From 2694127cc2c05a399d3be26d6b2df2224cd70ebc Mon Sep 17 00:00:00 2001
From: JC Kuo <jckuo@nvidia.com>
Date: Fri, 16 Dec 2016 13:10:41 +0800
Subject: [PATCH] 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 <jckuo@nvidia.com>
---
drivers/phy/tegra/xusb.c | 18 ++++++++++++++++++
drivers/phy/tegra/xusb.h | 1 +
include/linux/phy/tegra/xusb.h | 2 ++
3 files changed, 21 insertions(+)
diff --git a/drivers/phy/tegra/xusb.c b/drivers/phy/tegra/xusb.c
index 43f921bad4938c..fb30a31b962b78 100644
--- 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 <treding@nvidia.com>");
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
index a1d69b4885c138..5f93d9ab44822b 100644
--- 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
index 8e1a57a78d9fa7..bd00855fb5b9e6 100644
--- 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 */