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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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2
include/dm/uclass.h
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@ -53,6 +53,7 @@ struct udevice;
* @id: ID number of this uclass
* @post_bind: Called after a new device is bound to this uclass
* @pre_unbind: Called before a device is unbound from this uclass
* @pre_probe: Called before a new device is probed
* @post_probe: Called after a new device is probed
* @pre_remove: Called before a device is removed
* @child_post_bind: Called after a child is bound to a device in this uclass
@ -80,6 +81,7 @@ struct uclass_driver {
enum uclass_id id;
int (*post_bind)(struct udevice *dev);
int (*pre_unbind)(struct udevice *dev);
int (*pre_probe)(struct udevice *dev);
int (*post_probe)(struct udevice *dev);
int (*pre_remove)(struct udevice *dev);
int (*child_post_bind)(struct udevice *dev);