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path: root/drivers/usb/musb/musb_host.c
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Diffstat (limited to 'drivers/usb/musb/musb_host.c')
-rw-r--r--drivers/usb/musb/musb_host.c157
1 files changed, 70 insertions, 87 deletions
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index 5eef4a8847db..7295e316bdfc 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -106,6 +106,7 @@ static void musb_ep_program(struct musb *musb, u8 epnum,
*/
static void musb_h_tx_flush_fifo(struct musb_hw_ep *ep)
{
+ struct musb *musb = ep->musb;
void __iomem *epio = ep->regs;
u16 csr;
u16 lastcsr = 0;
@@ -114,7 +115,7 @@ static void musb_h_tx_flush_fifo(struct musb_hw_ep *ep)
csr = musb_readw(epio, MUSB_TXCSR);
while (csr & MUSB_TXCSR_FIFONOTEMPTY) {
if (csr != lastcsr)
- DBG(3, "Host TX FIFONOTEMPTY csr: %02x\n", csr);
+ dev_dbg(musb->controller, "Host TX FIFONOTEMPTY csr: %02x\n", csr);
lastcsr = csr;
csr |= MUSB_TXCSR_FLUSHFIFO;
musb_writew(epio, MUSB_TXCSR, csr);
@@ -240,7 +241,7 @@ musb_start_urb(struct musb *musb, int is_in, struct musb_qh *qh)
len = urb->transfer_buffer_length - urb->actual_length;
}
- DBG(4, "qh %p urb %p dev%d ep%d%s%s, hw_ep %d, %p/%d\n",
+ dev_dbg(musb->controller, "qh %p urb %p dev%d ep%d%s%s, hw_ep %d, %p/%d\n",
qh, urb, address, qh->epnum,
is_in ? "in" : "out",
({char *s; switch (qh->type) {
@@ -263,7 +264,7 @@ musb_start_urb(struct musb *musb, int is_in, struct musb_qh *qh)
switch (qh->type) {
case USB_ENDPOINT_XFER_ISOC:
case USB_ENDPOINT_XFER_INT:
- DBG(3, "check whether there's still time for periodic Tx\n");
+ dev_dbg(musb->controller, "check whether there's still time for periodic Tx\n");
frame = musb_readw(mbase, MUSB_FRAME);
/* FIXME this doesn't implement that scheduling policy ...
* or handle framecounter wrapping
@@ -278,7 +279,7 @@ musb_start_urb(struct musb *musb, int is_in, struct musb_qh *qh)
} else {
qh->frame = urb->start_frame;
/* enable SOF interrupt so we can count down */
- DBG(1, "SOF for %d\n", epnum);
+ dev_dbg(musb->controller, "SOF for %d\n", epnum);
#if 1 /* ifndef CONFIG_ARCH_DAVINCI */
musb_writeb(mbase, MUSB_INTRUSBE, 0xff);
#endif
@@ -286,7 +287,7 @@ musb_start_urb(struct musb *musb, int is_in, struct musb_qh *qh)
break;
default:
start:
- DBG(4, "Start TX%d %s\n", epnum,
+ dev_dbg(musb->controller, "Start TX%d %s\n", epnum,
hw_ep->tx_channel ? "dma" : "pio");
if (!hw_ep->tx_channel)
@@ -301,21 +302,7 @@ static void musb_giveback(struct musb *musb, struct urb *urb, int status)
__releases(musb->lock)
__acquires(musb->lock)
{
- DBG(({ int level; switch (status) {
- case 0:
- level = 4;
- break;
- /* common/boring faults */
- case -EREMOTEIO:
- case -ESHUTDOWN:
- case -ECONNRESET:
- case -EPIPE:
- level = 3;
- break;
- default:
- level = 2;
- break;
- }; level; }),
+ dev_dbg(musb->controller,
