From b5c6549818471087ab91d6bb37bc2be82042fab8 Mon Sep 17 00:00:00 2001
From: "Sergey Semyonov (Serge)" <ion2@mail.ru>
Date: Tue, 6 Sep 2011 08:36:54 +0000
Subject: [PATCH] sync video blitter

git-svn-id: svn://kolibrios.org@2160 a494cfbc-eb01-0410-851d-a64ba20cac60
---
 drivers/video/drm/drm_crtc.c                 |  2 +
 drivers/video/drm/drm_crtc_helper.c          |  5 ++
 drivers/video/drm/drm_edid.c                 | 36 ++++++--
 drivers/video/drm/drm_fb_helper.c            |  7 --
 drivers/video/drm/radeon/atom.c              |  3 +
 drivers/video/drm/radeon/atombios_crtc.c     |  5 +-
 drivers/video/drm/radeon/atombios_dp.c       | 22 ++++-
 drivers/video/drm/radeon/evergreen.c         |  7 +-
 drivers/video/drm/radeon/evergreend.h        |  2 +
 drivers/video/drm/radeon/ni.c                |  2 +
 drivers/video/drm/radeon/pci.c               | 68 +++++++--------
 drivers/video/drm/radeon/r600.c              | 19 +++--
 drivers/video/drm/radeon/r600_blit_kms.c     | 38 +++++++--
 drivers/video/drm/radeon/radeon.h            |  3 +
 drivers/video/drm/radeon/radeon_asic.c       | 20 +++--
 drivers/video/drm/radeon/radeon_clocks.c     |  2 +-
 drivers/video/drm/radeon/radeon_combios.c    |  5 +-
 drivers/video/drm/radeon/radeon_connectors.c | 54 +++++++++++-
 drivers/video/drm/radeon/radeon_device.c     | 20 +++--
 drivers/video/drm/radeon/radeon_display.c    | 13 ++-
 drivers/video/drm/radeon/radeon_encoders.c   |  3 +
 drivers/video/drm/radeon/radeon_i2c.c        | 30 +++++--
 drivers/video/drm/radeon/radeon_irq_kms.c    | 89 ++------------------
 drivers/video/drm/radeon/radeon_mode.h       |  7 +-
 drivers/video/drm/radeon/radeon_reg.h        |  2 +-
 drivers/video/drm/radeon/rs600.c             |  2 +-
 drivers/video/drm/radeon/rv770.c             |  1 +
 27 files changed, 272 insertions(+), 195 deletions(-)

diff --git a/drivers/video/drm/drm_crtc.c b/drivers/video/drm/drm_crtc.c
index 34e24e1ef4..5cfec74362 100644
--- a/drivers/video/drm/drm_crtc.c
+++ b/drivers/video/drm/drm_crtc.c
@@ -499,6 +499,7 @@ void drm_connector_cleanup(struct drm_connector *connector)
 	mutex_lock(&dev->mode_config.mutex);
 	drm_mode_object_put(dev, &connector->base);
 	list_del(&connector->head);
+	dev->mode_config.num_connector--;
 	mutex_unlock(&dev->mode_config.mutex);
 }
 EXPORT_SYMBOL(drm_connector_cleanup);
@@ -529,6 +530,7 @@ void drm_encoder_cleanup(struct drm_encoder *encoder)
 	mutex_lock(&dev->mode_config.mutex);
 	drm_mode_object_put(dev, &encoder->base);
 	list_del(&encoder->head);
+	dev->mode_config.num_encoder--;
 	mutex_unlock(&dev->mode_config.mutex);
 }
 EXPORT_SYMBOL(drm_encoder_cleanup);
diff --git a/drivers/video/drm/drm_crtc_helper.c b/drivers/video/drm/drm_crtc_helper.c
index d16f59035d..88cd1ccf2c 100644
--- a/drivers/video/drm/drm_crtc_helper.c
+++ b/drivers/video/drm/drm_crtc_helper.c
@@ -559,6 +559,11 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set)
 			mode_changed = true;
 		} else if (set->fb == NULL) {
 			mode_changed = true;
+		} else if (set->fb->depth != set->crtc->fb->depth) {
+			mode_changed = true;
+		} else if (set->fb->bits_per_pixel !=
+			   set->crtc->fb->bits_per_pixel) {
+			mode_changed = true;
 		} else
 			fb_changed = true;
 	}
diff --git a/drivers/video/drm/drm_edid.c b/drivers/video/drm/drm_edid.c
index 0b619eb6ce..b2a2798f57 100644
--- a/drivers/video/drm/drm_edid.c
+++ b/drivers/video/drm/drm_edid.c
@@ -127,6 +127,23 @@ static const u8 edid_header[] = {
 	0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00
 };
 
+ /*
+ * Sanity check the header of the base EDID block.  Return 8 if the header
+ * is perfect, down to 0 if it's totally wrong.
+ */
+int drm_edid_header_is_valid(const u8 *raw_edid)
+{
+	int i, score = 0;
+
+	for (i = 0; i < sizeof(edid_header); i++)
+		if (raw_edid[i] == edid_header[i])
+			score++;
+
+	return score;
+}
+EXPORT_SYMBOL(drm_edid_header_is_valid);
+
+
 /*
  * Sanity check the EDID block (base or extension).  Return 0 if the block
  * doesn't check out, or 1 if it's valid.
@@ -139,12 +156,7 @@ drm_edid_block_valid(u8 *raw_edid)
 	struct edid *edid = (struct edid *)raw_edid;
 
 	if (raw_edid[0] == 0x00) {
-		int score = 0;
-
-	for (i = 0; i < sizeof(edid_header); i++)
-		if (raw_edid[i] == edid_header[i])
-			score++;
-
+		int score = drm_edid_header_is_valid(raw_edid);
 	if (score == 8) ;
 	else if (score >= 6) {
 		DRM_DEBUG("Fixing EDID header, your hardware may be failing\n");
@@ -185,8 +197,7 @@ drm_edid_block_valid(u8 *raw_edid)
 bad:
 	if (raw_edid) {
 		printk(KERN_ERR "Raw EDID:\n");
-//       print_hex_dump_bytes(KERN_ERR, DUMP_PREFIX_NONE, raw_edid, EDID_LENGTH);
-		printk(KERN_ERR "\n");
+//		print_hex_dump_bytes(KERN_ERR, DUMP_PREFIX_NONE, raw_edid, EDID_LENGTH);
 	}
 	return 0;
 }
@@ -1449,6 +1460,8 @@ EXPORT_SYMBOL(drm_detect_monitor_audio);
 static void drm_add_display_info(struct edid *edid,
 				 struct drm_display_info *info)
 {
+	u8 *edid_ext;
+
 	info->width_mm = edid->width_cm * 10;
 	info->height_mm = edid->height_cm * 10;
 
@@ -1493,6 +1506,13 @@ static void drm_add_display_info(struct edid *edid,
 		info->color_formats = DRM_COLOR_FORMAT_YCRCB444;
 	if (info->color_formats & DRM_EDID_FEATURE_RGB_YCRCB422)
 		info->color_formats = DRM_COLOR_FORMAT_YCRCB422;
+
+	/* Get data from CEA blocks if present */
+	edid_ext = drm_find_cea_extension(edid);
+	if (!edid_ext)
+		return;
+
+	info->cea_rev = edid_ext[1];
 }
 
 /**
diff --git a/drivers/video/drm/drm_fb_helper.c b/drivers/video/drm/drm_fb_helper.c
index 9d3d367bc8..7f19c5e460 100644
--- a/drivers/video/drm/drm_fb_helper.c
+++ b/drivers/video/drm/drm_fb_helper.c
@@ -580,10 +580,6 @@ int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper,
 	}
 
 	/* push down into drivers */
-
-    DRM_INFO("enter fb probe\n");
-
-
     new_fb = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes);
 	if (new_fb < 0)
 		return new_fb;
@@ -609,9 +605,6 @@ int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper,
 	if (new_fb)
         list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list);
 
-
-    LEAVE();
-
 	return 0;
 }
 EXPORT_SYMBOL(drm_fb_helper_single_fb_probe);
diff --git a/drivers/video/drm/radeon/atom.c b/drivers/video/drm/radeon/atom.c
index 3aff1262c1..214defe241 100644
--- a/drivers/video/drm/radeon/atom.c
+++ b/drivers/video/drm/radeon/atom.c
@@ -1228,6 +1228,9 @@ struct atom_context *atom_parse(struct card_info *card, void *bios)
 	char name[512];
 	int i;
 
