From e7c865620e569df493e67d3772673108fce62064 Mon Sep 17 00:00:00 2001 From: Jean-Jacques Hiblot Date: Thu, 9 Aug 2018 16:17:42 +0200 Subject: uclass: Add dev_get_uclass_index() to get the uclass/index of a device This function is the reciprocal of uclass_find_device(). It will be used to print the index information in dm tree dump. Signed-off-by: Jean-Jacques Hiblot --- drivers/core/uclass.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'drivers/core/uclass.c') diff --git a/drivers/core/uclass.c b/drivers/core/uclass.c index d609b170e1..3113d6a56b 100644 --- a/drivers/core/uclass.c +++ b/drivers/core/uclass.c @@ -171,6 +171,27 @@ enum uclass_id uclass_get_by_name(const char *name) return UCLASS_INVALID; } +int dev_get_uclass_index(struct udevice *dev, struct uclass **ucp) +{ + struct udevice *iter; + struct uclass *uc = dev->uclass; + int i = 0; + + if (list_empty(&uc->dev_head)) + return -ENODEV; + + list_for_each_entry(iter, &uc->dev_head, uclass_node) { + if (iter == dev) { + if (ucp) + *ucp = uc; + return i; + } + i++; + } + + return -ENODEV; +} + int uclass_find_device(enum uclass_id id, int index, struct udevice **devp) { struct uclass *uc; -- cgit v1.2.3