From 5a40fc4b934c1d1026bc401b1def8b6455ce20f0 Mon Sep 17 00:00:00 2001 From: Nagarjuna Kristam Date: Mon, 10 Feb 2020 13:41:31 +0530 Subject: 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: Nagarjuna Kristam Reviewed-by: JC Kuo Acked-by: Kishon Vijay Abraham I Signed-off-by: Thierry Reding --- drivers/phy/tegra/xusb.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'drivers/phy') diff --git a/drivers/phy/tegra/xusb.c b/drivers/phy/tegra/xusb.c index c36d168061a1..bfca2660d676 100644 --- a/drivers/phy/tegra/xusb.c +++ b/drivers/phy/tegra/xusb.c @@ -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 "); MODULE_DESCRIPTION("Tegra XUSB Pad Controller driver"); MODULE_LICENSE("GPL v2"); -- cgit v1.2.3