diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 96e9631..fd033eb 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -30,7 +30,6 @@
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/i2c.h>
-#include <linux/i2c-algo-bit.h>
 #include "drmP.h"
 #include "drm_edid.h"
 #include "drm_edid_modes.h"
diff --git a/drivers/gpu/drm/i915/dvo_ch7017.c b/drivers/gpu/drm/i915/dvo_ch7017.c
index 14d5980..0bc8ce1 100644
--- a/drivers/gpu/drm/i915/dvo_ch7017.c
+++ b/drivers/gpu/drm/i915/dvo_ch7017.c
@@ -168,7 +168,6 @@
 static bool ch7017_read(struct intel_dvo_device *dvo, int addr, uint8_t *val)
 {
 	struct i2c_adapter *adapter = dvo->i2c_bus;
-	struct intel_i2c_chan *i2cbus = container_of(adapter, struct intel_i2c_chan, adapter);
 	u8 out_buf[2];
 	u8 in_buf[2];
 
@@ -190,7 +189,7 @@
 	out_buf[0] = addr;
 	out_buf[1] = 0;
 
-	if (i2c_transfer(&i2cbus->adapter, msgs, 2) == 2) {
+	if (i2c_transfer(adapter, msgs, 2) == 2) {
 		*val= in_buf[0];
 		return true;
 	};
@@ -201,7 +200,6 @@
 static bool ch7017_write(struct intel_dvo_device *dvo, int addr, uint8_t val)
 {
 	struct i2c_adapter *adapter = dvo->i2c_bus;
-	struct intel_i2c_chan *i2cbus = container_of(adapter, struct intel_i2c_chan, adapter);
 	uint8_t out_buf[2];
 	struct i2c_msg msg = {
 		.addr = dvo->slave_addr,
@@ -213,7 +211,7 @@
 	out_buf[0] = addr;
 	out_buf[1] = val;
 
-	if (i2c_transfer(&i2cbus->adapter, &msg, 1) == 1)
+	if (i2c_transfer(adapter, &msg, 1) == 1)
 		return true;
 
 	return false;
@@ -223,7 +221,6 @@
 static bool ch7017_init(struct intel_dvo_device *dvo,
 			struct i2c_adapter *adapter)
 {
-	struct intel_i2c_chan *i2cbus = container_of(adapter, struct intel_i2c_chan, adapter);
 	struct ch7017_priv *priv;
 	uint8_t val;
 
@@ -242,7 +239,7 @@
 	    val != CH7019_DEVICE_ID_VALUE) {
 		DRM_DEBUG_KMS("ch701x not detected, got %d: from %s "
 				"Slave %d.\n",
-			  val, i2cbus->adapter.name,dvo->slave_addr);
+			  val, adapter->name,dvo->slave_addr);
 		goto fail;
 	}
 
diff --git a/drivers/gpu/drm/i915/dvo_ch7xxx.c b/drivers/gpu/drm/i915/dvo_ch7xxx.c
index 6f1944b..7eaa94e 100644
--- a/drivers/gpu/drm/i915/dvo_ch7xxx.c
+++ b/drivers/gpu/drm/i915/dvo_ch7xxx.c
@@ -113,7 +113,6 @@
 {
 	struct ch7xxx_priv *ch7xxx= dvo->dev_priv;
 	struct i2c_adapter *adapter = dvo->i2c_bus;
-	struct intel_i2c_chan *i2cbus = container_of(adapter, struct intel_i2c_chan, adapter);
 	u8 out_buf[2];
 	u8 in_buf[2];
 
@@ -135,14 +134,14 @@
 	out_buf[0] = addr;
 	out_buf[1] = 0;
 
-	if (i2c_transfer(&i2cbus->adapter, msgs, 2) == 2) {
+	if (i2c_transfer(adapter, msgs, 2) == 2) {
 		*ch = in_buf[0];
 		return true;
 	};
 
 	if (!ch7xxx->quiet) {
 		DRM_DEBUG_KMS("Unable to read register 0x%02x from %s:%02x.\n",
-			  addr, i2cbus->adapter.name, dvo->slave_addr);
+			  addr, adapter->name, dvo->slave_addr);
 	}
 	return false;
 }
@@ -152,7 +151,6 @@
 {
 	struct ch7xxx_priv *ch7xxx = dvo->dev_priv;
 	struct i2c_adapter *adapter = dvo->i2c_bus;
-	struct intel_i2c_chan *i2cbus = container_of(adapter, struct intel_i2c_chan, adapter);
 	uint8_t out_buf[2];
 	struct i2c_msg msg = {
 		.addr = dvo->slave_addr,
@@ -164,12 +162,12 @@
 	out_buf[0] = addr;
 	out_buf[1] = ch;
 
-	if (i2c_transfer(&i2cbus->adapter, &msg, 1) == 1)
+	if (i2c_transfer(adapter, &msg, 1) == 1)
 		return true;
 
 	if (!ch7xxx->quiet) {
 		DRM_DEBUG_KMS("Unable to write register 0x%02x to %s:%d.\n",
-			  addr, i2cbus->adapter.name, dvo->slave_addr);
+			  addr, adapter->name, dvo->slave_addr);
 	}
 
 	return false;
diff --git a/drivers/gpu/drm/i915/dvo_ivch.c b/drivers/gpu/drm/i915/dvo_ivch.c
index a2ec3f4..a12ed94 100644
--- a/drivers/gpu/drm/i915/dvo_ivch.c
+++ b/drivers/gpu/drm/i915/dvo_ivch.c
@@ -167,7 +167,6 @@
 {
 	struct ivch_priv *priv = dvo->dev_priv;
 	struct i2c_adapter *adapter = dvo->i2c_bus;
-	struct intel_i2c_chan *i2cbus = container_of(adapter, struct intel_i2c_chan, adapter);
 	u8 out_buf[1];
 	u8 in_buf[2];
 
@@ -193,7 +192,7 @@
 
 	out_buf[0] = addr;
 
-	if (i2c_transfer(&i2cbus->adapter, msgs, 3) == 3) {
+	if (i2c_transfer(adapter, msgs, 3) == 3) {
 		*data = (in_buf[1] << 8) | in_buf[0];
 		return true;
 	};
@@ -201,7 +200,7 @@
 	if (!priv->quiet) {
 		DRM_DEBUG_KMS("Unable to read register 0x%02x from "
 				"%s:%02x.\n",
-			  addr, i2cbus->adapter.name, dvo->slave_addr);
+			  addr, adapter->name, dvo->slave_addr);
 	}
 	return false;
 }
@@ -211,7 +210,6 @@
 {
 	struct ivch_priv *priv = dvo->dev_priv;
 	struct i2c_adapter *adapter = dvo->i2c_bus;
-	struct intel_i2c_chan *i2cbus = container_of(adapter, struct intel_i2c_chan, adapter);
 	u8 out_buf[3];
 	struct i2c_msg msg = {
 		.addr = dvo->slave_addr,
@@ -224,12 +222,12 @@
 	out_buf[1] = data & 0xff;
 	out_buf[2] = data >> 8;
 
-	if (i2c_transfer(&i2cbus->adapter, &msg, 1) == 1)
+	if (i2c_transfer(adapter, &msg, 1) == 1)
 		return true;
 
 	if (!priv->quiet) {
 		DRM_DEBUG_KMS("Unable to write register 0x%02x to %s:%d.\n",
-			  addr, i2cbus->adapter.name, dvo->slave_addr);
+			  addr, adapter->name, dvo->slave_addr);
 	}
 
 	return false;
diff --git a/drivers/gpu/drm/i915/dvo_sil164.c b/drivers/gpu/drm/i915/dvo_sil164.c
index 9b8e676..e4b4091d 100644
--- a/drivers/gpu/drm/i915/dvo_sil164.c
+++ b/drivers/gpu/drm/i915/dvo_sil164.c
@@ -69,7 +69,6 @@
 {
 	struct sil164_priv *sil = dvo->dev_priv;
 	struct i2c_adapter *adapter = dvo->i2c_bus;
-	struct intel_i2c_chan *i2cbus = container_of(adapter, struct intel_i2c_chan, adapter);
 	u8 out_buf[2];
 	u8 in_buf[2];
 
@@ -91,14 +90,14 @@
 	out_buf[0] = addr;
 	out_buf[1] = 0;
 