"complete %p %pF (%d), dev%d ep%d%s, %d/%d\n",
urb, urb->complete, status,
usb_pipedevice(urb->pipe),
@@ -426,7 +413,7 @@ static void musb_advance_schedule(struct musb *musb, struct urb *urb,
}
if (qh != NULL && qh->is_ready) {
- DBG(4, "... next ep%d %cX urb %p\n",
+ dev_dbg(musb->controller, "... next ep%d %cX urb %p\n",
hw_ep->epnum, is_in ? 'R' : 'T', next_urb(qh));
musb_start_urb(musb, is_in, qh);
}
@@ -471,7 +458,7 @@ musb_host_packet_rx(struct musb *musb, struct urb *urb, u8 epnum, u8 iso_err)
/* musb_ep_select(mbase, epnum); */
rx_count = musb_readw(epio, MUSB_RXCOUNT);
- DBG(3, "RX%d count %d, buffer %p len %d/%d\n", epnum, rx_count,
+ dev_dbg(musb->controller, "RX%d count %d, buffer %p len %d/%d\n", epnum, rx_count,
urb->transfer_buffer, qh->offset,
urb->transfer_buffer_length);
@@ -493,7 +480,7 @@ musb_host_packet_rx(struct musb *musb, struct urb *urb, u8 epnum, u8 iso_err)
status = -EOVERFLOW;
urb->error_count++;
}
- DBG(2, "** OVERFLOW %d into %d\n", rx_count, length);
+ dev_dbg(musb->controller, "** OVERFLOW %d into %d\n", rx_count, length);
do_flush = 1;
} else
length = rx_count;
@@ -511,7 +498,7 @@ musb_host_packet_rx(struct musb *musb, struct urb *urb, u8 epnum, u8 iso_err)
if (rx_count > length) {
if (urb->status == -EINPROGRESS)
urb->status = -EOVERFLOW;
- DBG(2, "** OVERFLOW %d into %d\n", rx_count, length);
+ dev_dbg(musb->controller, "** OVERFLOW %d into %d\n", rx_count, length);
do_flush = 1;
} else
length = rx_count;
@@ -697,7 +684,7 @@ static void musb_ep_program(struct musb *musb, u8 epnum,
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 "
+ dev_dbg(musb->controller, "%s hw%d urb %p spd%d dev%d ep%d%s "
"h_addr%02x h_port%02x bytes %d\n",
is_out ? "-->" : "<--",
epnum, urb, urb->dev->speed,
@@ -850,37 +837,32 @@ static void musb_ep_program(struct musb *musb, u8 epnum,
/* kick things off */
if ((is_cppi_enabled() || tusb_dma_omap()) && dma_channel) {
- /* candidate for DMA */
- if (dma_channel) {
- dma_channel->actual_len = 0L;
- qh->segsize = len;
-
- /* AUTOREQ is in a DMA register */
- musb_writew(hw_ep->regs, MUSB_RXCSR, csr);
- csr = musb_readw(hw_ep->regs,
- MUSB_RXCSR);
-
- /* unless caller treats short rx transfers as
- * errors, we dare not queue multiple transfers.
- */
- dma_ok = dma_controller->channel_program(
- dma_channel, packet_sz,
- !(urb->transfer_flags
- & URB_SHORT_NOT_OK),
- urb->transfer_dma + offset,
- qh->segsize);
- if (!dma_ok) {
- dma_controller->channel_release(
- dma_channel);
- hw_ep->rx_channel = NULL;
- dma_channel = NULL;
- } else
- csr |= MUSB_RXCSR_DMAENAB;
- }
+ /* Candidate for DMA */
+ dma_channel->actual_len = 0L;
+ qh->segsize = len;
+
+ /* AUTOREQ is in a DMA register */
+ musb_writew(hw_ep->regs, MUSB_RXCSR, csr);
+ csr = musb_readw(hw_ep->regs, MUSB_RXCSR);
+
+ /*
+ * Unless caller treats short RX transfers as
+ * errors, we dare not queue multiple transfers.
