phy: tegra: xusb: add [set/clear]_vbus_override()

This commit adds tegra_xusb_padctl_set_vbus_override() and tegra_xusb_padctl_clear_vbus_override() that can be used to change port role of a dual-role USB (otg-capable) USB2/USB3 port. Bug 1843963 Change-Id: I89c240d781779e35daa21dff343609ec3dd29300 Signed-off-by: JC Kuo <[email protected]>
RealDigitalMedia · Feb 2, 2017 · 2694127 · 2694127
1 parent e15a977
commit 2694127
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diff --git a/drivers/phy/tegra/xusb.c b/drivers/phy/tegra/xusb.c
@@ -1033,6 +1033,24 @@ int tegra_xusb_padctl_usb3_set_lfps_detect(struct tegra_xusb_padctl *padctl,
 }
 EXPORT_SYMBOL_GPL(tegra_xusb_padctl_usb3_set_lfps_detect);
 
+int tegra_xusb_padctl_set_vbus_override(struct tegra_xusb_padctl *padctl)
+{
+	if (padctl->soc->ops->vbus_override)
+		return padctl->soc->ops->vbus_override(padctl, true);
+
+	return -ENOSYS;
+}
+EXPORT_SYMBOL_GPL(tegra_xusb_padctl_set_vbus_override);
+
+int tegra_xusb_padctl_clear_vbus_override(struct tegra_xusb_padctl *padctl)
+{
+	if (padctl->soc->ops->vbus_override)
+		return padctl->soc->ops->vbus_override(padctl, false);
+
+	return -ENOSYS;
+}
+EXPORT_SYMBOL_GPL(tegra_xusb_padctl_clear_vbus_override);
+
 MODULE_AUTHOR("Thierry Reding <[email protected]>");
 MODULE_DESCRIPTION("Tegra XUSB Pad Controller driver");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/phy/tegra/xusb.h b/drivers/phy/tegra/xusb.h
@@ -361,6 +361,7 @@ struct tegra_xusb_padctl_ops {
 			     unsigned int index, bool idle);
 	int (*usb3_set_lfps_detect)(struct tegra_xusb_padctl *padctl,
 				    unsigned int index, bool enable);
+	int (*vbus_override)(struct tegra_xusb_padctl *padctl, bool set);
 };
 
 struct tegra_xusb_padctl_soc {

diff --git a/include/linux/phy/tegra/xusb.h b/include/linux/phy/tegra/xusb.h
@@ -26,5 +26,7 @@ int tegra_xusb_padctl_hsic_set_idle(struct tegra_xusb_padctl *padctl,
 				    unsigned int port, bool idle);
 int tegra_xusb_padctl_usb3_set_lfps_detect(struct tegra_xusb_padctl *padctl,
 					   unsigned int port, bool enable);
+int tegra_xusb_padctl_set_vbus_override(struct tegra_xusb_padctl *padctl);
+int tegra_xusb_padctl_clear_vbus_override(struct tegra_xusb_padctl *padctl);
 
 #endif /* PHY_TEGRA_XUSB_H */