f_sdp: Add high speed endpoint descriptor

Add HS endpoint descriptor for SDP. So that we can use high speed endpoint,
and the SDP device can send packet with 512 byte size.
Signed-off-by: NYe Li <ye.li@nxp.com>
Signed-off-by: NPeng Fan <peng.fan@nxp.com>
Reviewed-by: NLukasz Majewski <lukma@denx.de>

drivers/usb/gadget/f_sdp.c

@@ -159,6 +159,16 @@ static struct usb_endpoint_descriptor in_desc = {
 	.bInterval =		1,
 };
 
+static struct usb_endpoint_descriptor in_hs_desc = {
+	.bLength =		USB_DT_ENDPOINT_SIZE,
+	.bDescriptorType =	USB_DT_ENDPOINT, /*USB_DT_CS_ENDPOINT*/
+
+	.bEndpointAddress =	1 | USB_DIR_IN,
+	.bmAttributes =	USB_ENDPOINT_XFER_INT,
+	.wMaxPacketSize =	512,
+	.bInterval =		1,
+};
+
 static struct usb_descriptor_header *sdp_runtime_descs[] = {
 	(struct usb_descriptor_header *)&sdp_intf_runtime,
 	(struct usb_descriptor_header *)&sdp_hid_desc,
@@ -166,6 +176,13 @@ static struct usb_descriptor_header *sdp_runtime_descs[] = {
 	NULL,
 };
 
+static struct usb_descriptor_header *sdp_runtime_hs_descs[] = {
+	(struct usb_descriptor_header *)&sdp_intf_runtime,
+	(struct usb_descriptor_header *)&sdp_hid_desc,
+	(struct usb_descriptor_header *)&in_hs_desc,
+	NULL,
+};
+
 /* This is synchronized with what the SoC implementation reports */
 static struct hid_report sdp_hid_report = {
 	.usage_page = {
@@ -489,6 +506,11 @@ static int sdp_bind(struct usb_configuration *c, struct usb_function *f)
 		goto error;
 	}
 
+	if (gadget_is_dualspeed(gadget)) {
+		/* Assume endpoint addresses are the same for both speeds */
+		in_hs_desc.bEndpointAddress = in_desc.bEndpointAddress;
+	}
+
 	sdp->in_ep = ep; /* Store IN EP for enabling @ setup */
 
 	cdev->req->context = sdp;
@@ -541,11 +563,15 @@ static int sdp_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
 {
 	struct f_sdp *sdp = func_to_sdp(f);
 	struct usb_composite_dev *cdev = f->config->cdev;
+	struct usb_gadget *gadget = cdev->gadget;
 	int result;
 
 	debug("%s: intf: %d alt: %d\n", __func__, intf, alt);
 
-	result = usb_ep_enable(sdp->in_ep, &in_desc);
+	if (gadget_is_dualspeed(gadget) && gadget->speed == USB_SPEED_HIGH)
+		result = usb_ep_enable(sdp->in_ep, &in_hs_desc);
+	else
+		result = usb_ep_enable(sdp->in_ep, &in_desc);
 	if (result)
 		return result;
 	sdp->in_req = sdp_start_ep(sdp->in_ep);
@@ -591,7 +617,7 @@ static int sdp_bind_config(struct usb_configuration *c)
 	memset(sdp_func, 0, sizeof(*sdp_func));
 
 	sdp_func->usb_function.name = "sdp";
-	sdp_func->usb_function.hs_descriptors = sdp_runtime_descs;
+	sdp_func->usb_function.hs_descriptors = sdp_runtime_hs_descs;
 	sdp_func->usb_function.descriptors = sdp_runtime_descs;
 	sdp_func->usb_function.bind = sdp_bind;
 	sdp_func->usb_function.unbind = sdp_unbind;