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staging: octeon-usb: program DMA engine based on transfer direction 

Program DMA engine based on transfer direction. We are only transferring
to one direction at a time.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Aaro Koskinen 2015-03-22 17:37:51 +02:00 committed by Greg Kroah-Hartman
parent af8e4c71f6
commit d712648a22
1 changed files with 7 additions and 7 deletions
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14
drivers/staging/octeon-usb/octeon-hcd.c
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@ -1636,8 +1636,9 @@ static void cvmx_usb_start_channel(struct cvmx_usb_state *usb, int channel,
usbc_haintmsk.u32);
}
/* Setup the locations the DMA engines use */
/* Setup the location the DMA engine uses. */
{
uint64_t reg;
uint64_t dma_address = transaction->buffer +
transaction->actual_bytes;
@ -1646,12 +1647,11 @@ static void cvmx_usb_start_channel(struct cvmx_usb_state *usb, int channel,
transaction->iso_packets[0].offset +
transaction->actual_bytes;
cvmx_write64_uint64(CVMX_USBNX_DMA0_OUTB_CHN0(usb->index) +
channel * 8,
dma_address);
cvmx_write64_uint64(CVMX_USBNX_DMA0_INB_CHN0(usb->index) +
channel * 8,
dma_address);
if (pipe->transfer_dir == CVMX_USB_DIRECTION_OUT)
reg = CVMX_USBNX_DMA0_OUTB_CHN0(usb->index);
else
reg = CVMX_USBNX_DMA0_INB_CHN0(usb->index);
cvmx_write64_uint64(reg + channel * 8, dma_address);
}
/* Setup both the size of the transfer and the SPLIT characteristics */