Add api for who can not get phandle from a device property.

Signed-off-by: Kever Yang <kever.y...@rock-chips.com>
---

 drivers/core/uclass.c | 28 ++++++++++++++++++++++++++++
 include/dm/uclass.h   | 16 ++++++++++++++++
 2 files changed, 44 insertions(+)

diff --git a/drivers/core/uclass.c b/drivers/core/uclass.c
index f5e4067..dd7a89c 100644
--- a/drivers/core/uclass.c
+++ b/drivers/core/uclass.c
@@ -443,6 +443,34 @@ 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, int phandle_id,
+                                   struct udevice **devp)
+{
+       struct udevice *dev;
+       struct uclass *uc;
+       int ret;
+
+       *devp = NULL;
+       ret = uclass_get(id, &uc);
+       if (ret)
+               return ret;
+
+       ret = -ENODEV;
+       list_for_each_entry(dev, &uc->dev_head, uclass_node) {
+               uint phandle;
+
+               phandle = dev_read_phandle(dev);
+
+               if (phandle == phandle_id) {
+                       *devp = dev;
+                       ret = 0;
+                       break;
+               }
+       }
+
+       return uclass_get_device_tail(dev, ret, devp);
+}
+
 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..f6fe785 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, int 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

_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
https://lists.denx.de/listinfo/u-boot

Reply via email to