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phy: tegra: xusb: Add API to retrieve the port number of phy
This patch introduces a new API, tegra_xusb_padctl_get_port_number, to the Tegra XUSB Pad Controller driver. This API is used to identify the USB port that is associated with a given PHY. The function takes a PHY pointer for either a USB2 PHY or USB3 PHY as input and returns the corresponding port number. If the PHY pointer is invalid, it returns -ENODEV. Cc: stable@vger.kernel.org Signed-off-by: Wayne Chang <waynec@nvidia.com> Reviewed-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Link: https://lore.kernel.org/r/20240307030328.1487748-2-waynec@nvidia.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -1531,6 +1531,19 @@ int tegra_xusb_padctl_get_usb3_companion(struct tegra_xusb_padctl *padctl,
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}
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EXPORT_SYMBOL_GPL(tegra_xusb_padctl_get_usb3_companion);
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int tegra_xusb_padctl_get_port_number(struct phy *phy)
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{
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struct tegra_xusb_lane *lane;
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if (!phy)
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return -ENODEV;
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lane = phy_get_drvdata(phy);
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return lane->index;
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}
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EXPORT_SYMBOL_GPL(tegra_xusb_padctl_get_port_number);
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MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
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MODULE_DESCRIPTION("Tegra XUSB Pad Controller driver");
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MODULE_LICENSE("GPL v2");
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@ -26,6 +26,7 @@ void tegra_phy_xusb_utmi_pad_power_down(struct phy *phy);
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int tegra_phy_xusb_utmi_port_reset(struct phy *phy);
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int tegra_xusb_padctl_get_usb3_companion(struct tegra_xusb_padctl *padctl,
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unsigned int port);
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int tegra_xusb_padctl_get_port_number(struct phy *phy);
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int tegra_xusb_padctl_enable_phy_sleepwalk(struct tegra_xusb_padctl *padctl, struct phy *phy,
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enum usb_device_speed speed);
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int tegra_xusb_padctl_disable_phy_sleepwalk(struct tegra_xusb_padctl *padctl, struct phy *phy);
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