR "Raw EDID:\n");
 		print_hex_dump_bytes(KERN_ERR, DUMP_PREFIX_NONE, raw_edid, EDID_LENGTH);
-		printk("\n");
+		printk(KERN_ERR "\n");
 	}
 	return 0;
 }
@@ -258,6 +258,17 @@ drm_do_probe_ddc_edid(struct i2c_adapter *adapter, unsigned char *buf,
 	return ret == 2 ? 0 : -1;
 }
 
+static bool drm_edid_is_zero(u8 *in_edid, int length)
+{
+	int i;
+	u32 *raw_edid = (u32 *)in_edid;
+
+	for (i = 0; i < length / 4; i++)
+		if (*(raw_edid + i) != 0)
+			return false;
+	return true;
+}
+
 static u8 *
 drm_do_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter)
 {
@@ -273,6 +284,10 @@ drm_do_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter)
 			goto out;
 		if (drm_edid_block_valid(block))
 			break;
+		if (i == 0 && drm_edid_is_zero(block, EDID_LENGTH)) {
+			connector->null_edid_counter++;
+			goto carp;
+		}
 	}
 	if (i == 4)
 		goto carp;
diff --git a/drivers/gpu/drm/drm_ioc32.c b/drivers/gpu/drm/drm_ioc32.c
index d61d185..4a058c7 100644
--- a/drivers/gpu/drm/drm_ioc32.c
+++ b/drivers/gpu/drm/drm_ioc32.c
@@ -28,6 +28,7 @@
  * IN THE SOFTWARE.
  */
 #include <linux/compat.h>
+#include <linux/ratelimit.h>
 
 #include "drmP.h"
 #include "drm_core.h"
@@ -253,10 +254,10 @@ static int compat_drm_addmap(struct file *file, unsigned int cmd,
 		return -EFAULT;
 
 	m32.handle = (unsigned long)handle;
-	if (m32.handle != (unsigned long)handle && printk_ratelimit())
-		printk(KERN_ERR "compat_drm_addmap truncated handle"
-		       " %p for type %d offset %x\n",
-		       handle, m32.type, m32.offset);
+	if (m32.handle != (unsigned long)handle)
+		printk_ratelimited(KERN_ERR "compat_drm_addmap truncated handle"
+				   " %p for type %d offset %x\n",
+				   handle, m32.type, m32.offset);
 
 	if (copy_to_user(argp, &m32, sizeof(m32)))
 		return -EFAULT;
diff --git a/drivers/gpu/drm/drm_pci.c b/drivers/gpu/drm/drm_pci.c
index e1aee4f..b6a19cb 100644
--- a/drivers/gpu/drm/drm_pci.c
+++ b/drivers/gpu/drm/drm_pci.c
@@ -251,7 +251,7 @@ err:
 }
 
 
-int drm_pci_irq_by_busid(struct drm_device *dev, struct drm_irq_busid *p)
+static int drm_pci_irq_by_busid(struct drm_device *dev, struct drm_irq_busid *p)
 {
 	if ((p->busnum >> 8) != drm_get_pci_domain(dev) ||
 	    (p->busnum & 0xff) != dev->pdev->bus->number ||
@@ -292,6 +292,7 @@ static struct drm_bus drm_pci_bus = {
 	.get_name = drm_pci_get_name,
 	.set_busid = drm_pci_set_busid,
 	.set_unique = drm_pci_set_unique,
+	.irq_by_busid = drm_pci_irq_by_busid,
 	.agp_init = drm_pci_agp_init,
 };
 
diff --git a/drivers/gpu/drm/i915/intel_i2c.c b/drivers/gpu/drm/i915/intel_i2c.c
index d3b903b..d98cee6 100644
--- a/drivers/gpu/drm/i915/intel_i2c.c
+++ b/drivers/gpu/drm/i915/intel_i2c.c
@@ -401,8 +401,7 @@ int intel_setup_gmbus(struct drm_device *dev)
 		bus->reg0 = i | GMBUS_RATE_100KHZ;
 
