[PATCH v4 4/8] drm/bridge: pass extra events to the HPD callback

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.

Bridge drivers report these events through the
drm_bridge_hpd_notify_extra(). Pass down the extra status to the HPD
callback, specified during the drm_bridge_hpd_enable(), letting
underlying drivers (e.g. drm_bridge_connector) to receive these events.

Signed-off-by: Dmitry Baryshkov <[email protected]>
---
 drivers/gpu/drm/bridge/chrontel-ch7033.c       | 3 ++-
 drivers/gpu/drm/bridge/lontium-lt8912b.c       | 3 ++-
 drivers/gpu/drm/bridge/ti-tfp410.c             | 3 ++-
 drivers/gpu/drm/display/drm_bridge_connector.c | 5 +++--
 drivers/gpu/drm/drm_bridge.c                   | 5 +++--
 include/drm/drm_bridge.h                       | 6 ++++--
 6 files changed, 16 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/bridge/chrontel-ch7033.c b/drivers/gpu/drm/bridge/chrontel-ch7033.c
index a237c65ebd69..35df99b02c9c 100644
--- a/drivers/gpu/drm/bridge/chrontel-ch7033.c
+++ b/drivers/gpu/drm/bridge/chrontel-ch7033.c
@@ -258,7 +258,8 @@ static const struct drm_connector_helper_funcs ch7033_connector_helper_funcs = {
 	.best_encoder = ch7033_connector_best_encoder,
 };
 
-static void ch7033_hpd_event(void *arg, enum drm_connector_status status)
+static void ch7033_hpd_event(void *arg, enum drm_connector_status status,
+			     enum drm_connector_status_extra extra_status)
 {
 	struct ch7033_priv *priv = arg;
 
diff --git a/drivers/gpu/drm/bridge/lontium-lt8912b.c b/drivers/gpu/drm/bridge/lontium-lt8912b.c
index 729b12b67470..b8e643cf1d4d 100644
--- a/drivers/gpu/drm/bridge/lontium-lt8912b.c
+++ b/drivers/gpu/drm/bridge/lontium-lt8912b.c
@@ -505,7 +505,8 @@ static int lt8912_attach_dsi(struct lt8912 *lt)
 	return 0;
 }
 
-static void lt8912_bridge_hpd_cb(void *data, enum drm_connector_status status)
+static void lt8912_bridge_hpd_cb(void *data, enum drm_connector_status status,
+				 enum drm_connector_status_extra extra_status)
 {
 	struct lt8912 *lt = data;
 
diff --git a/drivers/gpu/drm/bridge/ti-tfp410.c b/drivers/gpu/drm/bridge/ti-tfp410.c
index bf4ab4eaf269..e2eedaaa3552 100644
--- a/drivers/gpu/drm/bridge/ti-tfp410.c
+++ b/drivers/gpu/drm/bridge/ti-tfp410.c
@@ -110,7 +110,8 @@ static void tfp410_hpd_work_func(struct work_struct *work)
 		drm_helper_hpd_irq_event(dvi->bridge.dev);
 }
 
-static void tfp410_hpd_callback(void *arg, enum drm_connector_status status)
+static void tfp410_hpd_callback(void *arg, enum drm_connector_status status,
+				enum drm_connector_status_extra extra_status)
 {
 	struct tfp410 *dvi = arg;
 
diff --git a/drivers/gpu/drm/display/drm_bridge_connector.c b/drivers/gpu/drm/display/drm_bridge_connector.c
index 046efd913064..a34643d3ddef 100644
--- a/drivers/gpu/drm/display/drm_bridge_connector.c
+++ b/drivers/gpu/drm/display/drm_bridge_connector.c
@@ -171,9 +171,10 @@ static void drm_bridge_connector_handle_hpd(struct drm_bridge_connector *drm_bri
 }
 
 static void drm_bridge_connector_hpd_cb(void *cb_data,
-					enum drm_connector_status status)
+					enum drm_connector_status status,
+					enum drm_connector_status_extra extra_status)
 {
-	drm_bridge_connector_handle_hpd(cb_data, status, DRM_CONNECTOR_NO_EXTRA_STATUS);
+	drm_bridge_connector_handle_hpd(cb_data, status, extra_status);
 }
 
 static void drm_bridge_connector_oob_hotplug_event(struct drm_connector *connector,
diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index 84e55db5c1fe..3fd3e7bac588 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -1445,7 +1445,8 @@ EXPORT_SYMBOL_GPL(drm_bridge_edid_read);
  */
 void drm_bridge_hpd_enable(struct drm_bridge *bridge,
 			   void (*cb)(void *data,
-				      enum drm_connector_status status),
+				      enum drm_connector_status status,
+				      enum drm_connector_status_extra extra_status),
 			   void *data)
 {
 	if (!(bridge->ops & DRM_BRIDGE_OP_HPD))
@@ -1513,7 +1514,7 @@ void drm_bridge_hpd_notify_extra(struct drm_bridge *bridge,
 {
 	mutex_lock(&bridge->hpd_mutex);
 	if (bridge->hpd_cb)
-		bridge->hpd_cb(bridge->hpd_data, status);
+		bridge->hpd_cb(bridge->hpd_data, status, extra_status);
 	mutex_unlock(&bridge->hpd_mutex);
 }
 EXPORT_SYMBOL_GPL(drm_bridge_hpd_notify_extra);
diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
index 78b0d83ef2aa..6a5edfda2ddd 100644
--- a/include/drm/drm_bridge.h
+++ b/include/drm/drm_bridge.h
@@ -1260,7 +1260,8 @@ struct drm_bridge {
 	 * @hpd_cb: Hot plug detection callback, registered with
 	 * drm_bridge_hpd_enable().
 	 */
-	void (*hpd_cb)(void *data, enum drm_connector_status status);
+	void (*hpd_cb)(void *data, enum drm_connector_status status,
+		       enum drm_connector_status_extra extra_status);
 	/**
 	 * @hpd_data: Private data passed to the Hot plug detection callback
 	 * @hpd_cb.
@@ -1578,7 +1579,8 @@ const struct drm_edid *drm_bridge_edid_read(struct drm_bridge *bridge,
 					    struct drm_connector *connector);
 void drm_bridge_hpd_enable(struct drm_bridge *bridge,
 			   void (*cb)(void *data,
-				      enum drm_connector_status status),
+				      enum drm_connector_status status,
+				      enum drm_connector_status_extra extra_status),
 			   void *data);
 void drm_bridge_hpd_disable(struct drm_bridge *bridge);
 void drm_bridge_hpd_notify_extra(struct drm_bridge *bridge,

-- 
2.47.3


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