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 00917C43387 for ; Thu, 10 Jan 2019 03:59:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BA5CE20879 for ; Thu, 10 Jan 2019 03:59:25 +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="JLfCmuQX"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="LA5UaY0S" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727331AbfAJD7Y (ORCPT ); Wed, 9 Jan 2019 22:59:24 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:47220 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726637AbfAJD7W (ORCPT ); Wed, 9 Jan 2019 22:59:22 -0500 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id C7D8E6090C; Thu, 10 Jan 2019 03:59:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1547092761; bh=K3SebIwLaCXCoPXqUOD2HGdbd6uQ2szuuu2ntRo+k7s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JLfCmuQX5y9qilbyowaE7EKz3Td7lD8CTq6ABf/uphcOjnlElV7mHThF3I3/XLgg/ /m/NmRp60LBCXURce6QNjMvfh2GUjfSWCcmIXQg7MfsYtkmfI0lRyiO2+GyFFaOSQC o9kw3m/P2feSR3wtqPoFshHtE5vqyPm7aU56ORW4= 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 3E0866086A; Thu, 10 Jan 2019 03:59:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1547092760; bh=K3SebIwLaCXCoPXqUOD2HGdbd6uQ2szuuu2ntRo+k7s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LA5UaY0SwzlMVEEeuMRKntxp9i0tPwDByf9GeeiwTifCLtFKcQlCw4kVvBbKdFyzM QE2jh8g8Cvj2hz7slH3C7Ird3xune+otLf7tU4Ax7QhHbLcppyp5WiBNhVPiOustL5 Pdof/HZpU3kQmlsUAfMAWvSnhMJs+gXOfw3k6UGU= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 3E0866086A 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 v10 2/9] OPP: Add support for parsing the 'opp-level' property Date: Thu, 10 Jan 2019 09:28:45 +0530 Message-Id: <20190110035852.5666-3-rnayak@codeaurora.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190110035852.5666-1-rnayak@codeaurora.org> References: <20190110035852.5666-1-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 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 --- drivers/opp/core.c | 18 ++++++++++++++++++ drivers/opp/of.c | 5 ++++- drivers/opp/opp.h | 2 ++ include/linux/pm_opp.h | 7 +++++++ 4 files changed, 31 insertions(+), 1 deletion(-) diff --git a/drivers/opp/core.c b/drivers/opp/core.c index e5507add8f04..738b1783aa65 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..8274d3ba2c5b 100644 --- a/drivers/opp/of.c +++ b/drivers/opp/of.c @@ -568,7 +568,7 @@ static struct dev_pm_opp *_opp_add_static_v2(struct opp_table *opp_table, { struct dev_pm_opp *new_opp; u64 rate = 0; - u32 val; + u32 val, level = 0; int ret; bool rate_not_available = false; @@ -594,6 +594,9 @@ static struct dev_pm_opp *_opp_add_static_v2(struct opp_table *opp_table, new_opp->rate = (unsigned long)rate; } + if (!of_property_read_u32(np, "opp-level", &level)) + new_opp->level = 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..5accdd96867d 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: level value to be comminucated to remote power manager * @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; -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation