From patchwork Wed Dec 10 15:48:25 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrzej Hajda X-Patchwork-Id: 419726 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id B81231400D5 for ; Thu, 11 Dec 2014 02:52:30 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757895AbaLJPvx (ORCPT ); Wed, 10 Dec 2014 10:51:53 -0500 Received: from mailout4.w1.samsung.com ([210.118.77.14]:60985 "EHLO mailout4.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758015AbaLJPtI (ORCPT ); Wed, 10 Dec 2014 10:49:08 -0500 Received: from eucpsbgm1.samsung.com (unknown [203.254.199.244]) by mailout4.w1.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0NGD001L8ISMPCA0@mailout4.w1.samsung.com>; Wed, 10 Dec 2014 15:53:10 +0000 (GMT) X-AuditID: cbfec7f4-b7f126d000001e9a-ba-54886b722820 Received: from eusync1.samsung.com ( [203.254.199.211]) by eucpsbgm1.samsung.com (EUCPMTA) with SMTP id 6D.29.07834.27B68845; Wed, 10 Dec 2014 15:49:06 +0000 (GMT) Received: from AMDC1061.digital.local ([106.116.147.88]) by eusync1.samsung.com (Oracle Communications Messaging Server 7u4-23.01 (7.0.4.23.0) 64bit (built Aug 10 2011)) with ESMTPA id <0NGD00L5CIL48260@eusync1.samsung.com>; Wed, 10 Dec 2014 15:49:06 +0000 (GMT) From: Andrzej Hajda To: linux-kernel@vger.kernel.org (open list) Cc: Andrzej Hajda , Marek Szyprowski , Greg Kroah-Hartman , Mike Turquette , Russell King , Linus Walleij , Alexandre Courbot , Thierry Reding , Inki Dae , Kishon Vijay Abraham I , Liam Girdwood , Mark Brown , Grant Likely , Rob Herring , linux-arm-kernel@lists.infradead.org (moderated list:ARM/CLKDEV SUPPORT), linux-gpio@vger.kernel.org (open list:GPIO SUBSYSTEM), dri-devel@lists.freedesktop.org (open list:DRM PANEL DRIVERS), linux-samsung-soc@vger.kernel.org (moderated list:ARM/S5P EXYNOS AR...), devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND...), boris.brezillon@free-electrons.com Subject: [RFC 07/15] clk: add DT parsing function Date: Wed, 10 Dec 2014 16:48:25 +0100 Message-id: <1418226513-14105-8-git-send-email-a.hajda@samsung.com> X-Mailer: git-send-email 1.9.1 In-reply-to: <1418226513-14105-1-git-send-email-a.hajda@samsung.com> References: <1418226513-14105-1-git-send-email-a.hajda@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrOLMWRmVeSWpSXmKPExsVy+t/xy7pF2R0hBisuKlrcWneO1eLAi4Us FlMfPmGzmH8EyL3y9T2bxblXj1gsDvzZwWjRvHg9m8Wk+xNYLC487WGz+Halg8liyp/lTBab Hl9jtdg8/w+jxeVdc9gsZpzfx2Rx+zKvxdojd9ktnk64yGbRuvcIu8XPXfNYHEQ9Wpp72Dye bLrI6LFz1l12j02rOtk87lzbw+axf+4ado/73ceZPDYvqffo27KK0eP4je1MHp83yQVwR3HZ pKTmZJalFunbJXBlfDjTzV5wmqPixuyLLA2Mn9m6GDk4JARMJD7Mtepi5AQyxSQu3FsPFObi EBJYyiix+Pc1Zginj0ni/eRWRpAqNgFNib+bb7KB2CICOhLXe7rBipgFNrBLrJu+DywhLGAo 8eLWYhaQDSwCqhJfLiiChHkFnCW2XpvFCrFNTuLksclgNqeAi8Tf53vB5gsB1SzZ9p51AiPv AkaGVYyiqaXJBcVJ6bmGesWJucWleel6yfm5mxghkfFlB+PiY1aHGAU4GJV4eM0VW0OEWBPL iitzDzFKcDArifAuTO4IEeJNSaysSi3Kjy8qzUktPsTIxMEp1cBYvZOxb9LnvNntX1i9ft+Q 1ToYWhLVz6a+LOzwHRbpyNTHB/mzVvqwn2o40PFL3W1fVmNk6OGWxFy1W/r8v3j3tUmceeJl eVwg8wlD69LLbM94vLqytOaJNihe2tKnKXt5/Y5pNz43psho1Jgp/Tw4s9DC7RxTWYFX7BmJ kpyv9rvDpASLtZVYijMSDbWYi4oTAfUIKadqAgAA Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org The patch adds function for parsing Device Tree to get clock specifier. The function could be ultimately used by clock core. Signed-off-by: Andrzej Hajda --- drivers/clk/clkdev.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/clk/clkdev.c b/drivers/clk/clkdev.c index da4bda8..bd22750 100644 --- a/drivers/clk/clkdev.c +++ b/drivers/clk/clkdev.c @@ -120,6 +120,29 @@ struct clk *of_clk_get_by_name(struct device_node *np, const char *name) return clk; } EXPORT_SYMBOL(of_clk_get_by_name); + +static int of_get_clock_spec(struct device *dev, const char *name, + struct of_phandle_args *spec) +{ + struct device_node *np = dev->of_node; + + while (np) { + int idx = 0; + + if (name) + idx = of_property_match_string(np, "clock-names", name); + + if (!of_parse_phandle_with_args(np, "clocks", "#clock-cells", + idx, spec)) + return 0; + + np = np->parent; + if (np && !of_get_property(np, "clock-ranges", NULL)) + break; + } + + return -ENOENT; +} #endif /*