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Commit d712648a authored by Aaro Koskinen's avatar Aaro Koskinen Committed by Greg Kroah-Hartman
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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: default avatarAaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent af8e4c71

drivers/staging/octeon-usb/octeon-hcd.c

+7 −7
Original line number Diff line number Diff line
@@ -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 */