From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: [2/5] dmaengine: sprd: Define the DMA data width type From: Baolin Wang Message-Id: <695931ac827adb5b2c5a7939341ff61ba00af1a1.1523346135.git.baolin.wang@linaro.org> Date: Tue, 10 Apr 2018 15:46:04 +0800 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 List-ID: RGVmaW5lIHRoZSBETUEgZGF0YSB3aWR0aCB0eXBlIHRvIG1ha2UgY29kZSBtb3JlIHJlYWRhYmxl LgoKU2lnbmVkLW9mZi1ieTogQmFvbGluIFdhbmcgPGJhb2xpbi53YW5nQGxpbmFyby5vcmc+Ci0t LQogZHJpdmVycy9kbWEvc3ByZC1kbWEuYyB8ICAgMTQgKysrKysrKysrKystLS0KIDEgZmlsZSBj aGFuZ2VkLCAxMSBpbnNlcnRpb25zKCspLCAzIGRlbGV0aW9ucygtKQoKZGlmZiAtLWdpdCBhL2Ry aXZlcnMvZG1hL3NwcmQtZG1hLmMgYi9kcml2ZXJzL2RtYS9zcHJkLWRtYS5jCmluZGV4IGFmOWMx NTYuLjlmNDRkNmYgMTAwNjQ0Ci0tLSBhL2RyaXZlcnMvZG1hL3NwcmQtZG1hLmMKKysrIGIvZHJp dmVycy9kbWEvc3ByZC1kbWEuYwpAQCAtMTg1LDYgKzE4NSwxNCBAQCBlbnVtIHNwcmRfZG1hX3N0 ZXAgewogCVNQUkRfRE1BX0RXT1JEX1NURVAgPSBCSVQoMyksCiB9OwogCisvKiBkbWEgZGF0YSB3 aWR0aCB2YWx1ZXMgKi8KK2VudW0gc3ByZF9kbWFfZGF0YXdpZHRoIHsKKwlTUFJEX0RNQV9EQVRB V0lEVEhfMV9CWVRFLAorCVNQUkRfRE1BX0RBVEFXSURUSF8yX0JZVEVTLAorCVNQUkRfRE1BX0RB VEFXSURUSF80X0JZVEVTLAorCVNQUkRfRE1BX0RBVEFXSURUSF84X0JZVEVTLAorfTsKKwogLyog ZG1hIGNoYW5uZWwgaGFyZHdhcmUgY29uZmlndXJhdGlvbiAqLwogc3RydWN0IHNwcmRfZG1hX2No bl9odyB7CiAJdTMyIHBhdXNlOwpAQCAtNjEzLDE1ICs2MjEsMTUgQEAgc3RhdGljIGludCBzcHJk X2RtYV9jb25maWcoc3RydWN0IGRtYV9jaGFuICpjaGFuLCBzdHJ1Y3Qgc3ByZF9kbWFfZGVzYyAq c2Rlc2MsCiAJdTMyIGZpeF9tb2RlID0gMCwgZml4X2VuID0gMDsKIAogCWlmIChJU19BTElHTkVE KGxlbiwgNCkpIHsKLQkJZGF0YXdpZHRoID0gMjsKKwkJZGF0YXdpZHRoID0gU1BSRF9ETUFfREFU QVdJRFRIXzRfQllURVM7CiAJCXNyY19zdGVwID0gU1BSRF9ETUFfV09SRF9TVEVQOwogCQlkZXNf c3RlcCA9IFNQUkRfRE1BX1dPUkRfU1RFUDsKIAl9IGVsc2UgaWYgKElTX0FMSUdORUQobGVuLCAy KSkgewotCQlkYXRhd2lkdGggPSAxOworCQlkYXRhd2lkdGggPSBTUFJEX0RNQV9EQVRBV0lEVEhf Ml9CWVRFUzsKIAkJc3JjX3N0ZXAgPSBTUFJEX0RNQV9TSE9SVF9TVEVQOwogCQlkZXNfc3RlcCA9 IFNQUkRfRE1BX1NIT1JUX1NURVA7CiAJfSBlbHNlIHsKLQkJZGF0YXdpZHRoID0gMDsKKwkJZGF0 YXdpZHRoID0gU1BSRF9ETUFfREFUQVdJRFRIXzFfQllURTsKIAkJc3JjX3N0ZXAgPSBTUFJEX0RN QV9CWVRFX1NURVA7CiAJCWRlc19zdGVwID0gU1BSRF9ETUFfQllURV9TVEVQOwogCX0K 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