Commit 3a8a3b1c authored Dec 21, 2009 by Bryan Wu Committed by Greg Kroah-Hartman Mar 02, 2010

USB: gadget: use ep5 for bulk-in and ep6 for bulk-out for Blackfin MUSB



Normally, the musb uses ep1 as the bidirectional bulk endpoint.  This won't
work on the Blackfin musb as all endpoints (except ep0) are unidirectional.
Further, ep1-ep4 have a small 128 byte FIFO which makes them undesirable
for bulk endpoints (which need more like a 512 byte FIFO).  This leaves us
with ep5-ep7 which have 1024 byte FIFOs and can be configured as either
in/out and bulk/interrupt/iso on the fly.

Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

parent ca0e9485

drivers/usb/gadget/epautoconf.c

+14 −0

Original line number	Diff line number	Diff line
		@@ -275,6 +275,20 @@ struct usb_ep * __init usb_ep_autoconfig (
		ep = find_ep (gadget, "ep1-bulk");
		if (ep && ep_matches (gadget, ep, desc))
		return ep;

		#ifdef CONFIG_BLACKFIN
		} else if (gadget_is_musbhsfc(gadget) \|\| gadget_is_musbhdrc(gadget)) {
		if ((USB_ENDPOINT_XFER_BULK == type) \|\|
		(USB_ENDPOINT_XFER_ISOC == type)) {
		if (USB_DIR_IN & desc->bEndpointAddress)
		ep = find_ep (gadget, "ep5in");
		else
		ep = find_ep (gadget, "ep6out");
		} else
		ep = NULL;
		if (ep && ep_matches (gadget, ep, desc))
		return ep;
		#endif
		}

		/* Second, look at endpoints until an unclaimed one looks usable */

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