[PATCH 4/6] phy: introduce phy_get_by_index

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

The upstream (v5.6-rc1) device tree node of the stm32mp157c-dk2's OHCI
has a phys property, but not phy-names. We have no API to reference
such a phy easily (passing NULL isn't allowed). Add one.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 drivers/phy/phy-core.c  | 14 ++++++++++++++
 include/linux/phy/phy.h |  6 ++++++
 2 files changed, 20 insertions(+)

diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
index ad1e8147881b..ff6e35d16060 100644
--- a/drivers/phy/phy-core.c
+++ b/drivers/phy/phy-core.c
@@ -371,3 +371,17 @@ struct phy *phy_optional_get(struct device_d *dev, const char *string)
 	return phy;
 }
 
+/**
+ * phy_get_by_index() - lookup and obtain a reference to a phy by index.
+ * @dev: device with node that references this phy
+ * @index: index of the phy
+ *
+ * Gets the phy using _of_phy_get()
+ */
+struct phy *phy_get_by_index(struct device_d *dev, int index)
+{
+	if (!dev->device_node)
+		return ERR_PTR(-ENODEV);
+
+	return _of_phy_get(dev->device_node, index);
+}
diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h
index df480d4634ac..8a28b8e068b1 100644
--- a/include/linux/phy/phy.h
+++ b/include/linux/phy/phy.h
@@ -149,6 +149,7 @@ struct phy_provider *__of_phy_provider_register(struct device_d *dev,
 	struct of_phandle_args *args));
 void of_phy_provider_unregister(struct phy_provider *phy_provider);
 struct usb_phy *phy_to_usbphy(struct phy *phy);
+struct phy *phy_get_by_index(struct device_d *dev, int index);
 #else
 static inline int phy_init(struct phy *phy)
 {
@@ -247,6 +248,11 @@ static inline struct usb_phy *phy_to_usbphy(struct phy *phy)
 	return NULL;
 }
 
+static struct phy *phy_get_by_index(struct device_d *dev, int index)
+{
+	return ERR_PTR(-ENODEV);
+}
+
 #endif
 
 #endif /* __DRIVERS_PHY_H */
-- 
2.25.0


_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox