diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile
index 68221f6..2698ccd 100644
--- a/drivers/gpu/drm/msm/Makefile
+++ b/drivers/gpu/drm/msm/Makefile
@@ -12,6 +12,7 @@ msm-y := \
 	hdmi/hdmi_i2c.o \
 	hdmi/hdmi_phy_8960.o \
 	hdmi/hdmi_phy_8x60.o \
+	hdmi/hdmi_phy_8x74.o \
 	mdp/mdp_format.o \
 	mdp/mdp_kms.o \
 	mdp/mdp4/mdp4_crtc.o \
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c
index 32f26f8..6f1588a 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
@@ -41,7 +41,7 @@ void hdmi_set_mode(struct hdmi *hdmi, bool power_on)
 			power_on ? "Enable" : "Disable", ctrl);
 }
 
-static irqreturn_t hdmi_irq(int irq, void *dev_id)
+irqreturn_t hdmi_irq(int irq, void *dev_id)
 {
 	struct hdmi *hdmi = dev_id;
 
@@ -71,13 +71,13 @@ void hdmi_destroy(struct kref *kref)
 }
 
 /* initialize connector */
-int hdmi_init(struct drm_device *dev, struct drm_encoder *encoder)
+struct hdmi *hdmi_init(struct drm_device *dev, struct drm_encoder *encoder)
 {
 	struct hdmi *hdmi = NULL;
 	struct msm_drm_private *priv = dev->dev_private;
 	struct platform_device *pdev = hdmi_pdev;
 	struct hdmi_platform_config *config;
-	int ret;
+	int i, ret;
 
 	if (!pdev) {
 		dev_err(dev->dev, "no hdmi device\n");
@@ -99,6 +99,7 @@ int hdmi_init(struct drm_device *dev, struct drm_encoder *encoder)
 
 	hdmi->dev = dev;
 	hdmi->pdev = pdev;
+	hdmi->config = config;
 	hdmi->encoder = encoder;
 
 	/* not sure about which phy maps to which msm.. probably I miss some */
@@ -114,44 +115,70 @@ int hdmi_init(struct drm_device *dev, struct drm_encoder *encoder)
 		goto fail;
 	}
 
-	hdmi->mmio = msm_ioremap(pdev, "hdmi_msm_hdmi_addr", "HDMI");
+	hdmi->mmio = msm_ioremap(pdev, config->mmio_name, "HDMI");
 	if (IS_ERR(hdmi->mmio)) {
 		ret = PTR_ERR(hdmi->mmio);
 		goto fail;
 	}
 
-	hdmi->mvs = devm_regulator_get(&pdev->dev, "8901_hdmi_mvs");
-	if (IS_ERR(hdmi->mvs))
-		hdmi->mvs = devm_regulator_get(&pdev->dev, "8921_hdmi_mvs");
-	if (IS_ERR(hdmi->mvs)) {
-		ret = PTR_ERR(hdmi->mvs);
-		dev_err(dev->dev, "failed to get mvs regulator: %d\n", ret);
-		goto fail;
+	BUG_ON(config->hpd_reg_cnt > ARRAY_SIZE(hdmi->hpd_regs));
+	for (i = 0; i < config->hpd_reg_cnt; i++) {
+		struct regulator *reg;
+
+		reg = devm_regulator_get(&pdev->dev, config->hpd_reg_names[i]);
+		if (IS_ERR(reg)) {
+			ret = PTR_ERR(reg);
+			dev_err(dev->dev, "failed to get hpd regulator: %s (%d)\n",
+					config->hpd_reg_names[i], ret);
+			goto fail;
+		}
+
+		hdmi->hpd_regs[i] = reg;
 	}
 
-	hdmi->mpp0 = devm_regulator_get(&pdev->dev, "8901_mpp0");
-	if (IS_ERR(hdmi->mpp0))
-		hdmi->mpp0 = NULL;
+	BUG_ON(config->pwr_reg_cnt > ARRAY_SIZE(hdmi->pwr_regs));
+	for (i = 0; i < config->pwr_reg_cnt; i++) {
+		struct regulator *reg;
 
-	hdmi->clk = devm_clk_get(&pdev->dev, "core_clk");
-	if (IS_ERR(hdmi->clk)) {
-		ret = PTR_ERR(hdmi->clk);
-		dev_err(dev->dev, "failed to get 'clk': %d\n", ret);
-		goto fail;
+		reg = devm_regulator_get(&pdev->dev, config->pwr_reg_names[i]);
+		if (IS_ERR(reg)) {
+			ret = PTR_ERR(reg);
+			dev_err(dev->dev, "failed to get pwr regulator: %s (%d)\n",
+					config->pwr_reg_names[i], ret);
+			goto fail;
+		}
+
+		hdmi->pwr_regs[i] = reg;
 	}
 