-	if (i2c_transfer(&i2cbus->adapter, msgs, 2) == 2) {
+	if (i2c_transfer(adapter, msgs, 2) == 2) {
 		*ch = in_buf[0];
 		return true;
 	};
 
 	if (!sil->quiet) {
 		DRM_DEBUG_KMS("Unable to read register 0x%02x from %s:%02x.\n",
-			  addr, i2cbus->adapter.name, dvo->slave_addr);
+			  addr, adapter->name, dvo->slave_addr);
 	}
 	return false;
 }
@@ -107,7 +106,6 @@
 {
 	struct sil164_priv *sil= dvo->dev_priv;
 	struct i2c_adapter *adapter = dvo->i2c_bus;
-	struct intel_i2c_chan *i2cbus = container_of(adapter, struct intel_i2c_chan, adapter);
 	uint8_t out_buf[2];
 	struct i2c_msg msg = {
 		.addr = dvo->slave_addr,
@@ -119,12 +117,12 @@
 	out_buf[0] = addr;
 	out_buf[1] = ch;
 
-	if (i2c_transfer(&i2cbus->adapter, &msg, 1) == 1)
+	if (i2c_transfer(adapter, &msg, 1) == 1)
 		return true;
 
 	if (!sil->quiet) {
 		DRM_DEBUG_KMS("Unable to write register 0x%02x to %s:%d.\n",
-			  addr, i2cbus->adapter.name, dvo->slave_addr);
+			  addr, adapter->name, dvo->slave_addr);
 	}
 
 	return false;
diff --git a/drivers/gpu/drm/i915/dvo_tfp410.c b/drivers/gpu/drm/i915/dvo_tfp410.c
index 56f6642..8ab2855 100644
--- a/drivers/gpu/drm/i915/dvo_tfp410.c
+++ b/drivers/gpu/drm/i915/dvo_tfp410.c
@@ -94,7 +94,6 @@
 {
 	struct tfp410_priv *tfp = dvo->dev_priv;
 	struct i2c_adapter *adapter = dvo->i2c_bus;
-	struct intel_i2c_chan *i2cbus = container_of(adapter, struct intel_i2c_chan, adapter);
 	u8 out_buf[2];
 	u8 in_buf[2];
 
@@ -116,14 +115,14 @@
 	out_buf[0] = addr;
 	out_buf[1] = 0;
 
-	if (i2c_transfer(&i2cbus->adapter, msgs, 2) == 2) {
+	if (i2c_transfer(adapter, msgs, 2) == 2) {
 		*ch = in_buf[0];
 		return true;
 	};
 
 	if (!tfp->quiet) {
 		DRM_DEBUG_KMS("Unable to read register 0x%02x from %s:%02x.\n",
-			  addr, i2cbus->adapter.name, dvo->slave_addr);
+			  addr, adapter->name, dvo->slave_addr);
 	}
 	return false;
 }
@@ -132,7 +131,6 @@
 {
 	struct tfp410_priv *tfp = dvo->dev_priv;
 	struct i2c_adapter *adapter = dvo->i2c_bus;
-	struct intel_i2c_chan *i2cbus = container_of(adapter, struct intel_i2c_chan, adapter);
 	uint8_t out_buf[2];
 	struct i2c_msg msg = {
 		.addr = dvo->slave_addr,
@@ -144,12 +142,12 @@
 	out_buf[0] = addr;
 	out_buf[1] = ch;
 
-	if (i2c_transfer(&i2cbus->adapter, &msg, 1) == 1)
+	if (i2c_transfer(adapter, &msg, 1) == 1)
 		return true;
 
 	if (!tfp->quiet) {
 		DRM_DEBUG_KMS("Unable to write register 0x%02x to %s:%d.\n",
-			  addr, i2cbus->adapter.name, dvo->slave_addr);
+			  addr, adapter->name, dvo->slave_addr);
 	}
 
 	return false;
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 7c7d1bc..39aaffe 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -2001,6 +2001,7 @@
 
 	/* Try to make sure MCHBAR is enabled before poking at it */
 	intel_setup_mchbar(dev);
+	intel_setup_gmbus(dev);
 	intel_opregion_setup(dev);
 
 	i915_gem_load(dev);
@@ -2155,6 +2156,7 @@
 		intel_cleanup_overlay(dev);
 	}
 
+	intel_teardown_gmbus(dev);
 	intel_teardown_mchbar(dev);
 
 	destroy_workqueue(dev_priv->wq);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index b0692c4..cf08128 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -34,6 +34,7 @@
 #include "intel_bios.h"
 #include "intel_ringbuffer.h"
 #include <linux/io-mapping.h>
+#include <linux/i2c.h>
 #include <drm/intel-gtt.h>
 
 /* General customization:
@@ -246,6 +247,12 @@
 
 	void __iomem *regs;
 
+	struct intel_gmbus {
+		struct i2c_adapter adapter;
+		struct i2c_adapter *force_bitbanging;
+		int pin;
+	} *gmbus;
+
 	struct pci_dev *bridge_dev;
 	struct intel_ring_buffer render_ring;
 	struct intel_ring_buffer bsd_ring;
@@ -339,7 +346,7 @@
 
 	struct notifier_block lid_notifier;
 
-	int crt_ddc_bus; /* 0 = unknown, else GPIO to use for CRT DDC */
+	int crt_ddc_pin;
 	struct drm_i915_fence_reg fence_regs[16]; /* assume 965 */
 	int fence_reg_start; /* 4 if userland hasn't ioctl'd us yet */
 	int num_fence_regs; /* 8 on pre-965, 16 otherwise */
@@ -1070,6 +1077,11 @@
 extern int i915_save_state(struct drm_device *dev);
 extern int i915_restore_state(struct drm_device *dev);
 
+/* intel_i2c.c */
+extern int intel_setup_gmbus(struct drm_device *dev);
+extern void intel_teardown_gmbus(struct drm_device *dev);
+extern void intel_i2c_reset(struct drm_device *dev);
+
 /* intel_opregion.c */
 extern int intel_opregion_setup(struct drm_device *dev);
 #ifdef CONFIG_ACPI
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index fd229ab..18e3749 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -583,12 +583,51 @@
 # define GPIO_DATA_VAL_IN		(1 << 12)
 # define GPIO_DATA_PULLUP_DISABLE	(1 << 13)
 
-#define GMBUS0			0x5100
-#define GMBUS1			0x5104
-#define GMBUS2			0x5108
-#define GMBUS3			0x510c
-#define GMBUS4			0x5110
-#define GMBUS5			0x5120
+#define GMBUS0			0x5100 /* clock/port select */
+#define   GMBUS_RATE_100KHZ	(0<<8)
+#define   GMBUS_RATE_50KHZ	(1<<8)
+#define   GMBUS_RATE_400KHZ	(2<<8) /* reserved on Pineview */
+#define   GMBUS_RATE_1MHZ	(3<<8) /* reserved on Pineview */
+#define   GMBUS_HOLD_EXT	(1<<7) /* 300ns hold time, rsvd on Pineview */
+#define   GMBUS_PORT_DISABLED	0
+#define   GMBUS_PORT_SSC	1
+#define   GMBUS_PORT_VGADDC	2
+#define   GMBUS_PORT_PANEL	3
+#define   GMBUS_PORT_DPC	4 /* HDMIC */
+#define   GMBUS_PORT_DPB	5 /* SDVO, HDMIB */
+				  /* 6 reserved */
+#define   GMBUS_PORT_DPD	7 /* HDMID */
+#define   GMBUS_NUM_PORTS       8
+#define GMBUS1			0x5104 /* command/status */
+#define   GMBUS_SW_CLR_INT	(1<<31)
+#define   GMBUS_SW_RDY		(1<<30)
+#define   GMBUS_ENT		(1<<29) /* enable timeout */
+#define   GMBUS_CYCLE_NONE	(0<<25)
+#define   GMBUS_CYCLE_WAIT	(1<<25)
+#define   GMBUS_CYCLE_INDEX	(2<<25)
+#define   GMBUS_CYCLE_STOP	(4<<25)
+#define   GMBUS_BYTE_COUNT_SHIFT 16
+#define   GMBUS_SLAVE_INDEX_SHIFT 8
+#define   GMBUS_SLAVE_ADDR_SHIFT 1
+#define   GMBUS_SLAVE_READ	(1<<0)
+#define   GMBUS_SLAVE_WRITE	(0<<0)
+#define GMBUS2			0x5108 /* status */
+#define   GMBUS_INUSE		(1<<15)
+#define   GMBUS_HW_WAIT_PHASE	(1<<14)
+#define   GMBUS_STALL_TIMEOUT	(1<<13)
+#define   GMBUS_INT		(1<<12)
+#define   GMBUS_HW_RDY		(1<<11)
+#define   GMBUS_SATOER		(1<<10)
+#define   GMBUS_ACTIVE		(1<<9)
+#define GMBUS3			0x510c /* data buffer bytes 3-0 */
+#define GMBUS4			0x5110 /* interrupt mask (Pineview+) */
+#define   GMBUS_SLAVE_TIMEOUT_EN (1<<4)
+#define   GMBUS_NAK_EN		(1<<3)
+#define   GMBUS_IDLE_EN		(1<<2)
+#define   GMBUS_HW_WAIT_EN	(1<<1)
+#define   GMBUS_HW_RDY_EN	(1<<0)
+#define GMBUS5			0x5120 /* byte index */
+#define   GMBUS_2BYTE_INDEX_EN	(1<<31)
 