+	if (!ctx)
+		return NULL;
+
 	ctx->card = card;
 	ctx->bios = bios;
 
diff --git a/drivers/video/drm/radeon/atombios_crtc.c b/drivers/video/drm/radeon/atombios_crtc.c
index ffeb585d93..ee0d41247a 100644
--- a/drivers/video/drm/radeon/atombios_crtc.c
+++ b/drivers/video/drm/radeon/atombios_crtc.c
@@ -764,7 +764,7 @@ static void atombios_crtc_set_dcpll(struct drm_crtc *crtc,
 }
 
 static void atombios_crtc_program_pll(struct drm_crtc *crtc,
-				      int crtc_id,
+				      u32 crtc_id,
 				      int pll_id,
 				      u32 encoder_mode,
 				      u32 encoder_id,
@@ -851,8 +851,7 @@ static void atombios_crtc_program_pll(struct drm_crtc *crtc,
 			args.v5.ucPpll = pll_id;
 			break;
 		case 6:
-			args.v6.ulCrtcPclkFreq.ucCRTC = crtc_id;
-			args.v6.ulCrtcPclkFreq.ulPixelClock = cpu_to_le32(clock / 10);
+			args.v6.ulDispEngClkFreq = cpu_to_le32(crtc_id << 24 | clock / 10);
 			args.v6.ucRefDiv = ref_div;
 			args.v6.usFbDiv = cpu_to_le16(fb_div);
 			args.v6.ulFbDivDecFrac = cpu_to_le32(frac_fb_div * 100000);
diff --git a/drivers/video/drm/radeon/atombios_dp.c b/drivers/video/drm/radeon/atombios_dp.c
index 5eb4e6bda6..4857c097c5 100644
--- a/drivers/video/drm/radeon/atombios_dp.c
+++ b/drivers/video/drm/radeon/atombios_dp.c
@@ -627,6 +627,7 @@ struct radeon_dp_link_train_info {
 	u8 train_set[4];
 	u8 link_status[DP_LINK_STATUS_SIZE];
 	u8 tries;
+	bool use_dpencoder;
 };
 
 static void radeon_dp_update_vs_emph(struct radeon_dp_link_train_info *dp_info)
@@ -646,7 +647,7 @@ static void radeon_dp_set_tp(struct radeon_dp_link_train_info *dp_info, int tp)
 	int rtp = 0;
 
 	/* set training pattern on the source */
-	if (ASIC_IS_DCE4(dp_info->rdev)) {
+	if (ASIC_IS_DCE4(dp_info->rdev) || !dp_info->use_dpencoder) {
 		switch (tp) {
 		case DP_TRAINING_PATTERN_1:
 			rtp = ATOM_ENCODER_CMD_DP_LINK_TRAINING_PATTERN1;
@@ -706,7 +707,7 @@ static int radeon_dp_link_train_init(struct radeon_dp_link_train_info *dp_info)
 	radeon_write_dpcd_reg(dp_info->radeon_connector, DP_LINK_BW_SET, tmp);
 
 	/* start training on the source */
-	if (ASIC_IS_DCE4(dp_info->rdev))
+	if (ASIC_IS_DCE4(dp_info->rdev) || !dp_info->use_dpencoder)
 		atombios_dig_encoder_setup(dp_info->encoder,
 					   ATOM_ENCODER_CMD_DP_LINK_TRAINING_START, 0);
 	else
@@ -731,7 +732,7 @@ static int radeon_dp_link_train_finish(struct radeon_dp_link_train_info *dp_info
 			      DP_TRAINING_PATTERN_DISABLE);
 
 	/* disable the training pattern on the source */
-	if (ASIC_IS_DCE4(dp_info->rdev))
+	if (ASIC_IS_DCE4(dp_info->rdev) || !dp_info->use_dpencoder)
 		atombios_dig_encoder_setup(dp_info->encoder,
 					   ATOM_ENCODER_CMD_DP_LINK_TRAINING_COMPLETE, 0);
 	else
@@ -869,7 +870,8 @@ void radeon_dp_link_train(struct drm_encoder *encoder,
 	struct radeon_connector *radeon_connector;
 	struct radeon_connector_atom_dig *dig_connector;
 	struct radeon_dp_link_train_info dp_info;
- 	u8 tmp;
+	int index;
+	u8 tmp, frev, crev;
 
 	if (!radeon_encoder->enc_priv)
 		return;
@@ -884,6 +886,18 @@ void radeon_dp_link_train(struct drm_encoder *encoder,
 	    (dig_connector->dp_sink_type != CONNECTOR_OBJECT_ID_eDP))
 		return;
 
+	/* DPEncoderService newer than 1.1 can't program properly the
+	 * training pattern. When facing such version use the
+	 * DIGXEncoderControl (X== 1 | 2)
+	 */
+	dp_info.use_dpencoder = true;
+	index = GetIndexIntoMasterTable(COMMAND, DPEncoderService);
+	if (atom_parse_cmd_header(rdev->mode_info.atom_context, index, &frev, &crev)) {
+		if (crev > 1) {
+			dp_info.use_dpencoder = false;
+		}
+	}
+
 	dp_info.enc_id = 0;
 	if (dig->dig_encoder)
 		dp_info.enc_id |= ATOM_DP_CONFIG_DIG2_ENCODER;
diff --git a/drivers/video/drm/radeon/evergreen.c b/drivers/video/drm/radeon/evergreen.c
index 5348c0267d..58159300c2 100644
--- a/drivers/video/drm/radeon/evergreen.c
+++ b/drivers/video/drm/radeon/evergreen.c
@@ -733,7 +733,7 @@ static void evergreen_program_watermarks(struct radeon_device *rdev,
 		    !evergreen_average_bandwidth_vs_available_bandwidth(&wm) ||
 		    !evergreen_check_latency_hiding(&wm) ||
 		    (rdev->disp_priority == 2)) {
-			DRM_INFO("force priority to high\n");
+			DRM_DEBUG_KMS("force priority to high\n");
 			priority_a_cnt |= PRIORITY_ALWAYS_ON;
 			priority_b_cnt |= PRIORITY_ALWAYS_ON;
 		}
@@ -1347,6 +1347,7 @@ int evergreen_cp_resume(struct radeon_device *rdev)
 				 SOFT_RESET_PA |
 				 SOFT_RESET_SH |
 				 SOFT_RESET_VGT |
+				 SOFT_RESET_SPI |
 				 SOFT_RESET_SX));
 	RREG32(GRBM_SOFT_RESET);
 	mdelay(15);
@@ -1372,9 +1373,6 @@ int evergreen_cp_resume(struct radeon_device *rdev)
 
 	/* set the wb address wether it's enabled or not */
 	WREG32(CP_RB_RPTR_ADDR,
-#ifdef __BIG_ENDIAN
-	       RB_RPTR_SWAP(2) |
-#endif
 	       ((rdev->wb.gpu_addr + RADEON_WB_CP_RPTR_OFFSET) & 0xFFFFFFFC));
 	WREG32(CP_RB_RPTR_ADDR_HI, upper_32_bits(rdev->wb.gpu_addr + RADEON_WB_CP_RPTR_OFFSET) & 0xFF);
 	WREG32(SCRATCH_ADDR, ((rdev->wb.gpu_addr + RADEON_WB_SCRATCH_OFFSET) >> 8) & 0xFFFFFFFF);
@@ -2037,6 +2035,7 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
 	rdev->config.evergreen.tile_config |=
 		((gb_addr_config & 0x30000000) >> 28) << 12;
 
+	rdev->config.evergreen.backend_map = gb_backend_map;
 	WREG32(GB_BACKEND_MAP, gb_backend_map);
 	WREG32(GB_ADDR_CONFIG, gb_addr_config);
 	WREG32(DMIF_ADDR_CONFIG, gb_addr_config);
diff --git a/drivers/video/drm/radeon/evergreend.h b/drivers/video/drm/radeon/evergreend.h
index da2c7a7aed..287ec84818 100644
--- a/drivers/video/drm/radeon/evergreend.h
+++ b/drivers/video/drm/radeon/evergreend.h
@@ -351,6 +351,7 @@
 #define		COLOR_BUFFER_SIZE(x)				((x) << 0)
 #define		POSITION_BUFFER_SIZE(x)				((x) << 8)
 #define		SMX_BUFFER_SIZE(x)				((x) << 16)
+#define	SX_MEMORY_EXPORT_BASE				0x9010
 #define	SX_MISC						0x28350
 
