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.
Reviewed-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
Tested-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx> # In both DPI to eDP and DSI to DPI mode.
Signed-off-by: Marek Vasut <marex@xxxxxxx>
Cc: Jonas Karlman <jonas@xxxxxxxxx>
Cc: Laurent Pinchart <Laurent.pinchart@xxxxxxxxxxxxxxxx>
Cc: Maxime Ripard <maxime@xxxxxxxxxx>
Cc: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
---
V2: - Rename tc_probe_bridge_mode() to tc_probe_edp_bridge_endpoint()
to better reflect that it parses the (e)DP output endpoint
V3: - Add RB from Lucas
V4: - Add TB from Lucas
V5: - No change
---
drivers/gpu/drm/bridge/tc358767.c | 30 +++++++++++++++++++++---------
1 file changed, 21 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c
index e95153d9c1499..0f24156543bae 100644
--- a/drivers/gpu/drm/bridge/tc358767.c
+++ b/drivers/gpu/drm/bridge/tc358767.c
@@ -1583,19 +1583,12 @@ 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_edp_bridge_endpoint(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)
@@ -1614,6 +1607,25 @@ 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_edp_bridge_endpoint(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))
--
2.35.1
