From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D3E55C43217 for ; Tue, 15 Nov 2022 12:47:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230050AbiKOMrN (ORCPT ); Tue, 15 Nov 2022 07:47:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56792 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229725AbiKOMrK (ORCPT ); Tue, 15 Nov 2022 07:47:10 -0500 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D55ED27DC4; Tue, 15 Nov 2022 04:47:05 -0800 (PST) X-UUID: 769bc245b5924426bf4b1b63377e16b4-20221115 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:Content-Transfer-Encoding:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=M5TRJ92JPSujVV77tXKFEvHsZ6iHftmWR79uxeFROKU=; b=tS4Ny40JlbmEW8uvBh/y4Y9Om/qp2ScQBGESjgKaKFephpBbuuOjeaSbHJdj+IOqfNY7O2xoIly5xzuZamcIyE9n1hF1SZDUKIxXXenF8VyXgi+Y4zGfRnx3c/ihN5CTE+mSH9Wro5bJVYtztvbB8yVBP+xoL1myXuHickckbeU=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.13,REQID:96f47c15-5c34-418d-93ff-7e6a7a9a096a,IP:0,U RL:0,TC:0,Content:-25,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:-25 X-CID-META: VersionHash:d12e911,CLOUDID:8e7fbfac-70f0-4e5b-83e6-c0b7915231c3,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0 X-UUID: 769bc245b5924426bf4b1b63377e16b4-20221115 Received: from mtkmbs10n2.mediatek.inc [(172.21.101.183)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1703265728; Tue, 15 Nov 2022 20:46:59 +0800 Received: from mtkmbs13n2.mediatek.inc (172.21.101.108) by mtkmbs13n1.mediatek.inc (172.21.101.193) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Tue, 15 Nov 2022 20:46:58 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkmbs13n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Tue, 15 Nov 2022 20:46:57 +0800 From: Bayi Cheng To: Mark Brown , Matthias Brugger , Ikjoon Jang CC: , , , , , bayi cheng Subject: [PATCH v1] spi: spi-mtk-nor: Unify write buffer on/off Date: Tue, 15 Nov 2022 20:46:55 +0800 Message-ID: <20221115124655.10124-1-bayi.cheng@mediatek.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: bayi cheng The logical structures of mtk_nor_write_buffer_enable and mtk_nor_write_buffer_disable are very similar, So it is necessary to combine them into one. Signed-off-by: bayi cheng --- Change in v1: -Delete mtk_nor_write_buffer_enable. -Delete mtk_nor_write_buffer_disable. -Add mtk_nor_setup_write_buffer. --- --- drivers/spi/spi-mtk-nor.c | 40 ++++++++++++++++----------------------- 1 file changed, 16 insertions(+), 24 deletions(-) diff --git a/drivers/spi/spi-mtk-nor.c b/drivers/spi/spi-mtk-nor.c index d167699a1a96..e8b355f5be56 100644 --- a/drivers/spi/spi-mtk-nor.c +++ b/drivers/spi/spi-mtk-nor.c @@ -443,36 +443,28 @@ static int mtk_nor_read_pio(struct mtk_nor *sp, const struct spi_mem_op *op) return ret; } -static int mtk_nor_write_buffer_enable(struct mtk_nor *sp) +static int mtk_nor_setup_write_buffer(struct mtk_nor *sp, bool on) { int ret; u32 val; - if (sp->wbuf_en) + if (!(sp->wbuf_en ^ on)) return 0; val = readl(sp->base + MTK_NOR_REG_CFG2); - writel(val | MTK_NOR_WR_BUF_EN, sp->base + MTK_NOR_REG_CFG2); - ret = readl_poll_timeout(sp->base + MTK_NOR_REG_CFG2, val, - val & MTK_NOR_WR_BUF_EN, 0, 10000); - if (!ret) - sp->wbuf_en = true; - return ret; -} - -static int mtk_nor_write_buffer_disable(struct mtk_nor *sp) -{ - int ret; - u32 val; + if (on) { + writel(val | MTK_NOR_WR_BUF_EN, sp->base + MTK_NOR_REG_CFG2); + ret = readl_poll_timeout(sp->base + MTK_NOR_REG_CFG2, val, + val & MTK_NOR_WR_BUF_EN, 0, 10000); + } else { + writel(val & ~MTK_NOR_WR_BUF_EN, sp->base + MTK_NOR_REG_CFG2); + ret = readl_poll_timeout(sp->base + MTK_NOR_REG_CFG2, val, + !(val & MTK_NOR_WR_BUF_EN), 0, 10000); + } - if (!sp->wbuf_en) - return 0; - val = readl(sp->base + MTK_NOR_REG_CFG2); - writel(val & ~MTK_NOR_WR_BUF_EN, sp->base + MTK_NOR_REG_CFG2); - ret = readl_poll_timeout(sp->base + MTK_NOR_REG_CFG2, val, - !(val & MTK_NOR_WR_BUF_EN), 0, 10000); if (!ret) - sp->wbuf_en = false; + sp->wbuf_en = on; + return ret; } @@ -482,7 +474,7 @@ static int mtk_nor_pp_buffered(struct mtk_nor *sp, const struct spi_mem_op *op) u32 val; int ret, i; - ret = mtk_nor_write_buffer_enable(sp); + ret = mtk_nor_setup_write_buffer(sp, true); if (ret < 0) return ret; @@ -501,7 +493,7 @@ static int mtk_nor_pp_unbuffered(struct mtk_nor *sp, const u8 *buf = op->data.buf.out; int ret; - ret = mtk_nor_write_buffer_disable(sp); + ret = mtk_nor_setup_write_buffer(sp, false); if (ret < 0) return ret; writeb(buf[0], sp->base + MTK_NOR_REG_WDATA); @@ -608,7 +600,7 @@ static int mtk_nor_exec_op(struct spi_mem *mem, const struct spi_mem_op *op) } if ((op->data.dir == SPI_MEM_DATA_IN) && mtk_nor_match_read(op)) { - ret = mtk_nor_write_buffer_disable(sp); + ret = mtk_nor_setup_write_buffer(sp, false); if (ret < 0) return ret; mtk_nor_setup_bus(sp, op); -- 2.25.1