dect
/
linux-2.6
Archived
13
0
Fork 0
Code Releases Activity

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>
This commit is contained in:
Bryan Wu 2009-12-21 10:43:06 -05:00 committed by Greg Kroah-Hartman
parent ca0e9485af
commit 3a8a3b1cee
1 changed files with 14 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/usb/gadget/epautoconf.c
View File

@ -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 */