 /*
  * Clock control & power management
diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
index 2c6b98f..5c0de65 100644
--- a/drivers/gpu/drm/i915/i915_suspend.c
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -860,9 +860,7 @@
 	for (i = 0; i < 3; i++)
 		I915_WRITE(SWF30 + (i << 2), dev_priv->saveSWF2[i]);
 
-	/* I2C state */
-	intel_i2c_reset_gmbus(dev);
+	intel_i2c_reset(dev);
 
 	return 0;
 }
-
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index 8986a4b..d11bbca 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -291,14 +291,6 @@
 			  struct bdb_header *bdb)
 {
 	struct bdb_general_definitions *general;
-	const int crt_bus_map_table[] = {
-		GPIOB,
-		GPIOA,
-		GPIOC,
-		GPIOD,
-		GPIOE,
-		GPIOF,
-	};
 
 	general = find_section(bdb, BDB_GENERAL_DEFINITIONS);
 	if (general) {
@@ -306,10 +298,8 @@
 		if (block_size >= sizeof(*general)) {
 			int bus_pin = general->crt_ddc_gmbus_pin;
 			DRM_DEBUG_KMS("crt_ddc_bus_pin: %d\n", bus_pin);
-			if ((bus_pin >= 1) && (bus_pin <= 6)) {
-				dev_priv->crt_ddc_bus =
-					crt_bus_map_table[bus_pin-1];
-			}
+			if (bus_pin >= 1 && bus_pin <= 6)
+				dev_priv->crt_ddc_pin = bus_pin - 1;
 		} else {
 			DRM_DEBUG_KMS("BDB_GD too small (%d). Invalid.\n",
 				  block_size);
@@ -533,6 +523,8 @@
 	struct bdb_header *bdb = NULL;
 	u8 __iomem *bios = NULL;
 
+	dev_priv->crt_ddc_pin = GMBUS_PORT_VGADDC;
+
 	/* XXX Should this validation be moved to intel_opregion.c? */
 	if (dev_priv->opregion.vbt) {
 		struct vbt_header *vbt = dev_priv->opregion.vbt;
diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
index 2353da6..8b782ee 100644
--- a/drivers/gpu/drm/i915/intel_crt.c
+++ b/drivers/gpu/drm/i915/intel_crt.c
@@ -264,12 +264,13 @@
 static bool intel_crt_detect_ddc(struct drm_encoder *encoder)
 {
 	struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
+	struct drm_i915_private *dev_priv = encoder->dev->dev_private;
 
 	/* CRT should always be at 0, but check anyway */
 	if (intel_encoder->type != INTEL_OUTPUT_ANALOG)
 		return false;
 
-	return intel_ddc_probe(intel_encoder);
+	return intel_ddc_probe(intel_encoder, dev_priv->crt_ddc_pin);
 }
 
 static enum drm_connector_status
@@ -445,29 +446,18 @@
 
 static int intel_crt_get_modes(struct drm_connector *connector)
 {
-	struct intel_encoder *encoder = intel_attached_encoder(connector);
-	struct i2c_adapter *ddc_bus;
 	struct drm_device *dev = connector->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
 	int ret;
 
-	ret = intel_ddc_get_modes(connector, encoder->ddc_bus);
+	ret = intel_ddc_get_modes(connector,
+				 &dev_priv->gmbus[dev_priv->crt_ddc_pin].adapter);
 	if (ret || !IS_G4X(dev))
-		goto end;
+		return ret;
 
 	/* Try to probe digital port for output in DVI-I -> VGA mode. */
-	ddc_bus = intel_i2c_create(encoder, GPIOD, "CRTDDC_D");
-	if (!ddc_bus) {
-		dev_printk(KERN_ERR, &connector->dev->pdev->dev,
-			   "DDC bus registration failed for CRTDDC_D.\n");
-		goto end;
-	}
-	/* Try to get modes by GPIOD port */
-	ret = intel_ddc_get_modes(connector, ddc_bus);
-	intel_i2c_destroy(ddc_bus);
-
-end:
-	return ret;
-
+	return intel_ddc_get_modes(connector,
+				   &dev_priv->gmbus[GMBUS_PORT_DPB].adapter);
 }
 
 static int intel_crt_set_property(struct drm_connector *connector,
@@ -513,7 +503,6 @@
 	struct intel_encoder *intel_encoder;
 	struct intel_connector *intel_connector;
 	struct drm_i915_private *dev_priv = dev->dev_private;
-	u32 i2c_reg;
 
 	intel_encoder = kzalloc(sizeof(struct intel_encoder), GFP_KERNEL);
 	if (!intel_encoder)
@@ -534,27 +523,6 @@
 
 	intel_connector_attach_encoder(intel_connector, intel_encoder);
 
-	/* Set up the DDC bus. */
-	if (HAS_PCH_SPLIT(dev))
-		i2c_reg = PCH_GPIOA;
-	else {
-		i2c_reg = GPIOA;
-		/* Use VBT information for CRT DDC if available */
-		if (dev_priv->crt_ddc_bus != 0)
-			i2c_reg = dev_priv->crt_ddc_bus;
-	}
-	intel_encoder->ddc_bus = intel_i2c_create(intel_encoder,
-						  i2c_reg, "CRTDDC_A");
-	if (!intel_encoder->ddc_bus) {
-		dev_printk(KERN_ERR, &dev->pdev->dev, "DDC bus registration "
-			   "failed.\n");
-		drm_connector_cleanup(&intel_connector->base);
-		kfree(intel_connector);
-		drm_encoder_cleanup(&intel_encoder->base);
-		kfree(intel_encoder);
-		return;
-	}
-
 	intel_encoder->type = INTEL_OUTPUT_ANALOG;
 	intel_encoder->clone_mask = (1 << INTEL_SDVO_NON_TV_CLONE_BIT) |
 				   (1 << INTEL_ANALOG_CLONE_BIT) |
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 11d643a..86ea389 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2530,12 +2530,6 @@
 {
 	struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
 
-	if (intel_encoder->ddc_bus)
-		intel_i2c_destroy(intel_encoder->ddc_bus);
-
-	if (intel_encoder->i2c_bus)
-		intel_i2c_destroy(intel_encoder->i2c_bus);
-
 	drm_encoder_cleanup(encoder);
 	kfree(intel_encoder);
 }
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 208a4ec..9a87ec5 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1490,7 +1490,7 @@
 	/* We should parse the EDID data and find out if it has an audio sink
 	 */
 
-	ret = intel_ddc_get_modes(connector, intel_dp->base.ddc_bus);
+	ret = intel_ddc_get_modes(connector, &intel_dp->adapter);
 	if (ret) {
 		if ((IS_eDP(intel_dp) || IS_PCH_eDP(intel_dp)) &&
 		    !dev_priv->panel_fixed_mode) {
@@ -1705,7 +1705,6 @@
 
 	intel_dp_i2c_init(intel_dp, intel_connector, name);
 
-	intel_encoder->ddc_bus = &intel_dp->adapter;
 	intel_encoder->hot_plug = intel_dp_hot_plug;
 
 	if (output_reg == DP_A || IS_PCH_eDP(intel_dp)) {
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 8fe6b73..60ce930 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -26,8 +26,6 @@
 #define __INTEL_DRV_H__
 
 #include <linux/i2c.h>
-#include <linux/i2c-id.h>
-#include <linux/i2c-algo-bit.h>
 #include "i915_drv.h"
 #include "drm_crtc.h"
 #include "drm_crtc_helper.h"
@@ -127,13 +125,6 @@
 	return (mode->private_flags & INTEL_MODE_PIXEL_MULTIPLIER_MASK) >> INTEL_MODE_PIXEL_MULTIPLIER_SHIFT;
 }
 
-struct intel_i2c_chan {
-	struct intel_encoder *encoder;
-	u32 reg; /* GPIO reg */
-	struct i2c_adapter adapter;
-	struct i2c_algo_bit_data algo;
-};
-
 struct intel_framebuffer {
 	struct drm_framebuffer base;
 	struct drm_gem_object *obj;
@@ -149,8 +140,6 @@
 struct intel_encoder {
 	struct drm_encoder base;
 	int type;
-	struct i2c_adapter *i2c_bus;
-	struct i2c_adapter *ddc_bus;
 	bool load_detect_temp;
 	bool needs_tv_clock;
 	void (*hot_plug)(struct intel_encoder *);
@@ -206,14 +195,8 @@
 	bool enable_stall_check;
 };
 
