drm: convert drivers to use drm_of_find_panel_or_bridge
Similar to the previous commit, convert drivers open coding OF graph
parsing to use drm_of_find_panel_or_bridge instead.
This changes some error messages to debug messages (in the graph core).
Graph connections are often "no connects" depending on the particular
board, so we want to avoid spurious messages. Plus the kernel is not a
DT validator.
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Tested-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
[seanpaul dropped rockchip changes since they're now obsolete]
Signed-off-by: Sean Paul <seanpaul@chromium.org>
diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c
index de9ffb4..5c26488 100644
--- a/drivers/gpu/drm/bridge/tc358767.c
+++ b/drivers/gpu/drm/bridge/tc358767.c
@@ -1244,7 +1244,6 @@ static const struct regmap_config tc_regmap_config = {
static int tc_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
struct device *dev = &client->dev;
- struct device_node *ep;
struct tc_data *tc;
int ret;
@@ -1255,29 +1254,9 @@ static int tc_probe(struct i2c_client *client, const struct i2c_device_id *id)
tc->dev = dev;
/* port@2 is the output port */
- ep = of_graph_get_endpoint_by_regs(dev->of_node, 2, -1);
- if (ep) {
- struct device_node *remote;
-
- remote = of_graph_get_remote_port_parent(ep);
- if (!remote) {
- dev_warn(dev, "endpoint %s not connected\n",
- ep->full_name);
- of_node_put(ep);
- return -ENODEV;
- }
- of_node_put(ep);
- tc->panel = of_drm_find_panel(remote);
- if (tc->panel) {
- dev_dbg(dev, "found panel %s\n", remote->full_name);
- } else {
- dev_dbg(dev, "waiting for panel %s\n",
- remote->full_name);
- of_node_put(remote);
- return -EPROBE_DEFER;
- }
- of_node_put(remote);
- }
+ ret = drm_of_find_panel_or_bridge(dev->of_node, 2, 0, &tc->panel, NULL);
+ if (ret)
+ return ret;
/* Shut down GPIO is optional */
tc->sd_gpio = devm_gpiod_get_optional(dev, "shutdown", GPIOD_OUT_HIGH);