From patchwork Thu Jan 10 04:02:02 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rajendra Nayak X-Patchwork-Id: 10755183 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 114BF1515 for ; Thu, 10 Jan 2019 04:03:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0142929356 for ; Thu, 10 Jan 2019 04:03:18 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E93642935C; Thu, 10 Jan 2019 04:03:17 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7F3BA29356 for ; Thu, 10 Jan 2019 04:03:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727321AbfAJEDQ (ORCPT ); Wed, 9 Jan 2019 23:03:16 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:50498 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727264AbfAJEDQ (ORCPT ); Wed, 9 Jan 2019 23:03:16 -0500 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id E948D60909; Thu, 10 Jan 2019 04:03:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1547092994; bh=REeYR9klFkvldEk9TtltTL3XpkfwWq0PPbhSV3EtTq8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=b5kMwvC4VjCOrfSgjQrutwxdoZGfK7zX1s49sSl9lBghcI0dIr/xlLPWQoy5A9enz oEWaGpFUXe6faMemZCsTN23p8BcuUPimu3zVrhl+SGZQ3h8CHQCVcyik4CvwXNrOUn YzMID5CroZdQDC+T6D5JQmJUY9cc7rhVUGpptIrA= 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 91C24608D2; Thu, 10 Jan 2019 04:03:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1547092994; bh=REeYR9klFkvldEk9TtltTL3XpkfwWq0PPbhSV3EtTq8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=b5kMwvC4VjCOrfSgjQrutwxdoZGfK7zX1s49sSl9lBghcI0dIr/xlLPWQoy5A9enz oEWaGpFUXe6faMemZCsTN23p8BcuUPimu3zVrhl+SGZQ3h8CHQCVcyik4CvwXNrOUn YzMID5CroZdQDC+T6D5JQmJUY9cc7rhVUGpptIrA= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 91C24608D2 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 v11 2/9] OPP: Add support for parsing the 'opp-level' property Date: Thu, 10 Jan 2019 09:32:02 +0530 Message-Id: <20190110040209.6028-3-rnayak@codeaurora.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190110040209.6028-1-rnayak@codeaurora.org> References: <20190110040209.6028-1-rnayak@codeaurora.org> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Now that the OPP bindings are updated to include an optional 'opp-level' property, add support to parse it from device tree and store it as part of dev_pm_opp structure. Also add and export an helper 'dev_pm_opp_get_level()' that can be used to get the level value read from device tree when present. Signed-off-by: Rajendra Nayak Acked-by: Viresh Kumar Reviewed-by: Stephen Boyd --- drivers/opp/core.c | 18 ++++++++++++++++++ drivers/opp/of.c | 2 ++ drivers/opp/opp.h | 2 ++ include/linux/pm_opp.h | 7 +++++++ 4 files changed, 29 insertions(+) diff --git a/drivers/opp/core.c b/drivers/opp/core.c index e5507add8f04..90b78a122be9 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -130,6 +130,24 @@ unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp) } EXPORT_SYMBOL_GPL(dev_pm_opp_get_freq); +/** + * dev_pm_opp_get_level() - Gets the level corresponding to an available opp + * @opp: opp for which level value has to be returned for + * + * Return: level read from device tree corresponding to the opp, else + * return 0. + */ +unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp) +{ + if (IS_ERR_OR_NULL(opp) || !opp->available) { + pr_err("%s: Invalid parameters\n", __func__); + return 0; + } + + return opp->level; +} +EXPORT_SYMBOL_GPL(dev_pm_opp_get_level); + /** * dev_pm_opp_is_turbo() - Returns if opp is turbo OPP or not * @opp: opp for which turbo mode is being verified diff --git a/drivers/opp/of.c b/drivers/opp/of.c index 06f0f632ec47..1779f2c93291 100644 --- a/drivers/opp/of.c +++ b/drivers/opp/of.c @@ -594,6 +594,8 @@ static struct dev_pm_opp *_opp_add_static_v2(struct opp_table *opp_table, new_opp->rate = (unsigned long)rate; } + of_property_read_u32(np, "opp-level", &new_opp->level); + /* Check if the OPP supports hardware's hierarchy of versions or not */ if (!_opp_is_supported(dev, opp_table, np)) { dev_dbg(dev, "OPP not supported by hardware: %llu\n", rate); diff --git a/drivers/opp/opp.h b/drivers/opp/opp.h index e24d81497375..4458175aa661 100644 --- a/drivers/opp/opp.h +++ b/drivers/opp/opp.h @@ -60,6 +60,7 @@ extern struct list_head opp_tables; * @suspend: true if suspend OPP * @pstate: Device's power domain's performance state. * @rate: Frequency in hertz + * @level: Performance level * @supplies: Power supplies voltage/current values * @clock_latency_ns: Latency (in nanoseconds) of switching to this OPP's * frequency from any other OPP's frequency. @@ -80,6 +81,7 @@ struct dev_pm_opp { bool suspend; unsigned int pstate; unsigned long rate; + unsigned int level; struct dev_pm_opp_supply *supplies; diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h index 0a2a88e5a383..473d2c7516f0 100644 --- a/include/linux/pm_opp.h +++ b/include/linux/pm_opp.h @@ -86,6 +86,8 @@ unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp); unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp); +unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp); + bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp); int dev_pm_opp_get_opp_count(struct device *dev); @@ -157,6 +159,11 @@ static inline unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp) return 0; } +static inline unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp) +{ + return 0; +} + static inline bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp) { return false;