From patchwork Mon Jun 22 08:16:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sibi Sankar X-Patchwork-Id: 11617255 X-Patchwork-Delegate: viresh.linux@gmail.com Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0A9D713B1 for ; Mon, 22 Jun 2020 08:17:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E7B33206FA for ; Mon, 22 Jun 2020 08:17:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="fREaaZ++" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726580AbgFVIR1 (ORCPT ); Mon, 22 Jun 2020 04:17:27 -0400 Received: from mail29.static.mailgun.info ([104.130.122.29]:45406 "EHLO mail29.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726483AbgFVIR1 (ORCPT ); Mon, 22 Jun 2020 04:17:27 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1592813846; h=Content-Transfer-Encoding: MIME-Version: References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=VWc645tQv56zUmLmd/9l85xrA/yzGryLvtCI3SsQW8E=; b=fREaaZ++8y+odrE1e8r3+lq1CqHTESmcLjle5VXdU6Nb2dSgQc5OLQjtV7FZEcKA2zDNEmt0 1SUYu8yM4v2Hs94A60gi9jY1nW8b49qTSVkPH8MqfogKZNMlv1hmLsaCXASRMtiyHkw5Dl/G ijbiL29zTXqvbexKi66MhsqfUDA= X-Mailgun-Sending-Ip: 104.130.122.29 X-Mailgun-Sid: WyI5ZDFmMiIsICJsaW51eC1wbUB2Z2VyLmtlcm5lbC5vcmciLCAiYmU5ZTRhIl0= Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n07.prod.us-east-1.postgun.com with SMTP id 5ef0691686de6ccd4409f72d (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Mon, 22 Jun 2020 08:17:26 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 3350BC43449; Mon, 22 Jun 2020 08:17:24 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from blr-ubuntu-253.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: sibis) by smtp.codeaurora.org (Postfix) with ESMTPSA id 82C28C43395; Mon, 22 Jun 2020 08:17:17 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 82C28C43395 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=sibis@codeaurora.org From: Sibi Sankar To: viresh.kumar@linaro.org, sboyd@kernel.org, georgi.djakov@linaro.org, saravanak@google.com, mka@chromium.org Cc: nm@ti.com, bjorn.andersson@linaro.org, agross@kernel.org, rjw@rjwysocki.net, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, dianders@chromium.org, vincent.guittot@linaro.org, amit.kucheria@linaro.org, lukasz.luba@arm.com, sudeep.holla@arm.com, smasetty@codeaurora.org, Sibi Sankar Subject: [PATCH v6 3/5] OPP: Add and export helper to set bandwidth Date: Mon, 22 Jun 2020 13:46:47 +0530 Message-Id: <20200622081649.27280-4-sibis@codeaurora.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20200622081649.27280-1-sibis@codeaurora.org> References: <20200622081649.27280-1-sibis@codeaurora.org> MIME-Version: 1.0 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Add and export 'dev_pm_opp_set_bw' to set the bandwidth levels associated with an OPP. Reviewed-by: Matthias Kaehlcke Signed-off-by: Sibi Sankar --- v7: * Picked up R-b from Matthias v6: * Pass NULL to _set_opp_bw v5: https://lkml.org/lkml/2020/5/27/7 * Rework the patch based on ^^ v4: https://patchwork.kernel.org/patch/11019737/ * Pass device opp to set bw levels [Bjorn] drivers/opp/core.c | 31 +++++++++++++++++++++++++++++++ include/linux/pm_opp.h | 6 ++++++ 2 files changed, 37 insertions(+) diff --git a/drivers/opp/core.c b/drivers/opp/core.c index 864cf4c65fff3..c9336aac74e91 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -831,6 +831,37 @@ static int _set_required_opps(struct device *dev, return ret; } +/** + * dev_pm_opp_set_bw() - sets bandwidth levels corresponding to an opp + * @dev: device for which we do this operation + * @opp: opp based on which the bandwidth levels are to be configured + * + * This configures the bandwidth to the levels specified by the OPP. However + * if the OPP specified is NULL the bandwidth levels are cleared out. + * + * Return: 0 on success or a negative error value. + */ +int dev_pm_opp_set_bw(struct device *dev, struct dev_pm_opp *opp) +{ + struct opp_table *opp_table; + int ret; + + opp_table = _find_opp_table(dev); + if (IS_ERR(opp_table)) { + dev_err(dev, "%s: device opp table doesn't exist\n", __func__); + return PTR_ERR(opp_table); + } + + if (opp) + ret = _set_opp_bw(opp_table, opp, dev, false); + else + ret = _set_opp_bw(opp_table, NULL, dev, true); + + dev_pm_opp_put_opp_table(opp_table); + return ret; +} +EXPORT_SYMBOL_GPL(dev_pm_opp_set_bw); + /** * dev_pm_opp_set_rate() - Configure new OPP based on frequency * @dev: device for which we do this operation diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h index d5c4a329321dd..ae68417c0ae00 100644 --- a/include/linux/pm_opp.h +++ b/include/linux/pm_opp.h @@ -151,6 +151,7 @@ struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, const char **names void dev_pm_opp_detach_genpd(struct opp_table *opp_table); int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, struct opp_table *dst_table, unsigned int pstate); int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq); +int dev_pm_opp_set_bw(struct device *dev, struct dev_pm_opp *opp); int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask); int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask); void dev_pm_opp_remove_table(struct device *dev); @@ -342,6 +343,11 @@ static inline int dev_pm_opp_set_rate(struct device *dev, unsigned long target_f return -ENOTSUPP; } +static inline int dev_pm_opp_set_bw(struct device *dev, struct dev_pm_opp *opp) +{ + return -EOPNOTSUPP; +} + static inline int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask) { return -ENOTSUPP;