It is sometimes useful to be able to find a device before probing it, perhaps to set up some platform data for it. Allow finding by of_offset also.
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v9: None Changes in v2: None
drivers/core/uclass.c | 4 ++-- include/dm/uclass-internal.h | 16 ++++++++++++++++ 2 files changed, 18 insertions(+), 2 deletions(-)
diff --git a/drivers/core/uclass.c b/drivers/core/uclass.c index e1acefe..12095e7 100644 --- a/drivers/core/uclass.c +++ b/drivers/core/uclass.c @@ -254,8 +254,8 @@ int uclass_find_device_by_seq(enum uclass_id id, int seq_or_req_seq, return -ENODEV; }
-static int uclass_find_device_by_of_offset(enum uclass_id id, int node, - struct udevice **devp) +int uclass_find_device_by_of_offset(enum uclass_id id, int node, + struct udevice **devp) { struct uclass *uc; struct udevice *dev; diff --git a/include/dm/uclass-internal.h b/include/dm/uclass-internal.h index b51e1da..ad284b8 100644 --- a/include/dm/uclass-internal.h +++ b/include/dm/uclass-internal.h @@ -99,6 +99,22 @@ int uclass_find_device_by_seq(enum uclass_id id, int seq_or_req_seq, bool find_req_seq, struct udevice **devp);
/** + * uclass_find_device_by_of_offset() - Find a uclass device by device tree node + * + * This searches the devices in the uclass for one attached to the given + * device tree node. + * + * The device is NOT probed, it is merely returned. + * + * @id: ID to look up + * @node: Device tree offset to search for (if -ve then -ENODEV is returned) + * @devp: Returns pointer to device (there is only one for each node) + * @return 0 if OK, -ve on error + */ +int uclass_find_device_by_of_offset(enum uclass_id id, int node, + struct udevice **devp); + +/** * uclass_bind_device() - Associate device with a uclass * * Connect the device into uclass's list of devices.