From patchwork Sun Nov 25 16:21:18 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hao Zhang X-Patchwork-Id: 1002823 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-pwm-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.b="lqTSXYBD"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 432wKR5HLFz9s1c for ; Mon, 26 Nov 2018 03:21:31 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726429AbeKZDMu (ORCPT ); Sun, 25 Nov 2018 22:12:50 -0500 Received: from mail-pg1-f196.google.com ([209.85.215.196]:38626 "EHLO mail-pg1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726098AbeKZDMu (ORCPT ); Sun, 25 Nov 2018 22:12:50 -0500 Received: by mail-pg1-f196.google.com with SMTP id g189so5010125pgc.5; Sun, 25 Nov 2018 08:21:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:mime-version:content-disposition :user-agent; bh=Omlkkwv0msPmZtThXMkJDsvh3cmK0KZre5FygCF5oVA=; b=lqTSXYBDM3nVfEuliT1hheT5MGrh4hTc1uK718BM1aWQpIeONRz9c+NQluhCE5Y3kN upjcf3t6u/mmkSuYQCbPZQFaHWEBTybRTdsbB6hjehIkZp8YONBeboUkuqjHvoisQGB9 dz5hl2J6KXdjqz39Bn8ib5Jd9OHzdJiCuYTb+Z9ULYUisL/WjhS4827AqgBQ6efD00IX q+REItCL1IOGm1KCMPd/Rkm8C0uHiVuP0qAjAqahR9n6q8qavaFy7QYbnbtIKewhFBXM MBkwvSseWExhYsDeUtFGd/oDpy9AXumnsS8Tzp0fidFY7QqFZ7YCqMS4Yi9lgQQLSnhk ivmA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition:user-agent; bh=Omlkkwv0msPmZtThXMkJDsvh3cmK0KZre5FygCF5oVA=; b=c+Hf9ER+GQjjAl9e+9J46HSemFpHKpLe4TUyoaqxnIVSlTVz1regfQiNDB0x/m4z8a QjlLGHGgN6GiYhdHleUXaAWGd16SEXvOPQpkaY3pYPZ+g8eXOlFEr4MNupQxpv/kHRmD oFqtPrirQ/ir/3HRQY2vFkt3+6N4SQNmZhBY5iSvCGGILe+9Q2LSbLmMbg+K3ZDyy7pj vd54XIdgv2SLmqNIRXJM3ePtUsBCHjIufhnOGHGzz6omminfCsqsKwq6J3aL6Vb22Bzj UM+BzE9A8dQH8nqh+VAsDuGxkG6rLUu8JHTc2a6XFBI6CbvpTC/U5kPXbKmjq6gFXjT7 vptQ== X-Gm-Message-State: AGRZ1gIRQejPYrATkP8ZDe9psJ0jORLgDKAWJ+E1qCPRul2kH0FUnp3w LtXZwzA41XQSrVt1QYBCbOA= X-Google-Smtp-Source: AJdET5ciYiampuBjjEcVYaTQGagu+wjsA6VHFu5dMyVjTlj1Xtn2vreUdqcqlusZNdRHJNK/uuSudQ== X-Received: by 2002:a63:7d06:: with SMTP id y6mr21319483pgc.171.1543162885225; Sun, 25 Nov 2018 08:21:25 -0800 (PST) Received: from arx-s1 ([116.238.148.251]) by smtp.gmail.com with ESMTPSA id o189sm44994655pfg.117.2018.11.25.08.21.21 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 25 Nov 2018 08:21:24 -0800 (PST) Date: Mon, 26 Nov 2018 00:21:18 +0800 From: Hao Zhang To: robh+dt@kernel.org, mark.rutland@arm.com, maxime.ripard@bootlin.com, wens@csie.org, mturquette@baylibre.com, sboyd@kernel.org, thierry.reding@gmail.com Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pwm@vger.kernel.org, linux-sunxi@googlegroups.com, hao5781286@gmail.com Subject: [PATCH v3 4/6] DEV: CLK: add function to check the using clock name of driver. Message-ID: <20181125162118.GA5358@arx-s1> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-pwm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pwm@vger.kernel.org In some situation we want to check clock whether is we want and after the driver been probed use to change different clock source. Signed-off-by: Hao Zhang --- drivers/clk/clk.c | 6 ++++++ include/linux/clk-provider.h | 1 + 2 files changed, 7 insertions(+) diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index d31055a..3d2c2cd 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -3466,6 +3466,12 @@ static int devm_clk_hw_match(struct device *dev, void *res, void *data) return hw == data; } +bool devm_clk_name_match(struct clk *clk, const char *string) +{ + return match_string(&clk->con_id, 1, string) == 0; +} +EXPORT_SYMBOL_GPL(devm_clk_name_match); + /** * devm_clk_unregister - resource managed clk_unregister() * @clk: clock to unregister diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index 08b1aa7..5cd2eed 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -764,6 +764,7 @@ struct clk *devm_clk_register(struct device *dev, struct clk_hw *hw); int __must_check clk_hw_register(struct device *dev, struct clk_hw *hw); int __must_check devm_clk_hw_register(struct device *dev, struct clk_hw *hw); +bool devm_clk_name_match(struct clk *clk, const char *string); void clk_unregister(struct clk *clk); void devm_clk_unregister(struct device *dev, struct clk *clk);