-struct i2c_adapter *intel_i2c_create(struct intel_encoder *encoder,
-				     const u32 reg,
-				     const char *name);
-void intel_i2c_destroy(struct i2c_adapter *adapter);
 int intel_ddc_get_modes(struct drm_connector *c, struct i2c_adapter *adapter);
-extern bool intel_ddc_probe(struct intel_encoder *intel_encoder);
-void intel_i2c_quirk_set(struct drm_device *dev, bool enable);
-void intel_i2c_reset_gmbus(struct drm_device *dev);
+extern bool intel_ddc_probe(struct intel_encoder *intel_encoder, int ddc_bus);
 
 extern void intel_crt_init(struct drm_device *dev);
 extern void intel_hdmi_init(struct drm_device *dev, int sdvox_reg);
diff --git a/drivers/gpu/drm/i915/intel_dvo.c b/drivers/gpu/drm/i915/intel_dvo.c
index d8a586b..1ee0dbb 100644
--- a/drivers/gpu/drm/i915/intel_dvo.c
+++ b/drivers/gpu/drm/i915/intel_dvo.c
@@ -72,7 +72,7 @@
 		.name = "ch7017",
 		.dvo_reg = DVOC,
 		.slave_addr = 0x75,
-		.gpio = GPIOE,
+		.gpio = GMBUS_PORT_DPD,
 		.dev_ops = &ch7017_ops,
 	}
 };
@@ -81,6 +81,7 @@
 	struct intel_encoder base;
 
 	struct intel_dvo_device dev;
+	int ddc_bus;
 
 	struct drm_display_mode *panel_fixed_mode;
 	bool panel_wants_dither;
@@ -235,13 +236,15 @@
 static int intel_dvo_get_modes(struct drm_connector *connector)
 {
 	struct intel_dvo *intel_dvo = intel_attached_dvo(connector);
+	struct drm_i915_private *dev_priv = connector->dev->dev_private;
 
 	/* We should probably have an i2c driver get_modes function for those
 	 * devices which will have a fixed set of modes determined by the chip
 	 * (TV-out, for example), but for now with just TMDS and LVDS,
 	 * that's not the case.
 	 */
-	intel_ddc_get_modes(connector, intel_dvo->base.ddc_bus);
+	intel_ddc_get_modes(connector,
+			    &dev_priv->gmbus[intel_dvo->ddc_bus].adapter);
 	if (!list_empty(&connector->probed_modes))
 		return 1;
 
@@ -341,10 +344,10 @@
 
 void intel_dvo_init(struct drm_device *dev)
 {
+	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct intel_encoder *intel_encoder;
 	struct intel_dvo *intel_dvo;
 	struct intel_connector *intel_connector;
-	struct i2c_adapter *i2cbus = NULL;
 	int ret = 0;
 	int i;
 	int encoder_type = DRM_MODE_ENCODER_NONE;
@@ -364,15 +367,13 @@
 			 &intel_dvo_enc_funcs, encoder_type);
 
 	/* Set up the DDC bus */
-	intel_encoder->ddc_bus = intel_i2c_create(intel_encoder,
-						  GPIOD, "DVODDC_D");
-	if (!intel_encoder->ddc_bus)
-		goto free_intel;
+	intel_dvo->ddc_bus = GMBUS_PORT_DPB;
 
 	/* Now, try to find a controller */
 	for (i = 0; i < ARRAY_SIZE(intel_dvo_devices); i++) {
 		struct drm_connector *connector = &intel_connector->base;
 		const struct intel_dvo_device *dvo = &intel_dvo_devices[i];
+		struct i2c_adapter *i2c;
 		int gpio;
 
 		/* Allow the I2C driver info to specify the GPIO to be used in
@@ -382,23 +383,18 @@
 		if (dvo->gpio != 0)
 			gpio = dvo->gpio;
 		else if (dvo->type == INTEL_DVO_CHIP_LVDS)
-			gpio = GPIOB;
+			gpio = GMBUS_PORT_PANEL;
 		else
-			gpio = GPIOE;
+			gpio = GMBUS_PORT_DPD;
 
 		/* Set up the I2C bus necessary for the chip we're probing.
 		 * It appears that everything is on GPIOE except for panels
 		 * on i830 laptops, which are on GPIOB (DVOA).
 		 */
-		if (i2cbus != NULL)
-			intel_i2c_destroy(i2cbus);
-		i2cbus = intel_i2c_create(intel_encoder, gpio,
-					  gpio == GPIOB ?  "DVOI2C_B" : "DVOI2C_E");
-		if (i2cbus == NULL)
-			continue;
+		i2c = &dev_priv->gmbus[gpio].adapter;
 
 		intel_dvo->dev = *dvo;
-		ret = dvo->dev_ops->init(&intel_dvo->dev, i2cbus);
+		ret = dvo->dev_ops->init(&intel_dvo->dev, i2c);
 		if (!ret)
 			continue;
 
@@ -451,11 +447,6 @@
 		return;
 	}
 
-	intel_i2c_destroy(intel_encoder->ddc_bus);
-	/* Didn't find a chip, so tear down. */
-	if (i2cbus != NULL)
-		intel_i2c_destroy(i2cbus);
-free_intel:
 	drm_encoder_cleanup(&intel_encoder->base);
 	kfree(intel_dvo);
 	kfree(intel_connector);
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 783924c..f814cb0 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -40,6 +40,7 @@
 struct intel_hdmi {
 	struct intel_encoder base;
 	u32 sdvox_reg;
+	int ddc_bus;
 	bool has_hdmi_sink;
 };
 
@@ -148,11 +149,13 @@
 intel_hdmi_detect(struct drm_connector *connector)
 {
 	struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
-	struct edid *edid = NULL;
+	struct drm_i915_private *dev_priv = connector->dev->dev_private;
+	struct edid *edid;
 	enum drm_connector_status status = connector_status_disconnected;
 
 	intel_hdmi->has_hdmi_sink = false;
-	edid = drm_get_edid(connector, intel_hdmi->base.ddc_bus);
+	edid = drm_get_edid(connector,
+			    &dev_priv->gmbus[intel_hdmi->ddc_bus].adapter);
 
 	if (edid) {
 		if (edid->input & DRM_EDID_INPUT_DIGITAL) {
@@ -169,12 +172,14 @@
 static int intel_hdmi_get_modes(struct drm_connector *connector)
 {
 	struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
+	struct drm_i915_private *dev_priv = connector->dev->dev_private;
 
 	/* We should parse the EDID data and find out if it's an HDMI sink so
 	 * we can send audio to it.
 	 */
 
-	return intel_ddc_get_modes(connector, intel_hdmi->base.ddc_bus);
+	return intel_ddc_get_modes(connector,
+				   &dev_priv->gmbus[intel_hdmi->ddc_bus].adapter);
 }
 
 static void intel_hdmi_destroy(struct drm_connector *connector)
@@ -246,32 +251,25 @@
 	/* Set up the DDC bus. */
 	if (sdvox_reg == SDVOB) {
 		intel_encoder->clone_mask = (1 << INTEL_HDMIB_CLONE_BIT);
-		intel_encoder->ddc_bus = intel_i2c_create(intel_encoder,
-							  GPIOE, "HDMIB");
+		intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
 		dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS;
 	} else if (sdvox_reg == SDVOC) {
 		intel_encoder->clone_mask = (1 << INTEL_HDMIC_CLONE_BIT);
-		intel_encoder->ddc_bus = intel_i2c_create(intel_encoder,
-							  GPIOD, "HDMIC");
+		intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
 		dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS;
 	} else if (sdvox_reg == HDMIB) {
 		intel_encoder->clone_mask = (1 << INTEL_HDMID_CLONE_BIT);
-		intel_encoder->ddc_bus = intel_i2c_create(intel_encoder,
-							  PCH_GPIOE, "HDMIB");
+		intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
 		dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS;
 	} else if (sdvox_reg == HDMIC) {
 		intel_encoder->clone_mask = (1 << INTEL_HDMIE_CLONE_BIT);
-		intel_encoder->ddc_bus = intel_i2c_create(intel_encoder,
-							  PCH_GPIOD, "HDMIC");
+		intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
 		dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS;
 	} else if (sdvox_reg == HDMID) {
 		intel_encoder->clone_mask = (1 << INTEL_HDMIF_CLONE_BIT);
-		intel_encoder->ddc_bus = intel_i2c_create(intel_encoder,
-							  PCH_GPIOF, "HDMID");
+		intel_hdmi->ddc_bus = GMBUS_PORT_DPD;
 		dev_priv->hotplug_supported_mask |= HDMID_HOTPLUG_INT_STATUS;
 	}
-	if (!intel_encoder->ddc_bus)
-		goto err_connector;
 
 	intel_hdmi->sdvox_reg = sdvox_reg;
 