 		/* XXX force bit banging until GMBUS is fully debugged */
-		if (IS_GEN2(dev))
-			bus->force_bit = intel_gpio_create(dev_priv, i);
+		bus->force_bit = intel_gpio_create(dev_priv, i);
 	}
 
 	intel_i2c_reset(dev_priv->dev);
diff --git a/drivers/gpu/drm/radeon/atombios.h b/drivers/gpu/drm/radeon/atombios.h
index 49611e2..1b50ad8 100644
--- a/drivers/gpu/drm/radeon/atombios.h
+++ b/drivers/gpu/drm/radeon/atombios.h
@@ -1200,6 +1200,7 @@ typedef struct _EXTERNAL_ENCODER_CONTROL_PARAMETERS_V3
 #define EXTERNAL_ENCODER_ACTION_V3_ENCODER_BLANKING_OFF   0x10
 #define EXTERNAL_ENCODER_ACTION_V3_ENCODER_BLANKING       0x11
 #define EXTERNAL_ENCODER_ACTION_V3_DACLOAD_DETECTION      0x12
+#define EXTERNAL_ENCODER_ACTION_V3_DDC_SETUP              0x14
 
 // ucConfig
 #define EXTERNAL_ENCODER_CONFIG_V3_DPLINKRATE_MASK				0x03
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index 84a69e7..9541995 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -671,6 +671,13 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc,
 								DISPPLL_CONFIG_DUAL_LINK;
 					}
 				}
+				if (radeon_encoder_is_dp_bridge(encoder)) {
+					struct drm_encoder *ext_encoder = radeon_atom_get_external_encoder(encoder);
+					struct radeon_encoder *ext_radeon_encoder = to_radeon_encoder(ext_encoder);
+					args.v3.sInput.ucExtTransmitterID = ext_radeon_encoder->encoder_id;
+				} else
+					args.v3.sInput.ucExtTransmitterID = 0;
+
 				atom_execute_table(rdev->mode_info.atom_context,
 						   index, (uint32_t *)&args);
 				adjusted_clock = le32_to_cpu(args.v3.sOutput.ulDispPllFreq) * 10;
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 86157b1..7e3d96e 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -88,7 +88,8 @@ u32 evergreen_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base)
 /* get temperature in millidegrees */
 int evergreen_get_temp(struct radeon_device *rdev)
 {
-	u32 temp, toffset, actual_temp = 0;
+	u32 temp, toffset;
+	int actual_temp = 0;
 
 	if (rdev->family == CHIP_JUNIPER) {
 		toffset = (RREG32(CG_THERMAL_CTRL) & TOFFSET_MASK) >>
diff --git a/drivers/gpu/drm/radeon/radeon_asic.c b/drivers/gpu/drm/radeon/radeon_asic.c
index 9bd162f..b244962 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.c
+++ b/drivers/gpu/drm/radeon/radeon_asic.c
@@ -938,6 +938,13 @@ static struct radeon_asic cayman_asic = {
 int radeon_asic_init(struct radeon_device *rdev)
 {
 	radeon_register_accessor_init(rdev);
+
+	/* set the number of crtcs */
+	if (rdev->flags & RADEON_SINGLE_CRTC)
+		rdev->num_crtc = 1;
+	else
+		rdev->num_crtc = 2;
+
 	switch (rdev->family) {
 	case CHIP_R100:
 	case CHIP_RV100:
@@ -1017,6 +1024,11 @@ int radeon_asic_init(struct radeon_device *rdev)
 	case CHIP_JUNIPER:
 	case CHIP_CYPRESS:
 	case CHIP_HEMLOCK:
+		/* set num crtcs */
+		if (rdev->family == CHIP_CEDAR)
+			rdev->num_crtc = 4;
+		else
+			rdev->num_crtc = 6;
 		rdev->asic = &evergreen_asic;
 		break;
 	case CHIP_PALM:
@@ -1027,10 +1039,17 @@ int radeon_asic_init(struct radeon_device *rdev)
 	case CHIP_BARTS:
 	case CHIP_TURKS:
 	case CHIP_CAICOS:
+		/* set num crtcs */
+		if (rdev->family == CHIP_CAICOS)
+			rdev->num_crtc = 4;
+		else
+			rdev->num_crtc = 6;
 		rdev->asic = &btc_asic;
 		break;
 	case CHIP_CAYMAN:
 		rdev->asic = &cayman_asic;
+		/* set num crtcs */
+		rdev->num_crtc = 6;
 		break;
 	default:
 		/* FIXME: not supported yet */
@@ -1042,18 +1061,6 @@ int radeon_asic_init(struct radeon_device *rdev)
 		rdev->asic->set_memory_clock = NULL;
 	}
 
