dm: syscon: Allow finding devices by driver data
We have a way to find a regmap by its syscon driver data value. Add the same
for syscon itself.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/drivers/core/syscon-uclass.c b/drivers/core/syscon-uclass.c
index 686c320..a0666d0 100644
--- a/drivers/core/syscon-uclass.c
+++ b/drivers/core/syscon-uclass.c
@@ -32,7 +32,7 @@
return regmap_init_mem(dev, &priv->regmap);
}
-struct regmap *syscon_get_regmap_by_driver_data(ulong driver_data)
+int syscon_get_by_driver_data(ulong driver_data, struct udevice **devp)
{
struct udevice *dev;
struct uclass *uc;
@@ -40,22 +40,29 @@
ret = uclass_get(UCLASS_SYSCON, &uc);
if (ret)
- return ERR_PTR(ret);
+ return ret;
uclass_foreach_dev(dev, uc) {
if (dev->driver_data == driver_data) {
- struct syscon_uc_info *priv;
- int ret;
-
- ret = device_probe(dev);
- if (ret)
- return ERR_PTR(ret);
- priv = dev_get_uclass_priv(dev);
-
- return priv->regmap;
+ *devp = dev;
+ return device_probe(dev);
}
}
+ return -ENODEV;
+}
+
+struct regmap *syscon_get_regmap_by_driver_data(ulong driver_data)
+{
+ struct syscon_uc_info *priv;
+ struct udevice *dev;
+ int ret;
+
+ ret = syscon_get_by_driver_data(driver_data, &dev);
+ if (ret)
+ return ERR_PTR(ret);
+ priv = dev_get_uclass_priv(dev);
+
- return ERR_PTR(-ENODEV);
+ return priv->regmap;
}
void *syscon_get_first_range(ulong driver_data)