@@ -288,14 +286,4 @@
 		u32 temp = I915_READ(PEG_BAND_GAP_DATA);
 		I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd);
 	}
-
-	return;
-
-err_connector:
-	drm_encoder_cleanup(&intel_encoder->base);
-	drm_connector_cleanup(connector);
-	kfree(intel_hdmi);
-	kfree(intel_connector);
-
-	return;
 }
diff --git a/drivers/gpu/drm/i915/intel_i2c.c b/drivers/gpu/drm/i915/intel_i2c.c
index d3d65a9..6f4d1289 100644
--- a/drivers/gpu/drm/i915/intel_i2c.c
+++ b/drivers/gpu/drm/i915/intel_i2c.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2006 Dave Airlie <airlied@linux.ie>
- * Copyright © 2006-2008 Intel Corporation
+ * Copyright © 2006-2008,2010 Intel Corporation
  *   Jesse Barnes <jesse.barnes@intel.com>
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
@@ -24,10 +24,9 @@
  *
  * Authors:
  *	Eric Anholt <eric@anholt.net>
+ *	Chris Wilson <chris@chris-wilson.co.uk>
  */
 #include <linux/i2c.h>
-#include <linux/slab.h>
-#include <linux/i2c-id.h>
 #include <linux/i2c-algo-bit.h>
 #include "drmP.h"
 #include "drm.h"
@@ -35,13 +34,33 @@
 #include "i915_drm.h"
 #include "i915_drv.h"
 
-void intel_i2c_quirk_set(struct drm_device *dev, bool enable)
+/* Intel GPIO access functions */
+
+#define I2C_RISEFALL_TIME 20
+
+struct intel_gpio {
+	struct i2c_adapter adapter;
+	struct i2c_algo_bit_data algo;
+	struct drm_i915_private *dev_priv;
+	u32 reg;
+};
+
+void
+intel_i2c_reset(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
+	if (HAS_PCH_SPLIT(dev))
+		I915_WRITE(PCH_GMBUS0, 0);
+	else
+		I915_WRITE(GMBUS0, 0);
+}
+
+static void intel_i2c_quirk_set(struct drm_i915_private *dev_priv, bool enable)
+{
 	u32 val;
 
 	/* When using bit bashing for I2C, this bit needs to be set to 1 */
-	if (!IS_PINEVIEW(dev))
+	if (!IS_PINEVIEW(dev_priv->dev))
 		return;
 
 	val = I915_READ(DSPCLK_GATE_D);
@@ -52,42 +71,30 @@
 	I915_WRITE(DSPCLK_GATE_D, val);
 }
 
-/*
- * Intel GPIO access functions
- */
-
-#define I2C_RISEFALL_TIME 20
-
-static inline struct drm_i915_private *
-get_dev_priv(struct intel_i2c_chan *chan)
-{
-	return chan->encoder->base.dev->dev_private;
-}
-
 static int get_clock(void *data)
 {
-	struct intel_i2c_chan *chan = data;
-	struct drm_i915_private *dev_priv = get_dev_priv(chan);
-	return (I915_READ(chan->reg) & GPIO_CLOCK_VAL_IN) != 0;
+	struct intel_gpio *gpio = data;
+	struct drm_i915_private *dev_priv = gpio->dev_priv;
+	return (I915_READ(gpio->reg) & GPIO_CLOCK_VAL_IN) != 0;
 }
 
 static int get_data(void *data)
 {
-	struct intel_i2c_chan *chan = data;
-	struct drm_i915_private *dev_priv = get_dev_priv(chan);
-	return (I915_READ(chan->reg) & GPIO_DATA_VAL_IN) != 0;
+	struct intel_gpio *gpio = data;
+	struct drm_i915_private *dev_priv = gpio->dev_priv;
+	return (I915_READ(gpio->reg) & GPIO_DATA_VAL_IN) != 0;
 }
 
 static void set_clock(void *data, int state_high)
 {
-	struct intel_i2c_chan *chan = data;
-	struct drm_i915_private *dev_priv = get_dev_priv(chan);
+	struct intel_gpio *gpio = data;
+	struct drm_i915_private *dev_priv = gpio->dev_priv;
 	struct drm_device *dev = dev_priv->dev;
 	u32 reserved = 0, clock_bits;
 
 	/* On most chips, these bits must be preserved in software. */
 	if (!IS_I830(dev) && !IS_845G(dev))
-		reserved = I915_READ(chan->reg) & (GPIO_DATA_PULLUP_DISABLE |
+		reserved = I915_READ(gpio->reg) & (GPIO_DATA_PULLUP_DISABLE |
 						   GPIO_CLOCK_PULLUP_DISABLE);
 
 	if (state_high)
@@ -95,20 +102,21 @@
 	else
 		clock_bits = GPIO_CLOCK_DIR_OUT | GPIO_CLOCK_DIR_MASK |
 			GPIO_CLOCK_VAL_MASK;
-	I915_WRITE(chan->reg, reserved | clock_bits);
-	POSTING_READ(chan->reg);
+
+	I915_WRITE(gpio->reg, reserved | clock_bits);
+	POSTING_READ(gpio->reg);
 }
 
 static void set_data(void *data, int state_high)
 {
-	struct intel_i2c_chan *chan = data;
-	struct drm_i915_private *dev_priv = get_dev_priv(chan);
+	struct intel_gpio *gpio = data;
+	struct drm_i915_private *dev_priv = gpio->dev_priv;
 	struct drm_device *dev = dev_priv->dev;
 	u32 reserved = 0, data_bits;
 
 	/* On most chips, these bits must be preserved in software. */
 	if (!IS_I830(dev) && !IS_845G(dev))
-		reserved = I915_READ(chan->reg) & (GPIO_DATA_PULLUP_DISABLE |
+		reserved = I915_READ(gpio->reg) & (GPIO_DATA_PULLUP_DISABLE |
 						   GPIO_CLOCK_PULLUP_DISABLE);
 
 	if (state_high)
@@ -117,111 +125,258 @@
 		data_bits = GPIO_DATA_DIR_OUT | GPIO_DATA_DIR_MASK |
 			GPIO_DATA_VAL_MASK;
 
-	I915_WRITE(chan->reg, reserved | data_bits);
-	POSTING_READ(chan->reg);
+	I915_WRITE(gpio->reg, reserved | data_bits);
+	POSTING_READ(gpio->reg);
 }
 
-/* Clears the GMBUS setup.  Our driver doesn't make use of the GMBUS I2C
- * engine, but if the BIOS leaves it enabled, then that can break our use
- * of the bit-banging I2C interfaces.  This is notably the case with the
- * Mac Mini in EFI mode.
- */
-void
-intel_i2c_reset_gmbus(struct drm_device *dev)
+static struct i2c_adapter *
+intel_gpio_create(struct drm_i915_private *dev_priv, u32 pin)
 {
-	struct drm_i915_private *dev_priv = dev->dev_private;
+	static const int map_pin_to_reg[] = {
+		0,
+		GPIOB,
+		GPIOA,
+		GPIOC,
+		GPIOD,
+		GPIOE,
+		GPIOF,
+	};
+	struct intel_gpio *gpio;
 
-	if (HAS_PCH_SPLIT(dev))
-		I915_WRITE(PCH_GMBUS0, 0);
-	else
-		I915_WRITE(GMBUS0, 0);
-}
+	if (pin < 1 || pin > 7)
+		return NULL;
 
-/**
- * intel_i2c_create - instantiate an Intel i2c bus using the specified GPIO reg
- * @dev: DRM device
- * @output: driver specific output device
- * @reg: GPIO reg to use
- * @name: name for this bus
- * @slave_addr: slave address (if fixed)
- *
- * Creates and registers a new i2c bus with the Linux i2c layer, for use
- * in output probing and control (e.g. DDC or SDVO control functions).
- *
- * Possible values for @reg include:
- *   %GPIOA
- *   %GPIOB
- *   %GPIOC
- *   %GPIOD
- *   %GPIOE
- *   %GPIOF
- *   %GPIOG
- *   %GPIOH
- * see PRM for details on how these different busses are used.
- */
-struct i2c_adapter *intel_i2c_create(struct intel_encoder *encoder,
-				     const u32 reg,
-				     const char *name)
-{
-	struct intel_i2c_chan *chan;
-	struct drm_device *dev = encoder->base.dev;
+	gpio = kzalloc(sizeof(struct intel_gpio), GFP_KERNEL);
+	if (gpio == NULL)
+		return NULL;
 