-	/* set the number of crtcs */
-	if (rdev->flags & RADEON_SINGLE_CRTC)
-		rdev->num_crtc = 1;
-	else {
-		if (ASIC_IS_DCE41(rdev))
-			rdev->num_crtc = 2;
-		else if (ASIC_IS_DCE4(rdev))
-			rdev->num_crtc = 6;
-		else
-			rdev->num_crtc = 2;
-	}
-
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c
index 797c8bc..e459467 100644
--- a/drivers/gpu/drm/radeon/radeon_combios.c
+++ b/drivers/gpu/drm/radeon/radeon_combios.c
@@ -1553,9 +1553,12 @@ bool radeon_get_legacy_connector_info_from_table(struct drm_device *dev)
 			   (rdev->pdev->subsystem_device == 0x4a48)) {
 			/* Mac X800 */
 			rdev->mode_info.connector_table = CT_MAC_X800;
-		} else if (of_machine_is_compatible("PowerMac7,2") ||
-			   of_machine_is_compatible("PowerMac7,3")) {
-			/* Mac G5 9600 */
+		} else if ((of_machine_is_compatible("PowerMac7,2") ||
+			    of_machine_is_compatible("PowerMac7,3")) &&
+			   (rdev->pdev->device == 0x4150) &&
+			   (rdev->pdev->subsystem_vendor == 0x1002) &&
+			   (rdev->pdev->subsystem_device == 0x4150)) {
+			/* Mac G5 tower 9600 */
 			rdev->mode_info.connector_table = CT_MAC_G5_9600;
 		} else
 #endif /* CONFIG_PPC_PMAC */
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index 9c2929c..cbfca3a 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -44,6 +44,8 @@ extern void
 radeon_legacy_backlight_init(struct radeon_encoder *radeon_encoder,
 			     struct drm_connector *drm_connector);
 
+bool radeon_connector_encoder_is_dp_bridge(struct drm_connector *connector);
+
 void radeon_connector_hotplug(struct drm_connector *connector)
 {
 	struct drm_device *dev = connector->dev;
@@ -836,6 +838,13 @@ radeon_dvi_detect(struct drm_connector *connector, bool force)
 		if (!radeon_connector->edid) {
 			DRM_ERROR("%s: probed a monitor but no|invalid EDID\n",
 					drm_get_connector_name(connector));
+			/* rs690 seems to have a problem with connectors not existing and always
+			 * return a block of 0's. If we see this just stop polling on this output */
+			if ((rdev->family == CHIP_RS690 || rdev->family == CHIP_RS740) && radeon_connector->base.null_edid_counter) {
+				ret = connector_status_disconnected;
+				DRM_ERROR("%s: detected RS690 floating bus bug, stopping ddc detect\n", drm_get_connector_name(connector));
+				radeon_connector->ddc_bus = NULL;
+			}
 		} else {
 			radeon_connector->use_digital = !!(radeon_connector->edid->input & DRM_EDID_INPUT_DIGITAL);
 
@@ -1063,10 +1072,11 @@ static int radeon_dp_get_modes(struct drm_connector *connector)
 {
 	struct radeon_connector *radeon_connector = to_radeon_connector(connector);
 	struct radeon_connector_atom_dig *radeon_dig_connector = radeon_connector->con_priv;
+	struct drm_encoder *encoder = radeon_best_single_encoder(connector);
 	int ret;
 
-	if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
-		struct drm_encoder *encoder;
+	if ((connector->connector_type == DRM_MODE_CONNECTOR_eDP) ||
+	    (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)) {
 		struct drm_display_mode *mode;
 
 		if (!radeon_dig_connector->edp_on)
@@ -1078,7 +1088,6 @@ static int radeon_dp_get_modes(struct drm_connector *connector)
 						     ATOM_TRANSMITTER_ACTION_POWER_OFF);
 
 		if (ret > 0) {
-			encoder = radeon_best_single_encoder(connector);
 			if (encoder) {
 				radeon_fixup_lvds_native_mode(encoder, connector);
 				/* add scaled modes */
@@ -1102,8 +1111,14 @@ static int radeon_dp_get_modes(struct drm_connector *connector)
 			/* add scaled modes */
 			radeon_add_common_modes(encoder, connector);
 		}
-	} else
+	} else {
+		/* need to setup ddc on the bridge */
+		if (radeon_connector_encoder_is_dp_bridge(connector)) {
+			if (encoder)
+				radeon_atom_ext_encoder_setup_ddc(encoder);
+		}
 		ret = radeon_ddc_get_modes(radeon_connector);
+	}
 
 	return ret;
 }
@@ -1187,14 +1202,15 @@ radeon_dp_detect(struct drm_connector *connector, bool force)
 	struct radeon_connector *radeon_connector = to_radeon_connector(connector);
 	enum drm_connector_status ret = connector_status_disconnected;
 	struct radeon_connector_atom_dig *radeon_dig_connector = radeon_connector->con_priv;
+	struct drm_encoder *encoder = radeon_best_single_encoder(connector);
 
 	if (radeon_connector->edid) {
 		kfree(radeon_connector->edid);
 		radeon_connector->edid = NULL;
 	}
 
-	if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
-		struct drm_encoder *encoder = radeon_best_single_encoder(connector);
+	if ((connector->connector_type == DRM_MODE_CONNECTOR_eDP) ||
+	    (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)) {
 		if (encoder) {
 			struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 			struct drm_display_mode *native_mode = &radeon_encoder->native_mode;
@@ -1214,6 +1230,11 @@ radeon_dp_detect(struct drm_connector *connector, bool force)
 			atombios_set_edp_panel_power(connector,
 						     ATOM_TRANSMITTER_ACTION_POWER_OFF);
 	} else {
+		/* need to setup ddc on the bridge */
+		if (radeon_connector_encoder_is_dp_bridge(connector)) {
+			if (encoder)
+				radeon_atom_ext_encoder_setup_ddc(encoder);
+		}
 		radeon_dig_connector->dp_sink_type = radeon_dp_getsinktype(radeon_connector);
 		if (radeon_hpd_sense(rdev, radeon_connector->hpd.hpd)) {
 			ret = connector_status_connected;
@@ -1228,6 +1249,16 @@ 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);
@@ -1242,7 +1273,8 @@ static int radeon_dp_mode_valid(struct drm_connector *connector,
 
 	/* XXX check mode bandwidth */
 
-	if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
+	if ((connector->connector_type == DRM_MODE_CONNECTOR_eDP) ||
+	    (connector->connector_type == DRM_MODE_CONNECTOR_LVDS)) {
 		struct drm_encoder *encoder = radeon_best_single_encoder(connector);
 
 		if ((mode->hdisplay < 320) || (mode->vdisplay < 240))
@@ -1252,7 +1284,7 @@ static int radeon_dp_mode_valid(struct drm_connector *connector,
 			struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 			struct drm_display_mode *native_mode = &radeon_encoder->native_mode;
 
-		/* AVIVO hardware supports downscaling modes larger than the panel
+			/* AVIVO hardware supports downscaling modes larger than the panel
 			 * to the panel size, but I'm not sure this is desirable.
 			 */
 			if ((mode->hdisplay > native_mode->hdisplay) ||
@@ -1401,6 +1433,10 @@ 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:
@@ -1422,6 +1458,12 @@ 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/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index e680501..7cfaa7e 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -215,6 +215,8 @@ int radeon_wb_init(struct radeon_device *rdev)
 		return r;
 	}
 
+	/* clear wb memory */
+	memset((char *)rdev->wb.wb, 0, RADEON_GPU_PAGE_SIZE);
 	/* disable event_write fences */
 	rdev->wb.use_event = false;
 	/* disabled via module param */
diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c b/drivers/gpu/drm/radeon/radeon_encoders.c
index 03f124d..f55b64c 100644
--- a/drivers/gpu/drm/radeon/radeon_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_encoders.c
@@ -367,7 +367,8 @@ static bool radeon_atom_mode_fixup(struct drm_encoder *encoder,
 	}
 
 	if (ASIC_IS_DCE3(rdev) &&
-	    (radeon_encoder->active_device & (ATOM_DEVICE_DFP_SUPPORT | ATOM_DEVICE_LCD_SUPPORT))) {
+	    ((radeon_encoder->active_device & (ATOM_DEVICE_DFP_SUPPORT | ATOM_DEVICE_LCD_SUPPORT)) ||
+	     radeon_encoder_is_dp_bridge(encoder))) {
 		struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
 		radeon_dp_set_link_config(connector, mode);
 	}
@@ -660,21 +661,16 @@ atombios_get_encoder_mode(struct drm_encoder *encoder)
 	if (radeon_encoder_is_dp_bridge(encoder))
 		return ATOM_ENCODER_MODE_DP;
 
+	/* DVO is always DVO */
+	if (radeon_encoder->encoder_id == ATOM_ENCODER_MODE_DVO)
+		return ATOM_ENCODER_MODE_DVO;
+
 	connector = radeon_get_connector_for_encoder(encoder);
-	if (!connector) {
-		switch (radeon_encoder->encoder_id) {
-		case ENCODER_OBJECT_ID_INTERNAL_UNIPHY:
-		case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1:
-		case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2:
-		case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA:
-		case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DVO1:
-			return ATOM_ENCODER_MODE_DVI;
-		case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DAC1:
-		case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DAC2:
-		default:
-			return ATOM_ENCODER_MODE_CRT;
-		}
-	}
+	/* if we don't have an active device yet, just use one of
+	 * the connectors tied to the encoder.
+	 */
+	if (!connector)
+		connector = radeon_get_connector_for_encoder_init(encoder);
 	radeon_connector = to_radeon_connector(connector);
 
 	switch (connector->connector_type) {
@@ -1526,26 +1522,29 @@ radeon_atom_encoder_dpms(struct drm_encoder *encoder, int mode)
 	}
 
 	if (ext_encoder) {
-		int action;
-
 		switch (mode) {
 		case DRM_MODE_DPMS_ON:
 		default:
-			if (ASIC_IS_DCE41(rdev))
-				action = EXTERNAL_ENCODER_ACTION_V3_ENABLE_OUTPUT;
-			else
-				action = ATOM_ENABLE;
+			if (ASIC_IS_DCE41(rdev)) {
+				atombios_external_encoder_setup(encoder, ext_encoder,
+								EXTERNAL_ENCODER_ACTION_V3_ENABLE_OUTPUT);
+				atombios_external_encoder_setup(encoder, ext_encoder,
+								EXTERNAL_ENCODER_ACTION_V3_ENCODER_BLANKING_OFF);
+			} else
+				atombios_external_encoder_setup(encoder, ext_encoder, ATOM_ENABLE);
 			break;
 		case DRM_MODE_DPMS_STANDBY:
 		case DRM_MODE_DPMS_SUSPEND:
 		case DRM_MODE_DPMS_OFF:
-			if (ASIC_IS_DCE41(rdev))
-				action = EXTERNAL_ENCODER_ACTION_V3_DISABLE_OUTPUT;
-			else
-				action = ATOM_DISABLE;
+			if (ASIC_IS_DCE41(rdev)) {
+				atombios_external_encoder_setup(encoder, ext_encoder,
+								EXTERNAL_ENCODER_ACTION_V3_ENCODER_BLANKING);
+				atombios_external_encoder_setup(encoder, ext_encoder,
+								EXTERNAL_ENCODER_ACTION_V3_DISABLE_OUTPUT);
+			} else
+				atombios_external_encoder_setup(encoder, ext_encoder, ATOM_DISABLE);
 			break;
 		}
-		atombios_external_encoder_setup(encoder, ext_encoder, action);
 	}
 
 	radeon_atombios_encoder_dpms_scratch_regs(encoder, (mode == DRM_MODE_DPMS_ON) ? true : false);
@@ -2004,6 +2003,65 @@ 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;
+}
+
+void
+radeon_atom_ext_encoder_setup_ddc(struct drm_encoder *encoder)
+{
+	struct drm_encoder *ext_encoder = radeon_atom_get_external_encoder(encoder);
+
+	if (ext_encoder)
+		/* ddc_setup on the dp bridge */
+		atombios_external_encoder_setup(encoder, ext_encoder,
+						EXTERNAL_ENCODER_ACTION_V3_DDC_SETUP);
+
+}
+
 static void radeon_atom_encoder_prepare(struct drm_encoder *encoder)
 {
 	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
@@ -2167,7 +2225,7 @@ 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 = {
diff --git a/drivers/gpu/drm/radeon/radeon_fence.c b/drivers/gpu/drm/radeon/radeon_fence.c
index 1f82294..021d2b6 100644
--- a/drivers/gpu/drm/radeon/radeon_fence.c
+++ b/drivers/gpu/drm/radeon/radeon_fence.c
@@ -40,6 +40,35 @@
 #include "radeon.h"
 #include "radeon_trace.h"
 
+static void radeon_fence_write(struct radeon_device *rdev, u32 seq)
+{
+	if (rdev->wb.enabled) {
+		u32 scratch_index;
+		if (rdev->wb.use_event)
+			scratch_index = R600_WB_EVENT_OFFSET + rdev->fence_drv.scratch_reg - rdev->scratch.reg_base;
+		else
+			scratch_index = RADEON_WB_SCRATCH_OFFSET + rdev->fence_drv.scratch_reg - rdev->scratch.reg_base;
+		rdev->wb.wb[scratch_index/4] = cpu_to_le32(seq);;
+	} else
+		WREG32(rdev->fence_drv.scratch_reg, seq);
+}
+
+static u32 radeon_fence_read(struct radeon_device *rdev)
+{
+	u32 seq;
+
+	if (rdev->wb.enabled) {
+		u32 scratch_index;
+		if (rdev->wb.use_event)
+			scratch_index = R600_WB_EVENT_OFFSET + rdev->fence_drv.scratch_reg - rdev->scratch.reg_base;
+		else
+			scratch_index = RADEON_WB_SCRATCH_OFFSET + rdev->fence_drv.scratch_reg - rdev->scratch.reg_base;
+		seq = le32_to_cpu(rdev->wb.wb[scratch_index/4]);
+	} else
+		seq = RREG32(rdev->fence_drv.scratch_reg);
+	return seq;
+}
+
 int radeon_fence_emit(struct radeon_device *rdev, struct radeon_fence *fence)
 {
 	unsigned long irq_flags;
@@ -50,12 +79,12 @@ int radeon_fence_emit(struct radeon_device *rdev, struct radeon_fence *fence)
 		return 0;
 	}
 	fence->seq = atomic_add_return(1, &rdev->fence_drv.seq);
-	if (!rdev->cp.ready) {
+	if (!rdev->cp.ready)
 		/* FIXME: cp is not running assume everythings is done right
 		 * away
 		 */
-		WREG32(rdev->fence_drv.scratch_reg, fence->seq);
-	} else
+		radeon_fence_write(rdev, fence->seq);
+	else
 		radeon_fence_ring_emit(rdev, fence);
 