 #define CB_PERF_CTR0_SEL_0				0x9A20
@@ -1122,6 +1123,7 @@
 #define CAYMAN_PA_SC_AA_CONFIG				0x28BE0
 #define         CAYMAN_MSAA_NUM_SAMPLES_SHIFT           0
 #define         CAYMAN_MSAA_NUM_SAMPLES_MASK            0x7
+#define CAYMAN_SX_SCATTER_EXPORT_BASE			0x28358
 /* cayman packet3 addition */
 #define	CAYMAN_PACKET3_DEALLOC_STATE			0x14
 
diff --git a/drivers/video/drm/radeon/ni.c b/drivers/video/drm/radeon/ni.c
index 974b46643a..7886c762f4 100644
--- a/drivers/video/drm/radeon/ni.c
+++ b/drivers/video/drm/radeon/ni.c
@@ -833,6 +833,7 @@ static void cayman_gpu_init(struct radeon_device *rdev)
 	rdev->config.cayman.tile_config |=
 		((gb_addr_config & ROW_SIZE_MASK) >> ROW_SIZE_SHIFT) << 12;
 
+	rdev->config.cayman.backend_map = gb_backend_map;
 	WREG32(GB_BACKEND_MAP, gb_backend_map);
 	WREG32(GB_ADDR_CONFIG, gb_addr_config);
 	WREG32(DMIF_ADDR_CONFIG, gb_addr_config);
@@ -1147,6 +1148,7 @@ int cayman_cp_resume(struct radeon_device *rdev)
 				 SOFT_RESET_PA |
 				 SOFT_RESET_SH |
 				 SOFT_RESET_VGT |
+				 SOFT_RESET_SPI |
 				 SOFT_RESET_SX));
 	RREG32(GRBM_SOFT_RESET);
 	mdelay(15);
diff --git a/drivers/video/drm/radeon/pci.c b/drivers/video/drm/radeon/pci.c
index f40bce1284..213fdd0a03 100644
--- a/drivers/video/drm/radeon/pci.c
+++ b/drivers/video/drm/radeon/pci.c
@@ -2,8 +2,8 @@
 #include <linux/kernel.h>
 #include <linux/mutex.h>
 #include <linux/mod_devicetable.h>
-#include <pci.h>
 #include <errno-base.h>
+#include <pci.h>
 #include <syscall.h>
 
 static LIST_HEAD(devices);
@@ -95,10 +95,10 @@ static void pci_read_bases(struct pci_dev *dev, unsigned int howmany, int rom)
         res  = &dev->resource[pos];
 
         reg = PCI_BASE_ADDRESS_0 + (pos << 2);
-        l = PciRead32(dev->bus, dev->devfn, reg);
-        PciWrite32(dev->bus, dev->devfn, reg, ~0);
-        sz = PciRead32(dev->bus, dev->devfn, reg);
-        PciWrite32(dev->bus, dev->devfn, reg, l);
+        l = PciRead32(dev->busnr, dev->devfn, reg);
+        PciWrite32(dev->busnr, dev->devfn, reg, ~0);
+        sz = PciRead32(dev->busnr, dev->devfn, reg);
+        PciWrite32(dev->busnr, dev->devfn, reg, l);
 
         if (!sz || sz == 0xffffffff)
             continue;
@@ -134,10 +134,10 @@ static void pci_read_bases(struct pci_dev *dev, unsigned int howmany, int rom)
         {
             u32_t szhi, lhi;
 
-            lhi = PciRead32(dev->bus, dev->devfn, reg+4);
-            PciWrite32(dev->bus, dev->devfn, reg+4, ~0);
-            szhi = PciRead32(dev->bus, dev->devfn, reg+4);
-            PciWrite32(dev->bus, dev->devfn, reg+4, lhi);
+            lhi = PciRead32(dev->busnr, dev->devfn, reg+4);
+            PciWrite32(dev->busnr, dev->devfn, reg+4, ~0);
+            szhi = PciRead32(dev->busnr, dev->devfn, reg+4);
+            PciWrite32(dev->busnr, dev->devfn, reg+4, lhi);
             sz64 = ((u64_t)szhi << 32) | raw_sz;
             l64 = ((u64_t)lhi << 32) | l;
             sz64 = pci_size64(l64, sz64, PCI_BASE_ADDRESS_MEM_MASK);
@@ -162,9 +162,9 @@ static void pci_read_bases(struct pci_dev *dev, unsigned int howmany, int rom)
             else if (lhi)
             {
                 /* 64-bit wide address, treat as disabled */
-                PciWrite32(dev->bus, dev->devfn, reg,
+                PciWrite32(dev->busnr, dev->devfn, reg,
                         l & ~(u32_t)PCI_BASE_ADDRESS_MEM_MASK);
-                PciWrite32(dev->bus, dev->devfn, reg+4, 0);
+                PciWrite32(dev->busnr, dev->devfn, reg+4, 0);
                 res->start = 0;
                 res->end = sz;
             }
@@ -177,10 +177,10 @@ static void pci_read_bases(struct pci_dev *dev, unsigned int howmany, int rom)
         dev->rom_base_reg = rom;
         res = &dev->resource[PCI_ROM_RESOURCE];
 
-        l = PciRead32(dev->bus, dev->devfn, rom);
-        PciWrite32(dev->bus, dev->devfn, rom, ~PCI_ROM_ADDRESS_ENABLE);
-        sz = PciRead32(dev->bus, dev->devfn, rom);
-        PciWrite32(dev->bus, dev->devfn, rom, l);
+        l = PciRead32(dev->busnr, dev->devfn, rom);
+        PciWrite32(dev->busnr, dev->devfn, rom, ~PCI_ROM_ADDRESS_ENABLE);
+        sz = PciRead32(dev->busnr, dev->devfn, rom);
+        PciWrite32(dev->busnr, dev->devfn, rom, l);
 
         if (l == 0xffffffff)
             l = 0;
@@ -205,19 +205,19 @@ static void pci_read_irq(struct pci_dev *dev)
 {
     u8_t irq;
 
-    irq = PciRead8(dev->bus, dev->devfn, PCI_INTERRUPT_PIN);
+    irq = PciRead8(dev->busnr, dev->devfn, PCI_INTERRUPT_PIN);
     dev->pin = irq;
     if (irq)
-        irq = PciRead8(dev->bus, dev->devfn, PCI_INTERRUPT_LINE);
+        irq = PciRead8(dev->busnr, dev->devfn, PCI_INTERRUPT_LINE);
     dev->irq = irq;
 };
 
 
-static int pci_setup_device(struct pci_dev *dev)
+int pci_setup_device(struct pci_dev *dev)
 {
     u32_t  class;
 
-    class = PciRead32(dev->bus, dev->devfn, PCI_CLASS_REVISION);
+    class = PciRead32(dev->busnr, dev->devfn, PCI_CLASS_REVISION);
     dev->revision = class & 0xff;
     class >>= 8;                                /* upper 3 bytes */
     dev->class = class;
@@ -236,8 +236,8 @@ static int pci_setup_device(struct pci_dev *dev)
                 goto bad;
             pci_read_irq(dev);
             pci_read_bases(dev, 6, PCI_ROM_ADDRESS);
-            dev->subsystem_vendor = PciRead16(dev->bus, dev->devfn,PCI_SUBSYSTEM_VENDOR_ID);
-            dev->subsystem_device = PciRead16(dev->bus, dev->devfn, PCI_SUBSYSTEM_ID);
+            dev->subsystem_vendor = PciRead16(dev->busnr, dev->devfn,PCI_SUBSYSTEM_VENDOR_ID);
+            dev->subsystem_device = PciRead16(dev->busnr, dev->devfn, PCI_SUBSYSTEM_ID);
 
             /*
              *      Do the ugly legacy mode stuff here rather than broken chip
@@ -249,7 +249,7 @@ static int pci_setup_device(struct pci_dev *dev)
             {
                 u8_t progif;
 