-	hdmi->m_pclk = devm_clk_get(&pdev->dev, "master_iface_clk");
-	if (IS_ERR(hdmi->m_pclk)) {
-		ret = PTR_ERR(hdmi->m_pclk);
-		dev_err(dev->dev, "failed to get 'm_pclk': %d\n", ret);
-		goto fail;
+	BUG_ON(config->hpd_clk_cnt > ARRAY_SIZE(hdmi->hpd_clks));
+	for (i = 0; i < config->hpd_clk_cnt; i++) {
+		struct clk *clk;
+
+		clk = devm_clk_get(&pdev->dev, config->hpd_clk_names[i]);
+		if (IS_ERR(clk)) {
+			ret = PTR_ERR(clk);
+			dev_err(dev->dev, "failed to get hpd clk: %s (%d)\n",
+					config->hpd_clk_names[i], ret);
+			goto fail;
+		}
+
+		hdmi->hpd_clks[i] = clk;
 	}
 
-	hdmi->s_pclk = devm_clk_get(&pdev->dev, "slave_iface_clk");
-	if (IS_ERR(hdmi->s_pclk)) {
-		ret = PTR_ERR(hdmi->s_pclk);
-		dev_err(dev->dev, "failed to get 's_pclk': %d\n", ret);
-		goto fail;
+	BUG_ON(config->pwr_clk_cnt > ARRAY_SIZE(hdmi->pwr_clks));
+	for (i = 0; i < config->pwr_clk_cnt; i++) {
+		struct clk *clk;
+
+		clk = devm_clk_get(&pdev->dev, config->pwr_clk_names[i]);
+		if (IS_ERR(clk)) {
+			ret = PTR_ERR(clk);
+			dev_err(dev->dev, "failed to get pwr clk: %s (%d)\n",
+					config->pwr_clk_names[i], ret);
+			goto fail;
+		}
+
+		hdmi->pwr_clks[i] = clk;
 	}
 
 	hdmi->i2c = hdmi_i2c_init(hdmi);
@@ -178,20 +205,22 @@ int hdmi_init(struct drm_device *dev, struct drm_encoder *encoder)
 		goto fail;
 	}
 
-	hdmi->irq = platform_get_irq(pdev, 0);
-	if (hdmi->irq < 0) {
-		ret = hdmi->irq;
-		dev_err(dev->dev, "failed to get irq: %d\n", ret);
-		goto fail;
-	}
+	if (!config->shared_irq) {
+		hdmi->irq = platform_get_irq(pdev, 0);
+		if (hdmi->irq < 0) {
+			ret = hdmi->irq;
+			dev_err(dev->dev, "failed to get irq: %d\n", ret);
+			goto fail;
+		}
 
-	ret = devm_request_threaded_irq(&pdev->dev, hdmi->irq,
-			NULL, hdmi_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
-			"hdmi_isr", hdmi);
-	if (ret < 0) {
-		dev_err(dev->dev, "failed to request IRQ%u: %d\n",
-				hdmi->irq, ret);
-		goto fail;
+		ret = devm_request_threaded_irq(&pdev->dev, hdmi->irq,
+				NULL, hdmi_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
+				"hdmi_isr", hdmi);
+		if (ret < 0) {
+			dev_err(dev->dev, "failed to request IRQ%u: %d\n",
+					hdmi->irq, ret);
+			goto fail;
+		}
 	}
 
 	encoder->bridge = hdmi->bridge;
@@ -199,7 +228,7 @@ int hdmi_init(struct drm_device *dev, struct drm_encoder *encoder)
 	priv->bridges[priv->num_bridges++]       = hdmi->bridge;
 	priv->connectors[priv->num_connectors++] = hdmi->connector;
 
-	return 0;
+	return hdmi;
 
 fail:
 	if (hdmi) {
@@ -211,37 +240,100 @@ fail:
 		hdmi_destroy(&hdmi->refcount);
 	}
 
