From b7af1a2da767c0dd283ffce3d50efd36af32df14 Mon Sep 17 00:00:00 2001 From: Przemyslaw Marczak Date: Wed, 15 Apr 2015 13:07:23 +0200 Subject: [PATCH] dm: core: uclass: add function: uclass_get_device_by_name() This commit extends the driver model uclass's API by function: - uclass_get_device_by_name() And this function returns the device if: - uclass with given ID, exists, - device with exactly given name(dev->name), exists, - device probe, doesn't return an error. The returned device is activated and ready to use. Note: This function returns the first device, which name is equal to the given one. This means, that using this function you must assume, that the device name is unique in the given uclass's ID device list. Signed-off-by: Przemyslaw Marczak Cc: Simon Glass Acked-by: Simon Glass --- drivers/core/uclass.c | 11 +++++++++++ include/dm/uclass.h | 15 +++++++++++++++ 2 files changed, 26 insertions(+) diff --git a/drivers/core/uclass.c b/drivers/core/uclass.c index 61e96e9a42..c1ebee77f0 100644 --- a/drivers/core/uclass.c +++ b/drivers/core/uclass.c @@ -298,6 +298,17 @@ int uclass_get_device(enum uclass_id id, int index, struct udevice **devp) return uclass_get_device_tail(dev, ret, devp); } +int uclass_get_device_by_name(enum uclass_id id, const char *name, + struct udevice **devp) +{ + struct udevice *dev; + int ret; + + *devp = NULL; + ret = uclass_find_device_by_name(id, name, &dev); + return uclass_get_device_tail(dev, ret, devp); +} + int uclass_get_device_by_seq(enum uclass_id id, int seq, struct udevice **devp) { struct udevice *dev; diff --git a/include/dm/uclass.h b/include/dm/uclass.h index b271472618..66e0ea509c 100644 --- a/include/dm/uclass.h +++ b/include/dm/uclass.h @@ -129,6 +129,21 @@ int uclass_get(enum uclass_id key, struct uclass **ucp); */ int uclass_get_device(enum uclass_id id, int index, struct udevice **devp); +/** + * uclass_get_device_by_name() - Get a uclass device by it's name + * + * This searches the devices in the uclass for one with the given name. + * + * The device is probed to activate it ready for use. + * + * @id: ID to look up + * @name: name of a device to get + * @devp: Returns pointer to device (the first one with the name) + * @return 0 if OK, -ve on error + */ +int uclass_get_device_by_name(enum uclass_id id, const char *name, + struct udevice **devp); + /** * uclass_get_device_by_seq() - Get a uclass device based on an ID and sequence * -- 2.30.2