+ */
+ dma_ok = dma_controller->channel_program(dma_channel,
+ packet_sz, !(urb->transfer_flags &
+ URB_SHORT_NOT_OK),
+ urb->transfer_dma + offset,
+ qh->segsize);
+ if (!dma_ok) {
+ dma_controller->channel_release(dma_channel);
+ hw_ep->rx_channel = dma_channel = NULL;
+ } else
+ csr |= MUSB_RXCSR_DMAENAB;
}
csr |= MUSB_RXCSR_H_REQPKT;
- DBG(7, "RXCSR%d := %04x\n", epnum, csr);
+ dev_dbg(musb->controller, "RXCSR%d := %04x\n", epnum, csr);
musb_writew(hw_ep->regs, MUSB_RXCSR, csr);
csr = musb_readw(hw_ep->regs, MUSB_RXCSR);
}
@@ -923,15 +905,15 @@ static bool musb_h_ep0_continue(struct musb *musb, u16 len, struct urb *urb)
request = (struct usb_ctrlrequest *) urb->setup_packet;
if (!request->wLength) {
- DBG(4, "start no-DATA\n");
+ dev_dbg(musb->controller, "start no-DATA\n");
break;
} else if (request->bRequestType & USB_DIR_IN) {
- DBG(4, "start IN-DATA\n");
+ dev_dbg(musb->controller, "start IN-DATA\n");
musb->ep0_stage = MUSB_EP0_IN;
more = true;
break;
} else {
- DBG(4, "start OUT-DATA\n");
+ dev_dbg(musb->controller, "start OUT-DATA\n");
musb->ep0_stage = MUSB_EP0_OUT;
more = true;
}
@@ -943,7 +925,7 @@ static bool musb_h_ep0_continue(struct musb *musb, u16 len, struct urb *urb)
if (fifo_count) {
fifo_dest = (u8 *) (urb->transfer_buffer
+ urb->actual_length);
- DBG(3, "Sending %d byte%s to ep0 fifo %p\n",
+ dev_dbg(musb->controller, "Sending %d byte%s to ep0 fifo %p\n",
fifo_count,
(fifo_count == 1) ? "" : "s",
fifo_dest);
@@ -988,7 +970,7 @@ irqreturn_t musb_h_ep0_irq(struct musb *musb)
? musb_readb(epio, MUSB_COUNT0)
: 0;
- DBG(4, "<== csr0 %04x, qh %p, count %d, urb %p, stage %d\n",
+ dev_dbg(musb->controller, "<== csr0 %04x, qh %p, count %d, urb %p, stage %d\n",
csr, qh, len, urb, musb->ep0_stage);
/* if we just did status stage, we are done */
@@ -999,15 +981,15 @@ irqreturn_t musb_h_ep0_irq(struct musb *musb)
/* prepare status */
if (csr & MUSB_CSR0_H_RXSTALL) {
- DBG(6, "STALLING ENDPOINT\n");
+ dev_dbg(musb->controller, "STALLING ENDPOINT\n");
status = -EPIPE;
} else if (csr & MUSB_CSR0_H_ERROR) {
- DBG(2, "no response, csr0 %04x\n", csr);
+ dev_dbg(musb->controller, "no response, csr0 %04x\n", csr);
status = -EPROTO;
} else if (csr & MUSB_CSR0_H_NAKTIMEOUT) {
- DBG(2, "control NAK timeout\n");
+ dev_dbg(musb->controller, "control NAK timeout\n");
/* NOTE: this code path would be a good place to PAUSE a
* control transfer, if another one is queued, so that
@@ -1022,7 +1004,7 @@ irqreturn_t musb_h_ep0_irq(struct musb *musb)
}
if (status) {
- DBG(6, "aborting\n");
+ dev_dbg(musb->controller, "aborting\n");
retval = IRQ_HANDLED;
if (urb)
urb->status = status;
@@ -1072,7 +1054,7 @@ irqreturn_t musb_h_ep0_irq(struct musb *musb)
/* flag status stage */
musb->ep0_stage = MUSB_EP0_STATUS;
- DBG(5, "ep0 STATUS, csr %04x\n", csr);
+ dev_dbg(musb->controller, "ep0 STATUS, csr %04x\n", csr);
}
musb_writew(epio, MUSB_CSR0, csr);
@@ -1126,31 +1108,31 @@ void musb_host_tx(struct musb *musb, u8 epnum)
/* with CPPI, DMA sometimes triggers "extra" irqs */
if (!urb) {
- DBG(4, "extra TX%d ready, csr %04x\n", epnum, tx_csr);
+ dev_dbg(musb->controller, "extra TX%d ready, csr %04x\n", epnum, tx_csr);
return;
}
pipe = urb->pipe;
dma = is_dma_capable() ? hw_ep->tx_channel : NULL;
- DBG(4, "OUT/TX%d end, csr %04x%s\n", epnum, tx_csr,
+ dev_dbg(musb->controller, "OUT/TX%d end, csr %04x%s\n", epnum, tx_csr,
dma ? ", dma" : "");
/* check for errors */
if (tx_csr & MUSB_TXCSR_H_RXSTALL) {
/* dma was disabled, fifo flushed */
- DBG(3, "TX end %d stall\n", epnum);
+ dev_dbg(musb->controller, "TX end %d stall\n", epnum);
/* stall; record URB status */
status = -EPIPE;
} else if (tx_csr & MUSB_TXCSR_H_ERROR) {
/* (NON-ISO) dma was disabled, fifo flushed */
- DBG(3, "TX 3strikes on ep=%d\n", epnum);
+ dev_dbg(musb->controller, "TX 3strikes on ep=%d\n", epnum);
status = -ETIMEDOUT;
} else if (tx_csr & MUSB_TXCSR_H_NAKTIMEOUT) {
- DBG(6, "TX end=%d device not responding\n", epnum);
+ dev_dbg(musb->controller, "TX end=%d device not responding\n", epnum);
/* NOTE: this code path would be a good place to PAUSE a
* transfer, if there's some other (nonperiodic) tx urb
@@ -1195,7 +1177,7 @@ void musb_host_tx(struct musb *musb, u8 epnum)
/* second cppi case */
if (dma_channel_status(dma) == MUSB_DMA_STATUS_BUSY) {
- DBG(4, "extra TX%d ready, csr %04x\n", epnum, tx_csr);
+ dev_dbg(musb->controller, "extra TX%d ready, csr %04x\n", epnum, tx_csr);
return;
}
@@ -1254,7 +1236,7 @@ void musb_host_tx(struct musb *musb, u8 epnum)
* FIFO mode too...