 	trace_radeon_fence_emit(rdev->ddev, fence->seq);
@@ -73,15 +102,7 @@ static bool radeon_fence_poll_locked(struct radeon_device *rdev)
 	bool wake = false;
 	unsigned long cjiffies;
 
-	if (rdev->wb.enabled) {
-		u32 scratch_index;
-		if (rdev->wb.use_event)
-			scratch_index = R600_WB_EVENT_OFFSET + rdev->fence_drv.scratch_reg - rdev->scratch.reg_base;
-		else
-			scratch_index = RADEON_WB_SCRATCH_OFFSET + rdev->fence_drv.scratch_reg - rdev->scratch.reg_base;
-		seq = le32_to_cpu(rdev->wb.wb[scratch_index/4]);
-	} else
-		seq = RREG32(rdev->fence_drv.scratch_reg);
+	seq = radeon_fence_read(rdev);
 	if (seq != rdev->fence_drv.last_seq) {
 		rdev->fence_drv.last_seq = seq;
 		rdev->fence_drv.last_jiffies = jiffies;
@@ -251,7 +272,7 @@ retry:
 			r = radeon_gpu_reset(rdev);
 			if (r)
 				return r;
-			WREG32(rdev->fence_drv.scratch_reg, fence->seq);
+			radeon_fence_write(rdev, fence->seq);
 			rdev->gpu_lockup = false;
 		}
 		timeout = RADEON_FENCE_JIFFIES_TIMEOUT;
@@ -351,7 +372,7 @@ int radeon_fence_driver_init(struct radeon_device *rdev)
 		write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
 		return r;
 	}
-	WREG32(rdev->fence_drv.scratch_reg, 0);
+	radeon_fence_write(rdev, 0);
 	atomic_set(&rdev->fence_drv.seq, 0);
 	INIT_LIST_HEAD(&rdev->fence_drv.created);
 	INIT_LIST_HEAD(&rdev->fence_drv.emited);
@@ -391,7 +412,7 @@ static int radeon_debugfs_fence_info(struct seq_file *m, void *data)
 	struct radeon_fence *fence;
 
 	seq_printf(m, "Last signaled fence 0x%08X\n",
-		   RREG32(rdev->fence_drv.scratch_reg));
+		   radeon_fence_read(rdev));
 	if (!list_empty(&rdev->fence_drv.emited)) {
 		   fence = list_entry(rdev->fence_drv.emited.prev,
 				      struct radeon_fence, list);
diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
index 977a341..6df4e3c 100644
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -483,6 +483,8 @@ extern void radeon_atom_encoder_init(struct radeon_device *rdev);
 extern void atombios_dig_transmitter_setup(struct drm_encoder *encoder,
 					   int action, uint8_t lane_num,
 					   uint8_t lane_set);
+extern void radeon_atom_ext_encoder_setup_ddc(struct drm_encoder *encoder);
+extern struct drm_encoder *radeon_atom_get_external_encoder(struct drm_encoder *encoder);
 extern int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode,
 				u8 write_byte, u8 *read_byte);
 
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 9573e0c..33d12f8 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -520,6 +520,8 @@ struct drm_connector {
 	uint32_t encoder_ids[DRM_CONNECTOR_MAX_ENCODER];
 	uint32_t force_encoder_id;
 	struct drm_encoder *encoder; /* currently active encoder */
+
+	int null_edid_counter; /* needed to workaround some HW bugs where we get all 0s */
 };
 
 /**