diff options
Diffstat (limited to 'drivers/usb/musb/musb_host.c')
| -rw-r--r-- | drivers/usb/musb/musb_host.c | 56 |
1 files changed, 22 insertions, 34 deletions
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index bf194d244533..17d14f26bd6c 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -181,6 +181,19 @@ static inline void musb_h_tx_dma_start(struct musb_hw_ep *ep) musb_writew(ep->regs, MUSB_TXCSR, txcsr); } +static void musb_ep_set_qh(struct musb_hw_ep *ep, int is_in, struct musb_qh *qh) +{ + if (is_in != 0 || ep->is_shared_fifo) + ep->in_qh = qh; + if (is_in == 0 || ep->is_shared_fifo) + ep->out_qh = qh; +} + +static struct musb_qh *musb_ep_get_qh(struct musb_hw_ep *ep, int is_in) +{ + return is_in ? ep->in_qh : ep->out_qh; +} + /* * Start the URB at the front of an endpoint's queue * end must be claimed from the caller. @@ -210,7 +223,6 @@ musb_start_urb(struct musb *musb, int is_in, struct musb_qh *qh) case USB_ENDPOINT_XFER_CONTROL: /* control transfers always start with SETUP */ is_in = 0; - hw_ep->out_qh = qh; musb->ep0_stage = MUSB_EP0_START; buf = urb->setup_packet; len = 8; @@ -239,10 +251,7 @@ musb_start_urb(struct musb *musb, int is_in, struct musb_qh *qh) epnum, buf + offset, len); /* Configure endpoint */ - if (is_in || hw_ep->is_shared_fifo) - hw_ep->in_qh = qh; - else - hw_ep->out_qh = qh; + musb_ep_set_qh(hw_ep, is_in, qh); musb_ep_program(musb, epnum, urb, !is_in, buf, offset, len); /* transmit may have more work: start it when it is time */ @@ -377,11 +386,8 @@ musb_giveback(struct musb_qh *qh, struct urb *urb, int status) else ep->tx_reinit = 1; - /* clobber old pointers to this qh */ - if (is_in || ep->is_shared_fifo) - ep->in_qh = NULL; - else - ep->out_qh = NULL; + /* Clobber old pointers to this qh */ + musb_ep_set_qh(ep, is_in, NULL); qh->hep->hcpriv = NULL; switch (qh->type) { @@ -424,12 +430,7 @@ static void musb_advance_schedule(struct musb *musb, struct urb *urb, struct musb_hw_ep *hw_ep, int is_in) { - struct musb_qh *qh; - - if (is_in || hw_ep->is_shared_fifo) - qh = hw_ep->in_qh; - else - qh = hw_ep->out_qh; + struct musb_qh *qh = musb_ep_get_qh(hw_ep, is_in); if (urb->status == -EINPROGRESS) qh = musb_giveback(qh, urb, 0); @@ -692,15 +693,8 @@ static void musb_ep_program(struct musb *musb, u8 epnum, void __iomem *mbase = musb->mregs; struct musb_hw_ep *hw_ep = musb->endpoints + epnum; void __iomem *epio = hw_ep->regs; - struct musb_qh *qh; - u16 packet_sz; - - if (!is_out || hw_ep->is_shared_fifo) - qh = hw_ep->in_qh; - else - qh = hw_ep->out_qh; - - packet_sz = qh->maxpacket; + struct musb_qh *qh = musb_ep_get_qh(hw_ep, !is_out); + u16 packet_sz = qh->maxpacket; DBG(3, "%s hw%d urb %p spd%d dev%d ep%d%s " "h_addr%02x h_port%02x bytes %d\n", @@ -1118,17 +1112,14 @@ void musb_host_tx(struct musb *musb, u8 epnum) u16 tx_csr; size_t length = 0; size_t offset = 0; - struct urb *urb; struct musb_hw_ep *hw_ep = musb->endpoints + epnum; void __iomem *epio = hw_ep->regs; - struct musb_qh *qh = hw_ep->is_shared_fifo ? hw_ep->in_qh - : hw_ep->out_qh; + struct musb_qh *qh = hw_ep->out_qh; + struct urb *urb = next_urb(qh); u32 status = 0; void __iomem *mbase = musb->mregs; struct dma_channel *dma; - urb = next_urb(qh); - musb_ep_select(mbase, epnum); tx_csr = musb_readw(epio, MUSB_TXCSR); @@ -1806,10 +1797,7 @@ static int musb_schedule( epnum++, hw_ep++) { int diff; - if (is_in || hw_ep->is_shared_fifo) { - if (hw_ep->in_qh != NULL) - continue; - } else if (hw_ep->out_qh != NULL) + if (musb_ep_get_qh(hw_ep, is_in) != NULL) continue; if (hw_ep == musb->bulk_ep) |