usb: renesas_usbhs: divide data transfer functions

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DMAEngine will be supported to this driver in the future.
Then, both PIO and DMA data transfer method should be supported.
But, the transfer function can returns the result immediately
in PIO version, but it can't in DMA version.
This patch divides data transfer functions into top/bottom half
in preparation for DMAEngine support.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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This commit is contained in:

Kuninori Morimoto 2011-06-06 14:18:07 +09:00 • committed by Greg Kroah-Hartman

parent e8d548d549

commit 4bd0481152

6 changed files with 150 additions and 60 deletions

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1

drivers/usb/renesas_usbhs/common.h

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57

drivers/usb/renesas_usbhs/fifo.c

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21

drivers/usb/renesas_usbhs/fifo.h

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117

drivers/usb/renesas_usbhs/mod_gadget.c

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8

drivers/usb/renesas_usbhs/pipe.c

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8

drivers/usb/renesas_usbhs/pipe.h

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