From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752511AbeDSCBm (ORCPT ); Wed, 18 Apr 2018 22:01:42 -0400 Received: from mail-pl0-f66.google.com ([209.85.160.66]:38316 "EHLO mail-pl0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751878AbeDSCBg (ORCPT ); Wed, 18 Apr 2018 22:01:36 -0400 X-Google-Smtp-Source: AIpwx48W3gI9+qDI5EJK2z1/LcmYS6hwaks4ILr1zsfRa+UHWJ8/LLRekPyURKdNiegcGKIxubWmdA== 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 v2 2/5] dmaengine: sprd: Define the DMA data width type Date: Thu, 19 Apr 2018 10:00:47 +0800 Message-Id: X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <2ec1e8ddade0be5b4412b031b98d0d69a1af421f.1524054807.git.baolin.wang@linaro.org> References: <2ec1e8ddade0be5b4412b031b98d0d69a1af421f.1524054807.git.baolin.wang@linaro.org> In-Reply-To: <2ec1e8ddade0be5b4412b031b98d0d69a1af421f.1524054807.git.baolin.wang@linaro.org> References: <2ec1e8ddade0be5b4412b031b98d0d69a1af421f.1524054807.git.baolin.wang@linaro.org> 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 --- Changes since v1: - No updates. --- 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 dcfa417..65ff0a58 100644 --- a/drivers/dma/sprd-dma.c +++ b/drivers/dma/sprd-dma.c @@ -176,6 +176,14 @@ enum sprd_dma_int_type { SPRD_DMA_CFGERR_INT, }; +/* 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; @@ -604,15 +612,15 @@ 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