-	return ret;
+	return ERR_PTR(ret);
 }
 
 /*
  * The hdmi device:
  */
 
+#include <linux/of_gpio.h>
+
 static int hdmi_dev_probe(struct platform_device *pdev)
 {
 	static struct hdmi_platform_config config = {};
 #ifdef CONFIG_OF
-	/* TODO */
+	struct device_node *of_node = pdev->dev.of_node;
+
+	int get_gpio(const char *name)
+	{
+		int gpio = of_get_named_gpio(of_node, name, 0);
+		if (gpio < 0) {
+			dev_err(&pdev->dev, "failed to get gpio: %s (%d)\n",
+					name, gpio);
+			gpio = -1;
+		}
+		return gpio;
+	}
+
+	/* TODO actually use DT.. */
+	static const char *hpd_reg_names[] = {"hpd-gdsc", "hpd-5v"};
+	static const char *pwr_reg_names[] = {"core-vdda", "core-vcc"};
+	static const char *hpd_clk_names[] = {"iface_clk", "core_clk", "mdp_core_clk"};
+	static const char *pwr_clk_names[] = {"extp_clk", "alt_iface_clk"};
+
+	config.phy_init      = hdmi_phy_8x74_init;
+	config.mmio_name     = "core_physical";
+	config.hpd_reg_names = hpd_reg_names;
+	config.hpd_reg_cnt   = ARRAY_SIZE(hpd_reg_names);
+	config.pwr_reg_names = pwr_reg_names;
+	config.pwr_reg_cnt   = ARRAY_SIZE(pwr_reg_names);
+	config.hpd_clk_names = hpd_clk_names;
+	config.hpd_clk_cnt   = ARRAY_SIZE(hpd_clk_names);
+	config.pwr_clk_names = pwr_clk_names;
+	config.pwr_clk_cnt   = ARRAY_SIZE(pwr_clk_names);
+	config.ddc_clk_gpio  = get_gpio("qcom,hdmi-tx-ddc-clk");
+	config.ddc_data_gpio = get_gpio("qcom,hdmi-tx-ddc-data");
+	config.hpd_gpio      = get_gpio("qcom,hdmi-tx-hpd");
+	config.mux_en_gpio   = get_gpio("qcom,hdmi-tx-mux-en");
+	config.mux_sel_gpio  = get_gpio("qcom,hdmi-tx-mux-sel");
+	config.shared_irq    = true;
+
 #else
+	static const char *hpd_clk_names[] = {
+			"core_clk", "master_iface_clk", "slave_iface_clk",
+	};
 	if (cpu_is_apq8064()) {
+		static const char *hpd_reg_names[] = {"8921_hdmi_mvs"};
 		config.phy_init      = hdmi_phy_8960_init;
+		config.mmio_name     = "hdmi_msm_hdmi_addr";
+		config.hpd_reg_names = hpd_reg_names;
+		config.hpd_reg_cnt   = ARRAY_SIZE(hpd_reg_names);
+		config.hpd_clk_names = hpd_clk_names;
+		config.hpd_clk_cnt   = ARRAY_SIZE(hpd_clk_names);
 		config.ddc_clk_gpio  = 70;
 		config.ddc_data_gpio = 71;
 		config.hpd_gpio      = 72;
-		config.pmic_gpio     = 13 + NR_GPIO_IRQS;
+		config.mux_en_gpio   = -1;
+		config.mux_sel_gpio  = 13 + NR_GPIO_IRQS;
 	} else if (cpu_is_msm8960() || cpu_is_msm8960ab()) {
+		static const char *hpd_reg_names[] = {"8921_hdmi_mvs"};
 		config.phy_init      = hdmi_phy_8960_init;
+		config.mmio_name     = "hdmi_msm_hdmi_addr";
+		config.hpd_reg_names = hpd_reg_names;
+		config.hpd_reg_cnt   = ARRAY_SIZE(hpd_reg_names);
+		config.hpd_clk_names = hpd_clk_names;
+		config.hpd_clk_cnt   = ARRAY_SIZE(hpd_clk_names);
 		config.ddc_clk_gpio  = 100;
 		config.ddc_data_gpio = 101;
 		config.hpd_gpio      = 102;
-		config.pmic_gpio     = -1;
+		config.mux_en_gpio   = -1;
+		config.mux_sel_gpio  = -1;
 	} else if (cpu_is_msm8x60()) {
+		static const char *hpd_reg_names[] = {
+				"8901_hdmi_mvs", "8901_mpp0"
+		};
 		config.phy_init      = hdmi_phy_8x60_init;
+		config.mmio_name     = "hdmi_msm_hdmi_addr";
+		config.hpd_reg_names = hpd_reg_names;
+		config.hpd_reg_cnt   = ARRAY_SIZE(hpd_reg_names);
+		config.hpd_clk_names = hpd_clk_names;
+		config.hpd_clk_cnt   = ARRAY_SIZE(hpd_clk_names);
 		config.ddc_clk_gpio  = 170;
 		config.ddc_data_gpio = 171;
 		config.hpd_gpio      = 172;
-		config.pmic_gpio     = -1;
+		config.mux_en_gpio   = -1;
+		config.mux_sel_gpio  = -1;
 	}
 #endif
 	pdev->dev.platform_data = &config;
@@ -255,10 +347,19 @@ static int hdmi_dev_remove(struct platform_device *pdev)
 	return 0;
 }
 
+static const struct of_device_id dt_match[] = {
+	{ .compatible = "qcom,hdmi-tx" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, dt_match);
+
 static struct platform_driver hdmi_driver = {
 	.probe = hdmi_dev_probe,
 	.remove = hdmi_dev_remove,
-	.driver.name = "hdmi_msm",
+	.driver = {
+		.name = "hdmi_msm",
+		.of_match_table = dt_match,
+	},
 };
 
 void __init hdmi_register(void)
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.h b/drivers/gpu/drm/msm/hdmi/hdmi.h
index 2c2ec56..41b29ad 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.h
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.h
@@ -28,6 +28,7 @@
 
 
 struct hdmi_phy;
+struct hdmi_platform_config;
 
 struct hdmi {
 	struct kref refcount;
@@ -35,14 +36,14 @@ struct hdmi {
 	struct drm_device *dev;
 	struct platform_device *pdev;
 
-	void __iomem *mmio;
+	const struct hdmi_platform_config *config;
 
-	struct regulator *mvs;        /* HDMI_5V */
-	struct regulator *mpp0;       /* External 5V */
+	void __iomem *mmio;
 
