[PATCH RFC v2 20/24] drm/bridge: ti-sn65dsi83: implement .get_next_bridge

[Luca Ceresoli <luca.ceresoli@bootlin.com>]

Add get_next_callback func to expose the next bridge.

Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
---
 drivers/gpu/drm/bridge/ti-sn65dsi83.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi83.c b/drivers/gpu/drm/bridge/ti-sn65dsi83.c
index d32b80e7c374..05c6b1d6b9f1 100644
--- a/drivers/gpu/drm/bridge/ti-sn65dsi83.c
+++ b/drivers/gpu/drm/bridge/ti-sn65dsi83.c
@@ -295,6 +295,13 @@ static struct sn65dsi83 *bridge_to_sn65dsi83(struct drm_bridge *bridge)
 	return container_of(bridge, struct sn65dsi83, bridge);
 }
 
+static struct drm_bridge *sn65dsi83_get_next_bridge(struct drm_bridge *bridge)
+{
+	struct sn65dsi83 *ctx = bridge_to_sn65dsi83(bridge);
+
+	return ctx->panel_bridge ?: ERR_PTR(-ENODEV);
+}
+
 static int sn65dsi83_attach(struct drm_bridge *bridge,
 			    struct drm_encoder *encoder,
 			    enum drm_bridge_attach_flags flags)
@@ -796,6 +803,7 @@ sn65dsi83_atomic_get_input_bus_fmts(struct drm_bridge *bridge,
 }
 
 static const struct drm_bridge_funcs sn65dsi83_funcs = {
+	.get_next_bridge	= sn65dsi83_get_next_bridge,
 	.attach			= sn65dsi83_attach,
 	.detach			= sn65dsi83_detach,
 	.atomic_enable		= sn65dsi83_atomic_enable,
@@ -1066,6 +1074,7 @@ static int sn65dsi83_probe(struct i2c_client *client)
 	ctx->bridge.of_node = dev->of_node;
 	ctx->bridge.pre_enable_prev_first = true;
 	ctx->bridge.type = DRM_MODE_CONNECTOR_LVDS;
+	ctx->bridge.ops = DRM_BRIDGE_OP_GET_NEXT_BRIDGE;
 	drm_bridge_add(&ctx->bridge);
 
 	ret = sn65dsi83_host_attach(ctx);

-- 
2.55.0