-                progif = PciRead8(dev->bus, dev->devfn,PCI_CLASS_PROG);
+                progif = PciRead8(dev->busnr, dev->devfn,PCI_CLASS_PROG);
                 if ((progif & 1) == 0)
                 {
                     dev->resource[0].start = 0x1F0;
@@ -287,11 +287,11 @@ static int pci_setup_device(struct pci_dev *dev)
                         goto bad;
                 pci_read_irq(dev);
                 pci_read_bases(dev, 1, 0);
-                dev->subsystem_vendor = PciRead16(dev->bus,
+                dev->subsystem_vendor = PciRead16(dev->busnr,
                                                   dev->devfn,
                                                   PCI_CB_SUBSYSTEM_VENDOR_ID);
 
-                dev->subsystem_device = PciRead16(dev->bus,
+                dev->subsystem_device = PciRead16(dev->busnr,
                                                   dev->devfn,
                                                   PCI_CB_SUBSYSTEM_ID);
                 break;
@@ -312,7 +312,7 @@ static int pci_setup_device(struct pci_dev *dev)
     return 0;
 };
 
-static pci_dev_t* pci_scan_device(u32_t bus, int devfn)
+static pci_dev_t* pci_scan_device(u32_t busnr, int devfn)
 {
     pci_dev_t  *dev;
 
@@ -321,7 +321,7 @@ static pci_dev_t* pci_scan_device(u32_t bus, int devfn)
 
     int     timeout = 10;
 
-    id = PciRead32(bus,devfn, PCI_VENDOR_ID);
+    id = PciRead32(busnr, devfn, PCI_VENDOR_ID);
 
     /* some broken boards return 0 or ~0 if a slot is empty: */
     if (id == 0xffffffff || id == 0x00000000 ||
@@ -334,18 +334,18 @@ static pci_dev_t* pci_scan_device(u32_t bus, int devfn)
         delay(timeout/10);
         timeout *= 2;
 
-        id = PciRead32(bus, devfn, PCI_VENDOR_ID);
+        id = PciRead32(busnr, devfn, PCI_VENDOR_ID);
 
         /* Card hasn't responded in 60 seconds?  Must be stuck. */
         if (timeout > 60 * 100)
         {
             printk(KERN_WARNING "Device %04x:%02x:%02x.%d not "
-                   "responding\n", bus,PCI_SLOT(devfn),PCI_FUNC(devfn));
+                   "responding\n", busnr,PCI_SLOT(devfn),PCI_FUNC(devfn));
             return NULL;
         }
     };
 
-    hdr = PciRead8(bus, devfn, PCI_HEADER_TYPE);
+    hdr = PciRead8(busnr, devfn, PCI_HEADER_TYPE);
 
     dev = (pci_dev_t*)kzalloc(sizeof(pci_dev_t), 0);
 
@@ -354,7 +354,7 @@ static pci_dev_t* pci_scan_device(u32_t bus, int devfn)
     if(unlikely(dev == NULL))
         return NULL;
 
-    dev->pci_dev.bus      = bus;
+    dev->pci_dev.busnr    = busnr;
     dev->pci_dev.devfn    = devfn;
     dev->pci_dev.hdr_type = hdr & 0x7f;
     dev->pci_dev.multifunction    = !!(hdr & 0x80);
@@ -505,9 +505,9 @@ int pci_find_capability(struct pci_dev *dev, int cap)
 {
     int pos;
 
-    pos = __pci_bus_find_cap_start(dev->bus, dev->devfn, dev->hdr_type);
+    pos = __pci_bus_find_cap_start(dev->busnr, dev->devfn, dev->hdr_type);
     if (pos)
-        pos = __pci_find_next_cap(dev->bus, dev->devfn, pos, cap);
+        pos = __pci_find_next_cap(dev->busnr, dev->devfn, pos, cap);
 
     return pos;
 }
@@ -646,7 +646,7 @@ int pcibios_enable_resources(struct pci_dev *dev, int mask)
     int  idx;
     struct resource *r;
 
-    cmd = PciRead16(dev->bus, dev->devfn, PCI_COMMAND);
+    cmd = PciRead16(dev->busnr, dev->devfn, PCI_COMMAND);
     old_cmd = cmd;
     for (idx = 0; idx < PCI_NUM_RESOURCES; idx++)
     {
@@ -674,7 +674,7 @@ int pcibios_enable_resources(struct pci_dev *dev, int mask)
     if (cmd != old_cmd) {
         printk("PCI: Enabling device %s (%04x -> %04x)\n",
                 pci_name(dev), old_cmd, cmd);
-        PciWrite16(dev->bus, dev->devfn, PCI_COMMAND, cmd);
+        PciWrite16(dev->busnr, dev->devfn, PCI_COMMAND, cmd);
     }
     return 0;
 }
diff --git a/drivers/video/drm/radeon/r600.c b/drivers/video/drm/radeon/r600.c
index 6de2cc9e9a..b24047af01 100644
--- a/drivers/video/drm/radeon/r600.c
+++ b/drivers/video/drm/radeon/r600.c
@@ -1179,6 +1179,7 @@ void r600_gpu_init(struct radeon_device *rdev)
 									       R6XX_MAX_BACKENDS_MASK) >> 16)),
 							(cc_rb_backend_disable >> 16));
 	rdev->config.r600.tile_config = tiling_config;
+	rdev->config.r600.backend_map = backend_map;
 	tiling_config |= BACKEND_MAP(backend_map);
 	WREG32(GB_TILING_CONFIG, tiling_config);
 	WREG32(DCP_TILING_CONFIG, tiling_config & 0xffff);
@@ -1729,9 +1730,6 @@ int r600_cp_resume(struct radeon_device *rdev)
 
 	/* set the wb address whether it's enabled or not */
 	WREG32(CP_RB_RPTR_ADDR,
-#ifdef __BIG_ENDIAN
-	       RB_RPTR_SWAP(2) |
-#endif
 	       ((rdev->wb.gpu_addr + RADEON_WB_CP_RPTR_OFFSET) & 0xFFFFFFFC));
 	WREG32(CP_RB_RPTR_ADDR_HI, upper_32_bits(rdev->wb.gpu_addr + RADEON_WB_CP_RPTR_OFFSET) & 0xFF);
 	WREG32(SCRATCH_ADDR, ((rdev->wb.gpu_addr + RADEON_WB_SCRATCH_OFFSET) >> 8) & 0xFFFFFFFF);
@@ -2437,10 +2435,6 @@ int r600_irq_init(struct radeon_device *rdev)
 	/* RPTR_REARM only works if msi's are enabled */
 	if (rdev->msi_enabled)
 		ih_cntl |= RPTR_REARM;
-
-#ifdef __BIG_ENDIAN
-	ih_cntl |= IH_MC_SWAP(IH_MC_SWAP_32BIT);
-#endif
 	WREG32(IH_CNTL, ih_cntl);
 
 	/* force the active interrupt state to all disabled */
@@ -2717,6 +2711,8 @@ static inline u32 r600_get_ih_wptr(struct radeon_device *rdev)
  * adjusted or added to on newer asics
  */
 
+#define DRM_DEBUG(...)
+
 int r600_irq_process(struct radeon_device *rdev)
 {
 	u32 wptr;
@@ -2729,9 +2725,13 @@ int r600_irq_process(struct radeon_device *rdev)
 	if (!rdev->ih.enabled || rdev->shutdown)
 		return IRQ_NONE;
 
+	/* No MSIs, need a dummy read to flush PCI DMAs */
+	if (!rdev->msi_enabled)
+		RREG32(IH_RB_WPTR);
+
 	wptr = r600_get_ih_wptr(rdev);
 	rptr = rdev->ih.rptr;
-	DRM_DEBUG("r600_irq_process start: rptr %d, wptr %d\n", rptr, wptr);
+//   DRM_DEBUG("r600_irq_process start: rptr %d, wptr %d\n", rptr, wptr);
 
 	spin_lock_irqsave(&rdev->ih.lock, flags);
 
