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dm: core: Add a uclass pre_probe() method for devices

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Some uclasses want to set up a device before it is probed. Add a method
for this.

An example is with PCI, where a PCI uclass wants to set up its private
data for later use. This allows the device's uclass() method to make calls
whcih use that data (for example, read PCI memory regions from device
tree, set up bus numbers).

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2015-03-05 12:25:22 -07:00
parent 02eeb1bbb1
commit 02c07b3741
7 changed files with 35 additions and 6 deletions
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10
drivers/core/uclass.c
View file

@ -391,9 +391,17 @@ int uclass_resolve_seq(struct udevice *dev)
return seq;
}
int uclass_pre_probe_child(struct udevice *dev)
int uclass_pre_probe_device(struct udevice *dev)
{
struct uclass_driver *uc_drv;
int ret;
uc_drv = dev->uclass->uc_drv;
if (uc_drv->pre_probe) {
ret = uc_drv->pre_probe(dev);
if (ret)
return ret;
}
if (!dev->parent)
return 0;