-	struct clk *clk;
-	struct clk *m_pclk;
-	struct clk *s_pclk;
+	struct regulator *hpd_regs[2];
+	struct regulator *pwr_regs[2];
+	struct clk *hpd_clks[3];
+	struct clk *pwr_clks[2];
 
 	struct hdmi_phy *phy;
 	struct i2c_adapter *i2c;
@@ -60,7 +61,29 @@ struct hdmi {
 /* platform config data (ie. from DT, or pdata) */
 struct hdmi_platform_config {
 	struct hdmi_phy *(*phy_init)(struct hdmi *hdmi);
-	int ddc_clk_gpio, ddc_data_gpio, hpd_gpio, pmic_gpio;
+	const char *mmio_name;
+
+	/* regulators that need to be on for hpd: */
+	const char **hpd_reg_names;
+	int hpd_reg_cnt;
+
+	/* regulators that need to be on for screen pwr: */
+	const char **pwr_reg_names;
+	int pwr_reg_cnt;
+
+	/* clks that need to be on for hpd: */
+	const char **hpd_clk_names;
+	int hpd_clk_cnt;
+
+	/* clks that need to be on for screen pwr (ie pixel clk): */
+	const char **pwr_clk_names;
+	int pwr_clk_cnt;
+
+	/* gpio's: */
+	int ddc_clk_gpio, ddc_data_gpio, hpd_gpio, mux_en_gpio, mux_sel_gpio;
+
+	/* older devices had their own irq, mdp5+ it is shared w/ mdp: */
+	bool shared_irq;
 };
 
 void hdmi_set_mode(struct hdmi *hdmi, bool power_on);
@@ -106,6 +129,7 @@ struct hdmi_phy {
 
 struct hdmi_phy *hdmi_phy_8960_init(struct hdmi *hdmi);
 struct hdmi_phy *hdmi_phy_8x60_init(struct hdmi *hdmi);
+struct hdmi_phy *hdmi_phy_8x74_init(struct hdmi *hdmi);
 
 /*
  * hdmi bridge:
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
index 5a8ee34..7d10e55 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
@@ -21,6 +21,7 @@ struct hdmi_bridge {
 	struct drm_bridge base;
 
 	struct hdmi *hdmi;
+	bool power_on;
 
 	unsigned long int pixclock;
 };
@@ -34,6 +35,65 @@ static void hdmi_bridge_destroy(struct drm_bridge *bridge)
 	kfree(hdmi_bridge);
 }
 
+static void power_on(struct drm_bridge *bridge)
+{
+	struct drm_device *dev = bridge->dev;
+	struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
+	struct hdmi *hdmi = hdmi_bridge->hdmi;
+	const struct hdmi_platform_config *config = hdmi->config;
+	int i, ret;
+
+	for (i = 0; i < config->pwr_reg_cnt; i++) {
+		ret = regulator_enable(hdmi->pwr_regs[i]);
+		if (ret) {
+			dev_err(dev->dev, "failed to enable pwr regulator: %s (%d)\n",
+					config->pwr_reg_names[i], ret);
+		}
+	}
+
+	if (config->pwr_clk_cnt > 0) {
+		DBG("pixclock: %lu", hdmi_bridge->pixclock);
+		ret = clk_set_rate(hdmi->pwr_clks[0], hdmi_bridge->pixclock);
+		if (ret) {
+			dev_err(dev->dev, "failed to set pixel clk: %s (%d)\n",
+					config->pwr_clk_names[0], ret);
+		}
+	}
+
+	for (i = 0; i < config->pwr_clk_cnt; i++) {
+		ret = clk_prepare_enable(hdmi->pwr_clks[i]);
+		if (ret) {
+			dev_err(dev->dev, "failed to enable pwr clk: %s (%d)\n",
+					config->pwr_clk_names[i], ret);
+		}
+	}
+}
+
+static void power_off(struct drm_bridge *bridge)
+{
+	struct drm_device *dev = bridge->dev;
+	struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
+	struct hdmi *hdmi = hdmi_bridge->hdmi;
+	const struct hdmi_platform_config *config = hdmi->config;
+	int i, ret;
+
+	/* TODO do we need to wait for final vblank somewhere before
+	 * cutting the clocks?
+	 */
+	mdelay(16 + 4);
+
+	for (i = 0; i < config->pwr_clk_cnt; i++)
+		clk_disable_unprepare(hdmi->pwr_clks[i]);
+
+	for (i = 0; i < config->pwr_reg_cnt; i++) {
+		ret = regulator_disable(hdmi->pwr_regs[i]);
+		if (ret) {
+			dev_err(dev->dev, "failed to disable pwr regulator: %s (%d)\n",
+					config->pwr_reg_names[i], ret);
+		}
+	}
+}
+
 static void hdmi_bridge_pre_enable(struct drm_bridge *bridge)
 {
 	struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
@@ -41,6 +101,12 @@ static void hdmi_bridge_pre_enable(struct drm_bridge *bridge)
 	struct hdmi_phy *phy = hdmi->phy;
 