@@ -2741,6 +2741,9 @@ int r600_irq_process(struct radeon_device *rdev)
 	}
 
 restart_ih:
+	/* Order reading of wptr vs. reading of IH ring data */
+	rmb();
+
 	/* display interrupts */
 	r600_irq_ack(rdev);
 
diff --git a/drivers/video/drm/radeon/r600_blit_kms.c b/drivers/video/drm/radeon/r600_blit_kms.c
index cd3e8b7df7..0bbd16f882 100644
--- a/drivers/video/drm/radeon/r600_blit_kms.c
+++ b/drivers/video/drm/radeon/r600_blit_kms.c
@@ -483,8 +483,6 @@ int r600_blit_init(struct radeon_device *rdev)
 	u32 packet2s[16];
 	int num_packet2s = 0;
 
-    ENTER();
-
 	/* pin copy shader into vram if already initialized */
 	if (rdev->r600_blit.shader_obj)
 		goto done;
@@ -562,7 +560,6 @@ done:
 	}
 //   radeon_ttm_set_active_vram_size(rdev, rdev->mc.real_vram_size);
 
-    LEAVE();
 
 	return 0;
 }
@@ -850,7 +847,7 @@ void r600_kms_video_blit(struct radeon_device *rdev,
     u64 vb_gpu_addr;
     u32 *vb;
 
-    DRM_DEBUG("emitting video copy\n");
+//    DRM_DEBUG("emitting video copy\n");
     vb = (u32 *)(rdev->r600_blit.vb_ib->ptr + rdev->r600_blit.vb_used);
 
     if ((rdev->r600_blit.vb_used + 48) > rdev->r600_blit.vb_total) {
@@ -909,8 +906,22 @@ extern struct radeon_device *main_device;
 int r600_video_blit(uint64_t src_offset, int  x, int y,
                     int w, int h, int pitch)
 {
-    int r;
     struct radeon_device *rdev = main_device;
+    static struct radeon_fence *fence;
+    unsigned long irq_flags;
+
+    int r;
+
+    if(fence == NULL)
+    {
+        r = radeon_fence_create(rdev, &fence);
+        if (r) {
+            printf("%s epic fail", __FUNCTION__);
+            return r;
+        }
+    };
+
+    fence->evnt = CreateEvent(NULL, 0);
 
     mutex_lock(&rdev->r600_blit.mutex);
     rdev->r600_blit.vb_ib = NULL;
@@ -922,10 +933,19 @@ int r600_video_blit(uint64_t src_offset, int  x, int y,
         return r;
     }
 
-
     r600_kms_video_blit(rdev, src_offset,x,y,w,h,pitch);
-    r600_blit_done_copy(rdev, NULL);
+    r600_blit_done_copy(rdev, fence);
     mutex_unlock(&rdev->r600_blit.mutex);
+
+    r = radeon_fence_wait(fence, false);
+
+    write_lock_irqsave(&rdev->fence_drv.lock, irq_flags);
+    list_del(&fence->list);
+    fence->emited = false;
+    fence->signaled = false;
+    write_unlock_irqrestore(&rdev->fence_drv.lock, irq_flags);
+
+    return r;
 };
 
 int r600_create_video(int w, int h, u32_t *outp)
@@ -965,8 +985,8 @@ int r600_create_video(int w, int h, u32_t *outp)
     outp[2] = uaddr;
     outp[3] = pitch;
 
-    dbgprintf("Create video surface %x, mapped at %x pitch %d\n",
-              (uint32_t)saddr, uaddr, pitch);
+//    dbgprintf("Create video surface %x, mapped at %x pitch %d\n",
+//              (uint32_t)saddr, uaddr, pitch);
     return 0;
 
 fail:
diff --git a/drivers/video/drm/radeon/radeon.h b/drivers/video/drm/radeon/radeon.h
index 1da24645d5..fdb5afc79e 100644
--- a/drivers/video/drm/radeon/radeon.h
+++ b/drivers/video/drm/radeon/radeon.h
@@ -1056,6 +1056,7 @@ struct r600_asic {
 	unsigned tiling_npipes;
 	unsigned tiling_group_size;
 	unsigned		tile_config;
+	unsigned		backend_map;
 	struct r100_gpu_lockup	lockup;
 };
 
@@ -1081,6 +1082,7 @@ struct rv770_asic {
 	unsigned tiling_npipes;
 	unsigned tiling_group_size;
 	unsigned		tile_config;
+	unsigned		backend_map;
 	struct r100_gpu_lockup	lockup;
 };
 
@@ -1107,6 +1109,7 @@ struct evergreen_asic {
 	unsigned tiling_npipes;
 	unsigned tiling_group_size;
 	unsigned tile_config;
+	unsigned backend_map;
 	struct r100_gpu_lockup	lockup;
 };
 
diff --git a/drivers/video/drm/radeon/radeon_asic.c b/drivers/video/drm/radeon/radeon_asic.c
index 3412a781d9..a20a78165c 100644
--- a/drivers/video/drm/radeon/radeon_asic.c
+++ b/drivers/video/drm/radeon/radeon_asic.c
@@ -320,6 +320,7 @@ static struct radeon_asic r420_asic = {
 	.hpd_sense = &r100_hpd_sense,
 	.hpd_set_polarity = &r100_hpd_set_polarity,
 	.ioctl_wait_idle = NULL,
+	.gui_idle = &r100_gui_idle,
 };
 
 static struct radeon_asic rs400_asic = {
@@ -358,6 +359,7 @@ static struct radeon_asic rs400_asic = {
 	.hpd_sense = &r100_hpd_sense,
 	.hpd_set_polarity = &r100_hpd_set_polarity,
 	.ioctl_wait_idle = NULL,
+	.gui_idle = &r100_gui_idle,
 };
 
 static struct radeon_asic rs600_asic = {
@@ -396,6 +398,7 @@ static struct radeon_asic rs600_asic = {
 	.hpd_sense = &rs600_hpd_sense,
 	.hpd_set_polarity = &rs600_hpd_set_polarity,
 	.ioctl_wait_idle = NULL,
+	.gui_idle = &r100_gui_idle,
 };
 
 static struct radeon_asic rs690_asic = {
@@ -434,6 +437,7 @@ static struct radeon_asic rs690_asic = {
 	.hpd_sense = &rs600_hpd_sense,
 	.hpd_set_polarity = &rs600_hpd_set_polarity,
 	.ioctl_wait_idle = NULL,
+	.gui_idle = &r100_gui_idle,
 };
 
 static struct radeon_asic rv515_asic = {
@@ -472,6 +476,7 @@ static struct radeon_asic rv515_asic = {
 	.hpd_sense = &rs600_hpd_sense,
 	.hpd_set_polarity = &rs600_hpd_set_polarity,
 	.ioctl_wait_idle = NULL,
+	.gui_idle = &r100_gui_idle,
 };
 
 static struct radeon_asic r520_asic = {
@@ -510,6 +515,7 @@ static struct radeon_asic r520_asic = {
 	.hpd_sense = &rs600_hpd_sense,
 	.hpd_set_polarity = &rs600_hpd_set_polarity,
 	.ioctl_wait_idle = NULL,
+	.gui_idle = &r100_gui_idle,
 };
 
