8 files changed, 77 insertions, 10 deletions

diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c
index a5ec7f37c185..e1626a1d5c45 100644
--- a/drivers/video/omap2/dss/dispc.c
+++ b/drivers/video/omap2/dss/dispc.c
@@ -401,7 +401,7 @@ void dispc_runtime_put(void)
 
 	DSSDBG("dispc_runtime_put\n");
 
-	r = pm_runtime_put(&dispc.pdev->dev);
+	r = pm_runtime_put_sync(&dispc.pdev->dev);
 	WARN_ON(r < 0);
 }
 
diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c
index d4d676c82c12..52f36ec1c8bb 100644
--- a/drivers/video/omap2/dss/dsi.c
+++ b/drivers/video/omap2/dss/dsi.c
@@ -1079,7 +1079,7 @@ void dsi_runtime_put(struct platform_device *dsidev)
 
 	DSSDBG("dsi_runtime_put\n");
 
-	r = pm_runtime_put(&dsi->pdev->dev);
+	r = pm_runtime_put_sync(&dsi->pdev->dev);
 	WARN_ON(r < 0);
 }
 
diff --git a/drivers/video/omap2/dss/dss.c b/drivers/video/omap2/dss/dss.c
index 17033457ee89..77c2b5a32b5d 100644
--- a/drivers/video/omap2/dss/dss.c
+++ b/drivers/video/omap2/dss/dss.c
@@ -720,7 +720,7 @@ void dss_runtime_put(void)
 
 	DSSDBG("dss_runtime_put\n");
 
-	r = pm_runtime_put(&dss.pdev->dev);
+	r = pm_runtime_put_sync(&dss.pdev->dev);
 	WARN_ON(r < 0);
 }
 
diff --git a/drivers/video/omap2/dss/hdmi.c b/drivers/video/omap2/dss/hdmi.c
index b4c270edb915..d7aa3b056529 100644
--- a/drivers/video/omap2/dss/hdmi.c
+++ b/drivers/video/omap2/dss/hdmi.c
@@ -176,7 +176,7 @@ static void hdmi_runtime_put(void)
 
 	DSSDBG("hdmi_runtime_put\n");
 
-	r = pm_runtime_put(&hdmi.pdev->dev);
+	r = pm_runtime_put_sync(&hdmi.pdev->dev);
 	WARN_ON(r < 0);
 }
 
@@ -497,6 +497,7 @@ bool omapdss_hdmi_detect(void)
 
 int omapdss_hdmi_display_enable(struct omap_dss_device *dssdev)
 {
+	struct omap_dss_hdmi_data *priv = dssdev->data;
 	int r = 0;
 
 	DSSDBG("ENTER hdmi_display_enable\n");
@@ -509,6 +510,8 @@ int omapdss_hdmi_display_enable(struct omap_dss_device *dssdev)
 		goto err0;
 	}
 
+	hdmi.ip_data.hpd_gpio = priv->hpd_gpio;
+
 	r = omap_dss_start_device(dssdev);
 	if (r) {
 		DSSERR("failed to start device\n");
diff --git a/drivers/video/omap2/dss/rfbi.c b/drivers/video/omap2/dss/rfbi.c
index 814bb9500dca..55f398014f33 100644
--- a/drivers/video/omap2/dss/rfbi.c
+++ b/drivers/video/omap2/dss/rfbi.c
@@ -140,7 +140,7 @@ static void rfbi_runtime_put(void)
 
 	DSSDBG("rfbi_runtime_put\n");
 
-	r = pm_runtime_put(&rfbi.pdev->dev);
+	r = pm_runtime_put_sync(&rfbi.pdev->dev);
 	WARN_ON(r < 0);
 }
 
diff --git a/drivers/video/omap2/dss/ti_hdmi.h b/drivers/video/omap2/dss/ti_hdmi.h
index 7503f7f619a7..50dadba5070a 100644
--- a/drivers/video/omap2/dss/ti_hdmi.h
+++ b/drivers/video/omap2/dss/ti_hdmi.h
@@ -126,6 +126,10 @@ struct hdmi_ip_data {
 	const struct ti_hdmi_ip_ops *ops;
 	struct hdmi_config cfg;
 	struct hdmi_pll_info pll_data;
+
+	/* ti_hdmi_4xxx_ip private data. These should be in a separate struct */
+	int hpd_gpio;
+	bool phy_tx_enabled;
 };
 int ti_hdmi_4xxx_phy_enable(struct hdmi_ip_data *ip_data);
 void ti_hdmi_4xxx_phy_disable(struct hdmi_ip_data *ip_data);
diff --git a/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c b/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c
index 9af81f18f163..2d72334ca3da 100644
--- a/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c
+++ b/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c
@@ -28,6 +28,7 @@
 #include <linux/delay.h>
 #include <linux/string.h>
 #include <linux/seq_file.h>
+#include <linux/gpio.h>
 
