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Commit 729b0c79 authored by Guennadi Liakhovetski's avatar Guennadi Liakhovetski Committed by Chris Ball
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mmc: tmio_mmc: allow multi-element scatter-gather lists 



The driver is capable of handling multi-element sg lists in both PIO and
DMA modes. In DMA mode this also allows to use the DMA sg capability more
efficiently and almost doubles the throughput.

Signed-off-by: default avatarGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: default avatarChris Ball <cjb@laptop.org>
parent 1a2727e9

drivers/mmc/host/tmio_mmc.c

+7 −2
Original line number Diff line number Diff line
@@ -864,10 +864,15 @@ static int __devinit tmio_mmc_probe(struct platform_device *dev) 
		goto host_free;



	mmc->ops = &tmio_mmc_ops;

	mmc->caps = MMC_CAP_4_BIT_DATA;

	mmc->caps |= pdata->capabilities;

	mmc->caps = MMC_CAP_4_BIT_DATA | pdata->capabilities;

	mmc->f_max = pdata->hclk;

	mmc->f_min = mmc->f_max / 512;

	mmc->max_segs = 32;

	mmc->max_blk_size = 512;

	mmc->max_blk_count = (PAGE_CACHE_SIZE / mmc->max_blk_size) *

		mmc->max_segs;

	mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;

	mmc->max_seg_size = mmc->max_req_size;

	if (pdata->ocr_mask)

		mmc->ocr_avail = pdata->ocr_mask;

	else