@@ -1612,19 +1612,12 @@ static irqreturn_t tc_irq_handler(int irq, void *arg)
return IRQ_HANDLED;
}
-static int tc_probe(struct i2c_client *client, const struct i2c_device_id *id)
+static int tc_probe_bridge_mode(struct tc_data *tc)
{
- struct device *dev = &client->dev;
+ struct device *dev = tc->dev;
struct drm_panel *panel;
- struct tc_data *tc;
int ret;
- tc = devm_kzalloc(dev, sizeof(*tc), GFP_KERNEL);
- if (!tc)
- return -ENOMEM;
-
- tc->dev = dev;
-
/* port@2 is the output port */
ret = drm_of_find_panel_or_bridge(dev->of_node, 2, 0, &panel, NULL);
if (ret && ret != -ENODEV)
@@ -1643,6 +1636,25 @@ static int tc_probe(struct i2c_client *client, const struct i2c_device_id *id)
tc->bridge.type = DRM_MODE_CONNECTOR_DisplayPort;
}
+ return ret;
+}
+
+static int tc_probe(struct i2c_client *client, const struct i2c_device_id *id)
+{
+ struct device *dev = &client->dev;
+ struct tc_data *tc;
+ int ret;
+
+ tc = devm_kzalloc(dev, sizeof(*tc), GFP_KERNEL);
+ if (!tc)
+ return -ENOMEM;
+
+ tc->dev = dev;
+
+ ret = tc_probe_bridge_mode(tc);
+ if (ret)
+ return ret;
+
/* Shut down GPIO is optional */
tc->sd_gpio = devm_gpiod_get_optional(dev, "shutdown", GPIOD_OUT_HIGH);
if (IS_ERR(tc->sd_gpio))
The TC358767/TC358867/TC9595 are all capable of operating in multiple modes, DPI-to-(e)DP, DSI-to-(e)DP, DSI-to-DPI. Only the first mode is currently supported. In order to support the rest of the modes without making the tc_probe() overly long, split the bridge endpoint parsing into dedicated function, where the necessary logic to detect the bridge mode based on which endpoints are connected, can be implemented. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Andrzej Hajda <a.hajda@samsung.com> Cc: Jernej Skrabec <jernej.skrabec@siol.net> Cc: Jonas Karlman <jonas@kwiboo.se> Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com> Cc: Neil Armstrong <narmstrong@baylibre.com> Cc: Sam Ravnborg <sam@ravnborg.org> --- drivers/gpu/drm/bridge/tc358767.c | 30 +++++++++++++++++++++--------- 1 file changed, 21 insertions(+), 9 deletions(-)