From 5a7627a9ea3b70b4e9760f4c21afe5f25bb6c0a7 Mon Sep 17 00:00:00 2001
From: Algea Cao <algea.cao@rock-chips.com>
Date: Thu, 28 Sep 2017 17:17:59 +0800
Subject: [PATCH] drm: bridge: dw-hdmi: set hdmi ddc pin HI-Z when suspend

Set hdmi ddc pin HI-Z to save power.

Change-Id: Ic5e15cac43c486e7de6be8526daea9b36da68bc8
Signed-off-by: Algea Cao <algea.cao@rock-chips.com>
---
 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index 58820d0fae14..2efe163f1867 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -21,6 +21,7 @@
 #include <linux/of_device.h>
 #include <linux/regmap.h>
 #include <linux/spinlock.h>
+#include <linux/pinctrl/consumer.h>
 
 #include <drm/drm_of.h>
 #include <drm/drmP.h>
@@ -3903,6 +3904,7 @@ void dw_hdmi_suspend(struct device *dev)
 	if (hdmi->irq)
 		disable_irq(hdmi->irq);
 	mutex_unlock(&hdmi->mutex);
+	pinctrl_pm_select_sleep_state(dev);
 }
 EXPORT_SYMBOL_GPL(dw_hdmi_suspend);
 
@@ -3910,6 +3912,7 @@ void dw_hdmi_resume(struct device *dev)
 {
 	struct dw_hdmi *hdmi = dev_get_drvdata(dev);
 
+	pinctrl_pm_select_default_state(dev);
 	mutex_lock(&hdmi->mutex);
 	dw_hdmi_reg_initial(hdmi);
 	if (hdmi->irq)