 	DBG("power up");
+
+	if (!hdmi_bridge->power_on) {
+		power_on(bridge);
+		hdmi_bridge->power_on = true;
+	}
+
 	phy->funcs->powerup(phy, hdmi_bridge->pixclock);
 	hdmi_set_mode(hdmi, true);
 }
@@ -62,6 +128,11 @@ static void hdmi_bridge_post_disable(struct drm_bridge *bridge)
 	DBG("power down");
 	hdmi_set_mode(hdmi, false);
 	phy->funcs->powerdown(phy);
+
+	if (hdmi_bridge->power_on) {
+		power_off(bridge);
+		hdmi_bridge->power_on = false;
+	}
 }
 
 static void hdmi_bridge_mode_set(struct drm_bridge *bridge,
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_connector.c b/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
index 197b348..7dedfdd 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_connector.c
@@ -23,14 +23,14 @@
 struct hdmi_connector {
 	struct drm_connector base;
 	struct hdmi *hdmi;
+	struct work_struct hpd_work;
 };
 #define to_hdmi_connector(x) container_of(x, struct hdmi_connector, base)
 
 static int gpio_config(struct hdmi *hdmi, bool on)
 {
 	struct drm_device *dev = hdmi->dev;
-	struct hdmi_platform_config *config =
-			hdmi->pdev->dev.platform_data;
+	const struct hdmi_platform_config *config = hdmi->config;
 	int ret;
 
 	if (on) {
@@ -40,26 +40,43 @@ static int gpio_config(struct hdmi *hdmi, bool on)
 				"HDMI_DDC_CLK", config->ddc_clk_gpio, ret);
 			goto error1;
 		}
+		gpio_set_value_cansleep(config->ddc_clk_gpio, 1);
+
 		ret = gpio_request(config->ddc_data_gpio, "HDMI_DDC_DATA");
 		if (ret) {
 			dev_err(dev->dev, "'%s'(%d) gpio_request failed: %d\n",
 				"HDMI_DDC_DATA", config->ddc_data_gpio, ret);
 			goto error2;
 		}
+		gpio_set_value_cansleep(config->ddc_data_gpio, 1);
+
 		ret = gpio_request(config->hpd_gpio, "HDMI_HPD");
 		if (ret) {
 			dev_err(dev->dev, "'%s'(%d) gpio_request failed: %d\n",
 				"HDMI_HPD", config->hpd_gpio, ret);
 			goto error3;
 		}
-		if (config->pmic_gpio != -1) {
-			ret = gpio_request(config->pmic_gpio, "PMIC_HDMI_MUX_SEL");
+		gpio_direction_input(config->hpd_gpio);
+		gpio_set_value_cansleep(config->hpd_gpio, 1);
+
+		if (config->mux_en_gpio != -1) {
+			ret = gpio_request(config->mux_en_gpio, "HDMI_MUX_EN");
 			if (ret) {
 				dev_err(dev->dev, "'%s'(%d) gpio_request failed: %d\n",
-					"PMIC_HDMI_MUX_SEL", config->pmic_gpio, ret);
+					"HDMI_MUX_SEL", config->mux_en_gpio, ret);
 				goto error4;
 			}
-			gpio_set_value_cansleep(config->pmic_gpio, 0);
+			gpio_set_value_cansleep(config->mux_en_gpio, 1);
+		}
+
+		if (config->mux_sel_gpio != -1) {
+			ret = gpio_request(config->mux_sel_gpio, "HDMI_MUX_SEL");
+			if (ret) {
+				dev_err(dev->dev, "'%s'(%d) gpio_request failed: %d\n",
+					"HDMI_MUX_SEL", config->mux_sel_gpio, ret);
+				goto error5;
+			}
+			gpio_set_value_cansleep(config->mux_sel_gpio, 0);
 		}
 		DBG("gpio on");
 	} else {
@@ -67,15 +84,23 @@ static int gpio_config(struct hdmi *hdmi, bool on)
 		gpio_free(config->ddc_data_gpio);
 		gpio_free(config->hpd_gpio);
 
-		if (config->pmic_gpio != -1) {
-			gpio_set_value_cansleep(config->pmic_gpio, 1);
-			gpio_free(config->pmic_gpio);
+		if (config->mux_en_gpio != -1) {
+			gpio_set_value_cansleep(config->mux_en_gpio, 0);
+			gpio_free(config->mux_en_gpio);
+		}
+
+		if (config->mux_sel_gpio != -1) {
+			gpio_set_value_cansleep(config->mux_sel_gpio, 1);
+			gpio_free(config->mux_sel_gpio);
 		}
 		DBG("gpio off");
 	}
 
 	return 0;
 
+error5:
+	if (config->mux_en_gpio != -1)
+		gpio_free(config->mux_en_gpio);
 error4:
 	gpio_free(config->hpd_gpio);
 error3:
@@ -89,10 +114,11 @@ error1:
 static int hpd_enable(struct hdmi_connector *hdmi_connector)
 {
 	struct hdmi *hdmi = hdmi_connector->hdmi;
+	const struct hdmi_platform_config *config = hdmi->config;
 	struct drm_device *dev = hdmi_connector->base.dev;
 	struct hdmi_phy *phy = hdmi->phy;
 	uint32_t hpd_ctrl;
-	int ret;
+	int i, ret;
 
 	ret = gpio_config(hdmi, true);
 	if (ret) {
@@ -100,31 +126,22 @@ static int hpd_enable(struct hdmi_connector *hdmi_connector)
 		goto fail;
 	}
 
