diff options
| author | Bryan Wu <cooloney@kernel.org> | 2009-12-21 10:43:06 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-03-02 14:53:28 -0800 |
| commit | 3a8a3b1cee6c525661732b8bcf29ac63d42945ed (patch) | |
| tree | 0d35ecc39dbd9b879b61d6b49bc5f2085b55c564 /drivers/usb/gadget | |
| parent | ca0e9485afb8db3abf58235abf6afded2df0db17 (diff) | |
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>
Diffstat (limited to 'drivers/usb/gadget')
| -rw-r--r-- | drivers/usb/gadget/epautoconf.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/usb/gadget/epautoconf.c b/drivers/usb/gadget/epautoconf.c index cd0914ec898e..4671d5d7973d 100644 --- a/drivers/usb/gadget/epautoconf.c +++ b/drivers/usb/gadget/epautoconf.c @@ -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 */ |