-	chan = kzalloc(sizeof(struct intel_i2c_chan), GFP_KERNEL);
-	if (!chan)
+	gpio->reg = map_pin_to_reg[pin];
+	if (HAS_PCH_SPLIT(dev_priv->dev))
+		gpio->reg += PCH_GPIOA - GPIOA;
+	gpio->dev_priv = dev_priv;
+
+	snprintf(gpio->adapter.name, I2C_NAME_SIZE, "GPIO %d", pin);
+	gpio->adapter.owner = THIS_MODULE;
+	gpio->adapter.algo_data	= &gpio->algo;
+	gpio->adapter.dev.parent = &dev_priv->dev->pdev->dev;
+	gpio->algo.setsda = set_data;
+	gpio->algo.setscl = set_clock;
+	gpio->algo.getsda = get_data;
+	gpio->algo.getscl = get_clock;
+	gpio->algo.udelay = I2C_RISEFALL_TIME;
+	gpio->algo.timeout = usecs_to_jiffies(2200);
+	gpio->algo.data = gpio;
+
+	if (i2c_bit_add_bus(&gpio->adapter))
 		goto out_free;
 
-	chan->encoder = encoder;
-	chan->reg = reg;
-	snprintf(chan->adapter.name, I2C_NAME_SIZE, "intel drm %s", name);
-	chan->adapter.owner = THIS_MODULE;
-	chan->adapter.algo_data	= &chan->algo;
-	chan->adapter.dev.parent = &dev->pdev->dev;
-	chan->algo.setsda = set_data;
-	chan->algo.setscl = set_clock;
-	chan->algo.getsda = get_data;
-	chan->algo.getscl = get_clock;
-	chan->algo.udelay = I2C_RISEFALL_TIME;
-	chan->algo.timeout = usecs_to_jiffies(2200);
-	chan->algo.data = chan;
-
-	i2c_set_adapdata(&chan->adapter, chan);
-
-	if (i2c_bit_add_bus(&chan->adapter))
-		goto out_free;
-
-	intel_i2c_reset_gmbus(dev);
+	intel_i2c_reset(dev_priv->dev);
 
 	/* JJJ:  raise SCL and SDA? */
-	intel_i2c_quirk_set(dev, true);
-	set_data(chan, 1);
+	intel_i2c_quirk_set(dev_priv, true);
+	set_data(gpio, 1);
 	udelay(I2C_RISEFALL_TIME);
-	set_clock(chan, 1);
+	set_clock(gpio, 1);
 	udelay(I2C_RISEFALL_TIME);
-	intel_i2c_quirk_set(dev, false);
+	intel_i2c_quirk_set(dev_priv, false);
 
-	return &chan->adapter;
+	return &gpio->adapter;
 
 out_free:
-	kfree(chan);
+	kfree(gpio);
 	return NULL;
 }
 
-/**
- * intel_i2c_destroy - unregister and free i2c bus resources
- * @output: channel to free
- *
- * Unregister the adapter from the i2c layer, then free the structure.
- */
-void intel_i2c_destroy(struct i2c_adapter *adapter)
+static int
+quirk_i2c_transfer(struct drm_i915_private *dev_priv,
+		   struct i2c_adapter *adapter,
+		   struct i2c_msg *msgs,
+		   int num)
 {
-	struct intel_i2c_chan *chan;
+	int ret;
 
-	if (!adapter)
+	intel_i2c_reset(dev_priv->dev);
+
+	intel_i2c_quirk_set(dev_priv, true);
+	ret = i2c_transfer(adapter, msgs, num);
+	intel_i2c_quirk_set(dev_priv, false);
+
+	return ret;
+}
+
+static int
+gmbus_xfer(struct i2c_adapter *adapter,
+	   struct i2c_msg *msgs,
+	   int num)
+{
+	struct intel_gmbus *bus = container_of(adapter,
+					       struct intel_gmbus,
+					       adapter);
+	struct drm_i915_private *dev_priv = adapter->algo_data;
+	int i, speed, reg_offset;
+
+	if (bus->force_bitbanging)
+		return quirk_i2c_transfer(dev_priv, bus->force_bitbanging, msgs, num);
+
+	reg_offset = HAS_PCH_SPLIT(dev_priv->dev) ? PCH_GMBUS0 - GMBUS0 : 0;
+
+	speed = GMBUS_RATE_100KHZ;
+	if (INTEL_INFO(dev_priv->dev)->gen > 4 || IS_G4X(dev_priv->dev)) {
+		if (bus->pin == GMBUS_PORT_DPB) /* SDVO only? */
+			speed = GMBUS_RATE_1MHZ;
+		else
+			speed = GMBUS_RATE_400KHZ;
+	}
+	I915_WRITE(GMBUS0 + reg_offset, speed | bus->pin);
+
+	for (i = 0; i < num; i++) {
+		u16 len = msgs[i].len;
+		u8 *buf = msgs[i].buf;
+
+		if (msgs[i].flags & I2C_M_RD) {
+			I915_WRITE(GMBUS1 + reg_offset,
+				   GMBUS_CYCLE_WAIT | (i + 1 == num ? GMBUS_CYCLE_STOP : 0) |
+				   (len << GMBUS_BYTE_COUNT_SHIFT) |
+				   (msgs[i].addr << GMBUS_SLAVE_ADDR_SHIFT) |
+				   GMBUS_SLAVE_READ | GMBUS_SW_RDY);
+			do {
+				u32 val, loop = 0;
+
+				if (wait_for(I915_READ(GMBUS2 + reg_offset) & (GMBUS_SATOER | GMBUS_HW_RDY), 50))
+					goto timeout;
+				if (I915_READ(GMBUS2 + reg_offset) & GMBUS_SATOER)
+					return 0;
+
+				val = I915_READ(GMBUS3 + reg_offset);
+				do {
+					*buf++ = val & 0xff;
+					val >>= 8;
+				} while (--len && ++loop < 4);
+			} while (len);
+		} else {
+			u32 val = 0, loop = 0;
+
+			BUG_ON(msgs[i].len > 4);
+
+			do {
+				val |= *buf++ << (loop*8);
+			} while (--len && +loop < 4);
+
+			I915_WRITE(GMBUS3 + reg_offset, val);
+			I915_WRITE(GMBUS1 + reg_offset,
+				   (i + 1 == num ? GMBUS_CYCLE_STOP : GMBUS_CYCLE_WAIT ) |
+				   (msgs[i].len << GMBUS_BYTE_COUNT_SHIFT) |
+				   (msgs[i].addr << GMBUS_SLAVE_ADDR_SHIFT) |
+				   GMBUS_SLAVE_WRITE | GMBUS_SW_RDY);
+		}
+
+		if (i + 1 < num && wait_for(I915_READ(GMBUS2 + reg_offset) & (GMBUS_SATOER | GMBUS_HW_WAIT_PHASE), 50))
+			goto timeout;
+		if (I915_READ(GMBUS2 + reg_offset) & GMBUS_SATOER)
+			return 0;
+	}
+
+	return num;
+
+timeout:
+	DRM_INFO("GMBUS timed out, falling back to bit banging on pin %d\n", bus->pin);
+	/* Hardware may not support GMBUS over these pins? Try GPIO bitbanging instead. */
+	bus->force_bitbanging = intel_gpio_create(dev_priv, bus->pin);
+	if (!bus->force_bitbanging)
+		return -ENOMEM;
+
+	return quirk_i2c_transfer(dev_priv, bus->force_bitbanging, msgs, num);
+}
+
+static u32 gmbus_func(struct i2c_adapter *adapter)
+{
+	return (I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL |
+		/* I2C_FUNC_10BIT_ADDR | */
+		I2C_FUNC_SMBUS_READ_BLOCK_DATA |
+		I2C_FUNC_SMBUS_BLOCK_PROC_CALL);
+}
+
+static const struct i2c_algorithm gmbus_algorithm = {
+	.master_xfer	= gmbus_xfer,
+	.functionality	= gmbus_func
+};
+
+/**
+ * intel_gmbus_setup - instantiate all Intel i2c GMBuses
+ * @dev: DRM device
+ */
+int intel_setup_gmbus(struct drm_device *dev)
+{
+	static const char *names[] = {
+		"disabled",
+		"ssc",
+		"vga",
+		"panel",
+		"dpc",
+		"dpb",
+		"dpd",
+		"reserved"
+	};
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	int ret, i;
+
+	dev_priv->gmbus = kcalloc(sizeof(struct intel_gmbus), GMBUS_NUM_PORTS,
+				  GFP_KERNEL);
+	if (dev_priv->gmbus == NULL)
+		return -ENOMEM;
+
+	for (i = 0; i < GMBUS_NUM_PORTS; i++) {
+		struct intel_gmbus *bus = &dev_priv->gmbus[i];
+
+		bus->adapter.owner = THIS_MODULE;
+		bus->adapter.class = I2C_CLASS_DDC;
+		snprintf(bus->adapter.name,
+			 I2C_NAME_SIZE,
+			 "gmbus %s",
+			 names[i]);
+
+		bus->adapter.dev.parent = &dev->pdev->dev;
+		bus->adapter.algo_data	= dev_priv;
+
+		bus->adapter.algo = &gmbus_algorithm;
+		ret = i2c_add_adapter(&bus->adapter);
+		if (ret)
+			goto err;
+
+		bus->pin = i;
+	}
+
+	intel_i2c_reset(dev_priv->dev);
+
+	return 0;
+
+err:
+	while (--i) {
+		struct intel_gmbus *bus = &dev_priv->gmbus[i];
+		i2c_del_adapter(&bus->adapter);
+	}
+	kfree(dev_priv->gmbus);
+	dev_priv->gmbus = NULL;
+	return ret;
+}
+
+void intel_teardown_gmbus(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	int i;
+
+	if (dev_priv->gmbus == NULL)
 		return;
 
