From db615c6264cffcd8f117c5628db1794afbd0f254 Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Wed, 13 Jan 2021 18:53:00 -0800 Subject: [PATCH] usb: gadget: Introduce SSP rates and lanes A USB device controller operating in SuperSpeed Plus may support gen2x1, gen1x2, and/or gen2x2. Introduce SuperSpeed Plus signaling rate generation and lane count to usb_gadget with the fields ssp_rate and max_ssp_rate. The gadget driver can use these to setup the device BOS descriptor and select the desire operating speed and number of lanes. Signed-off-by: Thinh Nguyen Link: https://lore.kernel.org/r/b6d2196dcc3c73747f91abf9a082b20bbe276cc4.1610592135.git.Thinh.Nguyen@synopsys.com Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/gadget.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index e7351d6..02483c8 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -339,6 +339,10 @@ struct usb_gadget_ops { * @speed: Speed of current connection to USB host. * @max_speed: Maximal speed the UDC can handle. UDC must support this * and all slower speeds. + * @ssp_rate: Current connected SuperSpeed Plus signaling rate and lane count. + * @max_ssp_rate: Maximum SuperSpeed Plus signaling rate and lane count the UDC + * can handle. The UDC must support this and all slower speeds and lower + * number of lanes. * @state: the state we are now (attached, suspended, configured, etc) * @name: Identifies the controller hardware type. Used in diagnostics * and sometimes configuration. @@ -406,6 +410,11 @@ struct usb_gadget { struct list_head ep_list; /* of usb_ep */ enum usb_device_speed speed; enum usb_device_speed max_speed; + + /* USB SuperSpeed Plus only */ + enum usb_ssp_rate ssp_rate; + enum usb_ssp_rate max_ssp_rate; + enum usb_device_state state; const char *name; struct device dev; -- 2.7.4