usb: gadget: add SS descriptors to Ethernet gadget
Add SuperSpeed descriptors to the Network USB
function drivers.
This has been lightly tested using a Linux host.
I was able to ssh from device to host and host to
device, no obvious problems seen.
Signed-off-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/gadget/f_eem.c b/drivers/usb/gadget/f_eem.c
index 3e41274..046c6d0 100644
--- a/drivers/usb/gadget/f_eem.c
+++ b/drivers/usb/gadget/f_eem.c
@@ -115,6 +115,45 @@
NULL,
};
+/* super speed support: */
+
+static struct usb_endpoint_descriptor eem_ss_in_desc __initdata = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+
+ .bEndpointAddress = USB_DIR_IN,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+ .wMaxPacketSize = cpu_to_le16(1024),
+};
+
+static struct usb_endpoint_descriptor eem_ss_out_desc __initdata = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+
+ .bEndpointAddress = USB_DIR_OUT,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+ .wMaxPacketSize = cpu_to_le16(1024),
+};
+
+static struct usb_ss_ep_comp_descriptor eem_ss_bulk_comp_desc __initdata = {
+ .bLength = sizeof eem_ss_bulk_comp_desc,
+ .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+
+ /* the following 2 values can be tweaked if necessary */
+ /* .bMaxBurst = 0, */
+ /* .bmAttributes = 0, */
+};
+
+static struct usb_descriptor_header *eem_ss_function[] __initdata = {
+ /* CDC EEM control descriptors */
+ (struct usb_descriptor_header *) &eem_intf,
+ (struct usb_descriptor_header *) &eem_ss_in_desc,
+ (struct usb_descriptor_header *) &eem_ss_bulk_comp_desc,
+ (struct usb_descriptor_header *) &eem_ss_out_desc,
+ (struct usb_descriptor_header *) &eem_ss_bulk_comp_desc,
+ NULL,
+};
+
/* string descriptors: */
static struct usb_string eem_string_defs[] = {
@@ -265,7 +304,20 @@
goto fail;
}
+ if (gadget_is_superspeed(c->cdev->gadget)) {
+ eem_ss_in_desc.bEndpointAddress =
+ eem_fs_in_desc.bEndpointAddress;
+ eem_ss_out_desc.bEndpointAddress =
+ eem_fs_out_desc.bEndpointAddress;
+
+ /* copy descriptors, and track endpoint copies */
+ f->ss_descriptors = usb_copy_descriptors(eem_ss_function);
+ if (!f->ss_descriptors)
+ goto fail;
+ }
+
DBG(cdev, "CDC Ethernet (EEM): %s speed IN/%s OUT/%s\n",
+ gadget_is_superspeed(c->cdev->gadget) ? "super" :
gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full",
eem->port.in_ep->name, eem->port.out_ep->name);
return 0;
@@ -273,6 +325,8 @@
fail:
if (f->descriptors)
usb_free_descriptors(f->descriptors);
+ if (f->hs_descriptors)
+ usb_free_descriptors(f->hs_descriptors);
/* we might as well release our claims on endpoints */
if (eem->port.out_ep->desc)
@@ -292,6 +346,8 @@
DBG(c->cdev, "eem unbind\n");
+ if (gadget_is_superspeed(c->cdev->gadget))
+ usb_free_descriptors(f->ss_descriptors);
if (gadget_is_dualspeed(c->cdev->gadget))
usb_free_descriptors(f->hs_descriptors);
usb_free_descriptors(f->descriptors);