 static struct radeon_asic r600_asic = {
@@ -529,7 +535,7 @@ static struct radeon_asic r600_asic = {
 	.fence_ring_emit = &r600_fence_ring_emit,
 //	.cs_parse = &r600_cs_parse,
 	.copy_blit = &r600_copy_blit,
-	.copy_dma = &r600_copy_blit,
+	.copy_dma = NULL,
 	.copy = &r600_copy_blit,
 	.get_engine_clock = &radeon_atom_get_engine_clock,
 	.set_engine_clock = &radeon_atom_set_engine_clock,
@@ -566,7 +572,7 @@ static struct radeon_asic rs780_asic = {
 	.fence_ring_emit = &r600_fence_ring_emit,
 //	.cs_parse = &r600_cs_parse,
 	.copy_blit = &r600_copy_blit,
-	.copy_dma = &r600_copy_blit,
+	.copy_dma = NULL,
 	.copy = &r600_copy_blit,
 	.get_engine_clock = &radeon_atom_get_engine_clock,
 	.set_engine_clock = &radeon_atom_set_engine_clock,
@@ -601,7 +607,7 @@ static struct radeon_asic rv770_asic = {
 	.fence_ring_emit = &r600_fence_ring_emit,
 //	.cs_parse = &r600_cs_parse,
 	.copy_blit = &r600_copy_blit,
-	.copy_dma = &r600_copy_blit,
+	.copy_dma = NULL,
 	.copy = &r600_copy_blit,
 	.get_engine_clock = &radeon_atom_get_engine_clock,
 	.set_engine_clock = &radeon_atom_set_engine_clock,
@@ -636,7 +642,7 @@ static struct radeon_asic evergreen_asic = {
 	.fence_ring_emit = &r600_fence_ring_emit,
 //	.cs_parse = &evergreen_cs_parse,
 	.copy_blit = &evergreen_copy_blit,
-	.copy_dma = &evergreen_copy_blit,
+	.copy_dma = NULL,
 	.copy = &evergreen_copy_blit,
 	.get_engine_clock = &radeon_atom_get_engine_clock,
 	.set_engine_clock = &radeon_atom_set_engine_clock,
@@ -672,7 +678,7 @@ static struct radeon_asic sumo_asic = {
 	.fence_ring_emit = &r600_fence_ring_emit,
 //	.cs_parse = &r600_cs_parse,
 	.copy_blit = &evergreen_copy_blit,
-	.copy_dma = &evergreen_copy_blit,
+	.copy_dma = NULL,
 	.copy = &evergreen_copy_blit,
 	.get_engine_clock = &radeon_atom_get_engine_clock,
 	.set_engine_clock = &radeon_atom_set_engine_clock,
@@ -707,7 +713,7 @@ static struct radeon_asic btc_asic = {
 	.fence_ring_emit = &r600_fence_ring_emit,
 //	.cs_parse = &evergreen_cs_parse,
 	.copy_blit = &evergreen_copy_blit,
-	.copy_dma = &evergreen_copy_blit,
+	.copy_dma = NULL,
 	.copy = &evergreen_copy_blit,
 	.get_engine_clock = &radeon_atom_get_engine_clock,
 	.set_engine_clock = &radeon_atom_set_engine_clock,
@@ -742,7 +748,7 @@ static struct radeon_asic cayman_asic = {
 	.fence_ring_emit = &r600_fence_ring_emit,
 //	.cs_parse = &evergreen_cs_parse,
 	.copy_blit = &evergreen_copy_blit,
-	.copy_dma = &evergreen_copy_blit,
+	.copy_dma = NULL,
 	.copy = &evergreen_copy_blit,
 	.get_engine_clock = &radeon_atom_get_engine_clock,
 	.set_engine_clock = &radeon_atom_set_engine_clock,
diff --git a/drivers/video/drm/radeon/radeon_clocks.c b/drivers/video/drm/radeon/radeon_clocks.c
index d64be21d03..8b6e590fde 100644
--- a/drivers/video/drm/radeon/radeon_clocks.c
+++ b/drivers/video/drm/radeon/radeon_clocks.c
@@ -96,7 +96,7 @@ uint32_t radeon_legacy_get_memory_clock(struct radeon_device *rdev)
  * Read XTAL (ref clock), SCLK and MCLK from Open Firmware device
  * tree. Hopefully, ATI OF driver is kind enough to fill these
  */
-static bool __devinit radeon_read_clocks_OF(struct drm_device *dev)
+static bool radeon_read_clocks_OF(struct drm_device *dev)
 {
 	struct radeon_device *rdev = dev->dev_private;
 	struct device_node *dp = rdev->pdev->dev.of_node;
diff --git a/drivers/video/drm/radeon/radeon_combios.c b/drivers/video/drm/radeon/radeon_combios.c
index 4e697706d0..9529590e03 100644
--- a/drivers/video/drm/radeon/radeon_combios.c
+++ b/drivers/video/drm/radeon/radeon_combios.c
@@ -779,7 +779,8 @@ void radeon_combios_i2c_init(struct radeon_device *rdev)
 				}
 			}
 		}
-	} else if (rdev->family >= CHIP_R200) {
+	} else if ((rdev->family == CHIP_R200) ||
+		   (rdev->family >= CHIP_R300)) {
 		/* 0x68 */
 		i2c = combios_setup_i2c_bus(rdev, DDC_MONID, 0, 0);
 		rdev->i2c_bus[3] = radeon_i2c_create(dev, &i2c, "MONID");
@@ -2556,6 +2557,7 @@ void radeon_combios_get_power_modes(struct radeon_device *rdev)
 	u16 offset, misc, misc2 = 0;
 	u8 rev, blocks, tmp;
 	int state_index = 0;
+	struct radeon_i2c_bus_rec i2c_bus;
 
 	rdev->pm.default_power_state_index = -1;
 
@@ -2574,7 +2576,6 @@ void radeon_combios_get_power_modes(struct radeon_device *rdev)
 	offset = combios_get_table_offset(dev, COMBIOS_OVERDRIVE_INFO_TABLE);
 	if (offset) {
 		u8 thermal_controller = 0, gpio = 0, i2c_addr = 0, clk_bit = 0, data_bit = 0;
-		struct radeon_i2c_bus_rec i2c_bus;
 
 		rev = RBIOS8(offset);
 
diff --git a/drivers/video/drm/radeon/radeon_connectors.c b/drivers/video/drm/radeon/radeon_connectors.c
index 84a31d1edd..40a44696a4 100644
--- a/drivers/video/drm/radeon/radeon_connectors.c
+++ b/drivers/video/drm/radeon/radeon_connectors.c
@@ -430,6 +430,45 @@ int radeon_connector_set_property(struct drm_connector *connector, struct drm_pr
 	return 0;
 }
 
+/*
+ * Some integrated ATI Radeon chipset implementations (e. g.
+ * Asus M2A-VM HDMI) may indicate the availability of a DDC,
+ * even when there's no monitor connected. For these connectors
+ * following DDC probe extension will be applied: check also for the
+ * availability of EDID with at least a correct EDID header. Only then,
+ * DDC is assumed to be available. This prevents drm_get_edid() and
+ * drm_edid_block_valid() from periodically dumping data and kernel
+ * errors into the logs and onto the terminal.
+ */
+static bool radeon_connector_needs_extended_probe(struct radeon_device *dev,
+				     uint32_t supported_device,
+				     int connector_type)
+{
+	/* Asus M2A-VM HDMI board sends data to i2c bus even,
+	 * if HDMI add-on card is not plugged in or HDMI is disabled in
+	 * BIOS. Valid DDC can only be assumed, if also a valid EDID header
+	 * can be retrieved via i2c bus during DDC probe */
+	if ((dev->pdev->device == 0x791e) &&
+	    (dev->pdev->subsystem_vendor == 0x1043) &&
+	    (dev->pdev->subsystem_device == 0x826d)) {
+		if ((connector_type == DRM_MODE_CONNECTOR_HDMIA) &&
+		    (supported_device == ATOM_DEVICE_DFP2_SUPPORT))
+			return true;
+	}
+	/* ECS A740GM-M with ATI RADEON 2100 sends data to i2c bus
+	 * for a DVI connector that is not implemented */
+	if ((dev->pdev->device == 0x796e) &&
+	    (dev->pdev->subsystem_vendor == 0x1019) &&
+	    (dev->pdev->subsystem_device == 0x2615)) {
+		if ((connector_type == DRM_MODE_CONNECTOR_DVID) &&
+		    (supported_device == ATOM_DEVICE_DFP2_SUPPORT))
+			return true;
+	}
+
+	/* Default: no EDID header probe required for DDC probing */
+	return false;
+}
+
 static void radeon_fixup_lvds_native_mode(struct drm_encoder *encoder,
 					  struct drm_connector *connector)
 {
@@ -661,7 +700,8 @@ radeon_vga_detect(struct drm_connector *connector, bool force)
 		ret = connector_status_disconnected;
 
 	if (radeon_connector->ddc_bus)
-	    dret = radeon_ddc_probe(radeon_connector);
+		dret = radeon_ddc_probe(radeon_connector,
+					radeon_connector->requires_extended_probe);
 	if (dret) {
 		if (radeon_connector->edid) {
 			kfree(radeon_connector->edid);
@@ -833,7 +873,8 @@ radeon_dvi_detect(struct drm_connector *connector, bool force)
 	bool dret = false;
 
