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| author | Kever Yang <kever.yang@rock-chips.com> | 2018-02-09 10:56:23 +0800 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2018-03-31 15:59:59 +0800 |
| commit | d255fade66414271950ab605098439591a67f1ed (patch) | |
| tree | cc87586953c23c8013a6dd1b88b33f63a68a23e7 | |
| parent | 81cf7c8d45935a295991fe2cd1df286f0f47511f (diff) | |
| download | u-boot-d255fade66414271950ab605098439591a67f1ed.tar.gz u-boot-d255fade66414271950ab605098439591a67f1ed.tar.xz u-boot-d255fade66414271950ab605098439591a67f1ed.zip | |
core: add uclass_get_device_by_phandle_id() api
Add api for who can not get phandle from a device property.
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
| -rw-r--r-- | drivers/core/uclass.c | 26 | ||||
| -rw-r--r-- | include/dm/uclass.h | 16 |
2 files changed, 42 insertions, 0 deletions
diff --git a/drivers/core/uclass.c b/drivers/core/uclass.c index 1aedaa08f0..628e2e13ff 100644 --- a/drivers/core/uclass.c +++ b/drivers/core/uclass.c @@ -457,6 +457,32 @@ int uclass_get_device_by_ofnode(enum uclass_id id, ofnode node, } #if CONFIG_IS_ENABLED(OF_CONTROL) +int uclass_get_device_by_phandle_id(enum uclass_id id, uint phandle_id, + struct udevice **devp) +{ + struct udevice *dev; + struct uclass *uc; + int ret; + + *devp = NULL; + ret = uclass_get(id, &uc); + if (ret) + return ret; + + list_for_each_entry(dev, &uc->dev_head, uclass_node) { + uint phandle; + + phandle = dev_read_phandle(dev); + + if (phandle == phandle_id) { + *devp = dev; + return uclass_get_device_tail(dev, ret, devp); + } + } + + return -ENODEV; +} + int uclass_get_device_by_phandle(enum uclass_id id, struct udevice *parent, const char *name, struct udevice **devp) { diff --git a/include/dm/uclass.h b/include/dm/uclass.h index 3a01abc239..a5bf3eb831 100644 --- a/include/dm/uclass.h +++ b/include/dm/uclass.h @@ -211,6 +211,22 @@ int uclass_get_device_by_ofnode(enum uclass_id id, ofnode node, struct udevice **devp); /** + * uclass_get_device_by_phandle_id() - Get a uclass device by phandle id + * + * This searches the devices in the uclass for one with the given phandle id. + * + * The device is probed to activate it ready for use. + * + * @id: uclass ID to look up + * @phandle_id: the phandle id to look up + * @devp: Returns pointer to device (there is only one for each node) + * @return 0 if OK, -ENODEV if there is no device match the phandle, other + * -ve on error + */ +int uclass_get_device_by_phandle_id(enum uclass_id id, uint phandle_id, + 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. |