From c5785673bc6f4b8f2a4974979710a2c5c15eb063 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Wed, 25 Mar 2015 12:21:57 -0600 Subject: dm: core: Add device children and sibling functions Add some utility functions to check for children and for the last sibling in a device's parent. Signed-off-by: Simon Glass Reviewed-by: Marek Vasut --- drivers/core/device.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) (limited to 'drivers/core') diff --git a/drivers/core/device.c b/drivers/core/device.c index b7ed21c003..ccaa99ca63 100644 --- a/drivers/core/device.c +++ b/drivers/core/device.c @@ -490,3 +490,31 @@ fdt_addr_t dev_get_addr(struct udevice *dev) return FDT_ADDR_T_NONE; } #endif + +bool device_has_children(struct udevice *dev) +{ + return !list_empty(&dev->child_head); +} + +bool device_has_active_children(struct udevice *dev) +{ + struct udevice *child; + + for (device_find_first_child(dev, &child); + child; + device_find_next_child(&child)) { + if (device_active(child)) + return true; + } + + return false; +} + +bool device_is_last_sibling(struct udevice *dev) +{ + struct udevice *parent = dev->parent; + + if (!parent) + return false; + return list_is_last(&dev->sibling_node, &parent->child_head); +} -- cgit v1.2.3