dm: core: Add a function to find a device by drvdata
It is sometimes useful to find a device in a uclass using only its driver
data. The driver data often indicates the 'subtype' of the device, e,g,
via its compatible string.
Add a function to handle this.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/drivers/core/uclass.c b/drivers/core/uclass.c
index c520ef1..61192d8 100644
--- a/drivers/core/uclass.c
+++ b/drivers/core/uclass.c
@@ -629,6 +629,23 @@
return device_probe(*devp);
}
+int uclass_first_device_drvdata(enum uclass_id id, ulong driver_data,
+ struct udevice **devp)
+{
+ struct udevice *dev;
+ struct uclass *uc;
+
+ uclass_id_foreach_dev(id, dev, uc) {
+ if (dev_get_driver_data(dev) == driver_data) {
+ *devp = dev;
+
+ return device_probe(dev);
+ }
+ }
+
+ return -ENODEV;
+}
+
int uclass_bind_device(struct udevice *dev)
{
struct uclass *uc;