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USB: ci13xxx_udc: Set QMULT for ISO endpoints

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Currently not setting QMULT for ISO endpoints. Set this
value appropriately  to indicate to the USB controller the
number of transactions to be done in microframe.

Change-Id: If80c003464024f8dfebcda13fefb33744618d043
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>

b/6968587
This commit is contained in:
Ajay Dudani
2012-09-13 20:05:25 +05:30
committed by Iliyan Malchev
parent 64e994d018
commit d4e24fdbb1
2 changed files with 9 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/usb/gadget/ci13xxx_udc.c
View File

@@ -2561,6 +2561,7 @@ 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;
unsigned mult = 0;
trace("%p, %p", ep, desc);
@@ -2586,12 +2587,15 @@ static int ep_enable(struct usb_ep *ep,
mEp->qh.ptr->cap = 0;
if (mEp->type == USB_ENDPOINT_XFER_CONTROL)
if (mEp->type == USB_ENDPOINT_XFER_CONTROL) {
mEp->qh.ptr->cap |= QH_IOS;
else if (mEp->type == USB_ENDPOINT_XFER_ISOC)
} else if (mEp->type == USB_ENDPOINT_XFER_ISOC) {
mEp->qh.ptr->cap &= ~QH_MULT;
else
mEp->qh.ptr->cap &= ~QH_ZLT;
mult = ((mEp->ep.maxpacket >> QH_MULT_SHIFT) + 1) & 0x03;
mEp->qh.ptr->cap |= (mult << ffs_nr(QH_MULT));
} else {
mEp->qh.ptr->cap |= QH_ZLT;
}
mEp->qh.ptr->cap |=
(mEp->ep.maxpacket << ffs_nr(QH_MAX_PKT)) & QH_MAX_PKT;

1
drivers/usb/gadget/ci13xxx_udc.h
View File

@@ -67,6 +67,7 @@ struct ci13xxx_qh {
#define QH_MAX_PKT (0x07FFUL << 16)
#define QH_ZLT BIT(29)
#define QH_MULT (0x0003UL << 30)
#define QH_MULT_SHIFT 11
/* 1 */
u32 curr;
/* 2 - 8 */