From patchwork Mon Jun 6 07:30:14 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shawn Guo X-Patchwork-Id: 1754 Return-Path: Delivered-To: unknown Received: from imap.gmail.com (74.125.159.109) by localhost6.localdomain6 with IMAP4-SSL; 08 Jun 2011 14:55:24 -0000 Delivered-To: patches@linaro.org Received: by 10.52.181.10 with SMTP id ds10cs14891vdc; Mon, 6 Jun 2011 00:23:03 -0700 (PDT) Received: by 10.42.250.66 with SMTP id mn2mr8250871icb.82.1307344982608; Mon, 06 Jun 2011 00:23:02 -0700 (PDT) Received: from mail-pw0-f50.google.com (mail-pw0-f50.google.com [209.85.160.50]) by mx.google.com with ESMTPS id l2si27788533ict.144.2011.06.06.00.23.02 (version=TLSv1/SSLv3 cipher=OTHER); Mon, 06 Jun 2011 00:23:02 -0700 (PDT) Received-SPF: neutral (google.com: 209.85.160.50 is neither permitted nor denied by best guess record for domain of shawn.guo@linaro.org) client-ip=209.85.160.50; Authentication-Results: mx.google.com; spf=neutral (google.com: 209.85.160.50 is neither permitted nor denied by best guess record for domain of shawn.guo@linaro.org) smtp.mail=shawn.guo@linaro.org Received: by pwi3 with SMTP id 3so2199805pwi.37 for ; Mon, 06 Jun 2011 00:23:01 -0700 (PDT) Received: by 10.68.32.232 with SMTP id m8mr1529721pbi.99.1307344981768; Mon, 06 Jun 2011 00:23:01 -0700 (PDT) Received: from localhost.localdomain ([114.216.154.92]) by mx.google.com with ESMTPS id w2sm3488934pbg.37.2011.06.06.00.22.40 (version=TLSv1/SSLv3 cipher=OTHER); Mon, 06 Jun 2011 00:23:01 -0700 (PDT) From: Shawn Guo To: linux-kernel@vger.kernel.org Cc: vinod.koul@intel.com, dan.j.williams@intel.com, cjb@laptop.org, linux-mmc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, patches@linaro.org, Shawn Guo Subject: [PATCH v2 3/3] mmc: mxs-mmc: call dmaengine API to set mmc->max_segs Date: Mon, 6 Jun 2011 15:30:14 +0800 Message-Id: <1307345414-26872-3-git-send-email-shawn.guo@linaro.org> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1307345414-26872-1-git-send-email-shawn.guo@linaro.org> References: <1307345414-26872-1-git-send-email-shawn.guo@linaro.org> With dmaengine API dma_get_max_seg_number added, we now can call the API to get and number and then set mmc->max_segs instead of hard-coding it. Signed-off-by: Shawn Guo --- drivers/mmc/host/mxs-mmc.c | 6 +++++- 1 files changed, 5 insertions(+), 1 deletions(-) diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c index 99d39a6..d783af3 100644 --- a/drivers/mmc/host/mxs-mmc.c +++ b/drivers/mmc/host/mxs-mmc.c @@ -745,11 +745,15 @@ static int mxs_mmc_probe(struct platform_device *pdev) mmc->f_max = 288000000; mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; - mmc->max_segs = 52; mmc->max_blk_size = 1 << 0xf; mmc->max_blk_count = (ssp_is_old()) ? 0xff : 0xffffff; mmc->max_req_size = (ssp_is_old()) ? 0xffff : 0xffffffff; mmc->max_seg_size = dma_get_max_seg_size(host->dmach->device->dev); + /* + * Reserve one segment for carrying on pio words to get dma engine + * program mmc controller registers + */ + mmc->max_segs = dma_get_max_seg_number(host->dmach->device->dev) - 1; platform_set_drvdata(pdev, mmc);