phy: meson-gxl-usb2: add set_mode callback

Implement set_mode callback by calling the current public
function, use a temporary function name that will be removed
when the public phy_meson_gxl_usb2_set_mode is finally removed
in a following change.

Reviewed-by: Marek Vasut <marex@denx.de>
Link: https://lore.kernel.org/r/20240620-u-boot-usb-gxl-phy-set-mode-v2-1-b81c027bc02c@linaro.org
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
diff --git a/drivers/phy/meson-gxl-usb2.c b/drivers/phy/meson-gxl-usb2.c
index 92c2851..e051e66 100644
--- a/drivers/phy/meson-gxl-usb2.c
+++ b/drivers/phy/meson-gxl-usb2.c
@@ -150,6 +150,28 @@
 	phy_meson_gxl_usb2_reset(priv);
 }
 
+static int _phy_meson_gxl_usb2_set_mode(struct phy *phy, enum phy_mode mode, int submode)
+{
+	if (submode)
+		return -EOPNOTSUPP;
+
+	switch (mode) {
+	case PHY_MODE_USB_DEVICE:
+		phy_meson_gxl_usb2_set_mode(phy, USB_DR_MODE_PERIPHERAL);
+		break;
+
+	case PHY_MODE_USB_HOST:
+	case PHY_MODE_USB_OTG:
+		phy_meson_gxl_usb2_set_mode(phy, USB_DR_MODE_HOST);
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 static int phy_meson_gxl_usb2_power_on(struct phy *phy)
 {
 	struct udevice *dev = phy->dev;
@@ -161,7 +183,7 @@
 	val &= ~U2P_R0_POWER_ON_RESET;
 	regmap_write(priv->regmap, U2P_R0, val);
 
-	phy_meson_gxl_usb2_set_mode(phy, USB_DR_MODE_HOST);
+	_phy_meson_gxl_usb2_set_mode(phy, PHY_MODE_USB_HOST, 0);
 
 	return 0;
 }
@@ -183,6 +205,7 @@
 struct phy_ops meson_gxl_usb2_phy_ops = {
 	.power_on = phy_meson_gxl_usb2_power_on,
 	.power_off = phy_meson_gxl_usb2_power_off,
+	.set_mode = _phy_meson_gxl_usb2_set_mode,
 };
 
 int meson_gxl_usb2_phy_probe(struct udevice *dev)