diff options
| author | Michael Grzeschik <mgr@pengutronix.de> | 2013-06-13 17:59:47 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-06-17 13:45:46 -0700 |
| commit | e4ce4ecd962e17a92974b3c7ba063d29fce8c86f (patch) | |
| tree | 2671f6d09147c13d91eab6aff1717153037dbc18 /drivers/usb/chipidea/udc.c | |
| parent | f6a57507f685bb24b83893a12e65623a2fc69489 (diff) | |
usb: chipidea: udc: configure iso endpoints
This patch adds iso endpoint support to the device controller.
It makes use of the multiplication bits in the maxpacket field
of the endpoint and calculates the multiplier bits for each
transfer description on every request.
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Reviewed-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/chipidea/udc.c')
| -rw-r--r-- | drivers/usb/chipidea/udc.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index b501346484ae..8aed28855c04 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -466,6 +466,14 @@ static int _hardware_enqueue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq) mEp->qh.ptr->td.token &= cpu_to_le32(~(TD_STATUS_HALTED|TD_STATUS_ACTIVE)); + if (mEp->type == USB_ENDPOINT_XFER_ISOC) { + u32 mul = mReq->req.length / mEp->ep.maxpacket; + + if (mReq->req.length % mEp->ep.maxpacket) + mul++; + mEp->qh.ptr->cap |= mul << __ffs(QH_MULT); + } + wmb(); /* synchronize before ep prime */ ret = hw_ep_prime(ci, mEp->num, mEp->dir, @@ -678,6 +686,12 @@ static int _ep_queue(struct usb_ep *ep, struct usb_request *req, } } + if (usb_endpoint_xfer_isoc(mEp->ep.desc) && + mReq->req.length > (1 + mEp->ep.mult) * mEp->ep.maxpacket) { + dev_err(mEp->ci->dev, "request length too big for isochronous\n"); + return -EMSGSIZE; + } + /* first nuke then test link, e.g. previous status has not sent */ if (!list_empty(&mReq->queue)) { dev_err(mEp->ci->dev, "request already in queue\n"); @@ -1060,7 +1074,8 @@ static int ep_enable(struct usb_ep *ep, mEp->num = usb_endpoint_num(desc); mEp->type = usb_endpoint_type(desc); - mEp->ep.maxpacket = usb_endpoint_maxp(desc); + mEp->ep.maxpacket = usb_endpoint_maxp(desc) & 0x07ff; + mEp->ep.mult = QH_ISO_MULT(usb_endpoint_maxp(desc)); if (mEp->type == USB_ENDPOINT_XFER_CONTROL) cap |= QH_IOS; @@ -1246,6 +1261,9 @@ static int ep_set_halt(struct usb_ep *ep, int value) if (ep == NULL || mEp->ep.desc == NULL) return -EINVAL; + if (usb_endpoint_xfer_isoc(mEp->ep.desc)) + return -EOPNOTSUPP; + spin_lock_irqsave(mEp->lock, flags); #ifndef STALL_IN |