From: Guennadi Liakhovetski Date: Thu, 11 Nov 2010 11:15:06 +0000 (+0100) Subject: mmc: tmio_mmc: allow multi-element scatter-gather lists X-Git-Tag: v2.6.38-rc1~418^2~11 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=729b0c79c2c0f631bffe1be5abaf291febf7792f;p=profile%2Fivi%2Fkernel-adaptation-intel-automotive.git 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: Guennadi Liakhovetski Signed-off-by: Chris Ball --- diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c index e7765a8..4e75799 100644 --- a/drivers/mmc/host/tmio_mmc.c +++ b/drivers/mmc/host/tmio_mmc.c @@ -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