 	if (radeon_connector->ddc_bus)
-	dret = radeon_ddc_probe(radeon_connector);
+		dret = radeon_ddc_probe(radeon_connector,
+					radeon_connector->requires_extended_probe);
 	if (dret) {
 		if (radeon_connector->edid) {
 			kfree(radeon_connector->edid);
@@ -1251,7 +1292,8 @@ radeon_dp_detect(struct drm_connector *connector, bool force)
 			if (radeon_dp_getdpcd(radeon_connector))
 				ret = connector_status_connected;
 		} else {
-			if (radeon_ddc_probe(radeon_connector))
+				if (radeon_ddc_probe(radeon_connector,
+						     radeon_connector->requires_extended_probe))
 			ret = connector_status_connected;
 		}
 	}
@@ -1406,6 +1448,9 @@ radeon_add_atom_connector(struct drm_device *dev,
 	radeon_connector->shared_ddc = shared_ddc;
 	radeon_connector->connector_object_id = connector_object_id;
 	radeon_connector->hpd = *hpd;
+	radeon_connector->requires_extended_probe =
+		radeon_connector_needs_extended_probe(rdev, supported_device,
+							connector_type);
 	radeon_connector->router = *router;
 	if (router->ddc_valid || router->cd_valid) {
 		radeon_connector->router_bus = radeon_i2c_lookup(rdev, &router->i2c_info);
@@ -1752,6 +1797,9 @@ radeon_add_legacy_connector(struct drm_device *dev,
 	radeon_connector->devices = supported_device;
 	radeon_connector->connector_object_id = connector_object_id;
 	radeon_connector->hpd = *hpd;
+	radeon_connector->requires_extended_probe =
+		radeon_connector_needs_extended_probe(rdev, supported_device,
+							connector_type);
 	switch (connector_type) {
 	case DRM_MODE_CONNECTOR_VGA:
 		drm_connector_init(dev, &radeon_connector->base, &radeon_vga_connector_funcs, connector_type);
diff --git a/drivers/video/drm/radeon/radeon_device.c b/drivers/video/drm/radeon/radeon_device.c
index 55279be2ce..653b5a69c7 100644
--- a/drivers/video/drm/radeon/radeon_device.c
+++ b/drivers/video/drm/radeon/radeon_device.c
@@ -38,7 +38,7 @@
 #include <drm/drm_pciids.h>
 
 
-int radeon_no_wb;
+int radeon_no_wb   =  1;
 int radeon_modeset = -1;
 int radeon_dynclks = -1;
 int radeon_r4xx_atom = 0;
@@ -56,6 +56,7 @@ int radeon_hw_i2c = 0;
 int radeon_pcie_gen2 = 0;
 int radeon_disp_priority = 0;
 
+int irq_override = 0;
 
 
 extern display_t *rdisplay;
@@ -899,6 +900,16 @@ int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent)
     else
         init_display(dev->dev_private, &usermode);
 
+
+    uint32_t route0 = PciRead32(0, 31<<3, 0x60);
+
+    uint32_t route1 = PciRead32(0, 31<<3, 0x68);
+
+    uint8_t elcr0 = in8(0x4D0);
+    uint8_t elcr1 = in8(0x4D1);
+
+    dbgprintf("pci route: %x %x elcr: %x %x\n", route0, route1, elcr0, elcr1);
+
     LEAVE();
 
     return 0;
@@ -1042,12 +1053,7 @@ int _stdcall display_handler(ioctl_t *io)
 static char  log[256];
 static pci_dev_t device;
 
-u32_t
-#if defined(__GNUC__) && __GNUC__ >= 4
-// has sense only if -fwhole-program is used, like Makefile.lto
-__attribute__((externally_visible))
-#endif
-drvEntry(int action, char *cmdline)
+u32_t drvEntry(int action, char *cmdline)
 {
     struct radeon_device *rdev = NULL;
 
diff --git a/drivers/video/drm/radeon/radeon_display.c b/drivers/video/drm/radeon/radeon_display.c
index 98e595703e..0f34b71457 100644
--- a/drivers/video/drm/radeon/radeon_display.c
+++ b/drivers/video/drm/radeon/radeon_display.c
@@ -515,8 +515,17 @@ static int radeon_ddc_dump(struct drm_connector *connector)
 	if (!radeon_connector->ddc_bus)
 		return -1;
 	edid = drm_get_edid(connector, &radeon_connector->ddc_bus->adapter);
+	/* Log EDID retrieval status here. In particular with regard to
+	 * connectors with requires_extended_probe flag set, that will prevent
+	 * function radeon_dvi_detect() to fetch EDID on this connector,
+	 * as long as there is no valid EDID header found */
 	if (edid) {
+		DRM_INFO("Radeon display connector %s: Found valid EDID",
+				drm_get_connector_name(connector));
 		kfree(edid);
+	} else {
+		DRM_INFO("Radeon display connector %s: No monitor connected or invalid EDID",
+				drm_get_connector_name(connector));
 	}
 	return ret;
 }
@@ -1014,8 +1023,6 @@ int radeon_modeset_init(struct radeon_device *rdev)
 	int i;
 	int ret;
 
-    ENTER();
-
 	drm_mode_config_init(rdev->ddev);
 	rdev->mode_info.mode_config_initialized = true;
 
@@ -1072,8 +1079,6 @@ int radeon_modeset_init(struct radeon_device *rdev)
 	radeon_fbdev_init(rdev);
 //   drm_kms_helper_poll_init(rdev->ddev);
 
-    LEAVE();
-
 	return 0;
 }
 
diff --git a/drivers/video/drm/radeon/radeon_encoders.c b/drivers/video/drm/radeon/radeon_encoders.c
index 28ba395c98..f16185323b 100644
--- a/drivers/video/drm/radeon/radeon_encoders.c
+++ b/drivers/video/drm/radeon/radeon_encoders.c
@@ -2323,6 +2323,9 @@ radeon_add_atom_encoder(struct drm_device *dev,
 	default:
 	encoder->possible_crtcs = 0x3;
 		break;
+	case 4:
+		encoder->possible_crtcs = 0xf;
+		break;
 	case 6:
 		encoder->possible_crtcs = 0x3f;
 		break;
diff --git a/drivers/video/drm/radeon/radeon_i2c.c b/drivers/video/drm/radeon/radeon_i2c.c
index 63a8bd7b92..eb20f4c290 100644
--- a/drivers/video/drm/radeon/radeon_i2c.c
+++ b/drivers/video/drm/radeon/radeon_i2c.c
@@ -32,17 +32,17 @@
  * radeon_ddc_probe
  *
  */
-bool radeon_ddc_probe(struct radeon_connector *radeon_connector)
+bool radeon_ddc_probe(struct radeon_connector *radeon_connector, bool requires_extended_probe)
 {
-	u8 out_buf[] = { 0x0, 0x0};
-	u8 buf[2];
+	u8 out = 0x0;
+	u8 buf[8];
 	int ret;
 	struct i2c_msg msgs[] = {
 		{
 			.addr = 0x50,
 			.flags = 0,
 			.len = 1,
-			.buf = out_buf,
+			.buf = &out,
 		},
 		{
 			.addr = 0x50,
@@ -52,15 +52,31 @@ bool radeon_ddc_probe(struct radeon_connector *radeon_connector)
 		}
 	};
 
+	/* Read 8 bytes from i2c for extended probe of EDID header */
+	if (requires_extended_probe)
+		msgs[1].len = 8;
+
 	/* on hw with routers, select right port */
 	if (radeon_connector->router.ddc_valid)
 		radeon_router_select_ddc_port(radeon_connector);
 
 	ret = i2c_transfer(&radeon_connector->ddc_bus->adapter, msgs, 2);
-	if (ret == 2)
+	if (ret != 2)
+		/* Couldn't find an accessible DDC on this connector */
+		return false;
+	if (requires_extended_probe) {
+		/* Probe also for valid EDID header
+		 * EDID header starts with:
+		 * 0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00.
+		 * Only the first 6 bytes must be valid as
+		 * drm_edid_block_valid() can fix the last 2 bytes */
+		if (drm_edid_header_is_valid(buf) < 6) {
+			/* Couldn't find an accessible EDID on this
+			 * connector */
+			return false;
+		}
+	}
 		return true;
-
-	return false;
 }
 