-	ret = clk_prepare_enable(hdmi->clk);
-	if (ret) {
-		dev_err(dev->dev, "failed to enable 'clk': %d\n", ret);
-		goto fail;
-	}
-
-	ret = clk_prepare_enable(hdmi->m_pclk);
-	if (ret) {
-		dev_err(dev->dev, "failed to enable 'm_pclk': %d\n", ret);
-		goto fail;
-	}
-
-	ret = clk_prepare_enable(hdmi->s_pclk);
-	if (ret) {
-		dev_err(dev->dev, "failed to enable 's_pclk': %d\n", ret);
-		goto fail;
+	for (i = 0; i < config->hpd_clk_cnt; i++) {
+		ret = clk_prepare_enable(hdmi->hpd_clks[i]);
+		if (ret) {
+			dev_err(dev->dev, "failed to enable hpd clk: %s (%d)\n",
+					config->hpd_clk_names[i], ret);
+			goto fail;
+		}
 	}
 
-	if (hdmi->mpp0)
-		ret = regulator_enable(hdmi->mpp0);
-	if (!ret)
-		ret = regulator_enable(hdmi->mvs);
-	if (ret) {
-		dev_err(dev->dev, "failed to enable regulators: %d\n", ret);
-		goto fail;
+	for (i = 0; i < config->hpd_reg_cnt; i++) {
+		ret = regulator_enable(hdmi->hpd_regs[i]);
+		if (ret) {
+			dev_err(dev->dev, "failed to enable hpd regulator: %s (%d)\n",
+					config->hpd_reg_names[i], ret);
+			goto fail;
+		}
 	}
 
 	hdmi_set_mode(hdmi, false);
@@ -157,26 +174,26 @@ fail:
 static int hdp_disable(struct hdmi_connector *hdmi_connector)
 {
 	struct hdmi *hdmi = hdmi_connector->hdmi;
+	const struct hdmi_platform_config *config = hdmi->config;
 	struct drm_device *dev = hdmi_connector->base.dev;
-	int ret = 0;
+	int i, ret = 0;
 
 	/* Disable HPD interrupt */
 	hdmi_write(hdmi, REG_HDMI_HPD_INT_CTRL, 0);
 
 	hdmi_set_mode(hdmi, false);
 
-	if (hdmi->mpp0)
-		ret = regulator_disable(hdmi->mpp0);
-	if (!ret)
-		ret = regulator_disable(hdmi->mvs);
-	if (ret) {
-		dev_err(dev->dev, "failed to enable regulators: %d\n", ret);
-		goto fail;
+	for (i = 0; i < config->hpd_reg_cnt; i++) {
+		ret = regulator_disable(hdmi->hpd_regs[i]);
+		if (ret) {
+			dev_err(dev->dev, "failed to disable hpd regulator: %s (%d)\n",
+					config->hpd_reg_names[i], ret);
+			goto fail;
+		}
 	}
 
-	clk_disable_unprepare(hdmi->clk);
-	clk_disable_unprepare(hdmi->m_pclk);
-	clk_disable_unprepare(hdmi->s_pclk);
+	for (i = 0; i < config->hpd_clk_cnt; i++)
+		clk_disable_unprepare(hdmi->hpd_clks[i]);
 
 	ret = gpio_config(hdmi, false);
 	if (ret) {
@@ -190,9 +207,19 @@ fail:
 	return ret;
 }
 
+static void
+hotplug_work(struct work_struct *work)
+{
+	struct hdmi_connector *hdmi_connector =
+		container_of(work, struct hdmi_connector, hpd_work);
+	struct drm_connector *connector = &hdmi_connector->base;
+	drm_helper_hpd_irq_event(connector->dev);
+}
+
 void hdmi_connector_irq(struct drm_connector *connector)
 {
 	struct hdmi_connector *hdmi_connector = to_hdmi_connector(connector);
+	struct msm_drm_private *priv = connector->dev->dev_private;
 	struct hdmi *hdmi = hdmi_connector->hdmi;
 	uint32_t hpd_int_status, hpd_int_ctrl;
 
@@ -210,13 +237,13 @@ void hdmi_connector_irq(struct drm_connector *connector)
 		hdmi_write(hdmi, REG_HDMI_HPD_INT_CTRL,
 				hpd_int_ctrl | HDMI_HPD_INT_CTRL_INT_ACK);
 
-		drm_helper_hpd_irq_event(connector->dev);
-
 		/* detect disconnect if we are connected or visa versa: */
 		hpd_int_ctrl = HDMI_HPD_INT_CTRL_INT_EN;
 		if (!detected)
 			hpd_int_ctrl |= HDMI_HPD_INT_CTRL_INT_CONNECT;
 		hdmi_write(hdmi, REG_HDMI_HPD_INT_CTRL, hpd_int_ctrl);
+
+		queue_work(priv->wq, &hdmi_connector->hpd_work);
 	}
 }
 
@@ -225,6 +252,7 @@ static enum drm_connector_status hdmi_connector_detect(
 {
 	struct hdmi_connector *hdmi_connector = to_hdmi_connector(connector);
 	struct hdmi *hdmi = hdmi_connector->hdmi;
+	const struct hdmi_platform_config *config = hdmi->config;
 	uint32_t hpd_int_status;
 	int retry = 20;
 