-	chan = container_of(adapter,
-			    struct intel_i2c_chan,
-			    adapter);
-	i2c_del_adapter(&chan->adapter);
-	kfree(chan);
+	for (i = 0; i < GMBUS_NUM_PORTS; i++) {
+		struct intel_gmbus *bus = &dev_priv->gmbus[i];
+		if (bus->force_bitbanging) {
+			i2c_del_adapter(bus->force_bitbanging);
+			kfree(bus->force_bitbanging);
+		}
+		i2c_del_adapter(&bus->adapter);
+	}
+
+	kfree(dev_priv->gmbus);
+	dev_priv->gmbus = NULL;
 }
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 2ff4a5cb..9177c17 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -474,11 +474,12 @@
 {
 	struct intel_lvds *intel_lvds = intel_attached_lvds(connector);
 	struct drm_device *dev = connector->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct drm_display_mode *mode;
 
 	if (intel_lvds->edid_good) {
 		int ret = intel_ddc_get_modes(connector,
-					      intel_lvds->base.ddc_bus);
+					      &dev_priv->gmbus[GMBUS_PORT_PANEL].adapter);
 		if (ret)
 			return ret;
 	}
@@ -898,21 +899,12 @@
 	 *    if closed, act like it's not there for now
 	 */
 
-	/* Set up the DDC bus. */
-	intel_encoder->ddc_bus = intel_i2c_create(intel_encoder,
-						  gpio, "LVDSDDC_C");
-	if (!intel_encoder->ddc_bus) {
-		dev_printk(KERN_ERR, &dev->pdev->dev, "DDC bus registration "
-			   "failed.\n");
-		goto failed;
-	}
-
 	/*
 	 * Attempt to get the fixed panel mode from DDC.  Assume that the
 	 * preferred mode is the right one.
 	 */
 	intel_lvds->edid_good = true;
-	if (!intel_ddc_get_modes(connector, intel_encoder->ddc_bus))
+	if (!intel_ddc_get_modes(connector, &dev_priv->gmbus[GMBUS_PORT_PANEL].adapter))
 		intel_lvds->edid_good = false;
 
 	if (!intel_lvds->edid_good) {
@@ -999,8 +991,6 @@
 
 failed:
 	DRM_DEBUG_KMS("No LVDS modes found, disabling.\n");
-	if (intel_encoder->ddc_bus)
-		intel_i2c_destroy(intel_encoder->ddc_bus);
 	drm_connector_cleanup(connector);
 	drm_encoder_cleanup(encoder);
 	kfree(intel_lvds);
diff --git a/drivers/gpu/drm/i915/intel_modes.c b/drivers/gpu/drm/i915/intel_modes.c
index 1138aa9..f70b7cf 100644
--- a/drivers/gpu/drm/i915/intel_modes.c
+++ b/drivers/gpu/drm/i915/intel_modes.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
- * Copyright (c) 2007 Intel Corporation
+ * Copyright (c) 2007, 2010 Intel Corporation
  *   Jesse Barnes <jesse.barnes@intel.com>
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
@@ -34,11 +34,11 @@
  * intel_ddc_probe
  *
  */
-bool intel_ddc_probe(struct intel_encoder *intel_encoder)
+bool intel_ddc_probe(struct intel_encoder *intel_encoder, int ddc_bus)
 {
+	struct drm_i915_private *dev_priv = intel_encoder->base.dev->dev_private;
 	u8 out_buf[] = { 0x0, 0x0};
 	u8 buf[2];
-	int ret;
 	struct i2c_msg msgs[] = {
 		{
 			.addr = 0x50,
@@ -54,13 +54,7 @@
 		}
 	};
 
-	intel_i2c_quirk_set(intel_encoder->base.dev, true);
-	ret = i2c_transfer(intel_encoder->ddc_bus, msgs, 2);
-	intel_i2c_quirk_set(intel_encoder->base.dev, false);
-	if (ret == 2)
-		return true;
-
-	return false;
+	return i2c_transfer(&dev_priv->gmbus[ddc_bus].adapter, msgs, 2) == 2;
 }
 
 /**
@@ -76,9 +70,7 @@
 	struct edid *edid;
 	int ret = 0;
 
-	intel_i2c_quirk_set(connector->dev, true);
 	edid = drm_get_edid(connector, adapter);
-	intel_i2c_quirk_set(connector->dev, false);
 	if (edid) {
 		drm_mode_connector_update_edid_property(connector, edid);
 		ret = drm_add_edid_modes(connector, edid);
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index f7030e4..2b3b475 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -65,6 +65,7 @@
 struct intel_sdvo {
 	struct intel_encoder base;
 
+	struct i2c_adapter *i2c;
 	u8 slave_addr;
 
 	/* Register for the SDVO device: SDVOB or SDVOC */
@@ -264,7 +265,7 @@
 	};
 	int ret;
 
-	if ((ret = i2c_transfer(intel_sdvo->base.i2c_bus, msgs, 2)) == 2)
+	if ((ret = i2c_transfer(intel_sdvo->i2c, msgs, 2)) == 2)
 	{
 		*ch = buf[0];
 		return true;
@@ -286,7 +287,7 @@
 		}
 	};
 
-	return i2c_transfer(intel_sdvo->base.i2c_bus, msgs, 1) == 1;
+	return i2c_transfer(intel_sdvo->i2c, msgs, 1) == 1;
 }
 
 #define SDVO_CMD_NAME_ENTRY(cmd) {cmd, #cmd}
@@ -566,7 +567,7 @@
 	ret_value[0] = 0;
 	ret_value[1] = 0;
 
-	ret = i2c_transfer(intel_sdvo->base.i2c_bus, msgs, 3);
+	ret = i2c_transfer(intel_sdvo->i2c, msgs, 3);
 	if (ret < 0)
 		return ret;
 	if (ret != 3) {
@@ -1375,6 +1376,19 @@
 	return (caps > 1);
 }
 
+static struct edid *
+intel_sdvo_get_edid(struct drm_connector *connector, int ddc)
+{
+	struct intel_sdvo *intel_sdvo = intel_attached_sdvo(connector);
+	int ret;
+
+	ret = intel_sdvo_set_control_bus_switch(intel_sdvo, ddc);
+	if (ret)
+		return NULL;
+
+	return drm_get_edid(connector, intel_sdvo->i2c);
+}
+
 static struct drm_connector *
 intel_find_analog_connector(struct drm_device *dev)
 {
@@ -1418,28 +1432,12 @@
 static struct edid *
 intel_sdvo_get_analog_edid(struct drm_connector *connector)
 {
-	struct intel_encoder *encoder = intel_attached_encoder(connector);
-	struct drm_device *dev = connector->dev;
-	struct i2c_adapter *ddc;
-	struct edid *edid;
-	u32 ddc_reg;
+	struct drm_i915_private *dev_priv = connector->dev->dev_private;
 
-	if (!intel_analog_is_connected(dev))
+	if (!intel_analog_is_connected(connector->dev))
 		return NULL;
 
-	if (HAS_PCH_SPLIT(dev))
-		ddc_reg = PCH_GPIOA;
-	else
-		ddc_reg = GPIOA;
-
-	ddc = intel_i2c_create(encoder, ddc_reg, "SDVO/VGA DDC BUS");
-	if (ddc == NULL)
-		return NULL;
-
-	edid = drm_get_edid(connector, ddc);
-	intel_i2c_destroy(ddc);
-
-	return edid;
+	return drm_get_edid(connector, &dev_priv->gmbus[dev_priv->crt_ddc_pin].adapter);
 }
 
 enum drm_connector_status
@@ -1449,28 +1447,26 @@
 	enum drm_connector_status status;
 	struct edid *edid;
 
-	edid = drm_get_edid(connector, intel_sdvo->base.ddc_bus);
+	edid = intel_sdvo_get_edid(connector, intel_sdvo->ddc_bus);
 
 	if (edid == NULL && intel_sdvo_multifunc_encoder(intel_sdvo)) {
-		u8 saved_ddc = intel_sdvo->ddc_bus, ddc;
+		u8 ddc;
 
