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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8C11CC433EF for ; Mon, 3 Jan 2022 09:00:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date:Message-ID:From: References:Cc:To:Subject:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=o4NpPVwl3KH3yIP9jFYvDJxrcf1AH4A7kPdouIKDm60=; b=ZYGKkUJCr31oL3t6KX19RK0ao6 lY4xqScXcLDGVbOkGSsmxxhVM8bBnRkD4lUtP3X0Ye2EJpziPbGkgbZMDg4Y8YSItmX5hTLrLN2F3 ZuPbLDIaCPEy+npcLTaBhe+a4CQBC32Nz8UxoNgP/1cvvyrDBrdysXPkBwsHGuZqz30y6iz1HnXJq X48wCEaJmVFfbcWj6hAmniek7E3ZXcj9sza+CcIYDgF6IhrZPzfHLXKBR43GlDri4WLATPbRS4/j8 HiS32G8UroqVGCc/SK+s+N1bVDqVn3f75RcQ9Gd7yPxP+LCGdu+B48jgowY0tzPCXBQpB1LtB5tHp QSl9KywQ==; 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Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.13.0 MIME-Version: 1.0 In-Reply-To: <75b2773d1d170f42bae0774dbc58d1458cb25502.camel@mediatek.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220103_005912_046839_B1881DC8 X-CRM114-Status: GOOD ( 20.17 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Il 30/12/21 03:06, Chunfeng Yun ha scritto: > On Fri, 2021-12-24 at 11:10 +0100, AngeloGioacchino Del Regno wrote: >> Il 18/12/21 09:28, Chunfeng Yun ha scritto: >>> Add three helpers mtk_phy_clear/set/update_bits() for registers >>> operation >>> >>> Signed-off-by: Chunfeng Yun >>> --- >>> v2: new patch, add register access helpers, >>> Add updatel() macro suggested by Vinod, here add more ones >>> instead. >>> --- >>> drivers/phy/mediatek/phy-mtk-io.h | 38 >>> +++++++++++++++++++++++++++++++ >>> 1 file changed, 38 insertions(+) >>> create mode 100644 drivers/phy/mediatek/phy-mtk-io.h >>> >>> diff --git a/drivers/phy/mediatek/phy-mtk-io.h >>> b/drivers/phy/mediatek/phy-mtk-io.h >>> new file mode 100644 >>> index 000000000000..500fcdab165d >>> --- /dev/null >>> +++ b/drivers/phy/mediatek/phy-mtk-io.h >>> @@ -0,0 +1,38 @@ >>> +/* SPDX-License-Identifier: GPL-2.0 */ >>> +/* >>> + * Copyright (C) 2021 MediaTek Inc. >>> + * >>> + * Author: Chunfeng Yun >>> + */ >>> + >>> +#ifndef __PHY_MTK_H__ >>> +#define __PHY_MTK_H__ >>> + >>> +#include >>> + >>> +static inline void mtk_phy_clear_bits(void __iomem *reg, u32 bits) >>> +{ >>> + u32 tmp = readl(reg); >>> + >>> + tmp &= ~bits; >>> + writel(tmp, reg); >>> +} >>> + >>> +static inline void mtk_phy_set_bits(void __iomem *reg, u32 bits) >>> +{ >>> + u32 tmp = readl(reg); >>> + >>> + tmp |= bits; >>> + writel(tmp, reg); >>> +} >>> + >>> +static inline void mtk_phy_update_bits(void __iomem *reg, u32 >>> mask, u32 val) >>> +{ >>> + u32 tmp = readl(reg); >>> + >>> + tmp &= ~mask; >>> + tmp |= val & mask; >>> + writel(tmp, reg); >>> +} >>> + >>> +#endif >>> >> >> These helpers are almost exactly duplicating what >> regmap_update_bits() is doing. >> I appreciate the effort to stop open-coding the same sequences over >> and over by >> adding such helper functions, > I agree with you. >> but I think that the proper way of doing what you >> are proposing is not to add custom functions but rather reuse what >> the Linux APIs >> give you. > I also like to use common APIs ASAP, but not found suitable ones. > This may be a problem, I found that some similar custom helps already > added under phy fold. > >> >> What about doing a conversion to use regmap on this driver? > No, we don't use regmap here, these registers are monopolized by t-phy, > it's not syscon. > > Hello, The regmap API allows this kind of usage, registers don't necessarily have to be part of a syscon. Regards, - Angelo _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel