From f2fc9ff28d1c9bef7760516feadd38164044caae Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Wed, 13 Jan 2021 18:52:46 -0800 Subject: usb: ch9: Add USB 3.2 SSP attributes In preparation for USB 3.2 dual-lane support, add sublink speed attribute macros and enum usb_ssp_rate. A USB device that operates in SuperSpeed Plus may operate at different speed and lane count. These additional macros and enum values help specifying that. Signed-off-by: Thinh Nguyen Link: https://lore.kernel.org/r/ae9293ebd63a29f2a2035054753534d9eb123d74.1610592135.git.Thinh.Nguyen@synopsys.com Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/ch9.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/linux') diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h index 604c6c514a50..86c50907634e 100644 --- a/include/linux/usb/ch9.h +++ b/include/linux/usb/ch9.h @@ -36,6 +36,15 @@ #include #include +/* USB 3.2 SuperSpeed Plus phy signaling rate generation and lane count */ + +enum usb_ssp_rate { + USB_SSP_GEN_UNKNOWN = 0, + USB_SSP_GEN_2x1, + USB_SSP_GEN_1x2, + USB_SSP_GEN_2x2, +}; + /** * usb_ep_type_string() - Returns human readable-name of the endpoint type. * @ep_type: The endpoint type to return human-readable name for. If it's not -- cgit v1.2.3