From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752435AbeDJHqo (ORCPT ); Tue, 10 Apr 2018 03:46:44 -0400 Received: from mail-pl0-f65.google.com ([209.85.160.65]:46287 "EHLO mail-pl0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751978AbeDJHql (ORCPT ); Tue, 10 Apr 2018 03:46:41 -0400 X-Google-Smtp-Source: AIpwx49mMM226TrQFqUpzY8jo7TZEdseerIMasRw9vFl9yHBPcZcHlfgyPZXveAJWXOcaalWPz2y5Q== From: Baolin Wang To: dan.j.williams@intel.com, vinod.koul@intel.com Cc: eric.long@spreadtrum.com, broonie@kernel.org, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, baolin.wang@linaro.org Subject: [PATCH 2/5] dmaengine: sprd: Define the DMA data width type Date: Tue, 10 Apr 2018 15:46:04 +0800 Message-Id: <695931ac827adb5b2c5a7939341ff61ba00af1a1.1523346135.git.baolin.wang@linaro.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Define the DMA data width type to make code more readable. Signed-off-by: Baolin Wang --- drivers/dma/sprd-dma.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/dma/sprd-dma.c b/drivers/dma/sprd-dma.c index af9c156..9f44d6f 100644 --- a/drivers/dma/sprd-dma.c +++ b/drivers/dma/sprd-dma.c @@ -185,6 +185,14 @@ enum sprd_dma_step { SPRD_DMA_DWORD_STEP = BIT(3), }; +/* dma data width values */ +enum sprd_dma_datawidth { + SPRD_DMA_DATAWIDTH_1_BYTE, + SPRD_DMA_DATAWIDTH_2_BYTES, + SPRD_DMA_DATAWIDTH_4_BYTES, + SPRD_DMA_DATAWIDTH_8_BYTES, +}; + /* dma channel hardware configuration */ struct sprd_dma_chn_hw { u32 pause; @@ -613,15 +621,15 @@ static int sprd_dma_config(struct dma_chan *chan, struct sprd_dma_desc *sdesc, u32 fix_mode = 0, fix_en = 0; if (IS_ALIGNED(len, 4)) { - datawidth = 2; + datawidth = SPRD_DMA_DATAWIDTH_4_BYTES; src_step = SPRD_DMA_WORD_STEP; des_step = SPRD_DMA_WORD_STEP; } else if (IS_ALIGNED(len, 2)) { - datawidth = 1; + datawidth = SPRD_DMA_DATAWIDTH_2_BYTES; src_step = SPRD_DMA_SHORT_STEP; des_step = SPRD_DMA_SHORT_STEP; } else { - datawidth = 0; + datawidth = SPRD_DMA_DATAWIDTH_1_BYTE; src_step = SPRD_DMA_BYTE_STEP; des_step = SPRD_DMA_BYTE_STEP; } -- 1.7.9.5