[PATCH 05/12] drm/bridge: tfp410: convert to of_drm_find_and_get_bridge()

[Luca Ceresoli]

of_drm_find_bridge() is deprecated. Move to its replacement
of_drm_find_and_get_bridge() which gets a bridge reference, and ensure it
is put when done by using the drm_bridge::next_bridge pointer.

Signed-off-by: Luca Ceresoli <luca.ceresoli at bootlin.com>
---
 drivers/gpu/drm/bridge/ti-tfp410.c | 27 +++++++++++++--------------
 1 file changed, 13 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/bridge/ti-tfp410.c b/drivers/gpu/drm/bridge/ti-tfp410.c
index b80ee089f880..11b5bb50e9f4 100644
--- a/drivers/gpu/drm/bridge/ti-tfp410.c
+++ b/drivers/gpu/drm/bridge/ti-tfp410.c
@@ -30,7 +30,6 @@ struct tfp410 {
 	struct gpio_desc	*powerdown;
 
 	struct drm_bridge_timings timings;
-	struct drm_bridge	*next_bridge;
 
 	struct device *dev;
 };
@@ -53,8 +52,8 @@ static int tfp410_get_modes(struct drm_connector *connector)
 	const struct drm_edid *drm_edid;
 	int ret;
 
-	if (dvi->next_bridge->ops & DRM_BRIDGE_OP_EDID) {
-		drm_edid = drm_bridge_edid_read(dvi->next_bridge, connector);
+	if (dvi->bridge.next_bridge->ops & DRM_BRIDGE_OP_EDID) {
+		drm_edid = drm_bridge_edid_read(dvi->bridge.next_bridge, connector);
 		if (!drm_edid)
 			DRM_INFO("EDID read failed. Fallback to standard modes\n");
 	} else {
@@ -89,7 +88,7 @@ tfp410_connector_detect(struct drm_connector *connector, bool force)
 {
 	struct tfp410 *dvi = drm_connector_to_tfp410(connector);
 
-	return drm_bridge_detect(dvi->next_bridge, connector);
+	return drm_bridge_detect(dvi->bridge.next_bridge, connector);
 }
 
 static const struct drm_connector_funcs tfp410_con_funcs = {
@@ -126,7 +125,7 @@ static int tfp410_attach(struct drm_bridge *bridge,
 	struct tfp410 *dvi = drm_bridge_to_tfp410(bridge);
 	int ret;
 
-	ret = drm_bridge_attach(encoder, dvi->next_bridge, bridge,
+	ret = drm_bridge_attach(encoder, dvi->bridge.next_bridge, bridge,
 				DRM_BRIDGE_ATTACH_NO_CONNECTOR);
 	if (ret < 0)
 		return ret;
@@ -134,14 +133,14 @@ static int tfp410_attach(struct drm_bridge *bridge,
 	if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)
 		return 0;
 
-	if (dvi->next_bridge->ops & DRM_BRIDGE_OP_DETECT)
+	if (dvi->bridge.next_bridge->ops & DRM_BRIDGE_OP_DETECT)
 		dvi->connector.polled = DRM_CONNECTOR_POLL_HPD;
 	else
 		dvi->connector.polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
 
-	if (dvi->next_bridge->ops & DRM_BRIDGE_OP_HPD) {
+	if (dvi->bridge.next_bridge->ops & DRM_BRIDGE_OP_HPD) {
 		INIT_DELAYED_WORK(&dvi->hpd_work, tfp410_hpd_work_func);
-		drm_bridge_hpd_enable(dvi->next_bridge, tfp410_hpd_callback,
+		drm_bridge_hpd_enable(dvi->bridge.next_bridge, tfp410_hpd_callback,
 				      dvi);
 	}
 
@@ -149,8 +148,8 @@ static int tfp410_attach(struct drm_bridge *bridge,
 				 &tfp410_con_helper_funcs);
 	ret = drm_connector_init_with_ddc(bridge->dev, &dvi->connector,
 					  &tfp410_con_funcs,
-					  dvi->next_bridge->type,
-					  dvi->next_bridge->ddc);
+					  dvi->bridge.next_bridge->type,
+					  dvi->bridge.next_bridge->ddc);
 	if (ret) {
 		dev_err(dvi->dev, "drm_connector_init_with_ddc() failed: %d\n",
 			ret);
@@ -169,8 +168,8 @@ static void tfp410_detach(struct drm_bridge *bridge)
 {
 	struct tfp410 *dvi = drm_bridge_to_tfp410(bridge);
 
-	if (dvi->connector.dev && dvi->next_bridge->ops & DRM_BRIDGE_OP_HPD) {
-		drm_bridge_hpd_disable(dvi->next_bridge);
+	if (dvi->connector.dev && dvi->bridge.next_bridge->ops & DRM_BRIDGE_OP_HPD) {
+		drm_bridge_hpd_disable(dvi->bridge.next_bridge);
 		cancel_delayed_work_sync(&dvi->hpd_work);
 	}
 }
@@ -362,10 +361,10 @@ static int tfp410_init(struct device *dev, bool i2c)
 	if (!node)
 		return -ENODEV;
 
-	dvi->next_bridge = of_drm_find_bridge(node);
+	dvi->bridge.next_bridge = of_drm_find_and_get_bridge(node);
 	of_node_put(node);
 
-	if (!dvi->next_bridge)
+	if (!dvi->bridge.next_bridge)
 		return -EPROBE_DEFER;
 
 	/* Get the powerdown GPIO. */

-- 
2.52.0