phy: core: Add devm_of_phy_get to phy-core

Adding devm_of_phy_get will allow to get phys by supplying a
pointer to the struct device_node instead of struct device.

Signed-off-by: Kamil Debski <k.debski@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
index 7c1b0e14a235..623b71c54b3e 100644
--- a/drivers/phy/phy-core.c
+++ b/drivers/phy/phy-core.c
@@ -526,6 +526,37 @@ struct phy *devm_phy_optional_get(struct device *dev, const char *string)
 EXPORT_SYMBOL_GPL(devm_phy_optional_get);
 
 /**
+ * devm_of_phy_get() - lookup and obtain a reference to a phy.
+ * @dev: device that requests this phy
+ * @np: node containing the phy
+ * @con_id: name of the phy from device's point of view
+ *
+ * Gets the phy using of_phy_get(), and associates a device with it using
+ * devres. On driver detach, release function is invoked on the devres data,
+ * then, devres data is freed.
+ */
+struct phy *devm_of_phy_get(struct device *dev, struct device_node *np,
+                            const char *con_id)
+{
+        struct phy **ptr, *phy;
+
+        ptr = devres_alloc(devm_phy_release, sizeof(*ptr), GFP_KERNEL);
+        if (!ptr)
+                return ERR_PTR(-ENOMEM);
+
+        phy = of_phy_get(np, con_id);
+        if (!IS_ERR(phy)) {
+                *ptr = phy;
+                devres_add(dev, ptr);
+        } else {
+                devres_free(ptr);
+        }
+
+        return phy;
+}
+EXPORT_SYMBOL_GPL(devm_of_phy_get);
+
+/**
  * phy_create() - create a new phy
  * @dev: device that is creating the new phy
  * @ops: function pointers for performing phy operations