Unlike what can be found for other DRM entities, we don't have a
DRM-managed function equivalent to devm_drm_of_get_bridge().
Let's create it.
Signed-off-by: Maxime Ripard <max...@cerno.tech>
---
drivers/gpu/drm/bridge/panel.c | 35 ++++++++++++++++++++++++++++++++++
include/drm/drm_bridge.h | 2 ++
2 files changed, 37 insertions(+)
diff --git a/drivers/gpu/drm/bridge/panel.c b/drivers/gpu/drm/bridge/panel.c
index 07d720aa38c6..0bf824ca1f25 100644
--- a/drivers/gpu/drm/bridge/panel.c
+++ b/drivers/gpu/drm/bridge/panel.c
@@ -425,4 +425,39 @@ struct drm_bridge *devm_drm_of_get_bridge(struct device
*dev,
return bridge;
}
EXPORT_SYMBOL(devm_drm_of_get_bridge);
+
+/**
+ * drmm_of_get_bridge - Return next bridge in the chain
+ * @dev: device to tie the bridge lifetime to
+ * @np: device tree node containing encoder output ports
+ * @port: port in the device tree node
+ * @endpoint: endpoint in the device tree node
+ *
+ * Given a DT node's port and endpoint number, finds the connected node
+ * and returns the associated bridge if any, or creates and returns a
+ * drm panel bridge instance if a panel is connected.
+ *
+ * Returns a pointer to the bridge if successful, or an error pointer
+ * otherwise.
+ */
+struct drm_bridge *drmm_of_get_bridge(struct drm_device *drm,
+ struct device_node *np,
+ u32 port, u32 endpoint)
+{
+ struct drm_bridge *bridge;
+ struct drm_panel *panel;
+ int ret;
+
+ ret = drm_of_find_panel_or_bridge(np, port, endpoint,
+ &panel, &bridge);
+ if (ret)
+ return ERR_PTR(ret);
+
+ if (panel)
+ bridge = drmm_panel_bridge_add(drm, panel);
+
+ return bridge;
+}
+EXPORT_SYMBOL(drmm_of_get_bridge);
+
#endif
diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
index 8100a15dd9c2..ddb92e745b2e 100644
--- a/include/drm/drm_bridge.h
+++ b/include/drm/drm_bridge.h
@@ -935,6 +935,8 @@ struct drm_connector *drm_panel_bridge_connector(struct
drm_bridge *bridge);
#if defined(CONFIG_OF) && defined(CONFIG_DRM_PANEL_BRIDGE)
struct drm_bridge *devm_drm_of_get_bridge(struct device *dev, struct
device_node *node,
u32 port, u32 endpoint);
+struct drm_bridge *drmm_of_get_bridge(struct drm_device *drm, struct
device_node *node,
+ u32 port, u32 endpoint);
#else
static inline struct drm_bridge *devm_drm_of_get_bridge(struct device *dev,
struct device_node
*node,
--
2.36.1
