Program DMA engine based on transfer direction. We are only transferring
to one direction at a time.
Signed-off-by: Aaro Koskinen <aaro.koski...@iki.fi>
---
drivers/staging/octeon-usb/octeon-hcd.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/drivers/staging/octeon-usb/octeon-hcd.c
b/drivers/staging/octeon-usb/octeon-hcd.c
index b6d3a33..ce96b20 100644
--- a/drivers/staging/octeon-usb/octeon-hcd.c
+++ b/drivers/staging/octeon-usb/octeon-hcd.c
@@ -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 */
--
2.2.0
_______________________________________________
devel mailing list
de...@linuxdriverproject.org
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
