[PATCH v5 5/8] drm/bridge: pass down IRQ_HPD to the drivers

[Dmitry Baryshkov]

The DisplayPort standard defines a special kind of HPD events called
IRQ_HPD. These events are used to notify DP Source about the events on
the Sink side. Pass down the extra status to the bridge drivers via the
hpd_notify() callback, letting DP bridges to act accordingly.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at oss.qualcomm.com>
---
 drivers/gpu/drm/bridge/lontium-lt9611uxc.c     | 3 ++-
 drivers/gpu/drm/display/drm_bridge_connector.c | 2 +-
 drivers/gpu/drm/meson/meson_encoder_hdmi.c     | 3 ++-
 drivers/gpu/drm/msm/dp/dp_display.c            | 3 ++-
 drivers/gpu/drm/msm/dp/dp_drm.h                | 3 ++-
 drivers/gpu/drm/omapdrm/dss/hdmi4.c            | 3 ++-
 include/drm/drm_bridge.h                       | 3 ++-
 7 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/bridge/lontium-lt9611uxc.c b/drivers/gpu/drm/bridge/lontium-lt9611uxc.c
index b3bb7f2cebb3..b1ffbab89a16 100644
--- a/drivers/gpu/drm/bridge/lontium-lt9611uxc.c
+++ b/drivers/gpu/drm/bridge/lontium-lt9611uxc.c
@@ -429,7 +429,8 @@ static const struct drm_edid *lt9611uxc_bridge_edid_read(struct drm_bridge *brid
 
 static void lt9611uxc_bridge_hpd_notify(struct drm_bridge *bridge,
 					struct drm_connector *connector,
-					enum drm_connector_status status)
+					enum drm_connector_status status,
+					enum drm_connector_dp_event event)
 {
 	const struct drm_edid *drm_edid;
 
diff --git a/drivers/gpu/drm/display/drm_bridge_connector.c b/drivers/gpu/drm/display/drm_bridge_connector.c
index f8aa2dd1cde7..083d70017f02 100644
--- a/drivers/gpu/drm/display/drm_bridge_connector.c
+++ b/drivers/gpu/drm/display/drm_bridge_connector.c
@@ -150,7 +150,7 @@ static void drm_bridge_connector_hpd_notify(struct drm_connector *connector,
 	/* Notify all bridges in the pipeline of hotplug events. */
 	drm_for_each_bridge_in_chain(bridge_connector->encoder, bridge) {
 		if (bridge->funcs->hpd_notify)
-			bridge->funcs->hpd_notify(bridge, connector, status);
+			bridge->funcs->hpd_notify(bridge, connector, status, event);
 	}
 }
 
diff --git a/drivers/gpu/drm/meson/meson_encoder_hdmi.c b/drivers/gpu/drm/meson/meson_encoder_hdmi.c
index c4355c5cc340..a637613ae2e1 100644
--- a/drivers/gpu/drm/meson/meson_encoder_hdmi.c
+++ b/drivers/gpu/drm/meson/meson_encoder_hdmi.c
@@ -323,7 +323,8 @@ static int meson_encoder_hdmi_atomic_check(struct drm_bridge *bridge,
 
 static void meson_encoder_hdmi_hpd_notify(struct drm_bridge *bridge,
 					  struct drm_connector *connector,
-					  enum drm_connector_status status)
+					  enum drm_connector_status status,
+					  enum drm_connector_dp_event event)
 {
 	struct meson_encoder_hdmi *encoder_hdmi = bridge_to_meson_encoder_hdmi(bridge);
 
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index 4dcbd9b99d06..9308e373447c 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -1540,7 +1540,8 @@ void msm_dp_bridge_hpd_disable(struct drm_bridge *bridge)
 
 void msm_dp_bridge_hpd_notify(struct drm_bridge *bridge,
 			      struct drm_connector *connector,
-			      enum drm_connector_status status)
+			      enum drm_connector_status status,
+			      enum drm_connector_dp_event event)
 {
 	struct msm_dp_bridge *msm_dp_bridge = to_dp_bridge(bridge);
 	struct msm_dp *msm_dp_display = msm_dp_bridge->msm_dp_display;
diff --git a/drivers/gpu/drm/msm/dp/dp_drm.h b/drivers/gpu/drm/msm/dp/dp_drm.h
index da412c788503..8f2f4201da60 100644
--- a/drivers/gpu/drm/msm/dp/dp_drm.h
+++ b/drivers/gpu/drm/msm/dp/dp_drm.h
@@ -31,6 +31,7 @@ void msm_dp_bridge_hpd_enable(struct drm_bridge *bridge);
 void msm_dp_bridge_hpd_disable(struct drm_bridge *bridge);
 void msm_dp_bridge_hpd_notify(struct drm_bridge *bridge,
 			      struct drm_connector *connector,
-			      enum drm_connector_status status);
+			      enum drm_connector_status status,
+			      enum drm_connector_dp_event event);
 
 #endif /* _DP_DRM_H_ */
diff --git a/drivers/gpu/drm/omapdrm/dss/hdmi4.c b/drivers/gpu/drm/omapdrm/dss/hdmi4.c
index ea0d749265d1..47fb10628125 100644
--- a/drivers/gpu/drm/omapdrm/dss/hdmi4.c
+++ b/drivers/gpu/drm/omapdrm/dss/hdmi4.c
@@ -430,7 +430,8 @@ static void hdmi4_bridge_disable(struct drm_bridge *bridge,
 
 static void hdmi4_bridge_hpd_notify(struct drm_bridge *bridge,
 				    struct drm_connector *connector,
-				    enum drm_connector_status status)
+				    enum drm_connector_status status,
+				    enum drm_connector_dp_event event)
 {
 	struct omap_hdmi *hdmi = drm_bridge_to_hdmi(bridge);
 
diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
index ed9f77a2597a..2b3cad4bedde 100644
--- a/include/drm/drm_bridge.h
+++ b/include/drm/drm_bridge.h
@@ -509,7 +509,8 @@ struct drm_bridge_funcs {
 	 */
 	void (*hpd_notify)(struct drm_bridge *bridge,
 			   struct drm_connector *connector,
-			   enum drm_connector_status status);
+			   enum drm_connector_status status,
+			   enum drm_connector_dp_event event);
 
 	/**
 	 * @hpd_enable:

-- 
2.47.3