 /* bit banging i2c */
diff --git a/drivers/video/drm/radeon/radeon_irq_kms.c b/drivers/video/drm/radeon/radeon_irq_kms.c
index 9a87383a99..b99ed49919 100644
--- a/drivers/video/drm/radeon/radeon_irq_kms.c
+++ b/drivers/video/drm/radeon/radeon_irq_kms.c
@@ -34,57 +34,7 @@
 
 struct radeon_device *main_device;
 
-#if 0
-
-irqreturn_t radeon_driver_irq_handler_kms(DRM_IRQ_ARGS)
-{
-	struct drm_device *dev = (struct drm_device *) arg;
-	struct radeon_device *rdev = dev->dev_private;
-
-	return radeon_irq_process(rdev);
-}
-
-/*
- * Handle hotplug events outside the interrupt handler proper.
- */
-static void radeon_hotplug_work_func(struct work_struct *work)
-{
-	struct radeon_device *rdev = container_of(work, struct radeon_device,
-						  hotplug_work);
-	struct drm_device *dev = rdev->ddev;
-	struct drm_mode_config *mode_config = &dev->mode_config;
-	struct drm_connector *connector;
-
-	if (mode_config->num_connector) {
-		list_for_each_entry(connector, &mode_config->connector_list, head)
-			radeon_connector_hotplug(connector);
-	}
-	/* Just fire off a uevent and let userspace tell us what to do */
-	drm_helper_hpd_irq_event(dev);
-}
-
-
-void radeon_driver_irq_uninstall_kms(struct drm_device *dev)
-{
-	struct radeon_device *rdev = dev->dev_private;
-	unsigned i;
-
-	if (rdev == NULL) {
-		return;
-	}
-	/* Disable *all* interrupts */
-	rdev->irq.sw_int = false;
-	rdev->irq.gui_idle = false;
-	for (i = 0; i < rdev->num_crtc; i++)
-		rdev->irq.crtc_vblank_int[i] = false;
-	for (i = 0; i < 6; i++) {
-		rdev->irq.hpd[i] = false;
-		rdev->irq.pflip[i] = false;
-	}
-	radeon_irq_set(rdev);
-}
-
-#endif
+extern int irq_override;
 
 void irq_handler_kms()
 {
@@ -145,7 +95,10 @@ int radeon_irq_kms_init(struct radeon_device *rdev)
 
     radeon_irq_preinstall(rdev);
 
-    irq_line = rdev->pdev->irq;
+    if (irq_override)
+        irq_line = irq_override;
+    else
+        irq_line = rdev->pdev->irq;
 
     dbgprintf("%s install irq %d\n", __FUNCTION__, irq_line);
 
@@ -190,36 +143,4 @@ void radeon_irq_kms_sw_irq_put(struct radeon_device *rdev)
 	spin_unlock_irqrestore(&rdev->irq.sw_lock, irqflags);
 }
 
-#if 0
-void radeon_irq_kms_pflip_irq_get(struct radeon_device *rdev, int crtc)
-{
-	unsigned long irqflags;
 
-	if (crtc < 0 || crtc >= rdev->num_crtc)
-		return;
-
-	spin_lock_irqsave(&rdev->irq.pflip_lock[crtc], irqflags);
-	if (rdev->ddev->irq_enabled && (++rdev->irq.pflip_refcount[crtc] == 1)) {
-		rdev->irq.pflip[crtc] = true;
-		radeon_irq_set(rdev);
-	}
-	spin_unlock_irqrestore(&rdev->irq.pflip_lock[crtc], irqflags);
-}
-
-void radeon_irq_kms_pflip_irq_put(struct radeon_device *rdev, int crtc)
-{
-	unsigned long irqflags;
-
-	if (crtc < 0 || crtc >= rdev->num_crtc)
-		return;
-
-	spin_lock_irqsave(&rdev->irq.pflip_lock[crtc], irqflags);
-	BUG_ON(rdev->ddev->irq_enabled && rdev->irq.pflip_refcount[crtc] <= 0);
-	if (rdev->ddev->irq_enabled && (--rdev->irq.pflip_refcount[crtc] == 0)) {
-		rdev->irq.pflip[crtc] = false;
-		radeon_irq_set(rdev);
-	}
-	spin_unlock_irqrestore(&rdev->irq.pflip_lock[crtc], irqflags);
-}
-
-#endif
diff --git a/drivers/video/drm/radeon/radeon_mode.h b/drivers/video/drm/radeon/radeon_mode.h
index 164e9129d7..0e33ea6f56 100644
--- a/drivers/video/drm/radeon/radeon_mode.h
+++ b/drivers/video/drm/radeon/radeon_mode.h
@@ -280,6 +280,7 @@ struct radeon_crtc {
 	fixed20_12 hsc;
 	struct drm_display_mode native_mode;
 	int pll_id;
+	int deferred_flip_completion;
 };
 
 struct radeon_encoder_primary_dac {
@@ -435,6 +436,9 @@ struct radeon_connector {
 	struct radeon_i2c_chan *ddc_bus;
 	/* some systems have an hdmi and vga port with a shared ddc line */
 	bool shared_ddc;
+	/* for some Radeon chip families we apply an additional EDID header
+	   check as part of the DDC probe */
+	bool requires_extended_probe;
 	bool use_digital;
 	/* we need to mind the EDID between detect
 	   and get modes due to analog/digital/tvencoder */
@@ -511,7 +515,8 @@ extern void radeon_i2c_put_byte(struct radeon_i2c_chan *i2c,
 				   u8 val);
 extern void radeon_router_select_ddc_port(struct radeon_connector *radeon_connector);
 extern void radeon_router_select_cd_port(struct radeon_connector *radeon_connector);
-extern bool radeon_ddc_probe(struct radeon_connector *radeon_connector);
+extern bool radeon_ddc_probe(struct radeon_connector *radeon_connector,
+			bool requires_extended_probe);
 extern int radeon_ddc_get_modes(struct radeon_connector *radeon_connector);
 
 extern struct drm_encoder *radeon_best_encoder(struct drm_connector *connector);
diff --git a/drivers/video/drm/radeon/radeon_reg.h b/drivers/video/drm/radeon/radeon_reg.h
index df348871ce..404b4af74d 100644
--- a/drivers/video/drm/radeon/radeon_reg.h
+++ b/drivers/video/drm/radeon/radeon_reg.h
@@ -3295,7 +3295,7 @@
 #	define RADEON_RB_BUFSZ_MASK		(0x3f << 0)
 #	define RADEON_RB_BLKSZ_SHIFT		8
 #	define RADEON_RB_BLKSZ_MASK		(0x3f << 8)
-#	define RADEON_BUF_SWAP_32BIT		(1 << 17)
+#	define RADEON_BUF_SWAP_32BIT		(2 << 16)
 #	define RADEON_MAX_FETCH_SHIFT		18
 #	define RADEON_MAX_FETCH_MASK		(0x3 << 18)
 #	define RADEON_RB_NO_UPDATE		(1 << 27)
diff --git a/drivers/video/drm/radeon/rs600.c b/drivers/video/drm/radeon/rs600.c
index e4eeb4e09b..6080af30b4 100644
--- a/drivers/video/drm/radeon/rs600.c
+++ b/drivers/video/drm/radeon/rs600.c
@@ -361,7 +361,7 @@ int rs600_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr)
 	addr = addr & 0xFFFFFFFFFFFFF000ULL;
 	addr |= R600_PTE_VALID | R600_PTE_SYSTEM | R600_PTE_SNOOPED;
 	addr |= R600_PTE_READABLE | R600_PTE_WRITEABLE;
-	writeq(addr, ((void __iomem *)ptr) + (i * 8));
+	writeq(addr, ptr + (i * 8));
 	return 0;
 }
 
diff --git a/drivers/video/drm/radeon/rv770.c b/drivers/video/drm/radeon/rv770.c
index ae22de669e..cef1cf5f66 100644
--- a/drivers/video/drm/radeon/rv770.c
+++ b/drivers/video/drm/radeon/rv770.c
@@ -701,6 +701,7 @@ static void rv770_gpu_init(struct radeon_device *rdev)
 								(cc_rb_backend_disable >> 16));
 
 	rdev->config.rv770.tile_config = gb_tiling_config;
+	rdev->config.rv770.backend_map = backend_map;
 	gb_tiling_config |= BACKEND_MAP(backend_map);
 
 	WREG32(GB_TILING_CONFIG, gb_tiling_config);