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authorSimon Glass <sjg@chromium.org>2015-01-25 08:27:10 -0700
committerSimon Glass <sjg@chromium.org>2015-01-29 17:09:56 -0700
commit83c7e434c9dd3ca81f8b763e23c1881b973bcf2f (patch)
treec0fc096ee51bbcd66ccabd77826e236f49329845 /include/dm
parent1603bf3cc189da65362b83b85831e094a2fe8516 (diff)
dm: core: Allow uclass to set up a device's child before it is probed
Some buses need to set up their devices before they can be used. This setup may well be common to all buses in a particular uclass. Support a common pre-probe method for the uclass, called before any bus devices are probed. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Diffstat (limited to 'include/dm')
-rw-r--r--include/dm/test.h3
-rw-r--r--include/dm/uclass-internal.h11
-rw-r--r--include/dm/uclass.h1
3 files changed, 15 insertions, 0 deletions
diff --git a/include/dm/test.h b/include/dm/test.h
index f08c05da814..707c69e07f0 100644
--- a/include/dm/test.h
+++ b/include/dm/test.h
@@ -67,6 +67,8 @@ enum {
struct dm_test_priv {
int ping_total;
int op_count[DM_TEST_OP_COUNT];
+ int uclass_flag;
+ int uclass_total;
};
/**
@@ -88,6 +90,7 @@ struct dm_test_uclass_priv {
*
* @sum: Test value used to check parent data works correctly
* @flag: Used to track calling of parent operations
+ * @uclass_flag: Used to track calling of parent operations by uclass
*/
struct dm_test_parent_data {
int sum;
diff --git a/include/dm/uclass-internal.h b/include/dm/uclass-internal.h
index f718f37affb..f2f254a8259 100644
--- a/include/dm/uclass-internal.h
+++ b/include/dm/uclass-internal.h
@@ -44,6 +44,17 @@ int uclass_bind_device(struct udevice *dev);
int uclass_unbind_device(struct udevice *dev);
/**
+ * uclass_pre_probe_child() - Deal with a child that is about to be probed
+ *
+ * Perform any pre-processing that is needed by the uclass before it can be
+ * probed.
+ *
+ * @dev: Pointer to the device
+ * #return 0 on success, -ve on error
+ */
+int uclass_pre_probe_child(struct udevice *dev);
+
+/**
* uclass_post_probe_device() - Deal with a device that has just been probed
*
* Perform any post-processing of a probed device that is needed by the
diff --git a/include/dm/uclass.h b/include/dm/uclass.h
index 5c5b8f42083..d6c40c60dda 100644
--- a/include/dm/uclass.h
+++ b/include/dm/uclass.h
@@ -83,6 +83,7 @@ struct uclass_driver {
int (*post_probe)(struct udevice *dev);
int (*pre_remove)(struct udevice *dev);
int (*child_post_bind)(struct udevice *dev);
+ int (*child_pre_probe)(struct udevice *dev);
int (*init)(struct uclass *class);
int (*destroy)(struct uclass *class);
int priv_auto_alloc_size;