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| author | Simon Glass <sjg@chromium.org> | 2017-05-19 02:09:09 (GMT) |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2017-06-01 13:03:08 (GMT) |
| commit | 40bb637dae10abff32ca2d952fd443e0e09fd524 (patch) | |
| tree | 7fdd59ec0d5a7cb541a3cb0addc4023b485cc577 /include/dm | |
| parent | 19c8205e6887d5e47c7dac6cd85d0376411b5444 (diff) | |
| download | u-boot-40bb637dae10abff32ca2d952fd443e0e09fd524.tar.xz | |
dm: core: Add a way to find a device by ofnode
Add a function which looks up a device by its node (either in live tree
or flat tree).
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include/dm')
| -rw-r--r-- | include/dm/uclass-internal.h | 18 | ||||
| -rw-r--r-- | include/dm/uclass.h | 17 |
2 files changed, 35 insertions, 0 deletions
diff --git a/include/dm/uclass-internal.h b/include/dm/uclass-internal.h index ad284b8..c086004 100644 --- a/include/dm/uclass-internal.h +++ b/include/dm/uclass-internal.h @@ -10,6 +10,8 @@ #ifndef _DM_UCLASS_INTERNAL_H #define _DM_UCLASS_INTERNAL_H +#include <dm/ofnode.h> + /** * uclass_get_device_tail() - handle the end of a get_device call * @@ -115,6 +117,22 @@ int uclass_find_device_by_of_offset(enum uclass_id id, int node, struct udevice **devp); /** + * uclass_find_device_by_of_node() - Find a uclass device by device tree node + * + * This searches the devices in the uclass for one attached to the given + * device tree node. + * + * The device is NOT probed, it is merely returned. + * + * @id: ID to look up + * @node: Device tree offset to search for (if NULL then -ENODEV is returned) + * @devp: Returns pointer to device (there is only one for each node) + * @return 0 if OK, -ve on error + */ +int uclass_find_device_by_ofnode(enum uclass_id id, ofnode node, + struct udevice **devp); + +/** * uclass_bind_device() - Associate device with a uclass * * Connect the device into uclass's list of devices. diff --git a/include/dm/uclass.h b/include/dm/uclass.h index b583aa8..7f5a130 100644 --- a/include/dm/uclass.h +++ b/include/dm/uclass.h @@ -10,6 +10,7 @@ #ifndef _DM_UCLASS_H #define _DM_UCLASS_H +#include <dm/ofnode.h> #include <dm/uclass-id.h> #include <linker_lists.h> #include <linux/list.h> @@ -186,6 +187,22 @@ int uclass_get_device_by_of_offset(enum uclass_id id, int node, struct udevice **devp); /** + * uclass_get_device_by_ofnode() - Get a uclass device by device tree node + * + * This searches the devices in the uclass for one attached to the given + * device tree node. + * + * The device is probed to activate it ready for use. + * + * @id: ID to look up + * @np: Device tree node to search for (if NULL then -ENODEV is returned) + * @devp: Returns pointer to device (there is only one for each node) + * @return 0 if OK, -ve on error + */ +int uclass_get_device_by_ofnode(enum uclass_id id, ofnode node, + struct udevice **devp); + +/** * uclass_get_device_by_phandle() - Get a uclass device by phandle * * This searches the devices in the uclass for one with the given phandle. |