From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3E7B6C43387 for ; Mon, 7 Jan 2019 10:10:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 107BA20859 for ; Mon, 7 Jan 2019 10:10:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="HglO4sRq"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="ZvU3JAdu" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726994AbfAGKKx (ORCPT ); Mon, 7 Jan 2019 05:10:53 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:56886 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726958AbfAGKKt (ORCPT ); Mon, 7 Jan 2019 05:10:49 -0500 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 6B6D660C67; Mon, 7 Jan 2019 10:10:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1546855847; bh=JY0fYwYCMlDauuhzXbzpe6pMMXRcC2I8nz/hypWrY1c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HglO4sRq4RBqdqzWJCdjH6bJYssKBdwKGjem6DLEHVlMpy/ms2TpHTbwozohHcgiV UYdPCgwoi8aTm1Vk/muZH9O5W3guNIrRGLLZqEsEt5mKz7aqukEMb7QE9kmv8j0mTp 3wpzDXN+foCTZbknRhe0zt8MWBToh1Ge14Tn2dAw= Received: from blr-ubuntu-173.qualcomm.com (blr-bdr-fw-01_globalnat_allzones-outside.qualcomm.com [103.229.18.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: rnayak@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 6D24660C61; Mon, 7 Jan 2019 10:10:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1546855846; bh=JY0fYwYCMlDauuhzXbzpe6pMMXRcC2I8nz/hypWrY1c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZvU3JAduEGozW4FR4TeZetZ79VBbG4O9FfEMq1cgc2jh+KnLuRRldpXMIzAsSnLm5 zxeGH5fXyppVmn9IEoBmULfgV38NY/oru9unHhTf3Z/58kxodYU8h5J9JUg0M7xYwt UiHxblgVipsSpk0JmaefChRvM/Tv9bCWQSy0tpMo= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 6D24660C61 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=rnayak@codeaurora.org From: Rajendra Nayak To: andy.gross@linaro.org, robh@kernel.org, viresh.kumar@linaro.org, sboyd@kernel.org, ulf.hansson@linaro.org, collinsd@codeaurora.org, mka@chromium.org Cc: devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, henryc.chen@mediatek.com, Rajendra Nayak Subject: [PATCH v9 08/10] OPP: Add a dev_pm_opp_of_get_level() helper Date: Mon, 7 Jan 2019 15:39:57 +0530 Message-Id: <20190107100959.14528-9-rnayak@codeaurora.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190107100959.14528-1-rnayak@codeaurora.org> References: <20190107100959.14528-1-rnayak@codeaurora.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Now that we have atleast 2 genpd providers, both using a simple routine to read a performance state (opp-level) value from device tree, in order to implement the .opp_to_performance_state callback, add a dev_pm_opp_of_get_level() helper to do it, so it can be resued across all such genpd providers which just need to read the value from DT. Suggested-by: Stephen Boyd Signed-off-by: Rajendra Nayak --- drivers/opp/of.c | 23 +++++++++++++++++++++++ include/linux/pm_opp.h | 5 +++++ 2 files changed, 28 insertions(+) diff --git a/drivers/opp/of.c b/drivers/opp/of.c index 06f0f632ec47..6fb383fee601 100644 --- a/drivers/opp/of.c +++ b/drivers/opp/of.c @@ -1029,6 +1029,29 @@ int of_get_required_opp_performance_state(struct device_node *np, int index) } EXPORT_SYMBOL_GPL(of_get_required_opp_performance_state); +/** + * dev_pm_opp_of_get_level() - Reads the opp-level value from Device Tree + * @opp: opp for which 'opp-level' should be read and returned + * + * Returns the opp-level value read from Device Tree, if present, else 0 + * + * Return: Zero or positive opp-level value read from Device tree + */ +unsigned int dev_pm_opp_of_get_level(struct dev_pm_opp *opp) +{ + struct device_node *np; + unsigned int perf_state = 0; + + np = dev_pm_opp_get_of_node(opp); + if (of_property_read_u32(np, "opp-level", &perf_state)) + pr_err("%s: missing 'opp-level' property\n", __func__); + + of_node_put(np); + + return perf_state; +} +EXPORT_SYMBOL_GPL(dev_pm_opp_of_get_level); + /** * dev_pm_opp_get_of_node() - Gets the DT node corresponding to an opp * @opp: opp for which DT node has to be returned for diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h index 0a2a88e5a383..bf7d21b23a5e 100644 --- a/include/linux/pm_opp.h +++ b/include/linux/pm_opp.h @@ -322,6 +322,7 @@ int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpuma struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev); struct device_node *dev_pm_opp_get_of_node(struct dev_pm_opp *opp); int of_get_required_opp_performance_state(struct device_node *np, int index); +unsigned int dev_pm_opp_of_get_level(struct dev_pm_opp *opp); #else static inline int dev_pm_opp_of_add_table(struct device *dev) { @@ -364,6 +365,10 @@ static inline int of_get_required_opp_performance_state(struct device_node *np, { return -ENOTSUPP; } +static inline int dev_pm_opp_of_get_level(struct dev_pm_opp *opp) +{ + return 0; +} #endif #endif /* __LINUX_OPP_H__ */ -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation