From patchwork Fri Dec 31 20:57:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Golle X-Patchwork-Id: 12702054 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 76524C433EF for ; Fri, 31 Dec 2021 20:59:19 +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-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=tzMw/hlT5VnYd++sQMhFkDooyZTGBbVbFuP3KhGV22w=; b=a7ocUNG8EiNKrx FIjA8F+byr9lhWgQycGxeb/HCob8BFBiemdDDvD8+fWKOQGtueLPq1SbYocShPj+vQmf5XivPXLEJ LyUy8PDJ5lp9x9wQCL5gtH8WgsvslU8Th1X/xg5P4q8kPaj8zE5pN5sUtG5cnvnSoCb31Yl+h4kDq 09IHyCS3DJPTBHje4awRVDRNyNd5g1N830UXNMHbQ1ziRSUFXv/Ajj6iR/c9CtJFfquv9gV1p8Ors D1CybQBJFjC+UriMHwx7RAk4wy41Q77zI7NivRVxzT8NH/RCH55QdeUiwSLduSEV+adZRFLcgm3dc w0u+H0CfK8ECBJ3nImWg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1n3OyQ-006X8c-HO; Fri, 31 Dec 2021 20:58:02 +0000 Received: from fudo.makrotopia.org ([2a07:2ec0:3002::71]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1n3OyL-006X74-Og; Fri, 31 Dec 2021 20:57:58 +0000 Received: from local by fudo.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.94.2) (envelope-from ) id 1n3OyI-0004u3-P8; Fri, 31 Dec 2021 21:57:54 +0100 Date: Fri, 31 Dec 2021 20:57:43 +0000 From: Daniel Golle To: linux-mediatek@lists.infradead.org, netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Felix Fietkau , John Crispin , Sean Wang , Mark Lee , "David S. Miller" , Jakub Kicinski , Matthias Brugger , Russell King , Andrew Lunn , Michael Lee , Heiner Kallweit Subject: [PATCH v9 1/3] net: mdio: add helpers to extract clause 45 regad and devad fields Message-ID: References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211231_125757_831731_45DD9E5E X-CRM114-Status: GOOD ( 10.78 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: "Russell King (Oracle)" Add a couple of helpers and definitions to extract the clause 45 regad and devad fields from the regnum passed into MDIO drivers. Tested-by: Daniel Golle Signed-off-by: Daniel Golle Signed-off-by: Russell King (Oracle) --- v9: unchanged v8: First inclusing upon comment on mailing list include/linux/mdio.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/include/linux/mdio.h b/include/linux/mdio.h index 9f3587a61e145..ecac96d52e010 100644 --- a/include/linux/mdio.h +++ b/include/linux/mdio.h @@ -7,6 +7,7 @@ #define __LINUX_MDIO_H__ #include +#include #include /* Or MII_ADDR_C45 into regnum for read/write on mii_bus to enable the 21 bit @@ -14,6 +15,7 @@ */ #define MII_ADDR_C45 (1<<30) #define MII_DEVADDR_C45_SHIFT 16 +#define MII_DEVADDR_C45_MASK GENMASK(20, 16) #define MII_REGADDR_C45_MASK GENMASK(15, 0) struct gpio_desc; @@ -381,6 +383,16 @@ static inline u32 mdiobus_c45_addr(int devad, u16 regnum) return MII_ADDR_C45 | devad << MII_DEVADDR_C45_SHIFT | regnum; } +static inline u16 mdiobus_c45_regad(u32 regnum) +{ + return FIELD_GET(MII_REGADDR_C45_MASK, regnum); +} + +static inline u16 mdiobus_c45_devad(u32 regnum) +{ + return FIELD_GET(MII_DEVADDR_C45_MASK, regnum); +} + static inline int __mdiobus_c45_read(struct mii_bus *bus, int prtad, int devad, u16 regnum) {