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| author | David S. Miller <davem@davemloft.net> | 2010-03-15 23:23:54 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-03-15 23:23:54 (GMT) |
| commit | 4961e02f1999e1c3468c09b2669c94d7c3ae82a8 (patch) | |
| tree | 44c15abb09d7ba5e17a9aba95ee246648b1c1a8a /drivers/usb/musb/musb_host.c | |
| parent | d14a0ebda7d3daede1a99c01527affb9ceaa4c22 (diff) | |
| parent | a3d3203e4bb40f253b1541e310dc0f9305be7c84 (diff) | |
| download | linux-fsl-qoriq-4961e02f1999e1c3468c09b2669c94d7c3ae82a8.tar.xz | |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Diffstat (limited to 'drivers/usb/musb/musb_host.c')
| -rw-r--r-- | drivers/usb/musb/musb_host.c | 34 |
1 files changed, 32 insertions, 2 deletions
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index 74c4c36..3421cf9 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -605,8 +605,14 @@ musb_rx_reinit(struct musb *musb, struct musb_qh *qh, struct musb_hw_ep *ep) musb_writeb(ep->regs, MUSB_RXTYPE, qh->type_reg); musb_writeb(ep->regs, MUSB_RXINTERVAL, qh->intv_reg); /* NOTE: bulk combining rewrites high bits of maxpacket */ - musb_writew(ep->regs, MUSB_RXMAXP, - qh->maxpacket | ((qh->hb_mult - 1) << 11)); + /* Set RXMAXP with the FIFO size of the endpoint + * to disable double buffer mode. + */ + if (musb->hwvers < MUSB_HWVERS_2000) + musb_writew(ep->regs, MUSB_RXMAXP, ep->max_packet_sz_rx); + else + musb_writew(ep->regs, MUSB_RXMAXP, + qh->maxpacket | ((qh->hb_mult - 1) << 11)); ep->rx_reinit = 0; } @@ -1771,6 +1777,9 @@ static int musb_schedule( int best_end, epnum; struct musb_hw_ep *hw_ep = NULL; struct list_head *head = NULL; + u8 toggle; + u8 txtype; + struct urb *urb = next_urb(qh); /* use fixed hardware for control and bulk */ if (qh->type == USB_ENDPOINT_XFER_CONTROL) { @@ -1809,6 +1818,27 @@ static int musb_schedule( diff -= (qh->maxpacket * qh->hb_mult); if (diff >= 0 && best_diff > diff) { + + /* + * Mentor controller has a bug in that if we schedule + * a BULK Tx transfer on an endpoint that had earlier + * handled ISOC then the BULK transfer has to start on + * a zero toggle. If the BULK transfer starts on a 1 + * toggle then this transfer will fail as the mentor + * controller starts the Bulk transfer on a 0 toggle + * irrespective of the programming of the toggle bits + * in the TXCSR register. Check for this condition + * while allocating the EP for a Tx Bulk transfer. If + * so skip this EP. + */ + hw_ep = musb->endpoints + epnum; + toggle = usb_gettoggle(urb->dev, qh->epnum, !is_in); + txtype = (musb_readb(hw_ep->regs, MUSB_TXTYPE) + >> 4) & 0x3; + if (!is_in && (qh->type == USB_ENDPOINT_XFER_BULK) && + toggle && (txtype == USB_ENDPOINT_XFER_ISOC)) + continue; + best_diff = diff; best_end = epnum; } |