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usb: gadget: get ep mult and maxburst for rockchip superspeed

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For Rockchip platforms, they may need to get the mult and
maxburst of endpoints for USB superspeed gadget when bind
USB functions (e.g. uvc_function_bind), then the USB DWC3
controller can do Tx fifos resize properly for each endpoints.

Change-Id: I7baddbc0dc515c91d82ca4bc1960531919ed6008
Signed-off-by: William Wu <william.wu@rock-chips.com>
This commit is contained in:
William Wu
2021-05-07 11:15:50 +08:00
committed by Tao Huang
parent 23ce756d92
commit 3e41649e10
1 changed files with 17 additions and 2 deletions
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19
drivers/usb/gadget/epautoconf.c
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@@ -125,9 +125,24 @@ found_ep:
ep->claimed = true;
#ifdef CONFIG_ARCH_ROCKCHIP
ep->transfer_type = type;
if (type == USB_ENDPOINT_XFER_ISOC ||
type == USB_ENDPOINT_XFER_INT)
if (gadget_is_superspeed(gadget) && ep_comp) {
switch (type) {
case USB_ENDPOINT_XFER_ISOC:
/* mult: bits 1:0 of bmAttributes */
ep->mult = (ep_comp->bmAttributes & 0x3) + 1;
/* fall through */
case USB_ENDPOINT_XFER_BULK:
case USB_ENDPOINT_XFER_INT:
ep->maxburst = ep_comp->bMaxBurst + 1;
break;
default:
break;
}
} else if (gadget_is_dualspeed(gadget) &&
(type == USB_ENDPOINT_XFER_ISOC ||
type == USB_ENDPOINT_XFER_INT)) {
ep->mult = usb_endpoint_maxp_mult(desc);
}
#endif
return ep;
}