From 84e561407a5f62a8746dcf8f920e4682690435a0 Mon Sep 17 00:00:00 2001
From: Patrice Chotard <patrice.chotard@foss.st.com>
Date: Tue, 6 Sep 2022 08:15:26 +0200
Subject: [PATCH] phy: Add generic_{setup,shutdown}_phy() helpers

In drivers usb/host/{ehci,ohci}-generic.c, {ehci,ohci}_setup_phy() and
{ehci,ohci}_shutdown_phy() shares 95% of common code.
Factorize this code in new generic_{setup,shudown}_phy() functions.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Simon Glass <sjg@chromium.org>
---
 drivers/phy/phy-uclass.c | 42 ++++++++++++++++++++++++++++++++++++++++
 include/generic-phy.h    | 30 ++++++++++++++++++++++++++++
 2 files changed, 72 insertions(+)

diff --git a/drivers/phy/phy-uclass.c b/drivers/phy/phy-uclass.c
index 8b84da3ce0..3fef5135a9 100644
--- a/drivers/phy/phy-uclass.c
+++ b/drivers/phy/phy-uclass.c
@@ -455,6 +455,48 @@ int generic_phy_power_off_bulk(struct phy_bulk *bulk)
 	return ret;
 }
 
+int generic_setup_phy(struct udevice *dev, struct phy *phy, int index)
+{
+	int ret = 0;
+
+	if (!phy)
+		return 0;
+
+	ret = generic_phy_get_by_index(dev, index, phy);
+	if (ret) {
+		if (ret != -ENOENT)
+			return ret;
+	} else {
+		ret = generic_phy_init(phy);
+		if (ret)
+			return ret;
+
+		ret = generic_phy_power_on(phy);
+		if (ret)
+			ret = generic_phy_exit(phy);
+	}
+
+	return ret;
+}
+
+int generic_shutdown_phy(struct phy *phy)
+{
+	int ret = 0;
+
+	if (!phy)
+		return 0;
+
+	if (generic_phy_valid(phy)) {
+		ret = generic_phy_power_off(phy);
+		if (ret)
+			return ret;
+
+		ret = generic_phy_exit(phy);
+	}
+
+	return ret;
+}
+
 UCLASS_DRIVER(phy) = {
 	.id		= UCLASS_PHY,
 	.name		= "phy",
diff --git a/include/generic-phy.h b/include/generic-phy.h
index d40ce589b6..f8eddeff67 100644
--- a/include/generic-phy.h
+++ b/include/generic-phy.h
@@ -342,6 +342,26 @@ int generic_phy_power_on_bulk(struct phy_bulk *bulk);
  */
 int generic_phy_power_off_bulk(struct phy_bulk *bulk);
 
+/**
+ * generic_setup_phy() - Get, initialize and power on phy.
+ *
+ * @dev:	The consumer device.
+ * @phy:	A pointer to the PHY port
+ * @index:	The index in the list of available PHYs
+ *
+ * Return: 0 if OK, or negative error code.
+ */
+int generic_setup_phy(struct udevice *dev, struct phy *phy, int index);
+
+/**
+ * generic_shutdown_phy() - Power off and de-initialize phy.
+ *
+ * @phy:	A pointer to the PHY port.
+ *
+ * Return: 0 if OK, or negative error code.
+ */
+int generic_shutdown_phy(struct phy *phy);
+
 #else /* CONFIG_PHY */
 
 static inline int generic_phy_init(struct phy *phy)
@@ -407,6 +427,16 @@ static inline int generic_phy_power_off_bulk(struct phy_bulk *bulk)
 	return 0;
 }
 
+static inline int generic_setup_phy(struct udevice *dev, struct phy *phy, int index)
+{
+	return 0;
+}
+
+static inline int generic_shutdown_phy(struct phy *phy)
+{
+	return 0;
+}
+
 #endif /* CONFIG_PHY */
 
 /**