diff options
Diffstat (limited to 'drivers/core')
| -rw-r--r-- | drivers/core/uclass.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/core/uclass.c b/drivers/core/uclass.c index c28cf6795f..a27f3d5027 100644 --- a/drivers/core/uclass.c +++ b/drivers/core/uclass.c @@ -187,6 +187,30 @@ 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) +{ + struct uclass *uc; + struct udevice *dev; + int ret; + + *devp = NULL; + if (node < 0) + return -ENODEV; + ret = uclass_get(id, &uc); + if (ret) + return ret; + + list_for_each_entry(dev, &uc->dev_head, uclass_node) { + if (dev->of_offset == node) { + *devp = dev; + return 0; + } + } + + return -ENODEV; +} + /** * uclass_get_device_tail() - handle the end of a get_device call * @@ -239,6 +263,17 @@ int uclass_get_device_by_seq(enum uclass_id id, int seq, struct udevice **devp) return uclass_get_device_tail(dev, ret, devp); } +int uclass_get_device_by_of_offset(enum uclass_id id, int node, + struct udevice **devp) +{ + struct udevice *dev; + int ret; + + *devp = NULL; + ret = uclass_find_device_by_of_offset(id, node, &dev); + return uclass_get_device_tail(dev, ret, devp); +} + int uclass_first_device(enum uclass_id id, struct udevice **devp) { struct uclass *uc; |