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media: hi556: Return -EPROBE_DEFER if no endpoint is found

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With ipu bridge, endpoints may only be created when ipu bridge has
initialised. This may happen after the sensor driver has first probed.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
This commit is contained in:
Hans de Goede 2024-04-15 15:10:35 +02:00 • committed by Hans Verkuil
parent bcbafe5a05
commit 7d968b5bad
1 changed files with 12 additions and 11 deletions
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23
drivers/media/i2c/hi556.c
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@ -1206,8 +1206,18 @@ static int hi556_check_hwcfg(struct device *dev)
int ret = 0;
unsigned int i, j;
if (!fwnode)
return -ENXIO;
/*
* Sometimes the fwnode graph is initialized by the bridge driver,
* wait for this.
*/
ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
if (!ep)
return -EPROBE_DEFER;
ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
fwnode_handle_put(ep);
if (ret)
return ret;
ret = fwnode_property_read_u32(fwnode, "clock-frequency", &mclk);
if (ret) {
@ -1220,15 +1230,6 @@ static int hi556_check_hwcfg(struct device *dev)
return -EINVAL;
}
ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
if (!ep)
return -ENXIO;
ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
fwnode_handle_put(ep);
if (ret)
return ret;
if (bus_cfg.bus.mipi_csi2.num_data_lanes != 2) {
dev_err(dev, "number of CSI2 data lanes %d is not supported",
bus_cfg.bus.mipi_csi2.num_data_lanes);