@@ -234,6 +262,14 @@ static enum drm_connector_status hdmi_connector_detect(
 	 * let that trick us into thinking the monitor is gone:
 	 */
 	while (retry-- && !(hpd_int_status & HDMI_HPD_INT_STATUS_CABLE_DETECTED)) {
+		/* hdmi debounce logic seems to get stuck sometimes,
+		 * read directly the gpio to get a second opinion:
+		 */
+		if (gpio_get_value(config->hpd_gpio)) {
+			DBG("gpio tells us we are connected!");
+			hpd_int_status |= HDMI_HPD_INT_STATUS_CABLE_DETECTED;
+			break;
+		}
 		mdelay(10);
 		hpd_int_status = hdmi_read(hdmi, REG_HDMI_HPD_INT_STATUS);
 		DBG("status=%08x", hpd_int_status);
@@ -286,6 +322,8 @@ static int hdmi_connector_mode_valid(struct drm_connector *connector,
 				 struct drm_display_mode *mode)
 {
 	struct hdmi_connector *hdmi_connector = to_hdmi_connector(connector);
+	struct hdmi *hdmi = hdmi_connector->hdmi;
+	const struct hdmi_platform_config *config = hdmi->config;
 	struct msm_drm_private *priv = connector->dev->dev_private;
 	struct msm_kms *kms = priv->kms;
 	long actual, requested;
@@ -294,6 +332,13 @@ static int hdmi_connector_mode_valid(struct drm_connector *connector,
 	actual = kms->funcs->round_pixclk(kms,
 			requested, hdmi_connector->hdmi->encoder);
 
+	/* for mdp5/apq8074, we manage our own pixel clk (as opposed to
+	 * mdp4/dtv stuff where pixel clk is assigned to mdp/encoder
+	 * instead):
+	 */
+	if (config->pwr_clk_cnt > 0)
+		actual = clk_round_rate(hdmi->pwr_clks[0], actual);
+
 	DBG("requested=%ld, actual=%ld", requested, actual);
 
 	if (actual != requested)
@@ -336,6 +381,7 @@ struct drm_connector *hdmi_connector_init(struct hdmi *hdmi)
 	}
 
 	hdmi_connector->hdmi = hdmi_reference(hdmi);
+	INIT_WORK(&hdmi_connector->hpd_work, hotplug_work);
 
 	connector = &hdmi_connector->base;
 
