diff options
| -rw-r--r-- | drivers/usb/core/hub.c | 8 | ||||
| -rw-r--r-- | include/linux/usb.h | 4 | ||||
| -rw-r--r-- | include/uapi/linux/usb/ch11.h | 5 |
3 files changed, 17 insertions, 0 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 9e79bcf03cde..e21cc3be18b7 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2746,6 +2746,14 @@ static int hub_port_wait_reset(struct usb_hub *hub, int port1, if (!udev) return 0; + if (hub_is_superspeedplus(hub->hdev)) { + /* extended portstatus Rx and Tx lane count are zero based */ + udev->rx_lanes = USB_EXT_PORT_RX_LANES(ext_portstatus) + 1; + udev->tx_lanes = USB_EXT_PORT_TX_LANES(ext_portstatus) + 1; + } else { + udev->rx_lanes = 1; + udev->tx_lanes = 1; + } if (hub_is_wusb(hub)) udev->speed = USB_SPEED_WIRELESS; else if (hub_is_superspeedplus(hub->hdev) && diff --git a/include/linux/usb.h b/include/linux/usb.h index 0173597e59aa..beffceec4915 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -551,6 +551,8 @@ struct usb3_lpm_parameters { * @route: tree topology hex string for use with xHCI * @state: device state: configured, not attached, etc. * @speed: device speed: high/full/low (or error) + * @rx_lanes: number of rx lanes in use, USB 3.2 adds dual-lane support + * @tx_lanes: number of tx lanes in use, USB 3.2 adds dual-lane support * @tt: Transaction Translator info; used with low/full speed dev, highspeed hub * @ttport: device port on that tt hub * @toggle: one bit for each endpoint, with ([0] = IN, [1] = OUT) endpoints @@ -624,6 +626,8 @@ struct usb_device { u32 route; enum usb_device_state state; enum usb_device_speed speed; + unsigned int rx_lanes; + unsigned int tx_lanes; struct usb_tt *tt; int ttport; diff --git a/include/uapi/linux/usb/ch11.h b/include/uapi/linux/usb/ch11.h index 29c120c88747..fb0cd24c392c 100644 --- a/include/uapi/linux/usb/ch11.h +++ b/include/uapi/linux/usb/ch11.h @@ -197,6 +197,11 @@ struct usb_port_status { #define USB_EXT_PORT_STAT_RX_LANES 0x00000f00 #define USB_EXT_PORT_STAT_TX_LANES 0x0000f000 +#define USB_EXT_PORT_RX_LANES(p) \ + (((p) & USB_EXT_PORT_STAT_RX_LANES) >> 8) +#define USB_EXT_PORT_TX_LANES(p) \ + (((p) & USB_EXT_PORT_STAT_TX_LANES) >> 12) + /* * wHubCharacteristics (masks) * See USB 2.0 spec Table 11-13, offset 3 |