From patchwork Mon Mar 23 02:56:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dejin Zheng X-Patchwork-Id: 1259820 Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=IApyGohZ; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 48lzZ24Bp1z9sR4 for ; Mon, 23 Mar 2020 13:57:14 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727212AbgCWC5N (ORCPT ); Sun, 22 Mar 2020 22:57:13 -0400 Received: from mail-pf1-f193.google.com ([209.85.210.193]:35565 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726983AbgCWC5N (ORCPT ); Sun, 22 Mar 2020 22:57:13 -0400 Received: by mail-pf1-f193.google.com with SMTP id u68so6784047pfb.2; Sun, 22 Mar 2020 19:57:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=XPNpREPrKXsdscJCtGIsFykCiZzhn9WW7+8w0rGQ9A4=; b=IApyGohZoFvLgK6DbM4qeGYTrqNTPHBgg65x6HQnmkoR6Lp6HPFxVpT15q5wvFGgnE WO7qNfuzWrGBCUdGPjLQn2os4DFelBRs4FLu4GsN3rhU6n/EHw0yGi09sieQsCrDGYrA rkXk/5Svg3OXU8qwAB4M2KKscFCz9djHSjqW98ScTH5UqzPtKo/FdG0aryUHrQy7jlLs KY5kXl3wDnlFmKtZFJKs5DGKE8l21HdLtNUZqDqOSFxlJPKrt/syQQtjDUkPUFYTIQyd UmFH4MIST7JLDrgKhCey0Mi8x77SCRQcgI1gL1QfN9+XXNq7Y43sRddFhD1EimIJKAbc 2yDg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=XPNpREPrKXsdscJCtGIsFykCiZzhn9WW7+8w0rGQ9A4=; b=AmdBz48yGAgzoAdmfor5H07P0SkDIuz/B7qvrXRPsw31g5eHtrJTojak6hnduuKXEN +/HqSHBkEpvjYT3AjzCT44nK9LKFxrcQbkkVrNGNPaGinXUY0Ko4PbvpVI7TcYgdATSN RVKuyScB03xBaS+9POIKtcgahUH42bbd+wmF9E8+8ERIFm7B3NFtCqT4M06nhxdPTfsu XGOj+vG6zKZDeqQvD2GYHqKTS/FWm69+MmD2wzSLpzg8UXykkaeF7Kaer3rajdSAe3Dn RU2gh8sbHQE0Vean9CD4a6nGjM42+oBq5SayiyxIEmIdATXZwPtwPSfgKgUBwyyEnjw2 /WrA== X-Gm-Message-State: ANhLgQ1ER3e1+OJc/RQaOJMqQ1lTuvR3ElU94xom0y3SmUvKY88DvsLt qPdOK7/q89BaWEzq0DNloho= X-Google-Smtp-Source: ADFU+vtAdouusdfXsITnRRrZHpdMhP9G8zf7UdP+zkETppWYMIaJJw0JohSxx9vjumWLhnptEzipjQ== X-Received: by 2002:a63:2166:: with SMTP id s38mr18848174pgm.83.1584932231771; Sun, 22 Mar 2020 19:57:11 -0700 (PDT) Received: from localhost (104.128.80.227.16clouds.com. [104.128.80.227]) by smtp.gmail.com with ESMTPSA id h4sm2622405pgk.72.2020.03.22.19.57.10 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sun, 22 Mar 2020 19:57:11 -0700 (PDT) From: Dejin Zheng To: andrew@lunn.ch, f.fainelli@gmail.com, hkallweit1@gmail.com, linux@armlinux.org.uk, davem@davemloft.net, mchehab+samsung@kernel.org, gregkh@linuxfoundation.org, broonie@kernel.org, tglx@linutronix.de, netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Dejin Zheng Subject: [PATCH net-next v6 03/10] net: phy: introduce phy_read_mmd_poll_timeout macro Date: Mon, 23 Mar 2020 10:56:26 +0800 Message-Id: <20200323025633.6069-4-zhengdejin5@gmail.com> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200323025633.6069-1-zhengdejin5@gmail.com> References: <20200323025633.6069-1-zhengdejin5@gmail.com> MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org it is sometimes necessary to poll a phy register by phy_read_mmd() function until its value satisfies some condition. introduce phy_read_mmd_poll_timeout() macros that do this. Suggested-by: Andrew Lunn Reviewed-by: Andrew Lunn Signed-off-by: Dejin Zheng Reviewed-by: Florian Fainelli --- v5 -> v6: - no changed v4 -> v5: - no changed v3 -> v4: - deal with precedence issues for parameter cond. v2 -> v3: - modify the parameter order of newly added functions. phy_read_mmd_poll_timeout(val, cond, sleep_us, timeout_us, \ phydev, devaddr, regnum) || \/ phy_read_mmd_poll_timeout(phydev, devaddr regnum, val, cond, \ sleep_us, timeout_us) v1 -> v2: - passed a phydev, device address and a reg to replace args... parameter in phy_read_mmd_poll_timeout() by Andrew Lunn 's suggestion. Andrew Lunn , Thanks very much for your help! - handle phy_read_mmd return an error(the return value < 0) in phy_read_mmd_poll_timeout(). Thanks Andrew again. include/linux/phy.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/include/linux/phy.h b/include/linux/phy.h index 36d9dea04016..42a5ec9288d5 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -24,6 +24,7 @@ #include #include #include +#include #include @@ -784,6 +785,20 @@ static inline int __phy_modify_changed(struct phy_device *phydev, u32 regnum, */ int phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum); +#define phy_read_mmd_poll_timeout(phydev, devaddr, regnum, val, cond, \ + sleep_us, timeout_us) \ +({ \ + int ret = 0; \ + ret = read_poll_timeout(phy_read_mmd, val, (cond) || val < 0, \ + sleep_us, timeout_us, phydev, devaddr, \ + regnum); \ + if (val < 0) \ + ret = val; \ + if (ret) \ + phydev_err(phydev, "%s failed: %d\n", __func__, ret); \ + ret; \ +}) + /** * __phy_read_mmd - Convenience function for reading a register * from an MMD on a given PHY.