From patchwork Mon Dec 15 03:38:59 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amit Kachhap X-Patchwork-Id: 5490171 Return-Path: X-Original-To: patchwork-linux-pm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 84EA0BEEA8 for ; Mon, 15 Dec 2014 03:46:24 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5C96720A03 for ; Mon, 15 Dec 2014 03:46:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3F98F209F9 for ; Mon, 15 Dec 2014 03:46:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750768AbaLODqU (ORCPT ); Sun, 14 Dec 2014 22:46:20 -0500 Received: from mailout3.samsung.com ([203.254.224.33]:42880 "EHLO mailout3.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750713AbaLODqT (ORCPT ); Sun, 14 Dec 2014 22:46:19 -0500 Received: from epcpsbgr1.samsung.com (u141.gpu120.samsung.co.kr [203.254.230.141]) by mailout3.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0NGL006SYUH42YA0@mailout3.samsung.com>; Mon, 15 Dec 2014 12:46:16 +0900 (KST) Received: from epcpsbgm2.samsung.com ( [172.20.52.124]) by epcpsbgr1.samsung.com (EPCPMTA) with SMTP id 93.89.17016.8895E845; Mon, 15 Dec 2014 12:46:16 +0900 (KST) X-AuditID: cbfee68d-f79296d000004278-07-548e5988ecc4 Received: from epmmp2 ( [203.254.227.17]) by epcpsbgm2.samsung.com (EPCPMTA) with SMTP id C7.B6.09430.8895E845; Mon, 15 Dec 2014 12:46:16 +0900 (KST) Received: from chromebld-server.sisodomain.com ([107.108.73.106]) by mmp2.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0NGL002MDUG7GJ10@mmp2.samsung.com>; Mon, 15 Dec 2014 12:46:16 +0900 (KST) From: Amit Daniel Kachhap To: linux-pm@vger.kernel.org Cc: linux-kernel@vger.kernel.org, "Rafael J. Wysocki" , Len Brown , Ulf Hansson , Kevin Hilman , Geert Uytterhoeven , Pavel Machek , linux-arm-kernel@lists.infradead.org, Amit Daniel Kachhap Subject: [PATCH v2] PM/ Domains: Export of_genpd_get_from_provider function. Date: Mon, 15 Dec 2014 09:08:59 +0530 Message-id: <1418614739-7989-1-git-send-email-amit.daniel@samsung.com> X-Mailer: git-send-email 2.2.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrLLMWRmVeSWpSXmKPExsWyRsSkRrcjsi/E4N5UOYuGqyEWc2dPYrT4 engFo8WsKXuZLDY9vsZqcXnXHDaLz71HGC3unjrKZnHm9CVWi+Nrwx24PCae1fVYvOclk8ed a3vYPDYvqffYcrWdxaNvyypGjxWrv7N7fN4kF8ARxWWTkpqTWZZapG+XwJWx7u9ttoKXohXb eswbGLcLdTFycEgImEjc7dXsYuQEMsUkLtxbz9bFyMUhJLCUUeLry/2MEAkTic1rjzBCJKYz Sjx69IcFwpnAJHH19SU2kCo2AWOJnzv3s4PYIgIyElOv7GcFKWIWuMsk8XT9Y2aQhLCAj8Sl MyvBGlgEVCXabs8EW8Er4CZx+uBcZoh1chJbbj1iB2mWEFjGLjHj0wlWiAYBiW+TD7FA3C0r sekAVL2kxMEVN1gmMAouYGRYxSiaWpBcUJyUXmSoV5yYW1yal66XnJ+7iREY6qf/PevdwXj7 gPUhRgEORiUeXob/vSFCrIllxZW5hxhNgTZMZJYSTc4HRlReSbyhsZmRhamJqbGRuaWZkjiv otTPYCGB9MSS1OzU1ILUovii0pzU4kOMTBycUg2MscWRX36tFVolV5fq9/PA9tSrzffue3d9 EzrS+f/97T+GUxt72V4febBugt3ue4nPH06w+q22z0Gseru2DLfBKtltx4R0JBM+bVqoEB60 e3XUa/6AQ5tZ/lerhXyvMyz2Y+g8aixvYOMjXlV9YvKCuVP8AuW4NXTvm/MKetWvOyLl++hD /lF7JZbijERDLeai4kQA+bNEQnACAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrBIsWRmVeSWpSXmKPExsVy+t9jQd2OyL4Qg2+3RCwaroZYzJ09idHi 6+EVjBazpuxlstj0+BqrxeVdc9gsPvceYbS4e+oom8WZ05dYLY6vDXfg8ph4Vtdj8Z6XTB53 ru1h89i8pN5jy9V2Fo++LasYPVas/s7u8XmTXABHVAOjTUZqYkpqkUJqXnJ+SmZeuq2Sd3C8 