*/
if (tx_csr & (MUSB_TXCSR_FIFONOTEMPTY | MUSB_TXCSR_TXPKTRDY)) {
- DBG(2, "DMA complete but packet still in FIFO, "
+ dev_dbg(musb->controller, "DMA complete but packet still in FIFO, "
"CSR %04x\n", tx_csr);
return;
}
@@ -1321,7 +1303,7 @@ void musb_host_tx(struct musb *musb, u8 epnum)
return;
}
} else if (tx_csr & MUSB_TXCSR_DMAENAB) {
- DBG(1, "not complete, but DMA enabled?\n");
+ dev_dbg(musb->controller, "not complete, but DMA enabled?\n");
return;
}
@@ -1462,7 +1444,7 @@ void musb_host_rx(struct musb *musb, u8 epnum)
* usbtest #11 (unlinks) triggers it regularly, sometimes
* with fifo full. (Only with DMA??)
*/
- DBG(3, "BOGUS RX%d ready, csr %04x, count %d\n", epnum, val,
+ dev_dbg(musb->controller, "BOGUS RX%d ready, csr %04x, count %d\n", epnum, val,
musb_readw(epio, MUSB_RXCOUNT));
musb_h_flush_rxfifo(hw_ep, MUSB_RXCSR_CLRDATATOG);
return;
@@ -1470,20 +1452,20 @@ void musb_host_rx(struct musb *musb, u8 epnum)
pipe = urb->pipe;
- DBG(5, "<== hw %d rxcsr %04x, urb actual %d (+dma %zu)\n",
+ dev_dbg(musb->controller, "<== hw %d rxcsr %04x, urb actual %d (+dma %zu)\n",
epnum, rx_csr, urb->actual_length,
dma ? dma->actual_len : 0);
/* check for errors, concurrent stall & unlink is not really
* handled yet! */
if (rx_csr & MUSB_RXCSR_H_RXSTALL) {
- DBG(3, "RX end %d STALL\n", epnum);
+ dev_dbg(musb->controller, "RX end %d STALL\n", epnum);
/* stall; record URB status */
status = -EPIPE;
} else if (rx_csr & MUSB_RXCSR_H_ERROR) {
- DBG(3, "end %d RX proto error\n", epnum);
+ dev_dbg(musb->controller, "end %d RX proto error\n", epnum);
status = -EPROTO;
musb_writeb(epio, MUSB_RXINTERVAL, 0);
@@ -1491,7 +1473,7 @@ void musb_host_rx(struct musb *musb, u8 epnum)
} else if (rx_csr & MUSB_RXCSR_DATAERROR) {
if (USB_ENDPOINT_XFER_ISOC != qh->type) {
- DBG(6, "RX end %d NAK timeout\n", epnum);
+ dev_dbg(musb->controller, "RX end %d NAK timeout\n", epnum);
/* NOTE: NAKing is *NOT* an error, so we want to
* continue. Except ... if there's a request for
@@ -1514,12 +1496,12 @@ void musb_host_rx(struct musb *musb, u8 epnum)
goto finish;
} else {
- DBG(4, "RX end %d ISO data error\n", epnum);
+ dev_dbg(musb->controller, "RX end %d ISO data error\n", epnum);
/* packet error reported later */
iso_err = true;
}
} else if (rx_csr & MUSB_RXCSR_INCOMPRX) {
- DBG(3, "end %d high bandwidth incomplete ISO packet RX\n",
+ dev_dbg(musb->controller, "end %d high bandwidth incomplete ISO packet RX\n",
epnum);
status = -EPROTO;
}
@@ -1565,7 +1547,7 @@ void musb_host_rx(struct musb *musb, u8 epnum)
done = true;
}
- DBG(2, "RXCSR%d %04x, reqpkt, len %zu%s\n", epnum, rx_csr,
+ dev_dbg(musb->controller, "RXCSR%d %04x, reqpkt, len %zu%s\n", epnum, rx_csr,
xfer_len, dma ? ", dma" : "");
