Add api for who can not get phandle from a device property.
Signed-off-by: Kever Yang <kever.y...@rock-chips.com>
---
Changes in v2:
- use uint instead of int for phandle
- address comment from Philipp
drivers/core/uclass.c | 26 ++++++++++++++++++++++++++
include/dm/uclass.h | 16 ++++++++++++++++
2 files changed, 42 insertions(+)
diff --git a/drivers/core/uclass.c b/drivers/core/uclass.c
index f5e4067..274b833 100644
--- a/drivers/core/uclass.c
+++ b/drivers/core/uclass.c
@@ -443,6 +443,32 @@ 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 1818849..63cb6e9 100644
--- a/include/dm/uclass.h
+++ b/include/dm/uclass.h
@@ -203,6 +203,22 @@ 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.
--
1.9.1
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