 		/*
 		 * Don't use the 1 as the argument of DDC bus switch to get
 		 * the EDID. It is used for SDVO SPD ROM.
 		 */
 		for (ddc = intel_sdvo->ddc_bus >> 1; ddc > 1; ddc >>= 1) {
-			intel_sdvo->ddc_bus = ddc;
-			edid = drm_get_edid(connector, intel_sdvo->base.ddc_bus);
-			if (edid)
+			edid = intel_sdvo_get_edid(connector, ddc);
+			if (edid) {
+				/*
+				 * If we found the EDID on the other bus,
+				 * assume that is the correct DDC bus.
+				 */
+				intel_sdvo->ddc_bus = ddc;
 				break;
+			}
 		}
-
-		/*
-		 * If we found the EDID on the other bus, maybe that is the
-		 * correct DDC bus.
-		 */
-		if (edid == NULL)
-			intel_sdvo->ddc_bus = saved_ddc;
 	}
 
 	/*
@@ -1546,12 +1542,9 @@
 {
 	struct intel_sdvo *intel_sdvo = intel_attached_sdvo(connector);
 	struct edid *edid;
-	int num_modes;
 
 	/* set the bus switch and get the modes */
-	num_modes = intel_ddc_get_modes(connector, intel_sdvo->base.ddc_bus);
-	if (num_modes)
-		return;
+	edid = intel_sdvo_get_edid(connector, intel_sdvo->ddc_bus);
 
 	/*
 	 * Mac mini hack.  On this device, the DVI-I connector shares one DDC
@@ -1559,7 +1552,9 @@
 	 * DDC fails, check to see if the analog output is disconnected, in
 	 * which case we'll look there for the digital DDC data.
 	 */
-	edid = intel_sdvo_get_analog_edid(connector);
+	if (edid == NULL)
+		edid = intel_sdvo_get_analog_edid(connector);
+
 	if (edid != NULL) {
 		drm_mode_connector_update_edid_property(connector, edid);
 		drm_add_edid_modes(connector, edid);
@@ -1678,7 +1673,7 @@
 	 * Assume that the preferred modes are
 	 * arranged in priority order.
 	 */
-	intel_ddc_get_modes(connector, intel_sdvo->base.ddc_bus);
+	intel_ddc_get_modes(connector, intel_sdvo->i2c);
 	if (list_empty(&connector->probed_modes) == false)
 		goto end;
 
@@ -2004,30 +1999,6 @@
 				     &intel_sdvo->is_hdmi, 1);
 }
 
-static int intel_sdvo_master_xfer(struct i2c_adapter *i2c_adap,
-				  struct i2c_msg msgs[], int num)
-{
-	struct intel_sdvo *intel_sdvo;
-	const struct i2c_algorithm *algo;
-	int ret;
-
-	intel_sdvo = container_of(i2c_adap->algo_data,
-				  struct intel_sdvo,
-				  base);
-	algo = intel_sdvo->base.i2c_bus->algo;
-
-	ret = intel_sdvo_set_control_bus_switch(intel_sdvo,
-						intel_sdvo->ddc_bus);
-	if (ret)
-		return ret;
-
-	return algo->master_xfer(i2c_adap, msgs, num);
-}
-
-static struct i2c_algorithm intel_sdvo_i2c_bit_algo = {
-	.master_xfer	= intel_sdvo_master_xfer,
-};
-
 static u8
 intel_sdvo_get_slave_addr(struct drm_device *dev, int sdvo_reg)
 {
@@ -2540,9 +2511,7 @@
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct intel_encoder *intel_encoder;
 	struct intel_sdvo *intel_sdvo;
-	u8 ch[0x40];
 	int i;
-	u32 i2c_reg, ddc_reg;
 
 	intel_sdvo = kzalloc(sizeof(struct intel_sdvo), GFP_KERNEL);
 	if (!intel_sdvo)
@@ -2555,82 +2524,49 @@
 	/* encoder type will be decided later */
 	drm_encoder_init(dev, &intel_encoder->base, &intel_sdvo_enc_funcs, 0);
 
-	if (HAS_PCH_SPLIT(dev)) {
-		i2c_reg = PCH_GPIOE;
-		ddc_reg = PCH_GPIOE;
-	} else {
-		i2c_reg = GPIOE;
-		ddc_reg = GPIOE;
-	}
-
-	/* setup the DDC bus. */
-	if (IS_SDVOB(sdvo_reg))
-		intel_encoder->i2c_bus =
-			intel_i2c_create(intel_encoder,
-					 i2c_reg, "SDVOCTRL_E for SDVOB");
-	else
-		intel_encoder->i2c_bus =
-			intel_i2c_create(intel_encoder,
-					 i2c_reg, "SDVOCTRL_E for SDVOC");
-
-	if (!intel_encoder->i2c_bus)
-		goto err_inteloutput;
+	intel_sdvo->i2c = &dev_priv->gmbus[GMBUS_PORT_DPB].adapter;
 
 	intel_sdvo->slave_addr = intel_sdvo_get_slave_addr(dev, sdvo_reg);
 
-	/* Save the bit-banging i2c functionality for use by the DDC wrapper */
-	intel_sdvo_i2c_bit_algo.functionality = intel_encoder->i2c_bus->algo->functionality;
-
 	/* Read the regs to test if we can talk to the device */
 	for (i = 0; i < 0x40; i++) {
-		if (!intel_sdvo_read_byte(intel_sdvo, i, &ch[i])) {
+		u8 byte;
+
+		if (!intel_sdvo_read_byte(intel_sdvo, i, &byte)) {
 			DRM_DEBUG_KMS("No SDVO device found on SDVO%c\n",
 				      IS_SDVOB(sdvo_reg) ? 'B' : 'C');
-			goto err_i2c;
+			goto err;
 		}
 	}
 
-	/* setup the DDC bus. */
-	if (IS_SDVOB(sdvo_reg)) {
-		intel_encoder->ddc_bus =
-			intel_i2c_create(intel_encoder,
-					 ddc_reg, "SDVOB DDC BUS");
+	if (IS_SDVOB(sdvo_reg))
 		dev_priv->hotplug_supported_mask |= SDVOB_HOTPLUG_INT_STATUS;
-	} else {
-		intel_encoder->ddc_bus =
-			intel_i2c_create(intel_encoder,
-					 ddc_reg, "SDVOC DDC BUS");
+	else
 		dev_priv->hotplug_supported_mask |= SDVOC_HOTPLUG_INT_STATUS;
-	}
-	if (intel_encoder->ddc_bus == NULL)
-		goto err_i2c;
-
-	/* Wrap with our custom algo which switches to DDC mode */
-	intel_encoder->ddc_bus->algo = &intel_sdvo_i2c_bit_algo;
 
 	drm_encoder_helper_add(&intel_encoder->base, &intel_sdvo_helper_funcs);
 
 	/* In default case sdvo lvds is false */
 	if (!intel_sdvo_get_capabilities(intel_sdvo, &intel_sdvo->caps))
-		goto err_i2c;
+		goto err;
 
 	if (intel_sdvo_output_setup(intel_sdvo,
 				    intel_sdvo->caps.output_flags) != true) {
 		DRM_DEBUG_KMS("SDVO output failed to setup on SDVO%c\n",
 			      IS_SDVOB(sdvo_reg) ? 'B' : 'C');
-		goto err_i2c;
+		goto err;
 	}
 
 	intel_sdvo_select_ddc_bus(dev_priv, intel_sdvo, sdvo_reg);
 
 	/* Set the input timing to the screen. Assume always input 0. */
 	if (!intel_sdvo_set_target_input(intel_sdvo))
-		goto err_i2c;
+		goto err;
 
 	if (!intel_sdvo_get_input_pixel_clock_range(intel_sdvo,
 						    &intel_sdvo->pixel_clock_min,
 						    &intel_sdvo->pixel_clock_max))
-		goto err_i2c;
+		goto err;
 
 	DRM_DEBUG_KMS("%s device VID/DID: %02X:%02X.%02X, "
 			"clock range %dMHz - %dMHz, "
@@ -2650,12 +2586,7 @@
 			(SDVO_OUTPUT_TMDS1 | SDVO_OUTPUT_RGB1) ? 'Y' : 'N');
 	return true;
 
-err_i2c:
-	if (intel_encoder->ddc_bus != NULL)
-		intel_i2c_destroy(intel_encoder->ddc_bus);
-	if (intel_encoder->i2c_bus != NULL)
-		intel_i2c_destroy(intel_encoder->i2c_bus);
-err_inteloutput:
+err:
 	drm_encoder_cleanup(&intel_encoder->base);
 	kfree(intel_sdvo);