[PATCH 15/15] drm/msm/hdmi: wire in hpd_enable/hpd_disable bridge ops

[Dmitry Baryshkov]

The HDMI driver already has msm_hdmi_hpd_enable() and
msm_hdmi_hpd_disable() functions. Wire them into the
msm_hdmi_bridge_funcs, so that HPD  can be enabled and disabled
dynamically rather than always having HPD events generation enabled.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
---
 drivers/gpu/drm/msm/hdmi/hdmi.c        |  6 ------
 drivers/gpu/drm/msm/hdmi/hdmi.h        |  4 ++--
 drivers/gpu/drm/msm/hdmi/hdmi_bridge.c |  6 +++---
 drivers/gpu/drm/msm/hdmi/hdmi_hpd.c    | 11 +++++------
 4 files changed, 10 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c
index ec109255ee17..e1a16e20890c 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
@@ -208,12 +208,6 @@ int msm_hdmi_modeset_init(struct hdmi *hdmi,
 		goto fail;
 	}
 
-	ret = msm_hdmi_hpd_enable(hdmi->bridge);
-	if (ret < 0) {
-		DRM_DEV_ERROR(&hdmi->pdev->dev, "failed to enable HPD: %d\n", ret);
-		goto fail;
-	}
-
 	priv->bridges[priv->num_bridges++]       = hdmi->bridge;
 
 	return 0;
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.h b/drivers/gpu/drm/msm/hdmi/hdmi.h
index e07450fbb521..165b85a0b0f3 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi.h
+++ b/drivers/gpu/drm/msm/hdmi/hdmi.h
@@ -220,8 +220,8 @@ void msm_hdmi_bridge_destroy(struct drm_bridge *bridge);
 void msm_hdmi_hpd_irq(struct drm_bridge *bridge);
 enum drm_connector_status msm_hdmi_bridge_detect(
 		struct drm_bridge *bridge);
-int msm_hdmi_hpd_enable(struct drm_bridge *bridge);
-void msm_hdmi_hpd_disable(struct hdmi_bridge *hdmi_bridge);
+void msm_hdmi_hpd_enable(struct drm_bridge *bridge);
+void msm_hdmi_hpd_disable(struct drm_bridge *bridge);
 
 /*
  * i2c adapter for ddc:
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
index 01630445a664..86196f090ac9 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
@@ -13,9 +13,6 @@
 
 void msm_hdmi_bridge_destroy(struct drm_bridge *bridge)
 {
-	struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
-
-	msm_hdmi_hpd_disable(hdmi_bridge);
 	drm_bridge_remove(bridge);
 }
 
@@ -299,6 +296,9 @@ static const struct drm_bridge_funcs msm_hdmi_bridge_funcs = {
 	.mode_valid = msm_hdmi_bridge_mode_valid,
 	.get_edid = msm_hdmi_bridge_get_edid,
 	.detect = msm_hdmi_bridge_detect,
+
+	.hpd_enable = msm_hdmi_hpd_enable,
+	.hpd_disable = msm_hdmi_hpd_disable,
 };
 
 static void
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c b/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
index 2080e7c6700c..04d00b6f36fd 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
@@ -60,7 +60,7 @@ static void msm_hdmi_phy_reset(struct hdmi *hdmi)
 	}
 }
 
-int msm_hdmi_hpd_enable(struct drm_bridge *bridge)
+void msm_hdmi_hpd_enable(struct drm_bridge *bridge)
 {
 	struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
 	struct hdmi *hdmi = hdmi_bridge->hdmi;
@@ -70,8 +70,8 @@ int msm_hdmi_hpd_enable(struct drm_bridge *bridge)
 	unsigned long flags;
 
 	ret = pm_runtime_resume_and_get(dev);
-	if (ret)
-		return ret;
+	if (WARN_ON(ret))
+		return;
 
 	mutex_lock(&hdmi->state_mutex);
 	msm_hdmi_set_mode(hdmi, false);
@@ -99,12 +99,11 @@ int msm_hdmi_hpd_enable(struct drm_bridge *bridge)
 	hdmi_write(hdmi, REG_HDMI_HPD_CTRL,
 			HDMI_HPD_CTRL_ENABLE | hpd_ctrl);
 	spin_unlock_irqrestore(&hdmi->reg_lock, flags);
-
-	return 0;
 }
 
-void msm_hdmi_hpd_disable(struct hdmi_bridge *hdmi_bridge)
+void msm_hdmi_hpd_disable(struct drm_bridge *bridge)
 {
+	struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
 	struct hdmi *hdmi = hdmi_bridge->hdmi;
 	struct device *dev = &hdmi->pdev->dev;
 
-- 
2.39.2