mmc: omap_hsmmc: add support for pre_req and post_req

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pre_req() runs dma_map_sg(), post_req() runs dma_unmap_sg.  If not calling
pre_req() before omap_hsmmc_request(), dma_map_sg will be issued before
starting the transfer.  It is optional to use pre_req().  If issuing
pre_req(), post_req() must be called as well.

Signed-off-by: Per Forlin <per.forlin@linaro.org>
Reviewed-by: Venkatraman S <svenkatr@ti.com>
Tested-by: Sourav Poddar <sourav.poddar@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

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Per Forlin 2011-07-01 18:55:23 +02:00 • committed by Chris Ball

parent aa8b683a7d

commit 9782aff8df

1 changed files with 83 additions and 4 deletions

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drivers/mmc/host/omap_hsmmc.c

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