From 83c7e434c9dd3ca81f8b763e23c1881b973bcf2f Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Sun, 25 Jan 2015 08:27:10 -0700 Subject: 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 Reviewed-by: Masahiro Yamada --- include/dm/test.h | 3 +++ include/dm/uclass-internal.h | 11 +++++++++++ include/dm/uclass.h | 1 + 3 files changed, 15 insertions(+) (limited to 'include') diff --git a/include/dm/test.h b/include/dm/test.h index f08c05da81..707c69e07f 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 f718f37aff..f2f254a825 100644 --- a/include/dm/uclass-internal.h +++ b/include/dm/uclass-internal.h @@ -43,6 +43,17 @@ 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 * diff --git a/include/dm/uclass.h b/include/dm/uclass.h index 5c5b8f4208..d6c40c60dd 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; -- cgit v1.2.1