c7ypmYGhrqGlhbmSQl5ibqqtkotPgK5bZg7QhUoKZYk5pUChgMTiYiV9O0wTQkPcdC1gGiN0 fUOC4HqMDNBAwhrGjHV/b7MVvBSt2NZj3sC4XaiLkZNDQsBEYvPaI4wQtpjEhXvr2boYuTiE BKYzSjx69IcFwpnAJHH19SU2kCo2AWOJnzv3s4PYIgIyElOv7GcFKWIWuMsk8XT9Y2aQhLCA j8SlMyvBGlgEVCXabs8EW8Er4CZx+uBcZoh1chJbbj1in8DIvYCRYRWjaGpBckFxUnqukV5x Ym5xaV66XnJ+7iZGcCw9k97BuKrB4hCjAAejEg8vw//eECHWxLLiytxDjBIczEoivFOY+kKE eFMSK6tSi/Lji0pzUosPMZoCbZ/ILCWanA+M87ySeENjE3NTY1NLEwsTM0slcV4l+7YQIYH0 xJLU7NTUgtQimD4mDk6pBkbHlqww54L/Fp2Vgd2XlwmvmVRtez4qXtTh0HEJ4WWiKxpM+JOU S94eqz/JcS6I5wPjmxvipcYVlr8EpfS9OctMTsdouX77GneH8WmWEc+NGwd/3ih/3NHPwHxS 4ZFX5ZznpzWfykY5iRiVegc0fzqSJl0X+3e76TmPq8pXF8z3+5C7dH35diWW4oxEQy3mouJE ALtJKpe7AgAA DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This function looks up a PM domain form the provider. This will be useful to add parent/child domain relationship from the SoC specific code. The caller of the function must make sure that PM domain provider is already registered. Cc: Rafael J. Wysocki Reviewed-by: Ulf Hansson Signed-off-by: Amit Daniel Kachhap --- Changes from v1: * Added Ulf Hansson Reviewed by. * Cc'd to linux-pm This patch may solve the same purpose which is done by earlier posts 1) https://lkml.org/lkml/2014/11/24/319 - In this there were comments for not using the PM domain name. 2) Ulf Hansson posted a patch http://www.spinics.net/lists/linux-samsung-soc/msg39745.html which also solves similar purpose but I feel this is slightly complex and involves changing the genpd structure. drivers/base/power/domain.c | 3 ++- include/linux/pm_domain.h | 8 ++++++++ 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 6a103a3..0d8780c 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -2088,7 +2088,7 @@ EXPORT_SYMBOL_GPL(of_genpd_del_provider); * Returns a valid pointer to struct generic_pm_domain on success or ERR_PTR() * on failure. */ -static struct generic_pm_domain *of_genpd_get_from_provider( +struct generic_pm_domain *of_genpd_get_from_provider( struct of_phandle_args *genpdspec) { struct generic_pm_domain *genpd = ERR_PTR(-ENOENT); @@ -2108,6 +2108,7 @@ static struct generic_pm_domain *of_genpd_get_from_provider( return genpd; } +EXPORT_SYMBOL_GPL(of_genpd_get_from_provider); /** * genpd_dev_pm_detach - Detach a device from its PM domain. diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index 6cd20d5..a9edab2 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -271,6 +271,8 @@ typedef struct generic_pm_domain *(*genpd_xlate_t)(struct of_phandle_args *args, int __of_genpd_add_provider(struct device_node *np, genpd_xlate_t xlate, void *data); void of_genpd_del_provider(struct device_node *np); +struct generic_pm_domain *of_genpd_get_from_provider( + struct of_phandle_args *genpdspec); struct generic_pm_domain *__of_genpd_xlate_simple( struct of_phandle_args *genpdspec, @@ -288,6 +290,12 @@ static inline int __of_genpd_add_provider(struct device_node *np, } static inline void of_genpd_del_provider(struct device_node *np) {} +static inline struct generic_pm_domain *of_genpd_get_from_provider( + struct of_phandle_args *genpdspec) +{ + return NULL; +} + #define __of_genpd_xlate_simple NULL #define __of_genpd_xlate_onecell NULL