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usb: chipidea: udc: rework ep_enable cap setting

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This patch reworks the cap value from several read
and write operations to one single operation.

Signed-off-by: Michael Grzeschik <[email protected]>
Reviewed-by: Felipe Balbi <[email protected]>
[Alex: removed useless isoc-related bit of code]
Signed-off-by: Alexander Shishkin <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Michael Grzeschik 2013-03-30 12:54:05 +02:00 • committed by Greg Kroah-Hartman
commit 1cd12a9cf0
1 changed files with 5 additions and 9 deletions
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14
drivers/usb/chipidea/udc.c
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@ -986,6 +986,7 @@ static int ep_enable(struct usb_ep *ep,
struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
int retval = 0;
unsigned long flags;
u32 cap = 0;
if (ep == NULL || desc == NULL)
return -EINVAL;
@ -1005,17 +1006,12 @@ static int ep_enable(struct usb_ep *ep,
mEp->ep.maxpacket = usb_endpoint_maxp(desc);
mEp->qh.ptr->cap = 0;
if (mEp->type == USB_ENDPOINT_XFER_CONTROL)
mEp->qh.ptr->cap |= cpu_to_le32(QH_IOS);
else if (mEp->type == USB_ENDPOINT_XFER_ISOC)
mEp->qh.ptr->cap &= cpu_to_le32(~QH_MULT);
else
mEp->qh.ptr->cap &= cpu_to_le32(~QH_ZLT);
cap |= QH_IOS;
cap |= (mEp->ep.maxpacket << __ffs(QH_MAX_PKT)) & QH_MAX_PKT;
mEp->qh.ptr->cap = cpu_to_le32(cap);
mEp->qh.ptr->cap |= cpu_to_le32((mEp->ep.maxpacket << __ffs(QH_MAX_PKT))
& QH_MAX_PKT);
mEp->qh.ptr->td.next |= cpu_to_le32(TD_TERMINATE); /* needed? */
/*