diff options
Diffstat (limited to 'include/dm/uclass-internal.h')
| -rw-r--r-- | include/dm/uclass-internal.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/dm/uclass-internal.h b/include/dm/uclass-internal.h index 1434db3..f718f37 100644 --- a/include/dm/uclass-internal.h +++ b/include/dm/uclass-internal.h @@ -82,4 +82,27 @@ struct uclass *uclass_find(enum uclass_id key); */ int uclass_destroy(struct uclass *uc); +/** + * uclass_find_device_by_seq() - Find uclass device based on ID and sequence + * + * This searches for a device with the given seq or req_seq. + * + * For seq, if an active device has this sequence it will be returned. + * If there is no such device then this will return -ENODEV. + * + * For req_seq, if a device (whether activated or not) has this req_seq + * value, that device will be returned. This is a strong indication that + * the device will receive that sequence when activated. + * + * The device is NOT probed, it is merely returned. + * + * @id: ID to look up + * @seq_or_req_seq: Sequence number to find (0=first) + * @find_req_seq: true to find req_seq, false to find seq + * @devp: Returns pointer to device (there is only one per for each seq) + * @return 0 if OK, -ve on error + */ +int uclass_find_device_by_seq(enum uclass_id id, int seq_or_req_seq, + bool find_req_seq, struct udevice **devp); + #endif |