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device: Add find_dev_nested_path helper function

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Add find_dev_nested_path helper function to simplify finding deeply
nested devices.

BUG=b:157580724
TEST=Find bluetooth device on dalboz

Change-Id: I48fa5fcad0030fb6dcea97b9fc76e1d3d3f9b28f
Signed-off-by: Rob Barnes <robbarnes@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43776
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
This commit is contained in:
Rob Barnes 2020-07-23 08:25:42 -06:00 • committed by Patrick Georgi
commit a223e65db2
2 changed files with 31 additions and 0 deletions
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4
src/include/device/device.h
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@ -207,6 +207,10 @@ void run_bios(struct device *dev, unsigned long addr);
DEVTREE_CONST struct device *find_dev_path(
const struct bus *parent,
const struct device_path *path);
DEVTREE_CONST struct device *find_dev_nested_path(
const struct bus *parent,
const struct device_path nested_path[],
size_t nested_path_length);
struct device *alloc_find_dev(struct bus *parent, struct device_path *path);
struct device *dev_find_device(u16 vendor, u16 device, struct device *from);
struct device *dev_find_class(unsigned int class, struct device *from);