 #include "ti_hdmi_4xxx_ip.h"
 #include "dss.h"
@@ -223,6 +224,49 @@ void ti_hdmi_4xxx_pll_disable(struct hdmi_ip_data *ip_data)
 	hdmi_set_pll_pwr(ip_data, HDMI_PLLPWRCMD_ALLOFF);
 }
 
+static int hdmi_check_hpd_state(struct hdmi_ip_data *ip_data)
+{
+	unsigned long flags;
+	bool hpd;
+	int r;
+	/* this should be in ti_hdmi_4xxx_ip private data */
+	static DEFINE_SPINLOCK(phy_tx_lock);
+
+	spin_lock_irqsave(&phy_tx_lock, flags);
+
+	hpd = gpio_get_value(ip_data->hpd_gpio);
+
+	if (hpd == ip_data->phy_tx_enabled) {
+		spin_unlock_irqrestore(&phy_tx_lock, flags);
+		return 0;
+	}
+
+	if (hpd)
+		r = hdmi_set_phy_pwr(ip_data, HDMI_PHYPWRCMD_TXON);
+	else
+		r = hdmi_set_phy_pwr(ip_data, HDMI_PHYPWRCMD_LDOON);
+
+	if (r) {
+		DSSERR("Failed to %s PHY TX power\n",
+				hpd ? "enable" : "disable");
+		goto err;
+	}
+
+	ip_data->phy_tx_enabled = hpd;
+err:
+	spin_unlock_irqrestore(&phy_tx_lock, flags);
+	return r;
+}
+
+static irqreturn_t hpd_irq_handler(int irq, void *data)
+{
+	struct hdmi_ip_data *ip_data = data;
+
+	hdmi_check_hpd_state(ip_data);
+
+	return IRQ_HANDLED;
+}
+
 int ti_hdmi_4xxx_phy_enable(struct hdmi_ip_data *ip_data)
 {
 	u16 r = 0;
@@ -232,10 +276,6 @@ int ti_hdmi_4xxx_phy_enable(struct hdmi_ip_data *ip_data)
 	if (r)
 		return r;
 
-	r = hdmi_set_phy_pwr(ip_data, HDMI_PHYPWRCMD_TXON);
-	if (r)
-		return r;
-
 	/*
 	 * Read address 0 in order to get the SCP reset done completed
 	 * Dummy access performed to make sure reset is done
@@ -257,12 +297,32 @@ int ti_hdmi_4xxx_phy_enable(struct hdmi_ip_data *ip_data)
 	/* Write to phy address 3 to change the polarity control */
 	REG_FLD_MOD(phy_base, HDMI_TXPHY_PAD_CFG_CTRL, 0x1, 27, 27);
 
+	r = request_threaded_irq(gpio_to_irq(ip_data->hpd_gpio),
+			NULL, hpd_irq_handler,
+			IRQF_DISABLED | IRQF_TRIGGER_RISING |
+			IRQF_TRIGGER_FALLING, "hpd", ip_data);
+	if (r) {
+		DSSERR("HPD IRQ request failed\n");
+		hdmi_set_phy_pwr(ip_data, HDMI_PHYPWRCMD_OFF);
+		return r;
+	}
+
+	r = hdmi_check_hpd_state(ip_data);
+	if (r) {
+		free_irq(gpio_to_irq(ip_data->hpd_gpio), ip_data);
+		hdmi_set_phy_pwr(ip_data, HDMI_PHYPWRCMD_OFF);
+		return r;
+	}
+
 	return 0;
 }
 
 void ti_hdmi_4xxx_phy_disable(struct hdmi_ip_data *ip_data)
 {
+	free_irq(gpio_to_irq(ip_data->hpd_gpio), ip_data);
+
 	hdmi_set_phy_pwr(ip_data, HDMI_PHYPWRCMD_OFF);
+	ip_data->phy_tx_enabled = false;
 }
 
 static int hdmi_core_ddc_init(struct hdmi_ip_data *ip_data)
diff --git a/drivers/video/omap2/dss/venc.c b/drivers/video/omap2/dss/venc.c
index b3e9f9091581..5c3d0f901510 100644
--- a/drivers/video/omap2/dss/venc.c
+++ b/drivers/video/omap2/dss/venc.c
@@ -401,7 +401,7 @@ static void venc_runtime_put(void)
 
 	DSSDBG("venc_runtime_put\n");
 
-	r = pm_runtime_put(&venc.pdev->dev);
+	r = pm_runtime_put_sync(&venc.pdev->dev);
 	WARN_ON(r < 0);
 }