From patchwork Tue Jul 15 22:45:14 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 4561121 Return-Path: X-Original-To: patchwork-linux-sh@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 0F99B9F37C for ; Tue, 15 Jul 2014 22:45:30 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 36E8A201B4 for ; Tue, 15 Jul 2014 22:45:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 64D2E2018A for ; Tue, 15 Jul 2014 22:45:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757568AbaGOWpY (ORCPT ); Tue, 15 Jul 2014 18:45:24 -0400 Received: from perceval.ideasonboard.com ([95.142.166.194]:54062 "EHLO perceval.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751282AbaGOWpY (ORCPT ); Tue, 15 Jul 2014 18:45:24 -0400 Received: from avalon.ideasonboard.com (unknown [91.178.197.32]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 40EFA35A00; Wed, 16 Jul 2014 00:44:18 +0200 (CEST) From: Laurent Pinchart To: linux-sh@vger.kernel.org Cc: linux-mmc@vger.kernel.org, Guennadi Liakhovetski , Ian Molton Subject: [PATCH 04/11] mmc: tmio: Configure DMA slave bus width Date: Wed, 16 Jul 2014 00:45:14 +0200 Message-Id: <1405464321-4723-5-git-send-email-laurent.pinchart+renesas@ideasonboard.com> X-Mailer: git-send-email 1.8.5.5 In-Reply-To: <1405464321-4723-1-git-send-email-laurent.pinchart+renesas@ideasonboard.com> References: <1405464321-4723-1-git-send-email-laurent.pinchart+renesas@ideasonboard.com> Sender: linux-sh-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Even though some implementations support 4-bytes data register access, the tmio driver never configures the hardware in such a way and always performs 2-bytes accesses. Hardcode the DMA transfer size to 2 bytes. Signed-off-by: Laurent Pinchart --- drivers/mmc/host/tmio_mmc_dma.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/mmc/host/tmio_mmc_dma.c b/drivers/mmc/host/tmio_mmc_dma.c index 03e7b28..eb8f1d5 100644 --- a/drivers/mmc/host/tmio_mmc_dma.c +++ b/drivers/mmc/host/tmio_mmc_dma.c @@ -294,6 +294,7 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat cfg.slave_id = pdata->dma->slave_id_tx; cfg.direction = DMA_MEM_TO_DEV; cfg.dst_addr = res->start + (CTL_SD_DATA_PORT << host->pdata->bus_shift); + cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; cfg.src_addr = 0; ret = dmaengine_slave_config(host->chan_tx, &cfg); if (ret < 0) @@ -312,6 +313,7 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat cfg.slave_id = pdata->dma->slave_id_rx; cfg.direction = DMA_DEV_TO_MEM; cfg.src_addr = cfg.dst_addr; + cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; cfg.dst_addr = 0; ret = dmaengine_slave_config(host->chan_rx, &cfg); if (ret < 0)