rx_csr &= ~MUSB_RXCSR_H_REQPKT;
@@ -1615,7 +1597,7 @@ void musb_host_rx(struct musb *musb, u8 epnum)
MUSB_RXCSR_H_WZC_BITS | val);
}
- DBG(4, "ep %d dma %s, rxcsr %04x, rxcount %d\n", epnum,
+ dev_dbg(musb->controller, "ep %d dma %s, rxcsr %04x, rxcount %d\n", epnum,
done ? "off" : "reset",
musb_readw(epio, MUSB_RXCSR),
musb_readw(epio, MUSB_RXCOUNT));
@@ -1648,7 +1630,7 @@ void musb_host_rx(struct musb *musb, u8 epnum)
rx_count = musb_readw(epio, MUSB_RXCOUNT);
- DBG(2, "RX%d count %d, buffer 0x%x len %d/%d\n",
+ dev_dbg(musb->controller, "RX%d count %d, buffer 0x%x len %d/%d\n",
epnum, rx_count,
urb->transfer_dma
+ urb->actual_length,
@@ -1672,7 +1654,7 @@ void musb_host_rx(struct musb *musb, u8 epnum)
d_status = -EOVERFLOW;
urb->error_count++;
}
- DBG(2, "** OVERFLOW %d into %d\n",\
+ dev_dbg(musb->controller, "** OVERFLOW %d into %d\n",\
rx_count, d->length);
length = d->length;
@@ -1760,7 +1742,7 @@ void musb_host_rx(struct musb *musb, u8 epnum)
usb_hcd_unmap_urb_for_dma(musb_to_hcd(musb), urb);
done = musb_host_packet_rx(musb, urb,
epnum, iso_err);
- DBG(6, "read %spacket\n", done ? "last " : "");
+ dev_dbg(musb->controller, "read %spacket\n", done ? "last " : "");
}
}
@@ -1881,7 +1863,7 @@ static int musb_schedule(
idle = 1;
qh->mux = 0;
hw_ep = musb->endpoints + best_end;
- DBG(4, "qh %p periodic slot %d\n", qh, best_end);
+ dev_dbg(musb->controller, "qh %p periodic slot %d\n", qh, best_end);
success:
if (head) {
idle = list_empty(head);
@@ -2087,6 +2069,7 @@ done:
static int musb_cleanup_urb(struct urb *urb, struct musb_qh *qh)
{
struct musb_hw_ep *ep = qh->hw_ep;
+ struct musb *musb = ep->musb;
void __iomem *epio = ep->regs;
unsigned hw_end = ep->epnum;
void __iomem *regs = ep->musb->mregs;
@@ -2102,7 +2085,7 @@ static int musb_cleanup_urb(struct urb *urb, struct musb_qh *qh)
dma = is_in ? ep->rx_channel : ep->tx_channel;
if (dma) {
status = ep->musb->dma_controller->channel_abort(dma);
- DBG(status ? 1 : 3,
+ dev_dbg(musb->controller,
"abort %cX%d DMA for urb %p --> %d\n",
is_in ? 'R' : 'T', ep->epnum,
urb, status);
@@ -2149,7 +2132,7 @@ static int musb_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
int is_in = usb_pipein(urb->pipe);
int ret;
- DBG(4, "urb=%p, dev%d ep%d%s\n", urb,
+ dev_dbg(musb->controller, "urb=%p, dev%d ep%d%s\n", urb,
usb_pipedevice(urb->pipe),
usb_pipeendpoint(urb->pipe),
is_in ? "in" : "out");
@@ -2304,7 +2287,7 @@ static int musb_bus_suspend(struct usb_hcd *hcd)
if (musb->is_active) {
WARNING("trying to suspend as %s while active\n",
- otg_state_string(musb));
+ otg_state_string(musb->xceiv->state));
return -EBUSY;
} else
return 0;
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-11 22:10:42 +0000