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_phy_8x74.c b/drivers/gpu/drm/msm/hdmi/hdmi_phy_8x74.c
new file mode 100644
index 0000000..59fa6cd
--- /dev/null
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_phy_8x74.c
@@ -0,0 +1,157 @@
+/*
+ * Copyright (C) 2013 Red Hat
+ * Author: Rob Clark <robdclark@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "hdmi.h"
+
+struct hdmi_phy_8x74 {
+	struct hdmi_phy base;
+	struct hdmi *hdmi;
+	void __iomem *mmio;
+};
+#define to_hdmi_phy_8x74(x) container_of(x, struct hdmi_phy_8x74, base)
+
+
+static void phy_write(struct hdmi_phy_8x74 *phy, u32 reg, u32 data)
+{
+	msm_writel(data, phy->mmio + reg);
+}
+
+//static u32 phy_read(struct hdmi_phy_8x74 *phy, u32 reg)
+//{
+//	return msm_readl(phy->mmio + reg);
+//}
+
+static void hdmi_phy_8x74_destroy(struct hdmi_phy *phy)
+{
+	struct hdmi_phy_8x74 *phy_8x74 = to_hdmi_phy_8x74(phy);
+	kfree(phy_8x74);
+}
+
+static void hdmi_phy_8x74_reset(struct hdmi_phy *phy)
+{
+	struct hdmi_phy_8x74 *phy_8x74 = to_hdmi_phy_8x74(phy);
+	struct hdmi *hdmi = phy_8x74->hdmi;
+	unsigned int val;
+
+	/* NOTE that HDMI_PHY_CTL is in core mmio, not phy mmio: */
+
+	val = hdmi_read(hdmi, REG_HDMI_PHY_CTRL);
+
+	if (val & HDMI_PHY_CTRL_SW_RESET_LOW) {
+		/* pull low */
+		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
+				val & ~HDMI_PHY_CTRL_SW_RESET);
+	} else {
+		/* pull high */
+		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
+				val | HDMI_PHY_CTRL_SW_RESET);
+	}
+
+	if (val & HDMI_PHY_CTRL_SW_RESET_PLL_LOW) {
+		/* pull low */
+		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
+				val & ~HDMI_PHY_CTRL_SW_RESET_PLL);
+	} else {
+		/* pull high */
+		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
+				val | HDMI_PHY_CTRL_SW_RESET_PLL);
+	}
+
+	msleep(100);
+
+	if (val & HDMI_PHY_CTRL_SW_RESET_LOW) {
+		/* pull high */
+		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
+				val | HDMI_PHY_CTRL_SW_RESET);
+	} else {
+		/* pull low */
+		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
+				val & ~HDMI_PHY_CTRL_SW_RESET);
+	}
+
+	if (val & HDMI_PHY_CTRL_SW_RESET_PLL_LOW) {
+		/* pull high */
+		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
+				val | HDMI_PHY_CTRL_SW_RESET_PLL);
+	} else {
+		/* pull low */
+		hdmi_write(hdmi, REG_HDMI_PHY_CTRL,
+				val & ~HDMI_PHY_CTRL_SW_RESET_PLL);
+	}
+}
+
+static void hdmi_phy_8x74_powerup(struct hdmi_phy *phy,
+		unsigned long int pixclock)
+{
+	struct hdmi_phy_8x74 *phy_8x74 = to_hdmi_phy_8x74(phy);
+
+	phy_write(phy_8x74, REG_HDMI_8x74_ANA_CFG0,   0x1b);
+	phy_write(phy_8x74, REG_HDMI_8x74_ANA_CFG1,   0xf2);
+	phy_write(phy_8x74, REG_HDMI_8x74_BIST_CFG0,  0x0);
+	phy_write(phy_8x74, REG_HDMI_8x74_BIST_PATN0, 0x0);
+	phy_write(phy_8x74, REG_HDMI_8x74_BIST_PATN1, 0x0);
+	phy_write(phy_8x74, REG_HDMI_8x74_BIST_PATN2, 0x0);
+	phy_write(phy_8x74, REG_HDMI_8x74_BIST_PATN3, 0x0);
+	phy_write(phy_8x74, REG_HDMI_8x74_PD_CTRL1,   0x20);
+}
+
+static void hdmi_phy_8x74_powerdown(struct hdmi_phy *phy)
+{
+	struct hdmi_phy_8x74 *phy_8x74 = to_hdmi_phy_8x74(phy);
+	phy_write(phy_8x74, REG_HDMI_8x74_PD_CTRL0, 0x7f);
+}
+
+static const struct hdmi_phy_funcs hdmi_phy_8x74_funcs = {
+		.destroy = hdmi_phy_8x74_destroy,
+		.reset = hdmi_phy_8x74_reset,
+		.powerup = hdmi_phy_8x74_powerup,
+		.powerdown = hdmi_phy_8x74_powerdown,
+};
+
+struct hdmi_phy *hdmi_phy_8x74_init(struct hdmi *hdmi)
+{
+	struct hdmi_phy_8x74 *phy_8x74;
+	struct hdmi_phy *phy = NULL;
+	int ret;
+
+	phy_8x74 = kzalloc(sizeof(*phy_8x74), GFP_KERNEL);
+	if (!phy_8x74) {
+		ret = -ENOMEM;
+		goto fail;
+	}
+
+	phy = &phy_8x74->base;
+
+	phy->funcs = &hdmi_phy_8x74_funcs;
+
+	phy_8x74->hdmi = hdmi;
+
+	/* for 8x74, the phy mmio is mapped separately: */
+	phy_8x74->mmio = msm_ioremap(hdmi->pdev,
+			"phy_physical", "HDMI_8x74");
+	if (IS_ERR(phy_8x74->mmio)) {
+		ret = PTR_ERR(phy_8x74->mmio);
+		goto fail;
+	}
+
+	return phy;
+
+fail:
+	if (phy)
+		hdmi_phy_8x74_destroy(phy);
+	return ERR_PTR(ret);
+}
diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c
index 4d1cc2e..272e707 100644
--- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c
+++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c
@@ -39,7 +39,7 @@ static int mdp4_hw_init(struct msm_kms *kms)
 	major = FIELD(version, MDP4_VERSION_MAJOR);
 	minor = FIELD(version, MDP4_VERSION_MINOR);
 
-	DBG("found MDP version v%d.%d", major, minor);
+	DBG("found MDP4 version v%d.%d", major, minor);
 
 	if (major != 4) {
 		dev_err(dev->dev, "unexpected MDP version: v%d.%d\n",
@@ -195,6 +195,7 @@ static int modeset_init(struct mdp4_kms *mdp4_kms)
 	struct drm_plane *plane;
 	struct drm_crtc *crtc;
 	struct drm_encoder *encoder;
+	struct hdmi *hdmi;
 	int ret;
 
 	/*
@@ -244,9 +245,10 @@ static int modeset_init(struct mdp4_kms *mdp4_kms)
 	encoder->possible_crtcs = 0x1;     /* DTV can be hooked to DMA_E */
 	priv->encoders[priv->num_encoders++] = encoder;
 
-	ret = hdmi_init(dev, encoder);
-	if (ret) {
-		dev_err(dev->dev, "failed to initialize HDMI\n");
+	hdmi = hdmi_init(dev, encoder);
+	if (IS_ERR(hdmi)) {
+		ret = PTR_ERR(hdmi);
+		dev_err(dev->dev, "failed to initialize HDMI: %d\n", ret);
 		goto fail;
 	}
 
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index 13a25f9..fe3ef9a 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -192,7 +192,9 @@ struct drm_framebuffer *msm_framebuffer_create(struct drm_device *dev,
 
 struct drm_fb_helper *msm_fbdev_init(struct drm_device *dev);
 
-int hdmi_init(struct drm_device *dev, struct drm_encoder *encoder);
+struct hdmi;
+struct hdmi *hdmi_init(struct drm_device *dev, struct drm_encoder *encoder);
+irqreturn_t hdmi_irq(int irq, void *dev_id);
 void __init hdmi_register(void);
 void __exit hdmi_unregister(void);
 
