Commit 5a40fc4b authored by Nagarjuna Kristam's avatar Nagarjuna Kristam Committed by Thierry Reding
Browse files

phy: tegra: xusb: Add support to get companion USB 3 port 



Tegra XUSB host, device mode driver requires the USB 3 companion port
number for corresponding USB 2 port. Add API to retrieve the same.

Signed-off-by: default avatarNagarjuna Kristam <nkristam@nvidia.com>
Reviewed-by: default avatarJC Kuo <jckuo@nvidia.com>
Acked-by: default avatarKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
parent e8f7d2f4

drivers/phy/tegra/xusb.c

+21 −0
Original line number Diff line number Diff line
@@ -1299,6 +1299,27 @@ int tegra_phy_xusb_utmi_port_reset(struct phy *phy) 
}

EXPORT_SYMBOL_GPL(tegra_phy_xusb_utmi_port_reset);



int tegra_xusb_padctl_get_usb3_companion(struct tegra_xusb_padctl *padctl,

				    unsigned int port)

{

	struct tegra_xusb_usb2_port *usb2;

	struct tegra_xusb_usb3_port *usb3;

	int i;



	usb2 = tegra_xusb_find_usb2_port(padctl, port);

	if (!usb2)

		return -EINVAL;



	for (i = 0; i < padctl->soc->ports.usb3.count; i++) {

		usb3 = tegra_xusb_find_usb3_port(padctl, i);

		if (usb3 && usb3->port == usb2->base.index)

			return usb3->base.index;

	}



	return -ENODEV;

}

EXPORT_SYMBOL_GPL(tegra_xusb_padctl_get_usb3_companion);



MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");

MODULE_DESCRIPTION("Tegra XUSB Pad Controller driver");

MODULE_LICENSE("GPL v2");

include/linux/phy/tegra/xusb.h

+2 −0
Original line number Diff line number Diff line
@@ -21,4 +21,6 @@ int tegra_xusb_padctl_usb3_set_lfps_detect(struct tegra_xusb_padctl *padctl, 
int tegra_xusb_padctl_set_vbus_override(struct tegra_xusb_padctl *padctl,

					bool val);

int tegra_phy_xusb_utmi_port_reset(struct phy *phy);

int tegra_xusb_padctl_get_usb3_companion(struct tegra_xusb_padctl *padctl,

					 unsigned int port);

#endif /* PHY_TEGRA_XUSB_H */