5.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Wayne Chang <waynec@xxxxxxxxxx> [ Upstream commit d843f031d9e90462253015bc0bd9e3852d206bf2 ] 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@xxxxxxxxxxxxxxx Signed-off-by: Wayne Chang <waynec@xxxxxxxxxx> Reviewed-by: Jon Hunter <jonathanh@xxxxxxxxxx> Tested-by: Jon Hunter <jonathanh@xxxxxxxxxx> Link: https://lore.kernel.org/r/20240307030328.1487748-2-waynec@xxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/phy/tegra/xusb.c | 13 +++++++++++++ include/linux/phy/tegra/xusb.h | 2 ++ 2 files changed, 15 insertions(+) diff --git a/drivers/phy/tegra/xusb.c b/drivers/phy/tegra/xusb.c index 8f11b293c48d1..856397def89ac 100644 --- a/drivers/phy/tegra/xusb.c +++ b/drivers/phy/tegra/xusb.c @@ -1399,6 +1399,19 @@ int tegra_xusb_padctl_get_usb3_companion(struct tegra_xusb_padctl *padctl, } EXPORT_SYMBOL_GPL(tegra_xusb_padctl_get_usb3_companion); +int tegra_xusb_padctl_get_port_number(struct phy *phy) +{ + struct tegra_xusb_lane *lane; + + if (!phy) + return -ENODEV; + + lane = phy_get_drvdata(phy); + + return lane->index; +} +EXPORT_SYMBOL_GPL(tegra_xusb_padctl_get_port_number); + MODULE_AUTHOR("Thierry Reding <treding@xxxxxxxxxx>"); MODULE_DESCRIPTION("Tegra XUSB Pad Controller driver"); MODULE_LICENSE("GPL v2"); diff --git a/include/linux/phy/tegra/xusb.h b/include/linux/phy/tegra/xusb.h index 71d956935405f..86ccd90e425c7 100644 --- a/include/linux/phy/tegra/xusb.h +++ b/include/linux/phy/tegra/xusb.h @@ -23,4 +23,6 @@ int tegra_xusb_padctl_set_vbus_override(struct tegra_xusb_padctl *padctl, 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); +int tegra_xusb_padctl_get_port_number(struct phy *phy); + #endif /* PHY_TEGRA_XUSB_H */ -- 2.43.0
